Double sleeve pressure buffer space divider and dividing method

Abstract

The present application relates to a kind of double sleeve pipe pressure buffer space partitioner and partition method, including outer tube, inner tube, reducing tee, first end ring, second end ring, communication pipe, valve, pressure gauge, outer tube is set on the outside of inner tube, outer tube is physically divided by reducing tee, and first space and third space are formed, reducing tee forms second space, first space and reducing tee connection place is equipped with first end ring, third space and reducing tee connection place is equipped with second end ring, communication pipe is communicated in first space and third space, and multiple valves and multiple pressure gauges are installed on communication pipe.By the mechanism, it solves the existing double sleeve pipe, when inner tube appears leak point, cannot determine leak point position, needs to replace whole pipeline or adopt the way of cutting sausage to segment cutting to find leak point, causes long construction cycle, long time of production suspension and repair, the problem of big loss.

Description

Technical Field

[0001] This invention relates to the field of industrial media conveying technology, specifically to a dual-tube pressure buffer space divider and a dividing method. Background Technology

[0002] In industrial production, highly hazardous gases or liquids are frequently used, and the pipelines used for their transport typically employ double-walled pipes: double-layered hollow pipes. The outer layer protects the medium from direct entry into the external environment and the risk of direct leakage should the inner layer rupture and leak. To reduce moving parts and lower the risk of leakage, the common practice is to maintain uninterrupted connections between the supply and usage ports along the entire pipeline, including the outer pipe. See details... Figure 1 Schematic diagram. Its drawback is that when a leak occurs in the inner pipe, the location of the leak cannot be determined. To find the specific location, it is necessary to replace the entire pipe or cut the pipe into sections using a salami-slicing method to locate the leak, resulting in long construction cycles, extended downtime for maintenance, and significant losses. Furthermore, toxic and harmful substances can spread throughout the double-pipe buffer space, increasing the difficulty of maintenance and reducing maintenance efficiency. Summary of the Invention

[0003] This invention provides a double-pipe pressure buffer space divider and a dividing method, solving the problems of existing double-pipe systems where, when a leak occurs in the inner pipe, the leak location cannot be determined. This necessitates replacing the entire pipe or cutting it into sections using a salami-slicing method to locate the leak, resulting in long construction cycles, extended downtime for maintenance, and significant losses. Furthermore, toxic and harmful substances can disperse throughout the double-pipe buffer space, increasing maintenance difficulty and reducing efficiency.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] The outer tube is fitted over the inner tube. The outer tube is physically divided by a reducing tee to form a first space and a third space. The reducing tee forms a second space. A first closing ring is installed at the connection between the first space and the reducing tee. A second closing ring is installed at the connection between the third space and the reducing tee. A connecting pipe connects the first space and the third space. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0006] The beneficial effects of adopting the above-mentioned further solutions are that, for long-distance hazardous chemical pipelines, installing one or more of these intermediate detection ports allows for rapid location of leak areas in emergency situations involving inner pipe rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Particularly in pipeline systems transporting specialty gases in electronic semiconductor, chip, and photovoltaic manufacturing enterprises, this device can significantly improve plant maintenance efficiency. Furthermore, without affecting the original function of the double-pipe system, it enables the system to manage the buffer space of the double-pipe system in emergency situations.

[0007] Furthermore, the connecting pipe is divided into a first connecting pipe, a second connecting pipe, and a third connecting pipe by multiple valves. One end of the first connecting pipe and the third connecting pipe are fixedly connected to the outer pipe, and the other end of the first connecting pipe and the third connecting pipe are respectively connected to the two ends of the second connecting pipe.

[0008] The beneficial effect of adopting the above-mentioned further solution is that by dividing the connecting pipe into a first connecting pipe, a second connecting pipe, and a third connecting pipe through multiple valves, the pressure state of the first, second, and third spaces can be adjusted by regulating the opening and closing of the valves in the first, second, and third connecting pipes. This allows for the connection and control of any two or three spaces among the first, second, and third spaces.

[0009] Furthermore, the valve has a first valve, a second valve, a third valve, and a fourth valve. The first valve is connected to the reducing tee and the second connecting pipe. The second valve is connected to the first connecting pipe and the second connecting pipe. The fourth valve is connected to the second connecting pipe and the third connecting pipe. The third valve is located on the second connecting pipe.

[0010] The beneficial effect of adopting the above-mentioned further solution is that the pressure states of the first, second, and third spaces can be adjusted by opening and closing the first, second, third, and fourth valves. This allows for the connection and control of any two or three spaces among the first, second, and third spaces.

