CN113294561B - Power-off reset type bidirectional switching electromagnetic valve - Google Patents
Power-off reset type bidirectional switching electromagnetic valve Download PDFInfo
- Publication number
- CN113294561B CN113294561B CN202110465839.2A CN202110465839A CN113294561B CN 113294561 B CN113294561 B CN 113294561B CN 202110465839 A CN202110465839 A CN 202110465839A CN 113294561 B CN113294561 B CN 113294561B
- Authority
- CN
- China
- Prior art keywords
- valve
- normally
- normally closed
- cavity
- normally open
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/10—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit
- F16K11/20—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with two or more closure members not moving as a unit operated by separate actuating members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/0263—Construction of housing; Use of materials therefor of lift valves multiple way valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/02—Construction of housing; Use of materials therefor of lift valves
- F16K27/029—Electromagnetically actuated valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0603—Multiple-way valves
- F16K31/0624—Lift valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/0675—Electromagnet aspects, e.g. electric supply therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
Abstract
The invention discloses a power-off reset type two-way switching electromagnetic valve which comprises a valve body, wherein a normally open valve, a normally closed valve and a pilot valve are arranged on the valve body, and an air inlet, a normally open side air supply opening and a normally closed side air supply opening are formed in the valve body. The power-off reset type bidirectional switching electromagnetic valve has the advantages that the stability of bidirectional gas circuit switching is improved, the phenomenon of gas leakage of a normally closed side generated when gas is supplied from a normally open side again under the condition of first gas releasing and then power off is avoided, and therefore the reliability of a low-temperature liquid rocket ground gas supply system in use under different conditions is improved.
Description
Technical Field
The invention relates to an electromagnetic valve, in particular to an electromagnetic valve applied to the field of gas conveying and control.
Background
Through investigation on similar valves at home and abroad, the bidirectional switching electromagnetic valve is widely applied to switching working conditions, switching work under different conditions needs to be completed under complex conditions, various requirements on functions of the valves are provided, and the bidirectional switching electromagnetic valve with high reliability is needed. Different preconditions exist before the bidirectional switching electromagnetic valve is used in each stage of the low-temperature liquid rocket ground gas supply system, when the low-temperature liquid rocket ground gas supply system is used for supplying gas again, the original technical state of the valve needs to be kept, and the resetting condition of the valve of the bidirectional switching electromagnetic valve needs to be considered. For the two-way switching electromagnetic valve, under the condition of first air release and then power failure, the normally closed side main valve cannot be pushed to the air inlet sealing position, so that when the normally open side supplies air next time, part of air is discharged from the normally closed side air supply port, and the air leakage phenomenon is generated.
Disclosure of Invention
The invention aims to solve the technical problem of providing a power-off reset type bidirectional switching electromagnetic valve, which improves the stability of bidirectional gas circuit switching, avoids the gas leakage phenomenon of a normally closed side generated when gas is supplied at a normally open side again under the condition of first gas release and then power off, and further improves the reliability of a low-temperature liquid rocket ground gas supply system in use under different conditions.
The invention relates to a power-off reset type two-way switching electromagnetic valve which comprises a valve body, wherein a normally open valve, a normally closed valve and a pilot valve are arranged on the valve body, an air inlet, a normally open side air supply port and a normally closed side air supply port are arranged on the valve body,
the normally open valve comprises a normally open valve, a normally open valve cavity, a normally open piston and a normally open piston cavity, wherein the normally open valve cavity and the normally open piston cavity are arranged in the valve body, the normally open valve and the normally open piston are respectively arranged in the normally open valve cavity and the normally open piston cavity, a normally open valve seat is arranged between the normally open valve cavity and the normally open piston cavity, a normally open valve rod through hole for communicating the normally open valve cavity and the normally open piston cavity is arranged on the normally open valve seat, a normally open valve rod is arranged between the normally open valve and the normally open piston and penetrates through the normally open valve rod through hole, the normally open piston divides the normally open piston cavity into a normally open pressure release cavity and a normally open back pressure cavity, the normally open pressure release cavity is positioned between the normally open piston and the normally open valve seat, a normally open pressure release hole communicated with the outside of the valve body is arranged on the normally open pressure release cavity, and a normally open air inlet channel communicated with an air inlet is arranged at one end of the normally open valve seat of the normally open valve cavity, the normally open valve cavity is provided with the normally open side air supply port communicated with the outside of the valve body,
the normally closed valve comprises a normally closed valve, a normally closed valve cavity, a normally closed piston and a normally closed piston cavity, wherein the normally closed valve cavity and the normally closed piston cavity are arranged in the valve body, the normally closed valve and the normally closed piston are respectively arranged in the normally closed valve cavity and the normally closed piston cavity, a normally closed valve seat is arranged between the normally closed valve cavity and the normally closed piston cavity, a normally closed valve rod through hole for communicating the normally closed valve cavity with the normally closed piston cavity is formed in the normally closed valve seat, a normally closed valve rod is arranged between the normally closed valve and the normally closed piston and penetrates through the normally closed valve rod through hole, the normally closed piston separates the normally closed piston cavity into a normally closed pressure release cavity and a normally closed backpressure cavity, the normally closed pressure release cavity is located between the normally closed piston and the normally closed valve seat, a normally closed pressure release hole communicated with the outside of the valve body is formed in the normally closed pressure release cavity, and a normally closed air inlet channel communicated with an air inlet is formed in one end of the normally closed valve seat of the normally closed valve cavity, the normally closed valve cavity is provided with the normally closed side air supply port communicated with the outside of the valve body,
the pilot valve comprises a pilot valve, a pilot valve cavity and an electromagnetic control device, the pilot valve cavity is arranged on the valve body, the pilot valve is arranged in the pilot valve cavity, the electromagnetic control device is arranged outside the valve body, a mandril channel communicated with the outside of the valve body is arranged on the pilot valve cavity, a mandril is arranged between the electromagnetic control device and the pilot valve, the mandril is positioned in the mandril channel, a pilot air inlet channel communicated with an air inlet is arranged at one end of the pilot valve cavity opposite to the mandril channel, the electromagnetic control device drives the pilot valve to move in the pilot valve cavity through the mandril to alternatively open or close the mandril channel and the pilot air inlet channel,
