CN213239036U - Directional long-drill-hole gas extraction negative pressure and extraction concentration monitoring equipment - Google Patents

Abstract

The utility model relates to the technical field of monitoring equipment for gas extraction negative pressure, in particular to monitoring equipment for directional long-drill-hole gas extraction negative pressure and extraction concentration, which comprises a first limit structure, a sealing structure, a driving structure, a monitoring structure, a second limit structure and an angle adjusting structure; the monitoring structure for monitoring the gas extraction negative pressure and extraction concentration of the directional long drill hole is provided with a first limiting structure for limiting, the first limiting structure is provided with a sealing structure for sealing, and the monitoring structure is arranged in the sealing structure; be equipped with on the seal structure and be used for driven drive structure, and then be convenient for contradict with long drilling through drive structure drive seal structure inflation, make the leakproofness between seal structure and the long drilling better, the lateral wall of the firm conflict long drilling of first limit structure of drive structure drive first limit structure messenger simultaneously makes the connection of the monitoring structure of first limit structure's inside more firm.

Description

Directional long-drill-hole gas extraction negative pressure and extraction concentration monitoring equipment

Technical Field

The utility model relates to a monitoring facilities technical field of gas drainage negative pressure, specific directional long drilling gas drainage negative pressure and take out the monitoring facilities of taking out concentration that says so.

Background

With the increase of mining depth, the gas content and the gas pressure are increased, the coal seam outburst risk is increased, and the gas problem is the main factor that restricts the efficient and safe production of coal mines. When the outburst coal seam is mined, the regional outburst prevention measures mainly comprise mining protective layers and pre-pumping coal seam gas, and when part of mines do not have the condition of mining protective layers, the pre-pumping coal seam gas is required to be adopted as the regional outburst prevention measures; in the general situation of pre-pumping coal seam gas, gas is pumped by selecting and arranging bedding or cross-layer drilled holes; the gas extraction is not only a fundamental measure for preventing and treating coal mine gas disasters, but also an important means for developing coal bed gas resources, and the longer the length of the directional long drill hole is, the better the extraction effect is; under the background of long drilling, high negative pressure and dense pumping, the pumping and extracting negative pressure is gradually reduced along the depth direction of the drilling hole until the negative pressure disappears and even becomes positive pressure at the bottom of the drilling hole because the pumping and extracting drilling hole is influenced by the on-way resistance of the inner wall of the drilling hole and the seepage and emission of gas from the coal bed continuously after the length of the pumping and extracting drilling hole is increased, and the pumping and extracting negative pressure has important influence on the pumping and extracting effect.

However, at present, most of the research results of domestic and foreign scholars on the mine gas extraction theory are directed at shallow boreholes of dozens of meters, the viscous mechanical influence of gas flowing in the boreholes is not considered, so that the problem of pressure drop cannot be ignored along with the continuous increase of the lengths of the boreholes, some theoretical guidance is lacked in the design aspect of gas extraction, and certain blindness exists; therefore, exploring the seepage rule of gas in the coal bed and the extraction drill hole, grasping the dynamic change characteristic of extraction negative pressure along the length of the drill hole, determining reasonable gas extraction parameters, and cleaning the matching between the long drill hole and the extraction negative pressure, so that the method becomes one of the main problems of improving the gas extraction effect at present; the distance of a common drill hole is short, the lost negative pressure is small, the negative pressure at the bottom of the hole meets the extraction requirement, but the loss of the negative pressure is large due to the long distance of the directional long drill hole, so that the situation that the bottom of the hole is free of negative pressure or even positive pressure can occur, the extraction effect is influenced, the extraction of the too long drill hole is not meaningful, the end part of the coal mine drill hole is not convenient to seal and connect, and the monitoring angle is not convenient to adjust quickly.

SUMMERY OF THE UTILITY MODEL

To the problem among the prior art, the utility model provides a directional long drilling gas takes out and adopts negative pressure and take out monitoring facilities of concentration.

The utility model provides a technical scheme that its technical problem adopted is: a monitoring device for gas extraction negative pressure and extraction concentration of a directional long drill hole comprises a first limit structure, a sealing structure, a driving structure, a monitoring structure, a second limit structure and an angle adjusting structure; the monitoring structure for monitoring the gas extraction negative pressure and the extraction concentration of the directional long drill hole is provided with the first limiting structure for limiting, the first limiting structure is provided with the sealing structure for sealing, and the monitoring structure is arranged in the sealing structure; the sealing structure is provided with a driving structure used for driving, and the driving structure is provided with a second limiting structure used for limiting the angle adjusting structure.

