CN205879443U - Miniature intelligent atmospheric pressure interface module - Google Patents

Abstract

The utility model provides a miniature intelligent atmospheric pressure interface module, including the plinth, the plinth is equipped with the standard pressure module, is provided with gas -liquid separation chamber, pressure reference chamber, first solenoid valve and a plurality of airflow pipeline in the plinth, the plinth, has atmospheric pressure input connection face, articulate face and standard pressure module and connects the face to two cylinder structures of equidirectional extension not including being certain angle, and the atmospheric pressure input interface sets up on atmospheric pressure input connection face, pressure joint with refer to pressure joint and set up on the articulate face, standard pressure module assembly is on the standard pressure module is connected. The utility model discloses compact structure, simple to operate, standard pressure module that can cartridge different grade type, pressure instrument is examined to the quilt that is applicable to the different grade type to realize the function of filtration, gas -liquid separation, the automatic blowdown of exitting in validation process, guarantee the utility model discloses the reliable operation.

Description

A kind of intelligent miniature air pressure interface module

Technical field

This utility model belongs to pressure tool metering instrument calibration field, relates to one and is installed on automatization's pressure checking and sets Standby, for connecting the intelligent miniature air pressure interface module of tested instrument.

Background technology

When manometer is verified, generally make pressure, pressure control equipment by the pressure interface in pressure interface module even Receive tested instrument, standard scale or external gas piping, purpose manometer verified with realization.Existing automatization school Test the interface unit that the pressure interface of equipment is usually independent, be usually mounted to calibration equipment internal and interface unit is stretched out school Testing outside equipment, modular pressure is positioned at inside calibration equipment, or is arranged as independent gas circuit and the circuit of outside, only with interface unit Simply connecting or be directly connected on interface unit, the overall dimensions of interface unit and modular pressure is generally large.

Pressure interface module in existing pressure checking equipment generally nothing filters and/or gas-liquid separation device, thus After the tested manometer of complex environment work accesses, pollution or retaining pressure may be caused to connect with pollutant or impurity The pipeline of mouth die block；The liquid that tested manometer brings is likely to enter the pipeline of pressure interface module, is likely to result in pressure The consequences such as pressure transducer damage in module, internal duct corrosion, it is therefore desirable to the moisture in separate lines in time by water Divide and discharge.

Testing pressure instrument has different types, such as absolute pressure instrument, gauge pressure instrument and differential pressure meter, existing pressure Pressure interface module in calibration equipment is usually applicable only to the manometer of a certain type, uses inconvenience, and range of application is narrow.

The reliability of pressure interface module, miniaturization, range of application etc. are carried by the most portable or hand-held pressure checking equipment Go out higher requirement, a kind of met the miniaturization of demand, intellectuality in the urgent need to exploitation, be applicable to all kinds manometer Pressure interface module.

Utility model content

In order to solve the problems referred to above, this utility model provide a kind of compact conformation, volume is little, can realize filtering simultaneously, Gas-liquid separation, the intelligent miniature air pressure interface module of automatic deflation dirt eliminating function.

Above-mentioned purpose of the present utility model is realized by techniques below scheme:

A kind of intelligent miniature air pressure interface module, including plinth, plinth is equipped with normal pressure module, on plinth Being provided with compression fittings, pressure reference joint and air pressure input interface, air pressure input interface is by being positioned at the air-flow of plinth Pipeline is connected with compression fittings, pressure reference joint and normal pressure module, and described plinth includes at an angle to two First column structure of individual different directions extension and the second column structure, have three joint faces, the i.e. friendship of two column structures The place of connecing is provided with air pressure input joint face, and air pressure input interface is arranged on described air pressure input joint face；First column structure End is provided with joint joint face, described compression fittings and reference pressure joint and is arranged on described joint joint face；Second cylinder The end of structure is provided with normal pressure module joint face, and described normal pressure module is assemblied in described normal pressure module joint face On.

