CN213484357U - PT cabinet convenient to maintain - Google Patents
PT cabinet convenient to maintain Download PDFInfo
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- CN213484357U CN213484357U CN202021762629.7U CN202021762629U CN213484357U CN 213484357 U CN213484357 U CN 213484357U CN 202021762629 U CN202021762629 U CN 202021762629U CN 213484357 U CN213484357 U CN 213484357U
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- room
- contact box
- cabinet
- isolation handcart
- handcart
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Abstract
The utility model relates to an electrical equipment field especially relates to a PT cabinet convenient to maintain. The utility model discloses a PT cabinet convenient to maintain, the PT cabinet includes: the device comprises a cabinet body, a front-side upper instrument room, a front-side middle isolation handcart room, a rear-side upper bus room and a lower cable room, wherein the cabinet body is partitioned by a partition plate to form the instrument room positioned at the front-side upper part, the isolation handcart room positioned at the front-side middle part, the bus room positioned at the rear-side upper part and the cable; 3 single-phase PTs arranged in the cable chamber; the isolation handcart device is arranged in the isolation handcart room, a fuse protector and a lightning arrester are installed on the isolation handcart device, and an upper contact arm of the isolation handcart device is connected with a copper bar in the bus room through a contact box; and the lower contact arm of the isolation handcart device is connected with the 3 single-phase PTs through a contact box and a three-phase primary copper bar. The utility model discloses a PT cabinet aims at solving current PT cabinet structural installation, maintains inconvenient technical problem.
Description
Technical Field
The utility model relates to an electrical equipment field especially relates to a PT cabinet convenient to maintain.
Background
In distribution sites such as 10kV switching stations of a power distribution network, industry and civilian use, the PT cabinet provides standard voltage required to be collected for secondary equipment such as secondary instruments and relay protection, and the importance of the PT cabinet is self-evident. The high-voltage switch cabinet that adopts in a large number among the distribution system at present is middle-placed cabinet, and the requirement of the electric scheme of PT cabinet is once: the fuse, the lightning arrester and the voltage transformer are all installed on the PT handcart, and the operation space of a primary element is very limited. When a fault happens, the last primary element, the secondary wiring of the PT handcart are damaged or the PT handcart is burnt, even the whole PT cabinet is scrapped, and the whole PT cabinet needs to be replaced or the PT is maintained and replaced, the dismounting and the remanufacturing of the primary wire and the secondary wire are both very inconvenient, the maintenance time is longer, and the risk of relay protection is higher.
In view of the above, there is a need to provide a PT cabinet which is easy to maintain to solve or at least alleviate the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a main aim at provides a PT cabinet convenient to maintain, the utility model discloses a PT cabinet aims at solving current PT cabinet structural installation, maintains inconvenient technical problem.
In order to achieve the above object, the utility model provides a PT cabinet convenient to maintain, the PT cabinet includes:
the device comprises a cabinet body, a front-side upper instrument room, a front-side middle isolation handcart room, a rear-side upper bus room and a lower cable room, wherein the cabinet body is partitioned by a partition plate to form the instrument room positioned at the front-side upper part, the isolation handcart room positioned at the front-side middle part, the bus room positioned at the rear-side upper part and the cable;
3 single-phase PTs arranged in the cable chamber;
the isolation handcart device is arranged in the isolation handcart room, a fuse protector and a lightning arrester are installed on the isolation handcart device, and an upper contact arm of the isolation handcart device is connected with a copper bar in the bus room through a contact box; and the lower contact arm of the isolation handcart device is connected with the 3 single-phase PTs through a contact box and a three-phase primary copper bar.
Preferably, a contact box mounting plate is arranged between the handcart room and the bus room and between the handcart room and the cable room, a first contact box is mounted on one side, close to the bus room, of the contact box mounting plate, and a second contact box is mounted on one side, close to the cable room, of the contact box mounting plate; the first contact box is connected with an upper contact arm of the isolation handcart device, and the second contact box is connected with a lower contact arm of the isolation handcart device.
