CN113357414A - Gas self-closing valve - Google Patents
Gas self-closing valve Download PDFInfo
- Publication number
- CN113357414A CN113357414A CN202110619056.5A CN202110619056A CN113357414A CN 113357414 A CN113357414 A CN 113357414A CN 202110619056 A CN202110619056 A CN 202110619056A CN 113357414 A CN113357414 A CN 113357414A
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- Prior art keywords
- piece
- flow guide
- air inlet
- spring
- button
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Classifications
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/285—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only the cutting-off member being a ball
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- 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
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/06—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages
- F16K3/08—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members in the form of closure plates arranged between supply and discharge passages with circular plates rotatable around their centres
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/02—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor
- F16K3/04—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members
- F16K3/10—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with flat sealing faces; Packings therefor with pivoted closure members with special arrangements for separating the sealing faces or for pressing them together
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- 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
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/30—Details
- F16K3/32—Means for additional adjustment of the rate of flow
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Multiple-Way Valves (AREA)
Abstract
The invention relates to a gas self-closing valve, which comprises a valve body, a switch mechanism and a speed control mechanism, wherein the switch mechanism, the valve body and the speed control mechanism are sequentially communicated, the valve body comprises a shell, an air inlet end, an air outlet end and a lifting button, the switch mechanism comprises a straight cylinder, a rotary cylinder, a limiting spring, a flow guide piece, a shielding piece and a connecting piece, the speed control mechanism comprises a connecting end, a main body, a button, an adjusting spring, a ball, a support and an air outlet end, the gas self-closing valve is exquisite in design, the front end is arranged through a knob type switch structure, the sealing effect is improved, the rear end is adjustable according to actual flow limitation through an adjustable structural design, the orientation of the lifting button can be adjusted after the gas self-closing valve is installed through the movable structural design of the valve body, and the convenience of later-stage operation is improved.
Description
Technical Field
The invention particularly relates to a gas self-closing valve.
Background
The self-closing valve is installed on the pipeline of the low-pressure gas system, and when the gas supply pressure of the pipeline is under-pressure or over-pressure, the device can be automatically closed and needs to be manually opened without electricity or other external power. The self-closing valve arranged at the joint of the tail end of the pipeline and the rubber pipe behind the gas meter has the pressure-loss closing function.
The self-closing valve in the prior art can leak after being used for a period of time, an external switch can leak gas due to the fact that the external switch is designed to be simple, and although some self-closing valves can be provided with overflowing devices, the self-closing valves are fixed and limited in speed, and speed limit adjustment cannot be carried out according to actual requirements.
And when the installation, because the design is unreasonable, the lifting button of prior art often can make it just to wall or corner etc. inconvenient later stage operation maintenance because of the installation angle problem.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to overcome the defects of the prior art, a gas self-closing valve is provided.
The technical scheme adopted by the invention for solving the technical problems is as follows: a gas self-closing valve comprises a valve body, a switching mechanism and a speed control mechanism, wherein the switching mechanism, the valve body and the speed control mechanism are sequentially communicated;
the valve body comprises a shell, an air inlet end, an air outlet end and a lifting button, the air inlet end and the air outlet end are respectively arranged at two ends of the shell, the shell is respectively and movably connected with the air inlet end and the air outlet end, the lifting button is arranged at the upper end of the shell, the switching mechanism is hermetically connected with the air inlet end, the speed control mechanism is hermetically connected with the air outlet end, and the air inlet end is communicated with the air outlet end through the interior of the shell;
the switch mechanism comprises a straight cylinder, a rotary cylinder, a limiting spring, a flow guide piece, a shielding piece and a connecting piece, wherein one end of the straight cylinder is connected with an air inlet end, the connecting piece is arranged at one end of the straight cylinder, which is far away from the air inlet end, the rotary cylinder is sleeved on the straight cylinder, the rotary cylinder and the straight cylinder are coaxially arranged, the flow guide piece is arranged in the straight cylinder, the shielding piece is arranged at one side of the flow guide piece, which is far away from the air inlet end, one end of the limiting spring is connected with the air inlet end, the other end of the limiting spring is connected with the flow guide piece, the limiting spring is in a compression state, the flow guide piece and the shielding piece are both cylindrical, the diameters of the flow guide piece and the shielding piece are equal, the limiting spring, the flow guide piece and the shielding piece are all coaxially arranged with the straight cylinder, the outer peripheral surfaces of the flow guide piece and the shielding piece are all in sealing connection with the straight cylinder, and the periphery of the shielding piece is connected with the inner wall of the rotary cylinder, the baffle piece is provided with two switch holes with the same size and shape as the diversion holes, and the switch holes correspond to the diversion holes in position;
the speed control mechanism comprises a connecting end, a main body, a button, an adjusting spring, balls, a support and an exhaust end, wherein the connecting end is connected with the air outlet end, the connecting end is communicated with the exhaust end through the main body, the balls are arranged in the main body, the connecting end and the exhaust end are respectively arranged on two sides of the balls, gaps are formed between the connecting end and the exhaust end and between the connecting end and the balls, the support is arranged below the balls, an arc-shaped groove matched with the balls is arranged on the support, the circle center of the arc-shaped groove coincides with the circle center of the balls, the adjusting spring is vertically arranged in the main body, the button is arranged at the upper end of the adjusting spring, the button is arranged outside the main body, the upper end of the adjusting spring is connected with the button, the lower end of the adjusting spring is connected with the balls, and the adjusting spring is in a compression state.
