Plug-and-play secondary equipment assembly in transformer substation and operation method

Abstract

The invention discloses a plug-and-play secondary equipment assembly in a transformer substation and an operation method, and the assembly comprises a box body which is provided with through holes in two end walls for a cable to pass through, and a wire holder which is arranged in the box body and is used for connecting the two end walls of the box body. The side wall of the first slot is provided with a plurality of groups of first slots in which cables can be inserted, the elastic plectrum is arranged on one side in the first slot, the conductive plate is arranged at the bottom of the first slot, the elastic plectrum can abut against the cables and exert pressure on the cables, and the fixing assembly penetrates through a through hole and is installed on the side wall of the box body and comprises a locking seat. A plurality of sets of locking grooves are formed in the end face of the locking base in a penetrating mode, sealing gaskets made of elastic materials are installed in the locking grooves, holes are formed in the centers of the sealing gaskets, cables can penetrate through the holes, the sealing gaskets extrude the cables, the wiring process can be faster and more accurate, the cables with different sizes can be matched for unified fixing, and the wiring efficiency is improved. The cable is prevented from being damaged due to self-extrusion caused by clamping, and the connection process and accuracy of the cable are accelerated.

Description

Technical Field

[0001] The present invention relates to the field of cable connection, in particular to a plug-and-play secondary equipment component in a transformer substation and an operating method thereof. Background Art

[0002] With the rapid development of the power grid, new substations are being built and expanded, leading to an increasing number of them. Replacing secondary equipment requires repeated disassembly of wiring and rewiring. Furthermore, significant differences in technical expertise between construction workers and designers can lead to complex situations during construction and commissioning, such as missing cables and wiring errors, which can affect power restoration. Furthermore, when removing old cables, construction workers can easily accidentally touch existing cables or equipment, causing unplanned downtime.

[0003] During the process of fixing the cables, due to the different sizes of the cables, fixing the cables becomes a tricky problem. If the cables become loose, the entire line will stop functioning and even pose a safety hazard. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is that cables of different sizes cannot achieve a unified fixing effect, and when a cable fails and needs to be replaced, errors may occur in the wiring process.

[0005] The above technical problems are solved by the following technical solutions: The present invention proposes a plug-and-play secondary equipment component in a substation, which includes a box body, through holes are opened on the two end walls for cables to pass through, and a terminal block is arranged inside the box body, including several groups of first slots for plugging cables on the side walls, an elastic paddle arranged on one side of the first slot, and a conductive plate arranged at the bottom of the first slot, and the elastic paddle applies pressure on the cable when it abuts against the cable.

[0006] In a preferred embodiment of the plug-and-play secondary device assembly and operation method in a substation of the present invention: a detachable cover is provided on one end face of the box body, and the terminal block can pass through the end face.

[0007] In a preferred embodiment of the plug-and-play secondary equipment assembly and operation method in the substation of the present invention: the elastic pick includes a fixed section fixedly connected to the side wall of the first slot and an extension section abutting the cable, and the connection between the fixed section and the extension section is an arc-shaped setting.

[0008] In a preferred embodiment of the plug-and-play secondary equipment component and operation method in the substation described in the present invention: the first slot opens a sliding slot on one side of the fixed section connected to the elastic paddle, the sliding slot is connected to the first slot, a pressing piece is provided inside the sliding slot, the pressing piece includes a section a sliding in the sliding slot, and a section b sliding in the first slot, the section b squeezes the extension section when it contacts the elastic paddle, the maximum horizontal distance between the extension section and the sliding slot away from the side wall of the fixed section is less than the maximum horizontal distance between the section b and the sliding slot away from the side wall of the fixed section, a limiting block is provided at the connection between the sliding slot and the first slot, the limiting block prevents section a of the pressing piece from disengaging from the sliding slot, and the limiting block does not block the displacement path of the section b during the cooperation process with the elastic paddle, and the horizontal distance between the limiting block and the cable is less than the horizontal distance between section b and the cable after being compressed to the maximum extent.

[0009] In a preferred embodiment of the plug-and-play secondary equipment assembly and operation method in a substation according to the present invention, a fixing assembly is further included, which is installed on the side wall of the box body through a through hole, and includes a locking seat, and a plurality of locking grooves are formed through the end surface of the locking seat, and a sealing gasket of elastic material is installed in the locking groove, and the central opening of the sealing gasket can allow the cable to pass through and squeeze the cable, and the fixing assembly also includes an adjusting bolt threadedly connected to the locking groove, and both ends of the adjusting bolt are through-holes for the cable to pass through, and a pad is provided between the adjusting bolt and the sealing gasket, and the cable passes through the sealing gasket, the pad and the adjusting bolt in sequence;

[0010] The adjusting bolt is rotated to squeeze the sealing gasket through the backing plate, so that the sealing gasket can be elastically expanded in the locking groove, and the sealing gasket expands toward the cable to form a tight contact.

