WO2024098510A1 - 一种低沸点工质回收及储补装置 - Google Patents

一种低沸点工质回收及储补装置 Download PDF

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Publication number
WO2024098510A1
WO2024098510A1 PCT/CN2022/139326 CN2022139326W WO2024098510A1 WO 2024098510 A1 WO2024098510 A1 WO 2024098510A1 CN 2022139326 W CN2022139326 W CN 2022139326W WO 2024098510 A1 WO2024098510 A1 WO 2024098510A1
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Prior art keywords
connecting pipe
working fluid
storage tank
boiling
liquid
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PCT/CN2022/139326
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English (en)
French (fr)
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李龙
王俊逸
鞠贵冬
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双良节能系统股份有限公司
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Publication of WO2024098510A1 publication Critical patent/WO2024098510A1/zh

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
    • F25J1/00—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures
    • F25J1/02—Processes or apparatus for liquefying or solidifying gases or gaseous mixtures requiring the use of refrigeration, e.g. of helium or hydrogen ; Details and kind of the refrigeration system used; Integration with other units or processes; Controlling aspects of the process
    • F25J1/0228—Coupling of the liquefaction unit to other units or processes, so-called integrated processes

Definitions

  • the present invention relates to the technical field of equipment manufacturing, and more specifically to a low-boiling-point working fluid recovery and storage and replenishment device.
  • low-boiling-point working fluids include R22, R134a, R600a, R717, etc.
  • Most low-boiling-point working fluids have the characteristics of strong unit work capacity, moderate working pressure, small specific volume, good heat transfer performance, and not easy to decompose. They are widely used in refrigeration, heating, low-temperature power generation, waste heat utilization, and enhanced heat exchange.
  • the industry currently lacks specialized equipment for recycling, storing, and replenishing low-boiling-point working fluids, resulting in a large amount of low-boiling-point working fluids being wasted during maintenance and overhaul.
  • the purpose of the present invention is to provide a low-boiling point working fluid recovery and storage and replenishment device, which can realize the recovery, replenishment, injection and metering operations of low-boiling point working fluid, and avoid a large amount of low-boiling point working fluid being wasted during maintenance and overhaul.
  • the present invention provides the following technical solutions:
  • a low-boiling-point working fluid recovery and storage and replenishment device comprising: a heat pump, a working fluid storage tank, a working fluid pump for driving liquid flow, and a control device arranged in sequence from top to bottom, wherein the inlet side of the heat pump is provided with a first connecting pipe for connecting to the gas phase end of a process system, the outlet side of the heat pump is provided with a second connecting pipe for connecting to the liquid inlet end of the working fluid storage tank, the gas outlet end of the working fluid storage tank is provided with a third connecting pipe communicating with the first connecting pipe, the end of the third connecting pipe is an exhaust port, and the liquid outlet end of the working fluid storage tank is provided with a fourth connecting pipe connected to the liquid phase end of the process system;
  • the working fluid pump is provided on the fourth connecting pipe
  • the working fluid storage tank is provided with a liquid level gauge for detecting the liquid level in the tank
  • the first connecting pipe, the second connecting pipe, the third connecting pipe and the fourth connecting pipe are all provided with control valves, and the control valves and the liquid level gauge are both connected to the control device.
  • one end of the first connecting pipe is provided with a gas phase interface for connecting to the gas phase end, and the other end extends into the inlet side, and the control valve arranged on the first connecting pipe includes a process air inlet valve arranged near the gas phase interface and a heat pump inlet valve arranged near the inlet side.
  • control valve arranged on the second connecting pipe includes a heat pump outlet valve arranged close to the heat pump and a tank liquid inlet valve arranged close to the working fluid storage tank.
  • a liquid seal is provided between the heat pump outlet valve and the storage tank liquid inlet valve.
  • one end of the third connecting pipe is provided with an exhaust interface for connecting to a vacuum pump or an exhaust device, and the other end extends into the gas outlet end, and the control valve arranged on the third connecting pipe includes a tank exhaust valve arranged near the gas outlet end and a process exhaust valve arranged near the exhaust interface.
