CN216642665U

CN216642665U - Safety detection device for hydraulic pump station

Info

Publication number: CN216642665U
Application number: CN202123274204.9U
Authority: CN
Inventors: 于永生; 马林; 周先平; 杨华; 秦赟; 高磊; 吴建华; 陈良; 宋逸飞; 周学正
Original assignee: Hudong Electric Locomotive Depot Of Daqin Railway Co ltd; Taiyuan Locomotive Depot Of Daqin Railway Co ltd; Science And Technology Institute Of Daqin Railway Co ltd
Current assignee: Hudong Electric Locomotive Depot Of Daqin Railway Co ltd; Taiyuan Locomotive Depot Of Daqin Railway Co ltd; Science And Technology Institute Of Daqin Railway Co ltd
Priority date: 2021-12-24
Filing date: 2021-12-24
Publication date: 2022-05-31
Anticipated expiration: 2031-12-24

Abstract

The utility model relates to a safety detection device for a hydraulic pump station, belonging to the technical field of safety detection devices for hydraulic pump stations; the technical problem to be solved is as follows: the improvement of the hardware structure of the safety detection device of the hydraulic pump station is provided; the technical scheme for solving the technical problems is as follows: the testing system comprises a pump station to be tested, wherein the pump station to be tested is connected with a testing console through an oil inlet and outlet interface module, the testing console comprises a protective cover and a box body, an industrial personal computer and a stabilized voltage power supply are arranged in the box body, the back of the box body is provided with the oil inlet and outlet interface module, the oil inlet and outlet interface module comprises an oil inlet, an oil return port and a testing loop pipeline, an oil inlet pipe of the pump station to be tested is connected with the oil inlet of the testing console, an oil outlet pipe of the pump station to be tested is connected with the oil return port of the testing console, a stop valve and a loading valve are sequentially arranged on the testing loop pipeline of the oil inlet and outlet interface module, and a pressure sensor and a flow sensor are further arranged on the testing loop pipeline; the utility model is applied to the hydraulic pump station.

Description

Safety detection device for hydraulic pump station

Technical Field

The utility model discloses a safety detection device for a hydraulic pump station, and belongs to the technical field of safety detection devices for hydraulic pump stations.

Background

The hydraulic pump station in the railway rescue equipment is a hydraulic source device composed of a hydraulic pump, a driving motor, an oil tank, a directional valve, a throttle valve, an overflow valve and the like or a hydraulic device including a control valve, oil is supplied according to the flow direction, pressure and flow rate required by the driving device, the hydraulic pump station is suitable for various machines with the driving device separated from the hydraulic station, the hydraulic station is connected with the driving device (the oil cylinder or the motor) through an oil pipe, and a hydraulic system can realize various specified actions.

The safety of the hydraulic pump station needs to be timely detected in the use process of the hydraulic pump station, but the existing hydraulic pump station or oil cylinder cannot realize automatic detection of flow and pressure of the pump station, and the safety of the device is poor, so that a safety detection device of the hydraulic pump station needs to be provided.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects in the prior art, the utility model aims to solve the technical problems that: the improvement of the hardware structure of the safety detection device of the hydraulic pump station is provided.

In order to solve the technical problems, the utility model adopts the technical scheme that: the utility model provides a hydraulic pumping station safety inspection device, includes the pump station that awaits measuring, the pump station that awaits measuring links to each other through business turn over oil interface module with test console, test console includes protective cover and box, inside industrial computer, the constant voltage power supply of being provided with of box, the back of box is provided with business turn over oil interface module, and wherein business turn over oil interface module includes oil inlet and oil return and test loop pipeline, and the oil inlet that the oil inlet pipe of pump station was surveyed inserts test console, and the oil return that the oil outlet pipe of pump station was surveyed inserts test console wherein has set gradually stop valve, loading valve on the test loop pipeline of business turn over oil interface module, still be provided with pressure sensor, flow sensor on the test loop pipeline, pressure sensor, flow sensor link to each other with the industrial computer through AD data acquisition conversion module respectively, stop valve, loading valve, The loading valve and the control end of the pump station to be tested are connected with an industrial personal computer through wires respectively, the industrial personal computer is further connected with a display and a printer through wires, and the power supply end of the industrial personal computer is connected with power frequency 220V alternating current through a stabilized voltage power supply.

The oil inlet and outlet interface modules are specifically provided with two groups, the back surface of the box body is provided with two oil inlets and two oil return ports, and each group of oil inlets and oil return ports are respectively connected with respective test loop pipelines.

And air holes are formed in two sides of the box body.

And a one-way valve is arranged in the oil inlet and outlet interface module, and the flow direction of the one-way valve flows in from the oil inlet and flows out from the oil return port.

The inside printer that still is provided with of box, the printer passes through the wire and links to each other with the industrial computer.

The protective cover is made of transparent explosion-proof materials.

The flow sensor is a turbine flow sensor.

The industrial personal computer is also connected with the acquisition card through a wire.

The box is internally provided with a socket, an electric appliance box is arranged in the box and close to the back plate, and a stop valve and a loading valve are arranged in the electric appliance box.

Compared with the prior art, the utility model has the beneficial effects that: the transparent explosion-proof material is used as the protective cover of the test board, so that the test board is dustproof and has a safety protection function; the oil inlet and outlet misconnection prevention module is used, so that the high-pressure oil of the oil inlet pipe after the high-pressure and low-pressure oil pipe is reversely connected directly flows back to the test pump station, and the damage to the detection device and the personal danger hidden danger to the detection personnel caused by the misoperation are effectively prevented.

Drawings

The utility model is further described below with reference to the accompanying drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a circuit schematic of the test console of the present invention;

FIG. 3 is a schematic structural diagram of a test console according to the present invention;

FIG. 4 is a schematic view of a check valve of the present invention;

FIG. 5 is an electrical schematic of the present invention;

FIG. 6 is a schematic flow chart of a pump station pressure flow test procedure of the present invention;

FIG. 7 is a schematic flow chart of the pump station pressure maintaining test procedure of the present invention.

Detailed Description

As shown in fig. 1 to 7, the safety detection device for a hydraulic pump station mainly comprises a test console, which comprises the functions of test control, display and recording of the pump station. The test console comprises a pump station loop test control part, an electrical control part and the like. The circuit principle of the pump station loop test control is shown in fig. 2, and the appearance structure of the test console is shown in fig. 3.

The pump station loop test control part comprises two sets of identical control loops, and an oil inlet and outlet interface module is installed on the back surface of a test console and comprises two paths of interfaces P1 (an oil inlet) and O1 (an oil return port); p2 (oil inlet), O2 (oil return opening), can accomplish the hydraulic power unit to two-way output simultaneously and test. The oil inlet and outlet interface module has the functions of ensuring that the system can only carry out one-way test and is reversely in a smooth state, and the design aims at protecting the flow sensor which cannot bear overlarge pressure and avoiding personal safety hidden dangers caused by misconnection of high-pressure oil pipes. The principle is shown in fig. 4. When the oil inlet and the oil outlet are connected in a staggered manner, the pressure of the end of the oil return opening is greater than that of the end of the oil inlet, the one-way valve is opened, a passage from the oil inlet to the oil return is formed, and therefore high-pressure hydraulic oil cannot pass through the flow sensor, and the flow sensor is protected. Specific parameters are shown in table 1.

TABLE 1 oil inlet and outlet interface module parameter table

The control part of the utility model mainly comprises an industrial personal computer, a stop valve, a loading valve, a flow sensor, a pressure sensor, a stabilized voltage power supply and a display. The stabilized voltage power supply converts power frequency 220V alternating current into stable direct current 24V power supply to be supplied to an industrial personal computer, a display and a flow sensor for use. The electrical composition and communication schematic diagram is shown in fig. 6. The industrial personal computer is internally integrated with a test program for executing the hydraulic pump station, and is mainly used for controlling the analog/digital acquisition process, converting acquisition parameters in real time and calculating the power efficiency of the tested pump station. The display is used for displaying the monitoring data. The flow sensor is used for displaying the flow of the hydraulic oil output by the hydraulic pump station.

The test principle of the utility model is as follows: the on-off and pressure values of the hydraulic pipeline are controlled through an oil return throttling stop valve, a loading valve and the like, the pressure of each test loop is detected by using a pressure sensor, the hydraulic oil flow of each test loop is detected by using a flow sensor, and the maximum stroke of the jack is detected by using a displacement sensor. The system carries out analog-to-digital conversion on the detected quantity, converts the detected quantity into flow, pressure and displacement values according to a corresponding conversion formula, and then stores the flow, pressure and displacement values into a database for analysis and query. And in the detection process, the data display interface displays the numerical value of each measurement parameter in real time. The structure composition principle is shown in figure 1. During testing, the oil inlet pipe of the tested pump station is connected to the port P of the oil inlet and outlet interface module of the console, and the oil return pipe is connected to the port O of the oil inlet and outlet interface module of the console. The hydraulic oil flows through the stop valve, the loading valve and the flow sensor from the port P of the oil inlet and outlet interface module in sequence and then flows back to the oil tank of the tested pump station through the port O of the oil return interface of the oil inlet and outlet module.

The utility model uses the one-way throttle stop valve, and has the functions of one-way smooth and reverse stop. Hydraulic oil enters from the inlet and flows out from the outlet, and is used for cutting off a hydraulic oil loop of the tested pump station during testing, and the hydraulic oil loop is matched with the motor control of the tested pump station, so that the pump station can be in a pressure maintaining state; the relevant parameters of the stop valve are shown in table 2.

TABLE 2 stop valve parameter table

The loading valve has the functions that when the pump station is tested, the working pressure of the tested pump station is adjusted by adjusting the handle of the loading valve, and the flow value of the pump station under different pressures can be measured by matching with the flow sensor. The relevant parameters of the loading valve are shown in table 3.

TABLE 3 Loading valve parameter Table

The flow sensor is used for measuring the flow of hydraulic oil in a loop, and the liquid turbine flow sensor is selected according to the characteristics of a pump station and the hydraulic oil used by hydraulic rescue equipment. When the measured fluid flows through the sensor, the impeller is forced to rotate under the action of the fluid, the rotating speed of the impeller is in direct proportion to the average flow speed of the pipeline, and the rotation of the impeller periodically changes the magnetic resistance value of the magnetoelectric converter. The magnetic flux in the detecting coil is periodically changed along with the magnetic flux, so that a periodic induced potential, namely an electric pulse signal is generated, and after amplification and conversion, a corresponding current signal is output. The specific parameters are shown in Table 4.

TABLE 4 flow sensor parameter Table

The pressure sensor is used for detecting the pressure of a system during pump station testing and jack testing, and converting a monitoring signal into a current of 4-20 mA to transmit. Because the system testing pressure range covers the ultrahigh pressure of 63MPa, the measuring range of the pressure selecting sensor is 0-80 MPa, and the precision is 0.2%. The specific technical parameters are shown in Table 5.

TABLE 5 pressure sensor parameter table

The pump station detection of the utility model is divided into two detection modes, namely single-path pump station detection and two-path pump station detection. The execution process of the single-path pump station detection is the same as that of the two-path pump station detection, and when the two paths of pumps are detected simultaneously, the system acquires and displays the test data of the two paths and the flow data of the two paths simultaneously. The detection parameters are pressure, flow, power and the like, and the detection items are a pressure flow test, a pressure maintaining test and the like.

The pressure flow test process of the utility model is as follows: during testing, a mouse clicks a 'start' button, a tester adjusts a loading valve of a pump station test control loop, system pressure changes along with the button, an industrial personal computer collects and records pressure and flow values in the loop, and meanwhile real-time power, maximum power and maximum flow of the pump station are calculated. The principle flow of the test procedure is shown in fig. 6.

The pump station pressure maintaining test process of the utility model is as follows: when the pump station pressure maintaining test is carried out, a stop valve in a test loop needs to be closed firstly, a pump station is started, the output pressure of the pump station is adjusted to be the rated pressure (63 MPa), when the pressure is stable, the pump is stopped and the pressure is maintained, a pressure maintaining test button of a software interface is clicked, and countdown and system pressure drop are displayed on a display screen. And prompting the numerical value of the pressure drop of the system after the countdown is finished. The principle flow of the test procedure is shown in fig. 7. In order to prevent error operation in the test process and improve the test efficiency, an operation prompt area is designed on a software interface and is explained one by one according to the operation links and the sequence.

The utility model mainly realizes that the detection test of the hydraulic pump station is suitable for various pump stations, including a low-pressure pump station, a medium-pressure pump station, a high-pressure pump station, an ultra-high pressure pump station within 120MPa, and a two-stage pump station with high-pressure and low-pressure oil supply; the detection indexes are comprehensive, including flow, pressure, power, sealing and pressure maintaining tests and the like; the flow detection range is wide, and the ultrahigh pressure flow detection of the high-pressure plunger pump as small as 0.2L/min can be met, and the flow detection of the low-pressure gear pump as large as 8.3L/min can be met. The device has the function of detecting and calculating the real-time output power of the pump station, and can calculate the working efficiency of the tested pump station under different pressures. An automatic pressure maintaining test function and a pump station real-time output power calculation function are designed. And the pump station pressure maintaining performance within 120 seconds of the pressure maintaining test is automatically detected through an industrial personal computer program arranged in the testing device. And calculating the data of the pump station in the test process in real time, and storing the test structure in a database after the test is finished, so that a test report can be printed at any time. During the test, in order to prevent the oil inlet pipe and the oil outlet pipe from being reversely connected to cause equipment damage, the oil inlet and outlet module is designed, so that high-pressure oil of the reversely connected oil inlet pipe directly flows back to the test pump station, and the damage to the detection device and the personal danger hidden danger to detection personnel caused by misoperation are effectively prevented. Use the foldable protective cover of transparent explosion-proof material design on the testing arrangement test bench, upwards turn up when carrying out the pump station test, the total height exceeds the tester height, prevents that oil pipe from bursting or the pump station from spouting the bodily injury that hydraulic oil or part lead to because of the superhigh pressure.

Compared with the existing oil cylinder test board, the utility model has the following characteristics: 1. the detection function is abundant, and the detection function of pump station flow, working pressure, withstand pressure and power is realized. 2. The device has strong safety and has the function of protecting the personal safety of testers. 3. The flow measurement range is wide, the testing function of low-pressure flow, medium-high pressure flow, high-pressure flow and ultrahigh pressure flow is realized, and the whole process of ultrahigh pressure pump station from low-pressure large flow to ultrahigh pressure small flow can be continuously detected. 4. The sealing performance and the pressure tolerance pressure detection are realized, and the automatic timing, the automatic detection of the pressure and the descending amplitude of the pump station system are realized by a computer. 5. The system automatically generates a detection report.

It should be noted that, regarding the specific structure of the present invention, the connection relationship between the modules of each component adopted in the present invention is determined and can be achieved, except for the specific description in the embodiment, the specific connection relationship can bring corresponding technical effects, and the technical problem proposed by the present invention is solved on the premise of not depending on the execution of corresponding software programs, the types and connection manners of the components, modules and specific components in the present invention, except for the specific description, all belong to the prior art such as published patents, published papers and periodicals, or common general knowledge that can be acquired by the technicians in the field before the application date, and no description is needed, so that the technical solution provided by the present application is clear, complete and achievable, and the corresponding entity product can be reproduced or obtained according to the technical means.

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 utility model 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; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a hydraulic pumping station safety inspection device, includes the pump station that awaits measuring, its characterized in that: the testing control platform comprises a protective cover and a box body, an industrial personal computer and a stabilized voltage power supply are arranged in the box body, the back face of the box body is provided with an oil inlet and outlet interface module, the oil inlet and outlet interface module comprises an oil inlet, an oil return port and a testing loop pipeline, an oil inlet pipe of the tested pump station is connected with an oil inlet of the testing control platform, an oil outlet pipe of the tested pump station is connected with an oil return port of the testing control platform, a stop valve and a loading valve are sequentially arranged on the testing loop pipeline of the oil inlet and outlet interface module, a pressure sensor and a flow sensor are further arranged on the testing loop pipeline, the pressure sensor and the flow sensor are respectively connected with the industrial personal computer through an AD data acquisition conversion module, and the stop valve, the loading valve and the control end of the pump station to be tested are respectively connected with the industrial personal computer through leads, the industrial personal computer is further connected with a display and a printer through a lead, and a power supply end of the industrial personal computer is connected with power frequency 220V alternating current through a stabilized voltage power supply.

2. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: the oil inlet and outlet interface modules are specifically provided with two groups, the back surface of the box body is provided with two oil inlets and two oil return ports, and each group of oil inlets and oil return ports are respectively connected with respective test loop pipelines.

3. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: and air holes are formed in two sides of the box body.

4. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: and a one-way valve is arranged in the oil inlet and outlet interface module, and the flow direction of the one-way valve flows in from the oil inlet and flows out from the oil return port.

5. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: the inside printer that still is provided with of box, the printer passes through the wire and links to each other with the industrial computer.

6. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: the protective cover is made of transparent explosion-proof materials.

7. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: the flow sensor is a turbine flow sensor.

8. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: and the industrial personal computer is also connected with the acquisition card through a wire.

9. The safety detection device for the hydraulic pumping station according to claim 1, characterized in that: the box is internally provided with a socket, an electric appliance box is arranged in the box and close to the back plate, and a stop valve and a loading valve are arranged in the electric appliance box.