CN203471122U - Explosion-proof electric welding device - Google Patents
Explosion-proof electric welding device Download PDFInfo
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- CN203471122U CN203471122U CN201320591233.4U CN201320591233U CN203471122U CN 203471122 U CN203471122 U CN 203471122U CN 201320591233 U CN201320591233 U CN 201320591233U CN 203471122 U CN203471122 U CN 203471122U
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- welding
- gas
- explosion
- flow sensor
- water
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Abstract
The utility model relates to an explosion-proof electric welding device, and belongs to the field of electric explosion protection. The explosion-proof electric welding device is suitable for electric welding at the flammable and combustible places such as mines and chemical engineering. According to the explosion-proof electric welding device, an electric welding machine capable of generating electric sparks easily, a contactor and other protection and control circuits are placed in a flameproof shell to form an explosion-proof welding power supply. In the welding process, electric arc light generated at the position nearby a welding gun nozzle is cooled by high-pressure nitrogen sprayed out from an inner spraying nozzle of a welding gun. In the welding process, hot molten iron sprayed at the position nearby a weldment is cooled through high-pressure water sprayed out through an outer spraying nozzle of the welding gun. The content of gas at the position nearby the welding gun is detected through a gas sensor, and connection and disconnection of a circuit of the explosion-proof welding power supply is controlled through a control cable; flow of the high-pressure nitrogen and flow of the high-pressure water are detected by a flow sensor, and connection and disconnection of the circuit of the explosion-proof welding power supply is controlled through the control cable.
Description
Technical field
The utility model relates to a kind of anti-explosion electric welding device, and this anti-explosion electric welding device is applicable to getting working face welding heavy mechanical equipment under coal mine.
Technical background
At present, the heavy mechanical equipment that getting working face is used under coal mine, if plant equipment is damaged, transport to ground maintenance very difficult, need long time and man-hour, heavy economic losses is produced and is brought in impact, generally takes at maintenance of underground, even in down-hole electric welding, in down-hole, naked light electric welding easily causes coal dust gas explosion accident, although generally by ore deposit chief engineer, ratified, and take some control measures, but there is no reliable technique guarantee, bring threat can to miner's life security.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of anti-explosion electric welding device is provided, to solve the deficiencies in the prior art.
For reaching above object, the utility model adopts following scheme: the electric welding machine, contactor and other protection and control circuit that easily produce electric spark are placed on to flameproof enclosure the inside and form the explosion-proof source of welding current; In welding process, near torch head, produce the high pressure nitrogen that arclight sprays by welding gun inner nozzle cooling, in welding process, be sprayed onto the water under high pressure that near red-hot molten iron weldment sprays by welding gun outer nozzle cooling; Near the firedamp sensor of methane gas content welding gun in wire-feed motor detects, and by control cables, controls explosion-proof source of welding current connecting and disconnecting of the circuit; The flow of elevated pressure nitrogen G&W is detected by flow sensor, by control cables, controls explosion-proof source of welding current connecting and disconnecting of the circuit; N
2gas cylinder, CO
2gas cylinder, pressure-reducing valve, gas flow sensor, gas proportioning device and water pump are placed on non-flameproof enclosure the inside and form air feed, water stop.
