CN209743602U - Low-flow-resistance multifunctional liquid methane bacterium type valve - Google Patents

Low-flow-resistance multifunctional liquid methane bacterium type valve Download PDF

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Publication number
CN209743602U
CN209743602U CN201920055371.8U CN201920055371U CN209743602U CN 209743602 U CN209743602 U CN 209743602U CN 201920055371 U CN201920055371 U CN 201920055371U CN 209743602 U CN209743602 U CN 209743602U
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valve
cavity
push rod
cover
valve cover
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CN201920055371.8U
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翟启超
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Beijing Interstellar Glory Space Technology Co Ltd
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Beijing Interstellar Glory Space Technology Co Ltd
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Abstract

The utility model relates to a valve field especially relates to a multi-functional liquid methane fungus type valve of low flow resistance. The valve comprises a valve body with a circulation channel, wherein an upper valve cover and a lower valve cover are arranged at the upper end and the lower end of the valve body respectively, a guide sleeve is arranged in a first cavity, one end of the guide sleeve is connected with a valve clack, the other end of the guide sleeve is connected with a telescopic push rod, a return spring is arranged between the telescopic push rod and the upper valve cover, the telescopic push rod is sealed to the first cavity by arranging a first bellows sealing assembly, a second bellows sealing assembly is arranged in a second cavity and is connected with one end of an ejector rod, and the other end of the ejector rod is abutted to the valve clack and has the function. The utility model discloses first bellows subassembly inner chamber sets up the spring, provides valve sealing force under the no control gas condition, guarantees the sealing performance of valve to can help the bellows make the valve head remain stable at the assembled state. Meanwhile, the valve clack is provided with a longer guide surface, so that the stability of the corrugated pipe and the movement flexibility of the valve are ensured.

