CN215862900U - Automatic steam purging device and system for liquefied petroleum gas steel cylinder - Google Patents
Automatic steam purging device and system for liquefied petroleum gas steel cylinder Download PDFInfo
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- CN215862900U CN215862900U CN202121663065.6U CN202121663065U CN215862900U CN 215862900 U CN215862900 U CN 215862900U CN 202121663065 U CN202121663065 U CN 202121663065U CN 215862900 U CN215862900 U CN 215862900U
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Abstract
The utility model discloses an automatic steam purging device and system for a liquefied petroleum gas steel cylinder, which comprises a main control, an air cylinder, a first control valve, a second control valve, a third control valve and an air guide connecting part, wherein the air cylinder is connected with the steel cylinder through the air guide connecting part, the first control valve is arranged in a steam pipeline and is electrically connected with the main control, the second control valve is arranged in an air compression pipeline and is also electrically connected with the main control, the third control valve is arranged in an exhaust pipeline and is electrically connected with the main control, and the main control realizes the control of the steam-washing time and the air pressure regulation in the steel cylinder by controlling the opening and closing sequence and the opening and closing duration time of the first control valve, the second control valve and the third control valve. According to the device, each action and time of purging are automatically controlled through the vertical steam purging of the steel cylinder, the operation is simple and convenient, and the operation efficiency is improved; meanwhile, the environmental pollution is reduced, and the treatment cost is reduced.
Description
Technical Field
The utility model relates to the technical field of treatment of residual liquid or residual gas in a liquefied petroleum gas steel cylinder in a periodic inspection process, in particular to an automatic steam purging device and system for the liquefied petroleum gas steel cylinder.
Background
According to the requirements of GB/T8334-2011 periodic inspection and evaluation of the liquefied petroleum gas steel cylinder, in the periodic inspection process of the liquefied petroleum gas steel cylinder, the steel cylinder is required to be subjected to steam purging or a method which does not influence the safety performance of the steel cylinder through safety evaluation is adopted to treat residual liquid or residual gas in the cylinder. After the treatment is finished, the concentration of the residual gas after purging in the cylinder is measured by a combustible gas detector, and the residual liquid and the residual gas in the cylinder are treated again for the steel cylinder with the concentration higher than 0.4 percent (volume). The currently used methods for treating residual gas include: steam purging and cylinder burning.
Steel cylinder incineration: the whole steel cylinder is sent to a steel cylinder incinerator for incineration, the incineration temperature is difficult to control, and the safety performance of the steel cylinder is affected; the fuel cost for burning is high, the smoke treatment difficulty after burning is high, and the environmental pollution is large.
Steam purging: the existing steam purging is performed because the steel cylinder is inverted: the steel cylinder is inverted on a steam purging device, residual liquid and residual gas in the steel cylinder are purged by using steam, under the general condition, the steam pressure is more than or equal to 0.2MPa, and the purging time is not less than 3 min. The whole purging process is manually controlled by time and pressure, and the purging time cannot be ensured in the purging process, so that the concentration of residual gas in the bottle exceeds the standard; when the steel cylinder is inverted, residual gas in the cylinder can also leak out, so that environmental pollution is caused.
SUMMERY OF THE UTILITY MODEL
Based on the defects of the prior art, the utility model provides an automatic steam purging device and system for a liquefied petroleum gas steel cylinder, and solves the problems that in the prior art, the treatment cost of a residual liquid or residual gas treatment link in the steel cylinder is high, the environmental pollution is large, and the treatment effect is poor due to the fact that automatic control cannot be realized.
The technical scheme of the utility model is as follows:
the utility model provides an automatic steam of liquefied petroleum gas steel bottle sweeps device which characterized in that: the air cylinder control system comprises a main control part, an air cylinder, a first control valve, a second control valve, a third control valve and an air guide connecting part;
the air guide connecting component comprises an air pipe body, a first connecting part communicated with the air pipe body is arranged at the upper end of the air pipe body, the first connecting part can be detachably and hermetically connected with the output end of the air cylinder, a second connecting part communicated with the air pipe body is arranged at the lower end of the air pipe body, and the air pipe body is detachably and hermetically connected with the opening of the steel cylinder through the second connecting part;
the side edge cylindrical surface of the air pipe body is provided with an inlet which is communicated with a steam generator through a steam pipeline, the steam generator is used for providing purging steam for the steel cylinder and is used for steam washing of the steel cylinder, the inlet is also communicated with an air compressor through an air compression pipeline, and the air compressor is used for providing compressed air for the steel cylinder and extruding and discharging steam purging residues in the steel cylinder;
a guide pipe is embedded in the air guide connecting component, one end of the guide pipe extends out of the side wall of the air pipe body and then is communicated with the exhaust pipeline, and the other end of the guide pipe extends into the steel cylinder;
in addition, the first control valve is arranged in the steam pipeline and is electrically connected with a main control, the second control valve is arranged in the air compression pipeline and is also electrically connected with the main control, the third control valve is arranged in the exhaust pipeline and is electrically connected with the main control, and the main control realizes the control of the steam washing time and the air pressure regulation in the steel cylinder by controlling the opening and closing sequence and the opening and closing duration time of the first control valve, the second control valve and the third control valve;
in addition, the cylinder is used for compressing the steel bottle, prevents that gas in the steel bottle from revealing, just the master control of cylinder with the master control electricity is connected, also by its action of master control.
