CN209743128U - Automatic testing device for improving testing precision of water pump - Google Patents
Automatic testing device for improving testing precision of water pump Download PDFInfo
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- CN209743128U CN209743128U CN201821517708.4U CN201821517708U CN209743128U CN 209743128 U CN209743128 U CN 209743128U CN 201821517708 U CN201821517708 U CN 201821517708U CN 209743128 U CN209743128 U CN 209743128U
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Abstract
the application discloses an automatic testing arrangement for improving water pump measuring accuracy relates to water pump test equipment. An automatic test apparatus comprising: the system comprises a water pump test pool, a motor, an inlet pressure measuring branch, an outlet pressure measuring branch, a soft start cabinet, an electrical parameter measuring instrument, a rotating speed sensor, a temperature transmitter and a data acquisition system. The outlet pressure tap branch includes an outlet pressure transmitter assembly having different measurement ranges. The data acquisition system is configured to automatically acquire various data required by the test of the tested pump under the condition that the test data of the tested pump is stable, the stability of the data can be improved, and the test efficiency is further improved. This application passes through data acquisition system through import pressure measurement branch road automatically regulated flow, so can reduce experimental operating time long, improve work efficiency. This application corresponds the tested pump of different lifts through the outlet pressure transmitter subassembly that has different measuring range, has consequently improved the measuring accuracy of tested pump.
Description
Technical Field
The application relates to the field of water pump testing, in particular to an automatic testing device for improving testing precision of a water pump.
background
The water pump test is an important link of water pump production and is an effective means for testing the processing, manufacturing, assembling and performance quality of the water pump. The existing water pump test bed controls the flow of the water pump by adjusting a valve to complete the performance test of the water pump. The enterprise realizes flow control through valve adjustment workman manual regulation gate valve mostly, and data acquisition personnel judge whether stable through the naked eye according to self experience, behind the flow stability, gathers the test parameter of water pump.
By the constraint of the conditions, the existing water pump test needs a large number of workers, and the valve adjusting workers and the data acquisition personnel need to be matched to complete the test of the water pump, so that the test operation time is long, and the efficiency is low. In addition, the existing test process needs manual operation and naked eye judgment many times, so that the requirement on the professional performance of operators is high, and the stability of the acquired data is not easy to judge.
In addition, because the lift range of various water pumps is different, for example: some pump lifts are only several meters, some pump lifts are hundreds of meters, and some pump lifts are thousands of meters, so that the pressure measurement ranges of the water pumps are different. In practice, workers often choose a pressure transmitter with a larger measurement range to satisfy all water pump tests. For example: all water pumps are measured by a pressure transmitter of 10Mpa, which is suitable for measuring water pumps with a head of about 900 m, but when measuring water pumps with a low head, for example, when measuring water pumps with a head of 100 m, a head of 200 m or a head of several m, the pressure transmitter may cause a problem of low accuracy of the water pump measurement.
SUMMERY OF THE UTILITY MODEL
It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.
the application provides an automatic testing arrangement for improving water pump test accuracy for detect the performance of being examined the pump, include:
the water pump test pool is used for storing test water;
The motor is connected with the tested pump and used for providing power for the tested pump;
One end of the inlet pressure measuring branch is communicated with the water pump test pool, the other end of the inlet pressure measuring branch is used for being connected with an inlet of the tested pump, conveying water in the water pump test pool to the tested pump, communicating or blocking the water in the water pump test pool, and testing the inlet pressure of the tested pump;
The outlet pressure measuring branch circuit is used for connecting an outlet of the tested pump, conveying water discharged by the tested pump to the water pump test pool, adjusting the flow of the tested pump and measuring the outlet pressure of the tested pump, and comprises an outlet pressure transmitter assembly, wherein the outlet pressure transmitter assembly has different measuring ranges so as to correspond to tested pumps with different lifts;
the soft starting cabinet is connected with the motor and is used for soft starting the motor;
An electrical parameter measuring instrument connected with the motor and configured to measure voltage, current, power and power frequency of the motor;
A rotation speed sensor installed at the motor for measuring a rotation speed of the motor;
the temperature transmitter is arranged in the water pump test pool and used for measuring water temperature; and
and the data acquisition system is connected with the inlet pressure measuring branch, the outlet pressure measuring branch, the electrical parameter measuring instrument, the rotating speed sensor and the temperature transmitter and is configured to acquire various data required by the test of the tested pump under the condition of judging that the test data of the tested pump is stable.