Description

Low-flow-resistance multifunctional liquid methane bacterium type valve
Technical Field
The utility model relates to a valve field especially relates to a multi-functional liquid methane fungus type valve of low flow resistance.
Background
A large number of valves are generally applied to pipelines of a low-temperature liquid oxymethane engine system to control pipeline media. The mushroom-type valve is a common valve, has the inherent characteristics of high pressure bearing capacity, strong working temperature adaptability, high response speed, good sealing performance, long service life and the like, and mainly plays a role in pipeline medium interruption. The valve clack of the mushroom-shaped valve is generally in a mushroom-umbrella shape and is matched with the valve seat to realize sealing. When the valve is opened, the valve clack is lifted away from the valve seat to form an annular circulation channel, so that the medium circulation function is realized. The mushroom-type valve is generally controlled to open or close by an actuating mechanism such as a spring, a pneumatic control chamber, etc.
The valve belongs to a pipeline control element, and the flow resistance of the valve is one of important indexes for measuring the medium circulation capacity of the valve. Due to the structure, the medium inside the bacterial valve needs to be turned over in the flowing direction, so that large flowing resistance is generally generated, and the flow resistance coefficient zeta of the medium is generally 2-7. The higher flow resistance can cause the reduction of the flow efficiency of the engine medium and influence the working efficiency of the whole machine, so the flow capacity is the key point and the difficulty of the design of the bacteria valve.
The conventional bacteria valve only has opening and closing functions in the pipeline. In the working sequence process of the whole engine, the bacterial valve is required to realize additional functions such as uncontrolled sealing, grading or slow opening, automatic maintenance and full opening and the like. The fungus valve of single structure is difficult to realize multi-functional stack, leads to the pipeline to establish ties or parallelly connected many valves of different functions, has increased system architecture complexity, has reduced complete machine control reliability.
Disclosure of Invention
In order to solve the problem, the utility model provides a low flow resistance realizes the fungus type valve of many additional functions to solve limitation such as the high flow resistance function singleness that typical fungus type valve often appears.
The utility model discloses a technical scheme who takes for realizing above-mentioned purpose does:
The utility model provides a multi-functional liquid methane fungus type valve of low flow resistance, this valve is including the valve body that has the circulation passageway, the last setting of circulation passageway has the valve clack of opening and closing, the lower extreme sets up valve gap and lower valve gap respectively on the valve body, first cavity has between upper valve gap and the valve body, the guide pin bushing that can move about from top to bottom is set up in the first cavity, the one end and the valve clack of guide pin bushing be connected, the other end links to each other with telescopic push rod, telescopic push rod and upper valve cap between set up return spring, telescopic push rod on seal it to in first cavity through setting up first bellows seal assembly, the second cavity has between lower valve gap and the valve body, and set up second bellows seal assembly in the second cavity and link to each other with ejector pin one end, the ejector pin other end offsets with the valve clack, has the function of opening the valve clack.
As a further improvement, the upper valve cover is communicated with an inner cavity of the first corrugated pipe sealing assembly through an open cavity air control opening, and the lower valve cover is communicated with an inner cavity of the second corrugated pipe sealing assembly through a closed cavity air control opening.
As a further improvement, the stroke of the first bellows seal assembly is larger than that of the second bellows seal assembly, and the valve clack half-opening position in the opening process is controlled through stroke difference, so that the function of staged and staged opening of the valve is realized.
As a further improvement, the guide sleeve is of a U-shaped structure.
As a further improvement, the upper valve cover and the lower valve cover are fixed on the valve body through self-locking nuts.
As a further improvement, gaskets are arranged between the upper valve cover and the lower valve cover and the valve body.
The utility model discloses first bellows subassembly inner chamber sets up the spring, provides valve sealing force under the no control gas condition, guarantees the sealing performance of valve to can help the bellows make the valve head remain stable at the assembled state. Meanwhile, the valve clack is provided with a longer guide surface, so that the stability of the corrugated pipe and the movement flexibility of the valve are ensured.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following describes in detail an embodiment of the present invention with reference to the drawings.
As shown in figure 1, the low flow resistance multifunctional liquid methane bacteria type valve comprises a valve body 1 with a flow passage, wherein a valve clack 2 which can be opened and closed is arranged on the flow passage, an upper valve cover 6 and a lower valve cover 11 are respectively arranged at the upper end and the lower end of the valve body 1, a first cavity is arranged between the upper valve cover 6 and the valve body 1, a U-shaped guide sleeve 3 which can move up and down is arranged in the first cavity, one end of the guide sleeve 3 is connected with the valve clack 2, the other end of the guide sleeve is connected with a telescopic push rod 4, a return spring 5 is arranged between the telescopic push rod 4 and the upper valve cover 6, the telescopic push rod 4 is sealed in the first cavity by arranging a first bellows sealing component 9, a second cavity is arranged between the lower valve cover 11 and the valve body 1, and a second bellows sealing component 7 is arranged in the second cavity and is connected with one end of a push rod 8, the other end of the ejector rod 8 is abutted against the valve clack 2 and has the function of opening the valve clack; the upper valve cover 6 is communicated with an inner cavity of the first corrugated pipe sealing assembly 9 through an open cavity air control opening, and the lower valve cover is communicated with an inner cavity of the second corrugated pipe sealing assembly 7 through a closed cavity air control opening. The stroke of the first bellows seal assembly 9 is larger than that of the second bellows seal assembly 7, and the valve clack half-opening position in the opening process is controlled through stroke difference, so that the valve is opened in stages.
the upper valve cover 6 and the lower valve cover 11 are fixed on the valve body through arranging a self-locking nut 13; gaskets 10 are arranged between the upper valve cover 6 and the lower valve cover 11 and the valve body 1.
When no control gas is introduced, the valve realizes low-pressure sealing only by the spring 5. When the cavity opening air control port C is communicated with control air, the second bellows seal component 7 stretches, the push rod 8 is driven to push the valve clack 2, the upper spring 5 of the valve clack and the first bellows seal component 4 to generate small displacement, and the valve is half opened. As the pressure of the inlet medium increases, the valve clack is fully opened under the action of the medium force. After the valve is opened, the structure can be kept in an open state under the condition of no control gas. When closing chamber gas control mouth D and leading to the control gas, first bellows seal assembly 4 and spring 5 kick-back, drive valve clack 2 return through guide pin bushing 3 simultaneously, and the valve is closed.
The spring is arranged in the inner cavity of the first bellows sealing component 4, sealing force is provided for the valve under the condition of no control gas, the sealing performance of the valve is ensured, and the bellows can be helped to keep the valve head stable in an assembling state. Meanwhile, the valve clack is provided with a longer guide surface, so that the stability of the corrugated pipe and the movement flexibility of the valve are ensured.
Any section area of a runner cavity in the valve is larger than the inlet and the outlet of the valve, and the equivalent diameter of the section of the main flow area is about 1.2 times of the inlet drift diameter. The opening height of the valve is larger than 0.25 times of the diameter of the flow passage, so that the valve clack is ensured not to generate interception. The relative position of the inlet and the outlet of the valve, the design of the ejector rod flow guiding structure and the like form a natural corner of a main flow direction, the fluid is guided to form an optimal flow angle of 135 degrees, and excessive eddy current loss generated by the turning of the wall surface of the fluid is reduced. Based on the design method, the flow resistance of the medium in the whole valve is very small, so that the low-pressure-difference large-flow parameter performance of the valve is realized.
The embodiments of the present invention have been described with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, which are only illustrative and not restrictive, and those skilled in the art can make many forms without departing from the spirit and scope of the present invention, which is protected by the following claims.

