SF6 / O2 temperature and humidity four-in-one sensor

Abstract

The utility model relates to an SF6 / O2 temperature and humidity four-in-one sensor, and belongs to the technical field of sensors. The SF6 / O2 temperature and humidity four-in-one sensor comprises a sensor main body, an insertion cavity is formed in the top of the socket, a counter bore communicated with the insertion cavity is formed in the socket, and a screw is inserted into the counter bore; the hollow-out mounting frame is inserted into the inner side of the insertion cavity, the horizontal cross section of the connection part of the hollow-out mounting frame and the insertion cavity is in a matched convex shape, and the sensor main body is arranged between the socket and the hollow-out mounting frame; the socket is matched with the hollow mounting frame through a convex cross section, and the one-key quick release of the sensor main body is realized by combining a spring driving inclined plane locking design of the positioning mechanism; and unlocking can be achieved by pulling the adjusting block outwards, the tedious process of traditional bolt dismounting is avoided, the base is fixed through cooperation with counter bore screws, the monthly calibration and maintenance efficiency is remarkably improved, and the long-term operation and maintenance cost is reduced.

Description

An SF6 / O2 temperature and humidity sensor Technical Field

[0001] This utility model relates to the field of sensor technology, and in particular to an SF6 / O2 temperature and humidity four-in-one sensor. Background Technology

[0002] The SF6 / O2 temperature and humidity quad-sensor is a multi-functional integrated detection device specifically designed for the simultaneous monitoring of four parameters in the environment: sulfur hexafluoride (SF6) concentration, oxygen (O2) content, temperature, and humidity. Its core function is to provide safety management and equipment maintenance for confined spaces in power systems.

[0003] Currently, most SF6 / O2 temperature and humidity quad-sensors are fixed in their respective positions with bolts. When staff need to maintain or replace the SF6 / O2 temperature and humidity quad-sensor regularly, they have to install and remove each bolt individually to complete the installation or removal of the SF6 / O2 temperature and humidity quad-sensor. This increases the burden on staff to maintain the SF6 / O2 temperature and humidity quad-sensor and reduces its practicality. Summary of the Invention

[0004] Therefore, it is necessary to provide a new SF6 / O2 temperature and humidity sensor that addresses the inconvenience of maintenance associated with existing SF6 / O2 temperature and humidity sensors.

[0005] An SF6 / O2 temperature and humidity sensor, comprising:

[0006] Sensor body;

[0007] A socket, wherein a cavity is provided at the top of the socket, and a countersunk hole communicating with the cavity is provided inside the socket, and a screw is inserted into the countersunk hole;

[0008] A hollow mounting bracket is inserted into the inner side of the socket. The horizontal cross-sectional shape of the connection between the hollow mounting bracket and the socket is a matching convex shape. The sensor body is disposed between the socket and the hollow mounting bracket.

[0009] A positioning mechanism is installed at the bottom of a hollow mounting frame, and one end of the positioning mechanism is engaged with a socket.

[0010] In one embodiment, the socket has a slot communicating with the insertion cavity inside, the bottom of the hollow mounting bracket has a mounting cavity communicating with the slot, and the positioning mechanism includes a locking strip slidably connected inside the mounting cavity, one end of the locking strip passing through the mounting cavity and engaging with the slot.

[0011] In one embodiment, the vertical cross-sectional shape of the slot and the locking bar connected to the slot is a matching right triangle, and the inclined surfaces of the locking bar and the slot face away from the sensor body.

[0012] In one embodiment, a spring is fixedly connected to the other end of the locking bar, and one end of the spring is fixedly connected to the mounting cavity.

[0013] In one embodiment, the spring is a rubber material component, and the spring is always in a compressed state.

[0014] In one embodiment, an adjustment block is fixedly connected to the bottom of the locking bar, and the bottom of the adjustment block extends through the mounting cavity.

[0015] In one embodiment, a resistance-increasing strip is fixedly connected to the bottom of the adjusting block, and the resistance-increasing strip is parallel to the opening of the slot.

[0016] In one embodiment, the number of resistance-increasing strips is not less than three and they are evenly distributed at the bottom of the adjusting block, and the resistance-increasing strips are rubber material components.

[0017] Beneficial effects

[0018] The aforementioned SF6 / O2 temperature and humidity sensor features a socket and a hollow mounting bracket that fit together with a convex cross section. Combined with the spring-driven inclined locking design of the positioning mechanism, it enables one-click quick disassembly of the sensor body. Furthermore, it can be unlocked by pulling out the adjustment block, avoiding the cumbersome process of traditional bolt disassembly. With the countersunk screw fixing base, it significantly improves the efficiency of monthly calibration and maintenance, and reduces long-term operation and maintenance costs. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0020] Figure 1 is a schematic diagram of the overall structure of this utility model;

[0021] Figure 2 is a schematic diagram of a partial structure in this utility model;

[0022] Figure 3 is a vertical cross-sectional view of a partial structure in this utility model;

[0023] Figure 4 is an enlarged view of A in Figure 3;

[0024] Figure 5 is a horizontal cross-sectional view of a partial structure in this utility model.