Preferably, the upper end of the ball is provided with a groove, and the lower end of the adjusting spring extends into the groove of the ball.
Preferably, the limiting spring is a conical spring, and one end of the limiting spring with the smaller diameter is connected with the flow guide piece.
The gas self-closing valve has the advantages that the gas self-closing valve is exquisite in design, the front end of the gas self-closing valve is arranged through the knob type switch structure, the sealing effect is improved, the rear end of the gas self-closing valve is adjustable according to actual flow limitation through an adjustable structural design, the orientation of the lifting knob can be adjusted after the gas self-closing valve is installed through the movable structural design of the valve body, and convenience in later operation is improved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the gas self-closing valve of the present invention;
FIG. 2 is a schematic structural view of the gas self-closing valve of the present invention;
FIG. 3 is an enlarged view of portion A of FIG. 2;
FIG. 4 is an enlarged view of portion B of FIG. 2;
FIG. 5 is a schematic view of the structure of the flow guide of the gas self-closing valve of the present invention;
FIG. 6 is a schematic view of the structure of the shutter of the gas self-closing valve of the invention
In the figure: 1. the air conditioner comprises a shell, a gas inlet end, a gas outlet end, a lifting button, a straight cylinder, a rotating cylinder, a limiting spring, a flow guide piece, a shielding piece, a connecting end, a button, a regulating spring, a ball, a support and an air outlet end, wherein the shell comprises 2, the gas inlet end, 3, the gas outlet end, 4, the lifting button, 5, the straight cylinder, 6, the rotating cylinder, 7, the limiting spring, 8, the flow guide piece, 9, the shielding piece, 10, the connecting piece, 11, the connecting end, 12, the button, 13, the regulating spring, 14, the ball, 15, the support and 16.
Detailed Description
The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic views illustrating only the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
As shown in fig. 1-6, a gas self-closing valve comprises a valve body, a switching mechanism and a speed control mechanism, wherein the switching mechanism, the valve body and the speed control mechanism are communicated in sequence;
the valve body comprises a shell 1, an air inlet end 2, an air outlet end 3 and a lifting button 4, wherein the air inlet end 2 and the air outlet end 3 are respectively arranged at two ends of the shell 1, the shell 1 is respectively movably connected with the air inlet end 2 and the air outlet end 3, the lifting button 4 is arranged at the upper end of the shell 1, the switching mechanism is hermetically connected with the air inlet end 2, the speed control mechanism is hermetically connected with the air outlet end 3, and the air inlet end 2 is communicated with the air outlet end 3 through the interior of the shell 1;
in fact, still be equipped with the valve rod in the valve body, the conventional self-closing switch structure such as case, here through the sealing connection of inlet end 2 and end 3 and the external member of giving vent to anger, realize conventional water conservancy diversion air guide function, and realize movable being connected with casing 1, be similar to rotary joint's connected mode, just can make casing 1 realize the free rotation, after the installation is accomplished, can adjust the angle of carrying button 4, make it move towards the operator all the time, just so can make later stage operation and maintenance more convenient.
The switch mechanism comprises a straight cylinder 5, a rotating cylinder 6, a limiting spring 7, a flow guide piece 8, a shielding piece 9 and a connecting piece 10, wherein one end of the straight cylinder 5 is connected with the air inlet end 2, the connecting piece 10 is arranged at one end of the straight cylinder 5 far away from the air inlet end 2, the rotating cylinder 6 is sleeved on the straight cylinder 5, the rotating cylinder 6 and the straight cylinder 5 are coaxially arranged, the flow guide piece 8 is arranged in the straight cylinder 5, the shielding piece 9 is arranged at one side of the flow guide piece 8 far away from the air inlet end 2, one end of the limiting spring 7 is connected with the air inlet end 2, the other end of the limiting spring 7 is connected with the flow guide piece 8, the limiting spring 7 is in a compression state, the flow guide piece 8 and the shielding piece 9 are cylindrical, the flow guide piece 8 is equal to the diameter of the shielding piece 9, the limiting spring 7, the flow guide piece 8 and the shielding piece 9 are all coaxially arranged with the straight cylinder 5, the peripheral surfaces of the flow guide piece 8 and the shielding piece 9 are all in sealing connection with the straight cylinder 5, the periphery of the shielding piece 9 is connected with the inner wall of the rotary cylinder 6, two guide holes are symmetrically arranged on the guide piece 8, the guide holes are fan-shaped, the included angle of the guide holes is 90 degrees, two switch holes with the same size and shape as the guide holes are arranged on the shielding piece 9, and the positions of the switch holes correspond to the positions of the guide holes;
the connecting piece 10 is mainly an external air pipe, the rotary cylinder 6 actually plays the role of a rotary switch, and air flows through the switch hole and the guide hole through the connecting piece 10 and then enters the air inlet end 2, so that the air enters the valve body.
