CN214367778U - Liquefied gas cylinder stop valve - Google Patents
Liquefied gas cylinder stop valve Download PDFInfo
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- CN214367778U CN214367778U CN202120069176.8U CN202120069176U CN214367778U CN 214367778 U CN214367778 U CN 214367778U CN 202120069176 U CN202120069176 U CN 202120069176U CN 214367778 U CN214367778 U CN 214367778U
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Abstract
The utility model discloses a liquefied gas cylinder stop valve is equipped with inlet port, orifice, gas distribution chamber, silk hole, the case hole that communicates in proper order in the valve body, and the case is installed and can be followed the rotatory translation of silk hole in the valve body, and the gas distribution chamber passes through outside the venthole intercommunication valve body, and the case front end can remove the shutoff orifice to the inlet port, also can remove to the valve body rear end, makes gas distribution chamber intercommunication inlet port, and the manual or electronic revolving of case rear end accessible is twisted, makes case reciprocating motion, the utility model discloses can solve liquid ammonia steel bottle safe in utilization, reliable on the motor vehicle effectively.
Description
Technical Field
The utility model relates to a steel bottle technical field especially relates to automobile-used liquid ammonia steel bottle can realize valve automatic remote control's stop valve.
Background
In the present traditional gas cylinder valve, the valve is opened and is closed the function and all realize manually, the electromagnetism mode basically, needs personnel to close on the valve operation, is difficult to realize intelligent control, and the malfunction appears in the valve closure easily, leads to the valve not to close totally, has the potential safety hazard of leaking. The traditional gas cylinder valve sealing mode has no compensation structure, and the valve can be leaked after the sealing ring is abraded. The traditional gas cylinder valve is generally a single flow passage, a plurality of valves are required to be installed on a gas cylinder when a plurality of flow passages are required, and both a plurality of holes are required to be formed in the gas cylinder, so that the problem of a series of potential safety hazards is brought invisibly.
For example, in recent years, the national emphasis on environmental protection and the stricter requirements on energy conservation and emission reduction are made, and among them, the diesel engine of the diesel vehicle adopts a compression ignition working mode, so that nitrogen in the air can be converted into a large amount of nitrogen oxides (NOx) under the combustion conditions of high temperature and oxygen enrichment, and the nitrogen oxides (NOx) have great damage to the environment, are one of main substances forming acid rain, important substances forming photochemical smog in the atmosphere and ozone (O) consumption3) The patent 202010687135.5 discloses that the effect of reducing emission of nitrogen oxides (NOx) can be well achieved by directly using liquid ammonia to treat the nitrogen oxides (NOx) in the tail gas of the diesel vehicle because the treatment of the nitrogen oxides (NOx) is imperative.
Automobile-used liquid ammonia steel bottle splendid attire is handled tail gas on the motor vehicle, need be according to vehicle engine's rotational speed, the injection of moment of torsion continuous control liquid ammonia through ECU, if adopt the solenoid valve to come the injection of continuous control liquid ammonia, because the solenoid valve maintains the on state for a long time and can lead to the overheated scaling loss of coil, and liquid ammonia belongs to poisonous hazardous articles, can lead to spouting ammonia excessive or the car also spouts the ammonia when not using after the solenoid valve became invalid, it is necessary to develop and design one kind and can combine to replace solenoid valve control case to satisfy the safe and stable supply of gas in the steel bottle with the motor by the ability, prevent to reveal.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a liquefied gas cylinder stop valve, case rear end can be manual revolve twist soon or form novel automatically controlled stop valve with motor drive's mobile device cooperation, the utility model discloses a structure is the indispensable key standard spare part of novel automatically controlled stop valve.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a liquefied gas cylinder shut-off valve comprising:
the valve comprises a valve body, wherein an air inlet hole, a flow intercepting hole, a valve cavity hole, a threaded hole and a valve core hole which are sequentially communicated are formed in the valve body from the front end to the rear end, the diameter of the flow intercepting hole is smaller than that of the valve cavity hole, the diameter of the threaded hole is smaller than that of the valve cavity hole and that of the valve core hole, the valve cavity hole is communicated to a reaction chamber outside the valve body through an air outlet hole and a pipeline, and the front end of the valve body is connected with a gas cylinder valve seat to enable a gas cylinder to be communicated with the air inlet hole;
the front end of the valve core penetrates through the valve core hole and extends into the valve cavity hole, the front end of the valve core can block the cut-off hole, the front end of the valve core is provided with a valve rod in clearance fit with the valve cavity hole, the valve core hole is divided into a valve core hole rear section and a valve core hole front section with diameters decreasing in sequence from the valve body rear end to the valve body front end, a sealing assembly is arranged in the valve core hole and can prevent a medium in an air inlet hole from leaking outwards through the valve cavity hole, a threaded hole and the valve core hole, the threaded hole is in threaded connection with the valve core, and the valve core can rotate and do telescopic motion along the axial direction of the threaded hole;
a seal assembly comprising: the O-shaped sealing ring is arranged at the front section of the valve core hole and sleeved outside the valve core, the gland is used for compressing the O-shaped sealing ring at the rear section of the valve core hole, the gland is fixedly connected with the rear section of the valve core hole through threads, and the rear end of the valve core penetrates through the central hole of the gland and is exposed out of the rear end of the valve body.
