Pressure-resistant performance testing equipment for stainless steel pipe fitting production

Abstract

The invention belongs to the technical field of pipe fitting testing, and provides stainless steel pipe fitting production pressure resistance testing equipment which comprises a detection table, a detection tank is mounted on the detection table, a placement frame is fixedly connected to the interior of the detection tank, a placement seat is fixedly connected to the top of the placement frame, the placement seat is used for placing a stainless steel pipe fitting, and the stainless steel pipe fitting is placed in the placement seat. And the side surface of the detection tank is communicated with a water surface detector. By arranging the water surface detector, when the stainless steel pipe leaks or deforms, water in the detection tank can enter the water surface detector, the liquid level height in the water surface detector is increased, and whether the stainless steel pipe leaks or deforms or not can be judged by detecting or observing the liquid level height in the water surface detector; due to the fact that the size of the water surface detector is small, even if deformation or leakage of the stainless steel pipe fitting is small, the water surface detector can obviously observe or detect the deformation or the leakage, and therefore the detection result is more accurate.

Description

Technical Field

[0001] The present invention belongs to the technical field of pipe fitting testing, and particularly relates to a pressure resistance performance testing device for the production of stainless steel pipe fittings. Background Art

[0002] Pipe fittings are a general term for components in a pipeline system that play roles such as connection, control, direction change, flow diversion, sealing, and support. Common pipe fittings include water supply pipes, drain pipes, gas pipes, heating pipes, electrical conduits, rainwater pipes, etc. According to the different manufacturing materials, pipe fittings can also be divided into plastic pipes and metal pipes.

[0003] Stainless steel pipe fittings are a type of metal pipe fittings, which are made of stainless steel material and have wide applications in various pipeline construction and installations. Usually, after the production of stainless steel, in order to ensure whether it meets the usage requirements, it is necessary to conduct a pressure resistance performance test on it to understand the compressive capacity of the pipe fittings and ensure that the pipe fittings leaving the factory reach the required compressive value.

[0004] A pipe fitting pressure resistance and burst testing machine is a testing device used for the long-term pressure resistance and instantaneous burst tests of plastic pipe fittings and metal pipe fittings. During the test, the pipe fitting pressure resistance and burst testing machine injects gas or liquid into the interior of the pipe fittings to check the pressure resistance degree of the pipe fittings; during the test process, it is usually necessary to observe the changes of the pipe fittings during the pressurization process, such as whether abnormal phenomena such as leakage or deformation occur. Most of the traditional observation methods are visual inspections to check for leakage or deformation. However, when the leakage is less or the deformed part is small, the naked eye cannot directly observe it, which may lead to inaccurate test results. Summary of the Invention

[0005] The purpose of the present invention is to provide a pressure resistance performance testing device for the production of stainless steel pipe fittings, aiming to solve the technical problem of inaccurate test results caused by visual inspection in the prior art.

[0006] The present invention is implemented as follows. A pressure resistance testing device for the production of stainless steel pipe fittings includes a detection table, on which a detection tank is installed. Inside the detection tank, a placement rack is fixedly connected, and on the top of the placement rack, a placement seat is fixedly connected. The placement seat is used to place the stainless steel pipe fittings. A water level detector is connected to the side of the detection tank. The water level detector includes a connecting pipe and a measuring pipe. One end of the connecting pipe is connected to the detection tank, and the measuring pipe is connected to the other end of the connecting pipe. The measuring pipe is made of a transparent material, and scale lines are provided on the measuring pipe. A liquid level sensor can also be installed on the measuring pipe to monitor the water level in the measuring pipe in real time. The bottom of the measuring pipe is lower than the top of the detection tank, so that the water in the detection tank can enter the measuring pipe. A support frame is fixedly connected to the detection table, and on the top of the support frame, a first telescopic rod is fixedly connected. The movable end of the first telescopic rod is fixedly connected with a sealing cover that fits the detection tank. A second overflow pipe is connected to the top of the sealing cover, and a third valve is provided on the second overflow pipe. The sealing cover can seal the detection tank. It further includes:

[0007] A water seal assembly, which is installed on the detection table. One end of the water seal assembly is connected to the detection tank, and the water seal assembly is used to inject water into the detection tank. After the sealing cover seals the detection tank, the water seal assembly can fill the inside of the detection tank with water.

[0008] A sealing mechanism, which is installed at both ends of the stainless steel pipe fitting, and the sealing mechanism is used to seal both ends of the stainless steel pipe fitting.

