Prefabricated connecting assembly and connecting method for distribution transformer rack

Abstract

The invention provides a prefabricated connecting assembly and method for a distribution transformer rack. A supporting structure comprises a supporting column, the lower end of the supporting column is fixed to the ground, and a supporting frame is installed at the upper end of the supporting column; a first cross beam is detachably installed in the middle of the supporting column, the first cross beam comprises two supporting steel plates, bolts and locknuts, the two supporting steel plates are connected through the bolts and the locknuts, and the first cross beam is used for supporting a transformer and a power transformation box; a second cross beam is detachably installed on the upper portion of the supporting column and located above the first cross beam, and the conductive frame is installed on the second cross beam; the electrical connection structure comprises a terminal connector and a self-locking connector, the terminal connector is provided with a temperature measurement module, and when the cable is connected with the conductive frame, the connection cable is electrically connected with the conductive frame through the terminal connector; according to the invention, the stability and safety of the power system can be improved, the operation and maintenance cost can be obviously reduced, and the high-quality development of the power industry can be promoted.

Description

TECHNICAL FIELD

[0001] The present application relates to the electrical field, in particular, to a prefabricated connection assembly of transformer substation platform and a connection method. BACKGROUND

[0002] The existing prefabricated connection assembly of transformer substation platform plays a vital role in the power system, but its traditional installation method and process flow have many shortcomings. This kind of assembly usually needs to be constructed on site, which means that all process steps and connection points must be completed on site. This way not only inefficient, but also extremely susceptible to environmental factors, such as weather changes, construction conditions restrictions, etc., which may lead to uneven installation quality. More importantly, since all processes and connection points are made on site, some implicit quality problems are difficult to be found in the immediate conditions. For example, whether the strength and waterproof performance of the connection point meet the standards, and whether the insulation material is damaged, etc. These problems often need a long time to run before they are exposed. Once these problems are revealed during the operation of the equipment, it has caused irreversible damage, and even may cause safety accidents, posing a serious threat to the stable operation of the power system. In addition, due to the characteristics of on-site production, it is extremely difficult to trace the quality. Once the equipment fails, it is difficult to accurately determine which link is the problem, which not only increases the difficulty and cost of maintenance, but also seriously affects the reliability and service life of the equipment.

[0003] Therefore, there is an urgent need for a prefabricated connection assembly of transformer substation platform and a connection method, and a new type of connection assembly and its installation process that is more efficient, more reliable, and easier to trace the quality. It helps to improve the stability and safety of the power system, and can significantly reduce the operation and maintenance cost. SUMMARY

[0004] A prefabricated connection assembly of transformer substation platform and a connection method are designed to improve the stability and safety of the power system, and can significantly reduce the operation and maintenance cost.

[0005] The present application provides a prefabricated connection assembly of transformer substation platform and a connection method, comprising a support structure, an electrical connection structure, and a temperature measurement module, wherein: The support structure comprises a support column, the lower end of which is fixed to the ground, and the upper end of which is installed with a support frame; a first cross beam is detachably installed in the middle of the support column, the first cross beam comprises two support steel plates, bolts and lock nuts, the two support steel plates are connected by the bolts and the lock nuts, and the first cross beam is used to support the transformer and the transformer box; a second cross beam is detachably installed on the upper part of the support column and above the first cross beam, and a conductive frame is installed on the second cross beam; The electrical connection structure comprises a terminal connector and a self-locking connector, the terminal connector is provided with a temperature measurement module, and the cable is electrically connected with the electrically conductive frame through the terminal connector when the cable is connected with the electrically conductive frame. The self-locking connector comprises a base, a clamping block, a first adjusting bolt, a clamping assembly, and an insulating box. The base is electrically connected with the post head of the transformer. The first adjusting bolt is threadedly connected with the base, and one end of the first adjusting bolt is rotationally connected with the clamping block. The clamping assembly is arranged on the base, the base is provided with a mounting groove, the clamping block is arranged in the mounting groove, the inner wall of the mounting groove is provided with a first wavy surface, the clamping block is provided with a second wavy surface, the first wavy surface is opposite to the second wavy surface, and the first wavy surface and the second wavy surface jointly form a clamping space. The insulating box is detachably arranged on the base, and the cable and the post head of the transformer are clamped on the base, so that the base, the clamping block, the first adjusting bolt and the clamping assembly are wrapped in the insulating box. The temperature measurement module is arranged on one side of the base, the temperature measurement module comprises a temperature sensor, a control panel and a wireless transceiver module, the control panel controls the temperature sensor to monitor the temperature, and the temperature data is sent to a remote monitoring end in real time through the wireless transceiver module.

[0006] Preferably, the first cross beam and the second cross beam each comprise two support steel plates, a bolt and a lock nut, the two support steel plates are connected through the bolt and the lock nut to clamp support columns of different diameters; the transformer, the second cross beam and the support frame are each provided with an insulator, and the electrically conductive frame is installed on the second cross beam through the insulator to fix the cable.

[0007] Preferably, the first wavy surface is provided with two partition columns, a winding gap is formed between the lower end of the partition column and the first wavy surface, the two partition columns divide the first wavy surface into three clamping areas, each clamping area is three small wavy surfaces, the second wavy surface is provided with a column groove for clamping the partition column, the first wavy surface is provided with a winding column, and the second wavy surface is provided with an avoidance groove for clamping the winding column.

