CN216279682U

CN216279682U - Timing closing device for gas pipeline

Info

Publication number: CN216279682U
Application number: CN202122521800.6U
Authority: CN
Inventors: 周莉颖; 王泽洲; 周雪枫; 周忻吾
Original assignee: Beijing Gas Group Co Ltd
Current assignee: Beijing Gas Group Co Ltd
Priority date: 2021-10-20
Filing date: 2021-10-20
Publication date: 2022-04-12
Anticipated expiration: 2031-10-20

Abstract

The utility model discloses a timing closing device for a gas pipeline, and relates to a timing switch. Its purpose is in order to provide a gas pipeline timing closing device convenient, simple structure of safe in utilization. The utility model discloses a timing closing device for a gas pipeline, which comprises a valve body, wherein inlet joints and outlet joints at two ends of the valve body are respectively connected with the gas pipeline and a gas stove pipeline, a main control valve is arranged on the valve body and comprises a partition board, the partition board divides the interior of the main control valve into an upper cavity and a lower cavity, an air inlet branch and an air outlet branch are respectively arranged at two ends of the cavity at the upper part of the main control valve, the air inlet branch is connected with an air inlet pipeline in the valve body, the air outlet branch is connected with an air outlet pipeline in the valve body, a stop valve is arranged on the air inlet branch, a timer is arranged on the stop valve, an exhaust valve is arranged on the air outlet branch, a connecting rod is arranged below the partition board, a sealing valve head is arranged at the lower end of the connecting rod, and the pipeline between the inlet joint and the outlet joint can be sealed when the sealing valve head moves.

Description

Timing closing device for gas pipeline

Technical Field

The utility model relates to the technical field of timing switches, in particular to a timing closing device for a gas pipeline.

Background

Urban gas development and use are important indicators of the extent of urban development. In recent years, as the aging degree in China is continuously improved, the living standard is continuously improved, the number of gas users is greatly increased, and the gas safety problem is more prominent according to the great change of the composition and the structure of personnel.

Old people often forget to close the gas valve after using due to age, so that rice in the pot is burnt or overflows, burnt gas is extinguished, and further, fire disasters are caused, and greater danger is caused. Therefore, a simple and easy-to-operate device for timing off of gas in the pipeline is urgently needed, and the dangerous situation is reduced. Some current timing devices are relatively complex in structure or large in size, and are inconvenient to install.

For example, the Chinese utility model (publication number: CN200999919Y) discloses a gas timing switch which is convenient to control and adjust and can be turned off after timing. The device adopts two paths of air supply, and is complex to operate, so that people rarely use the device, more people use the direct air supply, and the timing switch can be forgotten to use when the device is temporarily used, so that the timing switch is similar to a nominal timing switch, and the use efficiency is reduced; in addition, the internal double-layer structure switch has larger internal contact area and larger frictional resistance, and the grooves on the two disks are air passages for connecting the two through pipes, so that the air tightness of the device is high pressure.

For another example, chinese utility model patent (publication No. CN208381418U) discloses a rotary gas timing switch controller, which has a complicated internal structure, many parts have high sealing requirements, and if a problem occurs in one part, the whole device will lose its function and effect, and the device also integrates a thermal valve and a flow valve, so the manufacturing cost is high, and if any part or any element in the complicated structure has a problem, the whole device will lose its function, so the complicated structure will also cause the increase of failure rate.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a timing closing device of a gas pipeline, which is safe and convenient to use and simple in structure.

The utility model discloses a timing closing device for a gas pipeline, which comprises a valve body, wherein an inlet joint and an outlet joint at two ends of the valve body are respectively connected with the gas pipeline and a gas stove pipeline, a main control valve is arranged on the valve body and comprises a partition board, the partition board divides the interior of the main control valve into an upper cavity and a lower cavity, an air inlet branch and an air outlet branch are respectively arranged at two ends of the cavity at the upper part of the main control valve, the air inlet branch is connected with an air inlet pipeline in the valve body, the air outlet branch is connected with an air outlet pipeline in the valve body, a stop valve is arranged on the air inlet branch, a timer is arranged on the stop valve, an exhaust valve is arranged on the air outlet branch, a connecting rod is arranged below the partition board, a sealing valve head is arranged at the lower end of the connecting rod, and the pipeline between the inlet joint and the outlet joint can be sealed when the sealing valve head moves.

The utility model relates to a timing closing device for a gas pipeline, wherein a main control valve is arranged on a valve body through a connecting piece.

The utility model relates to a timing closing device for a gas pipeline, wherein a main control valve comprises a return spring, the return spring is positioned below a partition plate, and the return spring is in contact with the lower surface of the partition plate.

The utility model relates to a timing closing device for a gas pipeline, wherein a main control valve comprises a shell, and a partition plate and a return spring are arranged inside the shell.

The utility model relates to a timing closing device for a gas pipeline, wherein a one-way valve is arranged on an air outlet branch, and the one-way valve is positioned on one side of an air outlet of an exhaust valve.

