A thermal conductivity detection assembly suitable for high pressure pipeline fluids

Abstract

The utility model discloses a kind of heat conductivity coefficient detection components suitable for high-pressure pipeline fluid, including high-pressure pipeline, sealing seat, PT100 temperature sensor and NTC thermistor;The same side of high-pressure pipeline is equipped with 2 mounting holes, and the center distance of 2 mounting holes is 50mm;Sealing seat is provided with 2 corresponding mounting hole, and one end of each sealing seat is sealingly fixed with the mounting hole of high-pressure pipeline, the other end is equipped with conical sealing surface, and sealing seat is provided with through via along axial direction;PT100 temperature sensor and NTC thermistor are respectively threaded in the via of 2 sealing seats, and the tip of both passes through high-pressure pipeline side wall and extends into high-pressure pipeline interior, the utility model is through setting PT100 temperature sensor and NTC thermistor utilize the different characteristics of the heat conductivity coefficient of not pass through meson, through the form of digital-analog to reverse the fluid distribution state in pipeline and sediment distribution state.Adapt to high-pressure pipeline fluid detection technical field.

Description

Technical Field

[0001] This utility model belongs to the field of high-pressure pipeline fluid detection technology, specifically, it relates to a thermal conductivity detection component suitable for high-pressure pipeline fluids. Background Technology

[0002] Currently, in the processes of oil and gas field development and storage, especially in offshore oil and gas fields, hydrates are easily formed in transport pipelines due to the influence of the marine environment. Under high-pressure geological conditions, hydrate deposition can easily clog pipelines. At the same time, solid sand particles in the ocean can also easily enter the pipelines and form sediments that block them. In order to provide early warning of blockage risks and take preventive measures, it is necessary to monitor the state of fluids and sediments in the pipeline in real time. Existing technologies do not have dedicated detection components for high-pressure pipelines. Utilizing the different thermal conductivity of different mesons, the distribution of fluids and sediments in the pipeline can be inverted through digital modeling. Therefore, we propose a thermal conductivity detection component suitable for high-pressure pipeline fluids. Utility Model Content

[0003] This invention provides a thermal conductivity detection component suitable for high-pressure pipeline fluids to solve the technical problems mentioned in the background art.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A thermal conductivity detection component suitable for high-pressure pipeline fluids includes a high-pressure pipeline, a sealing seat, a PT100 temperature sensor, and an NTC thermistor. The high-pressure pipeline has two mounting holes on the same side, with a center-to-center distance of 50 mm between the two mounting holes. Two sealing seats are provided corresponding to the mounting holes. One end of each sealing seat is sealed and fixed to the mounting hole of the high-pressure pipeline, and the other end has a conical sealing surface. Each sealing seat also has a through-hole along the axial direction. The PT100 temperature sensor and the NTC thermistor are respectively installed through the through-holes of the two sealing seats, with their tips passing through the sidewall of the high-pressure pipeline and extending into the pipeline. The end of the conical sealing surface is provided with a sealing and fixing structure for fixing the PT100 temperature sensor and the NTC thermistor.

[0005] Furthermore, the sealing and fixing structure includes a sealing cone, a sealing ring, and a sealing nut. One set of sealing cones and sealing rings is provided for each of the PT100 temperature sensor and the NTC thermistor. Each set of sealing cones is fitted onto the outside of the corresponding detection element, and one end of the sealing cone has a conical mating surface adapted to the conical sealing surface of the sealing seat, while the other end has an arc-shaped sealing surface. The sealing ring is fitted onto the outside of the corresponding detection element, and one end of the sealing ring has an arc-shaped mating surface adapted to the arc-shaped sealing surface of the sealing cone.

[0006] Furthermore, two sealing nuts are provided corresponding to the sealing seats. The sealing nuts are sleeved on the outside of the corresponding detection element. The outer wall of the sealing seat is provided with external threads, and the inner wall of the sealing nut is provided with internal threads that are adapted to the external threads of the sealing seat. One end of the sealing nut is provided with an annular boss for pressing the sealing ring. When the sealing nut is tightened, it can push the sealing ring to press the sealing cone head, so that the conical mating surface of the sealing cone head is pressed and fitted with the conical sealing surface of the sealing seat. The arc-shaped sealing surface of the sealing cone head is tightly fitted with the arc-shaped mating surface of the sealing ring.

