CN217134111U - Novel large-capacity rear-connected lightning arrester - Google Patents

Abstract

The utility model discloses a novel large-capacity rear-connected arrester; the utility model comprises a sleeve, a lightning protection installation component and a shielding connection component, wherein the lightning protection installation component is arranged and connected in the sleeve, the shielding connection component is arranged and connected in the sleeve, one end of the sleeve is embedded and connected with a front joint, a connection stud is twisted in after the front joint is assembled, the sleeve is a part of the switch equipment and is a part for connecting a cable, the lightning arrester is connected from the back of a cable connector, namely a front connector, the back of the front connector can be connected with the lightning arrester, or the sleeve can be sleeved into the back of the front connector and connected with the lightning arrester, the lightning arrester is compressed by a nut, is installed in an insulating plug, is covered with a shielding case, is connected with a ground wire, is installed, prolongs the service life of the lightning arrester, reduces the frequency of thermal breakdown of the lightning arrester, increases the diameter of a zinc oxide valve plate of the lightning arrester, increases the outer diameter of a valve plate core rod, and increases the corresponding lightning arrester conforming to a jacket so as to be suitable for regions with frequent lightning strikes in the south.

Description

Novel large-capacity rear-connected lightning arrester

Technical Field

The utility model relates to an equipment technical field of arrester specifically is a novel large capacity connects formula arrester after in cubical switchboard.

Background

A lightning arrester: an electric appliance for protecting electric equipment from high transient overvoltage caused by lightning stroke, limiting follow current time and normally limiting follow current amplitude. Arresters are sometimes also referred to as overvoltage protectors, overvoltage limiters, arresters, an electrical appliance for protecting electrical equipment from high transient overvoltages and limiting the freewheel time and also limiting the freewheel amplitude. The term encompasses any external clearance necessary for the proper functioning of the appliance in operational installation, whether or not as a component of the whole, the arrester being usually connected between the network conductors and the earth, but sometimes also beside the windings of the appliance or between the conductors, sometimes also called overvoltage protector, overvoltage limiter, GB/T2900.12-2008, the arrester being another important device often used when communication cables are protected against lightning. The following describes the relevant knowledge of the arrester.

The invention discloses a bus duct convenient to mount, which comprises a top plate, a silica gel sheet, a pressing plate adjusting bolt, a pressing plate, a copper bar, a sliding block, a U-shaped shell, a copper bar clamping seat, a threaded column, a threaded cylinder, a mounting bottom plate, a clamping block, a fastening bolt, a U-shaped mounting plate end cover, a sliding groove and a copper bar jack. According to the invention, the silica gel sheet is attached to the bottom of the pressing plate, the silica gel sheet can well fix the copper bar to prevent the copper bar from moving, and can well take away part of heat generated during the operation of the bus duct, so that the heat dissipation of the bus duct is facilitated.

However, in the existing 10kV station type shielding rear-connected lightning arrester for switch cabinets, the rated repetitive transfer charge amount is 0.3C (2020 national standard of lightning arrester, which requires 2ms square wave current 150A in old national standard), while in areas with frequent lightning strikes in south, this parameter cannot meet the requirement, and in order to prolong the service life of the lightning arrester and reduce the frequency of thermal breakdown of the lightning arrester, it is necessary to increase the rated repetitive transfer charge amount of the lightning arrester to 0.8C, which is equivalent to 2ms square wave current 400A. However, if the parameter needs to be improved, the diameter of the zinc oxide valve plate of the lightning arrester needs to be increased, the outer diameter of the valve plate core rod caused by the increase of the diameter of the zinc oxide valve plate needs to be increased, and the corresponding lightning arrester conforming to the outer sleeve needs to be increased.

Disclosure of Invention

An object of the utility model is to provide a novel connect formula arrester behind large capacity to solve the problem that proposes in the above-mentioned background art.

