CN220583162U - Alkali metal heat pipe filling device - Google Patents

Abstract

The utility model provides an alkali metal heat pipe filling device, which comprises a glove box, wherein alkali metal to be filled is placed in the glove box, the alkali metal heat pipe filling device comprises the glove box and a first pipeline, the alkali metal to be filled is placed in the glove box, a connecting pipe is arranged on the side wall of the glove box, the other end of the connecting pipe is connected with a heatable working medium storage tank, and a discharge port of the working medium storage tank is used for communicating a heat pipe; and two ends of the first pipeline are respectively communicated with an inert gas source and the glove box. The heat pipe in the alkali metal heat pipe filling device is arranged on the side surface of the glove box, so that the operation is convenient; the working medium storage tank is convenient to detach and clean so as to remove impurities generated after multiple filling, and the working medium storage tank is easy to maintain.

Description

Alkali metal heat pipe filling device

Technical Field

The utility model relates to an alkali metal heat pipe filling device.

Background

The heat pipe is an passive heat exchange element which realizes heat transfer by means of internal working medium phase change and continuous circulation. Because a large amount of heat is transmitted to the outside of the body through a small cross-sectional area in a long distance without external power, the heat conduction capacity of the heat-conducting material is better than that of any one of known metals, and the heat-conducting material is commonly known as a heat-conducting superconductor. The heat pipe has the advantages of high heat transfer efficiency, reversible heat flow direction, compact structure, effective isolation of secondary side fluid and the like. In recent years, the application of heat pipe technology to new stack designs has become a major research trend, such as Kilopower space stacks, spark/lunar exploration reactor HOMERs, and the like. In addition, the method has wide application in the fields of thermal engineering, waste heat recovery, solar energy utilization and the like.

In the prior art, a typical filling process is two types of direct solid filling and liquid filling, for example, chinese patent publication No. CN 104075600A discloses a solid working medium filling device of a double-process interface heat pipe, a working medium tank and a heat pipe to be filled are arranged at the bottom of a glove box, the working medium in the glove box is placed in the working medium tank to be melted and then is filled in the heat pipe, however, the heat pipe to be filled is connected to the lower part of the glove box, the operation is inconvenient, and the working medium tank extends into the glove box and is tightly matched with the glove box through a cooling ring, so that the working medium tank is not easy to detach for cleaning.

Disclosure of Invention

The utility model aims to overcome the defects of inconvenient operation and difficult maintenance of an alkali metal heat pipe filling device in the prior art and provides the alkali metal heat pipe filling device.

The utility model solves the technical problems by the following technical scheme:

the utility model provides an alkali metal heat pipe filling device, which comprises a glove box, wherein alkali metal to be filled is placed in the glove box, a connecting pipe is arranged on the side wall of the glove box, the other end of the connecting pipe is connected with a heatable working medium storage tank, and a discharge port of the working medium storage tank is used for communicating a heat pipe;

the alkali metal heat pipe filling device further comprises a first pipeline, and two ends of the first pipeline are respectively communicated with an inert gas source and the glove box.

In the scheme, the heat pipe to be filled is arranged on the side face of the glove box in the structural mode, so that the heat pipe can be better arranged by utilizing the side space of the glove box, the longer heat pipe filling requirement can be met, the heat pipe can be vertically or obliquely placed, the space is not influenced, and the heat pipe can be suitable for liquid filling of conventional heat pipes, special-shaped heat pipes and longer heat pipes; in addition, the heat pipes are arranged on the side surfaces of the glove box for filling, so that an operator can conveniently take down the filled heat pipes, and the operation is convenient; and the working medium storage tank is connected to the connecting pipe outside the glove box, so that the working medium storage tank is convenient to detach and clean to remove impurities generated after multiple filling, and the maintenance is easy.

Preferably, the alkali metal heat pipe filling device further comprises a second pipeline, one end of the second pipeline is connected with the heat pipe, and the other end of the second pipeline is connected with a first vacuum device.

In the scheme, the structure is adopted, the heat pipe is vacuumized after filling and before welding and sealing through the first vacuum device, the requirement on vacuum degree in the heat pipe filling process is met, and the purity of the alkali metal working medium is further improved.

Preferably, a first valve is installed on the connecting pipe, the first valve has a first state and a second state, and the first valve is configured to disconnect the glove box from the working medium storage tank when in the first state; when in the second state, the glove box is communicated with the working medium storage tank;

and a second valve is arranged at the discharge hole of the working medium storage tank and used for controlling the on-off state between the working medium storage tank and the heat pipe.

