A kind of optical fiber temperature measuring device for coal mine underground environment temperature monitoring
By incorporating a dust cover, dust baffle, and adjustment components into the fiber optic temperature measurement device, the problem of dust contamination of the temperature measurement device in underground coal mines has been solved, achieving effective protection in high-dust environments and ensuring the normal operation of the temperature sensor.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- GUAN ZHONGXIAO RUIAN FIRE FIGHTING EQUIP CO LTD
- Filing Date
- 2025-06-20
- Publication Date
- 2026-06-02
AI Technical Summary
Existing portable fiber optic temperature measurement devices lack protection when used in underground coal mines, causing dust to easily drift onto the temperature measurement host, potentially soiling or damaging the equipment.
A fiber optic temperature measuring device was designed, comprising a dust cover, a dust baffle, an adjustment plate, and an adjustment component. It is mounted on a mobile frame via a limiting component. The lifting and adjustment components work together to prevent dust from entering the temperature measuring device. The dust cover and dust baffle are made of transparent plastic for easy observation and movement.
It effectively prevents dust in coal mines from contaminating and damaging the temperature measuring device, ensuring the normal use and lifespan of the temperature measuring device, and improving the reliability of the device in high-dust environments.
Smart Images
Figure CN224317185U_ABST
Abstract
Description
Technical Field
[0001] The embodiments disclosed herein relate to the field of fiber optic temperature measurement devices, specifically, to a fiber optic temperature measurement device for monitoring the ambient temperature in underground coal mines. Background Technology
[0002] Underground coal mines refer to the spaces below the surface where mineral resources are developed, tunnels are excavated, equipment is arranged, and production operations take place. The environment in underground coal mines is unique and highly dangerous. Due to the complex environment and abnormal temperatures, and the fact that coal seams generate heat through oxidation upon contact with air, the temperature can exceed a critical point and potentially lead to spontaneous combustion. Therefore, fiber optic temperature measurement devices are required to measure the temperature inside the coal mine before mining begins.
[0003] When measuring temperature inside a coal mine, a portable fiber optic temperature measuring device is usually used. This device is moved into the coal mine and connected to the temperature measuring host via fiber optic cable. The temperature inside the coal mine is then transmitted to the temperature measuring host via the fiber optic cable, thus revealing the temperature inside the coal mine.
[0004] However, due to the high level of dust in coal mines, existing portable fiber optic temperature measurement devices lack protective measures. If the device is moved directly into the coal mine during temperature measurement, dust can easily drift onto the temperature measurement host, which will not only dirty the host but may also damage it due to excessive dust accumulation in severe cases. Utility Model Content
[0005] To overcome the above-mentioned defects, embodiments of this disclosure provide a fiber optic temperature measuring device for monitoring the ambient temperature in underground coal mines, which solves the technical problem in the prior art where dust in the coal mine easily drifts onto the temperature measuring host when the temperature measuring device is moved into the coal mine for temperature measurement.
[0006] According to one aspect, at least one embodiment of this disclosure provides a fiber optic temperature measuring device for monitoring ambient temperature in underground coal mines, including a thermometer mounted on a movable frame, and further including a dust cover, a dust baffle, an adjusting plate, and an adjusting assembly. The dust cover is disposed on the movable frame via a limiting assembly, and one side of the dust cover is open. The dust baffle is slidably mounted on the dust cover via a lifting assembly. Two adjusting plates are disposed and slidably mounted inside the dust cover. The adjusting assembly is disposed on the side of the dust cover, and both adjusting plates are disposed on the adjusting assembly.
[0007] Furthermore, the lifting assembly includes a protective cover, an electric cylinder, and a connecting frame. Two protective covers are provided, and the two protective covers are detachably installed on both sides of the dust cover. Two electric cylinders are provided, and the two electric cylinders are installed inside the two dust covers. Two connecting frames are provided, and the two connecting frames are fixedly connected to the output ends of the two electric cylinders, and the other end of the connecting frame is fixedly installed on the top of the dust baffle.
[0008] Furthermore, the limiting component includes limiting blocks and limiting plates. There are four limiting blocks, and each pair of the four limiting blocks forms a group. Both groups of limiting blocks are fixedly installed on the top of the movable frame. The limiting plates are fixedly installed on both sides of the dust cover, and the limiting plates are provided with limiting grooves that are adapted to the limiting blocks.