[0007] Furthermore, the mounting holes on the high-pressure pipeline are concentric stepped holes or tapered threaded holes.

[0008] Furthermore, the sealing seat and the high-pressure pipeline are sealed and fixed by welding or threaded connection; when a threaded connection is used, one end of the sealing seat is provided with an external thread that matches the installation hole of the high-pressure pipeline.

[0009] Furthermore, the arc-shaped sealing surface of the sealing cone and the arc-shaped mating surface of the sealing ring are concave and convex arcs with the same radius, and the two form an annular sealing surface after they are fitted together.

[0010] The technological advancements achieved by this invention compared to existing technologies, due to the aforementioned structure, are as follows: During detection, different microcurrents are applied to the NTC thermistor to generate heat. This heat is conducted through the fluid medium within the high-pressure pipeline to the PT100 temperature sensor. The PT100 temperature sensor collects temperature data, and through data analysis and modeling, the distribution state of the measured medium within the high-pressure pipeline can be analyzed. Utilizing the different thermal conductivity of different mesons, the fluid distribution and sediment distribution within the pipeline are inverted through digital modeling. This invention is applicable to experiments such as the detection of natural gas hydrate formation, deposition, and distribution; the detection of hydrate formation and sediment distribution in pipelines during marine oil and gas extraction, storage, and transportation; and the monitoring of multiphase flow, fluid distribution, and solid phase deposition distribution in high-pressure pipelines. Attached Figure Description

[0011] The accompanying drawings are provided to further understand the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation thereof.

[0012] In the attached diagram: Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a cross-sectional view of the connection between this utility model and a high-pressure pipeline; Figure 3 This is a cross-sectional view of the sealing cone and sealing pressure ring of this utility model; Figure 4 This is a cross-sectional view of the sealing seat of this utility model; Figure 5 This is a cross-sectional view of the mounting holes of this utility model, which are concentric stepped holes and tapered threaded holes.

[0013] Components marked: 1. High-pressure pipeline; 2. Sealing seat; 3. Sealing cone; 4. Sealing ring; 5. Sealing nut; 6. PT100 temperature sensor; 7. NTC thermistor; 8. Mounting hole; 9. Conical sealing surface; 10. Arc-shaped sealing surface; 11. Arc-shaped mating surface. Detailed Implementation

[0014] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0015] This utility model discloses a thermal conductivity testing component suitable for high-pressure pipeline fluids, such as... Figure 1-5 As shown, the system includes a high-pressure pipeline 1, a sealing seat 2, a PT100 temperature sensor 6, and an NTC thermistor 7. Two mounting holes 8 are provided on the same side of the high-pressure pipeline 1, with a center-to-center distance of 50mm between them. Two sealing seats 2 are provided corresponding to the mounting holes 8. One end of each sealing seat 2 is sealed and fixed to the mounting hole 8 of the high-pressure pipeline 1, and the other end is provided with a conical sealing surface 9. A through hole is provided along the axial direction of each sealing seat 2. The PT100 temperature sensor 6 and the NTC thermistor 7 are respectively installed through the through holes of the two sealing seats 2, and their tips pass through the side wall of the high-pressure pipeline 1 and extend into the interior of the high-pressure pipeline 1. The end of the conical sealing surface 9 is provided with a sealing and fixing structure for fixing and sealing the PT100 temperature sensor 6 and the NTC thermistor 7. The working principle and advantages of this utility model are as follows: First, two mounting holes 8 with a center distance of 50mm are machined on the same side of the high-pressure pipeline 1 as the mounting reference for the sealing seat 2 and the detection element; the two sealing seats 2 are respectively aligned with the mounting holes 8 of the high-pressure pipeline 1, and a stable connection between the sealing seat 2 and the high-pressure pipeline 1 is achieved through a preset sealing and fixing method, ensuring a leak-free foundation under high-pressure environment; the PT100 temperature sensor 6 and the NTC thermistor 7 are respectively inserted into the through holes of the two sealing seats 2, and their positions are adjusted so that the tips pass through the side wall of the high-pressure pipeline 1 and extend into the interior of the high-pressure pipeline 1, ensuring that the detection end is in direct contact with the fluid inside the high-pressure pipeline 1; the sealing and fixing structure at the end of the conical sealing surface 9 of the sealing seat 2 completes the fixing of the PT100 temperature sensor 6 and the NTC thermistor 7. To prevent high-pressure fluid from leaking through the gap between the detection element and the sealing seat 2, this invention applies different microcurrents to the NTC thermistor 7 during detection, causing it to heat up. The heat is conducted through the fluid medium in the high-pressure pipeline 1 to the PT100 temperature sensor 6. The PT100 temperature sensor 6 collects temperature data, and after data analysis and modeling, the distribution state of the measured medium in the high-pressure pipeline 1 can be analyzed. Utilizing the different thermal conductivity of different mesons, the fluid distribution state and sediment distribution state in the pipeline are inverted through digital modeling. This invention can be applied to experiments such as the detection of natural gas hydrate formation, deposition and distribution, the detection of hydrate formation and sediment distribution in pipelines during marine oil and gas extraction, storage and transportation, and the monitoring of multiphase flow, fluid distribution and solid phase deposition distribution in high-pressure pipeline 1.