  • one end of the fourth connecting pipe is provided with a liquid phase outlet for connecting to the liquid phase end, and the other end extends into the liquid outlet end, and the control valve arranged on the fourth connecting pipe is a tank drain valve arranged close to the working fluid storage tank.
  • a fifth connecting pipe is provided between the storage tank discharge valve and the working fluid pump, a working fluid pump inlet valve connected to the control device is provided on the fifth connecting pipe, and a liquid phase inlet is provided at the end of the fifth connecting pipe.
  • the working fluid storage tank is provided with a safety valve.
  • the heat pump is arranged above the working fluid storage tank, so that the condensed liquid in the heat pump can automatically flow into the working fluid storage tank; the working fluid pump is arranged below the working fluid storage tank, so as to facilitate the discharge of the liquid in the working fluid storage tank.
  • the gas phase of the process system can be connected to the first connecting pipe, and the control valve on the first connecting pipe is opened, and then the control valve on the second connecting pipe is opened, and the heat pump is turned on to continuously condense the gas in the process system, recover and store it in the working fluid storage tank, so as to facilitate subsequent use.
  • the fourth connecting pipe can be connected to the liquid phase of the process system, and the working fluid pump can be turned on so that the liquid working fluid can be transported to the process system for continued use.
  • the liquid level meter can effectively detect the working fluid level in the working fluid storage tank, so as to timely grasp the working fluid storage amount and working fluid delivery amount of the working fluid storage tank.
  • the vacuum pump or the exhaust device can be connected to the exhaust port of the third connecting pipe, and the control valve on the third connecting pipe can be opened to continuously discharge the non-condensable gas to ensure the smooth operation of each component.
  • the low-boiling-point working fluid recovery and storage and replenishment device provided by the present invention can realize the recovery, replenishment, injection and metering operations of the low-boiling-point working fluid, thereby avoiding a large amount of low-boiling-point working fluid being wasted during maintenance and overhaul.
  • FIG1 is a schematic structural diagram of a low-boiling-point working fluid recovery and storage device provided by the present invention
  • FIG2 is a schematic diagram of the structure of the low-boiling-point working fluid recovery and storage device for recovering and storing the low-boiling-point working fluid in the process system;
  • FIG3 is a schematic diagram of the structure of a low-boiling-point working fluid recovery and storage device for recovering and storing a large amount of low-boiling-point working fluids in a process system;
  • FIG4 is a schematic diagram of the structure of the low-boiling-point working fluid recovery and storage and replenishment device when replenishing the low-boiling-point working fluid of the process system;
  • FIG5 is a schematic diagram of the structure of the low-boiling-point working fluid recovery and storage and replenishment device when injecting low-boiling-point working fluid into the process system.
  • 1 is a working fluid pump
  • 2 is a liquid level gauge
  • 3 is a liquid seal
  • 4 is an interface
  • 41 is a gas phase interface
  • 42 is an exhaust interface
  • 43 is a liquid phase outlet
  • 44 is a liquid phase inlet
  • 5 is a control valve
  • 51 is a process air inlet valve
  • 52 is a process exhaust valve
  • 53 is a heat pump inlet valve
  • 54 is a heat pump outlet valve
  • 55 is a storage tank liquid inlet valve
  • 56 is a storage tank exhaust valve
  • 57 is a storage tank drain valve
  • 58 is a working fluid pump inlet valve
  • 6 is a heat pump
  • 7 is a working fluid storage tank
  • 8 is a tank truck
  • 9 is a safety valve
  • 10 is a process system.
  • the core of the present invention is to provide a low-boiling-point working fluid recovery and storage and replenishment device, which can realize the recovery, replenishment, injection and metering operations of the low-boiling-point working fluid, thereby avoiding a large amount of low-boiling-point working fluid from being wasted during maintenance and overhaul.
