A connection device for a box-type substation

Abstract

The utility model relates to wiring device technical field discloses a wiring device for box type substation, include: a plurality of casing, a plurality of casing can be spliced into tubular structure, its inside is provided with accommodation cavity, along casing radial direction, a one-to-one correspondence slidingly penetrates the casing of a plurality of clamping blocks, the end face both ends of the clamping block away from casing axis direction are provided with first inclined plane, first inclined plane is along casing middle part to casing end direction on the direction of approaching casing axis direction and is inclined, the surface of first inclined plane is provided with first clamping tooth, and along casing axis direction a one-to-one correspondence slidingly connects two clamping rings on the both ends of casing, two clamping blocks are provided with the second inclined plane of adapting to first inclined plane, is provided with second clamping tooth on second inclined plane, and second clamping tooth and first clamping tooth clamping cooperation. The utility model utilizes first clamping tooth and second clamping tooth each other clamping, makes the inner core clamping of both sides more stable, has reduced the possibility of safety accident occurrence.

Description

Technical Field

[0001] This utility model relates to the field of wiring device technology, and in particular to a wiring device for a prefabricated substation. Background Technology

[0002] Prefabricated substations play a crucial role in modern power systems. They are compact, factory-prefabricated indoor / outdoor power distribution systems that integrate high-voltage switchgear, distribution transformers, and low-voltage distribution equipment according to a specific wiring scheme. The wiring device, as one of its core components, directly affects the stable operation of the entire substation. Efficient and reliable wiring devices ensure stable power transmission, reduce power outage time, and improve power supply reliability, which is of great significance for ensuring the normal operation of social production and residents' lives.

[0003] In existing technology, patent document CN222581506U, entitled "A Quick-Connecting Device for Substation Maintenance," provides a wiring scheme. This scheme uses a first and second housing, with placement grooves on the inner side of the housings and sliding clamping blocks. The inner core of the conductor is clamped and fixed using a threaded ring and a limiting ring. The operation is simple and requires no special tools, improving wiring efficiency to some extent. However, this design still has some problems to be solved in practical applications. Equipment in substations, such as transformers and reactors, generate continuous vibrations during operation. This vibration is transmitted to the wiring device, and the threaded connection between the threaded ring and the housing used in this patent is prone to loosening under long-term vibration. Once the threaded connection loosens, the clamping of the inner core on both sides will loosen, leading to loose wiring. This not only increases contact resistance, resulting in increased power transmission loss, but may also cause local overheating or even short circuits and other safety accidents.

[0004] Given the shortcomings of the existing technology, it is particularly urgent to develop a prefabricated substation wiring device that can effectively solve the problem of loose wiring under vibration. Utility Model Content

[0005] The present invention aims to provide a wiring device for a prefabricated substation to overcome the shortcomings mentioned above.

[0006] In order to achieve the above objectives, the technical solution of this utility model is as follows:

[0007] A wiring device for a prefabricated substation includes:

[0008] Multiple housings, which can be assembled into a tubular structure, with an internal accommodating cavity;

[0009] A plurality of clamping blocks slide through the housing in a corresponding manner along the radial direction of the housing. Each clamping block has a first inclined surface at both ends of its end face away from the housing axis. The first inclined surface is inclined towards the housing axis along the direction from the middle of the housing to the end of the housing, and its surface is provided with first engaging teeth.

[0010] Two clamping rings are slidably connected to both ends of the housing along the axial direction of the housing. The two clamping blocks are provided with a second inclined surface adapted to the first inclined surface. A second locking tooth is provided on the second inclined surface, and the second locking tooth engages with the first locking tooth.

[0011] Furthermore, a reinforcing ring is detachably sleeved on the periphery of the clamping ring, and the engagement points of the first and second engaging teeth are positioned opposite to the reinforcing ring.

[0012] Furthermore, the reinforcing ring and the clamping ring are detachably connected by threads on the outer side wall, and the outer side wall of the reinforcing ring is provided with friction patterns.