The utility model relates to a timing closing device for a gas pipeline, wherein a sealing valve head is in a hammerhead structure or a valve plate structure.

The utility model relates to a timing closing device for a gas pipeline, wherein a timer is connected with a stop valve through a connecting rod or a pull wire.

The timing closing device for the gas pipeline is different from the prior art in that the timing closing device for the gas pipeline utilizes the combination of the timer and the valve, utilizes the basic principle of a pneumatic control type valve, adopts gas to control the opening and closing of the valve, is simple in structure, safe and reliable, low in manufacturing cost and suitable for large-batch manufacturing and popularization. The utility model is especially suitable for families mainly including the elderly, can effectively prevent gas leakage caused by forgetting to close the gas valve during cooking, and ensures the life safety of gas users.

The timing closing device for the gas pipeline of the utility model is further explained with the attached drawings.

Drawings

FIG. 1 is a schematic structural view of a timing closing device for a gas pipeline in an open state according to the present invention;

FIG. 2 is a schematic structural view of the timing closing device for gas pipeline in the closed state;

the notation in the figures means: 1-a timer; 2-a stop valve; 21-an air inlet branch; 3-a main control valve; 31-a separator; 32-a return spring; 33-a connecting rod; 34-a sealing valve head; 35-a connector; 36-valve head sealing surface; 41-exhaust valve; 42-a one-way valve; 43-air outlet branch; 5-an inlet connection; 51-a gas pipeline; 6-outlet connection; 61-gas range pipe; 7-valve body.

Detailed Description

The following examples are intended to illustrate the utility model but are not intended to limit the scope of the utility model.

As shown in fig. 1 and 2, the timing closing device for the gas pipeline of the utility model comprises a valve body 7, wherein an inlet joint 5 and an outlet joint 6 are respectively arranged at two ends of the valve body 7. The inlet joint 5 and the outlet joint 6 are connected with the gas pipeline 51 and the gas stove pipeline 61, respectively.

The main control valve 3 is mounted on the valve body 7. The main control valve 3 is installed on the valve body 7 through a connecting piece 35, the connecting piece 35 can be a combination of a forming plate and a bolt or other structures capable of realizing fixed connection, and the two ends of the main control valve 3 are respectively provided with an air inlet branch 21 and an air outlet branch 43. One end of the air inlet branch 21 is connected with an air inlet pipeline inside the valve body 7 and positioned on the inner side of the inlet joint 5, and the other end is connected with the main control valve 3; one end of the air outlet branch 43 is connected to the main control valve 3, and the other end is connected to the air outlet pipeline inside the valve body 7 and positioned on the inner side of the outlet connector 6.

The air inlet branch 21 is provided with a stop valve 2, and the stop valve 2 is provided with a timer 1. When the set time of the timer 1 is not 0, the stop valve 2 is in a closed state; after the time set by the timer 1 is returned to 0, the stop valve 2 can be driven to open. The mode that the timer 1 drives the stop valve 2 can adopt a connecting rod or a stay wire connection, namely when the timer 1 reaches the set time, the valve 2 is opened through a steel stay wire; or the electronic timer and the electric valve are directly used for controlling the opening and closing of the valve 2 and the pressure relief valve 41, or the opening and closing of the valve can be controlled by adopting a single chip microcomputer like an electric cooker, and different options are set according to different cooked foods, so that the time setting is convenient.

The air outlet branch 43 is provided with an air outlet valve 41 and a one-way valve 42, and the air outlet valve 41 is close to one side of the main control valve 3 and used for exhausting air when the pipeline is opened. The check valve 42 is located on the outlet side of the exhaust valve 41 for preventing backflow of gas into the chamber a of the main control valve 3.

The main control valve 3 comprises a housing inside which a diaphragm 31 and a return spring 32 are arranged. The partition plate 31 divides the inner part of the shell into an upper cavity and a lower cavity, and the partition plate 31 and the periphery of the inner part of the shell are sealed. In this embodiment, the upper cavity is defined as cavity a and the lower cavity is defined as cavity B. And the gas inlet branch 21 and the gas outlet branch 43 are communicated with a cavity A of the main control valve 3. The return spring 32 is located below the partition plate 31, i.e., inside the B chamber, and contacts the lower surface of the partition plate 31.

A connecting rod 33 is mounted below the partition plate 31. The connecting rod 33 extends downwards to the inside of the valve body 7, the lower end of the connecting rod 33 is provided with a sealing valve head 34, and the sealing valve head 34 is of a hammer head type structure. When the air pressure in the main control valve 3 changes, the partition plate 31 can drive the connecting rod 33 to move, so that the position of the sealing valve head 34 in the valve body 7 is changed. A valve head sealing surface 36 is arranged between the air inlet pipeline and the air outlet pipeline inside the valve body 7, and the valve head sealing surface 36 is matched with the sealing valve head 34 for use. When the sealing valve head 34 is moved, the valve head sealing surface 36 can be brought into a closed or open state. The sealing valve head 34 may be a valve plate, which vertically faces downward and blocks the air inlet pipe to close the pipe, i.e. close the pipe between the inlet joint 5 and the outlet joint 6.

