CN115596657B - Motor pump detection system - Google Patents

Motor pump detection system Download PDF

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Publication number
CN115596657B
CN115596657B CN202211602616.7A CN202211602616A CN115596657B CN 115596657 B CN115596657 B CN 115596657B CN 202211602616 A CN202211602616 A CN 202211602616A CN 115596657 B CN115596657 B CN 115596657B
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China
Prior art keywords
motor pump
valve
oil
oil tank
vacuum
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Application number
CN202211602616.7A
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Chinese (zh)
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CN115596657A (en
Inventor
贾建波
吉玲
张玉霖
赵江波
张冠祺
尚捷
卢涛
孙师贤
兰洪波
孟巍
朱伟红
杨恒灿
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China Oilfield Services Ltd
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China Oilfield Services Ltd
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Priority to CN202211602616.7A priority Critical patent/CN115596657B/en
Publication of CN115596657A publication Critical patent/CN115596657A/en
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B51/00—Testing machines, pumps, or pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
    • F15B1/02—Installations or systems with accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
    • F15B21/04—Special measures taken in connection with the properties of the fluid
    • F15B21/042—Controlling the temperature of the fluid
    • F15B21/0423—Cooling
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/20—Fluid pressure source, e.g. accumulator or variable axial piston pump
    • F15B2211/21—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge
    • F15B2211/212—Systems with pressure sources other than pumps, e.g. with a pyrotechnical charge the pressure sources being accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/615—Filtering means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B2211/00—Circuits for servomotor systems
    • F15B2211/60—Circuit components or control therefor
    • F15B2211/62—Cooling or heating means

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Fluid-Pressure Circuits (AREA)

Abstract

The invention relates to a motor pump detection system which comprises a test bench, wherein a motor pump tool is arranged on the test bench and used for installing a motor pump to be tested, the motor pump tool is connected with a hydraulic circulating and filtering system, the hydraulic circulating and filtering system is connected with a vacuum oil tank, and the hydraulic circulating and filtering system is connected with a master control system. In the testing process, the hydraulic oil is in circulation of the hydraulic circulating filter system, the motor pump tool, the motor pump and the vacuum oil tank, so that the oil can be prevented from being polluted, and the cleanliness of the oil is ensured; the performance test device can be used for the performance test of the motor pump, so that the unplanned shutdown is effectively reduced, and the economic loss of an enterprise is reduced; the automatic test of the performance of the motor pump can be realized through the control of the master control system.

Description

Motor pump detection system
Technical Field
The invention belongs to the technical field of motor pump detection, and particularly relates to a motor pump detection system.
Background
The petrochemical industry motor pump is the biggest transmission of volume in the petrochemical industry apparatus, and the motor pump is one kind through motor drive's pump, and is specific, and the motor is DC brushless motor usually, and the pump is the plunger pump usually, is connected through the cooperation of key and keyway between motor and the pump, and the plunger pump rotates with same rotational speed under the drive of motor, and the reciprocal pump oil that operates of plunger is in order to produce pressure. The motor pump conveys various liquid media such as crude oil, finished oil, chemical raw materials, various intermediate products and finished products to other places like heart blood conveying, so that the safety and the stable operation of equipment of the motor pump are ensured. In order to ensure safe and stable operation of the motor pump apparatus, it is generally necessary to test the performance of the motor pump before use or before maintenance. The motor pump is detected, so that the equipment maintenance efficiency can be greatly improved, the unplanned shutdown in the equipment operation process can be effectively avoided, and the production loss of enterprises is reduced. The running state of the motor pump is detected, so that the levels of equipment management, maintenance and economic running can be improved to a great extent, the running stability of the equipment is improved, and the overall running and maintenance cost is reduced.
The existing motor pump detection system has single function and cannot meet the objective requirement of the market.
Disclosure of Invention
In order to solve all or part of the problems, the invention aims to provide a motor pump detection system, which can provide hydraulic oil for a motor pump in a motor pump tool through a hydraulic circulation filtering system, so that the performance of the motor pump can be judged according to the output flow and the output pressure of the motor pump.
According to one aspect of the invention, the motor pump detection system comprises a test bench, wherein a motor pump tool is arranged on the test bench and used for installing a motor pump to be tested, the motor pump tool is connected with a hydraulic circulation filtering system, the hydraulic circulation filtering system is connected with a vacuum oil tank and used for conveying hydraulic oil in the vacuum oil tank to the motor pump tool, the hydraulic circulation filtering system is connected with a main control system, and the main control system is used for controlling the hydraulic circulation filtering system.