be equipped with first gas passage between the normally open backpressure chamber in normally open piston chamber and the normally closed valve chamber, be equipped with second gas passage between the normally closed backpressure chamber in normally closed piston chamber and the guide valve chamber, be equipped with on the ejector pin passageway with the outer communicating guide pressure release hole of valve body, normally closed backpressure intracavity is equipped with first spring, first spring is located between the relative normally closed valve seat one end in normally closed piston and normally closed piston chamber.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein a normally-open installation cavity for installing a normally-open valve is arranged on a valve body, a normally-open valve seat, a normally-open piston and a normally-open plug cover are sequentially installed in the normally-open installation cavity from inside to outside, the normally-open valve seat is cylindrical, the normally-open piston is arranged in a cylinder cavity of the normally-open valve seat, the cylinder cavity of the normally-open valve seat forms a normally-open piston cavity, the normally-open plug cover is fixedly arranged in the normally-open installation cavity, one end of the normally-open valve seat abuts against the normally-open plug cover, the other end of the normally-open valve seat abuts against a first annular boss on the inner wall of the normally-open installation cavity, and O-shaped sealing rings are respectively arranged between the normally-open valve seat and the normally-open installation cavity and between the normally-open plug cover and the normally-open installation cavity.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein a normally open valve rod is arranged between a normally open valve and a normally open piston in the specific mode that: normally open the valve rod and include first valve rod and the second valve rod of mutual disposition, first valve rod is fixed locate on the normally open valve and with normally open valve integrated into one piece, the second valve rod is fixed locate on the normally open piston and with normally open piston integrated into one piece, the normally open piston set up second valve rod one end and be conical, the section of thick bamboo chamber that is close to normally open valve one end of normally open the valve seat also is conical, the conical end of normally open piston and the conical section of thick bamboo chamber phase-match of normally open the valve seat.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein a valve body is provided with a normally closed installation cavity for installing a normally closed valve, a normally closed valve seat, a normally closed piston and a normally closed plug cover are sequentially installed in the normally closed installation cavity from inside to outside, the normally closed valve seat is cylindrical, the normally closed piston is arranged in a cylinder cavity of the normally closed valve seat, the cylinder cavity of the normally closed valve seat forms a normally closed piston cavity, the normally closed plug cover is fixedly arranged in the normally closed installation cavity, one end of the normally closed valve seat abuts against the normally closed plug cover, the other end of the normally closed valve seat abuts against a second annular boss on the inner wall of the normally closed installation cavity, and O-shaped sealing rings are respectively arranged between the normally closed valve seat and the normally closed installation cavity and between the normally closed plug cover and the normally closed installation cavity.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein a normal close valve rod is arranged between a normal close valve and a normal close piston in a specific mode that: the normally closed valve rod includes mutual disposition's third valve rod and fourth valve rod, the third valve rod is fixed locate on the normally closed valve and with normally closed valve integrated into one piece, the fourth valve rod is fixed locate on the normally closed piston and with normally closed piston integrated into one piece, the normally closed piston set up fourth valve rod one end and be conical, the section of thick bamboo chamber that is close to normally closed valve one end of normally closed valve seat also is conical, the conical end of normally closed piston and the conical section of thick bamboo chamber phase-match of normally closed valve seat.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein a normally open pressure relief hole and a normally closed pressure relief hole are respectively provided with an air relief nozzle, the air relief nozzles are barrel-shaped, a barrel opening of each air relief nozzle is connected to the normally open pressure relief hole/the normally closed pressure relief hole in a threaded manner, an air relief through hole is formed in the barrel wall of each air relief nozzle, and a leakage detection through hole is formed in the barrel bottom of each air relief nozzle.
The power-off reset type bidirectional switching electromagnetic valve is characterized in that a connecting cylinder is fixedly arranged on a valve body, a valve seat is hermetically sleeved in the connecting cylinder, a pilot valve cavity is arranged at one end, close to the valve body, of the valve seat, a push rod channel is arranged at one end, far away from the valve body, of the valve seat, a second spring is arranged between one end, close to a pilot air inlet channel, of the pilot valve and the valve body, a third annular boss is arranged between the push rod channel and the pilot valve cavity, a columnar push head is arranged at one end, close to the third annular boss, of the push rod, one end, close to the third annular boss, of the pilot valve is conical, and the columnar push head penetrates through the third annular boss and abuts against the conical end of the pilot valve.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein an electromagnetic control device comprises a wire disc-shaped shielding sleeve, a coil is wound on the periphery of the wire disc-shaped shielding sleeve, a static iron core is fixedly arranged at the lower end of an inner cavity of the wire disc-shaped shielding sleeve, a movable iron core is sleeved at the upper end of the inner cavity of the wire disc-shaped shielding sleeve, a connecting sleeve is clamped at the lower end of the static iron core and is in threaded connection with a connecting cylinder, the lower end of the static iron core abuts against a valve seat, an O-shaped sealing ring is arranged between the valve seat and the connecting cylinder, one end, far away from a third annular boss, of an ejector rod penetrates through the static iron core and is fixedly connected onto the movable iron core, a shell is arranged on the outer side of the wire disc-shaped shielding sleeve, and a cable joint is arranged on the shell and is electrically connected with the coil.
The power-off reset type bidirectional switching electromagnetic valve is characterized in that an air inlet nozzle is arranged on the air inlet, the air inlet nozzle is cylindrical, one end of the air inlet nozzle is connected to the air inlet in a threaded sealing mode, and the other end of the air inlet nozzle is connected with an air inlet cap in a threaded connection mode.
The power-off reset type bidirectional switching electromagnetic valve is characterized in that air supply nozzles are arranged on the normally open side air supply port and the normally closed side air supply port respectively, the air supply nozzles are cylindrical, one end of each air supply nozzle is connected to the normally open side air supply port/the normally closed side air supply port in a threaded sealing mode, the other end of each air supply nozzle is connected with an air supply cap in a threaded mode, and the valve body is a regular polygon body.
The power-off reset type bidirectional switching electromagnetic valve is different from the prior art in that the power-off reset type bidirectional switching electromagnetic valve is a combined form of a main valve and a pilot valve, a single-point control pilot type control structure is adopted, a normally closed side piston (namely the normally closed piston) of the main valve is controlled through the action of the pilot valve, and the normally closed piston pushes the normally closed valve to control the opening and closing of a normally closed side air passage; along with the start and stop of pilot valve, gaseous also makes the reciprocating motion of normally opening the side piston (foretell normally opening the piston) simultaneously, and normally opening the piston and promote normally opening the valve and controlling normally opening the side gas circuit and open and close, finally realizes the two-way fast and stable's of this valve switching. The power-off reset type bidirectional switching electromagnetic valve comprehensively considers the reliability and manufacturability of products and parts, so that the power-off reset type bidirectional switching electromagnetic valve has extremely high flexibility and reliability. Meanwhile, a first spring is additionally arranged in the normally closed back pressure cavity, under the condition that the power-off reset type bidirectional switching electromagnetic valve is subjected to power-off after air bleeding, the first spring can push the normally closed side main valve to the air inlet sealing position, namely the first spring pushes the normally closed piston which pushes the normally closed valve until the normally closed valve closes the normally closed air inlet channel, so that when the normally open side of the electromagnetic valve is used again for air supply, the air leakage amount of the normally closed side can be reduced, and the reliability of a low-temperature liquid rocket ground air supply system in use under different conditions is improved.
The normally-open valve rod between the normally-open valve and the normally-open piston is not an integral structure, but is designed into the first valve rod integrally formed with the normally-open valve and the second valve rod integrally formed with the normally-open piston, namely, the normally-open valve and the normally-open piston are designed into a split structure, the length of the normally-open valve rod is respectively processed on the normally-open valve and the normally-open piston, so that the strength of the normally-open valve and the normally-open piston is enhanced by the split structure, the processing period is obviously shortened, the structural stability of the normally-open valve and the normally-open piston can be improved, and the stability of mutual action between the normally-open valve and the normally-open piston can be improved. Similarly, the normally closed valve rod between the normally closed valve and the normally closed piston in the invention also adopts the same structure as the normally open valve rod, and the structural stability of the normally closed valve and the normally closed piston and the stability of mutual action between the normally closed valve and the normally closed piston can be improved.
