Buffering equipment of dedusting and deslagging blowout prevention hole system

Abstract

The utility model discloses a dedusting deslagging blowout prevention system buffer device which comprises a box body, a high negative pressure pipeline connector, a low negative pressure pipeline connector and a box body spraying device are arranged on the left side and the right side of the top of the box body respectively, the high negative pressure pipeline connector and the low negative pressure pipeline connector are connected to a high negative pressure pipe and a low negative pressure pipe respectively, and a deslagging drainage port is formed in the left side of the box body. A dust removal device negative pressure pumping opening, an orifice slag discharging and conveying opening and a sewage high-pressure water switching opening are sequentially formed in the right side of the anti-spraying hole dust remover from top to bottom and are respectively connected to a dust discharging pipe of the anti-spraying hole dust remover, a slag discharging pipe of the drilling machine and a high-pressure water pipe; the anti-spraying hole dust remover is connected to a dust collecting pipe connected with the drilling machine. Drilling cuttings generated in the drilling construction process, compressed air used for deslagging and gas enter the buffer box in a unified mode, centralized treatment is carried out, and the problems that in the drilling process, dust prevention and control are difficult, gas fluctuates, an extraction pipeline is blocked by accumulated slag and the like are solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to dust removal and slag discharge anti-blowout hole system buffering equipment technical field, especially dust removal and slag discharge anti-blowout hole system buffering equipment. BACKGROUND

[0002] Most of the mines in the southwest region of China are close-distance coal seam group mining, and most of them are coal and gas outburst coal seams. The coal mine geological structure is complex, the gas pressure is high, the content is high, the permeability is low, and the outburst danger is strong. The importance of mine outburst prevention work is increasing day by day. At present, the gas in the coal body is mainly pre-drained through construction drainage drilling. Gas drainage has become an important basis for the implementation of "one mine one strategy" and "one face one strategy", and is also an important link to ensure safety production.

[0003] Gas drainage is the most important measure for gas control in coal mining, and drilling is the premise of gas drainage. Affected by geological conditions, high-pressure water is used as a slag discharge medium in the drilling construction process. The water pressure is insufficient, the slag discharge effect is poor, or the coal and rock layers swell when they come into contact with water, which often causes hole collapse. The pipe rate of drilling cannot meet the design requirements, which cannot meet the requirements of present gas control and coal and gas outburst prevention, and seriously restricts the safety production of the mine. The high-pressure water used for slag discharge is not easy to collect during drilling, which increases the difficulty of creating a safe working environment for underground water control and safety operation. The seepage into the floor accelerates the speed of roadway floor heave, increasing the engineering quantity of maintaining the roadway space in the later stage of mine production. Secondly, when high-pressure water is used as a slag discharge medium, drilling hole collapse and deep hole drilling are seriously affected by water pressure and water quantity. It is easy to cause abnormal back slag, which leads to the failure of gas release in the drilling hole. In high-gas occurrence areas, it is easy to cause blowout, causing gas fluctuation and even exceeding the limit.

[0004] When compressed air is used as a slag discharge medium, a large amount of coal dust or rock dust (collectively referred to as dust) is generated during drilling, far exceeding the national occupational health standards. The dust concentration behind the usual operating point is more than 3000mg / m³, which seriously pollutes the operating environment, and the visibility is less than 5m. Its pollution range can reach hundreds of meters, which poses a safety hazard to production. On the other hand, the dust generated during drilling has a high degree of dispersion. The proportion of 2-5μm dust, which is inhaled by the human body and causes pneumoconiosis, is high, and the settling speed is extremely slow. Its hydrophilicity decreases, and it is difficult to control after diffusing into the operating space. At the same time, during the drilling construction gas pre-drainage process, part of the drilling cuttings enter the drainage pipeline under the influence of the negative pressure of the drainage system, causing the accumulation of slag in the drainage system, affecting the gas drainage mixture, and reducing the gas drainage negative pressure due to water accumulation, affecting the drainage effect. SUMMARY

[0005] The technical problem to be solved by the utility model is to provide dust removal and slag discharge anti-blowout hole system buffering equipment to solve the technical problems in the prior art.

