A high-efficiency heat-exchange low-temperature cold trap

Abstract

The utility model relates to a kind of low-temperature cold traps of high efficient heat exchange, belong to cold trap technical field, a kind of low-temperature cold traps of high efficient heat exchange, including cold trap shell, the upside of the cold trap shell is fixedly arranged with compressor, the inside of the cold trap shell is provided with heat exchange pipe, the inside one side of the cold trap shell is fixedly arranged with the fixed mechanism for fixed heat exchange pipe, the input and output of the heat exchange pipe are fixedly arranged with the conveying mechanism of conveying gas, the input of the compressor is fixedly arranged with the helium gas inlet pipe of conveying helium gas, the output of the compressor is fixedly arranged with the gas outlet pipe in the inside of cold trap shell, in the utility model, by setting compressor, heat exchange pipe and conveying mechanism, heat exchange by two kinds of ways, and improve heat exchange effect by conveying mechanism, improve heat exchange efficiency, by setting guide plate and drain pipe, these liquids or solids can be avoided to remain in cold trap, avoid short circuit.

Description

Technical Field

[0001] This utility model belongs to the field of cold trap technology, specifically relating to a low-temperature cold trap with high-efficiency heat exchange. Background Technology

[0002] A cryogenic cold trap is a device used to capture gases, vapors, or volatile substances. It is widely used in scientific experiments and industrial production. The working principle of a cryogenic cold trap is based on the difference in saturated vapor pressure of different gases at low temperatures. When a gas mixture comes into contact with the surface of a cold trap at a sufficiently low temperature, the gas components with higher boiling points will condense into liquid or solid states and be captured, thereby achieving gas separation and purification.

[0003] For example, in the Chinese utility model with announcement number CN218474899U and titled "A Low-Temperature Cold Trap", it specifically includes a shell with a cavity and an opening. The above-mentioned prior art improves the cooling efficiency of the cold trap, but the gas distribution space is large, which will lead to uneven cooling effect and make it difficult for the gas to fully exchange heat and improve heat exchange efficiency. Therefore, there is a need for a low-temperature cold trap with high heat exchange efficiency. Utility Model Content

[0004] The purpose of this invention is to provide a low-temperature cold trap with a simple structure and reasonable design that provides efficient heat exchange in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions: A high-efficiency heat exchange cryogenic cold trap includes a cold trap shell, a compressor fixedly mounted on the upper side of the cold trap shell, a heat exchange tube disposed inside the cold trap shell, a fixing mechanism for fixing the heat exchange tube fixedly mounted on one side inside the cold trap shell, and a gas conveying mechanism fixedly mounted at the inlet and outlet of the heat exchange tube.

[0006] As a further optimization of this utility model, the compressor's input port is fixedly provided with a helium inlet pipe for conveying helium, the compressor's output port is fixedly provided with an outlet pipe located inside the cold trap shell, and the upper side of the cold trap shell is fixedly connected to an exhaust pipe for discharging helium.

[0007] As a further optimization of this utility model, the conveying mechanism includes a steam inlet pipe fixedly connected to the inlet of the heat exchange tube, and conveying pipes fixedly connected to both sides of the outlet of the heat exchange tube through a three-way pipe. A horizontal pipe for passing gas is fixedly connected to the middle of both conveying pipes, and a liquid outlet pipe for discharging liquid is fixedly connected to the lower side of both conveying pipes.

[0008] As a further optimization of this utility model, the fixing mechanism includes two fixing frames fixed to the inner wall of the cold trap shell, and a cover plate that passes through and fits onto the outside of the heat exchange tube is fixed to one side of the fixing frame by bolts.

[0009] As a further optimization of this utility model, an inclined liquid guiding plate is fixedly provided on the lower inner side of the cold trap shell, and a drain pipe is fixedly connected to the lower side of the cold trap shell.

[0010] As a further optimization of this utility model, the liquid guide plate is fixedly installed below the liquid outlet pipe, and the lower sides of the steam inlet pipe and the delivery pipe are both fixedly installed on the liquid guide plate.

