Distributed optical fiber arrangement device for measuring temperature field in gas storage and construction method thereof

Abstract

The invention discloses a distributed optical fiber arrangement device for measuring a temperature field in a gas storage and a construction method thereof.The distributed optical fiber arrangement device comprises a gas storage tunnel, a center connector is arranged in the gas storage tunnel, splicing straight pipe assemblies are arranged on the top, the bottom and the two sides of the center connector, and a plurality of inner ring assemblies are arranged among the four splicing straight pipe assemblies; an outer ring assembly is arranged among one ends of the four splicing straight pipe assemblies, and temperature sensing optical fibers are arranged among the splicing straight pipe assemblies, the inner ring assembly and the outer ring assembly. The splicing straight pipe assembly comprises a plurality of straight pipes and a plurality of adjusting crosses, and the adjusting crosses are arranged between the opposite ends of every two adjacent straight pipes. According to the invention, splicing and assembling can be carried out according to the diameter of the gas storage tunnel in a modularized manner, so that the equipment is suitable for different gas storage tunnels, the arrangement of the whole section of the temperature sensing optical fiber can be conveniently carried out according to the straight pipe, the first bent pipe and the second bent pipe, and the calibration of the position of the temperature sensing optical fiber and the internal scale of the temperature sensing optical fiber is facilitated.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gas storage temperature field measurement, and particularly relates to a distributed optical fiber arrangement device for measuring a temperature field in a gas storage and a construction method thereof. BACKGROUND

[0002] In the first gas injection process of the artificial cavern gas storage, the cavern pressure gradually increases from atmospheric pressure to 20 MPa. In the gas compression process, the internal energy of the gas increases, and the temperature of the gas in the cavern also increases. Simulation calculations show that the long-diameter ratio of the gas storage is prone to "top smothering" effect, that is, the temperature rise at the far end of the gas storage is more obvious. The long-diameter ratio of the gas storage is prone to "stratification" effect, that is, the temperature rise at the upper part of the gas storage is more obvious. Regardless of which effect, a larger temperature rise will have a greater impact on the sealing layer.

[0003] In order to study the temperature field distribution of different forms of gas storage, a set of temperature field testing device needs to be set up. By detecting different sections, the temperature field distribution during the gas storage pressure charging process is obtained, and finally the mathematical model and related parameters are calibrated, which provides convenience for future gas storage temperature field calculation. At the same time, it can be used as a judgment standard for stopping the gas storage pressure charging process to prevent high temperature from damaging the sealing layer. Therefore, it is urgent to design a distributed optical fiber arrangement device for measuring the temperature field in the gas storage and a construction method thereof to solve the above problems. SUMMARY

[0004] The present application aims to provide a distributed optical fiber arrangement device for measuring the temperature field in the gas storage and a construction method thereof to solve the above problems in the prior art.

[0005] In order to achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] The utility model provides a kind of distributed optical fiber arrangement for measuring the distribution of temperature field in gas storage and its construction method, including gas storage tunnel, center joint is arranged in the gas storage tunnel, the top, bottom and both sides of the center joint are provided with spliced straight pipe assembly, a plurality of inner ring assemblies are arranged between four spliced straight pipe assemblies, outer ring assembly is arranged between one end of four spliced straight pipe assemblies, temperature sensing optical fiber is arranged between spliced straight pipe assembly, inner ring assembly and outer ring assembly;Spliced straight pipe assembly includes a plurality of straight pipes and a plurality of adjusting crossbars, adjusting crossbar is arranged between the opposite ends of adjacent two straight pipes, inner ring assembly includes four first elbow pipes, the two ends of first elbow pipe correspond to the adjusting crossbar in adjacent two spliced straight pipe assemblies respectively, one end of one of the straight pipes corresponds to the center joint, one end of another straight pipe is provided with adjusting T-shaped frame, outer ring assembly includes four second elbow pipes, the two ends of second elbow pipe correspond to adjacent two adjusting T-shaped frames respectively, and the left side of four adjusting T-shaped frames is elastically matched with support base plate.

[0007] Further, the top, bottom and left and right sides of the center joint are provided with first inserting rods, four first inserting rods are respectively inserted with four straight pipes, the circumferential side of four first inserting rods is provided with first external thread, the first external thread is threadedly matched with first lock nut, and the first lock nut is matched with the straight pipe.