In order to solve the technical problem, the utility model provides a following technical scheme: the lightning protection device comprises a sleeve, a lightning protection installation component and a shielding connection component, wherein the lightning protection installation component is arranged and connected in the sleeve, the shielding connection component is arranged and connected in the sleeve, a front connector is embedded and connected at one end of the sleeve, and a cable is detachably connected to one side of the front connector;

the lightning-protection installation assembly comprises a lightning arrester, a valve block core rod is embedded and connected inside the lightning arrester, one end of the lightning arrester can be detachably connected with a rear cover, a compression bolt can be detachably connected to the surface of the rear cover, one end of the rear cover is connected with a grounding wire in a matched mode, aluminum electrodes are embedded and connected at two ends inside the valve block core rod, a zinc oxide valve is connected inside the valve block core rod in a matched mode, a shielding layer can be detachably connected to the surface of the valve block core rod, and a silica gel layer is coated on the surfaces of the valve block core rod and the shielding layer.

Preferably, the shielding connection assembly comprises an outer sleeve, and the surface of the sleeve is detachably connected with the outer sleeve

Preferably, one end of the external sleeve is embedded and connected with a connecting terminal, and a valve plate core rod is embedded and connected in the external sleeve.

Preferably, the inner part of the external connection sleeve is embedded and connected with an external shielding layer, and the inner side of the external shielding layer is embedded and connected with an internal shielding layer.

Preferably, an insulating layer is arranged and connected inside the external sleeve.

Preferably, the surface of the external sleeve is provided with a grounding port.

Preferably, the surface of the sleeve is embedded and connected with a shielding cover, and the surface of the sleeve is detachably connected with an insulating plug.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses, during the use, the plug needs to use with the cooperation of the compound overcoat of rubber, and the one deck silicon rubber material of repackaging is behind the plug encapsulation, and silicon rubber is the mould pressing thermoforming, guarantees to be insulating with the cooperation of compound overcoat. The diameter of the valve plate is 42mm, the valve plate is coated with insulating materials with the thickness of 3mm and the outer diameter of 48mm, and then the valve plate is coated with a layer of silicon rubber with the thickness of 3mm, the outer diameter of the whole body is 54mm, the length of the whole body is 169mm, the lightning arrester is generally matched with a front connector for use, so that the outer sleeve is designed to be a rear connection type, the matched part of the outer sleeve and the front connector is designed according to the standard front connector, the part for installing the lightning arrester core rod is matched according to the length 169mm and the diameter 54mm of the core rod, the inner diameter of the composite outer sleeve is designed to be 50mm, the height is 210mm, the insulating level is designed according to the requirement of 10kV, the insulating property of ethylene propylene diene monomer is designed according to the insulating thickness of 8.75 mm. The inner shielding layer is designed to carry out voltage-sharing treatment on electric fields such as internal connecting bolts and the like, so that discharge at the connecting part is avoided. The outer shielding layer is designed and grounded to achieve the purpose of full shielding, one end of a valve block core rod is provided with a connecting terminal, the core rod and a composite outer sleeve are cleaned and dried, the matching surface is coated with silicone grease, the core rod is sleeved in the composite outer sleeve, the tail end of the core rod is provided with a rear cover, a bolt is screwed in, a ground wire is connected, a nut is used for compressing the ground wire, another ground wire is arranged at the position where the shielding layer of the composite outer sleeve is connected with the ground wire, and a rear lightning arrester is arranged behind a front connector and is connected with the front connector in parallel. After the front connector is assembled, the connecting stud is twisted in, the front connector is sleeved with a rear lightning arrester, the front connector is tightly pressed by a nut, an insulating plug is assembled, a shielding cover is covered, a ground wire is connected, the installation is completed, the service life of the lightning arrester is prolonged, the thermal collapse frequency of the lightning arrester is reduced, the rated repetitive transfer charge quantity of the lightning arrester is increased to 0.8C, which is equivalent to 2ms square wave current 400A, the diameter of a zinc oxide valve plate of the lightning arrester is increased, the outer diameter of a valve plate core rod is increased, the corresponding lightning arrester conforms to the outer sleeve and is also increased, and therefore, the lightning arrester is redesigned to be suitable for areas with frequent lightning strikes in the south.