For achieving the above object, the utility model has the technical scheme of following three kinds:
Scheme one: adopt CO
2gas and N
2oxygen mixture is to welding gun air feed, through gas proportioning device proportioning, CO
2gas plays the protective effect with oxygen isolation, N
2gas plays the cooling effect of arc light.By the explosion-proof source of welding current 1, CO
2gas cylinder 2, pressure-reducing valve 3, N
2gas cylinder 4, the flexible pipe 5 of supplying gas, gas flow sensor 6, water pipe 7, water pump 8, water flow sensor 9, control cables 10, welding cable 11, wire-feed motor 12, firedamp sensor 13, workpiece 14, welding gun 15 and gas proportioning device 16 form.Through supplying gas, flexible pipe 5 and gas flow sensor 6 supply mist to welding gun 15, the water under high pressure of water pump 8 supplies water under high pressure through water pipe 7 and water flow sensor 9 to welding gun 15 simultaneously, the explosion-proof source of welding current 1 is exported electric energy by cable 11 to workpiece 14 and welding gun 15, by control cables 10, the control signal of gas flow sensor 6, water flow sensor 9, firedamp sensor 13 is transferred to the explosion-proof source of welding current 1, control its on/off state, when gas flow with discharge is too low or gas exceeding limit is controlled the explosion-proof source of welding current 1 power-off, welding process CO by control cables 10
2gas plays oxygen isolation, welding process N
2gas plays cooling cooling effect, also plays oxygen isolation, and water under high pressure plays the cooling effect to welding slag.
Scheme two: adopt CO
2and N
2two kinds of gases are independent to welding gun air feed, by the explosion-proof source of welding current 1, CO
2gas cylinder 2, pressure-reducing valve 3, N
2gas cylinder 4, the flexible pipe 5 of supplying gas, gas flow sensor 6, water pipe 7, water pump 8, water flow sensor 9, control cables 10, welding cable 11, wire-feed motor 12, firedamp sensor 13, workpiece 14 and welding gun 15 form.Through supplying gas, flexible pipe 5 and gas flow sensor 6 supply CO to welding gun 15
2and N
2gas, the water under high pressure of water pump 8 supplies water under high pressure through water pipe 7 and water flow sensor 9 to welding gun 15 simultaneously, the explosion-proof source of welding current 1 is exported electric energy by cable 11 to workpiece 14 and welding gun 15, by control cables 10, the control signal of gas flow sensor 6, water flow sensor 9, firedamp sensor 13 is transferred to the explosion-proof source of welding current 1, control its on/off state, when gas flow with discharge is too low or gas exceeding limit is controlled the explosion-proof source of welding current 1 power-off, welding process CO by control cables 10
2gas plays oxygen isolation, welding process N
2gas plays cooling cooling effect, also plays oxygen isolation, and water under high pressure plays the cooling effect to welding slag.
Scheme three: adopt N
2gas is to welding gun air feed, by the explosion-proof source of welding current 1, pressure-reducing valve 3, N
2gas cylinder 4, the flexible pipe 5 of supplying gas, gas flow sensor 6, water pipe 7, water pump 8, water flow sensor 9, control cables 10, welding cable 11, wire-feed motor 12, firedamp sensor 13, workpiece 14 and welding gun 15 form.Through supplying gas, flexible pipe 5 and gas flow sensor 6 supply N to welding gun 15
2gas, the water under high pressure of water pump 8 supplies water under high pressure through water pipe 7 and water flow sensor 9 to welding gun 15 simultaneously, the explosion-proof source of welding current 1 is exported electric energy by cable 11 to workpiece 14 and welding gun 15, by control cables 10, the control signal of gas flow sensor 6, water flow sensor 9, firedamp sensor 13 is transferred to the explosion-proof source of welding current 1, control its on/off state, when gas flow with discharge is too low or gas exceeding limit is controlled the explosion-proof source of welding current 1 power-off, welding process N by control cables 10
2gas plays cooling cooling effect, also plays oxygen isolation, and water under high pressure plays the cooling effect to welding slag.
Welding gun of the present utility model is by ignition tip 401, inner nozzle 402, outer nozzle 403, N
2gas passage 404, welding wire 405 and H
2o aquaporin-4 06 forms.Ignition tip 401 is connected with a wire of welding cable 11, the inside of inner nozzle 402 and N
2gas passage 404 communicates, the inside of outer nozzle 403 and H
2o aquaporin-4 06 communicates, and welding wire 405 is through N
2gas passage 404 and ignition tip 401.In welding process, near torch head, produce the high pressure nitrogen that arclight sprays by welding gun inner nozzle cooling, in welding process, be sprayed onto the water under high pressure that near red-hot molten iron weldment sprays by welding gun outer nozzle cooling.
