KR101563285B1 - Gas torch for heating - Google Patents

Gas torch for heating Download PDF

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Publication number
KR101563285B1
KR101563285B1 KR1020140150466A KR20140150466A KR101563285B1 KR 101563285 B1 KR101563285 B1 KR 101563285B1 KR 1020140150466 A KR1020140150466 A KR 1020140150466A KR 20140150466 A KR20140150466 A KR 20140150466A KR 101563285 B1 KR101563285 B1 KR 101563285B1
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KR
South Korea
Prior art keywords
passage
oxygen
fuel gas
cooling water
nozzle body
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Application number
KR1020140150466A
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Korean (ko)
Inventor
이규명
Original Assignee
주식회사 대성정밀
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Priority to KR1020140150466A priority Critical patent/KR101563285B1/en
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Publication of KR101563285B1 publication Critical patent/KR101563285B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K5/00—Gas flame welding
    • B23K5/22—Auxiliary equipment, e.g. backings, guides
    • B23K5/24—Arrangements for supporting torches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
    • B23K37/003—Cooling means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/32—Accessories
    • B23K9/325—Devices for supplying or evacuating shielding gas

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Gas Burners (AREA)

Abstract

The present invention provides a gas torch for heating. The present invention prevents a backfire since fuel gas and air are mixed in an injection nozzle and sufficiently mixes the fuel gas with the air to obtain fire power having significantly excellent efficiency. To achieve the purpose, the gas torch for heating comprises: a torch head having a first oxygen passage and a first fuel gas passage; and a nozzle body having a second oxygen passage, a second mixing gas passage, and a second fuel gas passage.

Description

GAS TORCH FOR HEATING [0002]

The present invention relates to a heating gas torch capable of preventing backflushing and obtaining a very good efficiency of thermal power.

Generally, the gas torch is subdivided into various types such as heating (including for preheating), welding, cutting, or refinement. Depending on the purpose of use, however, the gas torch is injected into the body of the torch simultaneously The principle that the mixed gas of the fuel gas and the oxygen is ejected and burned to the injection nozzle at the end of the gas torch is applied almost the same.

1 is a front schematic view of a prior art gas torch used for pre-heating and heating operations.

As shown in the figures, the heating gas torch 1 is provided with a mixer 2a of oxygen and fuel gas at the tip end of the torch body 2 and an oxygen hose nipple 3 and the fuel gas hose nipple 4 are connected by a connector 7 and the torch pipe 8 extends forward from the mixer 2a and the torch head 9 at the tip of the torch pipe 8 An oxygen control knob 5 and a fuel gas control knob 6 are installed in the oxygen hose nipple 3 and the fuel gas hose nipple 4 .

In the heating gas torch, the fuel gas (LPG or LNG) and oxygen are once mixed in the mixer 2a to form a mixed gas, and then the mixed gas is injected through the torch pipe 8 and the torch head 9 And is ejected and burned through the nozzle (10).

In the conventional heating gas torch having such a structure, the fuel gas is mixed with high-pressure oxygen. However, due to the oxygen pressure, the fuel gas can not sufficiently be mixed with oxygen. When backflushing occurs, There is a problem that the efficiency of the thermal power deteriorates due to insufficient mixing of the fuel gas and oxygen.

Korean Patent Laid-Open No. 10-2014-0082574 "Discharge tip for gas torch provided with liquefaction prevention means" (disclosed on April 7, 2014) Korea Patent No. 10-0573437 "Gas Torch for Heating" (April 4, 2006)

SUMMARY OF THE INVENTION The present invention has been made to solve the problems of the prior art as described above, and it is an object of the present invention to provide a fuel cell system in which fuel gas and oxygen are mixed in an injection nozzle to prevent back- In the case of a heating gas torch.

