CN114985696A - Cutting torch for cutting integrated ignition continuous casting plate blank and continuous casting cutting machine - Google Patents
Cutting torch for cutting integrated ignition continuous casting plate blank and continuous casting cutting machine Download PDFInfo
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- CN114985696A CN114985696A CN202210710241.XA CN202210710241A CN114985696A CN 114985696 A CN114985696 A CN 114985696A CN 202210710241 A CN202210710241 A CN 202210710241A CN 114985696 A CN114985696 A CN 114985696A
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- cutting
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- continuous casting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/12—Accessories for subsequent treating or working cast stock in situ
- B22D11/126—Accessories for subsequent treating or working cast stock in situ for cutting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery
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Abstract
The invention relates to the technical field of metal cutting, in particular to a cutting torch for cutting an integrated ignition continuous casting slab and a continuous casting cutting machine. The cutting torch comprises a shell, a cutting nozzle, a preheating oxygen pipeline, a fuel gas pipeline, a cutting oxygen pipeline, an ignition mechanism and a cooling mechanism, wherein the cooling mechanism is arranged at the joint of the shell and the cutting nozzle; a mixed gas channel and a cutting oxygen channel are arranged in the cutting nozzle; the preheating oxygen pipeline and the fuel gas pipeline which are arranged in the shell are respectively communicated with a mixed gas channel in the cutting torch, and the cutting oxygen pipeline which is arranged in the shell is communicated with a cutting oxygen channel in the cutting torch; the ignition mechanism arranged in the shell is communicated with the cutting oxygen pipeline, and mixed gas in the mixed gas channel is ignited through the ignition mechanism to form preheating flame. The continuous casting cutting machine comprises the cutting torch. The invention can form stable and concentrated preheating flame, ensure effective cutting thickness, effectively improve cutting quality, and has the advantages of less slag adhering and the like.
Description
Technical Field
The invention relates to the technical field of metal cutting, in particular to a cutting torch for cutting an integrated ignition continuous casting slab and a continuous casting cutting machine.
Background
The hot cutting technology and the welding technology of metals are called as metal 'tailor', and the metallurgy continuous casting cutting technology and equipment occupy a very important position in the metallurgy continuous casting technology and equipment system. The continuous casting cutting machine is positioned at the tail part of the continuous casting production line, and the continuous casting cutting machine has the task of cutting a theoretically infinite billet drawn by a continuous casting machine into a fixed length or a multiple length according to requirements. The basic characteristics of the metallurgy continuous casting cutting technology are high speed, high quality, high stability and long service life, and the production environment is high temperature and high dust.
The front of the outer cantilever of the transverse moving mechanism of the existing continuous casting cutting machine needs to be hung with an ignition gun and a special ignition gas channel and a cutting torch, so that the structure of the continuous casting cutting machine is complex, the whole load of the outer cantilever of the transverse moving mechanism is high, and the installation and the debugging of the continuous casting cutting machine are time-consuming and labor-consuming.
Disclosure of Invention
In view of the above disadvantages and shortcomings in the prior art, the invention provides an integrated ignition cutting torch for cutting a continuous casting slab and a continuous casting cutting machine, which solve the technical problems of complex structure and time and labor waste in installation and debugging of the existing continuous casting cutting machine.
In order to achieve the purpose, the invention adopts the main technical scheme that:
on one hand, the embodiment of the invention provides an integrated ignition cutting torch for cutting a continuous casting slab, which comprises a shell, a cutting nozzle, a preheating oxygen pipeline, a gas pipeline, a cutting oxygen pipeline, an ignition mechanism and a cooling mechanism, wherein the cooling mechanism is arranged at the joint of the shell and the cutting nozzle; a mixed gas channel and a cutting oxygen channel are arranged in the cutting nozzle; the preheating oxygen pipeline and the fuel gas pipeline which are arranged in the shell are respectively communicated with a mixed gas channel in the cutting nozzle, and the cutting oxygen pipeline which is arranged in the shell is communicated with a cutting oxygen channel in the cutting nozzle; the ignition mechanism arranged in the shell is communicated with the cutting oxygen pipeline, and mixed gas in the mixed gas channel is ignited through the ignition mechanism to form preheating flame.
