Zero-leakage vacuum heat pipe array waste heat deep recovery device

Abstract

The invention relates to the technical field of waste heat recovery, and provides a zero-leakage vacuum heat pipe array waste heat deep recovery device which comprises a main body, heating pipelines are arranged in the main body, and the heating pipelines are arranged in series and cover the inner wall of the main body. A water inlet pipeline used for water inlet and a water outlet pipeline used for water outlet are arranged at the two ends of the heating pipeline respectively, a pipeline isolation assembly used for pipeline isolation is arranged between the main body and the heating pipeline, and through arrangement of structures such as inner side isolation and outer side isolation plates, the vacuum jacket inhibits heat convection and conduction through a vacuum environment, so that the heat conduction efficiency is improved. The inner side isolation plate is made of gradient ceramic materials and provided with layer-by-layer decreasing through grooves to achieve layer-by-layer heat preservation, the outer side isolation plate is provided with an equidistant straight groove array to enhance heat radiation recovery, a composite heat barrier is formed, heat loss is remarkably reduced, and the waste heat recovery efficiency is improved. The problems of low heat recovery efficiency and poor temperature control capability in the prior art are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of waste heat recovery, in particular to a zero-leakage vacuum heat pipe arrayed waste heat deep recovery device. BACKGROUND

[0002] The waste heat deep recovery device refers to a special equipment system for efficiently capturing, gradient utilizing and deeply recovering the waste heat (such as flue gas, steam, cooling water, etc.) generated in industrial production through advanced heat recovery technology.

[0003] The existing industrial waste heat recovery device generally has problems of large heat loss, poor sealing performance, low heat recovery efficiency and insufficient monitoring means. The traditional device mostly adopts single-layer pipeline design, and has large heat conduction loss, and lacks effective heat bridge isolation structure, which aggravates the loss problem in the heat transfer process. In terms of sealing, the conventional device mostly relies on a single sealing gasket or welding process, which is prone to leakage problems under high temperature and high pressure environment. The waste heat boiler has significant leakage loss due to sealing failure. In terms of heat recovery efficiency, most devices can only recover high-temperature sensible heat, and the recovery rate of medium and low temperature waste heat and latent heat is low, and local overheating problems are easily caused due to uneven heat flow distribution, which affects the service life of the equipment.

[0004] In addition, the traditional device has significant defects in structural design. The single-layer pipeline cannot effectively isolate the external environment and the internal medium, resulting in direct loss of heat to the environment through the pipe wall, reducing the overall thermal efficiency of the system. The sealing failure problem not only causes energy waste, but also may cause safety accidents, such as high-temperature steam leakage that may burn the operator or cause accelerated equipment corrosion. In terms of heat recovery efficiency, the existing technology ignores the medium and low temperature waste heat: a large amount of 100-250℃ waste heat is directly discharged in industrial production, and the traditional device cannot stably operate in this temperature range due to material limitations. SUMMARY

[0005] The present application provides a zero-leakage vacuum heat pipe arrayed waste heat deep recovery device, which solves the problems of low heat recovery efficiency and poor temperature control ability in the related art.

[0006] The technical scheme of the present application is as follows: a zero-leakage vacuum heat pipe arrayed waste heat deep recovery device, comprising a main body, a heating pipeline is arranged inside the main body, the heating pipeline is arranged in series on the inner wall of the main body, water inlet pipelines and water outlet pipelines are arranged at both ends of the heating pipeline for water inlet and water outlet, a pipeline isolation component is arranged between the main body and the heating pipeline for pipeline isolation, and a separation component is arranged on the inner wall of the main body for separation adjustment.

[0007] As a preferred scheme of the present application, the pipeline isolation assembly is composed of a pipeline isolation plate for heating pipeline protection, an inner side isolation plate for heat storage on both sides of the heating pipeline, and an outer side isolation plate arranged on the outer circumferential surface of the main body.

