Thermocouple for long-distance use of high-temperature furnace

Abstract

The utility model provides a thermocouple for long-distance use of a high-temperature furnace, a temperature transmission meter head is connected with a temperature measurement structure through a connection structure, and the outer side of the connection structure is coated with a fireproof flame-retardant layer; the temperature transmission meter head is installed in an installation structure far away from the high-temperature furnace, the installation structure comprises a supporting frame, an installation frame and an installation plate, the installation frame is arranged on the supporting frame, the installation plate is of a plate-shaped structure with an inverted-L-shaped cross section, a U-shaped opening is formed in the upper surface of the installation plate, and the temperature transmission meter head is arranged at the U-shaped opening. And the side wall of the mounting plate is mounted on the mounting frame through a hoop and a nut. The temperature transmission meter head is mounted on the mounting structure far away from the calcium carbide furnace cover by using the lengthened connecting structure, so that the influence of a high-temperature furnace is effectively avoided; the temperature transmission meter head is inserted into the U-shaped opening of the mounting plate, so that the use is convenient; and the mounting plate is mounted on the mounting frame by using a hoop and a nut, so that the relative height of the mounting plate on the mounting frame can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of thermocouples, and more specifically to a thermocouple used in the field of high-temperature furnaces. Background Art

[0002] For high-temperature furnaces or devices such as calcium carbide furnaces and cement kilns, it is necessary to monitor the internal temperature of the device when working for a long time. Take the calcium carbide furnace as an example. The calcium carbide furnace is the main equipment for producing calcium carbide. In the calcium carbide furnace, the high temperature generated by the electric arc causes the furnace charge to melt and react to generate calcium carbide; the reaction temperature in the calcium carbide furnace is as high as 2000℃, which causes the temperature at the furnace cover of the calcium carbide furnace to be much higher than that of other reaction equipment. At the same time, if the operator fails to check the tightness of the furnace cover as required or fails to deal with gas leakage in time during the operation, the furnace cover may catch fire. If the thermocouple head used to measure the temperature in the calcium carbide furnace is directly set on the furnace cover of the calcium carbide furnace, the excessive temperature at the furnace cover or the fire on the furnace cover will damage the thermocouple head or have a serious impact on the monitoring data. Therefore, the thermocouple head cannot be directly installed on the furnace cover of the calcium carbide furnace. Utility Model Content

[0003] The utility model aims to overcome the deficiencies in the prior art and provides a thermocouple for long-distance use in a high-temperature furnace.

[0004] The technical purpose of the utility model is achieved through the following technical solutions.

[0005] A thermocouple used in a high-temperature furnace at a long distance comprises a temperature transmission head, a connection structure and a temperature measurement structure, wherein:

[0006] The temperature transmission meter head is connected to the temperature measuring structure through a connecting structure, and a fire retardant layer is coated on the outer side of the connecting structure; the temperature transmission meter head is installed in a mounting structure far away from the high-temperature furnace, and the mounting structure includes a supporting frame, a mounting frame and a mounting plate, the mounting frame is arranged on the supporting frame, the mounting plate adopts a plate structure with an inverted L-shaped cross section, a U-shaped opening is opened on the upper surface of the mounting plate, the temperature transmission meter head is arranged at the U-shaped opening, and the side wall of the mounting plate is installed on the mounting frame through a clamp and a nut.

[0007] In the technical solution of the utility model, the temperature measuring structure comprises a high temperature resistant protection tube and a temperature measuring core, and the temperature measuring core is arranged in the high temperature resistant protection tube.

[0008] In the technical solution of the utility model, the high temperature resistant protection tube adopts a high temperature resistant metal structure or a corundum structure.

[0009] In the technical solution of the utility model, the temperature measuring core adopts an armored thermocouple.

[0010] In the technical solution of the utility model, a mounting flange is arranged at the connection point between the connection structure and the temperature measuring structure.

[0011] In the technical solution of the utility model, a temperature signal transmission interface is formed on the side of the temperature transmission meter head.

[0012] In the technical solution of the utility model, the fireproof and flame retardant layer adopts a fireproof and flame retardant sleeve, and the fireproof and flame retardant sleeve is directly sleeved on the outside of the connecting structure to form the fireproof and flame retardant layer.

[0013] In the technical solution of the utility model, a support frame is arranged between the high-temperature furnace and the mounting structure.