[0008] Preferably, the sealing assembly of the self-locking connector comprises an inner tube and a heat shrink tube, and the inner tube is threadedly connected with the wire tube.

[0009] Preferably, the insulating box comprises a first shell, a second shell, a first cover, a second cover; the first clamping part of the first shell and the second clamping part of the second shell are clamped to each other to wrap the base; the first shell and the second shell are clamped to each other to form a containing cavity, a wire outlet hole, a column outlet hole, a first adjusting hole and a second adjusting hole; the containing cavity is in communication with the outside through the wire outlet hole, the column outlet hole, the first adjusting hole and the second adjusting hole; the wire outlet hole is arranged upward and is used for the cable to pass out; the column outlet hole is arranged downward and is used for the column head of the transformer to pass out; the first cover is threadedly connected with the first shell and the second shell and covers the first adjusting hole and the rod head of the first adjusting bolt; the second cover is rotatably installed on the first shell and the second shell and covers the first adjusting hole and the rod head of the second adjusting bolt; the insulating box further comprises an anti-disassembly locking piece; the anti-disassembly locking piece comprises a conductive film and a current variable fluid wrapped in the conductive film; the base is slidably provided with a button, and the first adjusting bolt is provided with a locking spring.

[0010] Preferably, the self-locking connector further comprises a sealing assembly and a locking spring, one end of the locking spring is connected with the base, and the other end is connected with the button; the sealing assembly comprises a sealing gasket, an inner tube arranged on the sealing gasket and a cover; the tube hole of the inner tube is provided with an internal thread hole, the inner tube is provided with a deformation gap, the internal thread hole is in communication with the outside through the deformation gap, and the inner tube is sleeved with an elastic sealing ring; the cover is provided with a first sleeve groove, the first sleeve groove is provided with a wire tube, the wire tube is provided with a wire hole, the cover is provided with an insulating tube such as a heat-shrinkable tube or a cold-shrinkable tube in communication with the wire hole, and the wire tube is provided with an external thread; the sealing gasket is connected with the inner tube in an integrated manner, and the cover and the wire tube are integrated.

[0011] The application further provides a prefabricated connection method for a transformer substation platform, and the connection method comprises the following steps: Step S1: support structure installation The lower end of the support column is fixed to the ground; A support frame is installed on the upper end of the support column; A first cross beam is detachably installed on the middle part of the support column; Two support steel plates are connected through bolts and lock nuts, clamped and fixed on the support column, and used for supporting the transformer and the transformer box; A second cross beam is installed on the upper part of the support column and located above the first cross beam; The conductive frame is installed on the second cross beam through insulators; Step S2: electrical connection structure assembly Self-locking connector installation: The base is electrically connected with the column head of the transformer; The cable is stripped of the outer insulating layer to expose the copper wire; The copper wire is inserted into the clamping space of the base so that the copper wire is attached to the first wave surface and the second wave surface; Divide the copper wire into two parts, pass them through the winding gap, and wrap them around the winding post; Tighten the first adjusting bolt to drive the clamping block to move towards the base and clamp the copper wire; An insulating box is fitted over the outside of the base, covering the base, the clamping block, and the first adjusting bolt; The first adjustment hole is covered by a first cover, and the second adjustment hole is covered by a second cover; Terminal connector installation: Insert the copper wire of the cable into the corrugated hole of the conductive wire sleeve; The conductive wire sleeve is embedded into the second slot of the terminal body; Screw the locking bolt into the mounting threaded hole, pass it through the socket, and abut against the copper wire of the cable; connect the connecting cable to the copper busbar of the conductive frame through the terminal connector; Step S3: Activate the monitoring component The temperature measurement module is installed on the side wall of the base, and the temperature data is transmitted to the remote monitoring terminal in real time through the wireless transceiver module; Vibration sensors are installed on the support columns, the first crossbeam, and the second crossbeam to monitor abnormal vibration signals; Step S4: Anti-loosening and sealing treatment Apply torque to the anti-loosening nut so that the abutting inclined surface of the clamping seat abuts against the support steel plate, triggering the deformation block to deform, thereby tightening the internal thread locking bolt; Install a sealing assembly at the cable exit hole of the self-locking connector: Connect the inner tube to the conduit threaded together, and open the elastic sealing ring to seal the hole wall. The cable insulation layer is covered by heat shrink tubing.

[0012] Preferably, the cable fixing operation of the self-locking connector in step S2 includes: The separator post is inserted into the post slot, and the winding post is inserted into the clearance slot; The copper wire is divided into two parts, passes through the winding gap, and then bends upward at an angle to embed into the clamping areas on both sides.

[0013] Preferably, the anti-loosening treatment in step S4 includes: The second nut body is installed to abut against the first nut body, the push rod is pressed down to insert the locking rod into the locking channel, and the clamping seat is locked.

[0014] Preferably, the installation of the conductive sleeve of the terminal connector in step S2 includes: Connect the third cover to the tube body with threads so that the forked pin is inserted into the fork of the copper wire; The second conductive film is embedded in the guide hole, and the electrorheological fluid is cured to reinforce and fix the conductive wire sleeve.

