CN210517760U - Intermediate connecting device for high-voltage power cable - Google Patents
Intermediate connecting device for high-voltage power cable Download PDFInfo
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- CN210517760U CN210517760U CN201921386398.1U CN201921386398U CN210517760U CN 210517760 U CN210517760 U CN 210517760U CN 201921386398 U CN201921386398 U CN 201921386398U CN 210517760 U CN210517760 U CN 210517760U
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Abstract
The utility model discloses a high-voltage power cable intermediate connecting device, which at least comprises two sections of power cables needing to be connected; further comprising: a sealed shell and a component mounting plate; the component mounting plate is arranged in the sealed shell; a bi-pass sleeve seat is arranged on the component mounting plate; and the two sections of power cables to be connected are respectively connected to two ends of the two-way sleeve seat through the front inserted cable accessories, so that the electrical communication of the two sections of cables is completed. The utility model provides a high voltage power cable intermediate junction device for power cable's intermediate junction or branch extension, adopt standard components and parts as the main component part of product, with the box of stainless steel or cold plate material, will go up standard component and seal in inclosed space, and utilize the peculiar cladding of cable seal sheath sealed and flexible function, as cable business turn over line and the sealing connection of box and the adaptation that machinery shifted, but wide direct application in the connection extension of 6-35KV distribution lines cable.
Description
Technical Field
The utility model relates to a high-tension transmission technical field, more specifically the utility model relates to a high-voltage power cable intermediate junction device that says so.
Background
With the increase of the power supply load, the power cable is widely used. In the long-distance laying process, a plurality of cables are required to be connected, so that the length required by use can be reached, and in the actual laying process, the length of a high-voltage cable with a large section is often limited by factors such as transportation, installation and laying difficulty, size of a cable drum and the like, so that the larger the section of the power cable is, the more the cables in certain unit length are used and connected.
At present, a plurality of cables are generally connected by directly connecting power cable intermediate joints, and the power cable intermediate joints influence construction quality due to factors such as construction technology, quality of constructors and construction environment, so that breakdown short-circuit accidents are easy to happen, and fire disasters are caused. Because the cable laying space is smaller and the cable spacing distance is smaller, when a breakdown or short-circuit accident occurs to a certain cable in a cable well or a tunnel, all cables in the whole cable well or the tunnel are affected, the safe operation of a power system is seriously affected, and larger economic loss is brought to power users.
After the high-voltage cable intermediate joint is installed on site, the operation is affected by the surrounding environment, and the breakdown and explosion accidents of the cable intermediate joint are caused by the inevitable damage of insulation caused by external factors such as moisture invasion and mechanical stress. The most serious accident of the power system is the fire disaster in the cable tunnel caused by the explosion of the high-voltage cable joint. Due to the narrow space of the underground tunnel and the dense cable arrangement, other cables are involved, large-area power failure accidents are caused, irreparable loss is caused to the whole power system, and the power supply reliability is seriously influenced. To solve these problems, a protection measure commonly used by power supply units or construction units is to use a high-voltage cable intermediate connector box with fireproof, mechanical stress releasing and explosion-proof functions to comprehensively protect the cable intermediate connector, and to seal the high-voltage cable intermediate connector in an explosion-proof box shell, so that once the cable intermediate connector has a breakdown explosion accident, other peripheral power facilities can be effectively protected under the protection of the cable explosion-proof box, and secondary damage is prevented. The cable middle joint after construction is protected, the cable middle joint explosion-proof box is usually adopted for later stage protection, two types of cable explosion-proof boxes are commonly used at present, a linear cable explosion-proof box and a flexible cable explosion-proof box are manufactured by metal or glass fiber reinforced plastics, the appearance of a product is in a long-strip column shape, and the flexible cable explosion-proof box does not have flexible expansion degree. Because the cable is coiled or laid in a cable trench or a cable well, the cable can be distorted and deformed during the construction and laying of the cable intermediate connector, and the cable is in an irregular bending state, so that the cable explosion-proof box cannot adapt to the distortion and deformation of the cable intermediate connector after the construction of the cable intermediate connector is finished, and the cable intermediate connector cannot be effectively buckled in the shell, so that the cable explosion-proof box cannot be installed or is difficult to install. The flexible explosion-proof box of cable structurally utilizes protruding muscle and recess clearance fit's connected mode, has realized the synchronous crooked technical requirement of explosion-proof box and cable betterly, has reduced the construction degree of difficulty, makes things convenient for the site operation. Although the explosion-proof box of flexible cable can be better carry out effectual protection to cable intermediate head, if meet electric power transformation or increase the circuit, the branch return circuit is taken off from cable junction that can not be convenient, is unfavorable for the engineering transformation in later stage and the adduction of branch circuit.
