CN113451804A

CN113451804A - High-reliability multifunctional interface suitable for 500kV relay protection

Info

Publication number: CN113451804A
Application number: CN202110734688.6A
Authority: CN
Inventors: 高吉普; 辛明勇; 徐长宝; 代奇迹; 祝健杨; 李肖博; 姚浩; 习伟; 于杨
Original assignee: Guizhou Power Grid Co Ltd; Southern Power Grid Digital Grid Research Institute Co Ltd
Current assignee: Guizhou Power Grid Co Ltd; Southern Power Grid Digital Grid Research Institute Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-09-28

Abstract

The invention relates to a high-reliability multifunctional interface suitable for 500kV relay protection, which comprises: the connector assembly comprises a connector body and a clamping piece, the connector body is detachably connected with the clamping piece, and the clamping piece is used for clamping a cable under the action of external force; the protection assembly comprises a protection shell and a first protection piece, the first protection piece is connected with the joint body, and the first protection piece is used for supporting a cable. This high reliable multi-functional interface suitable for 500kV relay protection because the clamping-action of holder is favorable to the cable and connects the stability of being connected of body, reduces the risk that the cable breaks away from. Because the protective action of first protection piece for the cable of connection on connecting the body is difficult for taking place to buckle in the junction, avoids the angle of buckling undersize of kneck cable to lead to the cable to be qualified for the next round of competitions rupture and damaged phenomenon, and then is favorable to improving the service function life of cable, improves the service reliability and the security of cable.

Description

High-reliability multifunctional interface suitable for 500kV relay protection

Technical Field

The invention relates to the technical field of cable interfaces, in particular to a high-reliability multifunctional interface suitable for 500kV relay protection.

Background

The transformer substation is a place for changing voltage in a power grid, generally refers to a step-down transformer substation, in order to transmit electric energy generated by a power plant to a remote place, the voltage must be increased to become high voltage, and then the voltage is reduced as required near a user, and the voltage increasing and decreasing work is completed by the transformer substation. The 500kV transformer substation refers to a transformer substation with the highest voltage level of 500kV, the voltage of input electric energy and the voltage of output electric energy of the transformer substation are generally 500kV and 220kV, and a plurality of cables need to be laid and used in the transformer substation. After the cable is laid, in order to enable the cable to be a continuous line, the line needs to be communicated through a cable interface, and the cable interface is used for locking and fixing incoming and outgoing lines and plays a role in water resistance, dust resistance and vibration resistance.

In the prior art, the cable interface usually adopts a plug-in connection, and the connector comprises a plug or a jack. But when being connected to the quick-witted case, the kneck drops easily and installs insecure and leakproofness not enough, and the kneck needs to be buckled for a long time moreover, makes the cable of kneck both sides take place to buckle very easily and damage, arouses other dangers easily, brings the unnecessary loss.

Disclosure of Invention

Therefore, a highly reliable multifunctional interface suitable for 500kV relay protection is needed, so that a cable can be effectively protected during cable connection, the probability of bending and damage of the cable is reduced, and the reliability and safety of the cable are improved.

A high-reliability multifunctional interface suitable for 500kV relay protection comprises: the connector assembly comprises a connector body and a clamping piece, the connector body is detachably connected with the clamping piece, and the clamping piece is used for clamping a cable under the action of external force; the protection assembly comprises a protection shell and a first protection piece, the first protection piece is connected with the joint body and used for supporting the cable, the protection shell is provided with a protection cavity and a protection hole which are communicated with each other, the first protection piece is arranged in the protection cavity, and the joint body is in sealing fit with the protection hole.

In the installation process of the high-reliability multifunctional interface suitable for 500kV relay protection, firstly, a connector body is fixed on a case; then, the clamping piece and the first protection piece are sequentially sleeved on the cable; then, the cable passes through the connector main body and enters the case; then, the clamping piece is connected with the joint body, and the first protection piece is connected with the joint body, so that the first protection piece can support the cable; and finally, sleeving the protective shell outside the first protective part, and enabling the joint body to be in sealing fit with the protective hole. This high reliable multi-functional interface suitable for 500kV relay protection because the clamping-action of holder is favorable to the cable and connects the stability of being connected of body, reduces the risk that the cable breaks away from. Because the protective action of first protection piece for the cable of connection on connecting the body is difficult for taking place to buckle in the junction, avoids the angle of buckling undersize of kneck cable to lead to the cable to be qualified for the next round of competitions rupture and damaged phenomenon, and then is favorable to improving the service function life of cable, improves the service reliability and the security of cable.

