Surge protector thermal tripping signal optical fiber transmission device and surge protector

Abstract

The utility model relates to the field of surge protector equipment, in particular to a surge protector thermal tripping signal optical fiber transmission device and a surge protector. A surge protector thermal tripping signal optical fiber transmission device provided by the utility model comprises a rod body, a chassis member and an optical fiber, the chassis member is provided with two supporting columns, the optical fiber is arranged on the two supporting columns, the rod body is rotatably matched with the chassis member, the rotation axis of the rod body is perpendicular to the extension direction of the optical fiber between the two supporting columns, and the rotation axis of the rod body is perpendicular to the extension direction of the optical fiber. The rod body is provided with first linkage parts and second linkage parts in a protruding mode in the radial direction, each first linkage part abuts against an action piece of a thermal tripping assembly of the surge protector, the second linkage parts can abut against optical fibers located between the two supporting columns, so that the optical fibers are bent, and the ends of the optical fibers are coupled with the optical time domain reflectometer. The problem that the optical path at the far end of the optical fiber is affected due to the fact that action pieces of a plurality of thermal tripping assemblies of the multi-connected surge protector are independently matched with the optical fiber can be solved.

Description

Technical Field

[0001] The utility model relates to the field of surge protector devices, in particular to a device for optically transmitting the thermal tripping signal of a surge protector and a surge protector. Background Art

[0002] When a surge protector converts a thermal tripping action into an electrical signal output, it usually cooperates with a sensor or a circuit structure in the intelligent box through an operating member to convert the action signal of the operating member into an electrical signal, and then converts the analog electrical signal into a digital electrical signal through the relevant circuits in the intelligent box, and sends the electrical signal to an external host computer through a communication unit. Therefore, the intelligent box needs to be powered by an external or its own power supply to realize the operation of each internal power-consuming unit.

[0003] To solve the problem that the deployment and operation of surge protectors need to consider power supply, there is a current solution that uses an optical fiber and an optical time domain reflectometer to transmit the thermal tripping action signal of a surge protector. When the operating member of the thermal tripping component abuts against the corresponding position of the optical fiber and causes the optical fiber to bend at that place, the optical time domain reflectometer can measure the optical information at that place, so as to obtain the information that the surge protector corresponding to the bending point of the optical fiber at that place has a thermal tripping action.

[0004] In a multi-connected surge protector device, there are multiple thermal tripping components. If the operating members of each thermal tripping component are independently matched with the optical fiber, there may be multiple bending points in the area where one optical fiber corresponds to one multi-connected surge protector device. Each bending of the optical fiber causes loss to the optical path at the far end of the optical fiber. In the case of connecting multiple multi-connected surge protector devices in series with one optical fiber, it will affect the optical path at the far end of the optical fiber, and further affect the monitoring of the thermal tripping action of the multi-connected surge protector device at the far end. Summary of the Utility Model

[0005] On the one hand, the utility model provides a device for optically transmitting the thermal tripping signal of a surge protector, which can avoid the problem that the optical path at the far end of the optical fiber is affected when the operating members of multiple thermal tripping components of a multi-connected surge protector are respectively and independently matched with the optical fiber;

[0006] On the other hand, the utility model provides a surge protector.

[0007] The optical fiber transmission device for the thermal tripping signal of the surge protector provided by the utility model comprises a rod body, a chassis part and an optical fiber. Two support columns are arranged on the chassis part, and the optical fiber is laid on the two support columns. The rod body is rotationally matched with the chassis part, and the rotation axis of the rod body is perpendicular to the extending direction of the optical fiber between the two support columns. The rod body is radially provided with a first linkage part and a second linkage part. Each first linkage part abuts against the actuating part of the thermal tripping component of a surge protector, and the second linkage part can abut against the optical fiber located between the two support columns so as to bend the optical fiber. The end of the optical fiber is coupled to an optical time domain reflectometer.

[0008] Further, a first limiting groove is arranged on the support column, and the optical fiber passes through the first limiting groove.

[0009] Further, one end of the support column is fixedly connected to the chassis part, and a clamping part is arranged at the end of the other end. The two clamping parts are arranged at intervals in the direction perpendicular to the extending direction of the optical fiber, and a first limiting groove for the optical fiber to pass through is formed between the two clamping parts.

