Relay protection device of high-voltage power supply system

Abstract

The utility model discloses a relay protection device of a high-voltage power supply system, which comprises a protection device shell used for installing a relay protection element, the protection device shell is provided with a wire hole corresponding to the wiring position of the relay protection element, a cable penetrates into the wire hole for connection, and a locking mechanism used for fixing the cable is arranged in the wire hole. The locking mechanism comprises a radial telescopic part which sleeves the periphery of the cable, and after the radial telescopic part is installed in the wire hole, acting force is applied to the radial telescopic part through the wire hole to change the radial size, so that the cable connected with the relay protection element is locked and fixed. According to the utility model, auxiliary fixation of cables with different diameter specifications can be realized through the radial telescopic piece arranged in the wire hole, so that the reliability of connection is fully ensured, the operation information of equipment can be timely acquired, and the operation safety of high-voltage electric equipment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to a relay protection device technical field, concretely relates to a relay protection device of high voltage power supply system. BACKGROUND

[0002] In the operation process of the airport, sufficient power supply needs to be maintained, and corresponding relay protection facilities need to be used for the power utilization facilities to ensure the power utilization safety, especially for the high-voltage power utilization equipment, once the operation is abnormal, it may cause great property loss and safety hazard, therefore, the connection reliability between the equipment and the corresponding relay protection equipment is particularly important to ensure that the operation of the high-voltage power utilization equipment can be detected and protected in time, and the existing wiring mode is to simply connect the cable and the connector of the relay protection device, this kind of connection fixing mode will cause the connection to be loose due to the operation environment and vibration after a period of operation, and the connection reliability cannot be continuously guaranteed, thereby causing the risk that the operation condition of the high-voltage power utilization equipment cannot be monitored, and being not conducive to the safety management of the airport. UTILITY MODEL CONTENTS

[0003] Technical purpose: in view of the deficiencies existing in the connection between the existing cable and the relay protection equipment, the utility model discloses a relay protection device of high voltage power supply system.

[0004] Technical scheme: in order to realize the above technical purpose, the utility model adopts the following technical scheme:

[0005] A relay protection device of high voltage power supply system, including the protection device casing for installing the relay protection element, the protection device casing is opened in the position corresponding to the relay protection element wiring position for the cable to enter and connect the wire hole, the locking mechanism for fixing the cable is arranged in the wire hole, the locking mechanism includes the radial telescopic piece sleeved on the outer circumference of the cable, after the radial telescopic piece is installed in the wire hole, the radial telescopic piece is locked and fixed with the cable connected with the relay protection element by the action force of the wire hole to the radial dimension change.

[0006] Preferably, the radial telescopic piece of the utility model includes the locking part of conical design and the connecting part of sliding fit with the wire hole, the connecting part is arranged in the wire hole along the axial direction of the wire hole, one end of the wire hole close to the locking part adopts the wedge structure matched with the conical structure of the locking part, the axial movement distance of the radial telescopic piece in the wire hole is controlled, the wedge structure is used to exert the action force to the locking part, and the fixing and release of the cable by the locking part are realized.

[0007] Preferably, the axial compression mechanism of the utility model includes spring and compression block, the compression block and the wire hole are connected through thread cooperation, the spring two ends respectively abut in the end of the connecting part and the compression block, and the axial force is applied to the compression block.

[0008] Preferably, the axial compression mechanism of the utility model includes spring and compression block, the compression block and the wire hole are connected through thread cooperation, the spring two ends respectively abut in the end of the connecting part and the compression block, and the axial force is applied to the compression block.

[0009] Preferably, the wall surface of the locking part is provided with a plurality of separation grooves along the axial direction, and the deformation gap of the locking part is formed by the separation grooves, so that the locking part is correspondingly contracted radially when the acting force of the wire hole changes.

[0010] Preferably, the protection device shell of the utility model is provided with an ear plate for mounting and fixing the whole device, and a waist-shaped hole is formed in the ear plate for passing through a bolt.

[0011] Beneficial effects: the relay protection device of the high-voltage power supply system has the following beneficial effects:

[0012] 1、The radial expansion and contraction member arranged in the wire hole can realize the auxiliary fixing of cables with different diameters, thereby fully guaranteeing the reliability of the connection, and the device operation information can be obtained in time, thereby guaranteeing the operation safety of the high-voltage electrical equipment.

