Temperature detection device with adjustable insertion depth and installation method thereof

Abstract

The invention relates to the technical field of oil-gas exploration and production, in particular to an insertion depth-adjustable temperature detection device and an installation method thereof, and the device is characterized in that a temperature transmitter is connected with one end of a sliding sleeve main body, the interior of the sliding sleeve main body is hollow, and a hollow spiral pipe is arranged in the hollow interior of the sliding sleeve main body; the top end of the temperature measuring rod is connected with the hollow spiral tube, one end of the lead is connected with the temperature transmitter, and the other end passes through the hollow spiral tube and the top end of the temperature measuring rod and then is connected with the temperature sensing element in the temperature measuring rod; the bottom end of the sliding sleeve body is connected with the anti-explosion locking mechanism, the bottom end of the temperature measuring rod penetrates through the anti-explosion locking mechanism and is located outside the sliding sleeve body, and the anti-explosion locking mechanism is used for locking and fixing the temperature measuring rod and the sliding sleeve body. The problems that the length of a conventional temperature transmitter is fixed, the conventional temperature transmitter cannot adapt to different measurement depths, customized temperature transmitters need to be used at various monitoring positions, and the use and maintenance cost is increased are solved.

Description

Technical Field

[0001] This invention relates to the field of oil and gas exploration and production technology, and in particular to an adjustable insertion depth temperature detection device and its installation method. Background Technology

[0002] Currently, fixed-depth temperature transmitters are used to measure temperature in oil and gas exploration and production. During use, to ensure measurement accuracy, the temperature transmitter's sensing element needs to be installed within the pipeline. This presents two main problems: First, the varying lengths of the sensing rods at different temperature measurement locations necessitate custom-made transmitters for each monitoring position, increasing operating costs. Furthermore, the unpredictable nature of damage and the availability of different transmitter specifications lead to difficulties in material preparation and excessive inventory buildup. Second, for temperature transmitters installed on well flanges, the limited operating space and difficulty in disassembly and assembly increase worker workload. Additionally, the inability to securely seal the transmitter allows water to enter the sensing jacket, affecting measurement accuracy. Summary of the Invention

[0003] This invention proposes an adjustable insertion depth temperature detection device and its installation method to solve the problems of fixed length of previous temperature transmitters, which cannot adapt to different measurement depths, and the need to use customized temperature transmitters at each monitoring position, resulting in increased usage and maintenance costs.

[0004] According to one aspect of the present invention, an adjustable insertion depth temperature detection device is provided, comprising: a temperature transmitter, a sliding sleeve body, a lead wire, a hollow spiral tube, a temperature measuring rod, and an explosion-proof locking mechanism; The temperature transmitter is connected to one end of the sliding sleeve body. The interior of the sliding sleeve body is hollow, and a hollow spiral tube is installed inside the hollow part of the sliding sleeve body. The top of the temperature measuring rod is connected to a hollow spiral tube. One end of the lead wire is connected to a temperature transmitter, and the other end passes through the hollow spiral tube and the top of the temperature measuring rod, and is connected to the temperature sensing element inside the temperature measuring rod. The bottom end of the sliding sleeve body is connected to an explosion-proof locking mechanism. The bottom end of the temperature measuring rod passes through the explosion-proof locking mechanism and is located outside the sliding sleeve body. The explosion-proof locking mechanism is used to lock and fix the temperature measuring rod to the sliding sleeve body.

[0005] Preferably, the explosion-proof locking mechanism includes: a fixed nut, a movable nut, and an expansion ring; The bottom of the sliding sleeve body is connected to the top of the fixed nut, and the bottom of the fixed nut has an internal thread; The movable nut has an external thread that matches the internal thread; The expansion ring is disposed inside the fixed nut, and is located between the bottom surface of the sliding sleeve body and the top surface of the movable nut; The temperature measuring rod passes through the expansion ring and the movable nut.

[0006] Preferably, it further includes: a limiting mechanism; The limiting mechanism is connected to the sliding sleeve body and the temperature measuring rod. The limiting mechanism is used to prevent the end of the temperature measuring rod near the hollow spiral tube from coming out of the interior of the sliding sleeve body.

[0007] Preferably, the limiting mechanism includes: A first annular protrusion is provided on the inner wall of the end of the sliding sleeve body away from the temperature transmitter, and a second annular protrusion is provided on the outer wall of the end of the temperature measuring rod close to the hollow spiral tube. The outer diameter of the second annular protrusion is larger than the inner diameter of the first annular protrusion.

[0008] Preferably, the diameter of the through hole through which the temperature measuring rod passes in the explosion-proof locking mechanism is consistent with the inner diameter of the first annular flange.

