Infrared heating device and GIS

Abstract

The utility model belongs to the field of gas insulated switch devices, and particularly relates to an infrared heating device and a GIS (Gas Insulated Switchgear). In order to enable a worker to replace an infrared heater in time, the utility model provides an infrared heating device. The infrared heating device comprises an arc-shaped shell and at least one arc-shaped wire holder detachably mounted on the shell, and the arc-shaped wire holder is detachably mounted at the axial end part of the shell; at least one infrared heater is detachably installed on each arc-shaped wire holder, the total number of the infrared heaters is at least two, and each infrared heater is provided with a temperature sensor used for detecting the temperature of the infrared heater. The utility model also provides a GIS (Gas Insulated Switchgear) comprising the infrared heating device. The temperature sensor is used for independently monitoring the temperature of a single infrared sensor, so that whether each infrared heater breaks down or not can be conveniently detected, and the arc-shaped wire holder is arranged at the axial end part of the shell, so that the arc-shaped wire holder is convenient to disassemble, and the infrared heaters are convenient to replace.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of gas insulated switchgear, especially relates to an infrared heating device and GIS. BACKGROUND

[0002] GIS (Gas Insulated Switchgear, gas insulated switchgear) is a kind of switchgear filled with insulating gas.In low temperature environment, in order to ensure that the insulating gas still has sufficient insulation performance, the insulating gas needs to be heated.

[0003] The utility model discloses a kind of gas insulated switchgear (i.e., GIS), GIS includes circuit breaker main cylinder, heating band and temperature controller, heating band is wound on the outer cylinder wall of circuit breaker main cylinder, temperature controller is used to control heating band whether work according to external environment temperature, to avoid the liquefaction of sulfur hexafluoride gas (i.e., insulating gas) in GIS, so that GIS can normally operate in low temperature environment.

[0004] However, the heating element in the above heating band is resistance wire, and the resistance wire is prone to aging, damage and other problems under the working conditions of long-term high temperature and high voltage, resulting in poor reliability of the heating band.Once the heating band fails, the insulation performance of the GIS will be affected, and serious accidents may occur.

[0005] Compared with resistance wire heating mode, infrared heating mode is more suitable for long-term high temperature and high voltage working conditions.In the prior art, there are a large number of infrared heating devices, among which, the infrared heating device with a square shape is not suitable for the cylinder body of GIS;Since the cylinder body of GIS has connecting flanges at both ends, and the GIS cannot be disassembled at will after assembly, the infrared heating device with a cylindrical shape is also not suitable for the cylinder body of GIS.At present, only the infrared heating device with an arc shape is suitable for the cylinder body of GIS.

[0006] For example, the utility model discloses a kind of fixed structures for infrared heating ring outer surface cooling, and the heating structure includes two half circular arc shells (equivalent to the central angle of shell corresponding to 180 °), the circumferential one end of two shells is hinged by hinge, and the circumferential other end is detachably fixedly connected by connecting structure, so that two shells are connected head to tail to form a complete cylinder, when using, the cylinder is sleeved on barrel (plastic production, not the cylinder body of GIS) (or barrel passes through the internal passage of the above-mentioned cylinder).

[0007] Meanwhile, arc-shaped mounting blocks (equivalent to arc-shaped wire holders) are fixedly installed on the inner walls of the two axial ends of the shell, the central angle corresponding to the arc-shaped mounting blocks is not greater than the central angle corresponding to the shell, a plurality of infrared heating pipes for heating the barrel are installed on the arc-shaped mounting blocks, and heat insulation pads are fixedly installed on the inner sides of the arc-shaped mounting blocks.

[0008] When the above heating structure is applied to GIS, when the infrared heating pipes are damaged during use, since the infrared heating pipes are located on the inner side of the shell, the workers cannot observe the damage of the infrared heating pipes with naked eyes, if a plurality of infrared heating pipes are damaged at the same time, the temperature of the insulating gas is too low, the insulating performance is affected, and a safety accident is caused in a serious case.

[0009] For the above heating structure, when the workers replace the infrared heating pipes, the infrared heating device must be detached from the barrel, and the replacement is relatively troublesome. Practical new type content

[0010] The technical problem to be solved by the infrared heating device is to enable workers to know the damage of the infrared heating pipes in time and to solve the problem that the replacement of the infrared heating pipes is relatively troublesome.