According to an aspect of the present invention, there is provided an injection apparatus including a spray nozzle receiving portion formed on a front surface thereof, a first oxygen passage having a first end communicating with the injection nozzle receiving portion and a first oxygen inlet formed at the other end thereof, A torch head having a first fuel gas passage communicating with the injection nozzle receiving portion and having a first fuel gas inlet formed at the other end thereof; A plurality of second oxygen inflow ports for introducing oxygen are formed on a rear surface of the nozzle body, and a plurality of second oxygen inflow ports are formed in the outer peripheral surface of the rear end of the nozzle body, A plurality of second fuel gas inlets for introducing a gas are formed along a main surface of the nozzle body, and a plurality of second mixed gas injection holes for spraying a mixture gas of fuel gas and oxygen are formed on the front surface of the nozzle body And a second oxygen passage extending in a straight line from the second oxygen inlet toward the front of the nozzle body is formed and extends linearly from the second mixed gas nozzle toward the rear of the nozzle body, A second mixed gas passage communicating with the oxygen passage is formed, and the second mixed gas passage is formed in the axial direction of the nozzle body from the second fuel gas inlet Extend be four spray nozzles and the second and the second fuel gas passage in communication with the rear end of the mixed gas passage formed; Wherein the injection nozzle accommodating portion includes a first oxygen supply chamber communicated with the first oxygen passage and a second oxygen supply chamber communicated with the first fuel gas passage by the combination of the injection nozzle accommodating portion of the torch head and the injection nozzle, 1 fuel gas supply chamber, the second oxygen inlet communicates with the first oxygen supply chamber, the second fuel gas inlet is configured to communicate with the first fuel gas supply chamber, A second-1 oxygen passage having a short distance from the center of the nozzle body, and a second -2 oxygen passage having a long distance from the center of the nozzle body, and the second mixed- A second-1 mixed gas passage communicating with the oxygen passage, and a second 2-2 mixed gas passage communicating with the second -2 oxygen passage, and the second fuel gas passage is divided into the second- year Which it is characterized in that the gas separated by the second-first fuel passage and the second-second mixture gas passage and the second-second fuel gas passage in communication.

The injection nozzle receiving portion may include a first oxygen supply chamber forming portion forming a first oxygen supply chamber and a second compartment forming portion formed in front of the first oxygen supply chamber forming portion and forming a truncated cone- A first fuel gas supply chamber forming part located in front of the first compartment and forming the first fuel gas supply compartment; a first fuel gas supply compartment formed in front of the first fuel gas supply compartment and having a truncated cone- And a second compartment forming the second compartment; The nozzle body includes a first inclined surface forming portion formed on a rear edge of the nozzle body and having a first inclined surface for surface contact with the first compartment portion along a main surface of the nozzle body, A second inclined surface forming portion formed along a main surface of the nozzle body to be in surface contact with the second compartment portion and a second inclined surface forming portion extending forward from the front end of the first inclined surface forming portion along the axial direction of the nozzle body And a second horizontal surface forming part extending inward along the radial direction of the nozzle body from the rear end of the second inclined surface forming part to meet the first vertical surface forming part; The diameter of the first inclined surface forming portion is smaller than the diameter of the second inclined surface forming portion; Wherein the second fuel gas inlet is formed at a portion where the first vertical surface forming portion and the second horizontal surface forming portion meet each other; .

In this case, a coupling member coupling groove is formed at the rear center of the nozzle body, a coupling member through hole is formed in the rear of the first oxygen supply chamber forming portion, and one end of the coupling member penetrates through the coupling member through- And a fixing nut is screwed to the other end of the coupling member so that the injection nozzle can be coupled to the injection nozzle receiving portion.

delete

The first cooling water passage is formed at one end of the first cooling water passage and the first cooling water passage is formed at the other end of the first cooling water passage. 1 cooling water outlet is formed; The auxiliary head is connected to the torch head via a cooling water extension tube. A third oxygen passage of the auxiliary head is connected to the first oxygen inlet through an oxygen flow tube located inside the cooling water receiving tube. The third fuel gas passage is connected to the first fuel gas inlet through a fuel gas flow tube located inside the cooling water receiving tube, and the third cooling water inlet passage of the auxiliary head is connected to the cooling water inlet tube located inside the cooling water receiving tube And the third cooling water outflow passage of the auxiliary head may be connected to the first cooling water outflow through the cooling water reception pipe.

As described above, the present invention provides a heating gas torch which is capable of mixing a fuel gas and oxygen in an injection nozzle to prevent backfire phenomenon, and to sufficiently mix fuel gas and oxygen to obtain a very high efficiency thermal power do.

