Resistance-adjustable liquid nitrogen arrangement resistor

Abstract

The invention relates to the technical field of resistors, in particular to a resistance-adjustable liquid nitrogen arrangement resistor. The liquid nitrogen temperature control device comprises a control box, an adjustable resistor module arranged in the control box and a liquid nitrogen temperature control assembly communicated with the control box, the adjustable resistor module comprises a resistor shell, an annular resistor arranged in the resistor shell and a plurality of groups of external terminals welded on the annular resistor, the liquid nitrogen temperature control assembly comprises a liquid nitrogen input and output system which is connected into the control box and used for controlling the temperature in the control box, and a control system which controls operation of the liquid nitrogen input and output system and detects and controls the temperature in the control box. According to the technical scheme, the whole row of resistors can be replaced, each resistor does not need to be replaced independently, and the maintenance difficulty and cost are reduced; the liquid nitrogen temperature control assembly is matched to quickly cool the interior, so that cooling is accelerated, resistance parameters are controlled, the efficiency is high, the stability is higher, and the control precision is high.

Description

Technical Field

[0001] The invention relates to the technical field of resistors, and in particular to a liquid nitrogen array resistor with adjustable resistance. Background Art

[0002] The resistance of a conductor to the current is called the resistance of the conductor. Resistance is a physical quantity that indicates the magnitude of the resistance of a conductor to the current in physics. The greater the resistance of a conductor, the greater the resistance of the conductor to the current. Different conductors generally have different resistances, and resistance is a property of the conductor itself.

[0003] The existing technology, CN202411165164X, the existing resistors used in conjunction have low precision and cannot be used accurately with the equipment. When used with some larger equipment, they cannot be adapted. Larger resistors are required to match the larger equipment, and the practicality is low, and they cannot be adapted to different environments and different equipment.

[0004] Therefore, it is necessary to design a liquid nitrogen array resistor with adjustable resistance to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a liquid nitrogen array resistor with adjustable resistance to overcome the above-mentioned shortcomings of the current prior art.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A liquid nitrogen array resistor with adjustable resistance, comprising a control box, an adjustable resistor module placed in the control box, and a liquid nitrogen temperature control component connected to the control box, wherein the adjustable resistor module comprises a resistor housing, a ring resistor placed in the resistor housing, and a plurality of groups of external terminals welded to the ring resistor, and the liquid nitrogen temperature control component comprises a liquid nitrogen input and output system connected to the control box and used to control the internal temperature of the control box, and a control system for controlling the operation of the liquid nitrogen input and output system and detecting and controlling the internal temperature of the control box.

[0008] Preferably, the external terminals are evenly and equidistantly arranged on the annular resistor, and the upper parts protrude from the control box.

[0009] Preferably, the liquid nitrogen input and output system is connected to an air inlet pipe on one side of the control box, a first liquid nitrogen tank connected to the air inlet pipe, a liquid nitrogen air inlet solenoid valve arranged on the air inlet pipe for controlling whether it is connected, a second liquid nitrogen tank connected to the first liquid nitrogen tank through a pipeline, and the second liquid nitrogen tank is connected to the other side of the control box through an air outlet pipe, and a liquid nitrogen air outlet solenoid valve is placed on the air outlet pipe for controlling whether it is connected.

[0010] Preferably, the control system is a control device that can receive internal temperature and air pressure signals and can control the liquid nitrogen input and output system. The control device is provided with a display screen for displaying the real-time temperature, and a temperature controller is also provided on the side.

[0011] Preferably, a pressure gauge is externally connected to the control box.

[0012] Preferably, a temperature sensor is provided at the bottom of the adjustable resistance module.

[0013] The beneficial effects of the present invention are as follows: the technical solution can replace the entire resistor array without replacing each resistor individually, thereby reducing the difficulty and cost of maintenance; the liquid nitrogen temperature control component is used to quickly cool the interior, thereby accelerating cooling and controlling the resistor parameters, with high efficiency, greater stability, and high control accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of a liquid nitrogen array resistor with adjustable resistance according to the present invention;

[0015] Figure 2 A schematic diagram of an adjustable resistance module of a liquid nitrogen array resistor with adjustable resistance value according to the present invention;

