CN209296252U - A kind of solenoid valve leakproofness experimental bench - Google Patents

Abstract

The utility model discloses a kind of solenoid valve leakproofness experimental benches, including bottom plate, gas tank is equipped at the top of the bottom plate, the gas tank bottom is equipped with fixed border, the fixed border is bolted to connection with the bottom plate, and the gas tank is flexibly connected with the bottom plate by the fixed border, sealing cover is equipped at the top of the gas tank, normally open solenoid valve is equipped at the top of the sealing cover, pipe joint is equipped at the top of the normally open solenoid valve, the first appendix is equipped with inside the pipe joint, first appendix side is equipped with check valve, the check valve nesting is set on first appendix, and it is flexibly connected with first appendix by bolt, with good seal performance, it can guarantee the accuracy of test result, and it can be realized precisely using inlet flow meter, efficient test purpose, in addition this product also has The advantages that precision is high, stability is good, easy to operate, work efficiency is high.

Description

A kind of solenoid valve leakproofness experimental bench

Technical field

The utility model relates to experimental bench fields, are especially a kind of solenoid valve leakproofness experimental bench.

Background technique

Solenoid valve is electromagnetically controlled industrial equipment, is the automatic foundamental element for controlling fluid, belongs to execution Device, however it is not limited to hydraulic, pneumatic.Direction, flow, speed and the other parameters of medium are adjusted in industrial control system. Solenoid valve can cooperate different circuits to realize expected control, and the precision and flexibility that control can guarantee.Electromagnetism There are many kinds of valves, and different solenoid valves plays a role in the different location of control system, the most commonly used is check valve, safety valve, Directional control valve, speed-regulating valve etc..

Found by retrieval, the utility model of patent No. CN105353645B disclose a kind of solenoid valve experimental provision and Test method includes host computer, Rapidpro module, solenoid valve, INCA and several pressure sensors, the signal output of host computer End connection Rapidpro module, the coil-end of the output end connection solenoid valve of Rapidpro module, pressure sensor are installed respectively In each output channel of solenoid valve, the output end of pressure sensor establishes connection by INCA and host computer.The present invention can To realize the verifying to vulgar magnetic valve performance is put.

However, the analysis found that, existing solenoid valve leakproofness experimental bench has the following disadvantages；First, sealing performance It is not good enough, it is easy to appear helium leak in the detection process and causes testing result inaccurate, second, testing result error is big, Detection efficiency is low；Third, stability is low, it is inconvenient.

Utility model content

Therefore, in order to solve above-mentioned deficiency, the utility model provides a kind of solenoid valve leakproofness experimental bench herein, has close Sealing property is good, can guarantee the accuracy of test result, and using inlet flow meter can be realized it is accurate, efficiently test mesh , in addition this product also has many advantages, such as that precision is high, stability is good, easy to operate, work efficiency is high.

The utility model is realized in this way constructing a kind of solenoid valve leakproofness experimental bench, including a kind of sealing of solenoid valve Property experimental bench, including bottom plate is equipped with gas tank at the top of the bottom plate, and the gas tank bottom is equipped with fixed border, the fixed border It is bolted to connection with the bottom plate, and the gas tank is flexibly connected with the bottom plate by the fixed border, it is described It is equipped with sealing cover at the top of gas tank, normally open solenoid valve is equipped at the top of the sealing cover, is connect at the top of the normally open solenoid valve equipped with pipeline Mouthful, the first appendix is equipped with inside the pipe joint, first appendix side is equipped with check valve, and the check valve is nested It is set on first appendix, and is flexibly connected with first appendix by bolt, the normally open solenoid valve side Equipped with HM30 pressure sensor, the HM30 pressure sensor insertion is set in the gas tank, and is closely pasted with the gas tank Merge and fix, the gas tank side is equipped with the second appendix, and second appendix side is equipped with KOFLOC3760 flow sensing Device, the KOFLOC3760 flow sensor nesting are set on second appendix, and are passed through with second appendix Bolt is fixedly connected, and the gas tank side is equipped with working cylinder, and the working cylinder and the gas tank pass through second gas transmission Pipe connection, the working cylinder top are equipped with top pressure closure, and the side at the top of the working cylinder is respectively equipped with pressure and shows number Word instrument, timer and flow indication digital instrument, and the pressure numeroscope table and HM30 pressure sensor electricity Property connection, the flow indication digital instrument and the KOFLOC3760 flow sensor be electrically connected, and the pressure shows number Word instrument bottom, which is set respectively, power switch and test switch, and test switch is electrically connected with the normally open solenoid valve, The test switch bottom portion is respectively equipped with the first testing button, the second testing button, third testing button and the 4th testing button, The side of the working cylinder bottom is respectively equipped with left button under cylinder, button and cylinder lower right button on cylinder, the work Cylinder interior is respectively equipped with the first detection zone, the second detection zone, third detection zone and the 4th detection zone, and first detection zone The both ends of side are respectively equipped with the first intake valve and first row air valve, and the both ends of second detection zone side are respectively equipped with second Intake valve and second row air valve, the both ends of third detection zone side are respectively equipped with third intake valve and third exhaust valve, institute The both ends for stating the 4th detection zone side are respectively equipped with the 4th intake valve and the 4th exhaust valve, and described state the first detection zone, second Be equipped with workpiece interface inside detection zone, third detection zone and the 4th detection zone, and first intake valve, the second intake valve, Third intake valve and the 4th intake valve respectively with first testing button, the second testing button, third testing button and the 4th Testing button is electrically connected.

