162 results about "Pipe insulation" patented technology

The invention relates to the technical field of heat preservation and energy conservation, and particularly discloses a system for testing the heat conductivity coefficient of a pipeline heat preservation material under an engineering meteorological environment condition, which comprises a straight pipe test piece with calibration ends fixedly mounted at two ends, and a heat preservation covering material wrapped on the outer wall of the straight pipe test piece to form a pipe fitting to be tested; the ventilation hood is positioned in the sealed space; air pipes at the output end of the air conditioning system are all located in the sealed space, and air outlets of the air conditioning system directly face the ventilation hood. By simulating multi-parameter coupling working conditions such as in-pipe medium temperature gradient, external temperature and humidity / wind speed circulation and mechanical vibration, the heat conductivity coefficient of the material is dynamically corrected, whether the heat conductivity performance of each layer of material meets the standard specification or not is verified, and the rationality of the composite structure is quantitatively evaluated based on a thermal resistance network model. Data support is provided for optimizing the heat preservation layer combination mode and thickness design, and the problem of design deviation caused by the fact that a traditional method cannot reflect actual engineering working conditions is solved.

The invention discloses a heat distribution pipeline heat preservation and energy saving device, and relates to the technical field of pipeline heat preservation, in particular to a heat distribution pipeline heat preservation and energy saving device which comprises a heat distribution pipeline and an outer pipe wrapping the heat distribution pipeline, and a rubber pipe capable of deforming is arranged between the heat distribution pipeline and the outer pipe. Through the thermal expansion and cold contraction characteristics of inert gas filled in the extrusion cavity and the arrangement that the first heat preservation cabin is communicated through the first communication opening, when the external environment temperature distribution is uneven, the inert gas in the extrusion cavity of the perpendicular incidence face expands to push the rubber pipe to deform; carbon dioxide in a first heat preservation cabin in a compressed area is transferred to the shady side through a first communication opening, a heat preservation gas layer on the shady side is promoted to expand and thicken, and meanwhile a main movable plate is driven to rotate around a limiting column so that the whole heat preservation structure can deviate. The purposes of dynamically adjusting the thickness of the heat-preservation air layer according to the environment temperature difference, strengthening the heat-preservation effect of the shady face and reducing heat loss are achieved.

The utility model discloses a split type pipeline heat preservation module with an aerogel heat insulation layer, which relates to the field of pipeline heat preservation equipment, and adopts the technical scheme that the split type pipeline heat preservation module comprises a sleeve body, and a plurality of groups of arc-shaped pipe pieces which are sequentially and rotatably connected end to end of the sleeve body, the shells of every two adjacent pipe pieces are rotationally connected through a hinge structure. An elastic buffer layer, a reflective aluminum foil layer and an aerogel heat insulation layer are sequentially arranged on the inner wall of the shell of each group of duct pieces, and the elastic buffer layer is bonded and fixed with the inner wall of the shell; a plurality of hasps are fixedly arranged on the shell located at one end, a plurality of connecting rings are arranged on the shell located at the other end, and when the sleeve body is arranged on the outer side of a pipeline in a sleeving mode, the hasps are fixedly connected with the connecting rings. The utility model has the beneficial effects that the modular detachable design is adopted, so that the mounting and the dismounting are convenient and fast, and the thermal insulation performance and the construction efficiency of the pipeline joint coating are obviously improved.

The utility model relates to the technical field of heat insulation of heat distribution pipelines, in particular to a heat insulation device of a corrugated pipe compensator of an annealing furnace, which comprises a casing and a corrugated pipe positioned in the casing, a first fixing pipe is fixed at one end of the corrugated pipe, a second fixing pipe is fixed at the other end of the corrugated pipe, and first glass wool is arranged between the corrugated pipe and the inner wall of the casing. A length-adjustable support is arranged between the first fixing pipe and the second fixing pipe and supports the side, close to the corrugated pipe, of the first glass wool, port connecting pipes are fixed to the ends, away from each other, of the first fixing pipe and the second fixing pipe, extending holes are formed in the two ends of the shell, and the port connecting pipes extend out of the extending holes. The periphery of the port connecting pipe is sleeved with a sleeve, second glass wool is fixed between the inner wall of the sleeve and the outer wall of the port connecting pipe, and a baffle is fixed to the outer wall of the end, inserted into the shell, of the sleeve. The corrugated expansion joint has the technical effects that the corrugated expansion joint is subjected to heat preservation, and the service life of the corrugated expansion joint is prolonged.