1 is a front schematic view of a prior art gas torch,
2 is a conceptual cross-sectional view of a heating gas torch according to an embodiment of the present invention,
Figure 3 is a cross-sectional view taken along the line AA of Figure 2;
4 is a sectional view taken along line BB of Fig. 2,
FIG. 5 is a sectional view showing only the combined state of the torch head and the injection nozzle in FIG. 2,
Figure 6 is a CC sectional view of Figure 5,
Figure 7 is a cross-sectional view of the torch head of Figure 5,
FIG. 8 is a conceptual cross-sectional view of the injection nozzle of FIG. 5,
Fig. 9 is a partially cutaway perspective view of the injection nozzle of Fig. 8,
FIG. 10 is a rear view of the injection nozzle of FIG. 8,
11 is a front view of the injection nozzle of Fig. 8; Fig.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

FIG. 2 is a conceptual cross-sectional view of a heating gas torch according to an embodiment of the present invention, FIG. 3 is a cross-sectional view taken along line AA of FIG. 2, 5 is a cross-sectional view of the torch head of FIG. 5, FIG. 8 is a conceptual cross-sectional view of the injection nozzle of FIG. 5, and FIG. 9 is a cross- FIG. 10 is a rear view of the injection nozzle of FIG. 8, and FIG. 11 is a front view of the injection nozzle of FIG. 8. Referring to FIG.

The heating gas torch of the present embodiment includes a torch head 100 and a spray nozzle 200 coupled to the torch head 100. In addition, And an auxiliary head 300 connected to the torch head 100.

First, the structure of the torch head 100 will be described.

The torch head 100 is provided with a spray nozzle receiving portion 111 on its front side and a first oxygen passage 112, a first fuel gas passage 113 and a first cooling water passage 114 are formed.

The injection nozzle receiving portion 111 is recessed rearward from the front surface of the torch head 100 and includes a second partition 111d, a first fuel gas supply chamber forming portion 111c, A partition portion 111b, and a first oxygen supply chamber forming portion 111a are formed.

The first oxygen supply chamber forming portion 111a forms a first oxygen supply chamber 111a-1 which is a cylindrical empty space and the first partition portion 111b is located in front of the first oxygen supply chamber forming portion 111a The first fuel gas supply chamber forming portion 111c is positioned in front of the first partition portion 111b and forms a first fuel gas supply chamber, and the second fuel gas supply chamber forming portion 111c is located in front of the first partition portion 111b, The partitioning portion 111d is located in front of the first fuel gas supply chamber forming portion 111c and forms a truncated cone-shaped void space in the form of an all-optical tube.

On the other hand, a coupling member through hole 115 is formed in the rear of the first oxygen supply chamber forming portion 111a. Therefore, the injection nozzle receiving portion 111 is not only opened at the front but also communicates with the outside through the coupling member through-hole 115 rearward.

The first oxygen passage 112 formed in the torch head 100 has one end communicating with the injection nozzle accommodating portion 111, particularly the first oxygen supply chamber 111a-1, An oxygen inlet 112a is formed.

The first fuel gas passage 113 formed in the torch head 100 has one end communicating with the injection nozzle accommodating portion 111, particularly the first fuel gas supply chamber 111c-1, A first fuel gas inlet 113a is formed.

A first cooling water passage 114 is formed in the torch head 100 for cooling the torch head 100 and a first cooling water inlet 114a is formed at one end of the first cooling water passage 114 And a first cooling water outlet 114b is formed at the other end of the first cooling water passage 114. [

Therefore, oxygen is supplied to the first oxygen inlet 112a and supplied to the first oxygen supply chamber 111a-1 via the first oxygen passage 112, and the fuel gas is supplied to the first fuel gas inlet 113a And is supplied to the first fuel gas supply chamber 111c-1 via the first fuel gas passage 113. [

On the other hand, the cooling water flows into the first cooling water inlet 114a for cooling the torch head 100, flows along the first cooling water passage 114, and then flows out to the first cooling water outlet 114b.

The injection nozzle 200 is detachably coupled to the torch head 100 as described above.

Hereinafter, the structure of the injection nozzle 200 will be described.