  • the present specific embodiment provides a low-boiling-point working fluid recovery and storage and replenishment device, comprising: a heat pump 6, a working fluid storage tank 7, a working fluid pump 1 for driving liquid flow, and a control device, which are arranged in sequence from top to bottom.
  • the inlet side of the heat pump 6 is provided with a first connecting pipe for connecting to the gas phase end of the process system 10, the outlet side of the heat pump 6 is provided with a second connecting pipe for connecting to the liquid inlet end of the working fluid storage tank 7, the gas outlet end of the working fluid storage tank 7 is provided with a third connecting pipe connected to the first connecting pipe, the end of the third connecting pipe is an exhaust port, and the liquid outlet end of the working fluid storage tank 7 is provided with a fourth connecting pipe connected to the liquid phase end of the process system 10; the fourth connecting pipe is provided with the working fluid pump 1, the working fluid storage tank 7 is provided with a liquid level gauge 2 for detecting the liquid level in the tank, and the first connecting pipe, the second connecting pipe, the third connecting pipe and the fourth connecting pipe are all provided with a control valve 5, and the control valve 5 and the liquid level gauge 2 are both connected to the control device.
  • non-condensable gas refers to air, hydrogen, nitrogen and lubricating oil vapor mixed in the refrigeration system. These gases circulate in the system with the refrigerant, but cannot condense with the refrigerant, nor can they produce a refrigeration effect. It is necessary to discharge the non-condensable gas to avoid affecting the normal operation of the device.
  • the liquid level gauge 2 set on the working medium storage tank 7 can measure the inlet and outlet capacity of the liquid working medium in real time and accurately, that is, by reading the reading of the liquid level gauge 2, the working medium discharge capacity of the process system 10 can be measured.
  • an interface 4 can be set at the end of each connecting pipe to connect with the gas phase end or liquid phase end of the process system 10.
  • the shape, structure, type, etc. of the heat pump 6, the working fluid storage tank 7, the working fluid pump 1 and the control device can be determined according to actual conditions and actual needs.
  • the heat pump 6 is arranged above the working fluid storage tank 7, so that the condensed liquid in the heat pump 6 can automatically flow into the working fluid storage tank 7; the working fluid pump 1 is arranged below the working fluid storage tank 7, so as to facilitate the discharge of the liquid in the working fluid storage tank 7.
  • the gas phase of the process system 10 can be connected to the first connecting pipe, and the control valve 5 on the first connecting pipe is opened, and then the control valve 5 on the second connecting pipe is opened, and the heat pump 6 is turned on to continuously condense the gas in the process system 10, and recover and store it in the working fluid storage tank 7, so as to facilitate subsequent use.
  • the fourth connecting pipe can be connected to the liquid phase of the process system 10, and the working fluid pump 1 can be turned on so that the liquid working fluid is transported to the process system 10 for continued use.
  • the liquid level meter 2 can effectively detect the working fluid level in the working fluid storage tank 7, so as to timely grasp the working fluid storage amount and working fluid delivery amount of the working fluid storage tank 7.
  • the vacuum pump or the exhaust device can be connected to the exhaust port of the third connecting pipe, and the control valve 5 on the third connecting pipe can be opened to continuously discharge the non-condensable gas to ensure the smooth operation of each component.
  • the low-boiling-point working fluid recovery and storage and replenishment device provided by the present invention can realize the recovery, replenishment, injection and metering operations of the low-boiling-point working fluid, thereby avoiding a large amount of low-boiling-point working fluid being wasted during maintenance and overhaul.
  • one end of the first connecting pipe is provided with a gas phase interface 41 for connecting with the gas phase end, and the other end extends into the inlet side
  • the control valve 5 provided on the first connecting pipe includes a process air inlet valve 51 provided near the gas phase interface 41 and a heat pump inlet valve 53 provided near the inlet side. Therefore, by opening the process air inlet valve 51, the gaseous working medium in the process system 10 can enter the first connecting pipe, and by opening the heat pump inlet valve 53, the gaseous working medium can enter the heat pump 6.
