A high-temperature-resistant stress monitoring device suitable for long heat supply pipelines

Abstract

The utility model discloses a kind of high-temperature-resistant stress monitoring devices suitable for long heat pipeline, including stress monitoring mechanism, further include: positioning fixed component, heat insulation sleeve and wrapping sleeve, wherein heat insulation sleeve is covered and set on the stress monitoring section outer wall of heat pipeline, the outer fixed covering wrapping sleeve of heat insulation sleeve, the circumferential outer wall of heat insulation sleeve is radially fixed and set with multiple rubber columns, and the axial both ends of heat insulation sleeve are positioned by the radial hoop of positioning fixed component set on heat pipeline;The other end of rubber column cooperates with the stress input end of stress monitoring mechanism, to transmit the deformation stress of heat insulation sleeve to stress monitoring mechanism. The stress monitoring device effectively insulates the conduction heat dissipation and radiation heat dissipation of heat pipeline, avoids stress monitoring device to be damaged and fail under the high-temperature environment, and structure is simple, easy to implement.

Description

Technical Field

[0001] This utility model relates to the field of pipeline stress monitoring technology, specifically a high-temperature stress monitoring device suitable for long-distance heat transmission pipelines. Background Technology

[0002] During the operation of long-distance heat pipelines, the pipelines are in a high-temperature and high-pressure environment for a long time. Monitoring the stress state of the pipeline is crucial to ensuring its safe operation. However, existing stress sensors are prone to performance degradation, damage or even failure under high-temperature conditions because they do not involve heat insulation measures, and cannot meet the monitoring needs of long-distance heat pipelines.

[0003] Therefore, designing a fixed structure for a stress monitoring device that can isolate heat dissipation from pipeline conduction and radiation while ensuring the performance of pipeline stress monitoring has become a technical problem that urgently needs to be solved by those in the field. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. Therefore, one objective of this invention is to provide a high-temperature stress monitoring device suitable for long-distance heat pipelines. This stress monitoring device effectively isolates the heat pipeline from conductive and radiative heat dissipation, preventing damage and failure of the stress monitoring device under high-temperature conditions. Furthermore, it has a simple structure and is easy to implement.

[0005] To address the aforementioned problems, this utility model provides a high-temperature stress monitoring device suitable for long-distance heat pipelines, comprising a stress monitoring mechanism, and further comprising: a positioning and fixing component, a heat insulation sleeve, and a wrapping sleeve. The heat insulation sleeve is fitted over the outer wall of the stress monitoring section of the heat pipeline, and the outer surface of the heat insulation sleeve is fixedly covered by the wrapping sleeve. Multiple rubber columns are radially fixed on the circumferential outer wall of the heat insulation sleeve, and the axial ends of the heat insulation sleeve are radially clamped and positioned by the positioning and fixing component fitted over the heat pipeline. The middle section of the rubber column slides through the wrapping sleeve, and the other end of the rubber column cooperates to support the stress input end of the stress monitoring mechanism, so as to transfer the deformation stress of the heat insulation sleeve to the stress monitoring mechanism.

[0006] Preferably, the positioning component includes two opposing arc-shaped fixing plates that are spliced ​​and fixed together, and also includes an anti-slip sleeve that covers and sleeves the outer periphery of the heat pipeline and the end of the heat insulation sleeve; multiple fastening components are arc-shapedly distributed and radially adjusted and inserted on the arc-shaped fixing plates, and the fastening components radially abut against the circumferential outer wall of the anti-slip sleeve.

[0007] Preferably, both ends of the arc-shaped fixing plate are uniformly provided with wing plates, and the wing plates of two adjacent arc-shaped fixing plates are provided with strip-shaped snap-fit ​​grooves facing away from each other; a concave snap-fit ​​cover with a π-shaped cross section is slidably fastened on the strip-shaped snap-fit ​​groove; strip-shaped snap-fit ​​blocks that slide and connect in the strip-shaped snap-fit ​​groove are uniformly provided on the inner walls of both sides of the concave snap-fit ​​cover, and the maximum distance between the wing plates of two adjacent arc-shaped fixing plates is constrained by the concave snap-fit ​​cover.

[0008] Preferably, the fastening assembly includes a threaded rod and a pressing fixing plate, wherein the threaded rod is threaded through and connected to the arc-shaped fixing plate, and one end of the threaded rod rotates circumferentially and is axially limited and connected to the pressing fixing plate; an anti-slip groove is integrally formed on one side surface of the pressing fixing plate, and the side surface of the pressing fixing plate with the anti-slip groove is provided with an adjustable constraint force by the threaded rod to abut against the circumferential outer wall of the anti-slip sleeve.