optionally, the inlet pressure branch comprises:
One end of the inlet pressure measuring pipe is communicated with the water pump test pool, and the other end of the inlet pressure measuring pipe is connected with an inlet of the tested pump and used for conveying water in the water pump test pool to the tested pump;
the inlet gate valve is arranged at the inlet pressure measuring pipe and used for communicating or blocking water in the water pump test pool; and
And the inlet pressure transmitter is arranged at the inlet pressure measuring pipe and used for measuring the inlet pressure of the tested pump.
optionally, the inlet gate valve and the inlet pressure transmitter are sequentially installed at the inlet pressure measuring pipe according to the water inlet direction of the tested pump.
optionally, the outlet pressure branch comprises:
one end of the outlet pressure measuring pipe is connected to the water pump test pool, the other end of the outlet pressure measuring pipe is connected with the outlet of the tested pump and used for conveying water discharged by the tested pump to the water pump test pool,
the electric regulating valve is arranged at the outlet pressure measuring pipe and is used for regulating the flow of the pump to be tested;
The electromagnetic flowmeter is arranged at the outlet pressure measuring pipe and used for measuring the flow of the pump to be tested; and
the outlet pressure transmitter assembly is a plurality of outlet pressure transmitters connected in parallel, the outlet pressure transmitters are arranged at the outlet pressure measuring pipe in parallel and used for measuring the outlet pressure of the tested pump in different lifts, and each outlet pressure transmitter in the outlet pressure transmitters has different measuring ranges so as to correspond to the tested pump with different lifts.
Optionally, the outlet pressure transmitter, the electromagnetic flowmeter and the electric control valve are installed at the outlet piezometer tube in sequence according to the drainage direction of the tested pump.
Optionally, the inlet pressure measuring branch comprises an inlet pressure measuring pipe, and an inlet gate valve and an inlet pressure transmitter which are installed at the inlet pressure measuring pipe;
the outlet pressure measuring branch comprises an outlet pressure measuring pipe, an electric regulating valve, an electromagnetic flowmeter and an outlet pressure transmitter, wherein the electric regulating valve, the electromagnetic flowmeter and the outlet pressure transmitter are arranged at the outlet pressure measuring pipe;
The data acquisition system includes:
A PLC controller connected to the electric control valve, the electromagnetic flow meter, the outlet pressure transmitter, the inlet gate valve, the inlet pressure transmitter, and the temperature transmitter, configured to control opening or closing of the electric control valve and the inlet gate valve and to adjust a flow rate of the electric control valve, and configured to receive values of the measured flow rate, the measured outlet pressure, the measured inlet pressure, and the measured water temperature; and
The upper computer is connected with the electrical parameter measuring instrument, the rotating speed sensor and the PLC and is configured to collect values of voltage, current, power supply frequency, rotating speed, flow, outlet pressure, inlet pressure and water temperature under the condition of stable data;
the electrical parameter measuring instrument, the rotating speed sensor and the PLC are connected with the upper computer through corresponding communication interfaces so as to transmit data.
optionally, each communication interface is a 485 communication interface.
Optionally, the automatic testing device further comprises a testing platform for mounting the tested pump and the motor.
The automatic testing device for improving the testing precision of the water pump automatically adjusts the flow through the inlet pressure measuring branch circuit through the data acquisition system, and does not need a valve to adjust a manual gate valve of a worker, so that the automatic testing device for improving the testing precision of the water pump can reduce the testing operation time and improve the working efficiency. This application passes through the data acquisition system and gathers the required various data of the experiment of the pump under the stable circumstances of the experimental data of judging the pump under test, because this application need not data acquisition personnel and judges whether stable according to self experience naked eye, consequently uses this application can improve the stability of data, can also further improve test efficiency. This application corresponds through the outlet pressure transmitter subassembly that has different measuring range the different lifts of being tried the pump, consequently improved the measuring accuracy of being tried the pump.
The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic installation diagram of an automatic test device for improving water pump test accuracy according to one embodiment of the present application;
fig. 2 is a schematic block diagram of the data acquisition system of fig. 1.
