Natural gas pressure regulating pry

Abstract

The utility model relates to the technical field of natural gas pressure regulating pry, in particular to a natural gas pressure regulating pry which comprises a pressure regulating pry box body, a gas inlet pipe and an exhaust pipe, the exhaust pipe is fixedly communicated with one side of the outer wall of the pressure regulating pry box body, and the gas inlet pipe is fixedly communicated with the other side of the outer wall of the pressure regulating pry box body. A natural gas control pressure regulating structure in the pressure regulating pry is arranged on the inner side of the pressure regulating pry box body, a pressure regulating pipe detachable structure is arranged in the pressure regulating pry box body, and a pressure regulating cavity is fixedly formed in the outer wall of the pressure regulating pry box body. According to the natural gas pressure regulating pry, the splicing plate can drive the pressure regulating pipe on the inner side to be clamped into the connecting base on the inner side of the flow dividing pipe, and then the splicing plate and the connecting base can be connected and fixed by rotating the locking screw, so that the pressure regulating pipes are separately arranged and can be independently disassembled and maintained; and during maintenance, the natural gas conveying work can be continuously completed by opening other pressure regulating pipes, so that the using effect of the natural gas pressure regulating pry is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of natural gas pressure regulating skids, in particular to a natural gas pressure regulating skid. Background Technique

[0002] To meet the growing energy demand for natural gas in various regions, in natural gas liquefaction plants, natural gas pressure regulating skids play a crucial role. As an important core device for the upstream pipeline to supply stable pressure gas to the downstream pipeline, it is directly related to the stable operation of the entire liquefied natural gas plant.

[0003] For example, the patent with the publication number "CN219530574U" named a natural gas pressure regulating skid uses a second safety valve to automatically relieve pressure when the pressure of the output pipeline exceeds the preset value. The primary pressure regulating valve and the secondary pressure regulating valve are arranged at intervals in the pressure regulating pipeline, having the advantages of continuous and stable pressure regulation, less impact on the downstream pipeline, and ensuring safe operation. However, in existing natural gas pressure regulating skids, since two pipelines are used to divide the flow of natural gas transportation, the pressure of natural gas transportation in the pipeline will be appropriately reduced after such flow division. But the number of the two pressure regulating pipelines is still relatively small. When the standby pipeline and the pressure regulating pipeline are damaged or reach the service life, timely replacement and repair are required to ensure safe use. At the same time, there may also be problems of leakage or blockage inside the natural gas pipeline. The existing natural gas pressure regulating skid has the pressure regulating pipeline and the pipeline for transporting natural gas connected as a whole, which is not convenient for disassembly and replacement. Moreover, when replacing the pipeline, the transportation of natural gas needs to be shut down, resulting in a relatively poor use effect of the natural gas pressure regulating skid. Content of the Utility Model

[0004] The purpose of the utility model is to solve the problem of poor use effect of the natural gas pressure regulating skid, and a natural gas pressure regulating skid is proposed.

[0005] To achieve the above purpose, the utility model provides the following technical solution:

[0006] Design a natural gas pressure regulating skid, including a pressure regulating skid box body, an air inlet pipe, and an exhaust pipe. The exhaust pipe is fixedly communicated with one side of the outer wall of the pressure regulating skid box body, and the air inlet pipe is fixedly communicated with the other side of the outer wall of the pressure regulating skid box body. A natural gas control and pressure regulation structure is arranged inside the pressure regulating skid box body, a detachable structure for the pressure regulating pipe is arranged inside the pressure regulating skid box body, and a pressure regulating cavity is fixedly opened on the outer wall of the pressure regulating skid box body.

[0007] Preferably, the natural gas control and pressure regulation structure includes a flow dividing pipe and a pressure regulating pipe. The two flow dividing pipes are fixedly connected to both sides inside the pressure regulating skid box body. Multiple pressure regulating pipes are movably installed between the two flow dividing pipes. A pressure regulating valve is fixedly installed inside the multiple pressure regulating pipes. The other ends of the two flow dividing pipes are fixedly connected to a pressure relief pipe, and a pressure relief valve is fixedly installed on the outer sides of the two pressure relief pipes.

[0008] Preferably, one end of the shunt pipe is communicated with the intake pipe, the other end above the shunt pipe is communicated with the exhaust pipe, and the plurality of pressure regulating pipes are arranged parallel to each other at equal distances.