In above-mentioned intelligent miniature air pressure interface module, inside described plinth, it is additionally provided with pressure reference chamber, gas-liquid separation chamber With the first electromagnetic valve, the first electromagnetic valve is arranged between described compression fittings and gas-liquid separation chamber, and compression fittings passes through the first gas Flow tube road connects with gas-liquid separation chamber with first electromagnetic valve the second passage, and described gas-liquid separation chamber is directly and air pressure input interface Connection；Gas-liquid separation chamber is connected with pressure reference chamber by the first electromagnetic valve and the 4th airflow pipeline, pressure reference chamber and pressure It is connected with reference to joint.

In above-mentioned intelligent miniature air pressure interface module, the outside of described gas-liquid separation chamber is sealed by an air escape valve seat, puts Air valve seat is internally provided with the second electromagnetic valve, and second electromagnetic valve the second passage 45 of the second electromagnetic valve 29 is by an airflow pipeline 40 connect with gas-liquid separation chamber 26, and the first passage 44 of the second electromagnetic valve 29 is connected with air.

In above-mentioned intelligent miniature air pressure interface module, the internal port position of described compression fittings and pressure reference joint is divided It is not provided with filter.

In above-mentioned intelligent miniature air pressure interface module, the normal pressure module joint face of described plinth is provided with a mould Block pressure interface and a module pressure referenced interface, module pressure referenced interface directly connects with pressure reference chamber, module pressure Interface is connected with gas-liquid separation chamber by one the 3rd airflow pipeline.

In above-mentioned intelligent miniature air pressure interface module, the normal pressure module joint face of described plinth is also equipped with mark Quasi-modular pressure mounting seat, described normal pressure module mounting seat is to have the column structure of through hole, and described through hole is L-shaped step Hole, the deeper side of L-shaped stepped hole is connected with the normal pressure module mounting seat joint face of plinth, and L-shaped stepped hole is shallower Being provided with a groove on the step of side, described groove top is provided with second circuit board, and communication plug is through described groove and the Two circuit board electrical connections, a socket is electrically connected to described communication plug.

In above-mentioned intelligent miniature air pressure interface module, described normal pressure module is differential pressure module, and differential pressure module is from described In normal pressure module mounting seat, plug-in mounting is on plinth, and the module pressure of the pressure interface plug-in mounting of differential pressure module to plinth connects In Kou, in pressure reference interface plug-in mounting to module pressure referenced interface, the sealing ring of differential pressure module is to above-mentioned each interface connection Formed seal, in the communication plug plug-in mounting on plinth to the socket communication of differential pressure module, the first circuit board of differential pressure module with Second circuit board electrical connection on plinth, differential pressure module is fixed on plinth by the screw that do not takes off of differential pressure module.

In above-mentioned intelligent miniature air pressure interface module, described normal pressure module is absolute pressure module, the pressure of absolute pressure module Interface plug-in mounting is in the module pressure interface of plinth, and above-mentioned interface connection is formed and seals by the sealing ring of absolute pressure module, connects Communication plug plug-in mounting on headstock in the socket communication of absolute pressure module, the first circuit board of absolute pressure module and the on plinth Two circuit board electrical connections, absolute pressure module is fixed on plinth by the screw that do not takes off of modular pressure.

In above-mentioned intelligent miniature air pressure interface module, described normal pressure module is gauge pressure module, the pressure of gauge pressure module Interface plug-in mounting is in the module pressure interface of plinth, and above-mentioned interface connection is formed and seals by the sealing ring of gauge pressure module, connects Communication plug plug-in mounting on headstock in the socket communication of gauge pressure module, the first circuit board of gauge pressure module and the on plinth Two circuit board electrical connections, gauge pressure module is fixed on plinth by the screw that do not takes off of modular pressure.

This utility model uses technique scheme, obtains techniques below effect: this utility model can plug-in mounting inhomogeneity The normal pressure module (differential pressure module, absolute pressure module or gauge pressure module) of type, it is adaptable to different types of tested manometer, and Filtration, gas-liquid separation, the function of automatic deflation blowdown is realized, it is ensured that utility model works is reliable in checking procedure；Pass through Ingenious layout compression fittings/pressure reference joint, normal pressure module mounting seat, the position of air pressure input interface and structure, make Obtain this utility model compact conformation, easy for installation, it is simple to install or standard of replacement modular pressure.