[0025] Figure label:

[0026] 100. Sensor body; 200. Socket; 210. Insertion cavity; 220. Countersunk hole; 230. Slot; 300. Screw; 400. Hollowed-out mounting bracket; 410. Mounting cavity; 500. Positioning mechanism; 510. Locking bar; 520. Spring; 530. Adjusting block; 540. Resistance increasing bar. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0029] 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.

[0030] 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 and the second feature are in indirect contact 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 indicates 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 indicates that the first feature is at a lower horizontal level than the second feature.

[0031] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0032] The following describes the SF6 / O2 temperature and humidity four-in-one sensor of this utility model with reference to Figures 1-5.

[0033] In one embodiment, an SF6 / O2 temperature and humidity quadruple sensor includes:

[0034] Sensor body 100;

[0035] Sensor body 100, but not limited to the following structures:

[0036] The aluminum alloy electroplated housing features convection holes and wiring holes on its surface. The convection holes enhance gas diffusion efficiency, while the wiring holes ensure smooth connection between internal interfaces and external connectors. A backup battery power supply is also available upon request.

[0037] SF6 Infrared Sensor: The SF6 infrared sensor is based on non-dispersive infrared technology and utilizes the strong absorption characteristics of SF6 for 10.6μm wavelength infrared light. The infrared light source emits a dual-wavelength beam that passes through the gas chamber and is compared by the detector to check the difference in light intensity attenuation. Combined with the Lambert-Beer law, the concentration is calculated by the exponential relationship between light intensity attenuation and gas concentration. The sensor also integrates a temperature and humidity compensation mechanism to correct for environmental interference.

[0038] Electrochemical O2 sensor: The electrochemical O2 sensor allows oxygen to permeate through a PTFE membrane, where a redox reaction occurs in the electrolyte. The generated current is proportional to the oxygen concentration and is output after signal processing.

[0039] Digital temperature and humidity sensor: The digital temperature and humidity sensor detects temperature changes through a thermistor / platinum resistance thermometer and measures humidity through a capacitive / resistive humidity sensor. After ADC conversion and microprocessor calibration, it outputs a digital signal.

[0040] It features a built-in RS485 communication interface and control panel, and supports the MODBUS RTU protocol.

[0041] Installation method of sensor body 100:

[0042] Location selection: Install 0.3-1m below SF6 equipment (such as GIS switch) to avoid interference from direct ventilation openings.

[0043] Electrical connection: Connect to power supply (AC220V±10%) and RS485 communication line via 2.54mm pitch wiring device.

[0044] Environmental requirements: Operating temperature -20~50℃, humidity 0-90%RH (non-condensing).

[0045] Operation process of sensor body 100:

[0046] Start-up phase: After power-on, the SF6 sensor preheats for 2 minutes, and the O2 sensor preheats for 30 minutes;

[0047] Monitoring phase: Gas concentration, temperature, and humidity are collected every 60 seconds in a cyclical manner;

[0048] Alarm Response: When the limit is exceeded, an audible and visual alarm is activated, the fan is controlled synchronously, and the event log is recorded.

[0049] Maintenance requirements: Disassemble and calibrate monthly, and avoid prolonged use in dusty environments.

[0050] The socket 200 has a cavity 210 on its top and a countersunk hole 220 communicating with the cavity 210 inside. A screw 300 is inserted into the countersunk hole 220. During initial installation, the socket 200 is first aligned with the corresponding position, and then the screw 300 is connected to the mounting surface through the countersunk hole until the socket 200 is firmly locked to the mounting surface.

[0051] A hollow mounting bracket 400 is inserted into the inner side of the socket 210. The horizontal cross-sectional shape of the connection between the hollow mounting bracket 400 and the socket 210 is a matching convex shape. The sensor body 100 is disposed between the socket 200 and the hollow mounting bracket 400.

[0052] Positioning mechanism 500 is installed at the bottom of the hollow mounting bracket 400, and one end of positioning mechanism 500 is snapped into socket 200.

[0053] As shown in Figures 3, 4, and 5, the socket 200 has a slot 230 communicating with the insertion cavity 210 inside, and the bottom of the hollow mounting bracket 400 has a mounting cavity 410 communicating with the slot 230. The positioning mechanism 500 includes a locking bar 510 slidably connected inside the mounting cavity 410. One end of the locking bar 510 passes through the mounting cavity 410 and engages with the slot 230. The vertical cross-sectional shapes of the slot 230 and the connection part of the locking bar 510 with the slot 230 are both matching right-angled triangles, and the inclined surfaces of the locking bar 510 and the slot 230 face away from the sensor body 100. A spring 520 is fixedly connected to the other end of the locking bar 510, and one end of the spring 520 is fixedly connected to the mounting cavity 410. The spring 520 is a rubber component and is always in a compressed state. An adjusting block 530 is fixedly connected to the bottom of the locking bar 510, and the bottom of the adjusting block 530 extends through the mounting cavity 410. A resistance-increasing bar 540 is fixedly connected to the bottom of the adjusting block 530, and the resistance-increasing bar 540 is parallel to the opening of the slot 230. There are no fewer than three resistance-increasing bars 540, which are evenly distributed on the bottom of the adjusting block 530. The resistance-increasing bars 540 are made of rubber.