[0011] The technical problem to be solved by the GIS is the same as the above.

[0012] To achieve the above object, the technical scheme of the infrared heating device provided by the utility model is as follows:

[0013] An infrared heating device comprises a circular-arc-shaped shell and at least one arc-shaped wire holder installed on the shell, the central angle corresponding to the shell is not greater than 180 degrees, the central angle corresponding to the arc-shaped wire holder is not greater than 180 degrees, when the number of the arc-shaped wire holders is one, the arc-shaped wire holder is detachably installed on one axial end of the shell, when the number of the arc-shaped wire holders is at least two, all the arc-shaped wire holders are detachably installed on one axial end of the shell, or all the arc-shaped wire holders are respectively detachably installed on the two axial ends of the shell, at least one infrared heater is detachably installed on each arc-shaped wire holder, the total number of the infrared heaters is at least two, and each infrared heater is provided with a temperature sensor for detecting the temperature of the infrared heater.

[0014] Further, the shell comprises an arc-shaped radiation heat transfer layer and an arc-shaped heat preservation layer, the radiation heat transfer layer is located on the inner side of the heat preservation layer, and the infrared heater is arranged between the radiation heat transfer layer and the heat preservation layer; the emissivity of the radiation heat transfer layer is higher than that of the heat preservation layer.

[0015] Further, the radiation heat transfer layer is made of NIRC.

[0016] Further, the temperature sensor is a passive temperature sensor.

[0017] Further, each temperature sensor is provided with a state display device, each state display device is in a normal display state when the infrared heater is working normally, and is in an abnormal display state when the infrared heater is faulty.

[0018] Further, the state display device is a state display lamp, the state display lamp is in a light-emitting state when the state display lamp is in the normal display state, and the state display lamp is in an extinguished state when the state display lamp is in the abnormal display state.

[0019] Further, the infrared heating device further comprises a controller, the controller is used to control the voltage applied to the infrared sensor to control the power of the infrared sensor.

[0020] Further, the sum of the central angles corresponding to the arc-shaped wire holders at the same end of the shell is not greater than the central angle corresponding to the shell.

[0021] The infrared heating device has the following beneficial effects: the infrared heating device is an improved invention. Compared with the prior art, in the infrared heating device, the arc-shaped wire holders are detachably mounted at the axial ends of the shell, and each infrared heater is provided with a temperature sensor, so that the corresponding infrared heater can be conveniently detected for failure through the temperature sensor. Since the central angle corresponding to the shell is not greater than 180°, the shell can be conveniently mounted on the cylinder of the GIS. During the process of heating the cylinder of the GIS by using the infrared heater, when an infrared heater is damaged, the corresponding temperature sensor can immediately detect the temperature abnormality of the infrared heater, and the infrared heater can be replaced in time by the staff. Specifically, the staff can replace the infrared heater according to the following steps:

[0022] Step S1, stop all infrared heaters from working, and wait for the infrared heaters to drop to an appropriate temperature to avoid the staff being scalded by the infrared heaters;

[0023] Step S2, dismount the corresponding arc-shaped wire holder, replace the corresponding infrared heater, and then mount the arc-shaped wire holder on the shell.

[0024] To achieve the above-mentioned purpose, the technical scheme of the GIS provided by the utility model is as follows:

[0025] A GIS comprises a cylinder and a heating device for heating the cylinder, the heating device being an infrared heating device, the infrared heating device comprising a circular-arc-shaped shell and at least one arc-shaped terminal block mounted on the shell, the central angle corresponding to the shell being no more than 180°, the central angle corresponding to the arc-shaped terminal block being no more than 180°, when the number of arc-shaped terminal blocks is one, the arc-shaped terminal block is detachably mounted on one end of the shell in the axial direction; when the number of arc-shaped terminal blocks is at least two, all arc-shaped terminal blocks are detachably mounted on one end of the shell in the axial direction, or all arc-shaped terminal blocks are respectively detachably mounted on both ends of the shell in the axial direction; at least one infrared heater is detachably mounted on each arc-shaped terminal block, the total number of infrared heaters is at least two, and each infrared heater is provided with a temperature sensor for detecting the temperature of the infrared heater.

