WO2022252506A1 - 液态二氧化碳充装方法及系统 - Google Patents

液态二氧化碳充装方法及系统 Download PDF

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Publication number
WO2022252506A1
WO2022252506A1 PCT/CN2021/131583 CN2021131583W WO2022252506A1 WO 2022252506 A1 WO2022252506 A1 WO 2022252506A1 CN 2021131583 W CN2021131583 W CN 2021131583W WO 2022252506 A1 WO2022252506 A1 WO 2022252506A1
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Prior art keywords
carbon dioxide
filling
liquid carbon
weight
difference
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PCT/CN2021/131583
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English (en)
French (fr)
Inventor
李大海
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惠州凯美特气体有限公司
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Publication of WO2022252506A1 publication Critical patent/WO2022252506A1/zh

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/02Special adaptations of indicating, measuring, or monitoring equipment
    • F17C13/023Special adaptations of indicating, measuring, or monitoring equipment having the mass as the parameter
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00Details of vessels or of the filling or discharging of vessels
    • F17C13/04Arrangement or mounting of valves
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00Handled fluid, in particular type of fluid
    • F17C2221/01Pure fluids
    • F17C2221/013Carbone dioxide
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2223/00Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107Single phase
    • F17C2223/0123Single phase gaseous, e.g. CNG, GNC
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107Single phase
    • F17C2225/0123Single phase gaseous, e.g. CNG, GNC
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17CVESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/04Indicating or measuring of parameters as input values
    • F17C2250/0404Parameters indicated or measured
    • F17C2250/0421Mass or weight of the content of the vessel

Definitions

  • the invention relates to a liquid carbon dioxide filling method and system.
  • Liquid carbon dioxide belongs to hazardous chemicals, and the category of dangerous goods is 2-2.
  • Hazardous chemicals under the national key supervision so liquid carbon dioxide production enterprises belong to the two key enterprises under the national key supervision and one major enterprise, and have relatively high safety management requirements.
  • With the advancement of the country's three-year action rectification plan for hazardous chemical production enterprises more and more attention has been paid to the safety production management of carbon dioxide production enterprises.
  • tank trucks are usually used to fill and transport liquid carbon dioxide. With the high safety performance of tank trucks, the safety of filling and transportation of liquid carbon dioxide is effectively improved.
  • the liquid carbon dioxide in the ball tank is transported to the tank of the tank truck through the hose.
  • a method for filling liquid carbon dioxide comprising: obtaining the on-board weight of a tank truck, wherein the on-board weight includes the weight of liquid carbon dioxide in the tank; performing a re-difference operation on the on-board weight and a preset weight to obtain a re-compensation difference value; adjust the opening and closing state of the filling pipeline according to the replenishment difference, so that the vehicle weight matches the preset weight.
  • a liquid carbon dioxide filling system comprising: a spherical tank, a filling pipeline, a shut-off valve assembly, a filling pump, a weighbridge and a filling control board, the spherical tank is used to store liquid carbon dioxide;
  • the filling pipeline includes a liquid phase tube and a gas phase tube, the first end of the liquid phase tube and the first end of the gas phase tube are in communication with the spherical tank, the second end of the liquid phase tube and the second end of the gas phase tube are both Used to communicate with the tank of the tank truck, the liquid phase pipe is used for the delivery of liquid carbon dioxide, and the gas phase pipe is used for the delivery of gaseous carbon dioxide;
  • the shut-off valve assembly includes a first shut-off valve and a second shut-off valve, the first A shut-off valve is connected to the liquid phase pipe, the first shut-off valve is used to open and close the liquid phase pipe, the second shut-off valve is connected to the gas phase pipe, and the second shut-off valve is
  • Fig. 1 is the flowchart of liquid carbon dioxide filling method in an embodiment
  • Fig. 2 is a schematic diagram of a liquid carbon dioxide filling system in an embodiment.
  • FIG. 1 is a flowchart of a liquid carbon dioxide filling method according to an embodiment of the present invention.
  • the liquid carbon dioxide filling method includes part or all of the following steps.
  • the on-board weight includes the weight of the tank truck and the weight of the liquid carbon dioxide, that is, the on-board weight includes the weight of the mechanical body of the tank truck and the weight of the liquid carbon dioxide in the tank, that is, the weight of the tank truck
  • the vehicle weight mentioned above is the total weight of the tank truck.
  • the weight of the mechanical body of the tank car is a fixed value, and only the weight of the liquid carbon dioxide in the tank is variable.
  • the weight of the liquid carbon dioxide in the tank needs to be adjusted according to actual needs.
  • the weight of the liquid carbon dioxide in the tank can be any less than the weight when it is full, and the tank can even be without liquid carbon dioxide. empty tank, and as the filling continues, the on-board weight will continue to increase until it is filled to the required filling capacity, that is, the difference between the current on-board weight and the initial on-board weight is the weight of liquid carbon dioxide. Filling weight.
  • S200 Perform a re-difference operation on the vehicle weight and a preset weight to obtain a re-compensation difference.
  • the preset weight is the built-in vehicle weight of the system. For example, after the tanker is parked on the weighbridge, according to the weight weighed by the weighbridge, the specified liquid carbon dioxide filling control system is input into the filling control system.
  • Loading weight that is, the preset weight.
  • the vehicle-mounted weight is the current total weight of the tank truck, and it is necessary to carry out a different operation on the vehicle-mounted weight to facilitate the calculation of the filling weight of the liquid carbon dioxide in the tank truck, so as to facilitate the filling weight of the specified liquid carbon dioxide
  • the obtained refilling difference is to judge the current filling weight of liquid carbon dioxide in the tank car, which is convenient for subsequent adjustment of the filling process of liquid carbon dioxide according to the refilling difference.
  • S300 Adjust the opening and closing state of the filling pipeline according to the replenishment difference, so that the vehicle weight matches the preset weight.
  • the recompensation difference reflects the difference between the weight of the current liquid carbon dioxide in the tank car and the weight of the standard liquid carbon dioxide, and the recompensation difference is used to determine whether the current liquid carbon dioxide in the tank car appears overcharge situation.
  • the filling pipeline needs to be closed to prevent further filling; and when there is no liquid carbon dioxide overcharging, it indicates that the current weight of liquid carbon dioxide in the tanker has not reached the specified weight. Need to continue to fill, at this time the filling pipeline is opened and continues to fill until it reaches the specified weight before closing.
  • the current weight of the tank car is determined, which is convenient to know the weight of the liquid carbon dioxide in the tank by refilling the difference, so as to facilitate the liquid carbon dioxide in the tank.
  • Carbon dioxide filling ensures that the weight of the tank car after filling meets the standard, reduces the probability of overfilling the liquid carbon dioxide in the tank car, thereby improving the filling accuracy of liquid carbon dioxide.
  • the performing a difference operation on the on-board weight and the preset weight to obtain a supplementary difference includes: performing weight difference processing on the on-board weight and the initial weight to obtain a first supplementary difference .
  • the weight difference processing is to distinguish the difference between the vehicle weight and the initial weight, and the initial weight is the initial weight of the tank car after it is parked on the weighbridge, that is, the initial weight is the tank car Total weight before filling begins.