Because the utility model has adopted such scheme, solved electric welding machine, contactor and other protection and control circuit flame proof problems, solved the Explosion-Proof that produces arclight in welding process, guaranteed technically the security of down-hole electric welding.
Accompanying drawing explanation
For the ease of understanding structural principle of the present utility model and implementing best mode of the present utility model, below in conjunction with accompanying drawing, the utility model is further illustrated.
Fig. 1 is the unit construction system figure of the utility model the first scheme;
Fig. 2 is the unit construction system figure of the utility model alternative plan;
Fig. 3 is the unit construction system figure of the utility model third party case;
Fig. 4 is anti-explosion blowtorch cut-away view of the present utility model;
In Fig. 1: 1. the explosion-proof source of welding current, 2.CO
2gas cylinder, 3. pressure-reducing valve, 4.N
2gas cylinder, the flexible pipe of 5. supplying gas, 6. gas flow sensor, 7. water pipe, 8. water pump, 9. water flow sensor, 10. control cables, 11. welding cables, 12. wire-feed motor, 13. firedamp sensors, 14. workpiece, 15. welding guns, 16. gas proportioning devices.
In Fig. 2: 1. the explosion-proof source of welding current, 2.CO
2gas cylinder, 3. pressure-reducing valve, 4.N
2gas cylinder, the flexible pipe of 5. supplying gas, 6. gas flow sensor, 7. water pipe, 8. water pump, 9. water flow sensor, 10. control cables, 11. welding cables, 12. wire-feed motor, 13. firedamp sensors, 14. workpiece, 15. welding guns.
In Fig. 3: 1. the explosion-proof source of welding current, 4.N
2gas cylinder, 3. pressure-reducing valve, the flexible pipe of 5. supplying gas, 6. gas flow sensor, 7. water pipe, 8. water pump, 9. water flow sensor, 10. control cables, 11. welding cables, 12. wire-feed motor, 13. firedamp sensors, 14. workpiece, 15. welding guns.
In Fig. 4: 401. ignition tips, 402. inner nozzles, 403. outer nozzles, 404.N
2gas passage, 405. welding wires, 406.H
2o aquaporin.
The specific embodiment
Implementation column 1: Fig. 1 is the unit construction system figure of the utility model the first scheme, adopts CO
2gas and N
2oxygen mixture is to welding gun air feed, through gas proportioning device 16 proportionings, through supplying gas, flexible pipe 5 and gas flow sensor 6 supply mist to welding gun 15, the water under high pressure of water pump 8 supplies water under high pressure through water pipe 7 and water flow sensor 9 to welding gun 15 simultaneously, the explosion-proof source of welding current 1 is exported electric energy by cable 11 to workpiece 14 and welding gun 15, by control cables 10 gas flow sensor 6, water flow sensor 9, the control signal of firedamp sensor 13 is transferred to the explosion-proof source of welding current 1, control its on/off state, when gas flow with discharge is too low or gas exceeding limit is controlled the explosion-proof source of welding current 1 power-off by control cables 10.Welding process CO
2gas plays oxygen isolation, welding process N
2gas plays cooling cooling effect, also plays oxygen isolation, and water under high pressure plays the cooling effect to welding slag.
