阅读说明：本技术 一种电气一次设备接头及其发热处理方法 (Electric primary equipment joint and heating processing method thereof ) 是由 李谦 赵耀洪 吕旺燕 于 2020-12-03 设计创作，主要内容包括：本申请公开了一种电气一次设备接头及其发热处理方法,处理方法包括：对接头配合的接触面进行表面处理；在接头配合的接触面之间铺设银层；紧固所述接头；采用自愈合复合脂密封包覆整个所述接头。通过银层来替代传统的电力脂工艺,利用银材料的柔软特性,使得接触面之间能够实现良好的面接触,较于传统的电力脂工艺,能够改善接触面接触性能,最大限度地降低接触电阻。而接头整体再包覆自愈合复合脂,能够使得接头整体具有良好的密封性,极大减轻外界水汽和紫外照射等因素对于复合脂性能的影响。能够有效地解决传统电气一次设备接头发热处理方法的长效性不足而导致接头异常发热的问题,避免频繁反复的检修,降低运维成本,提高电网安全运行水平。(The application discloses electric primary equipment joint and a heating processing method thereof, wherein the processing method comprises the following steps: carrying out surface treatment on a contact surface matched with the joint; laying a silver layer between contact surfaces matched with the connectors; fastening the joint; and sealing and coating the whole joint by adopting self-healing compound grease. The traditional power grease process is replaced by the silver layer, and the contact surfaces can be in good surface contact by using the soft characteristic of the silver material, so that the contact performance of the contact surfaces can be improved and the contact resistance can be reduced to the maximum extent compared with the traditional power grease process. And the whole self-healing composite grease is coated on the whole joint, so that the whole joint has good sealing performance, and the influence of factors such as external water vapor, ultraviolet irradiation and the like on the performance of the composite grease is greatly reduced. The problem that the joint is abnormally heated due to the fact that the long-term effect of the traditional electric primary equipment joint heating processing method is insufficient can be effectively solved, frequent and repeated overhauling is avoided, operation and maintenance cost is reduced, and the safe operation level of a power grid is improved.)

1. A method for processing heating of a joint of electrical primary equipment is characterized by comprising the following steps:

carrying out surface treatment on a contact surface matched with the joint;

a silver layer is laid between the contact surfaces matched with the connectors;

fastening the joint;

and sealing and coating the whole joint by adopting self-healing compound grease.

2. A method for heat treatment of electrical primary equipment connectors according to claim 1, characterised in that the surface treatment comprises in particular a sanding treatment and a cleaning treatment.

3. A method for heat treatment of a joint of an electrical primary equipment according to claim 1, wherein the joint has two contact surfaces that mate with each other;

the silver layer paved on the contact surface matched with the connector specifically comprises the following steps:

silver layers are respectively paved on two contact surfaces of the connectors which are mutually matched.

4. The method for treating the joint heat of the electrical primary equipment according to claim 1, wherein the silver layer is applied by a brush silver plating process.

5. The method for processing heating of a joint of electrical primary equipment according to claim 1, wherein the self-healing compound grease is an ultraviolet shielding compound grease having a self-healing property.

6. An electrical primary equipment connector prepared by the method for treating heat generation of the electrical primary equipment connector according to claim 1, comprising: the self-healing composite grease sealing sleeve is arranged on the joint;

a silver layer is laid between the contact surfaces matched with the connectors;

the fastener is detachably arranged on the joint and used for fastening the joint;

and the self-healing composite grease sealing sleeve is hermetically coated outside the joint.

7. An electrical primary equipment connector according to claim 6, wherein said connector is comprised of two sub-connectors;

the two sub-joints are respectively provided with a matched contact surface;

and the contact surfaces of the two sub-joints are respectively paved with the silver layers.

8. An electrical primary equipment joint according to claim 7 wherein the fastener comprises a plurality of bolts and a plurality of nuts;

the rod sections of the bolts sequentially penetrate through the two sub-joints;

the nuts are fixedly sleeved on the rod section of the bolt one by one and respectively form clamping fixation with the head of the bolt to the two sub-joints.

9. An electrical primary equipment joint according to claim 7 wherein the self-healing compound grease-sealed boot is specifically an ultraviolet shielding compound grease-sealed boot with self-healing properties.

Technical Field

The application relates to the technical field of joints of power transmission and transformation equipment, in particular to an electric primary equipment joint and a heating processing method thereof.