[0013] Furthermore, two threaded rings are respectively provided at both ends of the housing on opposite sides of the two clamping rings. The inner sidewall of the threaded ring is detachably connected to the outer sidewall of the housing by threads, and the threaded ring is abutted against the clamping ring.

[0014] Furthermore, the outer diameter of the threaded ring is smaller than the inner diameter of the reinforcing ring.

[0015] Furthermore, the inner wall of the clamping ring is clearance-fitted with the outer wall of the housing. The inner wall of the clamping ring is integrally formed or connected with a plurality of sliding protrusions. The outer wall of the housing is provided with sliding grooves that are adapted to the sliding protrusions. Both the sliding protrusions and the sliding grooves extend along the axial direction of the housing. The sliding protrusions and the sliding grooves are slidably connected in a one-to-one correspondence.

[0016] Furthermore, there are two housings and clamping blocks. A wiring frame is fixedly connected to one end face of the two clamping blocks that are close to each other. The length direction of the wiring frame is parallel to the axis direction of the housing. Multiple through holes are provided on the end face of the wiring frame that is close to the other end face of the two clamping blocks. Multiple pressing blocks are fixedly connected to the other end face of the two clamping blocks that are close to each other. The multiple pressing blocks are slidably connected to the multiple through holes one by one.

[0017] Furthermore, each end of the housing along the axial direction is fixedly connected with a semi-sealing ring, and the two oppositely arranged semi-sealing rings can be joined together to form a ring shape.

[0018] Furthermore, one pair of the two adjacent surfaces of the housing are provided with connecting protrusions, and the other pair of the two adjacent surfaces of the housing are provided with connecting grooves, wherein the connecting protrusions and the connecting grooves are engaged in a snap-fit ​​relationship.

[0019] Furthermore, the wiring frame and clamping block are made of conductive material.

[0020] Compared with the prior art, this utility model has at least the following advantages:

[0021] In use, clamping blocks are installed on the housing. The insulation of the two wire connectors to be connected is stripped to expose the inner core. The wires are then inserted into the housing cavity, with the exposed inner core facing the clamping blocks and the inner cores of the two wires overlapping. Multiple housings are then assembled into a tubular structure. Clamping rings are installed at both ends of the housing. The two clamping rings are brought closer together synchronously. As the clamping rings approach, they drive the clamping blocks to move towards the housing axis, compressing the two inner cores until they are firmly pressed together. This completes the connection of the two wires. Because the first and second clamping teeth interlock, the risk of loosening due to external vibrations is reduced, making the clamping of the inner cores on both sides more stable and reducing the possibility of safety accidents. Attached Figure Description

[0022] 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.

[0023] Figure 1 This is a schematic diagram of the overall structure of the wiring device for the prefabricated substation of this utility model;

[0024] Figure 2 This is a cross-sectional view of the wiring device for the prefabricated substation of this utility model;

[0025] Figure 3 This is an exploded view of the wiring device for the prefabricated substation of this utility model.

[0026] Reference numerals: 1. Housing; 2. Clamping block; 3. First snap-fit ​​tooth; 4. Clamping ring; 5. Second snap-fit ​​tooth; 6. Reinforcing ring; 7. Friction pattern; 8. Threaded ring; 9. Sliding protrusion; 10. Sliding groove; 11. Wiring frame; 12. Through hole; 13. Pressing block; 14. Semi-sealing ring; 15. Connecting protrusion. Detailed Implementation

[0027] 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.

[0028] 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.

[0029] Reference Figure 1-3 This utility model provides a wiring device for prefabricated substations, which can effectively achieve fast and stable connection of conductors, while having good sealing and anti-loosening performance, and is suitable for the connection needs of conductors in prefabricated substations.