As an improvement of the above technical solution, a kind of solenoid valve leakproofness experimental bench, the normally open solenoid valve and HM30 pressure Force snesor bottom is respectively equipped with the first gasket and the second gasket, and first gasket and the second gasket, which cover, to be set It is placed on the gas tank, and fits closely and fix with the gas tank, pass through the first gasket and the second gasket energy of setting Enough gap sealings by gas tank are good, the leakproofness of gas tank improved, to improve measurement accuracy.

As an improvement of the above technical solution, a kind of solenoid valve leakproofness experimental bench, the solenoid valve leakproofness experimental bench Test pressure is 0.8~1MPa, and measurement range is 0~20SCCM, and measurement accuracy is ± 1.5%F.S, and operating temperature is 5~45 DEG C, which uses import high precision flow, using industrial nitrogen as medium, according to three law principles, surveys through inflation, pressure maintaining Examination, deflation course are to realize accurate, efficient test purpose.

As an improvement of the above technical solution, a kind of solenoid valve leakproofness experimental bench, the KOFLOC3760 flow sensing The supply voltage of device is ± 15V, and output signal is 0~5V, and measurement range is 0~20SCCM, and measurement accuracy is ± 1.5%F.S, Operating temperature is 5~45 DEG C, and the supply voltage of the HM30 pressure sensor is DC24V, output signal 4-20mA, measures model It encloses for 1Mpa, improves the accuracy of experiment detection by improving the detection accuracy of flow sensor and pressure sensor.

The utility model provides a kind of solenoid valve leakproofness experimental bench by improving herein, real with existing solenoid valve leakproofness It tests platform to compare, have the advantages that with good seal performance, can guarantee the accuracy of test result, and use inlet flow Meter can be realized accurate, efficient test purpose, and in addition this product also has that precision is high, stability is good, easy to operate, work The advantages that high-efficient, embodies are as follows:

Advantage 1: the normally open solenoid valve and HM30 pressure sensor bottom are respectively equipped with the first gasket and the second sealing Pad, first gasket and the second gasket are covered and are set on the gas tank, and are fitted closely and consolidated with the gas tank It is fixed, can be good by the gap sealing of gas tank by the first gasket of setting and the second gasket, the leakproofness of gas tank is improved, from And improve measurement accuracy.

Advantage 2: the test pressure of the solenoid valve leakproofness experimental bench is 0.8~1MPa, and measurement range is 0~20SCCM, Measurement accuracy is ± 1.5%F.S, and operating temperature is 5~45 DEG C, which uses import high precision flow, with Industrial Nitrogen Gas is medium, according to three law principles, through inflation, pressure maintaining test, deflation course to realize accurate, efficient test purpose.

Advantage 3: the test pressure of the solenoid valve leakproofness experimental bench is 0.8~1MPa, and measurement range is 0~20SCCM, Measurement accuracy is ± 1.5%F.S, and operating temperature is 5~45 DEG C, which uses import high precision flow, with Industrial Nitrogen Gas is medium, according to three law principles, through inflation, pressure maintaining test, deflation course to realize accurate, efficient test purpose.