[0009] Preferably, the detachable structure of the pressure regulating pipe includes a connecting seat and a damping rod. A plurality of the damping rods are fixedly installed at both ends of the inner wall of the pressure regulating skid box body. Buffer plates are fixedly connected to the ends of the plurality of damping rods. A plurality of the connecting seats are fixedly connected to both sides of the inner wall of the shunt pipe. A plurality of fitting plates are movably connected to the outer sides of the plurality of connecting seats. A plurality of locking screws are threadedly connected to the outer sides of the plurality of fitting plates. The ends of the plurality of locking screws are threadedly connected to the outer sides of the connecting seats. The other ends of the plurality of fitting plates are fixedly connected to both ends of the pressure regulating pipe.

[0010] Preferably, a natural gas transportation control structure is provided on the outer side of the shunt pipe. The natural gas transportation control structure includes a filter and a pressure transmitter. A plurality of the filters are fixedly installed inside the lower ends of the pressure regulating pipes. A plurality of the pressure transmitters are fixedly installed inside the pressure regulating pipes. A temperature transmitter is fixedly installed inside the middle of the plurality of pressure regulating pipes. A pressure detecting member is fixedly installed inside the tops of the plurality of pressure regulating pipes.

[0011] Preferably, an intake valve is fixedly installed on the outer side of the intake pipe, an exhaust valve is fixedly installed on the outer side of the exhaust pipe, and sealing rings are fixedly sleeved at the joints of the exhaust pipe and the intake pipe with the pressure regulating skid box body.

[0012] For a natural gas pressure regulating skid proposed by the present utility model, the beneficial effects are as follows: The inner pressure regulating pipe can be clamped into the connecting seat inside the shunt pipe by the fitting plate, and then the connection between the fitting plate and the connecting seat can be realized and fixed by rotating the locking screw. In this way, the plurality of pressure regulating pipes are separately arranged and can be disassembled and repaired individually. Moreover, when repairing, the transportation of natural gas can continue by opening other pressure regulating pipes, improving the use effect of the natural gas pressure regulating skid. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a three-dimensional schematic diagram of the present utility model;

[0014] Figure 2 is Figure 1 the front sectional view of

[0015] Figure 3 is Figure 1 the top view of

[0016] Figure 4 is Figure 2 the enlarged sectional view of part A in

[0017] Figure 5For Figure 2 The enlarged sectional view of part B in

[0018] Figure 6 For Figure 2 The enlarged sectional view of part C in

[0019] In the figure: 1. Pressure regulating skid box body, 2. Inlet pipe, 3. Exhaust pipe, 4. Pressure regulating chamber, 5. Natural gas control and pressure regulating structure, 51. Shunt pipe, 52. Pressure regulating pipe, 53. Pressure regulating valve, 54. Relief pipe, 55. Relief valve, 6. Detachable structure of pressure regulating pipe, 61. Connecting seat, 62. Splitting plate, 63. Locking screw, 64. Damping rod, 65. Buffer plate, 7. Natural gas transmission control structure, 71. Filter, 72. Pressure transmitter, 73. Temperature transmitter, 74. Pressure detection component, 81. Exhaust valve, 82. Inlet valve, 83. Sealing ring. Specific embodiments

[0020] The present utility model will be further described below with reference to the accompanying drawings:

[0021] Embodiment 1:

[0022] Please refer to Figures 1-6 : In this embodiment, a natural gas pressure regulating skid includes a pressure regulating skid box body 1, an inlet pipe 2 and an exhaust pipe 3. The exhaust pipe 3 is fixedly communicated with one side of the outer wall of the pressure regulating skid box body 1, and the inlet pipe 2 is fixedly communicated with the other side of the outer wall of the pressure regulating skid box body 1. The end of the inlet pipe 2 is connected to the external natural gas transmission pipeline. The exhaust pipe 3 can transport the natural gas with regulated pressure to the external pipeline. A natural gas control and pressure regulating structure 5 is arranged inside the pressure regulating skid box body 1, and a detachable structure 6 of the pressure regulating pipe is arranged inside the pressure regulating skid box body 1. A pressure regulating chamber 4 is fixedly opened on the outer wall of the pressure regulating skid box body 1. The pressure regulating chamber 4 is directly opened on the outer wall of the natural gas pressure regulating skid box body 1, which is convenient for operators to replace the pressure regulating pipe 52.