Preferably, the master control adopts a PLC controller.
Preferably, the first control valve is a pneumatic high-temperature ball valve.
Preferably, the second control valve is a pneumatic high-temperature ball valve.
Preferably, the third control valve is a pneumatic high-temperature ball valve.
Preferably, a check valve is further arranged in the exhaust pipeline to prevent the tail gas from flowing backwards.
Preferably, a basket type high temperature filter is further arranged in the exhaust pipeline and used for filtering solid particles discharged into the exhaust pipeline.
Preferably, the first connecting part is a hollow stud connecting part and can be in threaded connection with the output end of the air cylinder.
Preferably, the second connecting part is a straight insertion tube which can be directly inserted into the inlet of the steel cylinder or a wrapping fastener which wraps and buckles the steel cylinder outside the inlet of the steel cylinder.
The utility model provides an automatic steam purge system of liquefied petroleum gas steel bottle which characterized in that: include automatic steam of liquefied petroleum gas steel bottle sweep device, still include air compressor and steam generator, air compressor's output and air compression pipeline's input intercommunication, steam generator's output and steam pipeline's input intercommunication.
Furthermore, the system also comprises a plurality of gas storage tanks connected in series on the exhaust pipeline and an incinerator connected at the tail end of the exhaust pipeline.
The utility model has the beneficial effects that: according to the device, each action and time of purging are automatically controlled through the vertical steam purging of the steel cylinder, the operation is simple and convenient, and the operation efficiency is improved; meanwhile, the environmental pollution is reduced, and the treatment cost is reduced.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention;
FIG. 2 is a schematic view of the construction of the air guide connecting member of the present invention;
FIG. 3 is a schematic diagram of the system of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the features of the following embodiments and examples may be combined with each other without conflict.
As shown in fig. 1, an automatic steam purging device for a liquefied petroleum gas steel cylinder comprises a main control unit, a cylinder 1, a first control valve 2, a second control valve 3, a third control valve 4 and an air guide connecting part 5;
the air guide connecting part 5 comprises an air pipe body 51, a first connecting part 52 communicated with the air pipe body 51 is arranged at the upper end of the air pipe body 51, the first connecting part 52 is detachably and hermetically connected with the output end of the air cylinder 1, a second connecting part 53 communicated with the air pipe body is arranged at the lower end of the air pipe body 51, and the air pipe body 51 is detachably and hermetically connected with the opening of the steel cylinder 7 through the second connecting part 53;
an inlet 54 is arranged on the side cylindrical surface of the air pipe body 51, the inlet 54 is communicated with a steam generator 6 through a steam pipeline 55, the inlet 54 and the steam pipeline 55 can adopt a threaded structure, the steam generator 6 is used for providing purging steam for the steel cylinder 7 and used for steam washing of the steel cylinder 7, the inlet 54 is also communicated with an air compressor 8 through an air compression pipeline 56, and the air compressor 8 is used for providing compressed air for the steel cylinder 7 and extruding and discharging steam purging residues in the steel cylinder 7;
as shown in fig. 2, a guide tube 57 is further embedded in the air guide connecting part 5, one end of the guide tube 57 extends to an outlet 571 outside the sidewall of the air tube body 51 and then is communicated with the exhaust duct 58, and the other end of the guide tube 57 extends into the steel cylinder 7.
In addition, the first control valve 2 is arranged in the steam pipeline 55 and is electrically connected with a main control, the second control valve 3 is arranged in the air compression pipeline 56 and is also electrically connected with the main control, the third control valve 4 is arranged in the exhaust pipeline 58 and is electrically connected with the main control, and the main control controls the opening and closing sequence and the opening and closing duration of the first control valve 2, the second control valve 3 and the third control valve 4 to realize the control of the steaming and washing time and the air pressure regulation in the steel cylinder;
in addition, the cylinder 1 is used for compressing the steel cylinder and preventing gas in the steel cylinder from leaking, and the main control of the cylinder 1 is electrically connected with the main control and is also controlled by the main control to act.