Background

The current-carrying conductor connectors of the primary equipment of the power transmission and transformation are extremely large in number in a power grid, the connectors generate heat abnormally during operation, the connectors are common and main defect types of a power system, the types account for more than 20% of common defects, emergency defects account for 40%, and particularly in power grid load peak seasons such as the rich summer season.

The heating source of the equipment connector is that the contact resistance is increased, when a large load current flows in the operation, a hot spot is easily formed, the heating aggravates the oxidation of the surface of the conductor, the contact resistance is increased, the temperature of a contact surface is increased, the surface of the connecting hardware fitting can be obviously burnt, deformed or even fused in serious conditions, and great potential safety hazards are brought to the operation of the equipment.

The heating phenomenon of the contact surface of the primary equipment is mainly related to the load form, the contact condition and the environmental heat dissipation condition, the heating reason mainly comprises factors such as electrochemical oxidation, joint design, installation process and quality, material materials, power grease and the like, so that the contact resistance is increased, and the heating is serious when the load is increased.

The method for treating the abnormal heating defect of the joint of the electrical primary equipment basically adopts a power failure maintenance mode, takes fixed contact parts (fixed joints) such as a wiring palm and the like as an example, and the conventional method for treating the abnormal heating of the joint mainly starts from the root of the abnormal heating, namely contact resistance increase, improves the flatness of a contact surface by polishing and flattening the surface of the joint in practice, cleans the surface, coats power grease, crimps fastening screws and other measures so as to improve the flow conductivity, prevent air, water and impurities from entering and eliminate the hidden trouble of large resistance change of a connecting part due to electric shock.

However, from the operation practice, the traditional method for treating the abnormal heating defect of the joint of the electrical primary equipment is simple and extensive, lacks pertinence to the sealing and corrosion prevention problems of the joint, has the common characteristics of insufficient stability and long-term effectiveness, and has the problems of aging failure, so that the heating defect recurs, and the effect of preventing and treating the heating defect is seriously influenced.

Disclosure of Invention

In view of this, a first object of the present application is to provide a method for processing heat generation of a joint of an electrical primary device, which can effectively solve the problem of abnormal heat generation of the joint due to insufficient stability and long-term effectiveness of a conventional method for processing heat generation of a joint of an electrical primary device, avoid frequent and repeated overhaul, reduce operation and maintenance costs, and improve a safe operation level of a power grid.

A second object of the present application is to provide an electrical primary equipment connector prepared using the method of heat generating treatment of an electrical primary equipment connector.

In order to achieve the technical purpose, the application provides a method for processing the heating of the joint of the electrical primary equipment, which comprises the following steps:

carrying out surface treatment on a contact surface matched with the joint;

a silver layer is laid between the contact surfaces matched with the connectors;

fastening the joint;

and sealing and coating the whole joint by adopting self-healing compound grease.

Further, the surface treatment specifically comprises a polishing and flattening treatment and a cleaning treatment.

Further, the joint has two contact surfaces which are matched with each other;

the silver layer paved on the contact surface matched with the connector specifically comprises the following steps:

silver layers are respectively paved on two contact surfaces of the connectors which are mutually matched.

Further, the laying process of the silver layer is specifically an electric brush silver plating process.

Further, the self-healing compound grease is ultraviolet shielding compound grease with self-healing performance.

An electrical primary equipment joint prepared by applying the heating processing method of the electrical primary equipment joint comprises the following steps: the self-healing composite grease sealing sleeve is arranged on the joint;

a silver layer is laid between the contact surfaces matched with the connectors;

the fastener is detachably arranged on the joint and used for fastening the joint;

and the self-healing composite grease sealing sleeve is hermetically coated outside the joint.

Further, the joint is composed of two sub-joints;

the two sub-joints are respectively provided with a matched contact surface;

and the contact surfaces of the two sub-joints are respectively paved with the silver layers.

Further, the fastener includes a plurality of bolts and a plurality of nuts;

the rod sections of the bolts sequentially penetrate through the two sub-joints;

the nuts are fixedly sleeved on the rod section of the bolt one by one and respectively form clamping fixation with the head of the bolt to the two sub-joints.

Further, the self-healing compound grease sealing sleeve is an ultraviolet shielding compound grease sealing sleeve with self-healing performance.