Accompanying drawing explanation

Fig. 1 is the front view of intelligent miniature air pressure interface module of the present utility model；

Fig. 2 is the sectional view intercepted along line A-A in Fig. 1；

Fig. 3 is the left view of intelligent miniature air pressure interface module of the present utility model；

Fig. 4 is the partial section's (being provided with the normal pressure module shown in Fig. 8) intercepted along line B-B in Fig. 1；

Fig. 5 is the partial section's (being provided with the normal pressure module shown in Fig. 6) intercepted along line B-B in Fig. 1；

Fig. 6 is the structure sectional view of the embodiment one of normal pressure module；

Fig. 7 is the upward view of the embodiment one of normal pressure module；

Fig. 8 is the structure sectional view of the embodiment two of normal pressure module；

Fig. 9 is the upward view of the embodiment two of normal pressure module.

In figure, reference is expressed as:

50: normal pressure module；01: pedestal, 02: first circuit board, 03: base seat lid, 04: sealing ring, 05: pressure connects Mouthful, 06；Do not take off screw, 07: pressure transducer, 08: socket communication, 09: sealing gasket, 10: waterproof ventilated membrane, 11: passage, 12: pressure ring, 13: screw；14: pressure reference interface；

21: plinth, 22: compression fittings, 23: air escape valve seat, 24: second circuit board, 25: normal pressure module is installed Seat, 26: gas-liquid separation chamber, 27: pressure reference chamber, 28: the first electromagnetic valves, 29: the second electromagnetic valves, 30: socket, 31: communication is inserted Head, 32: filter, 33: pressure reference joint, 34: air pressure input interface, 35: module pressure interface, 36: module pressure reference Interface, 37: end cap, 38: the three airflow pipelines, 39: the four airflow pipelines, 40: the first airflow pipelines, 41: the second airflow pipelines, 42: the first electromagnetic valve the first passages, 43: the first electromagnetic valve the second passages, 44: the second electromagnetic valve the first passages, 45: the Two electromagnetic valve the second passages, 46: installing hole.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, intelligent miniature air pressure interface module of the present utility model is carried out specifically Bright.

Referring to figs. 1 through Fig. 3, for the topology example of this utility model intelligent miniature air pressure interface module.As it is shown in figure 1, this The intelligent miniature air pressure interface module of utility model includes whole air pressure module rises plinth 21 and the mark supporting interconnection function Quasi-modular pressure mounting seat 25, wherein, plinth 21 includes two cylinders extended at an angle to two different directions Structure, the i.e. first column structure and the second column structure, plinth 21 has three joint faces, and the junction of two column structures sets Air pressure is had to input joint face；The end of the first column structure is provided with joint joint face, for arranging the pressure connecting manometer Joint；The end of the second column structure is provided with normal pressure module joint face, for connection standard modular pressure 50 and standard pressure Power module mounting seat 25；Normal pressure module mounting seat 25 is the column structure with through hole, for connection standard modular pressure 50；The through hole of normal pressure module mounting seat 25 is L-shaped stepped hole, the standard of the deeper side of L-shaped stepped hole and plinth 21 Modular pressure mounting seat joint face connects, and the side step that L-shaped stepped hole is shallower is provided with a groove, is used for assembling communication and inserts 31.