In the invention, the normally open pressure relief hole and the normally closed pressure relief hole are respectively provided with the air relief nozzle, and the barrel bottom of the air relief nozzle is provided with the leakage detection through hole, so that one end of the rubber tube can be connected with the outer barrel wall of the air relief nozzle when the air relief nozzle performs leakage detection (at the moment, the air relief through hole on the barrel wall is blocked by the rubber tube, gas in the valve body can enter the rubber tube through the leakage detection through hole), the other end of the rubber tube is immersed in leakage detection liquid, and the power-off reset type bidirectional switching electromagnetic valve is subjected to leakage detection by a bubble method, so that the air tightness detection efficiency of the electromagnetic valve is improved.
The valve body is a regular polygon, so that the appearance of the valve body and internal components of the valve body are convenient to process, and the pneumatic characteristic of the valve body can be improved.
The invention will be further explained with reference to the drawings.
Drawings
FIG. 1 is a working schematic diagram of a power-off reset type two-way switching solenoid valve (an electromagnetic control device is in a power-off state) according to the present invention;
FIG. 2 is a working schematic diagram of the power-off reset type two-way switching solenoid valve (the electromagnetic control device is in a power-on state);
FIG. 3 is a schematic structural diagram of a power-off reset type bidirectional switching solenoid valve according to the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 3 at B;
FIG. 5 is a cross-sectional view taken along line A-A of FIG. 3;
fig. 6 is a graph illustrating a voltage build-up process of the normally open side and the normally closed side of the power-off reset type bidirectional switching solenoid valve according to the present invention.
Detailed Description
As shown in fig. 1 and fig. 2-6, the power-off reset type bidirectional switching electromagnetic valve of the present invention includes a valve body 45, wherein a normally open valve, a normally closed valve and a pilot valve are disposed on the valve body 45, and an air inlet 18, a normally open side air supply port 23 and a normally closed side air supply port 13 are disposed on the valve body 45. The normally open valve is provided on the normally open side of the valve body 45, and the normally closed valve is provided on the normally closed side of the valve body 45. Gas enters the valve body 45 through the gas inlet 18, and then exits the valve body 45 through the normally open side gas supply port 23/the normally closed side gas supply port 13 to be supplied. The bidirectional switching means switching the supply air between the normally open side air supply port 23 and the normally closed side air supply port 13.
The normally open valve comprises a normally open valve 22, a normally open valve cavity 21, a normally open piston 29 and a normally open piston cavity 30, wherein the normally open valve cavity 21 and the normally open piston cavity 30 are arranged in a valve body 45, the normally open valve 22 and the normally open piston 29 are respectively arranged in the normally open valve cavity 21 and the normally open piston cavity 30, a normally open valve seat 25 is arranged between the normally open valve cavity 21 and the normally open piston cavity 30, a normally open valve rod through hole 24 for communicating the normally open valve cavity 21 and the normally open piston cavity 30 is arranged on the normally open valve seat 25, a normally open valve rod 26 is arranged between the normally open valve 22 and the normally open piston 29, the normally open valve rod 26 penetrates through the normally open valve rod through hole 24, the normally open piston 29 divides the normally open piston cavity 30 into a normally open pressure relief cavity 28 and a normally open back pressure cavity 31, the normally open pressure relief cavity 28 is positioned between the normally open piston 29 and the normally open valve seat 25, and a normally open pressure relief hole 27 communicated with the outside the valve body 45 is arranged on the normally open pressure relief cavity 28, and a normally open air inlet channel 20 communicated with the air inlet 18 is arranged at one end of the normally open valve cavity 21, which is opposite to the normally open valve seat 25, and the normally open side air supply port 23 communicated with the outside of the valve body 45 is arranged on the normally open valve cavity 21.
The normally closed valve comprises a normally closed valve 14, a normally closed valve cavity 15, a normally closed piston 8 and a normally closed piston cavity 7, wherein the normally closed valve cavity 15 and the normally closed piston cavity 7 are arranged in a valve body 45, the normally closed valve 14 and the normally closed piston 8 are respectively arranged in the normally closed valve cavity 15 and the normally closed piston cavity 7, a normally closed valve seat 17 is arranged between the normally closed valve cavity 15 and the normally closed piston cavity 7, a normally closed valve rod through hole 12 for communicating the normally closed valve cavity 15 with the normally closed piston cavity 7 is arranged on the normally closed valve seat 17, a normally closed valve rod 11 is arranged between the normally closed valve 14 and the normally closed piston 8, the normally closed valve rod 11 penetrates through the normally closed valve rod through hole 12, the normally closed piston 8 separates the normally closed piston cavity 7 into a normally closed pressure relief cavity 10 and a normally closed back pressure cavity 6, the normally closed pressure relief cavity 10 is positioned between the normally closed piston 8 and the normally closed piston seat 17, and a normally closed pressure relief hole 9 communicated with the outside the valve body 45 is arranged on the pressure relief cavity 10, one end of the normally closed valve cavity 15, which is opposite to the normally closed valve seat 17, is provided with a normally closed air inlet channel 16 communicated with an air inlet 18, and the normally closed valve cavity 15 is provided with a normally closed side air supply port 13 communicated with the outside of the valve body 45.
The pilot valve comprises a pilot valve 4, a pilot valve cavity 33 and an electromagnetic control device 1, the pilot valve cavity 33 is arranged on a valve body 45, the pilot valve 4 is arranged in the pilot valve cavity 33, the electromagnetic control device 1 is arranged outside the valve body 45, a mandril channel 2 communicated with the outside of the valve body 45 is arranged on the pilot valve cavity 33, a mandril 34 is arranged between the electromagnetic control device 1 and the pilot valve 4, the mandril 34 is positioned in the mandril channel 2, one end, opposite to the mandril channel 2, of the pilot valve cavity 33 is provided with a pilot air inlet channel 19 communicated with an air inlet 18, and the electromagnetic control device 1 drives the pilot valve 4 to move in the pilot valve cavity 33 through the mandril 34 so as to alternately open or close the mandril channel 2 and the pilot air inlet channel 19.
A first gas channel 32 is arranged between a normally open back pressure cavity 31 of the normally open piston cavity 30 and the normally closed valve cavity 15, a second gas channel 5 is arranged between a normally closed back pressure cavity 6 of the normally closed piston cavity 7 and a pilot valve cavity 33, and a pilot pressure relief hole 3 communicated with the valve body 45 is arranged on the ejector rod channel 2. The normally closed back pressure cavity 6 is internally provided with a first spring 63, and the first spring 63 is arranged between the normally closed piston 8 and one end of the normally closed valve seat 17 opposite to the normally closed piston cavity 7.