Further, the ignition mechanism comprises an ignition needle assembly and an ignition gas pipeline assembly, one end of the ignition gas pipeline assembly is communicated with the cutting oxygen pipeline, the ignition needle assembly is connected with the cutting oxygen pipeline, and the ignition needle assembly is arranged on one side close to the cutting nozzle relative to the ignition gas pipeline assembly.
Further, the ignition needle assembly comprises an ignition needle, an ignition needle connector and an ignition cable, one end of the ignition needle is connected with the cutting oxygen pipeline through the ignition needle connector, and the other end of the ignition needle is connected with the ignition cable penetrating through the shell.
Further, ignition gas pipeline subassembly includes ignition gas pipeline, ignition oxygen pipeline, the unit is inhaled in the ignition penetrating and the mist pipeline of igniting, ignition gas pipeline with ignition oxygen pipeline divide equally do not with the unit connection is inhaled in the ignition penetrating, the ignition penetrate inhale the unit with the one end of ignition mist pipeline is connected, the other end of ignition mist pipeline with cutting oxygen pipeline intercommunication.
Further, the ignition injection and suction unit comprises an injection and suction chamber, a first nozzle and a second nozzle; the first nozzle and the second nozzle are both arranged in the jetting and sucking chamber; one end of the first nozzle is communicated with the ignition oxygen pipeline; the other end of the first nozzle is inserted into the second nozzle, and a gap is formed between the first nozzle and the second nozzle; the ignition gas pipeline is communicated with the gap; the first nozzle is communicated with the second nozzle, and the second nozzle is communicated with the ignition mixed gas pipeline.
Furthermore, a sealing ring is arranged between the first nozzle and the jetting and sucking chamber, and a sealing ring is arranged between the second nozzle and the jetting and sucking chamber.
Furthermore, the cooling mechanism comprises a cooling water inlet pipe, a cooling water outlet pipe and a cooling circulation chamber, wherein one end of the cooling water inlet pipe is communicated with the cooling circulation chamber, and the other end of the cooling water inlet pipe penetrates through the shell to be communicated with the water inlet pipe; one end of the cooling water outlet pipe is communicated with the cooling circulation chamber, and the other end of the cooling water outlet pipe penetrates through the shell and is communicated with the water outlet pipe.
In another aspect, an embodiment of the present invention provides a continuous casting cutting machine, including the above-mentioned integrated ignition cutting torch for cutting a continuous casting slab.
The invention has the beneficial effects that: the cutting torch for cutting the integrated ignition continuous casting slab provided by the invention can form stable and concentrated preheating flame, ensure effective cutting thickness, effectively improve cutting quality, reduce slag adhering and the like. The cutting torch of the invention is designed by adopting novel oxygen-YT-2 type industrial gas, and has better cutting effect. The cutting torch can improve the cutting quality, the cutting end face is smooth, and the consumption of energy media can be reduced. The continuous casting cutting machine integrates the automatic ignition function and the cutting torch, is convenient to install, and can ensure smooth and stable airflow.
Drawings
FIG. 1 is a schematic structural diagram of a cutting torch for cutting an integrated ignition continuous casting slab according to the present invention;
FIG. 2 is a left side view of an integrated ignition cutting torch for cutting a continuous casting slab in accordance with the present invention;
FIG. 3 is a right side view of an integrated ignition cutting torch for cutting a continuous casting slab according to the present invention;
FIG. 4 is a schematic cross-sectional view of FIG. 1 taken along the axial direction of the housing;
FIG. 5 is another schematic cross-sectional view taken along the axial direction of the housing in FIG. 1;
FIG. 6 is a third schematic sectional view taken along the axial direction of the housing in FIG. 1;
fig. 7 is an enlarged view of a portion a of fig. 6.
