Heat dissipation structure of gas detection device for high-temperature furnace

Abstract

The utility model provides a kind of heat dissipation structure of gas detection equipment for high temperature furnace belongs to gas detection technical field, and it includes: straight insertion pipe, first flange is welded on straight insertion pipe, first flange is assembled on the outer wall of high temperature furnace, the end of straight insertion pipe is equipped with sensor assembly;Multi-joint heat dissipation assembly is detachably connected between straight insertion pipe and gas detection equipment by the mode of screw thread connection, temperature in high temperature furnace is attenuated to the temperature at gas detection equipment is within preset target temperature range by the combination heat conduction of multiple joints in multi-joint heat dissipation assembly. Advantage: through the combination of flange and multi-joint combination in multi-joint heat dissipation assembly, realize heat dissipation, control the temperature at gas detection equipment within preset target temperature range, provide reliable temperature guarantee for the stable operation of gas detection equipment;Since adopting multi-joint combination form, shorten the length design of straight insertion pipe, overall structure is simple, and installation difficulty is reduced.

Description

Technical Field

[0001] This utility model relates to the field of gas detection technology, and in particular to a heat dissipation structure for a gas detection device for a high-temperature furnace. Background Technology

[0002] Gas detection equipment is a device that detects gas concentration and converts the results into electronic signals. It plays a crucial role in many industrial manufacturing fields, especially in the detection of gases inside industrial equipment such as high-temperature furnaces. In high-temperature industrial production, the internal temperature of a high-temperature furnace is typically between 160℃ and 200℃, or even higher. However, the electronic components in gas detection equipment are highly sensitive to temperature; excessively high temperatures can severely affect their performance and lifespan. Therefore, to ensure the stable operation and accurate detection of gas detection equipment, the temperature transferred from the furnace to the gas detection equipment must be strictly controlled within a certain range.

[0003] Currently, most gas detection devices used in high-temperature furnaces adopt a single linear design. These linear gas detection devices are typically inserted into the furnace via a straight insertion tube. If the insertion tube is too long, it increases equipment cost and makes installation more difficult. Furthermore, an excessively long insertion tube causes the detector body to be set too high, making readings difficult and raising the center of gravity, increasing the risk of breakage or operational instability. In addition, an excessively long insertion tube also affects the device's appearance and is detrimental to the overall layout of the production environment. Utility Model Content

[0004] To solve the above technical problems, this utility model provides a heat dissipation structure for a gas detection device for a high-temperature furnace.

[0005] The technical problem solved by this utility model can be achieved by the following technical solution:

[0006] A heat dissipation structure for a gas detection device for a high-temperature furnace includes:

[0007] A straight insertion tube, on which a first flange is welded, is inserted into the high-temperature furnace through a pre-reserved detection port on the high-temperature furnace. The first flange is mounted on the outer wall of the high-temperature furnace, and a sensor assembly is installed at the end of the straight insertion tube.

[0008] A multi-connector heat dissipation assembly is detachably connected between the straight-insertion tube and the gas detection device via a threaded connection. The temperature inside the high-temperature furnace is attenuated through the combined heat conduction of multiple connectors in the multi-connector heat dissipation assembly, so that the temperature at the gas detection device is within a preset target temperature range.

[0009] Preferably, the multiple connectors in the multi-connector heat dissipation assembly are a combination of metal connectors, a combination of non-metal connectors, or a combination of metal connectors and non-metal connectors.

[0010] Preferably, the straight-insertion tube has a first external thread at one end near the multi-connector heat dissipation assembly, and the gas detection device has a first internal thread;

[0011] The multi-connector heat dissipation assembly includes:

[0012] The first connector has a second internal thread that mates with the first external thread, and the first connector also has a second external thread;

[0013] The second connector has a third internal thread that mates with the second external thread, and a fourth internal thread.

