CN210484721U

CN210484721U - Direct-installed normally-opened sliding rod locking type gas pressure-loss valve closing device

Info

Publication number: CN210484721U
Application number: CN201921288683.XU
Authority: CN
Inventors: 孔载明
Original assignee: Hangzhou Jie'an Fire Equipment Co Ltd
Current assignee: Hangzhou Jie'an Fire Equipment Co Ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-05-08
Anticipated expiration: 2029-08-09

Abstract

The utility model discloses a direct-installed normally-opened slide bar locking type gas pressure-loss valve closing device, which comprises a valve body and a valve cover, a housing and a housing cover are arranged above the valve cover, a gas decompression starter is arranged above the housing cover, two slide bar lock hooks capable of rotating in opposite directions are arranged below the housing cover, a sealing component is movably arranged on the valve cover, the sealing assembly comprises a valve rod and a sealing cover which are integrally arranged, the valve rod is movably arranged on the inner side of the valve cover, a valve closing pressure spring is arranged on the outer side of the valve rod above the sealing cover, the upper end and the lower end of the valve closing pressure spring are respectively connected with the valve cover and the sealing cover, a gas pressure-loss starter drives a starter sliding rod to move downwards to pass through a sliding rod locking hook and lock the upper end of the valve rod to keep a valve body open state, and the gas pressure-loss starter drives the starter sliding rod to move upwards to loosen the sliding. The utility model discloses safe and reliable, sexual valence relative altitude satisfy the market demand better.

Description

Direct-installed normally-opened sliding rod locking type gas pressure-loss valve closing device

Technical Field

The utility model relates to an open and close valve device especially relates to a gaseous decompression valve device of direct-mounted normal open type slide bar locking formula.

Background

At present, natural gas is widely used as basic energy in the middle of daily life of people, and in order to prevent fire accidents, guarantee the personal safety of people and avoid property loss, a gas company and related departments need to strengthen the safety management level of natural gas conveying pipelines and gas cylinders distributed in thousands of households.

When fire caused by different factors such as man-made or mechanical factors occurs, the natural gas supply should be sensed and cut off quickly as soon as possible to avoid the natural gas from contacting with the fire source to promote the fire, so as to reduce the severity of the accident and create conditions for timely extinguishing the fire. In order to control the fire, the supply of the natural gas pipeline can be cut off manually, but the natural gas pipeline is not suitable for many places, has poor safety and even causes personal injury, and therefore, the automatic valve closing device is very important.

The existing automatic valve closing device usually adopts an electromechanical combination mode, a fire condition transmission signal is detected to a controller through an inductor, and then a corresponding mechanical actuating mechanism is controlled to complete the valve closing action.

SUMMERY OF THE UTILITY MODEL

In order to overcome prior art's not enough, the utility model aims to provide a directly adorn gaseous decompression valve closing device of normally open type slide bar locking formula, safe and reliable, the sexual valence relative altitude to excellent performance satisfies the market demand better.

The purpose of the utility model is realized by adopting the following technical scheme:

the direct-mounted normally-opened sliding rod locking type gas pressure-loss valve closing device comprises a valve body and a valve cover, wherein a housing and a housing cover are arranged above the valve cover, a gas pressure-loss starter is arranged above the housing cover, two sliding rod lock hooks capable of rotating in opposite directions are arranged below the housing cover, a sealing assembly is movably arranged on the valve cover and comprises a valve rod and a sealing cover which are integrally arranged, the valve rod is movably arranged on the inner side of the valve cover, a valve rod pressure spring is arranged on the outer side of the valve rod above the sealing cover, the upper end and the lower end of the valve pressure spring are respectively connected with the valve cover and the sealing cover, a sliding rod of the gas pressure-loss starter is driven to move downwards to lock the upper end of the valve rod through the sliding rod lock hook to form a valve body opening state.

