CN212429168U - Water pump lift flow testing device - Google Patents
Water pump lift flow testing device Download PDFInfo
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- CN212429168U CN212429168U CN202020728079.0U CN202020728079U CN212429168U CN 212429168 U CN212429168 U CN 212429168U CN 202020728079 U CN202020728079 U CN 202020728079U CN 212429168 U CN212429168 U CN 212429168U
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Abstract
The utility model discloses a water pump lift flow testing arrangement relates to water pump detection technology field, is by water storage component, moisturizing subassembly, the water pump 13 that awaits measuring, liquid level detection subassembly, automatically controlled subassembly 16 and liquid level control subassembly and constitute. The liquid level detection assembly is composed of a liquid level container 19 and a liquid level sensor component, wherein the liquid level sensor component is composed of more than one liquid level sensor 22, and the liquid level sensor 22 is composed of a liquid level sensor probe 20 and a liquid level sensing signal wire 23. The device has the characteristics of convenience in operation, high measurement precision, capability of being used for testing small-flow water pumps and the like, is suitable for testing the lift flow of the water pumps with various specifications, and is particularly suitable for testing the small-flow water pumps with various specifications.
Description
Technical Field
The utility model relates to a water pump detects technical field, especially a water pump lift flow test device.
Background
In the prior art, a flowmeter is generally adopted for testing the flow of the water pump under the specified lift, but the small-flow small-caliber high-precision flowmeter on the market at present is difficult to select and has high cost, so that a proper flowmeter is difficult to purchase. Meanwhile, the high-precision flowmeter has corresponding requirements on the installation position, 5-10 times of pipe diameter straight pipe sections are required to be arranged at the front inlet and the rear outlet, and the installation requirements of the flowmeter cannot be met due to the small lift of the test water pump. In addition, the pressure loss of the general flowmeter is large, the ratio of the pressure loss to the outlet pressure of the test pump is large, the measured flow error is large, and the real flow value cannot be reflected. By combining the above points, the flow meter on the market at present is difficult to meet the test of the small-flow small-lift pump.
The invention discloses a cavitation erosion prevention closed flow lift performance testing device for a pump, which is disclosed by Chinese invention patent application (application number is 201610598572.3), and comprises a liquid inlet pipeline, a liquid outlet pipeline, a liquid storage tank, an exhaust pipeline, a booster pipeline and a booster pump; an exhaust port in the center of the front end sealing head of the liquid storage tank is connected with an exhaust pipeline; the inlet and the outlet of the pump to be tested are respectively connected with the bottoms of the side walls of the front end and the rear end of the liquid storage tank through pipelines; a pressurizing port at the top of the side wall at the rear end of the liquid storage tank is connected with a pressurizing pump through a pressurizing pipeline; an inlet pressure tapping pipe and an outlet pressure tapping pipe are respectively connected to the liquid outlet pipeline and the liquid inlet pipeline which are close to the two ends of the pump to be tested.
Another chinese patent (application No. 201620260014.1) discloses a "water pump efficiency, flow rate and lift detection system", which includes a water pump, a frequency converter and a controller. The frequency converter is connected with the water pump and is used for carrying out frequency conversion adjustment on the water pump; and the controller is connected with the frequency converter and used for acquiring the output power and the output frequency of the frequency converter and calculating the flow, the lift and the efficiency of the water pump according to the output power and the output frequency.
Also, a "closed flow lift performance testing device for a pump" disclosed in chinese patent application No. 201620804578.7 includes a liquid inlet pipe, a liquid outlet pipe, a liquid storage tank, an exhaust pipe, a booster pipe, and a booster pump; an exhaust port in the center of the front end sealing head of the liquid storage tank is connected with an exhaust pipeline; the inlet and the outlet of the pump to be tested are respectively connected with the bottoms of the side walls of the front end and the rear end of the liquid storage tank through pipelines; a pressurizing port at the top of the side wall at the rear end of the liquid storage tank is connected with a pressurizing pump through a pressurizing pipeline; an inlet pressure tapping pipe and an outlet pressure tapping pipe are respectively connected to the liquid outlet pipeline and the liquid inlet pipeline which are close to the two ends of the pump to be tested.
Disclosure of Invention
Not enough to prior art exists, the utility model aims to provide a convenient operation, measurement accuracy height, and can be used to the device of low discharge water pump test.