[0006] The utility model discloses a technical scheme that is adopted: Dust removal and deslagging blowout prevention hole system buffering equipment, including the box, the left and right of the box top is provided with high negative pressure pipeline interface and low negative pressure pipeline interface and box spray device respectively, and high negative pressure pipeline interface and low negative pressure pipeline interface are connected to high negative pressure pipe and low negative pressure pipe respectively, and the left side of the box is provided with deslagging and drainage, and the right side is sequentially provided with dust removal device negative pressure suction port, orifice deslagging and deslagging port and sewage high pressure water switching port from top to bottom, and dust removal device negative pressure suction port, orifice deslagging and deslagging port and sewage high pressure water switching port are connected to the dust removal pipe of blowout prevention hole dust remover, the deslagging pipe of drilling machine and high pressure water pipe respectively, and the blowout prevention hole dust remover is connected to the dust collection pipe of drilling machine connection, still including the deslagging device of installation in the bottom of the box, and the deslagging device is used for discharging the slurry and drill cuttings of the bottom of the box.

[0007] Further, the deslagging device includes a conveying spiral shaft, a conveying groove, and a material collecting plate. The material collecting plate is symmetrically arranged in the bottom of the box and is inclined towards the middle part. The conveying groove is located in the middle part of the two material collecting plates. The conveying spiral shaft is cooperated with the conveying groove and extends out of the deslagging pipe at one end. The bottom of the deslagging pipe is provided with a discharge pipe with a valve. The two ends of the conveying spiral shaft are respectively rotatably connected to the outer end of the deslagging pipe and the side wall of the box and extend out of the one end of the deslagging pipe and are connected to the pneumatic motor.

[0008] Further, the top of the box is provided with a flow guide plate. The flow guide plate is inclined towards the lower left and is located on the left side of the box spray device and can close the front and rear sides of the box.

[0009] Further, the lower end of the flow guide plate is provided with a shielding part extending horizontally towards the lower left.

[0010] Further, the cross section of the flow guide plate is in an arc shape.

[0011] Further, the nozzles of the box spray device are provided with at least two rows and are staggered towards the lower right.

[0012] Further, the front side of the box is provided with a plugging flange plate. The plugging flange plate is detachably and sealingly connected with a plugging disc.

[0013] The utility model has the advantages that compared with the prior art, the utility model is aimed at dust control in the drilling process, pressure air carrying gas diffusion, and drill cuttings and dust entering the extraction pipeline. The drill cuttings, pressure air, and gas generated in the drilling construction process are uniformly introduced into the buffer box through the design of the buffering device, and are centrally treated. Thus, the problems of dust control difficulty, gas fluctuation, and extraction pipeline accumulation and blockage in the drilling process are overcome. The drilling management level is improved, a good working environment is created, and the specific effects are as follows:

[0014] 1) After accessing the dust removal device used in drilling construction, the device is used to provide storage space for the pressure air used for deslagging, ejecting gas flow, and steam-water two-phase spraying, etc., to prevent the pressure air from carrying the drilling gas to diffuse to the working space during drilling construction, causing gas fluctuation. When the drilling appears a blowout phenomenon, a certain amount of gas can be stored in the device box space to prevent the instantaneous gas from gushing out, causing gas overrun accidents;

[0015] 2) The conventional connection port of the low negative pressure pipeline used in drilling construction is installed on the upper part of the device, and a high negative pressure pipeline connection port is also provided. When the amount of gas gushing out of the drilling is high, or the amount of negative pressure suction air does not match the amount of pressure air used for deslagging, ejecting gas flow, steam-water two-phase spraying, etc., the high and low negative pressure valves can be adjusted to keep the amount of negative pressure suction air and the amount of pressure air balanced to prevent gas from diffusing.