Specifically, the monitoring structure comprises an extraction pipe, a three-way pipe, a hose, a valve, a pressure display screen, a coal seam, a drill hole and a monitoring sensor, wherein the extraction pipe penetrates through the first limiting structure, a hole sealing device is arranged on one side of the first limiting structure facing the inside of the drill hole, the extraction pipe penetrates through the hole sealing device and goes deep into the drill hole, the three-way pipe is arranged at one end of the extraction pipe, the two ends of the three-way pipe, which deviate from the extraction pipe, are both provided with the valve, the pressure display screen is arranged on the valve, the extraction pipe is communicated with the drill hole in the coal seam, a plurality of monitoring sensors are arranged in the drill hole in a spaced mode along the length direction of the drill hole, and the monitoring sensors are electrically connected with the pressure display screen.

Specifically, the sealing structure comprises a sealing ring and a fixing sleeve, the pumping pipe is arranged inside the fixing sleeve, and the sealing ring with a wavy cross section and a containing cavity is welded outside the fixing sleeve.

Specifically, the drive structure includes support frame, actuating lever, first electric hydraulic cylinder and supercharging stopper, the support frame is fixed in the top of fixed cover, first electric hydraulic cylinder's top is fixed in the support frame, the actuating lever with sliding connection between the support frame, the actuating lever is fixed in first electric hydraulic cylinder, the actuating lever deviates from first electric hydraulic cylinder's one end is equipped with supercharging stopper, annular structure supercharging stopper with sliding connection between the fixed cover, supercharging stopper with hold between the fixed cover the cavity with switch on between the sealing washer.

Specifically, first limit structure includes base, gag lever post, latch, transfer line, fixture block, gyro wheel and spout, the bottom circumference array of supercharging stopper is equipped with a plurality ofly the transfer line, the bottom of transfer line is equipped with the slope setting the spout, the inside of spout is equipped with roll connection the gyro wheel, the gyro wheel with rotate between the gag lever post and be connected, the gag lever post with contained angle between the transfer line is the acute angle, the transfer line with sliding connection between the fixed cover, the transfer line deviates from the one end of gyro wheel is equipped with a plurality of slopes and sets up the latch, the base is fixed in fixed cover, be equipped with on the base the fixture block, the fixture block with fixed cover block.

Specifically, second limit structure includes trachea, second electric hydraulic cylinder, piston, containing box, two reset spring, rand and gear, the containing box is located the lateral wall of support frame, the inside of containing box is equipped with L shape the piston, the one end of second electric hydraulic cylinder is fixed in the support frame, the other one end of second electric hydraulic cylinder is fixed in the piston, one reset spring locates the inside of containing box, reset spring's tip is equipped with the rand, the rand with gear engagement, be equipped with on the containing box the trachea.

Specifically, the angle adjusting structure comprises a first supporting rod, a second supporting rod, a first rotating shaft and a second rotating shaft, the first rotating shaft is connected with the first supporting rod and the containing box in a penetrating way, the first supporting rod is fixed on the first rotating shaft, the first rotating shaft is connected with the containing box in a rotating way, the end part of the first rotating shaft is provided with one gear, the clamping ring meshed with one gear at the end part of the first rotating shaft is connected with the containing box in a sliding way, the second rotating shaft is connected with the first supporting rod in a rotating way, the second supporting rod is fixed on the second rotating shaft, the end part of the second rotating shaft is provided with another gear, another clamping ring is connected with the first supporting rod in a sliding way, another reset spring is fixed on the first supporting rod, and the other end of the air pipe is communicated with the clamping ring and the first supporting rod, the pressure display screen is rotatably connected with the second supporting rod.

The utility model has the advantages that:

(1) a directional long drilling gas is taken out and is adopted negative pressure and take out the monitoring facilities who takes out concentration for the monitoring of directional long drilling gas is taken out and is adopted the negative pressure and take out the structural first limit structure that is used for spacingly that is equipped with of monitoring of concentration, the setting of monitoring structure and then be convenient for monitor the gas concentration of the inside different degree of depth in colliery, promptly: according to the characteristics of long drilling, a plurality of monitoring sensors are arranged at different drilling positions, the drilling is monitored in a whole-hole section, data such as gas concentration and extraction negative pressure at different positions such as the bottom and the middle of the drilling are obtained, the dynamic change situation of the extraction negative pressure of the long drilling along the length of the drilling can be solved, the gas information of the whole-hole section of the long drilling is mastered, the monitoring sensors display the gas concentration and the extraction negative pressure in the drilling on a pressure display screen in a digital mode, the orifice negative pressure can be dynamically adjusted at an orifice switch according to the data, the real-time display of gas parameters and the extraction negative pressure in the drilling is realized, the optimal gas extraction effect is achieved, the detection of the gas concentration, the extraction negative pressure and other parameters at different positions in the long drilling is realized, the operation is simple, and the application is convenient.