[0011] The beneficial effects of this utility model are as follows: This invention incorporates a compressor, a heat exchange tube, and a conveying mechanism. The compressor cools the helium gas through compression and delivers it into the cold trap shell. The bottom of the heat exchange tube is connected to a pipe through which hot steam enters the vacuum chamber. The hot steam exchanges heat through the heat exchange tube, flows to the conveying pipe, and is then cooled by external cold air, causing the hot steam to re-enter the vacuum chamber as cold air. This two-step heat exchange mechanism, combined with the conveying mechanism, enhances the heat exchange effect and improves heat exchange efficiency.

[0012] This invention, by setting up a liquid guide plate and a drain pipe, guides the liquid or solid generated during heat exchange through the liquid guide plate to flow to the drain pipe and be discharged from the drain pipe, thus preventing these liquids or solids from remaining in the cold trap and avoiding short circuits. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall front structure of this utility model; Figure 2 This is a schematic diagram of the overall bottom structure of this utility model; Figure 3 This is a side sectional view of the present invention; Figure 4 This is a utility model Figure 3 Enlarged view of point A in the middle; Figure 5 This is a front sectional view of the heat exchange tube and conveying mechanism of this utility model.

[0014] In the diagram: 1. Cold trap shell; 2. Compressor; 3. Helium inlet pipe; 4. Outlet pipe; 5. Exhaust pipe; 6. Fixing mechanism; 601. Fixing frame; 602. Cover plate; 7. Heat exchange tube; 8. Conveying mechanism; 801. Steam inlet pipe; 802. Conveying pipe; 803. Horizontal pipe; 804. Liquid outlet pipe; 9. Liquid guide plate; 10. Liquid drain pipe. Detailed Implementation

[0015] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0016] Example 1: As Figure 1 , Figure 2 , Figure 3 As shown, a high-efficiency heat exchange cryogenic cold trap includes a cold trap shell 1, which is mounted on a vacuum chamber. A compressor 2 is fixedly installed on the upper side of the cold trap shell 1. A helium inlet pipe 3 for conveying helium is fixedly installed at the inlet of the compressor 2. Helium enters the compressor 2 through the helium inlet pipe 3, and the compressor 2 compresses the helium to cool it down. An outlet pipe 4 is fixedly installed at the bottom of the compressor 2. The outlet pipe 4 is located inside the cold trap shell 1, and the cooled helium is input into the cold trap shell 1 through the outlet pipe 4. An exhaust pipe 5 for discharging helium is fixedly connected to the upper side of the cold trap shell 1. The exhausted helium is discharged through the exhaust pipe 5.

[0017] like Figure 3 , Figure 4 As shown, a heat exchange tube 7 is installed inside the cold trap shell 1. The heat exchange tube 7 is finned to improve heat exchange efficiency. A fixing mechanism 6 is fixedly installed on one side inside the cold trap shell 1. The fixing mechanism 6 is used to fix the heat exchange tube 7. The fixing mechanism 6 includes two fixing brackets 601. One side of the fixing bracket 601 is an arc-shaped plate. Both fixing brackets 601 are fixed to the inner wall of the cold trap shell 1. A cover plate 602 is fixed to one side of the fixing bracket 601 by bolts. The cover plate 602 passes through and fits on the outside of the heat exchange tube 7. The heat exchange tube 7 is placed in the arc-shaped plate on the front side of the fixing bracket 601. Then the cover plate 602 is aligned with the arc-shaped plate on the fixing bracket 601. The bolts fix the fixing bracket 601 and the cover plate 602 together, fixing the heat exchange tube 7 in the middle of the cold trap shell 1.

[0018] like Figure 5As shown, a gas conveying mechanism 8 is fixedly installed at the inlet and outlet of the heat exchange tube 7. The conveying mechanism 8 includes a steam inlet pipe 801, which is fixedly connected to the inlet of the heat exchange tube 7. Hot steam in the vacuum chamber is conveyed to the heat exchange tube 7 through the steam inlet pipe 801 and heat exchanged through the heat exchange tube 7. The outlet of the heat exchange tube 7 is fixedly connected to conveying pipes 802 on both sides through a three-way pipe. The gas that has been heat-exchanged by the heat exchange tube 7 flows into the conveying pipes 802. While in the conveying pipes 802, cold helium gas from the outside cools it down. A horizontal pipe 803 for passing gas is fixedly connected in the middle of the two conveying pipes 802. A liquid outlet pipe 804 for discharging liquid is fixedly connected to the lower side of the two conveying pipes 802. The gas will generate liquid after cooling. The generated liquid will be discharged from the liquid outlet pipe 804. The gas will be conveyed to the outlet of the conveying pipe 802 through the horizontal pipe 803. The cooled gas will be reintroduced into the vacuum chamber from the outlet of the conveying pipe 802.

