Low-temperature flash steam recycling and liquefying device

Abstract

The utility model relates to the technical field of recycling devices, in particular to a low-temperature flash steam recycling and liquefying device which comprises a supporting plate, a separating frame, a separating box, an inlet pipe, a gas outlet pipe, a liquid outlet pipe and a connecting component. A gas-liquid mixture is separated through the separation box, liquefied flash steam enters the storage box through the liquid outlet pipe, the flash steam enters the connecting component through the gas outlet pipe and is liquefied for the second time to enter the separation box, and the problem that in the using process of an existing device, the flash steam cannot be stored in the storage box due to the fact that the flash steam is liquefied for the second time is solved. The flash steam directly enters the storage tank after being liquefied by the heat exchanger, but the problem that part of the flash steam enters the storage tank due to poor liquefaction exists, so that the recovery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of recovery devices, in particular to a low-temperature flash gas recovery and liquefaction device. Background Art

[0002] As a clean energy, liquefied natural gas (LNG) is gradually being promoted. However, the low-temperature liquefied natural gas stored in the LNG tank will be gasified by the heat transfer of the ambient temperature. In addition, a large amount of gas will be generated during the filling process of the LNG tank, which is called flash gas.

[0003] The existing announcement number CN211649789U is a liquefied natural gas flash steam recovery device, which includes a device body, a controller, a top cover and a connecting pipe. The top of the device body is fixedly connected to the top cover, the top of the top cover is embedded and connected to the connecting pipe, the top of the connecting pipe is nested and connected to the gas pipeline, the middle part of the gas pipeline is fixedly connected to a heat exchanger, and the other side of the device body is fixedly connected to a storage tank. The storage tank improves the recovery and utilization effect of the flash steam, so that the gas in the device body will not be wasted and lost, which greatly improves the recovery effect of the device.

[0004] In the above method, during use, the flash steam is liquefied through the heat exchanger and directly enters the storage tank. However, part of the flash steam enters the storage tank due to poor liquefaction, thereby affecting its recovery effect. Utility Model Content

[0005] The utility model aims to provide a low-temperature flash steam recovery and liquefaction device, which solves the problem that in the existing device, during use, the flash steam directly enters the storage tank after being liquefied by the heat exchanger, but part of the flash steam enters the storage tank due to poor liquefaction, thereby affecting its recovery effect.

[0006] To achieve the above-mentioned purpose, the utility model provides a low-temperature flash gas recovery liquefaction device, including a workbench, a main body and a storage tank, wherein the main body is installed on the left side of the workbench, and the storage tank is installed on the right side of the workbench.

[0007] Among them, it also includes a separation component, which includes a support plate, a separation frame, a separation box, an inlet pipe, an air outlet pipe, a liquid outlet pipe and a connecting member; the support plate is fixedly installed on the workbench and is located between the storage tank and the main body, the separation frame is fixedly installed on the support plate, the separation box is fixedly installed on the separation frame, the inlet pipe connects the main body and the separation box through the connecting member, the liquid outlet pipe connects the main body and the storage tank, the air outlet pipe is arranged on the separation box, and the connecting member is installed on the separation frame.

[0008] Wherein, the connecting component includes a connecting pipe, a control valve and a heat exchange component, the connecting pipe connects the main body and the heat exchange component, the control valve is installed on the connecting pipe, and the heat exchange component is arranged in the separation frame.

[0009] Wherein, the heat exchange component includes a heat exchanger, a heat exchange tube and a liquefaction element. The heat exchanger is arranged in the separation frame through the liquefaction element. The heat exchange tube is fixedly installed on the heat exchanger, and the liquefaction element is arranged in the separation frame.

[0010] Wherein, the liquefaction element includes a protective plate, a liquefaction tank and a fixed plate, the fixed plate is fixedly installed in the separation frame and located above the separation box, the liquefaction tank is fixedly installed on the fixed plate, and the protective plate is installed on the outside of the liquefaction tank.

[0011] Wherein, the separation assembly also includes a moving part, which includes a U-shaped frame, a sliding shaft and a pulley. The U-shaped frame is rotatably installed on the lower end surface of the workbench, the sliding shaft is fixedly installed in the U-shaped frame, and the pulley is rotatably connected to the sliding shaft.