[0008] Further, the front and rear sides of the center joint are provided with positioning screw rods, and the positioning screw rods are used to install support equipment to support the overall device.

[0009] Further, the adjusting crossbar includes a fixed rod, two first connecting blocks respectively arranged on the two sides of the fixed rod, two first rotating rods respectively rotationally matched with the two first connecting blocks, the two ends of the fixed rod are respectively inserted with two straight pipes, and one end of two first rotating rods is respectively inserted with two first elbow pipes.

[0010] Further, the two ends of the fixed rod and one end of the two first rotating rods are provided with second external threads, the second external threads are threadedly matched with second lock nuts, and the second lock nuts are matched with the straight pipes and the first elbow pipes.

[0011] Further, the adjusting T-shaped frame includes a threaded pipe, a second inserting rod arranged on the threaded pipe, two second connecting blocks respectively arranged on the two sides of the threaded pipe, and two second rotating rods respectively rotationally matched with the two second connecting blocks, one end of the second inserting rod is inserted with the straight pipe, and one end of two second rotating rods is respectively inserted with two second elbow pipes.

[0012] Further, one end of the second inserting rod and one end of the two second rotating rods are provided with third external threads, third lock nuts are threadedly connected to the third external threads, and the third lock nuts are matched with the straight pipes and the second bent pipes.

[0013] Further, a fixing pipe is arranged on the top of the support base, a support screw rod is slidably arranged in the fixing pipe, the support screw rod is threadedly connected with the threaded pipe, and springs are arranged on the circumferential side of the support screw rod.

[0014] Further, a support pad is arranged on the bottom of the support base, a groove corresponding to the support base is arranged on the top of the support pad, the bottom of the support pad is arc-shaped, and frictional resistance exists between the support pad and the inner wall of the gas storage tunnel.

[0015] A construction method of a distributed optical fiber arrangement device for measuring a temperature field in a gas storage tunnel, applied to the distributed optical fiber arrangement device for measuring a temperature field in a gas storage tunnel, comprises the following steps:

[0016] Step 1: assembling according to the center joint as a splicing point, inserting straight pipes on the top, bottom and left and right sides of the center joint, fixing the straight pipes by using first lock nuts, then inserting adjusting crosses on one end of the four straight pipes, inserting a first bent pipe between every two adjacent adjusting crosses, fixing the straight pipes and the first bent pipe by using second lock nuts, and completing splicing of a first inner ring assembly;

[0017] Step 2: then judging the number of inner ring assemblies required according to the size of the gas storage tunnel, sequentially splicing multiple inner ring assemblies outward according to the steps, satisfying the number of required inner ring assemblies, and inserting four straight pipes on the four adjusting crosses on the outermost layer for splicing an outer ring assembly;

[0018] Step 3: inserting adjusting T-shaped frames on one end of the four straight pipes, inserting a second bent pipe between every two adjacent adjusting T-shaped frames, fixing the straight pipes and the second bent pipe by using third lock nuts, then installing the support base on the adjusting T-shaped frames by using the support screw rod, so that the spring is pressed to support the support base, and the whole device is fixed in a tensioned state in the gas storage tunnel;

[0019] Step 4: then the temperature sensing optical fiber enters from the top of the outer ring assembly, passes along the second bent pipe and the straight pipe to the inner ring assembly, gradually surrounds the center along the multiple first bent pipes and the straight pipes, and finally moves downward from the center, so that the temperature sensing optical fiber is arranged in the whole cross section.

[0020] In the above technical solution, the distributed optical fiber arrangement device for measuring a temperature field in a gas storage tunnel and the construction method thereof have the following beneficial effects:

[0021] Through the set straight pipe, adjusting cross, first elbow, adjusting T-shaped frame and second elbow, the modular can be assembled according to the diameter of the gas storage tunnel, so that the equipment can be used for different gas storage tunnels, so that the temperature sensing optical fiber can be arranged in the whole section according to the straight pipe, the first elbow and the second elbow, the temperature sensing optical fiber itself position and the temperature sensing optical fiber internal scale are calibrated, through the setting of the inner ring assembly, the number of the inner ring assembly can be modified according to the size of the gas storage tunnel, so that the inner ring assembly can be added or reduced as needed, so that the temperature sensing optical fiber can be reasonably arranged in the gas storage tunnel section, through the setting of the supporting base, four supporting bases can be supported by four splicing straight pipe assemblies, so that the outer ring assembly can keep the splicing stability of the whole device, so that the whole device can be fixed in the gas storage tunnel, and the risk of device dumping is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments described in the present application, and other drawings can also be obtained by those skilled in the art according to these drawings.