In this embodiment, the main control is a PLC controller, or may be controlled by a time relay. The first control valve, the second control valve and the third control valve are all pneumatic high-temperature ball valves.
And a check valve 9 is also arranged in the exhaust pipeline 58 to prevent the exhaust gas from flowing backwards.
The exhaust duct 58 is also provided with a basket type high temperature filter 10 for filtering solid particles discharged into the exhaust duct.
It should be noted that the first connection portion 52 is a hollow stud connection portion and can be screwed with the output end of the cylinder 1, and the second connection portion 53 is a straight insertion tube which can be directly inserted into the opening of the steel cylinder or a wrapping fastener which wraps and buckles the opening of the steel cylinder, and is compressed by the cylinder 1, and is sealed and buckled at the opening of the steel cylinder.
The working principle of the device is explained by using a PLC controller to control the purging process.
1. The steel cylinder is vertically placed, the air cylinder is installed at the opening of the steel cylinder through the air guide connecting part, the switch is controlled by the air cylinder, the PLC controls the electromagnetic pneumatic control valve of the air cylinder, the air cylinder acts, the steel cylinder is tightly connected with the air guide connecting part, and the opening of the steel cylinder is in a sealed state within a certain range of air pressure in the steel cylinder;
2. the steam sweeps and begins, the PLC controller opens first control valve earlier, the third control valve, first control valve and third control valve open, blow 0.4MPa steam into the steel bottle, tail gas discharges through the exhaust duct simultaneously, open first control valve and third control valve, make the air inlet of steel bottle and the air outlet of steel bottle form the passageway, avoid the inside atmospheric pressure of steel bottle to too big danger that causes, blow 0.4MPa steam into the steel bottle simultaneously, can drive the original gas of reserving in the steel bottle, make the interior storage of steel bottle 0.4 MPa's steam.
3. And 5S, controlling the third control valve to act by the PLC, closing the third control valve, continuously blowing 0.4MPa steam into the steel cylinder, steaming and washing the steel cylinder, and after 5S, evacuating the tail gas in the steel cylinder and blowing the steam into the steel cylinder.
4. After 15S, the PLC controls the first control valve to act, the first control valve is closed, and the steel cylinder keeps the pressure of 0.4MPa steam.
5. And after 15S, the PLC controls the third control valve to act, the third control valve is opened, the steam in the steel cylinder is discharged through the tail gas pipeline, the steam process is basically finished, and the steam after steam washing is discharged after the third control valve is opened.
6. And 5S, controlling the second control valve to act by the PLC, opening the second control valve, blowing 0.7MPa of compressed air into the steel cylinder, discharging residual tail gas through a discharge pipeline, and completely extruding and discharging the participating steam in the steel cylinder by connecting the 0.7MPa of compressed air because the pressure of the air is greater than the steam washing pressure.
7. After 20S, the PLC controls the second control valve to act, the second control valve is opened, the third control valve is kept opened, residual gas in the steel cylinder is continuously discharged through the discharge pipeline, and steam in the steel cylinder is completely discharged through time control.
8. And 5S, controlling the cylinder and the third control valve to act by the PLC, closing the third control valve, lifting the cylinder, completing the steam purging process, removing the steel cylinder from the steam purging device, and completing the steam cleaning process.
In the above steps, the time is set in consideration of the influence of time on the steaming and washing effect in the actual situation, according to the actual situation, the size of the steel cylinder and the pressure of steaming and washing, the time parameter is adjustable, meanwhile, the pressure of steam is adjustable, the air pressure of an air compressor is also adjustable, but the air pressure of the air compressor is larger than that of the steam, so that the steam can be expelled. In addition, the pressure of the steam and the pressure of the air compressor are also given appropriate ranges in combination with safety standards.
In addition, in the process, tail gas treatment can be carried out through a plurality of gas storage tanks 101 connected in series on the exhaust pipeline and an incinerator 102 connected to the tail end of the exhaust pipeline.
If a time relay is adopted, the processing principle is the same.
As shown in fig. 3, the embodiment further provides an automatic vapor purging system for a liquefied petroleum gas steel cylinder, which includes the automatic vapor purging device for a liquefied petroleum gas steel cylinder, and further includes an air compressor 8 and a vapor generator 6, an output end of the air compressor is communicated with an input end of an air compression pipeline, and an output end of the vapor generator is communicated with an input end of a vapor pipeline.
The system also comprises a plurality of air storage tanks 101 connected in series on the exhaust pipeline and an incinerator 102 connected at the tail end of the exhaust pipeline.
The system can integrally realize the steaming and washing of the steel cylinder.