(2) The utility model discloses a directional long drilling gas drainage negative pressure and take out the monitoring facilities of concentration of taking out, be equipped with the first limit structure that is used for spacing on the monitoring structure that is used for monitoring directional long drilling gas drainage negative pressure and takes out concentration of taking out, be equipped with the seal structure that is used for sealing on the first limit structure, and the inside of seal structure is located to the monitoring structure; be equipped with on the seal structure and be used for driven drive structure, and then be convenient for contradict with long drilling through drive structure drive seal structure inflation, make the leakproofness between seal structure and the long drilling better, the lateral wall of the firm conflict long drilling of first limit structure of drive structure drive first limit structure messenger simultaneously makes the connection of the monitoring structure of first limit structure's inside more firm, promptly: firstly, a plurality of monitoring sensors are fixed inside a drill hole, then a fixed sleeve and a base are extended to the end part of the drill hole, then a first electric hydraulic cylinder is connected with a power supply, the first electric hydraulic cylinder extends to drive a driving rod and a supporting frame to slide, the driving rod drives a pressurizing plug to slide inside the fixed sleeve, so that a containing cavity between the pressurizing plug and the fixed sleeve is reduced, air inside the pressurizing plug and the fixed sleeve enters the inside of a sealing ring, the sealing ring gradually expands and is abutted against the side wall of the drill hole, meanwhile, the section of the sealing ring is of a wave-shaped structure, so that the side wall of the drill hole can be sealed in multiple layers conveniently, the sealing performance between the fixed sleeve and the drill hole is better, the pressurizing plug drives a transmission rod and the fixed sleeve to slide when sliding, a sliding chute on the transmission rod guides a, and then the gag lever post that makes the circumference array set up contradicts the lateral wall of drilling, and then makes the tensile individual ability of fixed cover stronger, and gag lever post and the equal slope of latch set up simultaneously, exert the effort towards the inside of drilling to the transmission rod when making the gag lever post contradict drilling, and then make the stability of fixed cover better, have increased lifting surface area and frictional force simultaneously, are equipped with the fixture block on the base simultaneously, block between fixture block and the fixed cover, and then make the installation of base more stable high-efficient.

(3) The utility model discloses a directional long drilling gas drainage negative pressure and take out the monitoring facilities of taking out concentration, be equipped with on the drive structure and be used for carrying out the second limit structure spacing to angle modulation structure; second limit structure connects in the angle that is used for adjusting the monitoring, and angle modulation structure connects in monitoring structure, and then is convenient for adjust the angle of monitoring through angle modulation structure, makes to look over monitoring data convenient and fast more, promptly: when the second electric hydraulic cylinder contracts, the piston and the containing box are driven to slide, the containing cavity between the piston and the containing box is increased, then the pressure of the clamping ring to the end part is reduced, the clamping ring is not clamped with the gear under the action of the reset spring, then the second support rod drives the second rotating shaft to rotate, the first support rod drives the first rotating shaft to rotate, further the angle of the space of the end part of the second support rod is adjusted, then the second electric hydraulic cylinder extends, the piston and the containing box are driven to slide, the containing cavity between the piston and the containing box is reduced, then the pressure of the clamping ring to the end part is increased, the clamping ring is clamped with the gear under the action of the pressure, then the second support rod and the first support rod are limited, further the space angle of the pressure display screen is convenient to adjust, and the data checking is more convenient and rapid.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the overall structure of a preferred embodiment of the monitoring device for the gas extraction negative pressure and extraction concentration of the directional long borehole provided by the utility model;

FIG. 2 is an enlarged view of the part A shown in FIG. 1;

FIG. 3 is an enlarged view of the structure of the portion B shown in FIG. 1;

FIG. 4 is a schematic view of a connection structure of the first position-limiting structure and the sealing structure shown in FIG. 1;

FIG. 5 is an enlarged view of the structure of the portion C shown in FIG. 4;

FIG. 6 is an enlarged view of the structure of the portion D shown in FIG. 4;

FIG. 7 is a schematic view of a connection structure between the second limiting structure and the angle adjusting structure shown in FIG. 1;

fig. 8 is a schematic view of a connection structure between the first limiting structure and the monitoring structure shown in fig. 1.