[0009] An injection assembly, which is installed on the detection table. One end of the injection assembly is connected to one end of the sealing mechanism, and the injection assembly is used to inject water into the inside of the stainless steel pipe fitting and pressurize the water inside the stainless steel pipe fitting, so as to test the pressure that the stainless steel pipe fitting can withstand. When the stainless steel pipe fitting leaks or deforms, due to the incompressibility of the liquid, the liquid volume in the detection tank or the stainless steel pipe fitting increases. Since the sealing cover seals the top of the detection tank, the liquid cannot leak to the outside of the detection tank. Therefore, the excess liquid in the detection tank will enter the water level detector. By observing the liquid level height in the water level detector, it can be judged whether the stainless steel pipe fitting has leakage or deformation. And because the diameters of the connecting pipe and the measuring pipe are small, even if the deformation of the stainless steel pipe fitting is small, the liquid level in the water level detector will change greatly. This method can more obviously and intuitively judge the drug resistance performance of the stainless steel pipe fitting, avoiding the phenomenon of misjudgment caused by human factors and making the test results more accurate.

[0010] Further technical solution: The water seal assembly includes a water tank and a water supply pump, the water tank is arranged at the bottom of the testing platform, the water supply pump is installed on the testing platform, the water inlet of the water supply pump is connected to the water tank through a first water inlet pipe, and the water outlet of the water supply pump is connected to the detection tank box through a first water outlet pipe.

[0011] Further technical solution: A drain pipe is connected to the side of the detection tank box, one end of the drain pipe is connected to the water storage tank, and a first valve is provided on the drain pipe.

[0012] Further technical solution: the sealing mechanism comprises a left cover and a right cover, the left cover is mounted on one end of the stainless steel pipe, the right cover is mounted on the other end of the stainless steel pipe, the left cover and the right cover are both fixedly connected with a left slider, the two left sliders are both slidably connected to the placement rack, and the placement rack is provided with two slide grooves adapted to the left sliders;

[0013] In order to discharge the air in the stainless steel pipe and fill the space in the stainless steel pipe with water, the side of the left cover is connected to a first overflow pipe, the top of the first overflow pipe is higher than the top of the stainless steel pipe, and a second valve is also provided on the first overflow pipe.

[0014] Further technical solution: A fixing component is also provided, one end of which is connected to the left cover, and the other end of the fixing component is connected to the right cover. The fixing component is used to fix the left cover and the right cover to the stainless steel pipe fitting, thereby making the connection between the left cover, the right cover and the stainless steel pipe fitting more secure, avoiding water in the stainless steel pipe fitting from leaking from the left cover or the right cover, and ensuring the accuracy of the pressure test.

[0015] Further technical solution: the fixing assembly comprises a fixed pull rod and a movable pull rod, the side of the movable pull rod is fixedly connected with a guide rod, the guide rod is slidably connected with the fixed pull rod, the axes of the movable pull rod and the fixed pull rod coincide, the movable pull rod is rotatably connected with a screw rod, the screw rod is threadedly connected with the fixed pull rod, one end of the screw rod passes through the movable pull rod and is fixedly connected with an adjusting nut, the side of the adjusting nut facing away from the fixed pull rod is fixedly connected with a fastening rod, the side of the right cover is provided with a through hole adapted to the fastening rod, one end of the fastening rod is provided with a second external thread, and a locking nut is threadedly connected to the second external thread;

[0016] A waterproof sealing ring is provided between the left cover, the right cover and the stainless steel pipe fitting;

[0017] In order to enable the fixed pull rod to be conveniently connected to the left cover, a threaded sleeve is fixedly connected to the side of the left cover close to the stainless steel pipe fitting. One end of the fixed pull rod is provided with a first external thread adapted to the threaded sleeve, and the thread directions of the first external thread and the second external thread are the same;

[0018] In order to facilitate the rotation of the movable pull rod, a fixing nut is provided at one end of the movable pull rod.

[0019] Further technical solution: The fixing assembly further includes an elastic sealing assembly. The elastic sealing assembly is installed on the fastening rod. One end of the elastic sealing assembly elastically abuts against the side of the right cover, and the elastic sealing assembly is used to seal the through hole.

[0020] Further technical solution: The elastic sealing assembly includes a retaining piece. The retaining piece is sleeved on the fastening rod. The side of the retaining piece abuts against the side of the adjusting nut. A compression spring is fixedly connected to the other side of the retaining piece. One end of the compression spring is fixedly connected to a sealing piece. The sealing piece is provided with a through hole adapted to the fastening rod. The sealing piece abuts against the side of the right cover. A waterproof sealing ring is arranged between the through hole and the fastening rod.

[0021] Further technical solution: The water injection assembly includes a connecting pipe and a water injection pump. The connecting pipe is fixedly installed on the detection tank box. One end of the connecting pipe is communicated with a hose. One end of the hose is communicated with the left cover. The water injection pump is fixedly installed on the detection table. The water inlet of the water injection pump is communicated with the water storage tank through a second water inlet pipe. The water outlet of the water injection pump is communicated with the connecting pipe through a second water outlet pipe;

[0022] A water pressure sensor is installed on the connecting pipe, and the water pressure sensor is used to detect the water pressure inside the connecting pipe.

