Cloud chamber temperature monitoring system, temperature detection component and its manufacturing and calibration methods

Abstract

The present invention discloses a cloud chamber temperature monitoring system, a temperature detection component and a manufacturing and calibration method thereof; the temperature detection component includes a sensor component, a sleeve and a protective tube; the sensor component is built in the sleeve, the protective tube is sleeved outside the sleeve, and the protective tube is fixedly sealed with the sleeve; the sensor component includes a plurality of fiber Bragg grating sensors connected in series through optical fibers, the sleeve has cavities with the same number as the fiber Bragg grating sensors along its length direction, two adjacent cavities are sealed and isolated, and each cavity is provided with one fiber Bragg grating sensor. The structural setting of the temperature detection component can realize distributed measurement of the internal space of the cloud chamber, and the networking is convenient. At the same time, it can realize real-time, fast and accurate temperature measurement without interfering with the cloud chamber experiment.

Description

Technical Field

[0001] The present invention relates to the technical field of weather modification, and particularly to a cloud chamber temperature monitoring system, a temperature detection component, and a manufacturing and calibration method thereof. Background Art

[0002] A cloud chamber is a comprehensive experimental system that simulates the atmospheric environment and is the main equipment for studying cloud physics, the growth process of artificial precipitation particles (hail, raindrops), cold and warm clouds, and the macro and micro effects of different catalysts on clouds and mists.

[0003] The main structure of the cloud chamber is a sealed container, and the above various weather phenomena are studied by simulating the atmospheric environment in the sealed container. To well simulate the real weather environment and various weather phenomena, the cloud chamber usually needs to have a large space. For example, the main body of the large cloud chambers currently in service in China is a sealed container with a diameter of 2.8 meters, a height of 14 meters, and a volume of 150 cubic meters.

[0004] In the study of cloud chambers, it is necessary to measure the dynamic environmental temperature to quickly record the temperature change of specific physical phenomena in a very short time.

[0005] During the experiment, the atmospheric temperature change inside the cloud chamber is not consistent as a whole and there are differences on the spatial scale. This difference is one of the important contents of cloud chamber research. To pay attention to the temperature change in the space of the cloud chamber, it is necessary to arrange a large number of temperature measurement points within the space range of the cloud chamber. Through the temperature measurement points at different positions, the monitoring of the spatial temperature change is realized. In this way, it is necessary to uniformly network the temperature detection units of each temperature measurement point, which will use a large number of connecting wires, not only occupying the internal space of the cloud chamber but also affecting the temperature measurement; in addition, a large number of temperature detection units will not only bring difficulties to networking but also require a large number of power supply and data interfaces, resulting in poor synchronization of data acquisition and a high failure rate.

[0006] In addition, since the atmospheric temperature range involved in cloud chamber research is usually from -50°C to room temperature, and there is also a strong wind effect inside the cloud chamber, the requirements for temperature detection components are also very high.

[0007] For the above reasons, the current monitoring of the cloud chamber temperature only stays at the measurement of local temperature points.

[0008] Therefore, how to design a cloud chamber temperature monitoring system that can monitor the temperature inside the cloud chamber in real time, quickly, and accurately, and is convenient for networking and can monitor the spatial distribution of the temperature inside the cloud chamber is a technical problem that those skilled in the art need to solve currently. Summary of the Invention

[0009] The object of the present invention is to provide a temperature detection component for a cloud chamber and a method for making and calibrating the same. The structural setting of the temperature detection component can realize distributed measurement of the internal space of the cloud chamber, and is convenient for networking. At the same time, it can realize real-time, fast and accurate temperature measurement without interfering with the cloud chamber experiment.

[0010] Another object of the present invention is to provide a cloud chamber temperature monitoring system comprising the above-mentioned temperature detection component.

[0011] In order to solve the above technical problems, the present invention provides a temperature detection component for a cloud chamber, comprising a sensor component, a sleeve and a protective tube; the sensor component is built in the sleeve, the protective tube is externally mounted on the sleeve, and the protective tube and the sleeve are sealed and fixed;

[0012] The sensor component includes a plurality of fiber grating sensors connected in series through optical fibers. The sleeve has cavities along its length direction, the number of which is the same as that of the fiber grating sensors. Two adjacent cavities are sealed and isolated, and one fiber grating sensor is arranged in each cavity.

[0013] The temperature detection component includes a sensor component, a sleeve and a protective tube, wherein the main body of the sensor component is a fiber Bragg grating series sensor, which is packaged and protected by the sleeve and the protective tube, so that the fiber Bragg grating series sensor can adapt to various experimental conditions in the cloud chamber without being damaged, so that the fiber Bragg grating series sensor can be used in the cloud chamber for temperature detection, thereby ensuring real-time, fast and accurate temperature monitoring in the cloud chamber; at the same time, the packaged fiber Bragg grating series sensor is easy to network in the cloud chamber and will not affect the normal experiment in the cloud chamber.

[0014] In the temperature detection component as described above, the sleeve is specifically a heat shrinkable tube.

[0015] As the temperature detection component as described above, the sensor component also includes a plurality of anchor tubes arranged at intervals, the anchor tubes are fixedly sleeved on the optical fiber, and a fiber grating sensor is provided between two adjacent anchor tubes; the heat shrinkable tube is shrunk and tightly sleeved on the anchor tube at the position of each anchor tube to form a closed tube cavity between two adjacent anchor tubes.

[0016] In the temperature detection component as described above, the anchoring tube is specifically a stainless steel tube with magnetism.

[0017] In the temperature detection component as described above, the anchoring tube is fixed to the optical fiber by glue potting.

[0018] For the temperature detection component as described above, the optical fiber extends out of the anchoring tube at one outer end by a preset length to form a pigtail, and the optical fiber extends out of the anchoring tube at the other outer end by a set length to form a transmission optical fiber; a sealing material is potted at the end of the heat shrinkable tube close to the pigtail.

[0019] For the temperature detection component as described above, the sealing material is specifically waterproof ointment.

[0020] For the temperature detection component as described above, a plurality of the fiber Bragg grating sensors are arranged at equal intervals, and each of the fiber Bragg grating sensors is located at the axial center of the lumen.

[0021] For the temperature detection component as described above, the protective tube is specifically a non-magnetic stainless steel tube.

[0022] For the temperature detection component as described above, the annular cavity between the protective tube and the sleeve is sealed and fixed by filling with electronic silica gel.

[0023] For the temperature detection component as described above, position marks corresponding to each of the fiber Bragg grating sensors are provided on the outer tube wall of the protective tube.

[0024] The present invention also provides a manufacturing method for a temperature detection component for a cloud chamber, and the manufacturing method includes:

[0025] Prepare a fiber Bragg grating series sensor, a sleeve and a protective tube with set lengths, wherein the fiber Bragg grating series sensor includes a transmission optical fiber, a sensing optical fiber and a pigtail connected in sequence; a plurality of fiber Bragg grating sensors are arranged at intervals on the sensing optical fiber segment;

[0026] Put the sleeve on the fiber Bragg grating series sensor, and at a set distance outside both ends of each of the fiber Bragg grating sensors, fasten the corresponding position of the sleeve to the optical fiber to form a sealed lumen for accommodating each of the fiber Bragg grating sensors;

[0027] After that, put the protective tube outside the sleeve and seal and fix the two.

[0028] The manufacturing method of this temperature detection component realizes the encapsulation of the fiber Bragg grating series sensor. The encapsulated fiber Bragg grating series sensor can adapt to various experimental conditions of the cloud chamber, can prevent water vapor from entering the interior of the fiber Bragg grating sensor, and avoid the optical fiber from freezing and cracking under low-temperature experimental conditions. The temperature detection component made by this manufacturing method can meet the relevant requirements for measuring the space temperature in the cloud chamber.