The injection nozzle 200 includes a nozzle body 210 detachably coupled to the injection nozzle receiving portion 111 of the torch head 100.

A second oxygen passage 220, a second fuel gas passage 230, and a second mixed gas passage 240 are formed in the nozzle body 210.

The second oxygen gas passage 220 and the second mixed gas passage 240 are disposed in a line and the second fuel gas passage 230 is disposed obliquely with respect to the second mixed gas passage 240.

And a plurality of second oxygen inflow ports 221 for introducing oxygen into the rear surface of the nozzle body 210 are formed. Particularly, the second oxygen inlet 221 has a second-1 oxygen inlet 221a having a short distance from the center of the nozzle body 210 and a second-2 oxygen inlet 221a having a long distance from the center of the nozzle body 210 221b.

The second oxygen passage 220 extends linearly from the respective second oxygen inlet 221 toward the front of the nozzle body 210. The second oxygen passage 220 also has a second-1 oxygen passage 220a having a short distance from the center of the nozzle body 210 and a second 2-2 oxygen passage 220b having a long distance from the center of the nozzle body 210 ).

In addition, the second oxygen passage 220 is linearly extended forward and then connected to the second mixed gas passage 240.

The second mixed gas passage 240 extends in a line with the second oxygen passage 220 and extends forward to the front surface of the nozzle body 210 while one end communicates with the second oxygen passage 220. Accordingly, a plurality of second mixed gas outlets 241 are formed on the front surface of the nozzle body 210.

The second mixed gas passage 240 and the second mixed gas outlet 241 are also connected to the second-1 mixed gas passage 240a and the second-1 mixed gas outlet 241a A second gas mixture gas passage 240b having a long distance from the center of the nozzle body 210 and a second gas mixture gas outlet 241b.

A plurality of second fuel gas inlets 231 for introducing the fuel gas are formed on the outer peripheral surface of the rear end of the nozzle body 210 along the main surface of the nozzle body 210.

A second fuel gas passage 230 is formed at an angle to the axial direction of the nozzle body 210 from the second fuel gas inlet 231 and the second fuel gas passage 230 is formed to be inclined with respect to the axial direction of the nozzle body 210, And communicates with the rear end portion.

The second fuel gas passage 230 is communicated with the second-1 gas mixture passage 240a or the second 2-gas mixture passage 240b, 2 fuel gas passage 230 and the second fuel gas inlet 231 are classified into the second-first fuel gas passage 230a and the second-first fuel gas inlet 231a or the second-2 fuel gas passage 230b And a 2-2 fuel gas inlet 231b.

Due to such an arrangement structure, the second-first fuel gas passage 230a is longer than the second-second fuel gas passage 230b.

After the oxygen is introduced into the second oxygen inlet 221 and the fuel gas is introduced into the second fuel gas inlet 231 as described above, oxygen and the fuel gas are mixed at the rear end of the second mixed gas passage 240 The mixed gas is injected into the second mixed gas outlet 241.

The second mixed gas passage 240 has the largest flow passage sectional area among the second oxygen passage 220, the second fuel gas passage 230 and the second mixed gas passage 240 and the second mixed gas passage 240 has the largest cross- Is the smallest.

Since it is difficult to form the second oxygen passage 220 with a small diameter directly on the nozzle body 210, the first processed oxygen passage 220 'having a relatively large diameter is first formed on the nozzle body 210 And a tip 220c for forming an oxygen cylinder in which a second oxygen passage 220 having a small diameter is formed in advance in the first processed oxygen passage 220 'is mounted.

Next, the structure of the outer peripheral surface of the rear end portion of the nozzle body 210 will be described.

The nozzle body 210 has a first inclined surface for surface contact with the first compartment 111b of the torch head 100 at a rear edge thereof is formed with a first inclined surface forming portion 211 Is formed. Of course, the first partition 111b of the torch head 100 also has to be formed with an inclined surface for surface contact with the first inclined surface.

A second inclined surface for contacting the second compartment 111d of the torch head 100 is provided at a rear end portion of the nozzle body 210 in the front of the first inclined surface forming portion 211, The second inclined surface forming portion 212 is formed along the main surface of the first inclined surface.