[0009] Preferably, the top and bottom of the concave snap-fit ​​cover are both connected with multiple safety bolts, which are radially inserted into the circumferential outer wall of the arc-shaped fixing plate and threadedly connected to the arc-shaped fixing plate.

[0010] The advantages of this utility model compared with the prior art are as follows:

[0011] In this invention, the positioning and fixing component forms a ring-shaped fixing structure through four symmetrically distributed arc-shaped fixing plates. Two sets of arc-shaped fixing plates are flexibly connected by anti-slip sleeves. The elastic deformation of the rubber column absorbs the displacement stress caused by the thermal expansion and contraction of the pipeline, avoiding sensor damage caused by rigid connection. The diameter of the anti-slip sleeve is smaller than that of the fixing plate, forming a stepped limiting structure. This structure can enhance the friction between the sleeve and the outer wall of the pipeline through the texture of the sleeve surface, and can also prevent excessive slippage of the sleeve through the edge of the fixing plate, achieving dynamic adaptive fixing. While ensuring installation stability, this design effectively reduces the impact of pipeline deformation on the monitoring device under high temperature environment through elastic buffering and limiting structure, improving the reliability of long-term monitoring. It is especially suitable for axial / radial displacement compensation scenarios caused by temperature gradients in long-distance pipelines. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the three-dimensional installation structure of this utility model;

[0014] Figure 2 This is a three-dimensional exploded structure diagram of the present invention;

[0015] Figure 3 This is a top view of a partially exploded structure of the present invention.

[0016] Figure 4 This is a schematic diagram of the partially exploded structure of this utility model (head-up view);

[0017] Figure 5 This is a schematic diagram of the partial explosion structure of this utility model (viewed from below).

[0018] 1-Stress monitoring mechanism; 11-Rubber column; 12-Wrapping sleeve; 13-Insulation sleeve;

[0019] 2-Positioning and fixing component; 21-Arc-shaped fixing plate; 211-Strip-shaped snap-fit ​​groove; 22-Anti-slip sleeve; 23-Concave snap-fit ​​cover; 231-Mounting bolt; 232-Strip-shaped locking block;

[0020] 3-Fastening assembly; 31-Threaded rod; 32-Pressing fastening plate; 33-Anti-slip groove. Detailed Implementation

[0021] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0023] The present invention will now be described in further detail with reference to the accompanying drawings.

[0024] Combination Figures 1-5As shown, this utility model discloses a high-temperature stress monitoring device suitable for long-distance heat pipelines, including a stress monitoring mechanism 1, and further including: a positioning and fixing component 2, a heat insulation sleeve 13, and a wrapping sleeve 12. The heat insulation sleeve 13 is wrapped around the outer wall of the stress monitoring section of the heat pipeline, and the outer surface of the heat insulation sleeve 13 is fixedly covered by the wrapping sleeve 12. Multiple rubber columns 11 are radially fixed on the circumferential outer wall of the heat insulation sleeve 13, and the two ends of the heat insulation sleeve 13 are radially clamped and positioned by the positioning and fixing component 2 wrapped around the heat pipeline. The middle section of the rubber column 11 slides through the wrapping sleeve, and the other end of the rubber column cooperates to support the stress input end of the stress monitoring mechanism, so as to transfer the deformation stress of the heat insulation sleeve 13 to the stress monitoring mechanism 1.

[0025] Preferably, the positioning component includes two opposing arc-shaped fixing plates 21 that are spliced ​​and fixed together, and also includes an anti-slip sleeve 22 that covers and is sleeved on the outer periphery of the heat pipeline and the end of the heat insulation sleeve 13; multiple fastening components 3 are arc-shapedly distributed and radially adjusted and inserted on the arc-shaped fixing plate 21, and the fastening components 3 radially abut against the circumferential outer wall of the anti-slip sleeve 22.

[0026] Preferably, both ends of the arc-shaped fixing plate 21 are uniformly provided with wing plates, and the wing plates of two adjacent arc-shaped fixing plates 21 are provided with strip-shaped snap-fit ​​grooves 211 facing away from each other; a concave snap-fit ​​cover 23 with a cross-section of π is slidably fastened on the strip-shaped snap-fit ​​groove 211; strip-shaped snap-fit ​​blocks 232 that are slidably connected in the strip-shaped snap-fit ​​groove 211 are uniformly provided on the inner walls of both sides of the concave snap-fit ​​cover 23, and the maximum distance between the wing plates of the two adjacent arc-shaped fixing plates 21 is constrained by the concave snap-fit ​​cover 23.