As shown in Figures 2 and 3, the joint joint face of plinth 21 is provided with a compression fittings 22 and a pressure reference connects 33, it is respectively used to connect the pressure end of tested manometer and pressure reference end；It is provided with gas-liquid separation chamber in plinth 21 26, pressure reference chamber the 27, first electromagnetic valve 28 and multiple airflow pipeline, wherein, pressure reference chamber 27 is positioned at plinth 21 The side at pressure reference joint 33 place is also connected with pressure reference joint 33, for preventing reference point pressure from big ripple occurring Dynamic, covered by an end cap 37 outside pressure reference chamber 27 and seal, the two junction arranges sealing ring；Gas-liquid separation chamber 26 is positioned at The opposite side at compression fittings 22 place of plinth 21, is used for caching gas and carrying out gas-liquid separation, outside gas-liquid separation chamber 26 Sealed by an air escape valve seat 23；The second electromagnetic valve 29, the second electromagnetic valve of the second electromagnetic valve 29 it is provided with in air escape valve seat 23 Second passage 45 is connected with gas-liquid separation chamber 26 by the first airflow pipeline 40, the second electromagnetic valve the first passage 44 and air It is connected, realizes the venting blowdown to gas-liquid separation chamber 26 by controlling the unlatching/closedown of the second electromagnetic valve 29；First electromagnetic valve 28 are arranged between compression fittings 22 and gas-liquid separation chamber 26, and compression fittings 22 is by the second airflow pipeline 41 and the first electromagnetic valve Second passage 43 connects with gas-liquid separation chamber 26, gas-liquid separation chamber 26 by the first electromagnetic valve 28 and the 4th airflow pipeline 39 with Pressure reference chamber 27 connects；Arranging an air pressure input interface 34 on the air pressure input joint face of plinth 21, the input of this air pressure connects Mouth is used for connecting air pressure input, and it directly connects with gas-liquid separation chamber 26 can be that gas-liquid separation chamber 26 supplies.

As in figure 2 it is shown, plinth 21 extends two projections in the both sides of compression fittings 22 and pressure reference joint 33, two is convex It is respectively arranged with an installing hole 46 on Qiing, through this installing hole, this utility model module can be integrally fastened to pressure by screw On calibration equipment.The internal port position of compression fittings 22 and pressure reference joint 33 is respectively arranged with filter 32, is used for Filter pollutant or impurity that the used tested manometer of complex environment brings, in protecting joint and pressure checking equipment Pipeline.

The normal pressure module joint face of plinth 21 is installed for connection standard modular pressure 50 and normal pressure module Seat 25, the groove top of the L-shaped stepped hole of normal pressure module mounting seat 25 is provided with second circuit board 24, and communication plug 31 is worn Crossing above-mentioned groove to electrically connect with second circuit board 24, communication plug 31 is electrically connected to a socket 30, as the switching of communication signal Interface；Module pressure interface 35 and a module pressure referenced interface it is provided with on the normal pressure module joint face of plinth 21 36, for plug-in mounting normal pressure module 50；Module pressure referenced interface 36 directly connects with pressure reference chamber 27, and module pressure connects Mouth 35 is connected with gas-liquid separation chamber 26 by the 3rd airflow pipeline 38.

As shown in Figures 6 to 9, for two kinds of common modular pressures (absolute pressure module/gauge pressure module of normal pressure module 50 And differential pressure module) block diagram example.As shown in Figure 6 and Figure 7, absolute pressure module/gauge pressure module include pedestal 01, circuit board 02, Pressure transducer 07, base seat lid 03 and socket communication 08, wherein:

The L-shaped structure of pedestal 01, thicker side offers one for installing the mounting groove of sensor, pressure transducer 07 In being installed on mounting groove from top to down and compress with a pressure ring 12；One first through hole is offered for installing pressure bottom mounting groove Interface 05, the periphery of this pressure interface is provided with a sealing ring 04.

Circuit board 02 is installed on the upside of pedestal 01, and the position of the relatively thin side of L-shaped pedestal 01 offers perforate, socket communication 08 It is installed on circuit board 02 through this perforate；The signal transmssion line of pressure transducer 07 is connected to circuit board 02, and circuit board 02 is right The output signal of pressure transducer 07 is analyzed, debug, amplify after be converted to high-accuracy digital signal, and pass through socket communication 08 is transferred to the display instrument electrically connected with socket communication 08, can directly display pressure on the number signal.

Pressure interface 05 and socket communication 08 are arranged on this miniature high-precision modular pressure in the same direction, and socket communication 08 includes Guide frame (sees Fig. 6), and it is formed with external interface to guide and is connected, and prevents that grafting is improper causes fault.Two do not take off Screw 06 is symmetricly set on the bottom surface of the thicker side of pedestal 01, facilitates this modular pressure entirety to be fastenedly connected in calibration equipment or pressure Power instrument.Sealing ring 04 at the connector of pressure interface 05 makes surface and the pressure interface 05 of connection equipment or manometer The pipeline of position is formed and seals.