[0009] Preferably, the temperature measuring rod includes: a temperature measuring tube; The other end of the lead wire is inserted into the temperature measuring tube and connected to the temperature sensing element located at the bottom of the temperature measuring tube.

[0010] Preferably, the outer wall of the explosion-proof locking mechanism is provided with an external thread that matches the internal thread of the temperature measuring sleeve on the pipe to be measured.

[0011] Preferably, it further includes: a fixing mechanism; A fixing mechanism is provided on the outside of the sliding sleeve body near the temperature transmitter, and the fixing mechanism is used to connect the sliding sleeve body and the temperature transmitter.

[0012] Preferably, the fixing mechanism includes: a tightening nut; The tightening nut is sleeved on the outside of the sliding sleeve body, and the outer side wall of the tightening nut away from the sliding sleeve body is provided with an external thread that matches the internal thread of the bottom connection end of the temperature transmitter. The outer wall of the tightening nut near the main body of the sliding sleeve has a hexagonal structure.

[0013] According to one aspect of the present invention, an installation method for an adjustable insertion depth temperature detection device is provided, comprising: Pull the bottom of the temperature measuring rod out of the sliding sleeve body to its maximum extent, at which point the top of the temperature measuring rod is inside the sliding sleeve body; The temperature measuring rod and the sliding sleeve body are initially locked and fixed by the explosion-proof locking mechanism. At this time, except for the tension applied to the temperature measuring rod by the hollow spiral tube through its own elasticity, the relative position of the temperature measuring rod and the sliding sleeve body remains unchanged without any other external force. When an external force is applied to the temperature measuring rod, the temperature measuring rod can move back and forth in the sliding sleeve body. Insert the temperature measuring rod into the temperature measuring sleeve on the pipe to be measured. After it is fully inserted, remove the temperature measuring rod and finally lock it to the sliding sleeve body through the explosion-proof locking mechanism. At this time, when an external force is applied to the temperature measuring rod, the relative position of the temperature measuring rod and the sliding sleeve body remains unchanged. Insert the temperature measuring rod into the temperature measuring sleeve, and connect and fix the sliding sleeve body to the temperature measuring sleeve through the explosion-proof locking mechanism.

[0014] The present invention has at least the following beneficial effects: This invention proposes an adjustable insertion depth temperature detection device and its installation method. By setting up a telescopic hollow spiral tube and an explosion-proof locking mechanism for fixing the temperature measuring rod, the original temperature measuring device structure is changed from a fixed and non-adjustable temperature measuring rod to a more adaptable adjustable temperature detection device. This allows the length of the temperature measuring rod to be freely adjusted according to the detection depth, eliminating the need to prepare multiple specifications of temperature transmitters, thereby reducing the types and quantities of materials required, lowering construction costs, and improving work efficiency. Attached Figure Description

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present invention and, together with the specification, serve to explain the technical solutions of the present invention.

[0016] Figure 1 A schematic diagram of the adjustable insertion depth temperature detection device according to an embodiment of the present invention is shown; Figure 2 This diagram illustrates the structure of the sliding sleeve body and the explosion-proof locking mechanism according to an embodiment of the present invention. Figure 3 A schematic diagram of the temperature measuring rod and hollow spiral tube according to an embodiment of the present invention is shown. Figure 4 A cross-sectional view of the movable nut according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the expansion ring according to an embodiment of the present invention is shown; Figure 6 A cross-sectional view of an adjustable insertion depth temperature detection device according to an embodiment of the present invention is shown.

[0017] In the figure, 1-temperature transmitter, 2-sliding sleeve body, 3-lead wire, 4-hollow spiral tube, 5-temperature measuring rod, 6-fixed nut, 7-moving nut, 8-expansion ring, 9-first annular convex edge, 10-second annular convex edge, 11-temperature measuring tube, 12-temperature sensing element, 13-tightening nut. Detailed Implementation

[0018] Various exemplary embodiments, features, and aspects of the present invention will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0019] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0020] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0021] Furthermore, to better illustrate the present invention, numerous specific details are set forth in the following detailed embodiments. Those skilled in the art will understand that the present invention can be practiced without certain specific details. In some instances, methods, means, elements, and circuits well known to those skilled in the art have not been described in detail in order to highlight the spirit of the invention.