In the scheme, the system structure is simplified by controlling the states of the first valve and the second valve, controlling the on-off between the glove box and the working medium storage tank and controlling the on-off between the working medium storage tank and the heat pipe, and facilitating the filling and vacuumizing operation.

Preferably, the alkali metal heat pipe filling device further comprises a third pipeline communicated with the working medium storage tank, and the third pipeline is used for introducing inert gas.

In the scheme, the structure is adopted, the inert gas pressure and the gravity of the alkali metal are utilized to charge the alkali metal working medium into the heat pipe, so that the residue of the alkali metal working medium in the working medium storage tank is avoided, and the loss of the alkali metal working medium in the charging process is further reduced.

Preferably, the first valve is provided with a first connecting port, a second connecting port and a third connecting port which can be mutually communicated, the connecting pipe is connected to the first connecting port, the feeding port of the working medium storage tank is connected to the second connecting port, and the third pipeline is connected to the third connecting port.

In this scheme, adopt above-mentioned structural style, third pipeline lug connection is in order to let in inert gas to working medium storage jar in first valve, need not to reserve the connector in order to connect the third pipeline on the working medium storage jar additionally, has improved space layout rationality, compact structure.

Preferably, when the first valve is configured to be in the first state, neither the first connection port nor the third connection port is in communication with the second connection port;

the first valve is configured such that when in the second state, the first connection port and the second connection port are in communication, neither the first connection port nor the second connection port is in communication with the third connection port;

the first valve further has a third state, and when the first valve is configured in the third state, the second connection port and the third connection port are communicated, and neither the second connection port nor the third connection port is communicated with the first connection port.

In the scheme, the structure is adopted, the on-off relation among the glove box, the working medium storage tank and the third pipeline is controlled by controlling the state of the first valve, the system structure is simplified, and the operation is convenient.

Preferably, a fourth pipeline is communicated between the second pipeline and the third pipeline, a third valve is arranged on the fourth pipeline, and the third valve is used for controlling the on-off of the fourth pipeline.

In the scheme, the inert gas in the third pipeline can also be introduced into the second pipeline through the fourth pipeline and enter the heat pipe to purge the heat pipe, so that the alkali metal working medium flows downwards, and the alkali metal working medium is prevented from blocking the feed inlet of the heat pipe.

Preferably, a fourth valve is arranged on the second pipeline and is used for controlling the on-off of the second pipeline;

and/or a fifth valve is arranged on the third pipeline and is used for controlling the on-off of the third pipeline.

In the scheme, the structure is adopted, the on-off of the second pipeline is controlled through the fourth valve, the situation that the first vacuum device is started by false touch to vacuumize the heat pipe is avoided, and the reliability of the system is improved. The on-off of the third pipeline is controlled through the fifth valve so as to control whether inert gas is introduced into the working medium storage tank and the heat pipe, and the operation is convenient.

Preferably, a cold trap is arranged on the second pipeline, and liquid nitrogen is filled in the cold trap.

In this scheme, adopt above-mentioned structural style, first vacuum apparatus carries out the evacuation in-process to the heat pipe, and liquid nitrogen can intercept kerosene and sodium vapor, avoids getting into first vacuum apparatus, and then reduces the damage that first vacuum apparatus received, improves its life.

Preferably, the alkali metal heat pipe filling device further comprises a transition cabin, wherein the transition cabin is communicated with the glove box and is used for placing a heat pipe.

In the scheme, by adopting the structure, the heat pipe can be directly taken from the transition cabin to the glove box from the glove box operation, and the alkali metal working medium is put into the heat pipe to be directly filled in a solid state, so that the operation is convenient.

Preferably, the alkali metal heat pipe filling device further comprises a second vacuum device, and a pipeline of the second vacuum device stretches into the glove box.

In the scheme, the structure is adopted, the second vacuum device is used for vacuumizing the heat pipe after filling and before welding and sealing, so that the requirement on vacuum degree in the process of filling the heat pipe is met, and the purity of the alkali metal working medium is further improved; and the filling and vacuumizing of the heat pipe are carried out in the glove box, so that the heat pipe filled with alkali metal and before unsealing is not required to be transferred to a vacuum cavity, and the risk caused by gas entering the heat pipe in the transfer process is reduced.

