Multi-station pipe pressure testing machine

Abstract

The utility model discloses a kind of multi-station pipe test press, belong to pressure test detection technical field, including base, the output end of hydraulic cylinder is fixed with connecting plate, connecting plate is fixed with connecting rod on the side surface close to base center, the end of connecting rod away from connecting plate is fixed with end pressing plate, the top side surface middle of base is fixed with seat plate, the top of seat plate is provided with clamping component, and the one end of clamping component is provided with pressure adjustment component;The utility model is fixed with multiple pipes by the cooperation of the pressure adjustment component and clamping component for synchronous clamping, the position of pipe is positioned simultaneously, so that the two ends of pipe are aligned with the center of end pressing plate, to realize the synchronous clamping positioning of multiple pipes, facilitate pressure test detection to pipe, effectively improve the overall pressure test detection efficiency of multiple pipes, save manpower to clamp and adjust one by one to multiple pipes, save manpower, effectively reduce the workload of worker.

Description

Technical Field

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

[0002] Pipe pressure testing is a crucial process for verifying the strength and sealing performance of pipelines, primarily ensuring their safe and reliable operation during installation and use. During testing, liquid (usually water) or gas is injected into the pipe fitting using pressure testing equipment, pressurized to a specified value, maintained for a period of time, and the pressure is observed to detect any pressure drop or leakage. This method effectively identifies manufacturing defects, welding problems, or installation errors in pipe fittings, thereby preventing safety accidents such as leaks and bursts caused by fitting failure.

[0003] For example, Chinese Patent Publication No. CN201740705U discloses a pipe fitting pressure testing device for performing water pressure or air tightness tests on pipe fittings. The device includes a rigid inner ring disposed within the pipe fitting, and a locking flange disposed on the outer ring of the pipe fitting. The rigid inner ring and the locking flange together clamp and fix the pipe fitting. It also includes a flange cover disposed at the end of the pipe fitting and fixedly connected to the locking flange. A sealing gasket is provided between the flange cover and the end of the pipe fitting. This invention, through the above structural design, is applicable to pressure testing of pipe fittings of different lengths, greatly improving the applicability of the testing equipment.

[0004] However, existing pipe fitting pressure testing equipment typically only allows for pressure testing of a single pipe fitting at a time. Multiple pipe fittings need to be clamped and positioned repeatedly before pressure testing, which is cumbersome and time-consuming, affecting overall testing efficiency and increasing the workload and labor intensity of operators.

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

[0006] The purpose of this invention is to provide a multi-station pipe fitting 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 aforementioned technical problems: A multi-station pipe fitting pressure testing machine includes a base. Two hydraulic cylinders are fixed on the top of the base and are symmetrically distributed at both ends of the base. A connecting plate is fixed on the output end of each hydraulic cylinder. Multiple connecting rods are fixed on the side of the connecting plate near the center of the base and are distributed at equal intervals. An end pressure plate is fixed on the end of each connecting rod away from the connecting plate. A seat plate is fixed in the middle of the top side of the base. A clamping assembly is provided on the top of the seat plate, and a pressure adjustment assembly is provided at one end of the clamping assembly.

[0008] As a further embodiment of this utility model, the clamping assembly includes a protrusion fixed to the top side of the base plate. Multiple protrusions are provided and are equidistantly distributed. A placement groove is provided between two adjacent protrusions, and the placement groove is aligned with the end pressure plate. A liquid cavity is opened inside each protrusion. A connecting cylinder is fixed to the side of each of the protrusions. One end of the connecting cylinder located inside the protrusion has an opening communicating with the liquid cavity. A connecting rod is inserted inside the connecting cylinder. One end of the connecting rod is fixed with a clamping plate located inside the placement groove. The other end of the connecting rod is fixed with a piston plate a that fits tightly against the inner wall of the connecting cylinder. A connecting pipe connects two adjacent liquid cavities.

[0009] As a further embodiment of this utility model, a spring is provided inside the connecting cylinder on the side of the piston plate a away from the connecting rod, and the two ends of the spring are fixed to the side of the piston plate a and the inner wall of the connecting cylinder, respectively.

[0010] As a further embodiment of this utility model, the pressure regulating assembly includes an end sleeve fixed to the outer wall of one of the bosses and communicating with the liquid cavity. A nut sleeve is fixed inside the end of the end sleeve away from the boss. A threaded rod is threadedly connected inside the nut sleeve. A piston plate b is fixed on one end of the threaded rod and fits tightly against the inner wall of the end sleeve.

