Substation incoming line spare power automatic switching device

Abstract

The utility model discloses a substation incoming line spare power automatic switching device, which relates to the technical field of substations and comprises a spare power automatic switching device and a digital signal transmission device, an optical fiber cable is connected between the spare power automatic switching device and the digital signal transmission device, and a metal shielding tube is sleeved on the outer side of the optical fiber cable. The two ends of the metal shielding tube are fixedly sleeved with fixing rings, two symmetrically-arranged mounting plates are fixedly arranged at tube openings of the two ends of the metal shielding tube, rotating rods are rotationally arranged in the two mounting plates, the rod walls of the rotating rods are fixedly sleeved with clamping blocks, and every two adjacent clamping blocks are arranged on the outer side of the optical fiber cable in an extruded mode. According to the spare power automatic switching device, the digital model transmission device, the optical fiber cable, the metal shielding tube, the fixing ring, the mounting plate, the rotating rod, the clamping block and the clamping positioning mechanism provided by the utility model, the metal shielding tube can be arranged at the outer side of the optical fiber cable, the stability of signal transmission by the cable is ensured, and the spare power automatic switching device can be stably used.

Description

Technical Field

[0001] The utility model relates to the technical field of transformer substations, in particular to a transformer substation incoming line standby automatic switching device. Background Art

[0002] The backup power supply device is an automatic device widely used in power systems. Its main function is to automatically switch to the backup power supply when the main power supply fails to ensure the stable operation of the power system. It is an indispensable device in the substation line entry process.

[0003] After searching, the announcement number CN204947713U discloses a substation incoming line standby automatic start-up device, in which the standby power supply automatic start-up device of the substation incoming line standby automatic start-up device is connected to a DOT-100 digital signal transmission device, the DOT-100 digital signal transmission device is connected to an MTC-260 communication interface device through an optical fiber channel, the MTC-260 communication interface device is connected to PCM / SDH through an optical fiber channel, the PCM / SDH is connected to another PCM / SDH through a 2M optical fiber, the other PCM / SDH is connected to the MTC-260 communication interface device through an optical fiber channel, and the MTC-260 communication interface device is connected to the UFV-200C stability control device through an optical fiber channel.

[0004] However, the backup automatic start-up device is connected to the signal transmission device through optical fiber. When the number of light rays is large and entangled, the electromagnetic field in the optical cable may interfere with the power lines or other cables, causing interference or damage to the signal transmission, thereby reducing the stability of the backup automatic start-up device. Utility Model Content

[0005] In view of the above problems existing in the existing transformer substation incoming line standby automatic switching device, the present utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide a transformer substation incoming line standby automatic switching device, which solves the problem that the cable connected to the standby automatic switching device is easily entangled with external cables, causing electromagnetic fields to interfere with the cables, thereby interfering with signal transmission.

[0007] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0008] A transformer substation incoming line automatic switching device, comprising an automatic switching device and a digital signal transmission device, wherein an optical fiber cable is connected between the automatic switching device and the digital signal transmission device, a metal shielding tube is sleeved on the outer side of the optical fiber cable, both ends of the metal shielding tube are fixedly sleeved with fixing rings, and two symmetrically arranged mounting plates are fixedly arranged at the two end openings of the metal shielding tube, a rotating rod is rotatably arranged in the two mounting plates, a clamping block is fixedly sleeved on the rod wall of the rotating rod, and two adjacent clamping blocks are squeezed and arranged on the outer side of the optical fiber cable;

[0009] A clamping and positioning mechanism for driving the clamping blocks to rotate is provided between two adjacent clamping blocks and the fixing ring.

[0010] Preferably, the clamping and positioning mechanism includes a swivel ring, the outer wall of the fixed ring is provided with an annular groove, the swivel ring is rotatably arranged in the annular groove, two symmetrically arranged vertical rods are fixedly arranged on the top of the swivel ring, and a spur gear ring is commonly fixedly arranged on the top of the two vertical rods, and two adjacent swivel rods are fixedly provided with a gear at one end away from each other, and the gear is matched with the spur gear ring.

[0011] Preferably, a positioning rod is slidably inserted into the side of the swivel, a spring is sleeved on the rod wall of the positioning rod, two ends of the spring are respectively fixedly connected to the positioning rod and the swivel, a plurality of positioning grooves symmetrically arranged around the inner wall of the annular groove are provided, and the positioning rod is plugged into the positioning groove.

