Threaded connection valve testing device
By designing a threaded valve test device including a pipeline bracket and a water pressure test bench, the problem of difficulty in conducting multiple threaded valve tests in the prior art is solved, and an efficient and integrated test solution is achieved.
Patent Information
- Application Number
- CN202411905107.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-23
- Publication Date
- 2025-02-28
AI Technical Summary
The prior art is difficult to conduct shell, seal, bending and torsional tests of threaded valves at the same time, and the test efficiency is low, requiring a variety of equipment and tooling.
A threaded valve test device is designed, including a pipeline bracket and a water pressure test bench. The pipeline is divided into the left section and the right section. The left port is equipped with a fast pressure interface. The right port is equipped with a square notch adapted to a digital torque wrench. It is equipped with an automatic exhaust valve and a lifting bracket. It can perform shell, seal, bending and torsional tests at the same time.
Multiple tests of threaded valves have been carried out on integrated equipment, which improves test efficiency, simplifies equipment configuration, and reduces test time and labor costs.
Smart Images
Figure CN119533921A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of valve testing, and in particular to a threaded valve testing device. Background Art
[0002] Threaded valves are usually used in low-pressure projects with a pressure not exceeding 4MPa, and the diameter is generally not greater than DN100. According to the national standard "GB / T 8464-2023 Iron, Copper and Stainless Steel Threaded Valves", the inspection items of threaded valves include key items such as shell strength, sealing performance, bending resistance, and torsion resistance. Generally, valve manufacturers and testing agencies use a set of equipment to test the shell strength and sealing performance of threaded valves. The bending resistance and torsion resistance need to be carried out on a special mechanical performance test device, and the corresponding tooling needs to be configured. The whole set of tests is time-consuming and labor-intensive. Summary of the invention
[0003] The purpose of the invention is to provide a threaded valve testing device.
[0004] In order to achieve the above object, the technical solution of the present invention is: A threaded valve testing device, characterized in that it comprises a pipe support and a water pressure test bench, the pipe support stores a test pipe, the test pipe is divided into a left section and a right section, the left port of the left section of the test pipe is provided with a quick pressure interface, the right port of the right section of the test pipe is provided with a square recess adapted to a digital torque wrench, the left section and the right section of the test pipe are respectively equipped with exhaust valves, a test pump and a test pump water tank are provided on the front side of the water pressure test bench, a pressure gauge is connected to the test pump water tank, a round pipe vise is provided above the test pump and the test pump water tank, and a bending force test is provided on the rear side of the water pressure test bench The bending force test bench is provided with a hydraulic cylinder at the upper end, the cylinder shaft of the hydraulic cylinder is provided with a lifting pressure rod, the lower end of the lifting pressure rod is provided with a pressure sensor, at least two lifting brackets are provided between the water pressure test bench and the bending force test bench, the front end of the test pipe is installed on a round pipe bench clamp, the front end of the test pipe is connected with a test pump water tank through a pressure test hose, the upper end of the lifting bracket carries the lower end of the test pipe, the lower end of the lifting pressure rod presses down the upper end of the test pipe, the water pressure test bench is provided with a sliding guide rail in the front-to-back direction, and the lower end of the bending force test bench is slidably connected to the sliding guide rail.
[0005] Furthermore, the lower end of the lifting bracket is slidably connected to the sliding guide rail.
[0006] Furthermore, a rectangular mounting frame is provided on the front side of the water pressure test bench, the test pump and the test pump water tank are fixed in the mounting frame in sequence from top to bottom, and the round pipe vise is fixed to the upper end of the mounting frame.
[0007] Furthermore, the test pump and the pressure gauge are respectively installed on the left and right sides of the upper end of the test pump water tank.
