High-temperature-resistant photosensitive resistor sensor device

Abstract

The utility model discloses a high-temperature-resistant photoresistor sensor device, which comprises a photoresistor, a protection assembly is arranged on the outer side of the photoresistor and comprises a stainless steel pipeline and a magnesium oxide powder pipe, the magnesium oxide powder pipe is sleeved on the front periphery of the photoresistor, and the stainless steel pipeline is positioned on the periphery of the magnesium oxide powder pipe. Two leads led out of the photoresistor penetrate through the magnesium oxide powder pipe, the magnesium oxide powder pipe is placed inside the stainless steel pipeline, and magnesium oxide powder is filled between the magnesium oxide powder pipe and the stainless steel pipeline and then is compacted and sealed. Therefore, on the premise that the performance of the sensor is not affected, the stability and durability of the sensor in a high-temperature environment are remarkably improved, the structure of the sensor is simplified, the cost is reduced, the overall performance and reliability of a combustor monitoring system are improved, and the high-temperature-resistant sensor is suitable for various application scenes needing high-temperature-resistant sensors.

Description

Technical Field

[0001] The utility model relates to the technical field of photosensitive sensors, in particular to a high-temperature resistant photosensitive resistor sensor device. Background Technique

[0002] During the operation of a burner, the temperature inside the furnace is usually very high, which poses a severe challenge to the photosensitive resistor sensor for detecting the working state of the burner. A photosensitive resistor sensor is a sensor based on the photoelectric effect, which can judge the working state of the burner by detecting the change of light. However, due to the characteristics of the photosensitive resistor material itself, they are usually difficult to withstand long-term high-temperature exposure, which causes the sensor to be easily damaged in a high-temperature environment, thus affecting the reliability of the monitoring and control system of the burner.

[0003] In the existing technology, to solve this problem, researchers have tried various methods to improve the high-temperature resistance of the photosensitive resistor sensor. For example, some sensors use special high-temperature resistant materials to wrap the photosensitive resistor, or design complex cooling systems to reduce the ambient temperature around the sensor. However, these methods often increase the complexity and cost of the system, and in some cases, they still cannot completely avoid the damage of the sensor under extreme high-temperature conditions. Content of the Utility Model

[0004] Aiming at the deficiencies of the existing technology, the utility model discloses a high-temperature resistant photosensitive resistor sensor device to solve the problems raised in the above background technique.

[0005] To achieve the above object, the utility model provides the following technical solution: A high-temperature resistant photosensitive resistor sensor device, including a photosensitive resistor, a protection component is arranged outside the photosensitive resistor, the protection component includes a stainless steel pipe and a magnesium oxide powder tube, the magnesium oxide powder tube is sleeved on the front periphery of the photosensitive resistor, the stainless steel pipe is located outside the magnesium oxide powder tube, two leads led out from the photosensitive resistor pass through the magnesium oxide powder tube, and at the same time, the magnesium oxide powder tube is placed inside the stainless steel pipe, and magnesium oxide powder is filled and compacted and sealed between the magnesium oxide powder tube and the stainless steel pipe, and the high-temperature protection of the photosensitive resistor sensor is realized by blocking the temperature with magnesium oxide.

[0006] Preferably, an installation seat is arranged at the tail end of the stainless steel pipe, the installation seat includes an installation plate and an installation sleeve, the installation plate is located at the tail end of the installation sleeve, the installation seat is located outside the photosensitive resistor, the installation sleeve is inserted into a through hole inside the tail end of the stainless steel pipe, the installation plate is mutually attached to a panel arranged at the tail end of the stainless steel pipe, and the panel and the installation plate are connected by bolts arranged.

[0007] Preferably, a connecting ring is provided at the front end of the photoresistor. One side of the connecting ring is connected to the front end of the mounting sleeve, and the other side of the connecting ring is connected to the inner end face of the magnesium oxide powder tube.

[0008] Preferably, a fixed spacer is provided at the tail end of the mounting seat. The fixed spacer is spirally installed on the outer wall at the rear side of the photoresistor, and the mounting seat and the photoresistor are isolated by the front end of the fixed spacer.

[0009] Preferably, a pressing plate is provided at the tail end of the fixed spacer, and the fixed spacer is fixed by the threaded rotation of the pressing plate.

[0010] Preferably, a housing is provided inside the front end of the stainless steel pipe. A filling cavity is provided between the housing and the magnesium oxide powder tube. Magnesium oxide powder is filled through the filling cavity, thereby completing the protection of the magnesium oxide powder tube.

