Heat preservation jacket corrugated pipe valve pressure test tool

Abstract

The utility model discloses a heat preservation jacket bellows valve pressure test tool, which comprises a base, two clamping seats and a power piece, the two clamping seats are arranged, the sides, close to each other, of the two clamping seats are respectively provided with a positioning ring used for positioning and clamping a bellows valve, the power piece is installed on the base, and the power piece is installed on the base. According to the corrugated pipe valve compression resistance testing device, when a corrugated pipe valve is subjected to compression resistance testing, the valve is closed firstly, then water in the water storage cavity is guided into the corrugated pipe valve from the water inlet pipe through the water pump, and then the corrugated pipe valve is clamped in the water storage cavity through the water outlet pipe. Water pressure is utilized to push the control valve so that water can enter one side of the valve along the water outlet pipe and the through hole and flow into the heat preservation jacket, the pressure resistance of the heat preservation jacket is detected by controlling the water pressure, after pressure testing is completed, water can enter the water storage cavity along the backflow pipe, and experiment operation is simple and convenient.

Description

Technical Field

[0001] The utility model discloses a pressure testing tool for a heat-insulating jacketed bellows valve, belonging to the technical field of valve detection equipment. Background Art

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Valves can be used to control the flow of various types of fluids such as air, water, steam, various corrosive media, mud, oil, liquid metal, and radioactive media. In the transportation of some media, there are certain requirements for the medium's transportation temperature. When the medium temperature drops, it is easy to crystallize and affect its fluidity. Therefore, it is necessary to add an insulation jacket to the outside of the valve to form an insulation cavity between the insulation jacket and the valve body. This can reduce the heat exchange between the valve and the outside world. The insulation jacket is generally formed by welding, so it is necessary to test its sealing and pressure resistance after welding. The existing test equipment is not very convenient in overall operation and cannot achieve the effect of rapid pressure resistance testing. Utility Model Content

[0003] The utility model aims to solve the problems in the prior art and provides a pressure testing tool for a heat-insulating jacketed bellows valve.

[0004] The utility model achieves the above-mentioned purpose through the following technical scheme: a heat-insulating jacket bellows valve pressure test tool, comprising a base, a clamping seat and a power piece, wherein two clamping seats are provided, and a positioning ring for positioning and clamping the bellows valve is provided on the side where the two clamping seats are close to each other, the power piece is installed on the base and is used to drive the two clamping seats to approach or move away from each other, a through hole is provided at the lowest point of the clamping seat close to the positioning ring, and a three-way pipe is provided on one side of the clamping seat, the three-way pipe has an inlet pipe, a return pipe and an outlet pipe, the outlet pipe is connected with the through hole, a water storage cavity is provided in the base, the inlet pipe and the return pipe are both connected with the water storage cavity through a hose, a water pump is provided at one end of the hose connected with the inlet pipe, an active cavity is provided in the middle of the three-way pipe, a control valve is provided in the active cavity, and under normal conditions, the control valve keeps the inlet pipe and the outlet pipe in a disconnected state, while the return pipe and the outlet pipe are in a connected state.

[0005] Preferably, the control valve includes a first spring, a sealing plug and a second spring, the active cavity includes a first mounting hole and a second mounting hole, the diameter of the second mounting hole is smaller than the diameter of the first mounting hole, the water inlet pipe is connected to the first mounting hole, and the return pipe is connected to the second mounting hole, the sealing plug is a cylindrical structure, and its sliding seal is arranged in the first mounting hole, the first spring and the second spring are respectively located on both sides of the sealing plug, and a cover for closing the active cavity is arranged on the side of the three-way pipe.

[0006] Preferably, positioning posts are provided on both sides of the sealing plug, and the two positioning posts are respectively located on the inner sides of the first spring and the second spring.

[0007] Preferably, a first flange is provided on the water inlet pipe and the water outlet pipe, a fixing plate is provided on the clamping seat, the first flange and the fixing plate are fixedly connected by bolts, a second flange is provided on the water outlet pipe, and the second flange and the clamping seat are fixedly connected by bolts.

[0008] Preferably, the positioning ring is provided with an annular groove cooperating with the thermal insulation jacket, and a sealing ring is provided in the annular groove.

[0009] Preferably, the power part includes a guide rod, a screw and a motor, and two mounting blocks are provided on the base. Both ends of the guide rod and the screw are rotatably connected to the mounting blocks. The screw has two sections of threads with opposite rotation directions. The two clamping seats are slidably arranged with the guide rod, and the two clamping seats are threadedly connected to the screw.

