Large stainless steel pipe fitting pressure testing machine

Abstract

The utility model discloses a large stainless steel pipe fitting pressure testing machine, which belongs to the technical field of pipe fitting pressure testing equipment and comprises a workbench, a connecting plate is fixed at the output end of an electric push rod, adjusting assemblies are arranged at two ends of the connecting plate, and a clamping and pressing assembly is arranged in the middle of the connecting plate. A piston plate a and a piston plate b are fixed to the ends, close to the center of the workbench, of the hydraulic push rods, connecting pipes are fixed between the output ends of the hydraulic push rods and the piston plate b, and a water outlet groove is formed in the center of the piston plate b. The two ends of the stainless steel pipe are pressed and limited through the two sets of adjusting assemblies, the stainless steel pipe is horizontally corrected, the stainless steel pipe is horizontally placed, horizontal positioning of the stainless steel pipe is achieved, the precision of horizontal placement of the stainless steel pipe is improved, and the production efficiency is improved. And the clamping and pressing assembly is driven by the connecting plate to press, touch and clamp the middle part of the stainless steel pipe, so that the stainless steel pipe is stably clamped and fixed, and subsequent pressure test detection on the stainless steel pipe is facilitated.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe fitting pressure testing equipment, and in particular to a large stainless steel pipe fitting pressure testing machine. Background Technology

[0002] Stainless steel pipe fittings are pipe connection components made of high-quality stainless steel. They have excellent corrosion resistance, high temperature resistance, and compressive strength. Their smooth inner walls reduce fluid resistance, improve transmission efficiency, and are easy to clean and maintain. During the installation and maintenance of stainless steel water supply pipe fittings, it is often necessary to pressure test the pipeline. Currently, when conducting pressure tests on stainless steel pipe fittings, workers usually plug one end of the stainless steel pipe and inject water into the other end to test the pressure and observe whether there are any leaks.

[0003] For example, Chinese Patent Publication No. CN211122343U discloses a large stainless steel pipe fitting pressure testing machine, which includes a support plate with a groove inside the support plate. Two sliders are slidably connected inside the groove. A first support frame is fixedly connected to the top of one slider. A nut is welded inside the first support frame, and a screw is threaded into the nut. A rubber plug is fixedly connected to the bottom of the screw. In this large stainless steel pipe fitting pressure testing machine, the rubber plug connected to the first support is kept horizontal with the pipe opening. Twisting the nut causes the screw to move the rubber plug into the interior of the steel pipe, thus maintaining a tight seal. Then, the operator twists the valve adjusting wheel to inject water into the steel pipe of the inlet pipe box, thereby performing a pressure test on the steel pipe.

[0004] The above application still has shortcomings. In the above application, the stainless steel tube is placed inside the collar, and the stainless steel tube is locked and limited by the locking device. Then, the end of the stainless steel tube is sealed by the rubber plug driven by the screw. In this process, it is difficult to ensure that the stainless steel tube is horizontal after locking. The end of the stainless steel tube is prone to misalignment with the rubber plug, which can easily lead to wear of the rubber plug sealing part, affecting the sealing effect of the steel tube during pressure test and affecting the reliability of the test results.

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

[0006] The purpose of this utility model is to provide a large stainless steel 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 large stainless steel pipe fitting testing machine includes a workbench, a support plate fixed on the top surface of the workbench, an electric push rod fixed on the top of the support plate, a connecting plate fixed on the output end of the electric push rod, adjustment components at both ends of the connecting plate, a clamping component in the middle of the connecting plate, two hydraulic push rods fixed on the top surface of the workbench, the two hydraulic push rods symmetrically distributed at both ends of the workbench, a piston plate a and a piston plate b fixed on the end of the hydraulic push rod near the center of the workbench respectively, a connecting pipe fixed between the output end of the hydraulic push rod and the piston plate b, a water outlet groove communicating with the inside of the connecting pipe being opened at the center of the piston plate b, and an inlet pipe communicating with the inside of the connecting pipe being fixed on the outer wall of the connecting pipe.

