Thermal well pipeline temperature on-line monitoring device

Abstract

The utility model relates to the technical field of thermal well pipeline temperature measurement, in particular to a thermal well pipeline temperature on-line monitoring device, which comprises a bottom plate, a fixing mechanism and a connecting mechanism, one end of the bottom plate is fixedly connected with a detection box, the bottom end of the detection box is provided with a battery, the top end of the detection box is provided with a distributed optical fiber temperature measurement regulator, and the bottom end of the detection box is provided with an optical fiber. One side of the distributed optical fiber temperature measurement regulator is provided with a tester, the middle part of one side of the bottom plate is fixedly connected with a side support plate, the top end of the bottom plate is provided with a wire coil, the top end of the side support plate is connected with a rotating rod through a bearing, the surface of the wire coil is wound with an optical cable assembly, and one end of the optical cable assembly is provided with a first protective sleeve. The supporting rods and the rollers can ensure that the optical cable assembly does not rub with the inner wall of the thermal well when falling, thereby reducing the abrasion of the optical cable assembly, prolonging the service life of the optical cable assembly, improving the survival rate of the optical cable assembly, and facilitating the segmented test of the optical cable assembly in the well descending process.

Description

Technical Field

[0001] The utility model relates to the technical field of thermal well pipeline temperature measurement, in particular to an online monitoring device for thermal well pipeline temperature. Background Art

[0002] As a renewable energy, geothermal energy has attracted much attention because it can be used to generate electricity and produce stable and reliable clean energy. For sustainable development and effective control of clean resources, it is necessary to implement full-area control of geothermal wells, monitor the temperature of hot well water extraction and reinjection in real time, and study the temperature effect caused by thermal shock on the surface of steel pipes during production. Distributed fiber optic sensing technology can monitor the physical parameters of any point along the optical fiber distribution on the underground space structure. It has the characteristics of rich measurement information and accurate positioning. The detection optical cable is laid in parallel along the pipeline to realize real-time monitoring of the temperature condition along the pipeline. It has the advantages of long measurement distance, continuous distributed measurement, no power supply, accurate positioning, simple installation, safety and reliability, strong scalability, etc. It will not cause any damage to the pipeline or affect its normal production. It is especially suitable for online monitoring applications of underground long-distance pipelines.

[0003] The existing thermal well pipeline temperature detection device is not convenient for users to lay out the optical cable during use. At the same time, it is very easy to produce friction with the inner wall of the thermal well during laying out, which makes it very easy to damage. In addition, the harsh environment of the thermal well further shortens its life and reduces its survival rate. Utility Model Content

[0004] The utility model aims to solve the shortcomings of the above-mentioned background technology and proposes an online monitoring device for the temperature of a thermal well pipeline.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an online temperature monitoring device for a thermal well pipeline, comprising a base plate, a fixing mechanism and a connecting mechanism, one end of the base plate is fixedly connected to a detection box, the bottom end of the detection box is provided with a battery, the top of the detection box is provided with a distributed optical fiber temperature measuring and regulating instrument, one side of the distributed optical fiber temperature measuring and regulating instrument is provided with a tester, one end of the base plate is fixedly connected to a support rod, one end of the support rod is connected to a roller through a bearing, a side support plate is fixedly connected to the middle part of one side of the base plate, a wire drum is provided at the top of the base plate, a rotating rod is connected to the top of the side support plate through a bearing, and the rotating rod passes through the wire drum, an optical cable assembly is wound around the surface of the wire drum, and the surface of the optical cable assembly is in contact with the surface of the roller, one side of the base plate is connected to a movable support plate through a rotating shaft, and the top of the movable support plate is in contact with the rotating rod, and a first protective cover is provided at one end of the optical cable assembly.

[0006] Preferably, the control ends of the distributed optical fiber temperature measuring and regulating instrument and the tester are both electrically connected to the battery, so as to facilitate the operation of the device.

