A C-section current lead-to-power copper bar anti-frost condensation system

Abstract

The application discloses a C-section current lead-to-power copper bar anti-frosting and anti-condensation system, which comprises a total air inlet pipe, one end of the total air inlet pipe is connected with an external air heating device, the other end of the total air inlet pipe is communicated with an air pipe shunt, a plurality of branch air pipes are communicated with the air pipe shunt, and the ends, away from the air pipe shunt, of the branch air pipes are communicated to all parts of the surrounding space and are used for anti-frosting and anti-condensation in the surrounding space. The application is suitable for the anti-frosting technical field of the power copper bar, can form a negative pressure in a relatively closed space, prevent natural air from contacting the C-section current lead and the power copper bar, introduce dry heated air to reduce the dew point, effectively realize low-cost and high-efficiency anti-frosting and anti-condensation of the C-section current lead and the power copper bar in a narrow space, has low investment cost and simple structure, and is very convenient to install, detect and maintain.

Description

Technical Field

[0001] This invention belongs to the field of anti-frost technology for power supply copper busbars, specifically an anti-frost and condensation system for C-section current leads to power supply copper busbars. Background Technology

[0002] The current leads in a tokamak device typically operate at extremely low temperatures (below -200 degrees Celsius), resulting in very low temperatures for the current leads themselves. Due to the thermal conductivity of copper, the C-section of the current lead connected to the atmospheric power busbar has a temperature below -10 degrees Celsius. The connection point is exposed to air containing moisture, which can cause frost or condensation upon contact with the low-temperature current lead. This degrades the insulation performance of the copper busbar's insulation layer. Since the power busbar needs to carry 700-1000A of current during operation, severe insulation degradation can lead to short circuits between the busbars, potentially burning out the power supply or even causing an explosion, endangering the safety of personnel.

[0003] Therefore, there is an urgent need to design an anti-frost system to solve this problem and prevent frost or condensation from forming on the copper busbars. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide an anti-frost and condensation system for the C-section current lead to the power supply copper busbar.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A system for preventing frost and condensation in a C-section current lead to a power supply copper busbar includes a main air intake pipe. One end of the main air intake pipe is connected to an external air heating device, and the other end is connected to an air pipe splitter. Several branch air pipes are connected to the air pipe splitter. The end of each branch air pipe away from the air pipe splitter is connected to various parts of the enclosed space for preventing frost and condensation within the enclosed space.

[0007] Preferably, the enclosing space includes an antimagnetic steel plate enclosure covering the outside of the current lead C segment and the power supply copper busbar.

[0008] Preferably, the main intake pipe is connected to the middle of the main intake pipe branch pipe, the two ends of the main intake pipe branch pipe are respectively connected to the middle of the two main intake pipe branch pipes, and the two ends of the main intake pipe branch pipe are respectively connected to the air pipe splitter.

[0009] Preferably, the air pipe splitter has a hollow structure with an air inlet on its side for connecting to the main air inlet branch pipe, and several air outlets on its top for connecting to the branch pipe.

[0010] Preferably, the air distribution pipe is equipped with a valve for controlling the air intake volume and air intake rate.

[0011] Preferably, the enclosing space is provided with a plurality of air inlet ports for connecting to the air distribution pipe.

[0012] Preferably, the enclosed space has several current lead C segments connected to the power supply copper busbar, and the upper and lower ends of both sides and the top ends of the power supply copper busbar connection are provided with air inlets.

[0013] Preferably, the top of the enclosing space is provided with an air inlet located between adjacent power copper busbars.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] In this invention, a negative pressure is created in a relatively enclosed space to prevent natural air from contacting the current lead C section and the power supply copper busbar. Heated and dry air is introduced to lower the dew point, effectively preventing frost or condensation on the current lead C section and the power supply copper busbar in a confined space at low cost and high efficiency. The investment cost is low, and the structure is simple. Installation, testing, and maintenance are very convenient. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of an anti-frost and condensation system for a C-section current lead to a power supply copper busbar according to the present invention;

[0017] Figure 2 This is a schematic diagram of the shell-removing structure of an anti-frost and condensation system for a C-section current lead to a power supply copper busbar according to the present invention.