[0008] As a further embodiment of this utility model, the adjusting component includes an outer sleeve fixed to the bottom surface of the connecting plate and located at the end of the connecting plate, a pressure rod slidably connected inside the outer sleeve, a base fixed to the top surface of the workbench, and an arc-shaped support plate located directly below the pressure rod fixed to the top of the base.

[0009] As a further embodiment of this utility model, a spring is provided inside the outer sleeve, and the two ends of the spring are respectively fixed to the top end of the pressure rod and the bottom surface of the connecting plate.

[0010] As a further embodiment of this utility model, a protruding post is fixed on the top of the pressure rod, and a sliding groove that is adapted to slide with the protruding post is provided on the side of the outer sleeve.

[0011] As a further embodiment of this utility model, the bottom end of the pressure rod is provided with an arc-shaped end.

[0012] As a further embodiment of this utility model, the clamping assembly includes a connecting rod fixed to the bottom surface of the connecting plate, the connecting rod being located at the center of the connecting plate, a pressure plate a fixed to the bottom end of the connecting rod, a support fixed to the top surface of the workbench, and a pressure plate b fixed to the top end of the support, located directly below the pressure plate a.

[0013] As a further embodiment of this utility model, the bottom end of the pressure plate a is provided with an arc surface, and rubber pads are attached and fixed to the bottom surface of the arc surface and the top surface of the pressure plate b. Multiple support rods are fixed on the bottom surface of the workbench in a symmetrical distribution.

[0014] Compared with the prior art, the beneficial effects of this utility model are as follows: The output end of the electric push rod drives the connecting plate to move downward, thereby driving the two sets of adjusting components to press against both ends of the stainless steel tube placed on the top of the workbench. The two sets of adjusting components first press and limit the two ends of the stainless steel tube, thereby correcting the stainless steel tube to a horizontal position and improving the accuracy of the horizontal placement of the stainless steel tube. This ensures that the two ends of the stainless steel tube are horizontally aligned with piston plate a and piston plate b, greatly reducing the deviation between piston plate a or piston plate b and the ends of the stainless steel tube, reducing the wear of the rubber sealing parts, stabilizing the sealing effect of the steel tube during pressure testing, and improving the reliability of the test results. After the stainless steel tube is horizontally positioned, the connecting plate drives the clamping components to press and clamp the middle part of the stainless steel tube, stabilizing and securing the stainless steel tube for subsequent pressure testing. Attached Figure Description

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

[0016] Figure 1 The overall three-dimensional structure of this utility model Figure 1 ;

[0017] Figure 2 The overall three-dimensional structure of this utility model Figure 2 ;

[0018] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0019] Figure 4 This is a cross-sectional view of the setting component of this utility model;

[0020] Figure 5 This is a partial structural diagram of the clamping assembly of this utility model;

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

[0022] The attached diagram lists the components represented by each number as follows:

[0023] 1. Adjustment assembly; 101. Outer sleeve; 102. Pressure rod; 103. Arc end; 104. Slide groove; 105. Spring; 106. Protruding column; 107. Base; 108. Arc-shaped support plate; 2. Clamping assembly; 201. Connecting rod; 202. Pressure plate a; 203. Rubber pad; 204. Arc surface; 205. Pressure plate b; 206. Support; 3. Workbench; 4. Support leg rod; 5. Hydraulic push rod; 6. Piston plate a; 7. Connecting pipe; 8. Piston plate b; 9. Liquid inlet pipe; 10. Water outlet tank; 11. Electric push rod; 12. Connecting plate; 13. Support plate. Detailed Implementation

[0024] The present invention will be further described below with reference to the embodiments.