In the figure: 1. a housing; 2. cutting a nozzle; 21. cutting an oxygen channel; 22. a mixed gas channel; 23. a cutting tip seat; 3. preheating an oxygen pipeline; 4. a gas pipeline; 5. cutting an oxygen pipeline; 6. a cooling water inlet pipe; 7. a cooling water outlet pipe; 8. a cooling circulation chamber; 9. an ignition needle assembly; 91. an ignition needle; 92. an ignition pin connector; 93. an ignition cable; 10. an ignition gas duct assembly; 101. igniting the gas pipeline; 102. an ignition oxygen conduit; 103. an ignition injection unit; 1031. a shooting and sucking chamber; 1032. a first nozzle; 1033. a second nozzle; 1034. a gap; 1035. a seal ring; 104. and igniting the mixed gas pipeline.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Example 1:
referring to fig. 1 to 3, the present invention provides an integrated ignition cutting torch for cutting a continuous casting slab. The cutting torch comprises a shell 1, a cutting nozzle 2, a preheating oxygen pipeline 3, a gas pipeline 4, a cutting oxygen pipeline 5, an ignition mechanism and a cooling mechanism.
Wherein, one end of the shell 1 is connected with the cutting nozzle 2 through the cutting nozzle seat 23, and a cooling mechanism is arranged at the connection position. Specifically, referring to fig. 5, the cooling mechanism includes a cooling water inlet pipe 6, a cooling water outlet pipe 7, and an annular cooling circulation chamber 8 provided between the housing 1 and the cutting tip seat 23. One end of the cooling water inlet pipe 6 is communicated with the cooling circulation chamber 8, and the other end of the cooling water inlet pipe 6 penetrates through the shell 1 to be communicated with the water inlet pipe. One end of a cooling water outlet pipe 7 is communicated with the cooling circulation chamber 8, and the other end of the cooling water outlet pipe 7 penetrates through the shell 1 to be communicated with a water outlet pipe.
Referring to fig. 4, a cutting oxygen channel 21 and a plurality of mixed gas channels 22 are arranged in the cutting torch 2, and the number of the mixed gas channels 22 in the invention is 14-24, preferably 20, so that the heating effect is ensured, and the cutting speed and the cutting quality are improved. The included angle of 0-6 degrees is formed between the axis of the mixed gas channel 22 and the axis of the cutting oxygen channel 21, the structure generates a certain compression effect on the shape of the whole flame, the thermal power density of the flame is improved, the heating effect on the continuous casting plate blank is improved, and the structure has obvious effects on improving the cutting speed and the cutting quality. The cutting oxygen channel 21 in the invention adopts aerodynamic design, the integral line is streamline, the structural design is reasonable, the resistance is small, the flow velocity of the cutting oxygen reaches the supersonic speed of 2.0-2.3M, the cutting speed is effectively improved, and the kinetic energy of the cutting oxygen flow is improved, so that the penetrating power of the cutting billet and the slag discharge capacity are improved, and the cutting quality is improved.
Referring to fig. 4, the preheating oxygen pipe 3 and the gas pipe 4 disposed in the housing 1 are respectively communicated with the mixed gas passage 22 in the cutting torch 2. Specifically, the preheated oxygen in the preheated oxygen pipe 3 and the fuel gas in the fuel gas pipe 4 are merged in the mixed gas passage 22 in the cutting torch 2, and form a mixed gas, which is ejected through the cutting torch 2. The preheating oxygen pipeline 3 and the fuel gas pipeline 4 are designed in an isobaric structure, so that the combustion stability of preheating flame is ensured.