[0011] As a further embodiment of this utility model, a rubber pad a is attached and fixed to the side of the clamping plate away from the connecting rod, and a rubber pad b is attached and fixed to the side of the end pressure plate away from the connecting rod.

[0012] As a further embodiment of this utility model, a handle rod is fixed to one end of the threaded rod located outside the end fitting cylinder, and a rubber sleeve is fitted onto the surface of the handle rod.

[0013] As a further embodiment of this utility model, the connecting rod has an infusion groove through which the end pressure plate is passed, and an inlet pipe communicating with the infusion groove is fixed on the side of the connecting rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: by using the pressure adjustment component and the clamping component to simultaneously clamp and fix multiple pipe fittings, and simultaneously positioning the pipe fittings so that the two ends of the pipe fittings are aligned with the center of the end pressure plate, multiple pipe fittings can be clamped and positioned simultaneously, which facilitates pressure testing of the pipe fittings, effectively improves the overall pressure testing efficiency of multiple pipe fittings, eliminates the need for manual clamping and adjustment of multiple pipe fittings one by one, saves manpower, and effectively reduces the workload of workers. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0016] Figure 1 This is a perspective view of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the overall front view of the present invention;

[0018] Figure 3 This is a front view of the clamping assembly of this utility model.

[0019] Figure 4 This is a partial structural diagram of the clamping component of this utility model;

[0020] Figure 5 This is a cross-sectional view of the clamping assembly and the pressure adjustment assembly of this utility model;

[0021] Figure 6 for Figure 5 Enlarged view of the structure at point A in the middle;

[0022] Figure 7 This is a partial structural diagram of the infusion tank of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Clamping assembly; 101. Connecting cylinder; 102. Piston plate a; 103. Spring; 104. Through port; 105. Connecting rod; 106. Clamping plate; 107. Rubber pad a; 108. Liquid chamber; 109. Thrust; 110. Placement slot; 111. Connecting pipe; 2. Pressure regulating assembly; 201. End connecting cylinder; 202. Piston plate b; 203. Threaded rod; 204. Nut sleeve; 205. Handle rod; 3. Seat plate; 4. Base; 5. Hydraulic cylinder; 6. Connecting plate; 7. Liquid inlet pipe; 8. End pressure plate; 9. Connecting rod; 10. Rubber pad b; 11. Infusion tank. Detailed Implementation

[0025] The present invention will be further described below with reference to the embodiments.

[0026] Please see Figure 1-7This utility model provides a multi-station pipe fitting pressure testing machine, including a base 4. Two hydraulic cylinders 5 are fixed on the top of the base 4 and are symmetrically distributed at both ends of the base 4. A connecting plate 6 is fixed on the output end of the hydraulic cylinders 5. Multiple connecting rods 9 are fixed on the side of the connecting plate 6 near the center of the base 4, and an end pressure plate 8 is fixed on the end of the connecting rod 9 away from the connecting plate 6. A seat plate 3 is fixed in the middle of the top side of the base 4. A clamping assembly 1 is provided on the top of the seat plate 3, and a pressure adjustment assembly 2 is provided at one end of the clamping assembly 1. In use, multiple pipe fittings to be tested are placed separately in multiple stations on the top of the seat plate 3, and the multiple pipe fittings are synchronously clamped and fixed by the cooperation of the pressure adjustment assembly 2 and the clamping assembly 1. Simultaneously, the pipe fittings are positioned so that both ends of the fittings are aligned with the center of the end pressure plates 8, thereby achieving synchronous clamping and positioning of multiple pipe fittings. This facilitates pressure testing of the fittings, effectively improving the overall pressure testing efficiency of multiple pipe fittings and eliminating the need for manual clamping and adjustment of each fitting individually, saving manpower and effectively reducing the workload of workers. After the fittings are positioned and clamped, two hydraulic cylinders 5 are activated. The output ends of the hydraulic cylinders 5 drive the connecting plate 6 to move, thereby causing multiple end pressure plates 8 to press against the two ends of the fittings, sealing the two ends of the fittings. Then, water with a certain hydraulic pressure is introduced into the fittings, creating a certain hydraulic pressure inside the fittings for pressure testing.