Preferably, a weighing balance is arranged in the glove box, and the weighing balance is used for weighing the alkali metal;

and/or a bracket is arranged at the bottom of the glove box.

In the scheme, the structural form is adopted, so that the accuracy of the alkali metal working mass placed in the heat pipe is improved; the support provides a placing space for the glove box, and the height of the glove box is increased, so that the longer heat pipe filling requirement can be further met.

The utility model has the positive progress effects that:

the heat pipe to be filled in the alkali metal heat pipe filling device is arranged on the side face of the glove box, so that the heat pipe can be well arranged by utilizing the side space of the glove box, the longer heat pipe filling requirement can be met, the heat pipe can be vertically or obliquely arranged, the space influence is avoided, and the heat pipe filling device can be suitable for liquid filling of conventional heat pipes, special-shaped heat pipes and longer heat pipes; in addition, the heat pipes are arranged on the side surfaces of the glove box for filling, so that an operator can conveniently take down the filled heat pipes, and the operation is convenient; and the working medium storage tank is connected to the connecting pipe outside the glove box, so that the working medium storage tank is convenient to detach and clean to remove impurities generated after multiple filling, and the maintenance is easy.

Drawings

FIG. 1 is a schematic diagram of an alkali metal heat pipe filling apparatus according to a preferred embodiment of the present utility model.

Fig. 2 is a schematic structural view of the first valve in the first state according to the preferred embodiment of the present utility model.

Fig. 3 is a schematic structural view of the first valve in the second state according to the preferred embodiment of the present utility model.

Fig. 4 is a schematic structural view of the first valve in the third state according to the preferred embodiment of the present utility model.

Fig. 5 is a schematic structural diagram of a solid state heat pipe according to a preferred embodiment of the present utility model.

FIG. 6 is a schematic diagram of another embodiment of a solid state heat pipe according to the present utility model.

Fig. 7 is a schematic structural view of a liquid filling heat pipe according to a preferred embodiment of the utility model.

FIG. 8 is a schematic view of another embodiment of a liquid filled heat pipe according to the present utility model.

Reference numerals illustrate:

glove box 1

First pipeline 11

Inert gas source 12

Connecting pipe 2

First valve 21

First connection port 211

Second connection port 212

Third connection port 213

Working medium storage tank 3

Heat pipe 4

Second pipeline 5

First vacuum device 51

Fourth valve 52

Cold trap 53

Second valve 6

Third pipeline 7

Fifth valve 71

Fourth pipeline 8

Third valve 81

Transition cabin 9

Second vacuum apparatus 10

Weighing balance 101

Bracket 102

Control cabinet 103

Welding device 104

First tube housing 105

First end cap 106

Second tube shell 107

Head end cap 108

Liquid filling pipe 1081

Tail end cap 109

Detailed Description

The present utility model will be more fully described by way of examples below with reference to the accompanying drawings, which, however, are not intended to limit the scope of the utility model.

Example 1

As will be understood with reference to fig. 1 to 4, the embodiment of the present utility model provides an alkali metal heat pipe filling device, which includes a glove box 1 and a first pipeline 11, wherein alkali metal working media, such as potassium, cesium, sodium, lithium, etc., to be filled are placed in the glove box 1, a connecting pipe 2 is disposed on a side wall of the glove box 1, the connecting pipe 2 may be made of stainless steel, a heatable working medium storage tank 3 is connected to the other end of the connecting pipe 2, that is, two ends of the connecting pipe 2 are respectively connected to the glove box 1 and the working medium storage tank 3, and a discharge port of the working medium storage tank 3 is used for communicating with the heat pipe 4. Specifically, a first connector is formed on the side wall of the glove box 1, one end of the connecting pipe 2 is connected to the first connector, and the other end of the connecting pipe 2 is in flange connection with the first valve 21. The two ends of the first pipeline 11 are respectively communicated with an inert gas source 12 and the glove box 1, and the inert gas source 12 is used for introducing inert gas into the glove box 1 through the first pipeline 11 so as to maintain the inert gas atmosphere in the glove box 1.