[0027] Preferably, the fastening assembly 3 includes a threaded rod 31 and a pressing fixing plate, wherein the threaded rod 31 is threaded through and connected to the arc-shaped fixing plate 21, and one end of the threaded rod 31 rotates circumferentially and is axially limited and connected to the pressing fixing plate; an anti-slip groove 33 is integrally formed on one side surface of the pressing fixing plate, and the side surface of the pressing fixing plate with the anti-slip groove 33 is provided with an adjustable constraint force by the threaded rod 31 to abut against the circumferential outer wall of the anti-slip sleeve 22.

[0028] Preferably, the top and bottom of the concave snap-fit ​​cover 23 are both connected with multiple safety bolts, which are radially inserted into the circumferential outer wall of the arc-shaped fixing plate 21 and threadedly connected to the arc-shaped fixing plate 21.

[0029] In addition, in preferred embodiment of this utility model, both the stress monitoring mechanism 1 and the rubber column 11 are mature products in the prior art. The connection method between the stress monitoring input end of the stress monitoring mechanism 1 and the rubber column 11 adopts mature technical means in the prior art. The other end of the rubber column 11 can be fixed or movable and abutted against the circumferential outer wall of the heat insulation sleeve 13 to detect the deformation stress of the heat insulation sleeve 13.

[0030] To more clearly illustrate the specific implementation of this utility model, an embodiment is provided below:

[0031] This utility model discloses a high-temperature stress monitoring device suitable for long-distance heat transmission pipelines, comprising a stress monitoring mechanism 1, and further comprising:

[0032] The positioning and fixing component 2 consists of four arc-shaped fixing plates 21 set at both ends of the rubber column 11. The four arc-shaped fixing plates 21 are arranged in pairs and symmetrically arranged at the center of the stress monitoring mechanism 1. Anti-slip sleeves 22 are provided between two adjacent arc-shaped fixing plates 21. The diameter of the anti-slip sleeves 22 is smaller than the diameter of the arc-shaped fixing plates 21.

[0033] Furthermore, both ends of the two adjacent arc-shaped fixing plates 21 are provided with strip-shaped snap-fit ​​grooves 211, and both ends of the two adjacent arc-shaped fixing plates 21 are provided with concave snap-fit ​​covers 23.

[0034] The beneficial effects of adopting the above-mentioned further solution are as follows: the adjacent arc-shaped fixing plates 21 form a sliding locking structure with the concave locking cover 23 through the strip-shaped locking groove 211. During installation, the strip-shaped locking block 232 is quickly positioned along the locking groove. The arc surface design of the concave cover fits the pipeline contour, increasing the contact area. At the same time, the locking structure transforms the discrete force of the adjacent fixing plates into an overall circumferential constraint force, improving the structural rigidity of the fixing component. This design not only simplifies the disassembly and assembly process and shortens the on-site installation time, but also allows for a small amount of sliding displacement between the fixing plates when the pipeline undergoes radial deformation due to thermal expansion and contraction through an adjustable elastic locking mechanism. This avoids stress concentration leading to device cracking or detachment, ensuring the stability and reliability of long-term fixing in high-temperature environments.

[0035] Furthermore, a strip-shaped locking block 232 is provided on the concave locking cover 23, and the concave locking cover 23 is slidably locked with the strip-shaped locking groove 211 through the strip-shaped locking block 232. A mounting bolt 231 that is threadedly connected to the arc-shaped fixing plate 21 is provided through the concave locking cover 23.

[0036] The beneficial effects of adopting the above-mentioned further solution are as follows: The concave snap-fit ​​cover 23 forms a sliding guide structure with the strip snap-fit ​​groove 211 of the arc-shaped fixing plate 21 through the strip snap-fit ​​block 232. During installation, it can be quickly aligned and positioned along the groove, reducing installation errors. The mounting bolt 231 passes through the snap-fit ​​cover and is threadedly connected to the fixing plate. After tightening, the snap-fit ​​position can be locked. The combination design of sliding snap-fit ​​and threaded locking not only ensures the disassembly of the fixing components and facilitates later maintenance and replacement, but also improves the device's resistance to deformation and installation adaptability in high-temperature environments through the dual mechanism of mechanical limiting and elastic adjustment.