[0011] In a preferred embodiment of the plug-and-play secondary equipment assembly and operation method in the substation described in the present invention: the fixing assembly also includes a socket connected to the locking socket, and several groups of second slots corresponding to the locking groove are opened at both ends of the socket, and the aperture of the second slot is smaller than the aperture of the locking groove. The sealing gasket is abutted by the end face of the socket close to the locking groove and cannot enter the locking groove.

[0012] In a preferred embodiment of the plug-and-play secondary device assembly and operation method in the substation of the present invention: a stripping tube is fixedly provided at the opening at the other end of the second slot, and a stripping groove is formed on the circumferential surface of the stripping tube.

[0013] In a preferred embodiment of the plug-and-play secondary equipment assembly and operation method in the substation of the present invention, the circumference of the stripping trough is smaller than half of the circumference of the stripping tube, so that the cable cannot be separated from the stripping tube through the stripping trough.

[0014] The beneficial effects of the plug-and-play secondary equipment assembly in the transformer substation of the present invention are: making the wiring process faster and more accurate, and adapting to cables of different sizes and diameters for unified fixation.

[0015] Another object of the present invention is to provide a working method for plug-and-play secondary equipment components in a substation, which aims to solve the problem that the cables may be clamped during the fixing process, causing the cables themselves to be squeezed and damaged, and the wiring process is slow and inaccurate.

[0016] In order to solve the above technical problems, the present invention also provides the following technical solutions: a working operation method of a plug-and-play secondary equipment component in a substation, which includes that when locking cables of different diameters, the sealing gasket can be squeezed by adjusting the number of turns of the bolt, thereby ensuring that an adaptive extrusion force is applied to the cable.

[0017] In a preferred embodiment of the plug-and-play secondary equipment component and operation method in the substation described in the present invention: a wire stripping section is reserved for connecting cable segments and placed in a wire stripping tube. When a cable fails, the cable can be stripped through the wire stripping groove on the wire stripping tube. After stripping the wire in the wire stripping tube, a new cable can be connected.

[0018] The beneficial effects of the present invention are: during the process of fixing the cables, the cables are prevented from being squeezed and damaged by clamping, and the cable connection process and accuracy are accelerated. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0020] Figure 1 The figure shows the overall structure of a plug-and-play secondary equipment component in a substation;

[0021] Figure 2 A schematic diagram of the internal structure of a plug-and-play secondary equipment assembly in a substation after the cover plate is removed;

[0022] Figure 3 A schematic diagram showing the disassembly of a locking seat and a plug-in socket in a plug-and-play secondary equipment assembly in a substation is shown;

[0023] Figure 4 A schematic diagram showing the internal disassembly of a locking seat in a plug-and-play secondary equipment assembly in a substation is shown;

[0024] Figure 5 A detailed end view of a socket in a plug-and-play secondary device assembly in a substation is shown;

[0025] Figure 6 A cross-sectional schematic diagram of a terminal block in a plug-and-play secondary device assembly in a substation is shown;

[0026] Figure 7 A schematic structural diagram of a pressing member in a plug-and-play secondary device assembly in a substation is shown;

[0027] Figure 8 A schematic diagram of the structure of an elastic pick in a plug-and-play secondary equipment assembly in a substation is shown;

[0028] Figure 9 The invention shows a cross-sectional view of the cooperation between a locking seat and a plug-in socket in a plug-and-play secondary equipment assembly in a transformer substation. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0030] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0031] Reference Figures 1 to 9 The present embodiment provides a plug-and-play secondary equipment component and operation method in a substation, including a box body 1, with through holes 11 on both end walls for cables to pass through. The through holes 11 are circumferentially sealed to prevent dust from damaging the lines installed inside. A removable cover 12 is provided on one end face of the box body 1, and the terminal block 2 can be passed through the end face, making it easier to remove during the process of disassembly and replacement of the terminal block 2.

[0032] Furthermore, the terminal block 2 is arranged inside the box body 1 and can be fixed in the box body 1 by threaded connection or other operating methods, which are not specifically limited here, so as to ensure the stability of the terminal block 2 and prevent shaking due to external force. The terminal block 2 includes a first slot 21 with several groups of pluggable cables on the side wall. Since the cable sizes used in the substation will be different, the cable sizes connected in the relay terminal box at the substation cabinet end are usually 6 cores, 8 cores, and 12 cores, which are not specifically limited here. Therefore, the size of the first slot 21 should be set to be able to place the cable of the largest size.

