RU2773706C1 - Complex for pumping and storage of gaseous products - Google Patents

Abstract

FIELD: gas products.

SUBSTANCE: invention relates to the storage and disposal of environmentally hazardous gas products. The complex for pumping out and storing environmentally hazardous gas products includes a valve block consisting of three valves: “inlet”, “outlet” and “pumping”, which are placed on a plate and connected to each other by a tee pipeline. The valve block separates the bleed channel into an inlet pipeline and an outlet pipeline. The inlet pipeline is hermetically connected to the bleed device of the tank containing environmentally hazardous gas products under high pressure. The valve block is connected by means of an evacuation pipeline to the evacuation channel. The pumping channel consists of a pumping unit consisting of a pump and two two-way valves mounted on a stand, and a container with pressure and temperature sensors and a valve. A test channel is connected to the pumping pipeline, consisting of at least two valves and two fittings.

EFFECT: invention makes it possible to work with environmentally hazardous gas products under high pressure.

5 cl, 5 dwg

Description

The invention relates to the storage and disposal of environmentally hazardous gas products.

A device for cleaning and storing radioactive waste is known (RF patent No. 2312414; IPC G21F 5/00; published 10.12.2007 Bull. No. 34), containing a container consisting of a cast metal body and a lid. The container is equipped with energy-absorbing deformable elements. Inside the container there is a filter filled with an ion-selective sorbent, divided throughout the volume into sections in height and radius. A sealing plug with a gripping element in the form of a fungus is installed in the filter neck. The walls of the container are thick enough to provide protection against radiation and mechanical damage. Energy-absorbing deformable elements are made in the form of annular grooves and a protective casing. The container body is provided with a shoulder in the upper part, a ring is attached to the bottom, and a centering spacer is installed on the lid.

The use of this device makes it possible to obtain an environmentally friendly filtrate, reduce the volume of liquid radioactive waste and provide protection from its own radiation and mechanical damage during transportation.

The disadvantage of this device is that it is not intended for the storage of environmentally hazardous gas products.

A technical solution for a device for filling, systems and methods for transferring hazardous waste into a sealed container is known (RF patent No. 2567371; IPC G21F 5/12, publ. 10.11.2015 Bull. No. 31). This technical solution relates to the storage and disposal of hazardous waste such as calcined material. In certain embodiments, the system comprises a filling port having a valve body that has a distal end and an outer surface. At the same time, the outer surface in the vicinity of the distal end is made so as to hermetically attach the valve body to the inner surface of the filling channel of the container with the possibility of removal.

In some embodiments, systems, methods, and devices are provided for the storage and/or disposal of hazardous waste, both solid and liquid (a modular system consisting of two or more chambers).

The disadvantage of all versions of the system is that it does not provide for the entry of environmentally hazardous gas products into the container through the filling channel for storage and disposal.

The task is to create a reusable complex that allows pumping environmentally hazardous gas products under high pressure.

The technical result achieved by using the present invention is the possibility of:

- work with highly toxic substances;

- work with environmentally hazardous gas products under high pressure;

- installation of several containers to increase the volume of storage of environmentally hazardous gas products;

- remote work;

- remote monitoring of the state of containers with environmentally hazardous gas products.

To solve this problem and achieve a technical result, a complex for pumping and storing environmentally hazardous gas products is claimed, including a valve block consisting of three valves: "inlet", "outlet" and "pumping", which are placed on a plate and connected to each other by a tee pipeline . The valve block separates the bleed channel into an inlet pipeline and an outlet pipeline. The inlet pipeline is hermetically coupled to the bleed device of the container containing gaseous products under high pressure. The valve block is connected by means of an evacuation pipeline to the evacuation channel. The pumping channel consists of a pumping unit consisting of a pump and two two-way valves mounted on a stand and a container with pressure and temperature sensors and a valve. A test channel is connected to the pumping pipeline, consisting of at least two valves and two fittings. The container is made in the form of a cylinder with two elliptical bottoms, one of which has a hatch hermetically sealed with a lid and branch pipes with holes. There may be several containers, each of them having a valve connected by a pipeline to the container fitting and connected by a tee and pipelines to a two-way valve. Valves and two-way valves are both manual and electrically operated. The pumping and storage complex is equipped with a remote control and monitoring system.

