CN219760639U - Integrated cavity-separating type pressure limiting device with fusing function - Google Patents
Integrated cavity-separating type pressure limiting device with fusing function Download PDFInfo
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- CN219760639U CN219760639U CN202321222789.6U CN202321222789U CN219760639U CN 219760639 U CN219760639 U CN 219760639U CN 202321222789 U CN202321222789 U CN 202321222789U CN 219760639 U CN219760639 U CN 219760639U
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- 238000005192 partition Methods 0.000 claims abstract description 63
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- 230000010354 integration Effects 0.000 claims 1
- 238000009413 insulation Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
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Abstract
The utility model provides an integrated split-cavity type voltage limiting device with a fusing function, which is used for solving the technical problems that when the core protection elements of the existing fusing device and the existing voltage limiter are assembled in the same sealed insulating jacket, the insulating performance of an insulating part of the fusing device and the insulating performance of a fracture formed after fusing are easily reduced or completely lost, and further the system ground fault is caused or the protected equipment is short-circuited to lose functions. The voltage limiting device comprises an upper insulating cylinder, a lower insulating cylinder, a conductive baffle plate, an upper electrode and a fusing device in the upper insulating cylinder, and a voltage limiting element and a lower electrode in the lower insulating cylinder; the upper end face and the lower end face of the conductive partition plate are respectively connected with the lower end of the fusing device and the upper end face of the voltage limiting element; the outer side wall of the conductive partition plate is connected with the inner side wall of the upper insulating cylinder or/and the inner side wall of the lower insulating cylinder, or the conductive partition plate is positioned between the lower end surface of the upper insulating cylinder and the upper end surface of the lower insulating cylinder and is used for realizing physical isolation between the fusing device and the voltage limiting element.
Description
Technical Field
The utility model relates to a pressure limiting device, in particular to an integrated cavity-dividing pressure limiting device with a fusing function.
Background
To protect the insulation safety of electrical equipment from overvoltages, voltage limiters are often provided to limit the overvoltage amplitude. The voltage limiter and the protected equipment are connected to the circuit in parallel, but when the energy of the overvoltage exceeds the bearable range of the voltage limiter, the voltage limiter has defects or the voltage limiter is degraded to end the service life, the voltage limiter breaks down and damages, so that the system ground fault is caused or the protected electrical equipment is short-circuited to lose functions.
At present, in order to prevent the breakdown and damage of the voltage limiter from causing the system ground fault or the failure of the protected electrical equipment, a fusing device is generally connected in series with the voltage limiter, namely, before the breakdown and damage of the voltage limiter, the voltage limiter is broken down by using the increased fault current to quickly fuse to form a fracture, the fault current is cut off, and the breakdown and damage of the voltage limiter are prevented, so that the system ground fault or the protected electrical equipment is prevented from being short-circuited and losing function under the conditions that the energy of the overvoltage exceeds the bearable range of the voltage limiter, the voltage limiter is defective or the service life of the voltage limiter is finished and the like. However, the external serial fuse device greatly increases the installation space, and the layout is more complicated and the assembly is difficult, so that the fuse device and the core protection element of the voltage limiter are usually assembled together in the same sealed insulating jacket. In this way, although the installation space is saved and the assembly is simpler, under some working conditions, the core protection element of the voltage limiter can break down and burn out along with the fuse, even before the fuse device acts. Therefore, when the fusing device and the core protection element of the voltage limiter are assembled in the same sealed insulating jacket, the insulating performance of the insulating part of the fusing device and the insulating performance of the fracture formed after fusing can be reduced or completely lost due to electrified dust generated by burning the core protection element of the voltage limiter, and further, the system ground fault or the short circuit of the protected equipment is caused to lose functions.
Disclosure of Invention
The utility model aims to solve the technical problems that when the prior fusing device and a core protection element of a voltage limiter are assembled in the same sealed insulating jacket, the insulating performance of an insulating part of the fusing device and the insulating performance of a fracture formed after fusing are easily reduced or completely lost, and further the system ground fault is caused or the protected equipment is short-circuited and loses functions, and provides an integrated pressure limiting device with a fusing function.
