RU60368U1 - GAS CONNECTION UNIT FOR GAS FIRE EXTINGUISHING MODULE - Google Patents

Abstract

The utility model relates to fire fighting equipment, specifically to the installation and operation of control and regulatory equipment used in gas fire extinguishing installations.

The problem to be solved is the multiple removal and installation of a manometer during operation without losing an expensive extinguishing agent and increasing the level of safety of staff.

The problem is solved in that in the connection unit of the pressure gauge to the gas fire extinguishing module, which includes the pressure gauge itself and the elements of its connection to the module, the connection elements are made in the form of a check valve, spring, fitting, adapter with input and output cavities that can communicate with each other.

Fig. 2

Description

The utility model relates to fire fighting equipment, specifically to the installation and operation of industrial control and control equipment used in gas fire extinguishing installations, and can be used to eliminate fires in enclosed spaces of industrial premises, warehouses, mines, as well as in oil producing, oil refining and other industries related to the receipt, storage, processing and use of fuels and other combustible substances.

In addition, the utility model can be applied in those industries where, in order to prevent possible ignition, the creation of a combustion inert gas environment is required.

Stationary installations for extinguishing a fire with a gas extinguishing agent are known, including pressurized gas cylinders and locking-starting heads, in which pressure gauges are installed to control gas pressure. (see N.F. Bubyr, R.P. Vorobyov, Yu.V. Bystrov. Operation of fire automatics installations. - M., 1988. - S.195-197).

In accordance with the applicable safety requirements and the “Rules for the Design and Safety of Vessels Operating under Pressure PB 10-115-96”, annual maintenance of gas fire extinguishing installations includes operations for checking and examining pressure gauges.

The design of a module with a gas extinguishing agent under pressure should provide the ability to replace the manometer for periodic inspection at least once a year.

Such gas fire extinguishing installations with shutter heads are described in the book: Bolotin E.T. Installation, commissioning and operation of fire extinguishing installations. - M., 1988. - p.309-311, in which the pressure gauge is connected to the start valve of the shutter head installed in the gas phase zone with the help of a fitting.

The disadvantage of such installations is that when removing the pressure gauge, in order to check it and replace it with a new one, the gas extinguishing agent spontaneously releases from the cylinder, which is unsafe for maintenance personnel and entails material and

financial costs associated with the loss of an expensive extinguishing agent.

The inventive utility model solves the problem of multiple removal and installation of the pressure gauge during the operation of fire extinguishing modules without losing an expensive extinguishing agent, and most importantly, increases the level of safety in the work of staff.

To achieve this result, in the connection unit of the pressure gauge to the gas fire extinguishing module, which includes the pressure gauge with the shank and the elements of its connection, the latter are made in the form of a check valve, spring, fitting, adapter with input and output cavities that can communicate with each other.

Due to the presence of the above distinguishing features, it becomes possible to solve the problem of repeatedly removing and installing a manometer during operation of gas fire extinguishing modules without additional material costs, while increasing the level of safety of maintenance personnel that meets the fire safety standards of NPB 54-2001 and the rules for the construction and safe operation of vessels, working under pressure PB 10-115-96.

The proposed drawing shows: figure 1 is a General view of the connection node of the manometer to the gas fire extinguishing module; figure 2 - connection elements.

A utility model includes a cylinder with a fire extinguishing agent under pressure 1, a locking start-up head 2, a pressure gauge 3 with a shank 4. A pressure gauge 3 is connected to the locking-start-up head 2 with a fitting 7, a check valve 6 acting on the spring 8, an adapter 5 with cavities C and B, with the ability to communicate with each other.

The operation of the device is based on the principle of operation of a non-return valve with a one-way direction of the conducted medium.

The connection unit is installed in the locking and starting head 2, located on the gas phase of the cylinder 1 and is constantly under gas pressure.

The pressure gauge 3 is connected by screwing the shank 4 into the nozzle 7 from the side of the cavity C. The shank 4 forcibly presses the check valve 6 from the seat of the nozzle 7, the cavities B and C communicate with each other. The node has been opened. The manometer shows the gas pressure in the cylinder. No air admission allowed.

The manometer is removed (removed) by unscrewing the shank 4 of the manometer 3 from the fitting 7, while the valve 6 is pressed against the seat of the fitting 7 under pressure of forces:

a) spring force

b) the pressure force arising due to the difference in the areas of the back and front surfaces of the valve 6. Cavity B and C are disconnected from each other. Cavity C communicates with the atmosphere. The connection node is closed. The pressure gauge indicates zero pressure. No air admission allowed.

Tests of the proposed device (utility model) were carried out in the Nizhny Novgorod branch of Technos-M + LLC in accordance with the safety requirements and the “Rules for the devices and safety of pressure vessels”. As modules for gas fire extinguishing, modules and batteries of the MGP-60 type were used in the amount of 2 pcs., Equipped with a manometer connection unit in accordance with the claimed useful module. Checking the possibility of removing the pressure gauge was carried out on modules prepared for operation. The pressure gauge was replaced with a previously checked one within no more than 1 minute. The pressure gauge after replacement did not differ from the initial values.

When checking, gas extinguishing agents were used, which are listed in table 1.

Type of fire extinguishing module Name of gas extinguishing agents MGP-60 module Freon with propellant: Freon 125HP (C ₂ F ₅ N) Freon 318Ts (C ₄ F ₈ N) Freon 227еа (С ₃ F ₇ Н) Battery B2 ......... 10 MGP-60 Freon 31-10 (C ₄ F ₁₀ )

Technical gas was used as a propellant.

The estimated economic effect is 20-30 thousand rubles for the ^1st test cycle on one module.

Claims (1)

A node for connecting a manometer to a gas fire extinguishing module, including the manometer with a shank and elements for connecting it to the module, characterized in that the connection elements are made in the form of a check valve, spring, fitting, adapter with input and output cavities that can communicate with each other.