In order to achieve the above object, the utility model discloses the technical scheme who takes designs a water pump lift flow test device: the device comprises a water storage component, a water pump to be detected 13, a liquid level detection component, an electric control component 16 and a liquid level control component, wherein the water pump to be detected 13 is respectively connected with the water storage component and the liquid level detection component through water pipes; the liquid level detection assembly comprises a liquid level container 19 and a liquid level sensor component arranged on the liquid level container 19, and the output end of the water pump 13 to be detected and the liquid level control assembly are respectively connected with the upper part and the lower part of the liquid level container 19; the liquid level sensor component comprises more than one liquid level sensor 22, the liquid level sensor 22 comprises a liquid level sensor probe 20 and a liquid level sensing signal line 23, the liquid level sensor probe 20 is arranged in the inner cavity of the liquid level container 19, and the liquid level sensing signal line 23 is connected with the electronic control assembly 16; and the electric control assembly 16 is respectively connected with the water pump to be detected 13, the liquid level detection assembly and the liquid level control assembly through electric control lines.
Still including the moisturizing subassembly that comprises moisturizing case 1, moisturizing pump 5 and moisturizing inlet tube 2, moisturizing outlet pipe 7, moisturizing inlet tube 2's one end is arranged in moisturizing case 1, the moisturizing pump 5 is connected to the other end, moisturizing pump 5, the water storage component is connected to the other end is connected to the one end of moisturizing outlet pipe 7, and moisturizing pump 5 and automatically controlled subassembly 16 are connected respectively to the both ends of moisturizing control line 6.
The water storage component comprises a water storage tank 8, an overflow plate 11 and an overflow drain pipe 4; the overflow plate 11 is arranged in the inner cavity of the water storage tank 8 and divides the water storage tank 8 into a water storage cavity and an overflow cavity; the upper end of the overflow drain pipe 4 is arranged on the bottom surface of the overflow cavity, and the lower end of the overflow drain pipe is led into the inner cavity of the water replenishing tank 1.
The liquid level sensor component comprises three liquid level sensors 22, and liquid level sensor probes 20 of the three liquid level sensors 22 are respectively arranged at the high, middle and low parts of the inner cavity of the liquid level container 19.
The liquid level control assembly comprises a liquid level control valve 10, a liquid level control drainage water inlet pipe 17 and a liquid level control drainage water outlet pipe 3, wherein the water inlet end and the water outlet end of the liquid level control valve 10 are respectively connected with one end of the liquid level control drainage water inlet pipe 17 and one end of the liquid level control drainage water outlet pipe 3, and the other ends of the liquid level control drainage water inlet pipe 17 and the liquid level control drainage water outlet pipe 3 are respectively connected with the lower part of the inner cavity of the liquid level container 19 and the inner cavity of the water replenishing tank.
The electric control assembly 16 comprises an electric control system, a PLC (programmable logic controller) and a display screen 18, the PLC is respectively connected with the electric control system, the display screen 18 and a liquid level sensing signal line 23, and the electric control system is also respectively connected with a water pump 13 to be detected, a water replenishing pump 5, a liquid level control valve 10 and a liquid level sensor 22.
The utility model discloses a water pump lift flow testing arrangement, its theory of operation is through measuring the volume of water in the unit interval, and then the indirect average flow that calculates. A liquid level sensor (cross-sectional area S) is incorporated in a container (liquid level container 19) having a constant cross section, and the volume of water per unit time is obtained by detecting the change in the liquid level by the sensor.
The flow calculation formula is as follows: q ═ S × H)/T; wherein:
q is volume flow rate ml/min;
s: cross sectional area of flow cm2；
H: the height of the liquid level is cm;
t: and (5) time min.
The specific test method comprises the following steps:
firstly, setting test conditions, the lift of the water pump, the height of the test liquid level, the caliber of the pipeline and other technical parameters according to the technical parameters of the test water pump.
Secondly, connect the test tube way, start the power, the water pump begins to operate.
And thirdly, processing the data.
When the water pump operates stably, the liquid level sensor starts to capture liquid level height change data, the liquid level sensor measures the corresponding relation between the liquid level height and the time, and then the corresponding relation between the volume of the discharged water and the time can be calculated, and therefore the average flow of the water pump is calculated. The liquid level sensor can detect the relation between the liquid level and the time in real time through the PLC, and the average flow within a certain time can be obtained.
Therefore, the water pump lift flow testing device of the utility model has the advantages of convenient operation, low cost, high measuring precision and capability of realizing automatic measurement; meanwhile, for small-flow water pumps with different technical parameters, the corresponding testing device can be designed by adopting the measuring principle, so that the method is suitable for testing the small-flow water pumps with various specifications.
Drawings
Fig. 1 is a schematic diagram of the present invention.
In the figure: the device comprises a water replenishing tank 1, a water replenishing inlet pipe 2, a liquid level control drainage outlet pipe 3, an overflow drainage pipe 4, a water replenishing pump 5, a water replenishing control line 6, a water replenishing outlet pipe 7, a water storage tank 8, a water pump inlet pipe to be detected 9, a liquid level control valve 10, an overflow plate 11, a liquid level control valve electric control line 12, a water pump to be detected 13, a water pump electric control line to be detected 14, a water pump outlet pipe to be detected 15, an electric control component 16, a liquid level control drainage inlet pipe 17, a display screen 18, a liquid level container 19, a liquid level sensor probe 20, a liquid level sensor electric control line 21, a liquid level sensor 22 and a liquid level sensing signal line 23.
