CN109812608A - Combustion gas overcurrent automatic disconnecting device - Google Patents

Abstract

The invention relates to a gas overcurrent automatic cut-off device, which belongs to the technical field of gas safety equipment. It includes a pressure rod 7 disposed on the upper end of the pipe 1 and passing through the pipe, a spring 9 sleeved on the pressure rod, a sleeve 8 and a pressure cap 6, and a fine adjustment group 14 disposed at the lower end of the pipe 1 and passing through the pipe 1 , a superfluid ring 13 arranged on the inner wall of the pipeline 1 and located on the outlet port 12 of the pipeline on the side of the pressure rod 7, a superfluid sealing sleeve 11 set on the superfluid ring, arranged in the pipeline 1 and located on the pressure rod 7. The filter screen 5 on the inlet port 3 of the pipeline on the other side, and the ball valve 10 located between the superfluid ring 13 and the filter screen 5. The invention has simple structure and convenient installation. When the rear section of the gas steel pipe leaks suddenly or greatly, it uses the kinetic energy generated by the instantaneous pressure change of the gas during the flow process to push the ball valve to block the gas pipeline passage to achieve the purpose of automatically cutting off the gas in an emergency.

Description

Gas overcurrent automatic cut-off device

technical field

The invention relates to a gas overcurrent automatic cut-off device, which belongs to the technical field of gas safety equipment.

Background technique

When the hose in the rear section of the gas steel pipe (that is, from the connection between the gas steel pipe and the safety valve to the gas stove section) is aged, damaged, fallen off, or bitten by rodents, causing a sudden or large gas leakage, it is often difficult to detect in time, and it is easy to cause security incident.

SUMMARY OF THE INVENTION

In order to overcome the defects in the prior art, the purpose of the present invention is to provide a gas overcurrent automatic cut-off device with simple and compact structure, convenient installation, and automatic cut-off of gas when the rear section of the gas-fired steel pipe leaks rapidly or greatly.

In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a gas superfluid automatic cut-off device, comprising a pressure rod arranged on the upper end of the pipeline and passing through the pipeline, a spring and a pressure cap sleeved on the pressure rod, A fine-tuning group at the lower end of the pipeline and communicating with the pipeline, a superfluid ring arranged on the inner wall of the pipeline and on the gas outlet port of the pipeline on one side of the pressure rod, a superfluid sealing sleeve sleeved on the superfluid ring, arranged in the pipeline and The screen on the inlet port of the pipe on the other side of the strut, and the ball valve between the superfluid ring and the screen.

The ball valve is an aluminum ball, and the diameter of the ball valve is not less than the diameter of the superfluid sealing sleeve.

The inlet port of the pipeline is provided with a thread, and the filter screen is fixed by a fixing spring ring arranged at the bottom end of the thread.

Compared with the prior art, the present invention has the following beneficial effects due to the adoption of the above technical solutions: the structure is simple, the cost is low, and the installation is convenient; The kinetic energy generated by the pressure change pushes the ball valve to block the passage of the gas pipeline, so as to achieve the purpose of automatically cutting off the gas in an emergency, and effectively avoid gas accidents; the fine-tuning group can be used to automatically cut off the overcurrent according to the different conditions of the gas source and the gas cooker. The gas flow value of the device automatically cuts off the gas to be finely adjusted, so that the overcurrent automatic cut-off device can better play its effect.

Description of drawings

Fig. 1 is the structural representation of the present invention;

Figure 2 is a schematic structural diagram of a fixed coil;

Fig. 3 is the structural representation when the present invention automatically cuts off gas;

In the figure: pipe 1, thread 2, pipe inlet port 3, fixed spring ring 4, filter screen 5, pressure cap 6, pressure rod 7, sleeve 8, spring 9, ball valve 10, superfluid sealing sleeve 11, pipe outlet Port 12 , superfluid ring 13 , fine-tuning group 14 .

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments:

As shown in Figures 1-2: A gas superfluid automatic cut-off device, comprising a pressure rod 7 disposed on the upper end of the pipe 1 and passing through the pipe, a spring 9 sleeved on the pressure rod, a sleeve 8 and a pressure cap 6. The fine-tuning group 14 arranged at the lower end of the pipeline 1 and communicated with the pipeline 1, the superfluid ring 13 arranged on the inner wall of the pipeline 1 and located on the outlet port 12 of the pipeline on the side of the pressure rod 7, sleeved on the superfluid ring The superfluid sealing sleeve 11, the filter screen 5 disposed in the pipeline 1 and located on the pipeline inlet port 3 on the other side of the pressure rod 7, and the ball valve 10 located between the superfluid ring 13 and the filter screen 5. The fine adjustment group 14 is preferably arranged coaxially with the pressing rod 7 . The filter screen 5 has the dual functions of preventing debris from entering the pipe to block the air passage and preventing the ball valve from sliding down. The fine-tuning group 14 can perform micro-adjustment on the upper and lower positions of the ball valve 10, so that according to the different conditions of the gas source and the gas cooker, the gas flow value of the automatic cut-off gas by the over-current automatic cut-off device can be fine-tuned to make the over-current cut off automatically. The device performs its function better.

The ball valve 10 is an aluminum ball, and the diameter of the ball valve 10 is not smaller than the diameter of the superfluid sealing sleeve 11 .

The inlet port 3 of the pipeline is provided with a thread 2, and the filter screen 5 is fixed by a fixing spring 4 arranged at the bottom end of the thread.

When the gas pipeline is normal without leakage, the ball valve is located at the bottom of the gas pipeline. When the rear section of the gas pipeline, that is, the hose from the connection between the gas pipeline and the safety valve to the gas stove section, is aged, damaged, fallen off, or bitten by rodents, resulting in rapid gas leakage, When there is a big leak, the gas flow rate increases instantly, and the kinetic energy generated by the instantaneous pressure change during the flow of the gas lifts the ball valve to block the passage of the gas outlet port of the gas pipeline (as shown in Figure 3), so as to automatically cut off the gas in an emergency. After the pipeline is repaired, press the pressure cap 6 down, the pressure cap 6 presses the pressure rod 7 down, the spring 9 contracts, the lower end of the pressure rod 7 abuts the ball valve 10 on the top of the fine-tuning group at the bottom of the pipeline, and the air source is connected.

Claims (3)

1. A gas over-current automatic cut-off device, characterized in that it comprises a pressure rod (7) arranged on the upper end of the pipe (1) and passing through the pipe, a spring (9) sleeved on the pressure rod, a sleeve (8) and the pressure cap (6), the fine adjustment group (14) arranged on the lower end of the pipeline (1) and passing through the pipeline (1), and the pipeline arranged on the inner wall of the pipeline (1) and located on the side of the pressure rod (7) A superfluid ring (13) on the air outlet port (12), a superfluid sealing sleeve (11) sleeved on the superfluid ring, and a pipeline arranged in the pipeline (1) and located on the other side of the pressure rod (7) The filter screen (5) on the intake port (3), and the ball valve (10) located between the superfluid ring (13) and the filter screen (5). 2 . The gas over-current automatic cut-off device according to claim 1 , wherein the ball valve ( 10 ) is an aluminum ball, and the diameter of the ball valve ( 10 ) is not less than the diameter of the over-flow sealing sleeve ( 11 ). 3 . 3. The gas flow automatic cut-off device according to claim 1 or 2, characterized in that: the inlet port (3) of the pipeline is provided with a thread (2), and the filter screen (5) passes through a thread (2) arranged at the bottom end of the thread. Secure the spring ring (4).