In one embodiment, the clamping member is provided with a connecting portion and a clamping portion, the connecting portion is connected with the connector body, and the clamping portion is used for clamping the cable under the action of external force.

In one embodiment, the connector assembly further comprises a compression member, wherein the compression member is in compression fit with the clamping portion, so that the clamping portion clamps the cable.

In one embodiment, the first protection part is provided with a first matching part and a first protection part, the first matching part is connected with the first protection part, the first matching part is in plug fit with the pressing piece, and the first protection part is used for being sleeved on the cable.

In one embodiment, the pressing piece is provided with a projection, and the first matching part is in plug-in fit with the projection.

In one embodiment, the first protection part is a limiting spring, and the limiting spring is used for being sleeved on the cable.

In one embodiment, the protection assembly further includes a second protection member connected to the connector body and disposed opposite to the first protection member, and the second protection member is configured to fit over the cable.

In one embodiment, the joint assembly further includes a nut, the nut is screwed with an end of the joint body away from the first protection member, the second protection member is provided with a second matching portion and a second protection portion, the second matching portion is in plug-in fit with the nut, and the second protection portion is used for being sleeved on the cable.

In one embodiment, the protective housing is provided with a first protective cover and a second protective cover, the first protective cover is rotatably connected with the second protective cover, and the first protective cover and the second protective cover are buckled to form the protective cavity and the protective hole.

In one embodiment, the wall of the protection hole is provided with a sealing part, and the joint body is in sealing fit with the protection shell through the sealing part.

In one embodiment, the first protective cover is provided with a first connecting portion, the second protective cover is provided with a second connecting portion, and the first connecting portion is connected with the second connecting portion through bolts.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram i of a high-reliability multifunctional interface suitable for 500kV relay protection in an embodiment;

fig. 2 is an exploded view of a high-reliability multifunctional interface suitable for 500kV relay protection according to an embodiment;

fig. 3 is an exploded view of a second embodiment of a high-reliability multifunctional interface suitable for 500kV relay protection;

fig. 4 is a schematic structural view of the protective case according to an embodiment;

fig. 5 is a schematic view of an installation structure of a high-reliability multifunctional interface suitable for 500kV relay protection in an embodiment.

Description of reference numerals:

100. the high-reliability multifunctional interface is suitable for 500kV relay protection; 110. a joint assembly; 111. a connector body; 112. a clamping member; 1121. a connecting portion; 1122. a clamping portion; 1123. a closing plate; 113. a compression member; 1131. a bump; 114. a nut; 115. a waterproof rubber ring; 116. a gasket; 120. a protection component; 121. a protective shell; 1211. a protection cavity; 1212. a protective hole; 1213. a first protective cover; 1214. a second protective cover; 1215. a sealing part; 1216. a first connection portion; 1217. a second connecting portion; 122. a first guard; 1221. a first mating portion; 1222. a first guard portion; 123. a second guard; 1231. a second mating portion; 1232. a second protection part; 124. an extension; 125. and a gasket.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

In one embodiment, referring to fig. 1 to 5, a high-reliability multifunctional interface 100 suitable for 500kV relay protection includes: a joint assembly 110 and a protection assembly 120. The connector assembly 110 includes a connector body 111 and a clamping member 112, the connector body 111 is detachably connected to the clamping member 112, and the clamping member 112 is used for clamping the cable under an external force. The protection assembly 120 includes a protection shell 121 and a first protection component 122. The first shielding member 122 is connected to the joint body 111, and the first shielding member 122 is used to support the cable. The protection shell 121 has a protection cavity 1211 and a protection hole 1212, which are communicated with each other, the first protection member 122 is disposed in the protection cavity 1211, and the connector body 111 is in sealing fit with the protection hole 1212.

In the installation process of the high-reliability multifunctional interface 100 suitable for 500kV relay protection, firstly, the connector body 111 is fixed on a case; then, the clamping member 112 and the first protection member 122 are sequentially sleeved on the cable; then, the cable passes through the connector main body and enters the case; then, the clamping member 112 is connected with the joint body 111, and the first shielding member 122 is connected with the joint body 111, so that the first shielding member 122 supports the cable; finally, the protective shell 121 is sleeved outside the first protection part 122, and the joint body 111 is in sealing fit with the protection hole 1212. This high reliable multi-functional interface 100 that is applicable to 500kV relay protection because the clamping-action of holder 112 is favorable to the cable and connects body 111's stability of being connected, reduces the risk that the cable breaks away from. Due to the protection effect of the first protection part 122, the cable connected to the joint body 111 is not easy to bend at the joint, the phenomena of cable outlet breakage and damage caused by too small bending angle of the cable at the joint are avoided, the service function life of the cable is prolonged, and the use reliability and safety of the cable are improved.