In order to achieve the above purpose, the technical scheme of the utility model is as follows:
the integrated cavity-dividing type voltage limiting device with the fusing function is characterized by comprising an upper insulating cylinder, a lower insulating cylinder, a conductive partition plate, an upper electrode and a fusing device which are sequentially arranged in the upper insulating cylinder from top to bottom, and a voltage limiting element and a lower electrode which are sequentially arranged in the lower insulating cylinder from top to bottom;
the upper end face of the conductive partition plate is connected with the lower end of the fusing device, the lower end face of the conductive partition plate is connected with the upper end face of the voltage limiting element, and the conductive partition plate is used for realizing electric connection between the fusing device and the voltage limiting element;
the outer side wall of the conductive partition plate is connected with the inner side wall of the upper insulating cylinder or/and the inner side wall of the lower insulating cylinder, or the conductive partition plate is positioned between the lower end surface of the upper insulating cylinder and the upper end surface of the lower insulating cylinder and is used for realizing physical isolation between the fusing device and the voltage limiting element;
the upper electrode and the lower electrode are used for communicating with an external circuit.
Further, the device also comprises a conductive plate;
the conducting plate is located between the upper electrode and the fusing device, the periphery of the conducting plate is connected with the upper insulating cylinder and used for realizing electric connection between the upper electrode and the fusing device through the conducting plate, and the voltage limiting device is convenient to assemble.
Further, the insulating sleeve also comprises a rubber jacket sleeved on the outer side walls of the upper insulating cylinder and the lower insulating cylinder or sleeved on the outer side walls of the upper insulating cylinder, the conductive partition plate and the lower insulating cylinder.
Further, the upper insulating cylinder comprises an outer insulating cylinder and an inner insulating cylinder arranged on the inner side of the outer insulating cylinder;
the upper end face of the inner insulating cylinder is connected with the lower end face of the conductive plate, and the lower end face of the inner insulating cylinder is connected with the upper end face of the conductive partition plate;
the fusing device is positioned in the inner insulating cylinder, and the upper electrode and the conducting plate are positioned in the outer insulating cylinder.
Further, the conductive partition plate is located between the lower end face of the upper insulating cylinder and the upper end face of the lower insulating cylinder, and the upper end face of the conductive partition plate is connected with the lower end face of the upper insulating cylinder, and the lower end face of the conductive partition plate is connected with the upper end face of the lower insulating cylinder through bolts.
Further, the outer side wall of the conductive partition plate is in threaded connection with the outer insulating cylinder of the upper insulating cylinder or/and the inner side wall of the lower insulating cylinder.
Further, an annular bulge is arranged at the upper end edge or the lower end edge of the conductive separator;
the annular bulge is positioned between the lower end face of the outer insulating cylinder of the upper insulating cylinder and the upper end face of the lower insulating cylinder, and is fixedly connected with the lower end face of the outer insulating cylinder of the upper insulating cylinder or the upper end face of the lower insulating cylinder, and the rubber jacket is sleeved on the outer insulating cylinder of the upper insulating cylinder, the annular bulge of the conductive partition plate and the outer side wall of the lower insulating cylinder.
Further, the outer side wall of the conductive partition plate is in threaded connection with the inner side wall of the upper insulating cylinder or/and the inner side wall of the lower insulating cylinder;
the upper end edge or the lower end edge of the conductive partition plate is provided with an annular bulge;
the annular bulge is positioned between the lower end face of the upper insulating cylinder and the upper end face of the lower insulating cylinder, the annular bulge is fixedly connected with the lower end face of the upper insulating cylinder or the upper end face of the lower insulating cylinder, and the rubber jacket is sleeved on the annular bulge of the upper insulating cylinder and the conductive partition plate and the outer side wall of the lower insulating cylinder.
Further, compression springs are respectively arranged between the upper electrode and the conductive plate and between the voltage limiting element and the lower electrode;
or a compression spring is arranged between the upper electrode and the conducting plate;
or a compression spring is arranged between the pressure limiting element and the lower electrode.
Further, the upper insulating cylinder and the lower insulating cylinder are integrally arranged;
the side wall of the upper electrode is in threaded connection with the inner side wall of the upper insulating cylinder;
the side wall of the lower electrode is in threaded connection with the inner side wall of the lower insulating cylinder.
Compared with the prior art, the utility model has the beneficial effects that:
1. the utility model provides an integrated cavity-dividing type voltage limiting device with a fusing function, wherein an upper insulating cylinder and a lower insulating cylinder of the voltage limiting device are divided into two independent chambers by a conductive baffle, and the two chambers are electrically connected by the conductive baffle; when the voltage limiting element is broken down and damaged, generated electrified dust cannot be diffused to a cavity where the fusing device is located, so that the insulation level of an insulating piece supporting the fusing device is ensured, and the reliability of the fusing device is improved.
