Device for directly measuring temperature of closed wall

Abstract

A device for directly measuring the temperature of a closed wall belongs to the technical field of coal mine fire prediction, and comprises an exploring tube body used for penetrating through an observation hole of the closed wall and a thermometer used for measuring the temperature of air in the closed wall, the exploring tube body is formed by splicing a plurality of exploring tube split bodies, and the exploring tube split body on one side is used for being held by an inspector as a handheld part; the probe tube split body far away from the handheld part and farthest from the handheld part is a measuring part, a through hole extending in the length direction of the measuring part is formed in the side wall of the measuring part, the thermometer is rotationally arranged in the measuring part, and a plane formed by rotation of the thermometer penetrates through the through hole. The device can enter the closed wall from the observation hole to directly measure the temperature, so that the accuracy of measuring the temperature in the closed wall is improved.

Description

Technical Field

[0001] This utility model relates to the field of coal mine fire prediction technology, specifically a device for direct measurement of temperature in a sealed wall. Background Technology

[0002] Spontaneous combustion is a significant safety hazard in coal mines. According to the "Coal Mine Safety Regulations" and "Coal Mine Fire Prevention and Extinguishing Rules," to prevent spontaneous combustion within the mine's sealed walls, the sealed walls must be designed as double-walled structures, and the gas and temperature inside the walls must be manually checked weekly. Generally, to enhance airtightness, the thickness of a single wall should not be less than 0.5m, the distance between double walls should be 1.0m, and space should be reserved for filling with loess or chemical gel. Observation holes installed during the construction of the sealed walls must penetrate the entire sealed wall.

[0003] In actual sealed-wall inspection work, manually measuring the air temperature inside a sealed wall is extremely inconvenient. Due to the small diameter and long depth of the observation hole, most temperature measuring tools cannot currently be inserted into the wall for measurement. Measurements must be taken at the opening of the observation hole or by extracting the internal gas using a vacuum pump. This results in indirect and inaccurate temperature measurements, and the operation is also extremely inconvenient. This not only affects the accuracy of temperature measurements inside sealed walls but also reduces the efficiency of mine safety inspections and increases the risks to mine safety management. Utility Model Content

[0004] To address the problems of inconvenient operation and inaccurate temperature measurement results in existing technologies, this invention provides a direct temperature measurement device for sealed walls. This device allows direct temperature measurement inside the sealed wall through an observation hole, improving the accuracy of temperature measurement within the sealed wall.

[0005] To achieve the above objectives, the specific solution adopted by this utility model is as follows: a direct temperature measurement device for a sealed wall, comprising a probe body for passing through an observation hole in the sealed wall and a thermometer for measuring the air temperature inside the sealed wall. The probe body is formed by splicing together multiple probe sections, with one side of the probe section for the inspector to hold as the handhold part, and the probe section furthest from the handhold part as the measuring part. A through hole extending along the length direction is opened on the side wall of the measuring part, and the thermometer is rotatably installed inside the measuring part, with the plane formed by the rotation of the thermometer passing through the through hole.

[0006] As an optimized solution for the aforementioned sealed wall temperature direct measurement device: the outer wall of the thermometer is covered with a protective cover.

[0007] As an alternative optimization of the aforementioned sealed wall temperature direct measurement device, an observation hole for observing the thermometer reading is provided on the side wall of the protective cover along the length of the thermometer.

[0008] As an alternative optimization of the aforementioned direct temperature measurement device for a sealed wall, the bottom of the protective cover is provided with multiple diffusion holes for exchanging gases inside and outside the protective cover.

[0009] As an alternative optimization of the aforementioned direct temperature measurement device for a sealed wall, the top of the protective cover is provided with a cap that can be detachably connected to it.

[0010] As an alternative optimization of the aforementioned direct temperature measurement device for a sealed wall: a connecting rod is fixedly provided at the top of the cap, and the connecting rod is rotatably connected to the measuring part via a rotating shaft.

[0011] As an alternative optimization of the aforementioned direct temperature measurement device for a sealed wall, both ends of the rotating shaft are fitted with limiting balls.

[0012] As another optimized solution for the aforementioned direct temperature measurement device for a sealed wall, multiple probes are connected by threads.

[0013] As another optimized solution for the above-mentioned direct temperature measurement device for a sealed wall: the handheld part is provided with an indicator cap, and the indicator cap is provided with an indicator mark that is in the same vertical plane as the axis of the through hole, and the vertical plane passes through the center of the probe body.

[0014] As another optimized solution for the above-mentioned direct temperature measurement device for a sealed wall: both the probe body and the protective cover are made of copper.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1) This utility model provides a device for direct temperature measurement of a sealed wall. The thermometer is rotated in the measuring section and rotates towards the through hole. The inspector holds the measuring section and inserts it into the sealed wall. The probe body is rotated so that the through hole faces downward. The thermometer extends out of the measuring section by its own weight and directly measures the air temperature inside the wall. The thermometer stays in the sealed wall for a moment. The probe body is then rotated in the opposite direction so that the through hole faces upward. The thermometer deflects into the measuring section. The measuring section is then pulled out of the sealed wall, and the value on the thermometer is read, completing the temperature measurement inside the sealed wall. This device can provide more realistic and accurate temperature data, providing a reliable basis for mine safety inspections.

