Nitrogen replacement device for converter gas holder
By designing a converter gas cabinet nitrogen replacement device that uses a converter gas press to replace air, the problem of low ventilation efficiency and high cost during maintenance in the prior art is solved, and a nitrogen replacement with simple operation and high efficiency is achieved Effect.
Patent Information
- Application Number
- CN202420513072.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-15
- Publication Date
- 2025-02-18
- Estimated Expiration
- 2034-03-15
AI Technical Summary
In the prior art, when the converter gas cabinet is bottomed, special blowers and special pipes are required to be used, resulting in low ventilation efficiency, high cost and complex operation.
A converter gas cabinet nitrogen replacement device is designed, and the original converter gas press is used to replace air, and nitrogen replacement is achieved through components such as inlet and outlet valves, return valves and discharge pipes, without connecting special pipelines.
The operation process is simplified, the replacement time is shortened, the maintenance efficiency is improved, and the cost is reduced. Moreover, due to the large air supply of the pressurized machine, nitrogen replacement can be completed faster.
Smart Images
Figure CN222499217U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of converter gas holders, in particular to a nitrogen replacement device for a converter gas holder. Background Art
[0002] When the converter gas holder needs to be lowered to the bottom for maintenance, for the safety of the maintenance personnel, it is necessary to first replace the gas with nitrogen, and then use air to replace the nitrogen, so as to ensure that there is enough oxygen in the gas holder. Normally, when the air replaces the nitrogen, it is necessary to use a maintenance blower to ventilate the converter gas holder. The blower supplies air to the converter gas holder, and the air is released through the converter gas holder to replace the nitrogen. However, this method requires a separate maintenance blower, and the connecting pipe between the converter gas holder and the maintenance blower must be connected before subsequent operations can be carried out. The ventilation efficiency is slow and the cost is high. Utility Model Content
[0003] The technical problem to be solved by the utility model is to provide a nitrogen replacement device for a converter gas tank in view of the above-mentioned deficiencies in the prior art. The device does not need to be connected to a dedicated pipeline during operation, can effectively simplify the operation, shorten the replacement time, and improve the maintenance efficiency. The device is easy to use and highly practical.
[0004] The technical solution adopted by the utility model is: a nitrogen replacement device for a converter gas holder, comprising a converter gas compressor, wherein the input end of the converter gas compressor is connected with the converter gas holder through an inlet pipe, an inlet valve is provided on the inlet pipe, an air inlet is provided on the inlet pipe between the inlet valve and the converter gas compressor, a sealing plate is provided on the air inlet, an outlet valve is provided at the output end of the converter gas compressor, an outlet valve is provided on the outlet valve, an outlet pipe is provided, and the other end of the outlet pipe is connected with the inlet pipe.
[0005] As a further improvement, the inlet pipe is connected to the lower end of the converter gas holder, and the upper end of the converter gas holder is provided with a vent pipe connected thereto.
[0006] Furthermore, the discharge pipe is in an L-shaped structure, and an electromagnetic switch valve is provided at the upper end of the discharge pipe.
[0007] Furthermore, a reflux valve is provided between the outlet pipe and the inlet pipe, the inlet end of the reflux valve is connected to the outlet pipe, and the outlet end of the reflux valve is connected to the inlet pipe.
[0008] Furthermore, an oxygen detector for detecting the oxygen content inside the detector is provided on one side of the converter gas cabinet.
[0009] Furthermore, the outlet valve is a three-way reversing valve, one output end of the outlet valve is connected to the gas pipeline, and the other output end of the outlet valve is connected to the outlet pipeline.