It should be noted that, the joint body 111 and the protection hole 1212 are hermetically engaged, it should be understood that the protective casing 121 is connected to the joint body 111 through the protection hole 1212, and after the connection, the joint body 111 and the hole wall of the protection hole 1212 form a sealed connection, so that the protection cavity 1211 and the outer portion of the joint body 111 are isolated from each other.

The first protection part 122 may be a support groove, a support tube, a spring, or other support structure, so that the bending angle of the joint between the cable and the joint body 111 is increased, and the possibility of bending the joint due to gravity or external force is reduced or even avoided.

In one embodiment, referring to fig. 2, the clamping member 112 has a connecting portion 1121 and a clamping portion 1122. The connection portion 1121 is connected to the connector body 111, and the grip portion 1122 grips the cable by an external force. Thus, the clamping portion 1122 is deformed under the action of external force, so that the cable can be clamped, the fixing effect of the clamping piece 112 on the cable is favorably improved, the connection stability of the connector body 111 and the cable is further improved, and the use quality of the high-reliability multifunctional interface 100 suitable for 500kV relay protection is improved.

Specifically, referring to fig. 2, the clamping portion 1122 is two or more clamping claws, and the two or more clamping claws are arranged at intervals along the circumferential direction of the clamping member 112. So, make the gripper jaw take place deformation under through the exogenic action, can further play the clamping action to the cable, be favorable to improving the fixed effect of holder 112 to the cable, and then improve the connection stability of joint body 111 and cable, improve the use quality that is applicable to 500kV relay protection's high reliable multi-functional interface 100.

Further, referring to fig. 2, a closing plate 1123 is disposed on the clamping jaw, the closing plate 1123 is disposed at an end of the clamping jaw away from the connecting portion 1121, and the closing plate 1123 is disposed along a central axis of the clamping member 112 in an inclined manner. So, through the binding off effect of binding off board 1123, be favorable to improving the fixed effect of holder 112 to the centre gripping of cable, further improve the stability of being connected of connecting body 111 and cable, improve the use quality that is applicable to 500kV relay protection's high reliable multi-functional interface 100.

In one embodiment, referring to fig. 2, the joint assembly 110 further includes a waterproof rubber ring 115. The waterproof rubber ring 115 is sleeved on the cable, and the clamping piece 112 is sleeved on the waterproof rubber ring 115. So, through the cooperation of waterproof rubber circle 115 with holder 112, be favorable to improving 500 kV's waterproof sealing effect, avoid the rainwater to enter into quick-witted case, improve the safety in utilization and the use quality that are applicable to 500kV relay protection's high reliable multi-functional interface 100.

In one embodiment, referring to fig. 1, fig. 2, fig. 3 and fig. 5, the connector assembly 110 further includes a pressing member 113, and the pressing member 113 is press-fitted with the clamping portion 1122, so that the clamping portion 1122 clamps the cable. Thus, through the pressing fit of the pressing piece 113 and the clamping portion 1122, the clamping portion 1122 deforms, and plays a clamping role in clamping the cable, so that the fixing effect of the clamping piece 112 on the cable is favorably improved, the connection stability of the connector body 111 and the cable is further improved, and the use quality of the high-reliability multifunctional interface 100 suitable for 500kV relay protection is improved.

Alternatively, the compression member 113 and the clip portion 1122 may be press-fit, riveted, pinned, plugged, screwed, snap-fit or other fitting methods. Alternatively, the pressing member 113 is connected to another member, and indirectly press-engages with the clip portion 1122.

Specifically, referring to fig. 3, the pressing member 113 is screwed with the joint body 111, so that the pressing member 113 is press-fitted to the clamping portion 1122. Thus, the structure is simple, the structural stability of the joint assembly 110 is improved, and the structural stability and the use quality of the high-reliability multifunctional interface 100 suitable for 500kV relay protection are improved. Meanwhile, the threaded connection mode is convenient to disassemble, the clamping piece 112 is convenient to replace, and the use convenience and the use quality of the high-reliability multifunctional interface 100 suitable for 500kV relay protection are improved.