[0013] 2、The sliding groove for guiding is arranged in the wire hole, and cooperates with the guide rib on the connecting part, so that the cable can be prevented from being twisted after being fixed, and the reliability of the connection is further improved.

[0014] 3、The spring of the axial compression mechanism is used to press the connecting part in the wire hole, and the spring is arranged, so that the entire assembly process can be compatible with the size deviation, and the loosening caused by vibration and the like is avoided, thereby continuously guaranteeing the stability of the cable connection. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below.

[0016] Figure 1 It is the overall structure diagram of the protection device of the utility model;

[0017] Figure 2 It is the structure diagram of the radial expansion and contraction member of the utility model;

[0018] Figure 3The line hole structure diagram of the utility model;

[0019] Figure 4 The radial telescopic part and line hole cooperation schematic diagram of the utility model;

[0020] Among them, 1-protective device housing, 2-cable, 3-line hole, 4-locking part, 5-connection part, 6-wedge structure, 7-slotted, 8-guide rib, 9-spring, 10-pressing block, 11-ear plate, 12-waist-shaped hole, 13-separation groove. DETAILED DESCRIPTION

[0021] Reference will now be made in detail to embodiments of the present disclosure, one or more examples of which are set forth herein below. Each embodiment and example is provided by way of explanation of the present disclosure, not limitation. Contrarily, the following description provides a convenient illustration for implementing exemplary embodiments of the present disclosure. In fact, those skilled in the art will clearly understand that various modifications and variations can be made in the teachings of the present disclosure without departing from the scope or spirit of the present disclosure.

[0022] As Figures 1-4 shown, the utility model discloses a kind of relay protection devices of high-voltage power supply system, including the protective device housing 1 for installing relay protection element, protective device housing 1 is provided for the ear plate 11 of being used to install and fix the whole device, the waist-shaped hole 12 for threading bolt is opened on the ear plate 11;The line hole 3 for cable 2 to be connected is opened in protective device housing 1 in corresponding with the wiring position of relay protection element, and locking mechanism for being used to fixed cable is arranged in line hole 3, the locking mechanism includes the radial telescopic part of being sleeved on the outer periphery of cable, after radial telescopic part is loaded into line hole, the line hole 3 is applied to radial telescopic part exertion force and changes radial size to lock and fix cable 2 connected with relay protection element.

[0023] As Figure 2 and Figure 3As shown, the radial telescopic component of this utility model includes a tapered locking part 4 and a connecting part 5 that slides with the wire hole 3. The connecting part 5 is slidably disposed in the wire hole 3 along the axial direction of the wire hole 3. The end of the wire hole 3 near the locking part 4 adopts a wedge-shaped structure 6 that cooperates with the tapered structure of the locking part 4. The slope of the locking part 4 is slightly less than the slope of the wedge-shaped structure 6. By controlling the axial movement distance of the radial telescopic component in the wire hole 3, the wedge-shaped structure 6 applies a force to the locking part 4, thereby fixing and releasing the cable 2. To facilitate the radial expansion and contraction of the locking part under force, in the embodiment of this utility model, several partition grooves 13 are opened on the wall surface of the locking part 4 along the axial direction. The partition grooves 13 form deformation gaps in the locking part 4, so that the locking part 4 contracts radially when the force applied by the wire hole 3 changes. Those skilled in the art can also replace the structure of this utility model with other radial telescopic structures with the same function without departing from the design concept of this utility model, but they are still within the protection scope of this utility model.

[0024] In addition to clamping and fixing the cable, the inner wall of the wire hole 3 of this utility model is provided with a groove 7 along the axial direction to guide the sliding of the connecting part 5. The connecting part 5 is provided with a guide rib 8 that cooperates with the groove 7. Through the cooperation of the guide rib 8 and the groove 7, the radial expansion member will not be twisted after the cable is clamped, ensuring the stability of the entire assembly process and avoiding the impact of cable twisting on the connection stability in the later stage. The wire hole 3 is detachably provided with an axial clamping mechanism at the end of the connecting part to apply axial force to the radial expansion member and lock the cable.