In this embodiment, the alkali metal working substance is put into the working substance storage tank 3 through the connecting pipe 2 located at the side of the glove box 1 by means of pliers, tweezers or the like, and the working substance storage tank 3 heats the alkali metal working substance, so that the alkali metal working substance melts and maintains a flowing state to flow into the heat pipe 4 for liquid filling. Meanwhile, in this embodiment, the heat pipe 4 itself can also be heated to avoid solidification of alkali metal. The heat pipe 4 to be filled is arranged on the side surface of the glove box 1, so that the heat pipe 4 can be well arranged by utilizing the side space of the glove box 1, the longer heat pipe filling requirement can be met, the heat pipe 4 can be vertically or obliquely arranged and is not affected by space, and the heat pipe is applicable to conventional heat pipes, special-shaped heat pipes and longer heat pipes (more than 1 m) liquid filling; in addition, the heat pipe 4 is arranged on the side surface of the glove box 1 for filling, so that an operator can conveniently take down the filled heat pipe 4, and the operation is convenient; and the working medium storage tank 3 is connected with the connecting pipe 2 outside the glove box 1, so that the working medium storage tank 3 is conveniently detached for cleaning so as to remove impurities generated after multiple filling, and the maintenance is easy.

As shown in fig. 1, the alkali metal heat pipe filling device further includes a second pipeline 5, one end of the second pipeline 5 is connected to the heat pipe 4, and the other end of the second pipeline 5 is provided with a first vacuum device 51 to vacuumize the heat pipe 4 filled with the alkali metal working medium, and specifically, the first vacuum device 51 may adopt a vacuum pump. The first vacuum device 51 is used for vacuumizing the heat pipe 4 after filling and before welding and sealing, so that the requirement on the vacuum degree in the process of filling the heat pipe is met, and the purity of the alkali metal working medium is improved.

In the present embodiment, as will be understood with reference to fig. 1 to 4, the first valve 21 is mounted on the connection pipe 2, the first valve 21 has a first state and a second state, and when the first valve 21 is configured to be in the first state, the glove box 1 is disconnected from the working medium storage tank 3; in the second state, the glove box 1 is communicated with the working medium storage tank 3. A second valve 6 is arranged at the discharge port of the working medium storage tank 3, and the second valve 6 is used for controlling the on-off between the working medium storage tank 3 and the heat pipe 4.

In this embodiment, the first valve 21 is controlled to be in the second state, the second valve 6 is opened to perform liquid filling, after the alkali metal filling is completed, the second valve 6 is closed, the communication between the working medium storage tank 3 and the heat pipe 4 is cut off, and the first vacuum device 51 is started to vacuumize the heat pipe 4 so as to perform welding sealing operation on the heat pipe 4 in the next step. The on-off between the glove box 1 and the working medium storage tank 3 and the on-off between the working medium storage tank 3 and the heat pipe 4 are controlled by controlling the states of the first valve 21 and the second valve 6, so that the system structure is simplified, and the filling and vacuumizing operation is facilitated.

Specifically, the glove box 1 can adopt a conventional glove box size, and the length and width of the box body are 1200mm x 750mm x 900mm. The glove box 1 is internally provided with an alkali metal storage tank, kerosene or liquid paraffin is filled in the alkali metal storage tank, for example, metal lithium is required to be stored in the liquid paraffin, metal sodium can be stored in the kerosene, and a storage medium of the alkali metal can be selected according to actual requirements. An alkali metal placing part is additionally arranged in the glove box 1, and a small amount of alkali metal working medium can be taken out of the alkali metal storage tank and placed in the alkali metal placing part to absorb a part of water and oxygen. The cylinder area of the working medium storage tank 3 has the size phi of 100mm, the height of 150mm and the wall thickness of 5mm, and in order to avoid alkali metal working medium residue, the bottom of the working medium storage tank 3 adopts a funnel-shaped tank bottom, and taking sodium as an example, the larger filling void ratio of sodium blocks is considered, and the working medium capable of containing sodium is about 600g.