[0008] As a preferred scheme of the present application, the pipeline isolation plate is arranged on the outer circumferential surface of the heating pipeline, the inner side isolation plate is internally provided with a plurality of hierarchical decreasing through grooves, the hierarchical decreasing through grooves are used for hierarchical heat storage, the outer side isolation plate is provided with a plurality of equidistantly distributed straight grooves, the straight grooves are used for heat storage, the pipeline isolation plate is made of flexible graphite composite material, the inner side isolation plate is made of gradient ceramic material, and the outer side isolation plate is made of weather-resistant steel material.

[0009] As a preferred scheme of the present application, the top of the main body is provided with a top plate for steam leakage isolation, the bottom of the top plate is provided with a plurality of equidistantly distributed steam sensors, the steam sensors are used for steam leakage sensing, the steam sensors adopt fiber Bragg grating technology, real-time monitoring of steam pressure fluctuation is realized, a vacuum pump is used to maintain the negative pressure state of the cavity, and the sound-light alarm is triggered and the water inlet and outlet valves are closed in linkage when steam leakage occurs.

[0010] As a preferred scheme of the present application, the separation assembly is composed of a plurality of isolation sheet plates arranged on the inner wall of the main body, the separation assembly is equidistantly distributed, and the isolation sheet plates are used for separation adjustment of the isolation assembly and the flame.

[0011] As a preferred scheme of the present application, one side of the isolation sheet plate is provided with a rotating block for transmission, the rotating block is fixedly connected with a rotating shaft for angle adjustment of the isolation sheet plate in the inside, the outer circumferential surface of the rotating shaft is provided with two symmetrically arranged worm gears, and the worm gears are used for transmission of the rotating shaft.

[0012] As a preferred scheme of the present application, the inside of the main body is provided with eight circumferentially distributed transmission shafts, the outer circumferential surface of the transmission shaft is provided with worm gears corresponding to the number of the isolation sheet plates, the worm gears are engaged with the worm gears, the worm gears are used to drive the rotation of the worm gears, the bottom of one of the transmission shafts is connected with a coaxially arranged transmission motor through a shaft coupling, and the transmission motor is used for power output of the rotation of the transmission shaft.

[0013] As a preferred embodiment of the present invention, a transmission gear for synchronous transmission is further provided on the outer circumferential surface of the transmission shaft, and an internal gear ring for synchronous transmission of the transmission gear is rotatably mounted inside the main body. A limiting circular frame for limiting the rotation of the internal gear ring is provided at the bottom of the internal gear ring, and auxiliary balls for assisting the rotation of the internal gear ring are provided on the outer circumferential surface of the internal gear ring.

[0014] The working principle and beneficial effects of this invention are as follows: 1. The present invention uses the structure of inner isolation and outer isolation plate to suppress heat convection and conduction in the vacuum jacket through the vacuum environment. The inner isolation plate is made of gradient ceramic material and has layered decreasing through grooves to achieve heat retention layer by layer. The outer isolation plate is set with an array of equidistant straight grooves to enhance heat radiation recovery, forming a composite heat barrier, which significantly reduces heat loss and improves waste heat recovery efficiency.

[0015] 2. This invention utilizes a structure including an isolation plate and a worm gear. The isolation plate is made of a high-temperature resistant alloy and coated with a heat-reflective coating. Angle adjustment is achieved by connecting the worm gear mechanism to the rotating shaft, optimizing the heat flow path. The worm gear and the worm on the transmission shaft form a self-locking engagement to ensure angle stability. In conjunction with the transmission motor, stepless speed adjustment is achieved, avoiding local thermal stress damage and ensuring the temperature control capability of the device. Attached Figure Description

[0016] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0017] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the main body of the present invention; Figure 3 This is a schematic diagram of the overall structure of the management isolation component of the present invention; Figure 4 This is a bottom view of the management isolation component of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of section A in the image; Figure 6 This is a schematic diagram of the overall structure of the heating pipe of the present invention; Figure 7 This is a schematic diagram of the overall structure of the top plate of the present invention; Figure 8 This is a schematic diagram of the overall structure of the separator component of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of section B in the image; Figure 10 This is a schematic diagram of the overall structure of the isolation plate of the present invention; Figure 11This is a schematic diagram of the overall structure of the limiting circular frame of the present invention.

