Detachable infrared temperature measurement device for GIS

Abstract

This application relates to the field of infrared temperature measurement technology and provides a detachable infrared temperature measurement device for GIS (Gas Insulation System). The device includes a tank flange, an observation window flange, a sensor mounting flange, an infrared glass window, an infrared temperature sensor, and a rainproof and dustproof cover. The observation window flange is fixed to the tank flange and is equipped with a first sealing ring. The observation window flange has a glass window mounting groove, and the infrared glass window is placed in the glass window mounting groove. A second sealing ring is provided between the infrared glass window and the tank flange, and a third sealing ring is provided between the infrared glass window and the glass window mounting groove. The sensor mounting flange is fixed to the observation window flange. The infrared temperature sensor is fixed to the sensor mounting flange. The rainproof and dustproof cover is fixed to the observation window flange and is equipped with a fourth sealing ring. This application allows for flexible disassembly and assembly, with independent installation of components and sealing rings between components. This enables the infrared temperature sensor to be maintained while the GIS tank is operating normally, and the rainproof and dustproof cover effectively isolates it from rain and dust.

Description

Technical Field

[0001] This application belongs to the field of infrared temperature measurement technology, and in particular relates to a detachable infrared temperature measurement device for GIS. Background Technology

[0002] Gas-insulated metal-enclosed switchgear (GIS) has advantages such as compact structure, small footprint, and low maintenance, and has been increasingly used in high-voltage fields of power plants and substations in recent years. GIS adopts a fully enclosed structure design, filled with high-pressure insulating gas. Therefore, in the event of a fault, repair costs are high, the repair cycle is long, and it affects the normal operation of transmission lines. When the current carrying capacity of the GIS conductor is too high or the connection points have poor contact, it can lead to excessive conductor temperature rise, thereby affecting the normal operation of the GIS equipment and even causing discharge phenomena.

[0003] To prevent excessive temperature rise in GIS (Gas Insulated Switchgear), real-time temperature monitoring of the GIS conductors effectively ensures normal equipment operation and reduces the workload of maintenance personnel. Due to the high gas pressure and voltage level inside GIS, contact temperature measurement methods cannot be used to measure the temperature of the internal conductors. Therefore, infrared thermometers are mostly installed outside the GIS tank. Currently, infrared thermometers used in GIS suffer from low safety, significant susceptibility to environmental factors, and potential interference with the internal electric field structure of the GIS during long-term use and replacement. Summary of the Invention

[0004] This application provides a detachable infrared temperature measurement device for GIS, which can solve the problems of low safety, great susceptibility to environmental factors, and easy impact on the internal electric field of GIS in infrared temperature measurement devices used in GIS.

[0005] Based on this, the present invention adopts the following technical solution:

[0006] This utility model provides a detachable infrared temperature measurement device for GIS, including a tank flange, an observation window flange, a sensor mounting flange, an infrared glass window, an infrared temperature sensor, and a rainproof and dustproof cover;

[0007] The observation window flange and the tank flange are fixedly connected by bolts and nuts, and a first sealing ring is provided between the observation window flange and the tank flange;

[0008] The bottom of the observation window flange is provided with a glass window mounting groove, the infrared glass window is placed in the glass window mounting groove, and the infrared glass window is in contact with the tank flange;

[0009] A second sealing ring is provided between the infrared glass window and the tank flange, and a third sealing ring is provided between the infrared glass window and the glass window mounting groove;

[0010] The sensor mounting flange and the observation window flange are fixedly connected by bolts and nuts;

[0011] The sensor mounting flange has a threaded hole, and the detection head of the infrared temperature sensor has a first external thread. The infrared temperature sensor is fixedly connected to the sensor mounting flange through the first external thread and the threaded hole.

[0012] The rainproof and dustproof cover is used to enclose the infrared temperature sensor. One end of the rainproof and dustproof cover is fixedly connected to the observation window flange by bolts and nuts. A fourth sealing ring is provided between the rainproof and dustproof cover and the observation window flange.

[0013] In one embodiment, a first sealing groove is formed on one side of the observation window flange, and the first sealing ring is engaged in the first sealing groove;

[0014] The tank flange has a second sealing groove, and the second sealing ring is snapped into the second sealing groove;

[0015] The observation window flange has a third sealing groove at the glass window mounting groove, and the third sealing ring is snapped into the third sealing groove;

[0016] A fourth sealing groove is provided on the other side of the observation window flange, and the fourth sealing ring is snapped into the fourth sealing groove.

[0017] In one embodiment, the first sealing ring is a double-layer sealing ring, and the first sealing groove is a double-layer sealing groove.

