RU153395U1 - GAS-CYLINDER SHUT-OFF FITTINGS - Google Patents

Abstract

1. Shut-off valves of a gas cylinder, comprising a housing, valve, safety valve, two-way inlet-outlet valve with a vertical cylindrical channel with an axial hole for filling and discharging gas, in the lower part of which a cylindrical float is pivotally mounted on the rod, characterized in that the rod in the segment between its fixed end and the edge of the float contains a fold near the middle of this segment. 2. The shut-off and safety fittings of a gas cylinder according to claim 1, characterized in that the angle between the axes of the two parts of the rod relative to the bend point is 135-115 °.

Description

The inventive utility model relates to vessels operating under pressure and used for storage of propane-butane mixtures.

Known Crane for compressed or liquefied gases (US Patent No. 5,282,496 published 02/01/1994), the known valve is located inside the cylinder, a two-way valve allows gas filling and draining operations. The valve comprises at least two side openings, which can be closed by means of a sealing device made with an axial opening for gas passage, and which moves axially in the housing between the position of locking the holes with a spring and the opening position of the holes, under pressure gas and a control valve actuated by a float in the lower part of the housing.

A disadvantage of the known device is the low manufacturability and safety.

The closest analogue to the claimed device is a valve device for preventing overfilling of gas cylinders and similar portable containers (US Patent No. 4,541,464 published 09/17/1985), a known filling channel of a cylinder with liquid gas, or a similar device, includes a closing valve through a rod connected to float. When the balloon is filled with gas, the float begins to rotate the rod under the action of the buoyancy force and the closing valve closes the further gas flow. Tilting the cylinder also causes the rod to rotate, causing the valve to close.

The main disadvantage of the known prototype is the low adaptability and safety due to the design of the rod.

The purpose of the claimed utility model is to eliminate the above disadvantages in order to achieve such technical results as creating a design of a technological and safe device for shutting off the gas flow.

The goal of creating a technological and safe device is achieved as follows: the first level of safety of gas cylinder shut-off and safety valves is ensured by valve parts made of high-quality brass and high-strength polymers: valve body, valve, safety valve, two-way inlet-outlet valve with a vertical cylindrical channel with an axial bore to fill and drain the gas. In the lower part of this two-way inlet-outlet valve, a cylindrical float is pivotally mounted on the rod, while the rod on the segment between its fixed end and the edge of the float contains a fold near the middle of this segment.

The proposed design of safety valves for gas cylinders eliminates the disadvantages of valve models used in the North American market.

The inventive locking and safety valves of a gas cylinder in particular may be characterized in that the angle between the axes of the two parts of the rod relative to the bend point is 135-115 degrees.

The inventive shut-off and safety valves of a gas cylinder in particular may be characterized in that, depending on the configuration and volume of the cylinder, the length of the rod and the size of the float may vary.

In FIG. 1 and 2 shows the shut-off and safety valves of a gas cylinder, where the numbers indicate:

1. Cylinder

2. Case

3. Valve

4. Safety valve

5. Two-way inlet-outlet valve

6. Vertical cylindrical channel with axial bore

7. Hinge

8. Barbell

9. Fold

10. The float

11. Normal fluid level

12. Tilt fluid level

The shut-off and safety valves of the gas cylinder shown in the images are arranged as follows.

In the sealed housing of the cylinder 1 is an inlet device body 2, consisting of a valve 3, a safety valve 4 and a two-way inlet-outlet valve 5. Inside the body 1 there is a vertical cylindrical channel with an axial hole 6, at the end of which there is a rod 8, fixed with hinge 7. Rod 8 has a fold 9, at the end of the rod 8 is a float 10.

The shut-off and safety valves of the gas cylinder shown in the images operate as follows.

Refueling is carried out by connecting to a two-way inlet-outlet valve 5, a source, for example, liquefied gas (not shown in Fig.), When performing this operation, it is necessary to unscrew valve 3. In this case, in the initial state, the rod 8 with the float 10, under the action of gravitational of the Earth’s field, it is located almost vertically, while the vertical cylindrical channel with the axial hole 6 is open. When inside the cylinder 1, for example, liquefied gas is supplied, its level gradually increases and the float 10 with a rod 8, under the action of the buoyancy force, begins to rotate in the plane of the hinge 7.

The second level of security is ensured by the fact that when the level of the gas cylinder is filled to a level that provides a weighting indicator of filling in accordance with GOST 15860-84, but not more than 85% of the volume of the gas cylinder being filled, the level of normal liquid is 11, the gas flow automatically shuts off through the mechanism channel (not shown in FIG.). Valve 3 at the end of the operation of filling the cylinder - close.

Further operation of the cylinder is to connect the source of consumption to the bilateral inlet-outlet valve 5 and opening the valve 3.

To ensure the 3rd level of safety, since the mixture inside the container is under high pressure, a safety valve 4 is used, which allows overpressure in the system to be relieved.

Also, in quality, providing additional safety measures when refueling the cylinder, the rod 8 has a bend 9, despite the fact that the angle between the axes of the two parts of the rod relative to the bend point is 135-115 degrees. This measure allows you to limit the filling of the balloon when tilting the balloon itself, for example, to the liquid level when tilting 12.

The curved rod provides reliable overlap with very significant changes in the slope of the liquid level, which ensures safety when filling a gas cylinder and allows to achieve the claimed technical result, namely the creation of a design of a technological and safe device for blocking the gas flow.

Industrial applicability.

The inventive safe shut-off and safety valves for gas cylinders, which have no analogues on the market of the Russian Federation, countries of the Customs Union, and countries of the former Soviet Union, can be successfully used to create new highly safe gas cylinders, used for the planned replacement of shut-off valves of the old type in operation gas cylinders can find application in a wide range of industries.

Claims (2)

1. Shut-off valves of a gas cylinder, comprising a housing, a valve, a safety valve, a two-way inlet-outlet valve with a vertical cylindrical channel with an axial hole for filling and discharging gas, in the lower part of which a cylindrical float is pivotally mounted on the rod, characterized in that the rod on the segment between its fixed end and the edge of the float contains a fold near the middle of this segment. 2. Stop valves of a gas cylinder according to claim 1, characterized in that the angle between the axes of the two parts of the rod relative to the bend point is 135-115 °.

Images