[0015] The beneficial effects of this invention are as follows: This invention provides a prefabricated connection assembly and method for a distribution transformer platform. All connection components of the distribution transformer platform are prefabricated and standardized. After passing factory inspection, they can be directly installed on-site, reducing construction difficulty and time. The quality and origin of all components are traceable, comprehensively improving construction quality. Prefabricated terminal connectors solve problems such as excessive contact area loss caused by crimping wires to the terminal body and easy wire breakage at the crimping point. By designing self-locking connectors for wires and transformers, problems such as loosening and poor contact caused by wind swaying and thermal expansion and contraction at the platform connection points are solved. The integrated design of connectors and wireless passive sensors enables real-time monitoring and early warning of connector operating temperature. Temperature sensors are installed on key components such as terminal connectors and self-locking connectors to monitor temperature changes in real time. An alarm signal is issued promptly upon detection of abnormal temperature for timely handling. Vibration sensors are installed on the distribution transformer platform to monitor vibration. Abnormal vibration may indicate equipment malfunctions or loosening, requiring timely inspection and repair. The operating status of the distribution transformer platform is monitored and controlled in real time through a remote monitoring system. This helps to identify and address potential problems in a timely manner, improving the reliability and stability of the equipment. Attached Figure Description

[0016] Figure 1 A schematic diagram of the structure of a distribution transformer platform assembled from prefabricated connection components; Figure 2 This is a schematic diagram of the self-locking connector. Figure 3 A partial exploded view of the self-locking connector; Figure 4 An exploded view of a self-locking connector; Figure 5 and Figure 6 All are partial sectional views of the base and clamping blocks; Figure 7 This is a cross-sectional view of a self-locking connector; Figure 8 This is a schematic diagram of the installation of the sealing assembly; Figure 9 This is a schematic diagram of the terminal connector structure; Figure 10 A half-sectional view of the anti-loosening nut.

[0017] In the diagram: Support column 11, First crossbeam 12, Second crossbeam 13, Support frame 14, Terminal connector 15, Self-locking connector 16, Transformer 17, Substation box 18, Insulator 19, Conductor frame 21, Clamping seat 120103, Abutting slope 120109, Deformation block 120108, Locking internal thread 120105, Second nut body 1202, First nut body 1201, Push rod 1205, Locking rod 1204, Locking channel 120112, Guide... Wire sleeve 1502, corrugated hole 150211, terminal body 1501, second slot 15011, locking bolt 1503, mounting threaded hole 15013, insertion hole 150214, third cover 15022, tube body 15021, forked pin 150224, second conductive film 1505, guide hole 1504, electrorheological fluid 1506, base 1601, clamping block 1602, first adjusting bolt 1603, clamping assembly 1604, insulation box 1605 Temperature measuring module 1606, clamping space 1611, mounting groove 16011, first wavy surface 16012, second wavy surface 16021, separator post 16013, winding gap 16015, clamping area 16014, post groove 16022, winding post 16016, clearance groove 16023, sealing assembly 1607, inner tube 16072, heat shrink tubing 16079, wire guide tube 16077, first housing 16050, second housing 16051, first Cover 16052, second cover 16053, cable outlet hole 16054, post outlet hole 16055, first adjustment hole 16056, second adjustment hole 16057, second adjustment bolt 16042, anti-disassembly locking component 1609, button 1608, locking spring 1610, sealing gasket 16071, cover 16073, deformation gap 16074, elastic sealing ring 16075, first sleeve groove 16076, cable passage hole 16078, insulating tube 16079. Detailed Implementation

[0018] To make the technical solution of the present invention easier to understand, the technical solution of the present invention will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.

[0019] Example 1: like Figures 1-9 As shown, a prefabricated connection assembly for a distribution transformer platform includes a support structure, an electrical connection structure, and a temperature measurement module 1606, wherein: The support structure includes a support column 11, the lower end of which is fixed to the ground, and a support frame 14 is installed at the upper end. A first crossbeam 12 is detachably installed in the middle of the support column 11. The first crossbeam 12 includes two support steel plates, bolts, and anti-loosening nuts. The two support steel plates are connected by bolts and anti-loosening nuts. The first crossbeam 12 is used to support the transformer 17 and the transformer box 18. A second crossbeam 13 is detachably installed on the upper part of the support column 11 and is located above the first crossbeam 12. A conductive frame 21 is installed on the second crossbeam 13. The electrical connection structure includes a terminal connector 15 and a self-locking connector 16. The terminal connector 15 is provided with a temperature measuring module 1606. When the cable is connected to the conductive frame 21, the connecting cable is electrically connected to the conductive frame 21 through the terminal connector 15. The self-locking connector 16 includes a base 1601, a clamping block 1602, a first adjusting bolt 1603, a clamping assembly 1604, and an insulating box 1605; Electrical connection between base 1601 and the terminal head of transformer 17; The first adjusting bolt 1603 is threadedly connected to the base 1601, and one end of the first adjusting bolt 1603 is rotatably connected to the clamping block 1602. The clamping assembly 1604 is mounted on the base 1601. The base 1601 is provided with a mounting groove 16011. The clamping block 1602 is disposed in the mounting groove 16011. The inner wall of the mounting groove 16011 is provided with a first wavy surface 16012. The clamping block 1602 is provided with a second wavy surface 16021. The first wavy surface 16012 and the second wavy surface 16021 are opposite to each other. The first wavy surface 16012 and the second wavy surface 16021 together enclose and form a clamping space 1611. The insulating box 1605 is detachably sleeved on the base 1601, and the column heads of the cable and transformer 17 are clamped on the base 1601, so that the base 1601, the clamping block 1602, the first adjusting bolt 1603, and the clamping assembly 1604 are all wrapped inside the insulating box 1605. The temperature measurement module 1606 is installed on one side of the base 1601. The temperature measurement module 1606 includes a temperature sensor, a control board and a wireless transceiver module. The control board controls the temperature sensor to monitor the temperature, and then sends the temperature data to a remote monitoring terminal in real time through the wireless transceiver module.