[0023] Further technical solution: The water injection assembly further includes a pressurizing assembly. The pressurizing assembly includes a pressurizing tank and a second telescopic rod. The pressurizing tank is fixedly installed on the detection table. A piston is slidably connected inside the pressurizing tank. The second telescopic rod is fixedly connected to the detection table. The movable end of the second telescopic rod is fixedly connected to the piston. Water is filled between the pressurizing tank and the piston. One end of the pressurizing tank away from the second telescopic rod is communicated with a pressurizing pipe, and the pressurizing pipe is communicated with the connecting pipe;

[0024] In order to enable the water injection pump and the pressurizing assembly to act independently, a three-way valve is arranged between the water injection pump and the connecting pipe. The outlet of the three-way valve is communicated with the connecting pipe. One end of the second water outlet pipe of the water injection pump is communicated with one inlet of the three-way valve. One end of the pressurizing pipe is communicated with the other inlet of the three-way valve.

[0025] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0026] 1. The present invention is provided with a water surface detector. When the stainless steel pipe fittings leak or deform, the water in the detection tank will enter the water surface detector, increasing the liquid level height in the water surface detector. By detecting or observing the liquid level height in the water surface detector, it can be determined whether the stainless steel pipe fittings leak or deform. Since the volume of the water surface detector is small, even if the deformation or leakage of the stainless steel pipe fittings is small, the water surface detector can clearly observe or detect it, thus making the detection result more accurate.

[0027] 2. The present invention is provided with a sealing mechanism, which can seal both ends of the stainless steel pipe fittings to prevent the water inside the stainless steel pipe fittings from leaking, thereby improving the test accuracy.

[0028] 3. The present invention is provided with a fixing component, which can firmly install the left sealing cover and the right sealing cover at both ends of the stainless steel pipe fittings, avoiding the situation of test failure caused by the left sealing cover and the right sealing cover falling off from the stainless steel pipe fittings.

[0029] 4. The present invention is provided with a fixed pull rod and a movable pull rod, and the length between them can be adjusted. By adjusting the different lengths between the fixed pull rod and the movable pull rod, the device can perform pressure resistance tests on different stainless steel pipe fittings without the need for pre-treatment of the test samples by the staff, expanding the test range and improving the work efficiency.

[0030] 5. The present invention is provided with an elastic sealing component. When the fixing component fixes the stainless steel pipe fittings, the sealing component abuts between the right sealing cover and the movable pull rod, preventing the water inside the stainless steel pipe fittings from leaking through the through hole, thereby making the test result more accurate.

[0031] 6. The present invention is provided with a pressurizing component. After the stainless steel pipe fittings are filled with water, the passage between the three-way valve and the injection water pump is closed, and the passage between the three-way valve and the pressurizing tank is opened. Then, the second telescopic rod drives the piston to move, and the piston squeezes the water in the pressurizing tank into the stainless steel pipe fittings, thereby pressurizing the water inside the stainless steel pipe fittings, avoiding the loss caused by the continuous operation of the injection water pump, and extending the service life of the injection water pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0033] Figure 2 It is a schematic diagram of the structure of the overall front view cross-section of the present invention.

[0034] Figure 3 In the present invention Figure 2 It is an enlarged schematic diagram of the structure at A in

[0035] Figure 4This is a schematic structural view of the cross-section of the sealing mechanism in the present invention.

[0036] Figure 5 This is a schematic structural view of the fixing component in the present invention.

[0037] Figure 6 This is a schematic structural view of the elastic sealing component in the present invention.

[0038] In the drawings: 1, water storage tank; 2, detection table; 3, detection tank box; 4, stainless steel pipe fitting; 5, drain pipe; 6, water supply pump; 7, sealing mechanism; 71, first overflow pipe; 72, left sealing cover; 73, left slider; 74, chute; 75, threaded sleeve; 76, right sealing cover; 8, sealing box cover; 9, second overflow pipe; 10, support frame; 11, first telescopic rod; 12, water surface detector; 13, water injection component; 131, water injection pump; 132, pressure pipe; 133, three-way valve; 134, pressure box; 135, piston; 136, connecting pipe; 137, water pressure sensor; 138, hose; 139, second telescopic rod; 14, placement seat; 15, placement rack; 16, fixing component; 161, locking nut; 162, first external thread; 163, fixing pull rod; 164, screw rod; 165, guide rod; 166, movable pull rod; 167, fixing nut; 168, adjusting nut; 169, fastening rod; 1610, second external thread; 17, elastic sealing component; 171, retaining piece; 172, compression spring; 173, sealing piece. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clear and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0040] The following describes in detail the specific implementation of the present invention with reference to specific embodiments.

