Optical fiber temperature sensing and monitoring device

Abstract

The utility model discloses an optical fiber temperature sensing and monitoring device, which comprises a loading frame arranged in a monitoring chamber, an optical fiber temperature measurement transmitter arranged on the loading frame, a temperature measurement optical fiber cable connected to an optical fiber signal joint of the optical fiber temperature measurement transmitter, and a temperature sensing head hermetically fixed at one end of the temperature measurement optical fiber cable, the temperature measuring optical fiber line is sleeved with a supporting sealing piece, the supporting sealing piece is arranged on the outer edge of the inner hole in a sealed mode, and a line sealing mechanism is arranged on the other side of the supporting sealing piece. A side supporting mechanism is further fixedly arranged on the side of the inner hole and used for laterally supporting and supporting the sealing piece and clamping and supporting the temperature measuring optical fiber cable. According to the technical scheme of the utility model, the contact state of the temperature sensing head to the inner bottom of the inner hole can be stabilized under the conditions of the influence of the operation vibration of the mining machinery and the touch of the temperature measurement optical fiber cable, and the influence of the roadway air temperature environment to the inner hole temperature environment can be reduced, thereby reducing the influence on the temperature measurement effectiveness.

Description

Technical Field

[0001] The utility model belongs to the technical field of temperature monitoring, and particularly relates to an optical fiber temperature sensing and monitoring device. Background Art

[0002] The optical fiber temperature sensor monitoring device uses the principle that the spectrum absorbed by some substances changes with temperature, analyzes the spectrum transmitted by the optical fiber to understand the real-time temperature. The main devices include a temperature-measuring optical fiber line, a temperature-sensing head sealed and fixed at the head of the temperature-measuring optical fiber, and an optical fiber temperature transmitter with a spectrum analysis unit and a calculation unit.

[0003] It contacts the object to be measured through the temperature-sensing head, conducts heat to the temperature-sensitive coating between the optical fibers in the temperature-measuring optical fiber line and then to the optical fiber. The optical fiber temperature transmitter makes the light energy input from one optical fiber and output from another optical fiber through the reflecting surface. Since this new temperature-sensitive material is affected by temperature, the spectrum analysis unit analyzes the refractive index change value, and the calculation unit calculates the temperature value through the functional relationship between the output optical power and temperature. The obtained temperature value has a small error. And because the outside of the temperature-measuring optical fiber line is coated with thin-walled stainless steel, it can adapt to the temperature measurement work in different environments.

[0004] The most common application is to use the optical fiber temperature sensing and monitoring device in the roadway of an underground rock mining area to monitor the temperature of the rock sidewall, so as to intervene the temperature data into the safety analysis of the area. The installation method is as follows: First, use a percussion drill to open an inner hole in the rock sidewall, clean out the rock debris in the inner hole, tightly insert the temperature-measuring head into the inner hole, arrange the temperature-measuring optical fiber line along the mining area roadway, and lay it to the monitoring room to connect with the optical fiber signal connector of the optical fiber temperature transmitter. The optical fiber temperature transmitter is divided into multiple connections, and its signal access end is connected to the computer through a signal line, so as to display the temperature of each area of the rock mining area roadway through the computer.

[0005] However, the environment in the underground rock mining area is relatively complex. Especially under the influence of the operation vibration of the mining machinery and when the temperature-measuring optical fiber line is touched, it is easy for the temperature-sensing end of the temperature-measuring head to be separated from the contact with the bottom of the inner hole; secondly, the sealing and heat insulation performance of the cooperation between the temperature-measuring head and the inner hole is not good, and it is easy for the temperature-sensing surface of the temperature-measuring head to be affected by the air temperature in the roadway, thus affecting the temperature measurement effectiveness. Content of the Utility Model

[0006] The purpose of the utility model is to provide an optical fiber temperature sensing and monitoring device to solve the problems existing in the prior art.