Base seat lid 03 is inverted U-shaped, and the shape size of the bottom shape size of its sidewall and pedestal top side wall is mutually Joining, base seat lid 03 compresses sealing gasket 09 and is covered on the sidewall of pedestal 01, and base seat lid 03 is separated by a distance with circuit board 02, Make to be formed between pedestal 01, socket communication 08 and base seat lid 03 to seal structure；Passage 11, base is offered in base seat lid 03 Being positioned at inside flap 03 at passage 11 and arrange a waterproof ventilated membrane 10, this ventilated membrane can be ventilated and water proof and dust proof.Above-mentioned knot Structure reaches IP67 level water proof and dust proof in making the cavity that base seat lid 03 and pedestal 01 are formed and seals, protection pressure transducer 07 and electricity Road plate 02, simultaneously keep ventilation, it is ensured that the reduced pressure of pressure transducer 07 is atmospheric pressure, thus ensure tonometric accurately Property.

As shown in Figure 8 and Figure 9, differential pressure module is essentially identical with the structure of absolute pressure module/gauge pressure module, and difference exists In, the pressure transducer of differential pressure module is installed in the mounting groove of pedestal 01, and upper end is compressed by a screw 13 by base seat lid 03； The bottom of the mounting groove of pedestal 01 offers the first through hole and the second through hole, is respectively mounted pressure interface 05 and pressure reference interface 14, pressure interface 05 and pressure reference interface 14 be arranged around sealing ring 04.

Above-mentioned differential pressure module may be used for measuring the pressure between pressure interface 05 and the external pressure of pressure reference interface 14 Power is poor.

It is assembled into intelligent miniature air pressure interface module of the present utility model, this interface according to above-mentioned annexation with upper-part Can be directly mounted in automatization's pressure checking equipment after module assembling normal pressure module and use, compression fittings 22, Pressure reference joint 33 and normal pressure module mounting seat 25 all expose to outside automatization's pressure checking equipment, it is simple to external to be checked Manometer and be easily installed, keep in repair or standard of replacement modular pressure 50.This interface module is from automatization's pressure checking equipment Internally installed, be fixed on automatization's pressure checking equipment from inside screw through the installing hole 46 of plinth 21 after i.e. loading Housing on, then by normal pressure module 50 from bottom to top from normal pressure module mounting seat 25 plug-in mounting to this interface module On.The type needing the normal pressure module 50 of plug-in mounting determines according to the type of manometer to be checked, such as, to absolute pressure instrument Need when verifying absolute pressure module is installed, need when gauge pressure instrument is verified gauge pressure module is installed, differential pressure meter is entered Need differential pressure module is installed during row verification.

As shown in Figure 4, after this utility model plug-in mounting pressure reduction module, pressure interface 05 plug-in mounting of differential pressure module is to plinth 21 Module pressure interface 35 in, in pressure reference interface 14 plug-in mounting to module pressure referenced interface 36, the sealing ring of differential pressure module The 04 pair of above-mentioned interface connection is formed and seals, and communication plug 31 plug-in mounting on plinth 21 is to the socket communication of differential pressure module simultaneously In 08, the first circuit board 02 of differential pressure module electrically connects with the second circuit board 24 on plinth 21, differential pressure module do not take off spiral shell Differential pressure module 06 is fixed on plinth 21 by nail, it is achieved differential pressure module and interface module gas circuit of the present utility model and circuit Connect.Being connected with pressure reference joint 33 by the pressure reference end of tested differential pressure meter afterwards, pressure end is with compression fittings 22 even Connecing, the air pressure after control accesses at air pressure input interface 34.

