CN218716636U - Gas drainage drilling protector - Google Patents

Abstract

The utility model relates to a drilling protection device for gas extraction, which includes a dust collection tube and a drill pipe, and is characterized in that it also includes a gas suction device connected with the dust collection tube and a hanger arranged at the right end of the dust collection tube; The dust cylinder is fixed on the rock wall through the base, and there is a rubber soft connection between the dust collection cylinder and the base; the hanging parts include wing plates welded symmetrically on both sides of the dust collection cylinder, two steel wire ropes and anchor rods fixed on the rock wall; The upper end of the wing plate is welded with a ring for fastening the wire rope; the tail end of the anchor rod is also provided with a ring; one end of the two steel wire ropes is connected with the ring on the wing plate, and the other end is connected with the ring on the anchor rod; The utility model can adjust the direction of the dust collection cylinder, which is more convenient to drill drilling holes in various directions and angles. In addition, the utility model can also effectively support the dust collection cylinder to prevent the dust collection cylinder from falling due to excessive force. The normal use of gas suction equipment and the normal progress of drilling operations are guaranteed.

Description

A gas drainage drilling protection device

technical field

The utility model belongs to the field of coal mining equipment, in particular relates to a gas drainage drilling protection device.

Background technique

In gas drainage drilling, in order to avoid excessive dust and affect the surrounding environment, a dust collector is installed at the drill pipe, and the dust collector is fixed on the rock wall with a base, and the drill pipe is inserted into the dust collector to cover the drill pipe. Drainage drilling operation is carried out after the hole. The base and the dust collector are generally made of hard materials. When the rock wall of the drill hole has a slope, the dust collector fixed by the base also has a slope. The drill pipe inserted into the dust collector The inclination angle of the machine is limited by the dust collector, and it is difficult to adjust the direction of the drilling.

In addition, when drilling for high gas (the main component is methane, chemical molecular formula CH ₄ ) or coal and gas outburst coal mines, gas will gushe out or be ejected from the borehole, resulting in accidents where the gas concentration exceeds the limit at the extraction working face. , affecting construction safety, in order to timely remove the gas gushed out during the drilling process, a gas suction device can be connected to the dust collection box, but the gas suction device will increase the force on the dust collection box, resulting in the dust collection box being fixed If it is not firm, it will affect the drilling operation.

Contents of the invention

In order to overcome the problems existing in the background technology, the utility model provides a gas drainage drilling protection device, by setting a rubber soft connection on the base and the dust collection cylinder, the direction of the dust collection cylinder can be adjusted, and it is more convenient to adjust the drill pipe In addition, the utility model is aimed at the characteristics that the dust collection cylinder is subjected to heavy force, easy to fall, and unstable due to the gas suction equipment equipped on the dust collection cylinder. By setting the hanging parts, It can effectively support the dust collection cylinder, prevent the dust collection cylinder from falling due to excessive force, and ensure the normal use of gas suction equipment and normal drilling operations.

In order to achieve the above object, the utility model is achieved through the following technical solutions:

The gas extraction drilling protection device includes a dust collection tube and a drill pipe, and is characterized in that it also includes a gas suction device connected to the dust collection tube and a hanger arranged at the right end of the dust collection tube; the dust collection tube The base is fixed on the rock wall, and there is a rubber soft connection between the base and the dust collection tube; the hanger includes wing plates welded symmetrically on both sides of the dust collection tube, two steel wire ropes and anchors fixed on the rock wall Rod; the upper end of the wing plate is welded with a ring for fastening the wire rope; the tail end of the anchor rod is also provided with a ring; one end of the two steel wire ropes is connected to the ring on the wing plate, and the other end is connected to the ring on the anchor rod .

As a preference, the gas suction equipment includes a gas extraction pipe A and a gas extraction pipe B communicated with the dust collector 1, a solenoid valve A arranged on the gas extraction pipe A, an electromagnetic valve A arranged on the gas extraction pipe B Solenoid valve B for solenoid valve A, tertiary power supply for solenoid valve A, and secondary power supply for solenoid valve B; gas drainage pipe A and gas drainage pipe B are respectively connected to the gas drainage pipe network; solenoid valve A and solenoid valve Valve B is a direct-acting solenoid valve; a methane power-off device A is connected to the connection line between the secondary power supply and the tertiary power supply; a methane power-off device B is connected to the connection line between the primary power supply and the The cut-off value of electric meter A is smaller than the cut-off value of methane cut-off meter B.

