CN212723154U

CN212723154U - Monitor structure for lightning arrester

Info

Publication number: CN212723154U
Application number: CN202021587444.7U
Authority: CN
Inventors: 胡国强; 周福军
Original assignee: Nanjing Fao Electric Co ltd
Current assignee: Nanjing Fao Electric Co ltd
Priority date: 2020-08-03
Filing date: 2020-08-03
Publication date: 2021-03-16
Anticipated expiration: 2030-08-03

Abstract

The utility model relates to a monitor structure for a lightning arrester, which comprises a frame; counting a pointer: the counting pointer is rotatably arranged on the rack; a drive unit: comprises a ratchet wheel: is coaxially fixed with the counting pointer; a pawl: the hinge joint is connected with the frame and matched with the ratchet wheel; a pusher member: the ratchet wheel is coaxially fixed with the pawl and used for pushing the ratchet wheel to rotate; a power sheet: the power sheet is coaxially fixed with the pawl and is made of a magnet; electromagnet: the electromagnet is fixed in the rack, two poles of the electromagnet are connected into the lightning arrester circuit, and the electromagnet is used for attracting the power sheet to rotate around the axis of the power sheet; a pulling assembly: the power sheet is arranged on the rack and used for pulling the power sheet to be far away from the electromagnet; when the electromagnet is powered off, the electromagnet is separated from the power sheet, the pawl is in abutting fit with the ratchet wheel, and the pushing piece is separated from the ratchet wheel; when the electromagnet is electrified, the electromagnet is attached to the power sheet, the pawl is separated from the ratchet wheel, and the pushing piece is in butt fit with the ratchet wheel.

Description

Monitor structure for lightning arrester

Technical Field

The utility model belongs to the technical field of the technique of arrester and specifically relates to a monitor structure for arrester is related to.

Background

An arrester for an electrical appliance for protecting electrical equipment from high transient overvoltage and limiting the freewheel time and also for normally limiting the freewheel amplitude.

And the lightning arrester has life, and life is mainly the size of the electric current in the circuit that the lightning arrester is located, assumes that the electric current of passing through in the lightning arrester circuit is A each time, and count the threshold value once, when reaching threshold value certain number of times, need change the lightning arrester.

The above prior art solutions have the following drawbacks:

however, in the prior art, (the display value of the counter displayed on site is often inconsistent with the display value of the counter acquired in the background), there is no device capable of accurately calculating the threshold number, and the lightning arrester can only be replaced by means of regular maintenance, so that the real running condition of replacing the lightning arrester too early or replacing the lightning arrester too late cannot be judged.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, one of the purposes of the utility model is to provide a monitor structure for arrester, when the electric current reaches the threshold value, control count pointer graduation rotates and produces the short circuit signal of telecommunication, realizes the purpose to the real running state effective monitoring of arrester life control.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

a monitor structure for lightning arrester comprises

A frame;

counting a pointer: the counting pointer is rotatably arranged on the rack;

a drive unit: comprises that

Ratchet: is coaxially fixed with the counting pointer;

a pawl: the hinge joint is connected with the frame and matched with the ratchet wheel;

a pusher member: the ratchet wheel is coaxially fixed with the pawl and used for pushing the ratchet wheel to rotate;

a power sheet: the power sheet is coaxially fixed with the pawl and is made of a magnet;

electromagnet: the electromagnet is fixed in the rack, two poles of the electromagnet are connected into the lightning arrester circuit, and the electromagnet is used for attracting the power sheet to rotate around the axis of the power sheet;

a pulling assembly: the power sheet is arranged on the rack and used for pulling the power sheet to be far away from the electromagnet;

when the electromagnet is powered off, the electromagnet is separated from the power sheet, the pawl is in abutting fit with the ratchet wheel, and the pushing piece is separated from the ratchet wheel; when the electromagnet is electrified, the electromagnet is attached to the power sheet, the pawl is separated from the ratchet wheel, and the pushing piece is in butt fit with the ratchet wheel.

The present invention may be further configured in a preferred embodiment as: the rack is provided with a fixed shaft, the fixed shaft is rotatably provided with a rotating part, and the pawl, the pushing piece and the power sheet are fixedly connected to the rotating part.

The present invention may be further configured in a preferred embodiment as: the pulling assembly comprises a base and a tension spring, the base is fixed on the rack, one end of the tension spring is connected to the base, and the other end of the tension spring is connected to a rotating portion, far away from one side of the power sheet, of the fixed shaft.