Wherein, referring to fig. 4, the cutting oxygen duct 5 provided in the housing 1 communicates with the cutting oxygen passage 21 in the cutting torch 2. That is, the cutting oxygen in the cutting oxygen line 5 passes through the cutting oxygen passage 21 in the cutting torch 2 and is discharged from the cutting torch 2, thereby cutting the continuously cast slab. The continuous cast slabs of different thicknesses were cut, with the throat diameters of the cutting oxygen channels 21 of the different cutting nozzles 2 being selected, as shown in the table below.
| Serial number | Slab thickness (mm) | Throat diameter Dc (mm) | Cutting torch specification |
| 1 | 160-250 | 3.6 | YTSF36 |
| 2 | 200-260 | 4.0 | YTSF40 |
| 3 | 250-300 | 4.3 | YTSF43 |
| 4 | 260-350 | 5.0 | YTSF50 |
When the continuous casting plate blanks with different thicknesses are cut, the cutting oxygen channel 21 in the cutting nozzle 2 adopts throat diameters with different sizes, and other sizes of the cutting oxygen channel 21 are correspondingly changed; the major dimensions are shown in the table below.
Referring to fig. 5 and 6, an ignition mechanism disposed in the housing 1 communicates with the cutting oxygen duct 5, and the mixed gas in the mixed gas passage 22 is ignited by the ignition mechanism to form a preheating flame. Specifically, the ignition mechanism includes an ignition needle 91 assembly 9 and an ignition gas conduit assembly 10. One end of the ignition gas pipe assembly 10 is communicated with the cutting oxygen pipe 5, the ignition needle 91 assembly 9 is connected with the cutting oxygen pipe 5, and the ignition needle 91 assembly 9 is arranged on one side close to the cutting nozzle 2 relative to the ignition gas pipe assembly 10. The gas in the ignition gas pipe assembly 10 is ignited by the ignition needle 91 assembly 9, and the ignited gas is ejected from the cutting oxygen passage 21 in the nozzle to ignite the mixed gas in the mixed gas passage 22.
Referring to fig. 5, the ignition needle 91 assembly 9 includes an ignition needle 91, an ignition needle 91 connector, and an ignition cable 93. One end of the ignition needle 91 is connected with the cutting oxygen pipeline 5 through the ignition needle 91 joint, so that the head of the ignition needle 91 can be ensured to contact the ignition gas in the cutting oxygen pipeline 5, and the ignition gas is ignited. The other end of the ignition needle 91 is connected with an ignition cable 93 penetrating through the shell 1, the ignition cable 93 can be connected with a control switch outside the shell 1, and the ignition needle 91 is controlled to be turned on or off through the switch.
Referring to fig. 6 and 7, among others, the ignition gas duct assembly 10 includes an ignition gas duct 1014, an ignition oxygen duct 102, an ignition injection unit 103, and an ignition mixture gas duct 104. The ignition gas pipeline 1014 and the ignition oxygen pipeline 102 are respectively connected with the inlet end of the ignition injection and suction unit 103, the outlet end of the ignition injection and suction unit 103 is connected with one end of an ignition mixed gas pipeline 104, and the other end of the ignition mixed gas pipeline 104 is communicated with the cutting oxygen pipeline 5. The ignition gas in the ignition gas duct 1014 and the ignition oxygen in the ignition oxygen duct 102 are mixed by the ignition injection unit 103, and then ejected from the ignition mixed gas duct 104 into the cutting oxygen duct 5.