[0029] For the manufacturing method as described above, the sleeve is specifically a heat shrinkable tube;

[0030] Also prepare a guiding tube and a plurality of anchoring tubes, fixedly sleeve the plurality of anchoring tubes on the fiber Bragg grating series sensor, and arrange one fiber Bragg grating sensor between two adjacent anchoring tubes;

[0031] The method for the heat shrinkable tube to form the tube cavity includes:

[0032] Insert the fiber Bragg grating series sensor fixedly sleeved with the anchoring tubes into the guiding tube;

[0033] Insert the guiding tube containing the fiber Bragg grating series sensor into the heat shrinkable tube, and relatively fix one end of the fiber Bragg grating sensor with the corresponding end of the heat shrinkable tube to form a fixed end;

[0034] Pull the guiding tube outwards relative to the heat shrinkable tube in the direction away from the fixed end until the first anchoring tube close to the fixed end disengages from the guiding tube, heat the area of the heat shrinkable tube corresponding to the first anchoring tube, so that the heat shrinkable tube at the corresponding position shrinks and tightly sleeves on the first anchoring tube; repeat this process until all the anchoring tubes are fastened to the heat shrinkable tube and the guiding tube is completely pulled out.

[0035] In the manufacturing method as described above, the sleeve is specifically a heat shrinkable tube;

[0036] Also prepare a guiding tube and a plurality of anchoring tubes, fixedly sleeve the plurality of anchoring tubes on the fiber Bragg grating series sensor, and arrange one fiber Bragg grating sensor between two adjacent anchoring tubes;

[0037] The method for the heat shrinkable tube to form the tube cavity includes:

[0038] Insert the fiber Bragg grating series sensor fixedly sleeved with the anchoring tubes into the guiding tube;

[0039] Insert the guiding tube containing the fiber Bragg grating series sensor into the heat shrinkable tube, and relatively fix one end of the fiber Bragg grating sensor with the corresponding end of the heat shrinkable tube to form a fixed end;

[0040] Pull the guiding tube outwards relative to the heat shrinkable tube in the direction away from the fixed end until the first anchoring tube close to the fixed end disengages from the guiding tube, heat the area of the heat shrinkable tube corresponding to the first anchoring tube, so that the heat shrinkable tube at the corresponding position shrinks and tightly sleeves on the first anchoring tube;

[0041] Continue to draw out the guiding tube outward until more than one of the anchoring tubes come out of the guiding tube. Clamp the positions of the heat-shrinkable tube corresponding to the first anchoring tube and the position corresponding to the inner end of the guiding tube, and stretch the heat-shrinkable tube to both sides to make its length extend by a set value. Then heat each area of the heat-shrinkable tube corresponding to the positions of the anchoring tubes that come out of the guiding tube this time, so that the heat-shrinkable tube shrinks and tightly sleeves on the anchoring tubes at the corresponding positions. Repeat this process until all the anchoring tubes are fastened to the heat-shrinkable tube, and then completely draw out the guiding tube.

[0042] In the manufacturing method as described above, when heating the area of the heat-shrinkable tube corresponding to the position of the anchoring tube, use heat insulation materials to protect the areas of the heat-shrinkable tube on both sides of the anchoring tube.

[0043] In the manufacturing method as described above, after fastening all the anchoring tubes to the heat-shrinkable tube and completely drawing out the guiding tube, also pour sealing materials at one end of the heat-shrinkable tube close to the pigtail.

[0044] In the manufacturing method as described above, fill the annular space formed between the protective tube and the sleeve with electronic silica gel to seal and fix the two.

[0045] In the manufacturing method as described above, also mark the positions corresponding to each of the fiber Bragg grating sensors on the outer tube wall of the protective tube.

[0046] The present invention also provides a cloud chamber temperature monitoring system, which includes a controller and a plurality of temperature detection components arranged in the inner cavity of the cloud chamber. The temperature detection components are the temperature detection components described in any one of the above; the axial direction of the temperature detection components is parallel to the height direction of the cloud chamber; each of the temperature detection components is communicatively connected to the controller.

[0047] Since the above temperature detection components have the above technical effects, the cloud chamber temperature monitoring system including the temperature detection components also has the same technical effects, which will not be repeated here.

[0048] In the cloud chamber temperature monitoring system as described above, each of the temperature detection components has the same number of fiber Bragg grating sensors, and along the height direction of the cloud chamber, the positions of the fiber Bragg grating sensors of each of the temperature detection components are correspondingly arranged.

[0049] In the cloud chamber temperature monitoring system as described above, a plurality of installation through holes are opened on the top wall of the cloud chamber, and the plurality of installation through holes are in one-to-one cooperation with the plurality of temperature detection components; the transmission fiber ends of the sensor components of the temperature detection components extend out of the corresponding installation through holes to be communicatively connected to the controller.

[0050] For the cloud chamber temperature monitoring system described above, a nut column is fixedly connected inside the installation through-hole, and further includes a bolt that cooperates with the nut column. The upper end of the temperature detection component and the top wall of the cloud chamber are relatively fixed by the mutually cooperating nut column and bolt.

[0051] For the cloud chamber temperature monitoring system described above, a load-bearing block is installed at the lower end of the protective tube of each temperature detection component to ensure that the temperature detection component is in a vertical state.

[0052] For the cloud chamber temperature monitoring system described above, an installation plate is provided at the bottom inside the cloud chamber, and the lower end of the temperature detection component is fixed to the installation plate.

[0053] For the cloud chamber temperature monitoring system described above, the distances of each temperature detection component from the axial center of the cloud chamber are set differently.

[0054] The present invention also provides a calibration method for a temperature detection component used in a cloud chamber. The temperature detection component is the temperature detection component described in any one of the above. The calibration method includes an in-situ calibration method inside the cloud chamber. The in-situ calibration method inside the cloud chamber includes:

[0055] Determine the calibration temperature range and determine multiple calibration temperature points within the calibration temperature range;

[0056] Install the temperature detection component to be calibrated inside the inner cavity of the cloud chamber so that the axial direction of the temperature detection component is parallel to the height direction of the cloud chamber;

[0057] Lower the calibration sensor into the inner cavity of the cloud chamber through the reserved opening at the top of the cloud chamber by means of a pulling rope;

[0058] Control the temperature inside the inner cavity of the cloud chamber to a calibration temperature point, adjust the position of the calibration sensor inside the inner cavity of the cloud chamber through the pulling rope, and make its position correspond to the positions of the multiple fiber Bragg grating sensors of the temperature detection component one by one, so as to calibrate each fiber Bragg grating sensor of the temperature detection component one by one; in the same way, calibrate each fiber Bragg grating sensor of the temperature detection component at other calibration temperature points.

[0059] This calibration method can calibrate the temperature detection component for monitoring the temperature inside the cloud chamber. The main body of this temperature detection component is an encapsulated series fiber Bragg grating sensor. The temperature detection component is vertically arranged inside the cloud chamber. This calibration method can realize the in-situ calibration of the temperature detection component inside the cloud chamber, improving the accuracy of the temperature detection component for monitoring the temperature inside the cloud chamber.

[0060] As described above, in the calibration method, a guiding member is fixedly installed in the inner cavity of the cloud chamber. The length direction of the guiding member is parallel to the height direction of the cloud chamber. The calibration sensor is connected to the guiding member through a locking ring so that the calibration sensor can move up and down along the guiding member.

[0061] As described above, in the calibration method, a weight is further connected to the bottom of the calibration sensor so that the pulling rope connected to the calibration sensor is in a taut state.

[0062] As described above, in the calibration method, the method for adjusting the position of the calibration sensor corresponding to the fiber Bragg grating sensor through the pulling rope includes:

[0063] The calibration sensor is connected below the pulling rope. A plurality of marking points are marked on the pulling rope. The plurality of marking points correspond to the plurality of fiber Bragg grating sensors one by one, and are configured such that when a certain marking point on the pulling rope is located at the top reserved opening, the calibration sensor and the fiber Bragg grating sensor corresponding to the marking point located at the top reserved opening are at the same height.