[0026] Further, the shell comprises an arc-shaped radiation heat transfer layer and an arc-shaped heat preservation layer, the radiation heat transfer layer is located on the inner side of the heat preservation layer, and the infrared heater is arranged between the radiation heat transfer layer and the heat preservation layer; the emissivity of the radiation heat transfer layer is higher than that of the heat preservation layer.

[0027] Further, the radiation heat transfer layer is made of NIRC.

[0028] Further, the temperature sensor is a passive temperature sensor.

[0029] Further, each temperature sensor is provided with a state display device, each state display device is used to be in a normal display state when the infrared heater is working normally, and is used to be in an abnormal display state when the infrared heater is faulty.

[0030] Further, the state display device is a state display lamp, when the state display lamp is in the normal display state, the state display lamp is in a light-emitting state, and when the state display lamp is in the abnormal display state, the state display lamp is in an extinguished state.

[0031] Further, the infrared heating device further comprises a controller, the controller is used to control the voltage applied to the infrared sensor to control the power of the infrared sensor.

[0032] Further, the sum of the central angles corresponding to the arc-shaped terminal blocks located on the same end of the shell is no more than the central angle corresponding to the shell.

[0033] Further, the number of infrared heating devices is at least two, and all infrared heating devices are detachably connected head-to-tail in the circumferential direction to form an infrared heating cylinder, and the infrared heating cylinder is sleeved on the cylinder.

[0034] The GIS provided by the utility model has the beneficial effects that: the utility model is an improved invention. Compared with the prior art, in the utility model, the arc-shaped wiring seat is detachably installed at the end of the shell in the axial direction, and each infrared heater is provided with a temperature sensor, so that the corresponding infrared heater can be conveniently detected for failure through the temperature sensor. Since the central angle corresponding to the shell is not greater than 180°, the shell can be conveniently installed on the cylinder, and when an infrared heater is damaged in the process of heating the cylinder by the infrared heater, the corresponding temperature sensor can immediately detect the temperature anomaly of the infrared heater, and the staff can timely replace the infrared heater. Specifically, the staff can replace the infrared heater according to the following steps:

[0035] Step S1, stop all infrared heaters from working, and wait for the infrared heaters to drop to a suitable temperature to avoid the staff being scalded by the infrared heaters;

[0036] Step S2, disassemble the corresponding arc-shaped wiring seat, replace the corresponding infrared heater, and then install the arc-shaped wiring seat on the shell. BRIEF DESCRIPTION OF DRAWINGS

[0037] Fig. 1 It is a structural schematic view of one angle of the infrared heating device of the utility model (omitting the heat preservation layer);

[0038] Fig. 2 It is a structural schematic view of another angle of the infrared heating device of the utility model.

[0039] MARKING OF THE DRAWINGS:

[0040] 1, shell; 11, radiation heat transfer layer; 12, heat preservation layer; 2, arc-shaped wiring seat; 3, base; 4, controller; 5, temperature sensor; 6, positioning protrusion. DETAILED DESCRIPTION

[0041] To solve the problems in the background art, the core inventive concept of the utility model is that the temperature of a single infrared sensor is monitored by a temperature sensor, so that whether each infrared heater is faulty can be conveniently detected, and the arc-shaped wiring seat is arranged at the end of the shell in the axial direction, so that the arc-shaped wiring seat is conveniently disassembled and the infrared heater is conveniently replaced.

[0042] The utility model will be further described in detail in combination with the embodiments.

[0043] The specific embodiments of the infrared heating device provided by the utility model are as follows:

[0044] The infrared heating device in the utility model is suitable for heating the cylindrical object, which can be the cylinder of GIS or the barrel of plastic production, and the structure of the infrared heating device is described in detail by taking the heating of the cylinder of GIS by the infrared heating device as an example.

