SU1252482A1 - Flexible seal for blast holes and wells - Google Patents

Description

The invention relates to the mining industry, in particular to devices for sealing boreholes and boreholes and measuring with them the gas release from the sealed interval, and can be used to perform methods for predicting and controlling the stress state and outburst hazard of a coal seam from the mine workings.

The purpose of the invention is to expand the scope and improve the technological effectiveness of the sealing process by reducing the time to perform non-productive operations. I

FIG. 1 depicts suppose1) 1st

sealer, general view; in fig. 2 is a section A-A in FIG. 1,

The bore-hole and hole hermeticizer contains a flexible sending sleeve 1, made of reinforced high-pressure hose (for example, with an outer diameter of 36 mm, used in high-pressure hydraulic systems of mechanized coal-mining complexes), with special nuts 2 and clamps 3 to the bottomhole hole ( perforated gas intake pipe 4, on which the fixed thrust washer 5 is fixed by welding and which is loosely attached to the sealing element 6 (for example, rubber The gas shutter ZG-1) and the movable thrust washer 7. Through the movable thrust washer 7 (Fig. 2), the longitudinal slits 8 in the gas intake pipe and the hole in the clamp 9 pass through the bolt-rod 10 with countersunk g. washer Grover 11. The other (wellhead) end of the delivery sleeve 1 is connected with a nipple 12, which has a fitting 13 for venting gas and connecting a gas flow meter (for example PG-2MA) and a handle, using the same special nut 2 and collar 3 -stop 1A. The second nipple 12 is connected with a trapezoidal thread with a movable sleeve 15, which moves along the thread by turning the knob 16. At the end of the sleeve 15, there is an upset bearing 17 and a sealing (sealing) gasket 18, closed by a cover 19. A round rod passes through the inner sleeve of the thrust bearing 17 20

ten

2524822

from flat heads; oh and carving. The rod 20 is fixed with a flat head by abutment into the movable holder of the thrust bearing, and the end is screwed into the special tack 21. The flexible cable-rod 22, passed through the flexible send-off sleeve 1, is rigidly (percussion) connected at one end in the bottom-hole part of the transfer sleeve tack 9, and the other in the mouth of the part - with tack 21.

The flexible hole and hole sealer works in the following way. To perform measurements of the initial outgassing rate, for example, when predicting outburst danger, a flexible reinforced sleeve 1 is sent by hand to the installation of the sealing element 6 at a depth of 3.5–4.0 m into the drilled outfall from the mine working on the coal seam 3.5–4.0 m in depth. stipulated interval. Depth control is carried out visually by the risks applied along the entire length of the brimming tube every 50 mm.

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20

25

0

five

0

five

0

five

The sealing of the hole is made by a quick rotation of the 15-knob with the knob-knob 16 with simultaneous locking of the knob 14. When the knob-knob 16 is turned clockwise, the clutch 15, moving along the trapezoidal thread to the right relative to the fixed nipple, extends the device and thus the cable rod 22, through the thrust bearing 17, the round rod 20, the clamps 9 and 21, transfers the force to the screw 10, and the latter through the longitudinally moving thrust washer 7 compresses the sealing rubber element 6, thereby sealing the measuring chamber pura due pope.rech- Nogo increase uplotne- ii diameter. The gas from the sealed interval through the perforated gas suction pipe 4 enters through the inner channel of the flexible billet sleeve 1 and the fuel pipe 12 to the nipple 13, to which a gas flow meter, for example PG-2MA, is connected to a rubber tube. Sealing is considered reliable if, when the docking needle is twitching, it is not removed from the hole or hole. After measurement

the depressurization is carried out in reverse order with the sealant removed from the hole. In this case, the weakening of the cable rod 22 as a result of movement of the coupling 15 to the left 1252A824

in leads to a longitudinal expansion of the sealing element 6 and due to its elastic properties and the restoration of the original dimensions of the diameter.

Editor A. Sabo Order 4600 / ZD

Compiled by I. Allagulov Tehred M. Khodanych

Corrector

Crash 548Subscribe

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab. D. 4/5

Production and printing company, Uzhgorod, st. Project, 4

FIG. 2

Proofreader L. Pilipenko

Claims (1)

FLEXIBLE HOSE AND WELL SEALER, containing a gas outlet fitting, a sealing element, thrust washers, a knob-handle and a perforated gas sampling tube, characterized in that, in order to expand the scope and improve the processability of the sealing process by reducing the time for unproductive operations , it is equipped with a dosing sleeve made of a reinforced high-pressure hose, a nipple, a coupling, a bearing, a flexible cable rod and a bolt-rod, and the gas intake pipe is made on with longitudinal grooves, while the downhole end of the delivery sleeve is rigidly connected to the perforated gas sampling tube and a sealing element on it, and the front movable thrust washer is installed between the sealing element and the bolt-rod passing through the longitudinal grooves of the gas sampling tube with the possibility of moving into them, and the wellhead end of the delivery sleeve is rigidly connected to the nipple on which the sleeve is movable, and the flexible cable rod is rigidly connected by grips with one horse in downhole part with a bolt-rod and a front movable thrust washer, and the other in the wellhead part - with a coupling, moreover, a thrust bearing is fixedly mounted in the coupling, in which the wellhead end of the cable-rod is fixed. SU. ,,. 1252482 Figure 1> shdits