Preferably, the fuse is located between an upper contact arm and a lower contact arm of the isolation trolley device.
Preferably, the fuse is a three-phase XRNP type high voltage fuse
Preferably, the arrester is an HY5WZ type zinc oxide arrester.
Preferably, the bottom of the cable chamber is provided with 2 cross beams for carrying the 3 single-phase PTs.
In the scheme of this application, for avoiding leading to the fact the destruction of installing the PT on the handcart because of fuse fusing (burst) or the explosion of bus arrester of protection PT on the handcart, put PT handcart into isolation handcart with traditional in, only install primary element on the isolation handcart device: fuses and lightning arresters. And the most important primary equipment PT in the PT cabinet is moved into a cable chamber at the lower rear part of the cabinet with spacious running space and higher safety. Has the following beneficial effects:
(1) the problem that even if the fuse or the lightning arrester is burst, important equipment PT in the cabinet cannot be damaged is solved, and the fuse or the lightning arrester is more convenient and quicker to replace.
(2) The operation and maintenance are convenient, even if the PT is required to be overhauled or replaced, the operation and maintenance are very convenient, and the overhauling time is greatly shortened.
(3) The reliability of the whole high-voltage distribution system power supply is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
Fig. 1 is a schematic view of the cross-section structure of the PT cabinet of the present invention.
The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.
The reference numbers illustrate:
100-a cabinet body;
110-instrument room, 120-isolated handcart room, 130-bus room and 140-cable room;
200-PT；
300-isolated handcart device, 310-fuse, 320-lightning arrester;
400-contact box mounting plate, 410-first contact box, 420-second contact box.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1, in order to achieve the above objects, the present invention provides a PT cabinet convenient for maintenance, including:
the cabinet 100 is internally partitioned by a partition plate to form an instrument room 110 positioned at the upper part of the front side, an isolated handcart room 120 positioned at the middle part of the front side, a bus room 130 positioned at the upper part of the rear side and a cable room 140 positioned at the lower side;
3 single-phase PT200 (voltage transformers) disposed in the cable chamber 140;
the isolation handcart device 300 is arranged in the isolation handcart room, a fuse 310 and a lightning arrester 320 are installed on the isolation handcart device 300, and an upper contact arm of the isolation handcart device 300 is connected with a copper bar in the bus room 130 through a first contact box 410; the lower contact arm of the isolated handcart device 300 is connected with 3 single-phase PT200 through a second contact box 420 and a three-phase primary copper bar.
Wherein, three single-phase PT200 (voltage transformer) no longer install on isolated wheelbarrow device 300, only install fuse 310 and arrester 320 on isolated wheelbarrow device 300, fuse 310 can set up in isolated wheelbarrow device 300 last contact arm and down contact between the arm, realized the conversion of PT handcart to [ fuse 310+ arrester 320 ] handcart. Further, the fuse 310 is preferably a three-phase XRNP type high voltage fuse, lightning arrester, and the lightning arrester 320 is preferably an HY5WZ type zinc oxide lightning arrester.
In order to arrange the PT200 in the cable chamber, the sealing plate in the cable chamber of the PT cabinet can be moved forward to the cabinet, so as to further enlarge the space of the cable chamber, and 2 mounting beams (not shown) can be added to the bottom of the cable chamber, so as to meet the requirements of the mounting position and the safety distance of 3 single-phase PT 200.
In the scheme of this application, for avoiding leading to the destruction of installing PT200 on the handcart because of fuse 310 fusing (burst) or the explosion of bus arrester 320 of protection PT on the handcart, put PT handcart into isolation handcart with traditional in, only install the primary element on the isolation handcart device 300: a fuse 310 and an arrester 320. And the most important primary devices PT200 in the PT cabinet are moved into the cable chamber 140 in the lower rear of the cabinet, which has a wider operation space and is safer. Has the following beneficial effects:
(1) the problem that even if the fuse 310 or the arrester 320 explodes, important equipment PT in the cabinet cannot be damaged is solved, and the fuse 310 or the arrester 320 is more convenient and quicker to replace.