As a preference, the dust collection tube is also provided with a slag discharge and dust removal pipe; the slag discharge and dust removal pipe is arranged below the dust collection tube, and is located inside the gas extraction pipe A and the gas extraction pipe B; the slag discharge and dust removal pipe A water spray pipe and a high-pressure air pipe are provided on the top; the outlets of the water spray pipe and the high-pressure air pipe are respectively inserted into the slag discharge and dust removal pipe, and the outlets of both are provided with nozzles facing the outlet of the slag discharge and dust removal pipe; the water spray pipe and the high pressure air pipe Valves are respectively arranged on the trachea.

Preferably, the main pipe of the slag discharge and dust removal pipe is provided with a valve.

Preferably, the drill pipe is inserted into the dust collector, and the end of the dust collector is provided with a sealing plate, and a through hole for the drill pipe to pass is opened on the sealing plate; the sealing plate is made of rubber.

The beneficial effects of the utility model:

The utility model can adjust the direction of the dust collecting cylinder by setting a rubber soft connection between the base and the dust collecting cylinder, which is more convenient to adjust the angle of the drill rod, and drill holes with required angles according to the drilling requirements. The utility model aims at the characteristics that the gas suction equipment on the dust collection cylinder causes the dust collection cylinder to be stressed, easy to fall, and unstable. By setting the hanging parts, the dust collection cylinder can be effectively supported to prevent the dust collection cylinder from being damaged due to force. It is too large and falls down, which ensures the normal use of the gas suction equipment and the normal drilling operation; the rubber soft connection of the application is used in conjunction with the hanger to meet the requirements of adjusting the angle of the drill pipe and preventing gas injection.

Description of drawings

Fig. 1 is the overall structural representation of the utility model;

Fig. 2 is a schematic diagram of the connection relationship between the wing plate and the dust collector of the present invention;

In the figure, 1-dust collector, 2-drill pipe, 3-base, 4-rock wall, 5-rubber soft connection, 6-wing plate, 7-wire rope, 8-bolt, 9-hanging ring, 10-hanging Ring, 11-gas drainage pipe A, 12-gas drainage pipe B, 13-solenoid valve A, 14-solenoid valve B, 15-methane power-off instrument A, 16-methane power-off instrument B, 17-slagging Dust removal pipe, 18-water spray pipe, 19-high pressure air pipe, 20-valve, 21-sealing plate.

Detailed ways

In order to make the purpose, technical solutions and beneficial effects of the present utility model clearer, the preferred embodiments of the present utility model will be described in detail below in conjunction with the accompanying drawings, so as to facilitate the understanding of technical personnel.

As shown in Fig. 1-2, the gas extraction drilling protection device includes a dust collection cylinder 1, a drill pipe 2, a gas suction device connected to the dust collection cylinder, and a hanger arranged at the right end of the dust collection cylinder 1.

The dust collector 1 is fixed on the rock wall 4 through the base 3 , a rubber soft connection 5 is provided between the base 3 and the dust collector 1 , and the drill pipe 2 is inserted into the dust collector 1 . Because the rock wall 4 of the mine has a certain slope, and the base 3 and the dust collecting tube 1 are rigidly and vertically connected, when the base 3 is fixed on the sloped rock wall 4, the dust collecting tube 1 will follow the The angle of the drill pipe 2 inserted into the dust collector 1 is limited due to the inclination. By setting the rubber soft connection 5, the angle of the dust collector 1 can be adjusted, and the direction of the dust collector can be adjusted, which makes it easier to adjust the angle of the drill pipe. Drainage boreholes at various angles. The end of the dust collector 1 is provided with a sealing plate 21, and the sealing plate 21 is provided with a through hole through which the drill pipe 2 can pass, and the sealing plate 21 is made of rubber. The use of rubber material can avoid hard collision between the drill rod 2 and the sealing plate 21 when drilling, and can provide the drill rod 2 with a certain angle adjustment space.