More specifically, the heat pipe 4 is used for liquid filling, the length of the heat pipe 4 can be 2m, the wall thickness is 3mm, a double-layer wire mesh is arranged inside, and the filling rate is about 25% when 170g of sodium is to be filled. As will be understood from fig. 7 and 8, the heat pipe 4 filled with liquid includes a second pipe shell 107, a head end cap 108 and a tail end cap 109, the tail end cap 109 is welded and sealed with the lower end of the second pipe shell 107, the head end cap 108 is welded and sealed with the upper end of the second pipe shell 107, and a liquid filling pipe 1081 communicating with the interior of the second pipe shell 107 is disposed at one end of the head end cap 108 away from the second pipe shell 107, wherein the diameter of the heat pipe 4 can be set to 32mm, and the diameter of the liquid filling pipe 1081mm can be set to 6mm. A heat pipe connecting pipe is arranged at the discharge port of the working medium storage tank 3, the other end of the heat pipe connecting pipe is connected with a liquid filling pipe 1081 of the heat pipe 4, and a second valve 6 is arranged on the heat pipe connecting pipe. When the heat pipe 4 needs to be sealed, the liquid filling pipe 1081 can be clamped and broken by adopting a cold welding clamp, so that the separation of the heat pipe 4 and the filling device is realized, and then the cutting-off part of the liquid filling pipe 1081 is welded and sealed by adopting a welding device. In addition, the heat tracing band and the heat insulation cotton are wound on the outer sides of the working medium storage tank 3 and the heat pipe connecting pipe so that the alkali metal working medium is kept in a flowing state. The outside of the heat pipe 4 is wound with a heating wire, and is provided with a split type temperature control furnace for heating and preserving heat of alkali metal working medium, so that alkali metal solidification is avoided, the heating temperature of the temperature control furnace is higher than the melting point of the alkali metal working medium, sodium is taken as an example, the melting point of sodium is 97 ℃, and the working medium storage tank 3 and the temperature control furnace can be heated to 120 ℃.

In this embodiment, as shown in fig. 1, the alkali metal heat pipe filling device further includes a third pipeline 7 that is communicated with the working medium storage tank 3, where the third pipeline 7 is used for introducing inert gas, and the alkali metal working medium is filled into the heat pipe 4 by using the pressure of the inert gas and the gravity of the alkali metal, so as to avoid the residue of the alkali metal working medium in the working medium storage tank 3, and further reduce the loss of the alkali metal working medium in the filling process.

In this embodiment, as shown in fig. 1, the first valve 21 has a first connection port 211, a second connection port 212, and a third connection port 213 that can communicate with each other, the connection pipe 2 is connected to the first connection port 211, the feed port of the working fluid storage tank 3 is connected to the second connection port 212, and the third pipe 7 is connected to the third connection port 213. The third pipeline 7 is directly connected to the first valve 21 to introduce inert gas into the working medium storage tank 3, and a connecting port is not required to be additionally reserved on the working medium storage tank 3 to be connected with the third pipeline 7, so that the rationality of space layout is improved, and the structure is compact.

In the present embodiment, when the first valve 21 is configured to be in the first state (as shown in fig. 2), neither the first connection port 211 nor the third connection port 213 communicates with the second connection port 212; when the first valve 21 is configured to be in the second state (as shown in fig. 3), the first connection port 211 and the second connection port 212 are in communication, and neither the first connection port 211 nor the second connection port 212 is in communication with the third connection port 213; the first valve 21 further has a third state, and when the first valve 21 is configured in the third state (as shown in fig. 4), the second connection port 212 and the third connection port 213 communicate, and neither the second connection port 212 nor the third connection port 213 communicates with the first connection port 211. In other words, when the first valve 21 is in the first state, the glove box 1 is disconnected from the working medium storage tank 3 and the third pipeline 7, so that the operation in the glove box 1 is prevented from affecting the circulation of the fluid in the working medium storage tank 3 and the third pipeline 7, and the inert gas in the third pipeline 7 is prevented from being introduced into the glove box 1; when the first valve 21 is in the second state, the glove box 1 is communicated with the working medium storage tank 3 and disconnected with the third pipeline 7, so that alkali metal working medium can conveniently enter the heat pipe 4 through the first valve 21, the working medium storage pipe 3 is disconnected with the third pipeline 7, and the situation that the inert gas in the third pipeline 7 blows to the heat pipe 4 when the alkali metal working medium is not completely melted in the working medium storage tank 3, and then a discharge hole of the working medium storage tank 3 is blocked is avoided; when the first valve 21 is in the third state, the glove box 1 is disconnected from the working medium storage tank 3, the working medium storage tank 3 is communicated with the third pipeline 7, and the third pipeline 7 is disconnected from the glove box 1, so that inert gas in the third pipeline 7 can be introduced into the working medium storage tank 3 for purging. By controlling the state of the first valve 21, the on-off relationship among the glove box 1, the working medium storage tank 3 and the third pipeline 7 is controlled, the system structure is simplified, and the operation is convenient.