Further, the gas pressure-loss starter comprises a starter body and a starter cover which are integrally arranged, a sliding rod piston is arranged in a gas chamber between the starter body and the starter cover, a gas pipe connector is arranged on the starter cover above the gas chamber, a starter sliding rod is fixedly arranged on the sliding rod piston, the upper end and the lower end of a starter compression spring outside the starter sliding rod are respectively connected with the sliding rod piston and a step surface on the inner side of the bottom of the starter body, and the sliding rod piston and the starter sliding rod are reset upwards under the action of the starter compression spring after the gas chamber is inflated to drive the starter sliding rod to move downwards and the gas pressure of the.

Furthermore, the bottom of the sliding rod piston is provided with a sealing structure which is in contact with a step in the middle of the inner side of the starter body in an air chamber inflation state and keeps the sliding rod piston and the starter body airtight.

Furthermore, a group of cylindrical bodies are respectively arranged on the left side and the right side of the lower part in the housing cover, the two groups of cylindrical bodies are symmetrically arranged and form a cavity inside, and the two sliding rod lock hooks are respectively arranged between the two groups of cylindrical bodies on the left side and between the two groups of cylindrical bodies on the right side.

Furthermore, the bottom of the housing cover outside the two slide bar lock hooks is fixedly provided with a limiting spring piece.

Furthermore, the top of the valve rod is provided with a hanging rod, and the outer end of the hanging rod extends out of a strip-shaped groove on the side part of the housing to realize manual stirring.

The utility model discloses a driving piece drives the valve rod and sealed lid shifts up, gaseous decompression starter drive starter slide bar moves down and makes starter slide bar bottom compress tightly slide bar latch hook upper portion inboard, then make the valve rod top after moving up lock in the hook groove of slide bar latch hook under the packing force effect of starter slide bar, thereby realize that gas circuit passageway keeps opening the state in the valve body, gaseous decompression back will drive starter slide bar upward movement make starter slide bar bottom break away from slide bar latch hook upper portion therefore the slide bar latch hook can outwards loosen, valve rod and sealed lid then downstream under the effect of the power of closed valve pressure spring this moment, thereby close the gas circuit passageway in the valve body.

Compared with the prior art, the beneficial effects of the utility model reside in that:

(1) can carry out multichannel trachea according to the place needs and arrange, cause the trachea to blow then the air chamber pressure release after the fire, starter compression spring drive starter slide bar goes upward to reset, and then triggers the action that sealing assembly breaks away from the internal gas circuit of execution shutoff valve from the latch hook subassembly, and the response is sensitive, and the action is rapid, and the good reliability can be installed again at the kneck after the trachea burns out, practices thrift use cost, and comprehensive cost is low.

(2) Be provided with the seal structure of leak protection gas bottom the slide bar piston, can promote device's reliability and security performance, design the slide bar latch hook for embedding the hinge structure between the columnar body, can keep accurate and the steady operation in latch hook subassembly position, set up spacing spring leaf in the slide bar latch hook outside, then provide the auxiliary force for the motion of starter slide bar and seal assembly's valve rod in the slide bar latch hook, ensured the smooth and easy going on of opening and closing valve process.

(3) Can promote the valve rod through the peg and then by starter slide bar locking in the slide bar latch hook, then realize the valve action of closing under the effort of valve pressure spring after gaseous decompression, sealing assembly design commonality is strong, and the security is good, ensures the utility model has the advantages of simple overall structure, production, installation and maintenance are convenient to easily realize scale production and application.

Drawings

FIG. 1 is a schematic view of the locking type gas pressure-loss valve closing device with a direct-installed normally-opened sliding rod of the present invention;

FIG. 2 is a schematic diagram of the operation of the valve rod of the present invention when lifted into the slider hook;

FIG. 3 is a schematic sectional view of the utility model at normal open time;

FIG. 4 is a schematic cross-sectional view of the slipping valve of the gas pressure-loss hook of the present invention when closed;

fig. 5 is an exploded view of the assembly of the slide bar hook of the present invention;

FIG. 6 is a schematic sectional view of the slider hook of the present invention;

FIG. 7 is a schematic cross-sectional view of the valve stem of the present invention when the slide bar hook is pushed upward;

fig. 8 is a schematic diagram of the sliding rod hook being lifted up to the sliding rod hook after the sliding rod enters the sliding rod hook after the gas pressure-loss starter is inflated.