[0009] Furthermore, the adjustment assembly includes a fixed bracket, a sliding bracket, and bolts. Two fixed brackets are provided, and both fixed brackets are fixedly installed on the side of the dust cover. The side of the fixed bracket has two threaded holes. The side of the dust cover has two vertically oriented sliding grooves. The two ends of the sliding bracket are slidably installed in the two sliding grooves respectively. Both adjustment plates are fixedly installed on the side of the sliding bracket. The side of the sliding bracket has threaded holes, and the bolts are threaded into the threaded holes.
[0010] In order for the adjusting plate to be placed on the movable frame when the dust cover is placed on the movable frame, the adjusting plate is located inside the dust baffle when the threaded hole of the sliding frame corresponds to one of the threaded holes of the fixed frame, and the bottom end of the adjusting plate is at the same horizontal position as the bottom end of the dust baffle.
[0011] To further reduce the weight of the device when it is moved, both the dust shield and the dust cover are made of transparent plastic.
[0012] In order to connect the optical fiber to the temperature sensor, the dust baffle is further provided with a cable outlet groove on its side, and a baffle is hinged to the cable outlet groove.
[0013] To facilitate the movement of the device, the bottom of the mobile frame is equipped with several casters, and a pusher is fixedly installed on the side of the mobile frame.
[0014] The beneficial effects of the embodiments disclosed herein are as follows:
[0015] 1. In this disclosure, when the device is pushed into the coal mine for temperature measurement, it is first installed on the moving frame by a limiting component, thereby covering the temperature measuring device on the moving frame. When moving in the coal mine, it can block the dust in the coal mine and prevent the dust from floating onto the temperature measuring device and causing damage.
[0016] 2. In this disclosure, if it is necessary to use a thermometer or make adjustments, the lifting assembly can move the dust baffle plate up a bit to expose the thermometer, while the other three sides remain closed, which can partially block the dust. Furthermore, the adjusting assembly can move the two adjusting plates down to the moving frame to further block the open side, thereby reducing the amount of dust entering the dust cover.
[0017] In summary, through the cooperation of the dust cover, dust baffle, adjusting plate, and adjusting components, this device can prevent excessive dust from floating on the temperature measuring device when it is used in underground coal mines, thus greatly blocking the dust and minimizing the risk of damage to the temperature measuring device due to dust accumulation. Attached Figure Description
[0018] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a structural schematic diagram of another state of the present invention;
[0021] Figure 3 This is a structural diagram showing the coordination of the mobile frame, casters, thermometer, dust cover, and limiting components of this utility model.
[0022] Figure 4 This is a schematic diagram of the exploded assembly of the dust baffle and the lifting component of this utility model;
[0023] Figure 5 This is a schematic diagram of the structure of the dust baffle, adjustment assembly, and adjustment plate of this utility model.
[0024] In the diagram: 1. Temperature sensor; 2. Movable frame; 3. Dust cover; 4. Dust baffle; 5. Adjusting plate; 6. Protective cover; 7. Electric cylinder; 8. Connecting frame; 9. Limit block; 10. Limit plate; 11. Fixed frame; 12. Sliding frame; 13. Bolt; 14. Door stop; 15. Casters; 16. Push frame. Detailed Implementation
[0025] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present disclosure and are not intended to limit the scope of the disclosure.
[0026] To keep the drawings concise, each drawing only schematically shows the parts relevant to the disclosure; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."
[0027] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linkage" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure based on the specific circumstances.
[0028] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature 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 includes the first feature 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.
[0029] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to 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 disclosure.
[0030] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0031] like Figures 1-5 As shown, this invention discloses an optical fiber temperature measuring device for monitoring the ambient temperature in a coal mine, comprising a thermometer 1 mounted on a movable frame 2, a dust cover 3, a dust baffle 4, an adjusting plate 5, and an adjusting assembly. The dust cover 3 is mounted on the movable frame 2 via a limiting assembly, and one side of the dust cover 3 is open. The dust baffle 4 is slidably mounted on the dust cover 3 via a lifting assembly. Two adjusting plates 5 are provided, and the two adjusting plates 5 are slidably mounted inside the dust cover 3. The adjusting assembly is located on the side of the dust cover 3, and both adjusting plates 5 are mounted on the adjusting assembly.
[0032] like Figure 3 As shown, before being pushed into the coal mine, the dust cover 3 is installed on the moving frame 2 using a limiting assembly. The limiting assembly includes limiting blocks 9 and limiting plates 10. There are four limiting blocks 9, which are arranged in pairs. Both sets of limiting blocks 9 are fixedly installed on the top of the moving frame 2. Limiting plates 10 are fixedly installed on both sides of the dust cover 3, and the limiting plates 10 have limiting grooves that are compatible with the limiting blocks 9. Specifically, the limiting grooves of the limiting plates 10 of the dust cover 3 are inserted into the limiting blocks 9, thereby installing the dust cover 3 on the moving frame 2. At this time, the thermometer 1 is located inside the dust cover 3, so the dust cover 3 will not shift left or right when moving. This is because the bottom of the moving frame 2 is equipped with several casters 15, and the side of the moving frame 2 is fixedly equipped with a pusher 16. The device is pushed into the coal mine for subsequent temperature measurement by pushing the pusher 16.