[0014] The third connector is provided with a third external thread that mates with the fourth internal thread, and the third connector is also provided with a fourth external thread;

[0015] The fourth connector is provided with a fifth internal thread that mates with the fourth external thread and a fifth external thread that mates with the first internal thread.

[0016] Preferably, the multi-connector heat dissipation assembly further includes:

[0017] The fifth and sixth connectors are sequentially disposed between the first and second connectors. The fifth connector is provided with a sixth internal thread that mates with the second external thread, and the second connector is also provided with a sixth external thread. The sixth connector is provided with a seventh internal thread that mates with the sixth external thread and a seventh external thread that mates with the third internal thread.

[0018] Preferably, a sealing gasket is provided between the second connector and the third connector.

[0019] Preferably, the surfaces of multiple connectors in the multi-connector heat dissipation assembly are provided with a heat-insulating coating.

[0020] Preferably, a heat sink is also fitted onto the straight insertion tube, and the heat sink is located between the first flange and the multi-joint heat dissipation assembly.

[0021] Preferably, the heat sink is a second flange.

[0022] Preferably, a locking screw is threaded onto the fifth connector, and the end of the locking screw abuts against the outer wall of the portion of the first connector that is inserted into the fifth connector.

[0023] Preferably, the locking screw is an internal hexagon locking screw.

[0024] The advantages or beneficial effects of this utility model's technical solution are as follows:

[0025] This invention achieves heat dissipation by combining a flange with a multi-connector heat dissipation assembly, thereby controlling the temperature at the gas detection equipment within a preset target temperature range. This provides reliable temperature protection for the stable operation of the gas detection equipment and extends its service life. Due to the use of a multi-connector combination, the length of the straight-insertion pipe is shortened, resulting in a simpler overall structure and reduced installation difficulty. Furthermore, the connector combination configuration of the heat dissipation assembly can be flexibly adjusted according to actual needs. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the heat dissipation structure of the gas detection device for a high-temperature furnace in a preferred embodiment 1 of this utility model.

[0027] Figure 2 This is a structural breakdown diagram of the heat dissipation structure of the gas detection device for a high-temperature furnace, as shown in a preferred embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the heat dissipation structure of the gas detection device for a high-temperature furnace in the preferred embodiment 2 of this utility model. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0031] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0032] Example 1

[0033] In a preferred embodiment of this utility model, based on the above-mentioned problems existing in the prior art, a heat dissipation structure for a gas detection device for a high-temperature furnace is provided, such as... Figure 1 As shown, it includes:

[0034] A straight insertion tube 2 is provided, with a first flange 3 welded onto it. The straight insertion tube 2 is inserted into the high-temperature furnace through a pre-reserved detection port on the high-temperature furnace. The first flange 3 is mounted on the outer wall of the high-temperature furnace. A sensor assembly 1 is installed at the end of the straight insertion tube 2.

[0035] The multi-connector heat dissipation assembly 4 is detachably connected between the straight insertion tube 2 and the gas detection device 5 via a threaded connection. The temperature inside the high-temperature furnace is attenuated by the combined heat conduction of multiple connectors in the multi-connector heat dissipation assembly 4, so that the temperature at the gas detection device 5 is within the preset target temperature range.

[0036] Specifically, existing gas detection equipment typically uses a straight-insertion tube inserted into a high-temperature furnace. If the tube is too short, heat from the furnace will be rapidly conducted to the gas detection equipment, causing the temperature there to be too high. This affects the performance and stability of the electronic components of the gas detection equipment, thereby impacting its accurate detection and stable operation. If the tube is too long, although it can control the temperature at the gas detection equipment to some extent, it will bring a series of problems, such as increased equipment cost, cumbersome installation process, inconvenient reading, and impact on the overall appearance of the equipment.

