Temperature detection device for high-temperature tube furnace

Abstract

The invention relates to the technical field of tube furnaces, in particular to a temperature detection device for a high-temperature tube furnace, and solves the problems that when temperature monitoring is carried out on the heating process of an existing high-temperature tube furnace, due to the fact that a heating tube needs to be heated integrally, the temperature outside the heating tube is inconvenient to monitor in an all-around mode, and the temperature detection efficiency is high. The device solves the problems that in the prior art, in the prior art, the monitoring process is prone to being influenced by air flow, and the temperature detection result deviates, the device comprises a heating isolation mechanism and temperature detection mechanisms, a furnace body mechanism is installed on the outer side of the heating isolation mechanism, the three temperature detection mechanisms are installed between the heating isolation mechanism and the furnace body mechanism, and the furnace body mechanism comprises a lower furnace cover. According to the invention, the heating process of the high-temperature tube furnace is subjected to all-dimensional circumferential arrangement, so that multi-point temperature monitoring can be realized, and the heating airflow is subjected to one-way active extraction, so that the interference of external airflow on the temperature detection result can be effectively avoided, and the detection is more accurate.

Description

Technical Field

[0001] The present invention relates to the technical field of tube furnaces, and specifically to a temperature detection device for a high-temperature tube furnace. Background Art

[0002] A high-temperature tube furnace is a high-temperature furnace with an inner liner made of lightweight high-temperature fiber material. The high-temperature tube furnace has an openable inner liner made of lightweight high-temperature fiber material, which is composed of two semi-circular furnace bodies and is convenient to open. The most basic function of the high-temperature tube furnace is to achieve high-temperature heating and sintering of materials; by precisely controlling the temperature inside the furnace chamber, various materials can be subjected to high-temperature treatment, such as sintering, melting, crystallization, etc., so as to improve the physical, chemical, and mechanical properties of the materials. The high-temperature tube furnace has an atmosphere control and treatment function and can introduce different gases (such as inert gases, reducing gases, etc.) to create a specific atmosphere environment to meet the special requirements during the material treatment process. When the high-temperature tube furnace is used to treat materials, it is necessary to monitor the temperature in real time during the heating process. When the temperature of the heating process of the existing high-temperature tube furnace is monitored, since the heating tube needs to be heated integrally, it is not convenient to perform a full-range monitoring of the temperature on the outside of the heating tube, and the monitoring process is easily affected by air flow, resulting in deviation of the temperature detection result. Summary of the Invention

[0003] The purpose of the present invention is to provide a temperature detection device for a high-temperature tube furnace, so as to solve the problem that when the temperature of the heating process of the existing high-temperature tube furnace is monitored, since the heating tube needs to be heated integrally, it is not convenient to perform a full-range monitoring of the temperature on the outside of the heating tube, and the monitoring process is easily affected by air flow, resulting in deviation of the temperature detection result as mentioned in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solutions:

[0005] A temperature detection device for a high-temperature tubular furnace, comprising a heating isolation mechanism and a temperature detection mechanism. The outside of the heating isolation mechanism is equipped with a furnace body mechanism. There are three temperature detection mechanisms installed between the heating isolation mechanism and the furnace body mechanism. The furnace body mechanism includes a lower furnace cover, and the upper end of the lower furnace cover is rotatably connected with an upper furnace cover; the heating isolation mechanism includes two semi-circular heating covers. The outer surface of the semi-circular heating cover is provided with a plurality of heat conduction through grooves, and heating strips are installed inside the heat conduction through grooves. Ventilation gaps are provided between both sides of the semi-circular heating cover and the plurality of heating strips; the temperature detection mechanism includes a ventilation frame. One end of the ventilation frame is equipped with a current collection and exhaust seat. The ventilation frame is composed of a ventilation hollow plate and an arc-shaped diversion pipe. The bottom end of the ventilation hollow plate is provided with a plurality of waist-shaped diversion holes, and temperature monitoring probes are installed inside the waist-shaped diversion holes. A fan box is fixedly installed inside the arc-shaped diversion pipe near one end of the current collection and exhaust seat. A one-way diversion component is installed on one side of the fan box. A hollow diversion ring is installed between the one-way diversion component and the fan box. A liquid injection pipe is installed at the upper end of the hollow diversion ring. A plurality of spray nozzles are provided on one side of the hollow diversion ring. The one-way diversion component includes a conical positioning ring, a plugging cone head, a support spring, a connecting guide post, a ventilation limiting seat, and ventilation holes.