The labels and counterparts in the figures are: 1-gas pressure loss starter, 2-gas pipe joint, 3-cover shell cover, 4-hanging rod, 5-cover shell, 6-valve cover, 7-valve body, 8-sealing cover, 9-limiting spring piece, 10-slide rod latch hook, 11-valve rod, 12-closing valve pressure spring, 13-slide rod piston, 14-starter slide rod and 15-starter compression spring.

Detailed Description

The present invention will now be described in more detail with reference to the accompanying drawings, and it is to be understood that the following description of the present invention is made only by way of illustration and not by way of limitation with reference to the accompanying drawings. The various embodiments may be combined with each other to form other embodiments not shown in the following description.

The direct-installed normally-opened sliding rod locking type gas pressure-loss valve device shown in fig. 1, fig. 2, fig. 3 and fig. 4 comprises a valve body 7 and a valve cover 6, wherein a sealing device for opening or closing a gas passage in the valve body 7 is arranged on the valve cover 6, the sealing device comprises a gas pressure-loss starter 1, a housing 5 and a sealing assembly, the housing 5 is installed on the valve cover 6, the gas pressure-loss starter 1 is installed on the housing cover 3 above the housing 5, a locking hook assembly is installed below the housing cover 3, and the valve cover 6 in the housing 5 is provided with the sealing assembly.

The gas pressure-loss starter 1 comprises a starter body and a starter cover which are integrally arranged, a sliding rod piston 13 is arranged in an air chamber between the starter body and the starter cover, an air pipe connector 2 is arranged on the starter cover above the air chamber, a starter sliding rod 14 is fixedly arranged on the sliding rod piston 13, and the upper end and the lower end of a starter compression spring 15 outside the starter sliding rod 14 are respectively connected with the sliding rod piston 13 and a step surface on the inner side of the bottom of the starter body. The trachea can carry out the multichannel and arrange in the application place, and if the trachea blows out then cause the air chamber pressure release when the condition of a fire takes place, starter compression spring 15 drive starter slide bar 14 goes upward to reset, and then triggers the action that sealing assembly self-locking hook subassembly breaks away from the internal gas circuit of execution shutoff valve, and the response is sensitive, and the action is rapid, and the good reliability, and through the trachea of more changing the burn out, gaseous decompression starter 1 can continue to use, practices thrift use cost.

The air chamber is inflated in a normally open state, at the moment, the sliding rod piston 13 moves downwards under the action of air pressure to be in contact with the step in the middle of the inner side of the starter body, and in order to avoid potential safety hazards caused by air leakage of the air chamber in the device using and reusing processes, the bottom of the sliding rod piston 13 is provided with a sealing structure for preventing air leakage.

The lock hook assembly comprises two sliding rod lock hooks 10 which are arranged below the housing cover 3 and can rotate in opposite directions, lock hook grooves are formed in the inner sides of the sliding rod lock hooks 10, a sliding rod piston 13 drives the starter sliding rod 14 to move downwards after the air chamber is inflated, so that the outer side surface of the bottom end of the starter sliding rod 14 is pressed against the inner side of the upper portion of the sliding rod lock hook 10, and a rod cap at the top of the valve rod 11 moves upwards under the action of pressing force of the outer side surface of the bottom end of the starter sliding rod 14 and then is locked.

As a preferred embodiment, as shown in fig. 5 and 6, the locking hook assembly includes two sets of cylindrical bodies forming a cavity, the two sets of cylindrical bodies are symmetrically disposed at the left and right sides of the inner lower portion of the housing cover 3, and the two sliding rod locking hooks 10 are respectively rotatably disposed between the two cylindrical bodies of the left set and between the two cylindrical bodies of the right set. And in order to provide certain auxiliary acting force for the motion process and ensure the position accuracy of the slide bar lock hooks, the bottom of the housing cover 3 outside the two slide bar lock hooks 10 is fixedly provided with a limiting spring leaf 9.