[0037] In response to the special heat dissipation requirements of gas detection equipment in high-temperature industrial furnace environments (160℃-200℃, or even higher), this embodiment uses a multi-joint heat dissipation assembly 4 between the straight-insertion tube 2 and the gas detection equipment 5. Based on the principle of mechanical structure and heat conduction attenuation between components, the combination of multiple joints accelerates the rate of heat conduction attenuation, thereby keeping the temperature of the gas detection equipment 5 within the preset target temperature range within a shorter length and extending the service life of the equipment.

[0038] The preset target temperature range is preferably set below 50℃; more preferably, it is controlled below room temperature (i.e., 25℃). Of course, the specific range value can be reasonably set according to the actual use scenario and specific needs.

[0039] Specifically, the gas detection device 5 is inserted into the high-temperature furnace through a straight insertion tube 2. A sensor assembly 1 is installed at the end of the straight insertion tube 2, which is used to monitor the gas conditions inside the high-temperature furnace in real time. A detection port is provided on the high-temperature furnace, and the port is generally assembled using a standard flange to facilitate the installation and replacement of the equipment, thereby improving its versatility and compatibility. The first flange 3 is fixed to the straight insertion tube 2 by welding, with the end of the straight insertion tube 2 inserted into the high-temperature furnace through the detection port, and the first flange 3 is fixedly assembled on the high-temperature furnace.

[0040] The sensor assembly is connected to the upper detector body via a wiring harness.

[0041] The straight-insertion tube 2 and the gas detection device 5 are assembled via a multi-connector heat dissipation assembly 4. The combination of multiple connectors in the multi-connector heat dissipation assembly 4 accelerates the rate of heat conduction attenuation. The multiple connectors are connected by threads, making the gas detection device 5 detachable, which facilitates the installation, maintenance and replacement of the equipment; moreover, compared with a single connector or an integrated structure, the threaded connection can further accelerate the heat conduction attenuation.

[0042] In practical applications, the configuration of the heat dissipation components can be flexibly adjusted according to actual needs.

[0043] In a preferred embodiment, the multiple connectors in the multi-connector heat dissipation assembly 4 are combinations of metal connectors, or combinations of non-metal connectors, or combinations of metal connectors and non-metal connectors.

[0044] Specifically, the combination of multiple connectors in the multi-connector heat dissipation component 4 is diverse. It can be a combination of metal connectors, which utilizes the good thermal conductivity of metal for heat conduction; it can also be a combination of non-metallic connectors, which utilizes the thermal insulation properties of non-metallic materials to reduce heat transfer; or it can be a combination of metal and non-metallic connectors, which fully leverages the advantages of both to achieve more efficient heat dissipation.

[0045] Preferably, the closer to the high-temperature furnace, the more metal joints are used to enhance heat conduction; the farther away from the high-temperature furnace, the more non-metallic joints are used to block heat transfer.

[0046] In a further preferred embodiment, the dimensions of each connector in the multi-connector heat dissipation component 4 are between 20cm and 30cm. This not only meets the requirements for heat conduction attenuation but also allows for effective control of the overall length, making the heat dissipation component more efficient in space utilization and enhancing the integration and stability of the entire system. Furthermore, the standardized size range facilitates mass production and quality control during manufacturing, reducing production costs and improving production efficiency.

[0047] In a preferred embodiment, the straight-insertion tube 2 is provided with a first external thread at one end near the multi-connector heat dissipation assembly 4, and the gas detection device 5 is provided with a first internal thread.

[0048] The multi-connector heat dissipation assembly 4 is composed of multiple connectors connected sequentially, with each connector linked by a thread. For example, as shown... Figure 2 As shown, the specific structure is as follows:

[0049] The first connector 41 is provided with a second internal thread that mates with the first external thread, and the first connector 41 is also provided with a second external thread;

[0050] The fifth connector 42 is provided with a sixth internal thread that mates with the second external thread, and the second connector 42 is also provided with a sixth external thread;

[0051] The sixth connector 43 is provided with a seventh internal thread that mates with the sixth external thread, and the sixth connector 43 is also provided with a seventh external thread;

[0052] The second connector 44 is provided with a third internal thread that mates with the seventh external thread, and the second connector 44 is also provided with a fourth internal thread.