[0033] like Figure 3As shown, it should be noted that there are two rows of first slots 21 in the figure, among which the first socket 21 on the side away from the fixed component 3 is the manufacturer's internal cable. The manufacturer's internal cable here refers to the cable that has been integrated into the equipment when it leaves the factory. It is pre-installed in its product by the equipment manufacturer and is used to connect the equipment's own modules or supporting components. It is not used for disassembly and replacement. The first socket 21 on the side close to the fixed component 3 is an external cable. The external cable refers to the cable from outside the substation, which is usually laid by the power company or the user himself and is used to connect the substation secondary equipment with other external systems or equipment. Therefore, when our cable fails, our cable can be stripped and replaced to achieve a plug-and-play effect.

[0034] It is recommended that the elastic pick 22 arranged on one side of the first slot 21 be made of a material with strong elasticity, so as to ensure that when the cable of the maximum size required to be locked is inserted into the first slot 21, the elastic pick 22 will not be damaged when the elastic pick 22 is squeezed. The conductive plate 23 is arranged at the bottom of the first slot 21, and one end of the conductive plate 23 is connected to the cable inserted into the first slot 21, and the other end is connected to the cable connected to the substation, thereby realizing the operation of the entire line. At the same time, the elastic pick 22 can exert pressure on the cable, thereby achieving the effect of locking the cable.

[0035] like Figures 6 to 8 As shown, further, the elastic paddle 22 includes a fixed section 221 fixedly connected to the side wall of the first slot 21 and an extension section 222 abutting the cable. The connection between the fixed section 221 and the extension section 222 is an arc-shaped setting. The arc shape of the connection between the fixed section 221 and the extension section 222 serves to release the elasticity of the extension section 222, thereby ensuring that the extension section 222 will not break during the compression process.

[0036] like Figure 6As shown, further, the first slot 21 opens a sliding slot 24 on one side of the fixed section 221 connected to the elastic paddle 22, the sliding slot 24 is communicated with the first slot 21, and a pressing member 25 is provided inside the sliding slot 24. The surface of the sliding slot 24 is smooth to avoid jamming of the pressing member 25 during sliding in the sliding slot 24. The pressing member 25 includes a section a sliding in the sliding slot 24 and a section b sliding in the first slot 21. The section a of the pressing member 25 can be set longer, and a groove that engages with a screwdriver can be provided at the end of the pressing member 25a away from the section b (the end that can be pressed outside the sliding slot 24), so that a screwdriver can be used to press the pressing member during disassembly. The pressing piece 25 is pressed, and after the displacement of section b, the extension section 222 of the elastic pick 22 is squeezed. The horizontal distance between the limit block 241 and the cable is less than the horizontal distance between section b and the cable after being compressed to the maximum extent. The end of section b of the pressing piece 25 that contacts the elastic pick 22 can be set to an arc shape to ensure that as the pressing piece 25 slides downward, section b contacts the elastic pick 22 while avoiding the risk of contact with the cable. Since if the pressing piece 25 contacts the cable during the downward pressing process, friction between the cable and the cable may cause resistance, thereby causing damage to the cable. Therefore, the side of section b of the pressing piece 25 that contacts the cable can be set to an arc shape.

[0037] Specifically, a limit block 241 is provided at the connection between the sliding groove 24 and the first slot 21. The limit block 241 prevents section a of the pressing member 25 from being disengaged from the sliding groove 24, and the limit block 241 does not block the displacement path of section b in the process of cooperating with the elastic paddle 22. In addition, the setting of the limit block 241 can also cooperate with the connection between section a and section b of the pressing member 25 to limit the position, thereby preventing the pressing member 25 from being disengaged from the limiting cooperation with the sliding groove 24 in the vertical direction.

[0038] Furthermore, the fixing component 3 is installed on the side wall of the box body 1 through the through hole 11, which includes a locking seat 31, and a plurality of locking grooves 311 are formed through the end surface of the locking seat 31, and a cable is installed in each locking groove 311. The number of locking grooves 311 is greater than the number of cables actually used, so that there are always a few spare cables in all the locking grooves 311. When a cable fails, the spare cables in other locking grooves 311 can be used for wiring installation. This operation can greatly save the trouble of finding a docking cable and then going through the tedious process of fixing and installing it. A sealing gasket 32 made of elastic material is installed in the locking groove 311 (the installation here refers to the sealing gasket 32 being tightly fixed to the side wall of the locking groove 311). The central opening of the sealing gasket 32 is for the cable to pass through. When the cable passes through the central opening of the sealing gasket 32, the cable can be passed through the sealing gasket 32 by rotating and plugging it in.