[0016] In a preferred embodiment of this utility model, the sealing and fixing structure includes a sealing cone 3, a sealing ring 4, and a sealing nut 5. One set of sealing cones 3 and sealing rings 4 are provided for each of the PT100 temperature sensor 6 and the NTC thermistor 7. Each set of sealing cones 3 is sleeved on the outside of the corresponding detection element. One end of the sealing cone 3 has a conical mating surface adapted to the conical sealing surface 9 of the sealing seat 2, and the other end has an arc-shaped sealing surface 10. The sealing ring 4 is sleeved on the outside of the corresponding detection element, and one end of the sealing ring 4... The end is provided with an arc-shaped mating surface 11 that matches the arc-shaped sealing surface 10 of the sealing cone 3; two sealing nuts 5 are provided corresponding to the sealing seat 2. The sealing nuts 5 are sleeved on the outside of the corresponding detection element. The outer wall of the sealing seat 2 is provided with external threads, and the inner wall of the sealing nuts 5 is provided with internal threads that match the external threads of the sealing seat 2. One end of the sealing nuts 5 is provided with an annular boss for pressing the sealing ring 4. When the sealing nuts 5 are tightened, they can push the sealing ring 4 to press the sealing cone 3, so that the conical mating surface of the sealing cone 3 and the conical sealing surface of the sealing seat 2 are mated. The sealing cone 3's arc-shaped sealing surface 10 and the sealing ring 4's arc-shaped mating surface 11 are tightly fitted together. In this embodiment, the sealing nut 5 moves towards the sealing seat 2, causing its internal thread to engage with the external thread of the sealing seat 2's outer wall. When the sealing nut 5 is tightened, its annular boss at the end applies uniform axial pressure to the sealing ring 4. This pressure is transmitted along the sealing ring 4 to the sealing cone 3. As the sealing nut 5 continues to tighten, the axial pressure causes the conical mating surface of the sealing cone 3 and the conical sealing surface 9 of the sealing seat 2 to deform under pressure. The pressure amplification characteristic of the conical structure fills the mating gap, forming the first high-pressure seal. At the same time, the arc-shaped mating surface 11 of the sealing ring 4 and the arc-shaped sealing surface 10 of the sealing cone 3 are tightly fitted and slightly deformed under pressure, forming a continuous, gapless annular sealing surface, constituting the second seal. Finally, the sealing cone 3 and the sealing ring 4, due to the radial contraction force generated by the compression, hold the outer wall of the detection element tightly, achieving stable fixation of the detection element. The double sealing structure and the fixation effect are achieved simultaneously.

[0017] In a preferred embodiment of this utility model, the mounting hole 8 on the high-pressure pipeline 1 is a concentric stepped hole or a tapered threaded hole; the sealing and fixing method between the sealing seat 2 and the high-pressure pipeline 1 is welding or threaded connection; when using threaded connection, one end of the sealing seat 2 is provided with an external thread that matches the mounting hole 8 of the high-pressure pipeline 1; when it is necessary to adapt to the high-pressure pipeline 1 made of metal, the mounting hole 8 is a concentric stepped hole, and the sealing seat 2 is welded and sealed in the mounting hole 8 to complete the fixing; when it is necessary to adapt to the high-pressure pipeline 1 made of non-metallic material, the external thread end of the sealing seat 2 is aligned with the tapered threaded hole of the high-pressure pipeline 1, and the sealing seat 2 is screwed clockwise. The guiding property of the tapered thread is used to ensure precise thread engagement. During the tightening process, the thread surfaces are squeezed against each other, and the sealing strip fills the thread gap to form a seal. This embodiment is compatible with both metal and non-metallic pipelines, and meets the needs of both permanent installation and removable maintenance scenarios, solving the problem of limited compatibility of a single fixing method, and covering the mainstream materials and usage scenarios of high-pressure pipelines 1 in oil and gas fields.