[0007] Preferably, the fixing mechanism includes a slot, a movable slot, a slide groove, a pull plate, an insertion rod and a first connecting rod, a slot is symmetrically provided in the middle of the bottom plate, a movable slot is provided in the middle and lower part of the movable support plate, a slide groove is provided on the inner wall of the top of the movable slot, the inside of the slide groove is slidably connected with a pull plate, and one side of the pull plate is located outside the movable support plate, the bottom end of the movable slot is symmetrically slidably connected with an insertion rod, and one end of the insertion rod is respectively located inside the slot, one end of the insertion rod is connected to the first connecting rod through a rotating shaft, and one end of the first connecting rod is connected to the pull plate through a rotating shaft, so that users can replace the cable reel and the optical cable assembly conveniently.

[0008] Preferably, the size of the slide groove is matched with the size of the pull plate, and the size of the insertion rod is respectively matched with the size of the slot, and the matched sizes facilitate the movement of the slot and the pull plate.

[0009] Preferably, the connecting mechanism includes a first swivel, a fixed ring, a ring groove, a signal receiving plate, a second swivel, a receiving groove, a signal connecting rod and a spring, one side of the side branch plate is fixedly connected to the fixed ring, one side of the fixed ring is provided with a first swivel, and one side of the first swivel is in contact with the wire drum, one side of the fixed ring is provided with a ring groove, the inner part of the ring groove is rotatably connected to the second swivel, and one end of the second swivel is fixedly connected to the first swivel, the inner wall of the ring groove is provided with two groups of signal receiving plates, one end of the second swivel is provided with two groups of receiving grooves, and one end of the receiving grooves extends to the inside of the first swivel, the inside of the receiving grooves is slidably connected with a signal connecting rod, and one end of the signal connecting rod is respectively in contact with the signal receiving plate, one end of the signal connecting rod is fixedly connected to a spring, and one end of the spring is fixedly connected to the inner wall of the receiving groove, so as to facilitate the user to ensure the transmission of the signal while releasing the line, and facilitate the user's real-time monitoring.

[0010] Preferably, the signal receiving plate is a circular ring with different diameters, the two groups of signal connecting rods are staggered, and the distances from the central axes of the two groups of signal connecting rods to the midline axis of the second rotating ring are different, which facilitates the transmission of the two groups of signals.

[0011] Preferably, the optical cable assembly includes a PE protective sheath, stainless steel wires, a stainless steel seamless steel pipe, a filling grease and an optical fiber core, the interior of the PE protective sheath is evenly provided with stainless steel wires, the inner wall of the PE protective sheath is provided with a stainless steel seamless steel pipe, the interior of the stainless steel seamless steel pipe is provided with a filling grease, the interior of the filling grease is provided with two groups of optical fiber cores, and the optical fiber cores are respectively connected to the signal connecting rod through the first swivel ring, thereby improving the applicability and service life of the optical cable assembly.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The provision of slots, movable slots, slides, pull plates and plug rods can facilitate users to replace the cable reels and optical cable assemblies. The support rods and rollers can ensure that the optical cable assembly does not rub against the inner wall of the thermal well when falling, thereby reducing the wear of the optical cable assembly, increasing its service life and improving its survival rate. The provision of a first swivel, a fixed ring, a ring groove, a signal receiving plate, a second swivel, a receiving groove, a signal connecting rod and a spring can ensure that the optical cable assembly can transmit signals while falling, which facilitates segmented testing of the optical cable assembly during the process of going down to the well, ensuring the survival rate of the optical cable assembly. The special structure of the optical cable assembly can ensure that it is suitable for various harsh environments and has high applicability. At the same time, it has long measurement distance, continuous distributed measurement, no power supply, precise positioning, simple installation, safety and reliability, and strong expansibility. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the utility model;

[0015] Figure 2 It is a cross-sectional stereoscopic schematic diagram of the utility model;

[0016] Figure 3 It is a cross-sectional stereoscopic schematic diagram of the movable support plate and the slot in the utility model;

[0017] Figure 4 It is a cross-sectional perspective schematic diagram of the annular groove and the receiving groove in the utility model;

[0018] Figure 5 It is a structural schematic diagram of the optical cable assembly in the utility model.

