CN220041536U - Auxiliary device for adjusting isolated phase enclosed bus current transformer - Google Patents
Auxiliary device for adjusting isolated phase enclosed bus current transformer Download PDFInfo
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- CN220041536U CN220041536U CN202321578438.9U CN202321578438U CN220041536U CN 220041536 U CN220041536 U CN 220041536U CN 202321578438 U CN202321578438 U CN 202321578438U CN 220041536 U CN220041536 U CN 220041536U
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- auxiliary device
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- 230000004048 modification Effects 0.000 description 1
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Abstract
The utility model discloses an auxiliary device for adjusting current transformers of isolated closed buses, wherein each current transformer group comprises a plurality of current transformers which are arranged at intervals, and each current transformer group comprises a supporting piece, an anti-collision piece and a lifting piece, wherein the supporting piece is used for penetrating through the current transformer group, the anti-collision pieces are arranged on two adjacent current transformers, the lifting piece is arranged above the supporting piece, and one end of the lifting piece is connected with the supporting piece to lift the supporting piece. According to the auxiliary device for adjusting the isolated phase closed bus current transformer, the supporting piece and the lifting piece are arranged to support the current transformer body through the gap, so that the internal threads of the current transformer body are prevented from being strained by the stress of the bolt part in the adjustment process; on the other hand, the current transformer is protected by arranging the anti-collision piece, so that the current transformer body is prevented from being damaged in the supporting and hoisting process; the auxiliary adjusting device is simple in structure, so that the current transformer can be adjusted more conveniently and rapidly in the overhaul process, and the labor, material and time costs are reduced.
Description
Technical Field
The utility model belongs to the technical field of auxiliary instruments of nuclear power plants, and particularly relates to an auxiliary device for adjusting a phase-separation enclosed busbar current transformer.
Background
The isolated phase enclosed bus of a certain nuclear power station is provided with a whole group of CT (also called current transformer in the text) in a main loop and a plant transformer A, B respectively, and the current transformer measures the current parameters of the bus and relays the unit. The installation form of the current transformer and the bus conductor are in a concentricity ring structure, the current transformer needs to be well fixed, and the current transformer, the bus conductor and the bus shell are kept at uniform distances on the circumference, so that uniform concentricity is kept.
In the nuclear power station, in one-time major repair, the concentricity of a variable CT and a conductor is found to be unsatisfactory, each CT is fixed in position through 12 bolts, only 4 bolts at the top are stressed on site, and the bolts at other positions are in an unstressed state, and if the CT is loosened in the running state, the machine set can jump.
The total number of the certain number of the plant of the nuclear power station is 6 CTs, the plant is divided into two groups, the CTs are sleeved on the bus conductor, the CTs need to be kept at uniform distances from the bus conductor and the bus shell on the circumference, and uniform concentricity is kept. And bus conductors in the middle of the two groups of CTs are connected through copper bars connected with silver plating at two ends, and when the CTs are required to be replaced, the copper bars can be dismantled for lifting the CTs. Each CT is fixed circumferentially by 12 bolts, wherein an aluminum plate is designed on top of the CT and is fixed to the housing by bolts. The aluminum plate is provided with bolt holes, the CT is lifted through the action of 4 bolt threads at the top, 8 bolts at other positions of the circumference are used for supporting the CT, and a total of 12 bolts are matched for fixing and concentricity adjustment of the CT; and CT mounted position is narrow and small, and the middle conductor is connected copper bar length and is 30cm, and two CT intervals are 3cm, and position adjustment and hoist and mount of CT are carried out in so narrow space. That is, the existing method for adjusting the position of the variable CT schedule in the plant of the nuclear power plant is extremely complex and inconvenient, and requires a lot of manpower and material resources and time, and the interior of the CT body is easily pulled during the adjustment process.
Disclosure of Invention
The utility model aims to solve the technical problem of providing an auxiliary device for adjusting a phase-separated enclosed bus current transformer aiming at the defects of the prior art.
The technical scheme adopted for solving the technical problems is as follows: each current transformer group comprises a plurality of current transformers arranged at intervals, and comprises a supporting piece, an anti-collision piece and a lifting piece, wherein the supporting piece is used for penetrating through the current transformer groups, the anti-collision piece is arranged on two adjacent current transformers, the lifting piece is arranged above the supporting piece, and one end of the lifting piece is connected with the supporting piece so as to lift the supporting piece.