[0018] In one embodiment, the detachable infrared temperature measuring device further includes a sensor support plate;

[0019] One end of the sensor support plate and the sensor mounting flange are fixedly connected by bolts and nuts;

[0020] The infrared temperature sensor has a second external thread at its tail end, and the infrared temperature sensor is fixedly connected to the other end of the sensor support plate through the second external thread and the first nut.

[0021] In one embodiment, a signal line is led out from the tail of the infrared temperature sensor to an external processor, and the detachable infrared temperature measuring device also includes a metal flexible tube.

[0022] The flexible metal tube is used to wrap the signal line. The other end of the rainproof and dustproof cover is provided with an external threaded boss, and one end of the flexible metal tube is provided with an external threaded connector.

[0023] The rainproof and dustproof cover and the metal hose are fixedly connected by the external threaded boss, the external threaded connector and the second nut; the second nut is located outside the contact area between the external threaded boss and the external threaded connector.

[0024] In one embodiment, the rainproof and dustproof cover is made of stainless steel;

[0025] And / or, the metal hose is made of stainless steel;

[0026] And / or, the second nut is made of stainless steel;

[0027] And / or, the observation window flange is made of stainless steel.

[0028] In one embodiment, the diameter of the observation window flange is larger than the diameter of the rainproof and dustproof cover;

[0029] And / or, the diameter of the rainproof and dustproof cover is larger than the diameter of the sensor mounting flange;

[0030] And / or, the diameter of the tank flange is the same as the diameter of the observation window flange;

[0031] And / or, the diameter of the infrared glass window is the same as the diameter of the glass window mounting groove.

[0032] In one embodiment, an infrared temperature measurement channel is provided on the observation window flange;

[0033] The infrared temperature measurement channel is used to focus the infrared radiation signal emitted by the GIS tank and transmit it to the infrared temperature measurement sensor.

[0034] In one embodiment, the infrared glass window uses germanate glass doped with rare earth elements.

[0035] In one embodiment, the detachable infrared temperature measuring device is fixedly connected to the outside of the GIS tank;

[0036] The center of the tank flange is located on the axis of the GIS conductor inside the GIS tank.

[0037] The beneficial effects of this utility model are:

[0038] The detachable infrared temperature measuring device is externally placed in the GIS tank, and the cross-sectional dimensions of all components do not exceed the flange face dimensions of the tank, so that the device will not affect the internal electric field distribution of the GIS tank.

[0039] The various components are sealed together by sealing grooves and sealing rings. The observation window flange fixes the infrared glass window, and the remaining components are installed independently. This gives the device a flexible and detachable structure, which allows for the maintenance and disassembly of the infrared temperature sensor without interrupting the power supply to the GIS tank, ensuring that the normal operation of the GIS tank is not affected during disassembly and maintenance.

[0040] The infrared glass window contacts the sealing rings of the glass window mounting groove and the sealing rings of the tank flange to form a sealing structure, which enables the infrared glass window to effectively isolate the GIS tank. The infrared temperature sensor can monitor the conductor temperature inside the GIS tank non-contactly through the infrared glass window. The infrared glass window is made of rare earth-doped germanate glass, which is an ideal material that combines bending mechanical properties and high infrared transmittance. It is both strong and does not affect the accuracy of infrared temperature measurement.

[0041] The connection between the rainproof and dustproof cover and the metal hose effectively isolates the device from rain and dust. All exposed components are made of stainless steel, which is corrosion-resistant, enabling the device to be used in harsh environments and providing high safety.

[0042] The sensor mounting flange is connected to a sensor support plate, which can efficiently fix the infrared temperature sensor, avoid the influence of vibration, and further ensure the accuracy of infrared temperature measurement. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 A longitudinal sectional view of a detachable infrared temperature measurement device used in GIS;

[0045] Figure 2 To observe the cross-sectional view of the window flange;

[0046] Figure 3 Cross-sectional view of the sensor mounting flange;

[0047] Figure 4 This is a cross-sectional view of the tank flange;

[0048] Figure 5 This is a 3D diagram of a flexible metal hose.

[0049] Figure 6 A 3D model of a rain and dust cover;

[0050] Figure 7This is a 3D view of the infrared temperature sensor.

