CN220816583U

CN220816583U - Valve clack structure of hydrogen stop valve

Info

Publication number: CN220816583U
Application number: CN202322536153.5U
Authority: CN
Inventors: 相华虎; 姜沙
Original assignee: Nanjing Putuoke Valve Industry Co ltd
Current assignee: Nanjing Putuoke Valve Industry Co ltd
Priority date: 2023-09-18
Filing date: 2023-09-18
Publication date: 2024-04-19
Anticipated expiration: 2033-09-18

Abstract

The utility model discloses a valve clack structure of a hydrogen stop valve, which comprises: the stop valve unit comprises a valve body and flanges which are respectively and fixedly connected to two ends of the valve body, wherein the upper side wall of the valve body is fixedly connected with a valve cover, the upper side wall of the valve cover is fixedly connected with a bracket, and the valve cover is also provided with a sealing assembly; the clamping unit comprises a valve rod and a valve clack fixedly connected to the lower end of the valve rod, a guide rod is connected to the valve rod in a sliding mode, a plurality of groups of hinge pieces which are uniformly distributed are hinged to the lower end of the guide rod, clamping blocks are hinged to the other ends of the hinge pieces, a valve seat matched with the valve clack is fixedly connected to the valve body, clamping grooves matched with the plurality of groups of clamping blocks are formed in the inner wall of the valve seat, and the valve seat is in threaded connection with the upper end of the guide rod. According to the utility model, the clamping block which can extend out in a sliding way is arranged in the valve clack, so that the clamping block is embedded into the clamping groove on the valve seat to limit the valve clack, the valve clack is prevented from loosening, and the stability and the sealing performance of the valve clack are improved.

Description

Valve clack structure of hydrogen stop valve

Technical Field

The utility model relates to the technical field of stop valves, in particular to a valve clack structure of a hydrogen stop valve.

Background

The stop valve is also called a stop valve, is one of the most widely used valves, is popular because the friction force between sealing surfaces in the opening and closing process is small, the stop valve is durable, the opening height is small, the stop valve is easy to manufacture and convenient to maintain, is not only suitable for medium and low pressure, but also suitable for high pressure, and the closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of the valve seat by means of the pressure of a valve lever to prevent medium circulation, the stop valve is suitable for various fluid types such as liquid, gas, steam and the like, can control the flow rate and the direction of the liquid, the gas and the steam and ensure the normal operation of pipelines, and is suitable for conveying pipelines of various mediums including tap water, chemical fluid, petrochemical industry, public utilities and other pipeline systems.

When the stop valve works, the valve clack inside the valve needs to continuously bear the impact of a medium, and in the long term, looseness can occur between the valve clack and the valve seat of the stop valve, the sealing performance can be reduced, after the stop valve on the market is closed, when the stop valve is not checked and debugged for a long time, the valve clack of the stop valve continuously receives the impact of the medium, the valve clack is easy to loosen, and the sealing performance of the valve clack can be reduced.

Disclosure of utility model

This section is intended to outline some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the utility model and in the title of the utility model, which may not be used to limit the scope of the utility model.

The present utility model has been made in view of the above-described problems with the conventional valve clack structure of a hydrogen shut-off valve.

Therefore, the utility model aims to provide a valve clack structure of a hydrogen stop valve, which is suitable for solving the problems that after the stop valve in the market is closed, when the stop valve is not checked and debugged for a long time, the valve clack of the stop valve is continuously subjected to medium impulsive force, the valve clack is easy to loose, and the sealing performance of the valve clack is reduced.

In order to solve the technical problems, the utility model provides the following technical scheme: a valve flap structure of a hydrogen shut-off valve, comprising:

the stop valve unit comprises a valve body and flanges which are respectively and fixedly connected to two ends of the valve body, wherein the upper side wall of the valve body is fixedly connected with a valve cover, the upper side wall of the valve cover is fixedly connected with a bracket, and the valve cover is also provided with a sealing assembly;

The clamping unit comprises a valve rod and a valve clack fixedly connected to the lower end of the valve rod, the valve rod penetrates through a valve cover and is rotationally connected with the valve cover, the upper end of the valve rod penetrates through a support and is in threaded connection with the support, a guide rod is connected in a sliding mode, multiple groups of hinge pieces are evenly distributed at the lower end of the guide rod, each hinge piece is hinged to a clamping block at the other end of the hinge piece, a conical space suitable for the hinge piece to move is formed in the valve clack, multiple groups of openings matched with the clamping blocks are formed in the side wall of the valve clack, a valve seat matched with the valve clack is fixedly connected to the valve body, clamping grooves matched with the multiple groups of clamping blocks are formed in the inner wall of the valve seat, a rotary drum is rotationally connected to the upper end of the valve rod, and the upper end of the guide rod is in threaded connection with a hand wheel below the rotary drum.