As shown in fig. 5, in the power-off reset type bidirectional switching electromagnetic valve, a normally-open installation cavity for installing a normally-open valve is arranged on the valve body 45, a normally-open valve 22, a normally-open valve seat 25, a normally-open piston 29 and a normally-open plug cover 57 are sequentially installed in the normally-open installation cavity from inside to outside, the normally-open valve seat 25 is cylindrical, the normally-open piston 29 is arranged in a cylinder cavity of the normally-open valve seat 25, the cylinder cavity of the normally-open valve seat 25 forms the normally-open piston cavity 30, the normally-open plug cover 57 is fixedly arranged in the normally-open installation cavity in a threaded connection mode, one end of the normally-open valve seat 25 abuts against the normally-open plug cover 57, and the other end of the normally-open valve seat 25 abuts against a first annular boss 58 on the inner wall of the normally-open installation cavity. Normally open valve seat 25 and normally open between the installation cavity and normally open blanking cover 57 and normally open between the installation cavity all be equipped with O type sealing washer to reach normally open valve seat 25 and normally open between the installation cavity and normally open blanking cover 57 and normally open between the installation cavity sealed effect.
Normally open blanking cover 57 will normally open the valve seat 25 and compress tightly to fix in normally opening the installation cavity, normally open blanking cover 57 is compressing tightly normally open valve seat 25 the time, normally open blanking cover 57 supports in the nozzle edge of normally opening valve seat 25.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein a normally open valve rod 26 is arranged between a normally open valve 22 and a normally open piston 29 in the following specific mode: normally open valve stem 26 includes first valve stem 52 and the second valve stem 53 of mutual disposition, first valve stem 52 is fixed locate on normally opening valve 22 and with normally open valve 22 integrated into one piece, second valve stem 53 is fixed locate on normally opening piston 29 and with normally open piston 29 integrated into one piece, normally open piston 29 set up second valve stem 53 one end and be conical, the section of thick bamboo chamber that is close to normally open valve 22 one end of normally opening valve seat 25 also is conical, the conical end of normally opening piston 29 matches with the conical section of thick bamboo chamber of normally opening valve seat 25.
As shown in fig. 5, in the power-off reset type bidirectional switching electromagnetic valve, a normally closed installation cavity for installing a normally closed valve is arranged on the valve body 45, a normally closed valve 14, a normally closed valve seat 17, a normally closed piston 8 and a normally closed plug cover 60 are sequentially installed in the normally closed installation cavity from inside to outside, the normally closed valve seat 17 is cylindrical, the normally closed piston 8 is arranged in a cylinder cavity of the normally closed valve seat 17, the cylinder cavity of the normally closed valve seat 17 forms the normally closed piston cavity 7, the normally closed plug cover 60 is fixedly arranged in the normally closed installation cavity in a threaded connection manner, one end of the normally closed valve seat 17 abuts against the normally closed plug cover 60, and the other end of the normally closed valve seat 17 abuts against a second annular boss 59 on the inner wall of the normally closed installation cavity. O-shaped sealing rings are arranged between the normally closed valve seat 17 and the normally closed mounting cavity and between the normally closed blocking cover 60 and the normally closed mounting cavity, so that the effects of sealing between the normally closed valve seat 17 and the normally closed mounting cavity and sealing between the normally closed blocking cover 60 and the normally closed mounting cavity are achieved.
The normally closed plug cover 60 compresses and fixes the normally closed valve seat 17 in the normally closed installation cavity, and when the normally closed plug cover 60 compresses the normally closed valve seat 17, the normally closed plug cover 60 is abutted against the edge of the cylinder opening of the normally closed valve seat 17.
When the first spring 63 is installed, the first spring 63 is installed between the normally closed piston 8 and the normally closed cap 60, where the normally closed cap 60 is the end of the normally closed piston chamber 7 opposite to the normally closed valve seat 17.
The invention relates to a power-off reset type bidirectional switching electromagnetic valve, wherein a normally closed valve rod 11 is arranged between a normally closed valve 14 and a normally closed piston 8 in the following specific mode: normally closed valve rod 11 includes third valve rod 62 and fourth valve rod 61 of mutual disposition, third valve rod 62 is fixed locate on normally closed valve 14 and with normally closed valve 14 integrated into one piece, fourth valve rod 61 is fixed locate on normally closed piston 8 and with normally closed piston 8 integrated into one piece, normally closed piston 8 set up fourth valve rod 61 one end and be conical, the section of thick bamboo chamber that is close to normally closed valve 14 one end of normally closed valve seat 17 also is conical, the conical end of normally closed piston 8 and the conical section of thick bamboo chamber phase-match of normally closed valve seat 17.
As shown in fig. 5, in the power-off reset type bidirectional switching electromagnetic valve of the present invention, both the normally open pressure-releasing hole 27 and the normally closed pressure-releasing hole 9 are provided with a gas-releasing nozzle 54, the gas-releasing nozzle 54 is barrel-shaped, a barrel opening of the gas-releasing nozzle 54 is screwed to the normally open pressure-releasing hole 27/the normally closed pressure-releasing hole 9, a gas-releasing through hole 56 is provided on a barrel wall of the gas-releasing nozzle 54, and a leak-detecting through hole 55 is provided on a barrel bottom of the gas-releasing nozzle 54.
As shown in fig. 3 and fig. 4, in the power-off reset type bidirectional switching electromagnetic valve, a connecting cylinder 50 is fixedly arranged on the valve body 45, a valve seat 48 is hermetically sleeved in the connecting cylinder 50, the end of the valve seat 48 close to the valve body 45 is provided with the pilot valve cavity 33, the end of the valve seat 48 far away from the valve body 45 is provided with the ejector rod channel 2, a second spring 49 is arranged between the end of the pilot valve 4 close to the pilot air inlet channel 19 and the valve body 45, a third annular boss 47 is arranged between the ejector rod channel 2 and the pilot valve cavity 33, one end of the ejector rod 34 close to the third annular boss 47 is provided with a columnar ejector head 46, one end of the pilot valve 4 close to the third annular boss 47 is conical, and the columnar ejector head 46 abuts against the conical end of the pilot valve 4 after penetrating through the third annular boss 47.
As shown in fig. 3, in conjunction with fig. 4, the power-off reset type bidirectional switching solenoid valve of the present invention, wherein the solenoid control device 1 includes a wire coil shaped shield 43, the coil 39 is wound on the periphery of the wire disk-shaped shielding sleeve 43, the static iron core 44 is fixedly arranged at the lower end of the inner cavity of the wire disk-shaped shielding sleeve 43, the movable iron core 41 is sleeved on the upper end of the inner cavity of the wire disc-shaped shielding sleeve 43, the connecting sleeve 51 is clamped at the lower end of the static iron core 44, the connecting sleeve 51 is connected to the connecting cylinder 50 in a threaded manner, the lower end of the static iron core 44 is abutted against the valve seat 48, an O-shaped sealing ring is arranged between the valve seat 48 and the connecting cylinder 50, one end of the ejector rod 34 far away from the third annular boss 47 penetrates through the static iron core 44 and then is fixedly connected to the movable iron core 41, a shell 40 is arranged on the outer side of the wire disc-shaped shielding sleeve 43, a cable connector 42 is arranged on the shell 40, and the cable connector 42 is electrically connected with the coil 39. The cable connector 42 is used for connecting a power supply. The operating voltage of the electromagnetic control device 1 is direct current 27 ± 3V.
The lower end of the stationary core 44 is screwed to the connecting cylinder 50 through a connecting sleeve 51, and the stationary core 44 and the valve seat 48 are in a compressed and fixed state at this time.