[0033] like Figure 2 and Figure 4As shown, a cable outlet groove is provided on the side of the dust baffle 4, and a baffle door 14 is hinged to the cable outlet groove. Opening the baffle door 14 allows the optical fiber to be inserted into the thermometer 1, and then the temperature is measured by pulling the optical fiber. Because the cable outlet groove is relatively small, the chance of dust entering is smaller compared to opening the entire dust baffle 4. If it is necessary to adjust the thermometer 1, the dust baffle 4 can be moved upwards by the lifting assembly until the thermometer 1 is exposed. The lifting assembly includes a protective cover 6, an electric cylinder 7, and a connecting frame 8. Two protective covers 6 are provided, and the two protective covers 6 are detachably installed on both sides of the dust cover 3. The electric cylinder 7 is... There are two electric cylinders 7, each installed inside a dust cover 3. There are also two connecting frames 8, each fixedly connected to the output end of an electric cylinder 7. The other end of the connecting frame 8 is fixedly installed on the top of a dust baffle 4. Specifically, when an electric cylinder 7 is activated, its output end moves the connecting frame 8 upward. The connecting frame 8 then moves the dust baffle 4 upward through the dust cover 3, thus preventing the open side of the dust cover 3 from being completely opened, which would allow more dust to enter. It should be noted that the output ends of the two electric cylinders 7 can be raised and lowered synchronously via a controller.
[0034] like Figure 5 As shown, it should be noted that the length of the thermometer 1 is less than the length of the dust cover 3. Therefore, after the dust baffle 4 moves upward, the portion where the thermometer 1 and the dust cover 3 intersect still needs to be blocked. Thus, the adjusting plate 5 can be moved downward by the adjusting assembly. The adjusting assembly includes a fixed bracket 11, a sliding bracket 12, and bolts 13. Two fixed brackets 11 are provided, both fixedly installed on the side of the dust cover 3. Two threaded holes are provided on the side of the fixed bracket 11. Two vertical sliding grooves are provided on the side of the dust cover 3. The two ends of the sliding bracket 12 are slidably installed in the two sliding grooves. Both adjusting plates 5 are fixedly installed on the side of the sliding bracket 12. Threaded holes are provided on the side of the sliding bracket 12, and bolts 13 are threaded into these holes. Specifically, the moving... The sliding frame 12 moves two adjusting plates 5 downwards, thus blocking the gap between the thermometer 1 and the dust cover 3. Then, the bolts 13 are threaded into the threaded holes of the sliding frame 12 and the fixing frame 11 for fixation, thereby further preventing more dust from entering the dust cover 3. At this time, only the thermometer 1 is exposed, and the staff can make adjustments. If it is not necessary to open the adjustment, the sliding frame 12 is moved upwards, and the adjusting plate 5 is placed inside the dust baffle 4. Because when the threaded hole of the sliding frame 12 corresponds to one of the threaded holes of the fixing frame 11, the adjusting plate 5 is located inside the dust baffle 4, and the bottom of the adjusting plate 5 is at the same horizontal position as the bottom of the dust baffle 4, it can be ensured that the adjusting plate 5 can be fixedly placed when it is inside the dust baffle 4.
[0035] Working principle: When measuring temperature, the limiting groove of the limiting plate 10 of the dust cover 3 is inserted into the limiting block 9, thereby installing the dust cover 3 on the moving frame 2. At this time, the thermometer 1 is located inside the dust cover 3, so the dust cover 3 will not deviate left or right when moving. Then, the device is pushed to the coal mine for subsequent temperature measurement by pushing the push frame 16. Then, the baffle 14 is opened, the optical fiber is inserted into the thermometer 1, and then the temperature is measured by pulling the optical fiber. Because the dust baffle 4 and the dust cover 3 are both made of transparent plastic, the temperature displayed on the display screen of the thermometer 1 can be observed without opening the dust baffle 4 and the dust cover 3. Moreover, the plastic material is lighter than stainless steel and iron products, making it convenient to move.
