SF6 gas infrared monitoring sensor

Abstract

The utility model relates to infrared monitoring sensor technical field, and disclose a kind of SF6 gas infrared monitoring sensor, including monitoring sensor shell, its surface is equipped with main detector, inside is equipped with microprocessor, and microprocessor surface is equipped with temperature compensation module.Sensor inside is also equipped with motor, motor rotor coaxial installation first gear, first gear is engaged with second gear, and second gear axle center installs precision lead screw, and precision lead screw surface is screwed infrared light source, and infrared light source surface is equipped with light source module and gas absorption cell.The sensor is driven first gear and second gear engagement transmission by motor, drives precision lead screw to realize infrared light source axial displacement adjustment, can dynamically optimize the optical path length in gas absorption cell, to this match the best absorption efficiency of SF6 gas under different concentration or pressure, effectively avoid the problem of insufficient measurement sensitivity due to fixed optical path design, improve the accuracy and adaptability of SF6 gas infrared monitoring.

Description

Technical Field

[0001] This utility model relates to the field of infrared monitoring sensor technology, specifically to an SF6 gas infrared monitoring sensor. Background Technology

[0002] An infrared monitoring sensor is a high-precision detection device based on the principle of infrared absorption. Its core components employ a specific wavelength infrared light source and a high-sensitivity detector. By measuring the characteristic absorption intensity of infrared light by SF6 molecules and combining it with Lambert-Beer's law, the gas concentration is calculated.

[0003] In existing technologies, traditional sensors for infrared monitoring of SF6 gas typically employ a fixed optical path design. However, since the absorption efficiency of SF6 gas at different concentrations or pressures varies, the fixed optical path design cannot be dynamically adjusted to match the optimal absorption efficiency. This leads to insufficient measurement sensitivity when measuring SF6 gas at different concentrations or pressures, making it difficult to meet actual monitoring needs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this invention provides an SF6 gas infrared monitoring sensor. This sensor solves the problem mentioned in the background art that the absorption efficiency of SF6 gas at different concentrations or pressures varies, and the fixed optical path design cannot be dynamically adjusted to match the optimal absorption efficiency. This leads to insufficient measurement sensitivity when measuring SF6 gas at different concentrations or pressures, making it difficult to meet actual monitoring needs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: an SF6 gas infrared monitoring sensor, comprising:

[0008] A monitoring sensor housing, on the surface of which a main detector is mounted, and inside which a microprocessor is mounted, and on the surface of which a temperature compensation module is mounted;

[0009] The motor is located inside the housing of the monitoring sensor. A first gear is coaxially mounted on the rotor of the motor. A second gear meshes with the upper surface of the first gear. A precision lead screw is mounted on the shaft of the second gear. An infrared light source is screwed onto the surface of the precision lead screw.

[0010] A light source module is disposed on the surface of an infrared light source, and a gas absorption pool is installed on the surface of the infrared light source.

[0011] Preferably, sliders are installed on both the lower front and back of the infrared light source, and slide rails are installed on the inner wall of the monitoring sensor housing at positions corresponding to the sliders. The sliders are installed inside the slide rails, enabling the infrared light source to move linearly.

[0012] Preferably, each of the connecting ends of the slide rail is equipped with a connecting bracket, and each connecting bracket has a threaded rod screwed onto its surface. The threaded rod is screwed onto the inner wall of the monitoring sensor housing, which facilitates the installation of the slide rail.

[0013] Preferably, a support frame is installed at the bottom of the inner cavity of the monitoring sensor housing, and a bolt is screwed between the support frame and the bottom of the inner cavity of the monitoring sensor housing. The motor is installed on the upper surface of the support frame, which facilitates the installation of the motor.

[0014] Preferably, a sealing plate is installed on the surface of the monitoring sensor housing, and positioning rods are screwed to the four corners of the sealing plate. The components inside the monitoring sensor housing can be assembled by opening the sealing plate.

[0015] Preferably, a sealing ring is installed inside the monitoring sensor housing at a position corresponding to the gas absorption pool to seal the connection between the gas absorption pool and the monitoring sensor housing. A sealing strip is installed on the surface of the sealing plate to seal the gap between the sealing plate and the monitoring sensor housing.

