RU168648U1 - SELECTIVE PRESSURE DEVICE, DRAINAGE FOR DUST PIPELINE - Google Patents

Abstract

A selective pressure and vacuum device for a dust pipe (hereinafter referred to as a selective device) is intended for continuous pressure selection, a vacuum of a measured dust pipe medium and the transfer of its parameters to the control and measuring equipment of a pulse line of a process automation system.

Impulse line - pipe wiring connecting the selective device to the control and measuring equipment - a device, sensor or regulator.

The technological environment of the dust pipe - the dust-gas mixture is predisposed to dust formation and causes sticking and precipitation on the sensitive organs of the control and measuring equipment, which leads to inaccurate readings and shorten its life.

The design of the claimed utility model allows not only to carry out continuous selection of pressure and rarefaction of the measured dust conduit, but also to separate suspended particles of coarse dust and fine-grained material.

The selection device can be used in various industries, including energy - in pulverized coal thermal power plants.

Known commercially available selective devices for measuring pressure and vacuum in technological pipelines, which are installed in automation systems in various industries.

The medium to be measured is boiler furnace smoke, dust piping gas with a high content of fine solid particles.

Pressure selection of such media is carried out at an angle of 45 ° to the flow direction through a dust collector located in the immediate vicinity of the dust pipe wall.

The technical tasks to be solved by the claimed utility model are:

- ease of manufacture and maintenance;

- compactness;

- improving the quality of cleaning the mixture from coarse dust and fine-grained material.

The selection device operates under the following parameters of the working environment:

- temperature up to +80 degrees;

- pressure up to 0.1 MPa.

The inventive utility model does not require expensive materials and special energy costs, while the use of this design increases the life of the instrumentation, its reliability and sensitivity of measurements.

The selection device contains a vertical cylindrical body with a nozzle for supplying the measured dust pipe medium - a dust and gas mixture into its internal cavity, with a lid having a central hole with a fitting for the outlet of the cleaned mixture, with a bottom and a fitting with a union nut for collecting and removing coarse dust and fine-grained material.

The selection device operates as follows.

The dust-gas mixture to be sampled, coming from the dust pipe through the supply pipe of the measured medium, enters the internal cavity of the body of the selective device, where the mixture is cleaned of coarse dust and fine-grained material.

The dust-gas mixture is cleaned by the precipitation of coarse dust and fine-grained material under the action of gravity with a sharp decrease in speed in the inner cavity of the body of the selective device, since its cross section is many times larger than the cross-section of the medium inlet pipe.

Coarse dust and fine-grained material settles on the inside of the bottom of the selective device.

The cleaned mixture is removed from the selective device through a fitting in the lid, the lower edge of the tail of which is located below the edge of the hole of the supply pipe of the dust-gas mixture.

This allows you to cut off the supply zone of the dust and gas mixture from the intake of the purified mixture and to improve the quality of cleaning the mixture.

The bottom of the selective device is cleaned of dust through the lower fitting with a union nut.

Installation of the selected device is as follows.

The selection device is placed on straight sections of pipelines, at the maximum distance from locking devices, elbows and other hydraulic resistances.

The selection device is welded to the embedded structure of the dust pipe - a fitting, one end of which is welded to the hole in the dust pipe, where pressure is measured.

The other end of the fitting has a cylindrical or tapered thread, on which, depending on the purpose of the selective device, a shut-off valve or valve is installed.

Next to the locking device is connected to the pipe 8 of the selective device for entering the measured medium of the dust pipe.

At the end of the installation, the strength and tightness of the selected device is checked, as a rule, when testing a dust pipe under pressure.

The selection device can be operated in various climatic zones.

The appropriate climatic performance and resistance to the industrial atmosphere is ensured by applying protective and heat-insulating coatings after installation according to the dust pipe protection scheme.

Description

A selective pressure and vacuum device for a dust pipe (hereinafter referred to as a selective device) is intended for continuous pressure selection, a vacuum of a measured dust pipe medium and the transfer of its parameters to the control and measuring equipment of a pulse line of a process automation system.

Impulse line - pipe wiring connecting the selective device to the control and measuring equipment - a device, sensor or regulator.

The technological environment of the dust pipe - the dust-gas mixture - is predisposed to dust formation and causes adhesion and precipitation on the sensitive organs of the control and measuring equipment, which leads to inaccurate readings and shorten its life.

The design of the claimed utility model allows not only to carry out continuous selection of pressure and rarefaction of the measured dust conduit, but also to separate suspended particles of coarse dust and fine-grained material.

