Novel lightning protection downlead disconnection card protection device

Abstract

The utility model relates to the technical field of lightning protection, and discloses a novel lightning protection downlead disconnection card protection device which comprises an insulation protection sleeve and a disconnection module. The insulating protective sleeve is provided with a cavity for installing the disconnection module. A disconnection port of the downlead is located in the cavity to form a grounding downlead protruding end and a non-grounding downlead protruding end, and threaded holes are formed in the grounding downlead protruding end and the non-grounding downlead protruding end respectively. The disconnection module comprises a movable part, a disconnection clamp and a fixed part, the fixed part is located in the cavity and fixedly connected with the insulation protection sleeve, the disconnection clamp is located on the side face, close to the fixed part, of the movable part and fixedly connected with the movable part, and the movable part, the disconnection clamp and the fixed part are each provided with at least two threaded holes; wherein two of the threaded holes are matched with the threaded holes in the protruding end of the grounding downlead and the protruding end of the non-grounding downlead respectively. The movable part, the disconnection card, the down lead and the fixed part are fixedly connected in sequence through bolts; the device is simple in structure, convenient to mount and dismount and capable of effectively preventing the disconnection card from being eroded and damaged.

Description

Technical Field

[0001] The utility model relates to the technical field of lightning protection, in particular to a lightning protection downconductor disconnect card protection device. Background Art

[0002] The main function of the down conductor is to conduct the lightning current from the lightning rod to the conductor of the grounding device. According to the provisions of 7.1.8, paragraph 5 of GB 55024-2022: "The part of the lightning protection leakage down conductor below 2.7m in height should be covered with an insulating protection tube with a 100kV impulse voltage (1.2 / 50us waveform)". According to the provisions of 5.5.2.8.1, paragraph a of GB / T 21431-2023, "When multiple dedicated down conductors are used, a disconnect card should be installed on each down conductor between 0.3m and 1.8m from the ground". The main function of installing a disconnect card on the down conductor is to disconnect the disconnect card of the down conductor during the annual regular inspection and measure the grounding resistance of the grounding device of each down conductor. Since the down conductor is equipped with a 2.7-meter insulating protective sleeve, the disconnect card installed between 0.3m and 1.8m from the ground cannot be disconnected; at the same time, since the disconnect card has been completely wrapped by the protective tube, if there is already a 2.7-meter protective tube during on-site inspection, it is impossible to check whether the down conductor has been equipped with a disconnect card. The existing disconnect card protection box in the prior art has poor waterproof effect, which can easily cause the disconnect card to rust and fail, and the disconnect card protection box is easy to fall off, causing the disconnect card to be exposed. Utility Model Content

[0003] In view of the existing technical problems, the purpose of the utility model is to provide a down conductor disconnect card protection device which has a simple structure, good waterproof effect and is not easy to fall off.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A novel lightning protection down conductor disconnect card protection device, the protection device comprises an insulating protection sleeve and a disconnect module; the insulating protection sleeve is provided with an opening, through which the insulating protection sleeve extends into the insulating protection sleeve to form a cavity for installing the disconnect module, the size of the cavity matches the disconnect module and the disconnect interface of the down conductor is located in the cavity to form a grounded down conductor protruding end and a non-grounded down conductor protruding end, the grounded down conductor protruding end and the non-grounded down conductor protruding end are respectively provided with threaded holes; the disconnect module comprises a movable part, a disconnect card and a fixed part, the fixed part The movable part, the disconnect card and the fixed part are each provided with at least two threaded holes, two of which respectively match the threaded holes on the protruding end of the grounding down conductor and the protruding end of the non-grounding down conductor, and the movable part, the protruding end of the grounding down conductor and the protruding end of the non-grounding down conductor are all provided with through threaded holes; the movable part, the disconnect card, the down conductor and the fixed part are fixedly connected in sequence by bolts, and the movable part and the fixed part are both made of insulating material.

[0006] Through the above technical solution, when detecting the grounding resistance of the grounding device of the down conductor, it is only necessary to loosen the bolts to separate the movable part and the disconnect card from the fixed part, and then pull them out of the cavity to measure the grounding resistance of the grounding device. After the measurement, the movable part and the disconnect card are reinserted into the cavity and fixedly connected with the fixed part. The whole operation process is simple and convenient. The overall structure of the device is simple and easy to install and disassemble. While protecting the disconnect card from rust, it can better fit with the insulating protection sleeve to play a supporting role, which can reduce the damage rate of the insulating protection sleeve at the installation of the disconnect card and extend its service life.