  • the difference between the current weight of the tank car and the initial weight is preliminarily determined, which is convenient for determining the weight gain of the current weight of the tank car relative to the initial weight, thereby facilitating the determination of the tank car.
  • the added weight of the tanker facilitates the determination of the actual filling weight of the liquid carbon dioxide in the tank.
  • the performing a difference operation on the vehicle weight and the preset weight to obtain a supplementary difference further includes: performing weight supplementation processing on the first supplementary difference and the preset weight to obtain a second supplementary difference. Make up the difference.
  • the preset weight is used as the standard of the filling weight of the liquid carbon dioxide, and the preset weight is used as the upper limit of the allowed filling weight of the tank car during the filling process of the liquid carbon dioxide.
  • the first weight compensation difference and the preset weight are subjected to weight compensation processing, that is, the difference between the first weight compensation difference and the preset weight is calculated to facilitate the determination of the groove Whether the weight of the liquid carbon dioxide currently filled in the tanker exceeds the standard, so that it is convenient to close in time when there is overfilling, so as to achieve accurate filling of liquid carbon dioxide and effectively improve the filling accuracy of liquid carbon dioxide.
  • the adjusting the opening and closing state of the filling pipeline according to the refilling difference includes: detecting whether the refilling difference is less than a preset difference; when the refilling difference is less than the preset When there is a difference, an open signal is sent to the liquid carbon dioxide filling control system, so that the filling pipeline is opened and the liquid carbon dioxide is continuously delivered to the tank truck.
  • the preset difference is a standard weight difference, that is, the preset difference is that the filling weight of the liquid carbon dioxide in the tank car reaches or approaches the standard weight, for example, at this time the preset The difference is a weight difference range from the standard filling weight; for another example, the preset difference is 0.
  • detecting the magnitude relationship between the refill difference and the preset difference facilitates determining the magnitude relationship between the current filling weight of the liquid carbon dioxide in the tank car and the specified filling weight.
  • the refilling difference is less than the preset difference, indicating that the current filling weight of the liquid carbon dioxide in the tank car has not reached the specified filling weight, which means that the filling of the liquid carbon dioxide in the tank car has not been completed. Need to continue filling, so that the weight of liquid carbon dioxide in the tank car increases. Therefore, an opening signal is sent to the liquid carbon dioxide filling control system, so that the filling pipeline continues to fill the tank with liquid carbon dioxide.
  • sending an opening signal to the liquid carbon dioxide filling control system, so that the filling pipeline is opened and the liquid carbon dioxide is continuously delivered to the tank truck including: when the When the refilling difference is less than the preset difference, a first opening signal is sent to the liquid carbon dioxide filling control system, so that the first stop valve connected to the liquid phase pipe and the filling pump are in an open state, wherein the The liquid phase pipe is used to transport the liquid carbon dioxide in the spherical tank to the tank.
  • the liquid phase pipes communicate with the spherical tank and the tank respectively, and when the replenishment difference is less than the preset difference, the first cut-off valve connected to the liquid phase pipe and the The filling pump is turned on, so that the liquid carbon dioxide in the spherical tank flows smoothly and continuously to the tank.
  • the first shut-off valve connected to the liquid phase pipe and the filling pump are both in the open state, and the liquid carbon dioxide in the liquid phase pipe moves, that is, the liquid carbon dioxide in the liquid phase pipe is moved by the ball
  • the tank flows towards the tank to facilitate the transfer of liquid carbon dioxide from the ball tank to the tank.
  • a first opening signal is sent to the liquid carbon dioxide filling control system, so that the first shut-off valve connected to the liquid phase pipe and the filling pump is in the open state
  • a second open signal is sent to the liquid carbon dioxide filling control system, so that the second shut-off valve connected to the gas phase pipe is in the open state
  • the gas phase pipe is used to transport the gas in the tank To the spherical tank, for example, the gas phase pipe is used to transport the gaseous carbon dioxide in the tank to the spherical tank.
  • the liquid carbon dioxide in the tank has not been filled, that is, the current filling weight of the liquid carbon dioxide in the tank has not reached the standard weight , it is necessary to continue to fill the tank with liquid carbon dioxide. And because the tank needs to store liquid carbon dioxide in a closed environment, when the liquid phase pipe continues to fill the tank with liquid carbon dioxide, it is easy to cause the internal pressure of the tank to increase, and eventually cause the tank to explode.
  • the second shut-off valve connected to the gas phase pipe is opened, so that the gas in the tank is discharged through the gas phase pipe, so that the tank's The internal pressure is reduced to ensure that the internal pressure of the tank remains within a relatively stable and safe pressure range.
  • the detecting whether the refilling difference is smaller than a preset difference further includes: when the refilling difference is greater than or equal to the preset difference, filling the control system with liquid carbon dioxide Send a shutdown signal to close the filling line and block the delivery of liquid carbon dioxide to the tank truck.
  • the preset difference is a standard weight difference, that is, the preset difference is that the filling weight of the liquid carbon dioxide in the tank car reaches or approaches the standard weight, for example, at this time the preset The difference is a weight difference range from the standard filling weight; for another example, the preset difference is 0.
  • detecting the magnitude relationship between the refill difference and the preset difference facilitates determining the magnitude relationship between the current filling weight of the liquid carbon dioxide in the tank car and the specified filling weight.
  • the refilling difference is greater than or equal to the preset difference, indicating that the current filling weight of the liquid carbon dioxide in the tank car reaches or exceeds the specified filling weight, which means that the liquid carbon dioxide in the tank car is about to be overfilled. At this time, the filling needs to be stopped to avoid the continuous increase of liquid carbon dioxide in the tank car.
  • a shutdown signal is sent to the liquid carbon dioxide filling control system, so that the filling pipeline stops filling the tank with liquid carbon dioxide, which effectively avoids the filling of the liquid carbon dioxide in the tank car and improves the safety of the tank car. Filling accuracy of liquid carbon dioxide.
  • sending a shutdown signal to the liquid carbon dioxide filling control system so that the filling pipeline is closed and the delivery of liquid carbon dioxide to the tank truck is blocked, including :
  • send a closing signal to the liquid carbon dioxide filling control system so that the first shut-off valve, the second shut-off valve and the filling pump are closed state.
  • the liquid phase pipes are respectively communicated with the spherical tank and the tank. The valve and filling pump are closed, so that the liquid carbon dioxide in the spherical tank flows smoothly and continuously to the tank.
  • the first shut-off valve connected to the liquid phase pipe and the filling pump are both in the closed state, and the liquid carbon dioxide in the liquid phase pipe stops moving, that is, the liquid carbon dioxide in the liquid phase pipe stops moving.
  • the tank flows towards the tank so that the liquid carbon dioxide in the spherical tank is no longer delivered to the tank.
  • the liquid carbon dioxide in the tank has not been filled, that is, the current filling weight of the liquid carbon dioxide in the tank has reached the standard weight, and there is no need to continue to fill the tank.
  • the tank is filled with liquid carbon dioxide.