[0011] Preferably, a spacer layer is provided at the front end of the photoresistor, and the front end of the photoresistor is protected by the cooperation of the spacer layer and the magnesium oxide powder tube with a clamping sleeve.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 1. In the present utility model, by passing the two leads of the photoresistor through the magnesium oxide powder tube and placing them inside the stainless steel pipe, the stability and reliability of signal transmission are ensured, and good sensing performance can be maintained even in a high-temperature environment.

[0014] 2. In the present utility model, the use of the stainless steel pipe not only provides physical protection but also enhances the structural stability of the entire device, enabling the sensor to maintain a stable working state in a harsh high-temperature environment.

[0015] 3. In the present utility model, magnesium oxide powder is filled and compacted and sealed inside the stainless steel pipe. The filling of magnesium oxide powder not only provides excellent thermal insulation performance, effectively blocks external high temperature, protects the photoresistor from the high-temperature environment, thereby improving the high-temperature resistance performance of the sensor, but also plays a role in dust prevention and corrosion prevention, further optimizing the protection performance of the sensor and extending its service life.

[0016] 4. In the present utility model, through the cooperation of components such as the mounting seat, the connecting ring, and the fixed spacer, the sensor can be conveniently installed in various high-temperature environments, improving its practicability and adaptability. Description of the Drawings

[0017] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model.

[0018] In the accompanying drawings:

[0019] Figure 1 is a schematic structural view of the overall high-temperature resistant photosensitive resistor sensor device of the present utility model;

[0020] Figure 2 is a side sectional view of the stainless steel pipe of the present utility model;

[0021] Figure 3 is a side sectional view of the mounting seat of the present utility model;

[0022] Reference numerals in the figures: 1, photosensitive resistor; 2, magnesium oxide powder tube; 3, magnesium oxide powder; 4, stainless steel pipe; 401, through hole; 402, panel; 5, fixed spacer; 6, pressing plate; 7, mounting seat; 701, mounting plate; 702, mounting sleeve; 8, housing; 9, partition layer; 10, connecting ring. Specific embodiments

[0023] The following is a description of the preferred embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are only for the purpose of illustration and explanation of the present utility model, and are not intended to limit the present utility model.

[0024] Embodiment: As Figures 1 - 3As shown in the figure, a high-temperature resistant photoresistor sensor device includes a photoresistor 1. A protection component is provided outside the photoresistor 1. The protection component includes a stainless steel pipe 4 and a magnesium oxide powder tube 2. The magnesium oxide powder tube 2 is sleeved on the front periphery of the photoresistor 1. The stainless steel pipe 4 is located outside the magnesium oxide powder tube 2. A mounting seat 7 is provided at the tail end of the stainless steel pipe 4. The mounting seat 7 includes a mounting plate 701 and a mounting sleeve 702. The mounting plate 701 is located at the tail end of the mounting sleeve 702. The mounting seat 7 is located outside the photoresistor 1. The mounting sleeve 702 is inserted into a through hole 401 inside the tail end of the stainless steel pipe 4. The mounting plate 701 is in mutual contact with a panel 402 provided at the tail end of the stainless steel pipe 4, and the panel 402 and the mounting plate 701 are connected by bolts provided. A connecting ring 10 is provided at the front end of the photoresistor 1. One side of the connecting ring 10 is connected to the front end of the mounting sleeve 702, and the other side of the connecting ring 10 is connected to the inner end face of the magnesium oxide powder tube 2. A fixed spacer 5 is provided at the tail end of the mounting seat 7. The fixed spacer 5 is spirally installed on the outer wall at the rear side of the photoresistor 1. The mounting seat 7 and the photoresistor 1 are isolated by the front end of the fixed spacer 5. A pressing plate 6 is provided at the tail end of the fixed spacer 5. The fixed spacer 5 is fixed by screwing the pressing plate 6. Two leads led out from the photoresistor 1 pass through the magnesium oxide powder tube 2, and at the same time, the magnesium oxide powder tube 2 is placed inside the stainless steel pipe 4. A housing 8 is provided on the inner side at the front end of the stainless steel pipe 4. There is a filling cavity between the housing 8 and the magnesium oxide powder tube 2. Magnesium oxide powder 3 is filled through the filling cavity to complete the protection of the magnesium oxide powder tube 2, and after filling the space between the magnesium oxide powder tube 2 and the stainless steel pipe 4 with magnesium oxide powder 3, it is compacted and sealed. A spacer layer 9 is provided at the front end of the photoresistor 1. The front end of the photoresistor 1 is protected by the cooperation of the spacer layer 9 and the magnesium oxide powder tube 2 in a clamping manner. By using magnesium oxide to block the temperature, high-temperature protection of the photoresistor 1 sensor is achieved.