[0010] Further, a limiting block is arranged on the rod body, and a limiting surface is arranged at the corresponding position on the chassis part. The rod body can rotate until the limiting block abuts against the limiting surface along the rotation direction of the rod body.

[0011] Further, a first clamping part is arranged on the second linkage part. The two first clamping parts are arranged at intervals in the direction perpendicular to the extending direction of the optical fiber at one end of the second linkage part facing the support part.

[0012] Further, the thermal tripping component comprises an actuating rod for forming the actuating part. The actuating rod can move to be separated from the first linkage part, and the side wall surface of the actuating rod can abut against the first linkage part.

[0013] Further, the lever arm length of the second linkage part is smaller than the lever arm length of the first linkage part.

[0014] Further, two connecting terminals are arranged on the chassis part. The optical fiber comprises an inner fiber and an outer fiber. The inner fiber is located inside the chassis part and is respectively connected to the two connecting terminals at both ends. The outer fibers between the connecting terminals are used for connecting adjacent two chassis parts.

[0015] Further, a window structure is arranged on the chassis part, and both ends of the optical fiber respectively pass through the window structure and extend out of the chassis part.

[0016] The surge protector provided by the present utility model includes a lightning protection module and a backup protection module, and the lightning protection module and the backup protection module are respectively fixedly cooperated with the chassis part of the surge protector thermal trip signal optical fiber transmission device as described in any one of the above.

[0017] Beneficial effects

[0018] In this solution, the moving parts of the thermal trip components of multiple surge protectors all abut against a rod body through a first linkage part, and the second linkage part of the rod body then abuts against the optical fiber. No matter which surge protector has a thermal trip action, only one bend will occur on the optical fiber, thereby reducing the influence on the optical path at the far end of the optical fiber. And the rotation axis of the rod body in this solution is perpendicular to the extension direction of the optical fiber between the two struts. During the movement, since the second linkage part rotates around the rotation axis, a component movement in the direction opposite to the supporting force of the strut is generated on the pushing surface, pushing the optical fiber to cause it to bend, and at the same time, mutual sliding along the extension direction of the optical fiber occurs between the optical fiber and the strut. Since the component movement of the pushing surface is opposite to the supporting force of the strut and along the extension direction of the optical fiber, the optical fiber always maintains a pressing effect on the strut, avoiding the pushing surface from laterally pushing the optical fiber to cause the optical fiber to separate from the strut. Description of the drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is an overall schematic diagram inside the chassis part provided by the embodiment of the present utility model;

[0021] Figure 2 It is a schematic diagram of the cooperation among the second linkage part, the strut and the optical fiber provided by the embodiment of the present utility model;

[0022] Reference numerals in the drawings: 1 - chassis part; 2 - strut; 3 - optical fiber; 4 - rod body; 5 - first linkage part; 6 - second linkage part; 7 - moving part; 8 - clamping part; 9 - first limiting groove; 10 - second limiting groove. Specific embodiments

[0023] The following will detail the specific embodiments of the present utility model with reference to the drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present utility model, and are not used to limit the present utility model.

[0024] Embodiment

[0025] AsFigure 1 and Figure 2 A fiber optic transmission device for the thermal tripping signal of a surge protector as shown, comprising a rod body 4, a chassis member 1 and an optical fiber 3. Two struts 2 are provided on the chassis member 1, and the optical fiber 3 is laid on the two struts 2. The rod body 4 is rotationally matched with the chassis member 1, and the rotation axis of the rod body 4 is perpendicular to the extending direction of the optical fiber 3 between the two struts 2. The rod body 4 is radially protruded with a first linkage part 5 and a second linkage part. Each first linkage part 5 abuts against an operating member 7 of the thermal tripping assembly of a surge protector, and the second linkage part can abut against the optical fiber 3 located between the two struts 2 so that the optical fiber 3 is bent. The end of the optical fiber 3 is coupled to an optical time domain reflectometer.