Therefore, how to provide a sealed high-voltage power cable intermediate connection device convenient for later engineering is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a high voltage power cable intermediate junction device for the extension of connecting or branch in the middle of the cable adopts the main component part of standard components and parts as the product, with the box of stainless steel or cold plate material, seals above standard component in inclosed space to utilize the peculiar cladding of cable seal sheath to seal and flexible function, as the sealing connection of cable business turn over line and box and the adaptation that the machinery shifted, but wide direct application in the connection extension of 6-35KV distribution lines cable.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-voltage power cable intermediate connection device at least comprises two sections of disconnected power cables; further comprising: a sealed shell and a component mounting plate; the component mounting plate is arranged in the sealed shell; a bi-pass sleeve seat is arranged on the component mounting plate; and two connecting ends of the two-way sleeve seat are respectively connected with a power cable.
Preferably, in the above high-voltage power cable intermediate connection device, the hermetic case includes a case body and a cover plate; the cover plate is buckled with the box body and is fastened and sealed by bolts, and an annular sealing strip is arranged on the cover plate.
Furthermore, the box body is provided with an operation observation hole, and the operation observation hole is made of special explosion-proof glass, so that the protection grade is not influenced, and the operation maintenance of the connecting end is facilitated.
Preferably, in the above high-voltage power cable intermediate connection device, the two-way sleeve seat is installed on the component mounting plate through a metal pressing strip, and the metal pressing strip compresses the two-way sleeve through the height of the fastening screw on the adjusting screw rod.
Furthermore, the bi-pass sleeve seats are three and are respectively connected with each phase of three-phase electricity, metal pressing strips compress the three bi-pass sleeve seats by utilizing fixing bolts on the component mounting plate, and the purpose of fixing the bi-pass sleeve seats is achieved.
Preferably, in the above middle connection device for high-voltage power cables, cable outlet connection cylinders are provided on side surfaces of both ends of the sealed housing; the outer end of the cable outgoing connecting cylinder is sleeved with a cold-shrinkage sealing sheath, and a power cable penetrates through the cold-shrinkage sealing sheath and the outgoing connecting cylinder; after the cable terminal accessory is installed, the outgoing cable is fixed on the cable fixing clamp.
Further, two sections of power cables respectively sequentially penetrate through the cold-shrinkage type sealing sheath, the cable outgoing connecting cylinder and the cable terminal accessory, three phases of the power cables are respectively fixed on the three bi-pass sleeve seats through the front plugging cable accessory, so that the two sections of power cables are connected, and the cable sheath is fixed by utilizing the cable fixing clamp, so that the external cables are prevented from damaging the cable accessory and the bi-pass sleeve seats in operation due to external stress, and electrical accidents are caused; in addition, the cold-shrinkage type sealing sheath belongs to one of expansion materials and is mainly used for carrying out seamless sealing on the power cable and the cable outgoing connecting cylinder; the principle of the sealing device is that elastomer materials (commonly used silicone rubber and ethylene propylene rubber) are injected and vulcanized in a factory for molding, then a cold-shrinkage type sealing sheath is formed by expanding and lining with a nylon spiral support, the cold-shrinkage type sealing sheath is sleeved on a cable outgoing connecting cylinder when in use, a power cable penetrates through the inside, a nylon strip (support) supported inside is drawn out when in sealing, and the expanded cylindrical silicone rubber material tightly wraps the outgoing connecting cylinder and the outer diameter of the cable by means of elastic retraction force, so that the sealing effect is achieved.