[0041] As Figures 1-6As shown in the figure, a pressure resistance performance testing device for the production of stainless steel pipe fittings provided by the present invention includes a detection table 2, on which a detection tank box 3 is installed. Inside the detection tank box 3, a placement rack 15 is fixedly connected. On the top of the placement rack 15, a placement seat 14 is fixedly connected. The placement seat 14 is used to place the stainless steel pipe fitting 4. A water level detector 12 is connected to the side of the detection tank box 3. The water level detector 12 includes a connecting pipe and a measuring pipe. One end of the connecting pipe is connected to the detection tank box 3, and the measuring pipe is connected to the other end of the connecting pipe. The measuring pipe is made of a transparent material, and scale lines are provided on the measuring pipe. A liquid level sensor can also be installed on the measuring pipe to monitor the water level in the measuring pipe in real time. The bottom of the measuring pipe is lower than the top of the detection tank box 3, so that the water in the detection tank box 3 can enter the measuring pipe. A support frame 10 is fixedly connected to the detection table 2. On the top of the support frame 10, a first telescopic rod 11 is fixedly connected. The movable end of the first telescopic rod 11 is fixedly connected with a sealing box cover 8 adapted to the detection tank box 3. A second overflow pipe 9 is connected to the top of the sealing box cover 8. A third valve is provided on the second overflow pipe 9. The sealing box cover 8 can seal the detection tank box 3. It further includes:

[0042] A water seal assembly, which is installed on the detection table 2. One end of the water seal assembly is connected to the detection tank box 3. The water seal assembly is used to inject water into the detection tank box 3. After the sealing box cover 8 seals the detection tank box 3, the water seal assembly can fill the inside of the detection tank box 3 with water;

[0043] A sealing mechanism 7, which is installed at both ends of the stainless steel pipe fitting 4. The sealing mechanism 7 is used to seal both ends of the stainless steel pipe fitting 4;

[0044] An injection water assembly 13, which is installed on the detection table 2. One end of the injection water assembly 13 is connected to one end of the sealing mechanism 7. The injection water assembly 13 is used to inject water into the stainless steel pipe fitting 4 and pressurize the water inside the stainless steel pipe fitting 4, so as to test the pressure that the stainless steel pipe fitting 4 can withstand. When the stainless steel pipe fitting 4 leaks or deforms, due to the incompressibility of the liquid, the liquid volume in the detection tank box 3 or the stainless steel pipe fitting 4 increases. And because the sealing box cover 8 seals the top of the detection tank box 3, the liquid cannot leak to the outside of the detection tank box 3. Therefore, the excess liquid in the detection tank box 3 will enter the water level detector 12. By observing the liquid level height in the water level detector 12, it can be judged whether the stainless steel pipe fitting 4 has leakage or deformation. And because the diameters of the connecting pipe and the measuring pipe are small, even if the deformation of the stainless steel pipe fitting 4 is small, the liquid level in the water level detector 12 will change greatly. This method can more obviously and intuitively judge the drug resistance performance of the stainless steel pipe fitting 4, avoid the phenomenon of misjudgment caused by human factors, and make the test results more accurate.

[0045] As Figures 1-2 shown, a pressure resistance performance testing device for the production of stainless steel pipe fittings provided by the present invention. In this embodiment, the water seal assembly includes a water storage tank 1 and a water supply pump 6. The water storage tank 1 is arranged at the bottom of the detection table 2, and the water supply pump 6 is installed on the detection table 2. The water inlet of the water supply pump 6 is communicated with the water storage tank 1 through a first water inlet pipe, and the water outlet of the water supply pump 6 is communicated with the detection tank 3 through a first water outlet pipe.

[0046] As Figures 1-2 shown, a pressure resistance performance testing device for the production of stainless steel pipe fittings provided by the present invention. In this embodiment, a drain pipe 5 is communicated with the side of the detection tank 3. One end of the drain pipe 5 is communicated with the water storage tank 1, and a first valve is arranged on the drain pipe 5.

[0047] After the test, the first valve is opened, and the water in the detection tank 3 flows back into the water storage tank 1 through the drain pipe 5, which is convenient for the next use.

[0048] As Figures 1-4 shown, a pressure resistance performance testing device for the production of stainless steel pipe fittings provided by the present invention. In this embodiment, the sealing mechanism 7 includes a left sealing cover 72 and a right sealing cover 76. The left sealing cover 72 is installed at one end of the stainless steel pipe fitting 4, and the right sealing cover 76 is installed at the other end of the stainless steel pipe fitting 4. Left sliders 73 are fixedly connected to both the left sealing cover 72 and the right sealing cover 76. The two left sliders 73 are both slidably connected to the placement rack 15, and two chutes 74 adapted to the left sliders 73 are provided on the placement rack 15;

[0049] In order to discharge the air in the stainless steel pipe fitting 4 and make the water fill the space in the stainless steel pipe fitting 4, a first overflow pipe 71 is communicated with the side of the left sealing cover 72. The top of the first overflow pipe 71 is higher than the top of the stainless steel pipe fitting 4, and a second valve is also arranged on the first overflow pipe 71.