This utility model relates to an insulation structure for overhead steam pipelines, comprising, from the inside out, a first insulation layer, a second insulation layer, a third insulation layer, a fourth reflective layer, a fifth insulation layer, a first top layer, a second top layer, and a protective layer arranged sequentially outside the overhead steam pipeline. First reflective layers are respectively disposed between the first and second insulation layers and between the second and third insulation layers; second reflective layers are respectively disposed between the third and fourth insulation layers and between the fourth and fifth insulation layers; and a third reflective layer is disposed between the second top layer and the protective layer. This utility model, by sequentially setting five insulation layers and coordinating the first and second reflective layers between them, can achieve insulation of the overhead steam pipeline, reducing energy loss and energy consumption. The first top layer, second top layer, and protective layer protect the overhead steam pipeline, the insulation layers, and the reflective layers, improving the overall structural stability and service life.

The utility model discloses a heat supply pipeline heat preservation airtightness detection device, the utility model discloses a first arc plate and second arc plate are connected with each other through a plurality of connecting components, connecting component includes connecting plate no.

The utility model relates to the technical field of heat preservation structures, and provides a novel pipeline heat preservation structure which is used for being arranged beside a part to be subjected to heat preservation and comprises a supporting piece, an outer side heat preservation pipe and a middle heat preservation pipe, the outer side heat preservation pipe and the middle heat preservation pipe are both arranged on the supporting piece, the outer side heat preservation pipe is provided with an inlet, and the middle heat preservation pipe is provided with an outlet. The outer side heat preservation pipe is arranged in the edge direction of the part to be subjected to heat preservation in a surrounding mode, the middle heat preservation pipe is located in the middle of the part to be subjected to heat preservation, and the outer side heat preservation pipe communicates with the middle heat preservation pipe and is used for enabling heat preservation media to flow from the outer side heat preservation pipe to the middle heat preservation pipe. Through the technical scheme, the problems that in the prior art, temperature difference exists between the middle and the periphery of a spinneret plate, and the temperature of all positions of the spinneret plate is not easy to be uniform in a traditional heat preservation mode are solved.

The utility model discloses a novel drainage pipeline heat preservation device which comprises a mother pipe and a drainage pipe connected with the mother pipe, mother pipe side heat preservation cotton and a mother pipe side protection shell are sequentially arranged on the outer side of the mother pipe from inside to outside, and drainage pipe side heat preservation cotton and a drainage pipe side protection shell are sequentially arranged on the outer side of the drainage pipe from inside to outside. When the drain pipe is communicated with the mother pipe, the drain pipe side heat preservation cotton can be inserted into the mother pipe side heat preservation cotton, the sealing position of the drain pipe and the mother pipe is coated with the connection position heat preservation cotton and the connection position protection shell, and the connection position protection shell is connected with the drain pipe side protection shell and the mother pipe side protection shell through fasteners. After the technical scheme is adopted, the heat insulation device for the drain pipeline can reduce the heat loss of the pipeline, prolong the service life of the drain pipeline and save the use cost.

The invention discloses a heat-preservation heat tracing pipeline installation method. The invention belongs to the technical field of pipeline heat preservation and heat tracing, and particularly relates to a heat preservation and heat tracing structure mounting method for a high-temperature pipeline of a sulfur recovery device, which comprises the following steps of: pretreating the surface of the pipeline, welding a supporting piece group, mounting a heat tracing system, coating a galvanized welded wire mesh, mounting a heat preservation layer, and finally assembling an outer protective layer. A unique'heating space 'is formed according to the steps, so that the inner wall of the thermal insulation layer is separated from the high-temperature process pipeline and the outer wall of the heat tracing pipe by a relatively static air layer, the heat loss is effectively reduced, and the heat tracing efficiency is improved; and natural convection of air in the heating space can also enable the circumferential temperature of the pipeline to be more uniform, so that the energy-saving effect is improved.