[0053] The third connector 45 is provided with a third external thread that mates with the fourth internal thread, and the third connector 45 is also provided with a fourth external thread.

[0054] The fourth connector 46 is provided with a fifth internal thread that mates with the fourth external thread and a fifth external thread that mates with the first internal thread.

[0055] Among them, the first connector 41, the fifth connector 42, the second connector 44, the third connector 45 and the fourth connector 46 are metal connectors, which utilize the thermal conductivity of metal for heat conduction; the sixth connector 43 is a non-metallic connector, which serves as a heat insulation function.

[0056] It should be noted that this is just one example of a connector combination; in practical applications, fewer or more connectors can be configured as needed.

[0057] In a preferred embodiment, a sealing gasket is provided between the second connector 44 and the third connector 45 to further improve the sealing performance.

[0058] In a preferred embodiment, the surfaces of multiple connectors in the multi-connector heat dissipation assembly 4 are provided with a heat-insulating coating, which effectively reduces the radiative transfer of heat.

[0059] In a preferred embodiment, to prevent loosening between the joints, a locking screw is threaded onto the fifth joint 42. The end of the locking screw abuts against the outer wall of the part where the first joint 41 is inserted into the fifth joint 42, thereby fixing and limiting the position.

[0060] As a preferred option, the locking screw is an internal hexagon locking screw, which has a better tightening effect and is easier to operate.

[0061] In actual use, the temperature near sensor assembly 1 can reach 160-200℃, and the highest temperature below the first flange face 3 welded on the straight insertion tube 2 can reach this extreme value. However, the main body of the gas detection device 5, according to explosion-proof requirements, needs to be cooled to below 50℃, or essentially equivalent to room temperature (ideally 25℃ standard room temperature). Therefore, the section from the straight insertion tube 2 to the gas detection device 5 needs to have its temperature reduced from 160-200℃ to below 50℃.

[0062] Through heat transfer simulation and high-temperature environment experiments, the temperature values ​​of each connecting component in the structure are shown in Table 1 below. This invention successfully controls the temperature of the core electronic component area below 25℃ while ensuring detection accuracy, significantly extending the service life of the equipment.

[0063] Table 1 Temperature values ​​of various connecting components in the structure

[0064] aisle CH1 CH2 CH3 CH4 CH5 CH6 CH7 CH8 Temperature (°C) 198.8 193.6 160.3 80.2 65.8 62.0 23.7 22.3

[0065] Wherein, CH1 represents the surface of sensor assembly 1; CH2 represents the straight insertion tube 2 inside the high-temperature furnace; CH3 represents the inner side of the first flange 3, i.e. the side near the high-temperature furnace; CH4 represents the straight insertion tube 2 on the outer side of the first flange 3; CH5 represents the surface of the first connector 41; CH6 represents the surface of the fifth connector 42; CH7 represents the surface of the second connector 44; and CH8 represents the surface of the fourth connector 46.

[0066] There are four main types of heat dissipation methods:

[0067] Heat dissipation method 1: Flange heat dissipation

[0068] Flanges have the function of dissipating heat to the air, and the larger the flange, the faster the heat dissipation and the greater the temperature drop. Therefore, when selecting flanges, it is advisable to prioritize larger flanges, as they are more conducive to heat dissipation. For example, according to actual test results, when the temperature inside the flange is 160℃, the temperature on the outside of the flange drops rapidly to 80.2℃, with the temperature decreasing by approximately 80℃ through heat dissipation from the flange.

[0069] Heat dissipation method two: heat conduction attenuation between different components

[0070] Heat conduction between different components leads to heat loss, thereby achieving the purpose of cooling. Specifically, this is demonstrated as follows:

[0071] The straight-through tube and the first metal connector 41 are cooled by approximately 15°C in this way. The straight-through tube is made of SUS, and the first connector is made of C3604 brass, both with a plating finish. This method effectively achieves cooling even with different materials and plating.