[0020] The first crossbeam 12 and the second crossbeam 13 each include two supporting steel plates, bolts, and anti-loosening nuts; the two supporting steel plates are connected by bolts and anti-loosening nuts to clamp support columns 11 of different diameters; the transformer 17, the second crossbeam 13, and the support frame 14 are all equipped with insulators 19, and the conductive frame 21 is installed on the second crossbeam 13 through the insulators 19 to fix the cable.

[0021] The first wave surface 16012 is provided with two dividing posts 16013. The lower end of the dividing post 16013 forms a winding gap 16015 between it and the first wave surface 16012. The two dividing posts 16013 divide the first wave surface 16012 into three clamping areas 16014. Each clamping area 16014 is three small wave surfaces. The second wave surface 16021 is provided with a post groove 16022 for the dividing posts 16013 to be inserted. The first wave surface 16012 is provided with a winding post 16016. The second wave surface 16021 is provided with a clearance groove 16023 for the winding post 16016 to be inserted.

[0022] The sealing assembly 1607 of the self-locking connector 16 includes an inner tube 16072 and a heat shrink tube 16079, with the inner tube connected to the cable tube 16077 via a thread.

[0023] The insulating box 1605 includes a first housing 16050, a second housing 16051, a first cover 16052, and a second cover 16053. The first engaging portion of the first housing 16050 and the second engaging portion of the second housing 16051 interlock to enclose the base 1601. After the first housing 16050 and the second housing 16051 interlock, they form a receiving cavity, a cable outlet 16054, a post outlet 16055, a first adjusting hole 16056, and a second adjusting hole 16057. The receiving cavity communicates with the outside through the cable outlet 16054, the post outlet 16055, the first adjusting hole 16056, and the second adjusting hole 16057. The cable outlet 16054 faces upwards and is used for cable passage. The base 16055 is positioned downwards, with the outlet hole 16055 through which the head of the transformer 17 passes; the first cover 16052 is threadedly connected to the first housing 16050 and the second housing 16051 and covers the first adjustment hole 16056 and the rod head of the first adjustment bolt 1603; the second cover 16053 is rotatably mounted on the first housing 16050 and the second housing 16051 and covers the first adjustment hole 16056 and the rod head of the second adjustment bolt 16042; the insulating box 1605 also includes an anti-disassembly locking component 1609; the anti-disassembly locking component 1609 includes a conductive film and an electrorheological fluid wrapped in the conductive film; a button 1608 is slidably mounted on the base 1601, and a locking spring 1610 is mounted on the first adjustment bolt 1603.

[0024] The self-locking connector 16 further includes a sealing assembly 1607 and a locking spring 1610. One end of the locking spring 1610 is connected to the base 1601, and the other end is connected to the button 1608. The sealing assembly 1607 includes a sealing gasket 16071, an inner tube 16072 disposed on the sealing gasket 16071, and a cover 16073. The inner tube 16072 has an internally threaded hole, and the inner tube 16072 has a deformation gap 16074. The internally threaded hole communicates with the outside of the deformation gap 16074. An elastic sealing ring 16075 is fitted onto the inner tube 16072; the cover 16073 has a first groove 16076, on which a wire guide tube 16077 is installed, and the wire guide tube 16077 has a wire guide hole 16078; the cover 16073 has an insulating tube 16079, such as a heat shrink tube or cold shrink tube, that communicates with the wire guide hole 16078; the wire guide tube 16077 has external threads; the sealing gasket 16071 is integrated with the inner tube 16072, and the cover and the wire guide tube 16077 are integrated.

