阅读说明：本技术 一种实现智能化控制的气瓶阀门 (Gas cylinder valve capable of realizing intelligent control ) 是由 谢国清 黄焕涛 胡杨 李晓强 马玥 张立成 张榕焯 陈云潮 于 2021-01-12 设计创作，主要内容包括：本发明公布了一种实现智能化控制的气瓶阀门,阀体中设有依次连通的进气孔、截流孔、阀腔孔、螺纹孔、阀芯孔,阀芯安装在阀体内可沿螺纹孔旋转平移,阀腔孔通过出气孔连通阀体外,阀芯前端能向进气孔移动封堵截流孔,也可向阀体后端移动,使阀腔孔连通进气孔,阀芯后端被涡轮驱动,涡轮与蜗杆啮合,蜗杆被减速电机驱动,减速电机与控制器信号连接,通过堵转电流控制减速电机的启停,使阀芯往复移动,本发明能够有效地解决气瓶在机动车上使用安全、可靠,实现自动远程控制。(The invention discloses a gas cylinder valve for realizing intelligent control, wherein a valve body is provided with an air inlet hole, an intercepting hole, a valve cavity hole, a threaded hole and a valve core hole which are sequentially communicated, a valve core is arranged in the valve body and can rotate and translate along the threaded hole, the valve cavity hole is communicated with the outside of the valve body through an air outlet hole, the front end of the valve core can move towards the air inlet hole to block the intercepting hole and can also move towards the rear end of the valve body, so that the valve cavity hole is communicated with the air inlet hole, the rear end of the valve core is driven by a turbine, the turbine is meshed with a worm, the worm is driven by a speed reducing motor, the speed reducing motor is in signal connection with a controller, and the start and stop of the speed reducing motor are controlled by a blocking current to.)

1. The utility model provides a realize cylinder valve of intelligent control which characterized in that includes:

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;

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, 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 rear end of the valve core is exposed out of the rear end of the valve body and is sleeved with a turbine, the threaded hole is in threaded connection with the valve core, the turbine is in sliding connection with the rear end of the valve core, the rear end of the valve core is provided with keys and grooves which are parallel to the longitudinal direction of the valve core and are uniformly arranged along the periphery of the valve core, the inner periphery of the turbine is provided with a combination part which is parallel to the keys and the grooves and is embedded into the keys and the grooves, and;

the valve cover is arranged at the rear end of the valve body, a space for accommodating the turbine is formed between the valve cover and the rear end of the valve body, one side of the valve cover, which faces the valve body, is concave inwards, so that the valve core can move to the valve cover by the driving of the turbine without being blocked by the front end of the valve core, the worm is arranged in the space and meshed with the turbine, and the worm is driven by the speed reducing motor;

the speed reducing motor is in signal connection with the controller, the stop of the speed reducing motor is controlled when the valve core completely blocks the cutoff hole or the valve core contacts the valve cover and the controller receives a locked-rotor heavy current generated by the speed reducing motor instantly.

2. The gas cylinder valve for realizing intelligent control according to claim 1, wherein the reaction chamber is an exhaust pipe for tail gas containing nitrogen oxide gas.

3. The gas cylinder valve realizing intelligent control according to claim 1, wherein a special-shaped hole is formed in one end of the worm, which faces away from the speed reduction motor, and a through hole facing the special-shaped hole is formed in the valve cover.

4. The gas cylinder valve realizing intelligent control according to claim 1, wherein the valve core hole is divided into a valve core hole rear section and a valve core hole front section with successively decreasing diameters from the valve body rear end to the valve body front end, and the sealing assembly comprises: 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, and the gland is fixedly connected with the rear section of the valve core hole through threads.

5. The gas cylinder valve realizing intelligent control according to claim 4, wherein annular gaskets are padded between the O-shaped sealing ring and the gland and between the O-shaped sealing ring and the threaded hole.

Technical Field

The invention relates to the technical field of gas cylinder valves, in particular to a gas cylinder valve for a vehicle gas cylinder, which can realize intelligent control.

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 behind the solenoid valve inefficacy also when spouting ammonia excessive or the car does not use, it supplies with to be necessary to develop the safe and stable of the gas cylinder control valve ' that "a realizes intelligent control's gas cylinder integration automatic control valve" replacement solenoid valve core satisfies the steel bottle in the.

Disclosure of Invention

In view of the above, the invention provides a gas cylinder valve for realizing intelligent control, which can effectively solve the problems of safe and reliable use of a liquid ammonia gas cylinder on a motor vehicle and realize automatic remote control.