At this time, the diameter formed by the second inclined surface forming portion 212 is larger than the diameter of the first inclined surface forming portion 211.

A first vertical surface forming portion 211a and a second horizontal surface forming portion 212a are formed between the first inclined surface forming portion 211 and the second inclined surface forming portion 212. The first vertical surface forming portion 211a and the The two horizontal plane forming portions 212a are brought into mutual contact.

That is, the first vertical surface forming portion 211a is a surface extending forward from the front end of the first inclined surface forming portion 211 along the axial direction of the nozzle body 210, and the 12th horizontal surface forming portion 212a is a surface extending forward from the front end of the first inclined surface forming portion 211, The first vertical surface forming portion 211a and the second horizontal surface forming portion 212a extend inward along the radial direction of the nozzle body 210 from the rear end of the forming portion 212a and the first vertical surface forming portion 211a ).

That is, an L-shaped groove is formed between the first inclined surface forming portion 211 and the second inclined surface forming portion 212 by the first vertical surface forming portion 211a and the second horizontal surface forming portion 212a.

On the other hand, all of the second fuel gas inlet 231 is formed at a portion where the first vertical surface forming portion 211a and the second horizontal surface forming portion 212a meet with each other.

On the other hand, a coupling member coupling groove 213 is formed in the center of the rear surface of the nozzle body 210. In this embodiment, the coupling member coupling groove 213 is formed in the form of a female thread.

One end of the engaging member 250 is screwed to the engaging member engaging groove 213 first.

Both ends of the engaging member 250 are formed with male threads.

After the engaging member 250 is coupled to the nozzle body 210 and then the engaging member 250 passes through the engaging member through hole 115 of the torch head 100, the rear end of the nozzle body 210 And is inserted into the injection nozzle receiving portion 111 of the torch head 100.

A fixing nut 260 is screwed to the other end of the coupling member 250 so that the injection nozzle 200 is coupled to the torch head 100.

The combination of the injection nozzle 200 and the torch head 100 has a structure in which the rear end of the injection nozzle 200 can be detachably coupled to the injection nozzle receiving portion 111 of the torch head 100 .

The injection nozzle receiving portion 111 is divided into the first oxygen supply chamber 111a-1 and the first fuel gas supply chamber 111c-1 in a state where the injection nozzle 200 and the torch head 100 are coupled to each other.

The first inclined surface forming portion 211 of the injection nozzle 200 is in surface contact with the first compartment 111b of the injection nozzle accommodating portion 111 so that the first oxygen supplying chamber 111a- The first inclined surface forming portion 211 of the injection nozzle 200 is in surface contact with the first partition portion 111b of the injection nozzle receiving portion 111 while the second inclined surface forming portion 212 of the injection nozzle 200 is in contact with the first inclined surface forming portion 211, The first fuel gas supply chamber 111c-1 becomes a closed space while being in surface contact with the second compartment 111d.

2, the gas torch according to the present embodiment further includes a cooling-reception extension pipe 400 and an auxiliary head 300.

 A third oxygen passage 301, a third fuel gas passage 302, a third cooling water inflow passage 303 and a third cooling water outflow passage 304 are formed in the auxiliary head 300.

An adapter or the like is provided to each of the third oxygen passage 301, the third fuel gas passage 302, the third cooling water inflow passage 303 and the third cooling water outflow passage 304 of the auxiliary head 300, , A fuel gas supply pipe, a cooling water inflow pipe, and a cooling water discharge pipe may be connected.

On the other hand, a cooling water extension pipe 400 is provided between the auxiliary head 300 and the torch head 100.

An oxygen flow pipe 401, a fuel gas flow pipe 402, and a cooling water inflow pipe 403 are provided inside the cooling water reception pipe 400.

The oxygen flow pipe 401 connects the third oxygen passage 301 of the auxiliary head 300 and the first oxygen inlet 112a of the torch head 100 and the fuel gas flow pipe 402 connects the auxiliary head 300, The cooling water inlet pipe 403 connects the third fuel gas passage 302 of the auxiliary head 300 to the first fuel gas inlet 113a of the torch head 100. The cooling water inlet pipe 403 is connected to the third cooling water inlet passage 303 of the auxiliary head 300, And the first cooling water inlet 114a of the torch head 100 are connected to each other.

