Excess flow valve for high-pressure hydrogen
A high-pressure hydrogen, used technology, applied in the direction of lifting valves, valve devices, safety valves, etc., can solve the problems of low sealing performance of over-current valves, poor flow limiting effect, etc., and achieve the effect of enhancing cooperation and ensuring sealing
Pending Publication Date: 2019-10-22
张家港富瑞阀门有限公司
View PDF0 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0004] One of the purposes of the present invention is to provide an overcurrent valve for high-pressure hydrogen to solve the technical problems of low sealing and poor current limiting effect of the overcurrent valve in the prior art
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0041] In order to clearly and completely describe the purpose, technical solution, and advantages of the present invention, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the present invention, rather than all embodiments, and are only used to explain the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. All other embodiments obtained under the premise of creative work all belong to the protection scope of the present invention.
[0042] In the description of the present invention, it should be noted that the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom" ", "side", "vertical", "horizontal" and other indicated orientations or positional relationships are based on the orientations or positio...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an excess flow valve for high-pressure hydrogen. The excess flow valve comprises a valve body, a sealing part, a flow limiting part and an elastic piece, wherein the valve bodyis of a sealed hollow structure, and the lower opening of the valve body communicates with a medium source; the lower opening of the sealing part communicates with the upper opening of the valve body, and the outer side wall of the lower end of the sealing part is abutted with the inner side wall of the upper end of the valve body in a sealing mode; the outer side wall of the upper end of the flow limiting part is tightly abutted with the inner side wall of the lower end of the sealing part; and the lower end surface of the elastic piece is located in the flow limiting part, and the upper endsurface of the elastic piece is abutted with the sealing part. According to the excess flow valve, the sealing part is abutted with the valve body to seal, the elastic piece is used for monitoring the medium flow and quickly responds to the change of the medium flow, and the sealing degree of the flow limiting part and the sealing part is controlled according to the amount of compression of the elastic piece so as to control the medium flow and limit the medium flow.
Description
technical field [0001] The invention relates to the field of hydrogen safety, in particular to an overflow valve for high-pressure hydrogen. Background technique [0002] The overflow valve is a protective device. Under normal working conditions, when the flow in the pipeline passes through the specified range, the valve is opened, and the medium can pass through the overflow valve; The flow valve will automatically close the flow limit to prevent the loss of a large amount of medium. [0003] Hydrogen is a flammable and explosive gas, and it is very easy to explode when it leaks. However, the pressure difference between high-pressure hydrogen and air is too large, and leakage and diffusion are prone to occur. Therefore, high-pressure hydrogen has extremely strict requirements on sealing. The over-current valve in the prior art has poor sealing performance and cannot meet the sealing requirements of high-pressure hydrogen; when an accident occurs, the over-current valve is...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): F16K17/30F16K1/00F16K1/32F16K1/52
CPCF16K17/30F16K1/00F16K1/32F16K1/52
Inventor 马君王君陆嘉君
Owner 张家港富瑞阀门有限公司