Constant-temperature pressure resistance testing device for water suction pipe

Abstract

The utility model discloses a constant temperature and pressure resistance testing device for a water suction pipe, which comprises a positive pressure testing device and a negative pressure testing device, and the positive pressure testing device and the negative pressure testing device are connected through a pipeline. According to the utility model, the hydraulic lifting device is arranged in the negative pressure testing device, so that the automatic winding and unwinding management of the water suction pipe is completed, and the heat loss is avoided. Meanwhile, a water pump is utilized, and a water inlet and a water outlet are formed in the positive pressure testing device and the negative pressure testing device, so that simultaneous operation of the negative pressure testing device and the positive pressure testing device and water recycling are effectively achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of water suction pipe pressure resistance detection, and in particular to a constant temperature and pressure resistance testing device for a water suction pipe. Background Art

[0002] Suction pipes are used in a wide range of applications and are often affected by temperature and pressure fluctuations. To ensure their performance meets the demands of various usage scenarios, constant temperature and pressure testing is required during the product design and research process.

[0003] The pressure test of the suction pipe includes positive pressure test and negative pressure test. The positive pressure test is to inject water into the suction pipe to increase the pressure to simulate the use state, or to continuously pressurize it to test whether the limit burst pressure value meets the standard; the negative pressure test is to extract the gas in the pipe with an air pump to generate negative pressure inside the pipe and observe whether the pipe is deformed or leaking. At the same time, the pressure test process of the suction pipe should be maintained in a specified constant temperature environment, and water is often used as a heat transfer medium, that is, the test process will be carried out in a constant temperature water tank. However, the current constant temperature pressure test device only includes one of the positive pressure or negative pressure test devices, and the steps are cumbersome during the removal of the test pipe and the installation and disassembly of the components, which is prone to heat loss. Utility Model Content

[0004] The utility model aims to overcome the problems in the prior art of a constant temperature and pressure test device for a water suction pipe, such as single use, troublesome installation and disassembly, and easy heat loss, and provides a constant temperature and pressure test device for a water suction pipe.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is: to provide a constant temperature and pressure resistance testing device for a water suction pipe, including a negative pressure testing device, the negative pressure testing device including a box, a hydraulic lifting device, a net bag and a heating device, the hydraulic lifting device is installed on the top of the box, the bottom of the hydraulic lifting device is connected to the net bag, and the heating device is laid on the bottom of the box.

[0006] In one embodiment, the hydraulic lifting device includes a cylinder and a piston rod, the piston rod is fixedly connected to the cylinder, the cylinder is installed at the top end of the outer side of the box body, and the piston rod passes through the mounting hole on the box body and is connected to the net bag inside the box body.

[0007] In one embodiment, a first water outlet and a first water inlet are provided on the wall of the box body. The first water outlet is used to extract water from the box body, and the first water inlet is used to inject water into the box body.

[0008] In one embodiment, the constant temperature and pressure resistance testing device further includes a positive pressure testing device, and the positive pressure testing device includes a water pump, and the water pump is connected to the first water outlet through a pipeline.

[0009] In one embodiment, the positive pressure testing device includes a fixing pile and a fixing accessory, the fixing accessory is installed on the fixing pile, and the fixing accessory includes a first accessory and a second accessory, the first accessory and the second accessory are respectively installed at the two ends of the water suction pipe to be tested, the first accessory is connected to the second water injection port, the second water injection port is used to inject water into the water suction pipe to be tested, and the second accessory is connected to the second water outlet, and the second water outlet is used to draw water out from the water suction pipe to be tested.

[0010] In one embodiment, the water pump is connected to the second water inlet through a pipeline, and the second water outlet is connected to the first water inlet through a pipeline.

[0011] In one embodiment, a camera is installed inside the net bag.

[0012] In one embodiment, a warning device is installed on the water pump.

[0013] In one embodiment, the negative pressure testing device includes a vacuum pump, which is installed on the outside of the box and connected to the box through a pipeline.

[0014] In summary, the present invention achieves automated retraction and extension of the suction pipe by installing a hydraulic lifting device in the negative pressure test device, thus preventing heat loss. Furthermore, by utilizing a water pump and providing water inlets and outlets on both the positive and negative pressure test devices, the negative and positive pressure test devices can be operated simultaneously, effectively enabling water recycling.

[0015] In order to make the above features and advantages of the utility model more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of a constant temperature and pressure test device for a water suction pipe according to the present invention.

[0017] In the drawings, like reference numerals refer to the same drawing elements. DETAILED DESCRIPTION

[0018] To make the purpose and technical solutions of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] In the description of the present invention, it should be understood that the terms "center", "up", "down", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.