[0011] Furthermore, the first valve, the second valve, the third valve, and the fourth valve are connected to the connecting pipe via flange joints.

[0012] The advantage of adopting the above-mentioned further solution is that by using flange joints to connect the first valve, the second valve, the third valve, and the fourth valve to the connecting pipe, it is convenient to adjust each valve individually.

[0013] Furthermore, the pressure gauge has a first pressure gauge and a second pressure gauge, with the first pressure gauge installed in the first connecting pipe and the second pressure gauge installed in the third connecting pipe.

[0014] The beneficial effect of adopting the above-mentioned further solution is that the first pressure gauge and the second pressure gauge can reflect the pressure status of the first space and the third space in real time, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0015] Furthermore, the two ends of the first and second closing rings are fixedly connected to the outer tube and the inner tube, respectively.

[0016] The beneficial effect of adopting the above-mentioned further scheme is that the outer pipe is physically divided by the first and second closing rings, so that the outer pipe forms a first space, a third space, and a second space formed by the reducing tee pipe. Then, multiple valves and multiple pressure gauges are used to connect and adjust the first space, the second space, and the third space, so as to realize the connection and control of any two or three spaces among the first space, the second space, and the third space.

[0017] Furthermore, the inner diameter of the reducing tee is the same as the outer diameter of the outer pipe, and the reducing tee is fixedly connected to the outer pipe.

[0018] The beneficial effect of adopting the above-mentioned further solution is that the inner diameter of the reducing tee is consistent with the outer diameter of the outer pipe, which makes it convenient for the reducing tee to be fitted into the inner pipe and to be consistent with the outer pipe.

[0019] Furthermore, the two ends of the reducing tee are fixedly connected to the first and second closing rings, respectively.

[0020] The beneficial effect of adopting the above-mentioned further solution is that, by welding the first and second tail rings at both ends of the reducing tee pipe to the outer pipe respectively, the outer pipe can be segmented, preventing harmful gases from leaking into the entire outer pipe. Segmenting the outer pipe allows for control over the leakage of harmful gases to a specific section, facilitating maintenance, repair, and replacement by maintenance personnel.

[0021] Furthermore, the outer tube, the reducing tee, the first closing ring, the second closing ring, and the connecting tube are all made of the same material.

[0022] The beneficial effect of adopting the above-mentioned further solution is that the outer tube, the reducing tee, the first closing ring, the second closing ring, and the connecting pipe are made of the same material, and the reducing tee, the first closing ring, the second closing ring, and the outer tube are integrated by welding.

[0023] On the other hand, a method for dividing a dual-tube pressure buffer space divider, based on any of the above-mentioned dual-tube pressure buffer space dividers, specifically implements the pressure states of the first space, the second space, and the third space as follows:

[0024] The first method involves closing the first and fourth valves, opening the second valve, and controlling the pressure in the first space through the third valve.

[0025] The second method: close the second and fourth valves, open the first valve, and control the pressure in the second space through the third valve;

[0026] The third method: close the first and second valves, open the fourth valve, and control the pressure in the third space through the third valve;

[0027] The fourth method involves closing the fourth valve, opening the first and second valves, and using the third valve to simultaneously control the pressure in the first and second spaces.

[0028] Fifth method: Close the first valve, open the second and fourth valves, and use the third valve to simultaneously control the pressure in the first and third spaces;

[0029] The sixth method: Close the second valve, open the first and fourth valves, and use the third valve to simultaneously control the pressure in the second and third spaces;

[0030] The seventh method: Open the first valve, the second valve, and the fourth valve, and use the third valve to simultaneously control the pressure in the first space, the second space, and the third space;

[0031] Eighth method: Close the third valve, open the first, second, and fourth valves, and the first, second, and third spaces are connected and under the same pressure and state;

[0032] Ninth method: Close the third valve, open the second and fourth valves, close the first valve, the first space and the third space are connected, with the same pressure and state, while the second space is independent;

[0033] The tenth method: Close the third valve, open the first and second valves, close the fourth valve, and the first and second spaces are connected, under the same pressure and in the same state, while the third space is independent;

[0034] Eleventh method: Close the third valve, open the first and fourth valves, close the second valve, and the second and third spaces are connected, under the same pressure and in the same state, while the first space is independent.