In the figure: 1. the device comprises a first limiting structure, 11, a base, 12, a limiting rod, 13, a latch, 14, a transmission rod, 15, a fixture block, 16, a roller, 17, a sliding groove, 2, a sealing structure, 21, a sealing ring, 22, a fixing sleeve, 3, a driving structure, 31, a supporting frame, 32, a driving rod, 33, a first electric hydraulic cylinder, 34, a pressurizing plug, 4, a monitoring structure, 41, an extraction pipe, 42, a three-way pipe, 43, a hose, 44, a valve, 45, a pressure display screen, 46, a coal bed, 47, a drilling hole, 48, a monitoring sensor, 5, a second limiting structure, 51, an air pipe, 52, a second electric hydraulic cylinder, 53, a piston, 54, a containing box, 55, a return spring, 56, a clamping ring, 57, a gear, 6, an angle adjusting structure, 61, a first supporting rod, 62, a second supporting rod, 63, a first rotating shaft, 64, a second rotating shaft, 7 and a hole sealing device.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand and understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-8, the monitoring device for the directional long-borehole gas extraction negative pressure and extraction concentration of the utility model comprises a first limit structure 1, a sealing structure 2, a driving structure 3, a monitoring structure 4, a second limit structure 5 and an angle adjusting structure 6; the monitoring structure 4 for monitoring the gas extraction negative pressure and extraction concentration of the directional long drill hole is provided with the first limiting structure 1 for limiting, the first limiting structure 1 is provided with the sealing structure 2 for sealing, and the monitoring structure 4 is arranged inside the sealing structure 2; the driving structure 3 for driving is arranged on the sealing structure 2, and the second limiting structure 5 for limiting the angle adjusting structure 6 is arranged on the driving structure 3; the second limiting structure 5 is connected to the angle adjusting structure 6 for adjusting the angle of monitoring, and the angle adjusting structure 6 is connected to the monitoring structure 4.

Specifically, the monitoring structure 4 comprises an extraction pipe 41, a three-way pipe 42, a hose 43, a valve 44, a pressure display screen 45, a coal seam 46, a borehole 47 and a monitoring sensor 48, wherein the extraction pipe 41 penetrates through the first limiting structure 1, the three-way pipe 42 is arranged at one end of the extraction pipe 41, the hoses 43 are arranged at two ends of the three-way pipe 42 away from the extraction pipe 41, the valve 44 is arranged at one end of the hose 43 away from the three-way pipe 42, the pressure display screen 45 is arranged on one of the valves 44, the extraction pipe 41 is communicated with the borehole 47 in the coal seam 46, the monitoring sensors 48 are arranged in the borehole 47, and the monitoring sensors 48 are electrically connected with the pressure display screen 45; a be used for monitoring directional long drilling gas drainage negative pressure and take out concentration be equipped with on the monitoring structure 4 and be used for spacingly first limit structure 1, the setting of monitoring structure 4 is then convenient for monitor the gas concentration of the inside different degree of depth in colliery, promptly: aiming at the long drilling characteristic, a plurality of monitoring sensors 48 are arranged at different positions of the drilling hole 47, monitoring the whole hole section of the drill hole 47 to obtain data such as gas concentration, extraction negative pressure and the like at different positions such as the bottom and the middle of the drill hole 47, solving the dynamic change situation of the extraction negative pressure of the long drill hole along the length of the drill hole, realizing the grasp of the gas information of the whole hole section of the long drill hole, the monitoring sensor 48 displays information such as gas concentration and extraction negative pressure in the borehole 47 on the pressure display screen 45 in a digital form, and can display the information according to the data, the orifice negative pressure is dynamically adjusted at the orifice switch, so that the real-time display of gas parameters and extraction negative pressure in the hole is realized, the optimal gas extraction effect is achieved, the detection of parameters such as gas concentration, extraction negative pressure and the like at different positions in the long drill hole is realized, the operation is simple, and the application is convenient.

Specifically, the sealing structure 2 comprises a sealing ring 21 and a fixing sleeve 22, the extraction pipe 41 is arranged inside the fixing sleeve 22, and the sealing ring 21 with a corrugated cross section and a containing cavity is welded outside the fixing sleeve 22.

Specifically, drive structure 3 includes support frame 31, actuating lever 32, first electric hydraulic cylinder 33 and pressure boost stopper 34, support frame 31 is fixed in the top of fixed cover 22, the top of first electric hydraulic cylinder 33 is fixed in support frame 31, actuating lever 32 with sliding connection between the support frame 31, actuating lever 32 is fixed in first electric hydraulic cylinder 33, actuating lever 32 deviates from the one end of first electric hydraulic cylinder 33 is equipped with pressure boost stopper 34, the loop configuration pressure boost stopper 34 with sliding connection between the fixed cover 22, pressure boost stopper 34 with hold the cavity between the fixed cover 22 with switch on between the sealing washer 21.