The present invention may be further configured in a preferred embodiment as: the two ends of the tension spring are provided with hooks, and the base and the rotating part are provided with hanging parts used for clamping, disassembling and connecting the hooks.

The present invention may be further configured in a preferred embodiment as: the power sheet, the rotating part, the tension spring and the base form a conductive path, the electromagnet comprises a shell and an iron core, the two ends of the iron core extend out of the shell, and one end of the iron core is arranged opposite to the power sheet.

The present invention may be further configured in a preferred embodiment as: the power sheet is provided with the shell fragment towards the one side of electro-magnet, the shell fragment is including being fixed in the fixed part on the power sheet and to keeping away from the contact site of power sheet direction bending.

The present invention may be further configured in a preferred embodiment as: the frame includes by upper and lower parallel arrangement's calibrated scale, roof and bottom plate, be provided with the electro-magnet between roof and the bottom plate, one side of keeping away from the roof of calibrated scale is provided with the count pointer, just be provided with the pivot that supports the count pointer on the roof, coaxial being fixed with in the pivot the ratchet.

The present invention may be further configured in a preferred embodiment as: the base is fixed in between roof and the bottom plate, the base is passed to the one end of iron core, just insulating setting between iron core and the base, the pot head that the iron core passed the base is equipped with the insulating piece and is provided with the nut.

To sum up, the utility model discloses a following at least one useful technological effect:

1. when the current reaches a threshold value, the counting pointer is controlled to rotate in an indexing way and generate a short-circuit electric signal, so that the purpose of monitoring the service life of the lightning arrester is realized;

2. the threshold frequency recorded by the counting pointer is consistent with the frequency of remotely monitoring the short-circuit electric signal, so that the service life (real running state) of the lightning arrester is accurately monitored.

Drawings

FIG. 1 is a schematic diagram of the circuit structure of the detector of this embodiment

FIG. 2 is a schematic view of an assembly of a detector structure for a lightning arrester;

FIG. 3 is a schematic view for embodying the structure between the dial and the top plate;

FIG. 4 is a schematic view for embodying a structure between a top plate and a bottom plate;

fig. 5 is a schematic diagram for embodying the structure between the electromagnet and the power sheet.

In the figure, 1, a frame; 11. a base plate; 12. a top plate; 121. a jack; 13. erecting a rod; 14. a dial scale; 141. a male tab; 2. counting a pointer; 21. a fixed shaft; 22. a rotating shaft; 23. a ratchet wheel; 3. a central shaft; 4. a rotating part; 41. a pawl; 42. a pusher member; 5. a power sheet; 51. a spring plate; 511. a fixed part; 512. a contact portion; 6. a base; 61. a tension spring; 62. hooking; 7. a hanging part; 8. an electromagnet; 81. a housing; 82. an iron core; 83. a contact piece; 85. an insulating sheet; 86. a nut; 9. a first lead; 10. and a second conducting wire.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 2-5, a detector structure for arrester includes a frame 1 and a counting pointer 2, the counting pointer 2 is rotatably installed on the frame 1, and a control unit installed in an arrester circuit is provided on the frame 1, the control unit is used for receiving current, when the current reaches a threshold value, the counting pointer 2 is controlled to rotate by a certain angle, and by observing the rotation angle of the counting pointer 2, the service life of the arrester is accurately and quickly judged.

The rack 1 comprises a bottom plate 11, a top plate 12 and a dial 14 which are arranged in parallel from bottom to top, wherein four upright rods 13 are welded between the bottom plate 11 and the top plate 12 at intervals in the circumferential direction, so that the bottom plate 11 and the top plate 12 are fixed. Three convex sheets 141 are formed on the dial plate 14 through cutting and bending, the longest end of each convex sheet 141 is still connected with the dial plate 14 and is arranged as a bent part, three insertion holes 121 are formed in the top plate 12 at intervals in the circumferential direction, the convex sheets 141 are bent towards the direction of the top plate 12, the smaller ends of the convex sheets 141 are embedded into the insertion holes 121, then the smaller ends of the convex sheets 141 are rotated, so that the convex sheets 141 are clamped and fixed in the insertion holes 121, the dial plate 14 and the top plate 12 are fixed, and a complete frame 1 structure is formed.

The top plate 12 is welded with a fixed shaft 21, a rotating shaft 22 is coaxially sleeved outside the fixed shaft 21, one end of the rotating shaft 22 penetrates through the dial 14, the counting pointer 2 is fixed at the end, and a ratchet wheel 23 is coaxially and integrally arranged between the top plate 12 and the dial 14 on the rotating shaft 22 to drive the ratchet wheel 23 to rotate, so that the purpose of controlling the counting pointer 2 to rotate in an indexing manner is achieved.