[0064] As described above, in the calibration method, the method for marking the marking points on the pulling rope includes:

[0065] First, release the pulling rope to lower the calibration sensor to the same height as the lowermost fiber Bragg grating sensor, and mark a first marking point corresponding to the first fiber Bragg grating sensor at the position where the pulling rope is located at the top reserved opening. Then, pull up the calibration sensor to make it at the same horizontal plane as the second fiber Bragg grating sensor adjacent to the first fiber Bragg grating sensor, and mark a second marking point at the position where the pulling rope is located at the top reserved opening at this time. In this way, continuously pull up the calibration sensor until all the marking points corresponding to the fiber Bragg grating sensors are marked on the pulling rope. Description of the Drawings

[0066] Figure 1 It is a schematic structural diagram of a specific embodiment of the temperature detection component provided by the present invention;

[0067] Figures 2 to 4 It shows schematic diagrams of each process of the manufacturing method of the temperature detection component in a specific embodiment;

[0068] Figure 5 It is a schematic structural diagram of a specific embodiment of the temperature monitoring system of the cloud chamber provided by the present invention;

[0069] Figure 6 It shows a schematic diagram of in-situ calibration of the temperature detection component in the cloud chamber in a specific embodiment.

[0070] in, Figures 1 to 6 The one-to-one correspondence between the component names and the reference numerals is as follows:

[0071] Temperature detection component 100, sensor component 110, transmission optical fiber 111, sensing optical fiber 112, fiber grating sensor 1121, pigtail 113, anchoring tube 114, sleeve 120, lumen 121, protection tube 130, sealing material 140, guide tube 150, fixture 160;

[0072] Cloud chamber 200 , nut column 211 , bolt 212 , mounting plate 220 , load-bearing block 230 , controller 300 , calibration sensor 400 , pulling rope 410 , load-bearing object 420 , locking ring 430 , guide component 500 . DETAILED DESCRIPTION

[0073] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0074] For ease of understanding and concise description, the following article will explain the cloud chamber temperature monitoring system, temperature detection components and their manufacturing and calibration methods.

[0075] Please refer to Figure 1 , Figure 1 The figure is a schematic structural diagram of a specific embodiment of the temperature detection component provided by the present invention.

[0076] In this embodiment, the temperature detection component 100 for the cloud chamber includes a sensor component 110, a sleeve 120 and a protective tube 130, wherein the sensor component 110 is built in the sleeve 120, the protective tube 130 is outermostly placed on the sleeve 120, and the protective tube 130 and the sleeve 120 are sealed and fixed, so that the sensor component 110 is equivalent to being encapsulated by the sleeve 120 and the protective tube 130.

[0077] Among them, the sensor component 110 includes a plurality of fiber grating sensors 1121 connected in series through optical fibers, which can also be called a fiber grating series sensor. The fiber grating series sensor specifically includes a transmission fiber 111, a sensing fiber 112 and a pigtail 113 connected in sequence. It can be understood that the transmission fiber 111 is used to communicate with other devices, and the sensing fiber 112 is the part after multiple fiber grating sensors 1121 are connected in series.

[0078] In practice, fiber Bragg grating series sensors can be made of high and low temperature resistant optical fibers with polyimide coatings or metal coatings to adapt to different experimental conditions in cloud chambers.

[0079] Among them, the sleeve 120 has cavities 121 along its length direction, and the number of the cavities 121 is the same as that of the fiber Bragg grating sensors. Two adjacent cavities 121 are sealed and isolated from each other, and a fiber Bragg grating sensor 1121 is arranged in each cavity 121. It can be understood that the fiber Bragg grating series sensors are inserted into the sleeve 120, and one fiber Bragg grating sensor 1121 is located in one cavity 121, and the fiber Bragg grating sensors 1121 do not interfere with each other.

[0080] After the above settings, the sleeve 120 and the protective tube 130 can protect each fiber Bragg grating sensor 1121, so that the fiber Bragg grating series sensors can adapt to various experimental conditions in the cloud chamber, especially relatively harsh experimental conditions (such as strong wind, etc.), without being damaged. Thus, the fiber Bragg grating series sensors can be applied to the cloud chamber for temperature detection, and then the characteristics of the fiber Bragg grating sensors 1121 are used to ensure the real-time, rapid and accurate temperature monitoring in the cloud chamber. At the same time, the packaged fiber Bragg grating series sensors are convenient to network in the cloud chamber, can effectively monitor the spatial distribution of the temperature in the cloud chamber, and will not affect the normal experiments in the cloud chamber.

[0081] In a specific solution, the sleeve 120 is a heat-shrinkable tube. In this way, it is convenient to first insert the fiber Bragg grating series sensors into the sleeve 120, and then shrink and fasten the sleeve 120 at the part of the sleeve 120 corresponding to each fiber Bragg grating sensor 1121 to form a closed cavity 121 for accommodating the fiber Bragg grating sensor 1121.

[0082] More specifically, the sleeve 120 can be selected as a Teflon heat-shrinkable tube. The heat-shrinkable tube made of Teflon (also known as polytetrafluoroethylene) is resistant to high and low temperatures and can adapt to different temperature conditions in the cloud chamber. At the same time, the wall of the Teflon heat-shrinkable tube is thin and the heat transfer is fast, which will not affect the temperature measurement speed of the fiber Bragg grating sensor 1121.

[0083] In a specific solution, the sensor component 110 further includes a plurality of anchor tubes 114 arranged at intervals. The anchor tubes 114 are fixedly sleeved on the optical fiber, and a fiber Bragg grating sensor 1121 is arranged between two adjacent anchor tubes 114. That is to say, the anchor tubes 114 and the fiber Bragg grating sensors 1121 are alternately arranged on the optical fiber.

[0084] After the sensor component 110 is inserted into the sleeve 120, the sleeve 120 shrinks at the positions corresponding to the anchor tubes 114 and tightly sleeves on the corresponding anchor tubes 114. In this way, the part of the sleeve 120 between two adjacent anchor tubes 114 forms a sealed cavity 121, and the fiber Bragg grating sensor 1121 located between the two anchor tubes 114 is sealed in the cavity 121.

[0085] In a specific solution, the anchoring tube 114 is preferably made of a magnetic stainless steel tube, such as a fitting made of 400 series stainless steel. The anchoring tube 114 and the optical fiber are fixed by potting, and electronic silicone can be specifically selected for potting to ensure the reliability and stability of the fixation of the anchoring tube 114 and the optical fiber, and then to ensure the tightness of the lumen 121 of the sleeve 120.

[0086] After the sensor component 110 penetrates into the sleeve 120, one end of its transmission optical fiber 111 extends out of the sleeve 120 for communication, and its pigtail 113 is located at the other end of the sleeve 120. Specifically, a sealing material 140 is potted at the end of the sleeve 120 close to the pigtail 113. In this way, the sensor component 110 arranged in the sleeve 120 can be prevented from being interfered by the external environment.

[0087] The sealing material 140 can be specifically selected as waterproof grease. Of course, in actual setting, other sealing materials can also be selected.

[0088] In actual setting, multiple fiber Bragg grating sensors 1121 are arranged at equal intervals, and each fiber Bragg grating sensor 1121 is located at the axial center of the lumen 121, that is, the distance between the fiber Bragg grating sensor 1121 and the two adjacent anchoring tubes 114 is equal. Such a setting is convenient for the manufacture of the temperature detection component 100 on the one hand, and is beneficial to monitoring the spatial distribution of the temperature in the cloud chamber on the other hand.

[0089] In a specific solution, the protective tube 130 can also be made of stainless steel tube, which can effectively protect the sensor component 110, and has fast heat transfer and does not affect the detection of the fiber Bragg grating sensor 1121.

[0090] The annular cavity formed between the protective tube 130 and the sleeve 120 is specifically sealed and fixed by filling with electronic silicone. Electronic silicone has excellent heat resistance and can meet various experimental conditions in the cloud chamber. At the same time, it has good adhesiveness, good moisture-proof, earthquake-proof and anti-aging properties, etc. It can improve the service life of the temperature detection component 100 and does not affect the detection performance of the temperature detection component 100, ensuring the protection of the internal sensor component 110 by the protective tube 130 and the sleeve 120.