In fact, the diversion piece 8 and the shielding piece 9 form a rotary switch structure, when the positions of a switch hole and a diversion hole are aligned, the maximum conduction state is formed, the rotation of the shielding piece 9 is driven through the rotation of the rotary cylinder 6, the non-opening part of the shielding piece 9 just shields the diversion hole of the diversion piece after rotating for 90 degrees, the closing function is realized, the limiting spring 7 is mainly used for supporting the diversion piece 8, the diversion piece 8 can be tightly attached to the shielding piece 9, the sealing effect between the two parts is improved, and the limiting spring 7 is designed to be conical, and the convenience in installation is mainly improved.
Adopt above-mentioned rotation type switch structure, compare in current ball valve structure, sealing performance is better, long service life moreover, prior art's ball valve is very easy because get into impurity and take place the seepage, and rotation type switch structure opens or closes the self-eliminating that the in-process formed impurity very easily at self.
The speed control mechanism comprises a connecting end 11, a main body, a button 12, an adjusting spring 13, a ball 14, a support 15 and an exhaust end 16, wherein the connecting end 11 is connected with the air outlet end 3, the connecting end 11 is communicated with the exhaust end 16 through the main body, the ball 14 is arranged in the main body, the connecting end 11 and the exhaust end 16 are respectively positioned at two sides of the ball 14, gaps are respectively arranged between the connecting end 11 and the exhaust end 16 and the ball 14, the support 15 is arranged below the ball 14, an arc-shaped groove matched with the ball 14 is arranged on the support 15, the circle center of the arc-shaped groove is superposed with the circle center of the ball 14, the adjusting spring 13 is vertically arranged in the main body, the button 12 is arranged at the upper end of the adjusting spring 13, the button 12 is positioned outside the main body, the upper end of the adjusting spring 13 is connected with the button 12, and the lower end of the adjusting, the adjustment spring 13 is in a compressed state.
The air flow passes through the connecting end 11 from the air outlet end 3 and then passes through the main body, enters the air outlet end 16 through a gap between the connecting end 11 and the ball 14 and a gap between the air outlet end 16 and the ball 14, and the button 12 is pressed to adjust the tightness of the adjusting spring 13, namely the elasticity of the adjusting spring 13.
During normal state, ball 14 is pressed in the arc wall of support 15 by adjusting spring 13, the thrust that the air current that gets into from link 11 produced ball 14 can't make ball 14 shift, when the air current is too big, will produce great thrust to ball 14, at this moment, the arc wall of support 15 is less than the air current when the thrust that the air current produced ball 14 produced to the thrust of the side direction (opposite with the thrust direction that the air current produced) thrust of ball 14, ball 14 will break away from the arc wall, move to the one side of keeping away from link 11, be close to exhaust end 16 promptly, after the air current can offset adjusting spring 13's lateral deformation power completely to ball 14's thrust, ball 14 will be pressed on exhaust end 16 completely, thereby block up the entrance to a cave of exhaust end 16, realize the closure seal.
Here, the arc-shaped groove is provided on the support 15, and the sensitivity is higher compared with the rectangular groove or the groove with other shapes, because the arc-shaped groove can be actually completely attached to the ball 14, so that the ball 14 can easily slide out of the groove, and here, the upper limit value of the flow rate is controlled by the extrusion degree of the button 12 to the adjusting spring 13, namely, the tighter the pressing is, the higher the upper flow rate value is, the structure has high sensitivity, and is convenient to realize adjustment and wide in application range.
In addition, after the installation, the whole speed control mechanism can be rotated, if the button 12 is located in the main body 12 o ' clock direction, the ball 14 is in a stretching state to the spring 13 due to the self gravity, and if the button 12 is located in the main body 6 o ' clock direction, the ball 14 is in a pressing state to the spring 13 due to the self gravity, the sensitivity of the two states is different, including the button 12 is located in the main body 3 o ' clock direction or 9 o ' clock direction, and in this adjusting state, the peak value is the largest and the ball 14 is located in the 6 o ' clock direction.