In one embodiment, referring to fig. 1, fig. 2, fig. 3 and fig. 5, the first protection member 122 has a first mating portion 1221 and a first protection portion 1222. The first mating portion 1221 is connected to the first protection portion 1222, the first mating portion 1221 is in insertion fit with the pressing member 113, and the first protection portion 1222 is configured to be sleeved on the cable. Thus, the way of inserting and matching the first matching portion 1221 and the pressing member 113 is beneficial to improving the convenience of assembling and disassembling the first protection member 122, and meanwhile, the supporting function of the first protection member 122 on the cable is ensured, so that the cable is prevented from being bent and broken, and the use quality of the first protection member 122 is improved.

Specifically, referring to fig. 1, fig. 2, fig. 3 and fig. 5, a protrusion 1131 is disposed on the pressing member 113, and the first matching portion 1221 is inserted into and matched with the protrusion 1131. Further, a first matching hole is formed in the first matching portion 1221, a first protruding portion is formed in the protruding block 1131, and the first matching hole is connected with the first protruding portion in a buckling mode. So, the simple high efficiency of grafting complex mode, convenient to install in the dismantlement is favorable to improving the convenience in use of first protection piece 122, and the snap fit of first mating holes and first bellying is favorable to improving the stability of being connected of first cooperation 1221 and lug 1131, and then improves the use quality of the high reliable multi-functional interface 100 who is applicable to 500kV relay protection.

Further, referring to fig. 2, the first matching holes and the first protrusions are more than two, the more than two first protrusions are arranged at intervals along the circumferential direction of the protruding block 1131, and the more than two first matching holes are arranged at intervals along the circumferential direction of the first matching portion 1221. Thus, the convenience of the first protection element 122 is further improved, and the connection stability between the first matching portion 1221 and the bump 1131 is further improved, so as to improve the use quality of the highly reliable multifunctional interface 100 suitable for 500kV relay protection.

Alternatively, the shape of the bump 1131 may be triangular, rectangular, regular pentagonal, regular hexagonal, or other irregular shape.

Specifically, referring to fig. 1, fig. 2, fig. 3 and fig. 5, the outer contour of the first matching portion 1221 is a hexagon, and the outer contour of the protrusion 1131 is a hexagon. In this way, the convenience of installation of the first protection element 122 can be improved, and the rotation can be prevented from causing loosening and disengagement, which is advantageous for improving the reliability and quality of use of the highly reliable multifunctional interface 100 suitable for 500kV relay protection. The present embodiment provides only a specific shape configuration of the first matching portion 1221 and the outer contour of the protrusion 1131, but not limited thereto.

Optionally, the first shield 1222 is a rigid sleeve, plastic tube, spring, channel, or other shielding device.

Specifically, referring to fig. 1, fig. 2, fig. 3 and fig. 5, the first protection portion 1222 is a limiting spring, and the limiting spring is used for being sleeved on the cable. So, spacing spring housing is established on the cable, is favorable to all-round protection cable, receives gravity or exogenic action when taking place to drag the bending type as the cable, and spacing spring can play the cushioning effect because elastic deformation, avoids the junction angle of buckling too big, is favorable to improving the life of cable.

In an embodiment, referring to fig. 1, fig. 2, fig. 3 and fig. 5, the protection assembly 120 further includes a second protection member 123, the second protection member 123 is connected to the connector body 111, the second protection member 123 is disposed opposite to the first protection member 122, and the second protection member 123 is configured to be sleeved on the cable. Therefore, the second protection member 123 is beneficial to further protecting the cable, so as to ensure the supporting function of the second protection member 123 on the cable, avoid the cable from being bent and broken, and improve the use quality of the second protection member 123.

In one embodiment, referring to fig. 2, the connector assembly 110 further includes a nut 114, the nut 114 is screwed with an end of the connector body 111 away from the first protection member 122, the second protection member 123 has a second mating portion 1231 and a second protection portion 1232, the second mating portion 1231 is inserted into and mated with the nut 114, and the second protection portion 1232 is configured to be sleeved on the cable. Further, referring to fig. 2, the joint assembly 110 further includes a washer 116, and the washer 116 is disposed between the nut 114 and the joint body 111. Thus, the nut 114 is screwed with the joint body 111, and the second engagement portion 1231 is inserted into and engaged with the nut 114, which is beneficial to improving the convenience of assembling and disassembling the second protection member 123, and simultaneously ensures the supporting function of the second protection member 123 on the cable, thereby avoiding the cable from being bent and broken, and improving the use quality of the first protection member 122.