Furthermore, the number of the motor pump tools is multiple, an outlet flow sensor and an outlet pressure sensor are arranged at an outlet of each motor pump tool, the outlet flow sensors and the outlet pressure sensors are connected with the master control system, and each motor pump tool is connected with a hydraulic circulating and filtering system;
the oil outlet of the vacuum oil tank is connected with an oil tank outlet pipe, the oil inlet of the vacuum oil tank is connected with an oil tank inlet pipe, the oil tank outlet pipe is connected with each hydraulic circulating and filtering system through a circulating system inlet pipe, and each motor pump tool is connected with the oil tank inlet pipe through a tool outlet pipe.
Furthermore, each motor pump tool is provided with a first connecting port, a second connecting port and a third connecting port, each hydraulic circulating and filtering system comprises an overflow valve, a first two-position two-way electromagnetic valve, a second two-position two-way electromagnetic valve, a throttling overflow valve assembly, a proportional overflow valve, a third two-position two-way electromagnetic valve and a first filter, and the first two-position two-way electromagnetic valve, the second two-position two-way electromagnetic valve and the third two-position two-way electromagnetic valve are all connected with the main control system;
the first connecting port is connected with one end of the overflow valve, one end of the first two-position two-way electromagnetic valve and one end of the second two-position two-way electromagnetic valve; a pressure gauge and a first pressure sensor are arranged between the first connecting port and one end of the second two-position two-way electromagnetic valve;
the other end of the first two-position two-way electromagnetic valve is connected with one end of the throttling overflow valve assembly; the other end of the throttling overflow valve assembly is connected with one end of the proportional overflow valve, one end of the third two-position two-way electromagnetic valve, the other end of the overflow valve and one end of the first filter;
the other end of the proportional overflow valve is connected with the other end of the second two-position two-way electromagnetic valve, and the other end of the third two-position two-way electromagnetic valve is connected with the second connector;
the other end of the first filter is connected with one end of a flow sensor, the other end of the flow sensor is connected with an inlet of a first one-way valve, and an outlet of the first one-way valve is connected with the third connecting port and the oil inlet pipe of the circulating system; the flow sensor, the pressure gauge and the pressure sensor are all connected with the master control system.
Furthermore, every all be equipped with the two solenoid valves of fourth on the frock oil pipe, the oil tank advances to be equipped with the second filter on the oil pipe, the two solenoid valves of fourth with master control system connects.
Furthermore, the oil outlet pipe of the oil tank is provided with a circulating pump, a third filter, a second one-way valve, a second pressure sensor and a first output pressure gauge, each circulating system oil inlet pipe is connected with a second output pressure gauge and an energy accumulator, and the circulating pump, the first output pressure gauge, the second pressure sensor and the second output pressure gauge are connected with the master control system.
Furthermore, the vacuum oil tank is connected with an oil temperature sensor, a vacuum pump, a liquid level sensor and a vacuum sensor, the vacuum oil tank is connected with an air source, a vacuum regulating valve is arranged between the air source and the vacuum oil tank, the air source is connected with an air filter, and the vacuum oil tank is connected with an oil cleanliness detector;
the oil temperature sensor, the vacuum pump and the oil cleanliness detector are all connected with the master control system.
Further, the rear side, the right side and the left side of test bench all are provided with the curb plate, the front side of test bench is provided with a body, the top of test bench is provided with the upper plate, the below of test bench is provided with the lower plate, hydraulic pressure circulating and filtering system sets up by the curb plate the door body the upper plate with in the space that the lower plate encloses.
Further, a tool base is fixedly connected to the upper base plate, the motor pump tool is fixed to the tool base, the tool base is connected with a valve block, and the hydraulic circulating and filtering system is connected to the valve block.
Furthermore, the master control system is connected with a touch screen all-in-one machine.
Furthermore, a cooling fan is connected to the side plate, and a roller is connected to the lower portion of the test bench.
According to the technical scheme, the motor pump detection system provided by the invention has the following beneficial effects:
in the testing process, the hydraulic oil is in circulation of the hydraulic circulating filter system, the motor pump tool, the motor pump and the vacuum oil tank, so that the oil can be prevented from being polluted, and the cleanliness of the oil is ensured;
the motor pump performance testing device can be used for testing the performance of the motor pump, so that the unplanned shutdown is effectively reduced, and the economic loss of an enterprise is reduced;
the automatic test of the performance of the motor pump can be realized through the control of the master control system.