Due to the fact that the process of filling and monitoring the state of containers takes place remotely, as well as the use of radiation-resistant materials in the design of the pumping complex, it allows working with highly toxic substances.

The pumping and storage complex is connected through a bleed channel made of a material designed to operate under increased pressure to a container containing environmentally hazardous gas products under increased pressure. With the “pump out” valve closed and the “inlet” and “outlet” valves open, the gas flow is directed to the outlet pipeline. When the “outlet” valve is closed and the “inlet” and “pump out” valves are open, the gas flow is directed through the pumping channel to the containers. When the “inlet” valve is closed and the “pumping out” and “outlet” valves are open, the gas flow is directed from the pumping channel to the outlet pipeline.

Depending on the volume and pressure of environmentally hazardous gas products in the tank, the required number of containers is selected for the subsequent storage of gas products and reducing their activity to an environmentally safe level. The number of containers is selected from the condition that the excess pressure in the container after pumping environmentally hazardous gas products from the tank does not exceed atmospheric pressure. Additional containers are connected using tees and can be used independently of each other.

The valves and two-way valves have an electric drive that allows remote operation.

The presence of pressure and temperature sensors installed in containers allows for remote monitoring of the state of containers with environmentally hazardous gas products.

In FIG. 1 shows a complex for pumping and storing gaseous products; in fig. 2 shows the pumping unit, view A in Fig. one; in fig. 3 shows element B in FIG. one; in fig. 4 shows a valve block, element B in FIG. one; in fig. 5 shows a diagram of a gas complex for pumping and storing gaseous products, where 1 is a tank, 2 is a bleed channel, 3 is a valve block, 4 is an inlet pipeline, 5 is an outlet pipeline, 6, 26, 28 are valves, 7 is a tee pipeline, 8 - pumping unit, 9 - pump, 10 - two-way valve, 11 - stand, 12 - adapter plate, 13, 14, 15, 16, 25, 33 - pipeline elements, 17 - tee, 18 - container, 19 - neck, 20 - cover, 21 - branch pipe, 22 - temperature sensor, 23 - pressure sensor, 24 - fitting, 27 - test channel, 29.30 - fitting, 31 - pumping channel, 32 - pumping pipeline.

The complex for pumping and storing gaseous products is docked to tank 1 and consists of the following components:

- bleed channel 2, divided by valve block 3 into inlet pipeline 4, connected to tank 1, and outlet pipeline 5. Valve block 3 consists of three valves 6 with manual and electric drive, and marking "inlet", "outlet" and "pumping out". The valves are interconnected by means of a tee pipeline 7;

- pumping unit 8, consisting of a pump 9, two two-way valves 10 marked "1" and "2", having a manual and electric drive, a stand 11, on the lower tier of which the pump 9 is installed, and on the upper tier, through the adapter plate 12, two-way valves 10. A two-way valve 10 marked "1" is connected by a pipeline element 13 to the "outlet" fitting of the pump 9, and a pipeline element 14 is connected to a two-way valve marked "2". The two-way valve 10 marked "2" is connected by a pipeline element 15 with the "inlet" fitting of the pump 9, and a pipeline element 16 with a tee 17;

- container 18, which has a neck 19, hermetically sealed with a lid 20 and three nozzles 21, in which a temperature sensor 22, a pressure sensor 23 and a fitting 24 are hermetically installed, connected by means of a pipeline element 25 to a valve 26;

- test channel 27, consisting of two valves 28, fitting 29 for connecting equipment for monitoring the tightness of the complex and fitting 30 for connecting to the process pneumatic line;

- pumping channel 31, consisting of pumping pipeline 32, pumping unit 8, test channel 27 and container 18;

- an element of the pipeline 33 connecting the tee 17 with the valve 26.