  • control valve 5 provided on the second connecting pipe includes a heat pump outlet valve 54 provided near the heat pump 6 and a tank inlet valve 55 provided near the working medium tank 7. Therefore, by opening the heat pump outlet valve 54, the liquid working medium in the heat pump 6 can enter the second connecting pipe, and by opening the tank inlet valve 55, the liquid working medium can enter the working medium tank 7.
  • a liquid seal 3 is provided between the heat pump outlet valve 54 and the tank liquid inlet valve 55.
  • the provision of the liquid seal 3 can effectively reduce the possibility of gas being carried by the liquid at the outlet of the heat pump 6.
  • one end of the third connecting pipe is provided with an exhaust interface 42 for connecting to a vacuum pump or an exhaust device, and the other end extends into the gas outlet.
  • the control valve 5 provided on the third connecting pipe includes a storage tank exhaust valve 56 provided near the gas outlet and a process exhaust valve 52 provided near the exhaust interface 42. Therefore, by opening the storage tank exhaust valve 56, the gaseous working medium in the working medium storage tank 7 can enter the third connecting pipe. If the process air inlet valve 51 and the heat pump inlet valve 53 are closed and the process exhaust valve 52 is opened at this time, the gaseous working medium can be directly discharged to the outside. If the process exhaust valve 52 is closed and the process air inlet valve 51 and the heat pump inlet valve 53 are opened at this time, the gaseous working medium can be sent back to the heat pump 6.
  • one end of the fourth connecting pipe is provided with a liquid phase outlet 43 for connecting to the liquid phase end, and the other end extends into the liquid outlet end, and the control valve 5 arranged on the fourth connecting pipe is a tank drain valve 57 arranged close to the working fluid storage tank 7.
  • this device can be used when there is an excess of low-boiling-point working fluid in the process system 10 or the low-boiling-point working fluid needs to be completely discharged to repair the system.
  • This device can also be used to supplement the low-boiling-point working fluid in the process system 10.
  • the gas phase end of the process system 10 can be connected to the gas phase interface 41, and the liquid phase end of the process system 10 can be connected to the liquid phase outlet 43. Then, the process air inlet valve 51, the storage tank exhaust valve 56 and the storage tank drain valve 57 are opened, and then the working fluid pump 1 is turned on to inject the working fluid in the working fluid storage tank 7 into the process system 10.
  • a fifth connecting pipe is provided between the storage tank discharge valve 57 and the working fluid pump 1 , a working fluid pump inlet valve 58 connected to the control device is provided on the fifth connecting pipe, and a liquid phase inlet 44 is provided at the end of the fifth connecting pipe.
  • the device can also realize the injection operation of the low-boiling-point working fluid of the process system 10, that is, the liquid outlet of the tank truck 8 is connected to the liquid phase inlet 44, the process system 10 is connected to the liquid phase outlet 43, the working fluid pump inlet valve 58 is opened, and the working fluid pump 1 is turned on to complete the injection operation of the working fluid.
  • a safety valve 9 is provided on the working fluid storage tank 7 to ensure the safety and reliability of the system.
  • first connecting tube, the second connecting tube, the third connecting tube, the fourth connecting tube and the fifth connecting tube mentioned in the present application document wherein the first and second and the third and the fourth and the fifth are only for distinguishing the different positions, and there is no order of precedence.
  • orientation or position relationship indicated by "upper” and “lower” in the present application is based on the orientation or position relationship shown in the drawings, and is only for the convenience of simplifying the description and facilitating understanding, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.
  • each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments.
