RU217187U1 - INSTALLATION FOR INFLATION AND AUTOMATIC MAINTENANCE OF PRESSURE IN VGU - Google Patents

Abstract

The utility model relates to devices used in the gas industry when performing work on depressurization and repair of pipelines, technical devices and equipment within the linear part or compressor station.

The objective of the utility model is to reduce the potential hazard during high-risk work associated with the depressurization of the pipeline (technical device), as well as to reduce the labor intensity when performing inflation and subsequent pressure control in the WSU as a result of reducing the human factor.

The technical result is the ability to organize the workflow for pumping and further controlling the pressure in the WSU in a more technologically advanced way, by operating the unit in automatic mode.

The problem is solved, and the technical result is achieved by creating an installation for inflating and automatically maintaining pressure in the VGU.

The installation for inflating and automatically maintaining pressure in a temporary sealing device consists of a rack on which an electrocontact pressure gauge is mounted, which sends a signal to the electromagnetic valve to open or close it, ball valves, a safety valve, an inlet pressure gauge, a power source with an electrical circuit.

Description

The utility model relates to devices used in the gas industry when performing work on depressurization and repair of pipelines, technical devices and equipment within the linear part or compressor station.

When carrying out work of increased danger on gas equipment, to prevent the entry of a gas-air mixture into the place of work, temporary sealing devices (hereinafter referred to as VGU) are installed in the internal cavity of the gas pipeline. After installing and inflating the VGU to the pressure indicated in the VGU passport, the pressure in it should be monitored at least every 2 hours with a log entry. The pressure control in the VGU is controlled using a special manometric kit.

The disadvantages of this method are:

- connection of the manometric set to the VGU hose with its subsequent removal after measurement;

- significant time of pressure measurement;

- potential injury hazard when connecting/disconnecting the gauge kit.

Known device "Manometric kit" MK-1 (SPTA 00.01.P) to control the pressure of sealing devices [1].

The disadvantages of this device are:

- the impossibility of stationary installation of the device when using several VGU;

- the inability to control pressure at some distance from the device;

- in an emergency, there is no possibility to automatically pump the VSU.

The objective of the utility model is to reduce the potential hazard during high-risk work associated with the depressurization of the pipeline (technical device), as well as to reduce the labor intensity when performing inflation and subsequent pressure control in the WSU as a result of reducing the human factor.

The technical result is the ability to organize the workflow for pumping and further controlling the pressure in the WSU in a more technologically advanced way, by operating the unit in automatic mode.

The problem is solved, and the technical result is achieved by creating an installation for inflating and automatically maintaining pressure in the VSU.

The claimed installation for inflating and automatically maintaining pressure in the VSU is shown in Fig. 1.

The installation for inflation and automatic maintenance of pressure in the VSU consists of a rack on which the device is mounted, a fitting 1 for connecting an excess air pressure hose, a ball valve 2, an inlet pressure gauge 3, an electromagnetic valve (EMC) 4, a safety valve 5, a bleed line air 6, electric contact pressure gauge (EKM) 7, ball valve 8, fitting 9 for connecting a hose from a temporary sealing device, pressure indicator 10, telescopic support 11, power source 12, cable line 13.

The operation of the installation for inflating and automatically maintaining pressure in the VGU is carried out as follows.

The installation is located directly next to the installation site of the VGU. The hose from the source of excess pressure (compressor, compressed air cylinder, etc.) is connected to fitting 1. The operation of the ECM and EMC is carried out from a 12-volt power source and an electrical circuit made in an explosion-proof design and mounted on the installation rack. When the ball valve 2 is opened at the inlet to the unit, air through the open EMC 4 enters the fitting 9 at the outlet of the unit and the pumping of the VGU begins. As soon as the pressure in the VGU reaches the set value set on EKM 7, EMK 4 will close, which in turn will block the flow of excess air into the unit. If there is a decrease in pressure in the VGU below the one set on the EKM 7, then the signal to open the EMK 4 will pass and the algorithm will be repeated.

Thus, the unit is capable of automatic pumping of the WGU as the pressure in the WGU itself decreases, and the safety valve 5 will prevent pumping of the WGU. When performing work at some distance, it will not be difficult to control the pressure on the color indicator 10, which can be extended vertically using a telescopic support 11.

After the repair is completed, the device is dismantled in the reverse order.

The essential distinguishing features of the device claimed are:

- the device is made on a single rack, which makes it easy to transfer the device, and its installation at the work site will be minimal;

- the introduction of this installation allows to reduce the human factor in production, as well as to minimize the time for installation and further pressure control.

The claimed essential distinguishing features are unknown to us from patent and scientific and technical information and, in accordance with this, are "New".

For the claimed device, working drawings were made and a prototype was made, which was successfully tested at the Vuktyl LPUMG of Gazprom Transgaz Ukhta LLC. In this regard, the device declared by us meets the criterion of "Industrial applicability".

List of sources:

1. Manometric device MK-1 (ZIP 00.01.P) [Electronic resource]. Access mode: www.remneftegaz.ru/catalog/411/426.

Claims (1)

The installation for inflating and automatically maintaining pressure in a temporary sealing device consists of a rack on which an electrocontact pressure gauge is mounted, which sends a signal to the electromagnetic valve to open or close it, ball valves, a safety valve, an inlet pressure gauge, a power source with an electrical circuit.

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