[0010] Beneficial Effects
[0011] Compared with the prior art, the utility model has the following advantages:
[0012] The utility model discloses a nitrogen replacement device for a converter gas holder. When the converter gas holder needs to be lowered for maintenance, after the converter gas holder completes the replacement of the gas with nitrogen, the sealing cover of the air inlet between the converter gas compressor and the inlet valve is opened. At the same time, the inlet valve and the outlet valve are closed, and then the converter gas compressor is started. Then, the outlet valve and the reflux valve are opened. Air flows in from the air inlet at the front end of the converter gas compressor, is pressurized by the converter gas compressor, flows out from the converter gas outlet pipe, enters the converter gas inlet pipe through the reflux valve, and is sent to the converter in the reverse direction. Gas tank, release nitrogen through the vent pipe of the converter gas tank until the oxygen detector detects that the oxygen content in the converter gas tank reaches 19.5%, completing the air replacement nitrogen operation of the converter gas tank. This process uses the original converter gas compressor to replace the air, and there is no need to purchase a special blower, saving costs. At the same time, there is no need to connect the pipeline between the special blower for maintenance and the converter gas tank, which improves work efficiency. The air supply of the converter gas compressor is generally larger than that of the special blower for maintenance, which can shorten the replacement operation time. It is easy to use and has a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a schematic diagram of the main structure of the utility model.
[0014] Among them: 1-inlet valve, 2-air inlet, 3-converter gas compressor, 4-outlet valve, 5-outlet pipeline, 6-reflux valve, 7-inlet pipeline, 8-vent pipe, 9-converter gas cabinet, 10-electromagnetic switch valve, 11-oxygen detector, 12-sealing cover. DETAILED DESCRIPTION
[0015] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.
[0016] See also Figure 1As shown, a nitrogen replacement device for a converter gas holder of the utility model comprises a converter gas compressor 3. The input end of the converter gas compressor 3 is connected with the converter gas holder 9 through an inlet pipe 7. An inlet valve 1 is provided on the inlet pipe 7. An air inlet 2 is provided on the inlet pipe 7 between the inlet valve 1 and the converter gas compressor 3. A sealing cover 12 is provided on the air inlet 2. An outlet valve 4 is provided on the output end of the converter gas compressor 3. An outlet pipe 5 is provided on the outlet valve 4. The other end of the outlet pipe 5 is connected with the inlet pipe 7. When the converter gas holder 9 needs to be lowered for maintenance, after the converter gas holder 9 completes the nitrogen replacement of the gas, the sealing cover 12 of the air inlet 2 between the converter gas compressor 3 and the inlet valve 1 is opened. At the same time, the inlet valve 1 and the outlet valve 4 are closed. Then the converter gas compressor 3 is started, and then Then, the outlet valve 4 and the reflux valve 6 are opened, and air flows in from the air inlet 2 at the front end of the converter gas compressor 3. After being pressurized by the converter gas compressor 3, the air flows out from the outlet pipe 5 of the converter gas, enters the inlet pipe 7 of the converter gas through the reflux valve 6, and is sent back to the converter gas holder 9. The nitrogen is released through the vent pipe 8 of the converter gas holder 9 until the oxygen detector 11 detects that the oxygen content in the converter gas holder 9 reaches 19.5%, thereby completing the air replacement nitrogen operation of the converter gas holder 9. This process utilizes the original converter gas compressor 3 to replace the air, and there is no need to purchase a special blower, thus saving costs. At the same time, there is no need to connect the pipeline between the special blower for maintenance and the converter gas holder, thus improving work efficiency. In addition, the air supply volume of the converter gas compressor 3 is generally larger than that of the special blower for maintenance, which can shorten the replacement operation time.
[0017] Specifically, the inlet pipe 7 is connected to the lower end of the converter gas tank 9, and the upper end of the converter gas tank 9 is provided with a vent pipe 8 connected thereto, so that air discharges nitrogen from the lower end upwards, so that the nitrogen discharge is more thorough and efficient.
[0018] Preferably, the vent pipe 8 has an L-shaped structure, and an electromagnetic switch valve 10 is provided at the upper end of the vent pipe 8. When nitrogen is replaced, the electromagnetic switch valve 10 opens to allow nitrogen to be discharged from the vent pipe 8. When the converter gas tank 9 is normally used, the electromagnetic switch valve 10 is in a closed state to prevent gas leakage.