[0035] The beneficial effects of adopting the above scheme are that the pressure states of the first, second, and third spaces can be regulated by opening and closing the first, second, third, and fourth valves. The pressure states of the first and third spaces are displayed in real time by the first and second pressure gauges, and the status of the corresponding spaces can be detected and judged by observing the pressure data. It can achieve connection and control of any two or three spaces among the first, second, and third spaces. In emergency situations such as internal pipe rupture, the leak location can be quickly located, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Attached Figure Description

[0036] Figure 1 A schematic diagram of an existing dual-tube pressure buffer space system;

[0037] Figure 2 This is a schematic diagram illustrating the dividing principle of a dual-tube pressure buffer space divider and dividing method according to the present invention.

[0038] Figure 3 This is a system effect diagram of a dual-tube pressure buffer space divider and dividing method according to the present invention.

[0039] The components represented by each number in the attached diagram are listed below: 10-Outer pipe; 11-First space; 13-Third space; 20-Inner pipe; 30-Reducing tee pipe; 31-Second space; 40-First closing ring; 50-Second closing ring; 61-First connecting pipe; 62-Second connecting pipe; 63-Third connecting pipe; 71-First valve; 72-Second valve; 73-Third valve; 74-Fourth valve; 81-First pressure gauge; 82-Second pressure gauge. Detailed Implementation

[0040] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0041] Example 1

[0042] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0043] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0044] like Figure 1-3 As shown, the connecting pipe is divided into a first connecting pipe 61, a second connecting pipe 62, and a third connecting pipe 63 by multiple valves. One end of the first connecting pipe 61 and the third connecting pipe 63 are respectively fixedly connected to the outer pipe 10, and the other end of the first connecting pipe 61 and the third connecting pipe 63 are respectively connected to the two ends of the second connecting pipe 62.

[0045] Specifically, a valve is installed between the first connecting pipe 61 and the second connecting pipe 62, a valve is installed between the second connecting pipe 62 and the third connecting pipe 63, a valve is installed on the second connecting pipe 62, and the second connecting pipe 62 is connected to the second space 31 through the valve. By switching the opening and closing of multiple valves, the connection and control of any two or three spaces among the first space 11, the second space 31, and the third space 13 can be achieved.

[0046] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0047] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62, the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62, and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. The first method involves closing the first valve 71 and the fourth valve 74, opening the second valve 72, and controlling the pressure of the first space 11 through the third valve 73. The pressure states of the first space 11, the second space 31, and the third space 13 are adjusted by opening and closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74.

[0048] like Figure 1-3 As shown, the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74 are connected to the connecting pipe via flange joints.

[0049] Specifically, flange joints are used to connect the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74 to the connecting pipe, so that each valve can be adjusted individually.

[0050] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0051] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0052] like Figure 1-3 As shown, the two ends of the first closing ring 40 and the second closing ring 50 are fixedly connected to the outer tube 10 and the inner tube 20, respectively.

[0053] Specifically, the outer tube 10 is physically divided by the first closing ring 40 and the second closing ring 50, forming a first space 11 and a third space 13, as well as a second space 31 formed by the variable diameter tee tube 30.

[0054] like Figure 1-3 As shown, the inner diameter of the reducing tee 30 is the same as the outer diameter of the outer pipe 10, and the reducing tee 30 is fixedly connected to the outer pipe 10.

[0055] Specifically, a reducing tee pipe 30 is fitted over the inner pipe 20, with the outer diameter of the reducing tee pipe 30 matching the outer diameter of the outer pipe 10. The reducing tee pipe 30 is then fixedly connected to the inner pipe 20 and the outer pipe 10. In this embodiment, the reducing tee pipe 30 is fixed to the inner pipe 20 and the outer pipe 10 by welding. Alternatively, the fixing method is not limited to welding; other alternative methods can also be used to fix the reducing tee pipe 30 to the inner pipe 20 and the outer pipe 10 together.

[0056] like Figure 1-3 As shown, the two ends of the reducing tee 30 are fixedly connected to the first closing ring 40 and the second closing ring 50, respectively.

[0057] Specifically, the two ends of the reducing tee 30 are welded and fixed to the outer pipe 10 with a first closing ring 40 and a second closing ring 50, respectively. This allows the outer pipe 10 to be segmented, preventing harmful gases from leaking into the entire outer pipe 10. Segmenting the outer pipe 10 controls the leakage of harmful gases to a specific section, facilitating maintenance, repair, and replacement by maintenance personnel. In this embodiment, the reducing tee 30 is welded to the first closing ring 40 and the second closing ring 50 and fixed to the outer pipe 10. Alternatively, the fixing method is not limited to welding; other alternative methods can also be used to fix the reducing tee 30 to the first closing ring 40 and the second closing ring 50 and fixed to the outer pipe 10.