[0020] like Figure 1 As shown, the present invention provides a constant-temperature and pressure-resistant testing device for a water suction pipe. The device comprises a negative pressure testing device 1, a positive pressure testing device 2, and a rack 3. The negative pressure testing device 1 and the positive pressure testing device 2 are connected by a pipeline, with the positive pressure testing device 2 mounted at the upper end of the rack 3 and the negative pressure testing device 1 mounted at the lower end of the rack 3. Both the positive pressure testing device 2 and the negative pressure testing device 1 are provided with a water inlet and a water outlet, which are connected by a pipeline to achieve water recycling within the device. Furthermore, if the required test temperature is the same, the water suction pipe can be tested simultaneously for both positive and negative pressure performance.

[0021] The negative pressure testing device includes a box 11, a vacuum pump 12, a hydraulic lifting device 13, a net bag 14, a camera 15, and a heating device 16. The box 11 is connected to the external vacuum pump 12 via a pipe 17. The hydraulic lifting device 13 is installed on the top of the box 11. The hydraulic lifting device 13 is connected to the net bag 14 inside the box 11. The camera 15 is installed inside the net bag 14. The heating device 16 is laid on the bottom of the box 11. A first water inlet 111 and a first water outlet 112 are opened on the wall of the box 11. The first water inlet 111 and the first water outlet 112 are both connected to the positive pressure testing device via pipes. The hydraulic lifting device 13 includes a cylinder 131 and a piston rod 132. The piston rod 132 is mounted at the bottom end of the cylinder 131. The cylinder 131 is mounted at the top end of the outer side of the box 11. The piston rod 132 passes through the mounting hole 113 on the box 11 and is connected to the net bag 14 inside the box 11. The net bag 14 is made of stainless steel.

[0022] The water suction pipe 19 to be tested will be placed in the negative pressure testing device 1. The water suction pipe 19 is placed in the net bag 14, and the two ends of the water suction pipe 19 are sealed using a special joint 18. The joint 18 can be connected to the vacuum pump 12 through the pipeline 17. After the joint 18 seals the water suction pipe 19, the inside of the water suction pipe 19 can be sealed. The parameters of the heating device 16 are set to heat the water medium in the box 11. When the inside of the box 11 reaches the specified temperature, the heating device 16 starts to run the insulation program. Since the box 11 is a sealed structure, a constant temperature water bath environment can be generated inside the box 11. When the water temperature stabilizes, the hydraulic lifting device 13 is started, and the hydraulic lifting device 13 will drive the piston rod 132 to move downward, and drive the net bag 14 and the water suction pipe 19 downward to immerse in the water bath. When the water covers the entire surface of the water suction pipe 19, the vacuum pump 12 is turned on, the pressure value is designed and adjusted, and the water suction pipe 19 is vacuumed. During the vacuuming process, the camera 15 can be used to closely observe the deformation or gas overflow of the water suction pipe 19 under the negative pressure state in the constant temperature water bath to determine the negative pressure resistance and sealing performance of the water suction pipe 19. At the same time, an alarm 121 is installed on the vacuum pump 12. The alarm 121 will sound an alarm after the test begins, preventing unauthorized personnel from approaching the device to avoid casualties caused by the explosion of the water suction pipe. In addition, during the test, the water suction pipe 19 only needs to be retracted and extended using the hydraulic lifting device 13, avoiding the disruption of the temperature balance when opening the negative pressure test device 1 and then inserting the water suction pipe 19. The box body 11 always remains sealed, the environment inside the box remains stable, and the heat loss is small, effectively ensuring the accuracy of the test data.

[0023] The positive pressure testing device 2 includes a fixed pile 21, a fixed fitting 22, and a water pump 23. The fixed fitting 22 is mounted on the fixed pile 21 and connected to the water pump 23 via a pipeline. The fixed fitting 22 includes a first fitting 221 and a second fitting 222, which are respectively mounted at the ends of the water suction pipe 24 to be tested. The first fitting 221 is connected to the pipeline 25 via a second water inlet 2211, and the second fitting 222 is connected to the pipeline 26 via a second water outlet 2221. The other end of the pipeline 26 is connected to the first water inlet 111 on the housing 11, and the other end of the pipeline 25 is connected to the water pump 23. The water pump 23 includes a third water inlet 231 and a third water outlet 232. The third water inlet 231 is connected to the first water outlet 112 on the housing 11 via a pipeline 27, and the third water outlet 232 is connected to the second water inlet 2211 via a pipeline 25. By cooperating with the water pump 23 and all the pipes, the positive pressure test device 2 and the negative pressure test device 1 can be connected to each other, thereby achieving water circulation. In addition, a warning device 233 is installed on the water pump 23 to warn unauthorized personnel and operators of danger.