[0019] In the figure: 1. bottom plate; 2. detection box; 3. battery; 4. distributed optical fiber temperature measuring and regulating instrument; 5. tester; 6. support rod; 7. roller; 8. side support plate; 9. rotating rod; 10. cable drum; 11. optical cable assembly; 12. movable support plate; 13. first protective cover; 14. slot; 15. movable slot; 16. slide slot; 17. pull plate; 18. plug rod; 19. first connecting rod; 20. first swivel; 21. fixed ring; 22. ring groove; 23. signal receiving plate; 24. second swivel; 25. receiving groove; 26. signal connecting rod; 27. spring; 28. PE protective cover; 29. ​​stainless steel wire; 30. stainless steel seamless steel pipe; 31. filling grease; 32. optical fiber core. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] See also Figure 1-Figure 5 , an embodiment provided by the utility model:

[0022] A thermal well pipeline temperature online monitoring device comprises a bottom plate 1, a fixing mechanism and a connecting mechanism, one end of the bottom plate 1 is fixedly connected with a detection box 2, the bottom end of the detection box 2 is provided with a battery 3, the top of the detection box 2 is provided with a distributed optical fiber temperature measuring and adjusting instrument 4, and one side of the distributed optical fiber temperature measuring and adjusting instrument 4 is provided with a tester 5, one end of the bottom plate 1 is fixedly connected with a support rod 6, one end of the support rod 6 is connected with a roller 7 through a bearing, a side support plate 8 is fixedly connected to the middle of one side of the bottom plate 1, a cable drum 10 is provided at the top of the bottom plate 1, a rotating rod 9 is connected to the top of the side support plate 8 through a bearing, and the rotating rod 9 passes through the cable drum 10, an optical cable assembly 11 is wound around the surface of the cable drum 10, and the surface of the optical cable assembly 11 is in contact with the surface of the roller 7, a movable support plate 12 is connected to one side of the bottom plate 1 through a rotating shaft, and the top of the movable support plate 12 is in contact with the rotating rod 9, and a first protective cover 13 is provided at one end of the optical cable assembly 11;

[0023] Furthermore, the fixing mechanism includes a slot 14, a movable slot 15, a slide 16, a pull plate 17, an insertion rod 18 and a first connecting rod 19. The middle part of the bottom plate 1 is symmetrically provided with a slot 14, the middle and lower part of the movable support plate 12 is provided with a movable slot 15, the inner wall of the top of the movable slot 15 is provided with a slide 16, the inside of the slide 16 is slidably connected with a pull plate 17, and one side of the pull plate 17 is located outside the movable support plate 12, the bottom end of the movable slot 15 is symmetrically slidably connected with an insertion rod 18, and one end of the insertion rod 18 is respectively located inside the slot 14, one end of the insertion rod 18 is connected to the first connecting rod 19 through a rotating shaft, and one end of the first connecting rod 19 is connected to the pull plate 17 through a rotating shaft. When the user needs to replace the cable drum 10 and the optical cable assembly 11, the user pulls the pull plate 17 upwards, the pull plate 17 drives the first connecting rod 19 to move, and the first connecting rod 19 drives The plug rod 18 moves, and when the plug rod 18 is in the slot 14 again, the user can put down the movable support plate 12, and then the user can remove the cable drum 10 and the optical cable assembly 11 for replacement, and then the user resets the movable support plate 12 to make the movable support plate 12 vertical. At this time, the user pushes the pull plate 17 downward, and the plug rod 18 can be inserted into the slot 14 again through the first connecting rod 19, so as to fix the movable support plate 12. At this time, the replacement is completed. The slot 14, the movable groove 15, the slide groove 16, the pull plate 17 and the plug rod 18 can facilitate the user to replace the cable drum 10 and the optical cable assembly 11. The support rod 6 and the roller 7 can ensure that the optical cable assembly 11 does not rub against the inner wall of the thermal well when it falls, thereby reducing the wear of the optical cable assembly 11, increasing its service life, and increasing its survival rate, which is convenient for users to replace the cable drum 10 and the optical cable assembly 11;