[0091] Of course, in actual setting, the protective tube 130 and the sleeve 120 can also be sealed and fixed by filling other materials with the same effect.

[0092] In a specific solution, a plurality of position marks corresponding to the plurality of fiber Bragg grating sensors 1121 inside the protective tube 130 are also provided on the outer wall of the protective tube 130 to facilitate the position arrangement of the temperature detection component 100 in the cloud chamber, determine effective and accurate temperature monitoring points, and monitor the temperature spatial distribution in the cloud chamber well.

[0093] It should be noted that in the above solution, the anchoring tube 114 is magnetic, which can facilitate the marking and determination of the specific position of the fiber Bragg grating sensor 1121 by means of magnetic attraction. If the marking of the subsequent protective tube 130 is unclear, the specific position of the fiber Bragg grating sensor 1121 can also be re-determined by means of magnetic attraction. Obviously, after the anchoring tube 114 is made of magnetic stainless steel, the protective tube 130 should be made of non-magnetic stainless steel tube to ensure the position of the anchoring tube 114 is determined by magnetic attraction.

[0094] Please also refer to Figures 2 to 4 , Figures 2 to 4 which shows the schematic diagrams of each process of the manufacturing method of the temperature detection component in a specific embodiment.

[0095] The present invention also provides a manufacturing method of the above temperature detection component 100, which can also be understood as a packaging method of the fiber Bragg grating series sensor.

[0096] In this embodiment, the manufacturing method of the temperature detection component 100 includes:

[0097] Step S1, prepare a fiber Bragg grating series sensor, a sleeve 120 and a protective tube 130 with a set length.

[0098] Among them, the fiber Bragg grating series sensor is also the aforementioned sensor component 110, which includes a transmission optical fiber 111, a sensing optical fiber 112 and a pigtail 113 connected in sequence; the sensing optical fiber 112 has a plurality of fiber Bragg grating sensors 1121 arranged at intervals.

[0099] Specifically, the length of the fiber Bragg grating series sensor is related to the height dimension of the cloud chamber 200, and the specific number and spacing of the fiber Bragg grating sensors 1121 in the sensing optical fiber 112 part are related to the height dimension of the cloud chamber 200 and the monitoring requirements.

[0100] It can be understood that the sensor component 110 is inserted into the sleeve 120, and the sleeve 120 is the direct structure for encapsulating the sensor component 110. Therefore, the length of the sleeve 120 is related to the length of the sensor component 110. Specifically, after encapsulation, the length of the sleeve 120 can be slightly shorter than that of the sensor component 110, so that the transmission optical fiber 111 of the sensor component 110 extends out of the sleeve 120 to communicate with related components. When preparing the sleeve 120, its length is determined by comprehensively considering factors such as the material of the sleeve 120 and the way it forms the lumen 121.

[0101] In a specific solution, the sensor component 110 can be made of a high and low temperature resistant optical fiber with a polyimide coating or a metal coating.

[0102] As the second layer of protection for the sensor component 110, the protective tube 130 cooperates with the sleeve 120, and its length is set to be equivalent to that of the sleeve 120.

[0103] Step S2: Sheath the sleeve 120 over the sensor component 110, and at set distances outside both ends of each fiber Bragg grating sensor 1121, fasten the sleeve 120 at the corresponding positions to the optical fiber to form a closed lumen 121 for accommodating each fiber Bragg grating sensor 1121.

[0104] Step S3: Sheath a protective tube 130 over the sleeve 120 and seal and fix the two together.

[0105] In a specific solution, the protective tube 130 can be made of a stainless steel tube, which can effectively protect the sensor component 110, has fast heat transfer, and will not affect the detection of the fiber Bragg grating sensor 1121.

[0106] In a specific solution, fill the annular space formed between the protective tube 130 and the sleeve 120 with electronic silica gel to seal and fix the two together.

[0107] Further, after step S3, it further includes:

[0108] Step S4: Mark the positions on the outer tube wall of the protective tube 130 corresponding to each fiber Bragg grating sensor 1121.

[0109] During actual operation, the lengths of each section of the sensor component 110 and the spacing distances between each fiber Bragg grating sensor 1121 can be determined, and the relative positions can also be obtained when cooperating with structures such as the sleeve 120, so that the positions of each fiber Bragg grating sensor 1121 relative to the protective tube 130 can be determined and marking operations can be carried out.

[0110] It should be noted that in step S1, only the sensor component 110 and the sleeve 120 can also be prepared first, and after step S2 is completed, then the protective tube 130 is prepared and the operation of step S3 is carried out.

[0111] Specifically, the sleeve 120 is made of a heat-shrinkable tube, which is convenient for forming the lumen 121 after the sensor component 110 is inserted into it.

[0112] On this basis, step S1 further includes:

[0113] Prepare another guiding tube 150 and a plurality of anchoring tubes 114. After the sensor component 110 is prepared, respectively sleeved the plurality of anchoring tubes 114 on the optical fibers of the sensor component 110, so that there is a fiber Bragg grating sensor 1121 between adjacent two anchoring tubes 114. That is to say, sleeve an anchoring tube 114 between adjacent two fiber Bragg grating sensors 1121, and also sleeve an anchoring tube 114 at both ends of the sensing optical fiber 112 section (i.e., outside the two fiber Bragg grating sensors 1121 located at both ends).

[0114] Specifically, the anchoring tube 114 is made of magnetic stainless steel, such as 400 series stainless steel, or other magnetic pipe fittings.

[0115] The anchoring tube 114 and the optical fiber are specifically fixed by potting encapsulation, and electronic silica gel can be specifically used for potting.

[0116] On this basis, in step S2, the method for the heat shrinkable tube to form the tube cavity 121 specifically includes:

[0117] a1. Insert the sensor component 110 with the anchoring tube 114 sleeved therein into the guiding tube 150.

[0118] b1. Insert the guiding tube 150 with the sensor component 110 into the heat shrinkable tube, and make one end of the sensor component 110 relatively fixed to the corresponding end of the heat shrinkable tube to form a fixed end.

[0119] Specifically, during actual operation, make the transmission optical fiber 111 end of the sensor component 110 relatively fixed to the corresponding end of the heat shrinkable tube; at this time, the relative positions of the sensor component 110, the guiding tube 150 and the sleeve 120 are as Figure 2 shown;

[0120] c1. Pull the guiding tube 150 outwards relative to the heat shrinkable tube in the direction away from the fixed end until the first anchoring tube 114 close to the fixed end is out of the guiding tube 150. At this time, heat the area of the heat shrinkable tube corresponding to the first anchoring tube 114 so that the heat shrinkable tube at the corresponding position shrinks and tightly sleeves on the first anchoring tube 114; at this time, the relative positions and structures of each component are as Figure 3 shown; repeat this process until all the anchoring tubes 114 are fastened to the heat shrinkable tube and the guiding tube 150 is completely pulled out. In this way, the heat shrinkable tube shrinks and fastens to the anchoring tube 114 at the corresponding position of the anchoring tube 114, so as to form a sealed tube cavity 121 between two adjacent anchoring tubes 114, and the fiber Bragg grating sensor 1121 between two adjacent anchoring tubes 114 is located in the sealed tube cavity 121.

[0121] For the convenience of the extraction guiding tube 150 and for facilitating the confirmation of whether the anchoring tube 114 has come out of the guiding tube 150, during actual setting, the length of the guiding tube 150 is greater than the length of the sleeve tube 120. In step b, when the heat-shrinkable tube is sleeved on the guiding tube 150, the heat-shrinkable tube and the guiding tube 150 are also arranged to be aligned on the side where the fixed end is located. In this way, the other end of the guiding tube 150 extends out of the heat-shrinkable tube, which is convenient for the extraction action of the guiding tube 150. At the same time, since the relevant dimensions of the sensor component 110 can be determined in advance, it is possible to calculate in advance how far the guiding tube 150 needs to be pulled outwards so that the first anchoring tube 114 near the fixed end comes out of the guiding tube 150, thereby facilitating the heating operation of the heat-shrinkable tube at the corresponding position of the first anchoring tube 114. According to the spacing distance between the anchoring tube 114 and the fiber Bragg grating sensor 1121, the length of the subsequent outward extraction of the guiding tube 150 can be determined.

