High-voltage circuit breaker contact monitoring device

Abstract

The utility model discloses a high-voltage circuit breaker contact monitoring device which comprises a supporting frame, the supporting frame is slidably installed on a static contact, the surface of the supporting frame is in threaded connection with a transmission screw, the tail end of the transmission screw is rotationally connected with a monitoring frame, one side of the surface of the monitoring frame is provided with a contraction groove, and a rolling wheel is installed in the contraction groove. One end of the monitoring frame is provided with a pressed inclined plane, the surface of the pressed inclined plane is provided with a pressure sensor, one end of the monitoring frame is fixedly provided with a laser displacement sensor, one side of the inner wall of the supporting frame is fixedly provided with a temperature sensor, and one side of the static contact is provided with a moving contact assembly. The beneficial effects of the utility model are that through the sensors on the support frame and the monitoring frame, various parameters after connection can be monitored when the moving contact assembly and the static contact are to be connected, the connection safety of the breaker contact is improved, and through the rotation adjustment of the transmission screw rod on the support frame, the safety of the breaker contact is improved. And the circuit breaker contacts with different gears can be monitored.

Description

TECHNICAL FIELD

[0001] The utility model relates to power equipment technical field, technical field, concretely, relate to a kind of high voltage circuit breaker contact monitoring device. BACKGROUND

[0002] As the key equipment in power system, high voltage circuit breaker undertakes the important responsibility of turning on, carrying and turning off current under normal or fault condition, and is an indispensable part to ensure the safe and stable operation of power system. However, in the long-term use process, the switch cabinet contact spring of high voltage circuit breaker will experience different degrees of contraction and fatigue due to process limitations and long time in on-off state, resulting in inconsistent contact force between moving and static contacts. This inconsistency can cause changes in current and resistance, leading to contact heating and even burning out the contact. In addition, when the contact is not fully inserted, it will exacerbate the problem, further increasing the probability of arc occurrence, causing damage to the contact and other components.

[0003] Traditional monitoring methods usually rely on a single temperature sensor for fault warning, but temperature abnormalities can be caused by multiple reasons (such as poor contact, arc discharge or environmental factors), making it difficult to accurately locate the root cause of the fault. In addition, existing devices lack real-time monitoring capabilities for key parameters such as contact pressure and insertion depth, making it difficult to detect spring performance degradation or contact assembly abnormalities in the early stages, leading to delayed maintenance or increased risk of misjudgment, seriously threatening the stable operation of the power system.

[0004] To address the problems in the related art, no effective solutions have been proposed so far. UTILITY MODEL CONTENT

[0005] To address the problems in the related art, the utility model proposes a high voltage circuit breaker contact monitoring device to overcome the above technical problems existing in the prior art.

[0006] Therefore, the utility model adopts the following specific technical solutions:

[0007] A high voltage circuit breaker contact monitoring device, comprising a support frame, the support frame is slidably installed on the static contact, the surface of the support frame is threadedly connected with a transmission screw rod, the distal end of the transmission screw rod is rotatably connected with a monitoring frame, the surface of the monitoring frame is provided with a contraction slot on one side, the contraction slot is internally provided with a rolling wheel, one end of the monitoring frame is provided with a pressure receiving inclined surface, the surface of the pressure receiving inclined surface is provided with a pressure sensor, one end of the monitoring frame is fixedly provided with a laser displacement sensor, the inner wall of the support frame is fixedly provided with a temperature sensor on one side, and one side of the static contact is provided with a moving contact assembly.

[0008] Further, in order to realize the connection and disconnection of the high-voltage circuit breaker, the moving contact assembly comprises a moving contact arm provided on the side of the fixed contact, and a contact piece is fixedly connected to the outer surface of the moving contact arm, and a contact spring is mounted on the outer surface of the contact piece.

[0009] Further, in order to realize wireless transmission of the monitoring data, a control groove is opened in the inside of the support frame, a microcontroller is fixedly installed in the inside of the control groove, and a wireless communication module is fixedly installed on one side of the microcontroller.

[0010] Further, in order to realize the power supply to the electrical components in the support frame, a power supply box is fixedly installed on one side of the inside of the control groove, and a power supply battery is fixedly installed in the inside of the power supply box.

[0011] Further, in order to realize the limiting of the monitoring frame when the transmission screw rod rotates, limiting rods are fixedly connected to the surfaces of the monitoring frame, limiting holes are opened on the surfaces of the support frame, and the limiting rods are slidingly installed in the limiting holes.

[0012] Further, in order to facilitate the replacement of the power supply battery in the power supply box, a maintenance cover is rotatably installed on one side of the surface of the support frame.