[0007] To achieve the above object, the utility model provides the following technical solution: An optical fiber temperature sensing and monitoring device, comprising a loading rack installed in a monitoring room, an optical fiber temperature measuring transmitter installed on the loading rack, a temperature measuring optical fiber line connected to the optical fiber signal connector of the optical fiber temperature measuring transmitter, and a temperature sensing head hermetically fixed at one end of the temperature measuring optical fiber line. A support sleeve is sleeved on the temperature sensing head, and the support sleeve elastically supports an inner hole formed on the side of the rock. A temperature guiding gasket is arranged on the temperature sensing surface of the temperature sensing head, and the temperature guiding gasket supports on the bottom of the inner hole. A support sealing piece is sleeved on the temperature measuring optical fiber line, and the support sealing piece is hermetically arranged on the outer edge of the inner hole. A wire seal is arranged inside the support sealing piece, and the inner wall of the wire seal is in sliding contact with the outer wall of the temperature measuring optical fiber line. A plurality of support clamping plates are circumferentially and uniformly arranged on one side of the support sealing piece, and the support clamping plates elastically support on the inner wall of the inner hole. A wire sealing mechanism is arranged on the other side of the support sealing piece, and the wire sealing mechanism is used for effectively sealing the insertion and cooperation part of the support sealing piece and the temperature measuring optical fiber line;

[0008] A side support mechanism is further fixedly arranged on the side of the inner hole, and the side support mechanism is used for laterally supporting the support sealing piece and clamping and supporting the temperature measuring optical fiber line.

[0009] Preferably, a support sleeve is arranged on one side of the temperature sensing head, a spring is sleeved on the temperature measuring optical fiber line, and two ends of the spring respectively support in the support sleeve and on the wire seal.

[0010] Preferably, the support clamping plate is of an arc-shaped plate structure, and anti-slip protrusions are uniformly arranged on the support clamping plate.

[0011] Preferably, a slot is arranged on the support sealing piece, a sealing ring is arranged in the slot, and the sealing ring adheres to the edge of the inner hole.

[0012] Preferably, the wire sealing mechanism comprises a storage tube arranged on the other side of the support sealing piece, a sealing filling layer is arranged in the storage tube, a top sealing cover is locked at one end of the storage tube, a pressing convex ring is arranged in the top sealing cover and presses in the sealing filling layer, and a soft sealing ring is arranged on the inner bottom of the top sealing cover and presses on the end of the storage tube.

[0013] Preferably, the side support mechanism comprises an expansion bolt installed in an installation hole on the rock and close to the inner hole, a connecting rod is connected to the screw part of the expansion bolt, an outer support frame is connected to the connecting rod, the bottom of the outer support frame is connected to a support wire clamp through a connecting plate, the number of the support wire clamps is at least two, one end of the outer support frame is connected to one of the support wire clamps, an inner pressing ring layer is arranged on the inner wall of the inner ring of the support wire clamp, and the support wire clamps are fixed to each other through screws.

[0014] Preferably, a connecting rod is connected to one side of the outer support frame, a panel is arranged at one end of the connecting rod, an RFID tag is attached to the panel, and a transparent sealing cover is further installed on the panel and the RFID tag is covered by the transparent sealing cover.

[0015] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0016] This kind of optical fiber temperature sensing and monitoring device can stabilize the contact state of the temperature sensing head with the inner bottom of the inner hole under the influence of the vibration of the mining machinery operation and when the temperature measuring optical fiber line is touched, and can reduce the influence of the roadway air temperature environment on the inner hole temperature environment, thereby reducing the influence on the temperature measuring effectiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the main view of the present utility model with partial sectioning;

[0018] Figure 2 is Figure 1 the enlarged structural schematic diagram at position a of

[0019] Figure 3 It is a schematic diagram of the connection of the support sealing piece of the present utility model;

[0020] Figure 4 It is a schematic diagram of the top sealing cover of the present utility model;

[0021] Figure 5 It is a schematic diagram of the connection of the wire support clip of the present utility model.

[0022] In the figure: 1 loading rack, 2 optical fiber temperature measuring transmitter, 3 temperature measuring optical fiber line, 4 temperature sensing head, 5 support sleeve, 6 heat conduction gasket, 7 support sealing piece, 8 wire seal, 9 support clamping plate, 10 support sleeve, 11 spring, 12 sealing ring, 14 top sealing cover, 15 pressing convex ring, 16 storage tube, 17 sealing filling layer, 18 expansion bolt, 19 outer support frame, 20 connecting plate, 21 wire support clip, 22 inner pressing ring layer, 23 screw, 24 connecting rod, 25 panel, 26 transparent sealing cover, 901 anti-slip convex. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model.

