Mineral insulation heating element cold and hot integrated connector assembly
A mineral insulation heating and element technology, applied in the shape of heating element, ohmic resistance heating parts, ohmic resistance waterproof/airtight and other directions, can solve the problems of treating the symptoms but not the root cause, inclusions, maintenance difficulties, etc., to optimize the joint structure, solve the Gradual drop in insulation, effect of reducing the number of welds
Pending Publication Date: 2021-08-13
久盛电气股份有限公司
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Problems solved by technology
The on-site treatment method is often to use fire to bake the joints to drive away the moisture, thereby increasing the insulation resistance. However, this method only treats the symptoms, not the root cause. decrease, the leakage trip phenomenon will occur again at the next start-up
In the case of explosion-proof occasions, it cannot be fired and maintenance is difficult
Through raw material testing, welding process adjustment and other methods, during the joint assembly process, there is inevitably magnesium oxide powder between the gaps of the parts, resulting in the inclusion of magnesium oxide powder between the welds after the argon arc welding is melted, invisible leaks appear, and the insulation resistance value is reduced. decreasing gradually
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[0014] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0015] It should be noted that when a component is said to be "fixed" to another component, it can be directly on the other component or there can also be an intervening component. When a component is said to be "connected" to another component, it may be directly connected to the other component or there may be intervening components at the same time. When a component is said to be "set on" another component, it may be set directly on the other component or t...
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The invention discloses a mineral insulation heating element cold and hot integrated connector assembly which comprises a stainless steel sleeve. A cold end cable is arranged in the stainless steel sleeve, a left plug and a right plug are fixed to the two ends of the stainless steel sleeve respectively, a metal heating wire and a high-temperature wire are inserted into the left plug and the right plug in a sleeved mode respectively, and two ends of thecold end cable are provided with a left cold end wire core and a right cold end wire core. The beneficial effects are that by optimizing the original product connector structure, reducing the number of argon arc welding seams, and adding a silver brazing as the secondary sealing and protection effect of the connector, the problem that the insulation of the mineral insulation heating element is gradually reduced is effectively solved.
Description
Technical field: [0001] The invention relates to the technical field of joint assemblies of mineral insulated heating elements, in particular to a cold and hot integrated joint assembly of mineral insulated heating elements. Background technique: [0002] At present, from the application point of view of heating elements, there has always been a problem that the insulation resistance value gradually decreases. Once the insulation resistance value falls within the standard leakage range, the electrical system will trip and fail to power on. The on-site treatment method is often to use fire to bake the joints to drive away the moisture, thereby increasing the insulation resistance. However, this method only treats the symptoms, not the root cause. If it is lowered, leakage tripping will occur again at the next startup. In the case of explosion-proof occasions, it cannot be fired and maintenance is difficult. Through raw material testing, welding process adjustment and other ...
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IPC IPC(8): H05B3/42H05B3/02H05B3/04
CPCH05B3/02H05B3/04H05B3/42
Inventor 朱正杨徐少杰
Owner 久盛电气股份有限公司