[0018] Reference numerals in the attached diagram: 1. Main intake pipe; 11. Main intake pipe branch pipe; 12. Main intake pipe branch pipe; 2. Air pipe splitter; 3. Air splitter pipe; 4. Enclosed space; 5. Connection between current lead C section and power supply copper busbar; 6. Valve. Detailed Implementation

[0019] The specific embodiments of the present invention are described in detail below.

[0020] The "range" disclosed in this invention is defined by a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of a particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if a range of 10–50 is listed for a specific parameter, it is also expected that ranges of 10–40 and 20–50 are also included. Furthermore, if the minimum range values ​​are 1 and 2, and the maximum range values ​​are 3, 4, and 5, then the following ranges are all expected: 1–3, 1–4, 1–5, 2–3, 2–4, and 2–5. In this application, unless otherwise stated, the numerical range "a–b" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0–5" means that all real numbers between "0–5" have been listed herein; "0–5" is merely a shortened representation of these numerical combinations.

[0021] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0022] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0023] Unless otherwise specified, all steps in this application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0024] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0025] Unless otherwise specified, the reaction will proceed under normal temperature and pressure conditions.

[0026] Unless otherwise specified, all parts or percentages are by weight or by weight percentage.

[0027] In this invention, all the substances used are known substances that can be purchased or synthesized by known methods.

[0028] In this invention, all the devices or equipment used are conventional devices or equipment known in the art and are readily available.

[0029] The following embodiments further illustrate specific implementations of the anti-frost and condensation system for the C-section current lead to the power supply copper busbar according to the present invention. The anti-frost and condensation system for the C-section current lead to the power supply copper busbar according to the present invention is not limited to the descriptions in the following embodiments.

[0030] Example 1:

[0031] A system for preventing frost and condensation on the C-section current lead to the power busbar, such as Figure 1-2 As shown, it includes a main air intake pipe 1, one end of which is connected to an external air heating device, and the other end of which is connected to an air pipe splitter 2. Several branch air pipes 3 are connected to the air pipe splitter 2. The end of the branch air pipe 3 away from the air pipe splitter 2 is connected to various parts of the enclosing space 4 for preventing frost and condensation in the enclosing space 4.

[0032] In one possible implementation, the enclosing space 4 includes an antimagnetic steel plate enclosure covering the outside of the current lead C segment and the power supply copper busbar.

[0033] In one possible implementation, the main intake pipe 1 is connected to the middle of the main intake pipe branch pipe 11, and the two ends of the main intake pipe branch pipe 11 are respectively connected to the middle of the two main intake pipe branch pipes 12. The two ends of the main intake pipe branch pipe 12 are respectively connected to the air pipe splitter 2.

[0034] In one possible implementation, the tracheal splitter 2 has a hollow structure with an air inlet on its side for connecting to the main air inlet branch pipe 12, and several air outlets on its top for connecting to the branch pipe 3.

[0035] In one possible implementation, the air distribution pipe 3 is equipped with a valve 6 for controlling the air intake volume and air intake rate.

[0036] In one possible implementation, the enclosing space 4 is provided with several air intake ports for connecting to the air distribution pipe 3.

[0037] In one possible implementation, the enclosing space 4 has several current lead C segments connected to power copper busbars 5, and the upper and lower ends of both sides and the top ends of the power copper busbar connection 5 are provided with air inlets.

[0038] In one possible implementation, the top of the enclosing space 4 is provided with an air intake between adjacent power copper busbars.

