Variable-frequency water pressure floating ball valve testing equipment
By designing the variable frequency water pressure float valve test equipment, and using the electrical signal connection between the variable frequency control box and the electronic pressure gauge, the efficient and accurate test of the float valve is achieved, solving the problems of simulating dynamic pressure changes and multi-special float valve testing in the existing technology.
Patent Information
- Application Number
- CN202510697096.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-08-08
AI Technical Summary
The prior art is difficult to simulate the dynamic pressure changes of float valves under actual working conditions, and it is impossible to test float valves of different specifications and connection methods at the same time.
Design a variable frequency water pressure float valve test equipment, including a variable frequency control box, pressure tank, test bench and multiple test pipes. Through the electrical signal connection between the variable frequency water pump and the electronic pressure gauge, dynamic pressure adjustment and simultaneous testing of multiple float valves are achieved.
It realizes efficient and accurate testing of float valves, can simulate dynamic pressure changes under actual working conditions, and supports float valve testing of different specifications and connection methods.
Smart Images
Figure CN120445630A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to a testing device, in particular to a variable frequency water pressure float valve testing device. Background Art
[0002] As a key component for liquid level control, float valves are widely used in municipal water supply, agricultural irrigation, industrial circulating water systems, and other fields. Their operating principle is to automatically open and close the valve by raising and lowering the built-in float ball, maintaining a stable liquid level within the liquid container. Therefore, the performance of the float valve directly affects the safety and reliability of the system. However, due to different actual operating conditions, float valves often need to be tested under different water pressure conditions to verify their sealing, response speed, and durability. However, traditional testing methods simply detect valve leaks and fail to simulate the complex operating conditions encountered in actual use. This means it is difficult to accurately simulate the dynamic pressure changes within the pipeline, and it is impossible to simultaneously test multiple float valves with different specifications and connection methods. Summary of the Invention
[0003] The technical problem to be solved by the present invention is to overcome the defects of the prior art and provide a variable frequency water pressure float valve testing device that can simulate actual working conditions and accurately simulate dynamic pressure changes, and can simultaneously test multiple float valves according to different specifications and different connection methods.
[0004] The technical problem of the present invention is achieved through the following technical solutions: A variable frequency water pressure float valve test device, comprising a variable frequency control box, a pressure tank and a test bench; the pressure tank is provided with a water suction pipe, a branch pipe and a test main pipe, as well as an electronic pressure gauge; a variable frequency water pump and a check valve are installed on the water suction pipe; the test main pipe is provided with a test pressure gauge and a plurality of test branch pipes, the plurality of test branch pipes are simultaneously connected to the test main pipe and fixed on the test bench, each test branch pipe is provided with a detachable joint, and a detachably mounted float valve to be tested is provided on the detachable joint; the variable frequency control box is connected to the electronic pressure gauge and the variable frequency water pump via an electrical signal, and controls the operation of the variable frequency water pump by receiving the pressure value of the electronic pressure gauge, and then performs different water pressure tests on the float valve to be tested. The frequency conversion control box sends a frequency adjustment signal to the frequency conversion water pump and sends a preset pressure value to the electronic pressure gauge; the frequency conversion water pump pumps water according to the frequency adjustment signal and makes the pressure in the pressure tank and the test main pipe reach the preset pressure value; when the pressure values of the test pressure gauge and the electronic pressure gauge are consistent with the preset pressure value, the frequency conversion control box controls the frequency conversion water pump to stop pumping water; the frequency conversion control box dynamically adjusts the output frequency of the frequency conversion water pump by comparing the real-time pressure value of the electronic pressure gauge with the preset pressure value.
[0005] After the variable frequency water pump stops pumping water, the check valve prevents the water in the pressure tank from flowing back to the variable frequency water pump.
[0006] The test bench and the test main pipe are both fixed on the top of a water reservoir, in which circulating water is stored; the water inlet end of the pumping pipe and the end of the branch pipe both extend into the water reservoir.
[0007] The plurality of test branch pipes are fixed horizontally side by side on the test table, and a distance is left between every two adjacent test branch pipes to facilitate installation and removal of the float valve to be tested.
[0008] The water inlet end of the water pumping pipe is provided with a filter screen, and the filter screen is located below the water surface in the water reservoir.
[0009] The detachable joint is a threaded joint.