Further, preferably, the adjusting auxiliary device further includes a protecting sleeve, the protecting sleeve is sleeved outside the supporting member, an outer wall surface of the protecting sleeve is in a cambered surface shape matched with an inner wall surface of the current transformer, and the protecting sleeve is in surface contact with the current transformer.
Further, preferably, at least two lifting members are provided, and at least two lifting members are respectively provided at both ends of the supporting member.
Further, preferably, a limiting groove is formed in the bottom surface of the supporting piece, the limiting groove is matched with the lifting piece, and the lifting piece is clamped in the limiting groove.
Further, it is preferable that the thickness of the crash-proof member is identical to the distance between the adjacent two current transformers, or the thickness of the crash-proof member is smaller than the distance between the adjacent two current transformers.
Further, preferably, the adjustment assisting device further comprises a lifting mechanism for lifting the current transformer away from the lifting mechanism.
Further, preferably, the adjusting auxiliary device further comprises a supporting frame, the supporting frame is arranged above the current transformer, one end of the lifting part is fixed on the supporting frame, and the other end of the lifting part is fixed on the supporting part.
Further, preferably, the lifting member is a sling.
Further, it is preferable that the length of the support member is longer than the width of each current transformer group and does not exceed the gap between the two current transformer groups on both sides.
The implementation of the utility model has the beneficial effects that: according to the adjusting auxiliary device for the isolated phase closed bus current transformer, the CT body can be supported through the supporting piece and the lifting piece through the gaps, so that internal threads of the CT body are prevented from being pulled by stress of a bolt part for fixing in the adjusting process; on the other hand, the anti-collision piece is arranged to protect the CT, so that the CT body is prevented from being damaged in the supporting and hoisting process; the adjusting auxiliary device is simple in structure, so that the CT can be adjusted more conveniently and rapidly by staff in the overhaul process, and the labor, material and time costs are reduced.
Drawings
The utility model will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic illustration of an implementation of the off-phase closed bus current transformer tuning auxiliary device of the present utility model;
FIG. 2 is a schematic view of the structure of the support and bumper;
FIG. 3 is a front view of the bumper;
FIG. 4 is a front view of the protective sleeve.
Detailed Description
For a clearer understanding of technical features, objects and effects of the present utility model, a detailed description of embodiments of the present utility model will be made with reference to the accompanying drawings.
An element is referred to as being "mounted" or "disposed" on another element and may be directly or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.
The directions or positions indicated by the terms "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are directions or positions based on the drawings, and are merely for convenience of description and are not to be construed as limiting the present technical solution. The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "a plurality of" is two or more, unless specifically defined otherwise.
As shown in fig. 1-3, an auxiliary device for adjusting a phase separation enclosed bus current transformer 10 is provided, a plurality of groups of current transformer groups 100 are arranged, each group of current transformer groups 100 comprises a plurality of current transformers 10 arranged at intervals, and the current transformers 10 are sleeved on a bus conductor 200; the adjustment aid includes a support 20 for passing through a single set of current transformer sets 100, a lifting member 40 disposed above the support 20, and an impact member 30.
Wherein, as shown in fig. 2, the supporting member 20 may have a rod-like, bar-like structure or other structure, and passes through all the current transformers 10 in each current transformer group 100 to support the current transformer group 100.
One end of the lifting member 40 is connected to the upper part of the supporting member 20, the upper fixing position can be located on the original fixing facility on the operation site, or can be located on another fixing facility for fixing the lifting member 40, and the other end of the lifting member 40 is connected to the supporting member 20 to lift the supporting member 20, so that the whole lifting of the current transformer set 100 is realized, and the subsequent dismantling, lifting and concentricity adjustment operation of the current transformer 10 can be performed.
The anti-collision member 30 is disposed between two adjacent current transformers 10, and is used for separating the two adjacent current transformers 10; the crash element 30 may be made of a flexible material or a resettable elastic material, such as a polytetrafluoroethylene pad, or a compression elastic element, without limitation; the anti-collision member 30 can be sleeved on the supporting member 20, and can also be directly placed between two adjacent current transformers 10 to protect the current transformers 10 from collision, and prevent the adjacent current transformer 10 body from being damaged in the processes of supporting, hoisting and adjusting one of the current transformers 10, so that the effect of protecting the current transformer 10 body is achieved.