[0037] Furthermore, fastening components 3 are provided on both arc-shaped fixing plates 21, and the two fastening components 3 are symmetrical to each other with concave snap-fit ​​covers 23.

[0038] The beneficial effects of adopting the above-mentioned further solution are as follows: The symmetrically arranged fastening components 3 achieve uniform, ring-shaped fastening of the pipeline through the synergistic action of mechanical force. The lower fastening plates 32 of each set of fastening components 3 are distributed in an arc shape, forming multi-point contact with the curved surface of the pipeline. The lower fastening plates 32 are driven to move radially by the rotation of the threaded rod 31, pressing the anti-slip groove 33 against the outer wall of the pipeline. The increased contact surface friction enhances the fixing stability. The symmetrical structure balances the fastening forces on both sides, avoiding device tilting or local damage to the pipeline caused by unilateral force. In high-temperature environments, when the pipeline expands or contracts radially, the symmetrical fastening components 3 can adjust the pressure synchronously. The thread gap of the threaded rod 31 allows for slight elastic deformation, maintaining the fastening force while avoiding stress concentration. This ensures that the monitoring device is always in close contact with the pipeline in dynamic deformation scenarios, improving the reliability and environmental adaptability of long-term monitoring.

[0039] Furthermore, the fastening assembly 3 is composed of three pressing fastening plates 32 disposed on the arc-shaped fixing plate 21. The three pressing fastening plates 32 are arranged in an arc shape, and the included angle between two adjacent pressing fastening plates 32 is equal.

[0040] The beneficial effects of adopting the above-mentioned further scheme are as follows: Three arc-shaped downward clamping plates 32 are evenly arranged at a 120° angle to form an equilateral triangular clamping array, which can apply symmetrical circumferential clamping force to the pipeline, avoiding local stress concentration caused by single-point force. The arc-shaped plates fit the curved surface of the pipeline, increasing the contact area, while the anti-slip grooves 33 enhance the friction coefficient with the pipe wall, improving the fixation reliability. The evenly distributed structural design allows the clamping force to be evenly transmitted along the circumferential direction. Even if the pipeline undergoes elliptical deformation due to high temperature, it can still maintain stable clamping through the cooperative contact of multiple plates. When the pipeline expands and contracts with heat, the equidistant angle between the three plates allows each plate to simultaneously adjust its radial position. The elastic deformation absorbs displacement stress, preventing damage to the device or pipeline anti-corrosion layer caused by hard extrusion, realizing dynamic adaptive clamping in high-temperature environments, and ensuring the long-term accuracy of stress monitoring.

[0041] Furthermore, each end of the pressing fastening plate 32 near the anti-slip sleeve 22 is provided with an anti-slip groove 33. The pressing fastening plate 32 and the anti-slip sleeve 22 are in contact with each other. A threaded rod 31 that penetrates the arc-shaped fixing plate 21 is rotatably connected to the pressing fastening plate 32. The threaded rod 31 and the arc-shaped fixing plate 21 are threadedly connected.

[0042] The beneficial effects of adopting the above-mentioned further solution are as follows: The downward fastening plate 32 achieves radial displacement adjustment through the threaded transmission of the threaded rod 31. When the threaded rod 31 is rotated, the plate moves closer to or away from the pipeline along the guide structure of the arc-shaped fixing plate 21. After the anti-slip groove 33 contacts the anti-slip sleeve 22, a double anti-slip structure is formed: the groove increases the roughness of the contact surface, and the surface texture of the sleeve enhances the friction through the elastic extrusion of the flexible material. The dual effect ensures that the device does not slip under pipeline vibration or thermal displacement scenarios. The thread self-locking characteristic of the threaded rod 31 can lock the fastening force and avoid loosening caused by material thermal expansion under high temperature environment. The contact design makes the fastening plate and the sleeve form a force transmission chain, converting the axial force of the threaded rod 31 into a circumferential clamping force, which is evenly applied to the outer wall of the pipeline. This not only improves the fixing stability, but also reduces the damage to the pipeline anti-corrosion layer through flexible contact. It is suitable for long-term reliable fixing under high pressure and high temperature environment and ensures the accuracy of stress monitoring data.

[0043] Furthermore, a wrapping sleeve 12 is provided below the stress monitoring mechanism 1, a rubber column 11 is provided between the stress monitoring mechanism 1 and the wrapping sleeve 12, a heat insulation sleeve 13 is provided inside the wrapping sleeve 12, and the input end of the stress monitoring mechanism 1 is connected to two arc-shaped fixing plates 21 respectively.