[0050] When the water injection assembly 13 fills water into the stainless steel pipe fitting 4, the second valve is opened, and the water injection assembly 13 continuously injects water into the stainless steel pipe fitting 4. When it is found that the water in the stainless steel pipe fitting 4 overflows from the first overflow pipe 71, it means that the stainless steel pipe fitting 4 is filled with water. At this time, the second valve is closed, and then the pressure resistance test of the stainless steel pipe fitting 4 can be carried out.

[0051] As Figures 4-5As shown in the figure, the present invention provides a pressure resistance performance testing device for the production of stainless steel pipe fittings. In order to firmly install the left cover 72 and the right cover 76 at both ends of the stainless steel pipe fitting 4, in this embodiment, a fixing component 16 is further provided. One end of the fixing component 16 is connected to the left cover 72, and the other end of the fixing component 16 is connected to the right cover 76. The fixing component 16 is used to fix the left cover 72 and the right cover 76 on the stainless steel pipe fitting 4, so that the connection between the left cover 72, the right cover 76 and the stainless steel pipe fitting 4 is more firm, avoiding the leakage of water in the stainless steel pipe fitting 4 from the left cover 72 or the right cover 76, and ensuring the accuracy of the pressure resistance test.

[0052] As Figures 4-5 shown in the figure, the present invention provides a pressure resistance performance testing device for the production of stainless steel pipe fittings. In this embodiment, the fixing component 16 includes a fixed pull rod 163 and a movable pull rod 166. A guide rod 165 is fixedly connected to the side surface of the movable pull rod 166. The guide rod 165 is slidably connected to the fixed pull rod 163. The axes of the movable pull rod 166 and the fixed pull rod 163 coincide. A screw rod 164 is rotatably connected to the movable pull rod 166. The screw rod 164 is threadedly connected to the fixed pull rod 163. One end of the screw rod 164 passing through the movable pull rod 166 is fixedly connected to an adjusting nut 168. A fastening rod 169 is fixedly connected to the side surface of the adjusting nut 168 facing away from the fixed pull rod 163. A through hole adapted to the fastening rod 169 is provided on the side surface of the right cover 76. A second external thread 1610 is provided at one end of the fastening rod 169. A locking nut 161 is threadedly connected to the second external thread 1610;

[0053] A waterproof sealing ring is provided between both the left cover 72 and the right cover 76 and the stainless steel pipe fitting 4;

[0054] In order to facilitate the connection between the fixed pull rod 163 and the left cover 72, a threaded sleeve 75 is fixedly connected to the side surface of the left cover 72 close to the stainless steel pipe fitting 4. A first external thread 162 adapted to the threaded sleeve 75 is provided at one end of the fixed pull rod 163. The thread directions of the first external thread 162 and the second external thread 1610 are the same;

[0055] When installing the fixing component 16, first pass the fixing pull rod 163 and the movable pull rod 166 through the inside of the stainless steel pipe fitting 4, and screw one end of the fixing pull rod 163 into the threaded sleeve 75. Then, according to the length of the stainless steel pipe fitting 4, rotate the adjusting nut 168. The adjusting nut 168 drives the screw rod 164 to rotate. Under the reaction force, the screw rod 164 drives the movable pull rod 166 to move, so that the length between the fixing pull rod 163 and the movable pull rod 166 can be adjusted, and the fastening rod 169 can be adjusted to a suitable position. Then, sleeved the right end cover 76 onto the fastening rod 169, and finally use the locking nut 161 to fix the fastening rod 169, so that the left end cover 72 and the right end cover 76 can be firmly installed at both ends of the stainless steel pipe fitting 4. And by adjusting the different lengths between the fixing pull rod 163 and the movable pull rod 166, this device can perform pressure resistance tests on different stainless steel pipe fittings 4 without the need for staff to pre-treat the test samples, expanding the test range and improving work efficiency;

[0056] In order to facilitate the rotation of the movable pull rod 166, a fixing nut 167 is provided at one end of the movable pull rod 166.

[0057] As Figures 4-6 shown, a pressure resistance performance test device for the production of stainless steel pipe fittings provided by the present invention. In order to prevent the water in the stainless steel pipe fitting 4 from leaking from the through hole, in this embodiment, the fixing component 16 further includes an elastic sealing component 17. The elastic sealing component 17 is installed on the fastening rod 169. One end of the elastic sealing component 17 elastically abuts against the side surface of the right end cover 76, and the elastic sealing component 17 is used to seal the through hole.

[0058] As Figures 4-6 shown, a pressure resistance performance test device for the production of stainless steel pipe fittings provided by the present invention. In this embodiment, the elastic sealing component 17 includes a retaining piece 171. The retaining piece 171 is sleeved on the fastening rod 169. The side surface of the retaining piece 171 abuts against the side surface of the adjusting nut 168. Another side surface of the retaining piece 171 is fixedly connected with a compression spring 172. One end of the compression spring 172 is fixedly connected with a sealing piece 173. The sealing piece 173 is provided with a through hole adapted to the fastening rod 169. The sealing piece 173 abuts against the side surface of the right end cover 76, and a waterproof sealing ring is arranged between the through hole and the fastening rod 169.