[0039] In one possible implementation, the temperature in the constant temperature and humidity room is generally set at 30 degrees Celsius, the humidity at 60%, and the dew point temperature of the air at around 21 degrees Celsius. However, this is not fixed. Due to limited conditions, the temperature in the constant temperature and humidity room is generally between 10 degrees Celsius and 40 degrees Celsius, and the humidity is between 60% and 80%. When exposed to air, frost or condensation is easily generated. By designing an antimagnetic steel plate enclosure at the connection between the current lead C section and the power supply copper busbar to form an enclosed space 4, the contact range between the copper busbar and the natural air is reduced. At the same time, heated and dried air (the dew point temperature of the dried air is -10 degrees Celsius) is introduced into the enclosed space 4 to form a negative pressure, preventing natural air from entering the enclosed space.

[0040] Furthermore, by controlling the gas flow rate and gas temperature, the temperature at the copper busbar connection can be increased, thereby preventing frost or condensation (e.g., Figure 1 , Figure 2 As shown, dry air enters the enclosed space 4 from the air intake port.

[0041] In one possible implementation, when the enclosure space 4 cover is open and no dry air is introduced, noticeable water droplets will appear on the insulation layer wrapped around the copper busbar after the low-temperature current leads have been in contact with natural air for a period of time. However, after opening valve 6 to introduce heated dry air, the current leads and power connection copper busbars within the enclosure space remain dry without water droplets. This ensures stable operation of the tokamak under high-current conditions.

[0042] By adopting the above technical solution:

[0043] Traditional control systems using heating wires and heating bands are complex, costly, and space-consuming, making them unsuitable for use near confined spaces in tokamak devices. In contrast, the design of this application, which creates negative pressure in a relatively enclosed space to prevent natural air from contacting the current lead C section and the power supply copper busbar, and introduces heated, dry air to lower the dew point, effectively achieves low-cost and high-efficiency prevention of frost or condensation on the current lead C section and the power supply copper busbar in confined spaces.

[0044] Working principle: such as Figure 1-2 As shown, the heated dry air is distributed to the compressed air distribution pipe 3 by the air pipe splitter 2 through the main air intake pipe 1. The air volume is controlled by the valve 6 and enters the enclosed space 4 to isolate the current lead C section from the power copper busbar 5 with self-heating air, thereby achieving the purpose of preventing frost or condensation.

[0045] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the scope of protection of the present invention.

Claims

1. A system for preventing frost and condensation on the C-section current lead to the power supply copper busbar, characterized in that: Includes a main air intake pipe (1), one end of which is connected to an external air heating device, and the other end of which is connected to an air pipe splitter (2). Several branch air pipes (3) are connected to the air pipe splitter (2), and the end of the branch air pipe (3) away from the air pipe splitter (2) is connected to various parts of the enclosing space (4) for preventing frost and condensation in the enclosing space (4). The main intake pipe (1) is connected to the middle of the main intake pipe branch pipe (11), and the two ends of the main intake pipe branch pipe (11) are respectively connected to the middle of the two main intake pipe branch pipes (12). The two ends of the main intake pipe branch pipe (12) are respectively connected to the air pipe splitter (2). The air pipe splitter (2) has a hollow structure, with an air inlet on its side for connecting to the main air inlet branch pipe (12), and several air outlets on its top for connecting to the branch pipe (3). The enclosed space (4) contains several current lead C segments and power copper busbar connection points (5). The upper and lower ends of both sides and the top two ends of the power copper busbar connection points (5) are provided with air inlets. The top of the enclosing space (4) is provided with an air inlet located between adjacent power copper busbars.

2. The anti-frost and anti-condensation system for the C-section current lead to the power supply copper busbar as described in claim 1, characterized in that: The enclosing space (4) includes an antimagnetic steel plate enclosure covering the outside of the current lead C segment and the power supply copper busbar.

3. The anti-frost and anti-condensation system for the C-section current lead to the power supply copper busbar as described in claim 1, characterized in that: The gas distribution pipe (3) is equipped with a valve (6) for controlling the intake volume and intake rate.

4. The anti-frost and anti-condensation system for the C-section current lead to the power supply copper busbar as described in claim 1, characterized in that: The enclosing space (4) is provided with several air inlets for connecting to the air distribution pipe (3).

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