SU1408284A1 - Probe for sampling particles from high-temperature gas flow - Google Patents

Abstract

The invention relates to the preparation and preparation of samples for research in a power system, in particular devices for sampling from a gas stream. The aim of the invention is to provide accelerated sampling without stopping the power plant. The probe consists of a water-cooled housing 1 with a coaxial inner tube 5, in which a spring-loaded piston 9 is placed, blocking the opening of the nozzle 8 in the non-operating state. In the inner tube 5, the cup 12 is placed with the extraction tube 13 and the capsule 14 with the filter element 15. When installing the cup 12 in the inner tube 5, the piston 9 is displaced and the gases from the combustion chamber through the nozzle 8 and the side openings of the capsule 14 and The cups 12 are sucked out of the flue gas tube 13. At the same time, solid particles are deposited on the filter element 15. Fixing and locking devices are provided to prevent displacement of the glass 12 and the capsule 14. To carry out several sampling from this point, it is enough to change. capsule in a glass, 3 hp, f-ly, 3 ill. but

Description

P

one

"

J..L :: .. JL.LZ: II

fS

Z: II

S

to

17

Sh

Uw

OS 1h9

OS

I The invention relates to the preparation of I and the preparation of samples for NIN in heat and power engineering, and in particular to devices for sampling from the flow of gas.

j The purpose of the invention is to provide accelerated sampling without stopping the power plant.

FIG. 1 shows a probe for sampling particles from a high temperature gas stream, section; in fig. 2 shows section A-A in FIG. one; in fig. 3 shows a section BB in FIG. one.

The probe consists of a housing 1, equipped with a flange 2 for attachment to the combustion chamber and the inlet pipes 3 and outlet 4 of the coolant. An internal pipe 5 is coaxially mounted in the housing 1, on the working end of which a plug 6 is installed, which is connected by a threaded connection to the internal pipe 5. In the space between the housing 1 and the internal pipe

a part of the notch, the diameter of which corresponds to the diameter of the flue gas tube 13, and the latch 19 in position with the handle.

The probe works as follows. Fully assembled probe with gas outlet tube removed 13 is attached to

10 help flange 2 to the camera body

Combustion working end inside. Water cooling is included. Water is supplied through pipe 3, and drainage is through pipe 4. After

15 of this, a combustion chamber is activated. During combustion in the initial position, the piston 9 closes the opening of the socket 8 under the action of the spring 10. The piston stroke is fixed

20 with a cable 11. In this position, the piston 9 closes the gas intake port of the pipe 8 from the combustion chamber. With the need to take a test, the capsule 14 is charged with filter 5 two longitudinal ribs 7, 25 are attached to the element 15 (this can be located at an angle of 90 to one another. This arrangement of the ribs 7 is chosen to facilitate the assembly of the probe, yes, since pipe 8 for the extraction of gas flow, the length of which exceeds the distance between the housing 1 and the inner-pipe 5. At the working end in the ribs 7 there are holes (not shown).

and in advance), then install the glass 12, with the lateral ot30

go with

The versatility of the capsule 14 and cup 12 som is placed using a fixing device consisting of two protrusions on the capsule and two notches on the canoe (not shown). After this, a cannon 12 with a vapor pipe 13 is installed in the inner pipe

A piston 9 is placed in the inner tube 5. In this case the piston 9 is shifted to 40

spring-loaded from the side of the plug 6 by the spring 10. Between the plug 6 and; the piston 9 fixes the cable 11, the length of which provides the output of the piston 9: to the position when its middle closes the opening of the nozzle 8. In the inner tube 5 the bucket 12 is placed with the possibility of removing -. a gas outlet tube 13 attached to it and a capsule 14 with a filter element 45 in the form of quartz or kaolin wool. The cup 12 and the capsule 14 are provided with side holes. An additional flange 16 is rigidly fixed at the outlet end of the venting tube 13, and there is a retainer 17 in the form of a protrusion, which is aligned with a recess at the end of the inner tube 5. To secure the venting tube 13, a stopping device is made at the output end of the body 1 which consists of a handle 18, hinged at the end of the housing 1 and having in the middle

