Current transformer mounting structure, cable chamber and switchgear
By setting a suspension part on the top wall of the cable compartment cabinet and a connection part on the top of the current transformer, the sliding installation of the current transformer can be realized, which solves the problems of labor-intensive and safety hazards in the existing technology, and achieves labor-saving and safety assurance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DALIAN NO 2 INSTR TRANSFORMER GRP CO LTD
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-14
Smart Images
Figure CN224502698U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of electrical equipment installation technology, and in particular to an installation structure for a current transformer. Background Technology
[0002] Currently, the current transformers used in the KYN28A-12 12KV medium-voltage metal-armored switchgear in China are epoxy resin vacuum-cast pillar-type structures. Due to the relatively high technical parameters of pillar-type current transformers, each weighs approximately 30 kg. Each switchgear is generally equipped with three current transformers, which are vertically suspended on the inner top wall of the switchgear's cable compartment. The commonly used installation method involves three people working together: two people lift the current transformer with both hands and move it to the installation position, while the third person installs the fixing bolts. During the tightening of the bolts, the two people need to maintain the lifting state of the current transformer, which is very labor-intensive and time-consuming. Furthermore, due to the limited space inside the switchgear, the installation difficulty is further increased, and there are also certain safety hazards. Utility Model Content
[0003] The purpose of this utility model is to provide an installation structure, cable compartment and switch cabinet for a current transformer, so as to solve the problems existing in the prior art, save labor and effort, reduce installation difficulty and improve safety.
[0004] To achieve the above objectives, this utility model provides the following solution:
[0005] This utility model provides an installation structure for a current transformer, comprising: a suspension part, which is fixedly mounted on the inner top wall of a cable compartment cabinet, the suspension part extending from the opening end of the cable compartment into the cable compartment, and a first connecting plate on the side of the suspension part away from the inner top wall of the cable compartment, the first connecting plate being vertically spaced from the inner top wall of the cable compartment; and a connecting part, which is fixedly mounted on the top of the current transformer, the side of the connecting part away from the current transformer including a second connecting plate, the second connecting plate being vertically spaced from the current transformer, and the second connecting plate being able to rest on the top surface of the first connecting plate and slide relative to the first connecting plate along the extension direction of the suspension part.
[0006] In some embodiments, the suspension portion includes two first connecting plates and two first wing plates, the two first connecting plates being symmetrically arranged about a symmetrical axis, and the two first wing plates being symmetrically arranged about the symmetrical axis, the symmetrical axis being parallel to the extension direction of the suspension portion, and the side of each first connecting plate being fixedly connected to one side of the first wing plate; the connecting portion includes two second connecting plates and two second wing plates, the two second connecting plates being symmetrically arranged about the symmetrical axis, and the two second wing plates being symmetrically arranged about the symmetrical axis, and the side of each second connecting plate being fixedly connected to one side of the second wing plate.
[0007] In some embodiments, the first connecting plate is fixedly disposed on the side of the first wingplate away from the two axes of symmetry of the first wingplate, and the second connecting plate is fixedly disposed on the side of the second wingplate close to the two axes of symmetry of the second wingplate.
[0008] In some embodiments, the first connecting plate is fixedly disposed on the side of the first wing plate near the two axes of symmetry of the first wing plate, and the second connecting plate is fixedly disposed on the side of the second wing plate away from the two axes of symmetry of the second wing plate.
[0009] In some embodiments, a first end plate is provided at the end of the suspension part near the opening of the cable compartment, and a second end plate is correspondingly provided on the connecting part. The second connecting plate can slide relative to the first connecting plate into the cable compartment cabinet until the second end plate abuts against the first end plate.
[0010] In some embodiments, a groove is formed on the top surface of the first connecting plate along the extension direction of the suspension portion, and a slider is fixedly connected to the bottom surface of the second connecting plate. When the second connecting plate slides relative to the first connecting plate along the extension direction of the suspension portion, the slider slides in the groove.
[0011] In some embodiments, both the first end plate and the second end plate are provided with through holes for fasteners to pass through, and the fasteners can fix the first end plate and the second end plate.
[0012] In some embodiments, the top surface of the first connecting plate and the bottom surface of the second connecting plate are both polished.
[0013] This utility model also provides a cable compartment, including a cable compartment cabinet, a current transformer, and a current transformer mounting structure as described above. The current transformer is mounted on the inner top wall of the cable compartment cabinet through the current transformer mounting structure, and the two terminals of the current transformer are electrically connected to the main circuit inside the cabinet and the cable core wire, respectively.