The present utility model relates to the technical field of pipeline insulation. Disclosed is a cryogenic pipeline insulation structure, comprising an insulation layer, wherein a protective layer is fixedly connected to one side of the insulation layer, a sealing layer is fixedly connected to one side of the protective layer, a wire storage block is fixedly connected to one end of a side surface of the sealing layer, a connecting strap is arranged inside the wire storage block, a loop side of a hook-and-loop fastener is fixedly connected to the bottom of the connecting strap, a connecting block is fixedly connected to the other end of the side surface of the sealing layer, and a hook side of the hook-and-loop fastener is connected to the top of the connecting strap. In the cryogenic pipeline insulation structure, the insulation layer made of polyurethane can provide thermal insulation around the cryogenic pipeline, has good resilience and thermal insulation properties, and can be better installed onto the cryogenic pipeline to closely fit the surface thereof; moreover, the protective layer can further improve the thermal insulation efficiency while protecting the insulation layer; besides, the hook‑and‑loop fastener provided on the surface of the sealing layer and a protective shell sleeved outside the sealing layer further facilitate installation of the insulation structure.

The utility model discloses a pipeline thermal insulation skin laying device for heating and ventilation engineering, which belongs to the technical field of heating and ventilation construction and structurally comprises a lifting frame, a bottom connecting frame and a top connecting frame. The lifting frame is fixedly installed on the lower side of the bottom connecting frame, and the bottom connecting frame is connected with the top connecting frame through the two flexible butt joint assemblies. Stretching arms are rotationally installed at the end of the bottom connecting frame and the end of the top connecting frame respectively, bending edges are arranged on the upper side and the lower side of the protective outer skin respectively, and the bending edges on the two sides are connected with the two stretching arms respectively; by means of the device, the pipeline heat preservation skin can be lifted to a high position from the ground, heat preservation skin laying operation is conducted on the pipeline at the high position, constructors do not need to climb or use a ladder to conduct high-altitude operation, the safety risk of construction is reduced, and the laying efficiency of the heat preservation skin is improved.

To provide a pipeline heating and valve-controlled exhaust system in which the valve control mechanism not only enhances the overall airflow control capability but also extends the cleaning cycle and maintenance interval, thereby reducing the risk of equipment downtime. [Solution] The front connection module 110 includes a front insulation space and a heating guide element 114 that heats the front insulation space; the elbow guide module 120 includes an elbow insulation space communicating with the front insulation space and a pressure detection unit 124 that detects the gas pressure in the elbow insulation space; the exhaust control module 130 includes a flow path opening 132 communicating with the elbow insulation space and a flow path valve element 134, the flow path valve element 134 shields a part of the flow path opening 132 to define an unshielded area, and when the pressure detection unit 124 detects a change in gas pressure, the flow path valve element 134 moves to adjust the unshielded area of ​​the flow path opening 132.

The invention discloses a thermal pipeline leakage monitoring method and system based on digital twinning, and relates to the technical field of data processing, and the method comprises the steps: collecting pipe wall temperature time sequence data through a distributed temperature sensing array pre-buried in a pipeline thermal insulation layer; constructing a virtual thermodynamic resonant cavity model in the digital twin, and generating a theoretical thermal oscillation reference frequency in a leakage-free state based on pipeline physical attributes and medium flow parameters; performing spectrum analysis on the pipe wall temperature time sequence data, extracting an abnormal frequency shift characteristic of an actual thermal oscillation spectrum relative to a theoretical thermal oscillation reference frequency, and when the intensity of the abnormal frequency shift characteristic continuously exceeds a first preset threshold value, outputting a primary leakage early warning signal and a corresponding first leakage position; and calling a whole life cycle temperature history record of the associated pipe section of the first leakage position, combining the accumulated thermal stress value, and if the accumulated thermal stress value exceeds a material fatigue threshold value and the strength of the abnormal frequency shift characteristic exceeds a second preset threshold value, judging that the leakage is structural damage leakage.