Detailed Description
The present invention will be further described with reference to the following examples. The following description is given by way of example, but the scope of the invention is not limited thereto.
The water pump lift flow testing device of this embodiment is by water storage component, moisturizing subassembly, the water pump 13 that awaits measuring, liquid level detection subassembly, automatically controlled subassembly 16 and liquid level control subassembly and constitute. The liquid level detection assembly is composed of a liquid level container 19 and a liquid level sensor component, wherein the liquid level sensor component is composed of more than one liquid level sensor 22, and the liquid level sensor 22 is composed of a liquid level sensor probe 20 and a liquid level sensing signal wire 23.
The electric control assembly 16 is composed of an electric control system, a PLC controller and a display screen 18, wherein the PLC controller is respectively connected with the electric control system, the display screen 18 and a liquid level sensing signal line 23.
The water supplementing assembly consists of a water supplementing tank 1, a water supplementing pump 5, a water supplementing water inlet pipe 2 and a water supplementing water outlet pipe 7; one end of the water replenishing inlet pipe 2 is arranged in the water replenishing tank 1, the other end of the water replenishing inlet pipe is connected with the water replenishing pump 5, one end of the water replenishing outlet pipe 7 is connected with the water replenishing pump 5, the other end of the water replenishing outlet pipe is connected with the water storage component, and two ends of the water replenishing control line 6 are respectively connected with the water replenishing pump 5 and an electric control system of the electric control component 16.
The water storage component comprises a water storage tank 8, an overflow plate 11 and an overflow drain pipe 4; the overflow plate 11 is arranged in the inner cavity of the water storage tank 8 and divides the water storage tank 8 into a water storage cavity on the left side and an overflow cavity on the right side; the height of the overflow plate 11 controls the liquid level height of the water storage cavity; the upper end of the overflow drain pipe 4 is arranged on the bottom surface of the overflow cavity, and the lower end of the overflow drain pipe is led into the inner cavity of the water replenishing tank 1.
The water inlet end of the water pump 13 to be tested is connected with one end of the water inlet pipe 9 of the water pump to be tested, the other end of the water inlet pipe 9 of the water pump to be tested is arranged in the inner cavity of the water storage tank 8, the water outlet end of the water pump 13 to be tested is connected with one end of the water outlet pipe 15 of the water pump to be tested, and the other end of the water outlet pipe 15 of the water pump to; two ends of the water pump electric control line 14 to be tested are respectively connected with the water pump 13 to be tested and the electric control system of the electric control assembly 16.
The liquid level sensor component is composed of three (two or four or other quantity, in this example, three) liquid level sensors 22, liquid level sensor probes 20 of the three liquid level sensors 22 are respectively arranged at high, middle and low positions (respectively corresponding to high, middle and low three water levels) in an inner cavity of the liquid level container 19, liquid level sensing signal wires 23 of the three liquid level sensors 22 are connected with a PLC controller of the electronic control component 16, and liquid level sensor electric control wires 21 of the three liquid level sensors 22 are connected with an electronic control system of the electronic control component 16.
The liquid level control assembly is composed of a liquid level control valve 10, a liquid level control drainage water inlet pipe 17 and a liquid level control drainage water outlet pipe 3, the water inlet end and the water outlet end of the liquid level control valve 10 are respectively connected with one end of the liquid level control drainage water inlet pipe 17 and one end of the liquid level control drainage water outlet pipe 3, and the other ends of the liquid level control drainage water inlet pipe 17 and the liquid level control drainage water outlet pipe 3 are respectively connected with the lower part of the inner cavity of the liquid level container 19 and the inner cavity of the water; two ends of the liquid level control valve electric control line 12 are respectively connected with the electric control system of the electric control assembly 16 and the liquid level control valve 10.
Before the water storage tank 8 is filled with water, the water inlet end and the water outlet end of the water pump 13 to be tested are connected respectively, then, a starting button on the electric control component 16 is pressed, the testing device starts to operate, the liquid level detection component firstly carries out self detection, the water level height in the liquid level container 19 is detected, if the water level height is lower than the low water level, the liquid level control valve 10 is closed, the water pump 13 to be tested pumps water, when the water level reaches the middle water level, data acquisition is started, when the water level reaches the high water level, the data acquisition is stopped, the power supply of the water pump 13 to be tested and the power supply of the liquid level sensor 22 are cut off, and meanwhile, the liquid level control valve. The collected data is processed in the background by the PLC controller, and the processed data is displayed on the display screen 18.