[0039] like Figure 4 and Figure 6As shown, preferably, the fixing assembly 3 also includes an adjusting bolt 33 threadedly connected to the locking groove 311, and both ends of the adjusting bolt 33 are through-holes for cables to pass through. A pad 34 is provided between the adjusting bolt 33 and the sealing gasket 32. At this time, the aperture in the middle of the sealing gasket 32 can be set larger to pass through the maximum size cable connected to the screen cabinet end. In order to avoid damaging the sealing gasket 32 when the cable is inserted through the sealing gasket 32, the cable passes through the sealing gasket 32, the pad 34 and the adjusting bolt 33 in sequence. At this time, it is only necessary to rotate the adjusting bolt 33 to enter the interior of the locking groove 311. As the adjusting bolt 3 3 is rotated, the adjusting bolt 33 begins to contact the pad 34, and the pad 34 is driven to squeeze the sealing gasket 32. Since the sealing gasket 32 is installed in the preferred solution, the sealing gasket 32 is placed inside the locking groove 311 and can move inside the locking groove 311. At this time, the sealing gasket 32 is squeezed, and the outer circumferential side wall will be blocked by the side wall of the locking groove 311. The sealing gasket 32 as a whole will fill the aperture through which the cable passes. At this time, the sealing gasket 32 will elastically expand during the compression process to lock the cable. The sealing gasket 32 can be made of a material with better elasticity, which is not specifically limited here, so that it can be used repeatedly.

[0040] Furthermore, since the cables to be connected are of different thicknesses, the degree of compression of the sealing gasket 32 can be judged by rotating the adjusting bolt 33 and the displacement distance in the locking groove 311. Since the cable sizes commonly used in substations are fixed, the adjusting bolt 33 can be tested and recorded for cables of different thicknesses and sizes until the adjusting bolt 33 squeezes the sealing gasket 32 through the pad 34 to achieve a tight fit without damaging the cable itself. At this time, the number of displacement turns and distance of the adjusting bolt 33 are recorded. Preferably, an integrated mark can be made on the operating rotating end of the adjusting bolt 33 to record the number of rotation turns at the mark or the displacement distance during the rotation of the mark. After recording several cables of different thicknesses and sizes, they can be rotated according to the recorded content during subsequent use, thereby achieving the purpose of tightening the cable while also protecting the cable.

[0041] Furthermore, the fixing component 3 also includes a socket 35 connected to the locking seat 31. The socket 35 and the locking seat 31 can be connected by bolt fitting, gluing, and welding, which are not specifically limited here, and the socket 35 and the locking seat 31 are both fixed to the side wall of the box body 1 to achieve a stable effect. Several groups of second slots 351 corresponding to the locking groove 311 are opened at both ends of the socket 35. The aperture of the second slot 351 is smaller than the aperture of the locking groove 311, and the cable of the largest size can pass through the second slot 351. The side of the sealing gasket 32 close to the locking groove 311 is abutted by the end face of the socket 35 and cannot enter the locking groove 311. Moreover, since the aperture of the second slot 351 is smaller than the locking groove 311, the end of the sealing gasket 32 close to the second slot 351 will be abutted by the side wall of the socket 35.

[0042] Furthermore, a stripping tube 352 is fixedly provided at the opening of one end of the second slot 351 away from the locking slot 311. The stripping tube 352 is used for stripping and connecting wires. A stripping groove 3521 is provided on the circumferential surface of the stripping tube 352. The opening direction of the stripping groove 3521 is toward the side of the cover plate 12, so that the staff can observe more clearly during operation. The circumference of the stripping groove 3521 is less than half of the circumference of the stripping tube 352. This arrangement can first prevent the cable from escaping from the stripping tube 352 through the stripping groove 3521. Secondly, and most importantly, the staff can more clearly see the fit between the cable and the stripping tube 352 and whether the wires are connected incorrectly during the stripping process.

[0043] Finally, it should be pointed out that the operating methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A plug-and-play secondary equipment component in a substation, characterized by: include, The box body (1) has through holes (11) on both end walls for cables to pass through; The wiring seat (2) is arranged inside the box body (1), and comprises a plurality of first slots (21) for plugging cables, a spring-loaded paddle (22) arranged on one side of the first slots (21), and a conductive plate (23) arranged at the bottom of the first slots (21). The spring-loaded paddle (22) applies pressure to the cables when in contact with the cables.