As shown in fig. 3 in combination with fig. 4, when the coil 39 is energized, the plunger 41 drives the plunger 34 to move toward the stationary core 44, so that the columnar plunger 46 pushes the pilot valve 4 to move toward the pilot inlet channel 19 until the pilot inlet channel 19 is closed (and the plunger channel 2 is opened), and in the process, the pilot valve 4 compresses the second spring 49. When the coil 39 is de-energized, the compressed second spring 49 is expanded, and the pilot shutter 4 moves toward the ram channel 2 until it is stopped at the third annular boss 47 under the elastic force of the second spring 49, thereby closing the ram channel 2 (while opening the pilot intake channel 19).
Both ends of the pilot valve 4 are provided with an elastic sealing material (e.g., rubber) to enhance the sealing effect. When the pilot valve 4 closes the mandril channel 2, namely the conical end of the pilot valve 4 is propped against the third annular boss 47, the conical sealing is adopted at the position, so that the sealing effect is better. When the pilot valve 4 closes the pilot intake passage 19, a knife edge is provided on the valve body 45 on the periphery of the pilot intake passage 19 of the pilot valve chamber 33 to enhance the sealing effect with the pilot valve 4.
As shown in fig. 3 and 5, in the power-off reset type bidirectional switching electromagnetic valve of the present invention, an air inlet nozzle 36 is disposed on the air inlet 18, the air inlet nozzle 36 is cylindrical, one end of the air inlet nozzle 36 is connected to the air inlet 18 in a sealing manner, and the other end of the air inlet nozzle 36 is connected to an air inlet cap 35 in a threaded manner. An O-ring seal is provided between the nozzle 36 and the valve body 45 at the inlet 18 to seal the nozzle 36 to the inlet 18. When the present invention is not in use, the air intake cap 35 is screwed on the air intake nozzle 36 to prevent foreign materials such as dust from entering the air intake nozzle 36.
As shown in fig. 3, in the power-off reset type two-way switching electromagnetic valve of the present invention, the normally open side air supply port 23 and the normally closed side air supply port 13 are both provided with air supply nozzles 37, the air supply nozzles 37 are cylindrical, one end of each air supply nozzle 37 is connected to the normally open side air supply port 23/the normally closed side air supply port 13 in a screw sealing manner, the other end of each air supply nozzle 37 is connected to an air supply cap 38 in a screw sealing manner, and the valve body 45 is a regular polygon body. An O-ring seal is provided between the air supply nozzle 37 and the valve body 45 at the normally open side air supply port 23/the normally closed side air supply port 13 to hermetically connect the air supply nozzle 37 to the air supply port. When the present invention is not in use, the air supply cap 38 is screwed on the air supply nozzle 37 to prevent dust and other foreign materials from entering the air supply nozzle 37.
The power-off reset type bidirectional switching electromagnetic valve is different from the prior art in that the power-off reset type bidirectional switching electromagnetic valve is a combined form of a main valve and a pilot valve, a single-point control pilot type control structure is adopted, a normally closed side piston (namely the normally closed piston 8) of the main valve is controlled through the action of the pilot valve, and the normally closed piston 8 pushes a normally closed valve 14 to control the opening and closing of a normally closed side air passage; with the opening and closing of the pilot valve, the gas also makes the normally open side piston (namely the normally open piston 29) reciprocate at the same time, the normally open piston 29 pushes the normally open valve 22 to control the opening and closing of the normally open side gas path, and finally the bidirectional rapid and stable switching of the valve is realized. The power-off reset type bidirectional switching electromagnetic valve comprehensively considers the reliability and manufacturability of products and parts, so that the power-off reset type bidirectional switching electromagnetic valve has extremely high flexibility and reliability. Meanwhile, the first spring 63 is additionally arranged in the normally closed back pressure cavity 6, under the condition that the power-off reset type bidirectional switching electromagnetic valve is powered off after air is deflated, the first spring 63 can push the normally closed side main valve to the air inlet sealing position, namely the first spring 63 pushes the normally closed piston 8, the normally closed piston 8 pushes the normally closed valve 14 until the normally closed valve 14 closes the normally closed air inlet channel 16, so that when the normally open side of the electromagnetic valve is used again for air supply, the air leakage amount of the normally closed side can be reduced, and the reliability of the low-temperature liquid rocket ground air supply system in use under different conditions is improved.
After the power-off reset type bidirectional switching electromagnetic valve is deflated firstly and then is powered off, the normally closed air inlet channel 16 is not closed by the normally closed valve 14, and in order to avoid the phenomenon of air leakage at the normally closed side generated when air is supplied through the normally open side air supply port next time, the first spring 63 is arranged behind the normally closed piston 8, so that the phenomenon of air leakage cannot occur when the power is off after the air is deflated firstly and then is supplied, because after the power is off after the air is deflated firstly, the normally closed piston 8 moves towards the normally closed valve seat 17 under the elastic force action of the first spring 63, and meanwhile, the normally closed piston 8 pushes the normally closed valve 14 to move towards the normally closed air inlet channel 16 until the normally closed air inlet channel 16 is closed, so that the phenomenon of air leakage is avoided.
The normally open valve rod 26 between the normally open valve 22 and the normally open piston 29 in the invention is not an integral structure, but is designed into the first valve rod 52 integrally formed with the normally open valve 22 and the second valve rod 53 integrally formed with the normally open piston 29, that is, the normally open valve 22 and the normally open piston 29 are designed into a split structure, and the length of the normally open valve rod 26 is respectively processed on the normally open valve 22 and the normally open piston 29, so that the split structure enhances the strength of the normally open valve 22 and the normally open piston 29, the processing period is obviously shortened, the structural stability of the normally open valve 22 and the normally open piston 29 can be improved, and the stability of mutual action between the normally open valve 22 and the normally open piston 29 can also be improved. Similarly, the normally closed valve rod 11 between the normally closed valve 14 and the normally closed piston 8 in the invention also adopts the same structure as the normally open valve rod 26, and the structural stability of the normally closed valve 14 and the normally closed piston 8 and the stability of mutual action between the normally closed valve 14 and the normally closed piston can be improved.
In the invention, the normally open pressure relief hole 27 and the normally closed pressure relief hole 9 are both provided with the air relief nozzle 54, and the barrel bottom of the air relief nozzle 54 is provided with the leakage detection through hole 55, so that when the leakage detection of the air relief nozzle 54 is carried out, one end of the rubber tube can be connected with the outer barrel wall of the air relief nozzle 54 (at the moment, the air relief through hole 56 on the barrel wall is blocked by the rubber tube, the gas in the valve body 45 can enter the rubber tube through the leakage detection through hole 55), then the other end of the rubber tube is immersed in the leakage detection liquid, the power-off reset type bidirectional switching electromagnetic valve is subjected to leakage detection by a bubble method, and the air tightness detection efficiency of the electromagnetic valve is improved.
The valve body 45 of the present invention is a regular polygon, so that the shape of the valve body 45 and the internal components of the valve body 45 can be easily processed, and the aerodynamic characteristics of the valve body 45 can be improved. The structural design strength of the power-off reset type bidirectional switching electromagnetic valve meets the requirement of 10MPa working pressure.
