SU1320407A1 - Reversible percussive mechanism for working wells - Google Patents

Abstract

The invention relates to the mining industry and allows increasing the speed of the extraction of the mechanism from the well by increasing the impact energy transmitted by the striker 2 to the hull (K) I. The mechanism includes K 1 forming with the striker 2 with the piston 3 the explosive, non-oil 6 cameras. The pneumatic accumulator has two tiers (P) 7, 8, connected by a pneumatic line 24 with a crane 25. One of them, P 7, is located on the opposite side of the slaughter, and the other, 8, is formed by a brisk 2 n K 1 from the side of the bottom. In K I, on the opposite side of the side, there is a three-position distribution sleeve 28. The distribution node with control P 10 is made with an elastic back-regulating element 9. Moreover, P 10 is connected with chambers 5, 6 through check valves (OK) 15 and 16 and with a sleeved highway 22 through the sleeve 28. As K I moves forward, fluid from chamber 5 enters P 10 and OK 16 overlaps. There is a platoon of the mechanism. At the end of his striker 2 coeepnjaeT working stroke. To change the direction "(L 23 23 00 tsD O 4 O

Description

hitting the striker 2 is set in the upper position. After the gas is displaced in the P 8, the sleeve 28 is installed in the upper position. When removing the mechanism of fluid

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The invention relates to the mining industry and can be used to create impact devices for the formation of a well in the ground.

The purpose of the invention is to increase the speed of extraction of the mechanism from the well by increasing the impact energy transmitted by the die to the body.

The drawing shows a reversible percussion mechanism.

The reversible percussion mechanism for boreholes includes a housing 1, which is formed with a die 2, having a piston 3 and a groove 4, charging-5 and an overflow 6 chamber located on the side opposite to the bottom, a cavity 7 of the pneumatic accumulator of the forward stroke and an additional cavity 8 on the side of the pneumatic accumulator of the reverse stroke, located on the side of the bottom.

The distribution unit is made with a cylindrical elastic shut-off and regulating element 9, over which the control cavity 10 is located, is connected through the aperture 1 1 with the control groove 12. The control groove 12 has the ability to connect to chambers 5 and 6 via hydrolines 13 and 14 , reverse valves 15 and 16, throttles 17 and 18, respectively.

On the striker 2 there are slots 19 and an annular groove 20 for connecting the chambers 5 and 6 to each other.

In case 1 there are pompous and drainage lines 21 and 22, consisting of lines 23 and 24, pneumatic lines with a crane 25, interconnecting cavities 7 and 8 of pneumo-accumulators, hydrolines 26 and 27 of the control, spring-loaded sleeve 28. For the control of the sleeve 28 there is a rope 29.

The proposed reversible percussion mechanism when moving the body forward works as follows.

The cavity 7 of the pneumatic accumulator of the forward stroke is filled with gas, the sleeve 28 is in the lower (according to the drawing) position and allows the control line 26 to be connected to the main 22, which acts as a drain.

From line 21, which acts as a pressure pump, fluid is supplied to the platoon engine.

served at 10, and OK 15 overlaps. The mechanism is cocked by pressure. At the end of the platoon, the working stroke of the striker 2 occurs. The cycle is repeated. 1 hp f-ly, 1 ill.

chamber 5. Through throttle 17, non-return valve 15, hydroline 13, the liquid enters the control bore 12, through the opening 11 - into the control cavity 10. The check valve 16 closes and prevents the flow of liquid into the overflow chamber 6. The elastic element 9 is deformed ( is compressed) and closes the grooves 19 and the annular groove 20. Under the action of the injection pressure, the platoon is made

impact mechanism, in the cavity 7 of the pneumatic accumulator of the forward stroke, the gas is compressed.

At the end of the platoon, the slider of the control hydroline 26 through the groove 4 is connected to

a drain line 22. The pressure in the control cavity 10 drops, the elastic element 9 is deformed (expands), and the fluid flows from the charging 5 chamber into the intermediate 6 through the slots 19

and an annular groove 20. The pressure build-up in the control cavity 10 is restrained by the throttle 17. Under the action of the compressed gas in the cavity 7 of the pneumatic accumulator of the forward stroke, the head 2 makes a working stroke, making a blow to the bottom (according to the drawing)

body parts.

Further, the duty cycle is repeated. To change the direction of impacts, and, consequently, the movement of the mechanism body, it is necessary to open the valve 25 and sweat

for the rope 29, setting the sleeve 28 in an intermediate position. At the same time, the striker 2 occupies the upper (according to the drawing) position, displacing the gas from the cavity 7 of the pneumatic accumulator of the forward stroke along the pnevmoline 23 and 24 through the valve 25 into the cavity 8 of the pneumatic accumulator of the reverse stroke. At this moment, the valve 25 is closed, shutting off the flow of fluid through line 21, having pulled the rope 29, the sleeve is set to the upper position to allow the connection of the hydroline 27

control with hydroline 21.

For the mechanism to work in the opposite direction, i.e. when extracting the mechanism from the well, it is necessary to feed the working fluid 9 into the line 22, which performs the pressure function.

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From line 22, fluid flows into chamber 6. Through choke 18, non-return valve 16, hydroline 14, fluid enters the control groove 12, through opening 11 into the control cavity 10. Non-return valve 15 closes and prevents liquid from entering the chamber 5. The elastic element 9 is deformed (compressed) and closes the grooves 19 and the annular groove 20. Under the action of the injection pressure, the percussion mechanism is cocked, in the cavity 8 of the pneumatic accumulator of the reverse stroke, the gas is compressed.

At the end of the charging platoon, the control hydrolini 27 through the groove 4 is connected to the drain line 21 in this mode. The pressure in the control cavity 10 drops, the elastic element 9 deforms (expands), and the liquid flows from chamber 6 into chamber 5 through the grooves 19 and the annular groove 20. The pressure build-up in the control cavity 10 is restrained by the throttle 18. Under the action of the compressed gas in the cavity 8 of the backflow pneumatic accumulator, the head 2 performs a working stroke, striking the upper part of the body.

Further, the duty cycle is repeated.

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Form u w Invention

Claims (2)

1. A reversible percussion mechanism for boreholes, comprising a housing that, with a piston head, has a piston, a plunging and overflow chambers and is located on the side opposite to the bottom of the pneumatic accumulator, a distribution node with a control cavity, pressure-drain lines, that, in order to increase the speed of extraction of the mechanism from the well by increasing the impact energy, which is not repaired by the striking case, the mechanism is equipped with a three-position distribution located in the case on the side opposite to the face A separate sleeve, two check valves and an additional pneumatic accumulator cavity formed by the striker and the housing from the bottom side, the distribution node being made with an elastic shut-off regulating element, the control cavity of the distribution node being connected to the charging and overflow chambers K.Papany, and with a drain line - through the distribution sleeve. 2. The mechanism of claim I, characterized in that. that the cavities of both pneumoaccumulators are interconnected with a tap with a nonvolumine line.