[0023] The natural gas control and pressure regulating structure 5 includes a shunt pipe 51 and a pressure regulating pipe 52. Two shunt pipes 51 are fixedly connected to both sides inside the pressure regulating skid box body 1. A plurality of pressure regulating pipes 52 are movably installed between the two shunt pipes 51. A pressure regulating valve 53 is fixedly installed inside the plurality of pressure regulating pipes 52. The pressure regulating valve 53 can be made of an electric ball valve with good sealing performance and strong pressure resistance. The electric ball valve belongs to a relatively mature technical means. The natural gas flow inside the pressure regulating pipe 52 is opened by electrically driving the valve core to rotate. The other ends of the two shunt pipes 51 are fixedly connected to a relief pipe 54.

[0024] The flow divider 51 is connected to the ends of the intake pipe 2 and the exhaust pipe 3. In this way, natural gas can enter the flow divider 51 along the intake pipe 2. During normal use, the corresponding number of pressure regulating valves 53 can be opened according to the natural gas pressure required. When only a single pressure regulating valve 52 is opened, the natural gas can only flow through one pressure regulating pipe 52. With the total amount of natural gas remaining unchanged, the pressure will increase. On the contrary, when multiple pressure regulating valves 53 are opened simultaneously, multiple pressure regulating pipes 52 can separate and transport the natural gas with the same total amount, reducing the pressure of the natural gas passing through the pressure regulating pipes 52. Two pressure relief valves 55 are fixedly installed on the outer sides of the two pressure relief pipes 54. The pressure relief valves 55 are connected to both ends of the flow divider 51 through the end pressure relief pipes 54. When the natural gas pressure inside the flow divider 51 is too high and prone to danger, the pressure relief valves 55 can be temporarily opened to discharge a part of the natural gas to ensure safety. One end of the flow divider 51 is connected to the intake pipe 2, and the other end above the flow divider 51 is connected to the exhaust pipe 3. The multiple pressure regulating pipes 52 are arranged parallel to each other at equal distances.

[0025] The detachable structure 6 of the pressure regulating pipe includes a connection seat 61 and a damping rod 64. A plurality of damping rods 64 are fixedly installed at both ends of the inner wall of the pressure regulating skid box body 1. The damping rods 64 can be hydraulic damping rods. The front ends of the damping rods 64 are attached to the outer wall of the flow divider 51 through buffer plates 65. When natural gas is transported into the flow divider 51, the flow divider 51 will generate a small amount of vibration due to the transmission of natural gas. The hydraulic damping rods are used to reduce the damage caused by the vibration of the flow divider 51. The ends of the plurality of damping rods 64 are fixedly connected with buffer plates 65, and a plurality of connection seats 61 are fixedly connected to both sides of the inner wall of the flow divider 51.

[0026] The outer sides of the plurality of connection seats 61 are movably connected with splicing plates 62. The splicing plates 62 are welded to both ends of the plurality of pressure regulating pipes 52. The outer sides of the plurality of splicing plates 62 are threadedly connected with a plurality of locking screws 63. The splicing plates 62 can drive the inner pressure regulating pipes 52 to be inserted into the connection seats 61 inside the flow divider 51, and then the connection between the splicing plates 62 and the connection seats 61 can be realized by rotating the locking screws 63. The ends of the plurality of locking screws 63 are threadedly connected to the outer sides of the connection seats 61, and the other ends of the plurality of splicing plates 62 are fixedly connected to both ends of the pressure regulating pipes 52;

[0027] It is sufficient to use a hydraulic damping rod for the damping rod 64. The front end of the damping rod 64 is attached to the outer wall of the shunt pipe 51 through a buffer plate 65. When natural gas is transported into the shunt pipe 51, the shunt pipe 51 will generate a small amount of vibration due to the transmission of natural gas. The hydraulic damping rod is used to reduce the damage caused by the vibration of the shunt pipe 51. The splicing plate 62 is welded to both ends of multiple pressure regulating pipes 52. Multiple locking screws 63 are threadedly connected to the outside of multiple splicing plates 62. The splicing plate 62 can bring the inner pressure regulating pipe 52 into the connection seat 61 inside the shunt pipe 51. Then, by rotating the locking screws 63, the connection and fixation between the splicing plate 62 and the connection seat 61 can be realized. In this way, multiple pressure regulating pipes 52 are separated and can be disassembled and repaired individually. Moreover, during maintenance, the transportation of natural gas can continue by opening other pressure regulating pipes 52, improving the use effect of the natural gas pressure regulating skid.

[0028] Working principle:

[0029] When using the natural gas pressure regulating skid, it is possible to utilize the method of reducing the natural gas pressure through shunting to adjust the pressure and flow rate of the transported natural gas. The natural gas pressure regulating skid can work after being connected to the natural gas transportation pipeline.