[0072] When the two metal connectors are made of the same material and have the same surface treatment, the cooling effect is not ideal, and the temperature can only be reduced by about 3.2℃.

[0073] When it is difficult to effectively reduce the temperature, non-metallic materials can be used for rapid cooling. In the experiment, black resin components successfully reduced the temperature on both sides from 62℃ to 23.7℃, a reduction of 38.3℃.

[0074] Heat dissipation method three: heat insulation of different metal media

[0075] Different metals have different thermal conductivity, and this property can be used to achieve the effect of heat insulation and reduce heat transfer.

[0076] Heat dissipation method four: heat insulation through metal surface coating

[0077] Applying a heat-insulating coating to the surface of the metal joint can effectively block the radiative transfer of heat, further improving the heat dissipation effect.

[0078] Therefore, flange heat dissipation is the most effective method, followed by heat dissipation between different materials, with heat dissipation between metals and non-metals being better than heat dissipation between metals.

[0079] Example 2

[0080] In a preferred embodiment of this utility model, a heat dissipation structure for a gas detection device for a high-temperature furnace is provided, such as... Figure 3 As shown, the difference from Embodiment 1 is that a heat sink 6 is added to further reduce the number of connectors.

[0081] The straight insertion tube 2 is also fitted with a heat sink 6, which is located between the first flange 3 and the multi-joint heat dissipation assembly 4.

[0082] In a preferred embodiment, the heat sink 6 is a second flange, which has a simple structure and good heat dissipation effect.

[0083] Preferably, the second flange is assembled with the straight-through pipe 2 by an interference fit.

[0084] In a preferred embodiment, the straight-insertion tube 2 is provided with a first external thread at one end near the multi-connector heat dissipation assembly 4, and the gas detection device 5 is provided with a first internal thread.

[0085] The multi-connector heat dissipation assembly 4 is composed of a first connector 41, a second connector 44, a third connector 45, and a fourth connector 46 connected sequentially, simplifying the structure of the multi-connector heat dissipation assembly 4. The connectors are connected by threads; for example, the specific structure is as follows:

[0086] The first connector 41 is provided with a second internal thread that mates with the first external thread, and the first connector 41 is also provided with a second external thread;

[0087] The second connector 44 is provided with a third internal thread that mates with the second external thread, and the second connector 44 is also provided with a fourth internal thread.

[0088] The third connector 45 is provided with a third external thread that mates with the fourth internal thread, and the third connector 45 is also provided with a fourth external thread.

[0089] The fourth connector 46 is provided with a fifth internal thread that mates with the fourth external thread and a fifth external thread that mates with the first internal thread.

[0090] Through actual testing, the temperature test data of each connecting component in the structure are shown in Table 2 below. The heat dissipation structure, with its double flange design, demonstrates excellent heat dissipation performance.

[0091] Table 2 Temperature values ​​of various connecting components in the structure

[0092] aisle CH1 CH2 CH3 CH4 CH5 Temperature (°C) 196.5 75.2 50.5 37.8 31.5

[0093] Wherein, CH1 represents the surface of sensor assembly 1; CH2 represents the straight insertion tube 2 outside the first flange 3; CH3 represents the surface of the second flange; CH4 represents the surface of the first connector 41; and CH5 represents the surface of the fourth connector 46.

[0094] When the furnace temperature is raised to 200℃, the temperature on the upper side of the first flange after cooling through the double flanges drops by more than 120℃. This shows that the double flanges are more effective at dissipating heat than the single flanges at higher temperatures. After cooling through the second flange, the temperature on the upper side of the flange drops by about 25℃, further reducing the temperature. After the straight pipe 2 and the first connector 41 are connected, the surface temperature of the first connector 41 drops by about 12℃. After the connectors are combined, the temperature drops by about 6℃, which is basically the same as the effect of the single flange.