[0058] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0059] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0060] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0061] Close the first valve 71 and the fourth valve 74, open the second valve 72, and control the pressure of the first space 11 through the third valve 73. Fill with gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure. When the pressure reaches the required level, close the second valve 72 to achieve pressure control of the first space 11.

[0062] Example 2

[0063] like Figure 1-3As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0064] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0065] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0066] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is located on the second connecting pipe 62. Alternatively, the second valve 72 and the fourth valve 74 are closed, the first valve 71 is opened, and the pressure in the second space 31 is controlled via the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure by directly connecting to the atmosphere. When the required pressure is reached, the first valve 71 is closed, thus controlling the pressure in the second space 31.

[0067] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0068] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0069] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0070] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0071] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0072] The second method involves closing the second valve 72 and the fourth valve 74, opening the first valve 71, and controlling the pressure of the second space 31 through the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by drawing a vacuum, and normal pressure is achieved by directly connecting to the atmosphere. When the required pressure is reached, the first valve 71 is closed to control the pressure of the second space 31.

[0073] Example 3

[0074] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0075] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0076] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0077] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62, the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62, and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. Closing the first valve 71 and the second valve 72 and opening the fourth valve 74, along with the third valve 73, allows for pressure control of the third space 13. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure by directly connecting to the atmosphere. Once the required pressure is reached, the fourth valve 74 is closed, thus controlling the pressure of the third space 13.

[0078] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0079] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0080] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0081] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0082] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0083] Close the first valve 71 and the second valve 72, open the fourth valve 74, and control the pressure of the third space 13 through the third valve 73. Fill with gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure. When the pressure reaches the required level, close the fourth valve 74 to achieve pressure control of the third space 13.

[0084] Example 4

[0085] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0086] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0087] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0088] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62, the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62, and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. Closing the fourth valve 74 and opening the first valve 71 and the second valve 72 allows for simultaneous control of the pressure in the first space 11 and the second space 31 through the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure by directly connecting to the atmosphere. When the required pressure is reached, the first valve 71 and the second valve 72 are closed, achieving simultaneous and uniform control of the pressure in the first space 11 and the second space 31.

[0089] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0090] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0091] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0092] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0093] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0094] Close the fourth valve 74, open the first valve 71 and the second valve 72, and simultaneously control the pressure of the first space 11 and the second space 31 through the third valve 73. Injecting gas achieves positive pressure, evacuating vacuum achieves negative pressure, and directly connecting to the atmosphere achieves normal pressure. When the pressure reaches the required level, close the first valve 71 and the second valve 72 to achieve simultaneous and uniform control of the pressure of the first space 11 and the second space 31.

[0095] Example 5

[0096] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0097] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0098] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0099] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62, the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62, and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. Closing the first valve 71 and opening the second valve 72 and the fourth valve 74 allows for simultaneous control of the pressure in the first space 11 and the third space 13 via the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure by directly connecting to the atmosphere. When the required pressure is reached, the second valve 72 and the fourth valve 74 are closed, achieving simultaneous and uniform pressure control in both the first space 11 and the third space 13.

[0100] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0101] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0102] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0103] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0104] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0105] Close the first valve 71, open the second valve 72 and the fourth valve 74, and simultaneously control the pressure of the first space 11 and the third space 13 through the third valve 73. Fill with gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure. When the pressure reaches the required level, close the second valve 72 and the fourth valve 74 to achieve simultaneous and uniform control of the pressure of the first space 11 and the third space 13.

[0106] Example 6

[0107] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0108] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0109] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0110] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62, the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62, and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. Closing the second valve 72 and opening the first valve 71 and the fourth valve 74 allows for simultaneous control of the pressure in the second space 31 and the third space 13 via the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure by directly connecting to the atmosphere. When the required pressure is reached, the first valve 71 and the fourth valve 74 are closed, achieving simultaneous and uniform pressure control in both the second space 31 and the third space 13.

[0111] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0112] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0113] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0114] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0115] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0116] Close the second valve 72, open the first valve 71 and the fourth valve 74, and simultaneously control the pressure of the second space 31 and the third space 13 through the third valve 73. Injecting gas achieves positive pressure, evacuating vacuum achieves negative pressure, and directly connecting to the atmosphere achieves normal pressure. When the pressure reaches the required level, close the first valve 71 and the fourth valve 74 to achieve simultaneous and uniform pressure control of the second space 31 and the third space 13.

