CN213513895U - Safety control device for preventing gas welding operation from backfire - Google Patents
Safety control device for preventing gas welding operation from backfire Download PDFInfo
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- CN213513895U CN213513895U CN202022463634.4U CN202022463634U CN213513895U CN 213513895 U CN213513895 U CN 213513895U CN 202022463634 U CN202022463634 U CN 202022463634U CN 213513895 U CN213513895 U CN 213513895U
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- electromagnetic valve
- backfire
- welding operation
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Abstract
The utility model discloses a safety control device for preventing gas welding operation from tempering, which relates to the technical field of gas welding and solves the technical problem of the existing gas welding operation tempering, the device comprises a mixing pipe, an oxygen pipe and an acetylene gas pipe which are connected with each other through a three-way joint, wherein one end of the mixing pipe is provided with an air nozzle mechanism, the oxygen pipe is provided with a first electromagnetic valve, the acetylene gas pipe is provided with a second electromagnetic valve, and the acetylene gas pipe between the three-way joint and the second electromagnetic valve is provided with a tempering preventer; the electromagnetic valve also comprises a control circuit which is electrically connected with the first electromagnetic valve and the second electromagnetic valve. The utility model discloses a back fire prevention ware can effectively prevent the back fire, cuts off oxygen and acetylene gas through first solenoid valve, second solenoid valve rapidly when taking place to back fire, and the installation nature is high.
Description
Technical Field
The utility model relates to a gas welding technical field, more specifically say, it relates to a prevent safety control device of gas welding operation tempering.
Background
The gas cutting gun is usually called as jet-suction cutting gun, it uses the high pressure of oxygen to suck acetylene gas to make mixed combustion, when the oxygen pipeline is blocked, the oxygen can not be normally jetted from mixing pipe, but can be reversely flowed into acetylene pipe from mixing position, and can be quickly combusted to produce the phenomenon of burning-out cutting tool and acetylene pipe, and its process is called as gas tempering. When the tempering occurs, equipment is damaged if the tempering occurs, and explosion occurs if the tempering occurs, so that the operation life safety of operators is threatened.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to the above-mentioned not enough of prior art, the utility model aims at providing a can prevent the safety control device of gas welding operation tempering.
The technical scheme of the utility model is that: a safety control device for preventing gas welding operation from backfire comprises a mixing tube, an oxygen tube and an acetylene gas tube which are mutually connected through a three-way joint, wherein one end of the mixing tube is provided with an air nozzle mechanism, the oxygen tube is provided with a first electromagnetic valve, the acetylene gas tube is provided with a second electromagnetic valve, and a backfire preventer is arranged on the acetylene gas tube between the three-way joint and the second electromagnetic valve; the electromagnetic valve also comprises a control circuit which is electrically connected with the first electromagnetic valve and the second electromagnetic valve.
As a further improvement, the air tap mechanism comprises an air tap connector connected with the mixing pipe and an air tap sleeved on the periphery of the air tap connector.
Further, the air tap connector is connected with the air tap through threads.
Furthermore, one end of the air tap is provided with a taper hole which is tightly matched with the end surface of the air tap joint.
Furthermore, one end of the oxygen pipe is provided with a filtering pressure regulating valve.
Furthermore, one end of the acetylene gas pipe is provided with a pressure regulating valve.
Furthermore, a first flow control valve is arranged on an oxygen pipe between the first electromagnetic valve and the three-way joint.
Furthermore, a pressure gauge is arranged on an oxygen pipe between the filtering and pressure regulating valve and the first electromagnetic valve.
Further, a second flow control valve is arranged on an acetylene gas pipe between the second electromagnetic valve and the backfire preventer.
Further, the control circuit comprises a temperature sensor and a controller, the temperature sensor is located on the acetylene gas pipe between the three-way joint and the backfire preventer, and the controller is electrically connected with the temperature sensor, the first electromagnetic valve and the second electromagnetic valve.
Advantageous effects
Compared with the prior art, the utility model, the advantage that has does:
the utility model discloses a through setting up the back fire prevention ware can effectively prevent the back fire, when taking place the back fire, can cut off oxygen and acetylene gas supply rapidly through first solenoid valve, second solenoid valve, the installation nature is high, has improved workman's production operation environment greatly.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the middle nozzle joint of the present invention;
fig. 3 is a schematic structural diagram of the middle nozzle of the present invention.