[0017] 2) In this utility model, the outer wall of the thermometer is covered with a protective cover, and a diffusion hole is provided at the bottom of the protective cover, so as to prevent the thermometer from being damaged during use and to allow the thermometer to have effective contact with the gas inside the sealed wall.

[0018] 3) In this utility model, the cap on the top of the protective cover is detachably connected to the protective cover, which facilitates the maintenance and replacement of the thermometer and extends the overall service life of the device. Attached Figure Description

[0019] Figure 1 This is a structural diagram of the measuring section;

[0020] Figure 2 This is a structural diagram of the measuring unit during operation;

[0021] Figure 3 This is a schematic diagram of the probe's modular structure;

[0022] Figure 4 This is a partial schematic diagram of the handheld part;

[0023] Reference numerals in the attached drawings: 1. Probe body, 101. Probe body, 1011. Through hole, 2. Thermometer, 3. Protective cover, 301. Observation hole, 302. Diffuser hole, 4. Cap, 5. Connecting rod, 6. Rotating shaft, 7. Limiting ball, 8. Indicator cap. Detailed Implementation

[0024] The technical solution of this utility model will be further described in detail below with reference to specific embodiments. Parts not described or disclosed in detail in the following embodiments of this utility model should be understood as prior art known or should be known by those skilled in the art.

[0025] Example 1

[0026] like Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a direct temperature measurement device for a sealed wall includes a probe body 1 for passing through an observation hole in the sealed wall and a thermometer 2 for measuring the air temperature inside the sealed wall. In this invention, the probe body 1 is made of copper, which can prevent the generation of static sparks that could cause a gas explosion inside the sealed wall. The probe body 1 is formed by splicing multiple probe segments 101. The length of each probe segment 101 can be customized according to actual needs. Multiple probe segments 101 are sequentially spliced ​​together by threaded connections to form a complete probe body 1. The threaded connection structure is simple, easy to assemble and disassemble, and ensures the firmness of the connection. During the connection process, it is ensured that the threads between each probe segment 101 are tightly fitted to avoid loosening.

[0027] The probe body 1 has a handheld portion 101 on one side for the inspector to hold, and a measuring portion on the other side, furthest from the handheld portion. A through-hole 1011 extending along the length of the measuring portion is provided on its side wall. The thermometer 2 is rotatably mounted inside the measuring portion, and the plane formed by the rotation of the thermometer 2 passes through the through-hole 1011. The width of the through-hole 1011 is greater than the diameter of the thermometer 2, ensuring that the measuring end of the thermometer 2 is fully exposed to the air within the sealed wall, thereby accurately measuring the temperature.

[0028] The above are the basic embodiments of this utility model. Further improvements, optimizations, and limitations can be made based on the above to obtain the following embodiments:

[0029] Example 2

[0030] This embodiment is an improvement on embodiment 1. Its main structure is the same as that of embodiment 1, but the improvement lies in:

[0031] like Figure 1 , Figure 2 As shown, a protective cover 3 covers the outer wall of the thermometer 2. The outer diameter of the protective cover 3 is smaller than the width of the through hole 1011 to prevent collision with the through hole 1011 during rotation. In this invention, the protective cover 3 is made of copper to ensure overall structural strength and corrosion resistance. The shape of the protective cover 3 matches the shape of the thermometer 2, and the inner diameter of the protective cover 3 is larger than the outer diameter of the thermometer 2 so that the thermometer 2 can be placed inside the protective cover 3.

[0032] An observation hole 301 for observing the temperature reading of the thermometer 2 is provided on the side wall of the protective cover 3 along the length of the thermometer 2. The size of the observation hole 301 should be large enough to clearly and completely observe the temperature reading of the thermometer 2. The shape of the observation hole 301 is long and narrow, and its position corresponds to the scale of the thermometer 2, so that the inspector can quickly read the temperature value during the measurement process.

[0033] The bottom of the protective cover 3 has multiple diffusion holes 302 for exchanging gases inside and outside the cover. In this invention, the diameter of the diffusion holes 302 is smaller than the diameter of the thermometer 2. There are two diffusion holes 302: one is located at the bottom of the protective cover 3, and the other is located on the side wall of the bottom of the protective cover 3. The diffusion holes 302 can promote the exchange of gases inside and outside the protective cover 3, so that the air temperature inside the protective cover 3 is consistent with the air temperature inside the sealed wall, thereby ensuring the accuracy of the thermometer 2 measurement.