[0117] Example 7

[0118] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0119] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0120] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0121] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62, the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62, and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. Opening the first valve 71, the second valve 72, and the fourth valve 74, and using the third valve 73, allows for simultaneous control of the pressure in the first space 11, the second space 31, and the third space 13. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure by directly connecting to the atmosphere. When the required pressure is reached, the first valve 71, the second valve 72, and the fourth valve 74 are closed, achieving simultaneous and uniform pressure control in the first space 11, the second space 31, and the third space 13.

[0122] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0123] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0124] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0125] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0126] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0127] Open the first valve 71, the second valve 72, and the fourth valve 74, and simultaneously control the pressure of the first space 11, the second space 31, and the third space 13 through the third valve 73. Inject gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure. When the pressure reaches the required level, close the first valve 71, the second valve 72, and the fourth valve 74 to achieve simultaneous and uniform pressure control of the first space 11, the second space 31, and the third space 13.

[0128] Example 8

[0129] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0130] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0131] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0132] Specifically, the first valve 71 is connected to the reducing tee 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. When the third valve 73 is closed and the first valve 71, the second valve 72, and the fourth valve 74 are opened, the three spaces—the first space 11, the second space 31, and the third space 13—are connected and under the same pressure and state.

[0133] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0134] Specifically, the first pressure gauge 81 can display the pressure status of the first space 11 in real time, and the status of the corresponding space can be detected and judged by observing the pressure data. The second pressure gauge 82 can display the pressure status of the third space 13 in real time, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0135] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, leak locations can be quickly identified in emergency situations involving inner pipe rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Furthermore, without affecting the original functions of the double-pipe system, the system possesses the ability to manage the buffer space of the double-pipe system in emergency situations.

[0136] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0137] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0138] When the third valve 73 is closed, the first valve 71, the second valve 72, and the fourth valve 74 are opened, connecting the three spaces: the first space 11, the second space 31, and the third space 13, which are under the same pressure and in the same state.

[0139] Example 9

[0140] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0141] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0142] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0143] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. When the third valve 73 is closed, the second valve 72 and the fourth valve 74 are opened, and the first valve 71 is closed, the first space 11 and the third space 13 are connected and under the same pressure and state, while the second space 31 remains independent.

[0144] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0145] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0146] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0147] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0148] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0149] Close the third valve 73, open the second valve 72 and the fourth valve 74, close the first valve 71, and the first space 11 and the third space 13 are connected and under the same pressure and state, while the second space 31 is independent.

[0150] Example 10

[0151] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0152] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0153] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0154] Specifically, the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. When the third valve 73 is closed, the second valve 72 and the fourth valve 74 are opened, and the first valve 71 is closed, the first space 11 and the third space 13 are connected and under the same pressure and state, while the second space 31 remains independent.

[0155] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0156] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0157] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0158] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0159] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0160] Close the third valve 73, open the second valve 72 and the fourth valve 74, close the first valve 71, and the first space 11 and the third space 13 are connected and under the same pressure and state, while the second space 31 is independent.

[0161] Example 11

[0162] like Figure 1-3 As shown, the outer tube 10 is sleeved outside the inner tube 20. The outer tube 10 is physically divided by the reducing tee tube 30 to form a first space 11 and a third space 13. The reducing tee tube 30 forms a second space 31. A first closing ring 40 is installed at the connection between the first space 11 and the reducing tee tube 30. A second closing ring 50 is installed at the connection between the third space 13 and the reducing tee tube 30. A connecting pipe connects the first space 11 and the third space 13. Multiple valves and multiple pressure gauges are installed on the connecting pipe.

[0163] Specifically, the outer pipe 10 is physically divided into multiple segments by the first closing ring 40 and the second closing ring 50. A reducing tee pipe 30 is installed between every two segments of the outer pipe 10, and the entire outer pipe 10 and the reducing tee pipe 30 are welded together to form multiple enclosed spaces. These spaces are then connected by connecting pipes. Each space's connecting pipe is equipped with a valve and several pressure gauges. By adjusting the opening or closing of the valves and using the pressure gauges, the pressure in multiple spaces can be regulated, enabling monitoring of multiple segments. This allows for rapid location of the leak in case of an emergency where the inner pipe 20 is damaged, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0164] like Figure 1-3 As shown, the valve has a first valve 71, a second valve 72, a third valve 73, and a fourth valve 74. The first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62. The second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62. The fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is disposed on the second connecting pipe 62.