Drawings
Fig. 1 is a schematic structural diagram of a motor pump detection system according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a hydraulic circulating filtration system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a motor pump fixture according to an embodiment of the present invention;
FIG. 4 is a schematic view of a first valve block of an embodiment of the present invention;
FIG. 5 is a schematic view of a second valve block according to an embodiment of the present invention;
FIG. 6 is a schematic view of a third valve block of an embodiment of the present invention;
FIG. 7 is a schematic diagram of a hydraulic circuit filtration system according to an embodiment of the present invention;
FIG. 8 is a hydraulic system connection diagram of a vacuum reservoir portion of an embodiment of the present invention;
FIG. 9 is a connection block diagram of a host system according to an embodiment of the present invention;
the reference numbers in the figures are: the testing bench comprises a testing bench 1, a motor pump tool 2, a motor pump 201, a vacuum oil tank 3, a tool base 4, a first valve block 5, a second valve block 6, a third valve block 7, a circulating pump 8, a vacuum pump 9, an air filter 10, an oil cleanliness detector 11, a proportional overflow valve 12, an overflow valve 13, a first two-position two-way electromagnetic valve 141, a second two-position two-way electromagnetic valve 142, a third two-position two-way electromagnetic valve 143, a first pressure sensor 15, a first filter 16, a flow sensor 17, a first one-way valve 18, an energy accumulator 19, an electrical installation plate 20, a touch screen computer 21, an adjusting button 22, a vacuum adjusting valve 23, a first output pressure gauge 24, a vacuum sensor 25, a liquid level sensor 26, a roller 27, a cooling fan 28, a door body 29, a circulating system oil inlet pipe 30, a tool oil outlet pipe 31, an oil tank oil inlet pipe 32, an oil outlet pipe 33, a third filter 34, a second one-way valve 35, a second pressure sensor 36 and an overflow valve throttling assembly 37.
Detailed Description
For a better understanding of the objects, structure and function of the present invention, a motor pump detection system of the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 3, a motor pump detection system according to an embodiment of the present invention is shown, and includes a test bench 1, a motor pump fixture 2 is disposed on the test bench 1, the motor pump fixture 2 is used for installing a motor pump 201 to be tested, the motor pump fixture 2 is connected to a hydraulic circulation filtering system, the hydraulic circulation filtering system is connected to a vacuum oil tank 3, the hydraulic circulation filtering system is used for conveying hydraulic oil in the vacuum oil tank to the motor pump fixture, the hydraulic circulation filtering system is connected to a main control system, and the main control system is used for controlling the hydraulic circulation filtering system. During testing, the motor pump 201 to be tested is installed in the motor pump tool 2, hydraulic oil in the vacuum oil tank 3 is controlled through the master control system to pass through the hydraulic circulating and filtering system, the hydraulic oil entering the hydraulic circulating and filtering system flows into the motor pump tool 2, and finally the hydraulic oil flows back to the vacuum oil tank 3 from the motor pump tool 2 under the action of the motor pump 201, the motor pump 201 is controlled by the master control system to start and control, so that the performance of the motor pump 201 can be judged according to the relation between the output flow and the output pressure of the motor pump at different rotating speeds and the rotating speed, the flow and the pressure of the motor pump, and the master control system is installed on the electric installation plate 20.
Specifically, the determining the performance of the motor pump includes: giving a rotating speed instruction of the motor pump corresponding to the motor, and if the pressure generated by the motor pump in the normal-temperature environment is in accordance with the index requirement under the drive of the specified rotating speed of the motor, and the current power consumption of the motor corresponding to the motor pump is stable, the performance of the motor pump is normal; for example, the rotating speed of the motor is set to be 2000 revolutions per minute, the rotating speed of the motor is stabilized within the range of (2000 +/-50) revolutions per minute, the pressure is stabilized within (20 +/-2) MPa, and the current is 0.8 to 1 ampere, so that the performance of the motor pump is normal. Specifically, the relationship between the rotating speed, the pressure and the current is related to the brand and the displacement of the motor pump and a hydraulic circulation filtering system.