[0006] Preferably, the furnace body mechanism further includes a control box door rotatably connected to the middle of the front end face of the lower furnace cover. Pipe end connection seats are installed inside both ends of the lower furnace cover and the upper furnace cover. A heating pipe is installed between the two pipe end connection seats. One end of one of the pipe end connection seats is fixedly installed with a drive box, and a pressure gauge is fixedly installed on the outside of the other pipe end connection seat.

[0007] Preferably, the heating isolation mechanism further includes a lower isolation frame fixedly connected to the inside of the upper end of the lower furnace cover. An upper isolation frame is installed on the upper end face of the lower isolation frame. The lower furnace cover and the upper furnace cover are respectively fixedly connected to the two semi-circular heating covers through the lower isolation frame and the upper isolation frame.

[0008] Preferably, the number of ventilation hollow plates and arc-shaped diversion pipes in each ventilation frame is three. The three ventilation hollow plates coincide radially with the semi-circular heating cover. The three arc-shaped diversion pipes are linearly arranged along the side of the ventilation hollow plate. The three ventilation frames are linearly arranged along the axis of the semi-circular heating cover. The ventilation hollow plate and the arc-shaped diversion pipe are welded and fixed. The current collection and exhaust seat and the ventilation hollow plate are connected through the arc-shaped diversion pipe.

[0009] Preferably, the arc-shaped diversion pipe is connected to the heat conduction through groove through the waist-shaped diversion hole. The temperature monitoring probe is fixedly connected to the ventilation hollow plate. A thermocouple is provided inside the temperature monitoring probe. The bottom end of the thermocouple penetrates through the temperature monitoring probe and is inserted into the inside of the heat conduction through groove. An electric resistance wire is provided inside the heating strip.

[0010] Preferably, the unidirectional flow guiding assembly is coaxial with the arc-shaped flow guiding pipe, the conical positioning ring is fixedly connected to the arc-shaped flow guiding pipe, the plugging cone head is in fitting contact with the inner wall of one end of the conical positioning ring, one end of the connecting guide post penetrates through the ventilation limiting seat and the support spring and is threadedly connected to the plugging cone head, and the ventilation limiting seat is connected to the plugging cone head through the support spring.

[0011] Preferably, the plurality of ventilation holes are arranged in a circumferential pattern with respect to the axis of the ventilation limiting seat, the flow collecting and exhaust seat is connected to the conical positioning ring through the plurality of ventilation holes, the connecting guide post and the plugging cone head slide linearly back and forth along the axis of the ventilation limiting seat, and a fan blade and a fan motor are provided inside the fan box, and the fan motor is a high-temperature resistant motor.

[0012] Preferably, the bottom end of the liquid injection pipe penetrates through the arc-shaped flow guiding pipe and is connected to a plurality of spray nozzles through a hollow flow guiding ring in a through connection manner, the hollow flow guiding ring is fixedly connected to the arc-shaped flow guiding pipe through the liquid injection pipe, and the spray nozzles are threadedly connected to the hollow flow guiding ring.

[0013] Preferably, the two semi-circular heating covers form a heating sleeve, the plurality of heating strips are arranged in a circumferential pattern with respect to the heating sleeve, and the materials of the two semi-circular heating covers are ceramic fiber.

[0014] Preferably, the materials of the lower furnace cover and the upper furnace cover are both carbon steel, the material of the heating pipe is quartz tube, and the lower furnace cover is connected to the heating pipe through two pipe end connection seats.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] 1. The present invention is provided with electric resistance wires inside the heating strips, so that the electric resistance wires can uniformly heat the materials in the heating pipe under the support of the heating sleeve. The two semi-circular heating covers are isolated by the lower isolation frame and the upper isolation frame. The fan box evacuates the cavity between the semi-circular heating cover and the heating pipe through the arc-shaped flow guiding pipe. A temperature monitoring probe is fixedly installed inside each kidney-shaped flow guiding hole. Through the ventilation gap, the heat conduction through groove and the kidney-shaped flow guiding hole, the air in the cavity between the heating pipe and the two semi-circular heating covers can be successively guided to the inside of the ventilation hollow plate, and then the ventilation hollow plate can transport the hot air flow to the inside of the flow collecting and exhaust seat through the arc-shaped flow guiding pipe. The hot air flow can be output at multiple points through the plurality of kidney-shaped flow guiding holes, and the temperature of the hot air flow on the outer surface of the heating pipe can be monitored in real time in all directions through the thermocouple, effectively avoiding the inaccurate temperature detection result of the temperature monitoring probe caused by the temperature difference inside and outside the heating pipe.