[0007] Furthermore, a cover plate is provided on a side of the movable portion away from the disconnect card, and the cover plate is buckled and fixed to the movable portion.

[0008] Furthermore, one end of the cover plate is hingedly fixed to the movable part and the other end opposite thereto is provided with a lock.

[0009] Furthermore, a groove is provided on a side of the cover plate close to the movable part, a waterproof sealing layer is provided inside the groove, and the waterproof sealing layer is embedded in the groove and fixed.

[0010] Furthermore, a rectangular compartment suitable for installing disconnect cards of other shapes is provided on a side of the movable portion close to the disconnect card.

[0011] Furthermore, a sealing rubber strip is provided at the contact point between the movable part and the opening.

[0012] Furthermore, the movable part and the disconnect card are fixedly connected by additional bolts and nuts.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: the down conductor disconnect card protection device is not only simple in structure and easy to install and disassemble, but also can protect the disconnect card from rust while better fitting with the insulating protection sleeve to play a supporting role, thereby reducing the damage rate of the insulating protection sleeve at the disconnect card installation location and extending its service life; at the same time, a cover plate, a waterproof sealing layer, and a sealing rubber strip are provided to further prevent erosion by rain and air and extend the service life of the device; a rectangular bin is provided on one side of the movable part close to the disconnect card, which is suitable for disconnect cards such as bow-shaped or other shaped disconnect cards; the disconnect card and the movable part are fixedly connected with additional bolts and nuts, which facilitates the installation and disassembly of the disconnect card. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the insulating protective sleeve in the utility model;

[0015] Figure 2 It is a structural schematic diagram of the disconnect module in the utility model;

[0016] Figure numerals: 1. Insulating protection sleeve; 2. Disconnect module; 3. Opening; 4. Protruding end of grounding down conductor; 5. Protruding end of non-grounding down conductor; 6. Threaded hole; 7. Movable part; 8. Disconnect card; 9. Fixed part; 10. Cover plate; 11. Groove. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] like Figure 1 and Figure 2As shown, a novel lightning protection down conductor disconnect card 8 protection device, the protection device comprises an insulating protection sleeve 1 and a disconnect module 2. An opening 3 is provided on the insulating protection sleeve 1, and a cavity for installing the disconnect module 2 is formed through the opening 3 to extend into the insulating protection sleeve 1, the size of the cavity matches the disconnect module 2, and the disconnect interface of the down conductor is located in the cavity so that the down conductor forms a grounded down conductor protrusion 4 and a non-grounded down conductor protrusion 5, and threaded holes 6 are respectively provided on the grounded down conductor protrusion 4 and the non-grounded down conductor protrusion 5 (as described below, for fixed connection with the disconnect card 8); the disconnect module 2 comprises a movable part 7, a disconnect card 8 and a fixed part 9, the fixed part 9 is located in the cavity and is fixedly connected to the insulating protection sleeve 1, and the disconnect card 8 is located in the movable part 7. The movable part 7 is close to one side of the fixed part 9 and is fixedly connected to the movable part 7; at least two threaded holes 6 are provided on the movable part 7, the disconnect card 8, and the fixed part 9, two of which are matched with the threaded holes 6 on the grounding down conductor protrusion 4 and the non-grounding down conductor protrusion 5 respectively; the threaded holes 6 provided on the movable part 7, the grounding down conductor protrusion 4 and the non-grounding down conductor protrusion 5 are all through threaded holes 6; the movable part 7, the disconnect card 8, the down conductor (the grounding down conductor protrusion 4 and the non-grounding down conductor protrusion 5) and the fixed part 9 are fixedly connected by bolts in sequence; the movable part 7 and the fixed part 9 are both made of insulating materials. Preferably, the movable part 7 and the disconnect card 8 are fixedly connected by another bolt and nut.

[0019] In one embodiment, a cover plate 10 is further provided on a side of the movable part 7 away from the disconnect card 8, and the cover plate 10 and the movable part 7 can be fixedly connected by buckling, fitting or clamping. Preferably, one end of the cover plate 10 is hingedly fixed to the movable part 7 and the other end opposite thereto is provided with a lock. As is well known to those skilled in the art, other locking methods can also be used to connect the cover plate 10 and the movable part 7. Further preferably, a groove 11 is provided on a side of the cover plate 10 close to the movable part 7, and a waterproof sealing layer is provided inside the groove 11, and the waterproof sealing layer is embedded in the groove 11 and fixed.

[0020] In one embodiment, a rectangular compartment suitable for installing disconnect cards 8 of other shapes is further provided on one side of the movable portion 7 close to the disconnect card 8. In one embodiment, a sealing rubber strip is further provided at the contact point between the movable portion 7 and the opening 3.

