CN206191274U - Large -traffic auto -feed -gas testing system - Google Patents

Abstract

The utility model discloses a large -traffic auto -feed -gas testing system, the one end that supplies gas source device is equipped with the filter, the one end of filter has first manometer, a pressure sensor and first electromagnetism gas accuse valve through the pipe connection, upper end one side of first electromagnetism gas accuse valve is connected with the drive air supply, the one end of drive air supply is connected with electronic pressure controller, electronic pressure controller's one end is connected with the pneumatics proportional valve, electronic pressure controller's one end electric connection has the 2nd pressure sensor, pneumatics proportional valve and first electromagnetism gas accuse valve one end all are connected with air chamber load valve, the one end of hand stop valve is connected with the check valve, controlling means and data acquisition device electric connection show the computer, this large -traffic auto -feed -gas testing system adopts automatic control, carries out remote operation, has ensured system security, reliability.

Description

A kind of big flow automatic feeding pilot system

Technical field

The utility model belongs to carrier rocket pressurizing transmission system technical field, and in particular to a kind of big flow automatic feeding Pilot system.

Background technology

With developing rapidly for China's space flight level, 45MPa high pressure valves are progressively applied, existing supply experiment system System is typically high pressure low discharge or low-pressure high flow capacity, it is difficult to meet the experimental condition of current high-pressure high-flow, many institute's weeks Know, experiment is that valve design production completes an essential step to be detected to valve, therefore big flow supplies pilot system Development and production have turned into inexorable trend.

Utility model content

The purpose of this utility model is to provide a kind of big flow automatic feeding pilot system, to solve above-mentioned background technology The problem of middle proposition.

To achieve the above object, the utility model provides following technical scheme：A kind of big flow automatic feeding pilot system, Including gas source device, filter, first pressure table, first pressure sensor, the first electromagnetism Pneumatic valve, driving source of the gas, electronics Pressure controller, pneumatics proportioning valve, air chamber negative valve, second pressure table, second pressure sensor, safety valve, the second electromagnetism gas Control valve, outer air supply opening, hand stop valve, check valve, muffler, control device, data acquisition device and display computer, it is described One end of gas source device is provided with filter, and one end of the filter is connected with first pressure table, first pressure by pipeline Sensor and the first electromagnetism Pneumatic valve, the upper end side of the first electromagnetism Pneumatic valve are connected with driving source of the gas, the driving gas The one end in source is connected with electronic pressure controller, and one end of the electronic pressure controller is connected with pneumatics proportioning valve, the electricity One end of sub- pressure controller is electrically connected with second pressure sensor, the pneumatics proportioning valve and first electromagnetism Pneumatic valve one end Air chamber negative valve is respectively connected with, one end of the air chamber negative valve is connected with second pressure table, second pressure sensor, safety valve With the second electromagnetism Pneumatic valve, one end of the second electromagnetism Pneumatic valve is connected to outer air supply opening and hand stop valve, described One end of hand stop valve is connected with check valve, the first pressure sensor, the first electromagnetism Pneumatic valve, electron pressure control Device, second pressure sensor and the second electromagnetism Pneumatic valve are electrically connected with control device and data acquisition device, the control dress Put and be electrically connected with display computer with data acquisition device.

Preferably, the control device is made up of PLC control unit.

Preferably, one end of the check valve is provided with muffler.

Technique effect of the present utility model and advantage：The big flow automatic feeding pilot system is carried out using automatically controlling Remote operation, it is ensured that the safe and reliable property of system.

Brief description of the drawings

Fig. 1 is principle schematic of the present utility model；

In figure：1st, air supply source, 2, filter, 3, pressure gauge, 4, pressure sensor, 5, electromagnetism Pneumatic valve, 6, drive source of the gas, 7th, electronic pressure controller, 8, pneumatics proportioning valve, 9, air chamber negative valve, 10, pressure gauge, 11, pressure sensor, 12, safety valve, 13rd, electromagnetism Pneumatic valve, 14, outer air supply opening, 15, hand stop valve, 16, check valve, 17, muffler, 18, control device, 19, number According to harvester, 20, display computer.

Specific embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made The every other embodiment for being obtained, belongs to the scope of the utility model protection.