[0013] Further, in order to realize the screwing adjustment of the transmission screw rod, a screwing head is fixedly installed on the top of the transmission screw rod.

[0014] The beneficial effects of the utility model are as follows:

[0015] 1. The various sensors on the support frame and the detection frame can monitor the key parameters such as the clamping force, temperature and insertion depth of the high-voltage circuit breaker contact in real time, and can timely find the problems caused by insufficient pressure or insufficient insertion depth of the contact. This helps to prevent serious safety hazards such as heating, arc and even fire caused by poor contact, and ensures the safe operation of the power system; and through comprehensive monitoring of multiple connection data between the contacts, the specific reasons for the contact failure can be more accurately analyzed and located, so that targeted maintenance measures can be taken.

[0016] 2. The rotation adjustment of the transmission screw rod on the support frame enables the transmission screw rod to drive the monitoring frame to move on one side of the support frame, so that the support frame can be slidingly installed on high-voltage circuit breaker contacts of different sizes for monitoring, thereby effectively improving the applicability of the monitoring device. DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or in the prior art, the following will briefly introduce the drawings needed in the embodiments. Obviously, the drawings described below are only some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0018] Figure 1 is a surface structure schematic view of a high-voltage circuit breaker contact monitoring device according to an embodiment of the present application;

[0019] Figure 2 is a surface structure schematic view of a moving contact assembly in a high-voltage circuit breaker contact monitoring device according to an embodiment of the present application;

[0020] Figure 3 is an installation structure schematic view of a support frame and a stationary contact in a high-voltage circuit breaker contact monitoring device according to an embodiment of the present application;

[0021] Figure 4 is an installation structure schematic view of a power supply in a high-voltage circuit breaker contact monitoring device according to an embodiment of the present application;

[0022] Figure 5 is an internal structure schematic view of a support frame in a high-voltage circuit breaker contact monitoring device according to an embodiment of the present application;

[0023] Figure 6 is a bottom view of a monitoring frame in a high-voltage circuit breaker contact monitoring device according to an embodiment of the present application.

[0024] In the drawings:

[0025] 1, support frame; 2, stationary contact; 3, transmission screw; 4, monitoring frame; 5, contraction groove; 6, rolling wheel; 7, pressure receiving inclined surface; 8, pressure sensor; 9, laser displacement sensor; 10, temperature sensor; 11, moving contact assembly; 1101, moving contact arm; 1102, contact patch; 1103, contact spring; 12, control groove; 13, microcontroller; 14, wireless communication module; 15, power supply box; 16, power supply battery; 17, limiting rod; 18, limiting hole; 19, maintenance cover. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] According to the embodiment of the utility model, a kind of high-voltage circuit breaker contact monitoring device is provided.

[0028] Embodiment one:

[0029] As Figures 1-6 The utility model discloses a kind of high-voltage circuit breaker contact monitoring device according to the embodiment of the utility model, including circular ring insulating material's support frame 1, support frame 1 is slidably installed on static contact 2, the surface of support frame 1 is screw-threaded with transmission screw rod 3, the quantity of transmission screw rod 3 is three, and it is distributed on support frame 1 around, the end of each transmission screw rod 3 is rotatably connected with monitoring frame 4, the surface one side of monitoring frame 4 is opened with shrinkage groove 5, rolling wheel 6 is installed in the inside of shrinkage groove 5, rolling wheel 6 and static contact 2 surface are rolling contact;Monitoring frame 4 one end is equipped with pressure inclined surface 7, pressure sensor 8 is installed on the surface of pressure inclined surface 7, for monitoring the pressure that static contact 2 is received when high-voltage circuit breaker contact is connected;Monitoring frame 4 one end is fixedly installed with laser displacement sensor 9, for detecting the insertion depth when high-voltage circuit breaker contact is connected;Temperature sensor 10 is fixedly installed on the inner wall one side of support frame 1, for detecting the temperature of high-voltage circuit breaker contact surface;The side of static contact 2 is equipped with moving contact assembly 11, for realizing the mutual connection between the moving contact of high-voltage circuit breaker and static contact 2.