[0165] Specifically, the first valve 71 is connected to the reducing tee 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; and the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63. The third valve 73 is located on the second connecting pipe 62. When the third valve 73 is closed, the first valve 71 and the fourth valve 74 are opened, and the second valve 72 is closed. The second space 31 and the third space 13 are connected and under the same pressure and state, while the first space 11 remains independent.

[0166] like Figure 1-3 As shown, the pressure gauge has a first pressure gauge 81 and a second pressure gauge 82. The first pressure gauge 81 is installed in the first connecting pipe 61, and the second pressure gauge 82 is installed in the third connecting pipe 63.

[0167] Specifically, the pressure status of the first space 11 can be displayed in real time through the first pressure gauge 81, and the status of the corresponding space can be detected and judged by observing the pressure data. The pressure status of the third space 13 can be displayed in real time through the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data.

[0168] The beneficial effects of this embodiment are as follows: By installing one or more intermediate detection ports on long-distance hazardous chemical pipelines, the leak location can be quickly identified in emergency situations such as inner pipe 20 rupture, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean up contaminated areas in stages, thus reducing the difficulty of environmental pollution treatment, minimizing production downtime losses, and enhancing system safety. Without affecting the original functions of the double-pipe system, the system also has the ability to manage the buffer space of the double-pipe system in emergency situations.

[0169] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0170] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0171] Close the third valve 73, open the first valve 71 and the fourth valve 74, close the second valve 72, and the second space 31 and the third space 13 are connected, under the same pressure and in the same state, while the first space 11 is independent.

[0172] Example 12

[0173] This embodiment includes all the contents of Embodiment 1.

[0174] A method for dividing a dual-tube pressure buffer space divider, based on any of the above-mentioned dual-tube pressure buffer space dividers, the specific implementation of the pressure states of the first space 11, the second space 31, and the third space 13 is as follows:

[0175] The first method: close the first valve 71 and the fourth valve 74, open the second valve 72, and control the pressure of the first space 11 through the third valve 73;

[0176] The second method: close the second valve 72 and the fourth valve 74, open the first valve 71, and control the pressure of the second space 31 through the third valve 73;

[0177] The third method: close the first valve 71 and the second valve 72, open the fourth valve 74, and control the pressure of the third space 13 through the third valve 73;

[0178] The fourth method: close the fourth valve 74, open the first valve 71 and the second valve 72, and use the third valve 73 to simultaneously control the pressure of the first space 11 and the second space 31.

[0179] Fifth method: Close the first valve 71, open the second valve 72 and the fourth valve 74, and use the third valve 73 to simultaneously control the pressure in the first space 11 and the third space 13;

[0180] The sixth method: close the second valve 72, open the first valve 71 and the fourth valve 74, and simultaneously control the pressure of the second space 31 and the third space 13 through the third valve 73;

[0181] The seventh method: Open the first valve 71, the second valve 72, and the fourth valve 74, and use the third valve 73 to simultaneously control the pressure in the first space 11, the second space 31, and the third space 13;

[0182] Eighth method: Close the third valve 73, open the first valve 71, the second valve 72 and the fourth valve 74, and connect the three spaces 11, 31 and 13, so that they are under the same pressure and in the same state;

[0183] Ninth method: Close the third valve 73, open the second valve 72 and the fourth valve 74, close the first valve 71, the first space 11 and the third space 13 are connected and in the same pressure and state, and the second space 31 is independent;

[0184] The tenth method: close the third valve 73, open the first valve 71 and the second valve 72, close the fourth valve 74, the first space 11 and the second space 31 are connected and have the same pressure and state, and the third space 13 is independent;

[0185] Eleventh method: Close the third valve 73, open the first valve 71 and the fourth valve 74, close the second valve 72, the second space 31 and the third space 13 are connected, with the same pressure and state, and the first space 11 is independent.

[0186] The beneficial effects of the above scheme are that the pressure states of the first space 11, the second space 31, and the third space 13 can be regulated by opening and closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74. The pressure states of the first space 11 and the third space 13 are displayed in real time by the first pressure gauge 81 and the second pressure gauge 82, and the status of the corresponding space can be detected and judged by observing the pressure data. It can achieve connection and control of any two or three spaces among the first space 11, the second space 31, and the third space 13. This allows for rapid location of the leak area in emergency situations such as damage to the inner pipe 20, reducing investigation time and difficulty, improving maintenance efficiency, and enabling the system to isolate and clean contaminated areas, thus reducing the difficulty of environmental pollution treatment, minimizing downtime losses, and enhancing system safety.