According to the technical scheme, the heating treatment method for the joint of the primary electrical equipment is characterized in that the silver layer is laid between the contact surfaces matched with the joint, the joint is fastened, and finally the self-healing compound grease is used for sealing and coating the whole structure to complete heating treatment of joint connection. The traditional power grease coating process is replaced by the silver layer, and the good surface contact between the contact surfaces can be realized by utilizing the soft characteristic of the silver material, so that the contact performance of the contact surfaces can be improved to the maximum extent and the contact resistance can be reduced compared with the traditional power grease coating process. And the whole self-healing compound fat of cladding again of joint can make the whole leakproofness that has of joint, greatly reduces the influence of factors such as external steam and ultraviolet irradiation to compound fat performance, utilizes good performances such as self-healing and ultraviolet shielding of self-healing compound fat simultaneously, effectively reduces ageing and the solidification problem that the compound fat of self-healing produced in the operation, further promotes the stability and the long-term effect that the joint generates heat and handles. By the processing method, the problem that the joint is abnormally heated due to insufficient long-term effect of the conventional electric primary equipment joint heating processing method can be effectively solved, frequent and repeated overhaul is avoided, operation and maintenance cost is reduced, and the safe operation level of a power grid is improved.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

FIG. 1 is a schematic flow chart diagram illustrating an embodiment of a method for processing heat generated by a connector of an electrical primary device provided herein;

FIG. 2 is a schematic view of a configuration of mating two sub-connectors of a connector for electrical primary equipment provided herein;

FIG. 3 is a schematic structural view of a connector of an electrical primary appliance provided herein;

in the figure: 100. a sub-junction; 101. a contact surface; 102. a bolt; 103. a nut; 104. and (5) sealing the self-healing compound grease.

Detailed Description

The technical solutions of the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application without any creative effort belong to the protection scope of the embodiments in the present application.

In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing the embodiments of the present application and simplifying the description, but do not indicate or imply that the referred devices or elements must have specific orientations, be configured in specific orientations, and operate, and thus, should not be construed as limiting the embodiments of the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should be noted that the terms "mounted," "connected," and "connected" are used broadly and are defined as, for example, a fixed connection, an exchangeable connection, an integrated connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, and a communication between two elements, unless otherwise explicitly stated or limited. Specific meanings of the above terms in the embodiments of the present application can be understood in specific cases by those of ordinary skill in the art.

The applicant has found that poor contact of the contact surfaces and oxidation of water vapour are two root causes in the stability and long-term effectiveness of the heat treatment effect of the primary equipment joints, and the use of power grease is problematic.

First, the contact surface has a problem of poor contact.

(1) The electrical connection is generally in a surface-to-surface contact mode, no matter how the contact surface of the equipment is processed, no matter how large the pressing force is adopted, microscopically, the electrical connection is inevitably uneven and always has a gap, so that microscopically, the electrical connection is actually in point contact, the effective contact area is actually only a small part of the nominal contact area, and the contact resistance of the electrical equipment connection position is increased.

(2) The defect elimination and overhaul have the condition of no arrival. If the contact surface is not polished or not polished in place, the surface oxide film is not cleaned, the contact surface is not flat, impurities remain, the contact is not uniform, and point contact is formed; the power grease is not uniformly or excessively thick; the screw is not tight, the pressing force is not enough, or the fastening pressure is not uniform, so that a certain point is good in contact and is not in surface contact, and the contact resistance of a contact surface is large.

(3) Even if a measure for improving the contact surface is adopted, such as mounting a copper-aluminum transition plate, a plurality of places on the contact surface are still point contacts in a microscopic view, and the contact resistance is still very large.

Therefore, the above conventional processing methods cannot meet the requirement of long-term stable operation at the connection of the electrical primary equipment.

Secondly, the problem of electrochemical oxidation caused by factors such as water vapor exists objectively.

(1) In actual operation, electrical connection is mostly leaked outdoors, and the electrical connection is corroded by severe factors such as atmosphere, moisture, salt mist, dust, mold, fretting wear and connection metal oxidation to form a non-conductive corrosion product, so that contact resistance is further increased due to blackening and corrosion of contact parts.

(2) If the device is operated for a long time, an oxidation film is gradually formed on the contact surface of the device, for example, a hard high-resistance alumina film is formed on the surfaces of an aluminum lead and a joint, so that the contact resistance of the surface is increased, the joint of the device generates heat, and the heat generation of the joint accelerates the oxidation and vicious circle of the surface of the device.

