CN210484754U

CN210484754U - Safety valve for gas pipeline

Info

Publication number: CN210484754U
Application number: CN201921374740.6U
Authority: CN
Inventors: 张成祥; 张凯
Original assignee: Xi'an Yoyir Gas Equipment Co ltd
Current assignee: Xi'an Yoyir Gas Equipment Co ltd
Priority date: 2019-08-22
Filing date: 2019-08-22
Publication date: 2020-05-08
Anticipated expiration: 2029-08-22

Abstract

The utility model discloses a gas pipeline safety valve, including valve body, inlet end, the end of giving vent to anger to and set up case and the shutoff head in the valve body, the case is seted up and is conical first passageway and with first passageway through connection's second passageway, first passageway meets with the inlet end, the second passageway meets with the end of giving vent to anger, the shutoff head suits with first passageway, the shutoff head is installed on the valve is opened and is closed the subassembly. The utility model has the advantages of simple structure and reasonable design, the shutoff head all is the toper with the shape of first passageway, the diameter of shutoff head from top to bottom reduces gradually, can carry out the shutoff of tight silk dowel to first passageway, meet the shutoff head when gaseous, the effort is dispersed to all around, the impact wear to the shutoff head of reduction, can prolong the life of shutoff head, the piece is inhaled to first magnetism and the second magnetism adsorbs the adsorption affinity between the piece, can confront gaseous ascending impact force to the shutoff head, make the effect that plays shutoff valve air flue that the shutoff head can stabilize, excellent in use effect.

Description

Safety valve for gas pipeline

Technical Field

The utility model belongs to the technical field of pipeline gas safety device, concretely relates to gas pipeline relief valve.

Background

With the development of social economy and technology and the improvement of the living standard of people, gas becomes an important energy source in daily life; almost every family in the city uses natural gas to cook, heat or boil bath water at present. With the promotion of the agricultural and civil engineering, the rural natural gas is constructed and installed in households. The popularity of natural gas is so high that safe gas utilization is closely related to the healthy life of thousands of households.

The gas valve is a safety protection device which is installed at the tail end of an indoor low-pressure gas pipeline and is connected with a burner through a hose or a metal corrugated pipe, is used for cutting off, connecting and adjusting gas in the pipeline, and has good control characteristic and closing sealing performance. It is suitable for various gas medium pipelines such as city gas, liquefied petroleum, gas, natural gas and oxygen. The driving form is manual, worm gear transmission, electric, pneumatic, hydraulic, electrohydraulic linkage and other executing mechanisms, and long-distance control and automatic operation can be realized.

Old gas pipelines often cause gas leakage due to the damage of sealing devices, the damage of metal corrugated pipes connected with the gas pipelines or the blockage of gas cookers, and the like, and fire accidents can be caused by electric sparks or fire sources when the old gas pipelines encounter friction, so that the old gas pipelines damage families and neighborhood properties, and property loss and even life safety which are difficult to measure are often caused. The important measures for protecting the life and property safety of people are to ensure the safe use of the gas pipeline and prevent gas leakage.

Therefore, a gas valve with reliable plugging is needed, and the dangerous situations of gas poisoning and gas explosion caused by gas leakage are avoided.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the shape to above-mentioned prior art is not enough, a gas pipeline safety valve is provided, a structure is simple, and reasonable design, the shutoff head all is the toper with the shape of first passageway, the diameter of shutoff head reduces from top to bottom gradually, can carry out the shutoff of tight silk dowel to first passageway, meet the shutoff head when gas, the effort is dispersed to all around, the impact wear to the shutoff head of reduction, can prolong the life of shutoff head, the adsorption affinity between first magnetic absorption piece and the second magnetic absorption piece, can confront gaseous ascending impact force to the shutoff head, make the effect of playing the shutoff valve air flue that the shutoff head can stabilize, excellent in use effect.

In order to solve the technical problem, the utility model discloses a technical scheme is: a gas pipeline safety valve which is characterized in that: the valve comprises a valve body, an air inlet end, an air outlet end, a valve core and a blocking head, wherein the valve core and the blocking head are arranged in the valve body, the valve core is provided with a first conical channel and a second channel communicated with the first channel, the first channel is connected with the air inlet end, the second channel is connected with the air outlet end, the blocking head is adapted to the first channel, and the blocking head is arranged on a valve opening and closing assembly.