[0022] Figure 1 A schematic diagram of the adjustable insertion depth temperature detection device according to an embodiment of the present invention is shown; Figure 2 This diagram illustrates the structure of the sliding sleeve body and the explosion-proof locking mechanism according to an embodiment of the present invention. Figure 3 A schematic diagram of the temperature measuring rod and hollow spiral tube according to an embodiment of the present invention is shown. Figure 4 A cross-sectional view of the movable nut according to an embodiment of the present invention is shown; Figure 5 A schematic diagram of the expansion ring according to an embodiment of the present invention is shown; Figure 6 A cross-sectional view of an adjustable insertion depth temperature detection device according to an embodiment of the present invention is shown. Figure 1-6As shown, an adjustable insertion depth temperature detection device includes: a temperature transmitter 1, a sliding sleeve body 2, a lead wire 3, a hollow spiral tube 4, a temperature measuring rod 5, and an explosion-proof locking mechanism; the temperature transmitter 1 is connected to one end of the sliding sleeve body 2, the interior of the sliding sleeve body 2 is hollow, and a hollow spiral tube 4 is arranged inside the hollow interior of the sliding sleeve body 2; the top end of the temperature measuring rod 5 is connected to the hollow spiral tube 4, one end of the lead wire 3 is connected to the temperature transmitter 1, and the other end passes through the hollow spiral tube 4 and the top end of the temperature measuring rod 5, and is connected to a temperature sensing element 12 located inside the temperature measuring rod 5; the bottom end of the sliding sleeve body 2 is connected to the explosion-proof locking mechanism, and the bottom end of the temperature measuring rod 5 passes through the explosion-proof locking mechanism and is located outside the sliding sleeve body 2, the explosion-proof locking mechanism is used to lock and fix the temperature measuring rod 5 to the sliding sleeve body 2.

[0023] In this embodiment of the invention, the sliding sleeve body 2 is a cylinder with a hollow interior and open ends; the bottom end of the temperature transmitter 1 is connected to the top end of the sliding sleeve body 2 via a threaded structure. One end of the hollow spiral tube 4 is connected to the outer wall of the lead wire 3, and the other end is connected to the top end of the temperature measuring rod 5. When the hollow spiral tube 4 is in its natural state, most of the temperature measuring rod 5 is inside the sliding sleeve body 2, and the bottom end is outside the sliding sleeve body 2, only slightly protruding from the sliding sleeve body 2 and the explosion-proof locking mechanism.

[0024] When in use, pinch the bottom end of the temperature measuring rod 5 and pull the temperature measuring rod 5 outward to the maximum extent of the sliding sleeve body 2. Then, use the explosion-proof locking mechanism to initially lock and fix the part of the temperature measuring rod 5 inside the sliding sleeve body 2 to the sliding sleeve body 2. The maximum extent is: while keeping the top end of the temperature measuring rod 5 inside the sliding sleeve body 2, pull the temperature measuring rod 5 outward to the maximum extent of the sliding sleeve body 2.

[0025] When the temperature measuring rod 5 is pulled out to its maximum extent, the hollow spiral tube 4 inside the sliding sleeve body 2 will deform and elongate. Because its own elasticity will exert a certain pulling force on the temperature measuring rod 5 when it is elongated, the force used by the explosion-proof locking mechanism to initially lock and fix the temperature measuring rod 5 must be able to offset or slightly exceed the elasticity of the hollow spiral tube 4 when the temperature measuring rod 5 is pulled out of the sliding sleeve body 2 to its maximum extent. After initial locking and fixing, if additional pulling or pushing force is applied to the bottom end of the temperature measuring rod 5, the top end of the temperature measuring rod 5 will move back and forth inside the sliding sleeve body 2.

[0026] During installation, insert the temperature measuring rod 5 into the temperature measuring sleeve of the pipe to be tested. When the sliding sleeve body 2 moves to a position where it can be properly fixedly connected with the temperature measuring sleeve, pull out the temperature measuring rod 5. Finally, use the explosion-proof locking mechanism to lock the temperature measuring rod 5 to the sliding sleeve body 2. After final locking, when a certain external force is applied to the temperature measuring rod 5 in a direction close to or away from the sliding sleeve body 2, the temperature measuring rod 5 will not move within the sliding sleeve body 2.

[0027] After initial locking and securing, during the initial insertion of the temperature measuring rod 5 into the temperature measuring sleeve, if the length of the temperature measuring rod 5 extending outside the sliding sleeve body 2 is greater than the depth inside the temperature measuring sleeve, the bottom end of the temperature measuring rod 5 will be pushed when it contacts the bottom of the temperature measuring sleeve, thus moving inward into the sliding sleeve body 2, i.e., retracting into the body. Once the sliding sleeve body 2 has moved to a position where it can properly connect with the temperature measuring sleeve, the length of the temperature measuring rod 5 remaining outside the sliding sleeve body 2 after removal is the matching length with the temperature measuring sleeve.

[0028] After final locking and fixing, the temperature measuring rod 5 is reinserted into the temperature measuring sleeve, and the sliding sleeve body 2 is connected and fixed to the temperature measuring sleeve through the explosion-proof locking mechanism, thus completing the installation.