[0016] 3) Steam-water two-phase spraying is installed on the upper part of the device, and a guide plate is added at the high and low negative pressure suction position. During drilling construction, the drilling cuttings are discharged to the device through the deslagging pipe and fall to generate some dust. The dust-containing gas flow after the drilling dust removal device cannot be completely purified, causing some dust to enter the suction pipeline under the action of negative pressure suction. The steam-water two-phase spraying at the upper part of the box performs secondary purification and dust removal, and the dust-containing gas flow is fully mixed with the spraying under the action of the guide plate, improving the secondary purification efficiency and avoiding direct spraying into the suction pipeline;

[0017] 4) An automatic deslagging device is installed near the bottom of the device. The drilling cuttings entering the device fall into the collection plate, which is at a certain angle to make the drilling cuttings slide to the center for collection. A spiral conveying shaft is installed at the center of the collection plate, and a pneumatic motor is connected to one end of the spiral conveying shaft. After starting, the spiral conveying shaft automatically removes the mud and drilling cuttings in the box under the rotation of the pushing force;

[0018] 5) A deslagging and drainage port and a sewage and high-pressure water switching port are installed near the bottom of the device. For the problems that the mud entering the box and the drilling cuttings falling outside the receiving plate cannot be automatically removed and are difficult to clean, high-pressure water is used for flushing, and the device is removed through the deslagging and drainage port, effectively ensuring the internal space of the box.

[0019] 6) A plugging device is installed on the front side of the device. The plugging device can be disassembled to maintain the internal guide plate, automatic deslagging device, and clean the internal solidified drilling cuttings, etc., to ensure that the device maximizes the sealing, dust removal, and deslagging effects. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a three-dimensional structure diagram of the dust removal and deslagging anti-blowout system buffer equipment;

[0021] Figure 2 is a front view structure diagram of the dust removal and deslagging anti-blowout system buffer equipment;

[0022] Figure 3 yes Figure 2 Schematic diagram of the AA section structure;

[0023] Figure 4 This is a left-side structural diagram of the dust removal, slag discharge and anti-spray hole system buffer equipment;

[0024] Figure 5 yes Figure 4 Schematic diagram of the BB cross-section structure;

[0025] Figure 6 This is a schematic diagram of the three-dimensional structure of the dust removal, slag discharge and anti-spray hole system buffer equipment (with the left panel of the box removed);

[0026] Figure 7 This is a schematic diagram of the installation structure of the buffer equipment of the dust removal, slag discharge and anti-blowout hole system. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to specific embodiments.

[0028] Example 1: Figures 1-7 As shown, the dust removal, slag discharge and anti-blowout hole system buffer equipment includes a box body 1, and a high-negative-pressure pipeline interface 2, a low-negative-pressure pipeline interface 3 and a box spray device 4 are respectively provided on the left and right sides of the top of the box body 1. The high-negative-pressure pipeline interface 2 and the low-negative-pressure pipeline interface 3 are respectively connected to the high-negative-pressure pipe 9 and the low-negative-pressure pipe 10. A slag discharge outlet 5 is provided on the left side of the box body 1, and a dust removal device negative pressure extraction port 6, a hole slag discharge and conveying port 7 and a sewage high-pressure water switching port 8 are sequentially provided on the right side from top to bottom. The dust removal device negative pressure extraction port 6, the hole slag discharge and conveying port 7 and the sewage high-pressure water switching port 8 are respectively connected to the dust discharge pipe 11 of the anti-blowout hole dust collector, the slag discharge pipe and the high-pressure water pipe of the drilling rig, the anti-blowout hole dust collector is connected to the dust collecting pipe connected to the drilling rig, and also includes a slag discharge device 12 installed at the bottom of the box body 1. The slag discharge device 12 is used to discharge mud and drill cuttings at the bottom of the box body 1.