In order to achieve the purpose, the invention adopts the following technical scheme:

a gas cylinder valve for realizing intelligent control comprises:

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;

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, 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 rear end of the valve core is exposed out of the rear end of the valve body and is sleeved with a turbine, the threaded hole is in threaded connection with the valve core, the turbine is in sliding connection with the rear end of the valve core, the rear end of the valve core is provided with keys and grooves which are parallel to the longitudinal direction of the valve core and are uniformly arranged along the periphery of the valve core, the inner periphery of the turbine is provided with a combination part which is parallel to the keys and the grooves and is embedded into the keys and the grooves, and;

the valve cover is arranged at the rear end of the valve body, a space for accommodating the turbine is formed between the valve cover and the rear end of the valve body, one side of the valve cover, which faces the valve body, is concave inwards, so that the valve core can move to the valve cover by the driving of the turbine without being blocked by the front end of the valve core, the worm is arranged in the space and meshed with the turbine, and the worm is driven by the speed reducing motor;

the speed reducing motor is in signal connection with the controller, the stop of the speed reducing motor is controlled when the valve core completely blocks the cutoff hole or the valve core contacts the valve cover and the controller receives a locked-rotor heavy current generated by the speed reducing motor instantly.

Further, the reaction chamber is an exhaust pipe for tail gas containing nitrogen oxide gas.

Furthermore, a special-shaped hole is formed in one end, back to the speed reduction motor, of the worm, and a through hole opposite to the special-shaped hole is formed in the valve cover.

Preferably, the valve core hole is divided into a valve core hole rear section and a valve core hole front section with successively decreasing diameters from the valve body rear end to the valve body front end, and the sealing assembly comprises: 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, and the gland is fixedly connected with the rear section of the valve core hole through threads.

Furthermore, annular gaskets are arranged between the O-shaped sealing ring and the gland and between the O-shaped sealing ring and the threaded hole.

The electric stop valve is smaller than the friction force between the sealing surfaces of the conventional electric ball valve in the opening and closing process of the valve, and is more durable, easy to manufacture and convenient to maintain.

The invention has reasonable design, simple structure and convenient use, is suitable for various gas cylinders, in particular to a gas cylinder valve which can realize intelligent control on a vehicle gas cylinder.

According to the structural design of the gas cylinder valve for realizing intelligent control, the speed reducing motor is adopted to drive the worm gear to realize that the valve core rotates along the axial direction to enable the cut-off hole between the air inlet hole and the air outlet hole to be closed or opened; the valve can be turned by inserting a special-shaped key into the through hole to twist the worm, and can be manually closed and opened when the speed reducing motor cannot normally work; the valve cover, the annular gasket and the O-shaped sealing ring form a sealing compensation device, a gap is formed between the worn O-shaped sealing ring and the valve core, the gap can be reduced by screwing the pressing cover to extrude the annular gasket, the sealing compensation effect is achieved, the sealing performance of the valve is optimal, the medium in the gas cylinder is prevented from leaking, and the safe and reliable supply of the gas cylinder is realized; 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 case and screw hole threaded connection, gear motor can be stable in the operating mode after driving valve and moving certain distance, and the outage when need not adjusting, the case also can not be exerted the pressure promotion to the case in the inlet port, consequently this valve has replaced the solenoid valve as the conventional control means of governing valve, has avoided because of the problem of frequent switch of solenoid valve and long-time circular telegram scaling. The problem of low reliability of the conventional electromagnetic valve is solved.

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.

When the speed reducing motor normally rotates, the rotating magnetic field generated by the stator drives the rotor to rotate along the rotating direction of the magnetic field, so that in the rotating process of the rotor, a magnetic induction line is cut to generate induction current, the magnetic field generated by the induction current rotates along with the rotor, and reverse induction current is also generated in the stator, so that the current of a stator winding is inhibited, if the valve core is opened (in contact with a valve cover) or closed tightly (in blocking an intercepting hole), the speed reducing motor stops rotating, the speed reducing motor blocks rotation, the reverse induction current cannot be generated in the stator, namely, the voltage acting on a winding coil is greatly increased and is input voltage, so that the current in the winding is greatly increased, when the speed reducing motor is in signal connection with the controller, the controller can judge that the valve core is in a completely opened or completely closed state according to the induction current fed back by the speed reducing motor, and can realize, and a monitoring sensor for the stroke of the valve core is not required to be installed.

The sealing structure has an explosion-proof function, and compared with the common electrically operated valve which is contacted with flammable and explosive media, the sealing structure has the explosion risk.

Drawings

FIG. 1 is a perspective view showing the appearance of a gas cylinder valve for realizing intelligent control;

FIG. 2 is a schematic cross-sectional view of a gas cylinder valve for intelligent control;

FIG. 3 is a schematic view of a cross-sectional flow channel structure of a cylinder valve for realizing intelligent control;

FIG. 4 is a schematic diagram of the multi-channel outlet distribution of the cylinder valve for realizing intelligent control;

FIG. 5 is a schematic view of a worm and gear connection of a cylinder valve for intelligent control;

wherein: 1-valve body, 2-valve core, 20-air inlet hole, 21-cutoff hole, 22-valve cavity hole, 23-threaded 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, 71-key, 72-groove, 8-worm, 81-special-shaped hole, 9-valve cover, 10-speed reduction motor, 11-front end of valve body, 12-rear end of valve body, 100-explosion-proof sheath.

