Heat insulation mechanism of heat flux sensor

Abstract

The utility model discloses a heat insulation mechanism of a heat flux sensor, which is characterized by further comprising an inner shell arranged in an outer shell and a protection structure arranged in the inner shell and used for protecting and insulating a sensor element, the protection structure comprises a fixing frame installed on the inner shell and a heat insulation part which is installed on the fixing frame and clamps the sensor element in the middle. According to the utility model, through the arrangement of the protection structure, the sensor element is surrounded and protected by the heat insulation piece, so that the heat insulation effect on the sensor element is realized, and the damage of the sensor element caused by direct conduction of external high temperature to the sensor element is avoided; the sealing joints are arranged on the outer shell and the inner shell and used for connecting the sensor element with a thermocouple or a thermopile, the measured temperature can be transmitted to the sensor element and then is output through a sensor element signal, meanwhile, the good sealing performance can effectively isolate hot air, and the hot air is prevented from entering the outer shell and the inner shell to directly affect the sensor element.

Description

Technical Field

[0001] The utility model relates to the technical field of sensors, in particular to a heat flux sensor heat insulation mechanism. Background Art

[0002] A heat flux sensor is used to solve the problem that when there is a difference between the ambient temperature and the process temperature, a slight temperature difference is generated when heat flows through the heat flux sensor. This temperature gradient is proportional to the heat flow. The heat flux sensor contains thermocouples or thermopiles and can record heat flow and temperature simultaneously.

[0003] However, the existing heat flux sensors have a limited applicable range for the detection environment. Especially for the measurement in some special tanks, the internal temperature can reach several hundred degrees. If the heat flux sensor and the thermocouple or thermopile are in the same environment for detection, at high temperatures, some sensor elements inside the heat flux sensor cannot continuously work at high temperatures and are easily damaged by high temperatures, resulting in the sensor elements being unable to work properly. Therefore, a heat flux sensor heat insulation mechanism is proposed. Content of the Utility Model

[0004] The main purpose of the utility model is to provide a solution that can effectively solve the problems in the background art.

[0005] To achieve the above purpose, the technical solution adopted by the utility model is: a heat flux sensor heat insulation mechanism, including an outer shell, characterized in that: it further includes an inner shell installed in the outer shell, and a protection structure arranged in the inner shell for protecting and insulating the sensor elements. The protection structure includes a fixing frame installed on the inner shell and a heat insulation member installed on the fixing frame and clamping the sensor elements in the middle.

[0006] Preferably, the outer shell and the inner shell are metal boxes with a hollow structure.

[0007] Preferably, heat insulation layers are provided on the inner sides of the outer shell and the inner shell for insulating the sensor elements.

[0008] Preferably, a cover plate and magnetic attraction blocks for facilitating the installation and connection of the outer shell are installed on the outer shell, and sealing joints for facilitating cable connection are also installed on the outer shell and the inner shell.

[0009] Preferably, a bracket for installing the inner shell is further provided in the outer shell.

[0010] Preferably, the heat insulation member is selected from high-temperature-resistant ceramic sheets.

[0011] Preferably, adjusting bolts are installed on the fixing frame, and a limiting plate is movably connected to one end of the adjusting bolts.

[0012] Preferably, a flexible heat insulation pad is provided on the limiting plate.

[0013] Preferably, a box door is installed on the inner shell.

[0014] The utility model has the following beneficial effects: through the arrangement of the protection structure, the sensor element is surrounded and protected by the heat insulation member, so as to play a heat insulation role for the sensor element, and avoid the direct conduction of the external high temperature to the sensor element, resulting in the damage of the sensor element;

[0015] Through the arrangement of the fixing frame, the heat insulation member and the sensor element can be quickly installed on the shell, and the installation is convenient;

[0016] Through the arrangement of the heat insulation layer and the heat insulation member, a multi-stage heat insulation protection is formed for the sensor element, which can effectively block heat and ensure that the sensor element can work normally;

[0017] Through the arrangement of the magnetic attraction block, the installation of the outer shell is facilitated. The outer shell can be quickly assembled on the tank body only by the magnetic attraction installation method, or can be fixed on a separate rack through the magnetic attraction block, and the operation is simple and convenient;