The sealing assembly comprises a hanging rod 4, a valve rod 11, a valve closing pressure spring 12 and a sealing cover 8, the valve rod 11 is movably arranged on a protruding column on the inner side of a valve cover 6, the top of the valve rod 11 is movably embedded in a locking hook assembly, the top of the valve rod 11 is provided with a hanging rod 4 and the outer end of the hanging rod 4 extends out of a strip-shaped groove on the side part of a housing 5, the sealing cover 8 is fixedly arranged at the bottom of the valve rod 11, the outer side of the valve rod 11 above the sealing cover 8 is provided with the valve closing pressure spring 12, the upper end and the lower end of the valve closing pressure spring 12 are respectively connected with the outer surface of the protruding column and the inner side step surface of the sealing cover 8, the valve rod 11 can be lifted through the hanging rod 4 and then locked in a sliding rod locking hook 10 by.

In specific implementation, as shown in fig. 2, 3 and 8, the hanging rod 4 is held by hand to lift the valve rod 11 upwards, the tapered wedge surface at the top end of the valve rod 11 pushes the sliding rod locking hook 10 outwards away, after the pressure storage cylinder of the gas pressure loss starter is filled with gas, the sliding rod piston 13 pushes the sliding rod 14 to extend into one end of the sliding rod locking hook 10, so that the sliding rod locking hook 10 cannot be loosened outwards, the valve rod 11 is firmly hung on the sliding rod locking hook 10, and the sealing plug 8 fixed on the valve rod 11 is separated from the sealing surface of the valve body, so that the valve is kept in an open state.

As shown in fig. 4 and 7, after the pressure of the pressure storage cylinder of the gas pressure-loss starter is lost, the gas in the cylinder body is exhausted, the actuator sliding rod 14 retracts due to the acting force of the starter compression spring 15, the sliding rod locking hook 10 is released outwards without being blocked by the sliding rod 14, the valve rod 11 is separated from the sliding rod locking hook 10, the valve rod 11 and the sealing plug 8 slide downwards under the action of the valve-closing compression spring 12, the sealing surface of the valve body is closed, and the valve is in a closed state.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. Direct-mounted normally-open type slide rod locking type gas pressure-loss valve closing device comprises a valve body and a valve cover, and is characterized in that: the valve comprises a valve cover, a valve rod, a sealing cover, a valve rod, a sliding rod locking hook, a valve rod and a sealing cover are arranged on the valve cover.

2. The direct-installed normally-opened sliding-rod locking type gas pressure-loss valve closing device according to claim 1, wherein: the gas pressure-loss starter comprises a starter body and a starter cover which are integrally arranged, a sliding rod piston is arranged in an air chamber between the starter body and the starter cover, an air pipe joint is arranged on the starter cover above the air chamber, a starter sliding rod is fixedly arranged on the sliding rod piston, the upper end and the lower end of a starter compression spring outside the starter sliding rod are respectively connected with the sliding rod piston and a step surface on the inner side of the bottom of the starter body, and the sliding rod piston and the starter sliding rod are upwards reset under the action of the starter compression spring after the air chamber is inflated to drive the starter sliding rod to move downwards and the gas pressure.

3. The direct-installed normally-opened sliding-rod locking type gas pressure-loss valve closing device according to claim 2, wherein: and the bottom of the sliding rod piston is provided with a sealing structure which is in contact with the middle step of the inner side of the starter body in an air chamber inflation state and keeps the sliding rod piston and the starter body airtight.

4. The direct-installed normally-opened sliding-rod locking type gas pressure-loss valve closing device according to claim 3, wherein: the left side and the right side of the lower part in the cover shell are respectively provided with a group of cylindrical bodies, the two groups of cylindrical bodies are symmetrically arranged and form a cavity inside, and the two sliding rod lock hooks are respectively arranged between the two groups of cylindrical bodies on the left side and between the two groups of cylindrical bodies on the right side.

5. The direct-installed normally-opened sliding-rod locking type gas pressure-loss valve closing device according to claim 4, wherein: and limiting spring pieces are fixedly arranged at the bottoms of the housing covers outside the two sliding rod lock hooks.

6. The direct-installed normally-opened sliding-rod-locked gas pressure-loss valve closing device according to any one of claims 1 to 5, wherein: the top of the valve rod is provided with a hanging rod, and the outer end of the hanging rod extends out of a strip-shaped groove in the side part of the housing.