SU977757A1 - Deep well pneumatic hammer drill - Google Patents

Description

FIELD OF THE INVENTION The invention relates to the mining industry, in particular to submersible hammers for drilling wells.

Known submersible pneumatic hammer, comprising a housing, pore blockhead with a central exhaust channel, the camera working and idling, drilling tools 1.

The disadvantage of a pneumatic hammer is that the presence of radial exhaust kaneshov leads to a decrease in the cleaning efficiency of the bottom hole drilling fines.

The closest technical solution to the proposed technical essence and the achieved result is an immersion hammer, including a housing, working and idling chambers, a distribution bush with side supply channels, in the end part of which a cavity is made, periodically communicating with the exhaust channel the tail end of the end is a striker with longitudinal channels, one of which is permanently connected with idle speed, the other with the axle box and the exhaust channel of the drilling tool GZ.

The disadvantage of the impact hammer is that the exhaust of air from the deep cavity is carried out through the side exhaust channel, which leads to radial components of the force action, which reduces the power of the impact effect on the bottomhole and reduces the impact of the exhaust stream on the drill cuttings. Ultimately, the cleaning efficiency of the bottom hole from the fines decreases, and the energy loss of its overgrinding increases.

The purpose of the invention is to increase the impact power and cleaning efficiency of the bottom, while reducing energy loss.

The goal is achieved by the fact that in a submersible pneumatic hammer,

Claims (2)

20 including housing, chambers of working and idling, distribution box with side supply channels, in the front part of which a cavity is made, periodically communicating with the exhaust channel in the tail part of the piston —block, with longitudinal channels, one of which is permanently connected to the idling chamber , OTHER with the axle box cavity and exhaust channel 30 of the drilling tool, an annular channel is made in the axle cavity of the axle box, which connects the exhaust channel of the tool with the axle box cavity. The drawing shows a punch impact longitudinal section. The submersible hammer consists of body 1, in which is placed a pin-head 2, forming in the body of the working camera 3 and 3 of the 4 stroke. The firing piston 2 has a tail part 5. In the piston-striker 2 there is a channel b, connected to the idling chamber 4, extending to the side wall of the tail 5, exhaust channel 7, having a radial outlet 8 in the tail part 5, and channel 9, also extending to the side wall of the tail section 5. The tailing part 5 of the projectile enters distribution box 10, the cavity 11 of which is connected by channel 9 to the chamber 3 of the working stroke. A radial channel 12 is formed in the side wall of the bouquet 10, which is connected to the compressed air supply, and an annular groove 13 is also made, which communicates the radial exit 8 of the exhaust channel 7 of the piston box 2 with cavity 11 And through the channel 9 with the camera 3 of the stroke. A hose is attached to the rear part of the axle 10 (not shown .. A drilling tool 14 is attached to the front of the housing 1, having a tubular valve 16 at the end in the central exhaust channel 15, periodically entering the piston 7 into the exhaust channel 7 2. Submersible blower works as follows. Compressed air from the rods and over the canal 12 of the axlebox 10 and channel b of the piston -brick 2 enters the chamber 4 of the idler. At this moment, the camera 3 of the working stroke through the channel 9, the cavity 11, the hollow groove 13, the exhaust channel with the radial outlet 8 in the drummer and the channel 15 in the tool 14 is in communication with the atmosphere. Piston-firing 2 under the action of the duplication of air makes idling. In this case, the TRETCH 13 is separated from the cavity 11 ,. stopping the communication of the chamber 3 with the atmosphere, and the channel 6 is disconnected with the channel 12, stopping the supply of compressed air to the idling chamber 4. Upon further movement of the piston-block 2 valve 16 leaves the channel 7 of the striker, air is exhausted from chamber I 4 through channel 15 of the drilling tool 14 to the bottom hole. At this point, the channel 9 communicates with the channel 12 by supplying compressed air to the cavity 11 and the chamber 3 of the working stroke. Pistonboy 2 brakes and moves to the working course. In the process of movement of the piston-block 2, channel 9 is uncoupled with channel 12, stopping the intake of air into the cavity 11 and the chamber 3 of the working xo-s yes. Upon further movement of the piston of the striker 2, the exhaust valve 16 enters channel 1, closing the exhaust air from chamber 4. At this moment, the annular groove 13 communicates with the cavity 11, and through it the channel 9 s. camera 3 working stroke. VYHL017 from chamber 3 to the bottom of the well occurs. At the end of the working stroke, the channel 6 is aligned with the channel. 12, the air begins to flow into the idling chamber 4. The bore piston strikes the tool 14. Then the cycle repeats. When using the proposed hammer, it is possible to improve the reliability of operation of the device, the wear resistance of the tear-resistant. Formula of the invention Immersion hammer, including body, working and idling chambers, distribution box with side supply channels, in the front part of which a cavity is made, periodically communicating with the exhaust channel in the tail section of the piston, its longitudinal channels, one of which It is in communication with the idling chamber, the other with the axle box cavity, and the exhaust channel of the drilling tool, characterized in that, in order to increase the power of the impact and the cleaning efficiency of the bottom hole In the present-day reduction of energy losses, an annular groove is made in the cavity of the axle box, connecting the exhaust channel of the instrument with the axle box cavity. i Sources of information taken into account in the examination. 1. Esin N.N. Submersible pneumatic percussion machines for drilling. Novosibirsk, Science, 1976, s; 43. 2i USSR Copyright Certificate for Application No. 2964159, cl. E 21 C 3/24, 1980 Gprotioty).