  • the same or similar parts between the embodiments can be referred to each other. Any combination of all embodiments provided by the present invention is within the protection scope of this invention and will not be described in detail here.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
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  • General Engineering & Computer Science (AREA)
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Abstract

一种低沸点工质回收及储补装置，包括：由上至下依次设置的热泵、工质储罐、用于驱动液体流动的工质泵以及控制装置，热泵的进口侧设有用于与工艺系统的气相端连接的第一连接管，热泵的出口侧设有用于与工质储罐的进液端连接的第二连接管，工质储罐的出气端设有与第一连接管连通的第三连接管，第三连接管的端部为排气口，工质储罐的出液端设有与工艺系统的液相端连接的第四连接管；第四连接管上设有工质泵，工质储罐设有用于检测罐内液位的液位计，第一连接管、第二连接管、第三连接管以及第四连接管上均设有控制阀，控制阀和液位计均与控制装置连接。本装置可实现低沸点工质的回收、补充、注入以及计量操作。

Description

一种低沸点工质回收及储补装置
本申请要求于2022年11月09日提交中国专利局、申请号为202211402128.1、发明名称为“一种低沸点工质回收及储补装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及设备制造技术领域，更具体地说，涉及一种低沸点工质回收及储补装置。
背景技术
现有技术中，常见的低沸点工质包括R22、R134a、R600a、R717等，大多数低沸点工质具备单位做功能力强、工作压力适中、比容较小、传热性能较好、不易分解等特征，广泛用于制冷、供热、低温发电、余热利用以及强化换热等领域。然而，目前业内缺少对低沸点工质进行回收、储存以及补给的专业化设备，导致大量的低沸点工质在维护、检修过程中被浪费。
综上所述，如何提供一种可实现低沸点工质的回收、补充、注入以及计量的装置，是目前本领域技术人员亟待解决的问题。
发明内容
有鉴于此，本发明的目的是提供一种低沸点工质回收及储补装置，可实现低沸点工质的回收、补充、注入以及计量操作，避免大量的低沸点工质在维护、检修过程中被浪费。
为了实现上述目的，本发明提供如下技术方案：
一种低沸点工质回收及储补装置，包括：由上至下依次设置的热泵、工质储罐、用于驱动液体流动的工质泵以及控制装置，所述热泵的进口侧设有用于与工艺系统的气相端连接的第一连接管，所述热泵的出口侧设有用于与所述工质储罐的进液端连接的第二连接管，所述工质储罐的出气端设有与所述第一连接管连通的第三连接管，所述第三连接管的端部为排气 口，所述工质储罐的出液端设有与所述工艺系统的液相端连接的第四连接管；
所述第四连接管上设有所述工质泵，所述工质储罐设有用于检测罐内液位的液位计，所述第一连接管、所述第二连接管、所述第三连接管以及所述第四连接管上均设有控制阀，所述控制阀和所述液位计均与所述控制装置连接。
优选的，所述第一连接管的一端设有用于与所述气相端连接的气相接口、另一端伸入所述进口侧，设于所述第一连接管上的所述控制阀包括靠近所述气相接口设置的工艺进气阀和靠近所述进口侧设置的热泵进口阀。
优选的，设于所述第二连接管上的所述控制阀包括靠近所述热泵设置的热泵出口阀和靠近所述工质储罐设置的储罐进液阀。
优选的，所述热泵出口阀和所述储罐进液阀之间设有液封件。