Preferably, in the above high-voltage power cable intermediate connection device, a capacitive belt sensor is arranged at the bottom of the two-way sleeve seat, and the capacitive belt sensor is connected with a high-voltage belt display.
Furthermore, a capacitive type belt sensor provides display electric energy for a high-voltage electrified display, 1-3 cable accessories can be installed on each side of the double-pass sleeve seat, the cable accessories are divided into front plug-in cables and rear plug-in cable accessories, the front plug-in cable accessories are directly connected with the double-pass sleeve seat, after the front plug-in cable accessories and the double-pass sleeve seat are installed, connection of one path of cables is completed, if the power cables need to be branched, the rear plug-in cable accessories need to be additionally installed behind the front plug-in cable accessories, and therefore the branching and tapping requirements of the cables are met.
Preferably, in the above high-voltage power cable intermediate connection device, the two-way sleeve seat is connected to the front plug cable accessory and the rear plug cable accessory respectively; the front plug cable accessory and the rear plug cable accessory are respectively connected with the power cable.
Furthermore, the front plug is suitable for the wiring installation of the cross-linked power cable inlet and outlet terminal and is in full-sealing connection with a bi-pass sleeve seat through bolts, and the front plug belongs to European 630A plug series. The front plug-in cable accessory is connected to the sleeve socket through a bolt during working, the tail part of the front plug-in cable accessory can be directly plugged by an insulating plug, and the front plug-in cable accessory can also be connected with a rear plug-in cable accessory or a rear plug-in lightning arrester in an expanding mode. The front-plug cable accessory generally adopts a shielding type, the inner screen and the outer screen of the plug enable the electric field structure to be optimized, the outer surface of the cable head is effectively enabled to keep a zero potential, and personal safety of maintenance operation is ensured.
The rear plug-in cable accessory provides an expanded cable connection loop (branch), is plugged behind the front plug-in cable accessory on the bi-pass sleeve seat, and the tail part of the rear plug-in cable accessory can be directly plugged by an insulating plug and can also be expanded and connected with another rear plug-in cable accessory or a rear plug-in arrester. The rear-plug cable accessory generally adopts a shielding type, the inner screen and the outer screen of the plug enable the electric field structure to be optimized, the outer surface of the cable head is effectively enabled to keep a zero potential, and personal safety of maintenance operation is guaranteed.
Preferably, in the above high-voltage power cable intermediate connection device, the sealed housing is provided with an observation hole; the observation holes are divided into an electrified display observation hole and an operation observation hole; the live display observation hole is arranged on the side wall of the installation position of the high-voltage live display; the operation observation hole is arranged on the side wall of the mounting position of the two-way sleeve seat.
Furthermore, the observation hole is formed by sealing 5-8mm thick explosion-proof glass, the observation hole is divided into an operation observation hole and an electrified display observation window, the operation observation hole is uniformly distributed in the middle of the front side of the box body, the electrified display observation hole is arranged on the upper part of one side of the box body, the operation conditions of each part in the box body and the high-voltage electrified display can be conveniently observed through the observation hole, and particularly, in a connecting well in the middle of a cable, operation and maintenance personnel can observe the operation conditions of the three-phase cable at any time.
Preferably, in the above high-voltage power cable intermediate connection device, the rear-plug cable accessories are plugged to perform cable branching, and an insulation plug is arranged between the rear-plug cable accessories.
Preferably, in the above intermediate connection device for a high-voltage power cable, a sheath protector and a ground copper bar are further included; the grounding copper bar is arranged on the bottom surface of the sealing shell and is communicated with the mounting surface; the cable sheath protector is arranged between the cable metal sheath and the ground.