[0030] Specifically, it includes a housing 1, clamping blocks 2, and clamping rings 4. Multiple housings 1 are provided, and multiple housings 1 can be assembled into a tubular structure, which has an internal accommodating cavity. The number of clamping blocks 2 is equal to that of housings 1, and they are arranged one-to-one. The clamping blocks 2 slide through the housings 1 in the radial direction. Both ends of the clamping blocks 2 away from the axis of the housing 1 are provided with a first inclined surface. In the direction from the middle to the end of the housing 1, the first inclined surface is inclined towards the axis of the housing 1. The surface of the first inclined surface is provided with a first locking tooth 3, which is a triangular structure. Two clamping rings 4 are arranged one-to-one at the two ends of the housing 1, and the clamping rings 4 are slidably connected to the housing 1 in the axial direction of the housing 1. The inner sidewalls of the two clamping blocks 2 are provided with a second inclined surface that matches the first inclined surface. The second inclined surface is provided with a second locking tooth 5, which is also a triangular structure. The second locking tooth 5 engages with the first locking tooth 3.

[0031] In use, clamping blocks 2 are installed on housing 1. The insulation of the two wire connectors to be connected is stripped to expose the inner core. The wires are then inserted into the receiving cavity of housing 1, so that the exposed inner core is opposite to clamping blocks 2 and the inner cores of the two wires overlap. Then, multiple housings 1 are assembled into a tubular structure. Clamping rings 4 are installed at both ends of housing 1. The two clamping rings 4 are brought closer together synchronously. As the clamping rings 4 approach, they drive clamping blocks 2 to move towards the axis of housing 1, squeezing the two inner cores until they are tightly pressed. At this point, the connection of the two wires is completed. Because the first locking tooth 3 and the second locking tooth 5 are interlocked, the risk of loosening due to external vibration is reduced, making the clamping of the inner cores on both sides more stable and reducing the possibility of safety accidents.

[0032] Preferably, the present invention has two housings 1 and two clamping blocks 2. The two housings 1 can be assembled into a tubular structure, which forms an accommodating cavity for placing the wires to be connected.

[0033] When the clamping ring 4 and the clamping block 2 cooperate, the second locking tooth 5 and the first locking tooth 3 can be tightly engaged, thereby achieving clamping and fixing of the wire. To further enhance the clamping effect, a reinforcing ring 6 is detachably fitted around the periphery of the clamping ring 4, with the reinforcing ring 6 positioned opposite to the engagement points of the first locking tooth 3 and the second locking tooth 5. The reinforcing ring 6 is threaded to the outer wall of the clamping ring 4, allowing for easy installation. Friction patterns 7 are also designed on the outer wall of the reinforcing ring 6, which not only increases friction during operation but also facilitates manual tightening of the reinforcing ring 6.

[0034] On the opposite side of the two clamping rings 4, two threaded rings 8 are respectively provided. The inner walls of these two threaded rings 8 are detachably connected to the outer wall of the housing 1 by threads, and the threaded rings 8 abut against the clamping rings 4. In use, by rotating the threaded rings 8, the two threaded rings 8 are brought closer together. The threaded rings 8 apply a certain pressure to the clamping rings 4, which can drive the two clamping rings 4 to move closer together. After the clamping rings 4 are in place, the threaded rings 8 can be removed, so that the threaded rings 8 can be reused repeatedly. Alternatively, the threaded rings 8 can be left on the housing 1 to enhance the locking stability between the clamping rings 4 and the clamping block 2.

[0035] Optionally, the outer diameter of the threaded ring 8 is designed to be smaller than the inner diameter of the reinforcing ring 6. This dimensional relationship ensures that when the reinforcing ring 6 is installed after the clamping ring 4 is in place, the reinforcing ring 6 can be installed without removing the threaded ring 8. At this time, the threaded ring 8 and the reinforcing ring 6 will not interfere with each other, and the reinforcing ring 6 can be smoothly fitted onto the clamping ring 4.

