A valve housing strength testing apparatus

Abstract

The utility model discloses a kind of test equipment of valve housing strength, it is related to valve housing technical field, including transparent box and sealing assembly;Transparent box: inside lower side is equipped with electric telescopic rod, fixed support plate is equipped on the telescopic arm of electric telescopic rod, the upside of support plate is placed with valve body, water injection assembly and pressure relief assembly are installed on the upside of support plate, water injection assembly and pressure relief assembly are connected with the inlet pipe and outlet pipe of valve body respectively, clamping assembly and smearing assembly are installed on the side of support plate, support assembly is installed in the lower side of transparent box inside;Sealing assembly: include transparent plate, rack, fixed plate, first motor and gear, two corresponding strip-shaped ports are set in the upper end of left and right sides of transparent box, can adjust the pressure of internal medium according to demand, can avoid operator fabric safety hazard simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of valve body technology, specifically to a testing device for the strength of valve bodies. Background Technology

[0002] Valve shell strength testing is a core step in ensuring valve quality and safe operation. It verifies structural integrity and resistance to deformation by simulating high-pressure environments under extreme conditions, detecting cracks, leaks, or material defects in the shell, and assessing stability under dynamic loads (such as water hammer). This test effectively prevents safety hazards caused by manufacturing defects or transportation damage, ensuring reliable sealing and long-term durability of valves in complex operating conditions, and meeting the mandatory safety requirements for pressure equipment in industry standards. It is an irreplaceable and crucial step in the safety control of industrial pipeline systems. Existing valve body strength testing equipment mostly adopts a single external pressure or static water pressure testing method, which is difficult to truly simulate the dynamic changes of internal medium pressure under the actual working conditions of the valve. At the same time, traditional testing equipment generally has safety protection defects, such as high-pressure liquids being prone to splashing, lack of automated protective covers or emergency pressure relief mechanisms, posing safety hazards to operators. Therefore, we propose a valve body strength testing equipment. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the existing defects and provide a valve body strength testing device that can adjust the pressure of the internal medium according to the requirements, while avoiding safety hazards to operators. It can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a testing device for valve body strength, comprising a transparent box and a sealing assembly; Transparent box: An electric telescopic rod is installed on the lower side of the interior. A support plate is fixed on the telescopic arm of the electric telescopic rod. A valve body is placed on the upper side of the support plate. A water injection component and a pressure relief component are installed on the upper side of the support plate. The water injection component and the pressure relief component are respectively connected to the water inlet pipe and the water outlet pipe of the valve body. A clamping component and a coating component are installed on the side of the support plate. A support component is installed on the lower side of the interior of the transparent box. Sealing assembly: includes a transparent plate, a rack, a fixing plate, a first motor, and gears. Two corresponding slots are opened at the upper ends of the left and right sides of the transparent box. A transparent plate is slidably connected inside each slot. A rack is fixed to the lower side of the transparent plate. Two corresponding fixing plates are fixed to the left and right sides of the transparent box. A first motor is mounted on the rear side of each fixing plate. Gears are fixed to the output shaft of the first motor, and the two gears mesh with the two racks respectively. The input end of the first motor is electrically connected to the output end of an external PLC controller. The sealing assembly seals the transparent box.

[0005] Furthermore, the water injection assembly includes a hydraulic pump, a water outlet pipe, a first pressure sensor, and a guide pipe. The hydraulic pump is mounted on the upper side of the support plate. The water outlet pipe is fixed inside the water outlet of the hydraulic pump. The left end of the water outlet pipe is connected to the water inlet pipe of the valve body through a connecting flange. The first pressure sensor is installed inside the water outlet pipe. The guide pipe is fixed inside the water inlet of the hydraulic pump. The guide pipe is located below the support plate. The input end of the hydraulic pump is electrically connected to the output end of an external PLC controller. The first pressure sensor is bidirectionally electrically connected to the external PLC controller. Water is injected into the interior of the valve body by setting up the water injection assembly.

[0006] Furthermore, the pressure relief assembly includes a drain pipe, a second pressure sensor, a pressure relief pipe, and a pressure relief solenoid valve. The left end of the outlet pipe fixed inside the valve body is fixed with a drain pipe via a connecting flange. The second pressure sensor is installed inside the drain pipe. A pressure relief hole is opened on the circumference of the drain pipe, and a pressure relief pipe is fixed inside the pressure relief hole. A pressure relief solenoid valve is installed on the circumference of the pressure relief pipe. The second pressure sensor is bidirectionally electrically connected to an external PLC controller, and the input end of the pressure relief solenoid valve is electrically connected to the output end of the external PLC controller. Drainage is achieved through the drain pipe, and pressure is relieved through the pressure relief pipe.

