Continuous conveying device

Abstract

The utility model discloses a continuous conveying device, which relates to the technical field of coal mine roadway engineering and comprises a support, an angle adjusting mechanism, a driving mechanism, a conveying mechanism, a guide runway, a high-pressure hose and a hole packer. The driving mechanism, the conveying mechanism and the guiding runway are all installed on the support, and the angle of the driving mechanism, the conveying mechanism and the guiding runway can be adjusted through the angle adjusting mechanism. The hole packer can be installed at the movable end of the high-pressure hose, and a hydraulic fracturing hole is formed in the hole packer. The high-pressure hose and the hole packer can penetrate through the guiding runway, the driving mechanism can drive the conveying mechanism to operate, and the conveying mechanism can drive the high-pressure hose to be conveyed along the guiding runway. The utility model has the advantage that the construction efficiency of hydraulic fracturing is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine shaft and tunnel engineering, in particular to a continuous conveying device. Background Art

[0002] At present, the commonly used method for hydraulic fracturing in mines is to install the hydraulic fracturing sealer on the special grouting iron pipe after the hydraulic drill is drilled, and the hydraulic fracturing sealer is pushed into the borehole by the hydraulic drill in combination with the special grouting iron pipe. After the hydraulic fracturing sealer reaches the specified depth, hydraulic fracturing is carried out. After the hydraulic fracturing is completed, the special grouting iron pipe is pulled out of the borehole by the hydraulic drill and the hydraulic fracturing sealer is removed. The patent document with publication number CN102852522A discloses a method for hydraulic fracturing of coal mine tunnels, which first uses a drill bit to drill out the fracturing section, then pushes the sealer with a water injection pipe into the fracturing section, connects the high-pressure water pump to the water injection pipe, and pressurizes the sealer until the sealer is fracturing.

[0003] The existing hydraulic fracturing methods have the following disadvantages: (1) When using a drilling rig with a special grouting iron pipe to push the hydraulic fracturing sealer into and out of the borehole, workers are required to carry the special grouting iron pipes one by one to the bottom of the drilling rig for installation. After the construction is completed, the special grouting iron pipes are removed one by one, which has low construction efficiency, high labor intensity, and high labor costs. In addition, the frequent transportation of the special grouting iron pipes by workers is dangerous and poses a safety hazard; (2) It is difficult to hydraulically fractur e holes at different locations; (3) After drilling a hole, the hydraulic drill cannot continue to construct the next hole, but is used as a hydraulic fracturing conveyor, and the drilling rig is inefficient. Utility Model Content

[0004] The technical problem to be solved by the utility model is how to improve the construction efficiency of hydraulic fracturing.

[0005] The utility model solves the above technical problems through the following technical means: a continuous conveying device, including a bracket, an angle adjustment mechanism, a driving mechanism, a conveying mechanism, a guide runway, a high-pressure hose and a hole sealer; the driving mechanism, the conveying mechanism and the guide runway are all installed on the bracket and can adjust the angle through the angle adjustment mechanism; the hole sealer can be installed at the movable end of the high-pressure hose, and the hole sealer is provided with a hydraulic fracturing hole; the high-pressure hose and the hole sealer can pass through the guide runway, the driving mechanism can drive the conveying mechanism to operate, and the conveying mechanism can drive the high-pressure hose to be transported along the guide runway. The utility model utilizes a high-pressure hose to replace the traditional special grouting iron pipe, and utilizes a driving mechanism, a conveying mechanism and a guide runway to realize the continuous conveyance of the high-pressure hose when installing a hole sealer. There is no need for manual handling and loading and unloading, which reduces labor intensity, saves labor costs, greatly improves the construction efficiency of hydraulic fracturing, eliminates safety hazards, and ensures the safety of operators; the conveying mechanism and the guide runway can adjust the angle to realize hydraulic fracturing of holes in different positions such as the top and the side; hydraulic fracturing does not occupy the drilling rig, and the drilling rig can continue to construct the next hole after drilling, thereby improving the use efficiency of the drilling rig; it can be used not only for the continuous conveyance of high-pressure hoses, but also for the continuous conveyance of cables, etc., and has a wide range of applications.

[0006] As an optimized technical solution, a pressure sensor and a flow sensor are installed on the high-pressure hose, and both the pressure sensor and the flow sensor are connected to the acquisition system. The pressure sensor and the flow sensor can detect the liquid pressure and flow rate in real time during the fracturing process and collect them through the acquisition system, so as to adjust the liquid flow rate and pressure in time.

[0007] As an optimized technical solution, a wireless transmission borehole imager is installed on the sealer, and a displacement sensor is provided on the wireless transmission borehole imager. The wireless transmission borehole imager and the displacement sensor can image and compare the borehole during the back and forth transportation of the sealer, and further guide the fracturing process.

[0008] As an optimized technical solution, the continuous conveying device also includes a liquid booster pump and an emulsification pump arranged at the construction site, and the liquid booster pump and the emulsification pump can be connected to the high-pressure hose together. For the first time, the existing emulsification pump at the working face is used as the initial power for hydraulic fracturing, and the liquid booster pump is used as the secondary boosting system, which can increase the fracturing pressure from the initial 30Mpa provided by the emulsification pump to 60Mpa, realizing large-flow, high-pressure continuous fracturing, and saving the cost investment of high-pressure pump equipment.

[0009] As an optimized technical solution, the continuous conveying device further includes a runway support mechanism, the runway support mechanism adopts a telescopic rod, and one end of the runway support mechanism is fixedly connected to the middle of the guide runway.

[0010] As an optimized technical solution, the bracket includes a base, an equipment mounting plate, a movable rod and a runway mounting plate; the lower part of the equipment mounting plate is hinged to the top rear side of the base, one end of the movable rod is hinged to the top front side of the base, and the other end of the movable rod is hinged to the upper part of the equipment mounting plate; the driving mechanism, the conveying mechanism and the runway mounting plate are all installed on the equipment mounting plate, and the guide runway is installed on the runway mounting plate; the angle adjustment mechanism includes a guide rod, a first adjustment rod and a second adjustment rod; the guide rod is fixedly connected to the base, one end of the first adjustment rod is movably connected to the guide rod, one end of the second adjustment rod is hinged to the other end of the first adjustment rod, and the other end of the second adjustment rod is hinged to the base.

[0011] As an optimized technical solution, the bracket also includes a support plate and a pillar; a plurality of support plates are fixedly connected around the bottom of the base, and a pillar is fixedly connected to the top surface of each support plate; the pillar includes a sleeve, a telescopic column and a connecting pin, the telescopic column is inserted into the interior of the sleeve, and the sleeve and the telescopic column are each provided with a plurality of connecting holes arranged at intervals along their length direction, and the connecting pin passes through the corresponding connecting holes on the sleeve and the telescopic column to fix them together.

[0012] As an optimized technical solution, the driving mechanism includes a pneumatic motor and a reducer, the output end of the pneumatic motor is connected to the input end of the reducer, and the output end of the reducer is connected to the input end of the conveying mechanism.

[0013] As an optimized technical solution, the conveying mechanism includes a conveyor belt, a fixed frame, a roller frame, rollers and a height adjustment mechanism; the roller frame is installed on the fixed frame through the height adjustment mechanism and is located directly above the conveyor belt, the height adjustment mechanism can adjust the height of the roller frame relative to the conveyor belt, and a plurality of rollers are rotatably connected to the roller frame. The clamping degree of the roller and the conveyor belt on the high-pressure hose can be adjusted, and the high-pressure hose is conveyed by friction, which can be used not only for continuous conveying of high-pressure hoses, but also for continuous conveying of cables, etc., and has a wide range of applications.

[0014] As an optimized technical solution, the continuous conveying device further includes a limiting mechanism, and the limiting mechanism includes U-shaped clips respectively arranged on the outer sides of both ends of the conveying mechanism.

[0015] The advantages of the utility model are:

[0016] 1. The utility model utilizes a high-pressure hose to replace the traditional special grouting iron pipe, and utilizes a driving mechanism, a conveying mechanism and a guide runway to realize the continuous conveying of the high-pressure hose when installing the hole sealer. There is no need for manual handling and loading and unloading, which reduces labor intensity, saves labor costs, greatly improves the construction efficiency of hydraulic fracturing, eliminates safety hazards, and ensures the safety of operators.

[0017] 2. The conveying mechanism and guide runway can adjust the angle to achieve hydraulic fracturing of holes in different positions such as the top and side.

[0018] 3. Hydraulic fracturing does not occupy the drilling rig. After drilling a hole, the drilling rig can continue to construct the next hole, which improves the efficiency of the drilling rig.

[0019] 4. Pressure sensors and flow sensors can detect the liquid pressure and flow in real time during the fracturing process and collect the data through the acquisition system, so as to adjust the liquid flow and pressure in time.

[0020] 5. The wireless transmission borehole imager and displacement sensor can image and compare the borehole during the back and forth transportation of the sealer, further guiding the fracturing process.

[0021] 6. For the first time, the existing emulsification pump at the working face is used as the initial power for hydraulic fracturing, and the liquid booster pump is used as the secondary booster system. The fracturing pressure can be increased from the initial 30Mpa provided by the emulsification pump to 60Mpa, realizing large-flow, high-pressure continuous fracturing and saving the cost of high-pressure pump equipment.

[0022] 7. It can be used not only for continuous transportation of high-pressure hoses, but also for continuous transportation of cables, etc., with a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic structural diagram of the continuous conveying device of the utility model embodiment without the high-pressure hose and the hole sealer installed.

[0024] Figure 2 This is a schematic structural diagram of the continuous conveying device of an embodiment of the utility model without the support pillars.

[0025] Figure 3 It is a structural schematic diagram of the angle adjustment mechanism of an embodiment of the utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the conveying mechanism of an embodiment of the utility model without part of the fixing frame.

[0027] Figure 5 It is a schematic diagram of the structure of the emulsification pump, pressure sensor, flow sensor, acquisition system, wireless transmission drilling imager and displacement sensor of the embodiment of the utility model. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described in combination with the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the protection scope of the utility model.

[0029] like Figures 1 to 5 As shown, an embodiment of the utility model discloses a continuous conveying device, including a bracket 1, an angle adjustment mechanism 2, a driving mechanism 3, a conveying mechanism 4, a guide runway 5, a runway support mechanism 6, a limiting mechanism 7, a high-pressure hose 8, a sealer 9 and a liquid booster pump (not shown), and also includes an emulsification pump 101 arranged at the construction site, a pressure sensor 102, a flow sensor 103 and a collection system 104 arranged on the high-pressure hose 8, and a wireless transmission drilling imager 105 and a displacement sensor 106 arranged on the sealer 9.

[0030] The driving mechanism 3, the conveying mechanism 4, the guide runway 5 and the limiting mechanism 7 are all installed on the bracket 1 and can adjust the angle through the angle adjustment mechanism 2. The runway support mechanism 6 is installed on the guide runway 5; the sealer 9 can be installed on the movable end of the high-pressure hose 8, and the sealer 9 is provided with a hydraulic fracturing hole; the high-pressure hose 8 and the sealer 9 can pass through the guide runway 5, the driving mechanism 3 can drive the conveying mechanism 4 to operate, the conveying mechanism 4 can drive the high-pressure hose 8 to be transported along the guide runway 5, and the limiting mechanism 7 can limit the position of the high-pressure hose 8 relative to the conveying mechanism 4; the liquid booster pump and the emulsification pump 101 can be connected to the high-pressure hose 8 through a tee.

[0031] The bracket 1 includes a base 11, a support plate 12, an equipment mounting plate 13, a movable rod 14, a runway mounting plate 15 and a pillar 16; the base 11 and the movable rod 14 are made of square steel, the support plate 12, the equipment mounting plate 13 and the runway mounting plate 15 are made of steel plates, and the pillar 16 is made of steel pipe; four support plates 12 are fixedly connected around the bottom of the base 11, and the top surface of each support plate is fixedly connected to the pillar 16; the pillar 16 includes a connecting plate, a sleeve, a telescopic column and a connecting pin, the telescopic column is inserted into the sleeve, and the sleeve and the telescopic column are provided with a plurality of connecting holes arranged at intervals along the length direction thereof, and the connecting pin is provided with a plurality of connecting holes arranged at intervals along the length direction thereof. The pin passes through the corresponding connecting holes on the sleeve and the telescopic column to fix them together; the lower part of the equipment mounting plate 13 is hinged to the top rear side of the base 11, one end of the movable rod 14 is hinged to the top front side of the base 11, and the other end of the movable rod 14 is hinged to the upper part of the equipment mounting plate 13; there are two movable rods 14, and the two movable rods 14 are respectively arranged on the left and right sides of the equipment mounting plate 13; the driving mechanism 3, the conveying mechanism 4 and the limiting mechanism 7 are all installed on the equipment mounting plate 13; the runway mounting plate 15 is fixedly connected to the upper part of the equipment mounting plate 13, and the guide runway 5 is installed on the runway mounting plate 15 through a flange.

[0032] The angle adjustment mechanism 2 includes a guide rod 21, a first adjustment rod 22 and a second adjustment rod 23; the guide rod 21 is fixedly connected to the base 11, one end of the first adjustment rod 22 is movably connected to the guide rod 21, one end of the second adjustment rod 23 is hinged to the other end of the first adjustment rod 22, and the other end of the second adjustment rod 23 is hinged to the base 11; two second adjustment rods 23 are provided, and the two second adjustment rods 23 are respectively arranged on the left and right sides of the first adjustment rod 22 and form a triangular structure with the base 11.

[0033] The driving mechanism 3 includes a pneumatic motor 31 and a reducer 32 . The output end of the pneumatic motor 31 is connected to the input end of the reducer 32 , and the output end of the reducer 32 is connected to the input end of the conveying mechanism 4 .

[0034] The conveying mechanism 4 includes a conveyor belt 41, a fixed frame 42, a roller frame 43, a roller 44 and a height adjustment mechanism 45; the conveyor belt 41 is installed on the equipment mounting plate 13 and its input end is connected to the output end of the reducer 32; the fixed frame 42 is fixedly connected to the equipment mounting plate 13, the roller frame 43 is installed on the fixed frame 42 through the height adjustment mechanism 45 and is located directly above the conveyor belt 41, the height adjustment mechanism 45 can adjust the height of the roller frame 43 relative to the conveyor belt 41, and a plurality of rollers 44 arranged at intervals along the conveying direction of the conveyor belt 41 are rotatably connected to the roller frame 43; the height adjustment mechanism 45 includes an adjusting rod and a handle, the middle part of the adjusting rod is threadedly connected to the fixed frame 42, the lower part of the adjusting rod is rotatably connected to the roller frame 43, and the handle is installed on the upper part of the adjusting rod; rotating the handle can make the adjusting rod rise and fall in the threaded hole of the fixed frame 42, thereby adjusting the height of the roller frame 43 relative to the conveyor belt 41, and realizing the clamping degree of the roller 44 and the conveyor belt 41 on the high-pressure hose 8.

[0035] The guide runway 5 is made of square steel, and the runway support mechanism 6 is made of a telescopic rod. One end of the runway support mechanism 6 is fixedly connected to the middle of the guide runway 5 .

[0036] The limiting mechanism 7 includes U-shaped clamps respectively arranged outside the two ends of the conveying mechanism 4 , and the high-pressure hose 8 passes through the middle of the U-shaped clamps to limit the position of the high-pressure hose 8 relative to the conveying mechanism 4 .

[0037] The high-pressure hose 8 adopts a DN25 special high-pressure rubber hose with a length of 35 meters and a pressure resistance of 60Mpa. A tank chain or other devices are installed on the high-pressure hose 8 to achieve the effect of improving the rigidity of the hose.

[0038] The hole sealer 9 adopts a two-blocking and one-injection hole sealer, and the hole sealer 9 is pressed by a steel pipe and a rubber hose, with a diameter of 73 mm and a length of 2.5 m.

[0039] A pressure sensor 102 and a flow sensor 103 are installed on the high-pressure hose 8. The pressure sensor 102 and the flow sensor 103 are both connected to the acquisition system 104. The pressure sensor 102 and the flow sensor 103 can detect the pressure and flow of the liquid in the fracturing process in real time and collect the data through the acquisition system 104, so as to adjust the liquid flow and pressure in time. A wireless transmission drilling imager 105 is installed on the sealer 9. A displacement sensor 106 is provided on the wireless transmission drilling imager 105. The wireless transmission drilling imager 105 and The displacement sensor 106 can image and compare the borehole during the back and forth transportation of the sealer 9, further guiding the fracturing process; the wireless transmission borehole imager 105 is threadedly connected to the top of the sealer 9, and the wireless transmission borehole imager 105 can be removed for charging; the emulsification pump 101 adopts the existing BRW400 / 31.5 emulsification pump on the coal mining face, and the liquid booster pump adopts a pneumatic pump. The liquid booster pump can be connected to the underground compressed air pipeline, driving the gas inlet pressure to 0.3~0.8Mpa and the maximum outlet pressure to 65Mpa.

[0040] The method for using the continuous conveying device comprises the following steps:

[0041] Step 1: first connect the water supply pipeline at the work site to the liquid booster pump, and connect the liquid booster pump to the tee of the high-pressure hose 8; then transport the continuous conveying device to the construction site, adjust the length of the support 16, so that the support 16 cooperates with the support plate 12 to support between the bottom plate and the top plate of the work site; then connect the emulsification pump at the construction site to the tee of the high-pressure hose 8 through the DN25 liquid supply pipeline.

[0042] Step 2, after passing the high-pressure hose 8 through the limiting mechanism 7 and the conveying mechanism 4, install the hole sealer 9 on the movable end of the high-pressure hose 8 and pass it through the guide runway 5, adjust the angle of the bracket 1 through the angle adjustment mechanism 2, and adjust the angle of the guide runway 5, so that the guide runway 5 is placed in the drilled hole at a suitable angle to extend the hole opening, and at the same time adjust the length of the runway support mechanism 6 so that the lower end of the runway support mechanism 6 contacts the bottom plate of the work site to support the guide runway 5.

[0043] Step three, adjust the height of the roller frame 43 relative to the conveyor belt 41 to clamp the high-pressure hose 8 between the roller 44 and the conveyor belt 41, start the driving mechanism 3 to make the conveyor belt 41 run in the forward direction, and drive the high-pressure hose 8 along the guide runway 5 into the borehole through friction. The high-pressure hose 8 and the hole sealer 9 are pushed to the specified depth in the borehole.

[0044] Step 4: Liquid is supplied to the high-pressure hose 8 by the liquid booster pump and the emulsifier pump. The liquid enters the borehole through the sealer 9 to perform hydraulic fracturing.

[0045] Step 5. After the hydraulic fracturing is completed, turn off the liquid booster pump and the emulsification pump, stop the liquid supply, start the driving mechanism 3 to make the conveyor belt 41 run in the reverse direction, so that the high-pressure hose 8 with the sealer 9 is pulled out of the borehole along the guide runway 5, and then the sealer 9 is removed from the high-pressure hose 8 and the high-pressure hose 8 is taken out from the conveying runway 5.

[0046] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A continuous conveying device, characterized in that: It includes a bracket, an angle adjustment mechanism, a driving mechanism, a conveying mechanism, a guide runway, a high-pressure hose and a hole sealer; the driving mechanism, the conveying mechanism and the guide runway are all installed on the bracket and the angles can be adjusted by the angle adjustment mechanism; the hole sealer can be installed at the movable end of the high-pressure hose, and the hole sealer is provided with a hydraulic fracturing hole; the high-pressure hose and the hole sealer can pass through the guide runway, the driving mechanism can drive the conveying mechanism to operate, and the conveying mechanism can drive the high-pressure hose to be transported along the guide runway.

2. The continuous conveying device according to claim 1, characterized in that: A pressure sensor and a flow sensor are installed on the high-pressure hose, and both the pressure sensor and the flow sensor are connected to a collection system.

3. The continuous conveying device according to claim 1, characterized in that: A wireless transmission drilling imager is installed on the hole sealer, and a displacement sensor is arranged on the wireless transmission drilling imager.

4. The continuous conveying device according to claim 1, characterized in that: The continuous conveying device also includes a liquid booster pump and an emulsification pump arranged at the construction site, and the liquid booster pump and the emulsification pump can be connected to the high-pressure hose together.

5. The continuous conveying device according to claim 1, characterized in that: The continuous conveying device also includes a runway support mechanism, which adopts a telescopic rod, and one end of the runway support mechanism is fixedly connected to the middle part of the guide runway.

6. The continuous conveying device according to claim 1, characterized in that: The bracket includes a base, an equipment mounting plate, a movable rod and a runway mounting plate; the lower part of the equipment mounting plate is hinged to the top rear side of the base, one end of the movable rod is hinged to the top front side of the base, and the other end of the movable rod is hinged to the upper part of the equipment mounting plate; the driving mechanism, the conveying mechanism and the runway mounting plate are all mounted on the equipment mounting plate, and the guide runway is mounted on the runway mounting plate; the angle adjustment mechanism includes a guide rod, a first adjustment rod and a second adjustment rod; the guide rod is fixedly connected to the base, one end of the first adjustment rod is movably connected to the guide rod, one end of the second adjustment rod is hinged to the other end of the first adjustment rod, and the other end of the second adjustment rod is hinged to the base.

7. The continuous conveying device according to claim 6, characterized in that: The bracket also includes a support plate and a pillar; a plurality of support plates are fixedly connected around the bottom of the base, and a pillar is fixedly connected to the top surface of each support plate; the pillar includes a sleeve, a telescopic column and a connecting pin, the telescopic column is inserted into the interior of the sleeve, and the sleeve and the telescopic column are each provided with a plurality of connecting holes arranged at intervals along their length direction, and the connecting pin passes through the corresponding connecting holes on the sleeve and the telescopic column to fix them together.

8. The continuous conveying device according to claim 1, characterized in that: The driving mechanism comprises a pneumatic motor and a reducer, the output end of the pneumatic motor is connected to the input end of the reducer, and the output end of the reducer is connected to the input end of the conveying mechanism.

9. The continuous conveying device according to claim 1, characterized in that: The conveying mechanism includes a conveyor belt, a fixed frame, a roller frame, rollers and a height adjustment mechanism; the roller frame is installed on the fixed frame through the height adjustment mechanism and is located directly above the conveyor belt, the height adjustment mechanism can adjust the height of the roller frame relative to the conveyor belt, and a plurality of rollers are rotatably connected to the roller frame.

10. The continuous conveying device according to claim 9, characterized in that: The continuous conveying device further comprises a limiting mechanism, and the limiting mechanism comprises U-shaped clips respectively arranged on the outer sides of two ends of the conveying mechanism.

Images