[0029] The hollow spiral tube 4 is made of polyurethane. The hollow spiral tube 4 enables the temperature measuring rod 5 to spring back and protects the lead wire 3, preventing it from tangling or being damaged. The sliding sleeve body 2 provides a movable cavity for the temperature measuring rod 5, sealing the working part to prevent media leakage and potential safety accidents.

[0030] In this invention, the explosion-proof locking mechanism includes: a fixed nut 6, a movable nut 7, and an expansion ring 8; the bottom of the sliding sleeve body 2 is connected to the top of the fixed nut 6, and the bottom of the fixed nut 6 has an internal thread; the movable nut 7 has an external thread that matches the internal thread; the expansion ring 8 is disposed inside the fixed nut 6, and is located between the bottom surface of the sliding sleeve body 2 and the top surface of the movable nut 7; the temperature measuring rod 5 passes through the expansion ring 8 and the movable nut 7.

[0031] In this embodiment of the invention, the top end of the fixed nut 6 is connected to the bottom end of the sliding sleeve body 2 by welding; the fixed nut 6 is hollow inside with openings at both ends, and has internal threads inside the hollow part; the diameter of the hollow part of the fixed nut 6 is larger than the diameter of the sliding sleeve body 2, and the interior of the fixed nut 6 is connected to the interior of the sliding sleeve body 2; the diameter of the top opening inside the fixed nut 6 is larger than the outer diameter of the hollow spiral tube 4.

[0032] The upper portion of the outer wall of the movable nut 7 has an external thread that matches the internal thread of the hollow interior of the fixed nut 6. The shape of the hollow interior of the fixed nut 6 matches the external shape of the threaded portion of the movable nut 7. The movable nut 7 has a through hole through which the temperature measuring rod 5 can pass.

[0033] During installation, the top end of the temperature measuring rod 5 is connected to the hollow spiral tube 4 and kept inside the sliding sleeve body 2; the bottom end of the temperature measuring rod 5 passes through the hollow interior of the fixed nut 6, the expansion ring 8, and the through hole of the movable nut 7.

[0034] The expansion ring 8 is placed inside the hollow interior of the fixed nut 6, and then the movable nut 7 is gradually screwed into the fixed nut 6 through the matching thread structure. As the movable nut 7 gradually approaches the top of the hollow interior of the fixed nut 6, the fixed nut 6 and the movable nut 7 gradually clamp the expansion ring 8 between them, thereby causing the expansion ring 8 to expand inward and outward along its radial direction. When it expands inward, it gradually comes into contact with the outer wall of the temperature measuring rod 5 that passes through its inner ring, so that the friction after it comes into contact can clamp and fix the temperature measuring rod 5, keeping the temperature measuring rod 5 inside the sliding sleeve body 2 without moving.

[0035] During the initial tightening, the movable nut 7 is screwed into the fixed nut 6 to a first predetermined length. At this time, when the hollow spiral tube 4 is in a stretched state, the temperature measuring rod 5 can remain stationary. Simultaneously, when a predetermined external force is applied to the temperature measuring rod 5, it can move along the inside of the sliding sleeve body 2. During the final tightening, the movable nut 7 is screwed into the fixed nut 6 to a second predetermined length. At this time, when a predetermined external force is applied to the temperature measuring rod 5, it will not move. The initial tightening is to facilitate adjustment of the length of the temperature measuring rod 5 outside the sliding sleeve body 2, while the final tightening ensures that the temperature measuring rod 5 remains stationary during temperature measurement.

[0036] exist Figure 5 Figure a shows a top view of the expansion ring 8, and Figure b shows a front view of the expansion ring 8. The outer diameter of the expansion ring 8 is larger than the diameter of the top opening inside the fixed nut 6. When the movable nut 7 and the fixed nut 6 clamp the two sides of the expansion ring 8, the expansion ring 8 expands and simultaneously comes into contact with the top of the fixed nut 6, the temperature measuring rod 5, and the top surface of the movable nut 7. This achieves a seal at the top opening of the through hole of the movable nut 7 and the top opening inside the fixed nut 6, thereby preventing the medium in the pipeline from entering the sliding sleeve body 2 in the event of leakage through the perforation of the temperature measuring sleeve, which could cause leakage and short circuit in the lead wire 3 and the temperature transmitter 1, thus providing an explosion-proof function.

[0037] In this invention, a limiting mechanism is also included; the limiting mechanism is connected to the sliding sleeve body 2 and the temperature measuring rod 5, and the limiting mechanism is used to prevent the end of the temperature measuring rod 5 near the hollow spiral tube 4 from coming out of the interior of the sliding sleeve body 2.