Specifically, the first limiting structure 1 includes a base 11, a limiting rod 12, a latch 13, a transmission rod 14, a clamping block 15, a roller 16 and a sliding groove 17, wherein a plurality of transmission rods 14 are arranged at the bottom end of the pressurizing plug 34 in a circumferential array, the sliding groove 17 is arranged at the bottom end of the transmission rod 14 in an inclined manner, the roller 16 is arranged in the sliding groove 17 in a rolling manner, the roller 16 is rotatably connected with the limiting rod 12, an included angle between the limiting rod 12 and the transmission rod 14 is an acute angle, the transmission rod 14 is slidably connected with the fixing sleeve 22, a plurality of latch 13 in an inclined manner are arranged at one end of the transmission rod 14 away from the roller 16, the base 11 is fixed on the fixing sleeve 22, the clamping block 15 is arranged on the base 11, and the clamping block 15 is clamped with the fixing sleeve 22; the monitoring structure 4 for monitoring the gas extraction negative pressure and extraction concentration of the directional long drill hole is provided with the first limiting structure 1 for limiting, the first limiting structure 1 is provided with the sealing structure 2 for sealing, and the monitoring structure 4 is arranged inside the sealing structure 2; be equipped with on seal structure 2 and be used for the driven drive structure 3, and then be convenient for pass through drive structure 3 drive seal structure 2 inflation is contradicted with long drilling, makes seal structure 2 and the leakproofness between the long drilling is better, simultaneously drive structure 3 drive first limit structure 1 makes the lateral wall of the long drilling of the firm conflict of first limit structure 1 makes first limit structure 1's inside monitoring structure 4's connection is more firm, promptly: firstly, fixing a plurality of monitoring sensors 48 inside the drill hole 47, then extending the fixing sleeve 22 and the base 11 to the end of the drill hole 47, then switching on the first electric hydraulic cylinder 33, driving the driving rod 32 and the supporting frame 31 to slide by the extension of the first electric hydraulic cylinder 33, driving the pressurizing plug 34 to slide inside the fixing sleeve 22 by the driving rod 32, so that the accommodating cavity between the pressurizing plug 34 and the fixing sleeve 22 is reduced, air inside the pressurizing plug 34 and the fixing sleeve 22 enters the inside of the sealing ring 21, the sealing ring 21 gradually expands and butts against the side wall of the drill hole 47, and meanwhile, the cross section of the sealing ring 21 is of a wave-shaped structure, so that the side wall of the drill hole 47 can be sealed in a multi-level manner, and the sealing performance between the fixing sleeve 22 and the drill hole 47 is better, meanwhile, the pressurizing plug 34 slides to drive the transmission rod 14 and the fixing sleeve 22 to slide, the sliding groove 17 on the transmission rod 14 guides the roller 16, so that the limiting rod 12 slides obliquely away from the axial direction of the fixing sleeve 22, so that the limiting rods 12 arranged in a circumferential array are abutted against the side wall of the drilling hole 47, and the tensile strength of the fixing sleeve 22 is further enhanced, meanwhile, the limiting rod 12 and the latch 13 are both arranged obliquely, so that when the limiting rod 12 abuts against the drill hole 47, acting force towards the inside of the drill hole 47 is applied to the transmission rod 14, thereby the stability of the fixing sleeve 22 is better, and the stress area and the friction force thereof are increased, meanwhile, the base 11 is provided with the clamping block 15, the fixture block 15 is engaged with the fixing sleeve 22, so that the base 11 is more stably and efficiently mounted.

Specifically, the second limiting structure 5 includes an air pipe 51, a second electric hydraulic cylinder 52, a piston 53, an accommodating box 54, two return springs 55, a collar 56 and a gear 57, the accommodating box 54 is disposed on a side wall of the supporting frame 31, the L-shaped piston 53 is disposed inside the accommodating box 54, one end of the second electric hydraulic cylinder 52 is fixed to the supporting frame 31, the other end of the second electric hydraulic cylinder 52 is fixed to the piston 53, one return spring 55 is disposed inside the accommodating box 54, the collar 56 is disposed at an end of the return spring 55, the collar 56 is engaged with the gear 57, and the air pipe 51 is disposed on the accommodating box 54.