Specifically, the first valve 21 may be a vertical three-way single-L ball valve. In this embodiment, the ball valve through hole diameter is 32mm.

In this embodiment, as shown in fig. 1, a fourth pipeline 8 is communicated between the second pipeline 5 and the third pipeline 7, and a third valve 81 is disposed on the fourth pipeline 8, where the third valve 81 is used to control on-off of the fourth pipeline 8. Inert gas in the third pipeline 7 can also be introduced into the second pipeline 5 through the fourth pipeline 8 and enter the heat pipe 4 to purge the heat pipe 4, so that the alkali metal working medium flows downwards, and the alkali metal working medium is prevented from blocking a feed inlet of the heat pipe 4.

In some embodiments, as shown in fig. 1, a fourth valve 52 is disposed on the second pipeline 5, and the fourth valve 52 is used to control the on-off of the second pipeline 5. The fourth valve 52 controls the on-off of the second pipeline 5, so that the situation that the first vacuum device 51 is started by false touch to vacuumize the heat pipe 4 is avoided, and the reliability of the system is improved. The third pipeline 7 is provided with a fifth valve 71, and the fifth valve 71 is used for controlling the on-off of the third pipeline 7. The on-off of the third pipeline 7 is controlled through the fifth valve 71 to control whether inert gas is introduced into the working medium storage tank 3 and the heat pipe 4, so that the operation is convenient.

In this embodiment, as shown in fig. 1, a cold trap 53 is provided on the second pipeline 5, and liquid nitrogen is filled in the cold trap 53. In the process of vacuumizing the heat pipe 4 by the first vacuum device 51, liquid nitrogen can intercept kerosene and sodium vapor, so that the liquid nitrogen is prevented from entering the first vacuum device 51, the damage to the first vacuum device 5 is reduced, and the service life of the first vacuum device is prolonged. Specifically, the cold trap 53 has a U-bend, the cooling temperature is about-80 ℃, the pipe has a thin pipe wall, the internal and external heat transfer is enhanced, and the axial heat transfer of the pipe is weakened, so that most kerosene and sodium vapor are condensed in the cold trap 53.

Specifically, as shown in fig. 1, the input end of the fourth pipeline 8 is connected to the third pipeline 7 and is located between the fifth valve 71 and the first valve 21; a fourth valve 52, a cold trap 53 and a first vacuum device 51 are sequentially connected to the second pipeline 5; the output end of the fourth pipeline 8 is connected to the second pipeline 5 and is located between the fourth valve 52 and the cold trap 53, and the inert gas introduced into the third pipeline 7 can flow into the heat pipe 4 through the fifth valve 71, the third valve 81 and the fourth valve 52.

In this embodiment, the second pipeline 5, the third pipeline 7, the fourth pipeline 8 and the working medium storage tank 3 are located outside the glove box 1, so that the disassembly and the cleaning are convenient.

In some embodiments, as shown in fig. 1, a weighing balance 101 is built in the glove box 1, and the weighing balance 101 is used for weighing alkali metal, so that the accuracy of the alkali metal working mass placed in the heat pipe is improved. The bottom of glove box 1 is equipped with support 102, and support 102 provides the space of placing for glove box 1 to increase the height of glove box 1, can further satisfy longer heat pipe 4 and fill the demand. Specifically, the support 102 adopts a frame structure, the height is 900mm, and the bottom of the support 102 is also provided with pulleys, so that the support 102 and the glove box 1 can be conveniently moved.

As shown in fig. 1, the alkali metal heat pipe filling device further comprises a control cabinet 103, wherein the control cabinet 103 is used for controlling the opening and closing of the first valve 21, the second valve 6, the third valve 81, the fourth valve 52 and the fifth valve 71, so as to control the on-off of the pipelines, and the operation is convenient.