[0014] This utility model also provides a switch cabinet, including a busbar compartment, a circuit breaker compartment, a relay instrument compartment, and the aforementioned cable compartment, wherein the current transformer is disposed in the cable compartment.
[0015] The present invention achieves the following technical advantages over the prior art:
[0016] This invention features a suspension section on the inner top wall of the cable compartment cabinet and a connecting section on the top of the current transformer. During installation, two people lift the current transformer to the opening of the cable compartment cabinet, with the second connecting plate resting on the top surface of the first connecting plate. The connecting section then allows the current transformer to slide along the extension direction of the suspension section without falling. Only one person is needed to slide the current transformer to the designated position, reducing the number of people required for installation and eliminating the need for workers to continuously lift the current transformer, thus saving labor and reducing installation difficulty. Furthermore, the current transformer will not fall during installation, improving installation safety. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 This is a schematic diagram of the installation structure of the current transformer in one embodiment of Example 1;
[0019] Figure 2 This is a schematic diagram of the installation structure of the current transformer in one embodiment of Example 2;
[0020] Figure 3 This is a side view of the mounting structure of the current transformer in one of the embodiments of Example 1 or 2;
[0021] Figure 4 This is a partial schematic diagram of the installation structure of the current transformer in one embodiment of Example 1;
[0022] Figure 5 This is a partial schematic diagram of the installation structure of the current transformer in another embodiment of Example 1;
[0023] Figure 6 This is a partial schematic diagram of the installation structure of the current transformer in one embodiment of Example 2;
[0024] Figure 7This is a partial schematic diagram of the installation structure of the current transformer in another embodiment of Example 2;
[0025] Figure 8 This is a schematic diagram of the structure of the first end plate and the second end plate in one embodiment of Example 1;
[0026] Figure 9 This is a schematic diagram of the structure of the first end plate and the second end plate in one embodiment of Example 2;
[0027] In the figure: 1-Suspension part; 11-First connecting plate; 12-First fixing plate; 13-First wing plate; 14-First end plate; 2-Connecting part; 21-Second connecting plate; 22-Second fixing plate; 23-Second wing plate; 24-Second end plate; 3-Inner top wall of cable compartment cabinet; 4-Current transformer; 5-Fastener. Detailed Implementation
[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0029] The purpose of this utility model is to provide an installation structure, cable compartment and switch cabinet for a current transformer, so as to solve the problems existing in the prior art, save labor and effort, reduce installation difficulty and improve safety.
[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.
[0031] Example 1
[0032] This embodiment provides an installation structure for a current transformer, such as... Figure 1 and 3As shown in Figure 5, the device includes a suspension part 1 and a connecting part 2. The suspension part 1 is fixedly installed on the inner top wall 3 of the cable compartment cabinet. The suspension part 1 extends from the opening end of the cable compartment cabinet into the interior of the cable compartment cabinet. The side of the suspension part 1 away from the inner top wall 3 of the cable compartment includes a first connecting plate 11, which is vertically spaced from the inner top wall 3 of the cable compartment cabinet. The connecting part 2 is fixedly installed on the top of the current transformer 4. The side of the connecting part 2 away from the current transformer 4 includes a second connecting plate 21, which is vertically spaced from the current transformer 4. The second connecting plate 21 can rest on the top surface of the first connecting plate 11 and slide relative to the first connecting plate 11 along the extension direction of the suspension part 1. That is, it slides from the opening end of the cable compartment cabinet into the cable compartment cabinet; when installing the current transformer 4, two people lift the current transformer 4 to the opening end of the cable compartment cabinet, and make the second connecting plate 21 rest on the top surface of the first connecting plate 11. Then the connecting part 2 drives the current transformer 4 to slide along the extension direction of the suspension part 1 on the suspension part 1 without falling down. At this time, only one person needs to slide the current transformer 4 to the designated position to complete the installation of the current transformer 4, which reduces the number of people installing the current transformer 4, and does not require the worker to keep holding the current transformer 4, making the worker more labor-saving and reducing the installation difficulty. The current transformer 4 will not fall during the installation process, which improves the installation safety.
[0033] Specifically, the cable compartment cabinet is a vertical cabinet. The open end of the cable compartment cabinet is the end with an opening on the circumferential side wall of the cable compartment cabinet. The opening is connected to a cabinet door, which can be opened or closed to open or close the cable compartment cabinet.