[0018] Specifically, the arc-shaped sealing surface 10 of the sealing cone 3 and the arc-shaped mating surface 11 of the sealing pressure ring 4 are concave and convex arcs with the same radius, and they form an annular sealing surface after being fitted together. In this embodiment, the design of concave and convex arcs with the same radius makes the arc surfaces of the sealing cone 3 and the sealing pressure ring 4 fit together completely to form a continuous annular sealing surface. Compared with partial contact sealing, the sealing area is larger and the sealing performance is more stable.

[0019] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A thermal conductivity testing component suitable for high-pressure pipeline fluids, characterized in that: The system includes a high-pressure pipeline (1), a sealing seat (2), a PT100 temperature sensor (6), and an NTC thermistor (7). The high-pressure pipeline (1) has two mounting holes (8) on the same side, with a center-to-center distance of 50 mm between the two mounting holes (8). The sealing seat (2) has two corresponding mounting holes (8). One end of each sealing seat (2) is sealed and fixed to the mounting hole (8) of the high-pressure pipeline (1), and the other end is provided with a conical sealing surface (9). The sealing seat (2) has a through hole along the axial direction. The PT100 temperature sensor (6) and the NTC thermistor (7) are respectively installed in the through holes of the two sealing seats (2), and the tips of both pass through the side wall of the high-pressure pipeline (1) and extend into the interior of the high-pressure pipeline (1). The end of the conical sealing surface (9) is provided with a sealing and fixing structure for fixing and sealing the PT100 temperature sensor (6) and the NTC thermistor (7).

2. The thermal conductivity detection component for high-pressure pipeline fluids according to claim 1, characterized in that: The sealing and fixing structure includes a sealing cone (3), a sealing ring (4), and a sealing nut (5). The sealing cone (3) and the sealing ring (4) are provided in one set for each of the PT100 temperature sensor (6) and the NTC thermistor (7). Each set of the sealing cone (3) is sleeved on the outside of the corresponding detection element. One end of the sealing cone (3) is provided with a conical mating surface that matches the conical sealing surface (9) of the sealing seat (2), and the other end is provided with an arc-shaped sealing surface (10). The sealing ring (4) is sleeved on the outside of the corresponding detection element, and one end of the sealing ring (4) is provided with an arc-shaped mating surface (11) that matches the arc-shaped sealing surface (10) of the sealing cone (3).

3. The thermal conductivity detection component for high-pressure pipeline fluids according to claim 2, characterized in that: Two sealing nuts (5) are provided corresponding to the sealing seat (2). The sealing nuts (5) are sleeved on the outside of the corresponding detection element. The outer wall of the sealing seat (2) is provided with an external thread. The inner wall of the sealing nut (5) is provided with an internal thread that matches the external thread of the sealing seat (2). One end of the sealing nut (5) is provided with an annular boss for squeezing the sealing ring (4). When the sealing nut (5) is tightened, it can push the sealing ring (4) to squeeze the sealing cone (3), so that the conical mating surface of the sealing cone (3) is squeezed and fitted with the conical sealing surface (9) of the sealing seat (2). The arc-shaped sealing surface (10) of the sealing cone (3) is tightly fitted with the arc-shaped mating surface (11) of the sealing ring (4).

4. The thermal conductivity detection component for high-pressure pipeline fluids according to claim 1, characterized in that: The mounting hole (8) on the high-pressure pipeline (1) is a concentric stepped hole or a tapered threaded hole.

5. The thermal conductivity detection component for high-pressure pipeline fluids according to claim 4, characterized in that: The sealing seat (2) and the high-pressure pipeline (1) are sealed and fixed by welding or threaded connection; when the threaded connection is used, one end of the sealing seat (2) is provided with an external thread that is compatible with the mounting hole (8) of the high-pressure pipeline (1).

6. The thermal conductivity detection component for high-pressure pipeline fluids according to claim 3, characterized in that: The arc-shaped sealing surface (10) of the sealing cone (3) and the arc-shaped mating surface (11) of the sealing ring (4) are concave and convex arcs with the same radius, and the two form an annular sealing surface after they are fitted together.

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