[0017] 2. In the present invention, the plugging cone head is in real-time fitting contact with the conical positioning ring under the elastic support of the connecting guide post, avoiding the influence of external temperature and humidity air flow on the heating uniformity of the heating tube by the semi-circular heating cover. When the hot air flow flows inside the arc-shaped diversion tube, it pushes the plugging cone head to separate from the conical positioning ring. At the same time, cold water is injected into the inside of the hollow diversion ring through the liquid injection pipe. Then, the hollow diversion ring can spray through a plurality of spray nozzles arranged in a circular pattern and uniformly cool the hot air flow between the fan box and the ventilation limiting seat, effectively avoiding the shortening of the service life of the fan box caused by high temperature. Moreover, the plugging cone head can avoid the reverse flow of moisture through the support spring, resulting in unstable heating of the heating strip and the semi-circular heating cover. After the heating of the material is completed, the hot air flow is continuously extracted to achieve rapid cooling of the material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the whole of the present invention;

[0019] Figure 2 is a front view of the whole of the present invention;

[0020] Figure 3 is a schematic structural diagram of the installation structure of the heating tube of the present invention;

[0021] Figure 4 is a schematic structural diagram of the installation structure of the temperature detection mechanism of the present invention;

[0022] Figure 5 is a schematic structural diagram of the installation structure of the ventilation frame of the present invention;

[0023] Figure 6 is a partial sectional structural diagram of the ventilation frame of the present invention;

[0024] Figure 7 is a partial sectional structural diagram of the ventilation hollow plate of the present invention;

[0025] Figure 8 is a sectional structural diagram of the temperature detection mechanism of the present invention;

[0026] Figure 9 is of the present invention Figure 8 an enlarged structural diagram of area A in

[0027] In the figure: 1. Furnace body mechanism; 101. Lower furnace hood; 102. Upper furnace hood; 103. Control box door; 104. Drive box; 105. Pipe end connection seat; 106. Pressure gauge; 107. Heating pipe; 2. Heating isolation mechanism; 201. Lower isolation frame; 202. Upper isolation frame; 203. Semi-circular heating hood; 204. Heating strip; 205. Heat conduction through groove; 206. Ventilation gap; 3. Temperature detection mechanism; 301. Ventilation frame; 302. Current collection and exhaust seat; 303. Ventilation hollow plate; 304. Arc-shaped diversion pipe; 305. Waist-shaped diversion hole; 306. Temperature monitoring probe; 307. Conical positioning ring; 308. Sealing cone head; 309. Support spring; 310. Connecting guide post; 311. Ventilation limit seat; 312. Ventilation hole; 313. Hollow diversion ring; 314. Liquid injection pipe; 315. Spray nozzle; 316. Fan box. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0029] Please refer to Figures 1 to 4 As shown in the figure, an embodiment provided by the present invention is a temperature detection device for a high-temperature tube furnace, including a heating isolation mechanism 2 and a temperature detection mechanism 3. The outside of the heating isolation mechanism 2 is installed with a furnace body mechanism 1. The furnace body mechanism 1 includes a lower furnace hood 101. The upper end of the lower furnace hood 101 is rotatably connected to an upper furnace hood 102. The middle of the front end face of the lower furnace hood 101 is rotatably connected to a control box door 103. Pipe end connection seats 105 are installed on the inner sides of both ends of the lower furnace hood 101 and the upper furnace hood 102. A heating pipe 107 is installed between the two pipe end connection seats 105. The materials of the lower furnace hood 101 and the upper furnace hood 102 are both carbon steel, and the material of the heating pipe 107 is quartz tube. The lower furnace hood 101 and the heating pipe 107 are connected through two pipe end connection seats 105. One end of one of the pipe end connection seats 105 is fixedly installed with a drive box 104, and the outside of the other pipe end connection seat 105 is fixedly installed with a pressure gauge 106. Through the furnace body mechanism 1, it is convenient to protect and install the heating isolation mechanism 2 and the temperature detection mechanism 3, and effectively isolate the high temperature for ventilation.