2. The integrated cavity-dividing type pressure limiting device with the fusing function is compact in structure, simple to assemble, attractive in layout and high in practicability.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an integrated pressure limiting device with fusing function;
FIG. 2 is a schematic diagram of a second embodiment of the present utility model;
FIG. 3 is a schematic structural diagram of a third embodiment of the present utility model;
FIG. 4 is a schematic diagram of a fourth embodiment of the present utility model;
fig. 5 is a schematic structural diagram of a fifth embodiment of the present utility model.
Specific reference numerals are as follows:
1-upper insulating cylinder, 11-outer insulating cylinder, 12-inner insulating cylinder;
2-a lower insulating cylinder; 3-upper electrode; 4-conductive plates; 5-fusing device; 6-a voltage limiting element; 7-a lower electrode; 8-conductive spacers; 9-a rubber jacket; 10-compressing a spring; 13-a bolt; 14-annular projection.
Detailed Description
To further clarify the advantages and features of the present utility model, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
Example 1
As shown in fig. 1, an integrated cavity-dividing voltage limiting device with a fusing function in this embodiment includes an upper insulating cylinder 1, a lower insulating cylinder 2, a conductive partition 8, an upper electrode 3, a conductive plate 4, a fusing device 5, and a voltage limiting element 6 and a lower electrode 7 sequentially disposed in the lower insulating cylinder 2 from top to bottom, wherein the upper electrode 3, the conductive plate 4, the fusing device 5, and the lower electrode 7 are sequentially disposed in the upper insulating cylinder 1 from top to bottom. The outer periphery of the conductive plate 4 in this embodiment is connected with the upper insulating cylinder 1, so as to realize electrical connection between the upper electrode 3 and the fusing device 5 through the conductive plate 4, so that the voltage limiting device is convenient to assemble, and in other embodiments of the present utility model, the conductive plate 4 may not be provided. The voltage limiting element 6 is a component with overvoltage limiting function such as a nonlinear metal oxide resistor sheet, a discharge gap and the like, and the fusing device 5 is made of conductive or semiconductive materials and normally works under rated current and fuses when exceeding the rated current. The upper insulating cylinder 1 includes an outer insulating cylinder 11 and an inner insulating cylinder 12 provided inside the outer insulating cylinder 11; the upper and lower ends of the inner insulating cylinder 12 are respectively abutted against the conductive plate 4 and the conductive partition 8. The fusing device 5 is positioned inside the inner insulating cylinder 12, and the inner insulating cylinder 12 provides electrical isolation and support for the fusing device 5; the upper electrode 3 and the conductive plate 4 are positioned in the outer insulating cylinder 11, and the whole formed by the upper electrode 3, the conductive plate 4, the fusing device 5, the conductive partition 8, the voltage limiting element 6 and the lower electrode 7 is electrically isolated and supported through the outer insulating cylinder 11. In the embodiment, the outer insulating cylinder 11, the inner insulating cylinder 12 and the lower insulating cylinder 2 are designed into an integrated structure; in order to further enhance the sealing performance and the insulating performance of the voltage limiting device, the utility model also provides a rubber jacket 9 sleeved on the outer side wall of the integrated structure consisting of the outer insulating cylinder 11, the inner insulating cylinder 12 and the lower insulating cylinder 2.
The upper end face of the conductive partition plate 8 is connected with the lower end face of the inner insulating cylinder 12 and the lower end of the fusing device 5 at the same time, the lower end face of the conductive partition plate 8 is connected with the upper end face of the voltage limiting element 6, the outer side wall of the conductive partition plate 8 is in threaded connection with the inner side wall of the lower insulating cylinder 2, on one hand, the fusing device 5 and the voltage limiting element 6 are located in two different chambers through the conductive partition plate 8, so that physical isolation is achieved, and on the other hand, the electrical connection between the fusing device 5 and the voltage limiting element 6 is achieved through the conductive partition plate 8. In this embodiment, the connection between the upper end surface of the conductive separator 8 and the lower end surface of the inner insulating tube 12 is achieved by bonding, and in other embodiments of the present utility model, the connection between the upper end surface of the conductive separator 8 and the lower end surface of the inner insulating tube 12 may be achieved by other means such as bolting. Wherein, the thickness of the conductive partition 8 is designed according to the insulation level of the fracture of the fusing device 5, and the outer diameter size of the conductive partition 8 is designed according to the inner diameter of the outer insulation cylinder 11 connected with the conductive partition or the inner diameter of the lower insulation cylinder 2, and in this embodiment, the conductive partition is designed according to the inner diameter of the lower insulation cylinder 2.
