Multi-specification and multi-model pipeline valve pressure test tool

Abstract

The utility model discloses a multi-specification and multi-model pipeline valve pressure test tool, and belongs to the technical field of valve pressure test. Comprising a base frame of a tool body, blind plate flanges, a screw, a screw end cover, a nut sleeve, a hand wheel and the like, the blind plate flanges are arranged at the upper end and the lower end of the base frame respectively, the two blind plate flanges are arranged oppositely, the blind plate flange located at the upper end of the base frame can ascend and descend vertically, and a flow channel and a valve communicating hole are formed in the blind plate flanges. The flow channel penetrates through the blind flange front and back, and the valve communicating hole is formed in the surface of the blind flange and communicates with the flow channel. The valve pressure test tool provided by the utility model is diversified in function, more flexible to use, better in expandability, and higher in valve pressure test safety and efficiency. The valve pressure testing device can quickly and conveniently complete valve pressure testing work in a short time, and is suitable for pressure testing work of pipeline valves of multiple specifications and models.

Description

Technical Field

[0001] The utility model relates to a pipeline valve pressure test tooling, in particular to a pressure test tooling for pipeline valves of multiple specifications and models, belonging to the technical field of valve pressure test. Background Art

[0002] In pipeline engineering, valves with different functions are installed on pipelines. In a fluid pipeline system, a valve is a control element, and its main functions are to isolate equipment and pipeline systems, regulate flow, prevent backflow, regulate and discharge pressure. It can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil products, liquid metals, and radioactive media. Valves have standardized standards in aspects such as design, manufacturing, inspection, and use.

[0003] According to relevant technical standards and specification requirements, valves should be subjected to strength and tightness tests during production or before installation. The strength and tightness of valves are the main indicators to measure the service performance of valves. Internal leakage and external leakage of valves will cause medium leakage, equipment damage, product scrapping, environmental pollution, and in severe cases, safety accidents. Therefore, in the valve manufacturing industry, valve pressure test inspection is a necessary link to detect whether the valve quality meets the standards. Common valve tests are generally strength tests and sealing tests. The strength test requires that the valve body does not crack or deform during the test time, the valve does not seep or leak water, and the pressure gauge does not drop; after the strength test is qualified, the sealing test is carried out. The sealing test requires that there is no leakage in the valve during the test time and the pressure gauge does not drop. Valves that pass both the strength test and the sealing test meet the factory standards.

[0004] Traditional valve pressure test equipment is often not universal for valves of different specifications, models, and pressures, resulting in a large number of equipment required for the valve pressure test process, inconvenient operation, and high costs; in addition, there are also disadvantages such as complex structure, inconvenient use, and affecting the pressure test efficiency. Some existing pressure test equipment has carried out certain optimization improvements, such as a valve pressure test device that is easy to operate disclosed in the Chinese utility model patent with the application number 202220667805.1. However, its scalability is insufficient, and its flexibility and efficiency are poor when performing multiple tasks, and the function mode is still relatively single. Summary of the Invention

[0005] In order to overcome the above deficiencies of the prior art, the utility model provides a pressure test tooling for pipeline valves of multiple specifications and models.

[0006] The technical solution adopted by the present utility model is as follows: A pressure test tooling for pipeline valves with multiple specifications and models is designed, which includes a base frame and blind flange. Blind flanges are respectively arranged at the upper and lower ends of the base frame, and the two blind flanges are arranged facing each other. The blind flange at the upper end of the base frame can move up and down. A flow channel and a valve communication hole are arranged on the blind flange. The flow channel penetrates through the blind flange from front to back, and the valve communication hole is arranged on the surface of the blind flange and communicates with the flow channel.

[0007] Further, one end of the flow channel is used to connect the medium inlet pipe, and the other end is used to connect the medium outlet pipe or instrument. The instrument includes a pressure gauge or a thermometer.