[0019] Furthermore, a reflux valve 6 is provided between the outlet pipe 5 and the inlet pipe 7, the inlet end of the reflux valve 6 is connected to the outlet pipe 5, and the outlet end of the reflux valve 6 is connected to the inlet pipe 7. When the air in the outlet pipe 5 reaches a certain pressure, the reflux valve 6 is opened so that the gas can quickly flow into the converter gas tank 9.
[0020] Furthermore, an oxygen detector 11 for detecting the oxygen content inside the converter gas tank 9 is provided on one side thereof. The replacement operation is completed only after the oxygen detector 11 detects that the oxygen content in the converter gas tank 9 reaches 19.5%.
[0021] Furthermore, the outlet valve 4 is a three-way reversing valve, one of the output ends of the outlet valve 4 is connected to the gas pipeline, and the other output end of the outlet valve 4 is connected to the outlet pipeline 5. When replacement is not required, the outlet valve 4 is connected to the gas pipeline, so that the fuel gas is pressurized for use through the converter gas compressor 3.
[0022] When a nitrogen replacement device for a converter gas holder of the present embodiment is in use, when the converter gas holder 9 needs to be lowered to the bottom for inspection and maintenance, after the converter gas holder 9 completes the replacement of gas with nitrogen, the sealing cover 12 of the air inlet 2 located between the converter gas compressor 3 and the inlet valve 1 is opened, and at the same time, the inlet valve 1 and the outlet valve 4 are closed, and then the converter gas compressor 3 is started, and then the outlet valve 4 and the reflux valve 6 are opened, and air flows in from the air inlet 2 at the front end of the converter gas compressor 3, and after being pressurized by the converter gas compressor 3, it flows out from the outlet pipe 5 of the converter gas, enters the inlet pipe 7 of the converter gas through the reflux valve 6, and is sent to the converter gas holder 9 in the reverse direction, and the nitrogen is released through the vent pipe 8 of the converter gas holder 9 until the oxygen detector 11 detects that the oxygen content in the converter gas holder 9 reaches 19.5%, and the air replacement nitrogen operation of the converter gas holder 9 is completed. The utility model discloses a nitrogen replacement device for a converter gas cabinet, which does not need to be connected to a special pipeline during operation, can effectively simplify the operation, shorten the replacement time, and improve the maintenance efficiency, and has the characteristics of being easy to use and highly practical.
[0023] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.
Claims
1. A nitrogen replacement device for a converter gas tank, characterized in that: The invention comprises a converter gas compressor (3), wherein the input end of the converter gas compressor (3) is connected to a converter gas tank (9) via an inlet pipe (7), the inlet pipe (7) is provided with an inlet valve (1), the inlet pipe (7) between the inlet valve (1) and the converter gas compressor (3) is provided with an air inlet (2), the air inlet (2) is provided with a sealing cover (12), the output end of the converter gas compressor (3) is provided with an outlet valve (4), the outlet valve (4) is provided with an outlet pipe (5), the other end of the outlet pipe (5) is connected to the inlet pipe (7).
2. A converter gas tank nitrogen replacement device according to claim 1, characterized in that: The inlet pipe (7) is connected to the lower end of the converter gas holder (9), and the upper end of the converter gas holder (9) is provided with a vent pipe (8) communicating therewith.
3. A converter gas holder nitrogen replacement device according to claim 2, characterized in that: The discharge pipe (8) is in an L-shaped structure, and an electromagnetic switch valve (10) is provided at the upper end of the discharge pipe (8).
4. A converter gas holder nitrogen replacement device according to claim 1, characterized in that: A reflux valve (6) is provided between the outlet pipe (5) and the inlet pipe (7); the inlet end of the reflux valve (6) is connected to the outlet pipe (5), and the outlet end of the reflux valve (6) is connected to the inlet pipe (7).
5. The nitrogen replacement device for a converter gas tank according to claim 1, characterized in that: An oxygen detector (11) for detecting the oxygen content inside the detector is provided on one side of the converter gas cabinet (9).
6. The nitrogen replacement device for a converter gas tank according to claim 1, characterized in that: The outlet valve (4) is a three-way reversing valve, one output end of the outlet valve (4) is connected to the gas pipeline, and the other output end of the outlet valve (4) is connected to the outlet pipeline (5).