[0030] Pressure regulating structure of the natural gas pressure regulating skid:

[0031] The pressure regulating valve 53 can be made of an electric ball valve with good sealing performance and strong pressure resistance. The electric ball valve belongs to a relatively mature technical means. The electric drive rotates the valve core to open the flow of natural gas inside the pressure regulating pipe 52. In this way, natural gas can enter the shunt pipe 51 along the inlet pipe 2. During normal use, the corresponding number of pressure regulating valves 53 can be opened according to the required natural gas pressure. When only one pressure regulating valve 52 is opened, the natural gas can only flow through one pressure regulating pipe 52. In this case, with the total amount of natural gas remaining unchanged, its pressure will increase. On the contrary, when multiple pressure regulating valves 53 are opened simultaneously, multiple pressure regulating pipes 52 can also transport the same total amount of natural gas separately, reducing the pressure of the natural gas passing through the pressure regulating pipe 52.

[0032] Detachable structure of the pressure regulating pipe of the natural gas pressure regulating skid:

[0033] The hydraulic damping rod is used to reduce the damage caused by the vibration of the shunt pipe 51. The splicing plate 62 is welded to both ends of multiple pressure regulating pipes 52. Multiple locking screws 63 are threadedly connected to the outside of multiple splicing plates 62. The splicing plate 62 can bring the inner pressure regulating pipe 52 into the connection seat 61 inside the shunt pipe 51. Then, by rotating the locking screws 63, the connection and fixation between the splicing plate 62 and the connection seat 61 can be realized. In this way, multiple pressure regulating pipes 52 are separated and can be disassembled and repaired individually. Moreover, during maintenance, the transportation of natural gas can continue by opening other pressure regulating pipes 52.

[0034] Embodiment 2:

[0035] Please refer to Figures 1-6 : In this embodiment, a natural gas pressure regulating skid further includes a natural gas transmission control structure 7 provided outside the pressure regulating pipe 52. The natural gas transmission control structure 7 includes a filter 71 and a pressure transmitter 72. A plurality of filters 71 are fixedly installed inside the lower end of the pressure regulating pipe 52. The filter 71 adopts the prior art already disclosed in a natural gas pressure regulating skid with the publication number of "CN219530574U" in the comparative document. The filter 71 can achieve the effect of filtering and sieving the flowing natural gas. A plurality of pressure transmitters 72 are fixedly installed inside the pressure regulating pipe 52. A temperature transmitter 73 is fixedly installed inside the middle of a plurality of pressure regulating pipes 52. A pressure detection member 74 is fixedly installed inside the top end of a plurality of pressure regulating pipes 52. The pressure detection member 74, the temperature transmitter 73, and the pressure transmitter 72 are all the same as the prior art already disclosed in the comparative document.

[0036] The temperature detection member, the pressure detection member, the temperature transmitter, and the pressure transmitter are arranged at intervals on the output pipeline. The temperature transmitter is electrically connected to the intermediate junction box, and the pressure transmitter is electrically connected to the intermediate junction box. The temperature detection member and the pressure detection member are on-site indicating pressure gauges and thermometers. The temperature detection member and the pressure detection member can detect the pressure and temperature of the natural gas in the output pipeline in real time. The temperature transmitter and the pressure transmitter can be electrically connected to the intermediate junction box through wires respectively, and then feedback to the system console through the intermediate junction box. An intake valve 82 is fixedly installed outside the intake pipe 2, and an exhaust valve 81 is fixedly installed outside the exhaust pipe 3. The exhaust valve 81 can be manually turned to open, and then the exhaust pipe 3 can discharge the natural gas for transportation. A sealing ring 83 is fixedly sleeved at the connection between the exhaust pipe 3 and the intake pipe 2 and the pressure regulating skid box body 1. The sealing ring 83 is made of rubber material. The sealing ring 83 is sleeved outside the ends of the exhaust pipe 3 and the intake pipe 2, which can improve the sealing performance of the connection position between the exhaust pipe 3 and the intake pipe 2 and the pressure regulating skid box body 1.