[0018] Through the arrangement of the adjusting bolt, the tightness of the installation of the heat insulation member and the sensor element can be adjusted; through the arrangement of the flexible heat insulation pad, it is avoided that the limiting plate directly presses on the surface of the heat insulation member or the sensor element, which has a buffering and protecting effect and can also play a heat insulation role, and avoids the direct contact between the limiting block and the sensor element to conduct heat;

[0019] Through the arrangement of the sealing joints on the outer shell and the inner shell, which are used for connecting the sensor element with the thermocouple or the thermopile, the measured temperature can be transmitted to the sensor element and then output through the sensor element signal. At the same time, the good sealing performance can effectively isolate the hot gas and avoid the hot gas from entering the outer shell and the inner shell and directly affecting the sensor element. Description of the Drawings

[0020] Figure 1 is the structural schematic diagram of the utility model;

[0021] Figure 2 is the sectional structural schematic diagram of the utility model;

[0022] Figure 3 is the structural schematic diagram of the inner shell in the utility model;

[0023] Figure 4 is the structural schematic diagram at the fixing frame in the utility model;

[0024] Figure 5 is the partial sectional structural schematic diagram of the outer shell and the inner shell in the utility model.

[0025] Legend: 1. Outer housing; 2. Inner housing; 3. Heat insulation layer; 4. Bracket; 5. Fixing frame; 6. Heat insulation member; 7. Sensor element; 8. Magnetic attraction block; 9. Sealing joint; 10. Cover plate; 11. Box door; 12. Adjusting bolt; 13. Limiting plate; 14. Heat insulation pad. Detailed implementation manners

[0026] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific implementation manners.

[0027] As Figures 1-5 shown, a heat flux sensor heat insulation mechanism includes an outer housing 1, and is characterized in that: it further includes an inner housing 2 installed in the outer housing 1 and a protection structure arranged in the inner housing 2 for protecting and insulating the sensor element 7. The protection structure includes a fixing frame 5 installed on the inner housing 2 and a heat insulation member 6 installed on the fixing frame 5 and clamping the sensor element 7 in the middle. Through the setting of the protection structure, the heat insulation member 6 is used to surround and protect the sensor element 7, so as to play a heat insulation role for the sensor element 7 and prevent the high temperature from the outside from directly conducting to the sensor element 7 and causing damage to the sensor element 7; through the setting of the fixing frame 5, the heat insulation member 6 and the sensor element 7 can be quickly installed on the housing, which is convenient for installation.

[0028] In one embodiment, the outer housing 1 and the inner housing 2 are metal boxes, and there is a hollow structure in the middle. Through the setting of the outer housing 1 and the inner housing 2, the sensor element 7 is prevented from being directly exposed outside, playing a protective role for it.

[0029] In one embodiment, a heat insulation layer 3 for insulating the sensor element 7 is provided on the inner sides of the outer housing 1 and the inner housing 2. A fixing frame 5 for fixing the heat insulation member 6 is installed on the inner housing 2. The heat insulation member 6 is selected from high-temperature resistant ceramic sheets. Through the setting of the heat insulation layer 3 and the heat insulation member 6, a multi-stage heat insulation protection is formed for the sensor element 7, which can effectively block heat and ensure that the sensor element 7 can work normally.

[0030] In one embodiment, a cover plate 10 and a magnetic attraction block 8 facilitating the installation and connection of the outer housing 1 are mounted on the outer housing 1. Sealing joints 9 facilitating the connection of cables are also mounted on the outer housing 1 and the inner housing 2. Through the arrangement of the magnetic attraction block 8, the installation of the outer housing 1 is facilitated. The outer housing 1 can be quickly assembled on the tank body only by the magnetic attraction installation method, or can be fixed on a separate rack through the magnetic attraction block 8, and the operation is simple and convenient; through the arrangement of the sealing joints 9, the cables of the sensor element 7 and the thermocouple or thermopile can be easily connected to the tank body, and at the same time, the sealing performance is good; by arranging the sealing joints 9 on the outer housing 1 and the inner housing 2 for connecting the sensor element 7 with the thermocouple or thermopile, the measured temperature can be transmitted to the sensor element 7 and then output through the signal of the sensor element 7. At the same time, the good sealing performance can effectively isolate the hot air and prevent the hot air from entering the outer housing 1 and the inner housing 2 and directly affecting the sensor element.