  • the tank needs to store the liquid carbon dioxide in a closed environment, when the liquid phase pipe stops filling the tank with liquid carbon dioxide, the internal pressure of the tank is likely to decrease.
  • the second shut-off valve connected to the gas phase pipe is opened, so that the internal pressure of the tank is stable, and the internal pressure of the tank is guaranteed to be maintained at a relatively stable and within the safe pressure range.
  • the adjustment of the opening and closing state of the filling pipeline according to the refilling difference, so that the vehicle weight matches the preset weight also includes: detecting the operation of the filling pipeline Whether the state is an out-of-control state; when the operation state of the filling pipeline is in the out-of-control state, an alarm signal is sent to the liquid carbon dioxide filling control system.
  • it is necessary to detect the current state of the filling pipeline that is, to determine whether the current state of the filling pipeline is in a normal working state, that is, to determine the current state of the filling pipeline. Is it effective and can be controlled.
  • Detecting whether the operation state of the filling pipeline is out of control is to monitor whether the filling pipeline is currently running, so as to facilitate detection of the working effectiveness of the filling pipeline.
  • the operation state of the filling pipeline is the out-of-control state, indicating that the current working state of the filling pipeline is a failure state, which means that the filling pipeline cannot be opened and closed accurately at present, that is, the
  • the control of the opening and closing state of the filling pipeline is out of control, for example, the first shut-off valve and the second shut-off valve connected to the filling pipeline cannot be closed and opened; The loaded pump cannot be stopped and started.
  • the control of the opening and closing state of the filling pipeline will be out of control, and the real-time control of the opening and closing state of the filling pipeline cannot be realized.
  • the liquid carbon dioxide The filling control system sends an alarm signal to make the liquid carbon dioxide filling control system give an alarm in time, so that the monitoring personnel can know in time the out-of-control state of the filling pipeline, so that the filling of liquid carbon dioxide can be stopped in time.
  • step S300 is directly performed at this time.
  • the opening and closing state of the filling pipeline is adjusted according to the replenishment difference, so that the vehicle weight matches the preset weight, and then includes:
  • the first cut-off valve is at the position where the liquid phase pipe is close to the spherical tank, the filling pump is in communication with the liquid phase pipe, and the filling pump is between the first cut-off valve and the tank.
  • Detecting the current opening and closing state of the filling pipeline is convenient for determining whether the tank car has been filled.
  • the filling pipeline is in a closed state, indicating that the filling of the liquid carbon dioxide has been completed, that is, indicating that the weight of the liquid carbon dioxide in the tank has reached the specified filling amount. At this time, liquid carbon dioxide remained in the liquid phase pipe, and the liquid carbon dioxide located between the first shut-off valve and the filling pump was more.
  • liquid carbon dioxide between the shut-off valve and the filling pump provides the transmission power, so that this part of the liquid carbon dioxide flows to the tank, reducing the waste of liquid carbon dioxide located between the first shut-off valve and the filling pump, and improving the use of liquid carbon dioxide rate, thereby reducing the filling cost of liquid carbon dioxide.
  • the filling pipeline remains connected to the spherical tank and the tank, that is, the liquid phase pipe at this time is still connected to the tank, wherein, for the setting of the preset time , can be set according to the variation of the vehicle weight of the tank truck, for example, detect whether the variation of the vehicle weight is equal to 0; when the variation of the vehicle weight is equal to 0, fill the control system with the liquid carbon dioxide Sends a power off signal to shut down the filling pump. In this way, it can be determined whether all the liquid carbon dioxide located between the first shut-off valve and the filling pump is delivered to the tank according to the variation of the vehicle weight of the tank truck.
  • the filling weight of the liquid carbon dioxide in the tank is to be less than the weight when full, so that the liquid carbon dioxide positioned between the first shut-off valve and the charging pump is delivered to the tank, and It is unlikely that the internal pressure of the tank is too large.
  • the adjustment of the opening and closing state of the filling pipeline according to the refilling difference includes:
  • the refill difference is the difference between the current filling weight of liquid carbon dioxide and the specified filling weight
  • the residual liquid weight of the tube is the weight of liquid carbon dioxide remaining in the liquid phase tube, that is, the The weight of residual liquid in the tube is the weight of the liquid carbon dioxide located between the first shut-off valve and the charging pump.
  • the pre-preset weight is obtained by comparing the refill difference with the weight value of liquid carbon dioxide remaining in the liquid phase tube by performing a pre-presetting operation on the residual liquid weight of the tube and the refill difference. It is to judge the size between the refill difference and the weight of the residual liquid in the tube.
  • the pre-set weight is equal to 0, indicating that the difference between the weight of the liquid carbon dioxide filled in the tank and the specified filling weight is equal to the weight of the liquid carbon dioxide remaining in the liquid phase tube, which means that the remaining liquid carbon dioxide in the liquid phase tube
  • the weight of the liquid carbon dioxide plus the weight of the liquid carbon dioxide currently in the tank equals the specified fill weight.
  • the operating state of the first shut-off valve and the filling pump is adjusted to the closed state, and a filling space is reserved for the liquid carbon dioxide remaining in the liquid phase pipe to continue filling, so that the liquid carbon dioxide remaining in the liquid phase pipe After the liquid carbon dioxide is filled into the tank, the total weight of the tank is still kept under the safe carrying weight, thereby effectively reducing the probability of overfilling the liquid carbon dioxide.
  • the preset weight is set as the weight of the liquid carbon dioxide when the tank is full or close to full
  • the filling pipeline is out of control, that is, the first shut-off valve, the second shut-off valve and the filling
  • the pump fails that is, the first shut-off valve, the second shut-off valve and the filling pump cannot be closed
  • it will still take a certain amount of time for the monitoring personnel to close the manual valve, which requires a certain amount of time. time, and this will also cause the tank to be full, and the extra liquid carbon dioxide will enter the gas phase pipe, which will cause the gas phase pipe to return the liquid carbon dioxide, resulting in a waste of liquid carbon dioxide.
  • send an alarm signal to the liquid carbon dioxide filling control system when the operation state of the filling pipeline is the out-of-control state, send an alarm signal to the liquid carbon dioxide filling control system, and then include:
  • the liquid carbon flow rate is the current flow rate of the liquid carbon dioxide in the liquid phase tube
  • the preset flow rate is the low flow rate of the liquid carbon dioxide in the liquid phase tube.
  • the current limiter is opened at this time to facilitate the flow restriction of the liquid carbon dioxide in the liquid phase pipe, delaying the flow of liquid carbon dioxide into the gas phase pipe, thereby reducing the flow rate of the liquid carbon dioxide gas in the tank to the phase pipe. probability.
  • the present application also provides a liquid carbon dioxide filling system, which is realized by using the liquid carbon dioxide filling method described in any of the above embodiments.
  • the liquid carbon dioxide filling device has functional modules corresponding to each step of the liquid carbon dioxide filling method. Referring to Fig.
