A low-loss cable distribution network

Abstract

The invention discloses a low-loss cable distribution network, comprising cement poles, distribution transformers are arranged between adjacent cement poles, mounting plates are respectively fixed on both sides of the bottom end of the distribution transformer, a positioning groove is provided on one side of the top end of the mounting plate, a threaded hole is provided on one side of the positioning groove, the mounting plate is connected with a fixing plate by sliding, a fixing block is fixed on one side of the top end of the fixing plate, a positioning pin is arranged inside the fixing block, a baffle is arranged on the outer wall of the positioning pin, and a spring is arranged between the baffle and the fixing block; the invention can connect the mounting plate at the bottom end of the distribution transformer by sliding through the arrangement of the fixing plate, thereby avoiding the distribution transformer from shaking left and right, and can make the positioning pin stuck in the positioning groove when pushing the distribution transformer, so that the screw holes are just aligned with each other, avoiding the inconvenience of aligning the screw holes in the past and increasing the difficulty of installation.

Description

Technical Field

[0001] The invention belongs to the technical field of power networks, and in particular relates to a low-loss cable distribution network. Background Art

[0002] The distribution network is composed of overhead lines, cables, poles, distribution transformers, disconnectors, reactive power compensators and some ancillary facilities. It plays an important role in distributing electric energy in the power grid.

[0003] The existing distribution network still has some shortcomings when in use: the existing distribution network is composed of multiple structures, among which the distribution transformer plays a very important role in the entire distribution network. When the staff installs the distribution transformer, due to its large size, it is not easy to align the screw holes when fixing it, and it needs to be lifted multiple times to adjust the position, which increases the difficulty of installation. Summary of the invention

[0004] The object of the present invention is to provide a low-loss cable distribution network to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-loss cable distribution network, comprising cement poles, distribution transformers are arranged between adjacent cement poles, mounting plates are fixed on both sides of the bottom end of the distribution transformer, a positioning groove is provided on one side of the top of the mounting plate, a threaded hole is provided on one side of the positioning groove, the mounting plate is connected to a fixing plate by sliding, a fixing block is fixed on one side of the top of the fixing plate, a positioning pin is arranged inside the fixing block, a baffle is arranged on the outer wall of the positioning pin, a spring is arranged between the baffle and the fixing block, one end of the positioning pin passes through the fixing plate and is connected to the groove by snapping, a fixing screw is connected at the connection between the fixing plate and the threaded hole, a gasket is arranged between the fixing screw and the fixing plate, and an insulating ring is fixed to the other end of the positioning pin.

[0006] Preferably, a third support frame is fixed to the top end of the cement pole, an insulator is fixed to the bottom end of the third support frame, a cable is arranged on the outer wall of the insulator, the cable consists of an outer sheath, tin foil, insulating filler and a conducting wire, and a titanium-nickel alloy memory wire is arranged inside the outer sheath.

[0007] Preferably, a reinforcing steel wire is arranged inside the insulating filler, and the center line of the reinforcing steel wire coincides with the center line of the insulating filler.

[0008] Preferably, a second support frame is provided at the bottom end of the insulator, and the second support frame is fixed to the outer wall of the cement pole.

[0009] Preferably, an isolating switch is fixed to one end of the second supporting frame, and the isolating switch consists of a static contact and a conductive guillotine.

[0010] Preferably, a first support frame is fixed to the bottom end of the fixed plate, and the first support frame is fixed to the outer wall of the cement pole.

[0011] Preferably, the insulator is fixed to the third support frame by screws, and a fixing threaded hole is provided at the top of the second support frame.

[0012] Preferably, main and low voltage terminal blocks are provided at the top of the distribution transformer, and an oil tank is provided inside the distribution transformer.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: through the setting of the fixing plate, the mounting plate at the bottom end of the distribution transformer can be connected by sliding, thereby preventing the distribution transformer from shaking left and right; through the setting of the positioning groove, the positioning pin can be stuck in the positioning groove when the distribution transformer is pushed, so that the screw holes are just aligned with each other, avoiding the previous inconvenience of aligning the screw holes and increasing the difficulty of installation; through the setting of the spring, elastic force can be provided for the positioning pin to press it on the positioning groove, thereby preventing the positioning pin from shaking; through the setting of the fixing block, the installation and fixation of the positioning pin and the spring are facilitated; through the setting of the baffle, the spring can be The elastic force is transmitted to the positioning pin, and the setting of the insulating ring makes it easy for the operator to pull up the positioning pin, thereby increasing the safety factor and preventing electric shock accidents; the setting of the titanium-nickel alloy memory wire increases the flexibility of the cable, so that the present invention does not cause the wire to be pulled due to excessive pulling force, thereby increasing the loss; the setting of the tin foil prevents the outside temperature from penetrating into the cable, thereby changing the conductivity of the cable and increasing its loss; the setting of the reinforced steel wire increases the strength of the cable to avoid breakage; the setting of the isolating switch prevents the switch from being disconnected under the magnetic force of a large fault. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a schematic diagram of the connection between the fixing plate and the mounting plate of the present invention;