[0054] In this embodiment, when the staff unlocks the positioning mechanism 500, the staff only needs to move the adjusting block 530 away from the socket 200. The adjusting block 530 will cause the locking strip 510 to separate from the slot 230. At this time, the hollow mounting bracket 400 and the socket 200 will no longer be obstructed, and the staff can easily remove the hollow mounting bracket 400 along with the sensor body 100.

[0055] When the worker installs the hollow mounting bracket 400 along with the sensor body 100 into the cavity 210, the inclined surface of the locking strip 510 contacts the corner of the cavity 210 in advance and is pressed back into the mounting cavity 410 by the locking strip 510. When the hollow mounting bracket 400 and the cavity 210 are connected in place, the locking strip 510 is just aligned with the slot 230. The spring 520 pushes the locking strip 510 back into the slot 230. At this time, the vertical inner wall of the slot 230 opposite to the locking strip 510 prevents the hollow mounting bracket 400 along with the sensor body 100 from moving upward, so as to ensure that the sensor body 100 can operate stably.

[0056] Working principle: When the operator needs to disassemble and maintain the sensor body 100, first disconnect the external connector on the sensor body 100, then unlock the positioning mechanism 500, and then slide the hollow mounting bracket 400 outward into the cavity 210. The hollow mounting bracket 400 drives the sensor body 100 outward along the cavity 210. When the hollow mounting bracket 400 drives the sensor body 100, it will be unobstructed, and the operator can remove the sensor body 100 from the hollow mounting bracket 400 for maintenance or replacement.

[0057] It should be noted that the SF6 infrared sensor, electrochemical O2 sensor, digital temperature and humidity sensor, RS485 communication interface and control panel mentioned above are all devices with relatively mature existing technologies. Specific models can be selected according to actual needs, and will not be elaborated here.

[0058] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0059] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. An SF6 / O2 temperature and humidity sensor, characterized in that, include: The sensor body (100) comprises: a socket (200) with a cavity (210) at the top and a countersunk hole (220) communicating with the cavity (210) inside; a screw (300) inserted into the countersunk hole (220); a hollow mounting bracket (400) inserted into the cavity (210) with a matching convex shape at the connection between the hollow mounting bracket (400) and the cavity (210); and a positioning mechanism (500) installed at the bottom of the hollow mounting bracket (400) with one end engaging with the socket (200).

2. The SF6 / O2 temperature and humidity quadrant sensor according to claim 1, characterized in that, The socket (200) has a slot (230) inside that communicates with the insertion cavity (210). The bottom of the hollow mounting bracket (400) has a mounting cavity (410) that communicates with the slot (230). The positioning mechanism (500) includes a locking strip (510) that is slidably connected inside the mounting cavity (410). One end of the locking strip (510) passes through the mounting cavity (410) and engages with the slot (230).

3. The SF6 / O2 temperature and humidity quadruple sensor according to claim 2, characterized in that, The vertical cross-sectional shape of the slot (230) and the locking bar (510) connected to the slot (230) is a matching right triangle, and the inclined surfaces of the locking bar (510) and the slot (230) face away from the sensor body (100).

4. The SF6 / O2 temperature and humidity sensor according to claim 2, characterized in that, The other end of the locking bar (510) is fixedly connected to a spring (520), and one end of the spring (520) is fixedly connected to the mounting cavity (410).

5. The SF6 / O2 temperature and humidity quadruple sensor according to claim 4, characterized in that, The spring (520) is a rubber material component, and the spring (520) is always in a compressed state.

6. The SF6 / O2 temperature and humidity quadruple sensor according to claim 2, characterized in that, An adjusting block (530) is fixedly connected to the bottom of the locking bar (510), and the bottom of the adjusting block (530) extends through the mounting cavity (410).

7. The SF6 / O2 temperature and humidity quadruple sensor according to claim 6, characterized in that, The bottom of the adjusting block (530) is fixedly connected to a resistance-increasing strip (540), which is parallel to the opening of the slot (230).

8. The SF6 / O2 temperature and humidity quadruple sensor according to claim 7, characterized in that, The number of the resistance-increasing strips (540) is not less than three and they are evenly distributed at the bottom of the adjusting block (530). The resistance-increasing strips (540) are made of rubber material.

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