[0038] In this invention, the limiting mechanism includes: a first annular protrusion 9 is provided on the inner side wall of the end of the sliding sleeve body 2 away from the temperature transmitter 1, and a second annular protrusion 10 is provided on the outer side wall of the end of the temperature measuring rod 5 near the hollow spiral tube 4; the outer diameter of the second annular protrusion 10 is larger than the inner diameter of the first annular protrusion 9.

[0039] In this embodiment of the invention, a first annular protrusion 9 is provided on the inner sidewall of the bottom opening of the sliding sleeve body 2, and a second annular protrusion 10 is provided on the outer sidewall of the top of the temperature measuring rod 5. When the temperature measuring rod 5 is pulled out of the sliding sleeve body 2, when it reaches its maximum limit, the second annular protrusion 10 will be locked above the first annular protrusion 9, thereby preventing the temperature measuring rod 5 from being pulled out of the sliding sleeve body 2. At the same time, the limiting mechanism can prevent excessive stretching from damaging the lead wire 3.

[0040] The first annular protrusion 9 can also be set on the inner wall of the top opening inside the fixed nut 6.

[0041] In this invention, the diameter of the through hole through which the temperature measuring rod 5 passes in the explosion-proof locking mechanism is consistent with the inner diameter of the first annular convex edge 9.

[0042] In this embodiment of the invention, the through hole on the explosion-proof locking mechanism for the temperature measuring rod 5 to pass through is the through hole on the movable nut 7. That is, the inner diameter of the first annular protrusion 9 is the same as the diameter of the through hole on the movable nut 7, and the gap between the inner wall of the through hole and the temperature measuring rod 5 should not be too large, so as to prevent the temperature measuring rod 5 from tilting and deviating from the central axis when it moves into the sliding sleeve body 2 during the process of inserting the temperature measuring rod 5 into the temperature measuring sleeve to adjust its length, causing it to get stuck and unable to retract into the sliding sleeve body 2 or to be damaged due to excessive force.

[0043] In this invention, the temperature measuring rod 5 includes: a temperature measuring tube 11; the other end of the lead wire 3 is inserted into the temperature measuring tube 11 and connected to the temperature sensing element 12 located at the bottom of the temperature measuring tube 11.

[0044] In this embodiment of the invention, the top end of the temperature measuring tube 11 is connected to a hollow spiral tube 4. One end of the lead wire 3 is connected to the temperature transmitter 1, and the other end passes through the hollow spiral tube 4 and is inserted into the interior of the temperature measuring tube 11 through the top opening, connecting to the temperature sensing element 12; the temperature sensing element 12 is located at the bottom inside the temperature measuring tube 11. A second annular flange 10 is provided on the outer side wall of the temperature measuring tube 11 near the top, and the two can be an integrated structure. The inner diameter of the first annular flange 9 is larger than the outer diameter of the temperature measuring tube 11.

[0045] The top end of the temperature measuring tube 11 is inside the sliding sleeve body 2, and the bottom end passes through the fixed nut 6 and is located outside the sliding sleeve body 2 and the fixed nut 6. In use, the temperature measuring tube 11 is pulled out of the sliding sleeve body 2 to its maximum extent, i.e., the second annular convex edge 10 contacts the first annular convex edge; the bottom end of the temperature measuring tube 11 passes through the expansion ring 8 and the movable nut 7 respectively. By threading the movable nut 7 and the fixed nut 6 together, the expansion ring 8 is compressed and expanded, thereby clamping and fixing the temperature measuring tube 11, achieving fixation and sealing of the temperature measuring tube 11.

[0046] In this invention, the outer wall of the explosion-proof locking mechanism is provided with an external thread that matches the internal thread of the temperature measuring sleeve on the 11 temperature measuring tubes.

[0047] In this embodiment of the invention, an external thread matching the internal thread at the opening of the temperature measuring sleeve is provided on the outer wall of the fixed nut 6 near the bottom end, that is, the fixed nut 6 has internal and external threads and a through hole in the middle.

[0048] When connecting the temperature measuring sleeve and the sliding sleeve body 2, adjust the extension length of the temperature measuring rod 5 and connect the movable nut 7. Then, insert the fixed nut 6 into the temperature measuring sleeve and tighten the fixed nut 6 and the temperature measuring sleeve through the matching thread structure.

[0049] Among them, the outer part of the fixed nut 6 near the top is a prism or hexagonal structure. The prism or hexagonal structure is used to cooperate with the wrench to clamp the fixed nut 6 to rotate its sliding sleeve body 2, so as to realize the quick assembly and disassembly of the sliding sleeve body 2.