[0024] Refer to Figure 1 and Figure 2As shown, the embodiment of the utility model provides an optical fiber temperature sensing monitoring device, including a loading rack 1 installed in a monitoring room, an optical fiber temperature measuring transmitter 2 installed on the loading rack 1, a temperature measuring optical fiber line 3 connected to the optical fiber signal connector of the optical fiber temperature measuring transmitter 2, and a temperature sensing head 4 sealed and fixed at one end of the temperature measuring optical fiber line 3, the temperature sensing head 4 is sleeved with a support sleeve 5, the support sleeve 5 is made of rubber-plastic sponge, and has good thermal insulation performance, the support sleeve 5 elastically supports the inner hole opened on the side of the rock, and the outer wall of the support sleeve 5 elastically presses on the inner wall of the inner hole to form lateral support protection for the temperature sensing head 4. The left temperature sensing surface of the temperature sensing head 4 is bonded with a temperature conductive gasket 6 by a temperature conductive adhesive, the material of the temperature conductive gasket 6 is a temperature conductive cotton, and the temperature conductive gasket 6 is pressed on the inner bottom of the inner hole. A support seal 7 is sleeved on the temperature measuring optical fiber line 3, and the support seal 7 is sealingly arranged on the outer edge of the inner hole, and a wire seal 8 is integrally arranged in the support seal 7, and the inner wall of the wire seal 8 slides in contact with the outer wall of the temperature measuring optical fiber line 3, and the support seal 7 and the wire seal 8 are made of heat-insulating plastic; a support clamping plate 9 is evenly and integrally arranged on the left side of the support seal 7 in an annular direction, and the support clamping plate 9 is elastically supported on the inner wall of the inner hole, and when the support clamping plate 9 is elastically supported on the inner wall of the inner hole, lateral support for the support seal 7 is achieved, and a wire sealing mechanism is arranged on the other side of the support seal 7, and the wire sealing mechanism is used to effectively seal the insertion and matching place of the support seal 7 and the temperature measuring optical fiber line 3;

[0025] Under such a setting, not only can the temperature sensing head 4 be supported in the inner hole, but also the inner hole port can be sealed and isolated, effectively reducing the influence of the external air temperature environment on the temperature sensing end of the temperature sensing head 4.

[0026] A side support mechanism is also fixedly provided on the side of the inner hole, and the side support mechanism is used to laterally support the sealing sheet 7 and clamp and support the temperature measuring optical fiber line 3.

[0027] Under the action of the side support mechanism, when the temperature measuring optical fiber line is touched, the temperature sensing surface of the temperature sensing head 4 will not be driven out of contact with the inner bottom of the inner hole, and the support sealing piece 7 is achieved to stabilize the installation state of the support sealing piece 7.

[0028] See also Figure 1 and Figure 2 A support sleeve 10 is integrally provided on the right side of the temperature sensing head 4, and a spring 11 is provided on the temperature measuring optical fiber line 3. The spring 11 is a compression rebound type, and the initial compression rebound force of the spring 11 is 20 Newtons. The two ends of the spring 11 are supported in the support sleeve 10 and on the wire seal 8 respectively.

[0029] When the temperature-measuring optical fiber line 3 is inserted into the inner hole, a certain margin is given to the temperature-measuring optical fiber line 3 in the inner hole, and this margin satisfies that when the temperature-sensing head 4 is in effective contact with the inner bottom of the inner hole, the temperature-measuring optical fiber line 3 is in a bent state in the inner hole. The selected length of the spring 11 lies in that when the support splint 9 is completely driven into the inner hole, the spring 11 is in a compressed state. Under such a setting, when there are vibrations generated by mining in the underground rock mining roadway, through the elastic support of the spring 11, the temperature-sensing head 4 is kept in contact with the inner bottom of the inner hole.

[0030] Refer to Figure 3 , the support splint 9 is of an arc-shaped plate structure, and anti-slip protrusions 901 are uniformly arranged on the support splint 9.

[0031] When the four support splints 9 are driven into the inner hole, with the setting of the anti-slip protrusions 901, the cooperation resistance between the support splint 9 and the inner wall of the inner hole is increased, making the stability under the support of the support splint 9 higher.

[0032] Refer to Figure 2 , a slot is provided on the support sealing piece 7. The slot is an annular groove, and a sealing ring 12 is arranged in the slot. The sealing ring 12 is a sticky rubber ring, and the sealing ring 12 is attached to the edge of the inner hole. It is worth mentioning that before installing this monitoring device on the outer edge of the inner hole, a hand-held grinding machine can be used to grind it flat, and the rock debris in the inner hole can be cleaned out.

[0033] When the support splint 9 is driven into the inner hole, the support sealing piece 7 effectively presses the sealing ring 12 on the edge of the inner hole, thereby ensuring the sealing performance of the cooperation between the support sealing ring 7 and the edge of the inner hole and preventing external air from entering the inner hole through the cooperation part between the support sealing piece 7 and the edge of the inner hole.