The normally closed valve 8 of the normally closed valve is controlled through the action of the pilot valve, and the normally closed valve 14 is pushed by the normally closed piston 8 to control the opening and closing of the air passage on the normally closed side; with the opening and closing of the pilot valve, the gas also makes the normally open piston 29 of the normally open valve reciprocate at the same time, the normally open piston 29 pushes the normally open valve 22 to control the opening and closing of the normally open side gas path, and finally the bidirectional rapid and stable switching of the invention is realized.
The working process of the invention is described below:
a power-off state: after the gas is introduced into the gas inlet 18 of the valve body 45, and when the electromagnetic control device 1 in the pilot valve is in the power-off state, as shown in fig. 1, the pilot valve 4 closes the post rod channel 2 (simultaneously opens the pilot gas inlet channel 19), the gas entering the valve body 45 from the gas inlet 18 is divided into three paths, the first path of gas flows to the normally closed gas inlet channel 16, the second path of gas flows to the pilot gas inlet channel 19, and the third path of gas flows to the normally open gas inlet channel 20. The second path of gas enters the pilot valve cavity 33 through the pilot gas inlet channel 19, then enters the normally closed back pressure cavity 6 of the normally closed piston cavity 7 through the second gas channel 5, and applies gas pressure to one end, far away from the normally closed valve rod 11, of the normally closed piston 8. The first path of gas acts on one end, far away from the normally closed valve rod 11, of the normally closed valve 14, and the gas pressure of the second path of gas acting on the normally closed piston 8 is greater than the gas pressure of the first path of gas acting on the normally closed valve 14, so that the normally closed piston 8 pushes the normally closed valve 14 to move towards the normally closed gas inlet channel 16 until the normally closed gas inlet channel 16 is closed (meanwhile, the normally closed valve rod through hole 12 is opened), and meanwhile, in the process, the gas in the normally closed pressure relief cavity 10 is exhausted from the normally closed pressure relief hole 9. The third route is gaseous often opens inlet channel 20 and gets into normally open valve chamber 21 and promotes normally open valve 22 and move to normally open valve seat 25 and until closing normally open valve rod through-hole 24 (open normally open inlet channel 20 simultaneously), and simultaneously at this in-process, the gas that is located normally open backpressure chamber 31 enters into normally closed valve chamber 15 through first gas passage 32, and then normally closed valve rod through-hole 12 enters into normally closed pressure release chamber 10 again, discharges from normally closed pressure release hole 9 at last. After the normally open valve 22 closes the normally open stem through hole 24, the gas introduced into the normally open valve chamber 21 is discharged from the normally open side gas supply port 23. It can be seen that the gas introduced into the valve body 45 from the gas inlet 18 is eventually discharged from only the normally open side gas supply port 23, that is, the gas is supplied from the normally open side gas supply port 23.
And (3) electrifying state: after the gas is introduced into the gas inlet 18 of the valve body 45, and the electromagnetic control device 1 in the pilot valve is in a power-on state, as shown in fig. 2, the pilot valve 4 closes the pilot gas inlet channel 19 (simultaneously opens the ejector rod channel 2), the gas entering the valve body 45 from the gas inlet 18 is divided into three paths, the first path of gas flows to the normally closed gas inlet channel 16, the second path of gas flows to the pilot gas inlet channel 19 (since the pilot valve 4 has closed the pilot gas inlet channel 19, the second path of gas is only filled in the pilot gas inlet channel 19), and the third path of gas flows to the normally open gas inlet channel 20. Because the pilot valve 4 also opens the mandril channel 2 while closing the pilot inlet channel 19, the gas in the normally closed back pressure cavity 6 enters the pilot valve cavity 33 through the second gas channel 5 and then is discharged from the pilot pressure relief hole 3 of the mandril channel 2, and simultaneously under the action of gas pressure difference, the first path of gas pushes the normally closed valve 14 to move towards the normally closed valve seat 17 until the normally closed valve rod through hole 12 is closed (the normally closed inlet channel 16 is opened at the same time), and then the first path of gas enters the normally closed valve cavity 15. The first path of gas entering the normally closed valve cavity 15 is divided into two parts, one part is discharged from the normally closed side gas supply port 13, the other part enters the normally open back pressure cavity 31 through the first gas channel 32, and applies gas pressure to one end of the normally open piston 29 far away from the normally open valve rod 26. The gas pressure is exerted to third route gas in keeping away from normally open valve rod 26 one end of normally open valve 22, because the gas pressure that the first way gas acted on normally open piston 29 is greater than the gas pressure that third route gas acted on normally open valve 22, consequently, normally open piston 29 promotes normally open valve 22 to normally open inlet channel 20 motion until closing normally open inlet channel 20 (open normally open valve rod through-hole 24 simultaneously), and simultaneously at this in-process, the gas that is located normally open pressure release chamber 28 is discharged from normally open pressure release hole 27. It follows that the gas entering the valve body 45 through the gas inlet 18 is eventually discharged through the normally closed side gas supply port 13, i.e., the gas is supplied through the normally closed side gas supply port 13.
In order to enhance the sealing effect, elastic sealing materials (such as rubber) are arranged at two ends of the normally open valve 22, a knife edge is arranged on the valve body 45 at the periphery of the normally open air inlet channel 20 of the normally open valve cavity 21, and a knife edge is also arranged at one end, close to the normally open valve 22, of the normally open valve seat 25. Similarly, both ends of the normally closed valve 14 are provided with elastic sealing materials (such as rubber), a knife edge is arranged on the valve body 45 at the periphery of the normally closed air inlet channel 16 of the normally closed valve cavity 15, and a knife edge is also arranged at one end of the normally closed valve seat 17 close to the normally closed valve 14.
The invention has the following beneficial effects:
(1) the quick response switching function of the power-off reset type bidirectional switching electromagnetic valve is realized;
(2) the split structure of the regular polygon valve body 45, the valve and the piston can improve the reliability and shorten the manufacturing period;
(3) rapidly detecting the air tightness;
(4) the invention adopts the pneumatic control principle, optimizes the interaction force of the valve and the piston, greatly improves the stability of the electromagnetic valve under different use conditions, solves the problem that the main valve at the normally closed side (namely the normally closed valve 14) can not reset under the condition of first air release and then power failure, avoids the air leakage phenomenon at the normally closed side generated when the normally open side is reused for air supply, and improves the reliability and the safety of the product.