[0187] The working process of this embodiment is as follows: the first valve 71 is connected to the reducing tee pipe 30 and the second connecting pipe 62; the second valve 72 is connected to the first connecting pipe 61 and the second connecting pipe 62; the fourth valve 74 is connected to the second connecting pipe 62 and the third connecting pipe 63; and the third valve 73 is installed on the second connecting pipe 62. The first pressure gauge 81 is connected to the first connecting pipe 61, and the second pressure gauge 82 is connected to the third connecting pipe 63.

[0188] By opening or closing the first valve 71, the second valve 72, the third valve 73, and the fourth valve 74, and simultaneously adjusting the pressure state of the first space 11 or the third space 13 using the first pressure gauge 81 or the second pressure gauge 82, the pressure state of the first space 11, the second space 11, and the third space 13 can be determined.

[0189] Method 1: Close the first valve 71 and the fourth valve 74, open the second valve 72, and control the pressure of the first space 11 through the third valve 73. Fill with gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure. When the pressure reaches the required level, close the second valve 72 to achieve pressure control of the first space 11.

[0190] The second method involves closing the second valve 72 and the fourth valve 74, opening the first valve 71, and controlling the pressure of the second space 31 through the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure is achieved by directly connecting to the atmosphere. Once the required pressure is reached, the first valve 71 is closed to control the pressure of the second space 31.

[0191] The third method: Close the first valve 71 and the second valve 72, open the fourth valve 74, and control the pressure of the third space 13 through the third valve 73. Fill with gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure; when the pressure reaches the required level, close the fourth valve 74 to achieve pressure control of the third space 13.

[0192] The fourth method involves closing the fourth valve 74, opening the first valve 71 and the second valve 72, and simultaneously controlling the pressure of the first space 11 and the second space 31 through the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure is achieved by directly connecting to the atmosphere. Once the required pressure is reached, the first valve 71 and the second valve 72 are closed, thus achieving simultaneous and uniform pressure control of the first space 11 and the second space 31.

[0193] The fifth method: Close the first valve 71, open the second valve 72 and the fourth valve 74, and simultaneously control the pressure of the first space 11 and the third space 13 through the third valve 73. Fill with gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure; when the pressure reaches the required level, close the second valve 72 and the fourth valve 74 to achieve simultaneous and uniform pressure control of the first space 11 and the third space 13.

[0194] The sixth method: Close the second valve 72, open the first valve 71 and the fourth valve 74, and simultaneously control the pressure of the second space 31 and the third space 13 through the third valve 73. Fill with gas to achieve positive pressure, evacuate to achieve negative pressure, and directly connect to the atmosphere to achieve normal pressure; when the pressure reaches the required level, close the first valve 71 and the fourth valve 74 to achieve simultaneous and uniform pressure control of the second space 31 and the third space 13.

[0195] The seventh method involves opening the first valve 71, the second valve 72, and the fourth valve 74, and simultaneously controlling the pressure of the first space 11, the second space 31, and the third space 13 through the third valve 73. Positive pressure is achieved by filling with gas, negative pressure by evacuating, and normal pressure is achieved by directly connecting to the atmosphere. Once the required pressure is reached, the first valve 71, the second valve 72, and the fourth valve 74 are closed, achieving simultaneous and uniform pressure control of the first space 11, the second space 31, and the third space 13.

[0196] Eighth method: Close the third valve 73, open the first valve 71, the second valve 72 and the fourth valve 74, and connect the three spaces 11, 31 and 13, so that they are under the same pressure and in the same state;

[0197] Ninth method: Close the third valve 73, open the second valve 72 and the fourth valve 74, close the first valve 71, the first space 11 and the third space 13 are connected and in the same pressure and state, and the second space 31 is independent;

[0198] The tenth method: close the third valve 73, open the first valve 71 and the second valve 72, close the fourth valve 74, the first space 11 and the second space 31 are connected and have the same pressure and state, and the third space 13 is independent;

[0199] Eleventh method: Close the third valve 73, open the first valve 71 and the fourth valve 74, close the second valve 72, the second space 31 and the third space 13 are connected, with the same pressure and state, and the first space 11 is independent.