(2) The operation and maintenance are convenient, the maintenance or the replacement of the PT200 is very convenient, and the maintenance time is greatly shortened.
(3) The reliability of the whole high-voltage distribution system power supply is improved.
As a preferred embodiment of the present invention, a contact box mounting plate 400 is disposed between the bus bar room 130, the cable room 140 and the handcart room 120, a first contact box 410 is mounted on one side of the contact box mounting plate 400 close to the bus bar room 130, and a second contact box 420 is mounted on one side close to the cable room 140; the first contact box 410 is connected to the upper contact arm of the isolated wheelbarrow apparatus 300 and the second contact box 420 is connected to the lower contact arm of the isolated wheelbarrow apparatus 300. In this embodiment, in order to change the PT cabinet handcart room into an isolated handcart room, contact box openings connected with the lower contact arm of the isolated handcart device 300 in three phases are added to the contact box mounting plate 400. Meanwhile, the movable protective baffle of the contact box can be arranged to be linked up and down, so that the conversion from a PT handcart room structure to an isolated handcart room is realized.
The above is only the preferred embodiment of the present invention, and not the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings or the direct or indirect application in other related technical fields are included in the patent protection scope of the present invention.
Claims (5)
1. A PT cabinet convenient to maintain, characterized in that, the PT cabinet includes:
the device comprises a cabinet body, a front-side upper instrument room, a front-side middle isolation handcart room, a rear-side upper bus room and a lower cable room, wherein the cabinet body is partitioned by a partition plate to form the instrument room positioned at the front-side upper part, the isolation handcart room positioned at the front-side middle part, the bus room positioned at the rear-side upper part and the cable;
3 single-phase PTs arranged in the cable chamber;
the isolation handcart device is arranged in the isolation handcart room, a fuse protector and a lightning arrester are installed on the isolation handcart device, and an upper contact arm of the isolation handcart device is connected with a copper bar in the bus room through a contact box; the lower contact arm of the isolation handcart device is connected with the 3 single-phase PTs through a contact box and a three-phase primary copper bar;
a contact box mounting plate is arranged between the isolated handcart room and the bus room and between the isolated handcart room and the cable room, a first contact box is arranged on one side, close to the bus room, of the contact box mounting plate, and a second contact box is arranged on one side, close to the cable room, of the contact box mounting plate; the first contact box is connected with an upper contact arm of the isolation handcart device, and the second contact box is connected with a lower contact arm of the isolation handcart device;
the contact box mounting plate is provided with a contact box opening which is in three-phase connection with a lower contact arm of the isolation handcart device; meanwhile, the first contact box and the second contact box are respectively provided with a contact box movable protective baffle plate which is linked up and down so as to realize the conversion from a PT handcart room structure to an isolation handcart room.
2. A PT cabinet according to claim 1 wherein the fuse is located between the upper and lower contact arms of the isolated wheelbarrow apparatus.
3. A PT cabinet according to any one of claims 1 to 2, wherein the fuse is a three-phase XRNP-type high voltage fuse.
4. A PT cabinet according to any one of claims 1 to 2 wherein the arrester is an HY5WZ type zinc oxide arrester.
5. A PT cabinet according to any one of claims 1 to 2 wherein the bottom of the cable compartment is provided with 2 beams for carrying the 3 single phase PTs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021762629.7U CN213484357U (en) | 2020-08-21 | 2020-08-21 | PT cabinet convenient to maintain |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021762629.7U CN213484357U (en) | 2020-08-21 | 2020-08-21 | PT cabinet convenient to maintain |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213484357U true CN213484357U (en) | 2021-06-18 |
Family
ID=76361321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021762629.7U Active CN213484357U (en) | 2020-08-21 | 2020-08-21 | PT cabinet convenient to maintain |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213484357U (en) |
-
2020
- 2020-08-21 CN CN202021762629.7U patent/CN213484357U/en active Active
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