The symbols in the drawings represent the following meanings:
100 an automatic test device for a test device,
1 water pump test pool, 2 temperature transmitter, 3 water return pipe, 4 inlet gate valve, 5 inlet pressure measuring pipe, 690 degree elbow, 7 electric control valve, 8 electromagnetic flowmeter, 9 soft start cabinet, 10 electric parameter measuring instrument, 11 outlet pressure transmitter component, 12 outlet pressure measuring pipe, 13 inlet pressure transmitter, 14 tested pump, 15 rotation speed sensor, 16 motor, 17 test platform, 18 data acquisition system, 19PLC controller, 20 upper computer,
111 a first outlet pressure transmitter, 112 a second outlet pressure transmitter, 113 a third outlet pressure transmitter, 114 a fourth outlet pressure transmitter,
the pressure measuring branch is arranged at the inlet A and the pressure measuring branch is arranged at the outlet B.
Detailed Description
FIG. 1 is a schematic installation diagram of an automatic testing device for improving testing accuracy of a water pump according to one embodiment of the application. Fig. 2 is a schematic block diagram of the data acquisition system of fig. 1. An automatic test apparatus 100 for improving the accuracy of water pump testing, for testing the performance of a pump 14 under test, may generally comprise: the device comprises a water pump test pool 1, a motor 16, an inlet pressure measuring branch A, an outlet pressure measuring branch B, a soft start cabinet 9, an electrical parameter measuring instrument 10, a rotating speed sensor 15, a temperature transmitter 2 and a data acquisition system 18. Wherein, the water pump test pool 1 is used for storing water for test. The motor 16 is used for connecting with the tested pump 14 and providing power for the tested pump 14. One end of the inlet pressure measuring branch A is communicated with the water pump test pool 1, and the other end of the inlet pressure measuring branch A is used for being connected with an inlet of the tested pump 14, conveying water in the water pump test pool 1 to the tested pump 14, communicating or blocking the water in the water pump test pool 1, and testing inlet pressure of the tested pump 14. One end of the outlet pressure measuring branch B is connected to the water pump test cell 1, and the other end of the outlet pressure measuring branch B is used for connecting an outlet of the tested pump 14, conveying water discharged by the tested pump 14 to the water pump test cell 1, adjusting the flow rate of the tested pump 14, and measuring the outlet pressure of the tested pump 14. The outlet pressure measuring branch B comprises an outlet pressure transmitter assembly 11, wherein the outlet pressure transmitter assembly 11 has different measuring ranges to correspond to the tested pumps 14 with different lifts, and further the testing precision of the tested pumps 14 is improved. The soft start cabinet 9 is connected with the motor 16 and is used for soft starting the motor 16. An electrical parameter measuring instrument 10 is connected to the motor 16 and is configured to measure the voltage, current, power and power frequency of the motor 16. A rotation speed sensor 15 is installed at the motor 16 for measuring a rotation speed of the motor 16. And the temperature transmitter 2 is arranged in the water pump test pool 1 and is used for measuring the water temperature. The data acquisition system 18 is connected to the inlet pressure measurement branch a, the outlet pressure measurement branch B, the electrical parameter measuring instrument 10, the rotation speed sensor 15, and the temperature transmitter 2, and is configured to acquire various data required for the test of the pump under test 14 when it is determined that the test data of the pump under test 14 is stable.
In the test process of the tested pump 14, the inlet pressure measuring branch A and the outlet pressure measuring branch B are connected with the tested pump 14, the tested pump 14 is connected with the motor 16, and the motor 16 is connected with the soft start cabinet 9. The water pump test software in the data acquisition system 18 is turned on to begin testing of the pump 14 under test. After a test start button of the data acquisition system 18 is clicked, the data acquisition system 18 controls the work of the inlet pressure measuring branch A, the data acquisition system 18 automatically judges whether the test data of the tested pump 14 is stable, and if the test data is stable and meets the requirements of the water pump test standard, various data required by the test of the tested pump 14 are automatically acquired.
the automatic testing device 100 for improving the testing precision of the water pump automatically adjusts the flow through the inlet pressure measuring branch circuit A through the data acquisition system 18, and does not need a valve to adjust a manual gate valve of a worker, so that the testing operation time can be shortened, and the working efficiency is improved. This application passes through data acquisition system 18 and gathers the required various data of the experiment of being tried pump 14 under the stable condition of the experimental data of judging being tried pump 14, because this application need not data acquisition personnel and judge whether stable according to self experience naked eye, consequently use this application can improve the stability of data, can also further improve test efficiency. This application corresponds the pump 14 under test of different lifts through the export pressure transmitter subassembly that has different measuring range, has consequently improved the measuring accuracy of pump under test.