[0051] Figure 8 A schematic diagram of a GIS device equipped with a detachable infrared temperature measurement device;

[0052] Legend:

[0053] 1-Tank flange; 2-Observation window flange; 3-Sensor mounting flange; 4-Infrared glass window; 5-Infrared temperature sensor; 6-Rainproof and dustproof cover; 7-Metal hose; 8-Sensor support plate; 12-First sealing ring; 14-Second sealing ring; 24-Third sealing ring; 26-Fourth sealing ring; 58-First nut; 51-Signal wire; 52-First external thread; 53-Second external thread; 67-Second nut; 21-Glass window mounting groove; 22-Infrared temperature measurement channel; 114-Second sealing groove; 212-First sealing groove; 224-Third sealing groove; 226-Fourth sealing groove; 31-Threaded hole; 61-External thread boss; 71-External threaded connector; 10-Removable infrared temperature measuring device; 90-GIS tank. Detailed Implementation

[0054] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0055] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0056] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0057] This application provides a detachable infrared temperature measurement device for GIS, see [link to relevant documentation]. Figure 1 The detachable infrared temperature measurement device includes a tank flange 1, an observation window flange 2, a sensor mounting flange 3, an infrared glass window 4, an infrared temperature sensor 5, a rainproof and dustproof cover 6, a metal flexible hose 7, and a sensor support plate 8. A signal line 52 is led out from the tail of the infrared temperature sensor 5 to an external processor (not shown in the figure). The observation window flange 2 is fixedly connected to the tank flange 1 with bolts and nuts; the sensor mounting flange 3 is fixedly connected to the observation window flange 2 with bolts and nuts; one end of the sensor support plate 8 is fixedly connected to the sensor mounting flange 3 with bolts and nuts; and one end of the rainproof and dustproof cover 6 is fixedly connected to the observation window flange 2 with bolts and nuts.

[0058] See Figure 2 and Figure 3 The bottom of the observation window flange 2 is provided with a glass window mounting groove 21, and the infrared glass window 4 is placed in the glass window mounting groove 21, and the infrared glass window 4 is in contact with the tank flange 1.

[0059] Furthermore, a second sealing ring 14 is provided between the infrared glass window 4 and the tank flange 1, and a second sealing groove 114 is opened on the tank flange 1. The second sealing ring 14 is engaged in the second sealing groove 114, so that a sealing structure is formed between the infrared glass window 4 and the tank flange 1.

[0060] Furthermore, a third sealing ring 24 is provided between the infrared glass window 4 and the glass window mounting groove 21, and a third sealing groove 224 is opened at the glass window mounting groove 21. The third sealing ring 24 is engaged in the third sealing groove 224, so that the infrared glass window 4 and the observation window flange 2 form a sealing structure.

[0061] In this embodiment, as Figure 3 As shown, the observation window flange 2 is also provided with a first sealing groove 212 and a fourth sealing groove 226. A first sealing ring 12 is provided between the observation window flange 2 and the tank flange 1, and the first sealing ring 12 is engaged within the first sealing groove 212, thus forming a sealing structure between the observation window flange 2 and the tank flange 1. A fourth sealing ring 26 is provided between the rainproof and dustproof cover 6 and the observation window flange 2, and the fourth sealing ring 26 is engaged within the fourth sealing groove 226, thus forming a sealing structure between the rainproof and dustproof cover 6 and the observation window flange 2.

[0062] In one feasible solution, the first sealing ring 12 between the observation window flange 2 and the tank flange 1 is a double-layer sealing ring, and the corresponding first sealing groove 212 is a double-layer sealing groove. The double-layer sealing structure can further ensure the sealing performance.

[0063] Furthermore, such as Figure 4 and Figure 5As shown, the sensor mounting flange 3 has a threaded hole 31, and the detection head of the infrared temperature sensor 5 has a first external thread 52. The infrared temperature sensor 5 is fixedly connected to the sensor mounting flange 3 through the cooperation of the first external thread 52 and the threaded hole 31.

[0064] like Figure 5 As shown, the infrared temperature sensor 5 also has a second external thread 53 at its tail. Through the cooperation of the first nut 58 and the second external thread 53, the infrared temperature sensor 5 is fixedly connected to the other end of the sensor support plate 8, so that the sensor support plate 8 strengthens and fixes the infrared temperature sensor 5, ensuring the structural stability of the infrared temperature sensor 5.

[0065] Furthermore, such as Figure 6 and Figure 7 As shown, the other end of the rainproof and dustproof cover 6 is provided with an external threaded boss 61, and one end of the metal hose 7 is provided with an external threaded connector 71. The second nut 67 is located outside the contact area between the external threaded boss 61 and the external threaded connector 71. The external threaded boss 61 and the external threaded connector 71 are fixed by the second nut 67, thereby realizing the fixed connection between the rainproof and dustproof cover 6 and the metal hose 7.

