RU14264U1 - GAS ORDORIZATION SYSTEM - Google Patents

Abstract

A gas odorization system comprising an odorant storage tank with a filling device, a working tank, a level gauge containing a measuring tank with a level indicator, primary and backup odorizers, process pipelines and shut-off valves, characterized in that the filling device is made in the form of a half-connector with a shut-off element with the possibility of attaching a reciprocal half-connector to it with a locking element located on the sleeve of the refueling tank, the odorant storage tank contains a safety valve with an opening pressure of water, not exceeding 0.07 MPa, the output of which is connected to the candles through a deodorizer, self-locking valves are located between the measuring tank and the level indicator, and an odorant filter is installed in front of the odorizers.

Description

Gas odor system

The utility model relates to gas transportation texas and can be used at gas distribution stations (GDS).

In accordance with industry standards, gas distribution stations supplying natural gas to settlements should contain a gas odorization system, which, as a means of safety, in order to give the gas a specific odor and detect possible leaks, provides an undressed introduction of an odorant (ethylmercaphan) into the gas pipeline .

Known systems odorshadin gas, autonomously included in the composition of the GDS 1, p. 14,15,17,19,22,24,26, which contain the working capacity of the odorant with an odorant supply for several days, a gas odorizer, technological piping and shut-off valves. In addition, in accordance with industry standards 2, pushst 5.48, odorization systems must contain an odorite storage tank with an odorant reserve of at least 2 months, of which

the working capacity is periodically refilled. The storage tank contains a refueling device (gorset-sch), through which the tank is refilled from the mobile odoraite refueling tank. As a rule, the completion of odorization systems with the storage capacity of the required volume is performed

MGG f 17D 1/02

gas transportation on the basis of the missed ability of the GDS.

The disadvantages are the following: the negative impact on the toxic environment during refueling, difficulty in controlling odorant consumption, runtime of the operating mode and failure of the odorizer due to clogging of the internal cavity by mechanical pressure, increased labor cost and cost, -hraiilshtse refers to the catheterin of vessels working under pressure.

Significantly reduces the negative impact on the environment in the use of closed refueling, in which the sleeve of the mobile refueling tank is hermetically floured to the neck of the tank with a bayonet-type connection like fire hoses. However, after refueling is completed and the sleeve is disconnected, there are odorant ostapsi in the sleeve and neck tubes, which, when evaporated, pollute the fouled environment.

B. As the protop of the proposed choice, the known pelvic odornzacin system, included in the GDS 1, p. 10.11, which contains a quick-drying odorant with a refueling device, a working bunker, a level gauge, a measuring tank containing a level indicator, and the main odorizer (fitnnny) , odornozagor reserve (drip), tekhnologichede pipelines and stopcocks.

The presence in this system of a measuring tank, which is a vertically located vessel with a small internal cross-sectional area, to which the pointer is connected

level, which is a transparent glass tube equipped with a measuring scale, allows a simple and convenient way to visually control the consumption of odor1 t in a short time period.

However, in case of an emergency (for example, a gross violation of the rules of exp, patches or a manufacturer’s defect) in case of destruction of the glass tube of the level indicator and its depressurization, an odorant from the measuring tank may get into the environment.

The use of a backup odorizer in a known system increases its reliability, but the main reason for failure of odorizers is their clogging with mehlic impurities, it is not excluded.

The purpose of the utility model is to eliminate the above disadvantages of known odorization systems, namely, increasing reliability, reducing the complexity of operation and reducing the cost of the system, environmental damage.

The technical result is achieved by the fact that in the known gas odorization system containing an odorant storage tank with a fueling device, a working tank, a level gauge, a measuring tank containing a level indicator, main and reserve odorizers, those pipelines and shut-off valves, according to a utility model, a fueling device made in the form of a half-connector with a locking element with the possibility of attaching to it a reciprocal half-connector with a locking element located on the sleeve of the refueling tank, the storage capacity is odor anta contains safety valve

with an opening pressure not exceeding 0.07 MPa, the output of which is connected to the candles through a deodorizer, self-locking valves are located between the measuring tank and the level indicator, and an odorant filter is installed in front of the odorizers.

The drawing shows a diagram of a gas odorization system.

The system contains an odorant storage tank 1 with a filling device in the form of a half-connector 2 with a locking element 4 with the possibility of attaching to it a reciprocal half-slot 3 (not shown) with a locking element 5 with a locking element 5, a safety valve 6, the inlet of which is connected to the internal cavity of the storage tank and the output is through a deodorizer 7 with candles 8, a working tank 9, a level gauge containing a metering tank 10 connected through self-locking valves 11 with a level gauge 12, an odorant filter 13, an electrically controlled od polarizers gas main 14, trickling Odorization gas reserve 15, the coupling process piping 16,17,18,19, stop valves, 23, 26. The internal cavities of the containers 9 and 10, located above the level of the odorant, are connected by a pipeline 19 to a gas pipeline 27,

The system is refueled by an odorant and works as follows.