[0024] During a positive pressure test, the suction pipe 24 to be tested is mounted on the positive pressure test device 2 via the fixing fitting 22. The water pump 23 is turned on and the desired pressure is set. The water pump 23 draws water from the housing 11 of the negative pressure test device 1 and delivers it to the suction pipe 24 in the positive pressure test device 2. This draining operation injects a certain pressure into the suction pipe 24. If a specific water temperature is required, the temperature parameters of the heating device 16 can be adjusted to increase the temperature. Positive pressure testing typically includes two modes: constant pressure testing and extreme pressure testing. The constant pressure test requires setting a series of test pressures on the water pump 23. After reaching the desired pressure, the pressure is maintained for a period of time to observe whether the suction pipe 24 bursts. The test results determine whether the pressure resistance of the suction pipe 24 meets the requirements. The extreme pressure test aims to test the ultimate pressure value of the suction pipe 24. During the test, the pressure parameters of the water pump 23 are continuously increased, and water is continuously injected into the suction pipe 24 until a burst occurs.

[0025] At the start of the positive pressure test, the water required for the test is pumped from the negative pressure test device 1 using the water pump 23 and transported to the fixedly installed water suction pipe 24 using multiple pipes. The water passes through the first water outlet 112, the pipe 27, the third water inlet 231, the water pump 23, the third water outlet 232, the pipe 25, and the second water inlet 2211 on the negative pressure test device 1 before being injected into the water suction pipe 24. After the test is completed, the water pump 23 is turned off, and the water flows back into the negative pressure test device 1 by gravity. After passing through the second water outlet 2221, the pipe 26, and the first water inlet 111, the water is transported from the water suction pipe 24 back to the housing 11 of the negative pressure test device 1 for the next negative pressure test. This design achieves water circulation, which further achieves temperature balance in various parts of the water. In addition, the test requirement of the water suction pipe 24 at a specific temperature is also met.

[0026] In summary, the present invention, through the installation of the hydraulic lifting device 13, achieves automated retraction and deployment management of the suction pipe without disrupting the temperature balance of the water bath within the device, thus preventing heat loss. Furthermore, the use of the water pump 23 and the provision of multiple water inlets and outlets on the positive pressure test device 2 and the negative pressure test device 1 effectively enable simultaneous operation of the negative and positive pressure test devices and water recycling.

[0027] Although the present invention has been disclosed above with reference to the embodiments, they are not intended to limit the present invention. Anyone with ordinary skill in the art may make slight modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the scope of the appended patent applications.

Claims

1. A constant temperature and pressure test device for a water suction pipe, characterized in that: It includes a negative pressure testing device, which includes a box, a hydraulic lifting device, a net bag and a heating device. The hydraulic lifting device is installed on the top of the box, the bottom of the hydraulic lifting device is connected to the net bag, and the heating device is laid on the bottom of the box.

2. A constant temperature and pressure test device for a water suction pipe according to claim 1, characterized in that: The hydraulic lifting device includes a cylinder and a piston rod, the piston rod is fixedly connected to the cylinder, the cylinder is installed at the top end of the outer side of the box body, and the piston rod passes through the mounting hole on the box body and is connected to the net bag inside the box body.

3. A constant temperature and pressure test device for a water suction pipe according to claim 2, characterized in that: A first water outlet and a first water inlet are provided on the wall of the box body. The first water outlet is used to extract water from the box body, and the first water inlet is used to inject water into the box body.

4. A constant temperature and pressure test device for a water suction pipe according to claim 3, characterized in that: The constant temperature and pressure test device further includes a positive pressure test device, which includes a water pump connected to the first water outlet via a pipeline.

5. A constant temperature and pressure test device for a water suction pipe according to claim 4, characterized in that: The positive pressure testing device includes a fixing pile and a fixing accessory. The fixing accessory is installed on the fixing pile. The fixing accessory includes a first accessory and a second accessory. The first accessory and the second accessory are respectively installed at both ends of the water suction pipe to be tested. The first accessory is connected to the second water injection port, and the second water injection port is used to inject water into the water suction pipe to be tested. The second accessory is connected to the second water outlet, and the second water outlet is used to draw water out from the water suction pipe to be tested.

6. A constant temperature and pressure test device for a water suction pipe according to claim 5, characterized in that: The water pump is connected to the second water inlet through a pipeline, and the second water outlet is connected to the first water inlet through a pipeline.

7. A constant temperature and pressure test device for a water suction pipe according to claim 6, characterized in that: A camera is installed inside the net bag.

8. A constant temperature and pressure test device for a water suction pipe according to claim 7, characterized in that: A warning device is installed on the water pump.

9. A constant temperature and pressure test device for a water suction pipe according to claim 8, characterized in that: The negative pressure testing device includes a vacuum pump, which is installed on the outside of the box and connected to the box through a pipeline.

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