[0044] The beneficial effects of adopting the above-mentioned further scheme are as follows: The stress monitoring mechanism 1 is elastically connected to the sleeve 12 through the rubber column 11. The high elasticity of the rubber absorbs the displacement stress caused by pipeline vibration and thermal expansion and contraction, avoiding sensor damage caused by rigid connection. The heat insulation sleeve 13 inside the sleeve 12 is made of high temperature resistant heat insulation material, which can block the transmission of high temperature from the pipeline to the monitoring mechanism and maintain the internal sensing element within the safe operating temperature range. The input end of the monitoring mechanism is connected to the arc-shaped fixing plate 21, so that the micro displacement of the fixing plate caused by pipeline deformation is directly transmitted to the sensing element. Accurate monitoring is achieved through the elastic deformation-stress conversion mechanism. This structure, through the triple design of "elastic buffer + thermal isolation + displacement transmission", not only ensures the physical stability of the monitoring device in high temperature environment, but also ensures the real-time accurate acquisition of stress signal, and is suitable for long-term reliable monitoring under extreme working conditions of long-distance heat pipeline.

[0045] Finally, any aspects of this utility model not fully described herein utilize existing mature products and technologies.

[0046] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited to this. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the inventive spirit of the present invention, such designs should fall within the protection scope of the present invention.

Claims

1. A high-temperature stress monitoring device suitable for long-distance heat pipelines, comprising a stress monitoring mechanism, characterized in that, Also includes: The system includes a positioning and fixing component, a heat insulation sleeve, and a wrapping sleeve. The heat insulation sleeve is fitted over the outer wall of the stress monitoring section of the thermal pipeline. The outer surface of the heat insulation sleeve is fixedly covered by the wrapping sleeve. Multiple rubber pillars are radially fixed on the circumferential outer wall of the heat insulation sleeve, and the axial ends of the heat insulation sleeve are radially clamped and positioned by the positioning and fixing component fitted over the thermal pipeline. The middle section of each rubber pillar slides through the wrapping sleeve, and the other end of each rubber pillar cooperates with the stress input end of the stress monitoring mechanism to transfer the deformation stress of the heat insulation sleeve to the stress monitoring mechanism.

2. The high-temperature stress monitoring device suitable for long-distance heat transmission pipelines according to claim 1, characterized in that: The positioning and fixing assembly includes two opposing arc-shaped fixing plates that are spliced ​​and fixed together, and also includes an anti-slip sleeve that covers and sleeves the outer periphery of the heat pipeline and the end of the heat insulation sleeve; multiple fastening components are arc-shapedly distributed and radially adjusted and inserted on the arc-shaped fixing plates, and the fastening components radially abut against the circumferential outer wall of the anti-slip sleeve.

3. The high-temperature stress monitoring device suitable for long-distance heat transmission pipelines according to claim 2, characterized in that: Both ends of the arc-shaped fixing plate are uniformly provided with wing plates, and strip-shaped snap-fit ​​grooves are opened on the wing plates of two adjacent arc-shaped fixing plates facing away from each other; a concave snap-fit ​​cover with a π-shaped cross section is slidably fastened on the strip-shaped snap-fit ​​groove; strip-shaped snap-fit ​​blocks that slide and connect in the strip-shaped snap-fit ​​groove are uniformly provided on the inner walls of both sides of the concave snap-fit ​​cover, and the maximum distance between the wing plates of two adjacent arc-shaped fixing plates is constrained by the concave snap-fit ​​cover.

4. A high-temperature stress monitoring device suitable for long-distance heat transmission pipelines according to claim 2, characterized in that: The fastening assembly includes a threaded rod and a pressing fixing plate, wherein the threaded rod is threaded through and connected to the arc-shaped fixing plate, and one end of the threaded rod rotates circumferentially and is axially limited and connected to the pressing fixing plate; an anti-slip groove is integrally formed on one side surface of the pressing fixing plate, and the side surface of the pressing fixing plate with the anti-slip groove is provided with an adjustable constraint force by the threaded rod to abut against the circumferential outer wall of the anti-slip sleeve.

5. A high-temperature stress monitoring device suitable for long-distance heat transmission pipelines according to claim 3, characterized in that: The top and bottom of the concave snap-fit ​​cover are each connected with multiple safety bolts, which are radially inserted into the circumferential outer wall of the arc-shaped fixing plate and threadedly connected to the arc-shaped fixing plate.

Images