When the sealing valve head 34 presses on the valve head sealing surface 36, the device is in a closed state, namely, as shown in FIG. 2, the gas channel is cut off and is not communicated; when the gas in chamber a is exhausted, the return spring 32 rebounds and drives the sealing valve head 34 to move upwards and away from the valve head sealing surface 36, and the device is in an open state, namely, as shown in fig. 1, the gas can freely pass through the device.

The initial state of the timing closing device for the gas pipeline is that the timer 1 is in a return-to-0 state, the stop valve 2 is in an open state, the exhaust valve 41 is in a closed state, and the area of the partition plate 31 is far larger than that of the sealing valve head 34, so that after gas is filled in the cavity A, the partition plate 31 can overcome the elastic force of the return spring 32 to move downwards under the action of the gas pressure of the cavity A, the sealing valve head 34 is pressed down, the sealing valve head 34 is tightly pressed on the valve head sealing surface 36, and the whole device is in a closed state.

When the cooker is used, in the first step, according to different cooking foods, the timer 1 is used for setting the required cooking time, the stop valve 2 is in a closed state at the moment, and the cavity A is filled with high-pressure gas.

Second, the exhaust valve 41 is opened. At the moment, the device is in a closed state, due to the action of combustion, the gas pressure on one side of the gas stove pipeline 61 approaches to 0, after the exhaust valve 41 is opened, the gas in the cavity A can be exhausted through the exhaust valve 41 and the one-way valve 42, at the moment, the partition plate 31 can move upwards under the action of the return spring 32, the sealing valve head 34 can leave the valve head sealing surface 36 until the valve head sealing surface is completely opened, and then the exhaust valve 41 is closed;

after timer 1 reaches the settlement time, timer 1 drive stop valve 2 is opened, and the gas in the pipeline then gets into the A chamber of control valve 3 through pipeline 21 and stop valve 2, makes the upper portion of baffle 31 aerify, because the area of baffle 31 is greater than the area of sealed valve head 34 far away, after the gas got into the A chamber of control valve 3, can promote baffle 31 and push down reset spring 32, drive the sealed valve head 34 of lower part and move down, cover valve head sealing face 36 completely until, the valve is closed.

When the fuel gas needs to be reused, the first step and the second step are repeated.

The timing closing device for the gas pipeline utilizes the combination of the timer and the valve, utilizes the basic principle of the pneumatic control type valve, adopts the gas to control the opening and closing of the valve, has simple structure, safety and reliability and low manufacturing cost, and is suitable for large-batch manufacturing and popularization. The utility model is particularly suitable for families mainly including the elderly, can effectively prevent gas leakage caused by forgetting to close the gas valve during cooking, and ensures the life safety of gas users.

Although the utility model has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the utility model. Accordingly, such modifications and improvements are intended to be within the scope of the utility model as claimed.

Claims

1. The utility model provides a gas pipeline is closing device regularly which characterized in that: the automatic gas-liquid separation valve comprises a valve body, the gas pipeline and gas-cooker pipeline are connected respectively to the access connection and the exit linkage at valve body both ends, install main control valve on the valve body, main control valve includes the baffle, two cavitys about the baffle divide into main control valve's inside, the cavity both ends on main control valve upper portion are provided with air inlet branch road and branch road of giving vent to anger respectively, air inlet branch road is connected on the inside intake pipe way of valve body, the branch road of giving vent to anger is connected on the inside outlet duct way of valve body, be provided with the stop valve on the air inlet branch road, install the timer on the stop valve, be provided with discharge valve on the branch road of giving vent to anger, the connecting rod is installed to the below of baffle, the lower extreme of connecting rod is provided with sealed valve head, can seal the pipeline between access connection and the exit linkage during sealed valve head motion.

2. The gas pipe timing shut-off device as claimed in claim 1, wherein: the main control valve is installed on the valve body through a connecting piece.

3. The gas pipe timing shut-off device as claimed in claim 1, wherein: the main control valve comprises a return spring, the return spring is located below the partition plate, and the return spring is in contact with the lower surface of the partition plate.

4. A gas pipe timing shut-off device as claimed in claim 3, wherein: the main control valve comprises a shell, and a partition plate and a return spring are arranged inside the shell.

5. The gas pipe timing shut-off device as claimed in claim 1, wherein: and the air outlet branch is provided with a one-way valve which is positioned on one side of the air outlet of the exhaust valve.

6. The gas pipe timing shut-off device as claimed in claim 1, wherein: the structure of the sealing valve head is a hammer head type structure or a valve plate.

7. The gas pipe timing shut-off device as claimed in claim 1, wherein: the timer is connected with the stop valve through a connecting rod or a pull wire.