[0029] Furthermore, the above-mentioned slag discharge device 12 includes a conveying screw shaft 1201, a conveying trough 1202 and a collecting plate 1203. The collecting plate 1203 is composed of two pieces, which are symmetrically arranged at the bottom of the box body 1 and inclined toward the middle. The conveying trough 1202 is located in the middle of the two collecting plates 1203. The conveying screw shaft 1201 cooperates with the conveying trough 1202 and one end extends out of the slag discharge pipe 1204. A discharge pipe 1205 is provided at the bottom of the slag discharge pipe 1204. The two ends of the conveying screw shaft 1201 are respectively rotatably connected to the outer end of the slag discharge pipe 1204 and the side wall of the box body 1 and one end extending out of the slag discharge pipe 1204 is connected to the pneumatic motor 1205. The pneumatic motor 1205 is installed on the pneumatic motor 1205 through a frame.

[0030] The guide plate can shield the sprayed dust or the wet mud and drop into the bottom, and also avoid entering the negative pressure pipeline. The guide plate 13 is installed on the top of the box body 1, is inclined to the lower left, is located on the left side of the box body spray device 4, and can close the front and rear sides of the box body 1. The inclined guide plate is convenient for blocking the sprayed dust or the wet mud and dropping into the slag discharge device at the bottom of the box body. The thin plate with the inclined structure has the elastic buffering effect, and the service life of the guide plate is improved.

[0031] In order to further reduce the possibility of dust and mud entering the negative pressure pipeline, the lower end of the guide plate 13 is provided with a shielding part 14 extending horizontally to the lower left. On the one hand, the inlet gap between the airflow and the negative pressure pipeline is reduced. On the other hand, the inclined structure is also more conducive to further shielding the dust and mud from falling.

[0032] In order to further realize the elastic buffering of the flow, the cross section of the guide plate 13 is in an arc structure.

[0033] In order to improve the spraying effect, the box body spray device 4 adopts a water vapor spraying device. The nozzles are arranged in at least two rows and are staggered towards the lower right. The staggered arrangement of the spray can improve the possibility of dust entering and being sprayed and wetted into mud, and has a better dust removal effect.

[0034] In order to facilitate the cleaning and replacement of the internal guide plate and the cleaning of the internal mud, a plugging flange plate 15 is arranged on the front side of the box body 1. The plugging flange plate 15 is detachably sealed with a plugging disc 16. By detaching the plugging disc, the cleaning and replacement of the internal guide plate and the cleaning of the internal mud in the blocked state can be realized.

[0035] Embodiment 2: The use method of the dust removal and slag discharge anti-jet hole system buffering device. The method is as follows: before drilling construction, the water and slag storage multifunctional device of the extraction pipeline is connected to the drilling construction system, that is, the low negative pressure pipeline interface is connected to the low negative pressure anti-jet hole pipeline, and the high negative pressure pipeline interface is connected to the drilling extraction high negative pressure pipeline, so as to provide the water and slag storage multifunctional device of the extraction pipeline with a negative pressure extraction and control through a valve; the high pressure gas and high pressure water used by the nozzle are connected to the box body spray device, and the valve is opened to spray; the dust removal device is connected to the dust removal device negative pressure extraction port through a hose, and the hole port slag discharge of the drilling machine is connected to the hole port slag discharge and slag discharge port through a hose, so as to form a closed management of drilling construction; the sewage, high pressure water switching port, automatic slag discharge port and slag discharge and drainage port are closed, so as to form a device closed state; the pneumatic motor is installed and connected with the slag discharge device, and the drilling preparation work is completed.

[0036] After the device is connected, the dust-removed dust-containing airflow is introduced into the box through the dust removal device negative pressure suction port during drilling, and the drill cuttings are discharged into the box through the orifice discharge port, and are subjected to secondary dust removal under the action of the box spray device, and the formed slurry and drill cuttings fall into the collecting plate and are driven to rotate by the pneumatic motor to remove the slurry and drill cuttings;

[0037] After the device is connected, the dust-removed dust-containing airflow is introduced into the box through the dust removal device negative pressure suction port during drilling, and the drill cuttings are discharged into the box through the orifice discharge port, and are subjected to secondary dust removal under the action of the box spray device, and the formed slurry and drill cuttings fall into the collecting plate and are driven to rotate by the pneumatic motor to remove the slurry and drill cuttings;