In a specific embodiment, as shown in fig. 8, a plurality of motor pump fixtures 2 are provided, an outlet flow sensor and an outlet pressure sensor are provided at an outlet of each motor pump fixture 2, the outlet flow sensor and the outlet pressure sensor are both connected to the master control system, and each motor pump fixture 2 is connected to a hydraulic circulating and filtering system; the oil-out of vacuum oil tank 3 is connected with oil tank play oil pipe 33, the oil inlet of vacuum oil tank 3 is connected with oil tank and advances oil pipe 32, oil tank play oil pipe 33 advances oil pipe 30 and every through the circulation system hydraulic circulating filtration system connection, every motor pump frock 2 all through frock play oil pipe 31 with oil tank advances oil pipe 32 and connects. Through setting up a plurality of motor pump frock 2 to can realize carrying out capability test to a plurality of motor pumps, improve the productivity of test, in addition, every motor pump frock 2 all is connected with a hydraulic pressure circulation filtration system, thereby can realize carrying out the independent control to every motor pump frock 2.
In a specific embodiment, as shown in fig. 4-7 and 9, each of the motor pump tools 2 is provided with a first connection port, a second connection port and a third connection port, each of the hydraulic circulation filtration systems includes an overflow valve 13, a first two-position two-way solenoid valve 141, a second two-position two-way solenoid valve 142, a throttling overflow valve assembly 37, a proportional overflow valve 12, a third two-position two-way solenoid valve 143 and a first filter 16, the first two-position two-way solenoid valve 141, the second two-position two-way solenoid valve 142 and the third two-position two-way solenoid valve 143 are all connected to the main control system, specifically, the main control system includes a digital quantity control module, and the first two-position two-way solenoid valve 141, the second two-position two-way solenoid valve 142 and the third two-position two-way solenoid valve 143 are all connected to a digital IO port of the digital quantity control module, so that the relevant solenoid valves can be conveniently controlled by the main control system;
wherein: the first connecting port is connected with one end of the overflow valve 13, one end of a first two-position two-way electromagnetic valve 141 and one end of a second two-position two-way electromagnetic valve 142; a pressure gauge and a first pressure sensor 15 are arranged between the first connecting port and one end of the second two-position two-way electromagnetic valve 142; the other end of the first two-position two-way electromagnetic valve 141 is connected with one end of the throttling overflow valve assembly 37; the other end of the throttling overflow valve assembly 37 is connected with one end of the proportional overflow valve 12, one end of the third two-position two-way electromagnetic valve 143, the other end of the overflow valve 13 and one end of the first filter 16; the other end of the proportional overflow valve 12 is connected with the other end of the second two-position two-way solenoid valve 142, and the other end of the third two-position two-way solenoid valve 143 is connected with the second connecting port; the other end of the first filter 16 is connected with one end of a flow sensor 17, the other end of the flow sensor 17 is connected with an inlet of a first one-way valve 18, and an outlet of the first one-way valve 18 is simultaneously connected with the third connecting port and the circulating system oil inlet pipe 30;
flow sensor 17, manometer and first pressure sensor 15 all with master control system connects, and is concrete, master control system still includes analog quantity control module, flow sensor 17, manometer and first pressure sensor 15 all with analog quantity IO port connection of analog quantity control module.
In this embodiment, the first two-position two-way solenoid valve 141, the second two-position two-way solenoid valve 142 and the third two-position two-way solenoid valve 143 all play roles of communication and cutoff, and the communication can be used for hydraulic oil to pass through, and the cutoff is used for preventing hydraulic oil from passing through; the overflow valve 13, the throttling overflow valve component 37 and the proportional overflow valve 12 are used for safety protection; the first filter 16 is used for filtering oil; the flow sensor 17 is used for detecting the flow of the hydraulic oil flowing through the pipeline, and the first check valve 18 is used for controlling the flow direction of the hydraulic oil, that is, the hydraulic oil can only enter the first check valve 18 through the inlet of the first check valve 18 and then flow out from the outlet of the first check valve 18.
In a specific embodiment, each of the tool oil outlet pipes 31 is provided with a fourth two-position two-way electromagnetic valve 144, the oil tank oil inlet pipe 32 is provided with a second filter, and the fourth two-position two-way electromagnetic valve 144 is connected to a digital IO port of a digital quantity control module of the main control system, as shown in fig. 9. The fourth two-position two-way electromagnetic valve also plays a role in controlling oil to pass through or preventing the oil from passing through, and the second filter plays a role in filtering the oil.