Further, the reaction chamber is an exhaust pipe for tail gas containing nitrogen oxide gas.
Furthermore, annular gaskets are padded between the O-shaped sealing ring and the gland and between the O-shaped sealing ring and the screw hole.
The electric valve commonly used at present is electric ball valve, and electric ball valve switching in-process sealed face's frictional force is big, easy loss moreover, and sphere machining precision requires highly, and it is noble to make cost of maintenance, the utility model discloses a stop valve is than little than the frictional force of conventional electric ball valve between the sealed face of valve switching in-process, and is more durable, opens highly little, and it is easy to make, easy maintenance.
The utility model relates to a rationally, simple structure, convenient to use is applicable to various steel bottles use of automobile-used liquid ammonia steel bottle very much.
According to the structural design of the stop valve of the utility model, the back end of the hand-held valve core is screwed to realize that the valve core rotates along the axial direction to seal or open the cut-off hole between the air inlet hole and the air outlet hole; the gland, the annular gasket and the O-shaped sealing ring form a sealing compensation device, a gap is formed between the O-shaped sealing ring and the valve core after the O-shaped sealing ring is abraded, the gap can be reduced by screwing the gland to extrude the annular gasket, the sealing compensation effect is achieved, the valve sealing performance is optimal, a medium in the gas cylinder is prevented from leaking, and safe and reliable supply of the gas cylinder is achieved; a plurality of air outlet holes are arranged on the valve body, so that simultaneous supply can be realized; the air outlet hole at the front end of the valve body is communicated to the outside of the valve body through a pipeline to use and fill media, and the air inlet hole is communicated with the air bottle through an air bottle valve seat. Because the valve core is in threaded connection with the threaded hole, the valve core can be stable under working conditions after moving for a certain distance, and the valve core cannot be pushed by pressure applied to the valve core in the air inlet hole, so that the valve is high.
The O-shaped sealing ring and the front and rear annular gaskets form a sealing structure, when the O-shaped sealing ring is worn, gaps between the worn O-shaped sealing ring and the valve body and between the worn O-shaped sealing ring and the valve core can be reduced by screwing the pressing cover to extrude, a sealing effect is achieved, leakage is prevented, and the annular gaskets can avoid the end face of the O-shaped sealing ring relative to the threaded hole or the end face of the pressing cover when the pressing cover or the valve core is screwed.
Drawings
FIG. 1 is a perspective view showing the appearance of a stop valve for a liquefied gas cylinder;
FIG. 2 is a schematic cross-sectional view of a stop valve of a liquefied gas cylinder;
FIG. 3 is a schematic diagram showing three flow passage outlets of a liquefied gas cylinder stop valve being uniformly distributed;
wherein: 1-valve body, 2-valve core, 20-air inlet hole, 21-orifice, 22-air distribution cavity, 23-screw hole, 24-valve core hole, 25-air outlet hole, 26-valve rod, 27-valve core hole rear section, 28-valve core hole front section, 3-O type sealing ring, 31-annular gasket, 4-gland, 6-through hole, 7-worm wheel, 11-front end of valve body and 12-rear end of valve body.
Detailed Description
The present invention is described in further detail below with reference to the following figures and specific examples, which should not be construed as limiting the invention.
Example 1:
as shown in fig. 1, a stop valve for a liquefied gas cylinder includes: according to the valve body 1, as shown in fig. 2, an air inlet hole 20, an intercepting hole 21, a valve cavity hole 22, a threaded hole 23 and a valve core hole 24 which are sequentially communicated are arranged in the valve body 1 from the front end 11 to the rear end 12 of the valve body, the diameter of the intercepting hole 21 is smaller than that of the valve cavity hole 22, the diameter of the threaded hole 23 is smaller than that of the valve cavity hole 22 and that of the valve core hole 24, the valve cavity hole 22 is connected with an external pipeline through an air outlet hole 25, and the front end of the valve body 1 is connected with a valve seat of a gas cylinder, so that the interior of the gas cylinder is communicated with the air inlet hole 20;
the front end of the valve core 2 penetrates through the valve core hole 24 and extends into the valve cavity hole 22, the front end of the valve core 2 can seal the cutoff hole 21, the front end of the valve core 2 is provided with a valve rod 26 in clearance fit with the valve cavity hole 22, a sealing assembly is arranged in the valve core hole 24 and can prevent a medium in the air inlet hole 20 from leaking outwards through the valve cavity hole 22, the threaded hole 23 and the valve core hole 24, the threaded hole 23 is in threaded connection with the valve core 2, and the valve core 2 can be rotated to do telescopic motion along the axial direction of the threaded hole 23.
