CN216715537U - Rapid nitrogen filling device for heating furnace gas system - Google Patents
Rapid nitrogen filling device for heating furnace gas system Download PDFInfo
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- CN216715537U CN216715537U CN202122938223.0U CN202122938223U CN216715537U CN 216715537 U CN216715537 U CN 216715537U CN 202122938223 U CN202122938223 U CN 202122938223U CN 216715537 U CN216715537 U CN 216715537U
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- valve body
- valve
- joint
- spring
- valve core
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 239000007789 gas Substances 0.000 title claims abstract description 37
- 229910052757 nitrogen Inorganic materials 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 title claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 12
- 238000004880 explosion Methods 0.000 abstract description 6
- 239000003034 coal gas Substances 0.000 description 3
- 241001622901 Scomberomorus commerson Species 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 210000002445 nipple Anatomy 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000233805 Phoenix Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model relates to a rapid nitrogen filling device for a heating furnace gas system, which comprises a rapid joint, a flange and a metal corrugated pipe, wherein the rapid joint comprises an outer joint and an inner joint; the outer joint comprises a first valve core, a first valve body, a locking ball, a first spring and a first outer sleeve, wherein the first valve core is arranged in the first valve body; the inner joint comprises a second valve core, a second valve body and a second spring, the second valve core is arranged in the second valve body, the second spring is arranged between the second valve body and the second valve core, and the second valve body is sleeved in the first valve body. The advantages are that: simple structure is reasonable, shortens the activity duration, and during emergency, only need connect quick-operation joint can realize filling the nitrogen gas function, avoids gas system to take place the backfire explosion accident, improves gas system's factor of safety.
Description
Technical Field
The utility model belongs to the field of heating furnace maintenance, and particularly relates to a rapid nitrogen filling device for a heating furnace gas system.
Background
A nitrogen filling system of a hot-rolling 1580 heating furnace of Spanish mackerel ring division company, a stockpiled Spanish mackerel ring division company is designed and manufactured by Beijing Phoenix industrial furnace Co.
The function of the nitrogen charging system is as follows: the combustion system of the heating furnace uses mixed gas with normal pressure of 13000 Pa. When the furnace is normally shut down or a fault occurs, nitrogen is required to be filled into the pipeline to replace gas, so that the gas system is prevented from backfire explosion. The original design nitrogen charging system is directly connected with the coal gas system through a DN65 ball valve, a flange and a carbon steel pipe. There are the following problems: 1) the device does not conform to the gas safety regulation of industrial enterprises 7.5.2, in order to prevent gas from flowing into a steam or nitrogen pipe, the steam or nitrogen pipe can be communicated with a gas pipeline only when the steam or nitrogen is introduced, and a blind plate is disconnected or blocked when the device is not used.
2) After improvement, a stainless steel plate with the thickness of 3mm is additionally arranged between the ball valve and the flange, but in emergency, due to the fact that the gas is stopped by beating an emergency stop button, the pressure of a gas system is reduced to 0 after the stop valve of the gas main pipe is cut off, nitrogen filling needs to be carried out by contacting with a maintainer to disassemble 4M 16X 60 bolts on site, and the flange connection is recovered to carry out nitrogen filling after the blind plate is taken out. The 3 furnaces take at least 2 hours to complete the operation, during which the gas piping is highly susceptible to major backfire explosion accidents.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide the rapid nitrogen filling device for the heating furnace gas system, which can rapidly connect the nitrogen pipeline and the gas pipeline in emergency, avoid the gas system from backfire explosion accidents and improve the safety coefficient of the gas system.
In order to achieve the purpose, the utility model is realized by the following technical scheme:
a rapid nitrogen filling device for a heating furnace gas system comprises a rapid joint, a flange and a metal corrugated pipe, wherein the rapid joint comprises an outer joint and an inner joint;
the outer joint comprises a first valve core, a first valve body, a locking ball, a first spring and a first outer sleeve, wherein the first valve core is arranged in the first valve body;
the inner joint comprises a second valve core, a second valve body and a second spring, the second valve core is arranged in the second valve body, one end of the second spring is fixedly connected with the second valve body, the other end of the second spring is abutted against the second valve core, the second valve core and the second valve body are sealed through a conical surface, the valve body is sleeved in the first valve body, and a locking groove matched with the locking ball is formed in the outer wall of the second valve body.
The valve further comprises an O-shaped ring, and the O-shaped ring is arranged in the first valve body.
The gas pipeline and the metal corrugated pipe are connected through a gas pipeline, and the gas pipeline and the metal corrugated pipe are connected through a nitrogen pipeline.
Compared with the prior art, the utility model has the beneficial effects that:
the device has simple and reasonable structure, shortens the operation time, can realize the nitrogen filling function only by connecting the quick connector in case of emergency, avoids the coal gas system from backfire explosion accidents, and improves the safety factor of the coal gas system. When the gas-gas separator is disconnected, the quick connector plays the role of a one-way valve, and when the gas-gas separator is disconnected, the quick connector is automatically closed to prevent gas and nitrogen from escaping, so that injury accidents are caused.
Drawings
Fig. 1 is a schematic structural view of a rapid nitrogen charging apparatus for a furnace gas system.