[0034] The protective cover 3 has a cap 4 detachably connected to its top. The cap 4 and the protective cover 3 can be detachably connected via threaded connection or snap-fit ​​connection. A connecting rod 5 is fixedly mounted on the top of the cap 4. In this invention, the connecting rod 5 is made of copper, and a mounting hole is provided on the connecting rod 5. The axis of the mounting hole is perpendicular to the axis of the connecting rod 5. The connecting rod 5 is rotatably connected to the measuring part via a rotating shaft 6. Specifically, the rotating shaft 6 passes through the mounting hole, and its two ends are mounted on the inner wall of the measuring part. The rotating shaft 6 is made of copper, and its axis is perpendicular to the central axis of the measuring part.

[0035] Both ends of the rotating shaft 6 are sleeved with limiting balls 7. In the present utility model, the limiting balls 7 are made of copper. The limiting balls 7 can limit the rotation angle of the connecting rod 5 and prevent it from rotating excessively and being unable to be transferred into the measuring part by the self-gravity of the thermometer 2 and the protective cover 3.

[0036] Embodiment 3

[0037] This embodiment is an improved scheme based on Embodiment 1. Its main structure is the same as that of Embodiment 1. The improvement lies in:

[0038] As Figure 4 shown, the handheld part is provided with an indicating cap 8, and the indicating cap 8 is provided with an indicating mark in the same vertical plane as the axis of the through hole 1011. The vertical plane passes through the center of the probe body 1. In the present utility model, the words "probe" and "measure" are marked on the left and right of the indicating cap 8 respectively, and the two words are mirror-inverted relative to each other. When the word "probe" is upright, it indicates that the thermometer 2 has been retracted into the measuring part, and the probe body 1 can be normally inserted into the sealed wall or pulled out of the sealed wall. After the probe body 1 is inserted into the sealed wall, rotate the probe body 1 to make the word "measure" upright, indicating that the thermometer 2 has extended from the measuring part and is in a hanging working state. Through the indicating cap 8, personnel can operate accurately without error.

[0039] The working process of the measuring device: The inspector holds the handheld part and inserts the probe body 1 through the observation hole of the sealed wall, so that the measuring part extends into the待测区域 within the sealed wall. According to the indicating mark on the indicating cap 8, rotate the probe body 1 to make the word "measure" upright, indicating that the through hole 1011 is facing downwards and the thermometer 2 has extended from the measuring part by its own gravity and is in a hanging working state, so that the measuring end of the thermometer 2 can accurately point to the待测空气区域. The thermometer stays in the sealed wall for a moment, and rotate the probe body 1 in the reverse direction to make the word "probe" upright, then the through hole 1011 is facing upwards, indicating that the thermometer 2 has deflected into the measuring part, and the probe body 1 can be normally pulled out of the sealed wall, read the value on the thermometer 2, and complete the measurement of the temperature inside the sealed wall.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to these embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A device for direct temperature measurement of a sealed wall, comprising a probe body (1) for passing through an observation hole in the sealed wall and a thermometer (2) for measuring the temperature of the air inside the sealed wall, characterized in that: The probe body (1) is formed by splicing together multiple probe segments (101). The probe segment (101) on one side for the inspector to hold is the handhold part, and the probe segment (101) farthest from the handhold part is the measuring part. A through hole (1011) extending along its length is provided on the side wall of the measuring part. The thermometer (2) is rotatably installed inside the measuring part, and the plane formed by the rotation of the thermometer (2) passes through the through hole (1011).

2. The device for direct temperature measurement of a sealed wall as described in claim 1, characterized in that: The thermometer (2) has a protective cover (3) covering its outer wall.

3. The device for direct temperature measurement of a sealed wall as described in claim 2, characterized in that: The protective cover (3) has an observation hole (301) on its side wall along the length of the thermometer (2) for observing the thermometer reading.

4. The device for direct temperature measurement of a sealed wall as described in claim 2, characterized in that: The bottom of the protective cover (3) is provided with multiple diffusion holes (302) for exchanging gases inside and outside the protective cover.

5. The device for direct temperature measurement of a sealed wall as described in claim 2, characterized in that: The protective cover (3) has a cap (4) that is detachably connected to it.

6. The device for direct temperature measurement of a sealed wall as described in claim 5, characterized in that: The top of the cap (4) is fixedly provided with a connecting rod (5), and the connecting rod (5) is rotatably connected to the measuring part through a rotating shaft (6).

7. The device for direct temperature measurement of a sealed wall as described in claim 6, characterized in that: Both ends of the rotating shaft (6) are fitted with limiting balls (7).

8. The device for direct temperature measurement of a sealed wall as described in claim 1, characterized in that: Multiple probe sections (101) are connected by threads.

9. The device for direct temperature measurement of a sealed wall as described in claim 1, characterized in that: The handheld part is provided with an indicator cap (8), and the indicator cap (8) is provided with an indicator mark that is on the same vertical plane as the axis of the through hole (1011), and the vertical plane passes through the center of the probe body (1).

10. The device for direct temperature measurement of a sealed wall as described in claim 1, characterized in that: The probe body (1) is made of copper.

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