Specifically, referring to fig. 7, the ignition shooting and sucking unit 103 includes a shooting and sucking chamber 1031, a first nozzle 1032 and a second nozzle 1033. The first nozzle 1032 and the second nozzle 1033 are both provided in the ejection and suction chamber 1031. The inlet end of first nozzle 1032 is in communication with ignition oxygen conduit 102 such that ignition oxygen within ignition oxygen conduit 102 enters first nozzle 1032. The outlet end of first nozzle 1032 is in communication with the inlet end of second nozzle 1033 such that ignition oxygen within first nozzle 1032 entrains ignition gas within ignition gas conduit 1014 into second nozzle 1033. A gap 1034 is formed between the first nozzle 1032 and the second nozzle 1033, and the gap 1034 is in communication with the ignition gas conduit 1014 such that the ignition gas in the ignition gas conduit 1014 is entrained by the ignition oxygen to enter the second nozzle 1033. The outlet end of the second nozzle 1033 is communicated with the ignition mixture gas conduit 104, so that the ignition fuel gas and the ignition oxygen gas are mixed and then enter the ignition mixture gas conduit 104. A seal ring 1035 is provided between the first nozzle 1032 and the ejection chamber 1031, and a seal ring 1035 is also provided between the second nozzle 1033 and the ejection chamber 1031, so that a sealing function can be achieved and gas leakage can be prevented.
The invention sets an ignition mechanism in the cutting torch to form a path of ignition gas, and the ignition gas is ignited in the cutting torch shell 1 to form a flame, and the flame is sprayed by the cutting nozzle 2 to ignite preheating flame. The specific process flow of the invention is as follows:
1. the ignition gas and the ignition oxygen are mixed in a certain proportion in the ignition injection unit 103 in the cutting torch and then are sprayed into the cutting oxygen pipeline 5; the ignition needle 91 is ignited by the assembly 9 to form an ignition charge; then the mixed gas is sprayed out from the cutting nozzle 2 to ignite the mixed gas in the mixed gas channel 22, and a preheating flame is formed. At this time, the cutting oxygen pipe 5 is not filled with cutting oxygen.
2. After the mixed gas in the mixed gas passage 22 is ignited, the ignition needle 91 assembly 9 is closed and the ignition gas pipe assembly 10 is cut off, and then the valve of the cutting oxygen pipe 5 is opened to eject the cutting oxygen from the cutting tip 2.
3. And opening valves of a cooling water inlet pipe 6 and a cooling water outlet pipe 7 of the cooling mechanism to enable cooling water to enter the cutting torch to cool the cutting nozzle 2.
Example 2:
the present embodiment provides a continuous casting cutting machine including the integrated ignition cutting torch for cutting a continuous casting slab according to embodiment 1. The specific structure of the integrated ignition continuous casting slab cutting torch is described in detail in embodiment 1, and is not described herein again.
The invention integrates the cutting torch and the automatic ignition function into a whole to form the integrated continuous casting slab internal ignition cutting torch, thereby simplifying the state of suspending the ignition gun and the cutting torch in front of the continuous casting cutting machine, reducing heated parts, simplifying the structural design of the transverse moving mechanism of the continuous casting cutting machine, reducing the overall load of the outer cantilever of the transverse moving mechanism and increasing the water cooling effect.
Claims (8)
1. The utility model provides an integrated form ignition cutting torch for continuous casting slab cutting which characterized in that: the cutting torch comprises a shell, a cutting torch, a preheating oxygen pipeline, a gas pipeline, a cutting oxygen pipeline, an ignition mechanism and a cooling mechanism, wherein the cooling mechanism is arranged at the joint of the shell and the cutting torch; a mixed gas channel and a cutting oxygen channel are arranged in the cutting nozzle; the preheating oxygen pipeline and the fuel gas pipeline which are arranged in the shell are respectively communicated with a mixed gas channel in the cutting nozzle, and the cutting oxygen pipeline which is arranged in the shell is communicated with a cutting oxygen channel in the cutting nozzle; the ignition mechanism arranged in the shell is communicated with the cutting oxygen pipeline, and mixed gas in the mixed gas channel is ignited through the ignition mechanism to form preheating flame.
2. The cutting torch for cutting an integrated ignition continuous casting slab as set forth in claim 1, wherein: the ignition mechanism comprises an ignition needle assembly and an ignition gas pipeline assembly, one end of the ignition gas pipeline assembly is communicated with the cutting oxygen pipeline, the ignition needle assembly is connected with the cutting oxygen pipeline, and the ignition needle assembly is arranged on one side close to the cutting nozzle relative to the ignition gas pipeline assembly.