The safety valve for the gas pipeline is characterized in that: the valve opening and closing assembly comprises a valve core fixing seat arranged in the valve body, a first magnetic suction piece fixedly connected with the valve core fixing seat, a second magnetic suction piece fixedly connected with the blocking head, and a push rod fixedly connected with the second magnetic suction piece, wherein the push rod is connected with the valve handle, a through hole for the blocking head to pass is formed in the first magnetic suction piece, and the first magnetic suction piece and the second magnetic suction piece are connected in a magnetic suction mode.

The safety valve for the gas pipeline is characterized in that: and the top end of the plugging head is provided with a guide post matched with the through hole.

The safety valve for the gas pipeline is characterized in that: the second magnetic attraction piece is provided with a connecting piece, and the plugging head is provided with a connecting hole matched with the connecting piece.

The safety valve for the gas pipeline is characterized in that: the plugging head is conical.

The safety valve for the gas pipeline is characterized in that: the vertical section of the plugging head is in an isosceles trapezoid shape.

The safety valve for the gas pipeline is characterized in that: the plugging head is made of an anti-static material.

Compared with the prior art, the utility model has the following advantage:

1. the utility model has the advantages of simple structure and reasonable design, realize and use convenient operation.

2. The utility model discloses in, the shutoff head all is the toper with the shape of first passageway, and the diameter of shutoff head from top to bottom reduces gradually, and in the shutoff head can get into first passageway downwards, until with the tight looks joint close of first passageway, think promptly that the shutoff head has sealed first passageway completely, the shutoff is effectual.

3. In the utility model, the side wall of the blocking head is streamline, so that the friction force of the blocking head entering the first channel is reduced; meanwhile, when the gas meets the plugging head, the acting force is dispersed to the periphery, the impact abrasion to the plugging head is reduced, and the service life of the plugging head can be prolonged.

4. The utility model discloses in, the valve is opened and is closed the subassembly and inhale the piece including the first magnetism that can the magnetic attraction and inhale with the second magnetism, and the first magnetism is inhaled the piece and is inhaled the adsorption affinity between the piece with the second magnetism, can confront gaseous ascending impact force to the shutoff head for the effect of playing shutoff valve air flue that the shutoff head can stabilize, excellent in use effect.

To sum up, the utility model has the advantages of simple structure and reasonable design, the shutoff head all is the toper with the shape of first passageway, the diameter of shutoff head from top to bottom reduces gradually, can carry out the shutoff of tight silk dowel to first passageway, meet the shutoff head when gaseous, the effort is dispersed to all around, the reduction to the impact wear of shutoff head, can prolong the life of shutoff head, first magnetism is inhaled the adsorption affinity between the piece with the second magnetism, can counter gas to the ascending impact force of shutoff head, make the effect of playing the shutoff valve air flue that the shutoff head can stabilize, excellent in use effect.

The technical solution of the present invention is further described in detail by the accompanying drawings and examples.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the connection relationship between the blocking head, the first magnetic attraction piece, the second magnetic attraction piece and the push rod of the present invention.

Fig. 3 is a schematic structural diagram of the valve element of the present invention.

Fig. 4 is a view taken along direction a of fig. 3.

Fig. 5 is a schematic structural view of the plugging head of the present invention.

Description of reference numerals:

1-an air inlet end; 2-air outlet end; 3-a valve body;

4-valve core fixing seat; 5-connecting the channels; 6, a valve core;

61 — a first channel; 62-a second channel; 7-plugging head;

71-a guide post; 72-connecting hole; 8-a first magnetic attraction member;

9-a second magnetic attraction piece; 10-pushing rod.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and embodiments of the present invention.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

As shown in fig. 1 to 5, the utility model discloses a valve body 3, inlet end 1, the end 2 of giving vent to anger to and the case 6 and the shutoff head 7 of setting in valve body 3, case 6 seted up be conical first passageway 61 and with first passageway 61 through connection's second passageway 62, first passageway 61 meets with inlet end 1, second passageway 62 meets with the end 2 of giving vent to anger, shutoff head 7 suits with the shape of first passageway 61, shutoff head 7 installs on the valve is opened and is closed the subassembly.

In practical use, the first channel 61 and the second channel 62 are arranged perpendicularly, the valve core 6 is cylindrical, the first channel 61 is arranged along the length direction of the valve core 6, and the second channel 62 is arranged along the circumferential direction of the valve core 6.