[0012] Preferably, a pull ring is hingedly provided at the end of the positioning rod.

[0013] Furthermore, the metal shielding tube is a telescopic corrugated metal shielding tube.

[0014] Preferably, the clamp block is a rubber clamp block.

[0015] In the above technical solution, the technical effects and advantages provided by the utility model are:

[0016] 1. The utility model, through the provision of a standby automatic switching device, a digital model transmission device, an optical fiber cable, a metal shielding tube, a fixing ring, a mounting plate, a rotating rod and a clamping block as well as a clamping and positioning mechanism, can arrange the metal shielding tube on the outside of the optical fiber cable to ensure the stability of the cable in signal transmission, so that the standby automatic switching device can be used stably.

[0017] 2. The utility model, through the fixed ring, rotating ring, positioning rod, positioning groove, spring and pull ring, can fix the position of the clamping block after the clamping block rotates to clamp the optical fiber cable, thereby ensuring the stable setting of the metal shielding tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 It is a schematic diagram of the side structure of the metal shielding tube and the clamping block of the utility model;

[0021] Figure 3 For the utility model Figure 2 An enlarged schematic diagram of part A.

[0022] Description of reference numerals:

[0023] 1. Standby automatic device; 2. Digital signal transmission device; 3. Optical fiber cable; 4. Metal shielding tube; 5. Fixing ring; 6. Mounting plate; 7. Rotating rod; 8. Clamping block; 9. Rotating ring; 10. Vertical rod; 11. Straight tooth ring; 12. Gear; 13. Positioning rod; 14. Spring; 15. Positioning groove; 16. Pull ring. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0025] The utility model embodiment discloses a transformer substation incoming line standby automatic switching device.

[0026] Example 1

[0027] The utility model provides Figure 1-3 A transformer substation incoming line automatic start-up device shown includes an automatic start-up device 1 and a digital signal transmission device 2, an optical fiber cable 3 is connected between the automatic start-up device 1 and the digital signal transmission device 2, the outer side of the optical fiber cable 3 is sleeved with a metal shielding tube 4, the metal shielding tube 4 is a telescopic corrugated metal shielding tube, both ends of the metal shielding tube 4 are fixedly sleeved with fixing rings 5, both end openings of the metal shielding tube 4 are fixedly provided with two symmetrically arranged mounting plates 6, a rotating rod 7 is rotatably provided in the two mounting plates 6, the rod wall of the rotating rod 7 is fixedly sleeved with a clamping block 8, the clamping block 8 is a rubber clamping block, and two adjacent clamping blocks 8 are squeezed and arranged on the outer side of the optical fiber cable 3.

[0028] When the standby automatic start-up device 1 is used, the metal shielding tube 4 is set on the outside of the optical fiber cable 3, and then the optical fiber cable 3 is set between the standby automatic start-up device 1 and the digital signal transmission device 2. The metal shielding tube 4 is then stretched to stably match the length of the optical fiber cable 3, and then the two clamping blocks 8 at the pipe mouth of the metal shielding tube 4 are rotated, and the clamping blocks 8 are driven by the rotating rod 7 to approach the optical fiber cable 3. At this time, the metal shielding tube 4 is stably sleeved on the outside of the optical fiber cable 3, which can stably protect the optical fiber cable 3 and avoid the cable from being affected by the magnetic field due to entanglement as much as possible, thereby ensuring the stability of signal transmission and improving the use stability of the standby automatic start-up device 1.

[0029] Example 2

[0030] Embodiment 2 is based on Embodiment 1, and in order to enable two adjacent clamping blocks 8 to stably contact the outer wall of the optical fiber cable 3, the position of the tube opening of the metal shielding tube 4 is determined, such as Figure 2-3 As shown, a clamping and positioning mechanism for driving the clamping blocks 8 to rotate is provided between two adjacent clamping blocks 8 and the fixed ring 5, and the clamping and positioning mechanism includes a swivel 9. An annular groove is provided on the outer wall of the fixed ring 5, and the swivel 9 is rotatably arranged in the annular groove. Two symmetrically arranged vertical rods 10 are fixedly arranged on the top of the swivel 9, and a spur gear ring 11 is fixedly arranged on the top of the two vertical rods 10. A gear 12 is fixedly sleeved on one end of two adjacent rotating rods 7 away from each other, and the gear 12 is arranged in coordination with the spur gear ring 11.