[0026] For the case of multiple surge protectors used in parallel, one optical fiber 3 corresponds to multiple surge protectors, and the bending of the optical fiber 3 at each location causes loss to the optical path at the far end of the optical fiber 3. In this solution, the operating members 7 of the thermal tripping assemblies of multiple surge protectors all abut against a rod body 4 through the first linkage parts 5, and the second linkage part of the rod body 4 then abuts against the optical fiber 3. No matter which surge protector undergoes a thermal tripping action, only one bending occurs on the optical fiber 3, thereby reducing the influence on the optical path at the far end of the optical fiber 3.

[0027] The rotation of the rod body 4 generates contact with the optical fiber 3. To prevent the second linkage part from pushing the optical fiber 3 away from the strut 2 when the rod body 4 rotates, the rotation axis of the rod body 4 in this solution is perpendicular to the extending direction of the optical fiber 3 between the two struts 2. During the rotation process of the second linkage part, the pushing surface at its end moves along the extending direction of the optical fiber 3, moving from near one strut 2 to near the other strut 2. During the movement, since the second linkage part rotates around the rotation axis, a component movement in the direction opposite to the supporting force of the strut 2 is generated on the pushing surface, pushing the optical fiber 3 to cause it to bend, and at the same time, mutual sliding occurs along the extending direction of the optical fiber 3 between the pushing surface and the optical fiber 3. Since the component movement of the pushing surface is opposite to the supporting force of the strut 2 and along the extending direction of the optical fiber 3, the optical fiber 3 always maintains a pressing effect on the strut 2, preventing the pushing surface from laterally pushing the optical fiber 3 to cause the optical fiber 3 to separate from the strut 2.

[0028] In an optional implementation manner, a first limiting groove 9 is provided on the strut 2, and the optical fiber 3 passes through the first limiting groove 9.

[0029] The first limiting groove 9 is opened along the extending direction of the optical fiber 3, and its function is to restrain the optical fiber 3 to prevent the optical fiber 3 from separating from the strut 2.

[0030] In an alternative embodiment, one end of the strut 2 is fixedly connected to the chassis member 1, and a clamping portion 8 is provided at the end of the other end. The two clamping portions 8 are spaced apart in a direction perpendicular to the extending direction of the optical fiber 3, and a first limiting groove 9 for the optical fiber 3 to pass through is formed between the two clamping portions 8.

[0031] The two clamping portions 8 are spaced apart on the end face of the strut 2 overlapping the optical fiber 3 to form a first limiting groove 9. The distance between the two clamping portions 8 is greater than the radial dimension of the optical fiber 3. During assembly, the optical fiber 3 is placed between the two clamping portions 8 through an opening formed by the edges of the two clamping portions 8.

[0032] In an alternative embodiment, a limiting block is provided on the rod body 4, and a limiting surface is provided at the corresponding position of the chassis member 1. The rod body 4 can rotate until the limiting block abuts against the limiting surface along the rotation direction of the rod body 4.

[0033] The actuating rod of the thermal release assembly is driven by a spring. The limiting block protrudes from the rod body 4 in the radial direction, and it cooperates with the limiting surface to impose a constraint on the rotation angle of the rod body 4. When the rod body 4 rotates to a certain deformation degree of the optical fiber 3 by its second linkage portion, the limiting block abuts against the limiting surface, and the rod body 4 cannot continue to rotate under the push of the actuating rod, thereby avoiding excessive bending of the optical fiber 3. Or after the second linkage portion rotates to reach the maximum displacement amount along the pushing direction and then gradually moves away from the optical fiber 3 as the rod body 4 continues to rotate, it cannot maintain the push on the optical fiber 3.

[0034] Preferably, the second linkage portion in this solution serves as the limiting block, and the bottom end face of the chassis member 1 fixing the strut 2 serves as the limiting surface. When the rod body 4 rotates to a certain deformation degree of the optical fiber 3 by its second linkage portion, the second linkage portion abuts against the chassis member 1, and the rod body 4 cannot continue to rotate under the push of the actuating rod.

[0035] Alternatively, the thermal release assembly includes an actuating rod for forming the actuating member 7. The actuating rod can move away from the first linkage portion 5, and the side wall surface of the actuating rod can abut against the first linkage portion 5.