[0016] Beneficial effects

[0017] Compared with the prior art, this utility model provides an SF6 gas infrared monitoring sensor, which has the following advantages:

[0018] This SF6 gas infrared monitoring sensor uses an integrated motor-driven transmission structure between the first and second gears within the sensor housing to adjust the axial displacement of the infrared light source via a precision lead screw. This dynamically optimizes the optical path length within the gas absorption cell, thereby matching the optimal absorption efficiency of SF6 gas at different concentrations or pressures and avoiding insufficient measurement sensitivity caused by a fixed optical path design. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the structure in cross-section of this utility model;

[0021] Figure 3 This is a schematic diagram of the installation structure of the detector array of this utility model;

[0022] Figure 4 A schematic diagram of the structure of the sealing plate of this utility model.

[0023] In the diagram: 1. Monitoring sensor housing; 2. Main detector; 3. Microprocessor; 4. Temperature compensation module; 5. Motor; 6. First gear; 7. Second gear; 8. Precision lead screw; 9. Infrared light source; 10. Light source module; 11. Gas absorption cell; 12. Slider; 13. Slide rail; 14. Connecting frame; 15. Threaded rod; 16. Support frame; 17. Bolt; 18. Sealing plate; 19. Positioning rod; 20. Sealing ring; 21. Sealing strip. Detailed Implementation

[0024] 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.

[0025] This utility model provides a technical solution: an SF6 gas infrared monitoring sensor. Please refer to [link / reference]. Figure 1 This includes a monitoring sensor housing 1, on the surface of which a main detector 2 is mounted. Please refer to [link / reference]. Figure 2 The monitoring sensor housing 1 has a microprocessor 3 installed inside, and a temperature compensation module 4 is installed on the surface of the microprocessor 3.

[0026] Motor 5 is located inside the monitoring sensor housing 1. Please refer to [link / reference]. Figure 3 The rotor of motor 5 is coaxially mounted with a first gear 6, and a second gear 7 meshes with the upper surface of the first gear 6. A precision lead screw 8 is mounted on the shaft of the second gear 7, and an infrared light source 9 is screwed onto the surface of the precision lead screw 8.

[0027] Please see Figure 2 The light source module 10 is disposed on the surface of the infrared light source 9, and a gas absorption pool 11 is installed on the surface of the infrared light source 9.

[0028] By monitoring the integrated motor 5 inside the sensor housing 1 to drive the meshing transmission structure of the first gear 6 and the second gear 7, the precision lead screw 8 is driven to realize the axial displacement adjustment of the infrared light source 9. The optical path length in the gas absorption cell 11 can be dynamically optimized, thereby matching the best absorption efficiency of SF6 gas under different concentrations or pressures, and avoiding the problem of insufficient measurement sensitivity caused by fixed optical path design.

[0029] The microprocessor 3 integrates a temperature compensation module 4, which can collect ambient temperature data in real time and correct the output fluctuations of the infrared light source 9 and the temperature dependence of the gas absorption coefficient, thus eliminating the interference of ambient temperature changes on the measurement results. In addition, the direct coupling design between the light source module 10 and the infrared light source 9 shortens the optical path heat conduction path. Combined with the closed-loop position feedback control of the motor 5, the stability of the light source and the repeatability of the optical path adjustment are further improved, ultimately achieving high-precision, anti-interference real-time monitoring of SF6 gas concentration.

[0030] Please see Figure 3 The infrared light source 9 has sliders 12 installed on both the front and back sides of its lower part. The inner wall of the monitoring sensor housing 1 is equipped with slide rails 13 at the corresponding positions of the sliders 12. The sliders 12 are installed inside the slide rails 13, which enables the infrared light source 9 to move in a straight line.

[0031] Each connecting end of the slide rail 13 is equipped with a connecting bracket 14, and each connecting bracket 14 has a threaded rod 15 screwed onto its surface. The threaded rod 15 is screwed onto the inner wall of the monitoring sensor housing 1, which facilitates the installation of the slide rail 13.

[0032] A support frame 16 is installed at the bottom of the inner cavity of the monitoring sensor housing 1. A bolt 17 is screwed between the support frame 16 and the bottom of the inner cavity of the monitoring sensor housing 1. The motor 5 is installed on the upper surface of the support frame 16, which facilitates the installation of the motor 5.