[0031] When the metal shielding tube 4 is arranged on the outside of the optical fiber cable 3, the swivel ring 9 can be driven to rotate in the annular groove, and the spur gear ring 11 can be driven to rotate under the connection of the two vertical rods 10. Through the cooperation of the spur gear ring 11 and the two gears 12, the rotating rod 7 can drive the clamping block 8 to rotate and stably clamp the optical fiber cable 3, thereby ensuring the setting position of the metal shielding tube 4 and improving the stability of the use of the metal shielding tube 4.

[0032] Example 3

[0033] Embodiment 3 is based on Embodiment 2 in order to fix the position of the spur gear ring 11 before and after the spur gear ring 11 rotates, such as Figure 3 As shown, a positioning rod 13 is slidably provided on the side of the swivel 9, and a spring 14 is sleeved on the rod wall of the positioning rod 13. The two ends of the spring 14 are fixedly connected to the positioning rod 13 and the swivel 9 respectively. The inner wall of the annular groove is provided with a plurality of positioning grooves 15 which are symmetrically arranged around. The positioning rod 13 is plugged into the positioning groove 15, and a pull ring 16 is hingedly provided at the end of the positioning rod 13.

[0034] When the spur gear ring 11 is rotated, the pull ring 16 can be pulled so that the pull ring 16 pulls the positioning rod 13 out of the positioning groove 15, causing the spring 14 to be stretched. The swivel 9 can then be rotated to drive the spur gear ring 11 to rotate. When the clamping position of the clamping block 8 is determined, the pull ring 16 is released, and the positioning rod 13 rebounds under the elastic force of the spring 14 and continues to be inserted into the positioning groove 15, thereby determining the positions of the swivel 9 and the spur gear ring 11 and ensuring the stability of the clamping block 8.

[0035] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A transformer substation incoming line automatic switching device, comprising a automatic switching device (1) and a digital signal transmission device (2), characterized in that: An optical fiber cable (3) is connected between the standby automatic switching device (1) and the digital signal transmission device (2), a metal shielding tube (4) is sleeved on the outer side of the optical fiber cable (3), both ends of the metal shielding tube (4) are fixedly sleeved with fixing rings (5), and both ends of the metal shielding tube (4) are fixedly sleeved with two symmetrically arranged mounting plates (6), and rotating rods (7) are rotatably arranged in the two mounting plates (6), and the rod wall of the rotating rod (7) is fixedly sleeved with a clamping block (8), and two adjacent clamping blocks (8) are squeezed and arranged on the outer side of the optical fiber cable (3); A clamping and positioning mechanism for driving the clamping blocks (8) to rotate is provided between two adjacent clamping blocks (8) and the fixing ring (5).

2. The transformer substation incoming line standby automatic switching device according to claim 1, characterized in that: The clamping and positioning mechanism comprises a rotating ring (9), an annular groove is formed on the outer wall of the fixed ring (5), the rotating ring (9) is rotatably arranged in the annular groove, two symmetrically arranged vertical rods (10) are fixedly arranged on the top of the rotating ring (9), a spur gear ring (11) is fixedly arranged on the top of the two vertical rods (10), and a gear (12) is fixedly sleeved on one end of two adjacent rotating rods (7) away from each other, and the gear (12) is arranged in cooperation with the spur gear ring (11).

3. The transformer substation incoming line standby automatic switching device according to claim 2, characterized in that: A positioning rod (13) is slidably provided on the side of the rotating ring (9), a spring (14) is sleeved on the rod wall of the positioning rod (13), two ends of the spring (14) are respectively fixedly connected to the positioning rod (13) and the rotating ring (9), a plurality of positioning grooves (15) are arranged in a symmetrical manner around the inner wall of the annular groove, and the positioning rod (13) is plugged into and matched with the positioning grooves (15).

4. The transformer substation incoming line standby automatic switching device according to claim 3, characterized in that: The end of the positioning rod (13) is hingedly provided with a pull ring (16).

5. The transformer substation incoming line standby automatic switching device according to claim 1, characterized in that: The metal shielding tube (4) is a telescopic corrugated metal shielding tube.

6. The transformer substation incoming line standby automatic switching device according to claim 1, characterized in that: The clamping block (8) is a rubber clamping block.

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