In the utility model, a compression spring 10 can be respectively arranged between the upper electrode 3 and the conductive plate 4, between the voltage limiting element 6 and the lower electrode 7, or the compression spring 10 can be arranged between the upper electrode 3 and the conductive plate 4, or between the voltage limiting element 6 and the lower electrode 7; in this embodiment, compression springs 10 are respectively provided between the upper electrode 3 and the conductive plate 4, and between the voltage limiting element 6 and the lower electrode 7. The upper electrode 3 and the lower electrode 7 are used for being communicated with an external direct current circuit after being sequentially and electrically connected with the upper electrode 3, the conductive plate 4, the fusing device 5, the conductive partition 8, the voltage limiting element 6 and the lower electrode 7, namely the other ends of the fusing device 5 and the voltage limiting element 6 are respectively led out through the upper electrode 3 and the lower electrode 7 to form a series connection relation.
The side wall of the upper electrode 3 is in threaded connection with the inner side wall of the upper insulating cylinder 1, and the side wall of the lower electrode 7 is in threaded connection with the inner side wall of the lower insulating cylinder 2. During installation, the upper end face of the voltage limiting element 6 is tightly pressed against the conductive partition plate 8 by screwing the lower electrode 7, so that the conductive partition plate 8 is tightly contacted with the lower end face of the inner insulating cylinder 12, and the upper insulating cylinder 1 and the lower insulating cylinder 2 form two completely independent chambers.
Example two
As shown in fig. 2, the present embodiment differs from the first embodiment in that the outer and inner insulating cylinders 11 and 12 in the upper insulating cylinder 1, and the lower insulating cylinder 2 are provided separately; the upper end face of the inner insulating cylinder 12 is connected with the lower end face of the conductive plate 4 through bolts 13, and the lower end face of the outer insulating cylinder 11 is connected with the upper end face of the lower insulating cylinder 2 through cementing. The outer side wall of the conductive partition plate 8 is in threaded connection with the inner side wall of the integral structure, which is connected with the outer insulating cylinder 11 and the lower insulating cylinder 2, and is used for realizing physical isolation between the fusing device 5 and the voltage limiting element 6 and electric connection between the fusing device 5 and the voltage limiting element 6 through the conductive partition plate 8.
Example III
As shown in fig. 3, this embodiment differs from the first embodiment in that the outer and inner insulating cylinders 11 and 12 in the upper insulating cylinder 1, and the lower insulating cylinder 2 are provided separately. The outer side wall of the conductive partition plate 8 is in threaded connection with the inner side wall of the outer insulating cylinder 11, meanwhile, the annular protrusion 14 is arranged at the edge of the lower end of the conductive partition plate 8, the annular protrusion 14 is located between the lower end face of the outer insulating cylinder 11 of the upper insulating cylinder 1 and the upper end face of the lower insulating cylinder 2, the annular protrusion 14 is connected with the upper end face of the lower insulating cylinder 2 through bolts 13, the rubber jacket 9 is sleeved on the outer insulating cylinder 11 of the upper insulating cylinder 1, the annular protrusion 14 of the conductive partition plate 8 and the outer side wall of the lower insulating cylinder 2, and is used for realizing physical isolation between the fusing device 5 and the voltage limiting element 6 through the conductive partition plate 8, and electric connection between the fusing device 5 and the voltage limiting element 6.