Detailed Description

The invention is described in further detail below with reference to the figures and specific examples, which should not be construed as limiting the invention.

Example 1:

referring to fig. 1, a cylinder valve for realizing intelligent control includes: the explosion-proof valve comprises a valve body 1 and a valve cover 9, wherein a motor 10 is arranged on the valve cover 9, an explosion-proof sheath 100 is sleeved outside the motor 10, as shown in a figure 2-figure 3, an air inlet hole 20, a flow 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 flow 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;

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 block the intercepting hole 21, the front end of the valve core 2 is provided with a valve rod 26 which is in clearance fit with the valve cavity hole 22, a sealing component 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 rear end of the valve core 2 is exposed out of the rear end of the valve body 1 and is sleeved with the turbine 7, the threaded hole 23 is in threaded connection with the valve core 2, as shown in figure 5, the turbine 7 is in sliding connection with the rear end of the valve core 1 through a key 71 and a groove 72, the key 71 and the groove 72 are parallel to the longitudinal direction of the valve core 2 and are uniformly arranged along the inner circumference of the turbine 7 and the outer circumference of the valve core 2, the length of the key and the groove at the rear end of the valve core 1 is, the telescopic motion can be carried out along the axial direction of the threaded hole 23; in this embodiment, the key and groove schemes on the inner periphery of the turbine and the outer periphery of the valve core are not the only options, as long as the inner periphery of the turbine is ensured to be provided with the combination part which is parallel to and embedded into the key and groove on the outer periphery of the valve core, the length of the combination part is less than that of the key and groove, and the key and groove arranged at the rear end of the valve core are parallel to the longitudinal direction of the valve core and are uniformly arranged along the outer periphery of the valve core.

The valve cover 9 is arranged at the rear end of the valve body 1, a space for accommodating the turbine 7 is formed between the valve cover 9 and the rear end of the valve body 1, one side of the valve cover 9, which faces the valve body 1, is concave inwards, so that the valve core 2 can move towards the valve cover 9 under the driving of the turbine 7, the worm 8 is arranged in the space and meshed with the turbine 7, and the worm 8 is driven by the speed reducing motor 10.

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.

As shown in fig. 2, a special-shaped hole 81 is formed at one end of the worm 8 facing away from the speed reduction motor 10, and a through hole 6 facing the special-shaped hole 81 is formed on the valve cover 9. 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 on 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 on the rear section 27 of the valve core hole, the gland 4 is fixedly connected with the rear section 27 of the valve core hole through threads, and annular gaskets 31 are arranged 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 speed reducing motor 10 is in signal connection with the controller, when the valve core 2 completely blocks the intercepting hole 21 or the valve core 2 contacts the valve cover 9, the controller controls the speed reducing motor to stop rotating when receiving the rotation blocking large current instantly generated by the speed reducing motor.

When the gas cylinder is applied as a valve on a vehicle, the valve controller is in signal connection with an electric control unit ECU of a motor vehicle, automatic and remote control can be realized in a cab of the motor vehicle, the gas cylinder can be closed, the valve and the gas cylinder share an independent power supply, and the gas cylinder can normally work even if the vehicle has no power supply in failure, so that the safety and the reliability of the gas cylinder are ensured.

According to fig. 3, 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 fig. 4, the valve body air outlet 25 adopts multi-channel supply, so that supply can be realized by the valve when a plurality of units are required to be supplied, the valve does not need to be additionally provided with valves or refit and splice an outer pipeline, splicing of the perforated pipelines of the gas cylinder is reduced, and the whole safety and reliability of the gas cylinder are improved.

As can be seen from fig. 2, the electric valve cannot be used normally when the reduction motor 10 is damaged or the electric control cannot be realized in some other extreme cases, and the valve can be manually opened and closed by inserting a special tool into the special-shaped hole 81.

When the loading medium of the gas cylinder is flammable and explosive, the explosion-proof sheath 100 can isolate the flammable and explosive medium from the contact of the electric speed reducing motor 10 to avoid the risk of gas explosion caused by the sparks of the speed reducing motor.

The above-mentioned implementation methods of the present invention are not intended to limit the scope of the present invention, and all equivalent structures or equivalent flow transformations made by the present specification and the attached drawings, or directly or indirectly applied to the related technical fields, are included in the scope of the present invention. Details not described in the present specification belong to the prior art known to those skilled in the art.