The operation of the complex for pumping and storing gaseous products is carried out as follows:

a) depending on the volume and excess pressure of environmentally hazardous gas products in the container 1, choose the number of containers 18 required for pumping and temporary storage;

b) container 18 is evacuated in the following sequence:

- the valve 6 marked "Inlet" of the valve block 3 is moved to the closed position;

- valves 6 marked "Exit" and "Pumping out" of the valve block 3 and valve 26 are transferred to the open position;

- two-way valve 10 marked "1" is transferred to a position in which the pipeline element 13 and the pumping pipeline 32 communicate;

- a two-way valve 10 marked "2" is transferred to a position in which the pipeline element 15 and the pipeline element 16 communicate;

- the pump 9 is started and the container 18 is evacuated, while the vacuum control is carried out using the pressure sensor 23;

- after reaching the required vacuum in the container 18, the pump 9 is turned off and the valve 26 is moved to the closed position.

c) pump out environmentally hazardous gas products from tank 1 to container 18 in the following sequence:

- two-way valve 10 marked "1" is transferred to a position in which the pumping pipeline 32 and the pipeline element 14 communicate;

- a two-way valve 10 marked "1" is transferred to a position in which the pipeline element 14 and the pipeline element 16 communicate;

- the valve 6 marked "Exit" of the valve block 3 is transferred to the closed position;

- valve 6 marked "Input" and "Pumping out" of the valve block 3 and valve 26 are transferred to the open position;

- remotely open the shut-off valve of the tank 1 bleed device, while due to the pressure difference, environmentally hazardous gas products from the tank 1 flow by gravity into the container 18;

- control the pressure in the container 18 pressure sensor 23;

- valve 6 marked "Inlet" of valve block 3 and valve 26 are moved to the closed position;

d) after reducing the activity of environmentally hazardous gas products to an environmentally safe level, they are pumped into the atmosphere in the following sequence:

- the valve 6 marked "Inlet" of the valve block 3 is moved to the closed position;

- two-way valve 10 marked "1" is transferred to a position in which the pipeline element 14 and the pumping pipeline 32 communicate;

- two-way valve 10 marked "2" is transferred to a position in which the pipeline element 14 and the pipeline element 16 communicate;

- valve 6 marked "Exit" and "Pumping out" of the valve block 3 and valve 26 are transferred to the open position;

- pump 9 is started and environmentally hazardous gas products are pumped out of container 18.

A prototype of a complex for pumping and storing environmentally hazardous gas products has been developed, consisting of a pumping unit, a pipeline and containers. The number of containers depends on the volume and pressure of environmentally hazardous gas products.

The containers are made in the form of a cylindrical vessel with elliptical bottoms, one of which is hermetically sealed with a lid. The volume of one container is 12.3 m ³ . The main structural material of the container Steel 09G2S-GS GOST 19281-2014. For ease of movement, the container is mounted on wheelsets, with a track width of 0.75 m. On the elliptical bottom, on the side of the cover, there are three branch pipes for connecting temperature sensors, pressure sensors and a pumping unit.

The main part of the pipeline is made of Basalt Plus Ekoplastik (WAVIN) polypropylene pipes.

The pumping unit consists of remote valves, two-way remote valves, a pump and pipelines.

The pump and two-way remote valves are installed on a support made in the form of a steel two-tier structure and are interconnected using pipelines.

The pump is a scroll pump with a power of 0.4 kW and a pumping speed of 250 l/min.

Claims (5)

1. A complex for pumping out and storing gaseous products, including a valve block, consisting of three valves: "inlet", "outlet" and "pumping", which are located on the plate and connected to each other by a tee pipeline, while the valve block divides the bleed channel into the inlet pipeline, which is hermetically connected to the device for draining the tank containing environmentally hazardous gas products under high pressure, and the outlet, the valve block is connected by means of a pumping pipeline, to which a test channel is connected, consisting of at least two valves and two fittings, with a channel pumping unit, which consists of a pumping unit consisting of a pump and two two-way valves mounted on a stand, and an evacuated container with a pressure sensor, temperature sensor and a valve. 2. The complex for pumping and storing gaseous products according to claim 1, characterized in that the container is made in the form of a cylinder with two elliptical bottoms, one of which has a hatch hermetically sealed with a lid and nozzles with holes. 3. The complex for pumping and storing gaseous products according to claim 1, characterized in that there can be several containers, each of which has a valve connected by a pipeline to the container fitting and connected by a tee and pipelines to a two-way valve. 4. The complex for pumping and storing gaseous products according to claim 1, characterized in that the valves and two-way valves have both manual and electric drives. 5. The complex for pumping out and storing gaseous products according to claim 1, characterized in that the complex for pumping out and storing gaseous products is equipped with a remote control and monitoring system.

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