[0059] As Figures 1-3As shown in the figure, a pressure resistance performance testing device for the production of stainless steel pipe fittings provided by the present invention is shown. In this embodiment, the water injection assembly 13 includes a connecting pipe 136 and a water injection pump 131. The connecting pipe 136 is fixedly installed on the detection tank 3. One end of the connecting pipe 136 is communicated with a hose 138, and one end of the hose 138 is communicated with the left cover 72. The water injection pump 131 is fixedly installed on the detection table 2. The water inlet of the water injection pump 131 is communicated with the water storage tank 1 through a second water inlet pipe, and the water outlet of the water injection pump 131 is communicated with the connecting pipe 136 through a second water outlet pipe;

[0060] A water pressure sensor 137 is installed on the connecting pipe 136. The water pressure sensor 137 is used to detect the water pressure inside the connecting pipe 136. Since the connecting pipe 136 is internally communicated with the stainless steel pipe fitting 4 and the water between the connecting pipe 136 and the stainless steel pipe fitting 4 is static, according to Pascal's principle, the water pressure at any point inside the connecting pipe 136 is the same as the water pressure at any point inside the stainless steel pipe fitting 4. Therefore, the water pressure sensor 137 can detect the water pressure inside the stainless steel pipe fitting 4.

[0061] When injecting water into the stainless steel pipe fitting 4 again, the water injection pump 131 pumps the water in the water storage tank 1 into the stainless steel pipe fitting 4. When the stainless steel pipe fitting 4 is filled with water, the water injection pump 131 continues to pump water, so as to pressurize the water inside the stainless steel pipe fitting 4, and then the pressure resistance performance of the stainless steel pipe fitting 4 can be tested.

[0062] As Figures 1-3 shown in the figure, a pressure resistance performance testing device for the production of stainless steel pipe fittings provided by the present invention. When the water injection pump 131 runs continuously and the water inside the water injection pump 131 does not flow, it will cause loss to the water injection pump 131 and reduce the service life of the water injection pump 131. Therefore, in this embodiment, the water injection assembly 13 further includes a pressurization assembly. The pressurization assembly includes a pressurization tank 134 and a second telescopic rod 139. The pressurization tank 134 is fixedly installed on the detection table 2. A piston 135 is slidably connected inside the pressurization tank 134. The second telescopic rod 139 is fixedly connected to the detection table 2, and the movable end of the second telescopic rod 139 is fixedly connected to the piston 135. Water is filled between the pressurization tank 134 and the piston 135. One end of the pressurization tank 134 away from the second telescopic rod 139 is communicated with a pressurization pipe 132, and the pressurization pipe 132 is communicated with the connecting pipe 136;

[0063] In order to enable the water injection pump 131 and the pressurization assembly to act independently, a three-way valve 133 is provided between the water injection pump 131 and the connecting pipe 136. The outlet of the three-way valve 133 is communicated with the connecting pipe 136. One end of the second water outlet pipe of the water injection pump 131 is communicated with one inlet of the three-way valve 133, and one end of the pressurization pipe 132 is communicated with the other inlet of the three-way valve 133.

[0064] After the stainless-steel pipe fitting 4 is filled with water, the passage between the three-way valve 133 and the water injection pump 131 is closed, the passage between the three-way valve 133 and the pressure tank 134 is opened, and then the second telescopic rod 139 drives the piston 135 to move. The piston 135 squeezes the water in the pressure tank 134 into the stainless-steel pipe fitting 4, so that the water in the stainless-steel pipe fitting 4 can be pressurized, and the service life of the water injection pump 131 is extended.

[0065] Working principle: When installing the stainless-steel pipe fitting 4, insert the fixing component 16 into the stainless-steel pipe fitting 4, place the stainless-steel pipe fitting 4 on the placing seat 14, move the left sealing cover 72 so that the left sealing cover 72 sleeves on one end of the stainless-steel pipe fitting 4, and then rotate the fixing nut 167. The fixing nut 167 drives the movable pull rod 166 to rotate. The movable pull rod 166 drives the fixed pull rod 163 to rotate through the guide rod 165, so that one end of the fixed pull rod 163 screws into the threaded sleeve 75. Then rotate the adjusting nut 168 to adjust the length of the fixing component 16 according to the length of the stainless-steel pipe fitting 4. Then sleeved the elastic sealing component 17 on the fastening rod 169. Finally, move the right sealing cover 76 so that one end of the fastening rod 169 passes through the through hole on the right sealing cover 76 and extends outside the right sealing cover 76, and then use the locking nut 161 to fix the right sealing cover 76 on the stainless-steel pipe fitting 4;