[0008] The present invention can simultaneously carry out shell, seal, bending and torsion tests of threaded valves, thereby improving test efficiency; The pipeline of the present invention is divided into two sections, the left port of the left section is provided with a quick pressure interface, and the right port of the right section is provided with a square recess adapted to torque wrenches of different ranges. The left and right sections are respectively equipped with automatic exhaust valves for exhausting gas in the pipeline during shell and sealing tests to avoid interference with the test results. The test bench of the present invention is equipped with a round pipe bench vise, which is suitable for the fixed installation of DN8-DN100 test round pipes and is easy to replace; at least two movable lifting brackets are arranged on the test bench base. When conducting tests other than anti-bending performance, the brackets rise to hold the test pipes, giving the test pipes vertical support force, which is beneficial to the stability of the test system; when conducting anti-bending performance tests, the brackets fall to avoid affecting the bending test; The test bench of the present invention is equipped with a bending force test bench which can move horizontally and axially. For the anti-bending force test of threaded valves of different specifications, the bending force can be accurately applied to the specified position through the horizontal movement, without the need for disassembly and positioning, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0009] Figure 1 It is a schematic diagram of an overall structure of the present invention; Figure 2 It is another overall structural schematic diagram of the present invention.
[0010] Reference numerals: 1 Pipe support, 2 Water pressure test bench, 3 Test pump water tank, 4 Test pump, 5 Pressure gauge, 6 pressure test hose, 7 round pipe vise, 8 lifting bracket, 9 pressure sensor, 10 hydraulic cylinder, 11 lifting pressure rod, 12 exhaust valve, 13 sliding guide rail, 14 bending force test bench, 15 exhaust valve, 16 valve, 17 digital torque wrench, 18 mounting frame, 19 test pipe. DETAILED DESCRIPTION
[0011] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the 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.
[0012] The present invention discloses a threaded valve testing device, such as Figure 1As shown, it includes a pipe support 1 and a water pressure test bench 2. The pipe support 1 stores a test pipe 19. The test pipe 19 is a DN8-DN100 high-strength pipe. Figure 2 As shown, each specification of the test pipe 19 is divided into a left section and a right section. The left port of the left section is provided with a quick pressure interface, and the right port of the right section is provided with a square recess suitable for a digital torque wrench 17. The left section and the right section of the test pipe 19 are respectively equipped with exhaust valves 15.
[0013] A test pump 4 and a test pump water tank 3 are provided on the front side of the hydraulic test bench 2 . The test pump water tank 3 is connected to a pressure gauge 5 . A round pipe bench vise 7 is provided above the test pump 4 and the test pump water tank 3 .
[0014] A rectangular mounting frame 18 is provided on the front side of the hydraulic test bench 2, the test pump 4 and the test pump water tank 3 are fixed in the mounting frame 18 in sequence from top to bottom, the round pipe vise 7 is fixed to the upper end of the mounting frame 18, and the test pump 4 and the pressure gauge 5 are respectively installed on the left and right sides of the upper end of the test pump water tank 3.
[0015] like Figure 1 As shown, a bending force test bench 14 is provided at the rear side of the hydraulic test bench 2, a hydraulic cylinder 10 is provided at the upper end of the bending force test bench 14, a lifting pressure rod 11 is provided on the cylinder shaft of the hydraulic cylinder 10, a pressure sensor 9 is provided at the lower end of the lifting pressure rod 11, at least two lifting brackets 8 are provided between the hydraulic test bench 2 and the bending force test bench 14, a sliding guide rail 13 is provided on the hydraulic test bench 2 along the front-to-back direction, the lower end of the lifting bracket 8 is slidably connected to the sliding guide rail 13, and the lower end of the bending force test bench 14 is slidably connected to the sliding guide rail 13.
[0016] The front end of the test pipe 19 is installed on the round pipe bench vise 7, and the round pipe bench vise 7 is connected to the test pump water tank 3 through the test pressure hose 6. The upper end of the lifting bracket 8 supports the lower end of the test pipe 19, and the lower end of the lifting pressure rod 11 presses down the upper end of the test pipe 19.