[0036] When the actuating rod pushes the first linkage, the first linkage portion 5 rotates so that the abutting position between the actuating rod and the first linkage portion 5 gradually approaches the edge of the first linkage portion 5. When the rod body 4 rotates to a certain deformation degree of the optical fiber 3 by its second linkage portion, the actuating rod disengages from the first linkage portion 5 at the edge of the first linkage portion 5. Since the optical fiber 3 has a certain strength and toughness, the second linkage portion abuts against the side wall surface of the actuating rod under the action of the optical fiber 3, and when the actuating rod continues to move, relative sliding occurs between the second linkage portion and the side wall surface of the actuating rod.

[0037] In an alternative embodiment, a first clamping member is provided on the second linkage portion, and the two first clamping members are spaced apart in a direction perpendicular to the extending direction of the optical fiber 3 at one end of the second linkage portion facing the support member.

[0038] The two first clamping members are spaced apart on the pushing surface where the second linkage portion contacts the optical fiber 3 to form a second limiting groove 10. When the second linkage portion rotates to contact the optical fiber 3, the optical fiber 3 enters the second limiting groove 10 through the openings at the edges of the two first clamping members. The optical fiber 3 is constrained within the second limiting groove 10 to prevent the optical fiber 3 from sliding and detaching from the support column 2 when the second linkage portion pushes the optical fiber 3.

[0039] In an alternative embodiment, the lever arm length of the second linkage portion is less than the lever arm length of the first linkage portion 5.

[0040] The lever arm length of the second linkage portion refers to the distance between the position where the second linkage portion contacts the optical fiber 3 and the rotation axis of the rod body 4. The lever arm length of the first linkage portion 5 refers to the distance between the position where the first linkage portion 5 contacts the actuating member 7 of the thermal release assembly and the rotation axis of the rod body 4. The stroke of the actuating member 7 is relatively large. To prevent the second linkage portion from bending the optical fiber 3 to cause a complete blockage of the optical path, or to cause a large loss to the optical path at the distal end of the optical fiber 3, which affects the signal detection of the multi-link surge protector integrated component at the distal end of the optical fiber 3 by the optical time domain reflectometer, the stroke of the second linkage portion in this solution is relatively small, so that the bending generated when the second linkage portion pushes the optical fiber 3 is relatively small.

[0041] In an alternative embodiment, two connection terminals are provided on the chassis member 1. The optical fiber 3 includes an inner fiber and an outer fiber. The inner fiber is located within the chassis member 1 and is respectively connected to the two connection terminals at both ends. The outer fibers between the adjacent two chassis members 1 are connected through the connection terminals.

[0042] One optical time domain reflectometer corresponds to multiple multi-link surge protector integrated components. Between the optical time domain reflectometer and the chassis member 1 of the multi-link surge protector integrated component, and between the chassis member 1 of the multi-link surge protector integrated component and other chassis members 1, they are all connected through the outer fibers. The inner fiber within the chassis member 1 cooperates with the support column 2, and the inner fiber and the outer fiber are connected through the connection terminals, so as to realize that an optical fiber 3 composed of an inner fiber and an outer fiber connects the optical time domain reflectometer and each multi-link surge protector integrated component in series.

[0043] For the two connection terminals on the chassis member 1 of each multi-link surge protector integrated component, one forms an inlet path and the other forms an outlet path. When connecting between the chassis members 1, one end of an outer fiber is connected to the connection terminal on one chassis member 1 for forming the inlet path, and the other end is connected to the connection terminal on the other chassis member 1 for forming the outlet path.

[0044] Alternatively, the chassis member 1 is provided with a window structure, and both ends of the optical fiber 3 pass through the window structure and extend outside the chassis member 1. There are two window structures, one forming an inlet path and the other forming an outlet path. When connecting the chassis members 1, one end of the optical fiber 3 is extended through the window structure on the chassis member 1 for forming the inlet path and is connected to the optical fiber 3 extended through the window structure for forming the outlet path on another chassis member 1. The two optical fibers 3 are fused together, or a section of optical fiber 3 is fused between them as a connection section.