[0027] Further as Figure 1 , Figure 4 , Figure 5 and Figure 6As shown, it is worth noting that the clamping assembly 1 includes a protrusion 109 fixed to the top side of the base plate 3. Multiple protrusions 109 are provided and are equidistantly distributed. A placement groove 110 is provided between adjacent protrusions 109, and the placement groove 110 is aligned with the end pressure plate 8. A liquid cavity 108 is formed inside the protrusion 109. A connecting cylinder 101 is fixed to the side of each of the protrusions 109. One end of the connecting cylinder 101 inside the protrusion 109 has a through-hole 104 communicating with the liquid cavity 108. A connecting rod 105 is inserted inside the connecting cylinder 101. One end of the connecting rod 105 is fixed with a clamping plate 106 located inside the placement groove 110, and the other end of the connecting rod 105 is fixed with a piston plate a102 that fits tightly against the inner wall of the connecting cylinder 101. A connecting pipe 111 connects adjacent liquid cavities 108. During operation, multiple pipe fittings to be tested are placed separately into multiple placement slots 110. Multiple bosses 109 are hydraulically pressurized, which drives the piston plate a102 to move within the connecting cylinder 101. The piston plate a102, via the connecting rod 105, moves the clamping plate 106 closer to the pipe fitting. This clamps the pipe fittings in place, positioning them in the middle of the placement slot 110, aligning both ends of the pipe fitting with the center of the end pressure plate 8. This allows for simultaneous clamping and positioning of multiple pipe fittings, facilitating pressure testing. It also allows for fixing and positioning pipe fittings of different sizes, effectively improving the overall pressure testing efficiency of multiple pipe fittings. This eliminates the need for manual clamping and adjustment of each pipe fitting individually, saving manpower and reducing the workload of workers.

[0028] Further as Figure 5 and Figure 6 As shown, it is worth noting that the connecting cylinder 101 is equipped with a spring 103 located on the side of the piston plate a102 away from the connecting rod 105. The two ends of the spring 103 are fixed to the side of the piston plate a102 and the inner wall of the connecting cylinder 101, respectively. In actual operation, when the hydraulic pressure inside the boss 109 is removed, the spring 103 returns to its original length. The spring 103 pulls the piston plate a102 back to its original position inside the connecting cylinder 101, that is, the two clamping plates 106 are adjusted to move away from each other, so that the clamping plates 106 are reset, which facilitates the clamping and fixing of pipe fittings of different specifications and sizes.

[0029] Further as Figure 3 , Figure 4 and Figure 5As shown, it is worth noting that the pressure regulating assembly 2 includes an end sleeve 201 fixed to the outer wall of one of the bosses 109 and communicating with the liquid chamber 108. A nut sleeve 204 is fixed inside the end of the end sleeve 201 away from the boss 109. A threaded rod 203 is threadedly connected inside the nut sleeve 204. A piston plate b202 that fits tightly against the inner wall of the end sleeve 201 is fixed to one end of the threaded rod 203. The end sleeve 201 and the liquid chamber 108 are filled with a certain amount of liquid, which can be water or liquid liquid. In specific operations, such as oil pressure, the threaded rod 203 is rotated, which drives the piston plate b202 to move out of the end-connecting cylinder 201. The piston plate b202 forces some of the liquid in the end-connecting cylinder 201 into the liquid chamber 108 of one of the protrusions 109. The liquid is then simultaneously transported to the interior of multiple protrusions 109 through multiple connecting pipes 111, so that the interior of multiple protrusions 109 is simultaneously hydraulically pressurized. This hydraulic pressure then drives multiple clamping plates 106 to simultaneously clamp and position multiple pipe fittings.

[0030] Further as Figure 4 and Figure 6 As shown, it is worth noting that a rubber pad a107 is attached and fixed to the side of the clamping plate 106 away from the connecting rod 105, and a rubber pad b10 is attached and fixed to the side of the end pressure plate 8 away from the connecting rod 9. In actual operation, the rubber pad a107 increases the friction of the clamping plate 106 in clamping the pipe fitting, thereby improving the stability of clamping the pipe fitting.

[0031] This solution has the following working process: Multiple pipe fittings to be tested are placed separately into multiple placement slots 110. By rotating the threaded rod 203, the threaded rod 203 drives the piston plate b202 to move within the end-connecting cylinder 201. The piston plate b202 forces some of the liquid in the end-connecting cylinder 201 into the liquid chamber 108 of one of the protrusions 109. The liquid is then simultaneously transported to the interior of the multiple protrusions 109 through multiple connecting pipes 111, so that the interior of the multiple protrusions 109 is simultaneously hydraulically pressurized. This hydraulic pressure drives the piston plate a102 to move within the connecting cylinder 101. The piston plate a102 drives the clamping plate 106 to move towards the pipe fitting through the connecting rod 105. This causes the two clamping plates 106 in the placement slot 110 to clamp and fix the pipe fitting, thus fixing and positioning multiple pipe fittings in the middle of the placement slot 110. This ensures that the two ends of the pipe fittings are aligned with the center of the end pressure plate 8, facilitating pressure testing of the pipe fittings.