[0045] Referring to Figs. 1-2 As shown in the figure, the infrared heating device comprises an arc-shaped shell 1 and at least one arc-shaped terminal block 2 installed on the shell 1, the central angle corresponding to the shell 1 is not greater than 180°, the central angle corresponding to the arc-shaped terminal block 2 is not greater than 180°, when the number of arc-shaped terminal blocks 2 is one, the arc-shaped terminal block 2 is detachably installed at one end of the shell 1 in the axial direction; when the number of arc-shaped terminal blocks 2 is at least two, all the arc-shaped terminal blocks 2 are detachably installed at one end of the shell 1 in the axial direction, or all the arc-shaped terminal blocks 2 are respectively detachably installed at both ends of the shell 1 in the axial direction; at least one infrared heater is detachably installed on each arc-shaped terminal block 2, the total number of infrared heaters is at least two, and each infrared heater is provided with a temperature sensor 5 for detecting the temperature of the infrared heater.

[0046] Among them, the arc-shaped terminal block 2 can be detachably installed on the shell 1 through bolt connection, clamping and other ways, and its essence is that one object (arc-shaped terminal block 2) is detachably installed at the end of another object (shell 1).

[0047] Among them, the reason why the number of infrared heaters is at least two is that when one of the infrared heaters is damaged, other infrared heaters can still heat the cylinder, thereby avoiding causing safety accidents. When the number of infrared heaters is more, the probability of simultaneous damage of all the infrared heaters is smaller, and the safety is better; when the number of infrared heaters is smaller, the cost is lower. The number of infrared heaters can be determined by the actual working condition of the person skilled in the art.

[0048] Among them, the infrared heater is preferably an infrared heating pipe, which is composed of an elongated metal pipe coated with a radiation material on the outer surface and a resistance wire ring, and has a simple structure, and since the infrared heating pipe is a rotary body, the installation angle of the infrared heating pipe does not need to be deliberately noticed during installation, which is convenient for installation. Of course, the infrared heater can also be a long strip-shaped, square-shaped or other shaped infrared heater, at this time, in order to ensure that the facing area of the infrared heater on the side close to the cylinder of the shell 1 is maximum, the installation angle of the infrared heating pipe needs to be noticed, otherwise the heating effect will be affected.

[0049] The temperature sensor 5 is preferably a passive temperature sensor, which does not need an external power supply, and thus does not need to be provided with a power supply circuit, and has a simple structure. In other embodiments, the temperature sensor 5 can also be an active temperature sensor, in which case a power supply circuit for supplying power to the temperature sensor 5 needs to be provided on the terminal seat or the shell 1. Compared with an active temperature sensor, when the temperature sensor 5 is a passive temperature sensor, the power supply circuit is omitted, so that the infrared heating device has a simple structure, low cost, convenient maintenance, and high reliability.

[0050] Preferably, in the specific embodiment shown in the drawings, the arc-shaped terminal seat 2 corresponds to a central angle of 180°, and the shell 1 corresponds to a central angle of 180°; the number of arc-shaped terminal seats 2 is one, and the arc-shaped terminal seat 2 is detachably mounted at one end of the shell 1 in the axial direction, and the other end of the shell 1 in the axial direction has a base 3 (i.e., the base 3 is part of the shell 1), and the temperature sensor 5 is mounted on the base 3. Figs. 1-2

[0051] However, in other embodiments, the number of arc-shaped terminal seats 2 can be two, and the two arc-shaped terminal seats 2 are respectively detachably mounted at the two ends of the shell 1 in the axial direction; or, the two arc-shaped terminal seats 2 are both detachably mounted at one end of the shell 1 in the axial direction, in which case the central angle (e.g., 180°) corresponding to the shell 1 can be twice the central angle (e.g., 90°) corresponding to the arc-shaped terminal seat 2, or the central angle corresponding to the shell 1 is 150°, and the central angle corresponding to the arc-shaped terminal seat 2 is 100°, in which case the sum of the central angles of the two arc-shaped terminal seats 2 is 200°. Of course, the number of arc-shaped terminal seats 2 can also be three, four or more, and all the arc-shaped terminal seats 2 can be mounted at one end of the shell 1 in the axial direction, or all the arc-shaped terminal seats 2 are respectively mounted at the two ends of the shell 1 in the axial direction, and the number of arc-shaped terminal seats 2 at the two ends of the shell 1 in the axial direction can be the same or different, which will not be described here.