After above-mentioned connection completes, then by the first circuit board 02 of normal pressure module 50 (pressure reduction module), plinth 21 The first internal electromagnetic valve 28 and the second circuit board 24 of the second electromagnetic valve 29 are connected to the control circuit of automatization's calibration equipment Plate, and control circuit plate is electrically connected to the display screen of automatization's calibration equipment, it is possible to carry out the verification of differential pressure meter, this reality Work process by novel interface module is as follows:

During differential pressure meter verification, control the second electromagnetic valve 29 and open, the i.e. second electromagnetic valve the first passage 44 and the second electricity Magnet valve the second passage 45 disconnects；Control the first electromagnetic valve 28 to open, the i.e. first electromagnetic valve the first passage 42 and the first electromagnetism Valve the second passage 43 connects, and air pressure input does not carry out pressure input, because reference pressure interface connects with pressure interface, at this moment Differential pressure pressure is 0, finds differential pressure pressure zero；Now the pressure reference end of differential pressure meter is consistent with the pressure of pressure end, can be right Tested manometer carries out zero point correction；Control the first electromagnetic valve 28 and the second electromagnetic valve 29 cuts out, and connect by air pressure input Mouth input gas, for the pressure end supercharging of gas-liquid separation chamber 26 and tested manometer, pressure releasing process final stage has During certain pressure, open the second electromagnetic valve 29, go out outside gas-liquid isolation room with pollutant emissions such as the liquid that tested instrument flows back to, Realize the check and correction to tested manometer force value, and according to the force value of normal pressure module, pressure be adjusted, it is achieved Calibration.

As it is shown in figure 5, this utility model plug-in mounting absolute pressure module (or gauge pressure module, absolute pressure module and gauge pressure module are all only Have a pressure interface 05, be described as a example by absolute pressure module here) after, pressure interface 05 plug-in mounting of absolute pressure module is to joint In the module pressure interface 35 of seat 21, above-mentioned interface connection is formed and seals by the sealing ring 04 of absolute pressure module, plinth simultaneously Communication plug 31 plug-in mounting on 21 in the socket communication 08 of absolute pressure module, first circuit board 02 and the plinth 21 of absolute pressure module On second circuit board 24 electrically connect, absolute pressure module is fixed on plinth 21 by the screw 06 that do not takes off of differential pressure module, it is achieved absolutely Die block and interface module gas circuit of the present utility model and the connection of circuit.Afterwards by pressure end and the pressure of tested absolute pressure instrument Joint 22 connects, and source of the gas accesses at air pressure input interface 34.

After above-mentioned connection completes, then by the first circuit board 02 of normal pressure module 50 (absolute pressure module), plinth 21 The first internal electromagnetic valve 28 and the second circuit board 24 of the second electromagnetic valve 29 are connected to the control circuit of automatization's calibration equipment Plate, and control circuit plate is electrically connected to the display screen of automatization's calibration equipment, it is possible to carry out the verification of absolute pressure instrument, this reality Work process by novel interface module is as follows:

Control the first electromagnetic valve 28 and the second electromagnetic valve 29 all cuts out, the i.e. first electromagnetic valve the first passage 42 and the first electricity Magnet valve the second passage 43 disconnects, and second electromagnetic valve the first passage 44 disconnects with second electromagnetic valve the second passage 45 so that Gas-liquid separation chamber 26 disconnects with pressure reference chamber 27, circulation of qi promoting of going forward side by side pressure input, supplies for gas-liquid separation chamber 26, supercharging, and pressure is released Let slip journey final stage when having certain pressure, open the second electromagnetic valve 29, with pollutant rows such as the liquid that tested instrument flows back to Release outside gas-liquid isolation room, it is achieved the comparison to absolute pressure module Yu absolute pressure instrument, and according to the force value pair of normal pressure module Supply gas pressure is adjusted, it is achieved calibration.

It will be appreciated by those skilled in the art that these embodiments to be merely to illustrate this utility model and be not intended to this practicality newly The scope of type, the various equivalent variations being made this utility model and amendment belong to this utility model disclosure.

Claims (9)

1. an intelligent miniature air pressure interface module, including plinth, plinth is equipped with normal pressure module, and plinth sets Being equipped with compression fittings, pressure reference joint and air pressure input interface, air pressure input interface is by being positioned at the gas flow tube of plinth Road is connected with compression fittings, pressure reference joint and normal pressure module, it is characterised in that described plinth includes in necessarily The first column structure that angle extends to two different directions and the second column structure, have three joint faces, i.e. two cylinders The junction of structure is provided with air pressure input joint face, and air pressure input interface is arranged on described air pressure input joint face；First post The end of body structure is provided with joint joint face, described compression fittings and reference pressure joint and is arranged on described joint joint face； The end of the second column structure is provided with normal pressure module joint face, and described normal pressure module is assemblied in described normal pressure mould On block joint face.