[0032] Further as Figure 5 As shown, it is worth noting that a handle rod 205 is fixed on one end of the threaded rod 203 located outside the end sleeve 201, and a rubber sleeve is fitted on the surface of the handle rod 205; in actual operation, the threaded rod 203 can be easily rotated by the handle rod 205, which facilitates operation.

[0033] Further as Figure 7 As shown, it is worth noting that the connecting rod 9 has an infusion tank 11 that passes through the end pressure plate 8 inside, and an inlet pipe 7 that communicates with the infusion tank 11 is fixed on the side of the connecting rod 9. In actual operation, the inlet pipe 7 is connected to a pressure testing pump, and water is input into the infusion tank 11 through the inlet pipe 7 and delivered to the inside of the pipe fitting through the infusion tank 11, so that the inside of the pipe fitting has hydraulic pressure, and the side wall of the pipe fitting is checked for cracks and leaks, thereby performing pressure testing on the pipe fitting.

[0034] In summary: By using the pressure regulating component 2 and the clamping component 1 together, multiple pipe fittings are simultaneously clamped and fixed, and the positions of the pipe fittings are positioned so that both ends of the pipe fittings are aligned with the center of the end pressure plate 8. This achieves simultaneous clamping and positioning of multiple pipe fittings, facilitating pressure testing of the pipe fittings, effectively improving the overall pressure testing efficiency of multiple pipe fittings, eliminating the need for manual clamping and adjustment of multiple pipe fittings one by one, saving manpower, and effectively reducing the workload of workers.

[0035] The hydraulic cylinder 5 can be purchased from the market. The hydraulic cylinder 5 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-station pipe fitting pressure testing machine, comprising a base, characterized in that, Two hydraulic cylinders are fixed on the top of the base and are symmetrically distributed at both ends of the base. A connecting plate is fixed on the output end of the hydraulic cylinder. Multiple connecting rods are fixed on the side of the connecting plate near the center of the base. An end pressure plate is fixed on the end of the connecting rod away from the connecting plate. A seat plate is fixed in the middle of the top side of the base. A clamping assembly is provided on the top of the seat plate. A pressure adjustment assembly is provided at one end of the clamping assembly.

2. The multi-station pipe fitting testing machine according to claim 1, characterized in that, The clamping assembly includes a protrusion fixed to the top side of the base plate. Multiple protrusions are provided and are equidistantly distributed. A placement groove is provided between two adjacent protrusions and is aligned with the end pressure plate. A liquid cavity is opened inside the protrusion. A connecting cylinder is fixed to the side of each of the protrusions. A through-hole communicating with the liquid cavity is opened at one end of the connecting cylinder located inside the protrusion. A connecting rod is inserted inside the connecting cylinder. A clamping plate located inside the placement groove is fixed at one end of the connecting rod. A piston plate a is fixed at the other end of the connecting rod and fits tightly against the inner side wall of the connecting cylinder. A connecting pipe connects two adjacent liquid cavities.

3. The multi-station pipe fitting pressure testing machine according to claim 2, characterized in that, The connecting cylinder has a spring located on the side of the piston plate a away from the connecting rod. The two ends of the spring are fixed to the side of the piston plate a and the inner wall of the connecting cylinder, respectively.

4. The multi-station pipe fitting testing machine according to claim 2, characterized in that, The pressure regulating assembly includes an end sleeve fixed to the outer wall of one of the bosses and communicating with the liquid cavity. A nut sleeve is fixed inside the end of the end sleeve away from the boss. A threaded rod is threadedly connected inside the nut sleeve. A piston plate b is fixed to one end of the threaded rod and fits tightly against the inner wall of the end sleeve.

5. The multi-station pipe fitting pressure testing machine according to claim 4, characterized in that, A rubber pad a is fixedly attached to the side of the clamping plate away from the connecting rod, and a rubber pad b is fixedly attached to the side of the end pressure plate away from the connecting rod.

6. The multi-station pipe fitting testing machine according to claim 4, characterized in that, A handle is fixed to one end of the threaded rod located outside the end fitting cylinder, and a rubber sleeve is fitted onto the surface of the handle.

7. The multi-station pipe fitting testing machine according to claim 1, characterized in that, The connecting rod has an infusion tank with a through end pressure plate inside, and an inlet pipe connected to the infusion tank is fixed on the side of the connecting rod.

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