Drawings

Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;

fig. 2 is a schematic structural view of a splicing ratio rear-end arrester according to an embodiment of the present invention;

FIG. 3 is a schematic view of a shielding rear-connected jacket according to an embodiment of the present invention;

fig. 4 is a schematic view of a valve core rod according to an embodiment of the present invention.

In the figure: 1. a sleeve; 2. a front joint; 3. a cable; 401. a lightning arrester; 402. valve plate core rod; 403. a rear cover; 404. a hold-down bolt; 405. a ground line; 406. a zinc oxide valve plate; 407. an aluminum electrode; 408. a silica gel layer; 5. a shield case; 6. an insulating plug; 7. a connecting bolt; 801. an external connecting sleeve; 802. a connection terminal; 803. an outer shield layer; 804. an inner shield layer; 805. an insulating layer; 806. and a ground port.

Detailed Description

In order to facilitate the problem of solution, the embodiment of the utility model provides a novel connect formula arrester behind large capacity. The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying 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.

Example 1

Please refer to fig. 1-4, this embodiment provides a casing 1, a lightning protection installation component and a shielding connection component, the inside of the casing 1 is connected with the lightning protection installation component, the inside of the casing 1 is connected with the shielding connection component, one end of the casing 1 is connected with the front connector 2 in an embedded manner, one side of the front connector 2 is connected with the cable 3 in a detachable manner, the lightning protection installation component comprises a lightning arrester 401, the inside of the lightning arrester 401 is connected with a valve plate core rod 402 in an embedded manner, one end of the lightning arrester 401 is connected with a rear cover 403 in a detachable manner, the surface of the rear cover 403 is connected with a hold-down bolt 404 in a detachable manner, one end of the rear cover 403 is connected with a ground wire 405 in a matched manner, two ends of the inside of the valve plate core rod 402 are connected with an aluminum electrode 407 in an embedded manner, the inside of the valve plate core rod 402 is connected with a zinc oxide valve, the surface of the valve plate core rod 402 is connected with a shielding layer in a detachable manner, and the surfaces of the valve plate 402 and the shielding layer are coated with a silica gel layer 408.

In this embodiment, a connecting terminal 802 is installed at one end of a valve sheet core rod 402, the core rod and the composite outer sleeve are cleaned, the rear matching surface is coated with silicone grease, the core rod is sleeved in the composite outer sleeve, a rear cover 403 is installed at the tail end, a bolt is screwed in, a ground wire 405 is installed, a nut is used for compressing the ground wire 405, another ground wire is installed at the position of a shielding layer of the composite outer sleeve, the rear lightning arrester 401 is installed behind the front connector 2 and is connected with the front connector 2 in parallel. After the front joint 2 is assembled, the connecting stud is twisted in, then the rear connector is sleeved with the lightning arrester 401, the lightning arrester is tightly pressed by a nut, the insulating plug 6 is assembled, the shielding cover 5 is covered, the ground wire is connected, the installation is completed, the service life of the lightning arrester 401 is prolonged, and the frequency of thermal breakdown of the lightning arrester 401 is reduced