[0016] In the figure: 1. control box; 2. adjustable resistor module; 3. liquid nitrogen temperature control component; 21. resistor housing; 22. ring resistor; 23. external terminal; 31. liquid nitrogen input and output system; 32. control system; 311. air inlet pipe; 312. first liquid nitrogen tank; 313. liquid nitrogen inlet solenoid valve; 314. pipeline; 315. second liquid nitrogen tank; 316. air outlet pipe; 317. liquid nitrogen outlet solenoid valve; 4. pressure gauge; 5. temperature sensor. DETAILED DESCRIPTION

[0017] Reference Figure 1 to Figure 2 , a liquid nitrogen array resistor with adjustable resistance, comprising a control box 1, an adjustable resistance module 2 placed in the control box, and a liquid nitrogen temperature control component 3 connected to the control box;

[0018] In order to ensure that the internal temperature does not lose and the internal air pressure is stable, the control box 1 is a sealed structure;

[0019] The adjustable resistor module 2 includes a resistor housing 21 , a ring resistor 22 placed in the resistor housing, and a plurality of groups of external terminals 23 welded to the ring resistor 22 ; the ring resistor is a resistor array.

[0020] In analog circuits, the calculation accuracy is often not determined by the resistance value of a single resistor itself, but by the ratio of multiple resistors. Arranged resistors can improve the accuracy and consistency in such circuits by ensuring the pairing of resistor pins. For resistors that need to be used in pairs, the entire row of resistors can provide better consistency.

[0021] The external terminals are evenly and equidistantly arranged on the annular resistor, and the upper part protrudes from the control box 1 for connection with the equipment; since the annular resistor 22 is arranged in an annular structure, the length, cross-sectional area, and temperature of the resistor are important factors affecting the resistance value. When the material and the cross-sectional area are the same, the longer the length of the conductor, the greater the resistance; when the material and the length are the same, the smaller the cross-sectional area of ​​the conductor, the greater the resistance. Therefore, the external terminals placed at different positions of the annular resistor have different resistances, and the external terminals placed at the rear have larger resistance values. Therefore, the external terminals at different positions can be connected according to the required resistance value requirements; this is suitable for different environments and different products.

[0022] The use of arrayed resistors in ring resistors can simplify circuit design, reduce the number of resistors and connecting wires, and reduce the complexity of circuit design; the centralized packaging form of arrayed resistors reduces the connection points between resistors, thereby reducing the failure rate caused by poor connection and improving the reliability and stability of the circuit; the entire array of resistors can be replaced without replacing each resistor individually, reducing the difficulty and cost of maintenance.

[0023] Since temperature is also one of the factors that affect resistance, for most conductors, the higher the temperature, the greater the resistance, such as metals; for a few conductors, the higher the temperature, the smaller the resistance, such as carbon, a liquid nitrogen temperature control component 3 capable of controlling the ambient temperature of the entire adjustable resistance module 2 is provided, and in order to prevent the adjustable resistance module 2 from being affected by external environmental factors, the adjustable resistance module 2 is provided in the control box 1, thereby ensuring that it will no longer be affected by the external environment;

[0024] The liquid nitrogen temperature control assembly 3 includes a liquid nitrogen input and output system 31 connected to the control box 1 and used to control the internal temperature of the control box 1, and a control system 32 for controlling the operation of the liquid nitrogen input and output system 31 and detecting and controlling the internal temperature of the control box 1;

[0025] The liquid nitrogen input and output system 31 includes an air inlet pipe 311 connected to one side of the control box 1, a first liquid nitrogen tank 312 connected to the air inlet pipe, a liquid nitrogen inlet solenoid valve 313 arranged on the air inlet pipe for controlling whether it is connected, a second liquid nitrogen tank 315 connected to the first liquid nitrogen tank through a pipeline 314, and the second liquid nitrogen tank 315 is connected to the other side of the control box 1 through an air outlet pipe 316, and a liquid nitrogen outlet solenoid valve 317 arranged on the air outlet pipe for controlling whether it is connected;

[0026] The first liquid nitrogen tank 312 and the second liquid nitrogen tank 315 are connected to each other for the convenience of storing liquid nitrogen. After being connected to each other, multiple groups of gas tank stocks can be used at the same time to save costs.