The above embodiments are merely representative of the centralized embodiments of the present invention, and the description thereof is specific and detailed, but it should not be understood as the limitation of the scope of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the spirit of the present invention, and these changes and modifications all fall into the protection scope of the present invention. Therefore, the protection scope of the present patent should be subject to the appended claims.
Claims (10)
1. The utility model provides an automatic steam of liquefied petroleum gas steel bottle sweeps device which characterized in that: the air cylinder control system comprises a main control part, an air cylinder, a first control valve, a second control valve, a third control valve and an air guide connecting part;
the air guide connecting component comprises an air pipe body, the upper end of the air pipe body is provided with a first connecting part communicated with the air pipe body, the first connecting part is detachably and hermetically connected with the output end of the air cylinder, the lower end of the air pipe body is provided with a second connecting part communicated with the air pipe body, and the air pipe body is detachably and hermetically connected with the opening of the steel cylinder through the second connecting part;
the side edge cylindrical surface of the air pipe body is provided with an inlet which is communicated with a steam generator through a steam pipeline, the steam generator is used for providing purging steam for the steel cylinder and is used for steam washing of the steel cylinder, the inlet is also communicated with an air compressor through an air compression pipeline, and the air compressor is used for providing compressed air for the steel cylinder and extruding and discharging steam purging residues in the steel cylinder;
a guide pipe is embedded in the air guide connecting component, one end of the guide pipe extends out of the side wall of the air pipe body and then is communicated with the exhaust pipeline, and the other end of the guide pipe extends into the steel cylinder;
in addition, the first control valve is arranged in the steam pipeline and is electrically connected with a main control, the second control valve is arranged in the air compression pipeline and is also electrically connected with the main control, the third control valve is arranged in the exhaust pipeline and is electrically connected with the main control, and the main control realizes the control of the steam washing time and the air pressure regulation in the steel cylinder by controlling the opening and closing sequence and the opening and closing duration time of the first control valve, the second control valve and the third control valve;
in addition, the cylinder is used for compressing the steel bottle, prevents that gas in the steel bottle from revealing, just the master control of cylinder with the master control electricity is connected, also by its action of master control.
2. The automatic steam purge apparatus for lpg cylinder as set forth in claim 1, wherein: the main control adopts a PLC controller.
3. The automatic steam purge apparatus for lpg cylinder as set forth in claim 1, wherein: the first control valve adopts a pneumatic high-temperature ball valve.
4. The automatic steam purge apparatus for lpg cylinder as set forth in claim 1, wherein: the second control valve adopts a pneumatic high-temperature ball valve.
5. The automatic steam purge apparatus for lpg cylinder as set forth in claim 1, wherein: and the third control valve adopts a pneumatic high-temperature ball valve.
6. The automatic steam purge apparatus for lpg cylinder as set forth in claim 1, wherein: and a check valve is also arranged in the exhaust pipeline to prevent the tail gas from flowing backwards.
7. The automatic steam purge apparatus for lpg cylinder as set forth in claim 1, wherein: and a basket type high-temperature filter is also arranged in the exhaust pipeline and is used for filtering solid particles discharged into the exhaust pipeline.
8. The automatic steam purge apparatus for lpg cylinder as set forth in claim 1, wherein: the first connecting part is a hollow stud connecting part and can be in threaded connection with the output end of the cylinder, and the second connecting part is a straight insertion tube which can be directly inserted into the inlet of the steel cylinder or a wrapping fastener which is wrapped and buckled outside the inlet of the steel cylinder.
9. The utility model provides an automatic steam purge system of liquefied petroleum gas steel bottle which characterized in that: the automatic steam purging device for the liquefied petroleum gas steel cylinder of any one of claims 1 to 5, further comprising an air compressor and a steam generator, wherein the output end of the air compressor is communicated with the input end of the air compression pipeline, and the output end of the steam generator is communicated with the input end of the steam pipeline.
10. The automatic vapor purge system for lpg cylinders of claim 9, wherein: also comprises a plurality of gas storage tanks connected in series on the exhaust pipeline and an incinerator connected at the tail end of the exhaust pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121663065.6U CN215862900U (en) | 2021-07-21 | 2021-07-21 | Automatic steam purging device and system for liquefied petroleum gas steel cylinder |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121663065.6U CN215862900U (en) | 2021-07-21 | 2021-07-21 | Automatic steam purging device and system for liquefied petroleum gas steel cylinder |
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| CN215862900U true CN215862900U (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570716A (en) * | 2022-02-28 | 2022-06-03 | 中国船舶重工集团公司第七一九研究所 | Flow control system for steam pipeline purging and targeting |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114570716A (en) * | 2022-02-28 | 2022-06-03 | 中国船舶重工集团公司第七一九研究所 | Flow control system for steam pipeline purging and targeting |
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