[0025] Please see Figure 1-6This utility model provides a large stainless steel pipe fitting testing machine, including a workbench 3. A support plate 13 is fixed on the top surface of the workbench 3. An electric push rod 11 is fixed on the top of the support plate 13. A connecting plate 12 is fixed on the output end of the electric push rod 11. Adjustment components 1 are provided at both ends of the connecting plate 12. A clamping component 2 is provided in the middle of the connecting plate 12. Two hydraulic push rods 5 are fixed on the top surface of the workbench 3. The two hydraulic push rods 5 are symmetrically distributed at both ends of the workbench 3. A piston plate a6 and a piston plate b8 are respectively fixed on the end of the hydraulic push rod 5 near the center of the workbench 3. A connecting pipe 7 is fixed between the output end and the piston plate b8. A water outlet groove 10 communicating with the inside of the connecting pipe 7 is opened at the center of the piston plate b8. An inlet pipe 9 communicating with the inside of the connecting pipe 7 is fixed on the outer wall of the connecting pipe 7. In use, a large stainless steel pipe is placed on the top of the workbench 3, and the stainless steel pipe is supported by the adjustment component 1 and the clamping component 2. The electric push rod 11 is started to work. The output end of the electric push rod 11 drives the connecting plate 12 to move down, thereby driving the two sets of adjustment components 1 to first contact the two ends of the stainless steel pipe placed on the top of the workbench 3. The stainless steel tube is first pressed and limited at both ends by two sets of adjusting components 1, and then horizontally corrected to ensure its horizontal placement. This improves the accuracy of the horizontal placement and aligns the two ends of the stainless steel tube with piston plates a6 and b8, significantly reducing the deviation between piston plates a6 or b8 and the ends of the stainless steel tube. After the stainless steel tube is horizontally positioned, the connecting plate 12 drives the clamping component 2 to press and clamp the middle part of the stainless steel tube, stabilizing and securing it for subsequent processing. A pressure test is performed, and then the two hydraulic push rods 5 are activated. The output ends of the hydraulic push rods 5 drive the piston plates a6 and b8 to extend into the ports of the stainless steel pipe. The cylindrical sides of the piston plates a6 and b8 press against the inner wall of the stainless steel pipe, thereby sealing the two ends of the stainless steel pipe. The inlet pipe 9 is connected to an external water pump, and water is transported to the inside of the stainless steel pipe through the connecting pipe 7 and the outlet tank 10, so that the inside of the stainless steel pipe has a certain hydraulic pressure, thereby performing a pressure test on the stainless steel pipe to check whether there are any leaks on the inner wall of the steel pipe.

[0026] Further as Figure 2 , Figure 4 and Figure 5As shown, it is worth noting that the adjusting component 1 includes an outer sleeve 101 fixed to the bottom surface of the connecting plate 12 and located at the end of the connecting plate 12. A pressure rod 102 is slidably connected inside the outer sleeve 101. A base 107 is fixed on the top surface of the workbench 3, and an arc-shaped support plate 108 located directly below the pressure rod 102 is fixed on the top of the base 107. In actual operation, the stainless steel pipe is placed on the top side of the arc-shaped support plate 108, and the stainless steel pipe is stably supported by the two arc-shaped support plates 108. The output end of the electric push rod 11 drives the... The movable connecting plate 12 moves downward, thereby driving the two pressure rods 102 to press against both ends of the stainless steel tube. The pressure rods 102 can be retracted into the outer sleeve 101, thereby achieving the two pressure rods 102 pressing against and limiting both ends of the stainless steel tube, and horizontally positioning the stainless steel tube, so that the stainless steel tube is placed horizontally, improving the accuracy of the horizontal placement of the stainless steel tube, and making the two ends of the stainless steel tube horizontally aligned with the piston plate a6 and piston plate b8, greatly reducing the deviation between the piston plate a6 or piston plate b8 and the ends of the stainless steel tube.