The utility model provides a kind of big flow automatic feeding pilot system as shown in Figure 1, including gas source device 1st, filter 2, first pressure table 3, first pressure sensor 4, the first electromagnetism Pneumatic valve 5, driving source of the gas 6, electron pressure control Device 7, pneumatics proportioning valve 8, air chamber negative valve 9, second pressure table 10, second pressure sensor 11, safety valve 12, the second electromagnetism gas Control valve 13, outer air supply opening 14, hand stop valve 15, check valve 16, muffler 17, control device 18, the and of data acquisition device 19 Display computer 20, one end of the gas source device 1 is provided with filter 2, and one end of the filter 2 is connected with by pipeline First pressure table 3, the electromagnetism Pneumatic valve 5 of first pressure sensor 4 and first, the upper end side of the first electromagnetism Pneumatic valve 5 connect Driving source of the gas 6 is connected to, described one end for driving source of the gas 6 is connected with electronic pressure controller 7, the electronic pressure controller 7 One end is connected with pneumatics proportioning valve 8, and one end of the electronic pressure controller 7 is electrically connected with second pressure sensor 11, institute State the one end of 8 and first electromagnetism Pneumatic valve of pneumatics proportioning valve 5 and be respectively connected with air chamber negative valve 9, one end of the air chamber negative valve 9 connects It is connected to second pressure table 10, second pressure sensor 11, the electromagnetism Pneumatic valve 13 of safety valve 12 and second, the second electromagnetism gas control One end of valve 13 is connected to outer air supply opening 14 and hand stop valve 15, and one end of the hand stop valve 15 is connected with unidirectionally Valve 16, one end of the check valve 16 is provided with muffler 17, the first pressure sensor 4, the first electromagnetism Pneumatic valve 5, electronics Pressure controller 7, the electromagnetism Pneumatic valve 13 of second pressure sensor 11 and second are electrically connected with control device 18 and data acquisition Device 19, the control device 18 and data acquisition device 19 are electrically connected with display computer 20.

Operation principle：Air supply source 1 is used for providing the gas needed for rear class valve test system is tested, can be using compression The gas supply device such as machine supercharging or gas cylinders group, but to ensure its granularity (≤5u), oil content (≤0.3ppm), dew point (≤- 55 DEG C) three indexs；Filter filtering accuracy≤5u；First pressure table 3, second pressure table 10 are using taboo oil pressure Table, it is ensured that its range is 60MPa, and precision is more than 1.6 grades；On the panel of big flow automatic feeding pilot system, side Close-ups pressure when just testing；Electronic pressure controller 7, pneumatics proportioning valve 8 are combined into big stream with air chamber negative valve 9 Amount pressure-reducing valve, notices that its connecting interface will be connected correctly, and the import of pneumatics proportioning valve 8 is communicated with the import of air chamber negative valve 9, empty The outlet of pressure proportioning valve 8 is connected to the control mouth of air chamber negative valve 9, and electronic pressure controller 7 is connected to the control of pneumatics proportioning valve 8 Donsole；Check valve 16 is noted that check valve 16 and disappears for preventing gas backflow during system deflation when being connected with muffler 17 Connecting line latus rectum between sound device 17 will be far longer than the pipeline latus rectum before check valve, otherwise, it may appear that in check valve 16 Spring oscillation phenomenon back and forth, drives the bleed pressure of gas circuit between 0.6MPa~0.8MPa, is connected respectively to electromagnetism Pneumatic valve 5, electromagnetism Pneumatic valve 13, the control mouth of electronic pressure controller 7, three road driving gas can have source of the gas all the way to introduce, and be connected with one or four Head is divided into three tunnels, and described pressure gauge, pressure transmitter display system pressure simultaneously, pressure transmitter is used for data acquisition, The pressure after bleed pressure and pressure reducer decompression is preset in computer, after reaching required pressure, electromagnetism Pneumatic valve 5 receives electricity Signal auto-action, pressure of the pressure gauge as auxiliary intuitively in display system, by electronic pressure controller 7, pneumatics ratio Valve 8 and air chamber negative valve 9 are combined and used as automatic pressure reducing valve, by the pressure automatic pressure-reducing of air supply source to rear class valves test System demand pressure, automatic pressure reducing valve its latus rectum of electronic pressure controller 7, pneumatics proportioning valve 8 and air chamber negative valve combination It is DN25, more than pilot system pipeline latus rectum DN20, maximum stream flow reaches 3Kg/s, and electronic pressure controller 7 receives computer hair The electric signal for going out, while the feedback signal that pressure second sensor 11 is given is received, by controlling pneumatics proportioning valve 8 after calculating Delivery outlet pressure, and with this pressure as control pressure and then main airline pressure is controlled, form closed-loop control, pressure controling precision Height, is connected with safety valve 12 behind air chamber negative valve 9, improves the security performance of system, when the failure of air chamber negative valve 9 occurs event During barrier, pressure gauge and pressure transmitter pressure reach 1.08 times of maximum working pressure set by main supply road, and safety valve is out Protection rear class valve test system is opened, in big flow automatic feeding pilot system actual mechanical process, is passed through from air supply source 1 45MPa gases at high pressure, are processed by filter 2, and first pressure table 3 and first pressure sensor 4 show 45MPa, open Electromagnetism Pneumatic valve 5, electronic pressure controller 7 receives computer Setting signal, while receiving the feedback letter that pressure sensor is provided Number, the aperture by controlling pneumatics proportioning valve and air chamber negative valve 9 after calculating makes second pressure table 10 and pressure sensor 11 aobvious Show 23~37MPa pressure, open electromagnetism Pneumatic valve 13, level valve system is supplied backward by air supply opening 14, after having tested, close Above air supply source 1, opens hand stop valve 15, is deflated.