优选的，所述第三连接管的一端设有用于与真空泵或排气装置连接的排气接口、另一端伸入所述出气端，设于所述第三连接管上的所述控制阀包括靠近所述出气端设置的储罐排气阀和靠近所述排气接口设置的工艺排气阀。
优选的，所述第四连接管的一端设有用于与所述液相端连接的液相出口、另一端伸入所述出液端，设于所述第四连接管上的所述控制阀为靠近所述工质储罐设置的储罐排液阀。
优选的，所述储罐排液阀和所述工质泵之间设有第五连接管，所述第五连接管上设有与所述控制装置连接的工质泵进口阀，所述第五连接管的端部设有液相进口。
优选的，所述工质储罐上设有安全阀。
在使用本发明所提供的低沸点工质回收及储补装置时，将热泵布置在工质储罐上方，可使热泵中冷凝的液体自动流入工质储罐；将工质泵布置在工质储罐下方，进而便于工质储罐中液体的排出。当工艺系统中工质过量、需要排出一些工质时，可以将工艺系统的气相与第一连接管连接，并打开第一连接管上的控制阀，再打开第二连接管上的控制阀、开启热泵，以将工艺系统中的气体不断冷凝，回收储存在工质储罐中，进而便于后续 使用。
当需要对工艺系统的工质进行补充时，可以将第四连接管和工艺系统的液相连接，并开启工质泵，以使液态工质被输送至工艺系统内继续使用。与此同时，液位计可有效检测工质储罐内的工质液位情况，以便于及时掌握工质储罐的工质储存量和工质输送量。另外，在热泵运行过程中，如果工艺系统中存在不凝性气体，可以将真空泵或排气装置与第三连接管的排气口连接，并打开第三连接管上的控制阀，以将不凝性气体连续排出，确保各部件顺利运行。
综上所述，本发明所提供的低沸点工质回收及储补装置，可实现低沸点工质的回收、补充、注入以及计量操作，避免大量的低沸点工质在维护、检修过程中被浪费。
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，还可以根据提供的附图获得其他的附图。
图1为本发明所提供的低沸点工质回收及储补装置的结构示意图；
图2为低沸点工质回收及储补装置对工艺系统低沸点工质进行回收和存储时的结构示意图；
图3为低沸点工质回收及储补装置对大量的工艺系统低沸点工质进行回收和存储时的结构示意图；
图4为低沸点工质回收及储补装置对工艺系统低沸点工质进行补充时的结构示意图；
图5为低沸点工质回收及储补装置对工艺系统低沸点工质进行注入时的结构示意图。
图1-图5中：
1为工质泵、2为液位计、3为液封件、4为接口、41为气相接口、42为排气接口、43为液相出口、44为液相进口、5为控制阀、51为工艺进气 阀、52为工艺排气阀、53为热泵进口阀、54为热泵出口阀、55为储罐进液阀、56为储罐排气阀、57为储罐排液阀、58为工质泵进口阀、6为热泵、7为工质储罐、8为槽车、9为安全阀、10为工艺系统。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的核心是提供一种低沸点工质回收及储补装置，可实现低沸点工质的回收、补充、注入以及计量操作，避免大量的低沸点工质在维护、检修过程中被浪费。
请参考图1至图5。
本具体实施例提供了一种低沸点工质回收及储补装置，包括：由上至下依次设置的热泵6、工质储罐7、用于驱动液体流动的工质泵1以及控制装置，热泵6的进口侧设有用于与工艺系统10的气相端连接的第一连接管，热泵6的出口侧设有用于与工质储罐7的进液端连接的第二连接管，工质储罐7的出气端设有与第一连接管连通的第三连接管，第三连接管的端部为排气口，工质储罐7的出液端设有与工艺系统10的液相端连接的第四连接管；第四连接管上设有工质泵1，工质储罐7设有用于检测罐内液位的液位计2，第一连接管、第二连接管、第三连接管以及第四连接管上均设有控制阀5，控制阀5和液位计2均与控制装置连接。
需要说明的是，不凝性气体是指混在制冷系统里的空气、氢气、氮气以及润滑油蒸气等，这些气体随着制冷剂在系统中循环，但无法随着制冷剂一起冷凝，也无法产生制冷效应，需要将不凝性气体排出、避免影响装置的正常运行。工质储罐7上设置的液位计2，以实时、准确的计量液体工质的进、出的容量，也即通过读取液位计2的读数，可计量工艺系统10的工质排出容量。另外，可以在各连接管的端部设置接口4，以与工艺系 统10的气相端或液相端连接。