As a preferable mode of the valve clack structure of the hydrogen stop valve of the utility model, wherein: the sealing assembly comprises a gland sleeved on the valve rod in a sliding manner, a packing groove matched with the gland is formed in the upper side wall of the valve cover, flexible graphite is filled in the packing groove, a plurality of groups of bolts are fixedly connected to the upper side wall of the valve cover, and the gland is fixedly connected with the valve cover through the plurality of groups of bolts.

As a preferable mode of the valve clack structure of the hydrogen stop valve of the utility model, wherein: the lower side wall of the valve clack is fixedly connected with a rubber plug, and the side wall of the rubber plug is corrugated.

As a preferable mode of the valve clack structure of the hydrogen stop valve of the utility model, wherein: a gasket is arranged between the valve body and the valve cover, and a fixed block is fixedly connected to the outer side wall of the valve body.

As a preferable mode of the valve clack structure of the hydrogen stop valve of the utility model, wherein: the valve body is internally provided with a corrugated pipe, one end of the corrugated pipe is fixedly connected with the lower side wall of the valve cover, and the other end of the corrugated pipe is fixedly connected with the upper side wall of the valve clack.

As a preferable mode of the valve clack structure of the hydrogen stop valve of the utility model, wherein: the valve clack is multilayer round platform structure, the valve clack lower floor is little, the upper strata is big to the valve clack lower floor sets up to toper round platform form.

The utility model has the beneficial effects that: the valve rod is rotated through rotating the hand wheel, the valve rod is rotated and descends to enable the valve clack to be tightly attached to the valve seat, hydrogen in the stop valve is blocked, flexible graphite is filled in the packing groove to prevent medium inside the valve body from leaking along the valve rod, the corrugated pipe is arranged in the valve body to prevent the hydrogen from eroding the valve rod for a long time, the strength of the valve rod is reduced, the rotary drum at the upper end of the valve rod is rotated to prevent the valve clack from loosening after long-time use, the guide rod descends, the guide rod drives the clamping block to slide in the valve clack through the hinging piece to stretch out, the clamping block is embedded into the clamping groove on the valve seat, at the moment, the valve clack is limited to be unable to move up and down in the valve seat, the valve clack is arranged into a multi-layer structure, and the lower side wall of the valve clack is fixedly connected with the rubber plug, so that the tightness of the valve clack is further increased, the valve clack is enabled to be firmer, the valve clack in the stop valve is not easy to loose, and the tightness of the stop valve is enabled to be better.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:

FIG. 1 is a schematic diagram of the overall structure of a valve clack structure of a hydrogen stop valve according to the present utility model;

FIG. 2 is a schematic diagram of the overall cross-sectional structure of a valve clack structure of a hydrogen shut-off valve according to the present utility model;

Fig. 3 is a schematic diagram of a partial enlarged view of a clamping unit of a valve clack structure of a hydrogen stop valve according to the present utility model;

Fig. 4 is a schematic diagram of an overall perspective cross-sectional structure of a valve clack structure of a hydrogen stop valve according to the present utility model.

Description of the drawings: 100 stop valve units, 101 valve bodies, 102 flanges, 103 valve covers, 104 supports, 105 handwheels, 106 fixing blocks, 107a sealing assemblies, 1071 packing grooves, 1072 gland covers, 1073 bolts, 108 gaskets, 200 clamping units, 201 valve rods, 202 valve clacks, 203 guide rods, 204 hinge parts, 205 clamping blocks, 206 rotary drums, 207 rubber plugs, 208 corrugated pipes and 209 valve seats.

Detailed Description

In order that the above-recited objects, features and advantages of the present utility model will become more readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

Further, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Further, in describing the embodiments of the present utility model in detail, the cross-sectional view of the device structure will be partially enlarged from a general scale for convenience of description, and the schematic drawings are only illustrative and should not limit the scope of the present utility model. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.