Intelligent miniature air pressure interface module the most according to claim 1, it is characterised in that be additionally provided with inside described plinth Pressure reference chamber, gas-liquid separation chamber and the first electromagnetic valve, the first electromagnetic valve be arranged in described compression fittings and gas-liquid separation chamber it Between, compression fittings is connected with gas-liquid separation chamber by the first airflow pipeline and first electromagnetic valve the second passage, and described gas-liquid is divided Directly connect with air pressure input interface from room；Gas-liquid separation chamber is by the first electromagnetic valve and the 4th airflow pipeline and pressure reference chamber Connection, pressure reference chamber is connected with pressure reference joint.

Intelligent miniature air pressure interface module the most according to claim 2, it is characterised in that the outside of described gas-liquid separation chamber Being sealed by an air escape valve seat, air escape valve seat is internally provided with the second electromagnetic valve, the second electromagnetic valve of the second electromagnetic valve (29) the Two passages (45) are connected with gas-liquid separation chamber (26) by an airflow pipeline (40), the first passage of the second electromagnetic valve (29) (44) it is connected with air.

4. according to the intelligent miniature air pressure interface module described in any one of claims 1 to 3, it is characterised in that described pressure connects The internal port position of head and pressure reference joint is respectively arranged with filter.

Intelligent miniature air pressure interface module the most according to claim 4, it is characterised in that the normal pressure of described plinth Being provided with a module pressure interface and a module pressure referenced interface on module joint face, module pressure referenced interface is joined with pressure Examining chamber directly to connect, module pressure interface is connected with gas-liquid separation chamber by one the 3rd airflow pipeline.

Intelligent miniature air pressure interface module the most according to claim 5, it is characterised in that the normal pressure of described plinth Being also equipped with normal pressure module mounting seat on module joint face, described normal pressure module mounting seat is to have the cylinder of through hole Structure, described through hole is L-shaped stepped hole, and the deeper side of L-shaped stepped hole is connected with the normal pressure module mounting seat of plinth Face connects, and the side step that L-shaped stepped hole is shallower is provided with a groove, and described groove top is provided with second circuit board, logical News plug electrically connects through described groove with second circuit board, and a socket is electrically connected to described communication plug.

Intelligent miniature air pressure interface module the most according to claim 6, it is characterised in that described normal pressure module is for poor Die block, plug-in mounting is on plinth from described normal pressure module mounting seat for differential pressure module, and the pressure interface of differential pressure module is inserted It is filled in the module pressure interface of plinth, in pressure reference interface plug-in mounting to module pressure referenced interface, differential pressure module close Above-mentioned each interface connection is formed and seals by seal, in the communication plug plug-in mounting on plinth to the socket communication of differential pressure module, The first circuit board of differential pressure module electrically connects with the second circuit board on plinth, differential pressure module do not take off screw by differential pressure module It is fixed on plinth.

Intelligent miniature air pressure interface module the most according to claim 6, it is characterised in that described normal pressure module is exhausted Die block, in the module pressure interface of the pressure interface plug-in mounting of absolute pressure module to plinth, the sealing ring of absolute pressure module is to above-mentioned Interface connection is formed and seals, in the socket communication of the communication plug plug-in mounting on plinth to absolute pressure module, and the of absolute pressure module One circuit board electrically connects with the second circuit board on plinth, and absolute pressure module is fixed on plinth by the screw that do not takes off of modular pressure On.

Intelligent miniature air pressure interface module the most according to claim 6, it is characterised in that described normal pressure module is table Die block, in the module pressure interface of the pressure interface plug-in mounting of gauge pressure module to plinth, the sealing ring of gauge pressure module is to above-mentioned Interface connection is formed and seals, in the socket communication of the communication plug plug-in mounting on plinth to gauge pressure module, and the of gauge pressure module One circuit board electrically connects with the second circuit board on plinth, and gauge pressure module is fixed on plinth by the screw that do not takes off of modular pressure On.