[0023] Figure 1 The gas storage tunnel optical fiber arrangement device installation schematic diagram provided by the embodiment of the present application for measuring the temperature field in the gas storage.

[0024] Figure 2 The optical fiber arrangement device structure schematic diagram provided by the embodiment of the present application for measuring the temperature field in the gas storage.

[0025] Figure 3 The center joint structure schematic diagram provided by the embodiment of the present application for measuring the temperature field in the gas storage.

[0026] Figure 4 The adjusting cross structure schematic diagram provided by the embodiment of the present application for measuring the temperature field in the gas storage.

[0027] Figure 5 The adjusting T-shaped frame structure schematic diagram provided by the embodiment of the present application for measuring the temperature field in the gas storage.

[0028] Figure 6 The temperature sensing optical fiber arrangement schematic diagram provided by the embodiment of the present application for measuring the temperature field in the gas storage.

[0029] Reference Signs List:

[0030] 1, gas storage tunnel; 2, center joint; 3, spliced straight pipe assembly; 4, inner ring assembly; 5, outer ring assembly; 6, temperature sensing optical fiber; 7, straight pipe; 8, adjusting cross; 9, first elbow; 10, adjusting T-shaped frame; 11, second elbow; 12, supporting base; 13, first insertion rod; 14, first external thread; 15, first lock nut; 16, positioning screw; 17, fixing rod; 18, first connecting block; 19, first rotating rod; 20, second external thread; 21, second lock nut; 22, threaded pipe; 23, second insertion rod; 24, second connecting block; 25, second rotating rod; 26, third external thread; 27, third lock nut; 28, fixed pipe; 29, support screw; 30, spring; 31, support pad; 32, groove. DETAILED DESCRIPTION

[0031] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0032] As Figures 1-6 shown, the embodiment of the present application provides a distributed optical fiber arrangement device for measuring the temperature field in the gas storage.

[0033] The gas storage tunnel 1 is provided with the center joint 2, the top, bottom and two sides of the center joint 2 are provided with the spliced straight pipe assembly 3, a plurality of inner ring assemblies 4 are arranged between the four spliced straight pipe assemblies 3, an outer ring assembly 5 is arranged between one end of the four spliced straight pipe assemblies 3, and the temperature sensing optical fiber 6 is arranged between the spliced straight pipe assembly 3, the inner ring assembly 4 and the outer ring assembly 5; the spliced straight pipe assembly 3 comprises a plurality of straight pipes 7 and a plurality of adjusting crosses 8, the adjusting cross 8 is arranged between the opposite ends of the adjacent two straight pipes 7, the inner ring assembly 4 comprises four first elbows 9, the two ends of the first elbow 9 correspond to the adjusting crosses 8 in the adjacent two spliced straight pipe assemblies 3 respectively, one end of one of the straight pipes 7 corresponds to the center joint 2, one end of the other straight pipe 7 is provided with the adjusting T-shaped frame 10, the outer ring assembly 5 comprises four second elbows 11, the two ends of the second elbow 11 correspond to the adjacent two adjusting T-shaped frames 10 respectively, and the four adjusting T-shaped frames 10 are elastically matched with the supporting bases 12 on one side.

[0034] Referring to Figure 3The top, bottom and left and right sides of the center joint 2 are provided with first insertion rods 13, the four first insertion rods 13 are respectively inserted into the four straight pipes 7, the circumferential sides of the four first insertion rods 13 are provided with first external threads 14, the first external threads 14 are threadedly connected with first lock nuts 15, and the first lock nuts 15 are matched with the straight pipes 7. Through the first insertion rods 13, the first insertion rods 13 can be inserted into the straight pipes 7, and then the first lock nuts 15 are used for fixing, so that the straight pipes 7 are spliced and fixed.

[0035] With reference to Figure 3 The front and rear sides of the center joint 2 are provided with positioning screw rods 16, and the positioning screw rods 16 are used for installing support equipment to support the overall device. Through the positioning screw rods 16, the positioning screw rods 16 can be used to additionally install support equipment to support the front and rear sides of the center joint 2, so that the center joint 2 is more stable in use.