Implementation column 2: Fig. 2 is the unit construction system figure of the utility model alternative plan, adopts CO
2and N
2two kinds of gases are independent of welding gun air feed, through supplying gas, flexible pipe 5 and gas flow sensor 6 supply mist to welding gun 15, the water under high pressure of water pump 8 supplies water under high pressure through water pipe 7 and water flow sensor 9 to welding gun 15 simultaneously, the explosion-proof source of welding current 1 is exported electric energy by cable 11 to workpiece 14 and welding gun 15, by control cables 10 gas flow sensor 6, water flow sensor 9, the control signal of firedamp sensor 13 is transferred to the explosion-proof source of welding current 1, control its on/off state, when gas flow with discharge is too low or gas exceeding limit is controlled the explosion-proof source of welding current 1 power-off by control cables 10, welding process CO
2gas plays oxygen isolation, welding process N
2gas plays cooling cooling effect, also plays oxygen isolation, and water under high pressure plays the cooling effect to welding slag.
Implementation column 3: Fig. 3 is the unit construction system figure of the utility model third party case, adopts N
2gas is to welding gun air feed, by the explosion-proof source of welding current 1, pressure-reducing valve 3, N
2gas cylinder 4, the flexible pipe 5 of supplying gas, gas flow sensor 6, water pipe 7, water pump 8, water flow sensor 9, control cables 10, welding cable 11, wire-feed motor 12, firedamp sensor 13, workpiece 14, welding gun 15 forms.Through supplying gas, flexible pipe 5 and gas flow sensor 6 supply N to welding gun 15
2gas, the water under high pressure of water pump 8 supplies water under high pressure through water pipe 7 and water flow sensor 9 to welding gun 15 simultaneously, the explosion-proof source of welding current 1 is exported electric energy by cable 11 to workpiece 14 and welding gun 15, by control cables 10, the control signal of gas flow sensor 6, water flow sensor 9, firedamp sensor 13 is transferred to the explosion-proof source of welding current 1, control its on/off state, when gas flow with discharge is too low or gas exceeding limit is controlled the explosion-proof source of welding current 1 power-off, welding process N by control cables 10
2gas plays cooling cooling effect, also plays oxygen isolation, and water under high pressure plays the cooling effect to welding slag.
Implementation column 4: Fig. 4 is anti-explosion blowtorch cut-away view of the present utility model, and welding gun of the present utility model is by ignition tip 401, inner nozzle 402, outer nozzle 403, N
2gas passage 404, welding wire 405, H
2o aquaporin-4 06 forms.Ignition tip 401 is connected with a wire of welding cable 11, the inside of inner nozzle 402 and N
2gas passage 404 communicates, the inside of outer nozzle 403 and H
2o aquaporin-4 06 communicates, and welding wire 405 is through N
2gas passage 404 and ignition tip 401.In welding process, near torch head, produce the high pressure nitrogen that arclight sprays by welding gun inner nozzle cooling, in welding process, be sprayed onto the water under high pressure that near red-hot molten iron weldment sprays by welding gun outer nozzle cooling.
Claims (4)
1. an anti-explosion electric welding device, is characterized in that: adopt CO
2gas and N
2oxygen mixture is to welding gun air feed, by the explosion-proof source of welding current (1), CO
2gas cylinder (2), pressure-reducing valve (3), N
2gas cylinder (4), the flexible pipe (5) of supplying gas, gas flow sensor (6), water pipe (7), water pump (8), water flow sensor (9), control cables (10), welding cable (11), wire-feed motor (12), firedamp sensor (13), workpiece (14), welding gun (15) and gas proportioning device (16) form, through supplying gas, flexible pipe (5) and gas flow sensor (6) supply mist to welding gun (15), through gas proportioning device (16) proportioning, the water under high pressure of water pump (8) supplies water under high pressure through water pipe (7) and water flow sensor (9) to welding gun (15) simultaneously, the explosion-proof source of welding current (1) is exported electric energy by cable (11) to workpiece (14) and welding gun (15), by control cables (10) gas flow sensor (6), water flow sensor (9), the control signal of firedamp sensor (13) is transferred to the explosion-proof source of welding current (1), control its on/off state.