Further, cable sheath protector, 35kV large cross section electric power single core cable, the three interconnect in metal sheath one end of cable connect ground, the other end is ungrounded, when lightning wave or inside overvoltage flow along the cable core, higher impact overvoltage can appear in the not earthing terminal of metal sheath, or when system short circuit accident current flows through the cable core, very high power frequency induction overvoltage also can appear in its sheath not earthing terminal. The overvoltage can break down the insulation of the outer protective layer of the cable, so that multipoint grounding faults of the metal protective layer of the cable are caused, the normal operation of the power cable is seriously influenced, and the service life of the cable is even greatly reduced. The sheath protector can limit the induced voltage and fault overvoltage on the power cable metal sheath (or metal sheath); the ground copper bar is used for grounding of the cable copper shield and the cable armor layer, so that the working stability of the circuit system of the improved equipment is guaranteed, the generated static electricity is discharged, and safety guarantee is provided for workers.
Preferably, in the above high-voltage power cable intermediate connection device, a box mounting bracket is provided on the sealed housing.
Furthermore, the box body mounting support is arranged on the periphery of the bottom of the box body, four supports for fixing are arranged, and the equipment can be conveniently fixed and can be laterally arranged on the wall of the cable well, and can also be flatly arranged on the ground of the cable well or on the supports.
Further, the sealed casing is made by the stainless steel sheet metal of thickness 2.0-3mm, the leakproofness of box is guaranteed to the panel combination department adoption full weld, sealed casing divide into box and apron, box upper portion a week has the panel beating hem of sealed fastening usefulness, there are a plurality of bolt holes that are used for fastening sealed on the hem, case lid lock department has the sealing strip that is used for the crimping to seal, after case lid and box lock, can play the full seal effect, this box main function is with the power cable who connects, bi-pass casing seat, the ground connection copper bar, cable sheath protector, high-voltage electricity display device seals in the box.
Compared with the prior art, the utility model, the technological effect lies in:
1. the high-voltage power cable intermediate connection equipment adopts an integral sealing mode, greatly improves the protection level of the equipment, ensures that the equipment has good sealing property, meets the requirement of the protection level under extremely cold and hot conditions on good sealing property, can reach IP68 in the protection level, and effectively solves the technical problem of moisture in the operating environment of a common cable distribution box;
2. in the multi-branch cable intermediate connection equipment, when a certain section of cable breaks down, the broken cable can be cut off more quickly, the operation of other normal cables is recovered, or emergency power supply is carried out in an emergency expansion mode, so that more sufficient time is gained for later-stage emergency repair;
3. the high-voltage cable is matched with the cable sealing sheath, so that the technical problem that the sealing performance of the high-voltage cable is reduced due to mechanical movement or stress deflection in operation is solved;
5. the equipment is small in size, the appearance is cuboid, the width is 400-500mm, the depth is 400-500mm, and the length is 1600-2000mm, the design size proportion of the equipment is optimized to the maximum extent, components in the equipment can be installed and manufactured by adopting general standard components, the application range of product models is large, the construction process requirement is simple, the installation and construction are convenient, the installation mode is flexible and convenient, the wall can be hung, the frame can be installed, and the maintenance and the replacement are easy to operate;
6. the equipment has a good explosion-proof function, and even if the operation fault occurs in the cable intermediate connection equipment, the fault range can be sealed in the box body, so that the damage to external personnel and equipment is avoided; the secondary fire disaster caused by the breakdown accident of the cable end is avoided;
7. the special explosion-proof glass is adopted as the cover plate, so that the protection grade is not influenced, and the checking work of the operation and maintenance of the connecting end head is facilitated;
8. can effectually carry out the sectional type management with the cable, provide great convenient condition for electric power transformation, the circuit fortune of later stage is maintained.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic structural diagram of the present invention;
FIG. 3 is a schematic structural view of a component mounting plate according to the present invention;
figure 4 attached drawing is the utility model discloses a bi-pass sleeve pipe seat assembly drawing.