[0066] As can be seen, the rainproof and dustproof cover 6 is used to cover the infrared temperature sensor 5, a portion of the signal lines 51 led out from the infrared temperature sensor 5, and the sensor mounting flange 3. The metal flexible tube 7 is used to cover the remaining signal lines 51 led out from the infrared temperature sensor 5. Therefore, the exposed components of this detachable infrared temperature measuring device mainly include the rainproof and dustproof cover 6, the metal flexible tube 7, the second nut 67, and the observation window flange 2. In one optional embodiment, the rainproof and dustproof cover 6, the metal flexible tube 7, the second nut 67, and the observation window flange 2 are all made of stainless steel. Of course, this embodiment is not limited to stainless steel; corrosion-resistant materials such as titanium alloy, copper alloy, and aluminum alloy can also be used.

[0067] Furthermore, the diameter of tank flange 1 is equal to the diameter of observation window flange 2, the diameter of observation window flange 2 is greater than the diameter of rainproof and dustproof cover 6, and the diameter of rainproof and dustproof cover 6 is greater than the diameter of sensor mounting flange 3. That is, the diameter of tank flange 1 = the diameter of observation window flange 2 > the diameter of rainproof and dustproof cover 6 > the diameter of sensor mounting flange 3.

[0068] In this embodiment, the diameter of the infrared glass window 4 is equal to the diameter of the glass window mounting groove 21.

[0069] like Figure 3As shown, an infrared temperature measurement channel 22 is provided on the observation window flange 2. The infrared temperature measurement channel 22 is used to focus the infrared radiation signal emitted by the GIS tank and transmit it to the infrared temperature sensor 5. Specifically, the infrared thermal radiation signal is focused onto the infrared glass window 4 through the infrared temperature measurement channel 22, and then reaches the infrared temperature sensor 5 through the infrared glass window 4. The infrared temperature sensor 5 converts the infrared thermal radiation signal into an electrical signal and transmits it to an external processor through the signal line 51.

[0070] In one feasible solution, the infrared glass window 4 uses germanate glass doped with rare earth elements. Of course, this embodiment is not limited to germanate glass; infrared glass window 4 can also be made of glass materials that can transmit infrared light, such as quartz glass, chalcogenide glass, fluoride glass, and borosilicate glass.

[0071] like Figure 8 As shown, the detachable infrared temperature measuring device 10 is fixedly connected to the outside of the GIS tank 90. ​​Specifically, the tank flange 1 is fixed to the outer wall of the GIS tank 90. ​​Through the mutual connection between the observation window flange 2, the sensor flange 3 and the tank flange 1, the detachable infrared temperature measuring device 10 is stably assembled on the GIS tank 90.

[0072] In one feasible embodiment, the center of the tank flange 1 is located on the axis of the GIS conductor within the GIS tank 90.

[0073] In this embodiment, for a GIS in operation, the infrared temperature sensor 5 can be maintained by disassembling the rainproof and dustproof cover 6 and the sensor support plate 8. The rainproof and dustproof cover 6 can be removed by removing the bolts between the rainproof and dustproof cover 6 and the observation window flange 2. The bolts between the sensor support plate 8 and the sensor mounting flange 3 can be removed, and the first nut 58 between the sensor support plate 8 and the infrared temperature sensor 5 can be removed to remove the sensor support plate 8. Finally, the threaded temperature measuring head of the infrared temperature sensor 5 can be unscrewed from the threaded hole of the sensor mounting flange to completely remove the infrared temperature sensor 5.

[0074] Based on the above embodiments, the beneficial effects of this utility model can be obtained as follows:

[0075] 1. The detachable infrared temperature measuring device is placed outside the GIS tank, and the cross-sectional dimensions of all components do not exceed the flange face dimensions of the tank, so that the device will not affect the internal electric field distribution of the GIS tank.

[0076] 2. The various components are sealed together by sealing grooves and sealing rings. The observation window flange fixes the infrared glass window, and the remaining components are installed independently. This gives the device a flexible and detachable structure, which allows for the maintenance and disassembly of the infrared temperature sensor without interrupting the power supply to the GIS tank, ensuring that the normal operation of the GIS tank is not affected during disassembly and maintenance.

[0077] 3. The infrared glass window contacts the sealing ring of the glass window mounting groove and the sealing ring of the tank flange to form a sealing structure, which enables the infrared glass window to effectively isolate the GIS tank. The infrared temperature sensor can monitor the conductor temperature inside the GIS tank non-contactly through the infrared glass window. The infrared glass window is made of rare earth-doped germanate glass, which is an ideal material that combines bending mechanical properties and high infrared transmittance. It is both strong and does not affect the accuracy of infrared temperature measurement.