In a specific embodiment, as shown in fig. 8, a circulation pump 8, a third filter 34, a second check valve 35, a second pressure sensor 36 and a first output pressure gauge 24 are arranged on the oil outlet pipe 33 of the oil tank, each of the circulation system oil inlet pipes 30 is connected with a second output pressure gauge and an energy accumulator 19, in addition, the circulation pump 8, the first output pressure gauge 24, the second pressure sensor 36 and the second output pressure gauge are connected with the main control system, specifically, the circulation pump 8 is connected with a digital IO port of the digital quantity control module, and the second pressure sensor 36, the first output pressure gauge 24 and the second output pressure gauge are connected with an analog IO port of the analog quantity control module. In this embodiment, the circulation pump 8 is used for providing power for the flow of hydraulic oil, the third filter 34 filters the oil entering each hydraulic circulation filtering system from the vacuum oil tank 3, the second check valve 35 is used for controlling the one-way flow of the oil, the first output pressure gauge 24 is used for reading the pressure of the oil in the oil outlet pipe 33 of the oil tank, and the second output pressure gauge is used for reading the pressure of the hydraulic oil entering the oil inlet pipe 30 of each circulation system.
In a specific embodiment, as shown in fig. 8, the vacuum oil tank 3 is connected with an oil temperature sensor, a vacuum pump 9, a liquid level sensor 26 and a vacuum sensor 25, the vacuum oil tank 3 is connected with an air source, a vacuum regulating valve 23 is arranged between the air source and the vacuum oil tank 3, the air source is connected with an air cleaner 10, and the vacuum oil tank 3 is connected with an oil cleanliness detector 11; the oil temperature sensor, the vacuum sensor 25, the vacuum pump 9 and the oil cleanliness detector 11 are all connected with the master control system, specifically, the vacuum sensor 25 is connected with an analog quantity IO port of the analog quantity control module, the vacuum pump 9 is connected with a digital IO port of the digital quantity control module, the master control system further comprises a communication module, and the oil cleanliness detector 11 is connected with a communication interface of the communication module; specifically, the liquid level sensor 26 is used for measuring the liquid level, the vacuum sensor 25 is used for acquiring the vacuum degree information of the vacuum oil tank 3, the gas source is used for introducing gas into the vacuum oil tank 3, the air filter 10 is used for filtering the gas, and the oil cleanliness detector 11 is used for detecting the cleanliness of oil.
In a specific embodiment, side plates are arranged on the rear side, the right side and the left side of the test bench 1, a door 29 is arranged on the front side of the test bench 1, an upper bottom plate is arranged above the test bench 1, a lower bottom plate is arranged below the test bench 1, and the hydraulic circulating and filtering system is arranged in a space surrounded by the side plates, the door 29, the upper bottom plate and the lower bottom plate.
In a specific embodiment, a tool base 4 is fixedly connected to the upper base plate, the motor pump tool 2 is fixed to the tool base 4, the tool base 4 is connected with a valve block, and the hydraulic circulating and filtering system is connected to the valve block.
Specifically, as shown in fig. 4 to 6, the valve block includes a first valve block 5, a second valve block 6 and a third valve block 7, the first valve block 5 is connected to the tooling base 4, the first valve block 5 is connected to the second valve block 6, and the first valve block 5 is connected to the third valve block 7; the overflow valve 13, the throttling overflow valve assembly 37, the proportional overflow valve 12 and the tool base 4 are integrally installed on the first valve block 5; the first two-position two-way solenoid valve 141, the second two-position two-way solenoid valve 142, the third two-position two-way solenoid valve 143, the fourth two-position two-way solenoid valve 144 and the first pressure sensor 15 are integrally installed between the first valve block 5 and the third valve block 7; the first filter 16 and the first one-way valve 18 are both integrally mounted between the second valve block 6 and the third valve block 7; the flow sensor 17 and the accumulator 19 are mounted on the second valve block 6.
In a specific embodiment, the master control system is connected with a touch screen all-in-one machine, specifically, the master control system is connected with the touch screen all-in-one machine through a communication interface of the communication module, and the touch screen all-in-one machine is connected with a motor pump to be tested through the communication interface.
In one embodiment, a heat dissipation fan 28 is attached to the side plate, and a roller 27 is attached to the underside of the test stage 1.
In order to understand the above embodiments of the present invention, the following detailed description is given:
when specifically using, the motor pump that needs the test is installed in motor pump frock 2, and during the test, hydraulic pressure circulating and filtering system will pass through fluid injection motor pump frock 2, get back to vacuum tank 3 through motor pump frock 2 again in to realize whole test process, fluid is in vacuum circulation filtration purification process always, guarantees the cleanliness of fluid when testing.