[0014] In the technical solution of the utility model, the column is connected to the support frame in the vertical direction, and the connection structure of the fire retardant layer is arranged to pass through the through hole of the support frame to connect the temperature transmission meter head.

[0015] The beneficial effects of the utility model are as follows: the temperature transmission meter head is installed on the installation structure away from the furnace cover of the calcium carbide furnace by using the extended connection structure, effectively avoiding the influence of the furnace cover or furnace body of the high-temperature furnace; the temperature transmission meter head is plugged into the U-shaped opening of the mounting plate, so that the thermocouple can be directly removed from the mounting plate when not in use; the mounting plate is installed on the mounting frame using clamps and nuts to facilitate the adjustment of the relative height of the mounting plate on the mounting frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a thermocouple of the utility model.

[0017] Figure 2 It is a partially enlarged schematic diagram of the structure of the thermocouple mounting frame in the utility model.

[0018] Figure 3 It is a schematic diagram of the structure of the thermocouple of the utility model in use state.

[0019] In the figure: 1 is the temperature transmission head, 2 is the temperature signal transmission interface, 3 is the connection structure, 4 is the fire retardant layer, 5 is the temperature measurement structure, 6 is the mounting flange, 7 is the mounting frame, 8 is the mounting plate, 9 is the support frame, 10 is the clamp, 11 is the U-shaped opening, 12 is the nut, 13 is the column, 14 is the calcium carbide furnace, 15 is the heating device, and 16 is the temperature measurement installation port.

[0020] For ordinary technicians in this field, other relevant drawings can be obtained based on the above drawings without any creative work. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described below through specific embodiments.

[0022] like Figures 1 to 3 As shown, taking the calcium carbide furnace as an example, a temperature measuring installation port is set on the furnace cover of the calcium carbide furnace for installing thermocouples and heating devices. Since the area and volume of the furnace cover are basically fixed, and the installation of the heating device requires a relatively large area and volume, it is inevitable or extremely easy to cause the temperature measuring installation port and the heating device to be very close. In this way, if the thermocouple (thermocouple head) is directly installed at the temperature measuring installation port, it is bound to cause the thermocouple head and the heating device to be too close. During use, the excessively high temperature at the furnace cover, the fire on the furnace cover, the high current of the heating device, etc. will affect the thermocouple installed at the furnace cover, thereby affecting the temperature collection and display.

[0023] To this end, a thermocouple used in a high-temperature furnace at a long distance includes a temperature transmission head 1, a connection structure 3 and a temperature measurement structure 5, wherein:

[0024] A temperature signal transmission interface 2 is formed on the side of the temperature transmission meter head 1, which is used to transmit the temperature signal obtained by the temperature transmission meter head 1 to the display system. The temperature transmission meter head 1 is connected to the temperature measuring structure 5 through the connection structure 3, and the fire retardant layer 4 is coated on the outside of the connection structure 3; the temperature measuring structure 5 includes a high-temperature resistant protective tube and a temperature measuring core, and the temperature measuring core is arranged in the high-temperature resistant protective tube. The high-temperature resistant protective tube adopts a high-temperature resistant metal structure or a corundum structure, and the temperature measuring core adopts an armored thermocouple. Here, the connection structure 3 adopts the connection structure of the previous thermocouple, such as a protective sleeve and an anti-leakage device, which is extended in the length direction. At the same time, the fire retardant layer 4 adopts a fire retardant sleeve, and the fire retardant sleeve is directly sleeved on the outside of the connection structure 3 to form a fire retardant layer. Taking into account the operating temperature of calcium carbide furnace or other high-temperature furnace, the fire-retardant casing is selected with an operating temperature of -75-350℃, an instantaneous temperature resistance of up to 1600℃, and a rated voltage of 7-25KV. It has the functions of fireproof, flame retardant, heat insulation, insulation, anti-aging, anti-molten steel splashing, waterproof, oil-proof and acid and alkali resistance. It is purchased from China Electric New Materials.

[0025] After extending the length of the connecting structure 3 and setting a fire retardant layer 4 on its outer side, a mounting flange 6 is set at the connection point between the connecting structure 3 and the temperature measuring structure 5 for installing the thermocouple on the cover of the calcium carbide furnace, that is, installing the thermocouple as a whole at the temperature measuring mounting port 16.