[0052] However, in other embodiments, the central angle corresponding to the shell 1 can also be 45°, 90°, 135° or 179°, etc., as long as the central angle corresponding to the shell 1 is not greater than 180°, the shell 1 can be conveniently mounted on the cylinder from the side; similarly, the central angle corresponding to the arc-shaped terminal seat 2 can also be 22.5°, 45°, 90°, 135° or 179°, etc., as long as the central angle corresponding to the arc-shaped terminal seat 2 is not greater than 180°.

[0053] ​Preferably, in one specific embodiment, the sum of the central angles corresponding to the arc-shaped terminal blocks 2 located at the same end of the housing 1 (the number of arc-shaped terminal blocks 2 located at the same end of the housing 1 can be one, two or more) is not greater than the central angle corresponding to the housing 1, resulting in a simple structure and small size. In this case, when the number of infrared heating devices on the cylinder is at least two, and all infrared heating devices are connected end-to-end along the circumference to form an infrared heating cylinder, infrared heating tubes can be installed within a 360° circumferential range of the infrared heating cylinder, resulting in high heating efficiency.

[0054] In other specific embodiments, the sum of the central angles corresponding to the arc-shaped terminal blocks 2 located at the same end of the housing 1 (the number of arc-shaped terminal blocks 2 located at the same end of the housing 1 can be one, two or more) can also be 120°, and the central angle corresponding to the housing 1 can be 90°. In this case, when there are three infrared heating devices on the cylinder, and all the infrared heating devices are connected end to end along the circumference to form an infrared heating cylinder, only a 270° range can be set within the 360° circumferential range of the infrared heating cylinder.

[0055] Compared to existing technologies, in this invention, the arc-shaped terminal block 2 is detachably mounted on the axial end of the housing 1, and each infrared heater is equipped with a temperature sensor 5. The temperature sensor 5 allows for convenient detection of any malfunctions in the corresponding infrared heater. Since the central angle corresponding to the housing 1 is no greater than 180°, the housing 1 can be easily mounted on the GIS cylinder. During the heating process of the GIS cylinder using infrared heaters, if any infrared heater malfunctions, the corresponding temperature sensor 5 can immediately detect the abnormal temperature, allowing operators to replace the infrared heater promptly. Specifically, operators can replace the infrared heater according to the following steps:

[0056] Step S1: Stop all infrared heaters from working and wait for them to cool down to a suitable temperature to avoid burns to workers.

[0057] Step S2: Disassemble the corresponding arc-shaped terminal block 2 and replace the corresponding infrared heater. Then reinstall the arc-shaped terminal block 2 onto the housing 1.

[0058] Preferably, the arc-shaped terminal block 2 is provided with a positioning protrusion 6, and the infrared heater is provided with a positioning groove that positions and cooperates with the positioning protrusion 6, so as to better position the infrared heater in a specific installation position and a specific installation angle; of course, the positioning protrusion 6 can also be provided on the infrared heater, and a corresponding positioning groove can be provided on the arc-shaped terminal block 2.

[0059] To improve energy utilization, preferably, as a specific embodiment, the housing 1 includes an arc-shaped radiative heat transfer layer 11 and an arc-shaped heat insulation layer 12. The radiative heat transfer layer 11 is located inside the heat insulation layer 12, and an infrared heater is disposed between the radiative heat transfer layer 11 and the heat insulation layer 12. The emissivity of the radiative heat transfer layer 11 is higher than that of the heat insulation layer 12.

[0060] Preferably, the radiative heat transfer layer 11 is made of NIRC (Nano Infrared Radiative Cooling), for example, the NIRC from Mingxin New Materials Co., Ltd. has an emissivity of up to 0.986; the insulation layer 12 is made of conventional insulation materials such as silicon carbide fiber, ceramic fiber, glass wool, or aerogel. The area of ​​the insulation layer 12 in contact with the infrared heater can be coated with a radiation-shielding material, or the entire insulation layer 12 can be made of a radiation-shielding insulation material.