[0010] Preferably, a guide hole is provided below the positioning ring corresponding to the base, and the guide hole is communicated with the water storage cavity.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] When conducting a pressure test on a bellows valve, first close the valve, then use a water pump to introduce water from the water inlet pipe into the water storage chamber, use water pressure to push the control valve so that water can flow into one side of the valve along the outlet pipe and the through hole, and flow into the insulation jacket. The pressure resistance of the insulation jacket is tested by controlling the water pressure. After the pressure test is completed, water can flow into the water storage chamber along the return pipe. The experimental operation is simple and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of the structure of a pressure test tool for a thermal insulation jacket bellows valve of the utility model. Figure 1 ;

[0014] Figure 2 This is a schematic diagram of the structure of a pressure test tool for a thermal insulation jacket bellows valve of the utility model. Figure 2 ;

[0015] Figure 3 for Figure 1 A partial enlarged view of the middle A;

[0016] Figure 4 This is a schematic diagram of the internal structure of the three-way pipe in the utility model;

[0017] Figure numerals: 1. positioning ring; 2. tee pipe; 3. base; 4. power part; 5. hose; 6. clamping seat; 7. bellows valve; 8. insulation jacket; 9. guide rod; 10. fixing plate; 11. guide hole; 12. mounting block; 13. annular groove; 14. through hole; 15. sealing ring; 16. motor; 17. screw; 18. water inlet pipe; 19. first spring; 20. sealing cover; 21. first mounting hole; 22. second flange; 23. first flange; 24. water outlet pipe; 25. second mounting hole; 26. second spring; 27. sealing plug; 28. return pipe; 29. ​​positioning column. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] like Figure 1-Figure 4 As shown, a heat-insulating jacket bellows valve pressure test tooling includes a base 3, a clamping seat 6 and a power piece 4. Two clamping seats 6 are provided, and a positioning ring 1 for positioning and clamping the bellows valve 7 is provided on the side where the two clamping seats 6 are close to each other. The power piece 4 is installed on the base 3 and is used to drive the two clamping seats 6 to move closer to or away from each other. A through hole 14 is provided at the lowest point of the clamping seat 6 close to the positioning ring 1, and a three-way pipe 2 is provided on one side of the clamping seat 6. The three-way pipe 2 has a The water inlet pipe 18, the return pipe 28 and the water outlet pipe 24, the water outlet pipe 24 is connected to the through hole 14, a water storage chamber is arranged in the base 3, the water inlet pipe 18 and the return pipe 28 are connected to the water storage chamber through the hose 5, a water pump is arranged at one end of the hose 5 connected to the water inlet pipe 18, an active chamber is arranged in the middle of the three-way pipe 2, a control valve is arranged in the active chamber, and the control valve keeps the water inlet pipe 18 and the water outlet pipe 24 in a disconnected state under normal conditions, while the return pipe 28 and the water outlet pipe 24 are in a connected state.

[0020] The control valve includes a first spring 19, a sealing plug 27 and a second spring 26. The active cavity includes a first mounting hole 21 and a second mounting hole 25. The diameter of the second mounting hole 25 is smaller than the diameter of the first mounting hole 21. The water inlet pipe 18 is connected to the first mounting hole 21, and the return pipe 28 is connected to the second mounting hole 25. The sealing plug 27 is a cylindrical structure, and its sliding seal is arranged in the first mounting hole 21. The first spring 19 and the second spring 26 are respectively located on both sides of the sealing plug 27. A cover 20 for closing the active cavity is arranged on the side of the tee pipe 2. Positioning columns 29 are arranged on both sides of the sealing plug 27. The two positioning columns 29 are arranged on both sides of the sealing plug 27. The positioning column 29 is respectively located on the inner side of the first spring 19 and the second spring 26. The forces exerted by the first spring 19 and the second spring 26 on the sealing plug 27 remain balanced. When the water pump is pumping water, the water pressure can push the sealing plug 27 to move, so that the second spring 26 is compressed. In this way, the water inlet pipe 18 and the water outlet pipe 24 are connected, so that water can smoothly enter the insulation jacket 8, thereby performing a pressure test. When the water pump stops working, the second spring 26 drives the sealing plug 27 to reset, and allows water to automatically flow back from the water outlet pipe 24 and the loop pipe to the water storage chamber, thereby facilitating the removal of the bellows valve 7 from the clamping seat 6.

[0021] A first flange 23 is arranged on the water inlet pipe 18 and the water outlet pipe 24, a fixing plate 10 is arranged on the clamping seat 6, the first flange 23 and the fixing plate 10 are fixedly connected by bolts, a second flange 22 is arranged on the water outlet pipe 24, the second flange 22 and the clamping seat 6 are fixedly connected by bolts, and the three-way pipe 2 can be stably installed on the side of the clamping seat 6 by using the first flange 23, the second flange 22 and the fixing plate 10.

[0022] The positioning ring 1 is provided with an annular groove 13 which cooperates with the heat-insulating jacket 8 , and a sealing ring 15 is provided in the annular groove 13 . The sealing ring 15 can ensure the sealing between the heat-insulating jacket 8 and the positioning ring 1 to prevent water from seeping therebetween.

[0023] The power part 4 includes a guide rod 9, a screw 17 and a motor 16. Two mounting blocks 12 are provided on the base 3. Both ends of the guide rod 9 and the screw 17 are rotatably connected to the mounting blocks 12. The screw 17 has two sections of threads with opposite rotation directions. The two clamping seats 6 are slidably arranged with the guide rod 9, and the two clamping seats 6 are threadedly connected with the screw 17.