[0024] Furthermore, the connecting mechanism includes a first rotating ring 20, a fixed ring 21, an annular groove 22, a signal receiving plate 23, a second rotating ring 24, a receiving groove 25, a signal connecting rod 26 and a spring 27. One side of the side support plate 8 is fixedly connected with the fixed ring 21, one side of the fixed ring 21 is provided with the first rotating ring 20, and one side of the first rotating ring 20 is in contact with the wire drum 10, one side of the fixed ring 21 is provided with an annular groove 22, the inner part of the annular groove 22 is rotatably connected with the second rotating ring 24, and one end of the second rotating ring 24 is fixedly connected with the first rotating ring 20, and the inner wall of the annular groove 22 is provided with two groups of signal The signal receiving plate 23 and the second rotating ring 24 are provided with two sets of receiving grooves 25 at one end, and one end of the receiving grooves 25 extends to the inside of the first rotating ring 20, and the inside of the receiving grooves 25 is slidably connected with a signal connecting rod 26, and one end of the signal connecting rod 26 is respectively fitted with the signal receiving plate 23, and one end of the signal connecting rod 26 is fixedly connected with a spring 27, and one end of the spring 27 is fixedly connected to the inner wall of the receiving groove 25, and the first protective cover 13 and the optical cable assembly 11 are driven to move by lowering the pipeline, and the optical cable assembly 11 drives the cable drum 10 to rotate, and the cable drum 10 drives the rotating rod 9 and the first rotating ring 20 rotate, the first rotating ring 20 drives the second rotating ring 24 and the signal connecting rod 26 to rotate, and the spring 27 can always ensure that one end of the signal connecting rod 26 is closely fitted with the signal receiving board 23, and the optical fiber core 32 inside the optical cable assembly 11 transmits the signal to the distributed optical fiber temperature measuring and regulating instrument 4 and the tester 5 through the signal connecting rod 26 and the signal receiving board 23. The user can use the distributed optical fiber temperature measuring and regulating instrument 4 and the tester 5 to perform real-time segmented monitoring of the pipeline well. 23, the second rotating ring 24, the receiving groove 25, the signal connecting rod 26 and the spring 27 can ensure that the optical cable assembly 11 can also transmit signals while falling, which is convenient for the optical cable assembly 11 to be tested in sections during the process of going down the well, and ensure the survival rate of the optical cable assembly 11. The special structure of the optical cable assembly 11 can ensure that it is suitable for various harsh environments, with high applicability, and at the same time, the measurement distance is long, continuous distributed measurement, no power supply, precise positioning, simple installation, safe and reliable, strong expansibility, convenient for users to ensure signal transmission while laying out the line, and convenient for users to monitor in real time;

[0025] Furthermore, the optical cable assembly 11 includes a PE protective sleeve 28, a stainless steel wire 29, a stainless steel seamless steel tube 30, a filling grease 31 and an optical fiber core 32. The stainless steel wire 29 is evenly arranged inside the PE protective sleeve 28, the inner wall of the PE protective sleeve 28 is provided with a stainless steel seamless steel tube 30, the stainless steel seamless steel tube 30 is provided with a filling grease 31, and two groups of optical fiber cores 32 are arranged inside the filling grease 31, and the optical fiber cores 32 are respectively connected to the signal connecting rod 26 through the first rotating ring 20, thereby improving the applicability of the optical cable assembly 11. The control ends of the distributed optical fiber temperature measuring and regulating instrument 4 and the tester 5 are electrically connected to the battery 3, which is convenient for the operation of the device. The size of the slide groove 16 is matched with the size of the pull plate 17, and the sizes of the plug rod 18 are respectively matched with the sizes of the slot 14. The matched sizes facilitate the movement of the slot 14 and the pull plate 17. The signal receiving plate 23 is a ring with different diameters, and the two groups of signal connecting rods 26 are staggered. The center axes of the two groups of signal connecting rods 26 are at different distances from the center axis of the second rotating ring 24, which is convenient for the transmission of the two groups of signals.