[0016] Figure 3 This is a partial enlarged view of location A of the present invention;

[0017] Figure 4 This is a schematic diagram of the internal structure of the cable of the present invention;

[0018] Figure 5 is a three-dimensional diagram of the second support frame of the present invention;

[0019] Figure 6is a three-dimensional diagram of a fixing plate of the present invention;

[0020] Figure 7 A three-dimensional diagram of the mounting plate of the present invention;

[0021] Figure 8 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0022] In the figure: 1. cement pole; 2. gasket; 3. first support frame; 4. mounting plate; 5. fixing screw; 6. fixing plate; 7. distribution transformer; 8. disconnect switch; 9. second support frame; 10. cable; 11. insulator; 12. third support frame; 13. insulating ring; 14. positioning pin; 15. fixing block; 16. threaded hole; 17. baffle; 18. spring; 19. positioning groove; 20. titanium-nickel alloy memory wire; 21. tin foil; 22. outer sheath; 23. reinforcing steel wire; 24. insulating filler; 25. ceramic paper. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] Example 1

[0025] See also Figures 1 to 7 The present invention provides a technical solution: a low-loss cable distribution network, including a cement pole 1, a distribution transformer 7 is arranged between adjacent cement poles 1, mounting plates 4 are fixed on both sides of the bottom of the distribution transformer 7, a positioning groove 19 is provided on one side of the top of the mounting plate 4, a threaded hole 16 is provided on one side of the positioning groove 19, the mounting plate 4 is connected to a fixing plate 6 by sliding, a fixing block 15 is fixed on one side of the top of the fixing plate 6, the setting of the fixing block 15 facilitates the fixing of the spring 18 and the positioning pin 14, the positioning pin 14 is provided inside the fixing block 15, and the positioning pin The setting of 14 facilitates the positioning of the mounting plate 4. A baffle 17 is provided on the outer wall of the locating pin 14. A spring 18 is provided between the baffle 17 and the fixing block 15. The setting of the spring 18 facilitates the provision of elastic force to the locating pin 14. One end of the locating pin 14 passes through the fixing plate 6 and is connected to the groove by snap-fitting. A fixing screw 5 is connected at the connection between the fixing plate 6 and the threaded hole 16. A gasket 2 is provided between the fixing screw 5 and the fixing plate 6. An insulating ring 13 is fixed to the other end of the locating pin 14. The setting of the insulating ring 13 facilitates the operator to pull up the locating pin 14.

[0026] In order to reduce the loss of the cable distribution network, in the present embodiment, preferably, a third support frame 12 is fixed to the top end of the cement pole 1, an insulator 11 is fixed to the bottom end of the third support frame 12, a cable 10 is arranged on the outer wall of the insulator 11, and the cable 10 is composed of an outer sheath 22, tin foil 21, an insulating filler 24 and a conductor. The tin foil 21 is arranged to prevent the outside air temperature from penetrating into the cable 10, thereby changing the conductivity of the cable 10 and increasing its loss. A titanium-nickel alloy memory wire 20 is arranged inside the outer sheath 22. The titanium-nickel alloy memory wire 20 is arranged to increase the flexibility of the cable 10, so that the present invention will not cause the conductor to be pulled due to excessive tension, thereby increasing the loss.

[0027] In order to increase the strength of the present invention, in this embodiment, preferably, a reinforcing steel wire 23 is arranged inside the insulating filler 24. By setting the reinforcing steel wire 23, the strength of the cable 10 is increased, and the center line of the reinforcing steel wire 23 coincides with the center line of the insulating filler 24.