When the performance of the motor pump is specifically tested, referring to fig. 7, the no-load flow performance can be tested, during the test, the second two-position two-way electromagnetic valve 142 is opened, the proportional overflow valve 12 is adjusted to the minimum pressure, the motor pump to be tested works, and hydraulic oil flows out through the port B1 of the motor pump tool 2, passes through the second two-position two-way electromagnetic valve 142, the proportional overflow valve 12, the first filter 16, the flow sensor 17 and the first check valve 18, and finally returns to the motor pump tool 2 from the port A1 (port B3) of the motor pump tool 2; the first pressure sensor 15 and the pressure gauge detect the output pressure of the motor pump, and the flow sensor 17 detects the output flow of the motor pump; in the process, the interception function of the proportional overflow valve 12 is adjusted to be minimum, and the flow passing through the proportional overflow valve is maximum; the actual output pressure of the motor pump can be calculated according to the output flow of the motor pump detected by the flow sensor 17, so that the performance of the motor pump can be calculated according to the actual output pressure of the motor pump and the rated pressure on the nameplate of the motor pump.
The second test mode of motor pump performance is external overflow valve pressure regulating mode, during the test, open second two-position two-way solenoid valve 142, adjust proportional overflow valve 12 output pressure, the motor pump work of awaiting measuring, hydraulic oil flows out through the B1 mouth of motor pump frock 2, through second two-position two-way solenoid valve 142, proportional overflow valve 12, first filter 16, flow sensor 17 and first check valve 18, at last from the A1 (B3) mouth of motor pump frock 2 return in the motor pump frock 2. In the mode, the first pressure sensor 15 and the pressure gauge detect the output pressure of the motor pump, the flow sensor 17 detects the output flow of the motor pump, the proportional overflow valve 12 adjusts the output pressure of the motor pump to be tested, specifically, because the flow channel of the proportional overflow valve 12 is very small, the flow flowing out of the port B1 of the motor pump tool 2 is large, so that high pressure is generated at the port B1 of the motor pump tool 2, pressure difference between the high pressure and the low pressure can be obtained according to the high pressure generated at the port B1 of the motor pump tool 2 and the low pressure at the port A1 (port B3) of the motor pump tool 2, so that acting force generated under specific working conditions can be obtained according to the pressure difference, specifically, for example, the acting force is used for a rotary guide pushing system, and vector resultant force obtained according to different pressures generated by a plurality of hydraulic circulating filter systems is used for rotary pushing; therefore, the appropriate proportional overflow valve 12 can be determined according to the fixed motor pump in the actual working condition (the actual working condition of rotary pushing).
The third motor pump performance is external definite value overflow throttle valves test mode, and specific first two-position two-way solenoid valve 141 opens, awaits measuring the motor pump work, and hydraulic oil flows out through the B1 mouth of motor pump frock 2, through first two-position two-way solenoid valve 141, throttle overflow valve subassembly 37, first filter 16, flow sensor 17 and first check valve 18, at last from the A1 (B3) mouth of motor pump frock 2 return in the motor pump frock 2. The throttle relief valve assembly 37 is fixed in this mode so that the pressure differential produced by different motor pumps at different rotational speeds can be tested according to the specific throttle relief valve assembly 37, thereby selecting the appropriate motor pump according to the specific operating conditions.
And the fourth step is an assembly performance test, the third two-position two-way electromagnetic valve 143 is opened, the motor pump to be tested works, hydraulic oil flows out through the port B2 of the motor pump tool 2, passes through the third two-position two-way electromagnetic valve 143, the first filter 16, the flow sensor 17 and the first check valve 18, and finally returns to the motor pump tool 2 from the port A1 (port B3) of the motor pump tool 2. In the process, the flow sensor 17 detects the output flow of the motor pump, the suitable motor pump, the proportional overflow valve 12 and the throttle overflow valve assembly 37 are selected in the three testing modes, and the testing mode is used for testing according to the selected motor pump, so that whether the actual working result of the selected motor pump and the preset result after selection have deviation or not is judged according to the detected output flow of the motor pump.
Referring to fig. 8, when hydraulic oil needs to be pumped into the motor pump tool from the vacuum oil tank, the circulation pump 8 is turned on, the oil flows into the circulation system oil inlet pipe 30 through the vacuum oil tank 3, the circulation pump 8, the third filter 34 and the second check valve 35, and finally enters the motor pump tool through the electromagnetic valve on the circulation system oil inlet pipe 30, in the process, the oil tank oil outlet pipe 33 is provided with the first proportional throttle valve 38, and the hydraulic pressure entering the motor pump tool is adjusted by the first proportional throttle valve 38 in a flow adjusting manner. In fig. 8, the vacuum pump 9 is turned on to vacuumize the vacuum oil tank 3, the liquid level sensor 26 is used to measure the liquid level value of the vacuum oil tank 3, the second pressure sensor 36 and the first output pressure gauge 24 are used to measure the pressure of the hydraulic oil entering the motor pump tool, and the vacuum sensor 25 is used to measure the vacuum degree in the vacuum oil tank 3.