[0122] It should be noted that when the heat-shrinkable tube is fastened to the anchoring tube 114 by heating, the length of the heat-shrinkable tube will inevitably shorten. When preparing the heat-shrinkable tube, its length should consider the part that will shorten due to heating.

[0123] In addition, since the heat-shrinkable tube has elasticity, its elasticity can be considered for appropriate treatment during actual application. In this way, compared with the above method of forming the lumen 121, the length of the heat-shrinkable tube can be set shorter.

[0124] Specifically, another method for the heat-shrinkable tube to form the lumen 121 is as follows:

[0125] a2. Insert the sensor component 110 with the anchoring tube 114 fixedly sleeved into the guiding tube 150;

[0126] b2. Insert the guiding tube 150 with the sensor component 110 into the heat-shrinkable tube, and make one end of the sensor component 110 relatively fixed to the corresponding end of the heat-shrinkable tube to form a fixed end;

[0127] During actual operation, it can still be processed in the same way as above, making the transmission optical fiber 111 end of the sensor component 110 relatively fixed to the corresponding end of the heat-shrinkable tube; at this time, the relative positions of the components are also as Figure 2 shown;

[0128] c2. Pull the guiding tube 150 outwards relative to the heat-shrinkable tube in the direction away from the fixed end until the first anchoring tube 114 near the fixed end comes out of the guiding tube 150. At this time, heat the area of the heat-shrinkable tube corresponding to the first anchoring tube 114, so that the heat-shrinkable tube at the corresponding position shrinks and tightly sleeves on the first anchoring tube 114;

[0129] Continue to draw out the guide tube 150 outward until more than one anchoring tube 114 is disengaged from the guide tube 150. Clamp the heat-shrinkable tube at the position corresponding to the first anchoring tube 114 and the position corresponding to the inner end of the guide tube 150. Stretch the heat-shrinkable tube to both sides to make its length extend by a set value. Then heat each area of the heat-shrinkable tube corresponding to the position of each anchoring tube 114 disengaged from the guide tube 150 this time, so that the heat-shrinkable tube shrinks and tightly sleeves on the anchoring tube 114 at the corresponding position. Repeat this process until all the anchoring tubes 114 and the heat-shrinkable tube are fastened, and then completely draw out the guide tube 150.

[0130] During actual operation, the stretching amount of the heat-shrinkable tube is related to its clamped length. For the convenience of operation, after the heat-shrinkable tube is fastened to the first anchoring tube 114 near the fixed end, the length of the guide tube 150 drawn out each time can be set longer, so that after a relatively large number of anchoring tubes 114 are disengaged from the guide tube 150, the clamping and stretching operations are carried out. For example Figure 3 As shown, after the heat-shrinkable tube is fastened to the first anchoring tube 114, the guide tube 150 continues to be drawn out outward until 7 more anchoring tubes 114 are disengaged from the guide tube 150. Of course, during actual operation, 6 or 8 or other numbers of anchoring tubes 114 can be disengaged, which is specifically determined according to actual setting requirements. Specifically, the heat-shrinkable tube can be clamped by the fixture 160.

[0131] In the above two methods, when heating the area of the heat-shrinkable tube corresponding to the position of the anchoring tube 114, the areas of the heat-shrinkable tube on both sides of the anchoring tube 114 can be protected by heat insulation materials to prevent the heat-shrinkable tube in the non-heated area from being affected.

[0132] Furthermore, after all the anchoring tubes 114 and the heat-shrinkable tube are fastened by the above method and the guide tube 150 is completely drawn out, a sealing material is also poured into one end of the heat-shrinkable tube close to the pigtail 113 to ensure the sealing performance of the sensor component 110 in the heat-shrinkable tube.

[0133] Specifically, the sealing material can be selected as waterproof ointment or other sealing materials that meet the protection conditions.

[0134] As above, for the temperature detection component manufactured by this method, the optical fiber is well sealed and mechanically protected, and the possibility of the grating being stressed is eliminated to the greatest extent, so that accurate temperature measurement can be guaranteed and the service life is relatively long.

[0135] Please also refer to Figure 5 , Figure 5 which is a schematic structural diagram of a specific embodiment of the temperature monitoring system of the cloud chamber provided by the present invention.

[0136] In this embodiment, the cloud chamber temperature monitoring system includes a controller 300 and a plurality of temperature detection components 100 disposed in the inner cavity of the cloud chamber 200. The temperature detection component 100 is specifically the temperature detection component 100 described above. Each temperature detection component 100 is communicatively connected to the controller 300 and can transmit the detection result to the controller 300, so that the temperature distribution in the cloud chamber 200 can be analyzed according to the detection result.

[0137] The axial direction of the temperature detection component 100 is parallel to the height direction of the cloud chamber 200. That is to say, the axial direction of the temperature detection component 100 is the vertical direction. In this way, the multiple fiber Bragg grating sensors 1121 of the temperature detection component 100 are arranged in the vertical direction, and the temperature at different heights in the cloud chamber 200 can be detected.

[0138] It can be understood that the axial direction of the temperature detection component 100 is the length direction of the sensor component 110, that is, the length direction of the protective tube 130 or the sleeve 120.

[0139] When specifically setting, the distances of each temperature detection component 100 from the axial center of the cloud chamber 200 are set differently. In this way, monitoring points can be arranged in different spaces in the cloud chamber 200, which is beneficial to understanding the temperature distribution situation of the entire space in the cloud chamber 200.

[0140] When specifically setting, the multiple temperature detection components 100 of the cloud chamber temperature monitoring system have the same number of fiber Bragg grating sensors 1121, and along the height direction of the cloud chamber 200, the positions of the fiber Bragg grating sensors 1121 of each temperature detection component 100 are correspondingly set. That is to say, at the same height in the cloud chamber 200, there are multiple fiber Bragg grating sensors 1121 and they are distributed at different positions, which can not only understand the temperature situation at different heights in the cloud chamber 200, but also understand the temperature distribution on the same horizontal plane.

[0141] Since position marks corresponding to the fiber Bragg grating sensors 1121 are provided on the outer wall of the protective tube 130 of the temperature detection component 100, and the structures of the multiple temperature detection components 100 of the cloud chamber temperature monitoring system are the same, during installation, after setting the reference base point, referring to the position marks on each protective tube 130, it is convenient to make the fiber Bragg grating sensors 1121 of the multiple temperature detection components 100 be correspondingly set in the height direction.

[0142] Of course, it can be understood that during actual setting, according to the temperature monitoring requirements, the number of fiber Bragg grating sensors 1121 of each temperature detection component 100 of the cloud chamber temperature monitoring system can be set differently, and when arranging, they may not be correspondingly set in the height direction.

[0143] In this embodiment, a plurality of mounting through holes are formed in the top wall of the cloud chamber 200, and the plurality of mounting through holes are in one-to-one correspondence with the plurality of temperature detection components 100. The transmission optical fiber 111 end of the sensor component 110 of the temperature detection component 100 extends out of the mounting through hole at the corresponding position and is communicatively connected to the controller 300.

[0144] Forming a mounting through hole for mounting the temperature detection component 100 in the top wall of the cloud chamber 200, and it is more convenient to insert the temperature detection component 100 from the top of the cloud chamber 200 for installation.

[0145] Specifically, a nut column 211 is fixedly connected in the mounting through hole in the top wall of the cloud chamber 200. After the relative position of the temperature detection component 100 in the cloud chamber 200 is determined, the temperature detection component 100 is locked and fixed to the top wall of the cloud chamber 200 by a bolt 212 that cooperates with the nut column 211. Obviously, the bolt 212 is sleeved outside the temperature detection component 100, and the bolt 212 is in sealing cooperation with the temperature detection component 100. The bolt 212 and the nut column 211 are hermetically connected by a nut. Specifically, the bolt 212 is in sealing cooperation with the protective tube 130 of the temperature detection component 100.