[0025] Example 2: Unlike Example 1, such as Figures 1-9 As shown in this embodiment, a prefabricated connection assembly and connection method for a distribution transformer platform includes: Step S1: Installation of support structure Fix the lower end of the support column 11 to the ground; A support frame 14 is installed on the upper end of the support column 11; The first crossbeam 12 is detachably installed in the middle of the support column 11. Two supporting steel plates are connected by bolts and lock nuts and clamped and fixed to the supporting column 11 to support the transformer 17 and the transformer box 18. A second crossbeam 13 is installed on the upper part of the support column 11, located above the first crossbeam 12; The conductive frame 21 is mounted on the second crossbeam 13 via the insulator 19; Step S2: Assemble the electrical connection structure Self-locking connector 16 installation: Electrically connect the base 1601 to the column of the transformer 17; Strip the outer insulation layer of the cable to expose the bare copper wire; The copper wire is inserted into the clamping space 1611 of the base 1601, so that the copper wire fits the first wave surface 16012 and the second wave surface 16021. The copper wire is divided into two parts, which are then passed through the winding gap 16015 and wound around the winding post 16016. Tighten the first adjusting bolt 1603 to drive the clamping block 1602 to move toward the base 1601 and clamp the copper wire; The insulating box 1605 is fitted over the base 1601, covering the base 1601, the clamping block 1602 and the first adjusting bolt 1603; The first adjustment hole 16056 is covered by the first cover 16052, and the second adjustment hole 16057 is covered by the second cover 16053; Terminal connector 15 installation: Insert the copper wire of the cable into the corrugated hole 150211 of the conductive wire sleeve 1502; The conductive wire sleeve 1502 is embedded into the second slot 15011 of the terminal body 1501; Screw the locking bolt 1503 into the mounting threaded hole 15013, and pass it through the insertion hole 150214 to abut against the copper wire of the cable. Connecting conductor frame 21: The connecting cable is electrically connected to the copper busbar of the conductive frame 21 via the terminal connector 15; Step S3: Activate the monitoring component The temperature measuring module 1606 is installed on the side wall of the base 1601, and the temperature data is transmitted to the remote monitoring terminal in real time through the wireless transceiver module. Vibration sensors are installed on the support column 11, the first crossbeam 12 and the second crossbeam 13 to monitor abnormal vibration signals; Step S4: Anti-loosening and sealing treatment A torque is applied to the anti-loosening nut so that the abutting inclined surface 120109 of the clamping seat 120103 abuts against the support steel plate, triggering the deformation block 120108 to deform, thereby locking the internal thread 120105 of the bolt. Install sealing component 1607 at the outlet hole 16054 of self-locking connector 16: Connect the inner tube 16072 to the through tube 16077 with threads to open the sealing hole wall of the elastic sealing ring 16075. The cable insulation layer is covered with heat shrink tubing 16079.

[0026] The cable securing operation of the self-locking connector 16 in step S2 includes: Separator post 16013 is inserted into post slot 16022, and winding post 16016 is inserted into clearance slot 16023; The copper wire is divided into two parts, passes through the winding gap 16015, and then bends upward 180° to be embedded in the clamping areas 16014 on both sides.

[0027] The anti-loosening treatment in step S4 includes: The second nut body 1202 is installed to abut against the first nut body 1201. The push rod 1205 presses down the locking rod 1204 to insert into the locking channel 120112, locking the clamping seat 120103.

[0028] Step S2, the installation of the conductive sleeve 1502 of the terminal connector 15 includes: Connect the third cover 15022 to the tube 15021 with threads so that the forked pin 150224 is inserted into the fork of the copper wire. The second conductive film 1505 is embedded in the guide hole 1504, and the electrorheological fluid 1506 is cured to reinforce the conductive sleeve 1502 for fixation.

[0029] Example 3: Unlike Examples 1 and 2, such as Figures 1-9 As shown in this embodiment, a prefabricated connection assembly and connection method for a distribution transformer platform are used as follows: The prefabricated connection assembly for the distribution transformer platform includes prefabricated components such as the support column 11, first crossbeam 12, second crossbeam 13, support frame 14, terminal connector 15, self-locking connector 16, transformer 17, transformer box 18, insulator 19, connector 20, and conductor frame 21. These components are widely applicable, allowing for standardized production and on-site assembly. Different quantities and combinations of prefabricated components can be selected to assemble distribution transformer platforms with varying power transmission requirements. Vibration sensors are installed on the support column 11, first crossbeam 12, second crossbeam 13, and support frame 14 for vibration detection and monitoring.

[0030] The assembly method of this application is as follows: First, install the support column 11 on the ground, positioned below the high-voltage cable. A support frame 14 is installed on the upper end of the support column 11, with insulators 19 on the support frame 14 to support the high-voltage cable. Two first crossbeams 12 are installed on the support column 11 to support the transformer 17 and the substation 18, respectively. Multiple second crossbeams 13 are installed above the first crossbeams 12, each with insulators 19 for easy cable routing and fixing. Conductor frames 21 are installed on the second crossbeams 13 via insulators 19, and multiple conductor frames 21 can be installed on each second crossbeam 13. During wiring, one end of the connecting cable is electrically connected to the head of the transformer 17 via a self-locking connector 16, and the other end is electrically connected to the conductor frames 21 on the second crossbeams 13. The conductor frames 21 on adjacent second crossbeams 13 are electrically connected via other connecting cables, and the conductor frame 21 on the uppermost second crossbeam 13 is electrically connected to the connector 20 on the high-voltage cable via a connecting cable. When the connecting cable is connected to the conductor frame 21, a terminal connector 15 is installed on the connecting cable, and the connecting cable is electrically connected to the copper busbar of the conductor frame 21 through the terminal connector 15. In this way, the high voltage of the high voltage cable passes sequentially through the connector 20, multiple connecting cable segments, multiple conductor frames 21, and then reaches the transformer 17, and finally reaches the substation 18 which is electrically connected to the transformer 17.