[0061] During use, the radiative heat transfer layer 11 can quickly absorb and emit infrared rays, while the insulation layer 12 can prevent heat loss, thus allowing as much heat as possible to be directionally transferred to the cylinder, resulting in high energy utilization. When the radiative heat transfer layer 11 is made of a material with an emissivity greater than 0.9, such as NIRC, the heat dissipation efficiency of the radiative heat transfer layer 11 is high for the infrared heater. That is, the heat emitted by the infrared heater is quickly transferred to the cylinder through the radiative heat transfer layer 11, preventing a large amount of heat from accumulating at the infrared heater, thereby avoiding overheating of the infrared heater and extending its service life.

[0062] However, in other specific embodiments, the housing 1 can also be made of the same material. In this case, the infrared heater has a larger power to meet the heating requirements of the GIS.

[0063] To facilitate on-site assessment of the infrared heater's operating status, in one specific embodiment, each temperature sensor 5 is equipped with a status display device. Each status display device is used to display normally when the infrared heater is working properly and to display abnormally when the infrared heater malfunctions.

[0064] Preferably, the status display device is a status indicator light. When the status indicator light is in a normal display state, it is in an illuminated state (it can emit green light, red light, or other colored light). When the status indicator light is in an abnormal display state, it is in an off state. The structure is simple.

[0065] Staff can quickly determine the status of the infrared heater by observing the status indicator lights and whether there is a malfunction. If there is a malfunction, staff can quickly identify which infrared heater corresponds to the off status indicator light, making it easier for staff to repair the infrared heating device.

[0066] In other specific embodiments, the status display device may also be a display screen, which is used to display the word "normal" when the infrared heater is working normally (at this time, the display screen is in normal display state), and to display the word "fault" when the infrared heater malfunctions (at this time, the display screen is in abnormal display state).

[0067] Specifically, the temperature measured by temperature sensor 5 can be used to determine whether each infrared sensor is faulty, and controller 4 can be used to control each status display device to be in the corresponding state.

[0068] Preferably, the controller 4 can transmit the data measured by the infrared sensor to the host computer via a data cable, Wi-Fi, or Bluetooth. The host computer can be a mobile phone, tablet, or data transfer server, etc. Alternatively, the controller 4 can first perform preliminary processing on the data measured by the infrared sensor and then transmit a normal signal representing that the infrared sensor is normal or an abnormal signal representing that the infrared sensor is abnormal to the host computer.

[0069] Staff can remotely detect whether an infrared heater is damaged using mobile phones and other devices, and can promptly repair the infrared heating device.

[0070] Of course, controller 4 may not transmit the data measured by the infrared sensor to the host computer. In this case, the staff needs to regularly inspect the infrared heating device and use the status display device to determine whether the infrared heater is damaged.

[0071] Since the internal resistance of the infrared heater is constant, the heating power of the infrared heater can be controlled by adjusting the voltage applied to the infrared heater. Preferably, the controller 4 is also used to control the voltage applied to the infrared sensor in order to control the power of the infrared sensor.

[0072] At this point, controller 4 can determine the actual power of the infrared sensor based on parameters such as ambient temperature, temperature measured by the infrared sensor, and wind speed, thereby saving energy and extending the service life of the infrared heater. Ambient temperature, wind speed, and other parameters can be sent to controller 4 from the host computer.

[0073] In other specific ways, referring to the Chinese utility model patent with authorization announcement number CN202167784U, the controller 4 can also be used only to control whether the infrared heater is working. In this case, the power of the infrared heater is always maintained at a high level to meet the heating requirements of the insulating gas under any circumstances.

[0074] Specific embodiments of the GIS provided by this utility model:

[0075] A GIS includes a cylinder and a heating device for heating the cylinder, wherein the heating device is an infrared heating device. The specific structure of the infrared heating device is the same as that of any specific embodiment of the infrared heating device of this utility model, and will not be described again here.

[0076] The number of infrared heating devices can be one. Since the housing 1 does not need to be disassembled, only the arc-shaped terminal block 2 needs to be disassembled. Therefore, the housing 1 can be fixed to the outer wall of the cylinder by means of bonding or welding. Of course, the housing 1 can also be fixed to the outer wall of the cylinder or the connecting flange by means of bolts or pins.