Example 2

Referring to fig. 1-4, a further improvement is made on the basis of embodiment 1: shielding coupling assembling includes outer adapter sleeve 801, 1 surface of sleeve pipe can be dismantled and be connected with outer adapter sleeve 801, the inside inlay of outer adapter sleeve 801 is connected with connecting terminal 802, the inside inlay of outer adapter sleeve 801 is connected with valve block plug 402, the inside inlay of outer adapter sleeve 801 is connected with outer shielding layer 803, outer shielding layer 803 inboard is inlayed and is connected with inner shielding layer 804, the inside setting of outer adapter sleeve 801 is connected with insulating layer 805, ground connection mouth 806 has been seted up on outer adapter sleeve 801 surface, 1 surface of sleeve pipe is inlayed and is connected with shield cover 5, 1 surface of sleeve pipe can be dismantled and be connected with insulating end cap 6, during the use, the plug needs to use with the compound overcoat cooperation of rubber, the plug encapsulates the back, wrap one deck silicon rubber material again, silicon rubber is the mould pressing thermoforming, guarantee to be insulating with the cooperation of compound overcoat. The diameter of a valve plate is 42mm, the thickness of the valve plate is 3mm, the outer diameter of the valve plate is 48mm, the valve plate is further coated with a layer of silicon rubber, the outer diameter of the whole valve plate is 54mm, the length of the whole valve plate is 169mm, the lightning arrester 401 is generally matched with the front connector 2 for use, so that the outer sleeve is designed to be in a rear connection mode, a sleeve of the lightning arrester is a part of switch equipment and is a part for connecting a cable, the lightning arrester is only connected from the rear of the cable connector, namely the front connector, the rear of the front connector can be connected with the lightning arrester or not, the sleeve is designed to be matched with the front connector 2 according to the standard, the position where the core rod of the lightning arrester 401 is arranged is matched according to the length 169mm and the diameter of 54mm, the inner diameter of the composite outer sleeve is designed to be 50mm, the height is 210mm, the insulating level is designed according to the requirement of 10kV, and the insulating property of ethylene propylene diene monomer is designed to have the insulating thickness of 8.75 mm. The inner shield layer 804 is designed to equalize the voltage of the electric field of the internal connection bolt 7 and the like, thereby preventing the discharge at the connection. The outer shielding layer 803 is designed, the outer shielding layer 803 is grounded, the purpose of full shielding is achieved, the rated repeated transfer charge quantity of the lightning arrester 401 is improved to 0.8C, which is equivalent to 2ms square wave current 400A, the diameter of a zinc oxide valve block 406 of the lightning arrester 401 is increased, the outer diameter of a valve block core rod 402 is increased, the corresponding lightning arrester 401 conforms to the outer sleeve and is also increased, and therefore, the lightning arrester 401 is redesigned to be suitable for areas with frequent lightning strikes in the south.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (7)

1. The utility model provides a novel connect formula arrester behind large capacity, includes sleeve pipe (1), lightning-arrest installation component and shielding connection subassembly, its characterized in that: a lightning protection installation component is arranged and connected in the sleeve (1), a shielding connection component is arranged and connected in the sleeve (1), a front connector (2) is embedded and connected at one end of the sleeve (1), and a cable (3) is detachably connected at one side of the front connector (2);

the lightning-arrest installation component includes the arrester, arrester (401) inside is inlayed and is connected with valve block plug (402), arrester (401) one end can be dismantled and is connected with back lid (403), back lid (403) surface can be dismantled and is connected with housing bolt (404), back lid (403) one end cooperation is connected with earth connection (405), the inside both ends of valve block plug (402) are inlayed and are connected with aluminium electrode (407), valve block plug (402) inside cooperation is connected with the zinc oxide valve, valve block plug (402) surface can be dismantled and is connected with the shielding layer, the coating of valve block plug (402) and shielding layer surface has silica gel layer (408).

2. A novel high-capacity rear-connected arrester as claimed in claim 1, characterized in that: the shielding connection assembly comprises an outer connecting sleeve (801), wherein the outer connecting sleeve (801) is detachably connected to the surface of the sleeve (1).

3. A novel high-capacity rear-connected arrester as claimed in claim 2, characterized in that: one end of the external connecting sleeve (801) is embedded and connected with a connecting terminal (802), and a valve sheet core rod (402) is embedded and connected inside the external connecting sleeve (801).

4. A novel high-capacity rear-connected arrester as claimed in claim 2, characterized in that: the inner side of the outer shielding layer (803) is connected with an inner shielding layer (804) in an embedded manner.

5. A novel high-capacity rear-connected arrester as claimed in claim 2, characterized in that: an insulating layer (805) is arranged and connected inside the external connecting sleeve (801).

6. A novel high-capacity rear-connected arrester as claimed in claim 2, characterized in that: the surface of the external connecting sleeve (801) is provided with a grounding port (806).

7. A novel high-capacity rear-connected arrester as claimed in claim 1, characterized in that: the surface of the sleeve (1) is embedded and connected with a shielding cover (5), and the surface of the sleeve (1) is detachably connected with an insulating plug (6).

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