[0036] With reference to Figure 4 The adjusting cross 8 comprises a fixed rod 17, two first connecting blocks 18 arranged on the two sides of the fixed rod 17 respectively, two first rotating rods 19 rotationally matched with the two first connecting blocks 18 respectively, the two ends of the fixed rod 17 are inserted into the two straight pipes 7 respectively, and one end of the two first rotating rods 19 is inserted into the two first elbow pipes 9 respectively; the two ends of the fixed rod 17 and one end of the two first rotating rods 19 are provided with second external threads 20, the second external threads 20 are threadedly connected with second lock nuts 21, and the second lock nuts 21 are matched with the straight pipes 7 and the first elbow pipes 9. Through the fixed rod 17, the fixed rod 17 can be inserted into the straight pipes 7, the first rotating rods 19 are rotated for adjustment, the angle of the first rotating rods 19 is adjusted according to the size of the ring diameter of the inner ring assembly 4, the first rotating rods 19 are inserted into the first elbow pipes 9, and the straight pipes 7 and the first elbow pipes 9 are fixed through the second lock nuts 21.

[0037] With reference to Figure 5 The adjusting T-shaped frame 10 comprises a threaded pipe 22, a second insertion rod 23 arranged on the threaded pipe 22, two second connecting blocks 24 arranged on the two sides of the threaded pipe 22 respectively, two second rotating rods 25 rotationally matched with the two second connecting blocks 24 respectively, one end of the second insertion rod 23 is inserted into the straight pipe 7, and one end of the two second rotating rods 25 is inserted into the two second elbow pipes 11 respectively; one end of the second insertion rod 23 and one end of the two second rotating rods 25 are provided with third external threads 26, the third external threads 26 are threadedly connected with third lock nuts 27, and the third lock nuts 27 are matched with the straight pipe 7 and the second elbow pipes 11. Through the second insertion rod 23, the second insertion rod 23 can be inserted into the straight pipe 7, the second rotating rods 25 are rotated for adjustment, the ring diameter of the second elbow pipes 11 is adapted, the second rotating rods 25 are inserted into the second elbow pipes 11 for splicing, and then the straight pipe 7 and the second elbow pipes 11 are fixed through the third lock nuts 27.

[0038] Referring to Figure 5 The top of the support base plate 12 is provided with a fixing pipe 28, a support screw 29 is slidingly fitted in the fixing pipe 28, the support screw 29 is threadedly fitted with the threaded pipe 22, and the circumferential side of the support screw 29 is provided with a spring 30. By arranging the support screw 29, the support base plate 12 can be rotated to drive the support screw 29 to rotate, so that the support screw 29 is threadedly fitted with the threaded pipe 22, the support base plate 12 is installed, the threaded pipe 22 is pressed to support the support base plate 12, and the four support base plates 12 support the entire device in the gas storage tunnel 1.

[0039] Referring to Figure 5 The bottom of the support base plate 12 is provided with a support pad 31, the top of the support pad 31 is provided with a groove 32 corresponding to the support base plate 12, the bottom of the support pad 31 is arc-shaped, and frictional resistance exists between the support pad 31 and the inner wall of the gas storage tunnel 1. By arranging the support pad 31, the support pad 31 can be added to the bottom of the support base plate 12, the arc surface of the support pad 31 is fitted to the inside of the gas storage tunnel 1, the frictional resistance is increased, and the entire device is more stable.

[0040] The application provides a construction method of a distributed optical fiber arrangement device for measuring a temperature field in a gas storage, which is applied to the distributed optical fiber arrangement device for measuring the temperature field in the gas storage and comprises the following steps:

[0041] Step 1: According to the center joint 2 as a splicing point, the straight pipes 7 are inserted at the top, bottom and left and right sides of the center joint 2, the straight pipes 7 are fixed by using the first lock nut 15, then the adjusting crosses 8 are inserted at one end of the four straight pipes 7, one first elbow pipe 9 is inserted between every two adjacent adjusting crosses 8, the straight pipes 7 and the first elbow pipe 9 are fixed by using the second lock nut 21, and the splicing of the first inner ring assembly 4 is completed;