[0028] In order to facilitate installation and fixation of the disconnector 8 , in this embodiment, preferably, a second support frame 9 is provided at the bottom end of the insulator 11 , and the second support frame 9 is fixed to the outer wall of the cement pole 1 .

[0029] In order to prevent the switch from being disconnected under the magnetic force of a large fault, in this embodiment, preferably, an isolating switch 8 is fixed to one end of the second support frame 9. Through the setting of the isolating switch 8, the switch is prevented from being disconnected under the magnetic force of a large fault. The isolating switch 8 is composed of a static contact and a conductive shear.

[0030] In order to facilitate the installation of the distribution transformer 7 on the cement pole 1 , in this embodiment, preferably, a first support frame 3 is fixed to the bottom end of the fixing plate 6 , and the first support frame 3 is fixed to the outer wall of the cement pole 1 .

[0031] In order to facilitate the fixation of the insulator 11 , in this embodiment, preferably, the insulator 11 and the third support frame 12 are fixed by screws, and a fixing threaded hole 16 is opened at the top of the second support frame 9 .

[0032] In order to facilitate the operation of the distribution transformer 7 , in this embodiment, preferably, a main and low voltage terminal block is provided at the top of the distribution transformer 7 , and an oil tank is provided inside the distribution transformer 7 .

[0033] Example 2

[0034] See also Figure 1 , Figure 2 , Figure 3 , Figure 5 , Figure 6 , Figure 7 and Figure 8The present invention provides a technical solution: a low-loss cable distribution network, including a cement pole 1, a distribution transformer 7 is arranged between adjacent cement poles 1, mounting plates 4 are fixed on both sides of the bottom of the distribution transformer 7, a positioning groove 19 is provided on one side of the top of the mounting plate 4, a threaded hole 16 is provided on one side of the positioning groove 19, the mounting plate 4 is connected to a fixing plate 6 by sliding, a fixing block 15 is fixed on one side of the top of the fixing plate 6, the setting of the fixing block 15 facilitates the fixing of the spring 18 and the positioning pin 14, the positioning pin 14 is provided inside the fixing block 15, and the positioning pin The setting of 14 facilitates the positioning of the mounting plate 4. A baffle 17 is provided on the outer wall of the locating pin 14. A spring 18 is provided between the baffle 17 and the fixing block 15. The setting of the spring 18 facilitates the provision of elastic force to the locating pin 14. One end of the locating pin 14 passes through the fixing plate 6 and is connected to the groove by snap-fitting. A fixing screw 5 is connected at the connection between the fixing plate 6 and the threaded hole 16. A gasket 2 is provided between the fixing screw 5 and the fixing plate 6. An insulating ring 13 is fixed to the other end of the locating pin 14. The setting of the insulating ring 13 facilitates the operator to pull up the locating pin 14.

[0035] In order to reduce the loss of the cable distribution network, in this embodiment, preferably, a third support frame 12 is fixed to the top of the cement pole 1, an insulator 11 is fixed to the bottom of the third support frame 12, and a cable 10 is arranged on the outer wall of the insulator 11. The cable 10 is composed of an outer sheath 22, ceramic paper 25, an insulating filler 24 and a conductor. The setting of the ceramic paper 25 can prevent the outside temperature from penetrating into the cable 10, thereby changing the conductivity of the cable 10 and increasing its loss. A titanium-nickel alloy memory wire 20 is arranged inside the outer sheath 22. The setting of the titanium-nickel alloy memory wire 20 increases the flexibility of the cable 10, so that the present invention will not cause the conductor to be pulled due to excessive tension, thereby increasing the loss.

[0036] In order to increase the strength of the present invention, in this embodiment, preferably, a reinforcing steel wire 23 is arranged inside the insulating filler 24. By setting the reinforcing steel wire 23, the strength of the cable 10 is increased, and the center line of the reinforcing steel wire 23 coincides with the center line of the insulating filler 24.

[0037] In order to facilitate installation and fixation of the disconnector 8 , in this embodiment, preferably, a second support frame 9 is provided at the bottom end of the insulator 11 , and the second support frame 9 is fixed to the outer wall of the cement pole 1 .

[0038] In order to prevent the switch from being disconnected under the magnetic force of a large fault, in this embodiment, preferably, an isolating switch 8 is fixed to one end of the second support frame 9. Through the setting of the isolating switch 8, the switch is prevented from being disconnected under the magnetic force of a large fault. The isolating switch 8 is composed of a static contact and a conductive shear.