[0036] In this invention, the threaded ring 8 and the housing 1 are connected by threads. To reduce friction between the clamping ring 4 and the threads on the housing 1, and to reduce wear on the threads on the surface of the housing 1, the inner wall of the clamping ring 4 and the outer wall of the housing 1 are fitted with a clearance. This fit ensures that the clamping ring 4 can slide freely on the housing 1 while maintaining the precision of the fit. Several sliding protrusions 9 are integrally formed or connected on the inner wall of the clamping ring 4, while sliding grooves 10 that match the sliding protrusions 9 are provided on the outer wall of the housing 1. These sliding protrusions 9 and sliding grooves 10 extend along the axial direction of the housing 1 and are slidably connected one-to-one. This sliding connection structure not only guides the clamping ring 4 in the correct sliding direction on the housing 1 and prevents the clamping ring 4 from deviating during sliding, but also improves the structural stability and reliability of the entire device.

[0037] A wiring frame 11 is fixedly connected to one of the two clamping blocks 2, which are close to each other. The wiring frame 11 is a square tube structure, and its length direction is parallel to the axis of the housing 1. Multiple through holes 12 are provided on the other end face of the wiring frame 11, near the two clamping blocks 2. Multiple clamping blocks 13 are fixedly connected to the other end face of the two clamping blocks 2, and these clamping blocks 13 are slidably connected to the through holes 12 one-to-one. During wiring, the inner core of the wire passes through the wiring frame 11, and then the clamping blocks 13 press and fix the inner core of the wire onto the wiring frame 11, thereby achieving rapid connection of the wires. This structure can prevent the inner core from becoming loose when connecting multiple strands, thus avoiding poor contact. The wiring frame 11 and the clamping blocks 13 are both made of conductive material, while other structures are made of insulating material, which ensures good electrical connection between the wires and guarantees stable current transmission.

[0038] To improve the sealing performance of the device, semi-sealing rings 14 are fixedly connected to both ends of the housing 1 along the axial direction. When the two housings 1 are joined together, the two opposing semi-sealing rings 14 can be combined to form a complete circular structure. The sealing rings can be used to clamp the insulation layer of the wires and fix the wires. In addition, this sealing structure can effectively prevent external dust, moisture and other impurities from entering the interior of the housing 1, thereby protecting the wire connection parts from the influence of the external environment, extending the service life of the wires, and improving the reliability and stability of the entire device.

[0039] On the adjacent surfaces of the two housings 1, one housing 1 has a connecting protrusion 15, while the other housing 1 has a connecting groove (not shown in the drawings). By engaging the connecting protrusion 15 with the connecting groove, a quick and secure connection between the two housings 1 can be achieved. This connection structure is not only simple and convenient to operate, but also ensures the integrity and stability of the two housings 1 after assembly, ensuring the performance of the device during use.

[0040] Specific operating steps of this utility model:

[0041] a. Preparing the wires: First, strip an appropriate length of insulation from the ends of the two wires to be connected, exposing the inner core of the wires.

[0042] b. Install housing 1 and clamping block 2: Slide the two clamping blocks 2 through housing 1 in the radial direction, so that the inner core of the wire is inserted into the receiving cavity from one end of housing 1, specifically into the wiring frame 11, and ensure that the inner cores of the two wires partially overlap, so that the insulation layer of the wire is opposite to the semi-sealing ring 14; engage the connecting protrusion 15 of one housing 1 with the connecting groove of the other housing 1 to achieve a firm connection between the two housings 1, and assemble the two housings 1 into a tubular structure.

[0043] c. Install clamping ring 4 and reinforcing ring 6: Slide two clamping rings 4 along the axis of housing 1 to both ends of housing 1, so that the second inclined surface of clamping ring 4 fits against the first inclined surface of clamping block 2; On the opposite side of the two clamping rings 4, tighten two threaded rings 8 onto the outer wall of housing 1 through threaded connection. By rotating the two threaded rings 8, bring the two threaded rings 8 closer to each other and achieve mutual contact between the threaded rings 8 and clamping ring 4. Continue to rotate the two threaded rings 8 to bring the two clamping rings 4 closer to each other until the clamping block 13 presses the inner core of the wire; Then, put the reinforcing ring 6 on the periphery of clamping ring 4 so that the reinforcing ring 6 fits tightly against clamping ring 4, thereby further enhancing the clamping effect.

