High-temperature humidity probe

Abstract

The utility model discloses a high temperature humidity probe including a fixed seat, a tube body and a detection head, the fixed seat and the detection head are respectively arranged at two ends of the tube body, a positioning ring is arranged in the middle of an inner cavity of the tube body, a toggle mechanism is arranged at the joint of the fixed seat and the tube body, a sintering sheet is arranged between the toggle mechanism and the positioning ring, and the sintering sheet is arranged on the tube body. A plurality of groups of through holes are formed in the sintering sheet, and a spring is arranged between the sintering sheet and the positioning ring; a calibration air hole is formed in an inner cavity of the pipe body, a humidity-sensitive capacitor and a thin-film resistor are installed at the joint of the detection head and the pipe body, a PT sensor and a heating rod are installed in the probe, an electric signal is generated through the humidity-sensitive capacitor and transmitted to a control module, and the thin-film resistor is a thermistor and used for monitoring and measuring the temperature of gas in a cavity. A gas blowback function can be realized through the standard gas hole, the sintering sheet is cleaned, and the phenomenon that smoke cannot enter a test chamber in the probe due to blockage is prevented.

Description

Technical Field

[0001] This utility model relates to the field of high temperature temperature probe technology, and in particular to a high temperature humidity probe. Background Technology

[0002] In industries such as timber, building materials, papermaking, chemicals, and fibers, coal-fired and oil-fired boilers are used to emit exhaust gases. These exhaust gases require monitoring. Temperature and humidity probes are devices that measure temperature and humidity, typically consisting of sensors and a display. Their main function is to detect the temperature and humidity of the surrounding environment to regulate and control it, ensuring the stability and reliability of any temperature-sensitive components. They need to filter out small solid particles from the smoke and dust to detect gas parameters such as humidity and temperature. However, with increased operating time, solid particles accumulate, causing blockages and affecting detection results, necessitating regular cleaning. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a high-temperature humidity probe.

[0004] This utility model proposes a high-temperature humidity probe, including a fixed base, a tube body, and a probe head. The fixed base and the probe head are respectively located at both ends of the tube body. A positioning ring is provided in the middle of the inner cavity of the tube body. The fixed base has a smoke inlet that communicates with the inner cavity of the tube body. A toggle mechanism is installed at the connection between the fixed base and the tube body. A sintered plate is provided between the toggle mechanism and the positioning ring. The sintered plate has multiple sets of through holes. A spring is provided between the sintered plate and the positioning ring. The spring pushes the sintered plate to fit tightly against the toggle mechanism. The toggle mechanism is used to intermittently drive the sintered plate to compress the spring.

[0005] The inner cavity of the tube is equipped with a calibration vent, and a humidity-sensitive capacitor and a thin-film resistor are installed at the connection between the probe and the tube. A PT100 sensor and a heating rod are installed inside the probe.

[0006] Preferably, the outer wall of the tube is provided with several annular grooves, and O-rings are installed in the annular grooves.

[0007] Preferably, the actuating mechanism includes a rotating rod, and an arc-shaped paddle is fixedly connected to the side wall of the rotating rod. The rotating rod is driven to rotate by a driving component, and the convex arc surface of the arc-shaped paddle contacts the sintered sheet first.

[0008] Preferably, the actuating mechanism is provided in at least two sets, located on both sides of the sintered sheet respectively.

[0009] Preferably, the outer side wall of the rotating rod is provided with a rubber pad.

[0010] This invention proposes a high-temperature humidity probe. Flue gas enters through a sintered sheet, generates an electrical signal via a humidity-sensitive capacitor, and is transmitted to the control module. A thin-film resistor, acting as a thermistor, monitors the gas temperature within the measurement chamber. A PT100 sensor monitors the heating temperature of the heating rod (i.e., the temperature of the metal probe). The heating rod's heating is adjusted based on feedback from the thin-film resistor and the PT100 sensor. As operating time increases, dust particles may accumulate on the sintered sheet. A backflushing function is achieved through standard vents to clean the sintered sheet and prevent blockages that could prevent flue gas from entering the probe's testing chamber. The electrical signal generated by the humidity-sensitive capacitor, after being filtered and amplified by the control module, is output as a digital signal.

[0011] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the actuating mechanism in this utility model.

[0014] Figure 3 This is a schematic diagram of the positioning ring in this utility model.

[0015] The following are the labels in the diagram: 1. Fixing base; 101. Smoke inlet; 2. Tube body; 201. Inner cavity; 202. O-ring; 3. Probe head; 4. Spring; 5. Sintered plate; 501. Through hole; 6. Actuating mechanism; 601. Rotating rod; 602. Arc-shaped lever; 603. Rubber pad; 7. Humidity-sensitive capacitor; 8. Thin-film resistor; 9. Calibration vent; 10. PT100 sensor; 11. Heating rod; 12. Positioning ring. Detailed Implementation

[0016] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0017] like Figures 1-3A high-temperature humidity probe is shown, comprising a fixed base 1, a tube body 2, and a probe head 3. The fixed base 1 and the probe head 3 are located at opposite ends of the tube body 2. A positioning ring 12 is provided in the middle of the inner cavity 201 of the tube body 2. The fixed base 1 has a smoke inlet 101 that communicates with the inner cavity 201 of the tube body 2. An actuating mechanism 6 is installed at the connection between the fixed base 1 and the tube body 2. A sintered sheet 5 is provided between the actuating mechanism 6 and the positioning ring 12. The sintered sheet 5 has multiple sets of through holes 501. A spring 4 is provided between the sintered sheet 5 and the positioning ring 12. The spring 4 pushes the sintered sheet 5 to fit tightly against the actuating mechanism 6. The actuating mechanism 6 is used to intermittently drive the sintered sheet 5 to compress the spring 4.