The selection device can be used in various industries, including energy - in pulverized coal thermal power plants.

Known commercially available selective devices for measuring pressure and vacuum in technological pipelines, which are installed in automation systems in various industries.

The medium to be measured is boiler furnace smoke, dust piping gas with a high content of fine solid particles.

The pressure is taken from such media through a dust collector located in the immediate vicinity of the dust pipe wall.

The technical tasks to be solved by the claimed utility model are:

- ease of manufacture and maintenance;

- compactness;

- improving the quality of cleaning the mixture from coarse dust and fine-grained material.

The selection device operates under the following parameters of the working environment:

- temperature up to +80 degrees;

- pressure up to 0.1 MPa.

The inventive utility model does not require expensive materials and special energy costs, while the use of this design increases the life of the instrumentation, its reliability and sensitivity of measurements.

The selection device comprises a vertical cylindrical body with a nozzle for supplying a measured dust-pipe medium - a dust-gas mixture - into its internal cavity, with a lid having a central hole with a fitting for the outlet of the cleaned mixture, with a bottom and a fitting with a union nut for collecting and removing coarse dust and fine-grained material .

The selection device operates as follows.

The dust-gas mixture to be sampled, coming from the dust pipe through the supply pipe of the measured medium, enters the internal cavity of the body of the selective device, where the mixture is cleaned of coarse dust and fine-grained material.

The dust-gas mixture is cleaned by the precipitation of coarse dust and fine-grained material under the action of gravity with a sharp decrease in speed in the inner cavity of the body of the selective device, since its cross section is many times larger than the cross-section of the medium inlet pipe.

Coarse dust and fine-grained material settle on the inside of the bottom of the selective device.

The cleaned mixture is removed from the selective device through a fitting in the lid, the lower edge of the tail of which is located below the edge of the hole of the supply pipe of the dust-gas mixture.

This allows you to cut off the supply zone of the dust and gas mixture from the intake of the purified mixture and to improve the quality of cleaning the mixture.

The presence of the specified fitting with a long tail distinguishes the design of the claimed utility model from commercially available selected devices.

The bottom of the selective device is cleaned of dust through the lower fitting with a union nut.

The essence of the technical solution is illustrated by the drawing.

In FIG. 1 shows a general view of a select device.

The selection device consists of a housing 1, a cover 2, equipped with a sealing ring 3 and fixing connections - studs, washers, nuts 4, 5, 6.

The housing consists of a shell 7, an inlet pipe 8, a flange 9, a bottom 10 and a fitting 11.

The fitting 11 is welded into the bottom 10 and is equipped with a union nut 12 and gasket 13.

Coarse dust and fine-grained material are periodically removed through an opening in the nozzle 11.

The flange 9 and the bottom 10 are welded respectively to the upper and lower parts of the shell 7.

The inlet pipe 8 is welded into the upper part of the housing 1 - perpendicular to the tail of the fitting 14.

The fitting 14 is equipped with a nipple 15, a sealing gasket 16 and a union nut 17.

The fitting 14 is welded to the cover 2 to select the pressure of the cleaned dust and gas mixture and is located in the center of the housing 1.

Installation of the selected device is as follows.

The selection device is placed on straight sections of pipelines, at the maximum distance from locking devices, elbows and other hydraulic resistances.

The selection device is welded to the embedded structure of the dust pipe - a fitting, one end of which is welded to the hole in the dust pipe, where pressure is measured.

The other end of the fitting has a cylindrical or tapered thread, on which, depending on the purpose of the selective device, a shut-off valve or valve is installed.

Next to the locking device is connected to the pipe 8 of the selective device for entering the measured medium of the dust pipe.

At the end of the installation, the strength and tightness of the selected device is checked, as a rule, when testing a dust pipe under pressure.

The selection device can be operated in various climatic zones.

The appropriate climatic performance and resistance to the industrial atmosphere is ensured by applying protective and heat-insulating coatings after installation according to the dust pipe protection scheme.

Claims (1)

A selective pressure and rarefaction device for a dust pipe, comprising a vertical cylindrical body with a nozzle for supplying the dust and gas mixture into its internal cavity, a lid having a central hole with a fitting for the outlet of the cleaned mixture, a bottom with a fitting with a union nut, characterized in that the cleaned mixture is removed from the selected pressure and rarefaction devices for a dust pipe through a fitting in the cover, the lower edge of the tail of which is located below the edge of the hole of the supply pipe of the dust and gas mixture.

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