The implementation of the utility model has the beneficial effects that: according to the adjusting auxiliary device for the isolated phase closed bus current transformer 10, the supporting piece 20 and the lifting piece 40 are arranged to support the current transformer 10 body through the gaps, so that internal threads of the current transformer 10 body are prevented from being damaged by stress at the bolt part in the adjusting process; on the other hand, the anti-collision piece 30 is arranged to protect the current transformer 10, so that the current transformer 10 body is prevented from being damaged in the supporting and hoisting process; the auxiliary adjusting device has a simple structure, so that the current transformer 10 can be adjusted more conveniently and rapidly by staff in the overhaul process, and the labor, material and time costs are reduced.
In a specific embodiment, as shown in fig. 4, the preferred adjustment assisting device further includes a protecting sleeve 50, the protecting sleeve 50 is of a hollow structure, the protecting sleeve 50 can be sleeved outside the supporting member 20, the outer wall surface of the protecting sleeve 50 is in contact with the inner wall surface of the current transformer 10, and the protecting sleeve 50 is arranged to protect the inner wall surface of the current transformer 10, so that friction between the supporting member 20 and the inner wall surface of the current transformer 10 is avoided, and internal damage of the current transformer 10 is prevented.
Further, the protecting sleeve 50 is a flexible protecting sleeve, such as a nylon protecting sleeve, a rubber protecting sleeve, etc., and specific materials are not limited, and the flexible protecting sleeve 50 can avoid hard contact between the supporting member 20 and the inner wall surface of the current transformer 10, reduce friction resistance, and further protect the inside of the current transformer 10. Or, the outer wall surface of the protective sleeve 50 provided with the protective sleeve 50 is in a cambered surface shape matched with the inner wall surface of the current transformer 10, and the protective sleeve 50 is in surface contact with the current transformer 10, so that the contact area of the support piece 20 and the current transformer 10 can be increased, the friction resistance is reduced, and the protection of the inside of the current transformer 10 is further realized; or, the protective sleeve 50 is a flexible protective sleeve 50, and meanwhile, the outer wall surface of the protective sleeve 50 is in a cambered surface shape matched with the inner wall surface of the current transformer 10, so that the hard contact between the support piece 20 and the inner wall surface of the current transformer 10 can be avoided, the contact area between the support piece 20 and the inner wall surface of the current transformer 10 can be increased, the friction resistance is reduced, and the protection of the inside of the current transformer 10 is further realized.
In a specific embodiment, at least two lifting members 40 are preferably provided, or two, three, four, etc. may be provided, which is not limited in particular, so that the supporting member 20 is stressed in a balanced manner; at least two lifting members 40 are symmetrically arranged at two ends of the supporting member 20 respectively, so that the arrangement can ensure the stress balance of the supporting member 20 and avoid the side turning of the supporting member 20 due to unbalanced stress during lifting; and are connected to both ends of the supporting member 20, the operation is simple and convenient.
Further, it is preferable that the bottom surface of the supporting member 20 is provided with a limit groove 21, the limit groove 21 is matched with the lifting member 40, the lifting member 40 is clamped in the limit groove 21, the stress point of the lifting member 40 is positioned on one side of the limit groove 21, the situation that the supporting member 20 is not turned over due to the stress point is avoided, the lifting member 40 is limited on the other side, the supporting member 20 is prevented from being turned over due to the fact that the lifting member 40 is stressed, the stable supporting effect of the supporting member 20 is guaranteed, and further collision and damage caused by unbalanced stress of the current transformer 10 in the lifting process are avoided.
In a specific embodiment, the thickness of the anti-collision member 30 is preferably consistent with the distance between two adjacent current transformers 10, or the thickness of the anti-collision member 30 is smaller than the distance between two adjacent current transformers 10, so as to separate the two adjacent current transformers 10, protect the current transformers 10 from collision, prevent the adjacent current transformer 10 body from being damaged during the supporting, hoisting and adjusting of one of the current transformers 10, and achieve the effect of protecting the current transformer 10 body.
In a specific embodiment, the preferred adjustment aid further includes a lifting mechanism (not shown) for lifting the current transformer 10 off, which may be an electric hoist or other lifting mechanism; when the current transformers 10 are supported by the supporting members 20 and the lifting members 40, all fixing bolts on the circumference of the current transformers 10 are removed, then the current transformers 10 are lifted off by the lifting mechanism, and concentricity of the current transformers 10 is adjusted.
In a specific embodiment, the preferred auxiliary adjusting device further includes a supporting frame 60, the supporting frame 60 is a frame structure, the supporting frame 60 is disposed above the current transformer 10 and corresponds to the current transformer 10, the setting of the supporting frame 60 is used for installing the lifting member 40, one end of the lifting member 40 is fixed on the supporting frame 60, the other end is fixed on the supporting member 20, the supporting frame 60 enables the lifting member 40 to have a fixed stress point, and lifting and subsequent operations such as adjusting concentricity of the current transformer 10 are facilitated.