The utility model discloses a heat distribution pipeline heat preservation energy-saving device which comprises a heat preservation pipeline and a conveying pipeline, the heat preservation pipeline is composed of an outer pipe and an inner pipe, the inner side of the inner pipe is fixedly connected with a supporting rod, and the end, close to the conveying pipeline, of the supporting rod is fixedly connected with a rubber pad; a vacuum layer and fixing rings are arranged between the outer pipes and the inner pipes, the vacuum layer is located between the fixing rings on the two sides and fixedly connected with a supporting ring, connecting grooves are formed in the ends, close to each other, of the outer pipes on the two sides, limiting grooves are formed in the connecting grooves, connecting rings are arranged on the connecting grooves, and limiting strips are arranged in the connecting rings. The limiting strips are located in the limiting grooves, and sealing gaskets are fixedly connected to the inner rings, close to the limiting grooves, of the limiting strips. Through the structure, the problems of poor heat preservation effect and poor protection capability are solved.

The invention relates to the technical field of vehicle exhaust pipeline heat preservation, and particularly discloses a pipeline heat preservation structure, an exhaust system and a vehicle. The heat insulation layer comprises a framework, aerogel and nano zirconium oxide gel, the aerogel is embedded into the framework, the heat conductivity coefficient of the heat insulation layer ranges from 0.025 W / (m.K) to 0.03 W / (m.K), the heat preservation effect is effectively improved, meanwhile, the nano zirconium oxide gel is embedded into the framework, the problem of thermal shock pulverization is effectively solved, and the service life of the heat insulation layer is effectively prolonged; and moreover, through the gradient design of the outer protective layer, the heat insulation layer and the inner flow guide layer which are sequentially arranged, and the outer protective layer and the inner flow guide layer are both made of metal materials, collaborative optimization of corrosion prevention, heat preservation and fluid dynamics of the exhaust system is achieved, and the comprehensive performance of the pipeline heat preservation structure is effectively improved. The problems that in the prior art, a pipeline heat preservation structure can cause collapse of a ceramic fiber felt structure under long-term high-temperature vibration, and the heat preservation performance is degraded are effectively solved.

The application relates to the technical field of pipeline heat preservation, and discloses a quick dismounting type pipeline heat preservation clothing, which comprises a heating pipeline, and a heat preservation assembly is arranged on the outer side of the heating pipeline; the heat preservation assembly comprises a heat preservation clothing body, the heat preservation clothing body is composed of an outer layer sleeve and an inner layer sleeve, and an air-filled interlayer is reserved between the outer layer sleeve and the inner layer sleeve; a double anti-convection structure of physical separation and solid-state heat insulation medium suspension is formed through the air-filled interlayers of the units and aerogel powder in the air-filled interlayers; air transverse and longitudinal flow is blocked from the source; the inner layer is uniformly extruded from an initial state of being attached to the outer layer by air filling of an air pump; a zero-gap wrinkle-attached structure is formed by closely covering the outer wall of the pipeline; the convection gap between the pipeline and the heat preservation layer is completely eliminated; the sealing stability of the connecting part in the special-shaped pipeline scene is ensured; finally, the high-efficiency heat preservation system without the convection gap and suitable for the special-shaped pipeline is constructed through the cooperation of the anti-convection independent air chamber, the special-shaped structure of the high-elastic material and the like; and the heat conduction loss is reduced.

The invention discloses a heat preservation layer and electric heat tracing configuration method for industrial equipment and pipelines, belongs to the technical field of heat preservation and heating of the industrial equipment and the pipelines, and can solve the problem that an existing configuration method does not comprehensively consider a heat preservation layer and an electric heat tracing system, so that the configuration reasonability is poor. The method comprises the following steps: S1, determining operation parameters of industrial equipment and a pipeline, environmental parameters of an environment where the industrial equipment and the pipeline are located, and material parameters of a thermal insulation layer; s2, determining the design thickness of the thermal insulation layer and the design power of the electric heat tracing system when the temperature of the outer surface of the thermal insulation layer reaches a plurality of different preset temperatures according to the operation parameters, the environment parameters and the material parameters; the design thickness and the design power corresponding to each preset temperature form a group of configuration schemes; and S3, determining the construction cost and the operation maintenance cost corresponding to each group of configuration schemes, and determining the optimal configuration scheme from the plurality of groups of configuration schemes according to the construction cost and the operation maintenance cost. The invention is used for configuring the thermal insulation layer and the electric heat tracing.