Detailed description of the invention

Fig. 1 is a kind of solenoid valve leakproofness experimental bench structural schematic diagram of the utility model；

Fig. 2 is a kind of working cylinder partial structural diagram of solenoid valve leakproofness experimental bench of the utility model；

Fig. 3 is a kind of work flow diagram of solenoid valve leakproofness experimental bench of the utility model.

Serial number as shown in the figure: bottom plate 1, gas tank 2, fixed border 3, sealing cover 4, normally open solenoid valve 5, the first gasket 6, pipe Pipeline joint 7；First appendix 8, check valve 9, HM30 pressure sensor 10, the second gasket 11, the second appendix 12, KOFLOC3760 flow sensor 13, working cylinder 14, top pressure closure 15, pressure numeroscope table 16, timer 17, flow Numeroscope table 18, power switch 19, test switch 20, the first testing button 21, the second testing button 22, third test are pressed Left button 25 under button 23, the 4th testing button 24, cylinder, right button 27 under button 26, cylinder on cylinder, the first intake valve 28, First detection zone 29, first row air valve 30, workpiece interface 31, the second intake valve 32, the second detection zone 33, second row air valve 34, Third intake valve 35, third detection zone 36, third exhaust valve 37, the 4th intake valve 38, the 4th detection zone 39, the 4th exhaust valve 40。

Specific embodiment

The utility model is described in detail below in conjunction with attached drawing 1- Fig. 3, to the skill in the utility model embodiment Art scheme is clearly and completely described, it is clear that and the described embodiments are only a part of the embodiments of the utility model, and The embodiment being not all of.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creativeness Every other embodiment obtained, fall within the protection scope of the utility model under the premise of labour.

The utility model provides a kind of solenoid valve leakproofness experimental bench by improving herein, as shown in Figure 1-Figure 3, can be by It is practiced according to such as under type；Including a kind of solenoid valve leakproofness experimental bench, including bottom plate 1, gas tank 2, gas are equipped at the top of bottom plate 1 2 bottom of tank is equipped with fixed border 3, and fixed border 3 is bolted to connection with bottom plate 1, and gas tank 2 and bottom plate 1 pass through fixation Frame 3 is flexibly connected, and sealing cover 4 is equipped at the top of gas tank 2, normally open solenoid valve 5 is equipped at the top of sealing cover 4, normally open solenoid valve 5 pushes up Portion is equipped with pipe joint 7, and the first appendix 8 is equipped with inside pipe joint 7, and 8 side of the first appendix is equipped with check valve 9, unidirectionally 9 nesting of valve is set on the first appendix 8, and is flexibly connected with the first appendix 8 by bolt, and 5 side of normally open solenoid valve is set There is HM30 pressure sensor 10, the insertion of HM30 pressure sensor 10 is set in gas tank 2, and is fitted closely and fixed with gas tank 2, 2 side of gas tank is equipped with the second appendix 12, and 12 side of the second appendix is equipped with KOFLOC3760 flow sensor 13, 13 nesting of KOFLOC3760 flow sensor is set on the second appendix 12, and with 12 company of being bolted of the second appendix It connects, 2 side of gas tank is equipped with working cylinder 14, and working cylinder 14 is connected to gas tank by the second appendix 12, and working cylinder 14 pushes up Portion is equipped with top pressure closure 15, and the side at 14 top of working cylinder is respectively equipped with pressure numeroscope table 16, timer 17 and stream Numeroscope table 18 is measured, and pressure numeroscope table 16 and HM30 pressure sensor 10 are electrically connected, flow indication number Instrument 18 and KOFLOC3760 flow sensor 13 are electrically connected, and 16 bottom of pressure numeroscope table is set power switch respectively 19 and test switch 20, and test switch 20 and normally open solenoid valve 5 electric connection, test 20 bottom of switch be respectively equipped with the first survey Try button 21, the second testing button 22, third testing button 23 and the 4th testing button 24, the side point of 14 bottom of working cylinder Not She You left button 25 under cylinder, button 26 and cylinder lower right button 27 on cylinder, be respectively equipped with first inside working cylinder 14 Detection zone 29, the second detection zone 33, third detection zone 36 and the 4th detection zone 39, and the both ends difference of 29 side of the first detection zone Equipped with the first intake valve 28 and first row air valve 30, the both ends of 33 side of the second detection zone are respectively equipped with the second intake valve 32 and Two exhaust valves 34, the both ends of 36 side of third detection zone are respectively equipped with third intake valve 35 and third exhaust valve 37, the 4th detection The both ends of 39 side of area are respectively equipped with the 4th intake valve 38 and the 4th exhaust valve 40, and state the first detection zone 29, the second detection zone 33, workpiece interface 31, and the first intake valve 28, the second intake valve are equipped with inside third detection zone 36 and the 4th detection zone 39 32, third intake valve 35 and the 4th intake valve 38 respectively with the first testing button 21, the second testing button 22, third testing button 23 and the 4th testing button 24 be electrically connected.