Specifically, in this embodiment, the inlet pressure measurement branch a may include: an inlet pressure measuring pipe 5, an inlet gate valve 4 and an inlet pressure transmitter 13. One end of the inlet pressure measuring pipe 5 is communicated with the water pump test pool 1, and the other end of the inlet pressure measuring pipe is used for being connected with an inlet of the tested pump 14 and conveying water in the water pump test pool 1 to the tested pump 14. And the inlet gate valve 4 is arranged at the inlet piezometer tube 5 and is used for communicating or blocking the water of the water pump test pool 1. An inlet pressure transmitter 13 is installed at the inlet pressure measuring pipe 5 for measuring the inlet pressure of the pump 14 to be tested.
more specifically, the inlet pressure measuring pipe 5 is a pipeline arranged in the horizontal direction, one end of the pipeline is communicated with the side wall of the water pump test pool 1, and the other end of the pipeline is connected with the inlet of the tested pump 14. In this example, the inlet of the pump under test 14 is an opening in the horizontal direction.
specifically, in this embodiment, the inlet gate valve 4 and the inlet pressure transmitter 13 are installed at the inlet pressure measuring pipe 5 in the order of the water inlet direction of the pump 14. Preferably, the inlet pressure transducer 13 is arranged close to the inlet of the pump under test 14.
specifically, in this embodiment, the outlet pressure measuring branch B may include an outlet pressure measuring pipe 12, an electric control valve 7, an electromagnetic flowmeter 8, and an outlet pressure transmitter assembly 11. One end of the outlet pressure measuring pipe 12 is connected to the water pump test pool 1, and the other end of the outlet pressure measuring pipe is used for being connected with an outlet of the tested pump 14 and conveying water discharged by the tested pump 14 to the water pump test pool 1. An electric regulating valve 7 is installed at the outlet piezometer tube 12 for regulating the flow rate. An electromagnetic flow meter 8 is mounted at the outlet pressure measuring tube 12. The outlet pressure transmitter assembly 11 is a plurality of outlet pressure transmitters connected in parallel, the plurality of outlet pressure transmitters are installed in parallel at the outlet pressure measuring pipe 12 and used for measuring the outlet pressure of the tested pump 14 at different lifts, and each of the plurality of outlet pressure transmitters has a different measurement range so as to correspond to different lifts of the tested pump 14. Is installed at the outlet pressure measuring pipe 12 for measuring the outlet pressure of the pump 14 to be tested.
in particular, the outlet pressure transmitter assembly 11 may include a first outlet pressure transmitter 111 with a measurement range of 0-0.6Mpa, a second outlet pressure transmitter 112 with a measurement range of 0-1.6Mpa, a third outlet pressure transmitter 113 with a measurement range of 0-4.0Mpa, and a fourth outlet pressure transmitter 114 with a measurement range of 0-10 Mpa. Wherein, the front end of each outlet pressure transmitter corresponds to a solenoid valve. For example, when the pump 14 under test has a head of 100 meters (corresponding to a pressure of 1.0Mpa), the automatic testing device 100 is configured to open the solenoid valve corresponding to the second outlet pressure transmitter 112 with a measurement range of 0 to 1.6Mpa, and close the solenoid valve corresponding to the first outlet pressure transmitter 111 with a measurement range of 0 to 0.6Mpa, the solenoid valve corresponding to the third outlet pressure transmitter 113 with a measurement range of 0 to 4.0Mpa, and the solenoid valve corresponding to the fourth outlet pressure transmitter 114 with a measurement range of 0 to 10Mpa, thereby improving the measurement accuracy of the pump 14 under test. Similarly, when the pump 14 under test has a head of 10 meters (corresponding to a pressure of 0.1Mpa), the automatic testing device 100 is configured to open the solenoid valve corresponding to the first outlet pressure transmitter 111 with a measurement range of 0-0.6Mpa, and close the solenoid valves corresponding to the second to fourth outlet pressure transmitters 112, 113, and 114. Similarly, when the pump 14 under test has a head of 200 m (corresponding to a pressure of 2.0Mpa), the automatic testing apparatus 100 is configured to open the solenoid valve corresponding to the third outlet pressure transmitter 113 with a measurement range of 0-4Mpa, and close the solenoid valves corresponding to the first, second, and fourth outlet pressure transmitters 111, 112, and 114. Similarly, when the pump 14 under test has a head of 800 m (corresponding to a pressure of 8.0Mpa), the automatic testing device 100 is configured to open the solenoid valve corresponding to the fourth outlet pressure transmitter 114 with a measurement range of 0-10Mpa, and close the solenoid valves corresponding to the first to third outlet pressure transmitters 111, 112, 113.