[0026] The temperature transmission meter head 1 is installed at the installation structure away from the cover of the calcium carbide furnace. The installation structure includes a support frame 9, a mounting frame 7 and a mounting plate 8. The mounting frame 7 is arranged on the support frame 9. The mounting plate 8 adopts a plate structure with an inverted L-shaped cross-section. A U-shaped opening 11 is opened on the upper surface of the mounting plate 8. The temperature transmission meter head 1 is arranged at the U-shaped opening 11. The side wall of the mounting plate 8 is installed on the mounting frame 7 through a clamp 10 and a nut 12.

[0027] In practice, it is chosen to connect the column in the vertical direction to the support frame so that the support frame can isolate or reduce the influence of the calcium carbide furnace cover or furnace body on temperature measurement, transmission or display, such as setting a connection structure 3 of the fire-retardant layer 4 through the through hole of the support frame to connect the temperature transmission head 1.

[0028] By adopting the technical solution of this embodiment, the temperature transmission meter head 1 is installed at the U-shaped opening of the mounting frame 7 by using the extended connection structure 3, so that the temperature transmission meter head 1 is installed away from the furnace cover of the calcium carbide furnace to avoid being affected. The mounting plate 8 is installed on the mounting frame 7 by using the clamp 10 and the nut 12, so as to facilitate the adjustment of the relative height of the mounting plate 8 on the mounting frame 7.

[0029] For ease of explanation, spatial relative terms such as "upper", "lower", "left", "right" and the like are used in the embodiments to illustrate the relationship between an element or feature shown in the figure and another element or feature. It should be understood that, in addition to the orientation shown in the figure, spatial terms are intended to include different orientations of the device in use or operation. For example, if the device in the figure is inverted, the element described as being "under" other elements or features will be positioned "on" other elements or features. Therefore, the exemplary term "lower" can include both upper and lower orientations. The device can be positioned in other ways (rotated 90 degrees or located in other orientations), and the spatial relative description used here can be interpreted accordingly. Moreover, relational terms such as "first" and "second" are only used to distinguish one from another component with the same name, and do not necessarily require or imply that there is any such actual relationship or order between these components.

[0030] The above is a detailed description of the utility model, but the above content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A thermocouple for long-distance use in a high-temperature furnace, characterized in that: It includes a temperature transmission meter head, a connection structure and a temperature measurement structure, wherein: The temperature transmission meter head is connected to the temperature measuring structure through a connecting structure, and a fire retardant layer is coated on the outer side of the connecting structure; the temperature transmission meter head is installed in a mounting structure far away from the high-temperature furnace, and the mounting structure includes a supporting frame, a mounting frame and a mounting plate, the mounting frame is arranged on the supporting frame, the mounting plate adopts a plate structure with an inverted L-shaped cross section, a U-shaped opening is opened on the upper surface of the mounting plate, the temperature transmission meter head is arranged at the U-shaped opening, and the side wall of the mounting plate is installed on the mounting frame through a clamp and a nut.

2. A thermocouple for long-distance use in a high-temperature furnace according to claim 1, characterized in that: A mounting flange is arranged at the place where the connecting structure and the temperature measuring structure are connected.

3. The thermocouple for long-distance use in a high-temperature furnace according to claim 1, characterized in that: A temperature signal transmission interface is formed on the side of the temperature transmission meter head.

4. The thermocouple for long-distance use in a high-temperature furnace according to claim 1, characterized in that: The fireproof and flame retardant layer adopts a fireproof and flame retardant sleeve, which is directly sleeved on the outside of the connecting structure to form a fireproof and flame retardant layer.

5. The thermocouple for long-distance use in a high-temperature furnace according to claim 1, characterized in that: A support frame is provided between the high temperature furnace and the mounting structure.

6. A thermocouple for long-distance use in a high-temperature furnace according to claim 5, characterized in that: The column is connected to the support frame in the vertical direction, and the connection structure of the fire retardant layer is arranged to pass through the through hole of the support frame to connect the temperature transmission head.

7. A thermocouple for long-distance use in a high-temperature furnace according to any one of claims 1 to 6, characterized in that: The temperature measuring structure comprises a high temperature resistant protection tube and a temperature measuring core body, and the temperature measuring core body is arranged in the high temperature resistant protection tube.

8. A thermocouple for long-distance use in a high-temperature furnace according to claim 7, characterized in that: The high temperature resistant protective tube adopts a high temperature resistant metal structure or a corundum structure.

9. A thermocouple for long-distance use in a high-temperature furnace according to claim 7, characterized in that: The temperature measuring core adopts armored thermocouple.

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