The device comprises a power cable 1, a box 21, a cover plate 22, a component mounting plate 3, a 31 two-way sleeve seat, a 32 metal pressing strip, a 33 cable outgoing connecting cylinder, a 34 cold-shrinkage type sealing sheath, a 35 cable fixing clamp, a 36 high-voltage electrified display, a 37 front inserted cable accessory, a 38 rear inserted cable accessory, a 39 electrified display observation hole, a 311 running observation hole, a 312 insulating plug, a 313 cable sheath protector, a 314 grounding copper bar and a 315 box mounting support.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to fig. 1-4 of the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model discloses connecting device in middle of high voltage power cable for the extension of connection or branch in the middle of the cable, adopt standard components and parts as the main component part of product, with the box of stainless steel or cold plate material, will go up standard component and seal in inclosed space, and utilize the peculiar cladding of cable seal sheath sealed and flexible function, as the sealing connection of cable business turn over line and box and the adaptation that machinery shifted, but wide direct application in the connection extension of 6-35KV distribution lines cable.
An intermediate connection device of a high-voltage power cable 1 at least comprises two sections of disconnected power cables 1; further comprising: a sealed housing and a component mounting plate 3; wherein, the component mounting plate 3 is arranged in the sealed shell; a bi-pass sleeve seat 31 is arranged on the component mounting plate 3; two sections of power cables 1 are respectively connected to two ends of a two-way sleeve holder 31.
In the embodiment of the present invention, the sealing housing includes a box body 21 and a cover plate 22; the cover plate 22 is fastened to the case 21, and an annular sealing strip is provided on the cover plate 22.
The embodiment of the utility model provides an in, apron 22 adopts dedicated explosion-proof glass, neither influences the protection level, is convenient for again connect the operation maintenance's of end work of looking over.
The embodiment of the utility model provides an in, bi-pass sleeve pipe seat 31 passes through metal layering 32 to be installed on components and parts mounting panel 3.
In another embodiment, three bi-pass sleeve seats 31 are provided, and are respectively connected to each phase of three-phase power, and the metal pressing bars 32 are used for pressing the three bi-pass sleeve seats 31 by using fixing bolts on the component mounting plate 3, so as to achieve the purpose of fixing the bi-pass sleeve seats 31.
In the embodiment of the utility model, the side surfaces of the two ends of the sealing shell are provided with cable outlet connecting cylinders 33; the outer end of the cable outlet connecting cylinder 33 is sleeved with the cold-shrinkage type sealing sheath 34, and the inner end is sleeved with the cable 1; after the cable terminal accessory is constructed, the cable 1 is installed on the cable fixing clamp 35.
In the embodiment of the utility model, two sections of power cables 1 respectively pass through the cold-shrinkable sealing sheath 34, the cable outgoing connecting cylinder 33 and the cable fixing clamp 35 in sequence, three phases of the power cables 1 are respectively fixed on the three bi-pass sleeve seats 31, so that the two sections of power cables 1 are connected, and the outgoing cables are fixed by the cable fixing clamp 35, thereby ensuring that external cables cannot damage cable accessories and the bi-pass sleeve seats 31 in operation due to external stress to cause electrical accidents; in addition, the cold-shrink type sealing sheath 34 belongs to one of expansion materials and is mainly used for carrying out seamless sealing on the power cable 1 and the cable outgoing connecting cylinder 33; the principle of the method is that elastomer materials (commonly used silicone rubber and ethylene propylene rubber) are injected and vulcanized in a factory for molding, then a cold-shrinkage type sealing sheath 34 is formed by expanding and lining with nylon spiral supports, when the cold-shrinkage type sealing sheath 34 is used, the cold-shrinkage type sealing sheath is sleeved on a cable outlet connecting cylinder 33, a power cable 1 passes through the inside, a nylon strip (support) supported inside is drawn out during sealing, and the expanded cylindrical silicone rubber material tightly wraps the outer diameter of the cable by means of elastic retraction force, so that the sealing effect is achieved.