On the other hand, a region located outside the oxygen flow tube 401, the fuel gas flow tube 402, and the cooling water inflow tube 403 in the cooling water reception tube 400 is connected to the first cooling water outlet 114b of the torch head 100 And the third cooling water outflow passage 304 of the auxiliary head 300 is connected.

 When the cooling water receiving tube 400 is connected to the torch head 100, the first oxygen inlet 112a, the first fuel gas inlet 113a, the first cooling water inlet 114a, the first cooling water outlet 114b ) Are all located inside the cooling-receiving extension pipe 400. [0054]

Such a structure can protect the torch head 100, the oxygen flow tube 401, the fuel gas flow tube 402, and the coolant inflow tube 403 from high temperatures when the work environment and / or the object to be heated are extremely high.

Next, the operation of the present embodiment will be described.

Oxygen is injected through the third oxygen passage 301 of the auxiliary head 300 and oxygen flows through the oxygen flow tube 401 inside the cooling water receiving tube 400 and the first oxygen passage 112 of the torch head 100 1 into the first oxygen supply chamber 111a-1 of the injection nozzle accommodating portion 111 and then to the second oxygen passage 220 of the injection nozzle 200. [

The fuel gas is injected through the third fuel gas passage 302 of the auxiliary head 300 and the fuel gas flows through the fuel gas flow tube 402 inside the cooling water tube 400, Is introduced into the first fuel gas supply chamber 111c-1 of the injection nozzle accommodating portion 111 through the gas passage 113 and then supplied to the second fuel gas passage 230 of the injection nozzle 200. [

When oxygen and fuel gas are introduced into the injection nozzle 200, the oxygen in the second oxygen passage 220 and the fuel gas in the second fuel gas passage 230 are mixed with each other in the second mixed gas passage 240, 2 mixed gas outflow port 241.

Since the oxygen and the fuel gas are mixed in the injection nozzle 200, the backflow phenomenon is suppressed, and the oxygen and the fuel gas are uniformly mixed in the entire area of the injection nozzle 200 to increase the efficiency of the thermal power .

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: torch head 111: injection nozzle receiving portion
111a: first oxygen supply chamber forming part 111a-1: first oxygen supply chamber
111b: a first compartment
111c: a first fuel gas supply chamber forming part 111c-1: a first fuel gas supply chamber forming part
111d: second compartment
112: first oxygen passage 112a: first oxygen inlet
113: first fuel gas passage 113a: first fuel gas inlet
114: first cooling water passage 114a: first cooling water inlet
114b: first cooling water outlet
115: Coupling member through-
200: injection nozzle 210: nozzle body
211: first inclined plane forming portion 211a: first vertical plane forming portion
212: second inclined plane forming portion 212a: second horizontal plane horizontal portion
213: engaging member engaging groove
220: second oxygen passage 220c: oxygen passage forming tip
221: second oxygen inlet
230: Second fuel gas passage 231: Second fuel gas inlet
240: second mixed gas passage 241: second mixed gas outlet
250: coupling member 260: fixing nut
300: auxiliary head 301: third oxygen passage
302: third fuel gas passage 303: third cooling water inflow passage
304: Third cooling water outflow passage
400: cooling water extension pipe 401: oxygen flow pipe
402: Fuel gas flow tube 403: Cooling water inlet tube

Claims (5)