In the process of coal mining, when high gas (the main component is methane, chemical formula CH ₄ ) or coal and gas outburst coal mine drainage drilling, the gas will gushes out or spews out from the borehole, and the gas gushes out in an instant Therefore, the applicant installed gas suction equipment on the dust collection box 1. The gas suction equipment has a certain weight. Due to the use of the rubber soft connection 5, the gas suction equipment will cause dust collection. The barrel 1 falls and tilts, which affects the normal drilling operation. For this reason, a hanging piece is specially set up, which can effectively support the dust collecting barrel 1 and the gas suction equipment.

The hanger includes a wing plate 6 symmetrically welded on the outer wall of the dust collection tube 1, two steel wire ropes 7 and an anchor rod 8 fixed on the rock wall 4. The upper end of the wing plate 6 is welded with a lifting ring 9 for fastening the steel wire rope. The tail end of the anchor rod 8 is provided with a hanging ring 10. One end of the two steel wire ropes 7 is connected with the lifting ring 9 on the wing plate 6, and the other end is connected with the anchor rod 8. Hanging ring 10 on the connection. The hanger can effectively support the dust collector 1, thereby being able to bear the weight of the gas suction equipment. Through the two wing plates 6 and the two steel wire ropes, the stress stability of the dust collector 1 can be increased. Under the effect of the rubber soft connection 5, the angle of the dust collector 1 can be adjusted, and after the angle adjustment is completed, the fastening position of the steel wire rope 7 and the hanging ring 10 is fixed.

The gas suction equipment includes a gas extraction pipe A11 and a gas extraction pipe B12 connected with the dust collector 1, a solenoid valve A13 arranged on the gas extraction pipe A11, an electromagnetic valve B14 arranged on the gas extraction pipe B12, Tertiary power supply for solenoid valve A13 and secondary power supply for solenoid valve B14.

Usually, in order to ensure the safety of the working surface, a gas drainage pipe network is arranged underground, and the gas drainage pipe network is arranged in each area of the underground, and the gas drainage pump installed on the ground provides suction vacuum for the gas drainage pipe network. Spend. The gas drainage pipe A11 and the gas drainage pipe B12 are respectively connected to the gas drainage pipe network. The solenoid valve A13 and the solenoid valve B14 are direct-acting solenoid valves, and the direct-acting solenoid valves will automatically open when the power is off. The connection line between the secondary power supply and the tertiary power supply is connected with a methane power-off instrument A15, and the connection line between the primary power supply and the secondary power supply is connected with a methane power-off instrument B16. The alarm power-off value of the methane power-off device A15 is set to ≥1.0%, and the alarm power-off value of the methane power-off device B16 is set to ≥1.5%. When the methane power-off instrument A15 detects that the concentration of methane in the working environment is ≥ 1.0%, the solenoid valve A14 is powered off while the alarm is turned on. The connecting pipelines of the drainage pipe network are connected to start gas extraction to reduce the gas concentration at the working face, and at the same time manually close the valve 20 on the slag discharge and dust removal pipe 17 to avoid gas leakage from the slag discharge and dust removal pipe 17. The alarm power-off value of the methane power-off device B16 is set to ≥1.5%. When the gas gushing volume is relatively large and the gas concentration continues to rise until the gas concentration in the working area reaches 1.5%, the methane power-off device B16 will make the solenoid valve When B14 is powered off, solenoid valve B14 is opened, and the gas drainage pipe B12 is connected to the connecting pipeline of the gas drainage network to increase the amount of gas drainage. And the third-level power supply is provided by the second-level power supply. As long as the second-level power supply is cut off, the third-level power supply must be cut off. Therefore, as long as the methane power failure instrument B16 alarms and cuts off the power supply, the third-level power supply must be cut off, and the corresponding solenoid valve A13 will also be cut off. Open, the gas drainage pipe A11 is connected to the gas drainage pipe network at the same time, even if the methane power failure instrument A15 fails, the connection between the gas drainage pipe A11 and the gas drainage pipe network will not be affected.

