A multi-head pressure testing machine

Abstract

The utility model discloses a multi -head pressure testing machine belongs to pressure testing technical field, including base, the top middle part of base is provided with the rest seat, is provided with the arc groove on the top of rest seat, is provided with two groups of multi -head components and two groups of multi -head components distribute in the both sides of rest seat on the top of base, is provided with the shift component on the top of base, the utility model discloses the shift component of setting pushes one group of multi -head components to narrow the interval between two groups of multi -head components, makes two groups of multi -head components to the both ends port of pipe fitting and carries out the tight pressure sealing, and then to the inside of pipe fitting input liquid, and gradually increase the hydraulic pressure in the inside of pipe fitting to the pressure testing detection of pipe fitting, when the pipe fitting of different specification size is pressure tested and is detected, the multi -head component of setting can switch the pipe fitting port pressure tight piece of different, thereby being suitable for the sealing of different pipe fitting port, effectively improve the application scope of overall device.

Description

Technical Field

[0001] This utility model relates to the field of pressure testing technology, and in particular to a multi-head pressure testing machine. Background Technology

[0002] A valve is a mechanical device used to control the flow of fluids (liquid, gas, or powder). It is widely used in industries such as petroleum, chemical, power, and water supply. As valves are opening and closing devices, their sealing performance is subject to very strict requirements. Therefore, sealing performance tests must be conducted during the production process and before the valve leaves the factory. This requires pressure testing of the valve, which involves closing the valve and testing the pressure resistance and sealing of both sides of the valve cavity under specified pressure for a specified time.

[0003] For example, Chinese Patent Publication No. CN202710259U discloses a pressure testing machine for detecting the water pressure of valves used on water pipelines. It includes a control panel, a top-pressure testing platform, a gripper-type testing platform, and a water supply pressure device and a hydraulic drive device that cooperate with the top-pressure testing platform and the gripper-type testing platform, respectively. Both the water supply pressure device and the hydraulic drive device are controlled by the control panel. The gripper-type testing platform includes a gripper test stand, an active gripper mounted on the gripper test stand, two driven grippers that move synchronously with the active gripper, a push-pull cylinder located inside the gripper test stand for pushing the active gripper horizontally, and three clamping cylinders for driving the corresponding active and driven grippers to clamp the valve. The push-pull cylinder and the three clamping cylinders are respectively connected to the hydraulic drive device. This pressure testing machine, including the top-pressure testing platform and the gripper test stand, can test two valves simultaneously, improving testing efficiency. Furthermore, it has a high overall equipment utilization rate and saves costs.

[0004] The above application still has shortcomings. Different sizes of pressure plates are required for different specifications of valves. The existing pressure testing machine has a single usage method and can usually only test one type of valve. The pressure plate cannot be disassembled and replaced, which reduces its flexibility and limits its application scope.

[0005] Therefore, it is necessary to provide a multi-head pressure testing machine to solve the above-mentioned technical problems. Utility Model Content

[0006] The purpose of this invention is to provide a multi-head pressure testing machine to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following solution to the above technical problems: a multi-head pressure testing machine, comprising a base, a placement seat provided at the middle of the top of the base, an arc-shaped groove provided on the top of the placement seat, two sets of multi-head components provided on the top of the base and distributed on both sides of the placement seat, and an adjustment component provided on the top of the base for moving and adjusting one of the sets of multi-head components.

[0008] As a further embodiment of this utility model, the multi-head assembly includes a shaft, a circular block rotatably connected to the side of the shaft, and multiple connecting rods arranged in a ring on the side of the circular block. A clamping plate is fixed to the end of the connecting rod away from the circular block, and the multiple clamping plates are arranged in different sizes. A liquid passage groove is opened inside the connecting rod, and a liquid inlet communicating with the liquid passage groove is opened on the side of the connecting rod. A liquid inlet pipe is internally threaded to the liquid inlet.

[0009] As a further embodiment of this utility model, an end sleeve fitted onto the outside of the shaft is fixed on the side of the base, and a locking bolt is threaded onto the side of the end sleeve. A threaded hole adapted to the thread of the locking bolt is opened at the end of the shaft, and multiple threaded holes are provided, with each threaded hole corresponding to a multiple clamping plate.

[0010] As a further embodiment of this utility model, a rubber plate is attached and fixed to the side of the clamping plate away from the connecting rod.