[0018] The inner cavity 201 of the tube body 2 is equipped with a calibration vent 9. The connection between the probe head 3 and the tube body 2 is equipped with a humidity-sensitive capacitor 7 and a thin-film resistor 8. The probe is equipped with a PT100 sensor 10 and a heating rod 11.

[0019] The flue gas enters through the smoke inlet of the fixed base 1 and the sintered sheet 5. The electrical signal generated by the humidity-sensitive capacitor 7 is transmitted to the control module. The thin film resistor 8 is a thermistor used to monitor the gas temperature in the measurement chamber. The PT100 sensor 10 monitors the heating temperature of the heating rod 11 (i.e., the temperature of the metal probe). The heating rod 11 is adjusted to be heated or not by the feedback from the thin film resistor 8 and the PT100.

[0020] Preferably, the outer wall of the tube body 2 is provided with several annular grooves, and an O-ring 202 is installed in the annular grooves.

[0021] Preferably, the actuating mechanism 6 includes a rotating rod 601, and an arc-shaped paddle 602 is fixedly connected to the side wall of the rotating rod 601. The rotating rod 601 is driven to rotate by a driving member, and the convex arc surface of the arc-shaped paddle 602 contacts the sintered sheet 5 first.

[0022] Preferably, the actuating mechanism 6 is provided in at least two sets, located on both sides of the sintered sheet 5 respectively.

[0023] As operating time increases, dust particles will adhere to the surface of the sintered sheet 5. Backflushing can be achieved through the standard air vents, but the dust removal effect is generally limited. The actuating mechanism 6 controls the rotation of the rotating rod 601 via a drive component. The arc-shaped actuating plate 602 on its side wall presses down on the sintered sheet 5 to compress the spring 4. When the arc-shaped actuating plate 602 disengages from the sintered sheet 5, the sintered sheet 5 will quickly rebound under the action of the spring 4, impacting the side wall of the rotating rod 601. Under the action of inertia, the dust adhering to the surface of the sintered sheet 5 will detach from the sintered sheet 5. Combined with the backflushing through the standard air vents, this effectively cleans the sintered sheet 5 and prevents blockage that would prevent flue gas from entering the probe's testing chamber. The electrical signal generated by the humidity-sensitive capacitor 7 enters the control module, is filtered and amplified, and then outputs a digital signal.

[0024] Preferably, the outer wall of the rotating rod 601 is provided with a rubber pad 603, which serves as a buffer and protection function when the sintered sheet 5 impacts the outer side of the rotating rod 601.

[0025] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A high-temperature humidity probe, characterized in that: The device includes a fixed base (1), a tube body (2), and a probe (3). The fixed base (1) and the probe (3) are located at the two ends of the tube body (2). A positioning ring (12) is provided in the middle of the inner cavity (201) of the tube body (2). The fixed base (1) has a smoke inlet (101) that communicates with the inner cavity (201) of the tube body (2). A toggle mechanism (6) is installed at the connection between the fixed base (1) and the tube body (2). A sintered plate (5) is provided between the toggle mechanism (6) and the positioning ring (12). Multiple sets of through holes (501) are opened on the sintered plate (5). A spring (4) is provided between the sintered plate (5) and the positioning ring (12). The spring (4) pushes the sintered plate (5) to fit tightly against the toggle mechanism (6). The toggle mechanism (6) is used to intermittently drive the sintered plate (5) to compress the spring (4). The inner cavity (201) of the tube body (2) is equipped with a calibration vent (9), and a humidity-sensitive capacitor (7) and a thin-film resistor (8) are installed at the connection between the probe (3) and the tube body (2). A PT100 sensor (10) and a heating rod (11) are installed inside the probe.

2. The high-temperature humidity probe according to claim 1, characterized in that, The outer wall of the tube (2) is provided with several annular grooves, and O-rings (202) are installed in the annular grooves.

3. A high-temperature humidity probe according to claim 1, characterized in that, The actuating mechanism (6) includes a rotating rod (601), and an arc-shaped paddle (602) is fixedly connected to the side wall of the rotating rod (601). The rotating rod (601) is driven to rotate by a driving member, and the convex arc surface of the arc-shaped paddle (602) contacts the sintered sheet (5) first.

4. A high-temperature humidity probe according to claim 1, characterized in that, The actuating mechanism (6) has at least two sets, located on both sides of the sintered sheet (5).

5. A high-temperature humidity probe according to claim 3, characterized in that, The outer wall of the rotating rod (601) is provided with a rubber pad (603).

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