It is to be understood that: the high-voltage live display is a prompting safety device which is directly arranged on indoor electrical equipment and can visually display whether the electrical equipment has operating voltage or not. When the equipment has operating voltage, the display window of the display emits flashing light to warn people that the high-voltage equipment is electrified, and no indication is provided when the high-voltage equipment is not electrified. The device is generally installed in incoming buses, circuit breakers, main transformers, switch cabinets and other places where whether electrification is required to be displayed. The composition structure is as follows: the LED display device is composed of a sensor, a lead and a display provided with an LED. The working principle is as follows: the electric field coupling principle between the high-voltage electric field and the sensors is utilized to perform induction type (non-contact type) sampling for display outside the safe distance, the three sensors are connected to a 'A, B, C' three-phase bus respectively, and are not in direct contact with a high-voltage charged body and keep a certain safe distance. It receives the electric field signal of the high-voltage charged body and transmits the signal to the working power supply of the display. When the equipment has operating voltage, the three-phase indicator lamp of the display emits light to indicate that the high-voltage equipment is electrified, and when the system has ground fault, the one-phase indicator lamp of the ground fault can be naturally extinguished.
The embodiment of the utility model provides an in, the bottom of bi-pass sleeve seat 31 is provided with the electric capacity type and takes the electric sensor, and electric capacity type takes the electric sensor to be connected with high-voltage electric display 36.
The embodiment of the utility model provides an in, electric capacity type band sensor is high-voltage electricity display 36 provides and shows the electric energy, 1-3 cable accessories can be installed on every side of bi-pass sleeve pipe seat 31, insert cable accessories 37 before the cable accessories divide and insert cable accessories 38 after with, direct and bi-pass sleeve pipe seat 31 connect insert cable accessories 37 before, insert cable accessories 37 and bi-pass sleeve pipe seat 31 installation after at present, accomplish the connection of cable all the way, if need carry out power cable 1's branch this moment, then need insert cable accessories 37 before after installing additional in the back and insert cable accessories 38, thereby accomplish the branch shunting requirement of cable.
In the embodiment of the present invention, the two-way casing seat 31 is connected to the front plug cable accessory 37 and the rear plug cable accessory 38 respectively; the front plug cable attachments 37 and the rear plug cable attachments 38 are connected to the power cable 1, respectively.
In the embodiment of the utility model, the sealed shell is provided with an observation hole; the observation holes are divided into an electrified display observation hole 39 and an operation observation hole 311; the live display observation hole 39 is provided on the side wall where the high voltage live display 36 is installed; a service observation hole 311 is provided in the side wall where the two-way cannula holder 31 is installed. The observation holes are formed by sealing 5-8 mm-thick explosion-proof glass and are respectively an operation observation hole 311 and an electrified display observation hole 39, the operation observation holes 311 are uniformly distributed in the middle of the front side of the box body 21, the electrified display observation holes are arranged on the upper part of one side of the box body 21, the operation conditions of each part in the box body 21 and the high-voltage electrified display 36 can be conveniently observed through the observation holes, and particularly, in a connecting well in the middle of a cable, operation and maintenance personnel can observe the operation conditions of the three-phase cable at any time.
In the embodiment of the present invention, the rear plug cable accessory 38 is plugged to perform cable branching, and the rear plug cable accessory 38 is provided with the insulating plug 312 at the rear.
The embodiment of the utility model provides an in, cable sheath protector 313 is 35kV large cross section electric power single core cable, and the three interconnections in metal sheath one end of cable are connected to ground, and the other end is ungrounded, and when lightning wave or inside overvoltage flowed along the cable core, higher impact overvoltage can appear in the not earthing terminal of metal sheath, or when system short circuit accident current flowed through the cable core, very high power frequency induction overvoltage also can appear in its sheath not earthing terminal. The overvoltage may break through the insulation of the outer protective layer of the cable, which causes a multipoint grounding fault of the metal protective layer of the cable, seriously affects the normal operation of the power cable 1 and even greatly reduces the service life of the cable. The sheath protector 313 can limit the induced voltage and the fault overvoltage on the metal sheath (or metal sheath) of the power cable 1; the grounding copper bar 314 is used for grounding of the cable copper shield and the cable armor layer, so that the working stability of the circuit system of the improved equipment is ensured, the generated static electricity is discharged, and safety guarantee is provided for workers.