The invention discloses a steam pipe network thermal insulation layer optimization calculation method, which comprises a parameter acquisition module, a pipeline operation calculation module and a thermal insulation layer optimization module. The parameter acquisition module is responsible for deploying a sensor at the starting end of a target pipeline so as to acquire parameters such as pressure, temperature and flow of a pipeline inlet, and the measured parameters and related design parameters of the target pipeline serve as input values of an optimization calculation method; the pipeline operation calculation module is used for calculating operation parameters of a target pipeline, performing thermal-hydraulic coupling calculation by combining the input values with related design parameters of the target pipeline to obtain the operation parameters of the pipeline, and providing a basis for setting a thermal insulation layer; and the thermal layer optimization module is used for performing optimization calculation on the thermal insulation layer of the target pipeline, and performing optimization calculation on the thermal insulation layer through the operating parameters obtained by the steam thermal power-hydraulic power coupling calculation model by iterating the thickness of the thermal insulation layer based on the life cycle model of the steam pipe network. By means of the method, the heat preservation structure can be optimized according to needs. The thermal insulation material and the thermal insulation structure are adjusted according to different steam heat supply network application scenes, accurate optimization is achieved, thermal insulation material loss and pipeline investment cost are reduced, and the energy utilization rate is effectively increased.

The utility model discloses a full-automatic polyurethane foaming machine for pipeline heat preservation production, and particularly relates to the technical field of polyurethane foaming machines, the full-automatic polyurethane foaming machine comprises a heat preservation storage tank, a cleaning mechanism for cleaning the interior of the heat preservation storage tank is arranged on one side of the heat preservation storage tank, and feeding pipes are fixedly communicated with the two sides of the top of the heat preservation storage tank; the cleaning mechanism comprises a water tank arranged on one side of the heat preservation storage tank, a water pump is fixedly arranged at the top of the water tank, a water inlet of the water pump is fixedly communicated with a water inlet pipe, the bottom end of the water inlet pipe extends into the water tank, a water outlet of the water pump is fixedly communicated with a water outlet pipe, and one end of the water outlet pipe extends into the heat preservation storage tank. According to the device, the interior of the heat preservation storage tank can be cleaned through the cleaning mechanism, the cleanliness of the interior of the heat preservation storage tank is guaranteed, a large amount of manpower is saved, impurities in polyurethane mixed liquid can be filtered through the filtering mechanism, and the situation that the foaming ejector is blocked by the impurities, and the foaming efficiency is affected is avoided.

The utility model belongs to the technical field of water supply and drainage, and particularly relates to an anti-freezing device for building water supply and drainage, which comprises an anti-freezing heating box, a water outlet pipe is mounted above one side of the anti-freezing heating box, a water inlet pipe is mounted below one side of the anti-freezing heating box, and mounting plates are mounted in the water outlet pipe and the water inlet pipe. A U-shaped electric heating pipe is mounted on one side of the mounting plate, and a box cover is arranged on the top of the anti-freezing heating box. Water enters the anti-freezing heating box through a water inlet pipe, the water is heated through a first spiral electric heating pipe and a second spiral electric heating pipe, hot water is output through a water outlet pipe, accordingly, water freezing and solidification are avoided, the anti-freezing effect is improved, the interior of a pipeline is heated through a U-shaped electric heating pipe, and the anti-freezing effect is improved. The water inlet pipe and the water outlet pipe are prevented from being frozen to cause blockage, the anti-freezing effect is improved, and detachable pipeline heat preservation sleeves are arranged on the surfaces of the water inlet pipe and the water outlet pipe to protect the water inlet pipe and the water outlet pipe.