[0008] More specifically, the front end of the flow channel of the blind flange installed at the upper end of the base frame is connected to the medium outlet pipe, and a pressure gauge is installed at the rear end. The front end of the flow channel of the blind flange installed at the lower end of the base frame is connected to the medium inlet pipe, and a pressure gauge is installed at the rear end.

[0009] Further, the base frame includes a lower cross beam, lower longitudinal beams, columns and an upper cross beam. Lower longitudinal beams are respectively arranged at the left and right ends of the lower cross beam. Columns are arranged on the lower longitudinal beams, and the upper cross beam is arranged at the upper ends of the two columns. The blind flange at the lower end of the base frame is fixed on the lower cross beam. The lower cross beam, lower longitudinal beams, columns and upper cross beam are all made of I-beams.

[0010] Further, the design also includes a screw rod. The screw rod is arranged on the upper cross beam, penetrates through the upper cross beam and is threadedly connected with the upper cross beam. The blind flange installed at the upper end of the base frame is connected to the lower end of the screw rod, and a hand wheel is arranged at the upper end of the screw rod.

[0011] Further, the design also includes a nut sleeve. A through hole penetrating through the upper cross beam is arranged on the upper cross beam, and the nut sleeve is arranged in the through hole. The screw rod is threadedly connected with the nut sleeve.

[0012] Further, an end cover is arranged on the blind flange installed at the upper end of the base frame. The lower end of the screw rod is connected to the end cover, and the screw rod can rotate along the connection with the end cover.

[0013] Further, a water line is also arranged on one side surface of the blind flange where the valve communication hole is arranged.

[0014] Further, stepped holes are arranged on the blind flanges at both ends of the flow channel, and internal threads are arranged in the stepped holes.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] A valve connection hole is provided in the middle of the blind flange: specifically designed for the inlet and outlet of the valve, facilitating the introduction of liquid media, such as for cleaning, testing, or liquid filling. This design makes the blind flange not just a simple isolation part, but a multi-functional interface, enhancing its practicality in specific operation processes.

[0017] The design of the flow channel on the blind flange forms peripheral access ports on both sides of the blind flange. It can not only be used to connect the inlet valve to achieve precise control of the liquid, but also provides functions of drainage and exhaust, ensuring the cleanliness and pressure balance of the internal environment of the pipeline valve system and the pressure test system. In addition, the flow channel port can also be used to install instruments to monitor the fluid state in the pipeline, such as parameters like temperature and pressure, facilitating real-time monitoring and maintenance.

[0018] Comprehensive advantages:

[0019] Flexibility and expandability: The combined design of the flow channel and the valve connection hole endows the blind flange with unprecedented flexibility and expandability. It is not only limited to the traditional isolation and sealing functions, but can also serve as a multi-functional interface to support various operations such as liquid introduction, control, and monitoring, greatly enhancing its application value in complex pipeline systems.

[0020] Safety and efficiency: Through fine waterline processing and the design of multi-functional holes, the blind flange not only ensures the tightness of the connection part, but also realizes the efficient management and monitoring of the liquid medium in the pipeline valve system, which is of great significance for enhancing the safety and operation efficiency of the entire system. Brief description of the drawings

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0022] Figure 1 It is a schematic isometric view of the present invention.

[0023] Figure 2 It is a schematic cross-sectional view of the blind flange of the present invention.

[0024] Figure 3 It is a schematic isometric view of the present invention after installing pipeline valves and pressure gauges.

[0025] Figure 4 It is a schematic diagram of the liquid flow (entering from the bottom and flowing out from the top) of the present invention after installing pipeline valves and pressure gauges.