2. an anti-explosion electric welding device, is characterized in that: adopt CO
2gas and N
2two kinds of gases of gas are independent to welding gun air feed, by the explosion-proof source of welding current (1), CO
2gas cylinder (2), pressure-reducing valve (3), N
2gas cylinder (4), the flexible pipe of supplying gas (5), gas flow sensor (6), water pipe (7), water pump (8), water flow sensor (9), control cables (10), welding cable (11), wire-feed motor (12), firedamp sensor (13), workpiece (14) and welding gun (15) form, and through supplying gas, flexible pipe (5) and gas flow sensor (6) supply CO to welding gun (15)
2and N
2gas, the water under high pressure of water pump (8) supplies water under high pressure through water pipe (7) and water flow sensor (9) to welding gun (15) simultaneously, the explosion-proof source of welding current (1) is exported electric energy by cable (11) to workpiece (14) and welding gun (15), by control cables (10), the control signal of gas flow sensor (6), water flow sensor (9), firedamp sensor (13) is transferred to the explosion-proof source of welding current (1), controls its on/off state.
3. an anti-explosion electric welding device, is characterized in that: adopt N
2gas is to welding gun air feed, by the explosion-proof source of welding current (1), pressure-reducing valve (3), N
2gas cylinder (4), the flexible pipe of supplying gas (5), gas flow sensor (6), water pipe (7), water pump (8), water flow sensor (9), control cables (10), welding cable (11), wire-feed motor (12), firedamp sensor (13), workpiece (14) and welding gun (15) form, and through supplying gas, flexible pipe (5) and gas flow sensor (6) supply N to welding gun (15)
2gas, the water under high pressure of water pump (8) supplies water under high pressure through water pipe (7) and water flow sensor (9) to welding gun (15) simultaneously, the explosion-proof source of welding current (1) is exported electric energy by cable (11) to workpiece (14) and welding gun (15), by control cables (10), the control signal of gas flow sensor (6), water flow sensor (9), firedamp sensor (13) is transferred to the explosion-proof source of welding current (1), controls its on/off state.
4. by the described a kind of anti-explosion electric welding device of one of claims 1 to 3, it is characterized in that: described welding gun is by ignition tip (401), inner nozzle (402), outer nozzle (403), N
2gas passage (404), welding wire (405) and H
2o aquaporin (406) forms, and ignition tip (401) is connected with a wire of welding cable (11), inside and the N of inner nozzle (402)
2gas passage (404) communicates, inside and the H of outer nozzle (403)
2o aquaporin (406) communicates, and welding wire (405) is through N
2gas passage (404) and ignition tip (401).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591233.4U CN203471122U (en) | 2013-09-15 | 2013-09-15 | Explosion-proof electric welding device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320591233.4U CN203471122U (en) | 2013-09-15 | 2013-09-15 | Explosion-proof electric welding device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203471122U true CN203471122U (en) | 2014-03-12 |
Family
ID=50219532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320591233.4U Expired - Fee Related CN203471122U (en) | 2013-09-15 | 2013-09-15 | Explosion-proof electric welding device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203471122U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607777A (en) * | 2015-01-21 | 2015-05-13 | 中国船舶重工集团公司第七二五研究所 | Welding shielding gas alternating gas supply system |
| CN115673617A (en) * | 2022-10-27 | 2023-02-03 | 江苏徐矿能源股份有限公司张集分公司 | Welding device for maintaining underground coal mining equipment |
-
2013
- 2013-09-15 CN CN201320591233.4U patent/CN203471122U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104607777A (en) * | 2015-01-21 | 2015-05-13 | 中国船舶重工集团公司第七二五研究所 | Welding shielding gas alternating gas supply system |
| CN115673617A (en) * | 2022-10-27 | 2023-02-03 | 江苏徐矿能源股份有限公司张集分公司 | Welding device for maintaining underground coal mining equipment |
| CN115673617B (en) * | 2022-10-27 | 2023-11-17 | 江苏徐矿能源股份有限公司张集分公司 | Welding device for maintaining underground coal mining equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20170915 |