[0042] Step 2: Then, according to the size of the gas storage tunnel 1, the number of inner ring assemblies 4 required is determined, and the plurality of inner ring assemblies 4 are spliced outward in sequence according to step 1, so as to meet the number of inner ring assemblies 4 required, and the four straight pipes 7 are inserted on the four adjusting crosses 8 at the outermost layer, for splicing the outer ring assembly 5;

[0043] Step 3: The adjusting T-shaped frames 10 are inserted at one end of the four straight pipes 7, one second elbow pipe 11 is inserted between every two adjacent adjusting T-shaped frames 10, the straight pipes 7 and the second elbow pipe 11 are fixed by using the third lock nut 27, then the support base plate 12 is installed on the adjusting T-shaped frame 10 by using the support screw 29, the spring 30 is pressed to support the support base plate 12, and the entire device is fixed in a tight state in the gas storage tunnel 1.

[0044] Step 4: Then the temperature sensing optical fiber 6 enters from the top of the outer ring assembly 5, along the second elbow pipe 11 and the straight pipe 7 to the inner ring assembly 4, gradually surrounds along the plurality of first elbow pipes 9 and the straight pipe 7 into the center, and finally moves out from the center downward, so that the temperature sensing optical fiber 6 is arranged throughout the cross section.

[0045] The embodiment of the present application additionally provides an optical fiber arrangement mode, wherein one side of the straight pipe 7, the first elbow pipe 9 and the second elbow pipe 11 is provided with a wire slot, the temperature sensing optical fiber 6 can be arranged and fixed through the wire slot, or the temperature sensing optical fiber 6 is fixed by using an external buckle, and the temperature sensing optical fiber 6 can be fixed at the corresponding connection node.

[0046] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that the described embodiments can be modified in various ways without departing from the spirit and scope of the present application for those skilled in the art. Therefore, the above drawings and descriptions are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A distributed optical fiber arrangement for measuring the temperature field in a gas storage, comprising a gas storage tunnel (1), characterized in that, The gas storage tunnel (1) is provided with a center joint (2), the top, bottom and both sides of the center joint (2) are provided with spliced straight pipe assemblies (3), a plurality of inner ring assemblies (4) are arranged between the four spliced straight pipe assemblies (3), an outer ring assembly (5) is arranged between one end of the four spliced straight pipe assemblies (3), temperature sensing optical fibers (6) are arranged between the spliced straight pipe assemblies (3), the inner ring assemblies (4) and the outer ring assembly (5). The spliced straight pipe assembly (3) comprises a plurality of straight pipes (7) and a plurality of adjusting crossbars (8), the adjusting crossbar (8) is arranged between the opposite ends of two adjacent straight pipes (7), the inner ring assembly (4) comprises four first elbow pipes (9), the two ends of the first elbow pipe (9) correspond to the adjusting crossbar (8) in the adjacent two spliced straight pipe assemblies (3) respectively, one end of one of the straight pipes (7) corresponds to the center joint (2), and the other end of the other straight pipe (7) is provided with an adjusting T-shaped frame (10); the outer ring assembly (5) comprises four second elbow pipes (11), the two ends of the second elbow pipe (11) correspond to the adjacent two adjusting T-shaped frames (10) respectively, and one side of each of the four adjusting T-shaped frames (10) is elastically matched with a support base (12).

2. A distributed optical fiber arrangement for measuring temperature field in a gas storage according to claim 1, characterized in that, The top, bottom and left and right sides of the center joint (2) are provided with first insertion rods (13), the four first insertion rods (13) are respectively inserted and matched with the four straight pipes (7), the circumferential sides of the four first insertion rods (13) are provided with first external threads (14), the first external threads (14) are threadedly matched with first lock nuts (15), and the first lock nuts (15) are matched with the straight pipes (7).

3. A distributed optical fiber arrangement for measuring temperature field in a gas storage according to claim 1, characterized in that, The front and rear sides of the center joint (2) are provided with positioning screws (16), and the positioning screws (16) are used for installing supporting equipment to support the overall device.

4. The distributed optical fiber arrangement for measuring temperature field distribution in a gas storage according to claim 1, characterized in that, The adjusting crossbar (8) comprises a fixed rod (17), two first connecting blocks (18) arranged on the two sides of the fixed rod (17), and two first rotating rods (19) rotationally matched with the two first connecting blocks (18), respectively, the two ends of the fixed rod (17) are inserted and matched with the two straight pipes (7), and one end of each of the two first rotating rods (19) is inserted and matched with the two first elbow pipes (9).