[0026] In the figure: 1, base frame; 2, blind flange; 3, flow channel; 4, valve connection hole; 5, pressure gauge; 6, lower cross beam; 7, lower longitudinal beam; 8, column; 9, upper cross beam; 10, screw; 11, hand wheel; 12, nut sleeve; 13, end cover; 14, water line; 15, stepped hole. Specific embodiments

[0027] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some but not all of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, if the terms "installation", "connection" and "connection" are used, they should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] Embodiment 1

[0030] As Figure 1 shown, a pressure testing tooling for multi-specification and multi-model pipeline valves includes a base frame 1 and a blind flange 2. Blind flanges 2 are respectively arranged at the upper and lower ends of the base frame 1. The two blind flanges 2 are arranged opposite to each other. The blind flange 2 at the upper end of the base frame 1 can move up and down. During pressure testing, the pipeline valve is clamped between the two blind flanges 2 for pressure testing. As Figure 2 shown, a flow channel 3 and a valve connection hole 4 are arranged on the blind flange 2. The flow channel 3 runs through the blind flange 2 from front to back. The valve connection hole 4 is arranged on the surface of the blind flange 2 and communicates with the flow channel 3. During pressure testing, the valve connection hole 4 communicates with the pipeline valve clamped between the two blind flanges 2, as Figure 4 shown.

[0031] The blind flange 2 not only serves as a seal and a clamping piece, but also becomes a multi-functional interface through the settings of the flow channel 3 and the valve communication hole 4, enhancing its practicality in specific operation processes: both ends of the flow channel 3 can not only be used to connect the water inlet pipe (not shown in the attached drawings, the water inlet pipe can be equipped with a water inlet valve or directly connected to the water inlet valve) to achieve precise control of the liquid, but also provide the functions of drainage and exhaust to ensure the cleanliness and pressure balance of the internal environment of the pipeline valve system. In addition, both ends of the flow channel 3 can also be used to install instruments to monitor the fluid state in the pipeline, such as parameters like temperature and pressure, facilitating real-time monitoring and maintenance. Through the settings of the flow channel 3 and the valve communication hole 4, it also provides convenience for subsequent system expansion, ensuring the flexibility and efficiency of the tooling main body when performing multiple tasks.

[0032] Embodiment 2

[0033] This embodiment is a further optimization and refinement of the tooling structure based on Embodiment 1, specifically as follows:

[0034] One end of the flow channel 3 is used to connect the medium inlet pipe (not shown in the attached drawings), and the other end is used to connect the medium outlet pipe (not shown in the attached drawings) or an instrument. The medium inlet pipe and the medium outlet pipe can be used for the flow of water, oil, air, steam, nitrogen, etc. The instrument includes a pressure gauge 5 or a thermometer.

[0035] Embodiment 3

[0036] This embodiment is a further optimization and refinement of the tooling structure based on Embodiment 2, specifically as follows:

[0037] The front end of the flow channel 3 of the blind flange 2 installed at the upper end of the base frame 1 is connected to the medium outlet pipe, and a pressure gauge 5 is installed at the rear end. The front end of the flow channel 3 of the blind flange 2 installed at the lower end of the base frame 1 is connected to the medium inlet pipe, and a pressure gauge 5 is installed at the rear end. In this embodiment, the medium flowing in the medium inlet pipe and the medium outlet pipe is water. When in use, water is introduced into the pipeline valve from the lower blind flange 2, and when the pipeline valve cavity is filled with water, it is discharged from the upper blind flange 2. As Figure 3-4 shown.

[0038] Embodiment 4

[0039] This embodiment is a further optimization and refinement of the structure of the base frame 1 based on Embodiment 3, specifically as follows:

[0040] The base frame 1 includes a lower cross beam 6, lower longitudinal beams 7, columns 8, and an upper cross beam 9. The left and right ends of the lower cross beam 6 are respectively provided with lower longitudinal beams 7 to form an H-shaped structure. Columns 8 are respectively arranged on the two lower longitudinal beams 7. Reinforcing rib plates are also arranged at the lower ends of the columns 8. The reinforcing rib plates are fixedly connected to the columns 8 and the lower longitudinal beams 7 respectively, providing a solid bottom support for the overall structure. The upper ends of the two columns 8 are provided with an upper cross beam 9 to form a solid rectangular frame structure. The upper ends of the columns 8 are skillfully connected to the upper cross beam 9, ensuring the vertical stability of the frame, and at the same time leaving enough space for the installation of subsequent components. The entire frame can be fixed by welding, and a rectangular opening for pressure test inspection operation is formed in the middle. The blind flange 2 is located within this rectangular opening. The blind flange 2 located at the lower end of the base frame 1 is fixed to the lower cross beam 6, and the blind flange 2 located at the upper end of the base frame 1 is installed on the upper cross beam 9. The lower cross beam 6, lower longitudinal beams 7, columns 8, and upper cross beam 9 are all made of I-beams. It can be understood that other section steels or square tubes, etc. can also be used.

[0041] Embodiment 5

[0042] This embodiment is a further optimization and refinement of the tooling structure based on Embodiment 4, specifically as follows:

[0043] The multi-specification and multi-model pipeline valve pressure test tooling described in this embodiment further includes a screw rod 10. The screw rod 10 is arranged on the upper cross beam 9. The screw rod 10 penetrates through the upper cross beam 9 and is threadedly connected to the upper cross beam 9. The blind flange 2 installed at the upper end of the base frame 1 is connected to the lower end of the screw rod 10. By adjusting the distance and clamping force between the two blind flanges 2 through the screw rod 10, the height adjustment function is realized. This design not only ensures the structural stability but also endows the tooling body with excellent adjustability, meeting the precise control requirements for different heights of various specifications and models of pipeline valves in different application scenarios and increasing its applicable scenarios. A handwheel 11 is arranged at the upper end of the screw rod 10 for facilitating the operation of rotating the screw rod 10. One connection method between the screw rod 10 and the handwheel 11 is: setting the upper end of the screw rod 10 as a multi-prismatic shape (such as a hexagonal prism), and arranging a corresponding multi-prismatic hole in the middle of the handwheel 11. The upper end of the screw rod 10 is inserted into the multi-prismatic hole of the handwheel 11 for use, which is convenient for disassembly and assembly. The screw rod 10 is selected as a round steel bar. The selection of round steel bar material has a good guarantee for its mechanical properties and durability. The structure of the selected screw rod 10 lies in adjusting the height of the tooling. Just gently rotate the screw rod 10, and the tooling fixture can be accurately adjusted to the ideal height according to actual needs. Whether it is matching the interfaces of different equipment or adapting to the operating habits of operators, it can be easily handled.

[0044] Embodiment 6

[0045] This embodiment provides a specific structure for the threaded connection between the screw rod 10 and the upper cross beam 9 based on Embodiment 5:

[0046] The multi - specification and multi - model pipeline valve pressure test tooling described in this embodiment further includes a nut sleeve 12. A through - hole penetrating the upper cross - beam 9 is provided on the upper cross - beam 9, and the nut sleeve 12 is arranged in the through - hole. The nut sleeve 12 can be fixed by welding, and the screw 10 is threadedly connected with the nut sleeve 12. The special through - hole on the upper cross - beam 9 allows the nut sleeve 12 to pass through vertically, and there is a precise thread fit between the nut sleeve 12 and the screw 10. Through the cooperation of the nut and the screw 10, the main body of the tooling can adjust the height of the upper blind flange 2, easily adapting to the height requirements of different pipeline valves. Whether it is adjusted to the optimal operating height or matched with the interface of a specific device, it can handle it with ease. The nut sleeve 12 is carefully installed on the upper cross - beam 9 of the main body of the tooling, and the specially provided through - hole on the upper cross - beam 9 provides a stable installation foundation for it.