Example IV
As shown in fig. 4, the present embodiment differs from the first embodiment in that the upper insulating cylinder 1 and the lower insulating cylinder 2 are two separate insulating cylinders, and that the outside of the fuse device 5 is not provided with a separate insulating cylinder, that is, an inner insulating cylinder 12 is not provided; in this embodiment, the upper insulating cylinder 1 provides electrical isolation and support for the whole body composed of the upper electrode 3, the conductive plate 4, the fusing device 5, the conductive partition 8, the voltage limiting element 6 and the lower electrode 7. Meanwhile, the upper electrode 3 and the fusing device 5 are directly communicated, that is, the conductive plate 4 is not arranged between the upper electrode 3 and the fusing device 5, and correspondingly, the compression spring 10 is not arranged. The outer side wall of the conductive partition plate 8 is in threaded connection with the inner side wall of the lower insulating cylinder 2, meanwhile, the annular protrusion 14 is arranged at the edge of the upper end of the conductive partition plate 8, the annular protrusion 14 is located between the lower end face of the upper insulating cylinder 1 and the upper end face of the lower insulating cylinder 2, the annular protrusion 14 is connected with the lower end face of the upper insulating cylinder 1 through bolts 13, the rubber jacket 9 is sleeved on the outer side walls of the upper insulating cylinder 1, the annular protrusion 14 of the conductive partition plate 8 and the lower insulating cylinder 2, and is used for realizing physical isolation between the fusing device 5 and the voltage limiting element 6 through the conductive partition plate 8, and electric connection between the fusing device 5 and the voltage limiting element 6.
Example five
As shown in fig. 5, this embodiment differs from the first embodiment in that the upper insulating cylinder 1 and the lower insulating cylinder 2 are two separate insulating cylinders, and the outer insulating cylinder 11 and the inner insulating cylinder 12 are of integral structural design. The outer side wall of the conductive partition 8 is connected with the inner side wall of the rubber jacket 9, the upper end face of the conductive partition 8 is connected with the lower end face of the upper insulating cylinder 1 and the lower end of the fusing device 5, the lower end face of the conductive partition 8 is connected with the upper end face of the lower insulating cylinder 2 and the upper end face of the voltage limiting element 6, and the physical isolation between the fusing device 5 and the voltage limiting element 6 and the electrical connection between the fusing device 5 and the voltage limiting element 6 are realized through the conductive partition 8. In this embodiment, the upper end surface of the conductive separator 8 and the lower end surface of the upper insulating cylinder 1, and the lower end surface of the conductive separator 8 and the upper end surface of the lower insulating cylinder 2 are connected by bolts 13, and in other embodiments of the present utility model, the connection may be performed by gluing or the like.
The foregoing description is only for the purpose of illustrating the technical solution of the present utility model, but not for the purpose of limiting the same, and it will be apparent to those of ordinary skill in the art that modifications may be made to the specific technical solution described in the foregoing embodiments, or equivalents may be substituted for parts of the technical features thereof, without departing from the spirit of the technical solution of the present utility model.
Claims (10)
1. The utility model provides an integration divides chamber formula area to fuse pressure limiting device of function which characterized in that:
the device comprises an upper insulating cylinder (1), a lower insulating cylinder (2), a conductive baffle (8), an upper electrode (3) and a fusing device (5) which are sequentially arranged in the upper insulating cylinder (1) from top to bottom, and a voltage limiting element (6) and a lower electrode (7) which are sequentially arranged in the lower insulating cylinder (2) from top to bottom;
the upper end face of the conductive partition plate (8) is connected with the lower end of the fusing device (5), the lower end face of the conductive partition plate (8) is connected with the upper end face of the voltage limiting element (6), and the conductive partition plate (8) is used for realizing electric connection between the fusing device (5) and the voltage limiting element (6);
the outer side wall of the conductive partition plate (8) is connected with the inner side wall of the upper insulating cylinder (1) or/and the lower insulating cylinder (2), or the conductive partition plate (8) is positioned between the lower end surface of the upper insulating cylinder (1) and the upper end surface of the lower insulating cylinder (2) and is used for realizing physical isolation between the fusing device (5) and the voltage limiting element (6);
the upper electrode (3) and the lower electrode (7) are used for communicating with an external circuit.
2. The integrated split-cavity type pressure limiting device with fusing function as set forth in claim 1, wherein:
also comprises a conductive plate (4);
the conducting plate (4) is located between the upper electrode (3) and the fusing device (5), and the periphery of the conducting plate (4) is connected with the upper insulating cylinder (1) and is used for realizing electric connection between the upper electrode (3) and the fusing device (5) through the conducting plate (4).
3. The integrated split-cavity type pressure limiting device with fusing function as set forth in claim 2, wherein:
the insulating sleeve further comprises a rubber jacket (9) sleeved on the upper insulating cylinder (1) and the lower insulating cylinder (2) or sleeved on the outer side walls of the upper insulating cylinder (1), the conductive partition plate (8) and the lower insulating cylinder (2).