[0031] By rotating the first adjusting bolt 1603, the second wavy surface 16021 can be moved closer to or further away from the first wavy surface 16012, thereby clamping or releasing the cable. When the first wavy surface 16012 and the second wavy surface are used together to clamp the cable, the cable is made to be wavy and fit against the first wavy surface 16012 and the second wavy surface, which increases the contact area when clamping the cable, improves the clamping stability and current flow, and effectively improves the wind resistance of the self-locking connector 16.

[0032] Example 4: Unlike Examples 1, 2, and 3, such as Figures 1-9 As shown in this embodiment, a prefabricated connection assembly and connection method for a distribution transformer platform are used as follows: The insulating box 1605 also includes an anti-disassembly locking component 1609; the anti-disassembly locking component 1609 includes a first conductive film and a first electrorheological fluid wrapped within the first conductive film. Specifically, when the first housing 16050 and the second housing 16051 are engaged with each other, the second housing 16051 is fitted onto the elastic buckle 16058 of the first housing 16050 through the slot 16059. The second housing 16051 is located outside the elastic buckle 16058, which is close to the base 1601. By squeezing the elastic buckle 16058, the elastic buckle 16058 deforms towards the base 1601, thereby enabling the first housing 16050 and the second housing 16051 to engage or disengage. The base 1601 is provided with a first elastic clamping plate 16018 and a second elastic clamping plate 16019, which are arranged at intervals. One end of the anti-disassembly locking member 1609 is clamped between the first elastic clamping plate 16018 and the second elastic clamping plate 16019, and the other end of the anti-disassembly locking member 1609 extends along the direction of the elastic buckle 16058 near the first housing 16050. Under the elastic clamping of the first elastic clamping plate 16018 and the second elastic clamping plate 16019 and the flow of the electro-hydraulic fluid, the anti-disassembly locking member 1609 abuts against the elastic buckle 16058. When the cable is energized and the power is transmitted to the base 1601, the first electrorheological fluid becomes solid under the action of the current, loses its fluidity, and cannot be squeezed. At this time, the elastic buckle 16058 cannot produce a deformation close to the base 1601, and the slight deformation produced by the second housing 16051 cannot satisfy the separation of the elastic buckle 16058 from the slot 16059. The snap-fit ​​between the first housing 16050 and the second housing 16051 cannot be separated. When the cable is de-energized, there is no current in the base 1601, and the first electrorheological fluid reverts to a liquid state. At this time, the first electrorheological fluid is fluid, and the anti-disconnection locking element 1609 can be compressed (the first elastic clamp 16018 and the second elastic clamp 16019 undergo elastic deformation, increasing the distance between them and accommodating more electrorheological fluid; therefore, the elastic buckle 16058 can press the electrorheological fluid downwards). The elastic buckle 16058 can deform closer to the base 1601, allowing the first housing 16050 and the second housing 16051 to separate. Thus, by providing the anti-disconnection locking element 1609, the self-locking connector 16 is prevented from being accidentally disassembled while energized, improving safety.

[0033] The self-locking connector 16 also includes a sealing component 1607. The sealing component 1607 can improve the sealing performance and prevent moisture and dust from entering the receiving cavity from the outlet hole 16054, which could cause circuit failure, reduce transmission efficiency, cause fire risk, accelerate equipment aging, and affect system stability.

[0034] Furthermore, a first temperature measuring module 1606 is provided on the base 1601. The first temperature measuring module 1606 is installed on one side of the base 1601. The first temperature measuring module 1606 includes a temperature sensor, a control board, and a wireless transceiver module. The control board controls the temperature sensor to monitor the temperature, and then transmits the temperature data to a remote monitoring terminal in real time through the wireless transceiver module. The temperature sensor is a wireless passive temperature measuring instrument. When the cable is running normally, current flows through the clamp, and the wireless passive temperature measuring instrument works.

[0035] The base 1601 is a conductor, typically made of metal. During use, the heat generated by the transformer 17 terminal and the cable end is quickly conducted to the base 1601. Therefore, the first temperature sensing module 1606, mounted on the base 1601, directly monitors the temperature of the base 1601, which indirectly measures the temperature of the transformer 17 terminal and the cable end. In the event of a power failure causing excessively high temperatures at the transformer 17 terminal or cable end, the first temperature sensing module 1606 can promptly report this, alerting personnel to expedite repairs. The first temperature sensing module 1606 is connected to a strap 1612, securing it to one side of the base 1601. Furthermore, a signal transmission port is provided on one side of the mounting slot. The first temperature sensing module 1606, installed within the mounting slot, can transmit signals externally through this port, preventing signal shielding by the metal base 1601.

[0036] Optionally, the sealing gasket 16071 is provided with heat-absorbing sheets, which can effectively absorb the heat on the base 1601 and prevent the base 1601 from overheating.

[0037] It should be noted that the embodiments described herein are only some embodiments of the present invention, and not all implementations of the present invention. These embodiments are merely illustrative and are intended only to provide a more intuitive and clear way to understand the content of the present invention, not to limit the technical solutions described herein. All other implementation methods that can be conceived by those skilled in the art without creative effort, as well as other simple substitutions and variations of the technical solutions of the present invention, without departing from the concept of the present invention, are within the protection scope of the present invention.