3. The cutting torch for cutting an integrated ignition continuous casting slab as set forth in claim 2, wherein: the ignition needle assembly comprises an ignition needle, an ignition needle connector and an ignition cable, one end of the ignition needle is connected with the cutting oxygen pipeline through the ignition needle connector, and the other end of the ignition needle is connected with the ignition cable penetrating through the shell.
4. The cutting torch for cutting an integrated ignition continuous casting slab as set forth in claim 2, wherein: ignition gas pipeline subassembly is including ignition gas pipeline, ignition oxygen pipeline, ignition penetrate and inhale unit and ignition mist pipeline, ignition gas pipeline with ignition oxygen pipeline equallyd divide do not with the unit connection is inhaled in the ignition, the ignition penetrate inhale the unit with the one end of ignition mist pipeline is connected, the other end of ignition mist pipeline with cutting oxygen pipeline intercommunication.
5. The cutting torch for cutting an integrated ignition continuous casting slab as set forth in claim 4, wherein: the ignition injection and suction unit comprises an injection and suction chamber, a first nozzle and a second nozzle; the first nozzle and the second nozzle are both arranged in the jetting and sucking chamber; one end of the first nozzle is communicated with the ignition oxygen pipeline; the other end of the first nozzle is inserted into the second nozzle, and a gap is formed between the first nozzle and the second nozzle; the ignition gas pipeline is communicated with the gap; the first nozzle is communicated with the second nozzle, and the second nozzle is communicated with the ignition mixed gas pipeline.
6. The cutting torch for cutting an integrated ignition continuous casting slab as set forth in claim 5, wherein: and a sealing ring is arranged between the first nozzle and the jetting and sucking chamber, and a sealing ring is arranged between the second nozzle and the jetting and sucking chamber.
7. The integrated ignition cutting torch for continuous casting slab cutting according to claim 1, wherein: the cooling mechanism comprises a cooling water inlet pipe, a cooling water outlet pipe and a cooling circulation chamber, wherein one end of the cooling water inlet pipe is communicated with the cooling circulation chamber, and the other end of the cooling water inlet pipe penetrates through the shell to be communicated with the water inlet pipe; one end of the cooling water outlet pipe is communicated with the cooling circulation chamber, and the other end of the cooling water outlet pipe penetrates through the shell and is communicated with the water outlet pipe.
8. A continuous casting cutting machine comprising the integrated ignition cutting torch for continuous casting slab cutting according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210710241.XA CN114985696A (en) | 2022-06-22 | 2022-06-22 | Cutting torch for cutting integrated ignition continuous casting plate blank and continuous casting cutting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210710241.XA CN114985696A (en) | 2022-06-22 | 2022-06-22 | Cutting torch for cutting integrated ignition continuous casting plate blank and continuous casting cutting machine |
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| Publication Number | Publication Date |
|---|---|
| CN114985696A true CN114985696A (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210710241.XA Pending CN114985696A (en) | 2022-06-22 | 2022-06-22 | Cutting torch for cutting integrated ignition continuous casting plate blank and continuous casting cutting machine |
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| CN (1) | CN114985696A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117001101A (en) * | 2023-10-07 | 2023-11-07 | 陕西华秦新能源科技有限责任公司 | Oxyhydrogen cutting device based on two-stage ignition mode |
-
2022
- 2022-06-22 CN CN202210710241.XA patent/CN114985696A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117001101A (en) * | 2023-10-07 | 2023-11-07 | 陕西华秦新能源科技有限责任公司 | Oxyhydrogen cutting device based on two-stage ignition mode |
| CN117001101B (en) * | 2023-10-07 | 2024-01-12 | 陕西华秦新能源科技有限责任公司 | Oxyhydrogen cutting device based on two-stage ignition mode |
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