GIS disconnecting switch contact temperature monitoring device

Abstract

The utility model provides a GIS disconnecting switch contact temperature monitoring device. The GIS disconnecting switch contact temperature monitoring device comprises a switch body, a movable part, a gear transmission system and an infrared temperature measurement sensor. A central control connecting piece and a switch conductor are arranged in the switch body, the movable piece is connected with the central control connecting piece through a movable groove, and a fixed movable contact conductor is electrically connected with the switch conductor. The gear transmission system drives the movable part to move. The infrared temperature measurement sensor is embedded in the switch conductor and monitors the temperature of the contact in real time. An iron core is perpendicular to a switch conductor magnetic field, alternating magnetic flux is generated when load current passes through, and voltage is induced. When the system is short-circuited, the current-limiting resistor and the inductor prevent the circuit from being damaged. And the embedded part of the infrared temperature measurement sensor is sealed and protected, so that gas leakage is avoided. The device is provided with a pressure discharging hole, internal air pressure balance is conveniently adjusted, safety is guaranteed, and maintenance and overhaul are convenient.

Description

Technical Field

[0001] The present application relates to the field of GIS isolating switches, and in particular to a contact temperature monitoring device for a GIS isolating switch. Background Art

[0002] In the GIS conductor, when the highest temperature is 378K, the wavelength corresponding to the maximum spectral emittance of the conductor is 7.66μm. According to Kirchhoff's law, the ratio of the integrated radiant emittance of any object to its absorptivity at the same temperature is equal to the integrated radiant emittance of a black body. Therefore, in GIS, the emissivity and absorptivity of all measured objects are equal. The absorption and emission of infrared rays by the propagation medium will affect the value and accuracy of the temperature measurement. Since the emissivity of the object has a great influence on the temperature measurement accuracy of the total radiation and brightness temperature measurement methods, in order to reduce this influence, modern thermometers mainly use dual-wavelength temperature measurement methods, which use colorimetric temperature measurement to determine the temperature of the object by measuring the ratio of the radiation power of given wavelengths λ1 and λ2.

[0003] The GIS disconnector contact temperature monitoring device disclosed in the Chinese utility model patent application disclosure CN219641118U uses an insulating sleeve to avoid direct contact between the fixing and the disconnector, and uses a sealing plate to protect the inner probe and elastic member to ensure accuracy during temperature detection. When using the probe for temperature measurement, the sealing block prevents heat loss to the greatest extent, thereby avoiding errors in measuring temperature and making the measured value more accurate. The temperature of the disconnector contact can be displayed in real time through the thermometer. The positioning plates at both ends facilitate the installation and positioning of the disconnector, and the sealing plate not only positions the probe, but also has positioning blocks and blocking blocks to support and position the sealing plate to prevent the sealing plate from offset, so that the probe can move inside the isolation cavity.

[0004] However, the device also faces some technical challenges, such as how to embed the infrared temperature sensor, how to prevent the infrared temperature probe from being damaged by the negative pressure or high-pressure SF6 gas inside the GIS air chamber, and how to ensure the sealing of the GIS equipment after the infrared temperature sensor is embedded. Utility Model Content

[0005] The purpose of the present application is to overcome the above-mentioned prior art and provide a GIS disconnector contact temperature monitoring device.

[0006] The present application provides a GIS isolating switch contact temperature monitoring device, comprising: a switch body, a movable part, a gear transmission system and an infrared temperature sensor;

[0007] The switch body is provided with a central control connector and a switch conductor;

[0008] The movable part is connected to the central control connector through a movable slot and moves when the switch is operated. A moving contact conductor is fixed on the top of the movable part and forms an electrical connection with the switch conductor.

[0009] The gear transmission system drives the movement of the movable part through the meshing transmission of gears;

[0010] The infrared temperature sensor is embedded in the embedded inner groove inside the switch conductor, and the iron core of the infrared temperature sensor is perpendicular to the magnetic field direction of the switch conductor, and is used to monitor the temperature of the contact in real time.

[0011] Optionally, it also includes:

[0012] The shock-absorbing and buffering inner cushion layer arranged on the inner surface of the switch body improves the strength of the overall structure of the switch and reduces the contact force with external objects.

[0013] Optionally, it also includes:

[0014] The pressure relief hole arranged on one side of the switch body is used to avoid negative pressure inside the GIS air chamber and effectively prevent internal components from being damaged by high-pressure gas.