[0077] The number of infrared heating devices can also be at least two, and all infrared heating devices can be detachably connected end to end along the circumference to form an infrared heating cylinder, with the infrared heating cylinder fitted onto the cylinder body. For example, if there are two infrared heating devices, the central angle corresponding to each infrared heating device is 180°. The two ends of the circumference of the two infrared heating devices are respectively provided with bolt through holes and threaded holes. The bolts pass through the bolt through holes and are fixedly connected to the threaded holes, thereby allowing the two infrared heating devices to be detachably connected end to end along the circumference to form an infrared heating cylinder.

[0078] In other specific embodiments, referring to the Chinese utility model patent with authorization announcement number CN210911099U, the two infrared heating devices can also be hinged at one circumferential end and detachably fixed at the other circumferential end through a connecting structure.

[0079] In other embodiments, the number of infrared heating devices can also be three, in which case the central angle corresponding to each infrared heating device is 120°. The three infrared heating devices can also be detachably connected together by bolts.

[0080] Of course, slots and blocks can also be set at both ends of the axial direction of the infrared heating device. In this case, the infrared heating devices are connected together to form an infrared heating cylinder.

[0081] In this embodiment, the number of infrared heating devices constituting the same infrared heating cylinder is not limited. Those skilled in the art can select and determine the number of infrared heating devices as needed, based on the cylinder's dimensions. When the cylinder's dimensions are large, the number of infrared heating devices constituting the same infrared heating cylinder can be increased, thereby reducing the volume and weight of each infrared heating device.

[0082] Finally, it should be noted that the above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some of the technical features, or organically combine different specific implementation methods to create appendices. Figs. 1-2 The specific embodiments described herein are provided, but those skilled in the art can certainly devise other specific embodiments not shown in the accompanying drawings. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An infrared heating device, comprising an arc-shaped housing and at least one arc-shaped terminal block mounted on the housing, wherein the central angle corresponding to the housing is not greater than 180°, and the central angle corresponding to the arc-shaped terminal block is not greater than 180°, characterized in that, When there is one arc-shaped terminal block, the arc-shaped terminal block is detachably installed at one end of the housing axis; when there are at least two arc-shaped terminal blocks, all arc-shaped terminal blocks are detachably installed at one end of the housing axis, or all arc-shaped terminal blocks are detachably installed at both ends of the housing axis respectively; at least one infrared heater is detachably installed on each arc-shaped terminal block, the total number of infrared heaters is at least two, and each infrared heater is equipped with a temperature sensor for detecting the temperature of the infrared heater.

2. The infrared heating device as described in claim 1, characterized in that, The shell includes an arc-shaped radiative heat transfer layer and an arc-shaped insulation layer. The radiative heat transfer layer is located inside the insulation layer, and the infrared heater is disposed between the radiative heat transfer layer and the insulation layer. The emissivity of the radiative heat transfer layer is higher than that of the insulation layer.

3. The infrared heating device as described in claim 2, characterized in that, The radiative heat transfer layer is made of NIRC.

4. The infrared heating device according to any one of claims 1 to 3, characterized in that, The temperature sensor is a passive temperature sensor.

5. The infrared heating device according to any one of claims 1 to 3, characterized in that, Each temperature sensor is equipped with a status display device. Each status display device is used to display the normal status when the infrared heater is working normally, and to display the abnormal status when the infrared heater malfunctions.

6. The infrared heating device as described in claim 5, characterized in that, The status display device is a status indicator light. When the status indicator light is in a normal display state, it is lit. When the status indicator light is in an abnormal display state, it is off.

7. The infrared heating device according to any one of claims 1 to 3, characterized in that, The infrared heating device also includes a controller, which controls the voltage applied to the infrared sensor to control the power of the infrared sensor.

8. The infrared heating device according to any one of claims 1 to 3, characterized in that, The sum of the central angles corresponding to the arc-shaped terminals located at the same end of the housing is not greater than the central angle corresponding to the housing.

9. A GIS, comprising a cylinder and a heating device for heating the cylinder, characterized in that, The heating device is the infrared heating device as described in any one of claims 1 to 8.

10. The GIS as described in claim 9, characterized in that, The number of infrared heating devices is at least two, and all infrared heating devices are detachably connected end to end along the circumference to form an infrared heating cylinder, and the infrared heating cylinder is fitted onto the cylinder body.

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