[0045] The surge protector provided by the present utility model includes a lightning protection module and a backup protection module, and the lightning protection module and the backup protection module are respectively fixedly fitted with the chassis member 1 of the thermal trip signal optical fiber transmission device of the surge protector.

[0046] It should be noted that any of the above embodiments is for explaining the present utility model rather than limiting the present utility model, and those skilled in the art can design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in the claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present utility model can be implemented by means of hardware including several different elements and by means of a suitably programmed computer. In the unit claims listing several devices, several of these devices can be embodied by the same hardware item. The use of the words first, second, upper, lower, etc. does not denote any order. These words can be interpreted as names.

[0047] The above embodiments are only suitable for explaining the present utility model and are not a limitation to the present utility model. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present utility model. Therefore, all equivalent technical solutions also belong to the scope of the present utility model, and the patent protection scope of the present utility model shall be defined by the claims.

Claims

1. A surge protector thermal trip signal optical fiber transmission device, characterized in that: The invention comprises a rod body (4), a chassis (1) and an optical fiber (3), wherein two pillars (2) are arranged on the chassis (1), the optical fiber (3) is mounted on the two pillars (2), the rod body (4) is rotatably matched with the chassis (1), the rotation axis of the rod body (4) is perpendicular to the extension direction of the optical fiber (3) between the two pillars (2), the rod body (4) is radially protruding with a first linkage part (5) and a second linkage part, each of the first linkage parts (5) abuts against an actuating part (7) of a thermal release assembly of a surge protector, the second linkage part can abut against the optical fiber (3) located between the two pillars (2) so as to bend the optical fiber (3), and the end of the optical fiber (3) is coupled to an optical time domain reflectometer.

2. The surge protector thermal trip signal optical fiber transmission device according to claim 1, characterized in that: The support column (2) is provided with a first limiting groove (9), and the optical fiber (3) passes through the first limiting groove (9).

3. The surge protector thermal trip signal optical fiber transmission device according to claim 2, characterized in that: One end of the support (2) is fixedly connected to the chassis (1), and a clamping portion (8) is provided on the end of the other end. The two clamping portions (8) are arranged at intervals in a direction perpendicular to the extension direction of the optical fiber (3), and the first limiting groove (9) for the optical fiber (3) to pass through is formed between the two clamping portions (8).

4. The surge protector thermal trip signal optical fiber transmission device according to claim 3, characterized in that: The rod body (4) is provided with a limit block, and the corresponding position of the chassis component (1) is provided with a limit surface, and the rod body (4) can be rotated until the limit block and the limit surface abut against each other along the rotation direction of the rod body (4).

5. The surge protector thermal trip signal optical fiber transmission device according to claim 3, characterized in that: The second linkage part is provided with a first clamping piece, and two first clamping pieces are arranged at intervals along a direction perpendicular to the extension direction of the optical fiber (3) at one end of the second linkage part facing the support member.

6. The surge protector thermal trip signal optical fiber transmission device according to claim 3, characterized in that: The thermal release assembly comprises an actuating rod for forming the actuating member (7), the actuating rod being movable to be disengaged from the first linkage portion (5), and a side wall surface of the actuating rod being abutted against the first linkage portion (5).

7. The surge protector thermal trip signal optical fiber transmission device according to claim 1, characterized in that: The lever arm length of the second linkage part is smaller than the lever arm length of the first linkage part (5).

8. The surge protector thermal trip signal optical fiber transmission device according to claim 3, characterized in that: Two connecting terminals are provided on the chassis component (1); the optical fiber (3) comprises an inner fiber and an outer fiber; the inner fiber is located inside the chassis component (1) and its two ends are respectively connected to the two connecting terminals; two adjacent chassis components (1) are connected via the outer fiber between the connecting terminals.

9. The surge protector thermal trip signal optical fiber transmission device according to claim 3, characterized in that: The chassis component (1) is provided with a window structure, and the two ends of the optical fiber (3) respectively pass through the window structure and extend out of the chassis component (1).

10. A surge protector, comprising a lightning protection module and a backup protection module, characterized in that: The lightning protection module and the backup protection module are respectively fixedly matched with the chassis component (1) of the surge protector thermal trip signal optical fiber transmission device according to any one of claims 1 to 9.

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