[0146] In a specific solution, a load-bearing block 230 is installed at the lower end (i.e., the end where the pigtail 113 is located) of the protective tube 130 of each temperature detection component 100 to ensure that the temperature detection component 100 is in a vertical state.

[0147] In a specific solution, a mounting plate 220 is further provided in the cloud chamber 200. The mounting plate 220 is located at the bottom of the cloud chamber 200, and the lower end of the temperature detection component 100 is fixedly connected to the mounting plate 220. In this way, after ensuring the verticality of the temperature detection component 100 through the load-bearing block 230, the temperature detection component 100 is fixedly connected to the mounting plate 220, so as to ensure that the position of the temperature detection component 100 in the cloud chamber 200 will not change.

[0148] Specifically, the lower end of the protective tube 130 of the temperature detection component 100 is fixedly connected to the mounting plate 220.

[0149] Specifically, since a load-bearing block 230 is further provided at the lower end of the temperature detection component 100, the mounting plate 220 can be a grid plate with grid holes.

[0150] At the same time, the mounting plate 220 can be used as a position reference benchmark to facilitate adjusting the relative positions of the temperature detection components 100 in the cloud chamber 200, that is, adjusting the positions of the fiber Bragg grating sensors 1121 in the cloud chamber 200.

[0151] Specifically, the installation position of the mounting plate 220 within the cloud chamber 200 is determined. When each temperature detection component 100 is fixed to the mounting plate 220, the distance between the fiber Bragg grating sensor 1121 closest to the mounting plate 220, i.e., the one located at the bottom, can be determined first. Since the interval distance between the fiber Bragg grating sensors 1121 of the temperature detection component 100 is known, the height positions of the respective fiber Bragg grating sensors 1121 of the temperature detection component 100 within the cloud chamber 200 can be determined. The installation through-hole on the top wall of the cloud chamber 200 can be set according to needs, so that the distribution of the fiber Bragg grating sensors 1121 within the cloud chamber 200 can be clarified.

[0152] During the installation process, if the positions of the fiber Bragg grating sensors 1121 of each temperature detection component 100 are to be made to correspond one by one, then during installation, it is only necessary to ensure that the distance between the fiber Bragg grating sensor 1121 at the bottom of each temperature detection component 100 and the mounting plate 220 is the same, which is convenient and fast.

[0153] When the temperature detection component 100 needs to be removed, it is only necessary to unlock the locking structure between it and the mounting plate 200, and at the same time unlock the fixed bolts 212 and the nut posts 211, and pull out the temperature detection component 100 from the upper installation through-hole. At the same time, the nut posts 211 fixed in the installation through-hole can be blocked with spare bolts to ensure the airtightness of the cloud chamber 200, and other experiments can still be carried out.

[0154] As above, due to the structural design of the temperature detection component 100, during installation, it only needs to be relatively fixed to the cloud chamber 200 at its upper and lower ends. Each temperature detection component 100 is communicatively connected to the controller 300 through the transmission fiber 111 end of each to transmit detection data. The installation is convenient, and the installation structure is simple. There is no need to arrange too many installation structures within the cloud chamber 200, thus avoiding interference with the experiments carried out within the cloud chamber 200 caused by introducing too many installation structures.

[0155] After the temperature detection component 100 is applied to the cloud chamber temperature monitoring system, its state is a vertical state, which is different from the conventional fiber Bragg grating sensors. In fact, the temperature detection component 100 has encapsulated the series-connected fiber Bragg grating sensors 1121. To ensure its detection accuracy, it needs to be calibrated before application. The present invention also provides a calibration method for the temperature detection component 100.

[0156] Please refer to Figure 6 , Figure 6 which shows a schematic diagram of in-situ calibration of the temperature detection component in the cloud chamber in a specific embodiment.

[0157] In this embodiment, the calibration method of the temperature detection component 100 includes an in-situ calibration method inside the cloud chamber. Here, the in-situ calibration method refers to calibrating based on the actual state of the temperature detection component 100 applied inside the cloud chamber 200, so that the temperature measurement accuracy is high after calibration.

[0158] Specifically, the in-situ calibration method of the temperature detection component 100 inside the cloud chamber includes:

[0159] Step S01: Determine the calibration temperature range and determine multiple calibration temperature points within this calibration temperature range.

[0160] Generally, the calibration temperature range can be the same as the temperature range to be detected during the experiment of the cloud chamber 200, or set larger than the temperature range involved in the experiment of the cloud chamber 200; for example, if the temperature range of each working condition of the experiment of the cloud chamber 200 is -50°C to room temperature, then the calibration temperature range can be set to -50°C to room temperature, or appropriately expanded. That is to say, the calibration temperature range can at least cover the temperature range involved in the experiment that needs to measure temperature inside the cloud chamber 200.

[0161] After determining the calibration temperature range, select multiple calibration temperature points within this calibration temperature range. Theoretically, the more calibration temperature points, the more accurate the measurement of the temperature inside the cloud chamber 200 by the temperature detection component 100 after calibration. However, the more calibration temperature points, the longer the calibration method takes. In actual operation, the number of calibration temperature points can be selected by comprehensive consideration.

[0162] To make the calibration effect better, when determining the calibration temperature points, the intervals between the calibration temperature points can be made the same. For example, determine a calibration temperature point every 10°C within the calibration temperature range. Of course, it can be determined according to the actual situation requirements during specific calibration.

[0163] Step S02: Install the temperature detection component 100 to be calibrated in the inner cavity of the cloud chamber 200, and make the axis direction of the temperature detection component 100 parallel to the height direction of the cloud chamber 200;

[0164] Put the calibration sensor 400 into the inner cavity of the cloud chamber 200 through the reserved opening at the top of the cloud chamber 200 by the pulling rope 410.

[0165] The lower end of the temperature detection component 100 is fixed on the mounting plate 220 installed at the bottom of the inner cavity of the cloud chamber 200.

[0166] All manufactured temperature detection components 100 need to be calibrated. Here, there can be multiple temperature detection components 100 to be calibrated. At this time, the number of fiber Bragg grating sensors 1121 of multiple temperature detection components 100 to be calibrated is the same, and the arrangement intervals are the same. In this way, all temperature detection components 100 can be calibrated simultaneously. Obviously, after multiple temperature detection components 100 to be calibrated are vertically arranged in the inner cavity of the cloud chamber 200, the fiber Bragg grating sensors 1121 of multiple temperature detection components 100 correspond to each other in height.

[0167] It can be understood that if the number of fiber Bragg grating sensors 1121 of multiple temperature detection components 100 to be calibrated is different and the arrangement intervals are different, then a single temperature detection component 100 can be calibrated. Whether calibrating multiple temperature detection components 100 simultaneously or only one temperature detection component 100, their calibration methods are the same.

[0168] The calibration sensor 400 here refers to a standard detection component with accurate temperature detection. According to its detection result and the signal detected by the fiber Bragg grating sensor 1121 of the temperature detection component 100, the temperature detection component 100 is calibrated.

[0169] Step S03: Control the temperature in the inner cavity of the cloud chamber 200 to a calibration temperature point determined in step S01. Adjust the position of the calibration sensor 400 in the inner cavity of the cloud chamber 200 through the pulling rope 410 to make it correspond to the positions of the multiple fiber Bragg grating sensors 1121 of the temperature detection component 100 one by one, so as to calibrate each fiber Bragg grating sensor 1121 of the temperature detection component 100 one by one;

[0170] In the same way, calibrate each fiber Bragg grating sensor 1121 of the temperature detection component 100 at other calibration temperature points.

[0171] In this way, using this calibration method to calibrate the temperature detection component 100 can minimize the influence that the on-site application conditions may cause on the calibration, and has high calibration efficiency and higher measurement accuracy of the calibrated temperature detection component 100.

[0172] Furthermore, before in-situ calibration of the temperature detection component 100 in the cloud chamber 200, initial calibration is also carried out. This initial calibration is carried out in a conventional manner, that is, the temperature detection component 100 is placed in different temperature baths for initial calibration. Through this method, the approximate calibration range can also be determined, providing a reference for determining the calibration temperature range in step S01.