Claims (6)

1. The utility model provides a low flow resistance multi-functional liquid methane fungus type valve, this valve is including the valve body that has the circulation passageway, the last setting of circulation passageway has the valve clack of opening and closing, its characterized in that: the valve comprises a valve body, and is characterized in that an upper valve cover and a lower valve cover are arranged at the upper end and the lower end of the valve body respectively, a first cavity is arranged between the upper valve cover and the valve body, a guide sleeve capable of moving up and down is arranged in the first cavity, one end of the guide sleeve is connected with a valve clack, the other end of the guide sleeve is connected with a telescopic push rod, a return spring is arranged between the telescopic push rod and the upper valve cover, the telescopic push rod is sealed in the first cavity by arranging a first corrugated pipe sealing assembly, a second cavity is arranged between the lower valve cover and the valve body, a second corrugated pipe sealing assembly is arranged in the second cavity and is connected with one end of a push rod, and the other end of the push rod is.
2. The low flow resistance multifunctional liquid methane-bacteria type valve according to claim 1, wherein: the upper valve cover is communicated with an inner cavity of the first corrugated pipe sealing assembly through an open cavity air control opening, and the lower valve cover is communicated with an inner cavity of the second corrugated pipe sealing assembly through a closed cavity air control opening.
3. The low flow resistance multifunctional liquid methane-bacteria type valve according to claim 1, wherein: the stroke of the first bellows seal assembly is larger than that of the second bellows seal assembly, and the valve clack half-opening position in the opening process is controlled through stroke difference, so that the valve is opened in stages.
4. The low flow resistance multifunctional liquid methane-bacteria type valve according to claim 1, wherein: the guide sleeve is of a U-shaped structure.
5. The low flow resistance multifunctional liquid methane-bacteria type valve according to claim 1, wherein: the upper valve cover and the lower valve cover are fixed on the valve body through self-locking nuts.
6. The low flow resistance multifunctional liquid methane-bacteria type valve according to claim 1, wherein: and gaskets are arranged between the upper valve cover and the valve body, and between the lower valve cover and the valve body.
CN201920055371.8U 2019-01-14 2019-01-14 Low-flow-resistance multifunctional liquid methane bacterium type valve Active CN209743602U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201920055371.8U CN209743602U (en) 2019-01-14 2019-01-14 Low-flow-resistance multifunctional liquid methane bacterium type valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201920055371.8U CN209743602U (en) 2019-01-14 2019-01-14 Low-flow-resistance multifunctional liquid methane bacterium type valve

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CN209743602U true CN209743602U (en) 2019-12-06

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611564A (en) * 2019-01-14 2019-04-12 北京星际荣耀空间科技有限公司 A kind of low flow resistance full-service fluid methane bacterial type valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109611564A (en) * 2019-01-14 2019-04-12 北京星际荣耀空间科技有限公司 A kind of low flow resistance full-service fluid methane bacterial type valve

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