The test analysis result of the power-off reset type two-way switching electromagnetic valve is shown in the attached figure 6, the pressure of a normally open side and a normally closed side is analyzed in the test, when the power-off reset type two-way switching electromagnetic valve is switched from a power-on state to a power-off state, the pressure of the normally open side is built up, the gas of a normally closed side gas supply port 13 and the gas of a normally open back pressure cavity 31 are deflated through a normally closed pressure relief hole 9, the gas of the normally closed side is deflated, the gas enters the normally closed back pressure cavity 6 through a pilot gas inlet channel 19, a pilot valve cavity 33 and a second gas channel 5, and a normally closed piston 8 and a normally closed valve 14 are pushed until the normally closed gas inlet channel 16 is closed by the normally closed valve 14. When the power-off reset type bidirectional switching electromagnetic valve is powered on again, the state is switched to the power-on state from the power-off state, the electromagnetic control device 1 pushes the ejector rod 34, the ejector rod 34 pushes the pilot valve 4 to close the pilot air inlet channel 19 again, the gas in the normally closed back pressure cavity 6 enters the pilot pressure relief hole 3 through the pilot valve cavity 33 to be discharged, the gas enters the normally closed side air supply port 13 to build pressure on the normally closed side, meanwhile, the gas reaches the normally open back pressure cavity 31 through the first gas channel 32, the normally open piston 29 and the normally open valve 22 are pushed, the normally open air inlet channel 20 is closed until the normally open valve 22 closes, and the gas on the normally open side is discharged through the normally open pressure relief hole 27. The power-off reset type bidirectional switching electromagnetic valve completes one-time switching of the working gas circuit from power-off to power-on.
The above-mentioned embodiments are merely illustrative of the preferred embodiments of the present invention, and do not limit the scope of the present invention, and various modifications and improvements of the technical solution of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the spirit of the present invention.
Claims (9)
1. The utility model provides a two-way switching solenoid valve of outage formula that resets which characterized in that: comprises a valve body, wherein a normally open valve, a normally closed valve and a pilot valve are arranged on the valve body, an air inlet, a normally open side air supply port and a normally closed side air supply port are arranged on the valve body,
the normally open valve comprises a normally open valve, a normally open valve cavity, a normally open piston and a normally open piston cavity, wherein the normally open valve cavity and the normally open piston cavity are arranged in the valve body, the normally open valve and the normally open piston are respectively arranged in the normally open valve cavity and the normally open piston cavity, a normally open valve seat is arranged between the normally open valve cavity and the normally open piston cavity, a normally open valve rod through hole for communicating the normally open valve cavity and the normally open piston cavity is arranged on the normally open valve seat, a normally open valve rod is arranged between the normally open valve and the normally open piston and penetrates through the normally open valve rod through hole, the normally open piston divides the normally open piston cavity into a normally open pressure release cavity and a normally open back pressure cavity, the normally open pressure release cavity is positioned between the normally open piston and the normally open valve seat, a normally open pressure release hole communicated with the outside of the valve body is arranged on the normally open pressure release cavity, and a normally open air inlet channel communicated with an air inlet is arranged at one end of the normally open valve seat of the normally open valve cavity, the normally open valve cavity is provided with the normally open side air supply port communicated with the outside of the valve body,
the normally closed valve comprises a normally closed valve, a normally closed valve cavity, a normally closed piston and a normally closed piston cavity, wherein the normally closed valve cavity and the normally closed piston cavity are arranged in the valve body, the normally closed valve and the normally closed piston are respectively arranged in the normally closed valve cavity and the normally closed piston cavity, a normally closed valve seat is arranged between the normally closed valve cavity and the normally closed piston cavity, a normally closed valve rod through hole for communicating the normally closed valve cavity with the normally closed piston cavity is formed in the normally closed valve seat, a normally closed valve rod is arranged between the normally closed valve and the normally closed piston and penetrates through the normally closed valve rod through hole, the normally closed piston separates the normally closed piston cavity into a normally closed pressure release cavity and a normally closed backpressure cavity, the normally closed pressure release cavity is located between the normally closed piston and the normally closed valve seat, a normally closed pressure release hole communicated with the outside of the valve body is formed in the normally closed pressure release cavity, and a normally closed air inlet channel communicated with an air inlet is formed in one end of the normally closed valve seat of the normally closed valve cavity, the normally closed valve cavity is provided with the normally closed side air supply port communicated with the outside of the valve body,
the pilot valve comprises a pilot valve, a pilot valve cavity and an electromagnetic control device, the pilot valve cavity is arranged on the valve body, the pilot valve is arranged in the pilot valve cavity, the electromagnetic control device is arranged outside the valve body, a mandril channel communicated with the outside of the valve body is arranged on the pilot valve cavity, a mandril is arranged between the electromagnetic control device and the pilot valve, the mandril is positioned in the mandril channel, a pilot air inlet channel communicated with an air inlet is arranged at one end of the pilot valve cavity opposite to the mandril channel, the electromagnetic control device drives the pilot valve to move in the pilot valve cavity through the mandril to alternatively open or close the mandril channel and the pilot air inlet channel,
a first gas channel is arranged between a normally-open back pressure cavity and a normally-closed valve cavity of the normally-open piston cavity, a second gas channel is arranged between the normally-closed back pressure cavity and a pilot valve cavity of the normally-closed piston cavity, a pilot pressure relief hole communicated with the outside of the valve body is arranged on the ejector rod channel, a first spring is arranged in the normally-closed back pressure cavity, the first spring is arranged between the normally-closed piston and one end of a normally-closed valve seat opposite to the normally-closed piston cavity,
the specific mode that is equipped with normally open valve rod between normally open valve and the normally open piston does: the normally open valve rod comprises a first valve rod and a second valve rod which are oppositely arranged, the first valve rod is fixedly arranged on the normally open valve and is integrally formed with the normally open valve, the second valve rod is fixedly arranged on the normally open piston and is integrally formed with the normally open piston,
the specific mode that a normally closed valve rod is arranged between the normally closed valve and the normally closed piston is as follows: the normally closed valve rod comprises a third valve rod and a fourth valve rod which are oppositely arranged, the third valve rod is fixedly arranged on the normally closed valve and is integrally formed with the normally closed valve, the fourth valve rod is fixedly arranged on the normally closed piston and is integrally formed with the normally closed piston,
the air release valve is characterized in that air release nozzles are arranged on the normally open pressure release hole and the normally closed pressure release hole and are barrel-shaped, a barrel opening of each air release nozzle is connected to the normally open pressure release hole/the normally closed pressure release hole in a threaded mode, air release through holes are formed in the barrel wall of each air release nozzle, and leakage detection through holes are formed in the barrel bottom of each air release nozzle.
2. A power-off reset type bidirectional switching solenoid valve according to claim 1, characterized in that: be equipped with the normally open installation cavity that is used for installing normally open valve on the valve body, install normally open valve, normally open the valve seat, normally open the piston and normally open the blanking cover from inside to outside in proper order in the normally open installation cavity, normally open the valve seat and be the tube-shape, normally open the cylinder chamber of piston locating normally open the valve seat, the cylinder chamber of normally open the valve seat forms normally open the piston chamber, normally open the blanking cover and fix and locate in normally opening the installation cavity, the one end of normally open the valve seat offsets with normally open the blanking cover, the other end of normally open the valve seat offsets with the annular boss of normally opening on the installation cavity inner wall, normally open the valve seat and normally open between the installation cavity and normally open the blanking cover and normally open between the installation cavity and all be equipped with O type sealing washer.
3. The power-off reset type bidirectional switching electromagnetic valve according to claim 2, wherein one end of the normally open piston, which is provided with the second valve rod, is conical, a cylinder cavity of the normally open valve seat, which is close to one end of the normally open valve, is also conical, and the conical end of the normally open piston is matched with the conical cylinder cavity of the normally open valve seat.