[0066] Then start the water injection pump 131. The water injection pump 131 pumps the water in the water storage tank 1 into the stainless-steel pipe fitting 4. After water overflows at the first overflow pipe 71, close the second valve on the first overflow pipe 71. The first telescopic rod 11 drives the sealing box cover 8 to descend, so that the sealing box cover 8 closes the detection tank box 3. Then the water supply pump 6 pumps the water in the water storage tank 1 into the detection tank box 3. After water overflows at the second overflow pipe 9, close the third valve on the second overflow pipe 9, and then stop the water supply pump 6;

[0067] Close the passage between the water injection pump 131 and the connecting pipe 136 through the three-way valve 133, open the passage between the pressure pipe 132 and the connecting pipe 136, start the second telescopic rod 139, and the second telescopic rod 139 drives the piston 135 to squeeze the water inside the pressure tank 134. Since the pressure tank 134, the pressure pipe 132, the connecting pipe 136, the hose 138 and the stainless-steel pipe fitting 4 are connected, the piston 135 can pressurize the water in the stainless-steel pipe fitting 4, and then the pressure resistance performance of the stainless-steel pipe fitting 4 can be tested;

[0068] When the stainless steel pipe fitting 4 leaks, the water in the pressure tank 134 will be replenished into the stainless steel pipe fitting 4, and the water in the stainless steel pipe fitting 4 will leak into the detection tank 3. The water in the detection tank 3 increases. When the stainless steel pipe fitting 4 is deformed, the volume of the stainless steel pipe fitting 4 increases, and the stainless steel pipe fitting 4 squeezes the water in the detection tank 3 to flow. Since the sealing cover 8 seals the detection tank 3, the water in the detection tank 3 will enter the water level detector 12, increasing the liquid level height in the water level detector 12. By detecting or observing the liquid level height in the water level detector 12, it can be determined whether the stainless steel pipe fitting 4 leaks or is deformed. And because the volume of the water level detector 12 is small, even if the deformation or leakage of the stainless steel pipe fitting 4 is small, the water level detector 12 can clearly observe or detect it, making the detection result more accurate.

[0069] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0070] In addition, it should be understood that although this specification is described according to the embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A pressure resistance test device for the production of stainless steel pipe fittings, comprising a detection table (2), characterized in that, A detection table (2) is provided with a detection tank box (3). Inside the detection tank box (3), a placement rack (15) is fixedly connected. At the top of the placement rack (15), a placement seat (14) is fixedly connected. The placement seat (14) is used for placing stainless steel pipe fittings (4). A water surface detector (12) is communicated with the side of the detection tank box (3). The water surface detector (12) includes a communicating pipe and a measuring pipe. One end of the communicating pipe is communicated with the detection tank box (3), and the measuring pipe is communicated with the other end of the communicating pipe. The measuring pipe is made of a transparent material, and the bottom of the measuring pipe is lower than the top of the detection tank box (3). A support frame (10) is fixedly connected to the detection table (2). At the top of the support frame (10), a first telescopic rod (11) is fixedly connected. The movable end of the first telescopic rod (11) is fixedly connected with a sealing box cover (8) adapted to the detection tank box (3). A second overflow pipe (9) is communicated with the top of the sealing box cover (8). A third valve is arranged on the second overflow pipe (9). Further included are: A water seal assembly, which is installed on the detection table (2). One end of the water seal assembly is communicated with the detection tank box (3), and the water seal assembly is used for injecting water into the detection tank box (3); A sealing mechanism (7), which is installed at both ends of the stainless steel pipe fitting (4), and the sealing mechanism (7) is used for sealing both ends of the stainless steel pipe fitting (4); An injection assembly (13), which is installed on the detection table (2). One end of the injection assembly (13) is communicated with one end of the sealing mechanism (7), and the injection assembly (13) is used for injecting water into the interior of the stainless steel pipe fitting (4) and pressurizing the water inside the stainless steel pipe fitting (4).

2. The pressure resistance performance testing equipment for the production of stainless steel pipe fittings according to claim 1, characterized in that, The water seal assembly includes a water storage tank (1) and a water supply pump (6). The water storage tank (1) is arranged at the bottom of the detection table (2). The water supply pump (6) is installed on the detection table (2). The water inlet of the water supply pump (6) is communicated with the water storage tank (1) through a first water inlet pipe, and the water outlet of the water supply pump (6) is communicated with the detection tank box (3) through a first water outlet pipe.

3. The pressure resistance performance testing equipment for the production of stainless steel pipe fittings according to claim 2, characterized in that, A drain pipe (5) is communicated with the side of the detection tank box (3). One end of the drain pipe (5) is communicated with the water storage tank (1), and a first valve is arranged on the drain pipe (5).