2. The plug-and-play secondary equipment assembly in a substation according to claim 1, characterized in that: A detachable cover plate (12) is provided on one end face of the box body (1), and the wiring seat (2) can pass through the end face.

3. The plug-and-play secondary equipment assembly in a substation according to claim 1 or 2, characterized in that: The elastic pick (22) comprises a fixed section (221) fixedly connected to the side wall of the first slot (21) and an extending section (222) abutting against the cable; The connection between the fixed section (221) and the extension section (222) is arranged in an arc shape.

4. The plug-and-play secondary equipment assembly in a substation according to claim 3, characterized in that: The first slot (21) is provided with a sliding slot (24) on one side of the fixed section (221) connected to the elastic pick (22), the sliding slot (24) being in communication with the first slot (21), a pressing member (25) being provided inside the sliding slot (24), the pressing member (25) comprising a section a sliding in the sliding slot (24), and a section b sliding in the first slot (21), the section b squeezing the extension section (222) when in contact with the elastic pick (22), the maximum horizontal distance between the extension section (222) and the sliding slot (24) away from the side wall of the fixed section (221) being less than the maximum horizontal distance between the section b and the sliding slot (24) away from the side wall of the fixed section (221); A limiting block (241) is provided at the connection point between the sliding groove (24) and the first slot (21), wherein the limiting block (241) prevents the a section of the pressing member (25) from being separated from the engagement with the sliding groove (24), and the limiting block (241) does not block the displacement path of the b section during the engagement process with the elastic pick (22); The horizontal distance between the limiting block (241) and the cable is smaller than the horizontal distance between the segment b and the cable after being compressed to the maximum extent.

5. The plug-and-play secondary equipment assembly in a substation according to claim 1 or 4, characterized in that: The invention also includes a fixing assembly (3), which is installed on the side wall of the box body (1) through the through hole (11), and includes a locking seat (31). The end surface of the locking seat (31) is penetrated by a plurality of locking grooves (311). A sealing gasket (32) made of elastic material is installed in the locking groove (311). The central opening of the sealing gasket (32) can allow the cable to pass through and squeeze the cable. The fixing assembly (3) further comprises an adjusting bolt (33) threadedly connected to the locking groove (311), both ends of the adjusting bolt (33) being through-holes for cables to pass through, a backing plate (34) being provided between the adjusting bolt (33) and the sealing gasket (32), and the cables passing through the sealing gasket (32), the backing plate (34) and the adjusting bolt (33) in sequence; The adjusting bolt (33) is rotated to squeeze the sealing gasket (32) through the backing plate (34), so that the sealing gasket (32) can be elastically expanded in the locking groove (311), and the sealing gasket (32) expands toward the cable to form a close contact.

6. The plug-and-play secondary equipment assembly in a substation according to claim 5, characterized in that: The fixing assembly (3) further comprises a plug-in seat (35) connected to the locking seat (31), and a plurality of groups of second slots (351) coaxially corresponding to the locking slot (311) are provided through both ends of the plug-in seat (35); The aperture of the second slot (351) is smaller than that of the locking slot (311), and the sealing gasket (32) is abutted by the end face of the socket (35) on the side close to the locking slot (311) and cannot enter the locking slot (311).

7. The plug-and-play secondary equipment assembly in a substation according to claim 6, characterized in that: A wire stripping tube (352) is fixedly provided at the opening of the other end of the second slot (351), and a wire stripping groove (3521) is provided on the circumferential surface of the wire stripping tube (352).

8. The plug-and-play secondary equipment assembly in a substation according to claim 7, characterized in that: The circumference of the stripping groove (3521) is smaller than half of the circumference of the stripping tube (352), so that the cable cannot be separated from the stripping tube (352) through the stripping groove (3521).

9. A method for operating a plug-and-play secondary device assembly in a substation, characterized by: The invention is applied to the plug-and-play secondary equipment assembly in the substation as described in any one of claims 1 to 8; and when locking cables of different diameters, the sealing gasket (32) can be squeezed by adjusting the number of turns of the bolt (33), thereby ensuring that an appropriate squeezing force is applied to the cable.

10. The method for operating a plug-and-play secondary device assembly in a substation according to claim 9, characterized in that: The reserved stripping wire is used to connect the cable segments and is placed in the stripping tube (352). When a cable fails, the cable can be stripped through the stripping groove (3521) on the stripping tube (352). After stripping the cable in the stripping tube (352), a new cable can be connected.

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