Wherein: the device comprises a three-way joint 1, a mixing pipe 2, an oxygen pipe 3, an acetylene gas pipe 4, an air nozzle mechanism 5, a first electromagnetic valve 6, a second electromagnetic valve 7, a backfire preventer 8, an air nozzle joint 9, an air nozzle 10, a taper hole 11, a filtering pressure regulating valve 12, a pressure regulating valve 13, a first flow control valve 14, a pressure gauge 15, a second flow control valve 16, a temperature sensor 17, an oxygen cylinder 18 and an acetylene gas cylinder 19.
Detailed Description
The invention will be further described with reference to specific embodiments shown in the drawings.
Referring to fig. 1-3, a safety control device for preventing gas welding operation from backfire comprises a mixing tube 2, an oxygen tube 3 and an acetylene gas tube 4 which are connected with each other through a three-way joint 1, wherein an air nozzle mechanism 5 is arranged at one end of the mixing tube 2, a first electromagnetic valve 6 is arranged on the oxygen tube 3, a second electromagnetic valve 7 is arranged on the acetylene gas tube 4, and a backfire preventer 8 is arranged on the acetylene gas tube 4 between the three-way joint 1 and the second electromagnetic valve 7. The control device also comprises a control circuit which is electrically connected with the first electromagnetic valve 6 and the second electromagnetic valve 7. Oxygen passes through oxygen pipe 3 and reaches mixing tube 2 through first solenoid valve 6, three way connection 1 in proper order, and acetylene gas passes through second solenoid valve 7, back fire prevention ware 8, three way connection 1 in proper order through acetylene gas pipe 4 and reaches mixing tube 2, and the mist is spout from air cock mechanism 5. The arrangement of the backfire preventer 8 can effectively prevent backfire, and when backfire occurs, the supply of oxygen and acetylene gas can be rapidly cut off through the first electromagnetic valve 6 and the second electromagnetic valve 7, so that the installation performance is high, and the production and operation environment of workers is greatly improved.
The air nozzle mechanism 5 comprises an air nozzle connector 9 connected with the mixing pipe 2 and an air nozzle 10 sleeved on the periphery of the air nozzle connector 9, the air nozzle connector 9 is connected with the air nozzle 10 through threads, and one end of the air nozzle 10 is provided with a taper hole 11 tightly matched with the end face of the air nozzle connector 9, so that air leakage is guaranteed. During actual connection, one end of the air nozzle joint 9 is inserted into the mixing pipe 2 and is hooped by a steel ring.
One end of the oxygen tube 3 is provided with a filtering and pressure regulating valve 12, and the filtering and pressure regulating valve 12 is connected with an oxygen bottle 18, so that the pressure of oxygen can be regulated, the oxygen can be filtered, and the blockage of the oxygen tube 3 is reduced. One end of the acetylene gas pipe 4 is provided with a pressure regulating valve 13, and the acetylene gas pipe is connected with an acetylene gas cylinder 19 through the pressure regulating valve 13 and used for regulating the pressure of the acetylene gas.
A first flow control valve 14 is arranged on the oxygen pipe 3 between the first electromagnetic valve 6 and the three-way joint 1 and is used for adjusting the oxygen flow of the air nozzle mechanism 5 in real time during working. A pressure gauge 15 is arranged on the oxygen pipe 3 between the filtering and pressure regulating valve 12 and the first electromagnetic valve 6 and is used for displaying the oxygen pressure of the air tap mechanism 5 in the working process in real time. A second flow control valve 16 is arranged on the acetylene gas pipe 4 between the second electromagnetic valve 7 and the backfire preventer 8 and is used for adjusting the acetylene gas flow in the working process of the gas nozzle mechanism 5 in real time.
The control circuit comprises a temperature sensor 17 and a controller, the controller is a temperature control module or a single chip microcomputer, the temperature sensor 17 is positioned on the acetylene gas pipe 4 between the three-way joint 1 and the backfire preventer 8, and the controller is electrically connected with the temperature sensor 17, the first electromagnetic valve 6 and the second electromagnetic valve 7. The temperature sensor 17 detects the temperature in the acetylene gas pipe 4 in real time, and when the backfire occurs, the controller controls the first electromagnetic valve 6 and the second electromagnetic valve 7 to be closed so as to rapidly cut off the supply of oxygen and acetylene gas.