4. A power-off reset type bidirectional switching solenoid valve according to claim 3, characterized in that: be equipped with the normally closed installation cavity that is used for installing the normal close valve on the valve body, install normally closed valve, normally closed valve seat, normally closed piston and normally closed blanking cover from inside to outside in the normally closed installation cavity in proper order, normally closed valve seat is the tube-shape, the section of thick bamboo intracavity of normally closed valve seat is located to the normally closed piston, the section of thick bamboo chamber of normally closed valve seat forms the normally closed piston chamber, the normally closed blanking cover is fixed to be located in the normally closed installation cavity, the one end and the normally closed blanking cover of normally closed valve seat offset, the other end of normally closed valve seat offsets with the second annular boss on the normally closed installation cavity inner wall, all be equipped with O type sealing washer between normally closed valve seat and the normally closed installation cavity and between normally closed blanking cover and the normally closed installation cavity.
5. The power-off reset type bidirectional switching electromagnetic valve according to claim 4, wherein one end of the fourth valve rod, which is provided with the normally closed piston, is conical, the cylinder cavity of the normally closed valve seat, which is close to one end of the normally closed valve, is also conical, and the conical end of the normally closed piston is matched with the conical cylinder cavity of the normally closed valve seat.
6. The power-off reset type bidirectional switching electromagnetic valve according to claim 5, characterized in that: the valve body is fixedly provided with a connecting cylinder, a valve seat is hermetically sleeved in the connecting cylinder, a pilot valve cavity is arranged at one end, close to the valve body, of the valve seat, a push rod channel is arranged at one end, far away from the valve body, of the valve seat, a second spring is arranged between one end, close to a pilot air inlet channel, of the pilot valve and the valve body, a third annular boss is arranged between the push rod channel and the pilot valve cavity, a columnar ejector head is arranged at one end, close to the third annular boss, of the push rod, one end, close to the third annular boss, of the pilot valve is conical, and the columnar ejector head abuts against the conical end of the pilot valve after penetrating through the third annular boss.
7. The power-off reset type bidirectional switching electromagnetic valve according to claim 6, characterized in that: electromagnetic control device includes the coil form housing, the periphery winding of coil form housing has the coil, the fixed quiet iron core that is equipped with of inner chamber lower extreme of coil form housing, the inner chamber upper end cover of coil form housing is equipped with moves the iron core, the lower extreme joint of quiet iron core has the adapter sleeve, adapter sleeve threaded connection is on the connecting cylinder, the lower extreme and the disk seat of quiet iron core offset, be equipped with O type sealing washer between disk seat and the connecting cylinder, keeping away from third annular boss one end of ejector pin and passing behind the quiet iron core fixed connection on moving the iron core, the outside of coil form housing is equipped with the casing, be equipped with the cable joint on the casing, the cable joint is connected with the coil electricity.
8. A power-off reset type bidirectional switching solenoid valve according to claim 7, wherein: the air inlet is provided with an air inlet nozzle, the air inlet nozzle is cylindrical, one end of the air inlet nozzle is in threaded sealing connection with the air inlet, and the other end of the air inlet nozzle is in threaded connection with an air inlet cap.
9. A power-off reset type bidirectional switching solenoid valve according to claim 8, wherein: the valve is characterized in that air supply nozzles are arranged on the normally open side air supply port and the normally closed side air supply port respectively, the air supply nozzles are cylindrical, one end of each air supply nozzle is in threaded sealing connection with the normally open side air supply port/the normally closed side air supply port, the other end of each air supply nozzle is in threaded connection with an air supply cap, and the valve body is a regular polygon body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465839.2A CN113294561B (en) | 2021-04-28 | 2021-04-28 | Power-off reset type bidirectional switching electromagnetic valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110465839.2A CN113294561B (en) | 2021-04-28 | 2021-04-28 | Power-off reset type bidirectional switching electromagnetic valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113294561A CN113294561A (en) | 2021-08-24 |
| CN113294561B true CN113294561B (en) | 2022-08-05 |
Family
ID=77320586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110465839.2A Active CN113294561B (en) | 2021-04-28 | 2021-04-28 | Power-off reset type bidirectional switching electromagnetic valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113294561B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115013723B (en) * | 2022-04-27 | 2024-03-29 | 河南江泰机械制造有限公司 | Pilot-operated valve pressurized quick-plug type high-pressure energy storage gas cylinder and high-pressure gas source device |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1530060A (en) * | 1976-10-09 | 1978-10-25 | Shoketsu Kinzoku Kogyo Kk | Solenoid pilot operated change-over valve |
| CN201531647U (en) * | 2009-09-18 | 2010-07-21 | 北京航天发射技术研究所 | Rapid switching valve |
| CN204716997U (en) * | 2015-06-19 | 2015-10-21 | 环球阀门集团有限公司 | The explosion-proof Emergeny Cutoff Valves of guide's direct acting Normally closed type |
| CN105546158B (en) * | 2016-01-13 | 2018-04-13 | 北京航天发射技术研究所 | A kind of two five-way electromagnetic valves of high pressure |
| CN107963072A (en) * | 2017-11-22 | 2018-04-27 | 瑞立集团瑞安汽车零部件有限公司 | Piston-type pressure controls antiskid valve and vehicle |
-
2021
- 2021-04-28 CN CN202110465839.2A patent/CN113294561B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113294561A (en) | 2021-08-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20200191287A1 (en) | Solenoid valve for inflation system | |
| CA2812270C (en) | Electromagnetic valve for a tank valve of a fuel supply system | |
| US10612723B2 (en) | Solenoid valve for inflation system | |
| CN113294561B (en) | Power-off reset type bidirectional switching electromagnetic valve | |
| CN109538773B (en) | High-pressure pilot-operated self-locking valve | |
| CN211550662U (en) | Multifunctional combined valve capable of realizing high-precision pressure reduction | |
| US5522424A (en) | Controlling the flow of fluids using solenoid-actuated valves | |
| CN209725387U (en) | A kind of normal-closed electromagnetic valve | |
| CN105822809A (en) | Electromagnetic actuator mounted on high-pressure gas integrated cylinder valve | |
| US3905689A (en) | Direct operating valve | |
| CN113294560B (en) | High-pressure bidirectional switching electric stop valve | |
| CN106740771B (en) | Suction valve for automobile electronic stability control system | |
| US2650616A (en) | Solenoid operated pilot valve and main gate valve | |
| CN210240730U (en) | Electromagnetic valve with auxiliary valve core | |
| KR100472295B1 (en) | Electromagnetic Compressor and Method of Manufacturing the Compressor | |
| CN209856398U (en) | Automatic air-release device for normal closed high-pressure valve fire work action | |
| CN109196210A (en) | For measuring the gas trap of fuel gas | |
| CN112483712A (en) | Anti-clamping high-sealing-performance electromagnetic valve | |
| WO2020124790A1 (en) | Relief valve for preventing water hammer | |
| CN215445266U (en) | Electric control valve element assembly and electric control valve | |
| CN218440739U (en) | High-pressure gas switch based on air pressure balance | |
| KR20150029825A (en) | Solenoid valve | |
| CN116176546A (en) | Normally closed high-pressure electromagnetic valve for aircraft brake system | |
| CN212272487U (en) | Novel electromagnetic pump | |
| CN111216926B (en) | Cold air propulsion system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |