Plasma torch for underground coal seam in-situ gasification
By introducing adjustment and cooling mechanisms into the plasma torch, automatic adjustment and efficient cooling of the plasma nozzle angle are achieved, solving the problems of instability and poor safety of manual operation in the prior art, and improving the safety and convenience of the equipment.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- INNER MONGOLIA RESEARCH INSTITUTE CHINA UNIVERSITY OF MINING AND TECHNOLOGY (BEIJING)
- Filing Date
- 2025-04-15
- Publication Date
- 2026-04-10
AI Technical Summary
The existing plasma torches used for in-situ gasification of underground coal seams cannot automatically adjust the output angle and direction of the plasma nozzles, resulting in unstable manual operation and potential safety hazards.
A plasma torch comprising an adjustment mechanism and a cooling mechanism was designed. The adjustment mechanism achieves nozzle angle adjustment through a motor-driven gear and worm gear structure, while the cooling mechanism cools the nozzle through circulating cooling water and a semiconductor refrigeration chip.
It improves the safety and convenience of plasma equipment, avoids contact with high-temperature parts, and enhances the cooling stability and safety of the nozzle.
Smart Images
Figure CN224111355U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to plasma equipment technical field especially relates to a kind of plasma torch for underground coal seam in situ gasification. BACKGROUND
[0002] Plasma torch (also known as plasma generator or plasma heating system) is a special equipment developed according to this principle. Plasma torch produces high-temperature gas through electric arc, and can work in oxidizing, reducing or inert environment, providing heat source for industrial furnaces with various functions such as gasification, cracking, reaction, melting and smelting.
[0003] However, the underground coal seam in situ gasification plasma torch in the prior art needs to be operated by the staff holding the fixed seat of the plasma torch in actual use, and the plasma equipment cannot automatically adjust the output angle and direction of the plasma torch. Since the temperature of the plasma torch is very high during operation, the stability and safety of manual operation cannot be guaranteed. Therefore, we design a kind of underground coal seam in situ gasification plasma torch. UTILITY MODEL CONTENT
[0004] The utility model discloses a kind of underground coal seam in situ gasification plasma torch, to realize the above-mentioned purpose, the utility model has adopted the following technical scheme:
[0005] A kind of underground coal seam in situ gasification plasma torch, including equipment base, the upper surface of the equipment base is provided with adjusting mechanism, the top of the adjusting mechanism is fixedly provided with fixed shell, the front of the fixed shell is fixedly provided with plasma torch pipe, the inside of the plasma torch pipe is provided with cooling mechanism;
[0006] The cooling mechanism includes cooling sleeve fixedly arranged on the inner wall of the plasma torch pipe, an annular cooling cavity is formed in the inside of the cooling sleeve, a circulating cooling box is fixedly arranged on the inner wall of the fixed shell, a plurality of semiconductor refrigeration pieces are embedded on the inner wall of the circulating cooling box, a first cooling water pipe is embedded on the surface of the circulating cooling box, a circulating water pump is fixedly connected to the surface of the circulating cooling box, the input end of the circulating water pump extends into the inside of the circulating cooling box, and the output end of the circulating water pump is fixedly connected to a second cooling water pipe, the output end of the first cooling water pipe and the output end of the second cooling water pipe extend into the inside of the annular cooling cavity.
[0007] In a preferred scheme, the inner wall of the circulating cooling box is fixedly connected to a flow guide baffle, a plurality of baffles are arranged on the upper surface of the flow guide baffle, the plurality of baffles are staggered and arranged between the upper surface of the flow guide baffle and the inner top wall of the circulating cooling box, the output port of the first cooling water pipe is located below the flow guide baffle, and the input end of the circulating water pump is located above the flow guide baffle.
[0008] In a preferred scheme, the surface of the fixed shell is provided with a plurality of heat dissipation holes, and the surface of the fixed shell is fixedly provided with a heat dissipation fan, the position of the heat dissipation fan corresponds to the heat dissipation hole, and the position of the heat dissipation hole corresponds to the heat dissipation end of the semiconductor refrigeration piece.
[0009] In a preferred scheme, the liquid inlet port of the first cooling water pipe and the liquid outlet port of the second cooling water pipe are distributed at the front and rear ends of the annular cooling cavity.
[0010] In a preferred scheme, the adjusting mechanism comprises an annular fixing seat, a positioning support column is rotatably arranged in the annular fixing seat, a gear ring is fixedly connected to the surface of the positioning support column, a drive box is fixedly arranged on the surface of the annular fixing seat, a first adjusting motor is fixedly installed in the drive box, a drive gear is fixed to the rotating shaft of the first adjusting motor, and the drive gear is engaged with the gear ring.
[0011] In a preferred scheme, an adjusting groove is formed in the top of the positioning support column, a movable shaft is rotatably connected to the inner wall of the adjusting groove, an adjusting block is fixedly arranged on the surface of the movable shaft, the top end of the adjusting block is fixedly connected to the lower surface of the fixed shell, a protection box is fixed to the side surface of the annular fixing seat, and a second adjusting motor is fixed to the inner wall of the protection box.
[0012] In a preferred scheme, a worm is fixedly connected to the output shaft of the second adjusting motor, one end of the movable shaft extends into the interior of the protection box and is fixedly connected with a worm wheel, and the worm is engaged with the worm wheel.
[0013] As can be seen from the above, the plasma torch for in-situ gasification of underground coal seams has the following technical effects.
[0014] Firstly, the adjusting mechanism is arranged on the surface of the plasma torch equipment, the adjusting mechanism is used for adjusting the horizontal and up-down angles of the spray pipe of the plasma equipment, manual operation is required, the high-temperature part of the equipment is avoided to be contacted by the staff, and the safety and convenience of the plasma equipment are improved.
[0015] Secondly, the circulating cooling mechanism is arranged in the interior of the plasma spray pipe, the cooling water in the annular cooling cavity of the cooling sleeve pipe is used for cooling the interior of the plasma spray pipe, so that a radial water-cooling interlayer is formed in the interior of the spray pipe, the circulating water pump is used for circulating the cooling water into the interior of the circulating cooling box, the semiconductor refrigeration piece in the circulating cooling box is used for continuously cooling the circulating cooling water, so that the circulating cooling water is kept in a low-temperature state, and the stability of the cooling of the plasma spray pipe is improved. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1The utility model provides a kind of underground coal seam in situ gasification with the front view structure schematic diagram of plasma torch.
[0017] Figure 2 The utility model provides a kind of underground coal seam in situ gasification with the rear view structure schematic diagram of plasma torch.
[0018] Figure 3 The utility model provides a kind of underground coal seam in situ gasification with the partial side section structure schematic diagram of plasma torch.
[0019] Figure 4 The utility model provides a kind of underground coal seam in situ gasification with the protection box internal structure schematic diagram of plasma torch.
[0020] Figure 5 For Figure 2 The enlarged structure schematic diagram of A place in middle.
[0021] In the drawing: 1, equipment base; 2, adjusting mechanism; 3, fixed shell; 4, plasma lance; 5, cooling mechanism; 6, cooling fan;
[0022] 201, annular fixed seat; 202, positioning support column; 203, gear ring; 204, drive box; 205, first adjusting motor; 206, drive gear; 207, adjusting groove; 208, adjusting block; 209, protection box; 210, second adjusting motor; 211, worm; 212, worm wheel;
[0023] 501, cooling jacket; 502, annular cooling cavity; 503, circulating cooling box; 504, semiconductor refrigeration sheet; 505, first cooling water pipe; 506, circulating water pump; 507, second cooling water pipe; 508, flow guide baffle; 509, baffle. DETAILED DESCRIPTION
[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.
[0025] Refer to Figure 1 And Figure 2 A kind of underground coal seam in situ gasification with plasma torch, including equipment base 1, the upper surface of equipment base 1 is provided with adjusting mechanism 2, the top of adjusting mechanism 2 is fixedly provided with fixed shell 3, the front of fixed shell 3 is fixedly provided with plasma lance 4, the inside of plasma lance 4 is provided with cooling mechanism 5.
[0026] It needs to be explained that cooling mechanism 5 can cool and cool plasma lance 4, and form heat protection structure in plasma lance 4.
[0027] It should be noted that the plasma torch 4 adopts a double-layer ceramic composite shell, the inner layer is conductive silicon nitride ceramic, and the outer layer is insulating alumina ceramic, wherein the conductive silicon nitride ceramic has high strength, especially hot-pressed silicon nitride, which has high strength, low density, and high temperature resistance; the insulating alumina ceramic has good conductivity, mechanical strength and high temperature resistance.
[0028] Referring to Figure 4 and Figure 5 In a preferred embodiment, the adjusting mechanism 2 comprises an annular fixing seat 201, a positioning support column 202 is rotatably arranged inside the annular fixing seat 201, a gear ring 203 is fixedly connected to the surface of the positioning support column 202, a drive box 204 is fixedly arranged on the surface of the annular fixing seat 201, a first adjusting motor 205 is fixedly installed inside the drive box 204, a drive gear 206 is fixed to the rotating shaft of the first adjusting motor 205, and the drive gear 206 is engaged with the gear ring 203.
[0029] Through the above technical scheme, the first adjusting motor 205 can drive the drive gear 206 to rotate, and then drive the gear ring 203 to rotate, and the gear ring 203 drives the positioning support column 202 to rotate horizontally inside the annular fixing seat 201, so as to conveniently adjust and position the horizontal angle of the plasma torch 4.
[0030] It should be noted that the top of the positioning support column 202 is provided with an adjusting groove 207, an movable shaft is rotatably connected to the inner wall of the adjusting groove 207, an adjusting block 208 is fixedly arranged on the surface of the movable shaft, the top end of the adjusting block 208 is fixedly connected with the lower surface of the fixed shell 3, a protection box 209 is fixedly arranged on the side surface of the annular fixing seat 201, and a second adjusting motor 210 is fixedly arranged on the inner wall of the protection box 209.
[0031] It should be further explained that the output shaft of the second adjusting motor 210 is fixedly connected with a worm 211, one end of the movable shaft extends into the interior of the protection box 209 and is fixedly connected with a worm wheel 212, and the worm 211 is engaged with the worm wheel 212.
[0032] Through the above technical scheme, the second adjusting motor 210 can drive the worm 211 to rotate, the worm 211 drives the worm wheel 212 to rotate, the worm wheel 212 drives the movable shaft to rotate inside the adjusting groove 207, and then drives the adjusting block 208 and the fixed shell 3 to rotate, so as to adjust and position the up-down inclination angle of the plasma torch 4.
[0033] It is worth mentioning that by arranging the adjusting mechanism 2 on the surface of the plasma torch device, the adjusting mechanism 2 can be used to adjust the horizontal and up-down angles of the torch of the plasma device, which needs to be manually operated, avoiding the high-temperature part of the device from being contacted by the staff, and improving the safety and convenience of the plasma device.
[0034] Referring to Figure 3 In a preferred embodiment, the cooling mechanism 5 comprises a cooling sleeve 501 fixedly arranged on the inner wall of the plasma torch 4, an annular cooling cavity 502 is formed in the inside of the cooling sleeve 501, a circulating cooling box 503 is fixedly arranged on the inner wall of the fixed shell 3, a semiconductor refrigeration sheet 504 is fixedly embedded on the inner wall of the circulating cooling box 503, a plurality of heat dissipation holes are formed on the surface of the fixed shell 3, and a heat dissipation fan 6 is fixedly installed on the surface of the fixed shell 3, the position of the heat dissipation fan 6 corresponds to the heat dissipation holes, and the position of the heat dissipation holes corresponds to the heat dissipation end of the semiconductor refrigeration sheet 504.
[0035] Through the above technical scheme, the semiconductor refrigeration sheet 504 is used to cool the cooling water in the circulating cooling box 503, and the heat dissipation fan 6 is used to dissipate heat from the heat dissipation surface of the semiconductor refrigeration sheet 504.
[0036] It should be noted that the surface of the circulating cooling box 503 is fixedly embedded with a water filling pipe, the water filling port of the water filling pipe extends to the outside of the fixed shell 3, and the port of the water filling pipe is threadedly connected with a sealing cover, so that the water filling pipe can be used to fill water into the inside of the circulating cooling box 503.
[0037] The surface of the circulating cooling box 503 is fixedly embedded with a first cooling water pipe 505, and the surface of the circulating cooling box 503 is fixedly connected with a circulating water pump 506, the input end of the circulating water pump 506 extends to the inside of the circulating cooling box 503, and the output end of the circulating water pump 506 is fixedly connected with a second cooling water pipe 507, and the ends of the first cooling water pipe 505 and the second cooling water pipe 507 away from the circulating cooling box 503 both extend to the inside of the annular cooling cavity 502.
[0038] It should be noted that by distributing the ports of the first cooling water pipe 505 and the second cooling water pipe 507 at the inner and outer ends of the annular cooling cavity 502, the first cooling water pipe 505 can be used to transport the circulating water in the annular cooling cavity 502 to the outside of the cooling sleeve 501, so as to form an annular circulation state in the annular cooling cavity 502, thereby improving the cooling effect.
[0039] It should be noted that the liquid inlet port of the first cooling water pipe 505 and the liquid outlet port of the second cooling water pipe 507 are distributed at the front and rear ends of the annular cooling cavity 502.
[0040] It needs to be further explained that the inner wall of the circulating cooling box 503 is fixedly connected with a flow guide baffle 508, the upper surface of the flow guide baffle 508 is provided with a plurality of baffles 509, the plurality of baffles 509 are staggered and distributed between the upper surface of the flow guide baffle 508 and the inner top wall of the circulating cooling box 503, the output port of the first cooling water pipe 505 is located below the flow guide baffle 508, and the input end of the circulating water pump 506 is located above the flow guide baffle 508.
[0041] It is worth noting that by arranging the cooling mechanism 5 inside the plasma jet pipe 4, the cooling water in the annular cooling cavity 502 of the cooling sleeve 501 can be used to cool the inside of the plasma jet pipe 4, thereby forming a radial water-cooled interlayer inside the plasma jet pipe 4, and the circulating water pump 506 can be used to circulate the cooling water into the inside of the circulating cooling box 503, and the semiconductor refrigeration sheet 504 in the circulating cooling box 503 can be used to continuously cool the circulating cooling water, so that the circulating cooling water remains in a low-temperature state, improving the stability of the cooling of the plasma jet pipe 4.
[0042] Working principle: when in use, the first adjusting motor 205 drives the driving gear 206 to rotate, the driving gear 206 drives the gear ring 203 to rotate, the gear ring 203 drives the positioning support column 202 to rotate inside the annular fixed seat 201, and drives the fixed shell 3 to rotate, so that the horizontal angle of the plasma jet pipe 4 can be adjusted and positioned, the second adjusting motor 210 drives the worm 211 to rotate, the worm 211 drives the worm gear 212 to rotate, the worm gear 212 drives the adjusting block 208 to rotate in the adjusting groove 207 of the positioning support column 202, and then drives the plasma jet pipe 4 to adjust the up-down angle, so that the staff can conveniently use the plasma jet pipe 4 to transport plasma gas in different directions in the coal mine, and the convenience of use is improved.
[0043] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited thereto. The substitution can be a partial structure, device, method step substitution, or a complete technical solution. According to the technical solution and the inventive concept of the present application, equivalent substitution or change should be covered within the protection scope of the present application.
Claims
1. A plasma torch for in-situ gasification of underground coal seams, comprising a device base (1), characterized in that, The upper surface of the device base (1) is provided with an adjusting mechanism (2), the top end of the adjusting mechanism (2) is fixedly provided with a fixed shell (3), the front surface of the fixed shell (3) is fixedly provided with a plasma jet pipe (4), and the inside of the plasma jet pipe (4) is provided with a cooling mechanism (5). The cooling mechanism (5) comprises a cooling sleeve (501) fixedly arranged on the inner wall of the plasma jet pipe (4), an annular cooling cavity (502) is formed in the inside of the cooling sleeve (501), a circulating cooling box (503) is fixedly arranged on the inner wall of the fixed shell (3), a semiconductor refrigeration sheet (504) is fixedly embedded on the inner wall of the circulating cooling box (503), a first cooling water pipe (505) is fixedly embedded on the surface of the circulating cooling box (503), a circulating water pump (506) is fixedly connected to the surface of the circulating cooling box (503), the input end of the circulating water pump (506) extends into the inside of the circulating cooling box (503), the output end of the circulating water pump (506) is fixedly connected with a second cooling water pipe (507), and the ends, away from the circulating cooling box (503), of the first cooling water pipe (505) and the second cooling water pipe (507) extend into the inside of the annular cooling cavity (502).
2. The plasma torch for in situ coal gasification according to claim 1, wherein The inner wall of the circulating cooling box (503) is fixedly connected with a flow guide partition plate (508), the upper surface of the flow guide partition plate (508) is provided with a plurality of baffles (509), the plurality of baffles (509) are distributed in an up-and-down staggered manner between the upper surface of the flow guide partition plate (508) and the inner top wall of the circulating cooling box (503), the output port of the first cooling water pipe (505) is located below the flow guide partition plate (508), and the input end of the circulating water pump (506) is located above the flow guide partition plate (508).
3. The plasma torch for in situ coal gasification according to claim 1, wherein A plurality of heat dissipation holes are formed in the surface of the fixed shell (3), and a heat dissipation fan (6) is fixedly mounted on the surface of the fixed shell (3), the position of the heat dissipation fan (6) corresponds to the position of the heat dissipation holes, and the position of the heat dissipation holes corresponds to the heat dissipation end of the semiconductor refrigeration sheet (504).
4. The plasma torch for in situ coal gasification according to claim 1, wherein The liquid inlet port of the first cooling water pipe (505) and the liquid outlet port of the second cooling water pipe (507) are distributed at the front and rear ends of the annular cooling cavity (502).
5. The plasma torch for in situ coal gasification according to claim 1, wherein The adjusting mechanism (2) comprises an annular fixed seat (201), a positioning support column (202) is rotatably arranged in the inside of the annular fixed seat (201), a gear ring (203) is fixedly connected to the surface of the positioning support column (202), a drive box (204) is fixedly arranged on the surface of the annular fixed seat (201), a first adjusting motor (205) is fixedly mounted in the inside of the drive box (204), a drive gear (206) is fixedly arranged on the rotating shaft of the first adjusting motor (205), and the drive gear (206) is engaged with the gear ring (203).
6. The plasma torch for in situ coal gasification of underground coal seams according to claim 5, characterized in that, The top of the positioning support column (202) is provided with an adjusting groove (207), the inner wall of the adjusting groove (207) is rotationally connected with a movable shaft, the surface of the movable shaft is fixedly provided with an adjusting block (208), the top end of the adjusting block (208) is fixedly connected with the lower surface of the fixed shell (3), the side surface of the annular fixed seat (201) is fixedly provided with a protective box (209), and the inner wall of the protective box (209) is fixedly provided with a second adjusting motor (210).
7. The plasma torch for in situ coal gasification of underground coal seams according to claim 6, characterized in that, The output shaft of the second adjusting motor (210) is fixedly connected with a worm (211), one end of the movable shaft extends to the inside of the protective box (209) and is fixedly connected with a worm wheel (212), and the worm (211) is meshed with the worm wheel (212).