(3) When the lapping surface is made of different metal materials, such as copper and aluminum, butt joint, due to different standard potentials, electrolyte is formed by moisture, oxide and the like on the contact surface, oxidation-reduction reaction is carried out on the copper-aluminum contact surface, the generated electrochemical corrosion has larger effect than common oxidation destruction, and the oxidation and corrosion of the contact surface are accelerated.

(4) When a large current flows, a large amount of heat is generated at the contact part due to overlarge contact resistance, the contact resistance is increased due to the heat, and in addition, the material is ablated and oxidized, the hollow of the contact part is uneven due to the processes of large current impact, arcing and the like, so that the contact resistance is increased, and finally, the connection part of the electrical equipment is overheated or even serious accidents are caused due to vicious circle.

Again, the use of power grease presents a number of problems.

(1) The contact surface that equipment connects no matter how big crimping power that adopts always has the space, and the on-the-spot mode of adopting to paint electric power fat more fills uneven pit part space, plays the isolation simultaneously, prevents into water to and prevent the infiltration between the different metals, but the contact surface is uneven and has influenced the result of use of electric power fat.

(2) The power grease has the main functions of sealing, heat conduction and electricity conduction, and is divided into conductive paste, conductive grease, vaseline, other composite grease and the like according to different application occasions, for example, the conductive paste is usually used for bare copper or bare aluminum, and has good effects on removing hot spots and heat dissipation; the conductive grease is thinner than the conductive paste, is coated thinly, has good effect and is volatile; vaseline is mostly used on the surface of silver plating or tin plating to form a non-conductive protective film, so that the formation of an oxide film on a contact surface is effectively prevented, waterproof, air-proof, antioxidant and antirust effects can be achieved, certain conductivity is sacrificed to replace the stability of performance, and in general, due to the lack of selection specifications of power grease on different occasions, the application effect difference is large.

(3) Electric power fat mainly comprises base oil, densifier and additive, at the uniform temperature, moisture, oxygen, under the influence of ultraviolet lamp factor, after running a period of time under the environment that generates heat that heavy current arouses, easy ageing sclerosis, the solidification blocking, the sclerosis that becomes black, drop even, lose sealedly, the heat conduction effect, produced small space, if not clear up, easy infiltration moisture, oxygen, air and dust, form the dirt, the aggravation oxidation, contact resistance grow on the contrary, cause the trouble of heating again, cause frequent maintenance.

The main reason for the aging of the power grease is that the traditional power grease is concentrated in the modification of electric conduction and heat conduction, and does not consider the key factors of aging caused by outdoor ultraviolet rays, moisture, damp heat and the like, so that the long-acting performance of the power grease is poor, and in general, the problem of poor contact of a primary equipment joint cannot be well solved by the traditional power grease.

In order to protect the long-term stable state of the surface of the joint, the ultraviolet resistance and the hydrophobicity of the power grease need to be improved, so that the heat can be conducted in time under the conditions of heating caused by large current and severe external operating environment, the sealing effect of blocking moisture and air can be achieved, and the aging resistance is improved.

On the other hand, the defect elimination effect of the heating defect of the joint is evaluated through the temperature obtained by the infrared temperature measurement and the infrared thermal imaging detection in operation, due to the lack of the defect elimination effect evaluation method and index, after the joint is operated again for a period of time, the contact resistance is increased due to the aging and the failure of electric power grease, the long-term effectiveness of defect elimination measures is poor, the problem of frequent and repeated maintenance is common, the operation risk of a power grid is increased, meanwhile, the infrared temperature measurement and the infrared thermal imaging detection work also become the basic work of the operation and maintenance of power transmission and transformation equipment, and the maintenance workload is large.

In conclusion, the treatment means for the abnormal heating defect of the joint of the primary electrical equipment has the common characteristics of insufficient stability and long-term effectiveness, the heating defect recurs due to the aging failure problem, the effect of preventing and treating the heating defect is seriously influenced, and the overheating defect and the defect elimination work of the joint troubles basic units for a long time. In order to solve the above problems, an embodiment of the present application discloses a method for processing heat generation of a joint of an electrical primary device.

Referring to fig. 1, a method for processing heat generation of a connector of an electrical primary device provided in an embodiment of the present application includes:

and S1, performing surface treatment on the contact surface matched with the joint. It should be noted that the surface treatment may specifically include a polishing process and a surface cleaning process for subsequent silver layer deposition. The polishing, leveling and surface cleaning methods may refer to the conventional polishing, leveling and surface cleaning method flow, and are not described in detail.