[0007] Furthermore, the support assembly includes a support frame and a third pressure sensor. The support frame is fixed to the lower side inside the transparent box, and a groove is opened on the upper side of the support frame. The third pressure sensor is installed inside the groove and is bidirectionally electrically connected to an external PLC controller.

[0008] Furthermore, the coating assembly includes a fixing block, a U-shaped tube, a foam nozzle, a feed hose, and a connecting flange ring. The fixing block is fixed to the lower side of the support plate, and a fixing hole is opened in the middle of the fixing block. The U-shaped tube is fixed inside the fixing hole, and foam nozzles are installed inside the two ports on the upper side of the U-shaped tube. The valve body is located between the two foam nozzles. An opening is opened at the rear end of the circumferential surface of the U-shaped tube, and a feed hose is fixed inside the opening. A connecting flange ring is fixed at the rear end of the circumferential surface of the feed hose. The fixing block is in contact with the third pressure sensor. By setting the coating assembly to spray foam on the surface of the valve body, it is convenient for users to judge whether the valve body leaks during the test.

[0009] Furthermore, the clamping assembly includes a clamping plate, an anti-slip plate, a bidirectional screw, and a second motor. A strip-shaped opening is provided on the upper side of the support plate, and the clamping plate is slidably connected inside the strip-shaped opening. Anti-slip plates are fixed to the sides of the clamping plate, and the two anti-slip plates respectively fit against the front and rear sides of the valve body. Threaded holes are provided on the lower edge of the clamping plate, with two threads of opposite direction. A bidirectional screw is threadedly connected inside the two threaded holes. The bidirectional screw is welded together from two threaded rods with opposite directions. The bidirectional screw is rotatably connected inside the strip-shaped opening. A second motor is installed on the front side of the support plate, and the output shaft of the second motor is fixed to the front end of the bidirectional screw. The input end of the second motor is electrically connected to the output end of an external PLC controller. The clamping assembly clamps and fixes the valve body.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows: This valve body strength testing equipment has the following advantages: 1. Through the coordinated operation of hydraulic pump and multi-stage pressure sensors, the pressure of the test medium can be monitored and dynamically adjusted in real time, accurately simulating the complex pressure changes under actual valve operating conditions; combined with the automatically closing transparent sealing box, a physical isolation barrier is formed to effectively prevent accidental ejection of high-pressure fluid and ensure the safety of operators. 2. An adaptive clamping mechanism driven by a bidirectional screw is adopted to ensure the valve body is stably fixed during the test; combined with a foam spraying system and a visual observation structure, the shell defects can be visualized and detected in real time throughout the test, which significantly improves the efficiency of identifying minute leaks and reduces the need for manual intervention. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the front structure of this utility model; Figure 2 This is a schematic diagram of the pressure relief component of this utility model; Figure 3 This is a schematic diagram of the clamping component structure of this utility model.