[0025] The specific working principle is as follows. First, the photoresistor 1 is wrapped in the magnesium oxide powder tube 2, and this powder tube is located inside the stainless steel pipe 4. The stainless steel pipe 4 provides additional protection. The mounting base 7 fixes the stainless steel pipe 4 through the mounting plate 701 and the mounting sleeve 702, and the connecting ring 10 connects the mounting sleeve 702 and the magnesium oxide powder tube 2; the fixed spacer 5 is fixed to the rear side of the photoresistor 1 through the pressure plate 6, and the rear end of the mounting base 7 is sleeved on the fixed spacer 5 to isolate the mounting base 7 and the photoresistor 1 through the fixed spacer 5; the two leads of the photoresistor 1 pass through the magnesium oxide powder tube 2 and are placed inside the stainless steel pipe 4; on the inner side of the front end of the stainless steel pipe 4, there is a housing 8, and there is a filling cavity between the housing 8 and the magnesium oxide powder tube 2 for filling the magnesium oxide powder 3 to further protect the magnesium oxide powder tube 2; a spacer layer 9 is provided at the front end of the photoresistor 1, which cooperates with the magnesium oxide powder tube 2 to provide protection for the front end of the photoresistor 1; the entire device is placed in the furnace of the burner, and the photoresistor 1 is protected by the protection component outside the photoresistor 1 and the excellent thermal insulation performance of magnesium oxide, thereby significantly improving its stability and durability in a high-temperature environment without affecting the performance of the sensor. This innovative design not only simplifies the structure of the sensor, reduces costs, but also improves the overall performance and reliability of the burner monitoring system.

[0026] Finally, it should be noted that the above are only preferred examples of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high temperature resistant photoresistor sensor device, comprising a photoresistor, characterized in that: A protection component is provided on the outside of the photoresistor, and the protection component includes a stainless steel pipe and a magnesium oxide powder tube. The magnesium oxide powder tube is sleeved on the front periphery of the photoresistor, and the stainless steel pipe is located on the periphery of the magnesium oxide powder tube. Two lead wires led out of the photoresistor pass through the magnesium oxide powder tube. At the same time, the magnesium oxide powder tube is placed inside the stainless steel pipe, and the space between the magnesium oxide powder tube and the stainless steel pipe is filled with magnesium oxide powder and then compacted and sealed. The temperature is blocked by magnesium oxide, so as to achieve high temperature protection for the photoresistor sensor.

2. A high temperature resistant photoresistor sensor device according to claim 1, characterized in that: A mounting seat is provided at the rear end of the stainless steel pipe, and the mounting seat includes a mounting plate and a mounting sleeve. The mounting plate is located at the rear end of the mounting sleeve, and the mounting seat is located outside the photoresistor. The mounting sleeve is inserted into a through hole inside the rear end of the stainless steel pipe. The mounting plate and the panel provided at the rear end of the stainless steel pipe are fitted together, and the panel and the mounting plate are connected by provided bolts.

3. A high temperature resistant photoresistor sensor device according to claim 2, characterized in that: A connecting ring is provided at the front end of the photoresistor, one side of the connecting ring is connected to the front end of the mounting sleeve, and the other side of the connecting ring is connected to the inner end surface of the magnesium oxide powder tube.

4. A high temperature resistant photoresistor sensor device according to claim 3, characterized in that: A fixed spacer is provided at the rear end of the mounting seat, and the fixed spacer is installed on the rear outer wall of the photoresistor. The mounting seat and the photoresistor are isolated by the front end of the fixed spacer.

5. A high temperature resistant photoresistor sensor device according to claim 4, characterized in that: A pressing plate is provided at the rear end of the fixed spacer sleeve, and the fixed spacer sleeve is fixed by the pressing plate.

6. The high temperature resistant photoresistor sensor device according to claim 1, characterized in that: A shell is provided inside the front end of the stainless steel pipe, and a filling cavity is provided between the shell and the magnesium oxide powder tube. The magnesium oxide powder is filled through the filling cavity, thereby completing the protection of the magnesium oxide powder tube.

7. A high temperature resistant photoresistor sensor device according to claim 6, characterized in that: The front end of the photoresistor is provided with a partition, and the front end of the photoresistor is protected by the partition and the magnesium oxide powder tube in cooperation with a sleeve.

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