[0036] When it is necessary to adjust the thermometer 1, start the electric cylinder 7. The output end of the electric cylinder 7 drives the connecting frame 8 to move upward. The connecting frame 8 drives the dust baffle 4 to move upward through the dust cover 3. Then move the sliding frame 12. The sliding frame 12 drives the two adjusting plates 5 to move downward, thereby blocking the difference between the thermometer 1 and the dust cover 3. Then, the bolt 13 is threaded into the threaded holes of the sliding frame 12 and the fixed frame 11 for fixation, thereby further preventing more dust from entering the dust cover 3.
[0037] During temperature measurement, the optical fiber is pulled to different locations underground in the coal mine. The light propagates in the optical fiber and produces various physical effects. The temperature is measured by detecting the changes in these effects with temperature. The specific temperature is then displayed by the thermometer 1.
[0038] It should be noted that the above embodiments are only used to illustrate the technical solutions of this disclosure and are not intended to limit it. Although this disclosure has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this disclosure without departing from the spirit and scope of the technical solutions of this disclosure, and all such modifications and substitutions should be covered within the scope of the claims of this disclosure.
Claims
1. A fiber optic temperature measuring device for monitoring ambient temperature in coal mines, comprising a thermometer (1), wherein the thermometer (1) is mounted on a movable frame (2), characterized in that, Also includes: Dust cover (3), the dust cover (3) is set on the movable frame (2) by a limiting component, and one side of the dust cover (3) is open; Dust baffle (4), the dust baffle (4) is slidably mounted on the dust cover (3) through a lifting assembly; Adjustment plate (5), two adjustment plates (5) are provided, and the two adjustment plates (5) are slidably installed inside the dust cover (3); An adjustment assembly is provided on the side of the dust cover (3), and both adjustment plates (5) are provided on the adjustment assembly.
2. The fiber optic temperature measuring device for monitoring ambient temperature in coal mines according to claim 1, characterized in that, The lifting assembly includes: The protective cover (6) is provided in two parts, and the two protective covers (6) are respectively detachably installed on both sides of the dust cover (3); Electric cylinder (7), two electric cylinders (7) are provided, and the two electric cylinders (7) are respectively installed in the two dust covers (3); There are two connecting frames (8), which are fixedly connected to the output ends of the two electric cylinders (7) respectively, and the other end of the connecting frame (8) is fixedly installed on the top of the dust baffle (4).
3. The fiber optic temperature measuring device for monitoring ambient temperature in coal mines according to claim 2, characterized in that, The limiting component includes: Limiting blocks (9), four limiting blocks (9) are provided, and the four limiting blocks (9) are arranged in pairs, and the two groups of limiting blocks (9) are fixedly installed on the top of the mobile frame (2); Limiting plate (10), both sides of the dust cover (3) are fixedly installed with the limiting plate (10), and the limiting plate (10) is provided with a limiting groove that is compatible with the limiting block (9).
4. The fiber optic temperature measuring device for monitoring ambient temperature in coal mines according to claim 3, characterized in that, The adjustment component includes: Fixing bracket (11), two fixing brackets (11) are provided, both fixing brackets (11) are fixedly installed on the side of the dust cover (3), and two threaded holes are opened on the side of the fixing bracket (11); The sliding frame (12) has two vertically opened sliding grooves on the side of the dust cover (3). The two ends of the sliding frame (12) are respectively slidably installed in the two sliding grooves, and the two adjusting plates (5) are fixedly installed on the side of the sliding frame (12). Bolt (13), the side of the sliding frame (12) is provided with a threaded hole, and the bolt (13) is threadedly installed in the threaded hole.
5. The fiber optic temperature measuring device for monitoring ambient temperature in coal mines according to claim 4, characterized in that, When the threaded hole of the sliding frame (12) corresponds to one of the threaded holes of the fixed frame (11), the adjusting plate (5) is located inside the dust baffle (4), and the bottom end of the adjusting plate (5) is at the same horizontal position as the bottom end of the dust baffle (4).
6. The fiber optic temperature measuring device for monitoring ambient temperature in coal mines according to claim 1, characterized in that, Both the dust baffle (4) and the dust cover (3) are made of transparent plastic.
7. The fiber optic temperature measuring device for monitoring ambient temperature in underground coal mines according to claim 1, characterized in that, The dust baffle (4) has a cable outlet groove on its side, and a baffle (14) is hinged to the cable outlet groove.
8. The fiber optic temperature measuring device for monitoring ambient temperature in coal mines according to claim 1, characterized in that, The bottom of the mobile frame (2) is equipped with several casters (15), and a pusher (16) is fixedly installed on the side of the mobile frame (2).