[0173] In a specific solution, when in-situ calibration is performed inside the cloud chamber 200, a guiding component 500 is fixedly installed inside the cavity of the cloud chamber 200. The length direction of the guiding component 500 is parallel to the height direction of the cloud chamber 200. That is to say, the guiding component 500 extends vertically inside the cloud chamber 200. The calibration sensor 400 is connected to the guiding component through a locking ring 430. In this way, when the calibration sensor 400 is moved by pulling the pulling rope 410, the calibration sensor 400 can move up and down along the guiding component 500 inside the cloud chamber 200 through the locking ring 430. In this way, it can be ensured that the calibration sensor 400 moves up and down vertically so as to quickly and accurately adjust its height to be at the same horizontal position as the fiber Bragg grating sensor 1121 to be calibrated.

[0174] Specifically, the guiding component 500 can be selected as a steel wire. The steel wire is straightened, and its upper and lower ends are respectively fixed to the top of the cloud chamber 200 and the mounting plate 220 inside the cloud chamber 200. Of course, the guiding component 500 can also be selected with other structures.

[0175] In a specific solution, a weight 420 is also connected to the bottom of the calibration sensor 400 so that the pulling rope 410 connected to the calibration sensor 400 is in a taut state, ensuring that the calibration sensor 400 will not change after its position is adjusted, and guaranteeing the calibration effect.

[0176] During specific operation, in the above step S03, the method of adjusting the position of the calibration sensor 400 corresponding to the fiber Bragg grating sensor 1121 of the temperature detection component 100 through the pulling rope 410 includes:

[0177] The calibration sensor 400 is connected below the pulling rope 410. A plurality of marking points are marked on the pulling rope 410. The plurality of marking points correspond one by one to the plurality of fiber Bragg grating sensors 1121 of the temperature detection component 100 already installed in the cloud chamber 200, configured such that when a certain marking point on the pulling rope 410 is located at the top reserved opening of the cloud chamber 200, the calibration sensor 400 and the fiber Bragg grating sensor corresponding to the marking point at the top reserved opening are at the same height. In this way, when the pulling rope 410 is pulled, the height position of the calibration sensor 400 inside the cloud chamber 200 can be known through the position of the marking points on the pulling rope 410, so as to accurately adjust the position of the calibration sensor 400.

[0178] Specifically, the method of marking marking points on the pulling rope 410 includes:

[0179] First, release the pulling rope 410 to make the calibration sensor 400 descend to the same height as the lowermost fiber Bragg grating sensor 1121 of the temperature detection component 100.

[0180] Obviously, before the pulling rope 410 is marked, the temperature detection component 100 has been installed in the cloud chamber 200, and the relative positions of the optical fiber grating sensors 1121 of the temperature detection component 100 in the cloud chamber 200 have been determined.

[0181] When the position of the calibration sensor 400 corresponds to that of the lowermost optical fiber grating sensor 1121, a first marking point corresponding to the lowermost optical fiber grating sensor 1121 is marked at the position where the pulling rope 410 is located at the reserved opening at the top of the cloud chamber 200 at this time; then, the calibration sensor 400 is pulled upward so that it is on the same horizontal plane as the second optical fiber grating sensor adjacent to the first optical fiber grating sensor 1121, and a second marking point is marked at the position where the pulling rope 410 is located at the top reserved opening at this time. Since the distance between two adjacent optical fiber grating sensors 1121 is determined after the temperature detection component 100 is manufactured, when marking, after the first marking point is positioned, the pulling rope 410 is pulled upward by the distance between the first optical fiber grating sensor 1121 and the second optical fiber grating sensor 1121. At this time, the calibration sensor 400 is on the same horizontal plane as the second optical fiber grating sensor 1121; in this way, the calibration sensor 400 is continuously pulled upward until all the marking points corresponding to the optical fiber grating sensors 1121 are marked on the pulling rope 410.

[0182] It should be noted that the basic length of the temperature detection component 100 is determined, and its bottom is fixedly connected to the mounting plate 220. The position of the lowermost optical fiber grating sensor 1121 of the temperature detection component 100 from the mounting plate 220 can be determined, that is, the height of the lowermost optical fiber grating sensor 1121 in the cloud chamber 200 can be determined. In this way, when the calibration sensor 400 is lowered into the cloud chamber 200 through the pulling rope 410, the point corresponding to the position of the calibration sensor 400 and the lowermost optical fiber grating sensor 1121 can be conveniently determined, so as to conveniently mark the first marking point corresponding to the lowermost optical fiber grating sensor 1121 on the pulling rope 410.

[0183] In a specific solution, the calibration sensor 400 can be a PT100 temperature sensor.

[0184] The above has introduced in detail the cloud chamber temperature monitoring system, the temperature detection component and its manufacturing and calibration methods provided by the present invention. Specific examples are used in this article to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. Temperature detection component for a cloud chamber, characterized in that, It includes a sensor component, a sleeve, and a protective tube; the sensor component is built into the sleeve, the protective tube is sleeved outside the sleeve, and the protective tube is fixedly sealed with the sleeve; The sensor component includes a plurality of fiber Bragg grating sensors connected in series by optical fibers. The sleeve has cavities along its length direction with the same number as the fiber Bragg grating sensors. Adjacent two cavities are sealed and isolated, and each cavity is provided with one fiber Bragg grating sensor; The sensor component includes a pigtail. The plurality of fiber Bragg grating sensors connected in series by optical fibers are sensing optical fibers. The pigtail is connected to the sensing optical fibers. The pigtail is located at one end of the sleeve, and the sleeve is potted with a sealing material at the end near the pigtail; The sleeve is specifically a heat shrinkable tube; The sensor component further includes a plurality of anchor tubes arranged at intervals. The anchor tubes are fixedly sleeved on the optical fiber, and one fiber Bragg grating sensor is provided between adjacent two anchor tubes; the heat shrinkable tube shrinks and tightly sleeves on the anchor tubes at the positions of each anchor tube to form the sealed cavity between adjacent two anchor tubes; The anchor tube is fixedly sealed to the optical fiber by potting with glue.

2. The temperature detection component according to claim 1, characterized in that, The anchor tube is specifically a magnetic stainless steel tube.

3. The temperature detection component according to claim 1, characterized in that, The optical fiber extends out of the anchor tube at one outer end by a preset length to form a pigtail, and the optical fiber extends out of the anchor tube at the other outer end by a set length to form a transmission optical fiber; the heat shrinkable tube is potted with a sealing material at the end near the pigtail.

4. The temperature detection component according to claim 3, characterized in that, The sealing material is specifically waterproof grease.

5. The temperature detection component according to any one of claims 1-4, characterized in that, The plurality of fiber Bragg grating sensors are arranged at equal intervals, and each fiber Bragg grating sensor is located at the axial center of the cavity.

6. The temperature detection component according to any one of claims 1-4, characterized in that, The protective tube is specifically a non-magnetic stainless steel tube.

7. The temperature detection component according to claim 6, characterized in that, The annular cavity between the protective tube and the sleeve is fixedly sealed by filling with electronic silica gel.

8. The temperature detection component according to any one of claims 1-4, characterized in that, Position marks corresponding to each fiber Bragg grating sensor are provided on the outer tube wall of the protective tube.

