Nuclear magnetic resonance analyzer probe silver-plated coil annealing device
By using vacuum and self-heating technology in the silver-plated coil of the industrial online nuclear magnetic resonance analyzer probe, the coil resistance is used to generate heat, and the oxidation and pollution of silver-plated conductors is solved, achieving zero-pollution, low-cost, and low-energy consumption annealing effect, improving the The safety and sustainability of the device.
Patent Information
- Application Number
- CN202323123922.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-11-20
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2033-11-20
AI Technical Summary
The existing annealing methods do not protect the silver-plated wires, are prone to oxidation, and have problems such as pollution, high risk, high gas consumption and cumbersome operation, especially in the annealing process of the silver-plated coil of the probe of the industrial online nuclear magnetic resonance analyzer.
Vacuum and self-heating technology are adopted to generate heat by using the resistance of silver-plated coils to heat the coils in a vacuum environment to avoid oxidation, and annealing is achieved through a temperature control system to form a low-cost and low-pollution annealing device.
It achieves zero pollution, low cost and low energy consumption annealing effect, extends the device life, reduces operating risk, and all materials can be reused.
Smart Images
Figure CN222274635U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an annealing device, in particular to an annealing device applied to a silver-plated coil of a probe of an industrial online nuclear magnetic resonance analyzer. Background Art
[0002] The main body of the industrial online nuclear magnetic resonance analyzer probe is made of ceramic tube, copper tube and titanium tube welded together. Due to the special size and structure of the probe, the coil cannot be prefabricated and then assembled. We can only wind the coil on the probe tube after welding is completed.
[0003] Silver-plated copper wire has good plasticity but also has a certain toughness. After the coil is wound, the coil will rebound for a long time, which seriously affects the stability of the Q value. This requires that the coil must be annealed after winding, and the silver-plated copper wire must not be oxidized.
[0004] There are many annealing methods, such as electric furnace heating, steam heating, electromagnetic heating, oven heating, etc. Although the purpose of annealing can be achieved, it does not protect the silver-plated wire and will cause the silver-plated wire to oxidize rapidly after high temperature. The oil bath annealing method can be used to anneal the probe coil, but a large amount of smoke will be emitted during use, causing serious air pollution. After heating once, the oil product will seriously deteriorate and need to be cooled and replaced. In addition, gasoline needs to be used to clean the oil stains on the probe after annealing. The operation is very cumbersome and the risk factor is extremely high. The use of inert gas can protect the probe coil, but due to the size characteristics of the probe, a large furnace volume is required, the gas consumption is large, and there is a risk of suffocation, requiring a special site or protective facilities.
[0005] In view of the above problems, an annealing device for the silver-plated coil of the industrial online nuclear magnetic resonance analyzer probe is proposed here. It adopts vacuum and self-heating technology to achieve the advantages of true zero pollution, low cost, less maintenance workload and long service life. Summary of the invention
[0006] The annealing device of the silver-plated coil of the online nuclear magnetic resonance analyzer probe makes full use of the resistance of the coil, uses the coil as a load, and heats itself when current passes through it. The vacuum environment prevents the silver-plated wire from contacting oxygen and causing oxidation reaction, thereby achieving the function of non-oxidation and completing annealing.
[0007] Since the probe is in a vacuum environment, the path of radiation heat transfer is weakened, the heat emitted from the coil to the external object is reduced, and the heating power is greatly reduced. There is no pollutant emission or waste during use, all materials can be reused, and the operation risk is extremely low. It has achieved true zero pollution and low cost, and energy conservation and emission reduction start from small things.