[0027] Further as Figure 4 and Figure 6 As shown, it is worth noting that a spring 105 is installed inside the outer sleeve 101. The two ends of the spring 105 are fixed to the top of the pressure rod 102 and the bottom of the connecting plate 12, respectively. During operation, as the connecting plate 12 moves downward, the spring 105 is compressed. The spring 105 pushes the pressure rod 102 in the opposite direction, so that the bottom end of the pressure rod 102 always presses against the surface of the stainless steel tube. The two pressure rods 102 are used to horizontally position the stainless steel tube. At the same time, the spring 105 allows the pressure rod 102 to automatically extend out of the outer sleeve 101 and return to its original position.

[0028] Further as Figure 6 As shown, it is worth noting that a protruding post 106 is fixed on the top of the pressure rod 102, and a sliding groove 104 is provided on the side of the outer sleeve 101 to slide and adapt to the protruding post 106. In actual operation, the protruding post 106 and the sliding groove 104 cooperate to guide and limit the telescopic movement of the pressure rod 102 in the outer sleeve 101.

[0029] Further as Figure 4 and Figure 5 As shown, it is worth noting that the bottom end of the pressure rod 102 is provided with an arc-shaped end 103. In actual operation, the arc-shaped end 103 reduces the wear when the bottom end of the pressure rod 102 contacts the surface of the stainless steel tube, thus extending the service life of the components.

[0030] Further as Figure 1 , Figure 2 and Figure 4As shown, it is worth noting that the clamping assembly 2 includes a connecting rod 201 fixed to the bottom surface of the connecting plate 12. The connecting rod 201 is located at the center of the connecting plate 12. A pressure plate a202 is fixed to the bottom end of the connecting rod 201. A support 206 is fixed to the top surface of the workbench 3. A pressure plate b205 located directly below the pressure plate a202 is fixed to the top of the support 206. The stainless steel tube is placed on the top surface of the pressure plate b205. After the stainless steel tube is horizontally positioned, the connecting plate 12 drives the pressure plate a202 to contact the middle part of the stainless steel tube, thereby stably clamping the stainless steel tube through the pressure plate a202 and the pressure plate b205, which facilitates subsequent pressure testing of the stainless steel tube.

[0031] This solution includes the following working process: A stainless steel pipe is placed on the top side of the arc-shaped support plate 108 and pressure plate b205. The two arc-shaped support plates 108 and pressure plate b205 provide stable support for the stainless steel pipe. The electric push rod 11 is activated, and its output end drives the connecting plate 12 to move downwards. This causes the connecting plate 12 to drive the two pressure rods 102 to press against both ends of the stainless steel pipe. The pressure rods 102 can elastically retract into the outer sleeve 101, thus achieving pressure and limiting of both ends of the stainless steel pipe, horizontally positioning the stainless steel pipe. After the stainless steel pipe is horizontally positioned, the connecting plate 12 drives the pressure plate b202 to press against the stainless steel pipe... The middle part of the surface is in contact, thereby stabilizing and clamping the stainless steel pipe by pressure plate a202 and pressure plate b205. At this time, the two ends of the stainless steel pipe are aligned with piston plate a6 and piston plate b8 respectively. The output end of hydraulic push rod 5 drives piston plate a6 and piston plate b8 to extend into the two ends of the stainless steel pipe. The column side of piston plate a6 and piston plate b8 is in close contact with the inner wall of the stainless steel pipe, thereby sealing the two ends of the stainless steel pipe by piston plate a6 and piston plate b8. Water is transported into the interior of the stainless steel pipe through inlet pipe 9, connecting pipe 7 and water outlet tank 10, so that the interior of the stainless steel pipe has a certain hydraulic pressure, thereby performing a pressure test on the stainless steel pipe to check whether there are any leaks on the inner wall of the stainless steel pipe.