The utility model discloses an assembly type pipeline heat preservation structure which comprises a pipeline block, the outer side of the pipeline block is movably connected with a heat preservation layer, the outer side of the heat preservation layer is movably connected with a first protection shell and a second protection shell, and the first protection shell and the second protection shell are attached together. Protection structures are arranged on the outer side of the first protection shell and the outer side of the second protection shell, fixing structures are arranged on the outer sides of the protection structures, the protection structures comprise first arc-shaped blocks, the first arc-shaped blocks are fixedly connected to the outer side of the first protection shell, and second arc-shaped blocks are fixedly connected to the outer side of the second protection shell. Compared with the prior art, due to the arrangement of the first protective shell, the second protective shell, the protective structure and the fixing structure, when the thermal insulation layer is damaged and the protective structure needs to be detached for replacement, workers can replace the thermal insulation layer without tools, the workload of the workers is reduced, time and labor are saved, and convenience and rapidness are achieved.

The utility model belongs to the technical field of pipeline heat preservation, and relates to a detachable heat preservation sleeve capable of eliminating installation gaps, which comprises a heat preservation sleeve body which is of a plane structure in a normal state, and the heat preservation sleeve body is made of composite materials and comprises a glass fiber blanket buffer layer, a mesoporous heat insulation felt layer and an aluminum foil reflecting layer which are sequentially connected from inside to outside. A first fixing strip and a second fixing strip are arranged at the left end and the right end of the heat preservation sleeve body respectively, are made of hard materials and are arranged on the upper surfaces of the left end and the right end of the heat preservation sleeve body respectively. The heat preservation sleeve body is detachably connected together through the first fixing strip and the second fixing strip to form a hollow cylinder matched with a pipeline, waterproof strips are arranged at the joint of the left end and the right end of the heat preservation sleeve body, and gap filling strips are further arranged between the joint of the left end and the right end of the heat preservation sleeve body and the pipeline. The device has the advantages of being simple in structure, stable, reliable, convenient and effective, improving heat preservation performance, saving cost and the like.

The present application relates to a kind of high temperature heat supply pipeline insulation coating, it includes high temperature resistant layer, transition buffer layer and waterproof function layer sequentially arranged in the surface of pipeline from inside to outside;Wherein, the high temperature resistant layer is uniformly coated by the high temperature resistant aerogel insulation coating with dry film thickness of 2~4mm, the transition buffer layer is uniformly coated by the normal temperature aerogel insulation coating with dry film thickness of 3~5mm, the waterproof function layer is uniformly coated by the polymer cement waterproof coating with dry film thickness of 0.1~0.3mm.The present application can be firmly attached to the surface of high temperature heat supply pipeline and its valve etc metal matrix by unique gradient composite structure design, significantly improve its long-term insulation performance and protection reliability under high temperature, high humidity and cold and hot cycle conditions, while having excellent construction adaptability.

The invention discloses multi-terrain intelligent pipeline heat preservation joint equipment, and relates to the technical field of pipeline heat preservation joint coating. Comprising a movable installation part, a sinking safety part is installed on the movable installation part, and the sinking safety part is used for preventing a pipeline from being damaged due to sinking; a lifting adjusting piece is mounted on the movable mounting piece; a connector piece is arranged above the movable mounting piece; the joint piece is used for filling a foaming agent; the joint piece is used for preventing pressure relief; a butt joint filling piece is installed on the connector piece. The butt joint filling part is used for filling a foaming agent when the connector part is in a closed state; the butt-joint filling part is matched with the switch control part, so that the standardization of operating and filling the foaming agent by a worker can be automatically controlled, the sealing performance when the joint surrounding pipe is jointed can be ensured, and filling of the foaming agent in a sealing state is ensured; the problem that an existing pipeline heat preservation connector device cannot conveniently limit workers to ensure the sealing performance of a connector during foaming filling is solved.

The present invention relates to the field of thermal insulation and energy-saving technology, and specifically discloses a thermal conductivity test system for pipeline insulation materials under engineering meteorological environment conditions, comprising: a straight pipe test piece with calibration ends fixedly installed at both ends, the outer wall of which is wrapped with thermal insulation covering material to form a pipe to be tested; a ventilation hood in a sealed space; an air conditioning system, the air ducts at its output end are all located in the sealed space, and the air outlet is facing the ventilation hood. This invention dynamically corrects the thermal conductivity of the material by simulating multi-parameter coupling conditions such as the temperature gradient of the medium in the pipe, the external temperature and humidity / wind speed cycle, and mechanical vibration, verifies whether the thermal conductivity of each layer of material meets the standard specifications, and quantitatively evaluates the rationality of the composite structure based on the thermal resistance network model, providing data support for optimizing the combination of insulation materials and thickness design, and solving the design deviation problem caused by the inability of traditional methods to reflect the actual working conditions of the project.