Fig. 2 is a schematic connection diagram of the quick coupling.
Fig. 3 is a schematic structural diagram of the external joint.
Figure 4 is a schematic view of the construction of the nipple.
In the figure: 1-external joint 2-internal joint 3-flange 4-metal bellows 5-ball valve 6-valve core I7-valve body I8-locking ball 9-spring I10-O-shaped ring 11-outer sleeve I12-valve body II 13-spring II 14-locking groove 15-valve core II 16-conical surface.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings, but it should be noted that the present invention is not limited to the following embodiments.
Referring to fig. 1-4, a rapid nitrogen charging device for a heating furnace gas system comprises a quick connector, a flange 3 and a metal corrugated pipe 4, wherein the quick connector is connected to one end of the metal corrugated pipe 4 and comprises an outer connector 1 and an inner connector 2, the outer connector 1 is fixedly connected to one end of the metal corrugated pipe 4, the other end of the metal corrugated pipe 4 is connected with a ball valve 5 through the flange 3, the ball valve 5 is connected with a gas pipeline, and the metal corrugated pipe 4 can be used for stroke compensation. The nipple 2 is connected with a ball valve 5 through a flange 3, and the ball valve 5 is connected with a nitrogen pipeline. When the ball valve 5 is disconnected, the two ends are normally closed to prevent gas and nitrogen from leaking, and when the ball valve is connected, nitrogen filling operation can be realized.
The outer joint 1 comprises a first valve core 6, a first valve body 7, a locking ball 8, a first spring 9 and a first outer sleeve 11, wherein the first valve core 6 is arranged in the first valve body 7, one end of the first spring 9 is fixedly connected with the first valve body 7, the other end of the first spring abuts against the first valve core 6, the first outer sleeve 11 and the first valve body 7 can be connected in a sliding mode through a ball, and the locking ball 8 is connected in the first valve body 7; an O-ring 10 is arranged in the valve body I7 and used for sealing the inner joint 2 and the outer joint 1. The inner joint 2 comprises a second valve core 15, a second valve body 12 and a second spring 13, the second valve core 15 is arranged in the second valve body 12, one end of the second spring 13 is fixedly connected with the second valve body 12, the other end of the second spring abuts against the second valve core 15, the second valve body 12 is sleeved in the first valve body 7, and a locking groove 14 matched with the locking ball 8 is formed in the outer wall of the second valve body 12. When the inner joint 2 is inserted into the outer joint 1, the locking ball 8 is clamped into the locking groove 14 to realize connection of the inner joint and the outer joint, the first valve core 6 and the second valve core 15 are in butt joint and retreat at the valve core heads, and the first spring 9 and the second spring 13 are compressed to realize intercommunication of internal media. When the valve is disconnected, the first outer sleeve 11 is moved backwards, the locking ball 8 pops up, the outer joint 1 and the inner joint 2 are quickly separated under the acting forces of the first spring 9 and the second spring 13, the first valve core 6 and the second valve core 15 reset under the action of spring force, and the conical surface 16 between the valve cores and the valve body is contacted to realize automatic closing. Greatly reducing the operation time and improving the operation efficiency.
The rapid nitrogen filling device for the gas system of the heating furnace can realize the operation of a single operator without any tool, and realize the rapid nitrogen filling operation, thereby reducing the backfire explosion probability of the gas system. The single-person operation under emergency is realized.
Claims (3)
1. A rapid nitrogen filling device for a heating furnace gas system is characterized by comprising a rapid joint, a flange and a metal corrugated pipe, wherein the rapid joint comprises an outer joint and an inner joint;
the outer joint comprises a first valve core, a first valve body, a locking ball, a first spring and a first outer sleeve, wherein the first valve core is arranged in the first valve body;
the inner joint comprises a second valve core, a second valve body and a second spring, the second valve core is arranged in the second valve body, one end of the second spring is fixedly connected with the second valve body, the other end of the second spring is abutted against the second valve core, the second valve core and the second valve body are sealed through a conical surface, the valve body is sleeved in the first valve body, and a locking groove matched with the locking ball is formed in the outer wall of the second valve body.
2. The rapid nitrogen charging device for the heating furnace gas system according to claim 1, further comprising an O-ring, wherein the O-ring is disposed in the first valve body.
3. The rapid nitrogen charging device for the heating furnace gas system according to claim 1, further comprising a ball valve, wherein the ball valve is connected between the metal corrugated pipe and the gas pipeline, and the ball valve is connected between the inner joint and the nitrogen pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122938223.0U CN216715537U (en) | 2021-11-25 | 2021-11-25 | Rapid nitrogen filling device for heating furnace gas system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122938223.0U CN216715537U (en) | 2021-11-25 | 2021-11-25 | Rapid nitrogen filling device for heating furnace gas system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216715537U true CN216715537U (en) | 2022-06-10 |
Family
ID=81880594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122938223.0U Active CN216715537U (en) | 2021-11-25 | 2021-11-25 | Rapid nitrogen filling device for heating furnace gas system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216715537U (en) |
-
2021
- 2021-11-25 CN CN202122938223.0U patent/CN216715537U/en active Active
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