Finally it should be noted that：Preferred embodiment of the present utility model is the foregoing is only, this is not limited to Utility model, although being described in detail to the utility model with reference to the foregoing embodiments, for those skilled in the art For, it can still modify to the technical scheme described in foregoing embodiments, or to which part technical characteristic Equivalent is carried out, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvements made etc., Should be included within protection domain of the present utility model.

Claims (3)

1. a kind of big flow automatic feeding pilot system, including gas source device (1), filter (2), first pressure table (3), One pressure sensor (4), the first electromagnetism Pneumatic valve (5), driving source of the gas (6), electronic pressure controller (7), pneumatics proportioning valve (8), air chamber negative valve (9), second pressure table (10), second pressure sensor (11), safety valve (12), the second electromagnetism Pneumatic valve (13), outer air supply opening (14), hand stop valve (15), check valve (16), muffler (17), control device (18), data acquisition Device (19) and display computer (20), it is characterised in that：One end of the gas source device (1) is provided with filter (2), described One end of filter (2) is connected with first pressure table (3), first pressure sensor (4) and the first electromagnetism Pneumatic valve by pipeline (5), the upper end side of the first electromagnetism Pneumatic valve (5) is connected with driving source of the gas (6), and described one end for driving source of the gas (6) connects Electronic pressure controller (7) is connected to, one end of the electronic pressure controller (7) is connected with pneumatics proportioning valve (8), the electronics One end of pressure controller (7) is electrically connected with second pressure sensor (11), the pneumatics proportioning valve (8) and the first electromagnetism gas Control valve (5) one end is respectively connected with air chamber negative valve (9), one end of the air chamber negative valve (9) be connected with second pressure table (10), Second pressure sensor (11), safety valve (12) and the second electromagnetism Pneumatic valve (13), the one of the second electromagnetism Pneumatic valve (13) End is connected to outer air supply opening (14) and hand stop valve (15), and one end of the hand stop valve (15) is connected with check valve (16), the first pressure sensor (4), the first electromagnetism Pneumatic valve (5), electronic pressure controller (7), second pressure sensor And the second electromagnetism Pneumatic valve (13) is electrically connected with control device (18) and data acquisition device (19), the control device (11) (18) it is electrically connected with and shows computer (20) with data acquisition device (19).

2. a kind of big flow automatic feeding pilot system according to claim 1, it is characterised in that：The check valve (16) One end be provided with muffler (17).

3. a kind of big flow automatic feeding pilot system according to claim 1, it is characterised in that：The control device (18) it is made up of PLC control unit.