可以在实际运用过程中，根据实际情况和实际需求，对热泵6、工质储罐7、工质泵1以及控制装置的形状、结构、类型等进行确定。
在使用本发明所提供的低沸点工质回收及储补装置时，将热泵6布置在工质储罐7上方，可使热泵6中冷凝的液体自动流入工质储罐7；将工质泵1布置在工质储罐7下方，进而便于工质储罐7中液体的排出。当工艺系统10中工质过量、需要排出一些工质时，可以将工艺系统10的气相与第一连接管连接，并打开第一连接管上的控制阀5，再打开第二连接管上的控制阀5、开启热泵6，以将工艺系统10中的气体不断冷凝，回收储存在工质储罐7中，进而便于后续使用。
当需要对工艺系统10的工质进行补充时，可以将第四连接管和工艺系统10的液相连接，并开启工质泵1，以使液态工质被输送至工艺系统10内继续使用。与此同时，液位计2可有效检测工质储罐7内的工质液位情况，以便于及时掌握工质储罐7的工质储存量和工质输送量。另外，在热泵6运行过程中，如果工艺系统10中存在不凝性气体，可以将真空泵或排气装置与第三连接管的排气口连接，并打开第三连接管上的控制阀5，以将不凝性气体连续排出，确保各部件顺利运行。
综上所述，本发明所提供的低沸点工质回收及储补装置，可实现低沸点工质的回收、补充、注入以及计量操作，避免大量的低沸点工质在维护、检修过程中被浪费。
在上述实施例的基础上，优选的，第一连接管的一端设有用于与气相端连接的气相接口41、另一端伸入进口侧，设于第一连接管上的控制阀5包括靠近气相接口41设置的工艺进气阀51和靠近进口侧设置的热泵进口阀53。因此，通过打开工艺进气阀51，可使得工艺系统10内的气态工质进入第一连接管，再通过打开热泵进口阀53，可使得气态工质进入热泵6内。
优选的，设于第二连接管上的控制阀5包括靠近热泵6设置的热泵出口阀54和靠近工质储罐7设置的储罐进液阀55。因此，通过打开热泵出口阀54，可使得热泵6内的液态工质进入第二连接管，再通过打开储罐进 液阀55，可使得液态工质进入工质储罐7内。
优选的，热泵出口阀54和储罐进液阀55之间设有液封件3，通过设置液封件3可有效降低热泵6出口处液体带气的可能性。
优选的，第三连接管的一端设有用于与真空泵或排气装置连接的排气接口42、另一端伸入出气端，设于第三连接管上的控制阀5包括靠近出气端设置的储罐排气阀56和靠近排气接口42设置的工艺排气阀52。因此，通过打开储罐排气阀56，可使得工质储罐7内的气态工质进入第三连接管，若此时关闭工艺进气阀51和热泵进口阀53、并打开工艺排气阀52，则可直接向外排出气态工质，若此时关闭工艺排气阀52、打开工艺进气阀51和热泵进口阀53，则可将气态工质重新送至热泵6内。
在上述实施例的基础上，优选的，第四连接管的一端设有用于与液相端连接的液相出口43、另一端伸入出液端，设于第四连接管上的控制阀5为靠近工质储罐7设置的储罐排液阀57。
需要说明的是，当工艺系统10中存在低沸点工质过量或需要将低沸点工质完全排出以检修系统时，可以采用本装置。当工艺系统10中低沸点工质量不足时，也可以采用本装置进行补充。使用本装置时，可以将工艺系统10的气相端与气相接口41连接，将工艺系统10的液相端与液相出口43连接，而后，打开工艺进气阀51、储罐排气阀56以及储罐排液阀57，随后开启工质泵1，即可将工质储罐7中的工质注入工艺系统10。
优选的，储罐排液阀57和工质泵1之间设有第五连接管，第五连接管上设有与控制装置连接的工质泵进口阀58，第五连接管的端部设有液相进口44。
需要说明的是，本装置还可实现工艺系统10的低沸点工质的注入操作，也即可将槽车8的液体出口与液相进口44连接、工艺系统10与液相出口43连接，打开工质泵进口阀58、开启工质泵1，即可完成工质的注入操作。
优选的，工质储罐7上设有安全阀9，以保证系统的安全性和可靠性。
需要进行说明的是，本申请文件中提到的第一连接管和第二连接管和第三连接管和第四连接管以及第五连接管，其中，第一和第二和第三和第 四以及第五只是为了区分位置的不同，并没有先后顺序之分。