[0050] In this invention, a fixing mechanism is also included; the sliding sleeve body 2 is provided with a fixing mechanism near the outside of the temperature transmitter 1, and the fixing mechanism is used to connect the sliding sleeve body 2 and the temperature transmitter 1.

[0051] In this invention, the fixing mechanism includes: a tightening nut 13; the tightening nut 13 is sleeved on the outside of the sliding sleeve body 2, and the outer side wall of the tightening nut 13 away from the sliding sleeve body 2 is provided with an external thread that matches the internal thread of the bottom connection end of the temperature transmitter 1; the outer side wall of the tightening nut 13 near the sliding sleeve body 2 is hexagonal in shape.

[0052] In this embodiment of the invention, the bottom end of the tightened nut 13 is welded to the sliding sleeve body 2. During installation, the temperature transmitter 1 is connected to the tightened nut 13 via a threaded structure. After adjusting the extension length of the temperature measuring rod 5, the temperature measuring rod 5 is inserted into the temperature measuring sleeve.

[0053] Because the set nut 6 is located near the bottom of the sliding sleeve body 2, when connecting the sliding sleeve body 2 to the temperature measuring sleeve, if it is a temperature well flange type temperature measuring sleeve, a flange is provided at the opening of the temperature measuring sleeve. When it is necessary to connect the set nut 6 at the lower end of the sliding sleeve body 2 to the temperature measuring sleeve, the position of the flange will obstruct the set nut 6 and part of the sliding sleeve body 2, resulting in a narrow operating space and making it impossible to clamp and rotate the set nut 6 with a wrench, causing difficulties in disassembling and assembling the sliding sleeve body 2. By setting the outer wall of the tightening nut 13 near the top of the sliding sleeve body 2 to a prism or hexagonal structure, the sliding sleeve body 2 and the set nut 6 can be rotated by clamping the tightening nut 13 with a wrench during connection, achieving quick disassembly and assembly.

[0054] A sealing ring is also provided between the tightened nut 13 and the mounting port at the bottom of the temperature transmitter 1 to seal the inside of the sliding sleeve body 2 and prevent rainwater and other liquids from entering.

[0055] In this invention, an installation method for an adjustable insertion depth temperature detection device is also proposed, comprising: Step S01: Pulling the bottom end of the temperature measuring rod 5 out of the sliding sleeve body 2 to its maximum extent, at which point the top end of the temperature measuring rod 5 is inside the sliding sleeve body 2; Step S02: Initially locking and fixing the temperature measuring rod 5 to the sliding sleeve body 2 using an explosion-proof locking mechanism. At this point, except for the tension applied to the temperature measuring rod 5 by the hollow spiral tube 4 through its own elasticity, the relative position of the temperature measuring rod 5 and the sliding sleeve body 2 remains unchanged under no other external force. When an external force is applied to the temperature measuring rod 5, the temperature measuring rod 5 can move back and forth inside the sliding sleeve body 2; Step S03: Insert the temperature measuring rod 5 into the temperature measuring sleeve on the tube to be measured 11. After it is fully inserted, take out the temperature measuring rod 5 and finally lock and fix the temperature measuring rod 5 to the sliding sleeve body 2 through the explosion-proof locking mechanism. At this time, when an external force is applied to the temperature measuring rod 5, the relative position of the temperature measuring rod 5 and the sliding sleeve body 2 remains unchanged; Step S04: Insert the temperature measuring rod 5 into the temperature measuring sleeve and connect and fix the sliding sleeve body 2 to the temperature measuring sleeve through the explosion-proof locking mechanism.

[0056] In this embodiment of the invention, when in use, pinch the bottom end of the temperature measuring tube 11 outside the fixed nut 6, and pull the temperature measuring rod 5 outward to the maximum extent of the sliding sleeve body 2, that is, the first annular convex edge 9 contacts the second annular convex edge 10. At this time, the top end of the temperature measuring tube 11 is inside the fixed nut 6.

[0057] Pass the bottom end of the temperature measuring tube 11 through the expansion ring 8 and the movable nut 7 respectively. Place the expansion ring 8 into the fixed nut 6, and connect the movable nut 7 and the fixed nut 6 with a threaded connection. After the movable nut 7 is gradually screwed into the fixed nut 6 for a first predetermined length, the movable nut 7 and the fixed nut 6 compress the expansion ring 8. After the expansion ring 8 expands, it initially clamps and fixes the temperature measuring tube 11, keeping the temperature measuring tube 11 in its current position. At this time, you can test whether the temperature measuring tube 11 can move within the sliding sleeve body 2 by pulling it. If it cannot move, loosen the movable nut 7 appropriately.