[0030] Please refer to Figures 2 to 8, the heating isolation mechanism 2 includes two semi-circular heating covers 203. A plurality of heat conduction through grooves 205 are provided on the outer surface of the semi-circular heating cover 203. A heating strip 204 is installed inside the heat conduction through groove 205. An electric resistance wire is provided inside the heating strip 204. Ventilation gaps 206 are provided between both sides of the semi-circular heating cover 203 and the plurality of heating strips 204. An inner lower isolation frame 201 is fixedly installed on the upper end of the lower furnace cover 101. An upper isolation frame 202 is installed on the upper end surface of the lower isolation frame 201. The lower furnace cover 101 and the upper furnace cover 102 are fixedly connected to the two semi-circular heating covers 203 through the lower isolation frame 201 and the upper isolation frame 202 respectively. The two semi-circular heating covers 203 form a heating sleeve. The plurality of heating strips 204 are arranged in a circular pattern with respect to the heating sleeve. The two semi-circular heating covers 203 are made of ceramic fiber, so that the electric resistance wire can uniformly heat the material in the heating tube 107 under the support of the heating sleeve.

[0031] Please refer to Figures 4 to 8 , three temperature detection mechanisms 3 are installed between the heating isolation mechanism 2 and the furnace body mechanism 1. The temperature detection mechanism 3 includes a ventilation frame 301. A current collecting exhaust seat 302 is installed at one end of the ventilation frame 301. The ventilation frame 301 is composed of a ventilation hollow plate 303 and an arc-shaped diversion pipe 304. The number of ventilation hollow plates 303 and arc-shaped diversion pipes 304 in each ventilation frame 301 is three. The three ventilation hollow plates 303 coincide radially with the semi-circular heating cover 203. The three arc-shaped diversion pipes 304 are linearly arranged along the side of the ventilation hollow plate 303. The three ventilation frames 301 are linearly arranged along the axis of the semi-circular heating cover 203. The ventilation hollow plate 303 and the arc-shaped diversion pipe 304 are welded and fixed. The current collecting exhaust seat 302 is connected to the ventilation hollow plate 303 through the arc-shaped diversion pipe 304 in a through manner. The hot air flow can be output at multiple points through a plurality of waist-shaped diversion holes 305;

[0032] A plurality of waist-shaped diversion holes 305 are provided at the bottom end of the ventilation hollow plate 303. A temperature monitoring probe 306 is installed inside the waist-shaped diversion hole 305. The arc-shaped diversion pipe 304 and the heat conduction through groove 205 are connected in a through manner through the waist-shaped diversion hole 305. The temperature monitoring probe 306 is fixedly connected to the ventilation hollow plate 303. A thermocouple is provided inside the temperature monitoring probe 306. The bottom end of the thermocouple penetrates through the temperature monitoring probe 306 and is inserted into the inside of the heat conduction through groove 205. The temperature of the hot air flow on the outer surface of the heating tube 107 can be monitored in real time in all directions through the thermocouple, effectively avoiding the situation where the temperature detection result of the temperature monitoring probe 306 is inaccurate due to the temperature difference inside and outside the heating tube 107;

[0033] An inner side of one end of the arc-shaped diversion pipe 304 close to the current collecting exhaust seat 302 is fixedly provided with a fan box 316. A hollow diversion ring 313 is installed between the one-way diversion assembly and the fan box 316. A liquid injection pipe 314 is installed at an upper end of the hollow diversion ring 313. A plurality of spray nozzles 315 are arranged on one side of the hollow diversion ring 313. A bottom end of the liquid injection pipe 314 penetrates through the arc-shaped diversion pipe 304 and is connected to the plurality of spray nozzles 315 through the hollow diversion ring 313 in a through connection manner. The hollow diversion ring 313 is fixedly connected to the arc-shaped diversion pipe 304 through the liquid injection pipe 314. The spray nozzles 315 are connected to the hollow diversion ring 313 through a threaded connection. Spraying can be carried out through the spray nozzles 315, and uniform cooling operation can be performed on the hot air flow between the fan box 316 and the ventilation limiting seat 311, effectively avoiding the shortening of the service life of the fan box 316 caused by the influence of high temperature.