[0017] During specific implementation, the corresponding test pipe 19 is selected according to the diameter of the sample valve 16 , the left section of the test pipe 19 is installed on the round pipe vise 7 , and then the valve 16 and the right section of the test pipe 19 are installed in sequence, and the lifting bracket 8 rises to support the test pipe 19 .
[0018] When conducting a shell test, open the exhaust valve 15 switch, partially open the valve 16, start the test pump 4 to pressurize, and after reaching the test pressure, stop the pump and maintain the pressure for a corresponding period of time to check for damage and leakage.
[0019] When conducting a sealing test, the valve 16 is closed and the test pump 4 is started to pressurize. After reaching the test pressure, the pump is stopped and the pressure is maintained for a corresponding period of time to check for damage and leakage.
[0020] When conducting the anti-bending performance test, move the bending force test bench 14 to the specified position (1m from the force point to the center of the test valve), lower the lifting bracket 8 so that the test pipe 19 is not supported, lower the lifting pressure rod 11, and apply the specified bending force to the test pipe 19, and maintain it for 10 seconds; after completion, carry out the shell test and the sealing test respectively to check whether the valve 16 is damaged or leaking.
[0021] When conducting the torsion test, the lifting bracket 8 rises to support the test pipe 19, and the lifting pressure rod 11 rises without contact with the test pipe 19. The digital torque wrench 17 is used to apply the specified torque to the test pipe 19 and maintain it for 10 seconds. After the test, the shell test and the sealing test are carried out respectively to check whether the valve 16 is damaged or leaking.
[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.
Claims
1. A threaded valve testing device, characterized in that: The invention comprises a pipe support (1) and a water pressure test bench (2), wherein the pipe support (1) stores a test pipe (19), the test pipe (19) is divided into a left section and a right section, the left end of the left section of the test pipe (19) is provided with a quick pressure interface, the right end of the right section of the test pipe (19) is provided with a square recess adapted to a digital torque wrench (17), the left section and the right section of the test pipe (19) are respectively equipped with exhaust valves (15), the front side of the water pressure test bench (2) is provided with a test pump (4) and a test pump water tank (3), the test pump water tank (3) is connected to a pressure gauge (5), a round pipe bench clamp (7) is provided above the test pump (4) and the test pump water tank (3), the rear side of the water pressure test bench (2) is provided with a bending force test bench (14), the upper side of the bending force test bench (14) is provided with a pressure gauge (5), and the upper side of the test pump (4) and the test pump water tank (3) is provided with a pressure gauge (5). A hydraulic cylinder (10) is provided at the end thereof, a cylinder shaft of the hydraulic cylinder (10) is provided with a lifting pressure rod (11), a pressure sensor (9) is provided at the lower end of the lifting pressure rod (11), at least two lifting brackets (8) are provided between the water pressure test bench (2) and the bending force test bench (14), the front end of the test pipe (19) is installed on a round pipe bench clamp (7), the front end of the test pipe (19) is connected to the test pump water tank (3) through a pressure test hose (6), the upper end of the lifting bracket (8) supports the lower end of the test pipe (19), the lower end of the lifting pressure rod (11) presses down the upper end of the test pipe (19), a sliding guide rail (13) is provided on the water pressure test bench (2) along the front-to-back direction, and the lower end of the bending force test bench (14) is slidably connected to the sliding guide rail (13).
2. The threaded valve testing device according to claim 1, characterized in that: The lower end of the lifting bracket (8) is slidably connected to the sliding guide rail (13).
3. The threaded valve testing device according to claim 1, characterized in that: A rectangular mounting frame (18) is provided on the front side of the water pressure test bench (2); the test pump (4) and the test pump water tank (3) are fixed in the mounting frame (18) in sequence from top to bottom; and the round pipe vise (7) is fixed to the upper end of the mounting frame (18).
4. The threaded connection valve testing device according to claim 3, characterized in that: The test pump (4) and the pressure gauge (5) are respectively installed on the left and right sides of the upper end of the test pump water tank (3).