The embodiment of the utility model provides an in, be provided with box installing support 315 on the seal housing, be located the box 21 bottom around, have four supports that can supply to fix, fixed equipment that can be convenient, equipment can the side dress on the wall of cable shaft, also can tie the dress subaerial at the cable shaft, perhaps on the support.
The embodiment of the utility model provides an in, seal housing is formed by the stainless steel panel beating preparation that thickness is 2.0-3mm, panel combination department adopts the full weld to guarantee the leakproofness of box 21, seal housing divides into box 21 and apron 22, box 21 upper portion a week has the panel beating hem that sealed fastening used, there are a plurality of bolt holes that are used for fastening sealing on the hem, apron lock department has the sealing strip that is used for the crimping to seal up, after apron 22 and box 21 lock, can play the full seal effect, this box 21 primary action is the power cable 1 with connecting, cold shrinkage formula seal sheath 34, bi-pass casing seat 31, ground connection copper bar 314, cable sheath protector 313, devices such as high-voltage electrified display 36 seal up in box 21.
The utility model discloses a use:
now, a power cable A is connected with a power cable B, the power cable A sequentially passes through a cold-shrinkage type sealing sheath 34, a cable outlet connecting cylinder 33 and a cable fixing clamp 35, three phases of the power cable 1 are respectively connected with front plugging cable accessories 37, and the three front plugging cable accessories 37 are plugged into one side socket of a double-pass sleeve seat 31; the power cable B sequentially passes through the cold-shrinkage type sealing sheath 34, the cable outlet connecting cylinder 33 and the cable fixing clamp 35, three phases of the power cable B are respectively connected with the front plug-in cable accessories 37, and the three front plug-in cable accessories 37 are plugged into the other side socket of the double-pass sleeve seat 31; the power cable A and the power cable B are communicated through the two-way sleeve seat 31; and the outgoing cable is fixed by the cable fixing clip 35.
The power cable B is divided into 2 power cables, namely power cables B1 and B2, the power cable B1 sequentially passes through a cold-shrinkage type sealing sheath 34, a cable outlet connecting cylinder 33 and a cable fixing clamp 35, three phases of the power cable B1 are respectively connected with front plug-in cable accessories 37, and the three front plug-in cable accessories 37 are plugged into a socket on the other side of the two-way sleeve seat 31; the power cable B2 sequentially passes through the cold-shrinkage type sealing sheath 34, the cable outlet connecting cylinder 33 and the cable fixing clamp 35, three phases of the power cable B2 are respectively connected with the rear plug-in cable accessories 38, the three rear plug-in cable accessories 38 are inserted behind the front plug-in cable accessories 37 on the other side socket of the two-way sleeve seat 31 and are blocked by the insulating plugs 312; meanwhile, the outgoing cables are fixed by the cable fixing clamp 35, and the power cable B is divided into power cables B1 and B2.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A high-voltage power cable intermediate connection device at least comprises two sections of power cables needing to be connected; it is characterized by also comprising: a sealed shell and a component mounting plate; the component mounting plate is arranged in the sealed shell; a bi-pass sleeve seat is arranged on the component mounting plate; two connecting ends of the two-way sleeve seat are respectively connected with the power cable.
2. A high voltage power cable intermediate connection apparatus as claimed in claim 1, wherein said hermetic case comprises a case body and a cover plate; the cover plate is buckled with the box body, and an annular sealing strip is arranged on the cover plate.
3. The intermediate connection device for high-voltage power cables as claimed in claim 1, wherein the two-way bushing holder is mounted on the component mounting plate by a metal bead.
