Test board for testing self-priming of self-priming pump
By designing a self-priming pump test bench with components such as a water storage tank, an air storage chamber, and an air intake chamber, the problems of complex structure and high cost of existing self-priming pump test benches are solved, and low-cost and high-efficiency self-priming pump testing is achieved.
Patent Information
- Application Number
- CN202520320188.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-02-27
AI Technical Summary
The existing self-priming pump test bench has a complex structure and high cost, and urgently needs improvement.
A test bench structure was designed, comprising a water storage tank, an upper pipe, a lower pipe, a gas storage chamber, a suction chamber, and a vacuum pressure gauge. The test of the self-priming pump is achieved by controlling the gas-liquid balance, which simplifies the structure and reduces costs.
It achieves high-quality self-priming pump testing, with a simple structure and low cost, meeting the testing requirements for self-priming pumps.
Smart Images
Figure CN223676531U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to test bench technical field, concretely relates to a test bench of testing self-priming pump self-priming. BACKGROUND
[0002] The working principle of the self-priming pump is that the pump is filled with water (or the pump has water itself) before starting. After starting, the impeller rotates at high speed to make the water in the impeller channel flow to the volute, at which time the inlet forms a vacuum, the water inlet check valve opens, the air in the suction pipe enters the pump, and reaches the outer edge through the impeller channel. At present, the self-priming pump has been widely used in various industries.
[0003] Therefore, the quality of the self-priming pump is very important, and one of the keys to ensuring the quality is the performance test of the self-priming pump. However, the existing self-priming pump self-priming test device has a complex structure and high cost, and needs to be improved. INVENTION CONTENTS
[0004] The utility model solves the technical problem to provide a test bench for testing self-priming pump self-priming, to overcome the defects of the test bench for testing self-priming pump self-priming in the prior art, such as complex structure and high cost.
[0005] To solve the above technical problems, the test bench for testing self-priming pump self-priming of the utility model comprises a self-priming pump for testing; further comprises a water storage tank, the upper end of the water storage tank is communicated with an upper pipe, the lower end of the water storage tank is communicated with a lower pipe, a first water storage level drain hole is arranged on the upper pipe, the lower pipe comprises a first vertical pipe, a first horizontal pipe communicated with the first vertical pipe, a second vertical pipe communicated with the first horizontal pipe, and a second horizontal pipe communicated with the second vertical pipe; a drain hole is arranged on the first horizontal pipe, a second water storage level drain hole is arranged on the second vertical pipe, and a vacuum pressure gauge and a self-priming pump test interface are arranged on the second horizontal pipe.
[0006] Among them, the test bench for testing self-priming pump self-priming further comprises a connecting rod, and the connecting rod connects the upper pipe and the second vertical pipe.
[0007] Among them, the first water storage level drain hole and the second water storage level drain hole are on the same horizontal line.
[0008] Among them, the upper end of the upper pipe and the first water storage level drain hole form an air storage chamber.
[0009] Among them, the distance between the upper end of the upper pipe and the first water storage level drain hole is 100mm.
[0010] Among them, the lower end of the lower pipe and the second water storage level drain hole form an air suction chamber.
[0011] Among them, the length of the air suction chamber is 1000mm.
[0012] The test bench for testing self-priming of a self-priming pump further comprises a test bench support frame supported on the second cross pipe.
[0013] Compared with the prior art, the test bench for testing self-priming of a self-priming pump has the advantages of simple structure, low manufacturing cost and high-quality test of the self-priming pump. BRIEF DESCRIPTION OF DRAWINGS
[0014] Fig. 1 is a front view of the test bench of the utility model;
[0015] Fig. 2 is a first perspective view of the test bench of the utility model;
[0016] Fig. 3 is a second perspective view of the test bench of the utility model. DETAILED DESCRIPTION
[0017] The specific embodiments of the utility model will be further described in detail below in combination with the drawings and examples. The following examples are used to illustrate the utility model but not to limit the scope of the utility model.
[0018] The test bench for testing self-priming of a self-priming pump of the embodiment is shown in Figs. 1-3 Fig. 1, which comprises a self-priming pump (not shown in the figure) for testing. When testing, the self-priming pump is connected to a self-priming pump test interface 1. The test bench further comprises a water storage tank 2, the upper end of which is connected to an upper pipe 3, and the lower end of which is connected to a lower pipe 4. A first water storage level drain hole 5 is arranged on the upper pipe. A gas storage chamber 6 is formed between the top end of the upper pipe and the first water storage level drain hole. The distance between the top end of the upper pipe 7 and the first water storage level drain hole is 100 mm, i.e. a water-gas boundary of the gas storage chamber 8 is formed. The lower pipe comprises a first vertical pipe 9, a first cross pipe 10 connected to the first vertical pipe, a second vertical pipe 11 connected to the first cross pipe, and a second cross pipe 12 connected to the second vertical pipe. A drain hole 13 is arranged on the first cross pipe. A second water storage level drain hole 14 is arranged on the second vertical pipe. An air suction chamber is formed between the one end 15 of the lower pipe and the second water storage level drain hole. The length of the air suction chamber is 1000 mm, i.e. a water-gas boundary of the air suction chamber 16 is formed. The first water storage level drain hole and the second water storage level drain hole are on the same horizontal line. A vacuum pressure gauge 17 and a self-priming pump test interface are arranged on the second cross pipe. The test bench for testing self-priming of a self-priming pump further comprises a connecting rod 18 for strengthening the connection, which connects the upper pipe and the second vertical pipe. The test bench for testing self-priming of a self-priming pump further comprises a test bench support frame 19 supported on the second cross pipe.