  • the liquid carbon dioxide filling system 10 includes: a spherical tank 100, a filling pipeline 200, a shut-off valve assembly 300, a filling pump 400, a weighbridge 500 and a filling control board 600, and the spherical tank 100 is used for Store liquid carbon dioxide;
  • the filling pipeline 200 includes a liquid phase pipe 210 and a gas phase pipe 220, and the first end of the liquid phase pipe 210 and the first end of the gas phase pipe 220 are all communicated with the spherical tank 100, so The second end of the liquid phase pipe 210 and the second end of the gas phase pipe 220 are both used to communicate with the tank of the tank truck, the liquid phase pipe 210 is used for the delivery of liquid carbon dioxide, and the gas phase pipe 220 is used for Delivery of gaseous carbon dioxide;
  • the shut-off valve assembly 300 includes a first shut-off valve 310 and a second shut-off valve 320, the first shut-off valve 310 is connected to the liquid phase pipe 210, and the first
  • the phase pipe 210 is connected; the weighbridge 500 is used to carry the tank car and weigh the vehicle weight of the tank car; the filling control main board 600 is connected with the first shut-off valve 310 and the second shut-off valve 320 respectively , the filling pump 400 is connected to the weighbridge 500, and the filling control board 600 is used to adjust the opening and closing states of the first shut-off valve 310, the second shut-off valve 320 and the filling pump 400 , the filling control main board 600 is also used to collect the vehicle weight.
  • the filling control main board 600 obtains the on-board weight of the tank car through the weighbridge 500, and the filling control main board 600 is used to carry out a weight operation between the on-board weight and the preset weight to obtain the weight Compensation difference; the filling control board 600 is also used to adjust the opening and closing state of the filling pipeline 200 according to the refilling difference, so that the vehicle weight matches the preset weight.
  • the opening and closing state of the filling pipeline 200 is realized by controlling the opening and closing of the first shut-off valve 310 , the second shut-off valve 320 and the air pump.
  • the current weight of the tank car is determined, which is convenient for knowing the weight of the liquid carbon dioxide in the tank by refilling the difference, thereby facilitating the filling of the tank with liquid carbon dioxide. It ensures that the weight of the tank car after filling meets the standard, reduces the probability of overfilling the liquid carbon dioxide in the tank car, thereby improving the filling accuracy of the liquid carbon dioxide.
  • the shut-off valve assembly 300 in order to timely shut off the delivery of liquid carbon dioxide to the tank when the shut-off valve assembly and the charging pump are out of control, also includes a first manual shut-off valve 330 and a second manual shut-off valve.
  • Valve 340 the first manual shut-off valve 330 is connected to the liquid phase pipe 210, the first manual shut-off valve 330 is used to manually close the liquid phase pipe 210, the second manual shut-off valve 340 is connected to the gas phase