[0010] Compared with the prior art, the present invention mainly provides a more efficient and accurate float valve testing equipment, the structure of which includes a frequency conversion control box, a pressure tank and a test bench, the pressure tank is provided with a suction pipe, a branch pipe and a test main pipe, and an electronic pressure gauge, and a frequency conversion water pump and a check valve are installed on the suction pipe, the test main pipe is provided with a test pressure gauge and a plurality of test branch pipes, the plurality of test branch pipes are connected to the test main pipe at the same time and fixed on the test bench, each test branch pipe is provided with a detachable joint, the detachable joint is provided with a detachably installed float valve to be tested, and the frequency conversion control box connects the electronic pressure gauge and the frequency conversion water pump through an electrical signal, and controls the operation of the frequency conversion water pump by receiving the pressure value of the electronic pressure gauge; in this way, it is only necessary to send a frequency modulation signal to the frequency conversion water pump through the frequency conversion control box The variable frequency water pump can pump water according to the frequency adjustment signal and make the pressure in the pressure tank and the test main pipe reach the preset pressure value; when the pressure values of the test pressure gauge and the electronic pressure gauge are consistent with the preset pressure values, the variable frequency control box can control the variable frequency water pump to stop pumping water to form a test. In particular, the variable frequency control box can also dynamically adjust the output frequency of the variable frequency water pump by comparing the real-time pressure value of the electronic pressure gauge with the preset pressure value; obviously, this float valve test equipment can simulate actual working conditions and accurately simulate dynamic pressure changes by changing the pressure of the flowing water in the pipeline, and can clamp products according to different specifications and different connection methods, so that float valve products of multiple specifications can be tested. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION
[0012] The embodiments of the present invention will be described in detail below with reference to the above-mentioned drawings.
[0013] like Figure 1As shown, 1. frequency conversion control box, 2. pressure tank, 21. electronic pressure gauge, 3. test bench, 4. suction pipe, 41. frequency conversion water pump, 42. check valve, 43. filter, 5. branch pipe, 6. test main pipe, 61. test pressure gauge, 7. test branch pipe, 71. detachable joint, 72. float valve to be tested, 8. water reservoir.
[0014] A variable frequency water pressure float valve test equipment, such as Figure 1 As shown, it is mainly used for testing threaded or flanged float valves with a water pressure not exceeding 0.9 MPa. Its structure includes a frequency conversion control box 1, a pressure tank 2, a test bench 3 and a water reservoir 8.
[0015] The pressure tank 2 is a columnar tank body, and is provided with a water pumping pipe 4, a branch pipe 5 and a test main pipe 6. An electronic pressure gauge 21 is provided on the top of the pressure tank 2.
[0016] A variable frequency water pump 41 and a check valve 42 are installed on the water pumping pipe 4 , and water can be pumped from the water pumping pipe 4 by the variable frequency water pump 41 .
[0017] The test main pipe 6 is provided with a test pressure gauge 61 and multiple test branch pipes 7. The test pressure gauge 61 only needs to be an ordinary pressure gauge. The multiple test branch pipes 7 are simultaneously connected to the test main pipe 6 and fixed on the test bench 3. Specifically, the test bench 3 and the test main pipe 6 are both fixed on the top of the water reservoir 8, and the multiple test branch pipes 7 are fixed horizontally side by side on the test bench 3. Each test branch pipe 7 is provided with a detachable joint 71 of DN15~100, and a detachable float valve 72 to be tested is provided on the detachable joint. A spacing is left between each two adjacent test branch pipes 7 to facilitate the installation and removal of the float valve 72 to be tested.
[0018] At the same time, each detachable joint 71 is a threaded connection joint, and a sealing ring may be provided inside, so the float valve 72 to be tested can be detachably sealedly connected to the detachable joint 71 through threads or thread-to-flange connections.
[0019] The circulating water stored in the water reservoir 8 can be reused. For example, after the water outlet of the float valve 72 to be tested is opened, water can flow into the water reservoir 8, realizing the flowing water circulation in the equipment, thereby reducing water use costs and wastewater treatment costs, and extending the equipment maintenance cycle, reducing the maintenance frequency and spare parts replacement costs.
[0020] The water inlet end of the pumping pipe 4 and the end of the branch pipe 5 both extend into the water reservoir 8, and the pumping pipe 4 is connected to the water reservoir for pumping water. The branch pipe 5 is in a flowing state during the entire test process. The circulation of flowing water ensures that the pressure in the test equipment is stable and the pressure setting value is always maintained, preventing the variable frequency water pump 41 from being damaged due to heat caused by frequent pumping during the test.
[0021] The water inlet end of the pumping pipe 4 is also provided with a filter screen 43, and the filter screen is located below the water surface in the water reservoir 8. During the pumping process of the pumping pipe 4, impurities and foreign matter in the water can be effectively filtered out, thereby ensuring the cleanliness of the water quality in the test equipment and avoiding damage to the variable frequency water pump 41 during the test.
[0022] The variable frequency control box 1 is connected to the electronic pressure gauge 21 and the variable frequency water pump 41 through an electrical signal, and controls the operation of the variable frequency water pump 41 by receiving the pressure value of the electronic pressure gauge 21. The specific working process is: only the frequency control box 1 needs to send a frequency adjustment signal to the variable frequency water pump 41 and send a preset pressure value to the electronic pressure gauge 21, that is, the variable frequency control box 1 transmits the preset frequency conversion parameters to the electronic pressure gauge 21 and the variable frequency water pump 41 through an electrical signal. After receiving the signal, the variable frequency water pump can pump the circulating water in the water reservoir 8 into the pressure tank 2 according to the frequency adjustment signal, and then The test main pipe 6 diverts water to the test branch pipe 7, so that the pressure in the pressure tank 2 and the test main pipe 6 reaches the preset pressure value, that is, to ensure that the water pressure in the pressure tank 2 is consistent with that in the test main pipe 6; when the pressure values of the test pressure gauge 61 and the electronic pressure gauge 21 are consistent with the preset pressure values, the frequency conversion control box 1 can control the frequency conversion water pump 41 to stop pumping water to form a test, and after the frequency conversion water pump 41 stops pumping water, the check valve 42 can also prevent the water in the pressure tank 2 from flowing back to the frequency conversion water pump 41 to avoid damage to the frequency conversion water pump, so the check valve 42 needs to be installed between the pressure tank 2 and the frequency conversion water pump 41.