And S2, laying a silver layer between the contact surfaces of the connectors which are matched with each other. The silver layer is used for replacing the traditional power grease coating process, and the silver layer has a certain thickness and utilizes the soft characteristic of a silver material, so that good surface contact between contact surfaces can be realized. The arrangement of the silver layer is convenient for the compression joint of the joint, and the copper-aluminum transition piece is omitted. In the case of a connector having two contact surfaces, a silver layer should be laid on each contact surface to further improve the surface contact effect of the contact surfaces.

The silver layer laying process can be a brush silver plating process, and a silver layer is coated on the two contact surfaces after surface treatment. When the electric brush is used for plating silver, the surface of a brush plating layer is required to be continuous and complete, the thickness, the adhesive force (bonding strength) and the wear resistance of the plating layer meet the operation requirement, and no visible defects such as bubbles, sand holes, cracks or plating leakage exist; the burnt surface is repaired from pit repair to brush plating silver repair. The brush plating is one of surface manufacture and remanufacture technologies, the basic principle of the brush plating is the same as that of electroplating, and the brush plating technology is based on the electrolysis principle and is a technology for quickly depositing metal on the surface of a part to form a plating layer. Because the brush plating technology has the characteristics of high wear resistance and fatigue strength of the repaired surface, high deposition speed of metal ions, high repair efficiency, low price of plating solution and brush plating equipment and the like, the brush plating technology is widely applied to various fields of national economy, the thickness, speed and performance of the brush plating technology are continuously improved along with the development of the technology, the application range is wider and wider, and the brush plating technology is primarily applied to silver plating of contact surfaces of movable parts such as an isolation switch and the like of a power system and is not specifically described in detail.

And S3, fastening the joint. It should be noted that the joint can be fastened through a corresponding fastening component on the joint, so that the silver layer can be extruded between the contact surfaces matched with the joint, a tighter composite connection is realized, the silver layer can be extruded to completely cover the contact surfaces, and it is ensured that no point contact but good surface contact is present between the contact surfaces.

And S4, sealing and coating the whole joint by adopting self-healing compound grease. The self-healing compound grease is used for sealing and coating the whole joint to seal the periphery of the joint, and compared with the traditional treatment method that the power grease is only coated on a contact surface, the self-healing compound grease can better form a protective layer on the whole surface of the joint, has excellent sealing performance, can isolate the infiltration of air, moisture and dust to the maximum extent, and plays a good role in sealing and protecting the joint and the contact surface; meanwhile, by utilizing the excellent performances of the compound grease, such as self-healing performance, ultraviolet shielding and the like, the influence of external water vapor, ultraviolet irradiation and other factors on the performance of the sealing grease is greatly reduced, the aging and curing problems generated in the operation of the self-healing compound grease are effectively reduced, and the stability and the long-acting performance of the heating treatment of the joint are further improved. The sealing mode can be that the mode cladding joint that adopts paints realizes sealedly, requires evenly to paint when paining, can communicate fastening component surface and paint together, and thickness satisfies predetermineeing the requirement in addition, and does not have visible defect, like bubble, space etc..

The self-healing composite grease is specifically an ultraviolet shielding composite grease with self-healing performance, and can be prepared by screening inorganic materials and self-healing base materials with ultraviolet shielding performance, and combining base oil and a thickening agent. Considering a plurality of factors such as combination of base oil, heat-conducting filler, anti-aging agent, inorganic-organic composite interface and the like, and electrical aging of the material in a high-current environment, screening an inorganic material with high-conductivity self-healing material and ultraviolet shielding, searching and modifying composite grease base oil suitable for practical application, ensuring low evaporation loss and keeping stable dropping point; the proportion of each component in the compound grease is optimized, the compound grease with excellent aging resistance in a heating environment caused by large current is prepared, and good heat conductivity and sealing performance are realized. The ultraviolet shielding efficiency can be prepared to be more than 85 percent, the hydrophobic contact angle is more than 120 degrees, so that the prepared self-healing composite grease is excellent in salt mist resistance, ultraviolet resistance, moisture resistance, humidity resistance and the like. The anti-ultraviolet property and the hydrophobicity are integrally improved, and the long-term effect of ultraviolet rays and moisture can be effectively resisted. The problem of traditional electric power fat only consider electrically conductive heat conduction modified, and anti ultraviolet and moisture ageing resistance is relatively poor, and operating stability and long-term stability are not enough pain point can be solved, avoid ageing at long-time operation in-process, the solidification blocking, the sclerosis of becoming black, drop even, produce small space, steam gets into and leads to the contact resistance rebound.