[0021] In specific implementation, the size of the disconnect module 2 is set according to the actual down conductor installation requirements. In specific implementation, the movable part 7 and the fixed part 9 can be made of rubber insulating material or other new polymer insulating materials. In specific implementation, the cover plate 10 is also made of insulating material.

[0022] The working process and beneficial effects of the utility model are as follows: during installation, after the insulating protection sleeve is installed, the fixing part is placed in the cavity and fixed to the insulating protection sleeve, and two bolts are respectively inserted into the two threaded holes on the movable part and the disconnect card, so that one end of the disconnect card is connected to the protruding end of the grounding down conductor, and the other end is connected to the protruding end of the non-grounding down conductor, and then screwed into the two threaded holes of the fixing part to complete the installation; when detecting the grounding resistance of the grounding device of the down conductor, it is only necessary to loosen the bolts to separate the movable part and the disconnect card from the fixing part, and then pull them out of the cavity to measure the grounding resistance of the grounding device. After the measurement is completed, the movable part and the disconnect card are reinserted into the cavity to be fixedly connected to the fixing part. The beneficial effects of the utility model are as follows: the down conductor disconnect card protection device is not only simple in structure and convenient to install and disassemble, but also can protect the disconnect card from being easily corroded while better fitting with the insulating protection sleeve to play a supporting role, thereby reducing the damage rate of the insulating protection sleeve at the disconnect card installation location and extending its service life; at the same time, the cover plate, the waterproof sealing layer and the sealing rubber strip are provided to further prevent erosion by rain and air and extend the service life of the device; a rectangular bin is provided on one side of the movable part close to the disconnect card, which is suitable for disconnect cards of bow shape or other shapes; the disconnect card and the movable part are fixedly connected with another bolt and nut, which is convenient for the installation and disassembly of the disconnect card.

[0023] The above are only preferred implementations of the utility model. The protection scope of the utility model is not limited to the above embodiments. All technical solutions under the idea of ​​the utility model belong to the protection scope of the utility model. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the utility model should also be regarded as the protection scope of the utility model.

Claims

1. A new type of lightning protection down conductor disconnect card protection device, characterized in that: The protection device comprises an insulating protection sleeve and a disconnect module; The insulating protection sleeve is provided with an opening, and a cavity for installing the disconnect module is formed through the opening and extending into the insulating protection sleeve. The size of the cavity matches the disconnect module, and the disconnect interface of the down conductor is located in the cavity to form a grounding down conductor protruding end and a non-grounding down conductor protruding end, and the grounding down conductor protruding end and the non-grounding down conductor protruding end are respectively provided with threaded holes; The disconnect module comprises a movable part, a disconnect card and a fixed part, wherein the fixed part is located in the cavity and is fixedly connected to the insulating protection sleeve, the disconnect card is located on a side of the movable part close to the fixed part and is fixedly connected to the movable part, and the movable part, the disconnect card and the fixed part are all provided with two threaded holes, which respectively match the threaded holes on the protruding end of the grounding down conductor and the protruding end of the non-grounding down conductor; the movable part, the protruding end of the grounding down conductor and the protruding end of the non-grounding down conductor are all provided with through threaded holes; The movable part, the disconnect card, the protruding end of the grounding down conductor, the protruding end of the non-grounding down conductor and the fixed part are fixedly connected in sequence by bolts, and the movable part and the fixed part are both made of insulating materials.

2. The lightning protection downconductor disconnect card protection device according to claim 1, characterized in that: A cover plate is also provided on a side of the movable part away from the disconnect card, and the cover plate is buckled or embedded with the movable part for fixation.

3. The lightning protection down conductor disconnect card protection device according to claim 2, characterized in that: One end of the cover plate is hinged and fixed to the movable part, and the other end opposite to the cover plate is provided with a lock buckle.

4. The lightning protection downconductor disconnect card protection device according to claim 3, characterized in that: A groove is provided on one side of the cover plate close to the movable part, a waterproof sealing layer is provided inside the groove, and the waterproof sealing layer is embedded in the groove and fixed.

5. The lightning protection downconductor disconnect card protection device according to claim 1, characterized in that: A rectangular compartment suitable for installing the disconnect card is provided on a side of the movable portion close to the disconnect card.

6. The lightning protection downconductor disconnect card protection device according to claim 1, characterized in that: A detachable sealing rubber strip is also provided at the contact point between the movable part and the opening.

7. The lightning protection downconductor disconnect card protection device according to claim 1, characterized in that: The movable part and the disconnect card are fixedly connected by other bolts and nuts.

Images