Claims

1. A prefabricated connection assembly for a distribution transformer platform, characterized in that, Includes supporting structure, electrical connection structure, and temperature measuring module (1606), among which: The support structure includes a support column (11), the lower end of which is fixed to the ground and the upper end is equipped with a support frame (14); a first crossbeam (12) is detachably installed in the middle of the support column (11), the first crossbeam (12) includes two support steel plates, bolts and anti-loosening nuts, the two support steel plates are connected by bolts and anti-loosening nuts, and the first crossbeam (12) is used to support the transformer (17) and the transformer box (18); a second crossbeam (13) is detachably installed on the upper part of the support column (11) and is located above the first crossbeam (12), and a conductive frame (21) is installed on the second crossbeam (13); The electrical connection structure includes a terminal connector (15) and a self-locking connector (16). The terminal connector (15) is provided with a temperature measuring module (1606). When the cable is connected to the conductive frame (21), the connecting cable is electrically connected to the conductive frame (21) through the terminal connector (15). The self-locking connector (16) includes a base (1601), a clamping block (1602), a first adjusting bolt (1603), a clamping assembly (1604), and an insulating box (1605). Electrical connection between the base (1601) and the column head of the transformer (17); The first adjusting bolt (1603) is threadedly connected to the base (1601), and one end of the first adjusting bolt (1603) is rotatably connected to the clamping block (1602); The clamping assembly (1604) is mounted on the base (1601). The base (1601) is provided with a mounting groove (16011). The clamping block (1602) is located in the mounting groove (16011). The inner wall of the mounting groove (16011) is provided with a first wave surface (16012). The clamping block (1602) is provided with a second wave surface (16021). The first wave surface (16012) and the second wave surface (16021) are opposite to each other. The first wave surface (16012) and the second wave surface (16021) together enclose a clamping space (1611). The insulating box (1605) is detachably fitted onto the base (1601), and the column heads of the cable and transformer (17) are clamped on the base (1601), so that the base (1601), clamping block (1602), first adjusting bolt (1603), and clamping assembly (1604) are all wrapped inside the insulating box (1605); The temperature measurement module (1606) is installed on one side of the base (1601). The temperature measurement module (1606) includes a temperature sensor, a control board and a wireless transceiver module. The control board controls the temperature sensor to monitor the temperature, and then the wireless transceiver module sends the temperature data to the remote monitoring terminal in real time.

2. The prefabricated connection assembly for a distribution transformer platform as described in claim 1, characterized in that, The first crossbeam (12) and the second crossbeam (13) each include two supporting steel plates, bolts, and anti-loosening nuts; the two supporting steel plates are connected by bolts and anti-loosening nuts to clamp support columns (11) of different diameters; the transformer (17), the second crossbeam (13), and the support frame (14) are all equipped with insulators (19), and the conductive frame (21) is installed on the second crossbeam (13) through the insulators (19) to fix the cable.

3. The prefabricated connection assembly for a distribution transformer platform as described in claim 1, characterized in that, The first wave surface (16012) is provided with two dividing posts (16013). The lower end of the dividing post (16013) forms a winding gap (16015) between it and the first wave surface (16012). The two dividing posts (16013) divide the first wave surface (16012) into three clamping areas (16014). Each clamping area (16014) is three small wave surfaces. The second wave surface (16021) is provided with a post groove (16022) for the dividing post (16013) to be inserted. The first wave surface (16012) is provided with a winding post (16016), and the second wave surface (16021) is provided with a clearance groove (16023) for the winding post (16016) to be inserted.

4. The prefabricated connection assembly for a distribution transformer platform as described in claim 1, characterized in that, The sealing assembly (1607) of the self-locking connector (16) includes an inner tube (16072) and a heat shrink tube (16079), with the inner tube being threadedly connected to the conduit (16077).

5. The prefabricated connection assembly for a distribution transformer platform as described in claim 1, characterized in that, The insulating box (1605) includes a first housing (16050), a second housing (16051), a first cover (16052), and a second cover (16053). The first engaging part of the first housing (16050) and the second engaging part of the second housing (16051) engage with each other to enclose the base (1601). After the first housing (16050) and the second housing (16051) engage with each other, they form a receiving cavity, a wire outlet hole (16054), a post outlet hole (16055), a first adjustment hole (16056), and a second adjustment hole (16057). The receiving cavity communicates with the outside through the wire outlet hole (16054), the post outlet hole (16055), the first adjustment hole (16056), and the second adjustment hole (16057). The wire outlet hole (16054) is set upward, and the wire outlet hole (16054) is for the cable to pass through. (16055) is set downwards, and the column hole (16055) is for the column head of the transformer (17) to pass through; the first cover (16052) is threadedly connected to the first housing (16050) and the second housing (16051) and covers the first adjustment hole (16056) and the rod head of the first adjustment bolt (1603); the second cover (16053) is rotatably installed on the first housing (16050) and the second housing (16051) and covers the first adjustment hole (16056) and the rod head of the second adjustment bolt (16042); the insulating box (1605) also includes an anti-disassembly locking component (1609); the anti-disassembly locking component (1609) includes a conductive film and an electrorheological fluid wrapped in the conductive film; the base (1601) is slidably provided with a button (1608), and the first adjustment bolt (1603) is provided with a locking spring (1610).