  • the pipe 220 is connected, and the second manual stop valve 340 is used to manually close the gas phase pipe 220.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filling Or Discharging Of Gas Storage Vessels (AREA)
  • Filling Of Jars Or Cans And Processes For Cleaning And Sealing Jars (AREA)

Abstract

一种液态二氧化碳充装方法,包括:获取槽罐车的车载重量,其中,所述车载重量包括槽罐内的液态二氧化碳的重量;将所述车载重量与预设重量进行重异操作,得到重补差值;根据所述重补差值调整充装管线的启闭状态,以使所述车载重量与所述预设重量匹配。在经过对车载重量与预设重量的比对后,确定了槽罐车的当前重量,便于通过重补差值知晓槽罐内的液态二氧化碳的重量,从而便于对槽罐进行液态二氧化碳充装,确保槽罐车在充装后的重量符合标准,降低了槽罐车内的液态二氧化碳的过量充装的几率,从而提高液态二氧化碳的充装精度。还公开了相应的液态二氧化碳充装系统。

Description

液态二氧化碳充装方法及系统 技术领域
本发明涉及一种液态二氧化碳充装方法及系统。
背景技术
液体二氧化碳属于危险化学品,危险品种类为2-2,属于压缩气体和液化气体类,液体二氧化碳生产企业属于危险化学品生产企业,且由于装置内会用到液氨做制冷机,液氨是国家重点监管的危险化学品,所以液体二氧化碳生产企业属于国家重点监管的两重点一重大企业,安全管理要求较高。随着国家对危险化学品生产企业的三年行动整改计划的推进,对二氧化碳生产企业的安全生产管理越来越重视。其中,为了确保液体二氧化碳的安全运输,通常采用槽罐车对液体二氧化碳进行充装以及运输,在槽罐车的高安全性能下,有效地提高了液体二氧化碳的充装以及运输的安全性。在实际充装过程中,在动力传输泵的作用下,通过软管将球罐内的液体二氧化碳输送至槽罐车的槽罐内。
然而,传统的充装设备的使用需要操作人员通过经验来判断动力传输泵的工作时长,容易导致槽罐车的液体二氧化碳出现过量充装的情况,使得对槽罐车内的液体二氧化碳的充装精度下降,严重地将导致槽罐车因超载而翻车,从而造成液体二氧化碳的泄漏,严重危害环境。
发明内容
基于此,有必要提供一种液态二氧化碳的充装精度较高的液态二氧化碳充装方法及系统。
一种液态二氧化碳充装方法,包括:获取槽罐车的车载重量,其中,所述车载重量包括槽罐内的液态二氧化碳的重量;将所述车载重量与预设重量进行重异操作,得到重补差值;根据所述重补差值调整充装管线的启闭状态, 以使所述车载重量与所述预设重量匹配。
一种液态二氧化碳充装系统,包括:球罐、充装管线、切断阀组件、充装泵、地磅以及充装控制主板,所述球罐用于储存液态二氧化碳;所述充装管线包括液相管以及气相管,所述液相管的第一端以及所述气相管的第一端均与所述球罐连通,所述液相管的第二端以及所述气相管的第二端均用于与槽罐车的槽罐连通,所述液相管用于液态二氧化碳的输送,所述气相管用于气态二氧化碳的输送;所述切断阀组件包括第一切断阀以及第二切断阀,所述第一切断阀与所述液相管连接,所述第一切断阀用于启闭所述液相管,所述第二切断阀与所述气相管连接,所述第二切断阀用于启闭所述气相管;所述充装泵与所述液相管连通;所述地磅用于承载槽罐车,并称量所述槽罐车的车载重量;所述充装控制主板分别与所述第一切断阀、所述第二切断阀、所述充装泵以及所述地磅连接,所述充装控制主板用于调整所述第一切断阀、所述第二切断阀以及所述充装泵的启闭状态,所述充装控制主板还用于采集所述车载重量。
本发明的一个或多个实施例的细节在下面的附图和描述中提出。本发明的其它特征、目的和优点将从说明书、附图以及权利要求书变得明显。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他实施例的附图。
图1为一实施例中液态二氧化碳充装方法的流程图;
图2为一实施例中液态二氧化碳充装系统的示意图。
具体实施方式
为了便于理解本发明,下面将参照相关附图对本发明进行更全面的描述。 附图中给出了本发明的较佳实施方式。但是,本发明可以以许多不同的形式来实现,并不限于本文所描述的实施方式。相反地,提供这些实施方式的目的是使对本发明的公开内容理解的更加透彻全面。
需要说明的是,当元件被称为“固定于”另一个元件,它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件,它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的,并不表示是唯一的实施方式。
除非另有定义,本文所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本文中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的,不是旨在于限制本发明。本文所使用的术语“及/或”包括一个或多个相关的所列项目的任意的和所有的组合。
请参阅图1,其为本发明一实施例的液态二氧化碳充装方法的流程图。所述液态二氧化碳充装方法包括以下步骤的部分或全部。
S100:获取槽罐车的车载重量,其中,所述车载重量包括槽罐内的液态二氧化碳的重量。
在本实施例中,所述车载重量包括槽罐车的载具重量以及液态二氧化碳的重量,即所述车载重量包括槽罐车的机械车体重量以及位于槽罐内的液态二氧化碳的重量,也即所述车载重量为槽罐车的总重量。在槽罐车的车辆型号确定的情况下,槽罐车的机械车体重量是固定值,只有位于槽罐内的液态二氧化碳的重量是变量。槽罐内的液态二氧化碳的重量是需要根据实际需求进行调整的,在开始充装前,槽罐内的液态二氧化碳的重量可以是任何小于满装时的重量,槽罐甚至可以是没有液态二氧化碳的空罐,而随着充装的继续,所述车载重量将发生持续增长,直至充装到所需要的充装量,即当前的车载重量与起始的车载重量的差值即为液态二氧化碳的充装重量。
S200:将所述车载重量与预设重量进行重异操作,得到重补差值。
在本实施例中,所述预设重量是系统内置的车载重量,例如,在槽罐车停放在地磅上后,根据地磅称量的重量,向液态二氧化碳充装控制系统输入指定的液态二氧化碳的充装重量,即所述预设重量。其中,所述车载重量是槽罐车的当前总重量,需要对所述车载重量进行重异操作,便于求取出槽罐车内的液态二氧化碳的充装重量,从而便于与指定的液态二氧化碳的充装重量进行比较,得出的重补差值是对槽罐车内当前的液态二氧化碳的充装重量的大小进行判断,便于后续根据所述重补差值调整液态二氧化碳的充装工艺。
S300:根据所述重补差值调整充装管线的启闭状态,以使所述车载重量与所述预设重量匹配。
在本实施例中,所述重补差值是对槽罐车内的当前液态二氧化碳的重量与标准的液态二氧化碳的重量的差异体现,所述重补差值用于确定槽罐车内的当前液态二氧化碳是否出现过充的情况。对于出现液态二氧化碳过充的情况,需要对充装管线进行关闭,以防止继续充装;而当未出现液态二氧化碳过充的情况,表明槽罐车内的当前液态二氧化碳的重量还没有达到指定重量,需要继续充装,此时充装管线开启并继续充装,直至达到指定重量后再关闭。
在上述实施例中,在经过对车载重量与预设重量的比对后,确定了槽罐车的当前重量,便于通过重补差值知晓槽罐内的液态二氧化碳的重量,从而便于对槽罐进行液态二氧化碳充装,确保槽罐车在充装后的重量符合标准,降低了槽罐车内的液态二氧化碳的过量充装的几率,从而提高了液态二氧化碳的充装精度。