4. The pressure resistance performance testing device for the production of stainless steel pipe fittings according to claim 2, wherein, The sealing mechanism (7) includes a left sealing cover (72) and a right sealing cover (76). The left sealing cover (72) is installed at one end of the stainless steel pipe fitting (4), and the right sealing cover (76) is installed at the other end of the stainless steel pipe fitting (4). Left sliding blocks (73) are fixedly connected to both the left sealing cover (72) and the right sealing cover (76). The two left sliding blocks (73) are both slidably connected to the placement rack (15), and two sliding grooves (74) adapted to the left sliding blocks (73) are formed on the placement rack (15); A first overflow pipe (71) is communicated with the side of the left sealing cover (72). The top of the first overflow pipe (71) is higher than the top of the stainless steel pipe fitting (4), and a second valve is further arranged on the first overflow pipe (71).

5. The pressure resistance performance test equipment for the production of stainless steel pipe fittings according to claim 4, characterized in that, It further includes a fixing component (16). One end of the fixing component (16) is connected to the left cover (72), and the other end of the fixing component (16) is connected to the right cover (76). The fixing component (16) is used to fix the left cover (72) and the right cover (76) on the stainless steel pipe fitting (4).

6. The pressure resistance performance testing equipment for stainless steel pipe fittings according to claim 5, characterized in that, The fixing component (16) includes a fixing pull rod (163) and a movable pull rod (166). A guide rod (165) is fixedly connected to the side of the movable pull rod (166). The guide rod (165) is slidably connected to the fixing pull rod (163). The axes of the movable pull rod (166) and the fixing pull rod (163) coincide. A screw rod (164) is rotatably connected to the movable pull rod (166). The screw rod (164) is threadedly connected to the fixing pull rod (163). One end of the screw rod (164) passing through the movable pull rod (166) is fixedly connected to an adjusting nut (168). A fastening rod (169) is fixedly connected to the side of the adjusting nut (168) facing away from the fixing pull rod (163). A through hole adapted to the fastening rod (169) is formed in the side of the right cover (76). A second external thread (1610) is provided at one end of the fastening rod (169). A locking nut (161) is threadedly connected to the second external thread (1610); A threaded sleeve (75) is fixedly connected to the side of the left cover (72) close to the stainless steel pipe fitting (4). A first external thread (162) adapted to the threaded sleeve (75) is provided at one end of the fixing pull rod (163). The thread directions of the first external thread (162) and the second external thread (1610) are the same; A fixing nut (167) is provided at one end of the movable pull rod (166).

7. The pressure resistance performance testing equipment for stainless steel pipe fittings according to claim 6, characterized in that, The fixing component (16) further includes an elastic sealing component (17). The elastic sealing component (17) is installed on the fastening rod (169). One end of the elastic sealing component (17) elastically abuts against the side of the right cover (76). The elastic sealing component (17) is used to seal the through hole.

8. The pressure resistance performance testing equipment for stainless steel pipe fittings production according to claim 7, characterized in that, The elastic sealing component (17) includes a retaining piece (171). The retaining piece (171) is sleeved on the fastening rod (169). The side of the retaining piece (171) abuts against the side of the adjusting nut (168). A compression spring (172) is fixedly connected to the other side of the retaining piece (171). A sealing piece (173) is fixedly connected to one end of the compression spring (172). A through hole adapted to the fastening rod (169) is formed in the sealing piece (173). The sealing piece (173) abuts against the side of the right cover (76). A waterproof sealing ring is provided between the through hole and the fastening rod (169).

9. The pressure resistance performance testing equipment for the production of stainless steel pipe fittings according to claim 4, characterized in that, The water injection assembly (13) includes a connecting pipe (136) and a water injection pump (131). The connecting pipe (136) is fixedly installed on the detection tank box (3). One end of the connecting pipe (136) is communicated with a hose (138). One end of the hose (138) is communicated with the left cover (72). The water injection pump (131) is fixedly installed on the detection table (2). The water inlet of the water injection pump (131) is communicated with the water storage tank (1) through a second water inlet pipe. The water outlet of the water injection pump (131) is communicated with the connecting pipe (136) through a second water outlet pipe; A water pressure sensor (137) is installed on the connecting pipe (136).

10. The pressure resistance performance test device for the production of stainless steel pipe fittings according to claim 9, characterized in that, The water injection assembly (13) further includes a pressurizing assembly. The pressurizing assembly includes a pressurizing tank (134) and a second telescopic rod (139). The pressurizing tank (134) is fixedly installed on the detection table (2). A piston (135) is slidably connected inside the pressurizing tank (134). The second telescopic rod (139) is fixedly connected to the detection table (2). The movable end of the second telescopic rod (139) is fixedly connected to the piston (135). Water is filled between the pressurizing tank (134) and the piston (135). One end of the pressurizing tank (134) away from the second telescopic rod (139) is communicated with a pressurizing pipe (132). The pressurizing pipe (132) is communicated with the connecting pipe (136); A three-way valve (133) is arranged between the water injection pump (131) and the connecting pipe (136). The outlet of the three-way valve (133) is communicated with the connecting pipe (136). One end of the second water outlet pipe of the water injection pump (131) is communicated with one inlet of the three-way valve (133). One end of the pressurizing pipe (132) is communicated with the other inlet of the three-way valve (133).

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