Electronic silicon low-temperature extraction heat exchanger
By adopting trough welding and two-stage condensation technology in silicon low-temperature extraction heat exchangers, the problem of existing heat exchangers requiring a large amount of liquid nitrogen in low-temperature environments is solved, and the use of liquid nitrogen and production costs are reduced.
Patent Information
- Application Number
- CN202421829513.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-31
- Publication Date
- 2025-06-03
- Estimated Expiration
- 2034-07-31
AI Technical Summary
The existing silicon low-temperature extraction heat exchangers require a large amount of liquid nitrogen when maintaining a low temperature environment, resulting in increased production costs and inability to effectively save liquid nitrogen use, affecting economics.
An electronic silicon low-temperature extraction and heat exchanger is designed. By using groove welding between the tube plate and the heat exchange tube, 3mm space is left, and a head is set in the secondary condenser to achieve two-stage condensation and reduce the use of liquid nitrogen.
Through the two-stage condensation technology, the use of liquid nitrogen is reduced by about 30%, the production cost is reduced, and the economic and practicality of the heat exchanger is improved.
Smart Images
Figure CN222938302U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of heat exchangers, in particular to an electronic silicon low-temperature extraction heat exchanger. Background Art
[0002] The electronic silicon low-temperature extraction heat exchanger is a heat exchange device used for the extraction process under low-temperature conditions, and is usually used to extract specific compounds or separate impurities from industries such as natural gas, petroleum, and chemical engineering. This heat exchanger utilizes the characteristics of electronic silicon materials and can effectively conduct heat exchange at lower temperatures, thereby protecting the target substances in the extraction process from thermal damage or degradation. The electronic silicon low-temperature extraction heat exchanger utilizes the good thermal conductivity and stability of electronic silicon materials to transfer heat energy to the substances to be extracted under low-temperature conditions.
[0003] Silicon low-temperature extraction heat exchangers are used in many industrial and scientific fields. In the chemical industry, silicon low-temperature extraction heat exchangers are commonly used in chemical reactions, separation, and extraction processes at low temperatures. For example, in the fields of ethanol preparation, liquid gas separation, and petroleum refining, extraction or separation operations usually need to be carried out under low-temperature conditions, and silicon low-temperature extraction heat exchangers can provide a stable low-temperature environment to ensure the smooth progress of these operations.
[0004] The existing silicon low-temperature extraction heat exchanger is composed of a shell, a tube bundle, and a tube sheet. However, the current heat exchanger requires a large amount of liquid nitrogen industrial gas during use. For example, a large amount of it needs to be used to maintain a low-temperature environment, which will increase production costs. At the same time, the silicon low-temperature extraction heat exchanger cannot effectively save the use of liquid nitrogen, which will have a negative impact on production economy and cannot meet the needs of users. Summary of the Utility Model
[0005] In order to make up for the above deficiencies, the utility model provides an electronic silicon low-temperature extraction heat exchanger, aiming to improve the problems in the prior art that if a large amount of it is used to maintain a low-temperature environment, it will increase production costs, and at the same time, the silicon low-temperature extraction heat exchanger cannot effectively save the use of liquid nitrogen, which will have a negative impact on production economy.
[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: an electronic silicon low-temperature extraction heat exchanger, including a heat exchange tube, both the front and rear right ends of the outer wall of the heat exchange tube are fixedly connected with tie rods, the left side of the outer wall of the heat exchange tube is communicated with a cylinder body, the middle of the left side of the cylinder body is fixedly connected with a tube sheet, both the left and right sides of the bottom end of the outer wall of the heat exchange tube are fixedly connected with saddle supports, the middle of the left side of the tube sheet is fixedly connected with a tube box section, and a head is arranged in the middle of the left side of the tube box section.
[0007] As a further description of the above technical solution:
[0008] The bottoms of the two saddle supports are both set at the same horizontal height.
[0009] As a further description of the above technical solution:
[0010] The outer wall of the left side of the head is lubricated.
[0011] As a further description of the above technical solution:
[0012] The inward sides of the two tie rods are both symmetrically designed.
[0013] As a further description of the above technical solution:
[0014] The outer wall of the heat exchange tube is designed as a cylinder.
[0015] As a further description of the above technical solution:
[0016] The material of the heat exchange tube is a metal material.
[0017] As a further description of the above technical solution:
[0018] The inner side of the head is engaged with the inner left side of the tube box cylinder section.
[0019] The utility model has the following beneficial effects:
[0020] 1. In the utility model, usually the working condition of the heat exchanger is that liquid nitrogen condenses silane. Due to the low temperature and high pressure, the tube sheet and the heat exchange tube are welded separately by groove welding, leaving 3 mm outside the heat exchange tube on the tube sheet for welding with the tube head of the heat exchange tube. In this way, the low-temperature gaseous nitrogen in the primary condenser is used to pre-cool the silane in the secondary condenser, thus saving the consumption of liquid nitrogen. The feedback data shows that the consumption of liquid nitrogen is reduced by 30%, thus meeting the needs of users and improving the practicability of the heat exchanger. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 FIG. is a front-side perspective view of the heat exchange tube of an electronic silicon low-temperature extraction heat exchanger proposed by the utility model.