在其中一个实施例中,所述将所述车载重量与预设重量进行重异操作,得到重补差值,包括:对所述车载重量与初始重量进行重量求异处理,得到第一重补差值。在本实施例中,所述重量求异处理是对所述车载重量与初始重量进行差异度区分,所述初始重量为槽罐车停放在地磅上后的初次重量,即所述初始重量为槽罐车开始充装之前的总重量。在经过对所述车载重量与初始重量的比对后,初步确定槽罐车的当前重量与初始重量之间的差异,便于确定槽罐车的当前重量相对于初始重量的增重情况,从而便于确定槽罐车 的增重重量,进而便于确定槽罐内的液态二氧化碳的实际充装重量。
进一步地,所述将所述车载重量与预设重量进行重异操作,得到重补差值,还包括:对所述第一重补差值与所述预设重量进行重量补差处理,得到第二重补差值。在本实施例中,所述预设重量作为液态二氧化碳的充装重量的标准,所述预设重量作为槽罐车在充装过程中液态二氧化碳允许充装的重量上限。通过所述预设重量的设置,将所述第一重补差值与所述预设重量进行重量补差处理,即对所述第一重补差值与所述预设重量进行求差,便于确定槽罐车当前充装的液态二氧化碳的重量是否超标,从而便于在出现充装过量时及时关闭,以达到对液态二氧化碳的精准充装,有效地提高了液态二氧化碳的充装精度。
在其中一个实施例中,所述根据所述重补差值调整充装管线的启闭状态,包括:检测所述重补差值是否小于预设差值;当所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送开启信号,以使充装管线打开并持续向槽罐车输送液体二氧化碳。在本实施例中,所述预设差值为标准重量差值,即所述预设差值为槽罐车内的液态二氧化碳的充装重量达到或者接近标准重量,例如,此时所述预设差值为一个与标准充装重量之间的重量差范围;又如,所述预设差值为0。这样,检测所述重补差值与所述预设差值之间的大小关系,便于确定槽罐车内液态二氧化碳的当前充装重量与指定的充装重量之间的大小关系。所述重补差值小于所述预设差值,表明了槽罐车内液态二氧化碳的当前充装重量还没有达到指定的充装重量,即表明了槽罐车内液态二氧化碳还没有充装完成,此时需要继续充装,以使得槽罐车内液态二氧化碳的重量增大。因此向液态二氧化碳充装控制系统发送开启信号,使得所述充装管线继续向槽罐内充装液态二氧化碳。
进一步地,所述当所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送开启信号,以使充装管线打开并持续向槽罐车输送液体二氧化碳,包括:当所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送第一开启信号,以使与液相管连接的第一截止阀以及充装泵处 于开启状态,其中,所述液相管用于将球罐内的液体二氧化碳输送至槽罐内。在本实施例中,所述液相管分别与球罐以及槽罐连通,在所述重补差值小于所述预设差值的情况下,与所述液相管连接的第一截止阀以及充装泵开启,使得球罐内的液态二氧化碳顺利且持续流向槽罐。在向液态二氧化碳充装控制系统发送第一开启信号后,与所述液相管连接的第一截止阀以及充装泵均处于打开的状态,所述液相管内的液态二氧化碳移动,即由球罐朝向槽罐流动,便于将球罐内的液体二氧化碳输送至槽罐内。
再进一步地,所述当所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送第一开启信号,以使与液相管连接的第一截止阀以及充装泵处于开启状态,之后还包括:向液态二氧化碳充装控制系统发送第二开启信号,以使与气相管连接的第二截止阀处于开启状态,其中,所述气相管用于将槽罐内的气体输送至球罐内,例如,所述气相管用于将槽罐内的气态二氧化碳输送至球罐内。在本实施例中,在所述重补差值小于所述预设差值的情况下,槽罐内的液态二氧化碳还没有充装完毕,即槽罐内液态二氧化碳的当前充装重量没有达到标准重量,需要继续向槽罐内充装液态二氧化碳。而由于槽罐需要在一个密闭环境下对液态二氧化碳进行储存,当所述液相管持续向槽罐内充装液态二氧化碳,容易导致槽罐的内压增大,最终容易导致槽罐爆炸。为了避免上述情况,通过向液态二氧化碳充装控制系统发送第二开启信号,以使与气相管连接的第二截止阀开启,使得槽罐内的气体通过所述气相管排出,从而使得槽罐的内压降低,确保槽罐的内压保持在一个相对稳定且安全的压强范围内。
在其中一个实施例中,所述检测所述重补差值是否小于预设差值,之后还包括:当所述重补差值大于或等于所述预设差值时,向液态二氧化碳充装控制系统发送关闭信号,以使充装管线关闭并阻断向槽罐车输送液体二氧化碳。在本实施例中,所述预设差值为标准重量差值,即所述预设差值为槽罐车内的液态二氧化碳的充装重量达到或者接近标准重量,例如,此时所述预设差值为一个与标准充装重量之间的重量差范围;又如,所述预设差值为0。 这样,检测所述重补差值与所述预设差值之间的大小关系,便于确定槽罐车内液态二氧化碳的当前充装重量与指定的充装重量之间的大小关系。所述重补差值大于或等于所述预设差值,表明了槽罐车内液态二氧化碳的当前充装重量达到或者超过指定的充装重量,即表明了槽罐车内液态二氧化碳即将出现过量充装的情况,此时需要停止充装,以避免槽罐车内液态二氧化碳的继续增大。因此向液态二氧化碳充装控制系统发送关闭信号,使得所述充装管线停止向槽罐内充装液态二氧化碳,有效地避免了槽罐车内液态二氧化碳出现的过滤充装情况,提高了对槽罐车内液态二氧化碳的充装精度。
进一步地,所述当所述重补差值大于或等于所述预设差值时,向液态二氧化碳充装控制系统发送关闭信号,以使充装管线关闭并阻断向槽罐车输送液体二氧化碳,包括:当所述重补差值大于或等于所述预设差值时,向液态二氧化碳充装控制系统发送关闭信号,以使所述第一截止阀、所述第二截止阀以及充装泵处于关闭状态。在本实施例中,所述液相管分别与球罐以及槽罐连通,在所述重补差值大于或等于所述预设差值的情况下,与所述液相管连接的第一截止阀以及充装泵关闭,使得球罐内的液态二氧化碳顺利且持续流向槽罐。在向液态二氧化碳充装控制系统发送关闭信号后,与所述液相管连接的第一截止阀以及充装泵均处于关闭的状态,所述液相管内的液态二氧化碳停止移动,即停止由球罐朝向槽罐流动,使得球罐内的液体二氧化碳不再输送至槽罐内。
而且,在所述重补差值小于所述预设差值的情况下,槽罐内的液态二氧化碳还没有充装完毕,即槽罐内液态二氧化碳的当前充装重量达到了标准重量,无需继续向槽罐内充装液态二氧化碳。而由于槽罐需要在一个密闭环境下对液态二氧化碳进行储存,当所述液相管停止向槽罐内充装液态二氧化碳,容易导致槽罐的内压减小。为了避免上述情况,通过向液态二氧化碳充装控制系统发送关闭信号,以使与气相管连接的第二截止阀开启,使得槽罐的内压稳定,确保槽罐的内压保持在一个相对稳定且安全的压强范围内。
在其中一个实施例中,所述根据所述重补差值调整充装管线的启闭状态, 以使所述车载重量与所述预设重量匹配,之前还包括:检测所述充装管线的运行状态是否为失控状态;当所述充装管线的运行状态为所述失控状态时,向液态二氧化碳充装控制系统发送报警信号。在本实施例中,在对充装管线的运行状态进行调整之前,需要对充装管线的当前状态进行检测,即确定充装管线的当前状态是否为正常工作状态,也即确定充装管线的是否有效而且能够被控制。检测所述充装管线的运行状态是否为失控状态,是对充装管线当前能否运行进行监控,便于对充装管线的工作有效性进行检测。所述充装管线的运行状态为所述失控状态,表明了所述充装管线的当前工作状态为失效状态,即表明了所述充装管线当前无法进行准确的启闭,也即对所述充装管线的启闭状态的控制出现失控的情况,例如,与所述充装管线连接的第一截止阀以及第二截止阀无法关闭和开启;又如,与所述充装管线连通的充装泵无法停止和启动。此时对于所述充装管线的启闭状态的控制将处于失控状态,无法实现对充装管线的启闭状态进行实时控制,为了避免槽罐内的液态二氧化碳过量充装的情况,向液态二氧化碳充装控制系统发送报警信号,使得液态二氧化碳充装控制系统进行及时报警,便于监控人员及时知晓所述充装管线的运行失控状态,从而便于及时将停止液态二氧化碳的充装。在本实施例中,在液态二氧化碳充装控制系统接收到报警信号后,会以声光报警的方式予以报警,监控人员即可及时手动关闭与充装管线连接的手动阀,例如,液相管上连接有第一手动截止阀,气相管上连接有第二手动截止阀。这样,在得知报警后,通过手动方式关闭第一手动截止阀以及第二手动截止阀即可,有效地避免了液态二氧化碳的过量充装的情况。在另一实施例中,当所述充装管线的运行状态不为所述失控状态时,即所述充装管线的运行状态为正常状态,此时直接执行步骤S300。