[0015] Optionally, the interior of the pressure relief hole includes:

[0016] A second sealing plugging piece and a second sealing cover are provided to control the air pressure balance of the inner space.

[0017] Optionally, the gear transmission system comprises: a driving gear, a first driven gear, a second driven gear and a transmission shaft;

[0018] The driving gear is connected to an external power source (such as a motor);

[0019] The first driven gear is meshed with the driving gear and is meshed with the second driven gear through the transmission shaft. When the driving gear rotates, the first driven gear rotates with it and transmits power to the second driven gear.

[0020] The second driven gear is connected to the rack on the movable member. When the first driven gear rotates, the second driven gear drives the movable member to move linearly through the rack.

[0021] The beneficial effects of this application are:

[0022] The present application provides a GIS isolating switch contact temperature monitoring device, including: a switch body, a movable part, a gear transmission system and an infrared temperature sensor; a central control connector and a switch conductor are arranged inside the switch body; the movable part is connected to the central control connector through a movable groove, and moves when the switch is operated, and a moving contact conductor is fixed on the top of the movable part, which forms an electrical connection with the switch conductor; the gear transmission system drives the movement of the movable part through the meshing transmission of the gears; the infrared temperature sensor is embedded in the embedded inner groove inside the switch conductor, and the iron core of the infrared temperature sensor is perpendicular to the magnetic field direction of the switch conductor, which is used to monitor the temperature of the contact in real time. The present application arranges the iron core of the infrared temperature sensor perpendicular to the magnetic field direction of the switch conductor, and generates alternating magnetic flux and induces voltage when the load current passes through. When the system is short-circuited, the current limiting resistor and inductor play a protective role to prevent circuit damage, thereby extending the service life of the infrared temperature sensor and the switch body.

[0023] At the same time, the infrared temperature sensor is embedded in the inner groove and is encrypted and protected by a first sealing plug and a first sealing cover to ensure that the embedded part does not cause gas leakage and to ensure the sealing performance of the overall device.

[0024] At the same time, the device is provided with a pressure relief hole, and the internal air pressure balance can be adjusted through the second sealing plug and the second sealing cover. This design not only ensures the safety of the switch body, but also facilitates maintenance and overhaul work. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the GIS disconnector contact temperature monitoring device in this application.

[0026] Figure 2 It is the first partial enlarged schematic diagram of the GIS disconnector contact temperature monitoring device in this application.

[0027] Figure 3 It is the second partial enlarged schematic diagram of the GIS disconnector contact temperature monitoring device in this application.

[0028] Figure 4 It is the third partial enlarged schematic diagram of the GIS disconnector contact temperature monitoring device in this application.

[0029] Figure 5 It is a schematic diagram of the movable part in the present application being meshed with the second driven gear through a rack. DETAILED DESCRIPTION

[0030] The present application is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present application and implement it.

[0031] The following contents are all examples of specific implementation processes provided for describing in detail the technical solutions to be protected by this application. However, this application may also be implemented in other ways different from the descriptions herein. Persons skilled in the art may, under the guidance of the concepts of this application, adopt different technical means to implement this application. Therefore, this application is not limited to the specific embodiments below.

[0032] See also Figure 1-5 , shows an embodiment provided by the present application: a GIS isolating switch contact temperature monitoring device. The device mainly comprises the following parts: a switch body 1, a movable part 3, a gear transmission system and an infrared temperature sensor.

[0033] The switch body 1 is a main component of the device, and a central control connector 2 and a switch conductor 13 are connected to the middle of the switch body 1 .

[0034] An embedded inner groove 14 is designed inside the switch conductor 13 , and an infrared temperature sensor 15 is arranged inside the embedded inner groove 14 .

[0035] When the load current passes through the switch conductor 13, a magnetic field concentric with the switch conductor 13 will be generated. This magnetic field interacts with the iron core of the infrared temperature sensor 15, and the arrangement direction of the iron core is perpendicular to the direction of the magnetic field of the switch conductor 13, so that the magnetic lines of force can pass through the iron core corresponding to the position of the switch conductor 13 and the infrared temperature sensor 15, inducing alternating magnetic flux in the iron core, and then generating voltage in the entire circuit. Especially in the case of a short circuit in the system, the magnetic field will increase suddenly, causing the current in the circuit to increase instantly. At this time, the current limiting resistor and the current limiting inductor play a key role. They can ensure that the loop current will not change suddenly, thereby avoiding damage to the circuit.