Here, through the pressing of the button 12, the button 12 can be stopped at a certain position, that is, the static control and adjustment of the length of the spring 13 are realized, and then the dynamic adjustment can be realized through the whole body, and the two adjustment modes are combined, so that the adjustment accuracy and the use practicability are improved.
Preferably, the upper end of the ball 14 is provided with a groove, and the lower end of the adjusting spring 13 extends into the groove of the ball 14.
Preferably, the limiting spring 7 is a conical spring, and one end of the limiting spring 7 with a smaller diameter is connected with the flow guide piece.
Compared with the prior art, this gas self-closing valve design is exquisite, and the front end passes through knob formula on-off structure and sets up, has improved sealed effect, and structural design with adjustable the rear end is passed through, can adjust according to actual flow restriction, through the movable structural design to the valve body, after the installation, can realize adjusting carrying the button orientation, has improved the convenience of later stage operation.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (3)
1. A gas self-closing valve comprises a valve body and is characterized by further comprising a switching mechanism and a speed control mechanism, wherein the switching mechanism, the valve body and the speed control mechanism are sequentially communicated;
the valve body comprises a shell, an air inlet end, an air outlet end and a lifting button, the air inlet end and the air outlet end are respectively arranged at two ends of the shell, the shell is respectively and movably connected with the air inlet end and the air outlet end, the lifting button is arranged at the upper end of the shell, the switching mechanism is hermetically connected with the air inlet end, the speed control mechanism is hermetically connected with the air outlet end, and the air inlet end is communicated with the air outlet end through the interior of the shell;
the switch mechanism comprises a straight cylinder, a rotary cylinder, a limiting spring, a flow guide piece, a shielding piece and a connecting piece, wherein one end of the straight cylinder is connected with an air inlet end, the connecting piece is arranged at one end of the straight cylinder, which is far away from the air inlet end, the rotary cylinder is sleeved on the straight cylinder, the rotary cylinder and the straight cylinder are coaxially arranged, the flow guide piece is arranged in the straight cylinder, the shielding piece is arranged at one side of the flow guide piece, which is far away from the air inlet end, one end of the limiting spring is connected with the air inlet end, the other end of the limiting spring is connected with the flow guide piece, the limiting spring is in a compression state, the flow guide piece and the shielding piece are both cylindrical, the diameters of the flow guide piece and the shielding piece are equal, the limiting spring, the flow guide piece and the shielding piece are all coaxially arranged with the straight cylinder, the outer peripheral surfaces of the flow guide piece and the shielding piece are all in sealing connection with the straight cylinder, and the periphery of the shielding piece is connected with the inner wall of the rotary cylinder, the baffle piece is provided with two switch holes with the same size and shape as the diversion holes, and the switch holes correspond to the diversion holes in position;
the speed control mechanism comprises a connecting end, a main body, a button, an adjusting spring, balls, a support and an exhaust end, wherein the connecting end is connected with the air outlet end, the connecting end is communicated with the exhaust end through the main body, the balls are arranged in the main body, the connecting end and the exhaust end are respectively arranged on two sides of the balls, gaps are formed between the connecting end and the exhaust end and between the connecting end and the balls, the support is arranged below the balls, an arc-shaped groove matched with the balls is arranged on the support, the circle center of the arc-shaped groove coincides with the circle center of the balls, the adjusting spring is vertically arranged in the main body, the button is arranged at the upper end of the adjusting spring, the button is arranged outside the main body, the upper end of the adjusting spring is connected with the button, the lower end of the adjusting spring is connected with the balls, and the adjusting spring is in a compression state.
2. A gas self-closing valve as recited in claim 1 wherein the ball has a groove at its upper end and the lower end of said adjustment spring extends into the groove of the ball.
3. The gas self-closing valve as recited in claim 1, wherein the limiting spring is a conical spring, and the end with the smaller diameter of the limiting spring is connected with the flow guide element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110619056.5A CN113357414A (en) | 2021-06-03 | 2021-06-03 | Gas self-closing valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110619056.5A CN113357414A (en) | 2021-06-03 | 2021-06-03 | Gas self-closing valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113357414A true CN113357414A (en) | 2021-09-07 |
Family
ID=77531536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110619056.5A Pending CN113357414A (en) | 2021-06-03 | 2021-06-03 | Gas self-closing valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113357414A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110653A (en) * | 2021-11-25 | 2022-03-01 | 陕西航天西诺美灵电气有限公司 | Double-channel safety ignition mechanism and method |
-
2021
- 2021-06-03 CN CN202110619056.5A patent/CN113357414A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114110653A (en) * | 2021-11-25 | 2022-03-01 | 陕西航天西诺美灵电气有限公司 | Double-channel safety ignition mechanism and method |
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