[0011] As a further embodiment of this utility model, the adjustment component includes a T-shaped groove a formed on the top surface of the base, a support plate is provided on one side of one of the circular blocks and the circular block is rotatably connected to the support plate, a slider that is slidably adapted to the T-shaped groove a is fixed at the bottom end of the support plate, an electric push rod is fixed on the top surface of the base and the output end of the electric push rod is fixed to the support plate, and a fixing plate is provided on one side of the other circular block and fixed to the top surface of the base, and the shaft on the circular block is fixed to the fixing plate.

[0012] As a further embodiment of this utility model, a T-shaped groove b is provided on the top surface of the base, and a bottom support rod that is slidably adapted to the T-shaped groove b is fixed at the bottom end of the placement seat.

[0013] As a further embodiment of this utility model, a handle is fixed on the side of the placement base, and a rubber sleeve is fitted onto the surface of the handle.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] 1. When pressure testing pipe fittings of different specifications and sizes, the different pressure plates can be adjusted to the horizontal position by rotating the adjusting block. Different sizes of pressure plates can be easily switched, making it suitable for sealing different pipe fitting ports. This facilitates pressure testing of different pipe fittings, effectively improving the applicability of the overall device and enhancing its overall practicality.

[0016] 2. When pressure testing different pipe fittings, the placement seat can be pulled directly. Through the cooperation of the T-slot b and the bottom support rod, the placement seat can be pulled out from the top of the base, thereby replacing the placement seat with a different arc groove, which is convenient for bearing and positioning pipe fittings of different specifications and sizes. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a three-dimensional view of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural diagram of the adjustment component of this utility model;

[0020] Figure 3 This is a partial structural diagram of the multi-head component of this utility model. Figure 1 ;

[0021] Figure 4 This is a partial structural diagram of the multi-head component of this utility model. Figure 2 ;

[0022] Figure 5 This is a cross-sectional view of the multi-head component of this utility model;

[0023] Figure 6 This is a partial structural diagram of the threaded hole of this utility model;

[0024] Figure 7 This is a partial structural diagram of the bottom support rod of this utility model.

[0025] The attached diagram lists the components represented by each number as follows:

[0026] 1. Multi-head assembly; 101. End sleeve; 102. Locking bolt; 103. Round block; 104. Pressure plate; 105. Rubber plate; 106. Liquid passage groove; 107. Shaft; 109. Connecting rod; 110. Liquid inlet pipe; 111. Liquid inlet; 112. Threaded hole; 2. Adjustment assembly; 201. Support plate; 202. Slider; 203. Electric push rod; 204. T-slot a; 3. Base; 4. Placement seat; 5. Arc-shaped groove; 6. T-slot b; 7. Bottom support rod; 8. Fixing plate; 9. Handle. Detailed Implementation

[0027] The present invention will be further described below with reference to the embodiments.

[0028] Please see Figure 1-7This utility model provides a multi-head pressure testing machine, including a base 3, a placement seat 4 at the top center of the base 3, an arc-shaped groove 5 on the top of the placement seat 4, two sets of multi-head components 1 on the top of the base 3 and distributed on both sides of the placement seat 4, and an adjustment component 2 on the top of the base 3 for moving and adjusting one of the sets of multi-head components 1; in use, the pipe to be tested is placed into the arc-shaped groove 5 of the placement seat 4, and the placement seat 4 positions and supports the pipe. At this time, the pipe is located between the two sets of multi-head components 1 and the port of the pipe is aligned with the two sets of multi-head components 1. The device is configured such that the adjusting component 2 pushes one of the multi-head components 1, thereby reducing the distance between the two multi-head components 1. This allows the two multi-head components 1 to tightly seal both ends of the pipe fitting. Liquid is then introduced into the pipe fitting, and the hydraulic pressure inside the pipe fitting is gradually increased, thus performing a pressure test on the pipe fitting. When performing pressure tests on pipe fittings of different specifications and sizes, different pipe fitting port clamping components can be switched through the multi-head components 1, making it suitable for sealing different pipe fitting ports. This facilitates pressure testing on different pipe fittings, effectively improving the applicability and overall practicality of the device.

[0029] Further as Figure 1 , Figure 3 , Figure 4 and Figure 5As shown, it is worth noting that the multi-head assembly 1 includes a shaft 107, a circular block 103 rotatably connected to the side of the shaft 107, and multiple connecting rods 109 arranged in a ring on the side of the circular block 103. A clamping plate 104 is fixed to the end of each connecting rod 109 away from the circular block 103. The clamping plates 104 are of different sizes. A liquid passage groove 106 is formed inside the connecting rod 109, and a liquid inlet 111 communicating with the liquid passage groove 106 is formed on the side of the connecting rod 109. 1. An inlet pipe 110 is connected to the internal thread. The pipe to be tested is placed in the arc-shaped groove 5 of the placement seat 4. The placement seat 4 positions and supports the pipe. At this time, the pipe is located between two clamping plates 104 and the ends of the pipe are aligned with the two horizontally positioned clamping plates 104. The adjustment component 2 pushes one of the round blocks 103 to move, thereby reducing the distance between the two clamping plates 104, so that the two horizontally positioned clamping plates 104 tightly press the ends of the pipe. The inlet pipe 110 is connected to an external pressure testing pump. Liquid is delivered through the inlet pipe 110 to the liquid passage tank 106, and then through the liquid passage tank 106 to the inside of the pipe fitting. The hydraulic pressure inside the pipe fitting is gradually increased to perform pressure testing on the pipe fitting. When performing pressure testing on pipe fittings of different specifications and sizes, by first pulling the placement seat 4, the placement seat 4 can be pulled out from the top of the base 3 through the cooperation of the T-shaped groove b6 and the bottom support rod 7, thereby replacing and installing the placement seat 4 with different arc-shaped grooves 5. Then, by rotating the adjustment circle... Block 103 allows for adjustment of different pressure plates 104 to a horizontal position, enabling the switching of different sizes of pressure plates 104 to seal different pipe fitting ports. The inlet 111 has an internal thread, and the outer wall of the end of the inlet pipe 110 has an external thread covered with a sealing thin rubber membrane. By screwing the threaded end of the inlet pipe 110 into different inlets 111, it is convenient to perform pressure testing on different pipe fittings, effectively improving the applicability and overall practicality of the device.

[0030] Further as Figure 3 , Figure 5 and Figure 6 As shown, it is worth noting that an end sleeve 101 is fixed on the side of the base 3 and sleeved on the outside of the shaft 107. A locking bolt 102 is threadedly connected to the side of the end sleeve 101. A threaded hole 112 that matches the thread of the locking bolt 102 is opened at the end of the shaft 107. Multiple threaded holes 112 are provided, and multiple threaded holes 112 are corresponding to multiple pressure plates 104. In actual operation, by rotating the locking bolt 102, the adjusting block 103 can be rotated to switch between different sizes of pressure plates 104.

[0031] Further as Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, it is worth noting that the adjustment assembly 2 includes a T-shaped groove a204 on the top surface of the base 3. One of the circular blocks 103 has a support plate 201 on one side, and the circular block 103 is rotatably connected to the support plate 201. The bottom end of the support plate 201 is fixed with a slider 202 that is slidably adapted to the T-shaped groove a204. An electric push rod 203 is fixed on the top surface of the base 3, and the output end of the electric push rod 203 is fixed to the support plate 201. The other circular block 103 has a fixing plate 8 fixed on the top surface of the base 3 on one side, and the shaft 107 on the circular block 103 is fixed to the fixing plate 8. In specific operation, the electric push rod 203 is started to work, and the output end of the electric push rod 203 pushes the support plate 201 to move and adjust, thereby driving the pressing plate 104 on one of the circular blocks 103 to move closer to the pipe port, so as to achieve the pressing and sealing of the pipe port by the two pressing plates 104.

[0032] Further as Figure 1 As shown, it is worth noting that a T-shaped groove b6 is provided on the top surface of the base 3, and a bottom support rod 7 that slides and adapts to the T-shaped groove b6 is fixed at the bottom end of the placement seat 4. When pressure testing is performed on different pipe fittings, the placement seat 4 can be pulled directly. Through the cooperation of the T-shaped groove b6 and the bottom support rod 7, the placement seat 4 can be pulled out from the top of the base 3, thereby replacing and installing placement seats 4 with different arc-shaped grooves 5, which facilitates the bearing and positioning of pipe fittings of different specifications and sizes.

[0033] This solution has the following working process: During use, the pipe to be tested is placed into the arc-shaped groove 5 of the placement seat 4. The placement seat 4 positions and supports the pipe. At this time, the pipe is positioned between the two clamping plates 104, and the ends of the pipe are aligned with the two horizontally positioned clamping plates 104. The output end of the electric push rod 203 pushes the support plate 201 to move and adjust, pushing one of the circular blocks 103 to move, thereby reducing the distance between the two clamping plates 104. This allows the two horizontally positioned clamping plates 104 to tightly press and seal the ends of the pipe. Liquid pipe 110 delivers liquid into liquid channel 106, and then into the pipe fitting through liquid channel 106, gradually increasing the hydraulic pressure inside the pipe fitting to perform pressure testing. When performing pressure testing on pipe fittings of different specifications and sizes, by rotating locking bolt 102 and rotating adjusting block 103, different pressure plates 104 are adjusted to a horizontal position, and different sizes of pressure plates 104 can be switched to seal different pipe fitting ports. The end thread of liquid inlet pipe 110 is screwed into different liquid inlet ports 111 to perform pressure testing on different pipe fittings.

[0034] Further as Figure 3 , Figure 4 and Figure 5As shown, it is worth noting that a rubber plate 105 is attached and fixed to the side of the clamping plate 104 away from the connecting rod 109. In actual operation, the rubber plate 105 increases the clamping and sealing performance of the clamping plate 104 on the pipe fitting port, ensuring the effectiveness of the pipe fitting pressure test.

[0035] Further as Figure 7 As shown, it is worth noting that a handle 9 is fixed on the side of the placement base 4, and a rubber sleeve is fitted on the surface of the handle 9; in actual operation, the placement base 4 can be easily installed, removed and replaced through the handle 9, which is convenient for operation.

[0036] In summary: When pressure testing pipe fittings of different specifications and sizes, the multi-head assembly 1 allows switching between different pipe fitting port clamping devices, thus enabling sealing of different pipe fitting ports and facilitating pressure testing of various pipe fittings. This effectively improves the applicability and practicality of the overall device. When pressure testing different pipe fittings, the placement seat 4 can be pulled directly. Through the cooperation of the T-groove b6 and the bottom support rod 7, the placement seat 4 can be pulled out from the top of the base 3, thereby allowing the replacement of placement seats 4 with different arc-shaped grooves 5, facilitating the load-bearing positioning of pipe fittings of different specifications and sizes.

[0037] The electric linear actuator 203 can be purchased from the market. The electric linear actuator 203 is equipped with a power supply. It is a mature technology in this field and has been fully disclosed. Therefore, it will not be described again in the specification.

Claims

1. A multi-head pressure testing machine, comprising a base, characterized in that, A placement seat is provided at the top center of the base, and an arc-shaped groove is provided on the top of the placement seat. Two sets of multi-head components are provided on the top of the base and distributed on both sides of the placement seat. An adjustment component is provided on the top of the base to push one of the multi-head components to move and adjust.

2. The multi-head testing machine according to claim 1, characterized in that, The multi-head assembly includes a shaft, a circular block rotatably connected to the side of the shaft, and multiple connecting rods arranged in a ring on the side of the circular block. A pressure plate is fixed to the end of each connecting rod away from the circular block. The multiple pressure plates are of different sizes. A liquid passage groove is opened inside the connecting rod, and a liquid inlet communicating with the liquid passage groove is opened on the side of the connecting rod. A liquid inlet pipe is internally threaded into the liquid inlet.

3. The multi-head testing machine according to claim 2, characterized in that, An end sleeve is fixed on the side of the base and fitted onto the outside of the shaft. A locking bolt is threaded onto the side of the end sleeve. A threaded hole that matches the thread of the locking bolt is opened at the end of the shaft. Multiple threaded holes are provided, and each threaded hole corresponds to a multiple clamping plate.

4. The multi-head testing machine according to claim 2, characterized in that, A rubber plate is attached and fixed to the side of the clamping plate away from the connecting rod.

5. The multi-head testing machine according to claim 4, characterized in that, The adjustment assembly includes a T-shaped groove a on the top surface of the base, a support plate is provided on one side of one of the circular blocks and the circular block is rotatably connected to the support plate, a slider that is slidably adapted to the T-shaped groove a is fixed at the bottom end of the support plate, an electric push rod is fixed on the top surface of the base and the output end of the electric push rod is fixed to the support plate, and a fixing plate is provided on one side of the other circular block and fixed to the top surface of the base, and the shaft on the circular block is fixed to the fixing plate.

6. The multi-head testing machine according to claim 1, characterized in that, A T-shaped groove b is provided on the top surface of the base, and a bottom support rod that slides and adapts to the T-shaped groove b is fixed at the bottom end of the placement seat.

7. The multi-head testing machine according to claim 6, characterized in that, A handle is fixed to the side of the placement base, and a rubber sleeve is fitted onto the surface of the handle.

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