Further, referring to fig. 2, a second mating hole is formed on the second mating portion 1231, and a second protrusion is formed on the nut 114, and the second mating hole is connected to the second protrusion in a snap-fit manner. Thus, the manner of the insertion matching is simple and efficient, the mounting and dismounting are facilitated, the use convenience of the second protection element 123 is improved, the buckling matching between the second matching hole and the second protruding portion is facilitated to improve the connection stability between the second matching portion 1231 and the nut 114, and the use quality of the high-reliability multifunctional interface 100 suitable for 500kV relay protection is improved.

Further, referring to fig. 2, the number of the second matching holes and the second protrusions are two or more, the two or more second protrusions are disposed at intervals along the circumferential direction of the nut 114, and the two or more second matching holes are disposed at intervals along the circumferential direction of the second matching portion 1231. Thus, the convenience of the second protection element 123 is further improved, and the connection stability between the second matching portion 1231 and the bump 1131 is further improved, so as to improve the use quality of the highly reliable multifunctional interface 100 suitable for 500kV relay protection.

Optionally, the second guard 1232 is a rigid sleeve, plastic tube, spring, channel, or other guard.

Specifically, referring to fig. 1, fig. 2, fig. 3 and fig. 5, the second protection portion 1232 is a limiting spring, and the limiting spring is used for being sleeved on the cable. So, spacing spring housing is established on the cable, is favorable to all-round protection cable, receives gravity or exogenic action when taking place to drag the bending type as the cable, and spacing spring can play the cushioning effect because elastic deformation, avoids the junction angle of buckling too big, is favorable to improving the life of cable.

In one embodiment, referring to fig. 1 and fig. 4, the protection casing 121 has a first protection cover 1213 and a second protection cover 1214, the first protection cover 1213 is rotatably connected to the second protection cover 1214, and the first protection cover 1213 and the second protection cover 1214 are buckled to form a protection cavity 1211 and a protection hole 1212. So, swing joint's first protective cover 1213 and second protective cover 1214 are favorable to improving the installation convenience of protective housing 121, improve the use experience of protective housing 121, and simultaneously, the use of protective housing 121 is favorable to dustproof and waterproof, is favorable to improving stability and reliability that the cable is connected under outdoor environment, and then improves the use reliability and the use quality of the high reliable multi-functional interface 100 who is applicable to 500kV relay protection.

In one embodiment, referring to fig. 1 and 4, a sealing portion 1215 is disposed on a wall of the protection hole 1212, and the connector body 111 is sealingly engaged with the protection casing 121 through the sealing portion 1215. So, be favorable to improving the leakproofness of protective housing 121 for the circuit is normally unobstructed, and makes the junction of interface body and cable keep encapsulated situation, guarantees the insulation level of cable joint department, is favorable to improving the operational reliability of cable and quick-witted case.

Further, referring to fig. 1 and fig. 4, the protection casing 121 is provided with an extension portion 124, the extension portion 124 is connected to the hole wall of the protection hole 1212, and the extension portion 124 extends away from the protection cavity 1211. So, extension 124 be provided with and do benefit to extension cable sealing 1215 position, strengthen the leakproofness of protective housing 121, improve the supporting role of cable simultaneously, be favorable to protecting the cable position not receive excessive buckling, improve the life of cable.

Further, referring to fig. 1 and 4, there are two extending portions 124, and the two extending portions 124 are respectively disposed on two opposite sides of the protective casing 121. So, be favorable to further extension cable sealing 1215 position, strengthen the leakproofness of protective housing 121, further improve the supporting role of cable simultaneously, be favorable to protecting the cable position not to receive excessive buckling, improve the life of cable.

Alternatively, the first protective cover 1213 and the second protective cover 1214 can be snap fit, bolted, threaded, pinned, welded, glued, or otherwise attached.

Specifically, referring to fig. 1 and 4, the first protection cover 1213 has a first connection portion 1216, the second protection cover 1214 has a second connection portion 1217, and the first connection portion 1216 and the second connection portion 1217 are bolted. So, be favorable to improving the stability of being connected of first protective cover 1213 and second protective cover 1214, improve the protection effect and the sealed effect of protective housing 121. Meanwhile, the bolt connection mode is convenient to disassemble and assemble, and the use convenience of the protective shell 121 is improved.