The sealing head 7 and the first channel 61 are both conical in shape, and the centers of circles of the sealing head 7 and the first channel 61 are located on the same straight line. The blocking cap 7 is used for sealing the space of the first passage 61 so as to prevent gas from entering the valve body 3 through the first passage 61.

The conical sealing head 7 has the advantages that: the diameter of the blocking head 7 is gradually reduced from top to bottom, the blocking head 7 can be pressed downwards into the first channel 61 until the first channel 61 is not pressed, namely the blocking head 3 is considered to completely block the first channel 61, and the blocking effect is good; the side wall of the blocking head 3 is streamline, so that the friction force of the blocking head 7 entering the first channel 61 is reduced; meanwhile, when the gas meets the plugging head 7, the acting force is dispersed to the periphery, the impact abrasion to the plugging head 7 is reduced, and the service life of the plugging head 7 can be prolonged.

During specific implementation, when air needs to be introduced, the valve opening and closing assembly moves upwards to drive the blocking head 7 to move upwards, the blocking head 7 is separated from the first channel 61, and air flows into the air outlet end 2 through the air inlet end 1, the first channel 61 and the second channel 62, so that the valve enters an opening state. When needing to close, the valve is opened and is closed the subassembly downwards, drives shutoff head 7 and moves down, and shutoff head 7 gets into first passageway 61, and shutoff head 7 plays the effect of blocking first passageway 61, and gas can not pass through first passageway 61 to unable inflow end 2 of giving vent to anger, thereby get into the closed condition.

In this embodiment, the valve opening and closing assembly includes a valve element fixing seat 4 arranged in the valve body 3, a first magnetic attraction piece 8 fixedly connected with the valve element fixing seat 4, a second magnetic attraction piece 9 fixedly connected with the blocking head 7, and a push rod 10 fixedly connected with the second magnetic attraction piece 9, the push rod 10 is connected with the valve handle, a through hole for the blocking head 7 to pass is formed in the first magnetic attraction piece 8, and the first magnetic attraction piece 8 and the second magnetic attraction piece 9 are magnetically attracted and connected.

In practical use, the second magnetic member 9 is a magnet, and the first magnetic member 8 is made of metal such as iron, nickel, cobalt, etc. capable of being attracted by the magnet.

The valve core fixing seat 4 and the first magnetic attraction piece 8, the push rod 10 and the second magnetic attraction piece 9 are fixedly connected in a threaded connection mode, a buckling mode or a welding mode and the like. In this embodiment, a plurality of screw holes that are used for connecting first magnetism piece 8 are seted up on the top of case fixing base 4, and the through-hole has been seted up to the corresponding position on first magnetism piece 8, and case fixing base 4 and first magnetism are inhaled piece 8 and are passed through screw fixed connection. The second magnetic attraction piece 9 is fixedly connected with the push rod 10 through threads.

The center of the valve core fixing seat 4 is provided with an accommodating cavity for the valve core 6 to enter, and the side wall of the valve core fixing seat 4 is connected with a connecting channel 5 which runs through the air inlet end 1 and the second channel 62.

During specific implementation, the valve core fixing seat 4 is fixed, and the first magnetic attraction piece 8 is in threaded connection with the valve core fixing seat 4, so that the first magnetic attraction piece 8 is stationary relative to the valve body 3. During the use, because catch bar 10 and second magnetism inhale 9 fixed connection, second magnetism inhale 9 and shutoff head 7 fixed connection, consequently promote catch bar 10 downwards, catch bar 10 drives the second magnetism inhale 9 and shutoff head 7 and inhale the longitudinal direction downstream of the through-hole on 8 along first magnetism, inhale when the second magnetism inhale 9 and first magnetism inhale the distance between 8 and be less than the second and inhale the absorption distance of piece 9, second magnetism inhale 9 promptly and be adsorbed on first magnetism inhale 8 immediately, thereby further drive shutoff head 7 and get into first passageway 61 downwards, thereby realize that the valve air flue closes. The time required by the valve air passage from the opening state to the closing state is the time for delaying closing.

Because the piece is inhaled for magnetism to first magnetism 8 and second magnetism 9 and closes, consequently the piece is inhaled to first magnetism 8 and second magnetism and the adsorption affinity between the piece 9, can confront the ascending impact force of gas to shutoff head 7 for shutoff head 7 can be firm play the effect of shutoff valve air flue.