[0037] Working principle:

[0038] The filter 71 adopts the prior art disclosed in the comparative document with the publication number of "CN219530574U" and named as a natural gas pressure regulating skid. The filter 71 can achieve the effect of filtering and sieving the flowing natural gas. The pressure detection component 74, the temperature transmitter 73 and the pressure transmitter 72 are all the same as the prior art disclosed in the comparative document. The temperature detection component, the pressure detection component, the temperature transmitter and the pressure transmitter are arranged at intervals on the output pipeline. The temperature transmitter is electrically connected to the intermediate junction box, and the pressure transmitter is electrically connected to the intermediate junction box. The temperature detection component and the pressure detection component are on-site indicating pressure gauges and thermometers. The temperature detection component and the pressure detection component can detect the pressure and temperature of the natural gas in the output pipeline in real time. The temperature transmitter and the pressure transmitter can be electrically connected to the intermediate junction box through wires respectively, and then feedback to the system console through the intermediate junction box. The exhaust valve 81 can be manually turned to open, and then the exhaust pipe 3 can discharge the natural gas for transportation.

[0039] Although the present utility model has been illustrated and described by reference to the preferred embodiments, those of ordinary skill in the art should understand that various changes in form and details may be made within the scope of the claims.

Claims

1. A natural gas pressure regulating skid, comprising a pressure regulating skid box body (1), an inlet pipe (2) and an exhaust pipe (3), wherein the exhaust pipe (3) is fixedly communicated with one side of the outer wall of the pressure regulating skid box body (1), and the inlet pipe (2) is fixedly communicated with the other side of the outer wall of the pressure regulating skid box body (1), and is characterized in that: Inside the pressure regulating skid box body (1), there is a natural gas control and pressure regulating structure (5). Inside the pressure regulating skid box body (1), there is a detachable structure (6) for the pressure regulating pipe. On the outer wall of the pressure regulating skid box body (1), a pressure regulating chamber (4) is fixedly opened.

2. The natural gas pressure regulating skid according to claim 1, wherein: The natural gas control and pressure regulating structure (5) includes a shunt pipe (51) and a pressure regulating pipe (52). The two shunt pipes (51) are fixedly connected to both sides inside the pressure regulating skid box body (1). A plurality of pressure regulating pipes (52) are movably installed between the two shunt pipes (51). A pressure regulating valve (53) is fixedly installed inside the plurality of pressure regulating pipes (52). The other ends of the two shunt pipes (51) are fixedly connected to a pressure relief pipe (54). A pressure relief valve (55) is fixedly installed on the outer sides of the two pressure relief pipes (54).

3. The natural gas pressure regulating skid according to claim 2, characterized in that: One end of the shunt pipe (51) is communicated with the inlet pipe (2), and the other end above the shunt pipe (51) is communicated with the exhaust pipe (3). The plurality of pressure regulating pipes (52) are arranged parallel to each other at equal distances.

4. A natural gas pressure regulating skid according to claim 1, characterized in that: The detachable structure (6) for the pressure regulating pipe includes a connecting seat (61) and a damping rod (64). The plurality of damping rods (64) are fixedly installed at both ends of the inner wall of the pressure regulating skid box body (1). Buffer plates (65) are fixedly connected to the ends of the plurality of damping rods (64). The plurality of connecting seats (61) are fixedly connected to both sides of the inner wall of the shunt pipe (51). The outer sides of the plurality of connecting seats (61) are movably connected to splicing plates (62). The outer sides of the plurality of splicing plates (62) are threadedly connected with a plurality of locking screws (63). The ends of the plurality of locking screws (63) are threadedly connected to the outer sides of the connecting seats (61). The other ends of the plurality of splicing plates (62) are fixedly connected to both ends of the pressure regulating pipe (52).

5. A natural gas pressure regulating skid according to claim 2, characterized in that: On the outer side of the pressure regulating pipe (52), there is a natural gas transmission control structure (7). The natural gas transmission control structure (7) includes a filter (71) and a pressure transmitter (72). The plurality of filters (71) are fixedly installed inside the lower ends of the pressure regulating pipes (52). The plurality of pressure transmitters (72) are fixedly installed inside the pressure regulating pipes (52). A temperature transmitter (73) is fixedly installed inside the middle of the plurality of pressure regulating pipes (52). A pressure detection element (74) is fixedly installed inside the tops of the plurality of pressure regulating pipes (52).

6. The natural gas pressure regulating skid according to claim 1, wherein: An intake valve (82) is fixedly installed on the outer side of the inlet pipe (2), an exhaust valve (81) is fixedly installed on the outer side of the exhaust pipe (3), and sealing rings (83) are fixedly sleeved at the joints of the exhaust pipe (3) and the inlet pipe (2) with the pressure regulating skid box body (1).

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