[0033] Please see Figure 2 A sealing plate 18 is installed on the surface of the monitoring sensor housing 1. Please refer to [link / reference]. Figure 4 Positioning rods 19 are screwed onto the four corners of the sealing plate 18. By opening the sealing plate 18, the components inside the monitoring sensor housing 1 can be assembled. The second gear 7 is connected to the surface of the sealing plate 18 through a bearing.

[0034] A sealing ring 20 is installed inside the monitoring sensor housing 1 at a position corresponding to the gas absorption pool 11, which can seal the connection between the gas absorption pool 11 and the monitoring sensor housing 1. A sealing strip 21 is installed on the surface of the sealing plate 18, which can seal the gap between the sealing plate 18 and the monitoring sensor housing 1.

[0035] In operation, this solution works as follows: Inside the sensor housing 1, a motor 5 is mounted at the bottom of the housing cavity via a support frame 16 and bolts 17. The rotor of the motor 5 drives the first gear 6, which is mounted coaxially, to rotate. The second gear 7, which meshes with the first gear 6, rotates accordingly, thereby driving the precision lead screw 8 on its axis to rotate. This causes the infrared light source 9, which is screwed onto the surface of the precision lead screw 8, to move linearly under the cooperation of the slider 12 and the slide rail 13, achieving axial displacement adjustment. At the same time, the slide rail 13 is mounted on the inner wall of the housing via a connecting frame 14 and a threaded rod 15. A light source module 10 and a gas absorption cell 11 are mounted on the surface of the infrared light source 9. The microprocessor 3 collects ambient temperature data in real time via a temperature compensation module 4 and corrects the output fluctuation of the infrared light source 9 and the temperature dependence of the gas absorption coefficient. The internal components can be assembled by opening the sealing plate 18, which has a positioning rod 19 on its surface. The second gear 7 is connected to the sealing plate 18 via a bearing. In addition, there is a sealing ring 20 at the position corresponding to the gas absorption cell 11 inside the housing, and a sealing strip 21 on the surface of the sealing plate 18 for sealing. Through the above structure, high-precision, interference-resistant real-time monitoring of SF6 gas concentration is achieved.

[0036] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An SF6 gas infrared monitoring sensor, characterized in that, include: A monitoring sensor housing (1) is provided, a main detector (2) is mounted on the surface of the monitoring sensor housing (1), a microprocessor (3) is mounted inside the monitoring sensor housing (1), and a temperature compensation module (4) is mounted on the surface of the microprocessor (3). The motor (5) is located inside the housing (1) of the monitoring sensor. The rotor of the motor (5) is coaxially mounted with a first gear (6). A second gear (7) meshes with the upper surface of the first gear (6). A precision lead screw (8) is mounted on the shaft of the second gear (7). An infrared light source (9) is screwed onto the surface of the precision lead screw (8). A light source module (10) is disposed on the surface of an infrared light source (9), and a gas absorption pool (11) is installed on the surface of the infrared light source (9).

2. The SF6 gas infrared monitoring sensor according to claim 1, characterized in that: The infrared light source (9) has sliders (12) installed on both the front and back sides of its lower part, and the inner wall of the monitoring sensor housing (1) is equipped with slide rails (13) at the corresponding positions of the sliders (12).

3. The SF6 gas infrared monitoring sensor according to claim 2, characterized in that: Each of the slide rails (13) is equipped with a connecting frame (14), and each of the connecting frames (14) is screwed with a threaded rod (15), which is screwed onto the inner wall of the monitoring sensor housing (1).

4. The SF6 gas infrared monitoring sensor according to claim 1, characterized in that: A support frame (16) is installed at the bottom of the inner cavity of the monitoring sensor housing (1), and a bolt (17) is screwed between the support frame (16) and the bottom of the inner cavity of the monitoring sensor housing (1). The motor (5) is installed on the upper surface of the support frame (16).

5. An SF6 gas infrared monitoring sensor according to claim 1, characterized in that: A sealing plate (18) is installed on the surface of the housing (1) of the monitoring sensor, and a positioning rod (19) is screwed to each of the four corners of the surface of the sealing plate (18).

6. An SF6 gas infrared monitoring sensor according to claim 5, characterized in that: A sealing ring (20) is installed inside the housing (1) of the monitoring sensor and at the corresponding position of the gas absorption pool (11), and a sealing strip (21) is installed on the surface of the sealing plate (18).

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