另外，还需要说明的是，本申请的“上”、“下”等指示的方位或位置关系，是基于附图所示的方位或位置关系，仅是为了便于简化描述和便于理解，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。
本说明书中各个实施例采用递进的方式描述，每个实施例重点说明的都是与其他实施例的不同之处，各个实施例之间相同相似部分互相参见即可。本发明所提供的所有实施例的任意组合方式均在此发明的保护范围内，在此不做赘述。
以上对本发明所提供的低沸点工质回收及储补装置进行了详细介绍。本文中应用了具体个例对本发明的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本发明的方法及其核心思想。应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以对本发明进行若干改进和修饰，这些改进和修饰也落入本发明权利要求的保护范围内。

Claims (8)

  1. 一种低沸点工质回收及储补装置，其特征在于，包括：由上至下依次设置的热泵(6)、工质储罐(7)、用于驱动液体流动的工质泵(1)以及控制装置，所述热泵(6)的进口侧设有用于与工艺系统(10)的气相端连接的第一连接管，所述热泵(6)的出口侧设有用于与所述工质储罐(7)的进液端连接的第二连接管，所述工质储罐(7)的出气端设有与所述第一连接管连通的第三连接管，所述第三连接管的端部为排气口，所述工质储罐(7)的出液端设有与所述工艺系统(10)的液相端连接的第四连接管；
    所述第四连接管上设有所述工质泵(1)，所述工质储罐(7)设有用于检测罐内液位的液位计(2)，所述第一连接管、所述第二连接管、所述第三连接管以及所述第四连接管上均设有控制阀(5)，所述控制阀(5)和所述液位计(2)均与所述控制装置连接。
  2. 根据权利要求1所述的低沸点工质回收及储补装置，其特征在于，所述第一连接管的一端设有用于与所述气相端连接的气相接口(41)、另一端伸入所述进口侧，设于所述第一连接管上的所述控制阀(5)包括靠近所述气相接口(41)设置的工艺进气阀(51)和靠近所述进口侧设置的热泵进口阀(53)。
  3. 根据权利要求1所述的低沸点工质回收及储补装置，其特征在于，设于所述第二连接管上的所述控制阀(5)包括靠近所述热泵(6)设置的热泵出口阀(54)和靠近所述工质储罐(7)设置的储罐进液阀(55)。
  4. 根据权利要求3所述的低沸点工质回收及储补装置，其特征在于，所述热泵出口阀(54)和所述储罐进液阀(55)之间设有液封件(3)。
  5. 根据权利要求1至4任一项所述的低沸点工质回收及储补装置，其特征在于，所述第三连接管的一端设有用于与真空泵或排气装置连接的排气接口(42)、另一端伸入所述出气端，设于所述第三连接管上的所述控制阀(5)包括靠近所述出气端设置的储罐排气阀(56)和靠近所述排气接口(42)设置的工艺排气阀(52)。
  6. 根据权利要求1至4任一项所述的低沸点工质回收及储补装置，其特征在于，所述第四连接管的一端设有用于与所述液相端连接的液相出口 (43)、另一端伸入所述出液端，设于所述第四连接管上的所述控制阀(5)为靠近所述工质储罐(7)设置的储罐排液阀(57)。
  7. 根据权利要求6所述的低沸点工质回收及储补装置，其特征在于，所述储罐排液阀(57)和所述工质泵(1)之间设有第五连接管，所述第五连接管上设有与所述控制装置连接的工质泵进口阀(58)，所述第五连接管的端部设有液相进口(44)。
  8. 根据权利要求1至4任一项所述的低沸点工质回收及储补装置，其特征在于，所述工质储罐(7)上设有安全阀(9)。
PCT/CN2022/139326 2022-11-09 2022-12-15 一种低沸点工质回收及储补装置 WO2024098510A1 (zh)

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