Normally open solenoid valve 5 and 10 bottom of HM30 pressure sensor are respectively equipped with the first gasket 6 and the second gasket 11, the One gasket 6 and the second gasket 11, which cover, to be set on gas tank 2, and is fitted closely and fixed with gas tank 2, and setting is passed through First gasket 6 and the second gasket 11 can be good by the gap sealing of gas tank 2, the leakproofness of gas tank 2 improved, to improve survey Accuracy of measurement.

The test pressure of the solenoid valve leakproofness experimental bench is 0.8~1MPa, and measurement range is 0~20SCCM, measurement essence Degree is ± 1.5%F.S, and it is to be situated between with industrial nitrogen that operating temperature, which is 5~45 DEG C, which uses import high precision flow Matter, according to three law principles, through inflation, pressure maintaining test, deflation course to realize accurate, efficient test purpose.

The supply voltage of KOFLOC3760 flow sensor 13 be ± 15V, output signal be 0~5V, measurement range be 0~ 20SCCM, measurement accuracy are ± 1.5%F.S, and operating temperature is 5~45 DEG C, and the supply voltage of HM30 pressure sensor 10 is DC24V, output signal 4-20mA, measurement range 1Mpa, by the detection essence for improving flow sensor and pressure sensor It spends to improve the accuracy of experiment detection.

A kind of working principle of solenoid valve leakproofness experimental bench: after connecting gas source, pressing the energization of 19 equipment of power switch, Initial nitrogen pressure and the stream in system are shown on pressure numeroscope table 16 and flow indication digital instrument 18 simultaneously Magnitude.Equipment is before opening test switch 20, and normally open solenoid valve 5 is in the open state, and four branch air inlet valve positions are in closing State, four branch exhaust valves are in the open state, and gas replenishment process is to connect aerobic source, and gas source passes through check valve 9, normally open solenoid valve 5 are filled with nitrogen to gas tank 2, and 8kg air pressure is filled in gas tank, in pressure numeroscope table 16 and flow indication digital instrument 18 On show initial nitrogen pressure and flow value in system, pressure maintaining test process: workpiece for measurement is mounted in detection zone, so Left button 25 and cylinder lower right button 27 under cylinder are pressed simultaneously afterwards, falls working cylinder 14, opens test switch 20, normally opened electromagnetism Valve 5 is closed, cutting system and external air source circuit, to guarantee that nitrogen pressure improves system and stablize not by external disturbance in system Property, after a period of stabilisation to system, stablize if system pressure value is shown, flow value zero, then institute's test piece leakproofness Well, if flow value is not zero, and pressure value is on a declining curve, then has gas leakage workpiece in surveyed workpiece, closes workpiece 1 Road does not decline if flow value is not zero, and 1 leakproofness of workpiece is good；If flow value is zero, workpiece 2 is closed in workpiece gas leakage Branch does not decline if flow value is not zero, and 2 leakproofness of workpiece is good；If flow value is zero, work is closed in workpiece gas leakage 3 branch of part, does not decline if flow value is not zero, and 3 leakproofness of workpiece is good；If flow value is zero, workpiece gas leakage is closed 4 branch of workpiece, does not decline if flow value is not zero, and 4 leakproofness of workpiece is good；If flow value is zero, workpiece gas leakage is put Gas process: closing test switch 20, and four branch intake valves are closed, and cuts off four branch gas circuits, and exhaust open excludes in tooling workpiece Remaining nitrogen, while normally open solenoid valve 5 is opened, again to enough nitrogen is filled with inside gas tank 2, in case being used when test next time.

In summary；A kind of solenoid valve leakproofness experimental bench of the utility model, with existing solenoid valve leakproofness experimental bench phase Than that can guarantee the accuracy of test result with good seal performance, and it is accurate, efficient to use inlet flow meter can be realized Test purpose, in addition this product also has many advantages, such as that precision is high, stability is good, easy to operate, work efficiency is high.

The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein The widest scope consistent with features of novelty.