[0024] A guide hole 11 is provided below the base 3 corresponding to the positioning ring 1, and the guide hole 11 is connected to the water storage chamber. When the pressure test is completed, when the bellows valve 7 is removed from the clamping seat 6, the remaining water can fall from the guide hole 11 into the water storage chamber to avoid water splashing.

[0025] Working principle: When the bellows valve 7 is subjected to a pressure test, the motor 16 drives the screw 17 to rotate, so that the two clamping seats 6 are close to each other, and then the positioning ring 1 is used to position and clamp the bellows valve 7. Subsequently, the water in the water storage chamber is pumped to the water inlet pipe 18 by the water pump, and the sealing plug 27 is pushed by the water pressure to overcome the elastic force of the second spring 26, so that the sealing plug 27 slides in the movable chamber, and the water inlet pipe 18 is connected with the water outlet pipe 24, so that water can smoothly enter the positioning ring 1 from the through hole 14, and The water flows into the insulation chamber between the insulation jacket 8 and the valve body. The water pressure can be adjusted according to the pressure test needs to test the pressure resistance and sealing performance of the insulation jacket 8. When the test is completed, the water pump stops pumping water, and the sealing plug 27 is reset under the action of the second spring 26 until the elastic force of the first spring 19 and the second spring 26 reaches a balance. At this time, the water outlet pipe 24 is connected with the return pipe 28, so that the water in the bellows valve 7 and the insulation jacket 8 can automatically flow back from the water outlet pipe 24 and the return pipe 28 to the water storage chamber.

[0026] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0027] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A pressure test tool for a heat-insulating jacketed bellows valve, comprising a base (3), a clamping seat (6) and a power part (4), It is characterized in that Two clamping seats (6) are provided, and a positioning ring (1) for positioning and clamping the bellows valve (7) is provided on the side of the two clamping seats (6) close to each other. The power member (4) is installed on the base (3) and is used to drive the two clamping seats (6) to move closer to or farther from each other. A through hole (14) is provided at the lowest point of the clamping seat (6) close to the positioning ring (1), and a three-way pipe (2) is provided on one side of the clamping seat (6). The three-way pipe (2) has an inlet pipe (18), a return pipe (28) and an outlet pipe (24). The water outlet pipe (24) is connected to the through hole (14), a water storage chamber is arranged in the base (3), the water inlet pipe (18) and the return pipe (28) are both connected to the water storage chamber through a hose (5), a water pump is arranged at one end of the hose (5) connected to the water inlet pipe (18), an active chamber is arranged in the middle of the three-way pipe (2), a control valve is arranged in the active chamber, and the control valve, under normal conditions, keeps the water inlet pipe (18) and the water outlet pipe (24) in a disconnected state, while the return pipe (28) and the water outlet pipe (24) are in a connected state.

2. A pressure test tool for a thermal insulation jacketed bellows valve according to claim 1, It is characterized in that The control valve comprises a first spring (19), a sealing plug (27) and a second spring (26); the active cavity comprises a first mounting hole (21) and a second mounting hole (25); the diameter of the second mounting hole (25) is smaller than the diameter of the first mounting hole (21); the water inlet pipe (18) is connected to the first mounting hole (21); the return pipe (28) is connected to the second mounting hole (25); the sealing plug (27) is a cylindrical structure, and its sliding seal is arranged in the first mounting hole (21); the first spring (19) and the second spring (26) are respectively located on both sides of the sealing plug (27); and a sealing cover (20) for closing the active cavity is arranged on the side of the three-way pipe (2).

3. A pressure test tool for a thermal insulation jacketed bellows valve according to claim 2, It is characterized in that Positioning posts (29) are provided on both sides of the sealing plug (27), and the two positioning posts (29) are respectively located on the inner sides of the first spring (19) and the second spring (26).

4. A pressure test tool for a thermal insulation jacketed bellows valve according to claim 2, It is characterized in that A first flange (23) is provided on the water inlet pipe (18) and the water outlet pipe (24); a fixing plate (10) is provided on the clamping seat (6); the first flange (23) and the fixing plate (10) are fixedly connected by bolts; a second flange (22) is provided on the water outlet pipe (24); the second flange (22) and the clamping seat (6) are fixedly connected by bolts.

5. The pressure test tool for the thermal insulation jacket bellows valve according to claim 1, It is characterized in that The positioning ring (1) is provided with an annular groove (13) that matches the heat-insulating jacket (8), and a sealing ring (15) is provided in the annular groove (13).

6. A pressure test tool for a thermal insulation jacketed bellows valve according to claim 1, It is characterized in that The power member (4) comprises a guide rod (9), a screw rod (17) and a motor (16); two mounting blocks (12) are arranged on the base (3); both ends of the guide rod (9) and the screw rod (17) are rotatably connected to the mounting blocks (12); the screw rod (17) has two sections of threads with opposite rotation directions; the two clamping seats (6) are slidably arranged with the guide rod (9), and the two clamping seats (6) are threadedly connected with the screw rod (17).

7. The pressure test tool for the thermal insulation jacket bellows valve according to claim 1, It is characterized in that A flow guide hole (11) is provided below the base (3) corresponding to the positioning ring (1), and the flow guide hole (11) is communicated with the water storage chamber.

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