[0012] The utility model discloses a low-temperature flash steam recovery and liquefaction device, wherein the flash steam in the main body enters into the liquefaction tank through the connecting pipe, and by starting the heat exchanger, the heat exchanger works to cool and liquefy the flash steam in the liquefaction tank through the heat exchange pipe, and the liquefied gas-liquid mixture enters into the separation box through the inlet pipe, and the gas-liquid mixture is separated by the separation box, and the liquefied flash steam enters into the storage box through the liquid outlet pipe, and the flash steam enters into the connecting member through the gas outlet pipe, and enters into the separation box for secondary liquefaction, thereby solving the problem that in the existing device, the flash steam directly enters into the storage tank after being liquefied by the heat exchanger during use, but part of the flash steam enters into the storage tank due to poor liquefaction, thereby improving the recovery efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a structural schematic diagram of a low-temperature flash vapor recovery liquefaction device according to the first embodiment of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the separation components of the low-temperature flash vapor recovery liquefaction device of the first embodiment of the utility model.

[0016] Figure 3 It is a structural schematic diagram of a low-temperature flash vapor recovery liquefaction device according to a second embodiment of the utility model.

[0017] In the figure: 101-workbench, 102-main body, 103-storage tank, 104-support plate, 105-separation frame, 106-separation box, 107-inlet pipe, 108-air outlet pipe, 109-liquid outlet pipe, 110-connecting pipe, 111-control valve, 112-heat exchanger, 113-heat exchange tube, 114-protective plate, 115-liquefaction tank, 116-fixed plate, 201-U-shaped frame, 202-slide shaft, 203-pulley. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0019] The first embodiment of the present application is:

[0020] See also Figure 1 and Figure 2 , Figure 1 This is a schematic structural diagram of a low-temperature flash vapor recovery liquefaction device according to a first embodiment of the utility model. Figure 2 It is a structural schematic diagram of the separation components of the low-temperature flash vapor recovery liquefaction device of the first embodiment of the utility model.

[0021] The present embodiment provides a low-temperature flash vapor recovery and liquefaction device, including a workbench 101, a main body 102, a storage tank 103 and a separation component, wherein the separation component includes a support plate 104, a separation frame 105, a separation box 106, an inlet pipe 107, an air outlet pipe 108, a liquid outlet pipe 109 and a connecting member; the connecting member includes a connecting pipe 110, a control valve 111 and a heat exchange component, wherein the heat exchange component includes a heat exchanger 112, a heat exchange pipe 113 and a liquefaction element, wherein the liquefaction element includes a protective plate 114, a liquefaction tank 115 and a fixing plate 116. The above-mentioned solution solves the problem that during use of the existing device, the flash steam directly enters the storage tank 103 after being liquefied by the heat exchanger 112, but part of the flash steam enters the storage tank 103 due to poor liquefaction, thereby affecting its recovery effect. It can be understood that the above-mentioned solution can be used in the prospect of the low-temperature flash vapor recovery and liquefaction device, and can also be used to solve the mobility problem.

[0022] In this embodiment, the main body 102 is installed on the left side of the workbench 101 , and the storage tank 103 is installed on the right side of the workbench 101 , and the gas-liquid separation is performed through the separation box 106 .

[0023] The support plate 104 is fixedly mounted on the workbench 101 and is located between the storage tank 103 and the main body 102. The separation frame 105 is fixedly mounted on the support plate 104. The separation box 106 is fixedly mounted in the separation frame 105. The inlet pipe 107 is connected to the main body 102 and the separation box 106 through the connecting member. The liquid outlet pipe 109 is connected to the main body 102 and the storage tank 103. The air outlet pipe 108 is arranged on the separation box 106. The connecting member is mounted on the separation frame 105. The inlet pipe 107, the liquid outlet pipe 109, and the air outlet pipe 108 are all provided on the separation box 106. A valve is provided, and the pipe cools down and liquefies the flash steam through the connecting component. The liquefied gas-liquid mixture enters the separation box 106 through the inlet pipe 107, and the gas-liquid mixture is separated by the separation box 106. The liquefied flash steam enters the storage box through the liquid outlet pipe 109, and the flash steam enters the connecting component through the gas outlet pipe 108 for secondary liquefaction and enters the separation box 106. This solves the problem that during the use of the existing device, the flash steam directly enters the storage tank 103 after being liquefied by the heat exchanger 112, but some flash steam enters the storage tank 103 due to poor liquefaction, thereby improving the recovery efficiency.

[0024] Secondly, the connecting pipe 110 connects the main body 102 and the heat exchange component, the control valve 111 is installed on the connecting pipe 110, the heat exchange component is arranged in the separation frame 105, the flash gas in the main body 102 enters the heat exchange component through the connecting pipe 110, and the control valve 111 controls the flow.

[0025] Again, the heat exchanger 112 is arranged in the separation frame 105 through the liquefaction element, the heat exchange tube 113 is fixedly installed on the heat exchanger 112, and the liquefaction element is arranged in the separation frame 105. By starting the heat exchanger 112, the heat exchanger 112 works to cool down and liquefy the flash steam in the liquefaction element through the heat exchange tube 113.