The control unit comprises a central shaft 3 fixed between a top plate 12 and a bottom plate 11, one end of the central shaft 3 extends between the top plate 12 and a dial plate 14, a rotating part 4 is installed on the central shaft 3, the rotating part 4 is made of a long metal sheet, two ends of the rotating part 4 are bent by ninety degrees and are rotatably installed at two ends of the central shaft 3, and a pawl 41 and a pushing piece 42 are fixedly connected to one end, located on the top plate 12 and one end, located on the dial plate 14, of the rotating part 4; when the pawl 41 is engaged with the ratchet wheel 23, the rotation of the ratchet wheel 23 is locked; when the rotating part 4 is driven to rotate, the rotating part 4 simultaneously drives the pawl 41 to be away from the ratchet wheel 23, and simultaneously, the pushing part 42 is enabled to be close to and push the ratchet wheel 23 to rotate for a certain angle, so that the aim of controlling the counting pointer 2 to rotate and fix is fulfilled.

The control unit further comprises an electromagnet 8 arranged between the bottom plate 11 and the top plate 12, the electromagnet 8 comprises a shell 81 and an iron core 82 arranged in the shell 81, the axis of the electromagnet 8 is horizontally arranged, a power sheet 5 extends on the rotating part 4 positioned between the bottom plate 11 and the top plate 12, the power sheet 5 extends to be aligned with one end of the electromagnet 8, a base 6 is arranged on an upright rod 13 between the bottom plate 11 and the top plate 12, a tension spring 61 is arranged between the base 6 and the rotating part 4, hooks 62 are arranged at two ends of the tension spring 61, a hanging part 7 is arranged on the base 6 and one side of the rotating part 4 far away from the power sheet 5, the hooks 62 of the tension spring 61 are detachably connected to the hanging part 7, and the purpose that two ends of the tension spring 61 are respectively fixed on the base 6 and the rotating part 4 is achieved;

the electromagnet 8 is connected into a lightning arrester circuit, the circuit structure is shown in fig. 1, when the current in the circuit does not reach a threshold value, the attraction force of the electromagnet 8 to the power sheet 5 is smaller than the pulling force of the tension spring 61, so that the rotating part 4 is kept fixed, and the pawl 41 is always matched with the ratchet wheel 23 to limit the rotation of the counting pointer 2; when the current in the circuit reaches or exceeds the threshold value, the electromagnet 8 attracts the power sheet 5 to move, so that the rotating part 4 synchronously drives the pawl 41 and the pushing piece 42 to move, the pawl 41 is separated from the ratchet wheel 23, and the pushing piece 42 drives the ratchet wheel 23 to rotate for a certain angle, thereby realizing the purpose of indexing rotation of the counting pointer 2 and further accurately reflecting the use condition of the lightning arrester.

The shell 81 of the electromagnet 8 is made of an insulating material, two ends of the iron core 82 extend out of the shell 81, one end of the iron core 82 is welded with a fixing piece, the fixing piece is provided with a contact piece 83 between the iron core 82 and the power piece 5, the other end of the iron core penetrates through the base 6, insulating rubber is filled between the iron core 82 and the base 6, one end of the iron core 82 penetrating through the base 6 is sleeved with an insulating piece 85 and is in threaded connection with a nut 86, when the nut 86 is rotated to be fixed, the purpose of fixing the electromagnet 8 is achieved, and meanwhile, the power piece 5, the rotating part 4, the tension spring 61 and the base;

when connecting wire one on base 6 for wire one and base 6 intercommunication, wind around rolling up wire two on iron core 82, and wire two extrusion is fixed in between nut 86 and insulating piece 85, make wire two and iron core 82 intercommunication, when electro-magnet 8 adsorbs power piece 5, power piece 5 and the contact piece 83 butt intercommunication of iron core 82, make the signal of telecommunication of intercommunication formation short circuit between wire one and the wire two, realize the behaviour in service of remote monitoring arrester through accepting this short circuit signal of telecommunication.

Simultaneously one side at power piece 5 towards electro-magnet 8 is provided with shell fragment 51, shell fragment 51 is including being fixed in fixed part 511 on the power piece 5 and to keeping away from the contact site 512 that power piece 5 orientation was buckled, because at manufacturing error, cause the unable attraction power piece 5 of electro-magnet 8 to remove to communicate with iron core 82 easily, through the angle of buckling of adjustment contact site 512, when guaranteeing that electric current reaches the threshold value at every turn, contact piece 83 can be stable communicate with iron core 82 electricity, promote the stability to the arrester control.