Half-connector 3, located on the tanker’s sleeve, is connected to half-connector 2, and the process of sealing the external fastener between the half-connectors and opening of the locking elements 4 and 5. The storage tank is refilled by displacing the odorant from the filling;

gas, taken, as a rule, from the gas pipeline through the pressure reducer (not shown). Upon completion of refueling, the connector is disconnected in half 3, with the closure of the locking elements 4 and 5 first, and then the depressurization of the joint between the 1 connectors. Thus, the odor during ingestion into the environment and its pollution are completely excluded.

To refuel the working tank 9, open the valve 20 and by displacing the odorant from the storage tank 1 with excess gas pressure, taken; washed, as a rule, from the gas pipeline through a pressure reducer (not shown), fill the tank 9 through pipeline 16. At the same time, with open cranes 21, filling with the odorant of the measuring axis 10 takes place. 10. The valve 2 О is closed.

In the event of a pressure exceeding 0.07 MPa in the tank 1 during operation (for example, from the temperature expansion of the odorant and its vapors), the safety valve 6 opens, as a result of which the excess gas pressure passing through the deodorizer 7 is neutralized and etched onto the candle 8, protecting capacity 1, which increases reliability. In addition, the limitation of the pressure in the tank by a value not exceeding 0.07 MPa, removes it from the category of vessels operating under pressure 3, clause 1.1.2, which reduces the labor-intensive operation and reduces the cost of the system.

From the working tank 9 with the open valve 22 through the pipe 17 odorsp comes to the filter odorant 13, passing through which it is cleaned of mechanical impurities, which eliminates clogging of the odorizer, increasing the reliability of the system.

With the tap 23 open, the odorant enters the main electrically controlled gas odorizer 14. The gas odorizer 14 carries out normalized input of the odor meter into the gas pipeline 27.

The backup odorizer 15 of the droplet type by shutting off the valve 25 is excluded from the system and can be turned on if, for example, a power failure occurs on the main odorizer 14. The presence of an odor filter in front of the odorizer eliminates disturbances in operation and failure of the odorizers due to clogging by mechanical impurities, which increases the reliability of the system.

The pipeline 19 working 9 and metering 10 tanks are connected to the gas pipeline 27, ensuring equal pressure in the tanks and the gas pipeline and, therefore, the independence of the performance of the odorizer from possible changes in pressure in the gas pipeline.

To control the flow of the odorant, the valves 21 are closed, cutting off the odorant located in the metering tank 10, the valve 22 is closed, the crane 24 is opened, providing the odorant through the pipe 18 to the odorizer only from the metering tank. By changing the odorant level in the transparent tube of the level 12 indicator, the odorant consumption per unit time is visually determined on a measuring scale.

During normal operation of the level gauge on self-locking valves 11 installed between the measuring tank and the level gauge, there is no pressure drop and the valves are open. When a pressure drop occurs, what happens in the event of an emergency when the level indicator is depressurized.

self-locking valves 11 are closed, excluding the ingress of odorant into the environment / and its contamination.

According to the technical specifications of the Samaratransgaz enterprise, safety valves, level gauges with self-locking valves, odorant filters, quick-disconnect couplings with locking elements (half-plugs) were developed and manufactured, which were absent in industrial production.

Using this equipment, in accordance with the proposed model, the system of gas odorization on

a number of gas distribution stations and mobile tankers, the pilot operation of which showed their advantage over existing ones.

Sources of information taken into account;

1. The catalog of technological equipment of gas distribution stations of gas trunk pipelines.

Moscow, 1997 p. 10.11, I, 15.17.17.19.22.24.24. (attached)

2. Norms of technological design. Main gas pipelines. Part I. Gas pipelines. Section Z. Gas distribution and gas measuring stations. Moscow, IRC Gazprom, 1997 Clause 5.48 (attached) 3. Rules of the device and working under pressure 1996. Clause 1.1.2.

N.I. Rosseyev

P. Kondratiev V.I. Orphan . Tibatin safe operation of blood vessels, (PB10-115-96) Moscow, PIO OBT

Claims (1)

A gas odorization system comprising an odorant storage tank with a filling device, a working tank, a level gauge containing a measuring tank with a level indicator, primary and backup odorizers, process piping and shut-off valves, characterized in that the filling device is made in the form of a half-connector with a shut-off element with the possibility of attaching a reciprocal half-connector to it with a locking element located on the sleeve of the refueling tank, the odorant storage tank contains a safety valve with an open pressure a fish tank not exceeding 0.07 MPa, the output of which is connected to the candles through a deodorizer, self-locking valves are located between the measuring tank and the level indicator, and an odorant filter is installed in front of the odorizers.