[0034] In some implementations of this embodiment, such as Figure 1 As shown, the suspension part 1 includes two first connecting plates 11 and two first wing plates 13. The two first connecting plates 11 are symmetrically arranged about a symmetrical axis, and the two first wing plates 13 are symmetrically arranged about a symmetrical axis. The symmetrical axis is parallel to the extension direction of the suspension part. The side of each first connecting plate 11 is fixedly connected to one side of the first wing plate 13. The connection part 2 includes two second connecting plates 21 and two second wing plates 23. The two second connecting plates 21 are symmetrically arranged about a symmetrical axis, and the two second wing plates 23 are symmetrically arranged about a symmetrical axis. The side of each second connecting plate 21 is fixedly connected to one side of the second wing plate 23. When the two second connecting plates 21 can be respectively placed on the top surface of the two first connecting plates 11, a uniform suspension force can be applied from both sides of the current transformer 4, making the current transformer 4 more stable when suspended from the top 3 of the cable chamber.
[0035] In some implementations of this embodiment, such as Figure 1As shown, the suspension part 1 also includes a first fixing plate 12, which is fixed to the top of the cable chamber by fasteners. Two first wing plates 13 are fixedly connected to both sides of the first fixing plate 12, and the two first wing plates 13 can also be integrally formed with the first fixing plate 12. The connecting part 2 also includes a second fixing plate 22, which is fixed to the top of the current transformer 4 by fasteners 5. Two second wing plates 23 are fixedly connected to both sides of the second fixing plate 22, and the two second wing plates can also be integrally formed with the second fixing plate 22.
[0036] In some implementations of this embodiment, such as Figure 1 As shown, the first connecting plates 11 are all disposed on the side of the first wing plate 13 away from the axis of symmetry of the two first wing plates 13, and the second connecting plates 21 are all disposed on the side of the second wing plate 23 close to the axis of symmetry of the two second wing plates 23. That is, the second connecting plates 21 slide on the two first connecting plates 11 on the outer side of the two first wing plates 13, and the two second connecting plates 21 are located on the inner side of the two second wing plates 23.
[0037] Specifically, the outer side of the two first wing plates 13 refers to the side of the two first wing plates 13 away from the axis of symmetry of the two first wing plates 13, and the inner side of the two first wing plates 13 extends to the side of the two first wing plates 13 close to the axis of symmetry of the two first wing plates 13.
[0038] In some implementations of this embodiment, such as Figures 4-5 As shown, when the two second connecting plates 21 are respectively mounted on the top surfaces of the two first connecting plates 11 and slide along the extension direction of the suspension part 1, the side of each second wing plate 23 near the axis of symmetry of the two second wing plates is in contact with the side of each first connecting plate 11 away from the axis of symmetry of the two first wing plates, or the side of each second connecting plate 21 near the axis of symmetry of the two second wing plates is in contact with the side of the first wing plate 13 away from the axis of symmetry of the two first wing plates. This limits the amount of offset of the second connecting plate 21 in the plane of the second connecting plate 21 and perpendicular to the extension direction of the suspension part 1, and prevents the second connecting plate 21 from detaching from the first connecting plate 11.
[0039] In some implementations of this embodiment, such as Figure 1 , 3As shown in Figure 8, a first end plate 14 is provided at the opening end of the suspension part 1 near the cable compartment. The first end plate 14 is located inside the two first wing plates 13, and there is a gap between the side edge of the first end plate and the first connecting plate 11 and the first wing plate 13, so as not to affect the sliding of the second connecting plate 21. When the connecting part 2 slides into the cable compartment cabinet on the suspension part 1, the tail end of the connecting part is provided with a second end plate 24. The second connecting plate 21 can slide into the cable compartment cabinet relative to the first connecting plate 11 until the second end plate 24 abuts against the first end plate 14. When the second end plate 24 abuts against the first end plate 14, the current transformer 4 cannot continue to slide into the cable compartment cabinet, thereby limiting the position of the current transformer 4 on the inner top wall 3 of the cable compartment cabinet.
[0040] In some embodiments of this example, the top surface of the first connecting plate 11 is provided with a groove along the extension direction of the suspension part 1, and the bottom surface of the second connecting plate 21 is connected with a slider. When the second connecting plate 21 slides relative to the first connecting plate 11 along the extension direction of the suspension part 1, the slider slides in the groove, so that the second connecting plate 21 slides on the first connecting plate 11.