4. The intermediate connection device for high-voltage power cables as claimed in claim 1, wherein cable outlet connecting cylinders are provided on side surfaces of both ends of the sealed housing; the cable outgoing connecting cylinder is hermetically welded with the box body, the outer end of the outgoing connecting cylinder is sleeved with a cold-shrinkage sealing sheath, and a power cable penetrates through the cold-shrinkage sealing sheath and the outgoing connecting cylinder; after the cable terminal accessory is installed and constructed, the outgoing cable is fixed on the cable fixing clamp.
5. The high-voltage power cable intermediate connection device as claimed in claim 3, wherein a capacitive belt sensor is disposed at a bottom of the two-way bushing seat, and the capacitive belt sensor is connected to the high-voltage belt display through a secondary wire.
6. The intermediate connection device for the high-voltage power cable according to claim 1, wherein the two-way sleeve seats are respectively connected with a front plug-in cable accessory and a rear plug-in cable accessory; the front plug cable accessory and the rear plug cable accessory are respectively connected with the power cable.
7. A high voltage power cable intermediate connection apparatus as claimed in claim 5, wherein said hermetic shell is provided with a viewing aperture; the observation holes are divided into an electrified display observation hole and an operation observation hole; the live display observation hole is arranged on the side wall of the installation position of the high-voltage live display; the operation observation hole is arranged on the side wall of the mounting position of the two-way sleeve seat.
8. The intermediate connection device for high-voltage power cables as claimed in claim 6, wherein the rear-plug cable accessories are plugged to branch the power cables, and an insulation plug is arranged between the rear-plug cable accessories.
9. A high voltage power cable intermediate connection apparatus as claimed in claim 1 or 3, further comprising a sheath protector and a ground copper bar; the grounding copper bar is installed on the component installation plate, the component installation plate is connected with the sealing shell, a grounding bolt is arranged outside the sealing shell, and all grounding wires of the cable terminal accessory are connected to the grounding copper bar; the cable metal sheath is grounded and arranged at the upper end of the cable sheath protector, and the lower end of the cable sheath protector is grounded.
10. A high voltage power cable intermediate connection apparatus as claimed in any one of claims 1 to 8, wherein a case mounting bracket and a ground bolt are provided on the sealed housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386398.1U CN210517760U (en) | 2019-08-23 | 2019-08-23 | Intermediate connecting device for high-voltage power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921386398.1U CN210517760U (en) | 2019-08-23 | 2019-08-23 | Intermediate connecting device for high-voltage power cable |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210517760U true CN210517760U (en) | 2020-05-12 |
Family
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| CN201921386398.1U Active CN210517760U (en) | 2019-08-23 | 2019-08-23 | Intermediate connecting device for high-voltage power cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799580A (en) * | 2020-08-06 | 2020-10-20 | 黄如兰 | High-tightness connector for submarine cable connection |
| CN112993920A (en) * | 2021-03-03 | 2021-06-18 | 广东安恒电力科技有限公司 | Cable grounding box and installation method thereof |
| CN114597681A (en) * | 2022-03-02 | 2022-06-07 | 浙江运达风电股份有限公司 | 10kV medium-voltage cable connecting assembly and method in tower barrel of wind generating set |
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2019
- 2019-08-23 CN CN201921386398.1U patent/CN210517760U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111799580A (en) * | 2020-08-06 | 2020-10-20 | 黄如兰 | High-tightness connector for submarine cable connection |
| CN112993920A (en) * | 2021-03-03 | 2021-06-18 | 广东安恒电力科技有限公司 | Cable grounding box and installation method thereof |
| CN114597681A (en) * | 2022-03-02 | 2022-06-07 | 浙江运达风电股份有限公司 | 10kV medium-voltage cable connecting assembly and method in tower barrel of wind generating set |
| CN114597681B (en) * | 2022-03-02 | 2024-05-17 | 运达能源科技集团股份有限公司 | 10KV medium-voltage cable connection assembly and method in tower barrel of wind generating set |
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