Example 2

As will be understood with reference to fig. 1, 5 and 6, the embodiment of the present utility model provides an alkali metal heat pipe filling apparatus, which includes a glove box 1 and a transition cabin 9, wherein the transition cabin 9 is communicated with the glove box 1, an alkali metal to be filled is placed in the glove box 1, the transition cabin 9 is used for placing a heat pipe (not shown in the drawings), and an inert gas source 12 is introduced into the glove box 1 through a first pipeline 11 to maintain an inert gas atmosphere in the glove box 1. The alkali metal heat pipe filling device can be used for carrying out alkali metal solid state filling on the heat pipe, and can be used for directly taking the heat pipe into the glove box 1 from the transition cabin 9 through the operation of the glove box 1 during operation, and placing an alkali metal working medium into the heat pipe for directly carrying out solid state filling, so that the operation is convenient. Specifically, the diameter of the transition chamber 9 may be set to 370mm and the length to 600mm. The structure of the heat pipe for solid state filling is shown in fig. 5 and 6, the heat pipe comprises a first pipe shell 105 and a first end cover 106, one end of the first pipe shell 105 is closed, after the alkali metal working medium is filled, the other end of the first pipe shell 105 can be welded with the first end cover 106 to realize sealing, and the welding device 104 arranged in the transition cabin 9 can be used for welding, for example, an argon arc welding machine is used. In addition, the argon arc welding machine in the glove box 1 can also be taken out through the transition cabin 9 to weld and seal the heat pipe 4. More specifically, the length of the heat pipe for solid state filling was 50cm, the diameter was 32cm, the wall thickness was 3mm, and the inside was intended to be filled with 48g of sodium.

In this embodiment, as shown in fig. 1, the alkali metal heat pipe filling apparatus further includes a second vacuum apparatus 10, and a pipe of the second vacuum apparatus 10 extends into the glove box 1. Vacuumizing the heat pipe after filling and before welding and sealing through the second vacuum device 10, so as to meet the requirement on the vacuum degree in the process of filling the heat pipe, and further improve the purity of the alkali metal working medium; and the filling and vacuumizing of the heat pipe are carried out in the glove box 1, so that the heat pipe filled with alkali metal and before unsealing is not required to be transferred to a vacuum cavity, and the risk caused by gas entering the heat pipe in the transfer process is reduced. Specifically, the second vacuum apparatus 10 may also employ a vacuum pump. The glove box 1 side wall is provided with an interface, for example, a KF40 interface, through which the pipe of the second vacuum apparatus 10 extends into the glove box 1.

Example 3

As will be appreciated with reference to fig. 1, 5 and 6, an alkali metal heat pipe filling apparatus is provided in an embodiment of the present utility model. Which differs from the scheme in example 1 in that: the alkali metal heat pipe filling device further comprises a transition cabin 9, the transition cabin 9 is communicated with the glove box 1, and the transition cabin 9 is used for placing a heat pipe (not shown in the figure). The alkali metal heat pipe filling device can also carry out alkali metal solid state filling on the heat pipe, and when in operation, the heat pipe can be directly taken into the glove box 1 from the transition cabin 9 by operating the glove box 1, and the alkali metal working medium is put into the heat pipe to directly carry out solid state filling, so that the operation is convenient. Specifically, the diameter of the transition chamber 9 may be set to 370mm and the length to 600mm. The structure of the heat pipe for solid state filling is shown in fig. 5 and 6, the heat pipe comprises a first pipe shell 105 and a first end cover 106, one end of the first pipe shell 105 is closed, after the alkali metal working medium is filled, the other end of the first pipe shell 105 can be welded with the first end cover 106 to realize sealing, and the welding device 104 arranged in the transition cabin 9 can be used for welding, for example, an argon arc welding machine is used. In addition, the argon arc welding machine in the glove box 1 can also be taken out through the transition cabin 9 to weld and seal the heat pipe 4. More specifically, the length of the heat pipe for solid state filling was 50cm, the diameter was 32cm, the wall thickness was 3mm, and the inside was intended to be filled with 48g of sodium.

In this embodiment, as shown in fig. 1, the alkali metal heat pipe filling apparatus further includes a second vacuum apparatus 10, and a pipe of the second vacuum apparatus 10 extends into the glove box 1. Vacuumizing the heat pipe after filling and before welding and sealing through the second vacuum device 10, so as to meet the requirement on the vacuum degree in the process of filling the heat pipe, and further improve the purity of the alkali metal working medium; and the filling and vacuumizing of the heat pipe are carried out in the glove box 1, so that the heat pipe filled with alkali metal and before unsealing is not required to be transferred to a vacuum cavity, and the risk caused by gas entering the heat pipe in the transfer process is reduced. Specifically, the second vacuum apparatus 10 may also employ a vacuum pump. The glove box 1 side wall is provided with an interface, for example, a KF40 interface, through which the pipe of the second vacuum apparatus 10 extends into the glove box 1.