[0058] Insert the temperature measuring tube 11 into the temperature measuring sleeve of the pipe to be tested, and connect the two by threading the fixed nut 6 with the temperature measuring sleeve. During this process, when the bottom end of the temperature measuring tube 11 contacts the bottom of the temperature measuring sleeve, further insertion will push the temperature measuring tube 11 back into the fixed nut 6 and the sliding sleeve body 2. When the fixed nut 6 is connected to the temperature measuring sleeve, the length of the temperature measuring tube 11 outside the sliding sleeve body 2 and the fixed nut 6 is the optimal length for matching the temperature measuring sleeve.

[0059] Pull out the temperature measuring rod 5, and continue to screw the movable nut 7 into the fixed nut 6 to finally lock and fix the temperature measuring rod 5, the sliding sleeve body 2, and the fixed nut 6. At this time, if the temperature measuring tube 11 is pulled, it will remain in its current position.

[0060] Reinsert the temperature measuring tube 11 into the temperature measuring sleeve, and connect and fix the sliding sleeve body 2 to the temperature measuring sleeve by rotating the set nut 6 with a wrench or tightening the nut 13, thereby completing the installation.

[0061] The temperature measuring tube 11 and the sliding sleeve body 2 are temporarily fixed by the fixed nut 6, expansion ring 8 and movable nut 7, so that the temperature measuring tube 11 can move up and down to adjust its length within the sliding sleeve body 2, achieving telescopic adjustment. Then, the length of the temperature measuring tube 11 is adjusted to be completely matched with the temperature measuring depth of the temperature measuring sleeve by the first insertion, and the final tightening is performed by the second insertion. In this way, the bottom end of the temperature measuring tube 11 and the temperature sensing element 12 can always keep in contact with the working part during temperature measurement, thereby improving the measurement accuracy.

[0062] It is understood that the various method embodiments mentioned above in this invention can be combined with each other to form combined embodiments without violating the principle and logic. Due to space limitations, this invention will not elaborate further.

[0063] Those skilled in the art will understand that, in the above-described method of the specific implementation, the order in which each step is written does not imply a strict execution order and does not constitute any limitation on the implementation process. The specific execution order of each step should be determined by its function and possible internal logic.

[0064] This invention features a simple structure and easy operation. The lead wire between the temperature transmitter and the temperature probe is threaded through a hollow spiral tube. This design prevents damage to the lead wire during the sliding of the temperature measuring rod, while also allowing for the extension and retraction of the lead wire. The freely adjustable length of the temperature measuring rod allows for adjustment based on the depth of the working area, meeting different insertion depth requirements and reducing the variety and quantity of temperature transmitter components needed. Limiting ends on both the temperature measuring rod and the sliding sleeve body prevent damage to the lead wire during extension and prevent the temperature measuring rod from overflowing the sliding sleeve body. A fixed nut and a movable nut connected to the lower end of the sliding sleeve body, along with an expansion ring inserted into the temperature measuring rod, ensure that the temperature measuring rod remains stationary under the tension of the hollow spiral tube after initial tightening, while allowing free movement under external force. Further tightening achieves fixation, sealing, and explosion-proof protection for the temperature measuring rod. A fixing nut at the top of the sliding sleeve body eliminates space constraints during installation, improving work efficiency.

[0065] This invention has been tested on 160 units at 7 gas gathering stations in oil and gas exploration and production units. After being put into use, various models of temperature transmitters were replaced by the adjustable insertion depth temperature detection device of this invention, realizing applicability to all sizes of installation conditions, reducing the number of spare temperature transmitters, and improving the coverage of spare gauges. For the installation of temperature transmitters with flange-type temperature measuring sleeves in wells, it prevents rainwater from seeping into the measuring sleeve, achieving a reliable seal, accurately monitoring operating parameters, improving measurement accuracy, and saving disassembly and assembly time from 6-10 minutes to 50 seconds, reducing the labor intensity of workers, improving work efficiency, and making it suitable for application in the oil and gas exploration and production industry.

[0066] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or technical improvements to the embodiments in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. An adjustable depth of insertion temperature detection device, characterized by, Include: Temperature transmitter (1), sliding sleeve body (2), lead wire (3), hollow spiral tube (4), temperature measuring rod (5) and explosion-proof locking mechanism; The temperature transmitter (1) is connected to one end of the sliding sleeve body (2), the inside of the sliding sleeve body (2) is hollow, and the hollow spiral tube (4) is arranged in the hollow inside of the sliding sleeve body (2); The top end of the temperature measuring rod (5) is connected to the hollow spiral tube (4), one end of the lead wire (3) is connected to the temperature transmitter (1), and the other end passes through the hollow spiral tube (4) and the top end of the temperature measuring rod (5) and is connected to the temperature sensing element (12) inside the temperature measuring rod (5); The bottom end of the sliding sleeve body (2) is connected to the explosion-proof locking mechanism, the bottom end of the temperature measuring rod (5) passes through the explosion-proof locking mechanism and is located outside the sliding sleeve body (2), and the explosion-proof locking mechanism is used to lock and fix the temperature measuring rod (5) and the sliding sleeve body (2).