[0027] Specifically, the temperature is adjusted according to the required temperature. If the temperature of the resistor is too high and needs to be cooled down, the liquid nitrogen inlet solenoid valve is controlled to open and the liquid nitrogen outlet solenoid valve 317 is closed, and the liquid nitrogen enters the control box to cool down the inside and the resistor at the same time. If the temperature of the resistor is too low and needs to be heated up quickly, the liquid nitrogen inlet solenoid valve is closed and the liquid nitrogen outlet solenoid valve is opened to discharge the excess liquid nitrogen inside, thereby cooperating with the heating;

[0028] The liquid nitrogen tanks used for cooling are not limited to two groups, and can be added or reduced according to actual usage. They can be added or reduced in real time according to the size of the control box to meet the use of the internal space and ensure the cooling or heating effect.

[0029] The control system 32 is a control device that can receive internal temperature and air pressure signals and can control the liquid nitrogen input and output system 31; the control device is provided with a display screen to display the real-time temperature, and a thermostat is also provided on the side, and the upper and lower limits of the temperature are set by the thermostat to control the liquid nitrogen input and output system 31. The resistance parameters are greatly affected by high temperature, and it is a heating element. By designing the product to cool with circulating liquid nitrogen, the overall heat dissipation performance will be faster than that of traditional water-cooled resistance and oil temperature cooling.

[0030] Liquid nitrogen cooling, controlled by a circulation valve, can reduce the temperature by 7-15°C per minute, which gives liquid nitrogen a significant advantage in the field of rapid cooling. In contrast, oil temperature cooling is slower and usually takes several hours or even longer to complete.

[0031] In order to prevent the operation of the liquid nitrogen temperature control component 3 from causing excessive or low internal air pressure, a barometer 4 is also connected to the control box 1, and the internal air pressure value is detected in real time by the barometer 4 to ensure safety in use;

[0032] In order to detect the temperature of the adjustable resistance module in real time, a temperature sensor 5 is provided at the bottom of the adjustable resistance module; after the temperature sensor senses the temperature, the data is transmitted to the control system 32 in real time, and after the control system receives feedback, it sends a signal to indicate whether the liquid nitrogen input and output system 31 needs to work.

[0033] The benefits of the present invention are that the technical solution can replace the entire resistor array without replacing each resistor individually, reducing the difficulty and cost of maintenance; the liquid nitrogen temperature control component is used to quickly cool the interior, thereby accelerating cooling and controlling the resistor parameters, with high efficiency, greater stability, and high control accuracy.

[0034] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A liquid nitrogen array resistor with adjustable resistance, characterized in that: It includes a control box, an adjustable resistor module placed in the control box, and a liquid nitrogen temperature control component connected to the control box. The adjustable resistor module includes a resistor shell, a ring resistor placed in the resistor shell, and a plurality of groups of external terminals welded on the ring resistor. The liquid nitrogen temperature control component includes a liquid nitrogen input and output system connected to the control box and used to control the internal temperature of the control box, and a control system for controlling the operation of the liquid nitrogen input and output system and detecting and controlling the internal temperature of the control box.

2. The liquid nitrogen array resistor with adjustable resistance according to claim 1, characterized in that: The external terminals are evenly and equidistantly arranged on the annular resistor, and upper portions of the external terminals protrude from the control box.

3. The liquid nitrogen array resistor with adjustable resistance according to claim 1, characterized in that: The liquid nitrogen input and output system includes an air inlet pipe connected to one side of the control box, a first liquid nitrogen tank connected to the air inlet pipe, a liquid nitrogen air inlet solenoid valve arranged on the air inlet pipe and used to control whether ventilation is performed, a second liquid nitrogen tank connected to the first liquid nitrogen tank through a pipeline, the second liquid nitrogen tank is connected to the other side of the control box through an air outlet pipe, and a liquid nitrogen air outlet solenoid valve is placed on the air outlet pipe to control whether it is connected.

4. The liquid nitrogen array resistor with adjustable resistance according to claim 1, characterized in that: The control system is a control device that can receive internal temperature and air pressure signals and can control the liquid nitrogen input and output system. The control device is provided with a display screen for displaying real-time temperature, and a temperature controller is also provided on the side for controlling and adjusting the temperature inside the control box.

5. The liquid nitrogen array resistor with adjustable resistance according to claim 1, characterized in that: The control box is also externally connected to a barometer.

6. The liquid nitrogen array resistor with adjustable resistance according to claim 1, characterized in that: A temperature sensor is arranged at the bottom of the adjustable resistance module.

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