[0026] Working principle: When the user uses the device, the user moves the device to the desired position and fixes it. The user places the optical cable assembly 11 on the top of the roller 7, fixes the first protective cover 13 to the pipeline, and drives the first protective cover 13 and the optical cable assembly 11 to move by lowering the pipeline. The optical cable assembly 11 drives the wire drum 10 to rotate, the wire drum 10 drives the rotating rod 9 and the first rotating ring 20 to rotate, and the first rotating ring 20 drives the second rotating ring 24 and the signal connecting rod 26 to rotate. The spring 27 can always ensure that one end of the signal connecting rod 26 is tightly fitted with the signal receiving plate 23, and the light inside the optical cable assembly 11 is The fiber core 32 transmits the signal to the distributed optical fiber temperature measuring and adjusting instrument 4 and the tester 5 through the signal connecting rod 26 and the signal receiving board 23. The user can perform real-time segmented monitoring of the pipeline well through the distributed optical fiber temperature measuring and adjusting instrument 4 and the tester 5. The first rotating ring 20, the fixed ring 21, the annular groove 22, the signal receiving board 23, the second rotating ring 24, the receiving groove 25, the signal connecting rod 26 and the spring 27 can ensure that the optical cable assembly 11 can transmit signals while falling, which is convenient for the segmented testing of the optical cable assembly 11 during the process of going down to the well, and the survival rate of the optical cable assembly 11 is ensured. The special structure of the optical cable assembly 11 can ensure that it is suitable for various harsh environments, with high applicability, long measurement distance, continuous distributed measurement, no need for power supply, precise positioning, simple installation, safe and reliable, and strong expansibility. When the user needs to replace the cable drum 10 and the optical cable assembly 11, the user pulls the pull plate 17 upwards, the pull plate 17 drives the first connecting rod 19 to move, and the first connecting rod 19 drives the plug rod 18 to move. When the plug rod 18 is inside the slot 14 again, the user can put down the movable support plate 12, and the user can remove the cable drum 10 and the optical cable assembly 11 and replace them, and then the user can Reset the movable support plate 12 so that the movable support plate 12 is vertical. At this time, the user pushes the pull plate 17 downward. At this time, the first connecting rod 19 can be used to insert the plug 18 into the inside of the slot 14, so as to fix the movable support plate 12. At this time, the replacement is completed. The slot 14, the movable groove 15, the slide groove 16, the pull plate 17 and the plug 18 can facilitate the user to replace the cable drum 10 and the optical cable assembly 11. The support rod 6 and the roller 7 can ensure that the optical cable assembly 11 does not rub against the inner wall of the thermal well when falling, thereby reducing the wear of the optical cable assembly 11, increasing its service life, and improving its survival rate.

[0027] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A thermal well pipeline temperature online monitoring device, characterized in that: The device comprises a bottom plate (1), a fixing mechanism and a connecting mechanism, wherein one end of the bottom plate (1) is fixedly connected to a detection box (2), a battery (3) is arranged at the bottom end of the detection box (2), a distributed optical fiber temperature measuring and regulating instrument (4) is arranged at the top end of the detection box (2), a tester (5) is arranged at one side of the distributed optical fiber temperature measuring and regulating instrument (4), one end of the bottom plate (1) is fixedly connected to a support rod (6), one end of the support rod (6) is connected to a roller (7) via a bearing, and a side support plate (8) is fixedly connected to the middle part of one side of the bottom plate (1). ), a cable drum (10) is arranged at the top of the bottom plate (1), a rotating rod (9) is connected to the top of the side support plate (8) via a bearing, and the rotating rod (9) passes through the cable drum (10), an optical cable assembly (11) is wound around the surface of the cable drum (10), and the surface of the optical cable assembly (11) is in contact with the surface of the roller (7), a movable support plate (12) is connected to one side of the bottom plate (1) via a rotating shaft, and the top of the movable support plate (12) is in contact with the rotating rod (9), and a first protective cover (13) is arranged at one end of the optical cable assembly (11).