5. A distributed optical fiber arrangement for measuring temperature field in a gas storage according to claim 4, characterized in that, The two ends of the fixed rod (17) and one end of each of the two first rotating rods (19) are provided with second external threads (20), the second external threads (20) are threadedly matched with second lock nuts (21), and the second lock nuts (21) are matched with the straight pipes (7) and the first elbow pipes (9).

6. The distributed optical fiber arrangement for measuring temperature field distribution in a gas storage according to claim 1, characterized in that, The adjusting T-shaped frame (10) comprises a threaded pipe (22), a second inserting rod (23) arranged on the threaded pipe (22), two second connecting blocks (24) arranged on the two sides of the threaded pipe (22) respectively, and two second rotating rods (25) in rotating fit with the two second connecting blocks (24) respectively, one end of the second inserting rod (23) is in plug fit with the straight pipe (7), and one end of the two second rotating rods (25) is in plug fit with the two second elbow pipes (11) respectively.

7. A distributed optical fiber arrangement for measuring temperature field in a gas storage according to claim 6, characterized in that, One end of the second inserting rod (23) and one end of the two second rotating rods (25) are provided with third external threads (26), the third external threads (26) are in threaded fit with third lock nuts (27), and the third lock nuts (27) are matched with the straight pipe (7) and the second elbow pipe (11).

8. A distributed optical fiber arrangement for measuring temperature field in a gas storage according to claim 7, characterized in that, The top of the supporting base plate (12) is provided with a fixing pipe (28), a support screw rod (29) is in sliding fit in the fixing pipe (28), the support screw rod (29) is in threaded fit with the threaded pipe (22), and the periphery of the support screw rod (29) is provided with a spring (30).

9. The distributed optical fiber arrangement for measuring temperature field distribution in a gas storage according to claim 1, characterized in that, The bottom of the supporting base plate (12) is provided with a support cushion block (31), the top of the support cushion block (31) is provided with a groove (32) corresponding to the supporting base plate (12), the bottom of the support cushion block (31) is arc-shaped, and there is frictional resistance between the support cushion block (31) and the inner wall periphery of the gas storage tunnel (1).

10. A construction method of a distributed optical fiber arrangement for measuring temperature field in a gas storage, applied to the distributed optical fiber arrangement for measuring temperature field in a gas storage according to any one of claims 1-9, characterized in that, The method comprises the following steps: Step 1: assembling according to the center joint (2) as a splicing point, inserting the straight pipe (7) on the top, bottom and left and right sides of the center joint (2) respectively, fixing the straight pipe (7) by using the first lock nut (15), then inserting the adjusting cross frame (8) on one end of the four straight pipes (7) respectively, inserting a first elbow pipe (9) between every two adjacent adjusting cross frames (8), fixing the straight pipe (7) and the first elbow pipe (9) by using the second lock nut (21), and completing the splicing of the first inner ring assembly (4); Step 2: then judging the number of inner ring assemblies (4) required according to the size of the gas storage tunnel (1), sequentially splicing multiple inner ring assemblies (4) outward according to step 1, satisfying the number of inner ring assemblies (4) required, and inserting four straight pipes (7) on the four adjusting cross frames (8) on the outermost layer for splicing the outer ring assembly (5); Step 3: inserting the adjusting T-shaped frame (10) on one end of the four straight pipes (7), inserting a second elbow pipe (11) between every two adjacent adjusting T-shaped frames (10), fixing the straight pipe (7) and the second elbow pipe (11) by using the third lock nut (27), then installing the supporting base plate (12) on the adjusting T-shaped frame (10) by using the support screw rod (29), so that the spring (30) extrudes the supporting base plate (12) to support, and the whole device is in a tensioned state and is fixed in the gas storage tunnel (1). Step 4: Then the temperature sensing optical fiber (6) enters from the top of the outer ring assembly (5), along the second elbow pipe (11) and the straight pipe (7) to the inner ring assembly (4), gradually surrounds along the multiple first elbow pipes (9) and the straight pipe (7) and enters the center, and finally moves out from the center downward, so that the temperature sensing optical fiber (6) is arranged throughout the cross section.

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