[0018] In the diagram: 1. Pipeline isolation assembly; 11. Main body; 12. Heating pipe; 121. Water inlet pipe; 122. Water outlet pipe; 13. Pipeline isolation plate; 14. Top plate; 141. Steam sensor; 15. Outer isolation plate; 16. Inner isolation plate; 2. Separating component; 22. Drive motor; 221. Drive shaft; 222. Drive gear; 223. Worm; 23. Separating plate; 231. Rotating block; 232. Rotating shaft; 233. Worm wheel; 24. Limiting frame; 241. Internal gear ring; 232. Auxiliary ball bearings. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] Example 1 like Figures 1-11 As shown, a zero-leakage vacuum heat pipe array waste heat deep recovery device includes a main body 11. A heating pipe 12 is arranged inside the main body 11. The heating pipes 12 are arranged in series and cover the inner wall of the main body 11. A water inlet pipe 121 for water inlet and a water outlet pipe 122 for water outlet are respectively arranged at both ends of the heating pipe 12. The device is characterized in that a pipe isolation component 1 for pipe isolation is arranged between the main body 11 and the heating pipe 12, and a separation component 2 for separation and adjustment is arranged on the inner wall of the main body 11.

[0021] Specifically, the main body 11 adopts a vacuum double-layer jacket structure, with the inner wall fully covered by a spiral array heating pipe 12. The two ends of the pipe are connected to the inlet pipe 121 and the outlet pipe 122 respectively to form a closed loop. The pipe isolation component 1 is embedded between the inner wall of the main body 11 and the heating pipe 12 to form a thermal bridge isolation layer. The separation component 2 consists of several isolation plates 23, which are equidistantly distributed in the inner cavity of the main body 11. The angle can be adjusted by rotating the shaft 232 to optimize the heat flow distribution. The entire device achieves efficient and deep recovery of industrial waste heat through the synergistic effect of the vacuum heat pipe array and the separation component 2. At the same time, multiple sealing and monitoring mechanisms ensure the normal operation of the equipment.

[0022] Specifically, the pipeline isolation assembly 1 is composed of a pipeline isolation plate 13 for protecting the heating pipe 12, an inner side isolation plate 16 for heat storage on both sides of the heating pipe 12, and an outer side isolation plate 15 arranged on the outer periphery of the main body 11.

[0023] Specifically, the pipeline isolation assembly 1 is composed of a pipeline isolation plate 13 for protecting the heating pipe 12, an inner side isolation plate 16 for heat storage on both sides of the heating pipe 12, and an outer side isolation plate 15 arranged on the outer periphery of the main body 11.

[0024] Specifically, the pipeline isolation plate 13 is wrapped around the outer periphery of the heating pipe 12, the inner side isolation plate 16 is provided with a plurality of level-decreasing through grooves, and the outer side isolation plate 15 is provided with a plurality of equidistant straight grooves.

[0025] Specifically, the inner side isolation plate 16 is made of gradient ceramic material, and the through grooves are arranged in a stepped decreasing manner, with a decrease of 50% in width of each level of through grooves to realize layer-by-layer heat retention. The straight grooves of the outer side isolation plate 15 adopt a radial radiation layout to enhance the heat radiation recovery efficiency while reducing thermal stress concentration. The synergistic effect of the through grooves and the straight grooves causes the heat to form a gradient distribution on the inner wall of the main body 11, thereby improving the heat recovery efficiency while reducing the thermal load of the heat pipe array.

[0026] Specifically, the top of the main body 11 is provided with a top plate 14 for leakage steam isolation, and the bottom of the top plate 14 is provided with a plurality of equidistant steam sensors 141 for sensing steam leakage.