Specifically, the angle adjusting structure 6 includes a first supporting rod 61, a second supporting rod 62, a first rotating shaft 63 and a second rotating shaft 64, the first rotating shaft 63 is connected to the first supporting rod 61 and the containing box 54 in a penetrating manner, the first supporting rod 61 is fixed to the first rotating shaft 63, the first rotating shaft 63 is connected to the containing box 54 in a rotating manner, one gear 57 is provided at an end of the first rotating shaft 63, the collar 56 engaged with the one gear 57 at the end of the first rotating shaft 63 is connected to the containing box 54 in a sliding manner, the second rotating shaft 64 is connected to the first supporting rod 61 in a rotating manner, the second supporting rod 62 is fixed to the second rotating shaft 64, another gear 57 is provided at an end of the second rotating shaft 64, and another collar 56 is connected to the first supporting rod 61 in a sliding manner, the other return spring 55 is fixed to the first support rod 61, the other end of the air tube 51 is conducted to the collar 56 and the first support rod 61, and the pressure display panel 45 is rotatably connected to the second support rod 62; the driving structure 3 is provided with the second limiting structure 5 for limiting the angle adjusting structure 6; second limit structure 5 connect in be used for adjusting the angle of monitoring angle regulation structure 6, just angle regulation structure 6 connect in monitoring structure 4, and then be convenient for pass through the angle of monitoring is adjusted to angle regulation structure 6, makes to look over monitoring data convenient and fast more, promptly: when the second electric hydraulic cylinder 52 contracts, the piston 53 and the storage box 54 are driven to slide, so that the accommodating cavity between the piston 53 and the storage box 54 is enlarged, then the pressure of the collar 56 to the end part is reduced, the force is exerted by the return spring 55 to enable the collar 56 to be disengaged from the gear 57, then the second support rod 62 drives the second rotating shaft 64 to rotate, the first support rod 61 drives the first rotating shaft 63 to rotate, so that the angle of the space at the end part of the second support rod 64 is adjusted, then the second electric hydraulic cylinder 52 extends, the piston 53 is driven to slide with the storage box 54, so that the accommodating cavity between the piston 53 and the storage box 54 is reduced, then the pressure of the collar 56 to the end part is increased, and the force is exerted by the pressure to enable the collar 56 to be engaged with the gear 57, then make second bracing piece 62 with first bracing piece 61 is spacing, and then is convenient for adjust the space angle of pressure display screen 45 makes the data of looking over convenient and fast more.

The utility model discloses when using, at first be fixed in the inside of drilling 47 with a plurality of monitoring sensor 48, the process of arranging of sensor as follows, combine the colliery to take out and take out the drilling reality, utilize drilling screen pipe technique down, fix monitoring sensor 48 on the screen pipe earlier, many 3m of length of screen pipe are one, and the section by section is connected when the screen pipe is down, from this, in sending into drilling 47 with a plurality of monitoring sensor 48 in proper order along with deepening of screen pipe, controls monitoring sensor 48's mounted position from this.

Then the fixing sleeve 22 and the base 11 are extended to the end of the bore 47, then the first electric hydraulic cylinder 33 is powered on, the first electric hydraulic cylinder 33 extends to drive the driving rod 32 and the supporting frame 31 to slide, the driving rod 32 drives the pressurizing plug 34 to slide in the fixing sleeve 22, so that the accommodating cavity between the pressurizing plug 34 and the fixing sleeve 22 is reduced, air in the pressurizing plug 34 and the fixing sleeve 22 enters the sealing ring 21, the sealing ring 21 gradually expands to abut against the side wall of the bore 47, meanwhile, the cross section of the sealing ring 21 is of a wave-shaped structure, so that the side wall of the bore 47 is conveniently sealed in multiple layers, the sealing performance between the fixing sleeve 22 and the bore 47 is better, the pressurizing plug 34 drives the transmission rod 14 and the fixing sleeve 22 to slide when sliding, the chute 17 on the transmission rod 14 guides the roller 16, and the limiting rod 12 slides obliquely away from the axis direction of the fixing sleeve 22, the limiting rods 12 arranged in the circumferential array are enabled to abut against the side wall of the drill hole 47, the tensile strength of the fixing sleeve 22 is further enhanced, meanwhile, the limiting rods 12 and the clamping teeth 13 are obliquely arranged, acting force towards the interior of the drill hole 47 is applied to the transmission rod 14 when the limiting rods 12 abut against the drill hole 47, the stability of the fixing sleeve 22 is further improved, the stress area and the friction force of the fixing sleeve are increased, meanwhile, the clamping blocks 15 are arranged on the base 11, and the clamping blocks 15 are clamped with the fixing sleeve 22, so that the base 11 is more stable and efficient to install; aiming at the characteristics of long drilling, a plurality of monitoring sensors 48 are arranged at different positions of the drill hole 47 (firstly, a parameter fixed-point measuring device in the drill hole 47 is used for carrying out field test on the drilling extraction negative pressure distribution condition, and the positions 50m, 200m, 350m, 500m, 600m, 700m, 800m, 900m, 950m and 1000m (distributed at the positions of the hole opening → the hole bottom) away from the hole opening are arranged.