Examples

Referring to fig. 1 to 4, for one embodiment of the present utility model, there is provided a valve flap structure of a hydrogen shut-off valve, including a shut-off valve unit 100 and a chucking unit 200.

The stop valve unit 100 comprises a valve body 101 and flanges 102 fixedly connected to two ends of the valve body 101 respectively, a valve cover 103 is fixedly connected to the upper side wall of the valve body 101, a bracket 104 is fixedly connected to the upper side wall of the valve cover 103, and a sealing assembly 107a is further arranged on the valve cover 103;

The clamping unit 200 comprises a valve rod 201 and a valve clack 202 fixedly connected to the lower end of the valve rod 201, the valve rod 201 penetrates through a valve cover 103 and is in rotary connection with the valve cover 103, the upper end of the valve rod 201 penetrates through a bracket 104 and is in threaded connection with the bracket 104, a guide rod 203 is connected in a sliding manner in the valve rod 201, a plurality of groups of hinge pieces 204 are evenly distributed at the lower end of the guide rod 203, clamping blocks 205 are hinged to the other end of each hinge piece 204, a conical space suitable for the movement of the hinge pieces 204 is formed in the valve clack 202, a plurality of groups of openings matched with the clamping blocks 205 are formed in the side wall of the valve clack 202, a valve seat 209 matched with the valve clack 202 is fixedly connected in the valve body 101, clamping grooves matched with the plurality of clamping blocks 205 are formed in the inner wall of the valve seat 209, a rotary drum 206 is in rotary connection with the upper end of the guide rod 201, a hand wheel 105 is fixedly connected to the upper end of the rotary drum 206 and is in threaded connection with the upper end of the guide rod 203, the lower end of the valve rod 201 is fixedly connected with a hand wheel 105 through the rotary hand wheel 105, the rotation of the hand wheel 202 is used for driving the valve clack 202 at the lower end of the valve rod 201 to be tightly attached to the matched valve seat 209, the guide rod 203 is driven to extend downwards through the rotary hand rod 203, and the guide rod 203 is driven to extend downwards, when the hinge piece 203 moves downwards, and is downwards in the direction, and is;

The sealing assembly 107a comprises a gland 1072 which is sleeved on the valve rod 201 in a sliding manner, a packing groove 1071 matched with the gland 1072 is formed in the upper side wall of the valve cover 103, flexible graphite is filled in the packing groove 1071, a plurality of groups of bolts 1073 are fixedly connected to the upper side wall of the valve cover 103, the gland 1072 is fixedly connected with the valve cover 103 through the plurality of groups of bolts 1073, the flexible graphite is filled in the packing groove 1071, medium in the valve body 101 is prevented from leaking along the valve rod 201, the flexible graphite packing is widely applied to the valve, and the valve has the advantages of unique flexibility, rebound resilience, good temperature resistance, strong corrosion resistance, low friction coefficient, good self-wetting property, excellent impermeability to gas and liquid and the like, and long service life and can be repeatedly used;

The rubber plug 207 is fixedly connected to the lower side wall of the valve clack 202, the side wall of the rubber plug 207 is corrugated, and the strength of the metal material is reduced and embrittled due to certain corrosiveness of hydrogen at high temperature and high pressure, so that the rubber plug 207 is arranged below the valve clack 202, the tightness of the valve clack 202 is improved, the hydrogen is prevented from directly contacting the valve clack 202 to corrode the valve clack 202, the gasket 108 is arranged between the valve body 101 and the valve cover 103, the fixing block 106 is fixedly connected to the outer side wall of the valve body 101, the tightness between the valve body 101 and the valve cover 103 is improved, the hydrogen leakage is prevented, the fixed block 106 is used for reinforcing two ends of the valve body 101 and improving the strength of the valve body 101, the valve body 101 is internally provided with the corrugated pipe 208, one end of the corrugated pipe 208 is fixedly connected to the lower side wall of the valve cover 103, the other end of the corrugated pipe 208 is fixedly connected to the upper side wall of the valve clack 202, and the valve rod 201 is prevented from being corroded by hydrogen for a long time, so that the strength of the valve rod 201 is reduced, the valve clack 202 is of a multi-layer round table structure, the lower layer of the valve clack 202 is small, the upper layer of the valve clack 202 is large, and the lowest layer of the valve clack 202 is of a conical round table shape;