[0032] Further as Figure 4 and Figure 5 As shown, it is worth noting that the bottom end of the pressure plate a202 is provided with an arc surface 204. Rubber pads 203 are attached and fixed to the bottom surface of the arc surface 204 and the top surface of the pressure plate b205. Multiple support rods 4 are fixed on the bottom surface of the workbench 3 in a symmetrical distribution. In actual operation, the rubber pads 203 increase the frictional force between the pressure plate a202 and the pressure plate b205 on the stainless steel tube, further improving the clamping stability of the stainless steel tube while avoiding damage to the surface of the stainless steel tube.

[0033] In summary: By first pressing and limiting both ends of the stainless steel tube with two sets of adjusting components 1, the stainless steel tube is horizontally corrected and placed horizontally, thus achieving horizontal positioning of the stainless steel tube and improving the accuracy of horizontal placement. This ensures that the two ends of the stainless steel tube are horizontally aligned with piston plates a6 and b8, greatly reducing the deviation between piston plates a6 or b8 and the ends of the stainless steel tube. After the stainless steel tube is horizontally positioned, the connecting plate 12 drives the clamping component 2 to press and clamp the middle part of the stainless steel tube, stabilizing and securing the stainless steel tube for subsequent pressure testing.

[0034] The hydraulic actuator 5 and the electric actuator 11 can be purchased from the market. The hydraulic actuator 5 and the electric actuator 11 are equipped with power supplies. They are mature technologies in the field and have been fully disclosed. Therefore, they will not be described again in the specification.

Claims

1. A large-scale stainless steel pipe testing machine comprising a worktable, characterized by, A support plate is fixed on the top surface of the workbench. An electric push rod is fixed on the top of the support plate. A connecting plate is fixed on the output end of the electric push rod. Adjustment components are provided at both ends of the connecting plate. A clamping component is provided in the middle of the connecting plate. Two hydraulic push rods are fixed on the top surface of the workbench. The two hydraulic push rods are symmetrically distributed at both ends of the workbench. A piston plate a and a piston plate b are fixed on the end of the hydraulic push rod near the center of the workbench, respectively. A connecting pipe is fixed between the output end of the hydraulic push rod and the piston plate b. A water outlet groove communicating with the inside of the connecting pipe is opened at the center of the piston plate b. An inlet pipe communicating with the inside of the connecting pipe is fixed on the outer wall of the connecting pipe.

2. The large-scale stainless steel pipe testing machine according to claim 1, wherein The adjustment assembly includes an outer sleeve fixed to the bottom surface of the connecting plate and located at the end of the connecting plate. A pressure rod is slidably connected inside the outer sleeve. A base is fixed on the top surface of the workbench. An arc-shaped support plate located directly below the pressure rod is fixed on the top of the base.

3. The large-scale stainless steel pipe testing machine according to claim 2, wherein The outer sleeve is equipped with a spring, and the two ends of the spring are fixed to the top of the pressure rod and the bottom of the connecting plate, respectively.

4. The large-scale stainless steel pipe testing machine according to claim 3, wherein A protruding post is fixed to the top of the pressure rod, and a sliding groove is provided on the side of the outer sleeve to slide and adapt to the protruding post.

5. The large-scale stainless steel pipe testing machine according to claim 2, wherein The bottom end of the pressure rod is provided with an arc-shaped end.

6. The large-scale stainless steel pipe testing machine according to claim 2, wherein The clamping assembly includes a connecting rod fixed to the bottom surface of the connecting plate, the connecting rod being located at the center of the connecting plate, a pressure plate a fixed to the bottom end of the connecting rod, a support fixed to the top surface of the workbench, and a pressure plate b fixed to the top end of the support, located directly below the pressure plate a.

7. The large stainless steel pipe fitting testing machine according to claim 6, characterized in that, The bottom end of the pressure plate a is provided with an arc surface, and rubber pads are attached and fixed to the bottom surface of the arc surface and the top surface of the pressure plate b. Multiple support legs are fixed on the bottom surface of the workbench in a symmetrical distribution.

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