The utility model discloses a joint coating device for a polyethylene polyurethane prefabricated directly-buried thermal insulation pipe joint, which belongs to the technical field of pipeline thermal insulation joint coating and comprises a protective shell for thermal insulation, four fixing blocks are symmetrically mounted on the periphery of the protective shell, threaded rods are rotatably connected to the side surfaces of the four fixing blocks, and the threaded rods are connected with a threaded rod. A rotating column used for rotating is installed at one end of the threaded rod, a limiting groove is rotatably connected to the other end of the threaded rod, four sets of guide columns are symmetrically and fixedly connected to the inner wall of the protective shell, moving plates are slidably connected to the peripheries of the four sets of guide columns, and two hollow columns are installed on one side of each moving plate; springs are arranged in the two hollow columns, moving columns are connected to the ends, away from the moving plates, of the springs, and arc-shaped locking plates used for fixing polyethylene polyurethane prefabricated directly-buried thermal insulation pipe joints are installed at the ends, away from the springs, of the moving columns. And the joint is not easy to fall off.

The utility model relates to the field of pipeline thermal insulation sleeves, in particular to a quantitative structure for cutting a pipeline thermal insulation sleeve, which comprises a quantitative table, a main body for cutting the pipeline thermal insulation sleeve, a front quantitative plate, a rear quantitative plate, an electric sliding rail and a rear quantitative plate, the left side of the electric sliding rail is movably connected with a first electric sliding sleeve, and a cutting knife support is fixedly installed above the first electric sliding sleeve. The quantitative structure is provided with the quantitative table, the front quantitative plate, the spacing sensor, the electric sliding rail, the scale reference plate, the side moving sliding rail, the telescopic frame and the side spacing scanner. Through the scale reference plate, when the side moving sliding rail and the side moving sliding sleeve drive the telescopic frame to move, accurate reference scales can be achieved, and size control in the cutting process is more accurate.

The utility model discloses a heating and ventilation pipeline thermal insulation layer cutting and laying device which comprises a processing frame and a cutting mechanism, the cutting mechanism is arranged at the top of the processing frame, the processing frame is of a U-shaped structure, a bearing plate is arranged below the cutting mechanism, the bearing plate is horizontally arranged at the top of the processing frame, and guide roller rods are symmetrically and rotationally arranged below the processing frame. According to the thermal insulation layer cutting device, the thermal insulation layer is assisted to penetrate through the processing frame through the guide roller rod, the cutting blade is in contact with the thermal insulation layer, cutting of the thermal insulation layer is achieved, the thermal insulation layers with different lengths can be cut, and the problem that in the prior art, when the thermal insulation layer is cut, the thermal insulation layer cannot be cut easily is solved. The problems that a heat preservation layer needs to be placed on an arc-shaped bottom plate, due to the arrangement of a supporting plate, the length of the heat preservation layer is limited to a certain degree, and the overlong heat preservation layer cannot be cut are solved.

This invention relates to the field of digital design technology for power engineering and industrial pipelines, and particularly to a pipeline insulation design optimization method and system based on the integration of intelligent pipeline PID and E3D. The method generates insulation design results at the intelligent PID end by calling a knowledge base based on process parameters, and binds these results to the pipeline's unique identifier code to generate a data package. This data package is then transmitted to the E3D platform via middleware, where the identifier code is used to accurately match the 3D pipeline model, and the design results are written into the model's custom attributes to establish a mapping relationship. An engineering-grade insulation material library containing material properties and loss algorithms is built within E3D. Finally, the model's geometric parameters and insulation properties are automatically extracted, and the material library algorithm is used to calculate the final material consumption. This invention breaks down the data silos between 2D processes and 3D models, achieving end-to-end automation from insulation selection to engineering quantity calculation, significantly improving calculation accuracy and enabling agile response to design changes.