2. The adjustable insertion depth temperature detection device of claim 1, wherein, The explosion-proof locking mechanism comprises a fixed nut (6), a movable nut (7) and an expansion ring (8); The bottom of the sliding sleeve body (2) is connected to the top end of the fixed nut (6), and the bottom end of the fixed nut (6) has an internal thread; The movable nut (7) has an external thread matched with the internal thread; The expansion ring (8) is arranged in the inside of the fixed nut (6) and is located between the bottom surface of the sliding sleeve body (2) and the top surface of the movable nut (7); The temperature measuring rod (5) passes through the expansion ring (8) and the movable nut (7).

3. The adjustable insertion depth temperature detection device of claim 1, wherein, Further comprising: Limiting mechanism; The limiting mechanism is connected with the sliding sleeve body (2) and the temperature measuring rod (5), and the limiting mechanism is used to prevent the temperature measuring rod (5) from being pulled out of the inside of the sliding sleeve body (2) from one end close to the hollow spiral tube (4).

4. The adjustable insertion depth temperature detection device of claim 3, wherein, The limiting mechanism comprises: A first annular protrusion (9) is arranged on the inner side wall of the end of the sliding sleeve body (2) away from the temperature transmitter (1), and a second annular protrusion (10) is arranged on the outer side wall of the end of the temperature measuring rod (5) close to the hollow spiral tube (4); The outer diameter of the second annular protrusion (10) is greater than the inner diameter of the first annular protrusion (9).

5. The adjustable depth temperature detection device according to claim 4, wherein: The diameter of the through hole on the explosion-proof locking mechanism for the temperature measuring rod (5) to pass through is consistent with the inner diameter of the first annular protrusion (9).

6. The adjustable insertion depth temperature detection device of claim 1, wherein, The temperature measuring rod (5) comprises a temperature measuring tube (11); The other end of the lead wire (3) is inserted into the temperature measuring tube (11) and connected with the temperature sensing element (12) at the bottom inside the temperature measuring tube (11).

7. The adjustable depth temperature detection device according to claim 1, wherein: An external thread matched with the internal thread of the temperature measuring sleeve on the to-be-measured temperature measuring tube (11) is arranged on the outer side wall of the explosion-proof locking mechanism.

8. A depth adjustable temperature detection device according to any one of claims 1-7, characterized in that Further comprising: Fixing mechanism; The outside of the sliding sleeve body (2) close to the temperature transmitter (1) is provided with a fixing mechanism, and the fixing mechanism is used to connect the sliding sleeve body (2) and the temperature transmitter (1).

9. The adjustable insertion depth temperature detection device of claim 8, wherein, The fixing mechanism comprises a screw nut (13); The screw nut (13) is sleeved outside the sliding sleeve body (2), and an outer thread matched with an inner thread of a bottom connecting end of the temperature transmitter (1) is arranged on an outer side wall of a part of the screw nut (13) away from the sliding sleeve body (2); The outer side wall of the part of the screw nut (13) close to the sliding sleeve body (2) is a hexagonal structure.

10. A method for installing an adjustable insertion depth temperature detection device, characterized in that, Comprise: Pull the bottom end of the temperature measuring rod out of the sliding sleeve body to the maximum limit, at this time the top end of the temperature measuring rod is inside the sliding sleeve body; Preliminary locking and fixing of the temperature measuring rod and the sliding sleeve body is performed through the explosion-proof locking mechanism, at this time, except that the hollow spiral pipe exerts a pulling force on the temperature measuring rod through its own elastic force, the relative position of the temperature measuring rod and the sliding sleeve body does not change under the condition that no other external force is applied, when external force is applied to the temperature measuring rod, the temperature measuring rod can move back and forth in the sliding sleeve body; Insert the temperature measuring rod into the temperature measuring sleeve on the pipeline to be measured, and then take out the temperature measuring rod, and finally lock and fix the temperature measuring rod and the sliding sleeve body through the explosion-proof locking mechanism, at this time, when external force is applied to the temperature measuring rod, the relative position of the temperature measuring rod and the sliding sleeve body does not change; Insert the temperature measuring rod into the temperature measuring sleeve, and connect and fix the sliding sleeve body and the temperature measuring sleeve through the explosion-proof locking mechanism.

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