[0038] After the drilling construction is completed, the valves at the dust removal device negative pressure suction port, the orifice discharge port, the high negative pressure pipeline interface, the low negative pressure pipeline interface, and the box spray device are closed, and the pneumatic motor is stopped, the sewage and high-pressure water switching port are connected to the high-pressure water pipe (when the valve is opened, the high-pressure water pipe can be used for sewage discharge), and the discharge and drainage port is opened, and the sludge and drill cuttings at the bottom of the box are removed under the action of high-pressure water washing.

[0039] When the collecting plate and the guide plate inside the box fail and need to be treated, or when the drill cuttings (slurry) at the bottom of the box cannot be discharged under the action of high-pressure water, the blocking device at the front side of the box is disassembled for treatment, and after the treatment is completed, the blocking device is reinstalled.

[0040] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application, therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A blowout preventer system buffer device for dust and residue removal, characterized by: The box (1) is provided with high negative pressure pipeline interface (2) and low negative pressure pipeline interface (3) and box spray device (4) on the top left and right respectively, the high negative pressure pipeline interface (2) and the low negative pressure pipeline interface (3) are connected to the high negative pressure pipe (9) and the low negative pressure pipe (10) respectively, the box (1) is provided with the residue discharge and drainage port (5) on the left side, and the dust removal device negative pressure suction port (6), the orifice residue discharge and residue discharge port (7) and the sewage high pressure water switching port (8) are sequentially arranged from top to bottom on the right side, the dust removal device negative pressure suction port (6), the orifice residue discharge and residue discharge port (7) and the sewage high pressure water switching port (8) are connected to the dust removal pipe (11) of the blowout preventer dust remover, the residue discharge pipe of the drilling machine and the high pressure water pipe, the blowout preventer dust remover is connected to the dust collection pipe connected to the drilling machine, and the box (1) is further provided with the residue discharge device (12) mounted on the bottom, the residue discharge device (12) is used for discharging the mud and drill cuttings at the bottom of the box (1); the box (1) is provided with the blocking flange plate (15) on the front side, and the blocking flange plate (15) is detachably and sealingly connected with the blocking disc (16).

2. The buffer apparatus for a blowout preventer system for a dust and residue removal system according to claim 1, wherein: The residue discharge device (12) comprises a conveying spiral shaft (1201), a conveying groove (1202) and a material collecting plate (1203), the material collecting plate (1203) is symmetrically arranged in the bottom of the box (1) and is inclined towards the middle part, the conveying groove (1202) is located in the middle part of the two material collecting plates (1203), the conveying spiral shaft (1201) is matched with the conveying groove (1202) and one end of the conveying spiral shaft (1201) extends out of the residue discharge pipe (1204), the bottom of the residue discharge pipe (1204) is provided with a discharge pipe with a valve, and the two ends of the conveying spiral shaft (1201) are respectively rotatably connected to the outer end of the residue discharge pipe (1204) and the side wall of the box (1) and extend out of the residue discharge pipe (1204) and are connected to the pneumatic motor.

3. The buffer device for a blowout preventer system for dust and residue removal according to claim 1 or 2, characterized in that: The box (1) is provided with the guide plate (13) on the top, the guide plate (13) is inclined to the lower left and is located on the left side of the box spray device (4) and can close the front and rear sides of the box (1).

4. The buffer apparatus for a blowout preventer system for a dust and residue removal system according to claim 3, wherein: The lower end of the guide plate (13) is provided with a shielding part (14) extending horizontally to the lower left.

5. The buffer apparatus for a blowout preventer system for a dust and debris removal system according to claim 3, wherein: The cross section of the guide plate (13) is an arc structure.

6. The buffer apparatus for a blowout preventer system according to claim 1, wherein: The nozzles of the box spray device (4) are provided with at least two rows and are staggered towards the lower right.

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