The air outlet 25 of the valve body 1 is communicated with the outer end through a pipeline, and can be a medium using unit or an inlet and outlet for loading and unloading media to the gas cylinder.
As shown in fig. 1, the external thread of the front end 11 of the valve body can be communicated with the valve seat of the gas cylinder for sealing connection, so that the medium is conveyed inside the gas cylinder.
The valve core hole 24 is divided into a valve core hole rear section 27 and a valve core hole front section 28 with successively decreasing diameters from the rear end of the valve body 1 to the front end of the valve body 1, and the sealing assembly comprises: the O-shaped sealing ring 3 is arranged at the front section 28 of the valve core hole and sleeved outside the valve core 2, the gland 4 is used for compressing the O-shaped sealing ring 3 at the rear section 27 of the valve core hole, and the gland 4 is fixedly connected with the rear section 27 of the valve core hole through threads. Annular gaskets 31 are padded between the O-shaped sealing ring 3 and the gland 4 and between the O-shaped sealing ring 3 and the threaded hole 23. The rear end of the valve core 2 passes through the central hole of the gland 4 and is exposed out of the rear end of the valve body 1.
According to fig. 2, when the valve core 2 and the O-shaped sealing ring 3 are worn, a gap is generated, the overall sealing performance of the valve body 1 is affected, and risks such as leakage are possibly caused, so that the O-shaped sealing ring 3 can be extruded by a sealing compensation device consisting of the gland 4, the O-shaped sealing ring 3 and the annular gasket 31 to perform sealing compensation, and thus good sealing compensation can be performed after the valve core is worn, better sealing performance is achieved, and the valve is safer and more reliable.
According to the graph 3, the valve body air outlet 25 adopts the multi-flow channel supply of the three flow channels, so that the supply of the valve can be realized simultaneously when a plurality of units are required to be supplied, the valve does not need to be added in the steel cylinder body or the spliced outer pipeline is refitted, the split joint of the steel cylinder perforated pipeline is realized, and the whole safe reliability of the steel cylinder is improved.
In the embodiment, the rear end of the valve core 2 can be opened and closed by manually screwing, and the rear end of the valve core 2 can also be driven by a motor to rotate through a transmission structure, so that the aim of remote electric control is fulfilled.
The above the implementation method of the present invention is not limited to the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to the related technical fields, and all the same principles are included in the protection scope of the present invention. Details not described in the present specification belong to the prior art known to those skilled in the art.
Claims (3)
1. A liquefied gas cylinder stop valve, comprising:
the valve comprises a valve body, wherein an air inlet hole, a flow intercepting hole, a valve cavity hole, a threaded hole and a valve core hole which are sequentially communicated are formed in the valve body from the front end to the rear end, the diameter of the flow intercepting hole is smaller than that of the valve cavity hole, the diameter of the threaded hole is smaller than that of the valve cavity hole and that of the valve core hole, the valve cavity hole is communicated to a reaction chamber outside the valve body through an air outlet hole and a pipeline, and the front end of the valve body is connected with a gas cylinder valve seat to enable a gas cylinder to be communicated with the air inlet hole;
the front end of the valve core penetrates through the valve core hole and extends into the valve cavity hole, the front end of the valve core can block the cut-off hole, the front end of the valve core is provided with a valve rod in clearance fit with the valve cavity hole, the valve core hole is divided into a valve core hole rear section and a valve core hole front section with diameters decreasing in sequence from the valve body rear end to the valve body front end, a sealing assembly is arranged in the valve core hole and can prevent a medium in an air inlet hole from leaking outwards through the valve cavity hole, a threaded hole and the valve core hole, the threaded hole is in threaded connection with the valve core, and the valve core can rotate and do telescopic motion along the axial direction of the threaded hole;
a seal assembly comprising: the O-shaped sealing ring is arranged at the front section of the valve core hole and sleeved outside the valve core, the gland is used for compressing the O-shaped sealing ring at the rear section of the valve core hole, the gland is fixedly connected with the rear section of the valve core hole through threads, and the rear end of the valve core penetrates through the central hole of the gland and is exposed out of the rear end of the valve body.
2. The liquefied gas cylinder shut-off valve according to claim 1, wherein the reaction chamber is an exhaust pipe for a tail gas containing an nitrogen oxide-containing gas.
3. The liquefied gas cylinder stop valve according to claim 1, wherein annular gaskets are padded between the O-ring and the gland and between the O-ring and the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120069176.8U CN214367778U (en) | 2021-01-12 | 2021-01-12 | Liquefied gas cylinder stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120069176.8U CN214367778U (en) | 2021-01-12 | 2021-01-12 | Liquefied gas cylinder stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214367778U true CN214367778U (en) | 2021-10-08 |
Family
ID=77954630
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120069176.8U Active CN214367778U (en) | 2021-01-12 | 2021-01-12 | Liquefied gas cylinder stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214367778U (en) |
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2021
- 2021-01-12 CN CN202120069176.8U patent/CN214367778U/en active Active
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