Claims (4)

1. a kind of solenoid valve leakproofness experimental bench, it is characterised in that: including bottom plate (1), gas tank is equipped at the top of the bottom plate (1) (2), gas tank (2) bottom is equipped with fixed border (3), the fixed border (3) and the bottom plate (1) company of being bolted It connects, and the gas tank (2) is flexibly connected with the bottom plate (1) by the fixed border (3), is equipped at the top of the gas tank (2) Sealing cover (4), sealing cover (4) top are equipped with normally open solenoid valve (5), connect at the top of the normally open solenoid valve (5) equipped with pipeline Mouth (7), the pipe joint (7) is internal to be equipped with the first appendix (8), and the first appendix (8) side is equipped with check valve (9), check valve (9) nesting is set on first appendix (8), and passes through bolt with first appendix (8) It is flexibly connected, normally open solenoid valve (5) side is equipped with HM30 pressure sensor (10), and the HM30 pressure sensor (10) is embedding Enter to be set in the gas tank (2), and fit closely and fix with the gas tank (2), it is defeated that gas tank (2) side is equipped with second Tracheae (12), the second appendix (12) side are equipped with KOFLOC3760 flow sensor (13), the KOFLOC3760 stream Quantity sensor (13) nesting is set on second appendix (12), and is bolted with second appendix (12) Connection, gas tank (2) side are equipped with working cylinder (14), and the working cylinder (14) and the gas tank (2) pass through described the Two appendixs (12) connection, working cylinder (14) top is equipped with top pressure closure (15), at the top of the working cylinder (14) Side is respectively equipped with pressure numeroscope table (16), timer (17) and flow indication digital instrument (18), and the pressure Numeroscope table (16) and the HM30 pressure sensor (10) are electrically connected, the flow indication digital instrument (18) and institute KOFLOC3760 flow sensor (13) electric connection is stated, bottom is set the pressure numeroscope table (16) has power supply to open respectively (19) and test switch (20) are closed, and test switch (20) and the normally open solenoid valve (5) is electrically connected, the test is opened It closes (20) bottom and is respectively equipped with the first testing button (21), the second testing button (22), third testing button (23) and the 4th survey It tries button (24), the side of working cylinder (14) bottom is respectively equipped with left button under cylinder (25), button (26) on cylinder With cylinder lower right button (27), be respectively equipped with inside the working cylinder (14) the first detection zone (29), the second detection zone (33), Third detection zone (36) and the 4th detection zone (39), and the both ends of first detection zone (29) side are respectively equipped with the first air inlet Valve (28) and first row air valve (30), the both ends of the second detection zone (33) side are respectively equipped with the second intake valve (32) and The both ends of two exhaust valves (34), third detection zone (36) side are respectively equipped with third intake valve (35) and third exhaust valve (37), the both ends of the 4th detection zone (39) side are respectively equipped with the 4th intake valve (38) and the 4th exhaust valve (40), and institute It states and is equipped with work inside the first detection zone (29), the second detection zone (33), third detection zone (36) and the 4th detection zone (39) Part interface (31), and first intake valve (28), the second intake valve (32), third intake valve (35) and the 4th intake valve (38) Respectively with first testing button (21), the second testing button (22), third testing button (23) and the 4th testing button (24) it is electrically connected.

2. a kind of solenoid valve leakproofness experimental bench according to claim 1, it is characterised in that: the normally open solenoid valve (5) and HM30 pressure sensor (10) bottom is respectively equipped with the first gasket (6) and the second gasket (11), first gasket (6) It covers and is set on the gas tank (2) with the second gasket (11), and fit closely and fix with the gas tank (2).

3. a kind of solenoid valve leakproofness experimental bench according to claim 1, it is characterised in that: the solenoid valve leakproofness experimental bench Test pressure be 0.8~1MPa, measurement range be 0~20SCCM, measurement accuracy be ± 1.5%F.S, operating temperature be 5~ 45℃。

4. a kind of solenoid valve leakproofness experimental bench according to claim 1, it is characterised in that: the KOFLOC3760 flow passes The supply voltage of sensor (13) be ± 15V, output signal be 0~5V, measurement range be 0~20SCCM, measurement accuracy be ± 1.5%F.S, operating temperature are 5~45 DEG C, and the supply voltage of the HM30 pressure sensor (10) is DC24V, and output signal is 4-20mA, measurement range 1Mpa.