in other embodiments, the number of outlet pressure actuators in the outlet pressure transmitter assembly 11 may be two, three, five, etc. other numbers, and the measurement ranges of the corresponding outlet pressure transmitters may be different.
Specifically, in the present embodiment, the outlet pressure transmitter assembly 11, the electromagnetic flow meter 8, and the electrical control valve 7 are installed at the outlet pressure measuring pipe 12 in this order in the drainage direction of the pump under test 14.
more specifically, the outlet of the pump under test 14 is arranged in the vertical direction. The outlet pressure measuring branch B is integrally in an inverted U shape. The outlet pressure measuring pipe 12 consists of a vertical outlet pressure measuring pipe, a 90-degree elbow 6 and a horizontal outlet pressure measuring pipe along the water flowing direction. The outlet pressure measuring branch B can comprise a 90-degree elbow 6 and a water return pipe 3, and the outlet pressure measuring pipe 12 is connected with the 90-degree elbow 6 and the water return pipe 3.
more specifically, the outlet pressure transducer assembly 11 is disposed at a vertical outlet pressure gage tube and is disposed proximate to an outlet of the pump under test 14. The electromagnetic flowmeter 8 and the electric regulating valve 7 are arranged at a horizontal outlet pressure measuring pipe.
specifically, in this embodiment, as shown in fig. 2, the data acquisition system 18 may include a PLC controller 19 and an upper computer 20. The PLC controller 19 is connected to the electric control valve 7, the electromagnetic flowmeter 8, the outlet pressure transmitter assembly 11, the inlet gate valve 4, the inlet pressure transmitter 13, and the temperature transmitter 2, configured to control the opening or closing of the electric control valve 7 and the inlet gate valve 4 and adjust the flow rate of the electric control valve 7, and further configured to receive the measured values of the flow rate, the outlet pressure, the inlet pressure, and the water temperature. The upper computer 20 is connected with the electrical parameter measuring instrument 10, the rotating speed sensor 15 and the PLC 19 and is configured to collect values of voltage, current, power frequency, rotating speed, flow, outlet pressure, inlet pressure and water temperature under the condition of stable data. The electrical parameter measuring instrument 10, the rotating speed sensor 15 and the PLC 19 are all connected with the upper computer 20 through corresponding communication interfaces so as to transmit data.
in this embodiment, each communication interface is a 485 communication interface.
specifically, in this embodiment, the automatic testing device 100 further includes a testing platform 17 for mounting the pump 14 and the motor 16.
the working process of the automatic testing device 100 for improving the testing precision of the water pump is as follows:
the tested pump 14 is arranged on the test platform 17, the inlet pressure measuring branch A is connected with the inlet of the tested pump 14, and the outlet pressure measuring branch B is connected with the outlet of the tested pump 14. The pump 14 to be tested is connected to the motor 16, and the motor 16 is connected to the soft start cabinet 9. The only one to be regulated in the test process of the tested pump 14 is the electric regulating valve 7, and other data only needs to be read.
The water pump test software of the data acquisition system 18 is turned on to start the test of the pump 14, and at this time, the "inlet pressure" of the test software is measured by the inlet pressure transmitter 13, the "outlet pressure" is measured by an outlet pressure transmitter (e.g., the first outlet pressure transmitter 111) in the outlet pressure transmitter assembly 11, the "flow rate" is measured by the electromagnetic flowmeter 8, the "water temperature" is measured by the temperature transmitter 2, the "motor speed" is measured by the speed sensor 15, and the "voltage", "current", "power" and "power frequency" parameters of the motor 16 are measured by the electrical parameter measuring instrument 10. The inlet pressure, outlet pressure, flow rate and temperature are 4-20mA signals, which are input into a PLC 19 of a data acquisition system 18. The voltage, current, power frequency and speed are communicated to the upper computer 20 of the data acquisition system 18 via a 485 interface.