[0036] The central control connector 2 is arranged perpendicularly to the switch conductor 13 .

[0037] A movable groove 201 is designed inside the top of the central control connecting member 2, and a movable member 3 is movably arranged inside the movable groove 201.

[0038] A moving contact conductor 4 is fixed to the top of the movable member 3 , and the moving contact conductor 4 corresponds to the bottom inner portion of the switch conductor 13 .

[0039] A rack 11 is fixed to the front surface of the movable member 3 , and a side portion of the rack 11 is meshedly connected with a second driven gear 12 .

[0040] A connection hole 9 is internally connected to one side of the switch body 1 , and the connection hole 9 allows the outer turning arm 8 to be movably arranged.

[0041] In order to improve the overall structural strength of the switch body 1 and to reduce shock and buffer the contact force with foreign objects, a shock-absorbing and buffering inner cushion layer 10 is connected to the inner surface of the switch body 1 .

[0042] In addition, in order to avoid the negative pressure state inside the GIS air chamber caused by vacuuming and to prevent the internal components of the switch body 1 from being damaged, the other side of the switch body 1 is symmetrically connected with pressure relief holes 18. The pressure relief holes 18 are provided with second sealing plugs 20, and a second sealing cover 19 is fixed to one side of the second sealing plug 20. Such a design ensures that the pressure relief holes 18 can be sealed and easy to disassemble, thereby facilitating the control of the air pressure balance of the internal space.

[0043] The second driven gear 12 in the device is internally connected with a transmission shaft 5, and one end of the transmission shaft 5 is fixed with a first driven gear 6. The top of the first driven gear 6 is meshed with a driving gear 7, and the driving gear 7 is internally connected with an outer arm 8.

[0044] In order to ensure that the gas in the embedded part does not leak, a first sealing plug 17 is provided inside one side of the embedded inner groove 14. When the infrared temperature sensor 15 is placed in the embedded inner groove 14, the first sealing plug 17 will be arranged correspondingly thereto, which can improve the sealing of the space. A first sealing cover 16 is fixed to the side of the first sealing plug 17, and this design facilitates the inspection and replacement of the infrared temperature sensor 15.

[0045] When the GIS disconnector contact temperature monitoring device is in use, it can monitor the temperature state of the contact in real time through the infrared temperature sensor 15. At the same time, the characteristics of the magnetic field and current, as well as a series of mechanical and physical structure designs, ensure the efficient and stable operation of the device.

Claims

1. A GIS disconnector contact temperature monitoring device, characterized in that: include: Switch body, moving parts, gear transmission system and infrared temperature sensor; The switch body is provided with a central control connector and a switch conductor; The movable part is connected to the central control connector through a movable slot and moves when the switch is operated. A moving contact conductor is fixed on the top of the movable part and forms an electrical connection with the switch conductor. The gear transmission system drives the movement of the movable part through the meshing transmission of gears; The infrared temperature sensor is embedded in the embedded inner groove inside the switch conductor, and the iron core of the infrared temperature sensor is perpendicular to the magnetic field direction of the switch conductor, and is used to monitor the temperature of the contact in real time.

2. A GIS isolating switch contact temperature monitoring device according to claim 1, characterized in that: Also includes: The shock-absorbing and buffering inner cushion layer arranged on the inner surface of the switch body improves the strength of the overall structure of the switch and reduces the contact force with external objects.

3. The GIS disconnector contact temperature monitoring device according to claim 1, characterized in that: Also includes: The pressure relief hole arranged on one side of the switch body is used to avoid negative pressure inside the GIS air chamber and effectively prevent internal components from being damaged by high-pressure gas.

4. A GIS isolating switch contact temperature monitoring device according to claim 3, characterized in that: The interior of the pressure relief hole includes: A second sealing plugging piece and a second sealing cover are provided to control the air pressure balance of the inner space.

5. The GIS disconnector contact temperature monitoring device according to claim 1, characterized in that: The gear transmission system comprises: a driving gear, a first driven gear, a second driven gear and a transmission shaft; The driving gear is connected to an external power source; The first driven gear is meshed with the driving gear and is meshed with the second driven gear through the transmission shaft. When the driving gear rotates, the first driven gear rotates with it and transmits power to the second driven gear. The second driven gear is connected to the rack on the movable member. When the first driven gear rotates, the second driven gear drives the movable member to move linearly through the rack.

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