[0041] In some implementations of this embodiment, such as Figure 1 and 3 As shown, both the first end plate 14 and the second end plate 24 are provided with through holes for fasteners 5 to pass through. The fasteners 5 can fix the first end plate 14 and the second end plate 24, so that the second connecting plate 21 will no longer move relative to the first connecting plate 11, thereby fixing the position of the current transformer 4 on the inner top wall 3 of the cable room cabinet and preventing the position of the current transformer 4 from changing when the cable room cabinet vibrates at high frequency and small amplitude.
[0042] In some embodiments of this example, the first connecting plate 11 and the second connecting plate 21 both have through holes in their overlapping areas. Fasteners 5 can pass through these through holes and fix the first connecting plate 11 and the second connecting plate 21, preventing relative movement between the second connecting plate 21 and the first connecting plate 11. This fixes the position of the current transformer 4 on the inner top wall 3 of the cable compartment cabinet, preventing changes in the position of the current transformer 4 during high-frequency, small-amplitude vibrations of the cable compartment cabinet. In some embodiments, the top surface of the first connecting plate and the bottom surface of the second connecting plate are polished to reduce friction between them, allowing the second connecting plate to slide more easily on the first connecting plate.
[0043] In some embodiments of this example, both the suspension part and the connection part are insulated to prevent electricity from being transmitted to the cabinet structure of the switchgear, thus ensuring electrical safety.
[0044] During use, when installing the current transformer 4, two people lift the current transformer 4 to the opening end of the cable compartment cabinet, and place the second connecting plate 21 on the top surface of the first connecting plate 11. Then, the connecting part 2 drives the current transformer 4 to slide along the extension direction of the suspension part 1 into the cable compartment cabinet without falling down, until the second end plate 24 abuts against the first end plate 14. Then, the first end plate 14 and the second end plate 24 are fixed with fasteners 5, or the first connecting plate 11 and the second connecting plate 21 are fixed with fasteners 5, so as to fix the position of the current transformer 4 on the inner top wall 3 of the cable compartment cabinet, so as to prevent the position of the current transformer 4 from changing when the cable compartment cabinet vibrates at high frequency and small amplitude, thereby completing the installation of the current transformer 4.
[0045] Example 2
[0046] In some implementations of this embodiment, such as Figure 2 As shown, the first connecting plates 11 are all disposed on the side of the first wing plate 13 close to the axis of symmetry of the two first wing plates 13, and the second connecting plates 21 are all disposed on the side of the second wing plate 23 away from the axis of symmetry of the two second wing plates 23. That is, the second connecting plates 21 slide on the two first connecting plates 11 on the inner side of the two first wing plates 13, and the two second connecting plates 21 are located on the outer side of the two second wing plates 23.
[0047] In some implementations of this embodiment, such as Figures 6-7 As shown, when the two second connecting plates 21 overlap the top surfaces of the two first connecting plates 11 and slide along the extension direction of the suspension part 1, the side of each second wing plate 23 away from the axis of symmetry of the two second wing plates is in contact with the side of each first connecting plate 11 near the axis of symmetry of the two first wing plates, or the side of each second connecting plate 21 away from the axis of symmetry of the two second wing plates is in contact with the side of the first wing plate 13 near the axis of symmetry of the two first wing plates. This limits the amount of offset of the second connecting plate 21 in the plane of the second connecting plate 21 and perpendicular to the extension direction of the suspension part 1, and prevents the second connecting plate 21 from detaching from the first connecting plate 11.
[0048] In some implementations of this embodiment, such as Figure 2 , 3As shown in Figure 9, a first end plate 14 is provided at the opening end of the suspension part 1 near the cable compartment. The first end plate 14 is located inside the two first wing plates 13, and there is a gap between the side edge of the first end plate and the first connecting plate 11 and the first wing plate 13, so as not to affect the sliding of the second connecting plate 21. When the connecting part 2 slides into the cable compartment cabinet on the suspension part 1, the tail end of the connecting part is provided with a second end plate 24. The second connecting plate 21 can slide into the cable compartment cabinet relative to the first connecting plate 11 until the second end plate 24 abuts against the first end plate 14. When the second end plate 24 abuts against the first end plate 14, the current transformer 4 cannot continue to slide into the cable compartment cabinet, thereby limiting the position of the current transformer 4 on the inner top wall 3 of the cable compartment cabinet.
[0049] Example 3
[0050] This embodiment provides a cable compartment, including a cable compartment cabinet, a current transformer, and a current transformer mounting structure as described in Embodiment 1 or Embodiment 2. The current transformer is mounted on the inner top wall of the cable compartment cabinet through the current transformer mounting structure, and the two terminals of the current transformer are electrically connected to the main circuit inside the cabinet and the external cable, respectively.