And opening the inlet gate valve 4, filling water into the tested pump 14 by the water in the water pump test pool 1 through the inlet pressure measuring pipe 5, clicking a start button of the soft start cabinet 9, electrifying the motor 16, and operating the tested pump 14.
after a 'test start' button of the data acquisition system 18 is clicked, the PLC 19 automatically controls the electric control valve 7 to be opened, the upper computer 20 automatically judges whether the data tested by the tested pump 14 is stable, and if the data is stable and meets the requirements of the water pump test standard (GB/T3216 + 2016 revolving power pump hydraulic performance acceptance test 1 level, 2 levels and 3 levels), various data required by the test of the tested pump 14, such as flow, inlet pressure, outlet pressure, rotating speed, temperature, power frequency, current, voltage, motor power and the like, are automatically acquired.
The performance test of the tested pump 14 needs to collect data of 13 points, the PLC 19 automatically controls the electric control valve 7 to complete flow regulation, the upper computer 20 automatically completes the required data collection, the performance test collection of the tested pump 14 is automatically finished, and then the upper computer 20 automatically stores a disk and prints a report and a curve.
the above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (7)
1. An automatic testing device for improving the testing precision of a water pump, which is used for detecting the performance of a tested pump, is characterized by comprising:
The water pump test pool is used for storing test water;
The motor is connected with the tested pump and used for providing power for the tested pump;
One end of the inlet pressure measuring branch is communicated with the water pump test pool, the other end of the inlet pressure measuring branch is used for being connected with an inlet of the tested pump, conveying water in the water pump test pool to the tested pump, communicating or blocking the water in the water pump test pool, and testing the inlet pressure of the tested pump;
The outlet pressure measuring branch circuit is used for connecting an outlet of the tested pump, conveying water discharged by the tested pump to the water pump test pool, adjusting the flow of the tested pump and measuring the outlet pressure of the tested pump, and comprises an outlet pressure transmitter assembly, wherein the outlet pressure transmitter assembly has different measuring ranges so as to correspond to tested pumps with different lifts;
the soft starting cabinet is connected with the motor and is used for soft starting the motor;
an electrical parameter measuring instrument connected with the motor and configured to measure voltage, current, power and power frequency of the motor;
a rotation speed sensor installed at the motor for measuring a rotation speed of the motor;
The temperature transmitter is arranged in the water pump test pool and used for measuring water temperature; and
The data acquisition system is connected with the inlet pressure measuring branch, the outlet pressure measuring branch, the electrical parameter measuring instrument, the rotating speed sensor and the temperature transmitter and is configured to acquire various data required by the test of the tested pump under the condition of judging that the test data of the tested pump is stable;
The outlet pressure measurement branch comprises:
One end of the outlet pressure measuring pipe is connected to the water pump test pool, the other end of the outlet pressure measuring pipe is connected with the outlet of the tested pump and used for conveying water discharged by the tested pump to the water pump test pool,
the electric regulating valve is arranged at the outlet pressure measuring pipe and is used for regulating the flow of the pump to be tested;
the electromagnetic flowmeter is arranged at the outlet pressure measuring pipe and used for measuring the flow of the pump to be tested; and
the outlet pressure transmitter assembly is a plurality of outlet pressure transmitters connected in parallel, is arranged at the outlet pressure measuring pipe in parallel and is used for measuring the outlet pressure of the tested pump at different lifts, and each outlet pressure transmitter in the plurality of outlet pressure transmitters has a different measuring range so as to correspond to the tested pump at different lifts;
The outlet pressure transmitter assembly comprises a first outlet pressure transmitter with a measuring range of 0-0.6MPa, a second outlet pressure transmitter with a measuring range of 0-1.6MPa, a third outlet pressure transmitter with a measuring range of 0-4.0MPa and a fourth outlet pressure transmitter with a measuring range of 0-10MPa, wherein the front end of each outlet pressure transmitter corresponds to one electromagnetic valve.