[0034] Refer to Figure 2 、 Figure 3 and Figure 4 , the wire sealing mechanism includes a storage tube 16 integrally arranged on the right side of the support sealing piece 7. A sealing filling layer 17 is loaded into the storage tube 16. The sealing filling layer 17 is compacted by nano-scale polystyrene powder and has good heat preservation performance and sealing performance. A top sealing cover 14 is threadedly locked at the right end of the storage tube 16. The top sealing cover 14 slidably sleeved on the temperature-measuring optical fiber line 3. A pressing convex ring 15 is integrally arranged in the top sealing cover 14 and the pressing convex ring 15 presses tightly in the sealing filling layer 17. A soft sealing ring is bonded to the inner bottom of the top sealing cover 14. The material of the soft sealing ring is neoprene, and the soft sealing ring presses tightly at the end of the storage tube 16.

[0035] It is locked on the storage tube 16 through the top cover 14, so that the embossed ring 15 is pressed tightly in the sealing filler layer 17, thereby making the sealing filler layer 17 effectively compact the plugging area of the line seal 8 and the temperature measurement optical fiber line 3, the plugging area of the top cover 14 and the temperature measurement optical fiber line 3, and the matching area of the top cover 14 and the storage tube 16, effectively ensuring the heat preservation of the sealing performance of the temperature measurement optical fiber line and the support sealing piece 7. In addition, under the tight wrapping of the sealing filler layer 17, the anti-touch stability of the temperature measurement optical fiber line 3 at the inner hole is also improved.

[0036] Refer to Figure 2 and Figure 5 , the side support mechanism includes an expansion bolt 18 installed in the mounting hole on the rock and near the inner hole. A screw rod part of the expansion bolt 18 is screwed with an outer support frame 19. A wire support clip 21 is arranged at the bottom of the outer support frame 19. The number of the wire support clips 21 is two. A connecting plate 20 is welded to the bottom of the outer support frame 19. The connecting plate 20 is integrally provided with one wire support clip 21. An inner pressure ring layer 22 is adhered to the inner wall of the inner ring of the wire support clip 21. The inner pressure ring layer 22 is a semi-circular ring structure. The material of the inner pressure ring layer 22 is chloroprene rubber. The wire support clips 21 are fixed to each other by screws 23.

[0037] When the screw 23 is locked on the two wire support clips 21, the inner pressure ring layer 22 is pressed tightly on the temperature measurement optical fiber line 3 to realize the steady holding of the temperature measurement optical fiber line 3. In addition, by supporting the right end of the top cover 14 through the wire support clip 21, the lateral support of the support sealing piece 7 is further provided. When there is vibration generated by mining in the underground rock mining roadway, the support sealing piece 7 can be more stably attached to the outer edge area of the inner hole.

[0038] Refer to Figure 2 and Figure 5 , a connecting rod 24 is welded to the right side of the outer support frame 19. A panel 25 is integrally arranged at the right end of the connecting rod 24. An RFID tag is used to be attached to the panel 25. A transparent cover 26 is also fixed to the panel 25 by screws and the RFID tag is covered by the transparent cover 26. The material of the transparent cover 26 is polyethylene plastic. With such a setting, it can be used to check whether the RFID tag has been attached to the panel 25, and under the isolation of the transparent cover 26, the integrity of the RFID tag in a complex environment is protected.

[0039] The RFID reader encodes numbers and position information for each RFID tag. Therefore, when the temperature sensing head 4 and the temperature measurement optical fiber line 3 are installed in different areas of the inner wall of the underground rock roadway, by identifying each RFID tag through the RFID tag reader, it is convenient to find the specific positions of the temperature sensing head 4 and the temperature measurement optical fiber line 3.

[0040] The working principle of this embodiment is as follows: When the elastic support of the supporting splint 9 is on the inner wall of the inner hole, it realizes the lateral support for the supporting sealing piece 7. In addition, it is supported by the side support mechanism at the right end of the top cover 14 to further support the lateral support of the sealing piece 7. When there is vibration generated by mining in the underground rock mining roadway, the supporting sealing piece 7 can be more stably attached to the outer edge area of the inner hole. When there is vibration generated by mining in the underground rock mining roadway, through the elastic support of the spring 11, the temperature sensing head 4 is kept in contact with the inner bottom of the inner hole; and under the steady holding of the side support mechanism on the temperature measuring optical fiber line 3, on the one hand, it can avoid the temperature sensing head 4 being separated from the contact with the inner bottom of the inner hole due to touching the temperature measuring optical fiber line 3 in the inner hole area. With the setting of the online sealing mechanism, the intersection of the supporting sealing piece 7 and the temperature measuring optical fiber line 3 is effectively sealed, blocking the contact between the inner hole and the air environment in the roadway, improving the sealing isolation at the inner hole port, and reducing the influence on the temperature measuring effectiveness.