[0034] Please refer to Figure 8 and Figure 9 , a one-way diversion assembly is installed on one side of the fan box 316. The one-way diversion assembly is coaxial with the arc-shaped diversion pipe 304. The one-way diversion assembly includes a conical positioning ring 307, a plugging cone head 308, a support spring 309, a connecting guide post 310, a ventilation limiting seat 311 and ventilation holes 312. The conical positioning ring 307 is fixedly connected to the arc-shaped diversion pipe 304. The plugging cone head 308 is in a fitting contact with an inner wall of one end of the conical positioning ring 307. One end of the connecting guide post 310 penetrates through the ventilation limiting seat 311 and the support spring 309 and is connected to the plugging cone head 308 through a threaded connection. The ventilation limiting seat 311 is connected to the plugging cone head 308 through the support spring 309. The plurality of ventilation holes 312 are arranged in a circumferential arrangement relative to an axis of the ventilation limiting seat 311. The current collecting exhaust seat 302 is connected to the conical positioning ring 307 through the plurality of ventilation holes 312 in a through connection manner. The connecting guide post 310 and the plugging cone head 308 perform a linear reciprocating sliding along the axis of the ventilation limiting seat 311. Fan blades and a fan motor are arranged inside the fan box 316. The fan motor is a high-temperature resistant motor. The plugging cone head 308 can avoid the unstable heating of the heating strip 204 and the semi-circular heating cover 203 caused by the moisture backflow when the fan box 316 extracts hot air flow. After the heating of the material is completed, continuous extraction operation of the hot air flow is carried out through the fan box 316 to realize the rapid cooling of the material.

[0035] In summary, when the material is heat-treated at high temperature using a high-temperature tube furnace, the lower furnace hood 101 and the upper furnace hood 102 are fixedly connected to the two semi-circular heating hoods 203 through the lower isolation frame 201 and the upper isolation frame 202 respectively. After the power is turned on, the lower furnace hood 101 is connected to the heating tube 107 through the two pipe end connectors 105. The material to be processed is placed inside the heating tube 107. The lower furnace hood 101 and the upper furnace hood 102 are closed and connected by hinges. By extracting air from the inside of the heating tube 107 and monitoring the pressure through the pressure gauge 106, and after the power is turned on, the two semi-circular heating hoods 203 form a heating sleeve. A plurality of heat conduction through grooves 205 arranged in a circular pattern are provided on the outer surface of the heating sleeve. A heating strip 204 is fixedly installed inside each heat conduction through groove 205, and an electric resistance wire is provided inside the heating strip 204, so that the electric resistance wire can uniformly heat the material inside the heating tube 107 under the support of the heating sleeve;

[0036] The two semi-circular heating hoods 203 are isolated by the lower isolation frame 201 and the upper isolation frame 202. Three linearly arranged temperature detection mechanisms 3 are installed between the upper furnace hood 102 and the upper isolation frame 202. Among them, the current collecting exhaust seat 302 and the ventilation hollow plate 303 are connected through the arc-shaped guide pipe 304. The fan box 316 is started, so that the fan box 316 can extract air from the cavity between the semi-circular heating hood 203 and the heating tube 107 through the arc-shaped guide pipe 304;

[0037] Specifically, a plurality of waist-shaped guide holes 305 are provided at the bottom end of the ventilation hollow plate 303, so that the ventilation hollow plate 303 and the heat conduction through groove 205 are connected through the plurality of waist-shaped guide holes 305. A temperature monitoring probe 306 is fixedly installed inside each waist-shaped guide hole 305. When the fan box 316 extracts air, the air in the cavity between the heating tube 107 and the two semi-circular heating hoods 203 can be sequentially guided to the inside of the ventilation hollow plate 303 through the ventilation gap 206, the heat conduction through groove 205 and the waist-shaped guide hole 305. Furthermore, the ventilation hollow plate 303 can transport the hot air flow to the inside of the current collecting exhaust seat 302 through the arc-shaped guide pipe 304. The hot air flow can be output at multiple points through the plurality of waist-shaped guide holes 305. At this time, the temperature of the hot air flow on the outer surface of the heating tube 107 can be monitored in real time through the thermocouple provided inside the temperature monitoring probe 306, effectively avoiding the inaccurate temperature detection result of the temperature monitoring probe 306 caused by the temperature difference inside and outside the heating tube 107;

