CN2522697Y

CN2522697Y - Gas cyeinder safety valve

Info

Publication number: CN2522697Y
Application number: CN 01278634
Authority: CN
Inventors: 余火生
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-12-18
Filing date: 2001-12-18
Publication date: 2002-11-27
Anticipated expiration: 2011-12-18

Abstract

The utility model discloses a safe valve for a coal gas steel bottle, which comprises a gas-discharge interface seat of the steel bottle, a gas-in mouth and a gas-out mouth arranged on the interface seat, a handle and a plug mouth of the gas-out mouth. Besides, the utility model also comprises a valve cover, a spring, a piston and a discharge valve; the discharge valve is arranged on the gas-discharge interface seat of the steel bottle, and is communicated with the gas-in mouth; the spring and the piston are arranged inside the discharge valve; the valve cover is provided with a discharge channel, and is also tightly fixed on the outer wall of the terminal for the discharge valve. The safe valve for the coal gas steel bottle in the utility model is with simple structure and low cost. The installation can be finished only needing a little improvement to the original gas-discharge interface seat of the steel bottle; the utility model can overcome the shortcomings in the prior coal gas steel bottle that the explosive fire is easy to happen when the steel bottle is in hot or collided so as to eliminate the accident hidden trouble effectively.

Description

The gas cylinder safety valve

Technical field

The utility model relates to a kind of gas cylinder safety valve.

Background technique

General family expenses or the liquid gas storage mode of using in other occasions of the many employings of gas cylinder, when ambient temperature rises (for example breaking out of fire), perhaps in can, transportation and occasion such as deposit and occur because of operate miss colliding, when falling, the liquid gas that is stored up in the bottle will be vaporized fast, cause the rapid increase of steel cylinder pressure, bear the limit in case surpass it, will blast, cause life and the property loss that to retrieve, and gas cylinder of the prior art self is dredged and is led such device off because there not be installation to be similar to gas, when meeting with the problems referred to above, can't in time remove the dangerous condition, only helplessly wait for death, so exist strong unsafe factor.

Summary of the invention

The purpose of this utility model is to provide a kind of gas cylinder safety valve that can overcome the defective that exists in the prior art, and when the steel cylinder internal pressure was excessive, coal gas can leak by this safety valve, to alleviate steel cylinder pressure, avoids blast to take place.

The purpose of this utility model is achieved in that a kind of gas cylinder safety valve, comprises steel cylinder exhaust port seat, and this steel cylinder exhaust port seat is provided with suction port, air outlet, handle and socket air outlet plug thereon; It is characterized in that: described gas cylinder safety valve also comprises valve cover, spring, piston and drain tap, described drain tap is arranged on the described steel cylinder exhaust port seat, directly be communicated with described suction port, described spring and piston are movably arranged in the drain tap, be provided with the slit between wherein said piston and the drain tap inwall, described valve cover is provided with exhaust port and is fastenedly connected on the terminal outer wall of described drain tap, described piston 3 is compressed and is against the top of drain tap by installation spring within it.

Gas cylinder safety valve structure in the utility model is simple, cheap, only need the original steel cylinder interface block of giving vent to anger is transformed a little and can be installed and used, possess enough reliabilities, solve the defective of gas cylinder easy blast on fire when meeting heat or collision in the prior art, eliminated accident potential effectively.

Description of drawings

Fig. 1 is an internal structure schematic representation of the present utility model;

Fig. 2 is a working state schematic representation of the present utility model;

Fig. 3 is the front view of valve cover;

Fig. 4 is the side view of valve cover shown in Figure 3;

Fig. 5 is the front view of piston;

Fig. 6 is the side view of piston shown in Figure 5.

Embodiment

Below in conjunction with drawings and Examples the utility model is further described.

See also accompanying

drawing

1,2, be an embodiment of the present utility model, described gas cylinder safety valve is installed on the steel cylinder exhaust port seat 5, suction port 9, air outlet 8, handle 6 and the socket air outlet plug 7 thereon that is arranged on this steel cylinder exhaust port seat 5 is prior art, and its structure and configuration mode do not change.The gas cylinder safety valve of being set up mainly comprises valve cover 1, spring 2, assemblies such as piston 3 and drain tap 4, described drain tap 4 directly is opened on the described steel cylinder exhaust port seat 5, its exhaust passage directly is communicated with suction port 9, described spring 2 and piston 3 are installed in the drain tap 4, these two assemblies axially are being transportable, be provided with the slit between wherein said piston 3 and drain tap 4 inwalls, described valve cover 1 is provided with exhaust port 10 and is fastenedly connected on the terminal outer wall of described drain tap 4 by rib-loop, one end of described spring 2 is near the inwall of this valve cover 1, the other end compresses near the end face of described piston 3 and with described piston 3, is against the top of drain tap 4.

The concrete structure of described valve cover 1 is shown in Fig. 3,4, and the top of this valve cover 1 is provided with exhaust port 10, and this exhaust port 10 is through holes, is connected with exhaust passage in the described drain tap 4.

See also Fig. 5,6, described piston 3 outer walls are provided with boss 31, like this after this piston 4 is backed down, because form certain slit between the inwall of this boss 31 and described drain tap 4, high pressure draught can be overflowed thus, in addition, locate better for the ease of described spring 2, also have groove 30 on described piston 3 and end face that this spring 2 matches, the diameter of this groove 30 can be installed in spring 2 in this groove 30 greater than the spring external diameter.

When the steel cylinder internal pressure increases near safety margins, this pressure can back down piston 3, coal gas will leak by the slit between piston 3 and drain tap 4 inwalls, discharge via the exhaust port on the valve cover 1 again, can in time alleviate the pressure in the steel cylinder like this, avoid blast to take place, thereby play the effect of safety valve.

Claims

1, a kind of gas cylinder safety valve comprises steel cylinder exhaust port seat (5), and this steel cylinder exhaust port seat (5) is provided with suction port (9), air outlet (8), handle (6) and socket air outlet plug (7) thereon; It is characterized in that: described gas cylinder safety valve also comprises valve cover (1), spring (2), piston (3) and drain tap (4), described drain tap (4) is arranged on the described steel cylinder exhaust port seat (5), directly be communicated with suction port (9), described spring (2) and piston (3) are movably arranged in the drain tap (4), be provided with the slit between wherein said piston (3) and drain tap (4) inwall, described valve cover (1) is provided with exhaust port (10) and is fastenedly connected on the terminal outer wall of described drain tap (4), described piston (3) is compressed and is against the top of drain tap (4) by installation spring (2) within it.

2, gas cylinder safety valve according to claim 1 is characterized in that: described exhaust port (10) is arranged on the top of described valve cover (1), and this exhaust port (10) is a through hole, and the exhaust passage interior with described drain tap (4) is connected.

3, gas cylinder safety valve according to claim 1 and 2, it is characterized in that: described piston (3) outer wall is provided with boss (31), this boss (31) cooperates the certain hole of formation with the inwall of described drain tap (4), have groove (30) on described piston (3) and end face that described spring (2) matches, described spring (2) is installed in this groove (30).

4, gas cylinder safety valve according to claim 1 and 2 is characterized in that: described valve cover (1) is connected by rib-loop with the terminal outer wall of described drain tap (4).