[0047] Example 7

[0048] Based on Example 6, this embodiment provides a specific structure for connecting the screw 10 and the upper blind flange 2:

[0049] In this embodiment, an end - cover 13 is provided on the blind flange 2 installed at the upper end of the base frame 1. The lower end of the screw 10 is connected to the end - cover 13, and the screw 10 can rotate along the connection with the end - cover 13. Specifically, the end - cover 13 has a flange extending towards the axis of the opening at the upper - end opening. A reverse T - shaped structure is provided at the lower end of the screw 10, and the two cooperate to achieve rotational connection. It can also be that a ring groove is provided at the lower end of the screw 10, and the flange at the upper end of the end - cover 13 is clamped in the ring groove to achieve rotational connection. There can also be other ways of rotational connection, such as the end - cover 13 being fixedly connected to the screw 10, while the end - cover 13 is rotatably connected to the blind flange 2. For the existing technical means, there are many alternative ways, which will not be elaborated one by one here.

[0050] Through the setting of the end - cover 13, the upper blind flange 2 is rotatably connected to the screw 10, preventing synchronous rotation and ensuring independent adjustment. The screw 10 end - cover 13 is cleverly installed on the blind flange 2, forming a coordinated but independently operating system with the screw 10. Its core function is that when the operator adjusts the screw 10 through the handwheel 11 to change the height of the tooling, the screw 10 end - cover 13 can effectively prevent the blind flange 2 from rotating together with the screw 10. This design ensures the stability and independence of the blind flange 2. No matter how the screw 10 rotates and adjusts, the blind flange 2 always remains in a fixed position, providing a stable working platform for the main body of the tooling.

[0051] Example 8

[0052] Based on Example 7, this embodiment further optimizes and refines the structure of the blind flange 2, specifically as follows:

[0053] On one side surface of the blind flange 2 where the valve communication hole 4 is provided, a waterline 14 is also provided. Waterline 14 (flange sealing groove): It is machined on the end face of the blind flange 2, aiming to provide a precise sealing surface to cooperate with the pipeline valve body / gasket. The addition of the waterline 14 increases the contact area between the sealing surface and the pipeline valve body / gasket, thereby increasing the contact friction force, significantly enhancing the sealing performance of the connection part, effectively preventing gas or liquid leakage, and ensuring the safety and efficiency of the pipeline valve body / system.

[0054] Example 9

[0055] This embodiment is a further optimization and refinement of the structure of the blind flange 2 on the basis of Example 8. Specifically:

[0056] Step holes 15 are provided on the blind flanges 2 at both ends of the flow channel 3, and internal threads are provided in the step holes 15 to facilitate the installation and connection of external devices.

[0057] This application has the following advantages:

[0058] Versatility and expansion potential: The design of the flow channel 3 and the valve communication hole 4 on the blind flange 2 can be used for precise fluid control and pressure monitoring, etc. It not only meets the basic fluid management and pressure monitoring requirements, but also reserves space for future function expansion, adding infinite possibilities to the tooling main body.

[0059] Reliability and durability: From the upper and lower cross beams 6 to the columns 8, and then to the precise fit between the nut sleeve 12 and the screw 10, each link is carefully designed and manufactured to ensure the long-term stable operation of the tooling main body in a complex industrial environment.

[0060] Pipeline valve pressure test operation process:

[0061] 1. Place the pipeline valve to be pressure-tested in the middle position of the lower blind flange 2 of this tooling;

[0062] 2. Rotate the handwheel 11, and the upper blind flange 2 descends to press the pipeline valve to ensure its sealing performance;

[0063] 3. After connecting the pressure test supporting system at the pressure test medium channel (including the connection of each medium pipe on the flow channel 3 and the connection of the pressure gauge 5, etc.), conduct the pressure test. Open all the valves of the main pipeline and close the valves of each branch (the pressure test supporting system is not shown in the attached drawings, and conventional existing technical means can be used);

[0064] 4. Install the pressure boosting device and open the end relief valve (not shown in the attached drawings, and conventional existing technology can be used);

[0065] 5. Inject water into the pipeline valve to discharge the air in the pipeline valve;

[0066] 6. After the water in the pipeline valve is filled, boost the pressure to the set test pressure;

[0067] 7. During the pressure boosting process, conduct a patrol inspection of the entire line, check for leaks, and make corresponding records.