As shown in fig. 2 and fig. 3, the present application further provides an electrical primary device connector prepared by applying the heat treatment method of the electrical primary device connector according to the above embodiment, including: joints, fasteners, and self-healing compound grease seal cartridges 104; silver layers (not shown) are laid between the contact surfaces 101 matched with the connectors; the fastener is detachably arranged on the joint and used for fastening the joint; the self-healing compound grease seal 104 is hermetically wrapped outside the joint. Through the step S2 in the above embodiment, a silver layer is formed between the mating contact surfaces 101 of the joint, the joint is fastened through the step S3 in the above embodiment, and finally, through the step S4 in the above embodiment, the self-healing compound grease is applied to the entire outer surface of the fastened joint, so that a structural layer, i.e., the self-healing compound grease sealing sleeve 104, is formed outside the joint.

Furthermore, the joints have different structural compositions, and the number of the corresponding contact surfaces 101 is also different, taking the example that the joint consists of two sub-joints 100; the two sub-joints 100 are respectively provided with a matched contact surface 101; silver layers are respectively laid on the contact surfaces 101 of the two sub-joints 100. The silver layer is laid on each contact surface 101, so that the surface contact effect of the contact surfaces 101 can be further improved. Of course, the silver layer may be disposed on only one of the contact surfaces 101, and is not particularly limited. The silver layer may be laid by using an electric brush silver plating method, which may specifically refer to step S2 in the foregoing embodiment, which is not described in detail.

Further, the fastener may include a plurality of bolts 102 and a plurality of nuts 103; the rod sections of the bolts 102 sequentially penetrate through the two sub-joints 100; the nuts 103 are fixedly sleeved on the rod sections of the bolts 102 one by one, and form clamping fixation with the heads of the bolts 102 to the two sub-joints 100 respectively.

Further, the self-healing compound grease sealing sleeve 104 is specifically a self-healing ultraviolet shielding compound grease sealing sleeve, and has good thermal conductivity and sealing performance, and excellent salt spray resistance, ultraviolet resistance, moisture resistance, damp heat resistance and the like. The anti-ultraviolet property and the hydrophobicity are integrally improved, and the long-term effect of ultraviolet rays and moisture can be effectively resisted. The problem that only the electricity and heat conduction modification is considered in the traditional power grease, the ultraviolet resistance and the moisture aging resistance are poor, and only the pain point problem with insufficient operation stability and long-term effectiveness is solved, so that the problems of aging, solidification and blocking, blackening and hardening, even shedding, generation of small gaps and rebound of contact resistance caused by water vapor entering are avoided in the long-time operation process. Specifically, reference may be made to step S4 in the foregoing embodiment, which is not described in detail.

According to the technical scheme, the heating treatment method for the joint of the primary electrical equipment is characterized in that the silver layer is laid between the contact surfaces matched with the joint, the joint is fastened, and finally the self-healing compound grease is used for sealing and coating the whole structure to complete heating treatment of joint connection. The traditional power grease coating process is replaced by the silver layer, and the good surface contact between the contact surfaces can be realized by utilizing the soft characteristic of the silver material, so that the contact performance of the contact surfaces can be improved to the maximum extent and the contact resistance can be reduced compared with the traditional power grease coating process. And the whole self-healing compound fat of cladding again of joint can make the whole leakproofness that has of joint, greatly reduces the influence of factors such as external steam and ultraviolet irradiation to compound fat performance, utilizes good performances such as self-healing and ultraviolet shielding of self-healing compound fat simultaneously, effectively reduces ageing and the solidification problem that the compound fat of self-healing produced in the operation, further promotes the stability and the long-term effect that the joint generates heat and handles. By the processing method, the problem that the joint is abnormally heated due to insufficient long-term effect of the conventional electric primary equipment joint heating processing method can be effectively solved, frequent and repeated overhaul is avoided, operation and maintenance cost is reduced, and the safe operation level of a power grid is improved.

While the connector of electrical primary equipment and the heat generating processing method thereof provided by the present application have been described in detail, those skilled in the art will appreciate that the present disclosure is not limited thereto.