[0012] In the diagram: 1. Transparent box, 2. Electric telescopic rod, 3. Support plate, 4. Sealing assembly, 41. Transparent plate, 42. Rack, 43. Fixing plate, 44. First motor, 45. Gear, 5. Water injection assembly, 51. Hydraulic pump, 52. Water outlet pipe, 53. First pressure sensor, 54. Guide pipe, 6. Pressure relief assembly, 61. Drain pipe, 62. Second pressure sensor, 63. Pressure relief pipe, 64. Pressure relief solenoid valve, 7. Support assembly, 71. Support frame, 72. Third pressure sensor, 8. Coating assembly, 81. Fixing block, 82. U-tube, 83. Foam nozzle, 84. Feed hose, 85. Connecting flange ring, 9. Clamping assembly, 91. Clamping plate, 92. Anti-slip plate, 93. Bidirectional screw, 94. Second motor, 10. Valve body. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0014] Please see Figure 1-3 This embodiment provides a technical solution: a test device for valve body strength, including a transparent box 1 and a sealing assembly 4; Transparent Box 1: An electric telescopic rod 2 is installed on the lower side of the interior. A support plate 3 is fixed on the telescopic arm of the electric telescopic rod 2. A valve body 10 is placed on the upper side of the support plate 3. A water injection component 5 and a pressure relief component 6 are installed on the upper side of the support plate 3. The water injection component 5 and the pressure relief component 6 are respectively connected to the water inlet pipe and the water outlet pipe of the valve body 10. A clamping component 9 and a coating component 8 are installed on the side of the support plate 3. A support component 7 is installed on the lower side of the interior of the transparent box 1. The water injection component 5 includes a hydraulic pump 51, a water outlet pipe 52, a first pressure sensor 53, and a guide pipe 54. A hydraulic pump 51 is installed on the upper side of the support plate 3. A water outlet pipe 52 is fixed inside the water outlet hole of the hydraulic pump 51. The left end of the water outlet pipe 52 is connected to the water inlet pipe of the valve body 10 through a connecting flange. The hydraulic pump 51 is equipped with a first pressure sensor 53. A guide pipe 54 is fixed inside the inlet of the hydraulic pump 51, located below the support plate 3. The input of the hydraulic pump 51 is electrically connected to the output of an external PLC controller. The first pressure sensor 53 is bidirectionally electrically connected to the external PLC controller. The pressure relief assembly 6 includes a drain pipe 61, a second pressure sensor 62, a pressure relief pipe 63, and a pressure relief solenoid valve 64. The left end of the outlet pipe fixed inside the valve body 10 is fixed to the drain pipe 61 via a connecting flange. The second pressure sensor 62 is installed inside the drain pipe 61. A pressure relief hole is opened on the circumference of the drain pipe 61, and a pressure relief pipe 63 is fixed inside the pressure relief hole. A pressure relief solenoid valve 64 is installed on the circumference of the pressure relief pipe 63. The second pressure sensor 53 is installed inside the drain pipe 61, and a pressure relief hole is opened on the circumference of the drain pipe 61. The pressure relief pipe 63 is fixed inside the pressure relief hole, and a pressure relief solenoid valve 64 is installed on the circumference of the pressure relief pipe 63. Sensor 62 is bidirectionally electrically connected to an external PLC controller. The input terminal of the pressure relief solenoid valve 64 is electrically connected to the output terminal of the external PLC controller. The support assembly 7 includes a support frame 71 and a third pressure sensor 72. The support frame 71 is fixed to the lower side inside the transparent box 1. A groove is opened on the upper side of the support frame 71, and the third pressure sensor 72 is installed inside the groove. The third pressure sensor 72 is bidirectionally electrically connected to an external PLC controller. The coating assembly 8 includes a fixing block 81, a U-shaped tube 82, a foam nozzle 83, a feed hose 84, and a connecting flange ring 85. The fixing block 81 is fixed to the lower side of the support plate 3. A fixing hole is opened in the middle of the fixing block 81, and a U-shaped tube 82 is fixed inside the fixing hole. Both upper ports of the U-shaped tube 82 are fitted with... Equipped with foam nozzles 83, the valve body 10 is located between two foam nozzles 83. An opening is formed at the rear end of the circumferential surface of the U-shaped tube 82, and a feed hose 84 is fixed inside the opening. A connecting flange ring 85 is fixed at the rear end of the circumferential surface of the feed hose 84. A fixing block 81 is in contact with a third pressure sensor 72. The clamping assembly 9 includes a clamping plate 91, an anti-slip plate 92, a bidirectional screw 93, and a second motor 94. A strip-shaped opening is formed on the upper side of the support plate 3, and the clamping plate 91 is slidably connected inside the strip-shaped opening. Anti-slip plates 92 are fixed to the sides of the clamping plate 91, and the two anti-slip plates 92 are respectively in contact with the front and rear sides of the valve body 10. Threaded holes are formed on the lower side of the clamping plate 91, with two opposite threads. The bidirectional screw 93 is connected to the internal threads of the two threaded holes.The bidirectional screw 93 is welded from two threaded rods with opposite threads. The bidirectional screw 93 is rotatably connected inside the slotted opening. A second motor 94 is mounted on the front side of the support plate 3. The output shaft of the second motor 94 is fixed to the front end of the bidirectional screw 93. The input end of the second motor 94 is electrically connected to the output end of an external PLC controller. The valve body 10 is clamped and fixed by a clamping assembly 9. Foam is sprayed onto the surface of the valve body 10 by a coating assembly 8, allowing the user to easily determine whether leakage occurs during testing. Drainage is achieved through a drain pipe 61, pressure is relieved through a pressure relief pipe 63, and water is injected into the valve body 10 through a water injection assembly 5. Sealing assembly 4 includes a transparent plate 41, a rack 42, a fixing plate 43, a first motor 44, and a gear 45. Two corresponding strip-shaped openings are opened at the upper ends of the left and right sides of the transparent box 1. The transparent plate 41 is slidably connected inside the strip-shaped openings. The rack 42 is fixed to the lower side of the transparent plate 41. Two corresponding fixing plates 43 are fixed to the left and right sides of the transparent box 1. The first motor 44 is installed on the rear side of the fixing plate 43. The gear 45 is fixed on the output shaft of the first motor 44. The two gears 45 mesh with the two racks 42 respectively. The input end of the first motor 44 is electrically connected to the output end of an external PLC controller. The transparent box 1 is sealed by setting the sealing assembly 4.

[0015] The working principle of the valve body strength testing device provided by this utility model is as follows: At the start of the test, the operator places the valve body 10 on the support plate 3, and then drives the bidirectional screw 93 to rotate through the second motor 94 of the clamping assembly 9, which drives the clamping plates 91 with opposite threads on both sides to move synchronously towards the center, so that the anti-slip plate 92 clamps the valve body 10. Then, by controlling the electric telescopic rod 2 to retract, the support plate 3 is driven to move down until the fixing block 81 at the bottom of the support plate 3 contacts the support frame 71 of the support assembly 7. At this time, the fixing block 81 applies pressure to the third pressure sensor 72 in the groove. The sensor feeds back the contact pressure value to the PLC controller in real time. If the pressure value reaches the preset threshold, the PLC determines that the support plate 3 has been accurately positioned. At this time, the first motor 44 of the sealing assembly 4 starts automatically, and drives the left and right transparent plates 41 along the transparent box through the meshing of the gear 45 and the rack 42. The strip-shaped opening of valve 1 slides closed to form a sealed test space. At the same time, the hydraulic pump 51 draws the medium through the guide pipe 54 and injects water into the valve body 10 through the outlet pipe 52. The first pressure sensor 53 continuously monitors the inlet water pressure. When the pressure approaches the test set value, the PLC controller dynamically adjusts the output of the hydraulic pump 51 to achieve precise pressure stabilization. Meanwhile, the second pressure sensor 62 of the pressure relief component 6 monitors the pressure of the drain pipe 61. If the pressure is over-pressurized, the pressure relief solenoid valve 64 is opened immediately to release the pressure through the pressure relief pipe 63 to ensure system safety. During the pressurization process, the coating component 8 delivers test foam to the U-shaped pipe 82 through the feed hose 84. The foam nozzle 83 sprays the foam evenly onto the surface of the valve body 10. The operator observes the changes in the foam layer through the transparent box 1 and the transparent plate 41. If bubbles or ruptures appear, it is determined that there is a leak in the shell. Under these conditions, the strength test of the valve body 10 can be achieved.

[0016] It is worth noting that the external PLC controller disclosed in the above embodiments is specifically a Siemens S7-200. The electric telescopic rod 2, the first motor 44, the second motor 94, the hydraulic pump 51, the first pressure sensor 53, the second pressure sensor 62, the pressure relief solenoid valve 64, the third pressure sensor 72, and the second motor 94 can be freely configured according to the actual application scenario. The control switch group controls the operation of the electric telescopic rod 2, the first motor 44, the second motor 94, the hydraulic pump 51, the pressure relief solenoid valve 64, and the second motor 94 using methods commonly used in the prior art.

[0017] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A testing device for the strength of a valve body, characterized in that: Includes a transparent box (1) and a sealing assembly (4); Transparent box (1): An electric telescopic rod (2) is installed on the lower side inside. A support plate (3) is fixed on the telescopic arm of the electric telescopic rod (2). A valve body (10) is placed on the upper side of the support plate (3). A water injection component (5) and a pressure relief component (6) are installed on the upper side of the support plate (3). The water injection component (5) and the pressure relief component (6) are respectively connected to the water inlet pipe and the water outlet pipe of the valve body (10). A clamping component (9) and a coating component (8) are installed on the side of the support plate (3). A support component (7) is installed on the lower side inside the transparent box (1). Sealing assembly (4): includes a transparent plate (41), a rack (42), a fixing plate (43), a first motor (44), and a gear (45). The upper ends of the left and right sides of the transparent box (1) have two corresponding strip-shaped openings. The transparent plate (41) is slidably connected inside the strip-shaped openings. The rack (42) is fixed on the lower side of the transparent plate (41). The left and right sides of the transparent box (1) have two corresponding fixing plates (43). The first motor (44) is installed on the rear side of the fixing plate (43). The gear (45) is fixed on the output shaft of the first motor (44). The two gears (45) mesh with the two racks (42) respectively. The input end of the first motor (44) is electrically connected to the output end of an external PLC controller.