可以理解的,在对上一个槽罐车进行液态二氧化碳的充装完毕后,还会有部分液态二氧化碳残留在充装管线内,即液相管内还会有液态二氧化碳的残留液体。在槽罐车充装完毕后,液相管会与槽罐脱离,槽罐的进液口以及出气口将封闭,而液相管内残留的液态二氧化碳将直接与外部环境接触,此 时液态二氧化碳将吸收附近周边环境的热量,形成气态二氧化碳,最终将排向环境中,从而导致球罐的液态二氧化碳的浪费,进而增大了液态二氧化碳的充装成本。
为了减少对液态二氧化碳的浪费,所述根据所述重补差值调整充装管线的启闭状态,以使所述车载重量与所述预设重量匹配,之后还包括:
检测所述充装管线是否为关闭状态;
当所述充装管线为关闭状态时,在预设时间内启动充装泵,以使液相管内的液态二氧化碳输送至槽罐内。
在本实施例中,第一截止阀在液相管靠近球罐的位置,充装泵与液相管连通,充装泵在第一截止阀与槽罐之间。检测所述充装管线的当前启闭状态,便于确定槽罐车是否充装完毕。所述充装管线为关闭状态,表明了液态二氧化碳的充装以完成,即表明了槽罐内的液态二氧化碳的重量达到了指定充装量。此时液相管内残留有液态二氧化碳,其中位于第一截止阀与充装泵之间的液态二氧化碳较多,为了减少此部分的液态二氧化碳的浪费,重新启动所述充装泵,为位于第一截止阀与充装泵之间的液态二氧化碳提供输送动力,使得此部分的液态二氧化碳流向槽罐,减少了位于第一截止阀与充装泵之间的液态二氧化碳的浪费,提高了液态二氧化碳的使用率,从而降低了液态二氧化碳的充装成本。
在本实施例中,重新启动充装泵的过程中,所述充装管线保持与球罐以及槽罐连接,即此时的液相管还是与槽罐连通,其中,对于预设时间的设置,可以根据槽罐车的车载重量的变化情况进行设定,例如,检测所述车载重量的变化量是否等于0;当所述车载重量的变化量等于0时,向所述液态二氧化碳充装控制系统发送动力关闭信号,以使充装泵关闭。这样,根据槽罐车的车载重量的变化情况,即可确定位于第一截止阀与充装泵之间的液态二氧化碳是否全部输送至槽罐内。而且,在本实施例中,槽罐内的液态二氧化碳的充装重量是要小于满装时的重量,使得将位于第一截止阀与充装泵之间的液态二氧化碳输送至槽罐内,而不至于槽罐出现内部压力过大的情况。
进一步地,在液相管的长度较长或者口径较大的情况下,残留在液相管内的液态二氧化碳的体积将会较大,从而使得残留的液态二氧化碳的重量较重,容易导致在将此部分液态二氧化碳输送至槽罐后,出现过量充装的几率大幅度上升。为了减少上述情况的发生,所述根据所述重补差值调整充装管线的启闭状态,包括:
获取液相管的管型规格参数;
根据所述管型规格参数获取管残液重量;
对所述管残液重量与所述重补差值进行前置预置操作,得到前预置重量;
检测所述前预置重量是否等于0;
当所述前预置重量等于0时,关闭所述第一截止阀以及所述充装泵。
在本实施例中,所述重补差值是液态二氧化碳的当前充装重量与指定充装重量之间的差值,而所述管残液重量为液相管内残留的液态二氧化碳的重量,即所述管残液重量为位于第一截止阀与充装泵之间的液态二氧化碳的重量。通过对所述管残液重量与所述重补差值进行前置预置操作,是将所述重补差值与液相管内残留的液态二氧化碳的重量值进行比较,得到的所述前预置重量就是对重补差值与管残液重量之间的大小进行判断。所述前预置重量等于0,表明了槽罐内充装的液态二氧化碳的重量与指定的充装重量的差值与液相管内残留的液态二氧化碳的重量相等,即表明了液相管内残留的液态二氧化碳的重量加上当前槽罐内的液态二氧化碳的重量等于指定充装重量。这样,在此时将所述第一截止阀以及所述充装泵的运行状态调整为关闭状态,为液相管内残留的液态二氧化碳继续充装预留了充装空间,使得在液相管内残留的液态二氧化碳充装进槽罐后,槽罐的总重量还是保持在安全运载重量下,从而有效地降低了液态二氧化碳的过量充装的几率。
又进一步地,当所述预设重量设置为槽罐在满罐或者接近满罐时的液态二氧化碳的重量,一旦出现充装管线失控的情况,即第一截止阀、第二截止阀以及充装泵失效时,也即第一截止阀、第二截止阀以及充装泵出现无法关闭的情况,即使有警报信号发出,但是监控人员还是需要一定的时间才能去 将手动阀关闭,这就需要一定的时间,而这也将导致槽罐处于满罐的情况,而且多出来的液态二氧化碳将会进入气相管中,从而导致气相管将液态二氧化碳回流,进而导致液态二氧化碳的浪费。为了减少槽罐内的液态二氧化碳气通向相管的情况,所述当所述充装管线的运行状态为所述失控状态时,向液态二氧化碳充装控制系统发送报警信号,之后还包括:
获取液相管内的液碳流速;
检测所述液碳流速是否大于预设流速;
当所述液碳流速大于所述预设流速时,向液态二氧化碳充装控制系统发送阻滞信号,以使与液相管连通的限流器开启。
在本实施例中,所述液碳流速为液态二氧化碳在液相管内的当前流动速度,所述预设流速为液态二氧化碳在液相管内的低流速。在液态二氧化碳在液相管内的流速小于或等于所述预设流速时,可以为监控人员提供足够的手动关闭阀门的时间,而且,此段时间内液态二氧化碳不会流入气相管内。这样,在获取到所述液相管内液态二氧化碳的当前流速后,检测其与预设流速之间的大小关系,当液碳流速大于所述预设流速时,表明了所述液相管内液态二氧化碳的当前流速过大,此时开启所述限流器,便于对所述液相管内液态二氧化碳进行限流,延后液态二氧化碳流入气相管,从而降低槽罐内的液态二氧化碳气通向相管的几率。
本申请还提供一种液态二氧化碳充装系统,其采用上述任一实施例中所述的液态二氧化碳充装方法实现。在其中一个实施例中,所述液态二氧化碳充装装置具有用于实现所述液态二氧化碳充装方法各步骤对应的功能模块。请参阅图2,所述液态二氧化碳充装系统10包括:球罐100、充装管线200、切断阀组件300、充装泵400、地磅500以及充装控制主板600,所述球罐100用于储存液态二氧化碳;所述充装管线200包括液相管210以及气相管220,所述液相管210的第一端以及所述气相管220的第一端均与所述球罐100连通,所述液相管210的第二端以及所述气相管220的第二端均用于与槽罐车的槽罐连通,所述液相管210用于液态二氧化碳的输送,所述气相管220用 于气态二氧化碳的输送;所述切断阀组件300包括第一切断阀310以及第二切断阀320,所述第一切断阀310与所述液相管210连接,所述第一切断阀310用于启闭所述液相管210,所述第二切断阀320与所述气相管220连接,所述第二切断阀320用于启闭所述气相管220;所述充装泵400与所述液相管210连通;所述地磅500用于承载槽罐车,并称量所述槽罐车的车载重量;所述充装控制主板600分别与所述第一切断阀310、所述第二切断阀320、所述充装泵400以及所述地磅500连接,所述充装控制主板600用于调整所述第一切断阀310、所述第二切断阀320以及所述充装泵400的启闭状态,所述充装控制主板600还用于采集所述车载重量。在本实施例中,所述充装控制主板600通过所述地磅500获取槽罐车的车载重量,所述充装控制主板600用于将所述车载重量与预设重量进行重异操作,得到重补差值;所述充装控制主板600还用于根据所述重补差值调整充装管线200的启闭状态,以使所述车载重量与所述预设重量匹配。其中,所述充装管线200的启闭状态是通过控制第一切断阀310、第二切断阀320以及充气泵的开启和关闭实现的。而且,在经过对车载重量与预设重量的比对后,确定了槽罐车的当前重量,便于通过重补差值知晓槽罐内的液态二氧化碳的重量,从而便于对槽罐进行液态二氧化碳充装,确保槽罐车在充装后的重量符合标准,降低了槽罐车内的液态二氧化碳的过量充装的几率,从而提高了液态二氧化碳的充装精度。