50

55

to the working end. The axes of the openings of the nozzle 8 and the cup 12 with the capsule 14 are aligned with the aid of the retainer 17: the protrusion of the additional flange 16 is aligned with the notch on the end of the inner tube 5. From the outside, the flange 16 abuts against the handle 18 of the locking device. The gas evacuating tube 13 is connected to a gas suction system, including a compressor and a gas meter with a thermometer, and a sample is taken. After the gas vent is removed, the tube 13 with the capsule 14 and the cup 12 is removed from the probe, the piston 9 under the action of the spring 10 blocking the opening of the socket 8. The capsule 14 is removed from the cup 12 and an analysis of solid particles deposited on the filter element 15 is carried out. repeat sampling; sampling is repeated; only a different capsule with a filter element is used.

part of the notch, the diameter of which corresponds to the diameter of the flue pipe 13, and the latch 19 position. handles.

The probe works as follows. The fully assembled probe with the removed vent tube 13 is attached at

flange 2 to the camera body

Combustion working end inside. Water cooling is connected. Water is supplied through pipe 3, and discharging through pipe 4. After

This is triggered by a combustion chamber. During combustion in the initial position, the piston 9 closes the opening of the socket 8 under the action of the spring 10. The piston stroke is fixed

cable 11. In this position, the piston 9 closes the gas intake port of the pipe 8 from the combustion chamber. With the need to take a sample, the capsule 14 is charged to the filter beforehand), then it installs a cup 12, with the lateral

go with

The versts of the capsule 14 and cup 12 are mounted using a locking device consisting of two projections on the capsule and two notches on the cup (not shown). After this, a cup 12 with a vapor tube 13 is installed in the inner tube 5.

0

five

0

five

to the working end. The axes of the openings of the nozzle 8 and the cup 12 with the capsule 14 are aligned with the aid of the retainer 17: the protrusion of the additional flange 16 is aligned with the notch on the end of the inner tube 5. From the outside, the flange 16 abuts against the handle 18 of the locking device. The gas evacuating tube 13 is connected to a gas suction system, including a compressor and a gas meter with a thermometer, and a sample is taken. After the gas vent has been removed, the tube 13 with the capsule 14 and the cup 12 is removed from the probe, the piston 9 under the action of the spring 10 blocking the opening of the socket 8. The capsule 14 is removed from the cup 12 and the analysis of solid particles deposited on the filter element 15 is carried out. With repeated sampling of solid particles, sampling is repeated, using only another capsule with a filter element.

The advantages of the proposed probe in comparison with the known one are the possibility of removing the capsule after taking the germ without stopping the process. burning in the power plant, reducing the time required to prepare for sampling, reducing the labor intensity and operation of extracting the capsule from the probe, as well as the ability to take several samples from one point and with the same operating mode of the unit.

Claims (4)

1. A probe for sampling particles from a high-temperature gas flow, comprising a cooled body equipped with a flange, a head, cut-offs for supplying and discharging coolant, an opening for sampling a gas flow perpendicular to the longitudinal axis of the body, and a capsule with a filter element installed in a glass with a gas discharge tube, which is also distinguished by the fact that, in order to ensure accelerated sampling without stopping the power plant, the casing is equipped with a coaxially arranged inner tube equipped with a head at the working end shkoy and placed inside the tube a piston with a spring-loaded storouy stub and is bonded about five 0 five 0 A flexible element with a length equal to the stroke of the piston before the gas flow inlet closes with it, the capsule and the cup are made with side coaxial holes and placed in the inner tube with the possibility of their removal, and the outlet end of the venting tube is provided with a fixed additional flange. 2. The probe according to claim 1, characterized in that the upper part of the additional flange and the end of the inner tube are provided with a retainer for positioning the glass with the capsule in the inner tube, 3. Probe according to claim 1, characterized in that the housing is provided with a locking device in the form of a handle, one end of which is hinged at its end, and the central part is provided with a notch with a radius equal to the diameter of the venting tube, and a locking handle position. 4. Probe according to claim 1, characterized in that two longitudinal ribs are installed in the gap between the housing and the inner tube at an angle of 90 to each other over the entire length, the probe, and at the working end there are holes in the ribs. FIG. 2 Phi2,3 P nineteen