2. The device for online monitoring temperature of a thermal well pipeline according to claim 1, characterized in that: The control ends of the distributed optical fiber temperature measuring and regulating instrument (4) and the tester (5) are both electrically connected to the battery (3).

3. The online monitoring device for thermal well pipeline temperature according to claim 1 is characterized in that: The fixing mechanism comprises a slot (14), a movable slot (15), a slide groove (16), a pull plate (17), an insertion rod (18) and a first connecting rod (19); the slot (14) is symmetrically provided in the middle of the bottom plate (1); the movable slot (15) is provided in the middle and lower part of the movable support plate (12); the slide groove (16) is provided on the inner wall of the top of the movable slot (15); the pull plate (17) is slidably connected inside the slide groove (16); one side of the pull plate (17) is located outside the movable support plate (12); the insertion rod (18) is symmetrically slidably connected at the bottom end of the movable slot (15); one end of the insertion rod (18) is respectively located inside the slot (14); one end of the insertion rod (18) is connected to the first connecting rod (19) via a rotating shaft; and one end of the first connecting rod (19) is connected to the pull plate (17) via a rotating shaft.

4. The device for online monitoring temperature of a thermal well pipeline according to claim 3 is characterized in that: The size of the slide groove (16) matches the size of the pull plate (17), and the size of the insertion rod (18) matches the size of the slot (14).

5. The device for online monitoring temperature of a thermal well pipeline according to claim 1, characterized in that: The connecting mechanism comprises a first rotating ring (20), a fixing ring (21), an annular groove (22), a signal receiving plate (23), a second rotating ring (24), a receiving groove (25), a signal connecting rod (26) and a spring (27); one side of the side support plate (8) is fixedly connected to the fixing ring (21); one side of the fixing ring (21) is provided with the first rotating ring (20), and one side of the first rotating ring (20) is in contact with the wire drum (10); one side of the fixing ring (21) is provided with an annular groove (22); the inside of the annular groove (22) is rotatably connected to the second rotating ring (24), and the second rotating ring (24) is One end is fixedly connected to the first rotating ring (20), the inner wall of the annular groove (22) is provided with two groups of signal receiving plates (23), one end of the second rotating ring (24) is provided with two groups of receiving grooves (25), and one end of the receiving grooves (25) extends to the inside of the first rotating ring (20), the inside of the receiving grooves (25) is slidably connected with a signal connecting rod (26), and one end of the signal connecting rod (26) is respectively fitted with the signal receiving plate (23), one end of the signal connecting rod (26) is fixedly connected with a spring (27), and one end of the spring (27) is fixedly connected to the inner wall of the receiving groove (25).

6. The device for online monitoring temperature of a thermal well pipeline according to claim 5, characterized in that: The signal receiving plate (23) is a circular ring with different diameters, the two groups of signal connecting rods (26) are staggered, and the distances from the central axes of the two groups of signal connecting rods (26) to the midline axis of the second rotating ring (24) are different.

7. The device for online monitoring temperature of a thermal well pipeline according to claim 5, characterized in that: The optical cable assembly (11) comprises a PE protective sleeve (28), a stainless steel wire (29), a stainless steel seamless steel pipe (30), a filling grease (31) and an optical fiber core (32); the stainless steel wire (29) is evenly arranged inside the PE protective sleeve (28); the stainless steel seamless steel pipe (30) is arranged on the inner wall of the PE protective sleeve (28); the filling grease (31) is arranged inside the stainless steel seamless steel pipe (30); two groups of optical fiber cores (32) are arranged inside the filling grease (31), and the optical fiber cores (32) respectively pass through the first rotating ring (20) to be connected to the signal connecting rod (26).

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