[0039] In order to facilitate the installation of the distribution transformer 7 on the cement pole 1 , in this embodiment, preferably, a first support frame 3 is fixed to the bottom end of the fixing plate 6 , and the first support frame 3 is fixed to the outer wall of the cement pole 1 .

[0040] In order to facilitate the fixation of the insulator 11 , in this embodiment, preferably, the insulator 11 and the third support frame 12 are fixed by screws, and a fixing threaded hole 16 is opened at the top of the second support frame 9 .

[0041] In order to facilitate the operation of the distribution transformer 7 , in this embodiment, preferably, a main and low voltage terminal block is provided at the top of the distribution transformer 7 , and an oil tank is provided inside the distribution transformer 7 .

[0042] Working principle and use process of the present invention: When the present invention is in use, the distribution transformer 7 is lifted up by the lifting device, and the operator climbs onto the cement pole 1, straightens the distribution transformer 7, and aligns the mounting plate 4 at the bottom thereof with the groove of the fixing plate 6, thereby pushing it inward. During the pushing process, since it is engaged in the fixing plate 6, there will be no left and right shaking. When it is pushed to a certain distance, the operator pulls up the positioning pin 1 through the insulating ring 13, thereby continuing to push the distribution transformer 7, so that one end of it exceeds the positioning pin 14, loosens the positioning pin 14, and continues to push the distribution transformer 7, so that the positioning pin 14 is engaged and fixed with the positioning groove 19, so that the operator can use the fixing screw 5 to fix the distribution transformer 7. During the use of the present invention, since the titanium-nickel alloy memory wire 20 has good flexibility, the pulling force of the wire is reduced, the conductivity is improved, and the loss is reduced. Under the action of the tin foil 21, the external climate is well isolated from the inside of the cable 10, thereby avoiding the influence of the external climate on the conductivity of the cable 10.

[0043] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-loss cable distribution network, comprising a cement pole (1), characterized in that: A distribution transformer (7) is arranged adjacent to the cement pole (1), and mounting plates (4) are fixed on both sides of the bottom end of the distribution transformer (7), and a positioning groove (19) is provided on one side of the top end of the mounting plate (4), and a threaded hole (16) is provided on one side of the positioning groove (19). The mounting plate (4) is connected to a fixing plate (6) by sliding, and a fixing block (15) is fixed on one side of the top end of the fixing plate (6). A positioning pin (14) is arranged inside the fixing block (15), and a baffle (17) is arranged on the outer wall of the positioning pin (14). A spring (18) is arranged adjacent to the baffle (17) and the fixing block (15). One end of the positioning pin (14) passes through the fixing plate (6) and is connected to the groove by snapping. A fixing screw (5) is connected to the connection between the fixing plate (6) and the threaded hole (16), and a gasket (2) is arranged adjacent to the fixing screw (5) and the fixing plate (6). An insulating ring (13) is fixed to the other end of the positioning pin (14); a third support frame (12) is fixed to the top of the cement pole (1); an insulator (11) is fixed to the bottom of the third support frame (12); a cable (10) is arranged on the outer wall of the insulator (11); the cable (10) is composed of an outer sheath (22), tin foil (21), an insulating filler (24) and a conductor; a titanium-nickel alloy memory wire (20) is arranged inside the outer sheath (22); a reinforcing steel wire (23) is arranged inside the insulating filler (24); the center line of the reinforcing steel wire (23) coincides with the center line of the insulating filler (24); a second support frame (9) is arranged at the bottom of the insulator (11); the second support frame (9) is fixed to the outer wall of the cement pole (1); an isolating switch (8) is fixed to one end of the second support frame (9); the isolating switch (8) is composed of a static contact and a conductive shear.

2. A low-loss cable distribution network according to claim 1, characterized in that: A first support frame (3) is fixed to the bottom end of the fixing plate (6), and the first support frame (3) is fixed to the outer wall of the cement pole (1).

3. A low-loss cable distribution network according to claim 2, characterized in that: The insulator (11) is fixed to the third support frame (12) by means of screws, and a fixing threaded hole (16) is provided at the top of the second support frame (9).

4. A low-loss cable distribution network according to claim 1, characterized in that: A low-voltage terminal block is arranged at the top of the distribution transformer (7), and an oil tank is arranged inside the distribution transformer (7).

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