Further, referring to fig. 1 and 4, the number of the first connecting portions 1216 is two or more, the number of the second connecting portions 1217 is two or more, and the first connecting portions 1216 and the second connecting portions 1217 are disposed in a one-to-one correspondence. Thus, the connection stability between the first protection cover 1213 and the second protection cover 1214 is further improved, and the protection effect and the sealing effect of the protection case 121 are improved. While improving the convenience of use of the protective case 121. The present embodiment provides only a specific connection manner between the first protection cover 1213 and the second protection cover 1214, but not limited thereto.

In one embodiment, the walls of the first protective cover 1213 and/or the walls of the second protective cover 1214 are provided with a gasket 125, such that when the protective casing 121 is snapped together, the first protective cover 1213 sealingly engages the second protective cover 1214. Therefore, the sealing effect of the protective shell 121 is improved, water or other impurities are prevented from entering the protective cavity 1211, and the overall quality of the protective shell 121 is improved.

It should be noted that the sealing gaskets 125 are disposed on the cavity wall of the first protection cover 1213 and/or the cavity wall of the second protection cover 1214, and it should be understood that the sealing gaskets 125 are disposed in three ways, the first way is that the sealing gasket 125 is disposed on the cavity wall of the first protection cover 1213, the second way is that the sealing gasket 125 is disposed on the cavity wall of the second protection cover 1214, and the third way is that the sealing gasket 125 is disposed on both the cavity wall of the first protection cover 1213 and the cavity wall of the second protection cover 1214.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The utility model provides a high reliable multi-functional interface suitable for 500kV relay protection which characterized in that, high reliable multi-functional interface suitable for 500kV relay protection includes:

the connector assembly comprises a connector body and a clamping piece, the connector body is detachably connected with the clamping piece, and the clamping piece is used for clamping a cable under the action of external force;

the protection assembly comprises a protection shell and a first protection piece, the first protection piece is connected with the joint body and used for supporting the cable, the protection shell is provided with a protection cavity and a protection hole which are communicated with each other, the first protection piece is arranged in the protection cavity, and the joint body is in sealing fit with the protection hole.

2. The high-reliability multifunctional interface suitable for 500kV relay protection according to claim 1, wherein the clamping member is provided with a connecting portion and a clamping portion, the connecting portion is connected with the connector body, and the clamping portion is used for clamping a cable under the action of an external force.

3. The high-reliability multifunctional interface suitable for 500kV relay protection according to claim 2, wherein the connector assembly further comprises a pressing member, and the pressing member is in press fit with the clamping portion, so that the clamping portion clamps the cable.

4. The high-reliability multifunctional interface suitable for 500kV relay protection according to claim 3, wherein the first protection member is provided with a first matching portion and a first protection portion, the first matching portion is connected with the first protection portion, the first matching portion is in plug-in fit with the compression member, and the first protection portion is used for being sleeved on a cable.

5. The high-reliability multifunctional interface suitable for 500kV relay protection according to claim 4, wherein a bump is arranged on the compressing member, and the first matching portion is in plug-in fit with the bump; and/or the presence of a gas in the gas,

the first protection part is a limiting spring, and the limiting spring is used for being sleeved on the cable.

6. The interface of claim 1, wherein the protection assembly further comprises a second protection member, the second protection member is connected to the connector body, and the second protection member is disposed opposite to the first protection member, and the second protection member is configured to fit over the cable.

7. The high-reliability multifunctional interface suitable for 500kV relay protection according to claim 6, wherein the connector assembly further comprises a nut, the nut is screwed to one end of the connector body, which is away from the first protection member, the second protection member is provided with a second matching portion and a second protection portion, the second matching portion is in plug-in fit with the nut, and the second protection portion is used for being sleeved on a cable.

8. The high-reliability multifunctional interface suitable for 500kV relay protection according to any one of claims 1 to 7, wherein the protection housing is provided with a first protection cover and a second protection cover, the first protection cover is rotatably connected to the second protection cover, and the first protection cover is buckled with the second protection cover to form the protection cavity and the protection hole.

9. The high-reliability multifunctional interface suitable for 500kV relay protection according to claim 8, wherein a sealing portion is provided on a hole wall of the protection hole, and the connector body is in sealing fit with the protection shell through the sealing portion.

10. The high-reliability multifunctional interface suitable for 500kV relay protection according to claim 8, wherein the first protection cover is provided with a first connecting portion, the second protection cover is provided with a second connecting portion, and the first connecting portion is bolted to the second connecting portion.