in the use, make valve rod 201 rotate through rotating hand wheel 105, valve rod 201 rotates and descends and makes valve clack 202 closely laminate disk seat 209, the shutoff is lived hydrogen in the stop valve, in order to prevent that valve clack 202 from appearing not hard up after long-time use, through rotating rotary drum 206 of valve rod 201 upper end, make guide arm 203 descend, guide arm 203 drives fixture block 205 through articulated elements 204 and stretches out in the slip of valve clack 202, make fixture block 205 imbed in the draw-in groove on disk seat 209, at this moment valve clack 202 just is restricted and can't reciprocate in disk seat 209, through setting up valve clack 202 into multilayer structure, and valve clack 202 lower lateral wall still fixedly connected with rubber stopper 207, further increase the leakproofness of valve clack 202, make it more firm, be difficult for appearing not hard up in valve clack 202 in the stop valve, make the leakproofness of stop valve better.

It should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present utility model may be modified or substituted without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered in the scope of the claims of the present utility model.

Claims

1. A valve flap structure of a hydrogen shut-off valve, comprising:

The stop valve unit (100) comprises a valve body (101) and flanges (102) fixedly connected to two ends of the valve body (101), wherein a valve cover (103) is fixedly connected to the upper side wall of the valve body (101), a bracket (104) is fixedly connected to the upper side wall of the valve cover (103), and a sealing assembly (107 a) is further arranged on the valve cover (103);

The clamping unit (200) comprises a valve rod (201) and a valve clack (202) fixedly connected to the lower end of the valve rod (201), wherein the valve rod (201) penetrates through a valve cover (103) to be connected with the valve cover (103) in a rotating mode, the upper end of the valve rod (201) penetrates through a support (104) to be connected with the support (104) in a threaded mode, a guide rod (203) is connected in a sliding mode in the valve rod (201), a plurality of groups of hinge pieces (204) are hinged to the lower end of the guide rod (203), clamping blocks (205) are hinged to the other end of each hinge piece (204), conical spaces suitable for the movement of the hinge pieces (204) are formed in the valve clack (202), a plurality of groups of openings matched with the clamping blocks (205) are formed in the side wall of the valve body (101), clamping grooves matched with the valve clack (209) are formed in the inner wall of the valve body (101), a rotating drum (206) is connected to the upper end of the valve rod (201), the rotating drum (206) is connected with the upper end of the guide rod (203) in a threaded mode, and the upper end of the guide rod (201) is fixedly connected with a hand wheel (105).

2. The valve clack structure of a hydrogen shut-off valve according to claim 1, wherein: seal assembly (107 a) are established gland (1072) on valve rod (201) including the slip cap, packing groove (1071) that matches with gland (1072) are seted up to lateral wall on valve gap (103), packing groove (1071) intussuseption is filled with flexible graphite, lateral wall fixedly connected with multiunit bolt (1073) on valve gap (103), through multiunit bolt (1073) fixed connection between gland (1072) and valve gap (103).

3. The valve clack structure of a hydrogen shut-off valve according to claim 1, wherein: the lower side wall of the valve clack (202) is fixedly connected with a rubber plug (207), and the side wall of the rubber plug (207) is corrugated.

4. The valve clack structure of a hydrogen shut-off valve according to claim 1, wherein: a gasket (108) is arranged between the valve body (101) and the valve cover (103), and a fixed block (106) is fixedly connected to the outer side wall of the valve body (101).

5. The valve clack structure of a hydrogen shut-off valve according to claim 1, wherein: the valve is characterized in that a corrugated pipe (208) is arranged in the valve body (101), one end of the corrugated pipe (208) is fixedly connected to the lower side wall of the valve cover (103), and the other end of the corrugated pipe (208) is fixedly connected to the upper side wall of the valve clack (202).

6. The valve clack structure of a hydrogen shut-off valve according to claim 1, wherein: the valve clack (202) is of a multi-layer truncated cone structure, the lower layer of the valve clack (202) is small, the upper layer of the valve clack is large, and the lowest layer of the valve clack (202) is in a conical truncated cone shape.