A first oxygen passage is formed in a front surface thereof, one end of which communicates with the injection nozzle receiving portion, and the other end of which has a first oxygen inlet port, one end communicates with the injection nozzle accommodating portion, A torch head in which a first fuel gas passage is formed in which a first fuel gas inlet is formed;
A plurality of second oxygen inflow ports for introducing oxygen are formed on a rear surface of the nozzle body, and a plurality of second oxygen inflow ports are formed in the outer peripheral surface of the rear end of the nozzle body, A plurality of second fuel gas inlets for introducing a gas are formed along a main surface of the nozzle body, and a plurality of second mixed gas injection holes for spraying a mixture gas of fuel gas and oxygen are formed on the front surface of the nozzle body And a second oxygen passage extending in a straight line from the second oxygen inlet toward the front of the nozzle body is formed and extends linearly from the second mixed gas nozzle toward the rear of the nozzle body, A second mixed gas passage communicating with the oxygen passage is formed, and the second mixed gas passage is formed in the axial direction of the nozzle body from the second fuel gas inlet Extend be four spray nozzles and the second and the second fuel gas passage in communication with the rear end of the mixed gas passage formed;
, ≪ / RTI >
The injection nozzle accommodating portion is divided into a first oxygen supply chamber communicating with the first oxygen passage and a first fuel gas supply chamber communicating with the first fuel gas passage by the combination of the injection nozzle accommodating portion of the torch head and the injection nozzle Wherein the second oxygen inlet is in communication with the first oxygen supply chamber and the second fuel gas inlet is in communication with the first fuel gas supply chamber;
The second oxygen passage is divided into a 2-1 oxygen passage having a shorter distance from the center of the nozzle body and a 2-2 oxygen passage having a longer distance from the center of the nozzle body, Wherein the passage is divided into a 2-1 mixture gas passage communicating with the 2-1 oxygen passage and a 2-2 mixed gas passage communicating with the 2-2 oxygen passage, A second-1 fuel gas passage communicating with the 2-1 mixed gas passage and a second 2-2 fuel gas passage communicating with the 2-2 mixed gas passage;
Wherein the gas torch is a gas torch.
The method according to claim 1,
Wherein the injection nozzle receiving portion includes a first oxygen supply chamber forming portion forming a first oxygen supply chamber, a first compartment positioned in front of the first oxygen supply chamber forming portion and forming a truncated cone- A first fuel gas supply chamber forming unit positioned in front of the first compartment and forming the first fuel gas supply chamber, and a second fuel gas supply chamber forming unit disposed in front of the first fuel gas supply chamber forming unit and forming a truncated cone- 2 compartment;
The nozzle body includes a first inclined surface forming portion formed on a rear edge of the nozzle body and having a first inclined surface for surface contact with the first compartment portion along the main surface of the nozzle body, A second inclined surface forming portion formed along a main surface of the nozzle body to be in surface contact with the second compartment portion and a second inclined surface forming portion extending forward from the front end of the first inclined surface forming portion along the axial direction of the nozzle body And a second horizontal surface forming part extending inward along the radial direction of the nozzle body from the rear end of the second inclined surface forming part to meet the first vertical surface forming part;
The diameter of the first inclined surface forming portion is smaller than the diameter of the second inclined surface forming portion;
Wherein the second fuel gas inlet is formed at a portion where the first vertical surface forming portion and the second horizontal surface forming portion meet each other;
Wherein the gas torch is a gas torch.
3. The method according to claim 1 or 2,
Wherein a coupling member coupling groove is formed at a rear center of the nozzle body and a coupling member through hole is formed in a rear portion of the first oxygen supply chamber formation portion and one end of the coupling member penetrates through the coupling member coupling groove And a fixing nut is screwed to the other end of the coupling member so that the injection nozzle is coupled to the injection nozzle receiving portion.
delete 3. The method according to claim 1 or 2,
A first cooling water passage for flowing cooling water is formed inside the torch head, a first cooling water inlet is formed at one end of the first cooling water passage, a first cooling water outlet is provided at the other end of the first cooling water passage / RTI >
The auxiliary head is connected to the torch head via a cooling water extension tube. A third oxygen passage of the auxiliary head is connected to the first oxygen inlet through an oxygen flow tube located inside the cooling water receiving tube. The third fuel gas passage is connected to the first fuel gas inlet through a fuel gas flow tube located inside the cooling water receiving tube, and the third cooling water inlet passage of the auxiliary head is connected to the cooling water inlet tube located inside the cooling water receiving tube And the third cooling water outlet passage of the auxiliary head is connected to the first cooling water outlet through the cooling water receiver extension pipe; Wherein the gas torch is a gas torch.
KR1020140150466A 2014-10-31 2014-10-31 Gas torch for heating KR101563285B1 (en)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101230237B1 (en) * 2012-07-23 2013-02-06 조중래 Nozzle for torch cutting machine

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101230237B1 (en) * 2012-07-23 2013-02-06 조중래 Nozzle for torch cutting machine

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