When drilling, wet drilling is used, and the dust is relatively small. When dry drilling, the dust is relatively large. Water spray pipe 18 and high-pressure air pipe 19 are provided, and dust removal can be carried out while utilizing slag discharge and dust removal pipe 17 to drain away drilling slag. The outlets of the water spray pipe 18 and the high-pressure air pipe 19 are inserted into the slag discharge and dust removal pipe 17 respectively, and both outlets are provided with nozzles facing the slag discharge and dust removal pipe 17 outlet direction. When the high-pressure gas is ejected from the outlet of the high-pressure gas pipe 19, a negative pressure is generated behind the nozzle, and the dust generated during drilling is sucked into the slag discharge and dust removal pipe 17, and is discharged from the slag discharge and dust removal pipe 17 to the dust collection device along with the high-pressure gas . The water mist sprayed by the water spray pipe 18 wets the dust and is discharged in the form of dust particles or mud, which greatly reduces the amount of dust on the job site when drilling. The water spray pipe 18 and the high-pressure air pipe 19 are respectively provided with valves 20 .

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (5)

1. A gas extraction drilling protection device comprises a dust collection cylinder (1) and a drill rod (2), and is characterized by further comprising a gas suction device communicated with the dust collection cylinder and a hanging piece arranged at the right end of the dust collection cylinder (1); the dust collecting cylinder (1) is fixed on a rock wall (4) through a base (3), and a rubber flexible connection (5) is arranged between the base (3) and the dust collecting cylinder (1); the hanging piece comprises wing plates (6) symmetrically welded on the outer wall of the dust collecting barrel (1), two steel wire ropes (7) and an anchor rod (8) fixed on the rock wall (4); a hanging ring (9) used for fastening the steel wire rope is welded on the upper end surface of the wing plate (6); the tail end of the anchor rod (8) is provided with a hanging ring (10); one end of each of the two steel wire ropes (7) is connected with a hanging ring (9) on the wing plate (6), and the other end is connected with a hanging ring (10) on the anchor rod (8).

2. The gas extraction borehole protection device according to claim 1, wherein the gas extraction equipment comprises a gas extraction pipe A (11) and a gas extraction pipe B (12) which are communicated with the dust collection barrel (1), an electromagnetic valve A (13) arranged on the gas extraction pipe A (11), an electromagnetic valve B (14) arranged on the gas extraction pipe B (12), a tertiary power supply for supplying power to the electromagnetic valve A (13), and a secondary power supply for supplying power to the electromagnetic valve B (14); the gas extraction pipe A (11) and the gas extraction pipe B (12) are respectively communicated with a gas extraction pipe network; the electromagnetic valve A (13) and the electromagnetic valve B (14) are both direct-acting electromagnetic valves; a methane power-off instrument A (15) is connected on a connecting line of the secondary power supply and the tertiary power supply; a connecting circuit of the primary power supply and the secondary power supply is connected with a methane outage instrument B (16); the power-off value of the methane power-off instrument A (15) is smaller than that of the methane power-off instrument B (16).

3. The gas extraction borehole protection device according to claim 1, wherein a slag discharge and dust removal pipe (17) is further arranged on the dust collection barrel (1); the slag discharge and dust removal pipe (17) is arranged below the dust collection barrel (1) and is positioned on the inner sides of the gas extraction pipe A (11) and the gas extraction pipe B (12); a water spray pipe (18) and a high-pressure air pipe (19) are arranged on the slag discharging and dust removing pipe (17); the outlets of the water spray pipe (18) and the high-pressure air pipe (19) are respectively inserted into the slag-discharging and dust-removing pipe (17), and the outlets of the water spray pipe and the high-pressure air pipe are respectively provided with a nozzle facing the outlet direction of the slag-discharging and dust-removing pipe (17); valves (20) are respectively arranged on the water spraying pipe (18) and the high-pressure air pipe (19).

4. The gas extraction borehole protection device according to claim 3, wherein a valve (20) is arranged on a main pipe of the slag discharge and dust removal pipe (17).

5. The gas extraction drilling protection device according to claim 1, wherein the drill rod (2) is inserted into the dust collection cylinder (1), a sealing plate (21) is arranged at the tail end of the dust collection cylinder (1), and a through hole through which the drill rod (2) can pass is formed in the sealing plate (21); the sealing plate (21) is made of rubber.

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