[0031] In one embodiment, a bracket 4 for installing the inner housing 2 is further included in the outer housing 1. The bracket 4 can be installed on the outer housing 1 by welding or by screws, and the inner housing 2 can be installed on the bracket 4 by screws.

[0032] In one embodiment, an adjusting bolt 12 is mounted on the fixing frame 5. One end of the adjusting bolt 12 is movably connected with a limiting plate 13, and a flexible heat insulation pad 14 is provided on the limiting plate 13. Through the arrangement of the adjusting bolt 12, it can be used to adjust the tightness of the installation of the heat insulation member 6 and the sensor element 7; through the arrangement of the flexible heat insulation pad 14, it is avoided that the limiting plate 13 directly presses on the surface of the heat insulation member 6 or the sensor element 7, which has a buffering and protecting effect, and can also play a heat insulation role, preventing the limiting block 13 from directly contacting the sensor element 7 and conducting heat.

[0033] In one embodiment, a box door 11 is mounted on the inner housing 2. Through the arrangement of the box door 11, the installation of the heat insulation member 6 and the sensor element 7 is facilitated.

[0034] When assembling the utility model, first, one end of the lead-out cable on the sensor element is passed through the sealing joints 9 on the inner shell 2 and the outer shell 1 to pass through the outer shell 1, and then the thermal insulation 6 at the bottom, the sensor element 7 in the middle and the thermal insulation 6 on the upper layer are fixedly installed on the corresponding fixing frame 5 in turn. When fixing, the adjusting bolt 12 is rotated, and the adjusting bolt 12 and the fixing frame 5 threadedly cooperate to move downward until the thermal insulation pad 14 is driven to press the thermal insulation 6 or the sensor element 7, and then the box door 11 on both sides of the inner shell 2 is closed, and then the inner shell 2 is fixedly installed on the bracket 4 in the outer shell 1, and then the cover plate 10 is installed on the outer shell 1 by bolts, and then the magnetic block 8 is installed on the outer shell 1 by bolts. The outer shell 1 can be directly fixed to the tank body by the magnetic block 8, and can also be fixed to a separate frame by the magnetic block 8. Finally, the lead-out cable is connected to the thermocouple or thermopile in the tank body through the connecting port provided on the tank body.

[0035] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A heat flux sensor insulation mechanism, comprising an outer shell (1), characterized in that: It also includes an inner shell (2) mounted in the outer shell (1) and a protective structure arranged in the inner shell (2) for protecting and heat-insulating the sensor element, wherein the protective structure includes a fixing frame (5) mounted on the inner shell (2) and a heat insulating member (6) mounted on the fixing frame (5) and sandwiching the sensor element.

2. A heat flux sensor insulation mechanism according to claim 1, characterized in that: The outer shell (1) and the inner shell (2) are metal boxes with hollow structures.

3. A heat flux sensor insulation mechanism according to claim 1, characterized in that: A heat insulating layer (3) is provided on the inner side of the outer shell (1) and the inner shell (2) for insulating the sensor element from heat.

4. The heat flux sensor insulation mechanism according to claim 1, characterized in that: The outer shell (1) is provided with a cover plate (10) and a magnetic block (8) for facilitating installation and connection of the outer shell (1), and the outer shell (1) and the inner shell (2) are also provided with a sealing joint (9) for facilitating cable connection.

5. The heat flux sensor insulation mechanism according to claim 1, characterized in that: It also includes a bracket (4) arranged in the outer shell (1) and used for mounting the inner shell (2).

6. A heat flux sensor insulation mechanism according to claim 1, characterized in that: The thermal insulation member (6) is selected from high temperature resistant ceramic sheets.

7. The heat flux sensor insulation mechanism according to claim 1, characterized in that: An adjusting bolt (12) is mounted on the fixing frame (5), and one end of the adjusting bolt (12) is movably connected to a limiting plate (13).

8. A heat flux sensor insulation mechanism according to claim 7, characterized in that: A flexible heat-insulating pad (14) is provided on the limiting plate (13).

9. A heat flux sensor insulation mechanism according to claim 1, characterized in that: A box door (11) is installed on the inner shell (2).

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