[0068] In addition, in the description of the present utility model, unless otherwise specified, if the terms "multiple", "multiple roots", "multiple groups" are used, their meanings are two or more, and the meanings of "several", "several roots", "several groups" are one or more. In the description of the present utility model, it should be noted that if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are used to indicate the orientation or positional relationship, it is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, so it cannot be understood as a limitation to the present utility model. In addition, if the terms "first", "second", "third" are used only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0069] The specific embodiments of the present utility model have been described in detail above with reference to the drawings, but the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those of ordinary skill in the art, various changes can be made without departing from the purpose of the present utility model.

Claims

1. A multi-specification and multi-model pipeline valve pressure testing tool, characterized by: It includes a base frame and a blind flange. The upper and lower ends of the base frame are respectively provided with blind flanges. The two blind flanges are arranged opposite to each other. The blind flange located at the upper end of the base frame can be lifted up and down. The blind flange is provided with a flow channel and a valve connecting hole. The flow channel passes through the blind flange from front to back. The valve connecting hole is arranged on the surface of the blind flange and is connected with the flow channel.

2. The multi-specification and multi-model pipeline valve pressure testing tool according to claim 1 is characterized in that: One end of the flow channel is used to connect to the medium inlet pipe, and the other end is used to connect to the medium outlet pipe or instrument, and the instrument includes a pressure gauge or a temperature gauge.

3. The multi-specification and multi-model pipeline valve pressure testing tool according to claim 2 is characterized in that: The front end of the flow channel of the blind flange installed on the upper end of the base is connected to the medium pipe, and the rear end is installed with a pressure gauge. The front end of the flow channel of the blind flange installed on the lower end of the base is connected to the medium pipe, and the rear end is installed with a pressure gauge.

4. The multi-specification and multi-model pipeline valve pressure testing tool according to any one of claims 1 to 3, characterized in that: The base frame includes a lower cross beam, a lower longitudinal beam, a column and an upper cross beam, the left and right ends of the lower cross beam are respectively provided with lower longitudinal beams, the columns are provided on the lower longitudinal beam, the upper ends of the two columns are provided with an upper cross beam, the blind plate flange located at the lower end of the base frame is fixed on the lower cross beam, and the lower cross beam, the lower longitudinal beam, the columns and the upper cross beam are all made of I-beams.

5. The multi-specification and multi-model pipeline valve pressure testing tool according to claim 4 is characterized in that: It also includes a screw rod, which is arranged on the upper cross beam, and the screw rod passes through the upper cross beam and is threadedly connected to the upper cross beam. A blind plate flange installed on the upper end of the base frame is connected to the lower end of the screw rod, and a hand wheel is arranged on the upper end of the screw rod.

6. The multi-specification and multi-model pipeline valve pressure testing tool according to claim 5 is characterized in that: It also includes a nut sleeve. The upper cross beam is provided with a through hole penetrating the upper cross beam. The nut sleeve is arranged in the through hole. The screw rod is threadedly connected with the nut sleeve.

7. The multi-specification and multi-model pipeline valve pressure testing tool according to claim 6 is characterized in that: An end cover is arranged on the blind flange installed on the upper end of the base frame, the lower end of the screw rod is connected with the end cover, and the screw rod can rotate along the connection with the end cover.

8. The multi-specification and multi-model pipeline valve pressure testing tool according to claim 7 is characterized in that: A water line is also provided on one side surface of the blind flange where the valve connecting hole is provided.

9. The multi-specification and multi-model pipeline valve pressure testing tool according to claim 8 is characterized in that: Stepped holes are arranged on the blind flanges at both ends of the flow channel, and internal threads are arranged in the stepped holes.

Images