[0019] like Figure 2 , Figure 3 As shown, an inclined liquid guide plate 9 is fixedly installed on the lower side of the interior of the cold trap shell 1. A drain pipe 10 is fixedly connected to the lower side of the cold trap shell 1. The liquid guide plate 9 is fixedly installed below the liquid outlet pipe 804. The lower side of the steam inlet pipe 801 is fixedly installed through the liquid guide plate 9. The lower side of the delivery pipe 802 is also fixedly installed through the liquid guide plate 9. The liquid discharged from the delivery mechanism 8 cannot remain in the cold trap shell 1 to avoid short circuit of internal instruments. The liquid guide plate 9 guides the liquid to the drain pipe 10, so that the liquid is discharged from the drain pipe 10.

[0020] It should be noted that, in use, this high-efficiency heat exchange cryogenic cold trap is installed above the vacuum chamber with the cold trap shell 1 installed. The compressor 2 is turned on, and compressed and cooled helium gas is introduced into the cold trap shell 1, filling it with helium. The heat exchange tube 7 is turned on, and the hot steam in the vacuum chamber is transported from the steam inlet pipe 801 into the heat exchange tube 7. After heat exchange in the heat exchange tube 7, the steam flows to the delivery pipe 802. After entering the delivery pipe 802, the gas is cooled again by the external cryogenic helium gas, which then produces liquid. The liquid is discharged from the liquid outlet pipe 804, and the gas is transported from the horizontal pipe 803 to the outlet of the delivery pipe 802. The cooled gas re-enters the vacuum chamber from the outlet of the delivery pipe 802, and the liquid falls onto the liquid guide plate 9. Guided by the liquid guide plate 9, the liquid is discharged from the drain pipe 10.

[0021] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A high-efficiency heat-exchange low-temperature cold trap comprising a cold trap housing (1), characterized in that, A compressor (2) is fixedly installed on the upper side of the cold trap shell (1). A heat exchange tube (7) is installed inside the cold trap shell (1). A fixing mechanism (6) for fixing the heat exchange tube (7) is fixedly installed on one side inside the cold trap shell (1). A gas conveying mechanism (8) is fixedly installed at the inlet and outlet of the heat exchange tube (7).

2. The low-temperature cold trap with high heat exchange efficiency according to claim 1, characterized in that: The compressor (2) has a fixed helium inlet pipe (3) for conveying helium at its inlet, and an outlet pipe (4) located inside the cold trap shell (1) at its outlet. The upper side of the cold trap shell (1) is fixedly connected to an exhaust pipe (5) for discharging helium.

3. The low-temperature cold trap with high heat exchange efficiency according to claim 1, characterized in that: The conveying mechanism (8) includes a steam inlet pipe (801) fixedly connected to the inlet of the heat exchange tube (7), and conveying pipes (802) fixedly connected to both sides of the outlet of the heat exchange tube (7) through a three-way pipe. A horizontal pipe (803) for passing gas is fixedly connected to the middle of both conveying pipes (802), and a liquid outlet pipe (804) for discharging liquid is fixedly connected to the lower side of both conveying pipes (802).

4. The low-temperature cold trap with high heat exchange efficiency according to claim 2, characterized in that: The fixing mechanism (6) includes two fixing frames (601) fixed to the inner wall of the cold trap shell (1). One side of the fixing frame (601) is fixed with a cover plate (602) that passes through and fits on the outside of the heat exchange tube (7) by bolts.

5. The low-temperature cold trap with high heat exchange efficiency according to claim 3, characterized in that: An inclined liquid guide plate (9) is fixedly installed on the lower side of the inside of the cold trap shell (1), and a drain pipe (10) is fixedly connected to the lower side of the cold trap shell (1).

6. The low-temperature cold trap with high heat exchange efficiency according to claim 5, characterized in that: The liquid guide plate (9) is fixedly installed below the liquid outlet pipe (804), and the lower sides of the steam inlet pipe (801) and the delivery pipe (802) are both fixedly installed on the liquid guide plate (9).

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