In a specific embodiment, the lifting member 40 is preferably a sling, and the bearing capacity of the sling ensures that the support member 20 and each set of current transformers 10 are lifted smoothly.
In a specific embodiment, the length of the support 20 is preferably longer than the width of each current transformer group 100 and does not exceed the gap between two current transformer groups 100 on either side, so that the arrangement can include the support 20 being able to lift a single current transformer 10 without affecting the current transformer groups 100 of an adjacent group.
The aspects of the present utility model have been described in detail hereinabove. In the foregoing embodiments, the descriptions of the embodiments are focused on, and for those portions of one embodiment that are not described in detail, reference may be made to the related descriptions of other embodiments. Those skilled in the art will also appreciate that the acts and modules referred to in the specification are not necessarily required for the present utility model. In addition, it can be understood that the steps in the method of the embodiment of the utility model can be sequentially adjusted, combined and deleted according to actual needs.
The foregoing description of embodiments of the utility model has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (10)
1. Each group of current transformer groups (100) comprises a plurality of current transformers (10) which are arranged at intervals, and is characterized by comprising a supporting piece (20) which is used for penetrating through the current transformer groups (10), an anti-collision piece (30) which is arranged between two adjacent current transformers (10) and a lifting piece (40) which is arranged above the supporting piece (20), wherein one end of the lifting piece (40) is connected with the supporting piece (20) so as to lift the supporting piece (20).
2. The auxiliary device for adjusting the isolated phase closed bus current transformer according to claim 1, further comprising a protective sleeve (50) for protecting the inner wall surface of the current transformer (10), wherein the protective sleeve (50) is sleeved outside the supporting piece (20), and the outer wall surface of the protective sleeve (50) is in contact with the inner wall surface of the current transformer (10).
3. The isolated phase closed bus current transformer adjustment auxiliary device according to claim 2, wherein the protective sleeve (50) is a flexible protective sleeve, and/or the outer wall surface of the protective sleeve (50) is a cambered surface shape matched with the inner wall surface of the current transformer (10), and the protective sleeve (50) is in surface contact with the current transformer (10).
4. The auxiliary device for adjusting the isolated phase closed bus current transformer according to claim 1, wherein at least two lifting members (40) are provided, and at least two lifting members (40) are symmetrically provided at two ends of the supporting member (20), respectively.
5. The isolated phase closed bus current transformer adjustment auxiliary device according to claim 1, wherein a limiting groove (21) is formed in the bottom surface of the supporting member (20), the limiting groove (21) is matched with the lifting member (40), and the lifting member (40) is clamped in the limiting groove (21).
6. The isolated phase closed bus current transformer adjustment aid according to claim 1, wherein the thickness of the anti-collision member (30) corresponds to the distance between two adjacent current transformers (10), or the thickness of the anti-collision member (30) is smaller than the distance between two adjacent current transformers (10).
7. The off-phase closed bus current transformer adjustment aid according to claim 1, further comprising a lifting mechanism for lifting off the current transformer (10).
8. The auxiliary device for adjusting the isolated phase closed bus current transformer according to claim 1, further comprising a supporting frame (60), wherein the supporting frame (60) is arranged above the current transformer (10), one end of the lifting member (40) is fixed on the supporting frame (60), and the other end is fixed on the supporting member (20).
9. The off-phase closed bus current transformer adjustment aid according to claim 1, wherein the lifting member (40) is a sling.
10. The off-phase closed bus current transformer adjustment aid according to claim 1, wherein the length of the support (20) is longer than the width of each set of current transformers and does not exceed the gap of the two sets of current transformers (10) on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321578438.9U CN220041536U (en) | 2023-06-19 | 2023-06-19 | Auxiliary device for adjusting isolated phase enclosed bus current transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321578438.9U CN220041536U (en) | 2023-06-19 | 2023-06-19 | Auxiliary device for adjusting isolated phase enclosed bus current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220041536U true CN220041536U (en) | 2023-11-17 |
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ID=88732264
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321578438.9U Active CN220041536U (en) | 2023-06-19 | 2023-06-19 | Auxiliary device for adjusting isolated phase enclosed bus current transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220041536U (en) |
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2023
- 2023-06-19 CN CN202321578438.9U patent/CN220041536U/en active Active
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