在另一实施例中,为了便于在切断阀组件以及充装泵失控时,能及时关闭向槽罐输送液态二氧化碳,所述切断阀组件300还包括第一手动截止阀330以及第二手动截止阀340,所述第一手动截止阀330与所述液相管210连接,所述第一手动截止阀330用于手动关闭所述液相管210,所述第二手动截止阀340与气相管220连接,所述第二手动截止阀340用于手动关闭所述气相管220。
以上所述实施例的各技术特征可以进行任意的组合,为使描述简洁,未对上述实施例中的各个技术特征所有可能的组合都进行描述,然而,只要这些技术特征的组合不存在矛盾,都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式,其描述较为具体和详细,但并不能因此而理解为对发明专利范围的限制。应当指出的是,对于本领域的普通技术人员来说,在不脱离本发明构思的前提下,还可以做出若干变形和改进,这些都属于本发明的保护范围。因此,本发明专利的保护范围应以所附权利要求为准。

Claims (16)

  1. 一种液态二氧化碳充装方法,其特征在于,包括:
    获取槽罐车的车载重量,其中,所述车载重量包括槽罐内的液态二氧化碳的重量;
    将所述车载重量与预设重量进行重异操作,得到重补差值;
    根据所述重补差值调整充装管线的启闭状态,以使所述车载重量与所述预设重量匹配。
  2. 根据权利要求1所述的液态二氧化碳充装方法,其特征在于,所述车载重量包括槽罐车的机械车体重量以及位于槽罐内的液态二氧化碳的重量。
  3. 根据权利要求1所述的液态二氧化碳充装方法,其特征在于,所述将所述车载重量与预设重量进行重异操作,得到重补差值,包括:
    对所述车载重量与初始重量进行重量求异处理,得到第一重补差值。
  4. 根据权利要求2所述的液态二氧化碳充装方法,所述初始重量为槽罐车开始充装之前的总重量。
  5. 根据权利要求2所述的液态二氧化碳充装方法,其特征在于,所述将所述车载重量与预设重量进行重异操作,得到重补差值,还包括:
    对所述第一重补差值与所述预设重量进行重量补差处理,得到第二重补差值。
  6. 根据权利要求1所述的液态二氧化碳充装方法,其特征在于,所述根据所述重补差值调整充装管线的启闭状态,包括:
    检测所述重补差值是否小于预设差值;
    当所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送开启信号,以使充装管线打开并持续向槽罐车输送液体二氧化碳。
  7. 根据权利要求6所述的液态二氧化碳充装方法,其特征在于,所述检测所述重补差值是否小于预设差值,包括:
    检测所述重补差值是否小于0。
  8. 根据权利要求6所述的液态二氧化碳充装方法,其特征在于,所述当 所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送开启信号,以使充装管线打开并持续向槽罐车输送液体二氧化碳,包括:
    当所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送第一开启信号,以使与液相管连接的第一截止阀以及充装泵处于开启状态,其中,所述液相管用于将球罐内的液体二氧化碳输送至槽罐内。
  9. 根据权利要求8所述的液态二氧化碳充装方法,其特征在于,所述当所述重补差值小于所述预设差值时,向液态二氧化碳充装控制系统发送第一开启信号,以使与液相管连接的第一截止阀以及充装泵处于开启状态,之后还包括:
    向液态二氧化碳充装控制系统发送第二开启信号,以使与气相管连接的第二截止阀处于开启状态,其中,所述气相管用于将槽罐内的气体输送至球罐内。
  10. 根据权利要求9所述的液态二氧化碳充装方法,其特征在于,所述检测所述重补差值是否小于预设差值,之后还包括:
    当所述重补差值大于或等于所述预设差值时,向液态二氧化碳充装控制系统发送关闭信号,以使充装管线关闭并阻断向槽罐车输送液体二氧化碳。
  11. 根据权利要求10所述的液态二氧化碳充装方法,其特征在于,所述当所述重补差值大于或等于所述预设差值时,向液态二氧化碳充装控制系统发送关闭信号,以使充装管线关闭并阻断向槽罐车输送液体二氧化碳,包括:
    当所述重补差值大于或等于所述预设差值时,向液态二氧化碳充装控制系统发送关闭信号,以使所述第一截止阀、所述第二截止阀以及充装泵处于关闭状态。
  12. 根据权利要求1所述的液态二氧化碳充装方法,其特征在于,所述根据所述重补差值调整充装管线的启闭状态,以使所述车载重量与所述预设重量匹配,之前还包括:
    检测所述充装管线的运行状态是否为失控状态;
    当所述充装管线的运行状态为所述失控状态时,向液态二氧化碳充装控 制系统发送报警信号。
  13. 根据权利要求12所述的液态二氧化碳充装方法,其特征在于,所述当所述充装管线的运行状态为所述失控状态时,向液态二氧化碳充装控制系统发送报警信号,之后还包括:
    获取液相管内的液碳流速;
    检测所述液碳流速是否大于预设流速;
    当所述液碳流速大于所述预设流速时,向液态二氧化碳充装控制系统发送阻滞信号,以使与液相管连通的限流器开启。
  14. 根据权利要求1所述的液态二氧化碳充装方法,其特征在于,所述根据所述重补差值调整充装管线的启闭状态,包括:
    获取液相管的管型规格参数;
    根据所述管型规格参数获取管残液重量;
    对所述管残液重量与所述重补差值进行前置预置操作,得到前预置重量;
    检测所述前预置重量是否等于0;
    当所述前预置重量等于0时,关闭所述第一截止阀以及所述充装泵;
    所述根据所述重补差值调整充装管线的启闭状态,以使所述车载重量与所述预设重量匹配,之后还包括:
    检测所述充装管线是否为关闭状态;
    当所述充装管线为关闭状态时,在预设时间内启动充装泵,以使液相管内的液态二氧化碳输送至槽罐内。
  15. 一种液态二氧化碳充装系统,其特征在于,包括:
    球罐,所述球罐用于储存液态二氧化碳;
    充装管线,所述充装管线包括液相管以及气相管,所述液相管的第一端以及所述气相管的第一端均与所述球罐连通,所述液相管的第二端以及所述气相管的第二端均用于与槽罐车的槽罐连通,所述液相管用于液态二氧化碳的输送,所述气相管用于气态二氧化碳的输送;
    切断阀组件,所述切断阀组件包括第一切断阀以及第二切断阀,所述第 一切断阀与所述液相管连接,所述第一切断阀用于启闭所述液相管,所述第二切断阀与所述气相管连接,所述第二切断阀用于启闭所述气相管;
    充装泵,所述充装泵与所述液相管连通;
    地磅,所述地磅用于承载槽罐车,并称量所述槽罐车的车载重量;
    充装控制主板,所述充装控制主板分别与所述第一切断阀、所述第二切断阀、所述充装泵以及所述地磅连接,所述充装控制主板用于调整所述第一切断阀、所述第二切断阀以及所述充装泵的启闭状态,所述充装控制主板还用于采集所述车载重量。
  16. 根据权利要求15所述的液态二氧化碳充装系统,其特征在于,所述切断阀组件还包括第一手动截止阀以及第二手动截止阀,所述第一手动截止阀与所述液相管连接,所述第一手动截止阀用于手动关闭所述液相管,所述第二手动截止阀与气相管连接,所述第二手动截止阀用于手动关闭所述气相管。
PCT/CN2021/131583 2021-06-04 2021-11-18 液态二氧化碳充装方法及系统 WO2022252506A1 (zh)

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