[0038] A one-way flow guiding component is installed on one side of the hollow flow guiding ring 313. The plugging cone head 308 is in real-time close contact with the conical positioning ring 307 under the elastic support of the connecting guide post 310, avoiding the influence of external temperature and humidity air flow on the heating uniformity of the heating tube 107 by the semi-circular heating cover 203. When the hot air flow flows inside the arc-shaped flow guiding tube 304, it pushes the plugging cone head 308 to separate from the conical positioning ring 307. Then, the connecting guide post 310 drives the plugging cone head 308 to compress the support spring 309 through the guidance of the ventilation limiting seat 311. Thus, the hot air flow can be conveyed to the inside of the current collecting and exhaust seat 302 through the diversion of multiple ventilation holes 312.

[0039] Meanwhile, cold water is injected into the inside of the hollow flow guiding ring 313 through the liquid injection pipe 314. Then, the hollow flow guiding ring 313 can spray through multiple spray nozzles 315 arranged in a circular pattern and uniformly cool the hot air flow between the fan box 316 and the ventilation limiting seat 311, effectively avoiding the shortening of the service life of the fan box 316 due to the influence of high temperature. And the plugging cone head 308 can avoid the reverse flow of moisture through the support spring 309, which may cause unstable heating of the heating strip 204 and the semi-circular heating cover 203. After the heating of the material is completed, the hot air flow is continuously extracted to quickly cool the material.

[0040] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed rights.

Claims

1. A temperature detection device for a high-temperature tube furnace, comprising a heating isolation mechanism (2) and a temperature detection mechanism (3), characterized in that: A furnace body mechanism (1) is installed on the outer side of the heating isolation mechanism (2); three temperature detection mechanisms (3) are installed between the heating isolation mechanism (2) and the furnace body mechanism (1); the furnace body mechanism (1) comprises a lower furnace cover (101); the upper end of the lower furnace cover (101) is rotatably connected to an upper furnace cover (102); the heating isolation mechanism (2) comprises two semicircular heating covers (203); the outer surface of the semicircular heating covers (203) is provided with a plurality of heat-conducting grooves (205); the inner side of the heat-conducting grooves (205) is provided with heating strips (204); ventilation gaps (206) are provided between the semicircular heating covers (203) and the two sides of the plurality of heating strips (204); the temperature detection mechanism (3) comprises a ventilation frame (301); one end of the ventilation frame (301) is provided with a collecting and exhausting seat (302); the ventilation frame (301) is composed of a ventilation hollow plate (303); ) and an arc-shaped flow guide pipe (304), the bottom end of the ventilation hollow plate (303) is provided with a plurality of waist-shaped flow guide holes (305), the inner side of the waist-shaped flow guide holes (305) is installed with a temperature monitoring probe (306), the inner side of the arc-shaped flow guide pipe (304) close to one end of the collecting and exhausting seat (302) is fixedly installed with a fan box (316), one side of the fan box (316) is installed with a one-way flow guide component, and the one-way flow guide component is connected to A hollow guide ring (313) is installed between the fan boxes (316), a liquid injection pipe (314) is installed at the upper end of the hollow guide ring (313), a plurality of spray nozzles (315) are provided on one side of the hollow guide ring (313), and the one-way guide assembly comprises a conical positioning ring (307), a blocking cone head (308), a support spring (309), a connecting guide column (310), a ventilation limit seat (311) and a ventilation hole (312).