[0051] Example 4
[0052] This embodiment provides a switch cabinet, including a busbar compartment, a circuit breaker compartment, a relay instrument compartment, and a cable compartment as described in Embodiment 3. The busbar compartment is used to house and support the main busbar (including phase lines, neutral lines, etc.) to realize the collection and distribution of electrical energy. The circuit breaker compartment is equipped with a removable vacuum circuit breaker trolley, which is the main switch operation center of the switch cabinet. The instrument compartment is used to install secondary control, protection, measurement, and signal components. The cable compartment is used to install current transformers and surge arresters, and the main circuit inside the cabinet is electrically connected to the external cable through the current transformers.
[0053] This utility model uses specific examples to illustrate its principles and implementation methods. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the idea of this utility model. In summary, the content of this specification should not be construed as a limitation of this utility model.
Claims
1. A current transformer mounting structure, characterized in that: include: A suspension part, which is fixedly installed on the inner top wall of the cable compartment cabinet, extends from the open end of the cable compartment cabinet into the interior of the cable compartment cabinet, and has a first connecting plate on the side of the suspension part away from the inner top wall of the cable compartment cabinet, the first connecting plate being vertically spaced from the top wall of the cable compartment cabinet; and The connecting part is used to be fixedly installed on the top of the current transformer. The side of the connecting part away from the current transformer includes a second connecting plate. The second connecting plate is spaced apart from the current transformer in the vertical direction. The second connecting plate can be placed on the top surface of the first connecting plate and slide relative to the first connecting plate along the extension direction of the suspension part.
2. The current transformer mounting structure according to claim 1, characterized in that, The suspension portion includes two first connecting plates and two first wing plates. The two first connecting plates are symmetrically arranged about a symmetrical axis, and the two first wing plates are symmetrically arranged about the symmetrical axis. The symmetrical axis is parallel to the extension direction of the suspension portion. The side of each first connecting plate is fixedly connected to one side of the first wing plate. The connecting portion includes two second connecting plates and two second wing plates. The two second connecting plates are symmetrically arranged about the symmetrical axis, and the two second wing plates are symmetrically arranged about the symmetrical axis. The side of each second connecting plate is fixedly connected to one side of the second wing plate.
3. The current transformer mounting structure according to claim 2, characterized in that, The first connecting plates are all fixedly disposed on the side of the first wing plate away from the two axes of symmetry of the first wing plate, and the second connecting plates are all fixedly disposed on the side of the second wing plate close to the two axes of symmetry of the second wing plate.
4. The current transformer mounting structure according to claim 2, characterized in that, The first connecting plates are all fixedly disposed on the side of the first wing plate close to the two axes of symmetry of the first wing plate, and the second connecting plates are all fixedly disposed on the side of the second wing plate away from the two axes of symmetry of the second wing plate.
5. The current transformer mounting structure according to claim 1, characterized in that, The suspension part is provided with a first end plate near the opening end of the cable compartment cabinet. When the connecting part slides on the suspension part toward the cable compartment cabinet, a second end plate is provided on the tail end of the connecting part. The second connecting plate can slide relative to the first connecting plate toward the cable compartment cabinet until the second end plate abuts against the first end plate.
6. The current transformer mounting structure according to claim 1, characterized in that, The top surface of the first connecting plate is provided with a groove along the extension direction of the suspension part, and the bottom surface of the second connecting plate is fixedly connected with a slider. When the second connecting plate slides relative to the first connecting plate along the extension direction of the suspension part, the slider slides in the groove.
7. The current transformer mounting structure according to claim 5, characterized in that, Both the first end plate and the second end plate have through holes for fasteners to pass through, and the fasteners can fix the first end plate and the second end plate.
8. The current transformer mounting structure according to claim 1, characterized in that, The top surface of the first connecting plate and the bottom surface of the second connecting plate are both polished.
9. A cable housing, characterized in that, The device includes a cable compartment cabinet, a current transformer, and a current transformer mounting structure as described in any one of claims 1 to 8. The current transformer is mounted on the inner top wall of the cable compartment cabinet via the current transformer mounting structure, and the two terminals of the current transformer are electrically connected to the main circuit inside the cabinet and the cable core wire, respectively.
10. A switch cabinet, characterized in that, It includes a busbar compartment, a circuit breaker compartment, a relay instrument compartment, and a cable compartment as described in claim 9, wherein the current transformer is disposed in the cable compartment.