[0023] At the same time, during normal testing, the water outlet of the float valve 72 to be tested is opened, the pressure in the pressure tank 2 drops, and the electronic pressure gauge 21 displays a pressure drop. At this time, the electronic pressure gauge will transmit the electrical signal to the frequency conversion control box 1, and then the frequency conversion control box will transmit the electrical signal to the frequency conversion water pump 41 to control the frequency conversion water pump to pump water and increase the pressure to the set pressure. Therefore, the frequency conversion control box 1 can dynamically adjust the output frequency of the frequency conversion water pump 41 by comparing the real-time pressure value of the electronic pressure gauge 21 with the preset pressure value.
[0024] In addition, in actual work, when the pressure value deviation between the test pressure gauge 61 and the electronic pressure gauge 21 is less than ±1%, it is usually considered that the pressure is consistent, and a safety pressure relief valve can also be set on the top of the pressure tank 2. When the pressure exceeds about 10% of the preset pressure value, it can automatically open to relieve pressure to protect the safety of equipment use.
[0025] The present invention simulates actual working conditions and accurately simulates dynamic pressure changes mainly by changing the pressure of the flowing water in the test main pipe. It can also clamp products according to different specifications and different connection methods, thereby testing float valve products of multiple specifications, making the testing process more efficient and accurate.
[0026] The above describes the basic principles and main features of the present invention. Those skilled in the art will understand that the present invention is not limited to the above embodiments. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the claimed invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A variable frequency water pressure float valve testing device, characterized in that: It includes a frequency conversion control box (1), a pressure tank (2) and a test bench (3); The pressure tank (2) is provided with a water pumping pipe (4), a branch pipe (5), a test main pipe (6), and an electronic pressure gauge (21); The pumping pipe (4) is provided with a variable frequency water pump (41) and a check valve (42); the test main pipe (6) is provided with a test pressure gauge (61) and a plurality of test branch pipes (7), the plurality of test branch pipes (7) are simultaneously connected to the test main pipe (6) and fixed on the test bench (3), and each test branch pipe (7) is provided with a detachable joint (71), and a detachably mounted float valve (72) to be tested is provided on the detachable joint; The variable frequency control box (1) is connected to the electronic pressure gauge (21) and the variable frequency water pump (41) through an electrical signal, and controls the operation of the variable frequency water pump (41) by receiving the pressure value of the electronic pressure gauge (21), and then performs different water pressure tests on the float valve (72) to be tested.
2. A variable frequency water pressure float valve testing device according to claim 1, characterized in that The variable frequency control box (1) sends a frequency adjustment signal to the variable frequency water pump (41) and sends a preset pressure value to the electronic pressure gauge (21); the variable frequency water pump (41) pumps water according to the frequency adjustment signal and makes the pressure in the pressure tank (2) and the test main pipe (6) reach the preset pressure value; when the pressure values of the test pressure gauge (61) and the electronic pressure gauge (21) are consistent with the preset pressure value, the variable frequency control box (1) controls the variable frequency water pump (41) to stop pumping water; the variable frequency control box (1) dynamically adjusts the output frequency of the variable frequency water pump (41) by comparing the real-time pressure value of the electronic pressure gauge (21) with the preset pressure value.
3. A variable frequency water pressure float valve testing device according to claim 2, characterized in that After the variable frequency water pump (41) stops pumping water, the check valve (42) prevents the water in the pressure tank (2) from flowing back to the variable frequency water pump (41).
4. The variable frequency water pressure float valve testing equipment according to claim 1, characterized in that It also includes a water reservoir (8); the test bench (3) and the test main pipe (6) are both fixed on the top of the water reservoir (8), and the water reservoir (8) stores circulating water; the water inlet end of the pumping pipe (4) and the end of the branch pipe (5) both extend into the water reservoir (8).
5. A variable frequency water pressure float valve testing device according to claim 4, characterized in that The plurality of test branch pipes (7) are fixed horizontally side by side on the test bench (3), with a spacing left between each two adjacent test branch pipes (7) to facilitate installation and removal of the float valve (72) to be tested.
6. The variable frequency water pressure float valve testing device according to claim 4, characterized in that The water inlet end of the water pumping pipe (4) is provided with a filter screen (43), which is located below the water surface in the water reservoir (8).
7. The variable frequency water pressure float valve testing device according to claim 1, characterized in that The detachable joint (71) is a threaded connection joint.