[0022] Legend:
[0023] 1. Head; 2. Tube box cylinder section; 3. Tube sheet; 4. Cylinder body; 5. Saddle support; 6. Tie rod; 7. Heat exchange tube. DETAILED DESCRIPTION OF THE INVENTION
[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.
[0025] Please refer to the attached Figure 1 , an embodiment provided by the present utility model: an electronic silicon low-temperature extraction heat exchanger, which includes a heat exchange tube 7. At the right ends of the front and rear sides of the outer wall of the heat exchange tube 7, tie rods 6 are fixedly connected. The left side of the outer wall of the heat exchange tube 7 is communicated with a cylinder body 4. In the middle of the left side of the cylinder body 4, a tube sheet 3 is fixedly connected. At the left and right sides of the bottom end of the outer wall of the heat exchange tube 7, saddle supports 5 are fixedly connected. In the middle of the left side of the tube sheet 3, a tube box barrel section 2 is fixedly connected. In the middle of the left side of the tube box barrel section 2, a head 1 is provided.
[0026] Specifically, the heat exchange tube 7 plays a crucial role. The outer wall of this heat exchange tube 7 is designed to be strong and durable to ensure stable operation under various working conditions. At the right ends of the front and rear sides of its outer wall, we can see two carefully installed tie rods 6. On the left side of the heat exchange tube 7, it is communicated with a cylinder body 4. This cylinder body 4 is another key component in the heat exchange device. It cooperates with the heat exchange tube 7 to achieve efficient heat transfer. At the bottom end of the outer wall of the heat exchange tube 7, two saddle supports 5 are also installed. These saddle supports 5 not only provide additional support for the heat exchange tube 7, but also make the entire device more stable during operation, reducing the risk of damage caused by vibration or other external force factors.
[0027] Please refer to the attached Figure 1 ; The bottom ends of the two saddle supports 5 are both set at the same horizontal height. The outer wall of the head 1 is lubricated. The inward sides of the two tie rods 6 are both symmetrically designed. The outer wall of the heat exchange tube 7 is designed as a cylinder. The material of the heat exchange tube 7 is a metal material. The inner side of the head 1 is engaged with the inner left side of the tube box barrel section 2.
[0028] Specifically, the two saddle supports 5 are important support structures in this heat exchange device. Their bottom ends are carefully adjusted to the same horizontal height to ensure that the heat exchange tube 7 can be placed on the supports smoothly and evenly, reducing stress or vibration caused by imbalance. This lubrication treatment enables the head 1 to reduce friction and wear when contacting other components. The inner side of the head 1 is engaged with the inner left side of the tube box barrel section 2. This engagement design enables a tight seal connection to be formed between the head 1 and the tube box barrel section 2.
[0029] Working principle: Usually, the working condition of the heat exchanger is that liquid nitrogen condenses silane. Due to the low temperature and high pressure, the tube sheet 3 and the heat exchange tubes 7 are welded separately by groove welding. A 3-mm gap is left outside the heat exchange tubes 7 on the tube sheet 3 for welding with the tube heads of the heat exchange tubes 7. This kind of welding reduces the welding stress and does not affect the welding quality of the shell under low-temperature conditions. In a conventional heat exchanger, liquid nitrogen enters from the upper part and exits from the lower part. Sometimes, liquid nitrogen is discharged without being vaporized. This design is a two-stage condensation. The outlet of the first-stage condenser is set to be at the upper part. In this way, the low-temperature gaseous nitrogen from the first-stage condenser pre-cools the silane in the second-stage condenser, thereby saving the consumption of liquid nitrogen. The feedback data shows that the liquid nitrogen consumption is reduced by 30%, thus meeting the needs of users and improving the practicality of the heat exchanger.
[0030] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.
Claims
1. An electronic silicon low temperature extraction heat exchanger, comprising a heat exchange tube (7), characterized in that: The right ends of the front and rear sides of the outer wall of the heat exchange tube (7) are fixedly connected to tie rods (6); the left side of the outer wall of the heat exchange tube (7) is connected to a cylinder (4); the middle of the left side of the cylinder (4) is fixedly connected to a tube sheet (3); the left and right sides of the bottom end of the outer wall of the heat exchange tube (7) are fixedly connected to saddle supports (5); the middle of the left side of the tube sheet (3) is fixedly connected to a tube box barrel section (2); and the middle of the left side of the tube box barrel section (2) is provided with a head (1).
2. The electronic silicon low temperature extraction heat exchanger according to claim 1, characterized in that: The bottom ends of the two saddle supports (5) are arranged at the same horizontal height.
3. The electronic silicon low temperature extraction heat exchanger according to claim 1, characterized in that: The left side of the outer wall of the end cap (1) is lubricated.
4. The electronic silicon low temperature extraction heat exchanger according to claim 1, characterized in that: The inward sides of the two pull rods (6) are both symmetrically designed.
5. The electronic silicon low temperature extraction heat exchanger according to claim 1, characterized in that: The outer wall of the heat exchange tube (7) is designed as a cylinder.
6. The electronic silicon low temperature extraction heat exchanger according to claim 1, characterized in that: The heat exchange tube (7) is made of metal material.
7. The electronic silicon low temperature extraction heat exchanger according to claim 1, characterized in that: The inner side of the sealing head (1) is engaged with the inner left side of the pipe box barrel section (2).