[0008] The technical solution adopted by the utility model is:
[0009] The annealing device of the silver-plated coil of the online nuclear magnetic resonance analyzer probe is mainly composed of a vacuum barrel, a heating control system and a vacuum pump. The heating control system consists of a temperature sensor, a temperature controller and a transformer. The vacuum pump is used to extract the air in the vacuum barrel, and the lead-in terminal is used to connect the inner and outer wires of the vacuum barrel to achieve the effect of insulation and sealing. When the silver-plated coil is connected to the wire and connected to a 1V voltage, there will be a current of about 200A, and a heating power of 140W will be generated on the silver-plated coil. The temperature control system will adjust the output voltage of the transformer to meet the temperature required for coil annealing. BRIEF DESCRIPTION OF THE DRAWINGS
[0010] Figure 1 is a schematic diagram of the structure of the utility model
[0011] Notes:
[0012] 1. Lead-in terminal 2. Vacuum barrel 3. Heating wire 4, 8 Aluminum alloy holder 5. Probe ceramic tube 6. Probe silver-plated coil 7.
[0013] Temperature sensor 9. Probe copper tube 10. Probe connecting tube 11. Fixed bracket 12. Vacuum tank cover 13. Bolt 14. Pressure gauge
[0014] 15. Vacuum pump 16. Temperature controller 17. Transformer DETAILED DESCRIPTION
[0015] The working principle of the utility model is specifically described in conjunction with the accompanying drawings; the annealing device of the silver-plated coil of the online nuclear magnetic resonance analyzer probe mainly consists of a vacuum barrel (2), a heating control system and a vacuum pump (15). The heating control system consists of a temperature sensor (7), a temperature controller (16) and a transformer (17). The vacuum pump (15) is used to extract the air in the vacuum barrel (2), and the introduction terminal (1) is used to connect the inner and outer wires of the vacuum barrel to achieve the effect of insulation and sealing.
[0016] After the silver-plated coil (6) is wound on the probe ceramic tube (5), use the aluminum alloy clamp (4, 8) to clamp the copper tube (8) at one end, and tighten and fix the silver-plated coil (6) at the other end. Connect the heating wire (3) to the aluminum alloy clamp (4, 8), place the probe on the fixed bracket (11) in the vacuum barrel (2) and fix it. Put the temperature sensor (7) close to the silver-plated coil (6) of the probe, and tighten the vacuum barrel cover (12) with bolts (13) to ensure the sealing. Turn on the power of the vacuum pump (15). When the pressure gauge (14) shows less than 30Pa, run it for another 15 minutes and then power on the heating control system. According to the resistivity of copper, it is 0.01724+(t-20)×0.004(Ω•mm2 / m), the resistance value of the silver-plated coil (6) of the online nuclear magnetic resonance analyzer probe is about 0.0035Ω, 25mm 2 The resistance value of the heating wire (3) of about 2 meters is about 0.0014Ω. The transformer (17) outputs a voltage of 1V, which generates a current of about 200A, which is directly applied to the silver-plated copper coil (6) of the probe. The heat generated by the current can quickly heat the silver-plated copper coil (6) to the set temperature. The temperature sensor (7) feeds back the detected signal to the temperature controller (16), and the temperature controller (16) adjusts the output voltage of the transformer (17) to form a closed-loop control of the heating system. Since the vacuum barrel (2) where the silver-plated coil (6) is located is always in a vacuum state during the entire annealing process, the silver-plated coil of the probe is protected from oxidation.
Claims
1. A device for annealing a silver-plated coil of a nuclear magnetic resonance analyzer probe, characterized in that: The device mainly consists of a vacuum barrel (2), a heating control system and a vacuum pump (15). The heating control system consists of a temperature sensor (7), a temperature controller (16) and a transformer (17). The vacuum pump (15) is used to extract the air in the vacuum barrel (2). The introduction terminal (1) is used to connect the inner and outer wires of the vacuum barrel to achieve the effect of insulation and sealing.
2. The annealing device for the silver-plated coil of the nuclear magnetic resonance analyzer probe according to claim 1, characterized in that: The current generated by the transformer (17) is used to directly heat the silver-plated coil (6) of the probe.
3. The annealing device for the silver-plated coil of the nuclear magnetic resonance analyzer probe according to claim 1, characterized in that: During the entire annealing process, the silver-plated coil (6) is always in a vacuum barrel (2) in a vacuum state.