2. The automatic test device of claim 1, wherein the inlet pressure tap branch comprises:
one end of the inlet pressure measuring pipe is communicated with the water pump test pool, and the other end of the inlet pressure measuring pipe is connected with an inlet of the tested pump and used for conveying water in the water pump test pool to the tested pump;
The inlet gate valve is arranged at the inlet pressure measuring pipe and used for communicating or blocking water in the water pump test pool; and
And the inlet pressure transmitter is arranged at the inlet pressure measuring pipe and used for measuring the inlet pressure of the tested pump.
3. the automatic testing device according to claim 2, wherein the inlet gate valve and the inlet pressure transmitter are installed at the inlet pressure measuring pipe in order of the water inlet direction of the pump under test.
4. The automatic testing device according to claim 1, wherein the outlet pressure transmitter, the electromagnetic flow meter and the electric control valve are installed at the outlet pressure measuring pipe in the order of the drainage direction of the pump under test.
5. The automatic test device of claim 1, wherein the inlet pressure tap branch comprises an inlet pressure tap pipe and an inlet gate valve and an inlet pressure transducer mounted thereto;
The outlet pressure measuring branch comprises an outlet pressure measuring pipe, an electric regulating valve, an electromagnetic flowmeter and an outlet pressure transmitter, wherein the electric regulating valve, the electromagnetic flowmeter and the outlet pressure transmitter are arranged at the outlet pressure measuring pipe;
The data acquisition system includes:
a PLC controller connected to the electric control valve, the electromagnetic flow meter, the outlet pressure transmitter, the inlet gate valve, the inlet pressure transmitter, and the temperature transmitter, configured to control opening or closing of the electric control valve and the inlet gate valve and to adjust a flow rate of the electric control valve, and configured to receive values of the measured flow rate, the measured outlet pressure, the measured inlet pressure, and the measured water temperature; and
The upper computer is connected with the electrical parameter measuring instrument, the rotating speed sensor and the PLC and is configured to collect values of voltage, current, power supply frequency, rotating speed, flow, outlet pressure, inlet pressure and water temperature under the condition of stable data;
The electrical parameter measuring instrument, the rotating speed sensor and the PLC are connected with the upper computer through corresponding communication interfaces so as to transmit data.
6. the automatic test device of claim 5, wherein each communication interface is a 485 interface.
7. the automatic test device of any one of claims 1-6, further comprising a test platform for a mounting base for the pump under test and the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821517708.4U CN209743128U (en) | 2018-09-17 | 2018-09-17 | Automatic testing device for improving testing precision of water pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821517708.4U CN209743128U (en) | 2018-09-17 | 2018-09-17 | Automatic testing device for improving testing precision of water pump |
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| Publication Number | Publication Date |
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| CN209743128U true CN209743128U (en) | 2019-12-06 |
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| CN201821517708.4U Active CN209743128U (en) | 2018-09-17 | 2018-09-17 | Automatic testing device for improving testing precision of water pump |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357139A (en) * | 2021-08-10 | 2021-09-07 | 焕新汽车科技(南通)有限公司 | Automatic performance test system for electronic water pump of recovery engine |
| CN113738631A (en) * | 2021-09-01 | 2021-12-03 | 昆明嘉和科技股份有限公司 | Industrial pump performance testing system and method |
| CN113738630A (en) * | 2021-08-31 | 2021-12-03 | 山东挚刚智能控制机械有限公司 | System for remotely acquiring operation data of water pump |
| CN114738297A (en) * | 2022-05-17 | 2022-07-12 | 中国计量大学 | Novel cavitation test system for intelligent open-loop centrifugal pump |
-
2018
- 2018-09-17 CN CN201821517708.4U patent/CN209743128U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357139A (en) * | 2021-08-10 | 2021-09-07 | 焕新汽车科技(南通)有限公司 | Automatic performance test system for electronic water pump of recovery engine |
| CN113357139B (en) * | 2021-08-10 | 2021-10-29 | 焕新汽车科技(南通)有限公司 | Automatic performance test system for electronic water pump of recovery engine |
| CN113738630A (en) * | 2021-08-31 | 2021-12-03 | 山东挚刚智能控制机械有限公司 | System for remotely acquiring operation data of water pump |
| CN113738631A (en) * | 2021-09-01 | 2021-12-03 | 昆明嘉和科技股份有限公司 | Industrial pump performance testing system and method |
| CN114738297A (en) * | 2022-05-17 | 2022-07-12 | 中国计量大学 | Novel cavitation test system for intelligent open-loop centrifugal pump |
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