A second proportional throttle valve 39 is further arranged between the oil tank outlet pipe 33 and the vacuum oil tank 3, and the second proportional throttle valve 39 adjusts the pressure of the circulating system by adjusting the oil quantity returned to the vacuum oil tank 3; hydraulic oil in the motor pump tool flows out through an A2 port of the motor pump tool 2, and flows into the vacuum oil tank through the tool oil outlet pipe 31 and the oil tank oil inlet pipe 32.
The main control system is a core component for realizing the functions of the whole testing system, and sends different instructions under the control of control software to realize the testing functions of the whole motor pump performance testing system.
The software running in the main control system comprises PLC main control software, sensor data processing software, motor pump control software, test report generation software, communication processing software, system self-checking software, safety protection software and the like, and all the software are in modular design and work cooperatively to realize all the test functions of the test system.
The PLC main control software processes the input and output (buttons, emergency stop, liquid level, switch input signals, filter blockage signals, electromagnetic valve switches, indicator lamp control, circulating pump 8 start and stop, vacuum pump 9 start and stop and the like) of all digital quantity control modules of the test system, and processes the input and output (sensor AD conversion, pressure output control of each part and the like) of all analog quantity control modules; and the start and stop of different pumps, the switch of the electromagnetic valve and the like are controlled, the hydraulic oil circuit is switched, and the switching of different testing functions is realized.
The sensor data processing software processes the various sensor signals of the test system, including the first pressure sensor 15 and the second pressure sensor 36; taking 3 motor pump tools 2 arranged on the test bench 1 as an example, the data processing software also processes an outlet pressure sensor of the motor pump 1, an outlet pressure sensor of the motor pump 2, an outlet pressure sensor of the motor pump 3, an outlet flow sensor of the motor pump 1, an outlet flow sensor of the motor pump 2, an outlet flow sensor of the motor pump 3, a vacuum sensor 25, a liquid level sensor 26 and an oil temperature sensor.
The motor pump control software can simultaneously control 3 groups of motor pumps, and the function of testing the performance of the motor pumps is realized.
After the performance test of the motor pump is completed, the test report generation software can generate a performance test report of the motor pump, including the storage of a test process curve and test process data.
The upper computer control software runs in the touch screen computer 21 and provides a human-computer interface for an operator to operate the test system, and various adjusting buttons 22 are arranged on the touch screen computer 21. The upper computer software displays the engineering quantity of each sensor, provides functions of setting test parameters, selecting test procedures and the like, and can check the working state of the test system in real time through the upper computer software.
Data transmission between the touch screen computer 21 and the master control PLC is achieved through communication processing software, the master control PLC feeds back the running state of the equipment to upper computer software, and the upper computer software sends control instructions sent by an operator to the master control PLC through the communication processing software.
The software system also comprises self-checking software which can self-check the working state of the test system and feed back the working state to an operator. The safety protection software mainly comprises reading and processing of signals such as an emergency stop signal, an overload signal of the circulating pump 8, an overload signal of the vacuum pump 9, an over-differential signal of each pressure, an over-differential signal of each flow, a liquid level signal of the vacuum tank and the like in the test system, and can send alarm information of the test system to the upper computer software in time.
It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the invention pertains.
Furthermore, the terms "a", "an", "two", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention, and they should be construed as being included in the following claims and description. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. It is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.

Claims (9)

1. A motor pump detection system is characterized by comprising a test bench, wherein a motor pump tool is arranged on the test bench and used for mounting a motor pump to be tested, the motor pump tool is connected with a hydraulic circulating and filtering system, the hydraulic circulating and filtering system is connected with a vacuum oil tank and used for conveying hydraulic oil in the vacuum oil tank to the motor pump tool, the hydraulic circulating and filtering system is connected with a master control system, and the master control system is used for controlling the hydraulic circulating and filtering system; the motor pump frock is a plurality of, every the exit of motor pump frock all is provided with export flow sensor and export pressure sensor, export flow sensor and export pressure sensor all with master control system connects, every the motor pump frock all is connected with one hydraulic pressure circulation filtration system, master control system is connected with the touch-sensitive screen all-in-one.