When the valve air passage is opened, only one force which is larger than the adsorption force of the first magnetic attraction piece 8 and the second magnetic attraction piece 9 and is upward needs to be applied to the push rod 10, the first magnetic attraction piece 8 and the second magnetic attraction piece 9 are separated from the magnetic attraction, and therefore the push rod 10 drives the blocking head 7 to be separated from the first passage 61 upwards, and the valve air passage is opened.

In this embodiment, the top end of the plugging head 7 is provided with a guide post 71 adapted to the through hole.

During practical use, the plugging head 7 is conical, and the vertical section of the plugging head 7 is isosceles trapezoid. The two ends of the plugging head 7 are respectively a large-diameter end and a small-diameter end, and the diameter of the large-diameter end is larger than that of the small-diameter end. The guide column 71 is cylindrical, the diameter of the guide column 71 is smaller than that of the large-diameter end, and the guide column 71 is fixedly connected with the large-diameter end of the plugging head 7.

In this embodiment, the second magnetic attraction piece 9 is provided with a connecting piece, and the plugging head 7 is provided with a connecting hole 72 adapted to the connecting piece. During actual use, the connecting piece is a connecting screw, the center of the second magnetic attraction piece 9 is provided with a hole for a screw rod of the connecting screw to pass through, the connecting hole 72 is a threaded hole matched with the connecting screw, and the connecting screw passes through the hole in the center of the second magnetic attraction piece 9 and is in threaded connection with the connecting hole 72, so that the second magnetic attraction piece 9 and the blocking head 7 are fastened and connected.

In this embodiment, the blocking head 7 is made of an antistatic material. In practical use, the antistatic material has the following basic characteristics: 1. surface resistance of 10⁶～10⁸Omega, has excellent antistatic function; 2. excellent surface hardness and resistance to attack by chemical solvents; 3. the antistatic function is not easily influenced by humidity and temperature; 4. the appearance is beautiful, very smooth and flat, and the light transmittance is high; 5. high mechanical strength and excellent processability. Common antistatic materials include antistatic acrylic materials, antistatic polyvinyl chloride materials, antistatic polycarbonate materials, rubber materials, and the like. In specific implementation, the plugging head 7 is made of rubber.

Wherein those matters not described in detail in the specification are prior art known to those skilled in the art.

The aforesaid, only be the embodiment of the utility model discloses an it is not right the utility model discloses do any restriction, all according to the utility model discloses the technical entity all still belongs to any simple modification, change and the equivalent structure change of doing above embodiment the utility model discloses technical scheme's within the scope of protection.

Claims

1. A gas pipeline safety valve which is characterized in that: comprises a valve body (3), an air inlet end (1), an air outlet end (2), a valve core (6) and a plugging head (7) which are arranged in the valve body (3),

the valve core (6) is provided with a first conical channel (61) and a second channel (62) communicated with the first channel (61), the first channel (61) is connected with the air inlet end (1), the second channel (62) is connected with the air outlet end (2),

the blocking head (7) is adapted to the shape of the first channel (61),

the blocking head (7) is arranged on the valve opening and closing assembly.

2. A gas pipeline safety valve according to claim 1, wherein: the valve opens and closes subassembly including setting up case fixing base (4) in valve body (3), inhale piece (8) with case fixing base (4) fixed connection's first magnetism, with piece (9) is inhaled to shutoff head (7) fixed connection's second magnetism, and with piece (9) fixed connection's catch bar (10) is inhaled to the second magnetism, catch bar (10) meet with the valve handle, first magnetism is inhaled and is seted up the confession on piece (8) through-hole that shutoff head (7) passed, piece (8) and second magnetism are inhaled to first magnetism and are inhaled and inhale piece (9) magnetism and inhale the connection.

3. A gas pipeline safety valve according to claim 2, wherein: and a guide column (71) matched with the through hole is arranged at the top end of the blocking head (7).

4. A gas pipeline safety valve according to claim 3, wherein: the second magnetic part (9) is provided with a connecting part, and the blocking head (7) is provided with a connecting hole (72) matched with the connecting part.

5. A gas pipeline safety valve according to claim 1, wherein: the plugging head (7) is conical.

6. A gas pipeline safety valve according to claim 5, wherein: the vertical section of the plugging head (7) is isosceles trapezoid.

7. A gas pipeline safety valve according to claim 1, wherein: the blocking head (7) is made of an anti-static material.