6. The prefabricated connection assembly for a distribution transformer platform as described in claim 1, characterized in that, The self-locking connector (16) further includes a sealing assembly (1607) and a locking spring (1610). One end of the locking spring (1610) is connected to the base (1601), and the other end is connected to the button (1608). The sealing assembly (1607) includes a sealing gasket (16071), an inner tube (16072) disposed on the sealing gasket (16071), and a cap (16073). The inner tube (16072) has an internal threaded hole, and the inner tube (16072) has a deformation gap (16074). The internal threaded hole communicates with the outside of the deformation gap (16074). An elastic sealing ring (16075) is fitted on the inner tube (16072); the cover (16073) is provided with a first groove (16076), a wire guide tube (16077) is installed on the first groove (16076), the wire guide tube (16077) is provided with a wire guide hole (16078), the cover (16073) is provided with an insulating tube (16079) such as heat shrink tubing or cold shrink tubing that communicates with the wire guide hole (16078), and the wire guide tube (16077) is provided with external threads; the sealing gasket (16071) is connected to the inner tube (16072) as a whole, and the cover body and the wire guide tube (16077) are integrated.

7. A prefabricated connection method for a distribution transformer platform, using the components described in any one of claims 1-6, characterized in that, include: Step S1: Installation of support structure Fix the lower end of the support column (11) to the ground; Install a support frame (14) on the upper end of the support column (11); A first crossbeam (12) can be detachably installed in the middle of the support column (11): Two supporting steel plates are connected by bolts and lock nuts and clamped and fixed to the supporting column (11) to support the transformer (17) and the transformer box (18). A second crossbeam (13) is installed on the upper part of the support column (11), located above the first crossbeam (12); The conductive frame (21) is mounted on the second crossbeam (13) via the insulator (19); Step S2: Assemble the electrical connection structure Installation of self-locking connector (6): Electrically connect the base (1601) to the column of the transformer (17); Strip the outer insulation layer of the cable to expose the bare copper wire; The copper wire is threaded into the clamping space (1611) of the base (1601) so that the copper wire fits the first wave surface (16012) and the second wave surface (16021). The copper wire is divided into two parts, which are then passed through the winding gap (16015) and wound around the winding post (16016). Tighten the first adjusting bolt (1603) to drive the clamping block (1602) to move towards the base (1601) and clamp the copper wire; The insulating box (1605) is fitted over the base (1601) to cover the base (1601), the clamping block (1602) and the first adjusting bolt (1603). The first adjustment hole (16056) is covered by the first cover (16052), and the second adjustment hole (16057) is covered by the second cover (16053). Terminal connector (15) installation: Insert the copper wire of the cable into the corrugated hole (150211) of the conductive wire sleeve (1502). The conductive wire sleeve (1502) is embedded into the second slot (15011) of the terminal body (1501); Screw the locking bolt (1503) into the mounting threaded hole (15013), pass it through the socket (150214) and abut against the copper wire of the cable; connect the connecting cable to the copper busbar of the conductive frame (21) through the terminal connector (15); Step S3: Activate the monitoring component The temperature measuring module (1606) is installed on the side wall of the base (1601) and the temperature data is transmitted to the remote monitoring terminal in real time through the wireless transceiver module. Vibration sensors are installed on the support column (11), the first crossbeam (12) and the second crossbeam (13) to monitor abnormal vibration signals; Step S4: Anti-loosening and sealing treatment A torque is applied to the anti-loosening nut so that the abutting inclined surface (120109) of the clamping seat (120103) abuts against the supporting steel plate, triggering the deformation block (120108) to deform, thereby locking the bolt with the locking internal thread (120105). Install a sealing assembly (1607) at the outlet hole (16054) of the self-locking connector (16): Connect the inner tube (16072) to the through tube (16077) with threads to open the sealing hole wall of the elastic sealing ring (16075); The cable insulation layer is covered by heat shrink tubing (16079).

8. The prefabricated connection method for a distribution transformer platform as described in claim 7, characterized in that, The cable securing operation of the self-locking connector (16) in step S2 includes: The separator post (16013) is inserted into the post groove (16022), and the winding post (16016) is inserted into the clearance groove (16023). The copper wire is divided into two parts, passes through the winding gap (16015), and then bends upward 180° to be embedded in the clamping areas on both sides (16014).

9. The prefabricated connection method for a distribution transformer platform as described in claim 7, characterized in that, Step S4, the anti-loosening treatment, includes: Install the second nut body (1202) to abut the first nut body (1201), push the push rod (1205) to press down the locking rod (1204) to insert into the locking channel (120112), and lock the clamping seat (120103).

10. The prefabricated connection method for a distribution transformer platform as described in claim 7, characterized in that, The installation of the conductive sleeve (1502) of the terminal connector (15) in step S2 includes: Connect the third cover (15022) to the tube (15021) with threads so that the forked pin (150224) is inserted into the fork of the copper wire; The second conductive film (1505) is embedded in the guide hole (1504), and the electrorheological fluid (1506) is cured to strengthen the conductive sleeve (1502) for fixation.

Images