[0019] The working principle of the embodiment is as follows: according to the Clapeyron equation, the volume of air will become larger when the pressure of air is reduced, and the relationship is: pressure X volume = constant; the initial pressure of the air storage chamber of the test table is atmospheric pressure, and when the pressure in the system becomes 0.1 atmospheric pressure, the volume of the air storage chamber becomes 10 times of the original volume.
[0020] Volume equivalent replacement: the volume of the original air suction chamber is 9 times of the volume of the air storage chamber; when the volume of the air storage chamber becomes 10 times of the original volume, the water in the water storage chamber will be replaced by the gas, and the water in the water storage chamber will fill the space of the air suction chamber, so as to fill the water into the self-suction pump.
[0021] The original state of the test table is guaranteed as follows: when the test table is filled with water, the drainage hole is closed, the water drainage holes (the first water storage level water drainage hole and the second water storage level water drainage hole) at the water-gas demarcation position of the air suction chamber and the water-gas demarcation position of the air storage chamber are opened, and the water drainage holes are kept open until water flows out, so as to ensure that the part below the water drainage holes is filled with water, and the part above the water drainage holes is filled with gas, and the water drainage holes are closed.
[0022] The relationship between the test working condition and the field working condition is as follows: the test working condition is recorded, and the vacuum value and the time corresponding to the vacuum value are recorded; the relationship with the field is as follows: the vacuum value can be directly used in the field, and the time corresponding to the vacuum value should know the volume of the air suction chamber in the field, and the self-suction time in the field can be obtained by dividing the volume of the field by the volume of the test air suction chamber and then multiplying the time.
[0023] The test table support frame is used for placement and fixation when the embodiment is used; the original state of the test table needs to be guaranteed before the test (the original state is that the water in the test table starts to flow out from the water drainage hole, at this time, the air suction chamber and the air storage chamber are filled with standard atmospheric pressure gas, and the water storage chamber is filled with standard atmospheric pressure liquid); when working, the self-suction pump is installed at the self-suction pump test interface, the water drainage hole and the drainage hole are closed, at the beginning, the self-suction pump sucks the gas in the air suction chamber, the gas pressure in the air suction chamber decreases, the gas pressure in the air storage chamber is greater than the pressure in the air suction chamber, so as to force the liquid in the water storage chamber to flow into the air suction chamber until the pressure is balanced, the gas in the air storage chamber is caused to decrease due to the increase in volume, and due to the principle of force, the pressure in the air suction chamber decreases, and the test can be completed by recording the value of the vacuum pressure table and the self-suction time of the self-suction pump.
[0024] The embodiment not only has a simple structure and low manufacturing cost, but also can complete the test task of the self-suction pump with high quality.
[0025] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary technical personnel in the technical field, some improvements and decorations can be made without departing from the technical principles of the present application, and these improvements and decorations should also be regarded as the protection range of the present application.
Claims
1. A test bench for testing the self-priming of a self-priming pump, comprising a self-priming pump for testing; characterized in that: The water storage tank is connected with the upper pipe at the upper end and with the lower pipe at the lower end, the upper pipe is provided with a first water storage level drain hole, the lower pipe includes a first vertical pipe, a first horizontal pipe connected with the first vertical pipe, a second vertical pipe connected with the first horizontal pipe, and a second horizontal pipe connected with the second vertical pipe, the first horizontal pipe is provided with a drain hole, the second vertical pipe is provided with a second water storage level drain hole, and the second horizontal pipe is provided with a vacuum pressure gauge and a self-priming pump test interface.
2. The test bench for testing the self-priming of a self-priming pump according to claim 1, characterized in that: The test bench for testing the self-priming of the self-priming pump further includes a connecting rod connected with the upper pipe and the second vertical pipe.
3. Test bench for testing the self-priming of a self-priming pump according to claim 1 or 2, characterized in that: The first water storage level drain hole and the second water storage level drain hole are on the same horizontal line.
4. The test bench for testing the self-priming of a self-priming pump according to claim 1, characterized in that: An air storage chamber is formed between the top end of the upper pipe and the first water storage level drain hole.
5. The test bench for testing the self-priming of a self-priming pump according to claim 4, characterized in that: The distance between the top end of the upper pipe and the first water storage level drain hole is 100 mm.
6. The test stand for testing the self-priming of a self-priming pump according to claim 1, characterized in that An air suction chamber is formed between one end of the lower pipe and the second water storage level drain hole.
7. The test bench for testing the self-priming of a self-priming pump according to claim 6, characterized in that: The length of the air suction chamber is 1000 mm.
8. The test stand for testing the self-priming of a self-priming pump according to claim 1, characterized in that The test bench for testing the self-priming of the self-priming pump further includes a test bench support frame supported on the second horizontal pipe.