The implementation principle of the embodiment is as follows:

the electromagnet 8 is connected in the lightning arrester circuit, the first lead and the second lead are connected in remote monitoring, when the current in the circuit reaches a threshold value, the power sheet 5 is attracted by the electromagnet 8, so that the rotating part 4 drives the pawl 41 and the pushing piece 42 to move, the pawl 41 is separated from the ratchet wheel 23, meanwhile, the pushing piece 42 drives the ratchet wheel 23 to rotate, namely, the counting pointer 2 rotates once, and a short-circuit electric signal is formed between the first lead and the second lead, so that the purpose of remote monitoring is achieved.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. A monitor structure for a lightning arrester, characterized in that: comprises that

A frame (1);

count pointer (2): the counting pointer (2) is rotatably arranged on the rack (1);

a drive unit: comprises that

Ratchet (23): is coaxially fixed with the counting pointer (2);

pawl (41): hinged with the frame (1) and matched with the ratchet wheel (23);

a pusher (42): is coaxially fixed with the pawl (41) and is used for pushing the ratchet wheel (23) to rotate;

power sheet (5): the power sheet (5) is coaxially fixed with the pawl (41) and is made of a magnet;

electromagnet (8): the electromagnet (8) is fixed in the rack (1), two poles of the electromagnet (8) are connected into a lightning arrester circuit, and the electromagnet (8) is used for attracting the power sheet (5) to rotate around the axis of the power sheet;

a pulling assembly: the power sheet (5) is arranged on the rack (1) and used for pulling the power sheet (5) to be far away from the electromagnet (8);

when the electromagnet (8) is powered off, the electromagnet (8) is separated from the power sheet (5), the pawl (41) is in butt fit with the ratchet wheel (23), and the pushing piece (42) is separated from the ratchet wheel (23); when the electromagnet (8) is electrified, the electromagnet (8) is attached to the power sheet (5), the pawl (41) is separated from the ratchet wheel (23), and the pushing piece (42) is in butt fit with the ratchet wheel (23).

2. A monitor structure for a lightning arrester according to claim 1, characterized in that: the improved electric wrench is characterized in that a central shaft (3) is arranged on the rack (1), a rotating part (4) is rotatably arranged on the central shaft (3), and the pawl (41), the pushing part (42) and the power sheet (5) are fixedly connected to the rotating part (4).

3. A monitor structure for a lightning arrester according to claim 2, characterized in that: the pulling assembly comprises a base (6) and a tension spring (61), the base (6) is fixed on the rack (1), one end of the tension spring (61) is connected to the base (6), and the other end of the tension spring is connected to a rotating part (4) on one side, far away from the power sheet (5), of the central shaft (3).

4. A monitor structure for a lightning arrester according to claim 3, characterized in that: both ends of the tension spring (61) are provided with hooks (62), and hanging parts (7) used for clamping and detaching the connecting hooks (62) are arranged on the base (6) and the rotating part (4).

5. A monitor structure for a lightning arrester according to claim 3, characterized in that: the power sheet (5), the rotating part (4), the tension spring (61) and the base (6) form a conductive path, the electromagnet (8) comprises a shell (81) and an iron core (82), the two ends of the iron core (82) extend out of the shell (81), and one end of the iron core (82) is arranged opposite to the power sheet (5).

6. The monitor structure for a lightning arrester according to claim 5, wherein: one side of the power sheet (5) facing the electromagnet (8) is provided with an elastic sheet (51), and the elastic sheet (51) comprises a fixing part (511) fixed on the power sheet (5) and a contact part (512) bent towards the direction far away from the power sheet (5).

7. The monitor structure for a lightning arrester according to claim 5, wherein: frame (1) is including by dial (14), roof (12) and bottom plate (11) of upper and lower parallel arrangement, be provided with electro-magnet (8) between roof (12) and bottom plate (11), one side of keeping away from roof (12) of dial (14) is provided with count pointer (2), just be provided with pivot (22) that support count pointer (2) on roof (12), coaxial being fixed with on pivot (22) ratchet (23).

8. A monitor structure for a lightning arrester according to claim 7, characterized in that: base (6) are fixed in between roof (12) and bottom plate (11), the base is passed to the one end of iron core (82), just insulating setting between iron core (82) and the base, the pot head that iron core (82) passed the base is equipped with insulating piece (85) and is provided with nut (86).