2. The motor pump detection system of claim 1, wherein an oil outlet of the vacuum oil tank is connected to an oil tank outlet pipe, an oil inlet of the vacuum oil tank is connected to an oil tank inlet pipe, the oil tank outlet pipe is connected to each of the hydraulic circulating filtration systems through a circulating system inlet pipe, and each of the motor pump tools is connected to the oil tank inlet pipe through a tool outlet pipe.
3. The motor pump detection system of claim 2, wherein each motor pump tool is provided with a first connection port, a second connection port and a third connection port, each hydraulic circulating and filtering system comprises an overflow valve, a first two-position two-way solenoid valve, a second two-position two-way solenoid valve, a throttling overflow valve assembly, a proportional overflow valve, a third two-position two-way solenoid valve and a first filter, and the first two-position two-way solenoid valve, the second two-position two-way solenoid valve and the third two-position two-way solenoid valve are all connected with the main control system;
the first connecting port is connected with one end of the overflow valve, one end of the first two-position two-way electromagnetic valve and one end of the second two-position two-way electromagnetic valve; a pressure gauge and a first pressure sensor are arranged between the first connecting port and one end of the second two-position two-way electromagnetic valve;
the other end of the first two-position two-way electromagnetic valve is connected with one end of the throttling overflow valve component; the other end of the throttling overflow valve assembly is connected with one end of the proportional overflow valve, one end of the third two-position two-way electromagnetic valve, the other end of the overflow valve and one end of the first filter;
the other end of the proportional overflow valve is connected with the other end of the second two-position two-way electromagnetic valve, and the other end of the third two-position two-way electromagnetic valve is connected with the second connector;
the other end of the first filter is connected with one end of a flow sensor, the other end of the flow sensor is connected with an inlet of a first one-way valve, and an outlet of the first one-way valve is connected with the third connecting port and the oil inlet pipe of the circulating system; the flow sensor, the pressure gauge and the pressure sensor are all connected with the master control system.
4. The motor pump detection system according to claim 2, wherein a fourth two-position two-way solenoid valve is disposed on each tooling oil outlet pipe, a second filter is disposed on the oil inlet pipe of the oil tank, and the fourth two-position two-way solenoid valve is connected with the main control system.
5. The motor pump detection system of claim 2, wherein a circulation pump, a third filter, a second check valve, a second pressure sensor and a first output pressure gauge are arranged on an oil outlet pipe of the oil tank, a second output pressure gauge and an energy accumulator are connected to an oil inlet pipe of each circulation system, and the circulation pump, the first output pressure gauge, the second pressure sensor and the second output pressure gauge are connected with the master control system.
6. The motor pump detection system according to claim 1, wherein the vacuum oil tank is connected with an oil temperature sensor, a vacuum pump, a liquid level sensor and a vacuum sensor, the vacuum oil tank is connected with an air source, a vacuum regulating valve is arranged between the air source and the vacuum oil tank, the air source is connected with an air filter, and the vacuum oil tank is connected with an oil cleanliness detector;
the oil temperature sensor, the vacuum pump and the oil cleanliness detector are all connected with the master control system.
7. The motor pump detection system of claim 1, wherein side plates are arranged on the rear side, the right side and the left side of the test bench, a door body is arranged on the front side of the test bench, an upper bottom plate is arranged above the test bench, a lower bottom plate is arranged below the test bench, and the hydraulic circulation and filtration system is arranged in a space defined by the side plates, the door body, the upper bottom plate and the lower bottom plate.
8. The motor pump detection system of claim 7, wherein a tool base is fixedly connected to the upper base plate, the motor pump tool is fixed to the tool base, the tool base is connected to a valve block, and the hydraulic circulating filter system is connected to the valve block.
9. The motor pump testing system of claim 7, wherein a heat dissipation fan is attached to said side plate, and a roller is attached to the underside of said test rig.
CN202211602616.7A 2022-12-14 2022-12-14 Motor pump detection system Active CN115596657B (en)

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Publication number Priority date Publication date Assignee Title
CN102418691B (en) * 2011-07-12 2014-12-10 上海华力微电子有限公司 Novel method for fully automatically detecting pump failure
FI127217B (en) * 2017-01-17 2018-01-31 Lappeenrannan Teknillinen Yliopisto Method and system for determining leakage flow in a negative pressure filter system
CN108561302A (en) * 2018-01-08 2018-09-21 湖北赛恩斯科技股份有限公司 Oil pump detection device
CN112377487A (en) * 2020-10-24 2021-02-19 济宁学院 Hydraulic comprehensive test platform
CN113638891B (en) * 2021-04-29 2024-03-15 北京精密机电控制设备研究所 Turbine pump test system

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