Specifically, the solid-liquid independent filling is realized through the first valve 21, and when the glove box 1 is used for solid filling of the heat pipe, the first valve 21 can be controlled to be in the first state, so that a passage between the glove box 1 and the heat pipe 4 for liquid filling is cut off.

While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that this is by way of example only, and the scope of the utility model is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the principles and spirit of the utility model, but such changes and modifications fall within the scope of the utility model.

Claims (12)

1. The alkali metal heat pipe filling device comprises a glove box (1), wherein alkali metal to be filled is placed in the glove box (1), and the alkali metal heat pipe filling device is characterized in that a connecting pipe (2) is arranged on the side wall of the glove box (1), a heatable working medium storage tank (3) is connected to the other end of the connecting pipe (2), and a discharge hole of the working medium storage tank (3) is used for communicating a heat pipe (4);

the alkali metal heat pipe filling device further comprises a first pipeline (11), and two ends of the first pipeline (11) are respectively communicated with an inert gas source (12) and the glove box (1).

2. An alkali metal heat pipe filling device as claimed in claim 1, characterized in that the alkali metal heat pipe filling device further comprises a second pipe (5), one end of the second pipe (5) is connected to the heat pipe (4), and the other end of the second pipe (5) is connected to a first vacuum device (51).

3. The alkali metal heat pipe filling device according to claim 2, characterized in that a first valve (21) is mounted on the connecting pipe (2), the first valve (21) having a first state and a second state, the first valve (21) being configured such that when in the first state, the glove box (1) is disconnected from the working medium storage tank (3); when in the second state, the glove box (1) is communicated with the working medium storage tank (3);

the second valve (6) is arranged at the discharge hole of the working medium storage tank (3), and the second valve (6) is used for controlling the on-off between the working medium storage tank (3) and the heat pipe (4).

4. An alkali metal heat pipe filling device as claimed in claim 3, characterized in that the alkali metal heat pipe filling device further comprises a third pipe (7) communicating with the working medium storage tank (3), the third pipe (7) being for introducing an inert gas.

5. The alkali metal heat pipe charging device according to claim 4, wherein the first valve (21) has a first connection port (211), a second connection port (212) and a third connection port (213) which are capable of communicating with each other, the connection pipe (2) is connected to the first connection port (211), the feed port of the working medium storage tank (3) is connected to the second connection port (212), and the third pipe (7) is connected to the third connection port (213).

6. The alkali metal heat pipe charging apparatus as claimed in claim 5, wherein, when the first valve (21) is configured to be in the first state, neither the first connection port (211) nor the third connection port (213) is in communication with the second connection port (212);

the first valve (21) is configured such that, when in the second state, the first connection port (211) and the second connection port (212) are in communication, and neither the first connection port (211) nor the second connection port (212) is in communication with the third connection port (213);

the first valve (21) further has a third state, and when the first valve (21) is configured to be in the third state, the second connection port (212) and the third connection port (213) are communicated, and neither the second connection port (212) nor the third connection port (213) is communicated with the first connection port (211).

7. The alkali metal heat pipe filling device according to claim 4, wherein a fourth pipeline (8) is communicated between the second pipeline (5) and the third pipeline, a third valve (81) is arranged on the fourth pipeline (8), and the third valve (81) is used for controlling on-off of the fourth pipeline (8).

8. The alkali metal heat pipe filling device according to claim 4, wherein a fourth valve (52) is provided on the second pipe (5), and the fourth valve (52) is used for controlling the on-off of the second pipe (5);

and/or a fifth valve (71) is arranged on the third pipeline, and the fifth valve (71) is used for controlling the on-off of the third pipeline.

9. An alkali metal heat pipe filling device as claimed in claim 2, characterized in that the second pipeline (5) is provided with a cold trap (53), and the cold trap (53) is filled with liquid nitrogen.

10. An alkali metal heat pipe filling apparatus as claimed in claim 3, further comprising a transition compartment (9), said transition compartment (9) being in communication with said glove box (1), said transition compartment (9) being for placement of heat pipes.

11. An alkali metal heat pipe filling apparatus as claimed in claim 10, further comprising a second vacuum apparatus (10), wherein the pipe of the second vacuum apparatus (10) extends into the glove box (1).

12. The alkali metal heat pipe filling apparatus according to any one of claims 1 to 11, wherein a weighing balance (101) is built in the glove box (1), the weighing balance (101) being used for weighing the alkali metal;

and/or the bottom of the glove box (1) is provided with a bracket (102).