[0095] This embodiment uses a double flange as an example; however, in practical applications, more heat sinks can be set as needed to accelerate heat conduction attenuation.

[0096] The advantages or beneficial effects of adopting the above technical solution are as follows: by combining the flange with the multi-joint heat dissipation assembly, heat dissipation is achieved, and the temperature at the gas detection equipment is controlled within the preset target temperature range, providing reliable temperature protection for the stable operation of the gas detection equipment and extending the service life of the equipment; due to the use of the multi-joint combination form, the length of the straight insertion pipe is shortened, the overall structure is simple, and the installation difficulty is reduced; in addition, the joint combination configuration of the heat dissipation assembly can be flexibly adjusted according to actual needs.

[0097] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included within the protection scope of the present utility model.

Claims

1. A heat dissipation structure for a gas detection device for a high-temperature furnace, characterized in that, include: A straight insertion tube, on which a first flange is welded, is inserted into the high-temperature furnace through a pre-reserved detection port on the high-temperature furnace. The first flange is mounted on the outer wall of the high-temperature furnace, and a sensor assembly is installed at the end of the straight insertion tube. A multi-connector heat dissipation assembly is detachably connected between the straight-insertion tube and the gas detection device via a threaded connection. The temperature inside the high-temperature furnace is attenuated through the combined heat conduction of multiple connectors in the multi-connector heat dissipation assembly, so that the temperature at the gas detection device is within a preset target temperature range.

2. The heat radiation structure for a gas detection apparatus for a high-temperature furnace according to claim 1, characterized by The multiple connectors in the multi-connector heat dissipation assembly are combinations of metal connectors, or combinations of non-metal connectors, or combinations of metal connectors and non-metal connectors.

3. The heat radiation structure for a gas detection apparatus for a high-temperature furnace according to claim 1, characterized by The straight-insertion tube has a first external thread at one end near the multi-connector heat dissipation assembly, and the gas detection device has a first internal thread. The multi-connector heat dissipation assembly includes: The first connector has a second internal thread that mates with the first external thread, and the first connector also has a second external thread; The second connector has a third internal thread that mates with the second external thread, and a fourth internal thread. The third connector is provided with a third external thread that mates with the fourth internal thread, and the third connector is also provided with a fourth external thread; The fourth connector is provided with a fifth internal thread that mates with the fourth external thread and a fifth external thread that mates with the first internal thread.

4. The heat radiation structure for the gas detection apparatus for a high-temperature furnace according to claim 3, characterized by The multi-connector heat dissipation assembly also includes: The fifth and sixth connectors are sequentially disposed between the first and second connectors. The fifth connector is provided with a sixth internal thread that mates with the second external thread, and the second connector is also provided with a sixth external thread. The sixth connector is provided with a seventh internal thread that mates with the sixth external thread and a seventh external thread that mates with the third internal thread.

5. The heat radiation structure of the gas detection apparatus for a high-temperature furnace according to claim 3 or 4, characterized by A sealing gasket is provided between the second connector and the third connector.

6. The heat radiation structure for a gas detection apparatus for a high-temperature furnace according to claim 1, wherein The surface of multiple connectors in the multi-connector heat dissipation assembly is provided with a heat-insulating coating.

7. The heat radiation structure for a gas detection apparatus for a high-temperature furnace according to claim 1, wherein A heat sink is also fitted onto the straight insertion tube, and the heat sink is located between the first flange and the multi-joint heat dissipation assembly.

8. The heat radiation structure of the gas detection apparatus for a high-temperature furnace according to claim 7, wherein The heat sink is the second flange.

9. The heat dissipation structure of the gas detection device for a high-temperature furnace according to claim 4, characterized in that, The fifth connector is threaded with a stop screw, the end of which abuts against the outer wall of the part where the first connector is inserted into the fifth connector.

10. The heat radiation structure of the gas detection apparatus for a high-temperature furnace according to claim 9, wherein The locking screw is an internal hexagon locking screw.

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