4. The integrated split-cavity type pressure limiting device with fusing function according to claim 3, wherein:
the upper insulating cylinder (1) comprises an outer insulating cylinder (11) and an inner insulating cylinder (12) arranged on the inner side of the outer insulating cylinder (11);
the upper end face of the inner insulating cylinder (12) is connected with the lower end face of the conductive plate (4), and the lower end face of the inner insulating cylinder (12) is connected with the upper end face of the conductive partition plate (8);
the fusing device (5) is positioned in the inner insulating cylinder (12), and the upper electrode (3) and the conducting plate (4) are positioned in the outer insulating cylinder (11).
5. The integrated split-cavity type pressure limiting device with fusing function according to any one of claims 1 to 4, wherein:
the conductive partition plate (8) is positioned between the lower end face of the upper insulating cylinder (1) and the upper end face of the lower insulating cylinder (2), the upper end face of the conductive partition plate (8) is positioned between the lower end face of the upper insulating cylinder (1), and the lower end face of the conductive partition plate (8) is connected with the upper end face of the lower insulating cylinder (2) through bolts.
6. The integrated split-cavity type pressure limiting device with fusing function as set forth in claim 4, wherein:
the outer side wall of the conductive partition plate (8) is in threaded connection with the outer insulating cylinder (11) of the upper insulating cylinder (1) or/and the inner side wall of the lower insulating cylinder (2).
7. The integrated split-cavity type pressure limiting device with fusing function as set forth in claim 6, wherein:
an annular bulge (14) is arranged at the upper end edge or the lower end edge of the conductive clapboard (8);
the annular bulge (14) is positioned between the lower end face of the outer insulating cylinder (11) of the upper insulating cylinder (1) and the upper end face of the lower insulating cylinder (2), the annular bulge (14) is fixedly connected with the lower end face of the outer insulating cylinder (11) of the upper insulating cylinder (1) or the upper end face of the lower insulating cylinder (2), and the rubber jacket (9) is sleeved on the outer insulating cylinder (11) of the upper insulating cylinder (1), the annular bulge (14) of the conductive partition plate (8) and the outer side wall of the lower insulating cylinder (2).
8. The integrated split-cavity type pressure limiting device with fusing function as set forth in claim 1, wherein:
the outer side wall of the conductive partition plate (8) is in threaded connection with the inner side wall of the upper insulating cylinder (1) or/and the lower insulating cylinder (2);
an annular bulge (14) is arranged at the upper end edge or the lower end edge of the conductive clapboard (8);
the annular bulge (14) is positioned between the lower end face of the upper insulating cylinder (1) and the upper end face of the lower insulating cylinder (2), the annular bulge (14) is fixedly connected with the lower end face of the upper insulating cylinder (1) or the upper end face of the lower insulating cylinder (2), and the rubber jacket (9) is sleeved on the outer side walls of the annular bulge (14) of the upper insulating cylinder (1) and the conductive partition plate (8) and the lower insulating cylinder (2).
9. The integrated split-cavity type pressure limiting device with fusing function according to any one of claims 2 to 4, wherein:
compression springs (10) are respectively arranged between the upper electrode (3) and the conductive plate (4) and between the voltage limiting element (6) and the lower electrode (7);
or a compression spring (10) is arranged between the upper electrode (3) and the conductive plate (4);
or, a compression spring (10) is arranged between the pressure limiting element (6) and the lower electrode (7).
10. The integrated split-cavity type pressure limiting device with fusing function as set forth in claim 9, wherein:
the upper insulating cylinder (1) and the lower insulating cylinder (2) are integrally arranged;
the side wall of the upper electrode (3) is in threaded connection with the inner side wall of the upper insulating cylinder (1);
the side wall of the lower electrode (7) is in threaded connection with the inner side wall of the lower insulating cylinder (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321222789.6U CN219760639U (en) | 2023-05-19 | 2023-05-19 | Integrated cavity-separating type pressure limiting device with fusing function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321222789.6U CN219760639U (en) | 2023-05-19 | 2023-05-19 | Integrated cavity-separating type pressure limiting device with fusing function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219760639U true CN219760639U (en) | 2023-09-26 |
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ID=88091396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321222789.6U Active CN219760639U (en) | 2023-05-19 | 2023-05-19 | Integrated cavity-separating type pressure limiting device with fusing function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219760639U (en) |
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2023
- 2023-05-19 CN CN202321222789.6U patent/CN219760639U/en active Active
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