[0200] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0201] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0202] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0203] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0204] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0205] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A method for dividing a double-tube pressure buffer space divider, characterized in that, Based on a double-tube pressure buffer space divider, the double-tube pressure buffer space divider includes an outer tube (10), an inner tube (20), a reducing tee (30), a first closing ring (40), a second closing ring (50), a connecting pipe, valves, and pressure gauges. The outer tube (10) is sleeved outside the inner tube (20). The outer tube (10) is physically divided by the reducing tee (30) to form a first space (11) and a third space (13). The reducing tee (30) forms a second space (31). The connecting pipe connects the first space (11) and the third space (13). Multiple valves and multiple pressure gauges are installed on the connecting pipe. The connecting pipe is divided into a first connecting pipe (61), a second connecting pipe (62), and a third connecting pipe (63) by multiple valves. The first connecting pipe (61) One end of the third connecting pipe (63) is fixedly connected to the outer pipe (10), and the other ends of the first connecting pipe (61) and the third connecting pipe (63) are respectively connected to the two ends of the second connecting pipe (62). The valve has a first valve (71), a second valve (72), a third valve (73), and a fourth valve (74). The first valve (71) is connected to the reducing tee pipe (30) and the second connecting pipe (62). The second valve (72) is connected to the first connecting pipe (61) and the second connecting pipe (62). The fourth valve (74) is connected to the second connecting pipe (62) and the third connecting pipe (63). The third valve (73) is set on the second connecting pipe (62). The pressure states of the first space (11), the second space (31), and the third space (13) are specifically implemented as follows: The first method: close the first valve (71) and the fourth valve (74), open the second valve (72), and control the pressure of the first space (11) through the third valve (73); The second method: close the second valve (72) and the fourth valve (74), open the first valve (71), and control the pressure of the second space (31) through the third valve (73); The third method: close the first valve (71) and the second valve (72), open the fourth valve (74), and control the pressure of the third space (13) through the third valve (73); The fourth method: close the fourth valve (74), open the first valve (71) and the second valve (72), and use the third valve (73) to simultaneously control the pressure of the first space (11) and the second space (31); The fifth method: close the first valve (71), open the second valve (72) and the fourth valve (74), and use the third valve (73) to simultaneously control the pressure of the first space (11) and the third space (13); The sixth method: close the second valve (72), open the first valve (71) and the fourth valve (74), and use the third valve (73) to simultaneously control the pressure of the second space (31) and the third space (13); The seventh method: Open the first valve (71), the second valve (72), and the fourth valve (74), and use the third valve (73) to simultaneously control the pressure of the first space (11), the second space (31), and the third space (13); Eighth method: Close the third valve (73), open the first valve (71), the second valve (72) and the fourth valve (74), and the three spaces (11, 31 and 13) are connected and have the same pressure and state; Ninth type: Close the third valve (73), open the second valve (72) and the fourth valve (74), close the first valve (71), the first space (11) and the third space (13) are connected and in the same pressure and state, and the second space (31) is independent; The tenth method: close the third valve (73), open the first valve (71) and the second valve (72), close the fourth valve (74), the first space (11) and the second space (31) are connected and in the same pressure and state, and the third space (13) is independent; Eleventh method: Close the third valve (73), open the first valve (71) and the fourth valve (74), close the second valve (72), the second space (31) and the third space (13) are connected, under the same pressure and in the same state, and the first space (11) is independent.

2. The method for dividing a double-tube pressure buffer space divider according to claim 1, characterized in that, The first valve (71), the second valve (72), the third valve (73), and the fourth valve (74) are connected to the connecting pipe via flange joints.

3. The method for dividing a double-tube pressure buffer space divider according to claim 1, characterized in that, The pressure gauge has a first pressure gauge (81) and a second pressure gauge (82), the first pressure gauge (81) is disposed in the first connecting pipe (61), and the second pressure gauge (82) is disposed in the third connecting pipe (63).

4. The method for dividing a double-tube pressure buffer space divider according to claim 1, characterized in that, The first end ring (40) is installed at the connection between the first space (11) and the variable diameter tee pipe (30), and the second end ring (50) is installed at the connection between the third space (13) and the variable diameter tee pipe (30). The two ends of the first end ring (40) and the second end ring (50) are respectively fixedly connected to the outer pipe (10) and the inner pipe (20).

5. The method for dividing a double-tube pressure buffer space divider according to claim 4, characterized in that, The two ends of the reducing tee (30) are fixedly connected to the first tail ring (40) and the second tail ring (50), respectively.

6. The method for dividing a double-tube pressure buffer space divider according to claim 4, characterized in that, The outer tube (10), the reducing tee (30), the first closing ring (40), the second closing ring (50), and the connecting tube are made of the same material.

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