The working principle is as follows:
when welding or cutting operation is required, the switches of an oxygen cylinder 18 and an acetylene cylinder 19 are respectively opened, a first electromagnetic valve 6 and a second electromagnetic valve 7 are opened, oxygen sequentially passes through a filtering and pressure regulating valve 12, the first electromagnetic valve 6, a first flow control valve 14 and a three-way joint 1 through an oxygen pipe 3 and reaches a mixing pipe 2, acetylene sequentially passes through a pressure regulating valve 13, the second electromagnetic valve 7, a second flow control valve 16, a backfire preventer 8 and the three-way joint 1 through an acetylene pipe 4 and reaches the mixing pipe 2, mixed gas is sprayed out of an air faucet 10 and is ignited, flames at the air faucet 10 are observed, the openings of the first flow control valve 14 and the second flow control valve 16 are respectively regulated until the requirements of the operation process are met, then operation is carried out, when slag accumulation or unsmooth at the air faucet 10 exists and the gas has a backflow situation, the flames only can reach the backfire preventer 8, and simultaneously a temperature sensor 17 detects backfire, the controller controls the first electromagnetic valve 6 and the second electromagnetic valve 7 to rapidly cut off the supply of oxygen and acetylene gas, thereby playing a good role in safety protection.
The above is only a preferred embodiment of the present invention, and it should be noted that for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which will not affect the utility of the invention and the utility of the patent.
Claims (10)
1. A safety control device for preventing gas welding operation from backfire comprises a mixing tube (2), an oxygen tube (3) and an acetylene gas tube (4) which are connected with each other through a three-way joint (1), and is characterized in that one end of the mixing tube (2) is provided with an air nozzle mechanism (5), the oxygen tube (3) is provided with a first electromagnetic valve (6), the acetylene gas tube (4) is provided with a second electromagnetic valve (7), and the acetylene gas tube (4) between the three-way joint (1) and the second electromagnetic valve (7) is provided with a backfire preventer (8); the electromagnetic valve also comprises a control circuit which is electrically connected with the first electromagnetic valve (6) and the second electromagnetic valve (7).
2. A safety control device for preventing backfire in gas welding operation as claimed in claim 1, wherein said gas nozzle mechanism (5) comprises a gas nozzle joint (9) for connecting said mixing tube (2), and a gas nozzle (10) sleeved on the periphery of said gas nozzle joint (9).
3. A safety control device for preventing backfire in gas welding operation as claimed in claim 2, wherein said gas nozzle adapter (9) is screwed to the gas nozzle (10).
4. A safety control device against backfire in gas welding operation as claimed in claim 2, characterized in that one end of said gas nipple (10) is provided with a tapered hole (11) which is closely fitted to the end surface of said gas nipple joint (9).
5. A safety control device for preventing backfire in gas welding operation as claimed in claim 1, wherein one end of said oxygen tube (3) is provided with a filtering pressure regulating valve (12).
6. A safety control device for preventing backfire in gas welding operation as claimed in claim 1, wherein one end of said acetylene gas pipe (4) is provided with a pressure regulating valve (13).
7. The safety control device for preventing the backfire of the gas welding operation as claimed in claim 1, wherein a first flow control valve (14) is provided on the oxygen pipe (3) between the first solenoid valve (6) and the three-way joint (1).
8. A safety control device for preventing backfire in gas welding operation as claimed in claim 5, characterized in that a pressure gauge (15) is provided on the oxygen pipe (3) between said filtering and pressure regulating valve (12) and said first solenoid valve (6).
9. A safety control device for preventing flashback in gas welding operation, as claimed in claim 1, wherein a second flow control valve (16) is provided on the acetylene gas pipe (4) between the second solenoid valve (7) and the flashback preventer (8).
10. A safety control device for preventing gas welding operation from backfiring according to any one of claims 1 to 9, wherein the control circuit comprises a temperature sensor (17) and a controller, the temperature sensor (17) is positioned on the acetylene gas pipe (4) between the three-way joint (1) and the backfire preventer (8), and the controller is electrically connected with the temperature sensor (17), the first electromagnetic valve (6) and the second electromagnetic valve (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463634.4U CN213513895U (en) | 2020-10-30 | 2020-10-30 | Safety control device for preventing gas welding operation from backfire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022463634.4U CN213513895U (en) | 2020-10-30 | 2020-10-30 | Safety control device for preventing gas welding operation from backfire |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213513895U true CN213513895U (en) | 2021-06-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022463634.4U Active CN213513895U (en) | 2020-10-30 | 2020-10-30 | Safety control device for preventing gas welding operation from backfire |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213513895U (en) |
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2020
- 2020-10-30 CN CN202022463634.4U patent/CN213513895U/en active Active
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