[0078] 4. The connection between the rainproof and dustproof cover and the metal hose effectively isolates the device from rainwater and dust. All exposed components of the device are made of stainless steel, which has corrosion resistance, enabling the device to be used in harsh environments and providing high safety.

[0079] 5. The sensor mounting flange is connected to a sensor support plate, which can efficiently fix the infrared temperature sensor, avoid the influence of vibration, and further ensure the accuracy of infrared temperature measurement.

[0080] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application, and should all be included within the protection scope of this application.

Claims

1. A detachable infrared temperature measuring device for GIS, characterized by, This includes tank flanges, observation window flanges, sensor mounting flanges, infrared glass windows, infrared temperature sensors, and rain and dust covers; The observation window flange and the tank flange are fixedly connected by bolts and nuts, and a first sealing ring is provided between the observation window flange and the tank flange; The bottom of the observation window flange is provided with a glass window mounting groove, the infrared glass window is placed in the glass window mounting groove, and the infrared glass window is in contact with the tank flange; A second sealing ring is provided between the infrared glass window and the tank flange, and a third sealing ring is provided between the infrared glass window and the glass window mounting groove; The sensor mounting flange and the observation window flange are fixedly connected by bolts and nuts; The sensor mounting flange has a threaded hole, and the detection head of the infrared temperature sensor has a first external thread. The infrared temperature sensor and the sensor mounting flange are fixedly connected through the first external thread and the threaded hole. The rainproof and dustproof cover is used to enclose the infrared temperature sensor. One end of the rainproof and dustproof cover is fixedly connected to the observation window flange by bolts and nuts. A fourth sealing ring is provided between the rainproof and dustproof cover and the observation window flange.

2. The detachable infrared temperature measurement device for GIS according to claim 1, wherein A first sealing groove is formed on one side of the observation window flange, and the first sealing ring is snapped into the first sealing groove; The tank flange has a second sealing groove, and the second sealing ring is snapped into the second sealing groove; The observation window flange has a third sealing groove at the glass window mounting groove, and the third sealing ring is snapped into the third sealing groove; A fourth sealing groove is provided on the other side of the observation window flange, and the fourth sealing ring is snapped into the fourth sealing groove.

3. The detachable infrared temperature measurement device for GIS according to claim 2, wherein The first sealing ring is a double-layer sealing ring, and the first sealing groove is a double-layer sealing groove.

4. The detachable infrared temperature measurement device for GIS according to claim 1, wherein The detachable infrared temperature measurement device also includes a sensor support plate; One end of the sensor support plate and the sensor mounting flange are fixedly connected by bolts and nuts; The infrared temperature sensor has a second external thread at its tail end, and the infrared temperature sensor is fixedly connected to the other end of the sensor support plate through the second external thread and the first nut.

5. The detachable infrared temperature measurement device for GIS according to claim 1, wherein The infrared temperature sensor has a signal line led out from its tail to an external processor, and the detachable infrared temperature measuring device also includes a metal flexible tube. The flexible metal tube is used to wrap the signal line. The other end of the rainproof and dustproof cover is provided with an external threaded boss, and one end of the flexible metal tube is provided with an external threaded connector. The rainproof and dustproof cover and the metal hose are fixedly connected by the external threaded boss, the external threaded connector and the second nut; the second nut is located outside the contact area between the external threaded boss and the external threaded connector.

6. The detachable infrared temperature measurement device for GIS according to claim 5, wherein The rainproof and dustproof cover is made of stainless steel. And / or, the metal hose is made of stainless steel; And / or, the second nut is made of stainless steel; And / or, the observation window flange is made of stainless steel.

7. The detachable infrared temperature measurement device for GIS according to claim 1, wherein The diameter of the observation window flange is larger than the diameter of the rainproof and dustproof cover; And / or, the diameter of the rainproof and dustproof cover is larger than the diameter of the sensor mounting flange; And / or, the diameter of the tank flange is the same as the diameter of the observation window flange; And / or, the diameter of the infrared glass window is the same as the diameter of the glass window mounting groove.

8. The detachable infrared temperature measurement device for GIS according to claim 1, wherein An infrared temperature measurement channel is provided on the observation window flange; The infrared temperature measurement channel is used to focus the infrared radiation signal emitted by the GIS tank and transmit it to the infrared temperature measurement sensor.

9. The detachable infrared temperature measurement device for GIS according to claim 1, wherein The infrared glass window uses germanate glass doped with rare earth elements.

10. The detachable infrared temperature measurement device for GIS according to claim 1, wherein The detachable infrared temperature measuring device is fixedly connected to the outside of the GIS tank. The center of the tank flange is located on the axis of the GIS conductor inside the GIS tank.

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