[0025] like Figure 4 As shown, in a specific embodiment, the axial clamping mechanism of this utility model includes a spring 9 and a clamping block 10. The clamping block 10 is connected to the wire hole 3 by a threaded connection. The cable passes concentrically through the clamping block 10 and the spring 9. The two ends of the spring 9 abut against the connecting part 5 and the end of the clamping block 10, respectively, and apply an axial force to the clamping block 10. The spring 9 can continuously maintain the clamping and fixing of the cable by the locking part 4. Even when the cable is deformed due to aging or thermal expansion and contraction, the locking radial dimension of the locking part 4 can be changed with the cable by the spring 9, so as to achieve stable clamping and fixing of the cable under dynamic conditions.

[0026] When using the relay protection device for the high-voltage power supply system provided by this utility model, the signal transmission cable needs to be connected to the corresponding wire hole on the protection device. The cable 2 passes through the wire hole 3, and the locking part 4 and the connecting part 5, which are sleeved on the cable 2, enter synchronously under the guidance of the sliding groove 7. By rotating the clamping block 10, the spring 9 is driven to apply a pushing force along with the connecting part 5, so that the conical structure of the locking part 4 approaches the wedge-shaped structure of the wire hole 3. Since the wedge-shaped structure has an inclined surface that cooperates with the locking part 4, the locking part 4 can be radially contracted when it moves, clamping and fixing the inserted cable, thereby completing the connection of the cable on the relay protection device. The device is fixed in place and transmits operating parameters of high-voltage electrical equipment, such as voltage, current, and impedance, to the relay protection device via cables. The relay protection device then executes corresponding control operations through its built-in control logic, such as cutting off the power supply or issuing an alarm signal. The parts of the relay protection device involved in detecting, controlling, and executing high-voltage power usage can be directly implemented using existing high-voltage relay protection devices. The corresponding functional components can be added or removed according to specific needs. Even with the wire hole and radial telescopic component structure of this utility model, the device does not fall outside the protection scope of this utility model due to the different functional components it incorporates.

Claims

1. A relay protection device for a high-voltage power supply system, characterized in that, The device includes a protective device housing (1) for installing a relay protection element. The protective device housing (1) has a wire hole (3) corresponding to the wiring position of the relay protection element for the cable (2) to pass through and connect. A locking mechanism for fixing the cable is provided in the wire hole (3). The locking mechanism includes a radial telescopic member sleeved on the outer periphery of the cable. After the radial telescopic member is inserted into the wire hole, the radial dimension is changed by applying a force to the radial telescopic member through the wire hole (3) to lock and fix the cable (2) connected to the relay protection element.

2. The relay protection device for a high-voltage power supply system according to claim 1, characterized in that, The radial telescopic component includes a tapered locking part (4) and a connecting part (5) that slides with the wire hole (3). The connecting part (5) is slidably disposed in the wire hole (3) along the axial direction of the wire hole (3). The end of the wire hole (3) near the locking part (4) adopts a wedge structure (6) that matches the tapered structure of the locking part (4). By controlling the axial movement distance of the radial telescopic component in the wire hole (3), the wedge structure (6) applies a force to the locking part (4), thereby realizing the fixing and release of the cable (2) by the locking part.

3. The relay protection device for a high-voltage power supply system according to claim 2, characterized in that, The inner wall of the wire hole (3) is provided with a sliding groove (7) along the axial direction to guide the sliding of the connecting part (5). The connecting part (5) is provided with a guide rib (8) that cooperates with the sliding groove (7). The wire hole (3) is detachably provided with an axial clamping mechanism at the end of the connecting part to apply axial force to the radial telescopic member and lock the cable.

4. A relay protection device for a high-voltage power supply system according to claim 3, characterized in that, The axial clamping mechanism includes a spring (9) and a clamping block (10). The clamping block (10) is connected to the wire hole (3) by a threaded connection. The two ends of the spring (9) abut against the connection part (5) and the end of the clamping block (10) respectively, and apply an axial force to the clamping block (10).

5. A relay protection device for a high-voltage power supply system according to claim 2, characterized in that, The wall surface of the locking part (4) is provided with several partition grooves (13) along the axial direction. The partition grooves (13) form a deformation gap of the locking part (4), so that the locking part (4) will shrink radially when the force of the wire hole (3) changes.

6. A relay protection device for a high-voltage power supply system according to claim 1, characterized in that, The protective device housing (1) is provided with a lug plate (11) for installing and fixing the entire device, and the lug plate (11) has a waist-shaped hole (12) for passing through bolts.

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