[0026] At the same time, the fixed plate 116 is fixedly installed in the separation frame 105 and is located above the separation box 106. The liquefaction tank 115 is fixedly installed on the fixed plate 116. The protective plate 114 is installed on the outside of the liquefaction tank 115. The heat exchange tube 113 is partially located in the liquefaction tank 115. The protective plate 114 provides protection for the liquefaction tank 115. The fixed plate 116 plays a fixing role. The flash steam is liquefied through the cooperation of the liquefaction tank 115 and the heat exchange tube 113.

[0027] When using the low-temperature flash steam recovery and liquefaction device of this embodiment, the flash steam in the main body 102 enters the liquefaction tank 115 through the connecting pipe 110, and by starting the heat exchanger 112, the heat exchanger 112 works to cool and liquefy the flash steam in the liquefaction tank 115 through the heat exchange pipe 113, and the liquefied gas-liquid mixture enters the separation box 106 through the inlet pipe 107, and the gas-liquid mixture is separated by the separation box 106, and the liquefied flash steam enters the storage box through the liquid outlet pipe 109, and the flash steam enters the connecting member through the gas outlet pipe 108, and enters the separation box 106 for secondary liquefaction, thereby solving the problem that in the existing device, the flash steam directly enters the storage tank 103 after being liquefied through the heat exchanger 112 during use, but some flash steam enters the storage tank 103 due to poor liquefaction, thereby improving the recovery efficiency.

[0028] The second embodiment of the present application is:

[0029] See also Figure 3 , Figure 3 It is a structural schematic diagram of a low-temperature flash vapor recovery liquefaction device according to a second embodiment of the utility model.

[0030] On the basis of the first embodiment, the separation assembly of this embodiment further includes a moving component, and the moving component includes a U-shaped frame 201 , a sliding shaft 202 and a pulley 203 .

[0031] Among them, the U-shaped frame 201 is rotatably installed on the lower end surface of the workbench 101, the slide shaft 202 is fixedly installed in the U-shaped frame 201, the pulley 203 is rotatably connected with the slide shaft 202, the pulley 203 is partially located in the U-shaped frame 201, and the pulley 203 has a brake. The rotation of the pulley 203 drives the U-shaped frame 201 to move, and the movement of the U-shaped frame 201 drives the workbench 101 to move, thereby facilitating the movement of the entire device.

[0032] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A low-temperature flash gas recovery liquefaction device, comprising a workbench, a main body and a storage tank, wherein the main body is installed on the left side of the workbench, and the storage tank is installed on the right side of the workbench, characterized in that: Also included are separation components; The separation assembly includes a support plate, a separation frame, a separation box, an inlet pipe, an air outlet pipe, a liquid outlet pipe and a connecting member; the support plate is fixedly mounted on the workbench and is located between the storage tank and the main body, the separation frame is fixedly mounted on the support plate, the separation box is fixedly mounted on the separation frame, the inlet pipe connects the main body and the separation box through the connecting member, the liquid outlet pipe connects the main body and the storage tank, the air outlet pipe is arranged on the separation box, and the connecting member is mounted on the separation frame.

2. The low-temperature flash gas recovery liquefaction device according to claim 1, characterized in that: The connecting member comprises a connecting pipe, a control valve and a heat exchange component. The connecting pipe communicates the main body with the heat exchange component. The control valve is installed on the connecting pipe. The heat exchange component is arranged in the separation frame.

3. The low-temperature flash gas recovery liquefaction device according to claim 2, characterized in that: The heat exchange component includes a heat exchanger, a heat exchange tube and a liquefaction element. The heat exchanger is arranged in the separation frame through the liquefaction element. The heat exchange tube is fixedly installed on the heat exchanger, and the liquefaction element is arranged in the separation frame.

4. The low-temperature flash gas recovery liquefaction device according to claim 3, characterized in that: The liquefaction element comprises a protective plate, a liquefaction tank and a fixed plate, wherein the fixed plate is fixedly mounted in the separation frame and is located above the separation box, the liquefaction tank is fixedly mounted on the fixed plate, and the protective plate is mounted on the outside of the liquefaction tank.

5. The low-temperature flash gas recovery liquefaction device according to claim 1, characterized in that: The separation assembly also includes a moving part, which includes a U-shaped frame, a sliding shaft and a pulley. The U-shaped frame is rotatably mounted on the lower end surface of the workbench, the sliding shaft is fixedly mounted in the U-shaped frame, and the pulley is rotatably connected to the sliding shaft.

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