[0041] The above is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention.

Claims

1. An optical fiber temperature sensing monitoring device, comprising a loading rack (1) installed in a monitoring room, an optical fiber temperature measuring transmitter (2) installed on the loading rack (1), a temperature measuring optical fiber line (3) connected to an optical fiber signal connector of the optical fiber temperature measuring transmitter (2), and a temperature sensing head (4) sealed and fixed at one end of the temperature measuring optical fiber line (3), characterized in that: The temperature sensing head (4) is sleeved with a support sleeve (5), and the support sleeve (5) is elastically supported on the inner hole opened on the side of the rock, and the temperature sensing surface of the temperature sensing head (4) is provided with a temperature conductive gasket (6), and the temperature conductive gasket (6) is supported on the bottom of the inner hole, and the temperature measuring optical fiber line (3) is sleeved with a support sealing piece (7), and the support sealing piece (7) is sealingly arranged on the outer edge of the inner hole, and a wire seal (8) is arranged inside the support sealing piece (7), and the inner wall of the wire seal (8) is in sliding contact with the outer wall of the temperature measuring optical fiber line (3), and one side of the support sealing piece (7) is evenly provided with support clamping plates (9) in an annular direction, and the support clamping plates (9) are elastically supported on the inner wall of the inner hole, and the other side of the support sealing piece (7) is provided with a wire sealing mechanism, and the wire sealing mechanism is used to effectively seal the interlaced matching position of the support sealing piece (7) and the temperature measuring optical fiber line (3); A side support mechanism is also fixedly arranged on the side of the inner hole, and the side support mechanism is used to laterally support the sealing sheet (7) and clamp and support the temperature measuring optical fiber line (3).

2. The optical fiber temperature sensing monitoring device according to claim 1, characterized in that: A support sleeve (10) is provided on one side of the temperature sensing head (4), a spring (11) is sleeved on the temperature measuring optical fiber line (3), and two ends of the spring (11) are supported in the support sleeve (10) and on the line seal (8) respectively.

3. The optical fiber temperature sensing monitoring device according to claim 2, characterized in that: The support plate (9) is an arc-shaped plate structure, and anti-slip protrusions (901) are evenly arranged on the support plate (9).

4. The optical fiber temperature sensing monitoring device according to claim 3, characterized in that: The supporting sealing sheet (7) is provided with a groove, a sealing ring (12) is arranged in the groove, and the sealing ring (12) is attached to the edge of the inner hole.

5. The optical fiber temperature sensing monitoring device according to claim 4, characterized in that: The line sealing mechanism comprises a storage tube (16) arranged on the other side of the supporting sealing sheet (7), a sealing filling layer (17) is arranged in the storage tube (16), one end of the storage tube (16) is locked with a top sealing cover (14), a pressing convex ring (15) is arranged in the top sealing cover (14), and the pressing convex ring (15) is pressed in the sealing filling layer (17), and a soft sealing ring is arranged on the inner bottom of the top sealing cover (14), and the soft sealing ring is pressed on the end of the storage tube (16).

6. The optical fiber temperature sensing monitoring device according to claim 5, characterized in that: The side support mechanism comprises an expansion bolt (18) installed in a mounting hole on the rock near the inner hole, the screw portion of the expansion bolt (18) is connected to an external support frame (19), the bottom of the external support frame (19) is connected to a support wire clamp (21) through a connecting plate (20), the number of the support wire clamps (21) is at least two, one end of the external support frame (19) is connected to one of the support wire clamps (21), the inner ring inner wall of the support wire clamp (21) is provided with an inner pressure ring layer (22), and the support wire clamps (21) are fixed to each other by screws (23).

7. The optical fiber temperature sensing monitoring device according to claim 6, characterized in that: A connecting rod (24) is connected to one side of the outer support frame (19), and a panel (25) is provided at one end of the connecting rod (24). The panel (25) is used to attach an RFID tag, and a transparent cover (26) is also installed on the panel (25) and the RFID tag is covered by the transparent cover (26).

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