2. The temperature detection device for a high temperature tube furnace according to claim 1, characterized in that: The furnace body mechanism (1) further comprises a control box door (103) rotatably connected to the middle part of the front end surface of the lower furnace cover (101); pipe end connection seats (105) are installed on the inner sides of both ends of the lower furnace cover (101) and the upper furnace cover (102); a heating tube (107) is installed between the two pipe end connection seats (105); a driving box (104) is fixedly installed on one end of one of the pipe end connection seats (105); and a pressure gauge (106) is fixedly installed on the outer side of the other pipe end connection seat (105).

3. The temperature detection device for a high temperature tube furnace according to claim 2, characterized in that: The heating isolation mechanism (2) further comprises a lower isolation frame (201) fixedly connected to the inner side of the upper end of the lower furnace cover (101); an upper isolation frame (202) is mounted on the upper end surface of the lower isolation frame (201); the lower furnace cover (101) and the upper furnace cover (102) are fixedly connected to the two semicircular heating covers (203) via the lower isolation frame (201) and the upper isolation frame (202), respectively.

4. The temperature detection device for a high temperature tube furnace according to claim 3, characterized in that: The number of the ventilation hollow plates (303) and the arc-shaped flow guide tubes (304) in each of the ventilation racks (301) is three; the three ventilation hollow plates (303) coincide with the radial direction of the semicircular heating cover (203); the three arc-shaped flow guide tubes (304) are linearly arranged along the side of the ventilation hollow plates (303); the three ventilation racks (301) are linearly arranged along the axis of the semicircular heating cover (203); the ventilation hollow plates (303) and the arc-shaped flow guide tubes (304) are welded and fixed; the collecting and exhausting air seat (302) and the ventilation hollow plates (303) are connected through the arc-shaped flow guide tubes (304).

5. The temperature detection device for a high temperature tube furnace according to claim 4, characterized in that: The arc-shaped flow guide tube (304) is connected to the heat-conducting groove (205) through a waist-shaped flow guide hole (305); the temperature monitoring probe (306) is fixedly connected to the ventilated hollow plate (303); a thermocouple is provided inside the temperature monitoring probe (306); the bottom end of the thermocouple passes through the temperature monitoring probe (306) and is plugged into the inner side of the heat-conducting groove (205); and an electric thermal resistance wire is provided inside the heating strip (204).

6. The temperature detection device for a high temperature tube furnace according to claim 5, characterized in that: The one-way flow guide assembly is coaxial with the arc-shaped flow guide tube (304), the conical positioning ring (307) is fixedly connected to the arc-shaped flow guide tube (304), the blocking cone head (308) is in close contact with the inner wall of one end of the conical positioning ring (307), one end of the connecting guide column (310) passes through the air-permeable limit seat (311) and the support spring (309) and is connected to the blocking cone head (308) by means of a thread, and the air-permeable limit seat (311) is connected to the blocking cone head (308) by means of the support spring (309).

7. The temperature detection device for a high temperature tube furnace according to claim 6, characterized in that: The plurality of ventilation holes (312) are arranged in a circle relative to the axis of the ventilation limit seat (311); the collecting and exhausting seat (302) is connected to the conical positioning ring (307) via the plurality of ventilation holes (312); the connecting guide column (310) and the sealing cone head (308) slide linearly back and forth along the axis of the ventilation limit seat (311); the fan box (316) is provided with fan blades and a fan motor inside, and the fan motor is a high temperature resistant motor.

8. The temperature detection device for a high temperature tube furnace according to claim 7, characterized in that: The bottom end of the injection pipe (314) passes through the arc-shaped flow guide pipe (304) and is connected to a plurality of spray nozzles (315) via a hollow flow guide ring (313); the hollow flow guide ring (313) is fixedly connected to the arc-shaped flow guide pipe (304) via the injection pipe (314); and the spray nozzle (315) is connected to the hollow flow guide ring (313) via threads.

9. The temperature detection device for a high temperature tube furnace according to claim 8, characterized in that: The two semicircular heating covers (203) form a heating sleeve, the plurality of heating strips (204) are arranged in a circle relative to the heating sleeve, and the two semicircular heating covers (203) are made of ceramic fiber.

10. The temperature detection device for a high temperature tube furnace according to claim 9, characterized in that: The lower furnace cover (101) and the upper furnace cover (102) are both made of carbon steel, the heating tube (107) is made of a quartz tube, and the lower furnace cover (101) and the heating tube (107) are connected via two tube end connection seats (105).

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