9. Manufacturing method of a temperature detection component for a cloud chamber, characterized in that, The manufacturing method includes: Prepare a fiber Bragg grating series sensor, a sleeve, and a protective tube with a set length. Among them, the fiber Bragg grating series sensor includes a transmission optical fiber, a sensing optical fiber, and a pigtail connected in sequence; the sensing optical fiber has a plurality of fiber Bragg grating sensors arranged at intervals; Put the sleeve outside the fiber Bragg grating series sensor, and at a set distance outside both ends of each fiber Bragg grating sensor, fasten the corresponding position of the sleeve to the optical fiber to form a sealed cavity for accommodating each fiber Bragg grating sensor; pour a sealing material at one end of the sleeve near the pigtail; After that, sleeved the protective tube outside the sleeve and fixedly seal the two; The sleeve is specifically a heat shrinkable tube; Also prepare a guide tube and a plurality of anchor tubes, fixedly sleeve the plurality of anchor tubes on the fiber Bragg grating series sensor, and make one fiber Bragg grating sensor be provided between adjacent two anchor tubes; The method for the heat shrinkable tube to form the cavity includes: Insert the fiber Bragg grating series sensor with the anchor tubes sleeved into the guide tube; Insert the guiding tube equipped with the series-connected fiber Bragg grating sensors into the heat-shrinkable tube, and relatively fix one end of the fiber Bragg grating sensor with the corresponding end of the heat-shrinkable tube to form a fixed end; Pull the guiding tube outwards relative to the heat-shrinkable tube in the direction away from the fixed end until the first anchoring tube near the fixed end disengages from the guiding tube. Heat the area of the heat-shrinkable tube corresponding to the first anchoring tube so that the heat-shrinkable tube at the corresponding position shrinks and tightly sleeves on the first anchoring tube; repeat this process until all the anchoring tubes are fastened to the heat-shrinkable tube and the guiding tube is completely pulled out; Alternatively, the method for the heat-shrinkable tube to form the lumen includes: Insert the series-connected fiber Bragg grating sensors with the anchoring tubes sleeved thereon into the guiding tube; Insert the guiding tube equipped with the series-connected fiber Bragg grating sensors into the heat-shrinkable tube, and relatively fix one end of the fiber Bragg grating sensor with the corresponding end of the heat-shrinkable tube to form a fixed end; Pull the guiding tube outwards relative to the heat-shrinkable tube in the direction away from the fixed end until the first anchoring tube near the fixed end disengages from the guiding tube. Heat the area of the heat-shrinkable tube corresponding to the first anchoring tube so that the heat-shrinkable tube at the corresponding position shrinks and tightly sleeves on the first anchoring tube; Continue to pull the guiding tube outwards until more than one of the anchoring tubes disengage from the guiding tube. Clamp the positions of the heat-shrinkable tube corresponding to the first anchoring tube and the position corresponding to the inner end of the guiding tube, and stretch the heat-shrinkable tube towards both sides to make its length extend by a set value; then heat each area of the heat-shrinkable tube corresponding to each of the anchoring tubes that disengage from the guiding tube this time, so that the heat-shrinkable tube shrinks and tightly sleeves on the anchoring tubes at the corresponding positions. Repeat this process until all the anchoring tubes are fastened to the heat-shrinkable tube and the guiding tube is completely pulled out.

10. The manufacturing method according to claim 9, characterized in that: When heating the area of the heat-shrinkable tube corresponding to the anchoring tube, protect the areas of the heat-shrinkable tube on both sides of the anchoring tube with heat insulation materials.

11. The manufacturing method according to claim 9, characterized in that: After fastening all the anchoring tubes to the heat-shrinkable tube and completely pulling out the guiding tube, sealant is also poured into one end of the heat-shrinkable tube near the pigtail.

12. The manufacturing method according to any one of claims 9-11, characterized in that: Fill the annular space formed between the protective tube and the sleeve with electronic silica gel to seal and fix the two.

13. The manufacturing method according to any one of claims 9-11, characterized in that Marks are also made on the outer tube wall of the protective tube at positions corresponding to each of the fiber Bragg grating sensors.

14. A cloud chamber temperature monitoring system, characterized in that It includes a controller and a plurality of temperature detection components arranged in the inner cavity of the cloud chamber. The temperature detection components are the temperature detection components according to any one of claims 1-8; the axial direction of the temperature detection components is parallel to the height direction of the cloud chamber; each of the temperature detection components is communicatively connected to the controller.

15. The cloud chamber temperature monitoring system according to claim 14, characterized in that Each of the temperature detection components has the same number of fiber Bragg grating sensors, and along the height direction of the cloud chamber, the fiber Bragg grating sensors of each of the temperature detection components are arranged at corresponding positions.

16. The cloud chamber temperature monitoring system according to claim 15, characterized in that A plurality of mounting through holes are formed in the top wall of the cloud chamber, and the plurality of mounting through holes are in one-to-one correspondence with the plurality of temperature detection components; the transmission optical fiber end of the sensor component of the temperature detection component extends out of the mounting through hole at the corresponding position and is communicatively connected to the controller.

17. The cloud chamber temperature monitoring system according to claim 16, characterized in that A nut column is fixedly connected in the mounting through hole, and a bolt cooperating with the nut column is further included. The upper end of the temperature detection component and the top wall of the cloud chamber are relatively fixed by the mutually cooperating nut column and bolt.

18. The cloud chamber temperature monitoring system according to claim 16, characterized in that A load-bearing block is installed at the lower end of the protective tube of each temperature detection component to ensure that the temperature detection component is in a vertical state.

19. The cloud chamber temperature monitoring system according to claim 16, characterized in that An installation plate is provided at the bottom inside the cloud chamber, and the lower end of the temperature detection component is fixed to the installation plate.

20. The cloud chamber temperature monitoring system according to any one of claims 14-19, characterized in that The distances of each temperature detection component from the axial center of the cloud chamber are set differently.

21. A calibration method for a temperature detection component used in a cloud chamber, characterized in that The temperature detection component is the temperature detection component according to any one of claims 1-8; the calibration method includes an in-situ calibration method inside the cloud chamber, and the in-situ calibration method inside the cloud chamber includes: Determine the calibration temperature range and determine a plurality of calibration temperature points within the calibration temperature range; Install the temperature detection component to be calibrated in the inner cavity of the cloud chamber so that the axial direction of the temperature detection component is parallel to the height direction of the cloud chamber; Put the calibration sensor into the inner cavity of the cloud chamber through the top reserved opening of the cloud chamber by means of a pulling rope; Control the temperature in the inner cavity of the cloud chamber to a calibration temperature point, adjust the position of the calibration sensor in the inner cavity of the cloud chamber through the pulling rope, and make it correspond to the positions of the plurality of fiber Bragg grating sensors of the temperature detection component one by one, so as to calibrate each fiber Bragg grating sensor of the temperature detection component one by one; in the same way, calibrate each fiber Bragg grating sensor of the temperature detection component at other calibration temperature points.

22. The calibration method according to claim 21, characterized in that A guiding component is fixedly installed in the inner cavity of the cloud chamber, and the length direction of the guiding component is parallel to the height direction of the cloud chamber. The calibration sensor is connected to the guiding component through a locking ring so that the calibration sensor can move up and down along the guiding component.

23. The calibration method according to claim 21, characterized in that A load-bearing object is further connected to the bottom of the calibration sensor so that the pulling rope connected to the calibration sensor is in a taut state.

24. The calibration method according to claim 21, characterized in that The method for adjusting the position correspondence between the calibration sensor and the fiber Bragg grating sensor through the pulling rope includes: The calibration sensor is connected below the pulling rope, and a plurality of marking points are marked on the pulling rope. The plurality of marking points are in one-to-one correspondence with the plurality of fiber Bragg grating sensors, and are configured such that when a certain marking point on the pulling rope is located at the top reserved opening, the calibration sensor and the fiber Bragg grating sensor corresponding to the marking point located at the top reserved opening are at the same height.

25. The calibration method according to claim 24, characterized in that The method for marking the marking points on the pulling rope includes: First, release the pulling rope to lower the calibration sensor until it is at the same height as the lowermost fiber Bragg grating sensor, and mark a first marking point corresponding to the lowermost first fiber Bragg grating sensor at the position of the pulling rope at the top reserved opening. Then, pull up the calibration sensor so that the second fiber Bragg grating sensor adjacent to the first fiber Bragg grating sensor is at the same horizontal plane, and mark a second marking point at the position of the pulling rope at the top reserved opening at this time. In this way, continuously pull up the calibration sensor until the marking of all the marking points corresponding to the fiber Bragg grating sensors is completed on the pulling rope.

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