[0030] As Figures 1-6As shown, the moving contact assembly 11 includes a moving contact arm 1101 provided on one side of the static contact 2, and a plurality of contact pieces 1102 are fixedly connected to the outer surface of the moving contact arm 1101, one end of the contact piece 1102 is matched with the pressure receiving inclined surface 7, and the contact springs 1103 are installed on both sides of the outer surface of the contact piece 1102, when the moving contact arm 1101 contacts the static contact 2, the elastic force of the contact spring 1103 enables each contact piece 1102 to limit contact with the surface of the static contact 2; the inside of the support frame 1 is provided with a control groove 12, the inside of the control groove 12 is fixedly provided with a microcontroller 13, one side of the microcontroller 13 is fixedly provided with a wireless communication module 14, the wireless communication module 14 is a 4G / 5G communication module, which is used for controlling each sensor and wirelessly transmitting monitoring data to the receiving end for convenient collection and analysis; the inside of the control groove 12 is fixedly provided with a power box 15 on one side, and the inside of the power box 15 is fixedly provided with a power supply battery 16 for providing power supply for each electrical element; the surface of the monitoring frame 4 is fixedly connected with a limiting rod 17, the surface of the support frame 1 is provided with a limiting hole 18, the limiting rod 17 is slidingly installed in the limiting hole 18, and the limiting rod 17 is used for limiting the rotation of the monitoring frame 4 when the transmission screw 3 is screwed and adjusted on the support frame 1; the surface of the support frame 1 is rotatably provided with a maintenance cover 19, the maintenance cover 19 corresponds to the opening position of the power box 15, and the maintenance cover 19 is used for opening the rear to facilitate replacement of the power supply battery 16; the top of the transmission screw 3 is fixedly provided with a screw head for conveniently screwing and adjusting the transmission screw 3.

[0031] In order to facilitate the understanding of the above technical scheme of the utility model, the working principle or operation mode of the utility model in the actual process will be described in detail.

[0032] In summary, by means of the above technical scheme of the utility model, in actual use, the support frame 1 is sleeved on one end of the surface of the static contact 2, each transmission screw 3 is screwed to make the transmission screw 3 drive the rolling wheel 6 to contact the surface of the static contact 2, the support frame 1 is limited to slide on the surface of the static contact 2, when the moving contact assembly 11 is connected with the static contact 2, the support frame 1 is pushed to slide on the surface of the static contact 2 by the contact piece 1102, after the moving contact assembly 11 of the high-voltage circuit breaker is connected with the static contact 2, the laser displacement sensor 9 detects the distance from the support frame 1 to the end of the static contact 2 to monitor the insertion depth between the two contacts; the pressure of the contact piece 1102 end to the pressure receiving inclined surface 7 is monitored by the pressure sensor, so that the pressure of the contact spring 1103 to the contact piece 1102 is monitored after the moving contact assembly 11 is connected with the static contact 2; the temperature change of the high-voltage circuit breaker contact when connected is monitored by the temperature sensor 10, thereby realizing multi-parameter monitoring of the high-voltage circuit breaker contact after connection.

[0033] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A high voltage circuit breaker contact monitoring device, characterized by, Including support frame (1), the support frame (1) is slidingly installed on static contact (2), the surface of support frame (1) is screw connected with transmission screw rod (3), the end of transmission screw rod (3) is rotatably connected with monitoring frame (4), the surface of monitoring frame (4) is provided with shrinkage groove (5) on one side, the inside of shrinkage groove (5) is installed with rolling wheel (6), one end of monitoring frame (4) is equipped with pressure inclined plane (7), the surface of pressure inclined plane (7) is installed with pressure sensor (8), one end of monitoring frame (4) is fixedly installed with laser displacement sensor (9), the inner wall of support frame (1) is fixedly installed with temperature sensor (10) on one side, one side of static contact (2) is equipped with dynamic contact assembly (11).

2. The high voltage circuit breaker contact monitoring device of claim 1, wherein, The dynamic contact assembly (11) comprises a dynamic contact arm (1101) provided on one side of the static contact (2), a contact piece (1102) is fixedly connected to the outer surface of the dynamic contact arm (1101), and a contact spring (1103) is mounted on both sides of the outer surface of the contact piece (1102).

3. The high voltage circuit breaker contact monitoring device of claim 1, wherein, The inside of the support frame (1) is provided with a control groove (12), and the microcontroller (13) is fixedly installed in the control groove (12).

4. The high voltage circuit breaker contact monitoring device of claim 3, wherein, The inside of the control groove (12) is fixedly installed with a power box (15), and the inside of the power box (15) is fixedly installed with a power supply battery (16).

5. The high voltage circuit breaker contact monitoring device of claim 1, wherein, The surface of the monitoring frame (4) is fixedly connected with a limiting rod (17), and the surface of the support frame (1) is provided with a limiting hole (18).

6. The high voltage circuit breaker contact monitoring device of claim 1, wherein, The surface of the support frame (1) is rotatably installed with an inspection cover (19).

7. The high voltage circuit breaker contact monitoring device of claim 1, wherein, The top of the transmission screw rod (3) is fixedly installed with a screw head (20).

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