In the test process, when the water level height exceeds the set water level height, the liquid level control valve 10 is opened to drain water, and when the water level is drained to be lower than the set water level, the liquid level control valve 10 is automatically closed to start the test. The water in the water replenishing tank 1 is continuously pumped into the water storage tank 8 by the water replenishing pump 5, and redundant water in the water storage tank 8 overflows from the overflow plate 11 and flows back into the water replenishing tank 1 through the overflow drain pipe 4.
The utility model discloses a water pump lift flow test device is applicable to the lift flow test of multiple specification water pump, is particularly useful for the small discharge water pump test of various specifications.
Claims (6)
1. The utility model provides a water pump lift flow testing arrangement which characterized in that: the device comprises a water storage component, a water pump (13) to be detected, a liquid level detection component, an electric control component (16) and a liquid level control component, wherein the water pump (13) to be detected is respectively connected with the water storage component and the liquid level detection component through water pipes; the liquid level detection assembly comprises a liquid level container (19) and a liquid level sensor component arranged on the liquid level container, and the output end of the water pump (13) to be detected and the liquid level control assembly are respectively connected with the upper part and the lower part of the liquid level container (19); the liquid level sensor component comprises more than one liquid level sensor (22), the liquid level sensor (22) comprises a liquid level sensor probe (20) and a liquid level sensing signal line (23), the liquid level sensor probe (20) is arranged in an inner cavity of the liquid level container (19), and the liquid level sensing signal line (23) is connected with the electronic control assembly (16); the electric control assembly (16) is respectively connected with the water pump (13) to be detected, the liquid level detection assembly and the liquid level control assembly through electric control lines.
2. The water pump head flow testing device of claim 1, characterized in that: still including the moisturizing subassembly that constitutes by moisturizing case (1), moisturizing pump (5) and moisturizing inlet tube (2), moisturizing outlet pipe (7), moisturizing pump (5) is connected to the one end of moisturizing inlet tube (2) in arranging moisturizing case (1), the other end in, water storage component is connected to the one end of moisturizing outlet pipe (7) connection moisturizing pump (5), the other end, and moisturizing pump (5) and automatically controlled subassembly (16) are connected respectively at the both ends of moisturizing control line (6).
3. The water pump head flow test device according to claim 1 or 2, characterized in that: the water storage component comprises a water storage tank (8), an overflow plate (11) and an overflow drain pipe (4); the overflow plate (11) is arranged in the inner cavity of the water storage tank (8) and divides the water storage tank (8) into a water storage cavity and an overflow cavity; the upper end of the overflow drain pipe (4) is arranged on the bottom surface of the overflow cavity, and the lower end of the overflow drain pipe is led into the inner cavity of the water replenishing tank (1).
4. A water pump head flow test device according to claim 3, characterized in that: the liquid level sensor component comprises three liquid level sensors (22), and liquid level sensor probes (20) of the three liquid level sensors (22) are respectively arranged at the high, middle and low parts of the inner cavity of the liquid level container (19).
5. The water pump head flow testing device of claim 4, characterized in that: the liquid level control assembly comprises a liquid level control valve (10), a liquid level control drainage water inlet pipe (17) and a liquid level control drainage water outlet pipe (3), wherein the water inlet end and the water outlet end of the liquid level control valve (10) are respectively connected with one end of the liquid level control drainage water inlet pipe (17) and one end of the liquid level control drainage water outlet pipe (3), and the other ends of the liquid level control drainage water inlet pipe (17) and the liquid level control drainage water outlet pipe (3) are respectively connected with the lower part of an inner cavity of a liquid level container (19) and the inner cavity of a water replenishing tank (.
6. The water pump head flow testing device of claim 5, characterized in that: the electric control assembly (16) comprises an electric control system, a PLC (programmable logic controller) and a display screen (18), the PLC is respectively connected with the electric control system, the display screen (18) and a liquid level sensing signal line (23), and the electric control system is also respectively connected with a water pump (13) to be detected, a water replenishing pump (5), a liquid level control valve (10) and a liquid level sensor (22).
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| CN202020728079.0U CN212429168U (en) | 2020-05-06 | 2020-05-06 | Water pump lift flow testing device |
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| CN202020728079.0U CN212429168U (en) | 2020-05-06 | 2020-05-06 | Water pump lift flow testing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175437A (en) * | 2021-05-08 | 2021-07-27 | 格力大松（宿迁）生活电器有限公司 | Water pump lift testing device and water pump lift testing method |
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- 2020-05-06 CN CN202020728079.0U patent/CN212429168U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113175437A (en) * | 2021-05-08 | 2021-07-27 | 格力大松（宿迁）生活电器有限公司 | Water pump lift testing device and water pump lift testing method |
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