2. The testing equipment for valve body strength according to claim 1, characterized in that: The water injection assembly (5) includes a hydraulic pump (51), a water outlet pipe (52), a first pressure sensor (53), and a guide pipe (54). The hydraulic pump (51) is installed on the upper side of the support plate (3). The water outlet pipe (52) is fixed inside the water outlet hole of the hydraulic pump (51). The left end of the water outlet pipe (52) is connected to the water inlet pipe of the valve body (10) through a connecting flange. The first pressure sensor (53) is installed inside the water outlet pipe (52). The guide pipe (54) is fixed inside the water inlet of the hydraulic pump (51). The guide pipe (54) is located below the support plate (3). The input end of the hydraulic pump (51) is electrically connected to the output end of an external PLC controller. The first pressure sensor (53) is bidirectionally electrically connected to the external PLC controller.

3. The testing equipment for valve body strength according to claim 1, characterized in that: The pressure relief assembly (6) includes a drain pipe (61), a second pressure sensor (62), a pressure relief pipe (63), and a pressure relief solenoid valve (64). The left end of the outlet pipe fixed inside the outlet of the valve body (10) is fixed with a drain pipe (61) via a connecting flange. The second pressure sensor (62) is installed inside the drain pipe (61). A pressure relief hole is opened on the circumferential surface of the drain pipe (61). The pressure relief pipe (63) is fixed inside the pressure relief hole. The pressure relief solenoid valve (64) is installed on the circumferential surface of the pressure relief pipe (63). The second pressure sensor (62) is bidirectionally electrically connected to an external PLC controller. The input end of the pressure relief solenoid valve (64) is electrically connected to the output end of an external PLC controller.

4. The testing equipment for valve body strength according to claim 1, characterized in that: The support assembly (7) includes a support frame (71) and a third pressure sensor (72). The support frame (71) is fixed to the lower side inside the transparent box (1). A groove is provided on the upper side of the support frame (71). The third pressure sensor (72) is installed inside the groove. The third pressure sensor (72) is bidirectionally electrically connected to an external PLC controller.

5. The testing equipment for valve body strength according to claim 4, characterized in that: The coating assembly (8) includes a fixing block (81), a U-shaped tube (82), a foam nozzle (83), a feed hose (84), and a connecting flange ring (85). The fixing block (81) is fixed on the lower side of the support plate (3). A fixing hole is opened in the middle of the fixing block (81). The U-shaped tube (82) is fixed inside the fixing hole. Foam nozzles (83) are installed inside the two ports on the upper side of the U-shaped tube (82). The valve body (10) is located between the two foam nozzles (83). An opening is opened at the rear end of the circumferential surface of the U-shaped tube (82). The feed hose (84) is fixed inside the opening. A connecting flange ring (85) is fixed at the rear end of the circumferential surface of the feed hose (84). The fixing block (81) is in contact with the third pressure sensor (72).

6. The testing equipment for valve body strength according to claim 1, characterized in that: The clamping assembly (9) includes a clamping plate (91), an anti-slip plate (92), a bidirectional screw (93), and a second motor (94). The upper side of the support plate (3) has a strip-shaped opening, and the clamping plate (91) is slidably connected inside the strip-shaped opening. The side of the clamping plate (91) is fixed with an anti-slip plate (92). The two anti-slip plates (92) are respectively attached to the front and rear sides of the valve body (10). The lower side of the clamping plate (91) has a threaded hole with opposite threads. The two threaded holes are connected to the bidirectional screw (93) with threads inside. The bidirectional screw (93) is welded from two threaded rods with opposite threads. The bidirectional screw (93) is rotatably connected inside the strip-shaped opening. The front side of the support plate (3) is equipped with a second motor (94). The output shaft of the second motor (94) is fixed to the front end of the bidirectional screw (93). The input end of the second motor (94) is electrically connected to the output end of an external PLC controller.

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