And then, by utilizing digital equipment, a central processing unit is utilized to receive detection data of the monitoring sensor 48 and display the data on the pressure display screen 45, the central processing signal is connected with a gas extraction system of the coal mine, and monitoring data of different positions of the drill hole are displayed in the gas extraction system in real time, so that the data observation of the drill hole by site workers can be realized, the working state of the drill hole can be adjusted, and a monitoring center of the coal mine can also carry out integral monitoring on the drill hole of the whole mine in real time, and further adjust gas extraction parameters.

Finally, the extraction negative pressure is adjusted in time by using a valve; after the matching between the clean long drill hole and the extraction negative pressure, the reasonable directional long drill hole length and the reasonable gas extraction parameters can be determined and adjusted according to certain geological conditions; after the reasonable directional long drill hole length is determined, only the arrangement position of the monitoring sensor needs to be adjusted, the whole hole section of the drill hole 47 is monitored, data such as gas concentration and extraction negative pressure at different positions such as the bottom and the middle of the drill hole 47 are obtained, the dynamic change situation of the extraction negative pressure of the long drill hole along the length of the drill hole can be solved, the gas information of the whole hole section of the long drill hole is mastered, the monitoring sensor 48 displays the gas concentration and the extraction negative pressure inside the drill hole 47 on the pressure display screen 45 in a digital mode, the orifice negative pressure can be dynamically adjusted at an orifice switch according to the data, the real-time display of the gas parameter and the extraction negative pressure inside the drill hole is realized, the optimal gas extraction effect is achieved, the detection of the gas concentration, the extraction negative pressure and other parameters at different positions inside the long drill hole is realized, the operation is simple, and the application is; when the second electric hydraulic cylinder 52 contracts, the piston 53 and the containing box 54 are driven to slide, so that the containing cavity between the piston 53 and the containing box 54 is enlarged, then the pressure of the clamp ring 56 to the end part is reduced, the force of the return spring 55 makes the collar 56 and the gear 57 not engaged, and then the second support bar 62 drives the second rotating shaft 64 to rotate, the first support bar 61 drives the first rotating shaft 63 to rotate, and further the angle of the space at the end of the second support bar 64 is adjusted, then the second electric hydraulic cylinder 52 extends to drive the piston 53 and the containing box 54 to slide, so that the containing cavity between the piston 53 and the containing box 54 is reduced, then the pressure of the clamp ring 56 to the end part is increased, under the action of pressure, the clamping ring 56 is clamped with the gear 57, then the second supporting rod 62 is limited with the first supporting rod 61, and then be convenient for adjust the space angle of pressure display screen 45, make and look over data convenient and fast more.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (7)

1. The monitoring equipment for the gas extraction negative pressure and the extraction concentration of the directional long drill hole is characterized by comprising a first limiting structure (1), a sealing structure (2), a driving structure (3), a monitoring structure (4), a second limiting structure (5) and an angle adjusting structure (6); the monitoring structure (4) for monitoring the gas extraction negative pressure and the extraction concentration of the directional long drill hole is provided with the first limiting structure (1) for limiting, the first limiting structure (1) is provided with the sealing structure (2) for sealing, and the monitoring structure (4) is arranged inside the sealing structure (2); the sealing structure (2) is provided with the driving structure (3) for driving, and the driving structure (3) is provided with the second limiting structure (5) for limiting the angle adjusting structure (6); the second limiting structure (5) is connected to the angle adjusting structure (6) for adjusting the angle of monitoring, and the angle adjusting structure (6) is connected to the monitoring structure (4).

2. The directional long-borehole gas extraction negative pressure and extraction concentration monitoring equipment according to claim 1, characterized in that: the monitoring structure (4) comprises an extraction pipe (41), a three-way pipe (42), a hose (43), a valve (44), a pressure display screen (45), a coal bed (46), a drill hole (47) and monitoring sensors (48), wherein the extraction pipe (41) penetrates through the first limiting structure (1), one side, facing the inside of the drill hole, of the first limiting structure (1) is provided with a hole sealing device (7), the extraction pipe (41) penetrates through the hole sealing device (7) to go deep into the drill hole, one end of the extraction pipe (41) is provided with the three-way pipe (42), two ends, deviating from the extraction pipe (41), of the three-way pipe (42) are respectively provided with the valve (44), the pressure display screen (45) is arranged on the valve (44), the extraction pipe (41) is communicated with the drill hole (47) in the coal bed (46), and a plurality of monitoring sensors (48) are arranged in the drill hole (47), a plurality of the monitoring sensors (48) are arranged at intervals along the length direction of the drilling hole (47), and the monitoring sensors (48) are electrically connected with the pressure display screen (45).