[0044] Through the above steps, the wiring device for this prefabricated substation can achieve fast and stable connection of conductors, while having good sealing and anti-loosening performance. It effectively solves the problems existing in the prior art and improves the reliability and safety of conductor connections in prefabricated substations.

[0045] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0046] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A terminal device for a box-type substation, characterized by comprising: include: Multiple housings (1), the multiple housings (1) can be assembled into a tubular structure, which has an accommodating cavity inside; Along the radial direction of the housing (1), a plurality of clamping blocks (2) slide through the housing (1) one-to-one. Each clamping block (2) has a first inclined surface at both ends of its end face away from the axis of the housing (1). The first inclined surface is inclined towards the axis of the housing (1) from the middle to the end of the housing (1). The surface of the first inclined surface is provided with first engaging teeth (3). Two clamping rings (4) are slidably connected to both ends of the housing (1) along the axial direction of the housing (1). The two clamping blocks (2) are provided with a second inclined surface that is adapted to the first inclined surface. A second locking tooth (5) is provided on the second inclined surface. The second locking tooth (5) engages with the first locking tooth (3).

2. The junction for a box-type substation according to claim 1, characterized in that, The clamping ring (4) is detachably fitted with a reinforcing ring (6) on its periphery, and the engagement points of the first engaging tooth (3) and the second engaging tooth (5) are positioned opposite to the reinforcing ring (6).

3. The cubicle transformer connection device according to claim 2, characterized in that The reinforcing ring (6) is detachably threaded to the outer wall of the clamping ring (4), and the outer wall of the reinforcing ring (6) is provided with friction patterns (7).

4. The junction for a box-type substation according to claim 2, characterized in that, Located on opposite sides of the two clamping rings (4), two threaded rings (8) are respectively provided at both ends of the housing (1). The inner sidewall of the threaded ring (8) is detachably connected to the outer sidewall of the housing (1) by threads, and the threaded ring (8) is abutted against the clamping ring (4).

5. The cubicle transformer connection device according to claim 4, characterized in that The outer diameter of the threaded ring (8) is smaller than the inner diameter of the reinforcing ring (6).

6. The connection device for a box-type substation according to any one of claims 1 to 5, characterized in that, The inner wall of the clamping ring (4) is clearance-fitted with the outer wall of the housing (1). The inner wall of the clamping ring (4) is integrally formed or connected with a plurality of sliding protrusions (9). The outer wall of the housing (1) is provided with sliding grooves (10) that are adapted to the sliding protrusions (9). The sliding protrusions (9) and the sliding grooves (10) both extend along the axial direction of the housing (1). The sliding protrusions (9) and the sliding grooves (10) are slidably connected in a one-to-one correspondence.

7. The junction for a box-type substation according to claim 6, characterized in that The number of housing (1) and clamping blocks (2) is two. A wiring frame (11) is fixedly connected to one end face of the two clamping blocks (2) that is close to each other. The length direction of the wiring frame (11) is parallel to the axis direction of the housing (1). Multiple through holes (12) are provided on the end face of the wiring frame (11) that is close to the other end face of the two clamping blocks (2). Multiple pressing blocks (13) are fixedly connected to the other end face of the two clamping blocks (2). The multiple pressing blocks (13) are slidably connected to the multiple through holes (12) one by one.

8. The wiring device for a prefabricated substation according to claim 7, characterized in that, The shell (1) is fixedly connected to two ends along the axial direction with semi-sealing rings (14), and the two opposite semi-sealing rings (14) can be assembled into a ring shape.

9. The junction for a box-type substation according to claim 7, characterized in that, One pair of adjacent surfaces of the two housings (1) are provided with connecting protrusions (15), and the other pair of adjacent surfaces of the two housings (1) are provided with connecting grooves, wherein the connecting protrusions (15) and the connecting grooves are engaged.

10. The junction for a box-type substation according to claim 7, characterized in that, The wiring frame (11) and the pressing block (13) are made of a conductor material.

Images