3. The directional long-borehole gas extraction negative pressure and extraction concentration monitoring equipment according to claim 2, characterized in that: the sealing structure (2) comprises a sealing ring (21) and a fixing sleeve (22), the pumping pipe (41) is arranged inside the fixing sleeve (22), and the sealing ring (21) with a wave-shaped cross section and a containing cavity is welded to the outside of the fixing sleeve (22).

4. The directional long-borehole gas extraction negative pressure and extraction concentration monitoring equipment according to claim 3, characterized in that: drive structure (3) include support frame (31), actuating lever (32), first electric hydraulic cylinder (33) and pressure boost stopper (34), support frame (31) are fixed in the top of fixed cover (22), the top of first electric hydraulic cylinder (33) is fixed in support frame (31), actuating lever (32) with sliding connection between support frame (31), actuating lever (32) are fixed in first electric hydraulic cylinder (33), actuating lever (32) deviate from the one end of first electric hydraulic cylinder (33) is equipped with pressure boost stopper (34), the loop configuration pressure boost stopper (34) with sliding connection between fixed cover (22), pressure boost stopper (34) with hold the cavity between fixed cover (22) with switch on between sealing washer (21).

5. The directional long-borehole gas extraction negative pressure and extraction concentration monitoring equipment according to claim 4, characterized in that: the first limiting structure (1) comprises a base (11), a limiting rod (12), a latch (13), a transmission rod (14), a clamping block (15), a roller (16) and a sliding groove (17), the bottom end circumference array of the pressurizing plug (34) is provided with a plurality of transmission rods (14), the bottom end of each transmission rod (14) is provided with the sliding groove (17) which is obliquely arranged, the roller (16) is arranged in the sliding groove (17) and is in rolling connection with the limiting rod (12), an included angle between each limiting rod (12) and each transmission rod (14) is an acute angle, the transmission rods (14) are in sliding connection with the fixing sleeves (22), one end of each transmission rod (14) deviating from the corresponding roller (16) is provided with the latch (13) which is obliquely arranged, and the base (11) is fixed on the fixing sleeves (22), the base (11) is provided with the clamping block (15), and the clamping block (15) is clamped with the fixed sleeve (22).

6. The directional long-borehole gas extraction negative pressure and extraction concentration monitoring equipment according to claim 4, characterized in that: the second limiting structure (5) comprises an air pipe (51), a second electric hydraulic cylinder (52), a piston (53), a storage box (54), two reset springs (55), a clamping ring (56) and a gear (57), wherein the storage box (54) is arranged on the side wall of the support frame (31), the L-shaped piston (53) is arranged inside the storage box (54), one end of the second electric hydraulic cylinder (52) is fixed on the support frame (31), the other end of the second electric hydraulic cylinder (52) is fixed on the piston (53), one reset spring (55) is arranged inside the storage box (54), the clamping ring (56) is arranged at the end part of the reset spring (55), the clamping ring (56) is meshed with the gear (57), and the air pipe (51) is arranged on the storage box (54).

7. The directional long-borehole gas extraction negative pressure and extraction concentration monitoring equipment according to claim 6, characterized in that: the angle adjusting structure (6) comprises a first supporting rod (61), a second supporting rod (62), a first rotating shaft (63) and a second rotating shaft (64), the first rotating shaft (63) is connected with the first supporting rod (61) and the containing box (54) in a penetrating way, the first supporting rod (61) is fixed on the first rotating shaft (63), the first rotating shaft (63) is connected with the containing box (54) in a rotating way, one gear (57) is arranged at the end part of the first rotating shaft (63), the clamping ring (56) meshed with the gear (57) at one end part of the first rotating shaft (63) is connected with the containing box (54) in a sliding way, the second rotating shaft (64) is connected with the first supporting rod (61) in a rotating way, the second supporting rod (62) is fixed on the second rotating shaft (64), the other gear (57) is arranged at the end part of the second rotating shaft (64), the other one of the clamping ring (56) is connected with the first supporting rod (61) in a sliding mode, the other one of the return springs (55) is fixed to the first supporting rod (61), the other end of the air pipe (51) is communicated with the clamping ring (56) and the first supporting rod (61), and the pressure display screen (45) is connected with the second supporting rod (62) in a rotating mode.

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