[0027] Specifically, the bottom of the top plate 14 is provided with an array of steam sensors 141, each group of sensors monitors the steam pressure fluctuation in real time through optical fiber conduction. The top plate 14 and the main body 11 are sealed by laser welding, and cooperate with a vacuum pump to maintain the negative pressure state of the cavity, so as to ensure that the steam leakage triggers an audible and light alarm and closes the water inlet and outlet valves. The steam sensor 141 adopts fiber Bragg grating technology to realize high-precision steam pressure monitoring and ensure the sealing reliability of the device in a vacuum state.

[0028] Specifically, the partition assembly 2 is composed of a plurality of isolation plates 23 arranged on the inner wall of the main body 11, and the partition assembly 2 is arranged equidistantly to manage the partition adjustment of the isolation assembly and the flame.

[0029] Specifically, the partition assembly 2 comprises a plurality of groups of adjustable isolation plates 23, each group of plates is connected to the worm gear 233 mechanism of the inner wall of the main body 11 through the rotating shaft 232, the isolation plate 23 is made of high-temperature resistant alloy material, and the surface is sprayed with a heat reflecting coating. The precise partitioning of the flame and the heat pipe array is achieved through angle adjustment, which avoids thermal stress damage caused by local overheating. The isolation plate 23 realizes self-locking angle adjustment through the worm gear 233 and the worm 223 mechanism, which ensures the stability of the adjusted position.

[0030] Specifically, one side of the isolation plate 23 is provided with a rotating block 231 for transmission, the rotating block 231 is fixedly connected with a rotating shaft 232 for angle adjustment of the isolation plate 23, and the outer circumferential surface of the rotating shaft 232 is provided with two symmetrical worm gears 233 for transmission of the rotating shaft 232.

[0031] Specifically, the isolation plate 23 realizes 360-degree rotary adjustment through the rotating block 231, the rotating shaft 232 is internally provided with double-row angular contact bearings to bear axial and radial loads, the worm gear 233 is made of bronze alloy material, and forms self-locking meshing with the worm 223 on the transmission shaft 221 to ensure the stability of the position after angle adjustment and avoid angle deviation caused by vibration. The rotating block 231 is made of stainless steel and the surface is polished to reduce friction resistance and ensure the smoothness of rotary adjustment.

[0032] Specifically, the inside of the main body 11 is provided with eight transmission shafts 221 evenly distributed in the circumference, the outer circumferential surface of the transmission shaft 221 is provided with worm gears 223 corresponding in number to the isolation plates 23, the worm gears 223 are meshed with the worm gears 233, and the worm gears 223 are used to drive the rotation of the worm gears 233. The bottom of one of the transmission shafts 221 is connected through a shaft coupling to a coaxially arranged transmission motor 22, and the transmission motor 22 is used for power output of the rotation of the transmission shaft 221.

[0033] Specifically, the transmission system comprises eight transmission shafts 221 evenly distributed in the circumference, each shaft body is equipped with a worm 223 and is meshed with the worm gear 233 of the isolation plate 23, the main transmission shaft 221 is connected to the transmission motor 22 through a shaft coupling, the transmission motor 22 realizes stepless speed regulation through variable frequency speed regulation control, the inner ring gear 241 and the transmission gear 222 constitute a planetary gear train to ensure the transmission accuracy when each transmission shaft 221 rotates synchronously, and the transmission system adopts grease lubrication and cooperates with a temperature sensor to monitor the bearing temperature rise in real time to prevent transmission failure caused by overheating.

[0034] Specifically, the outer circumferential surface of the transmission shaft 221 is also provided with a transmission gear 222 synchronously driven thereby, the inside of the main body 11 is rotatably provided with an inner ring gear 241 for synchronous transmission of the transmission gear 222, the bottom of the inner ring gear 241 is provided with a limiting circular frame 24 for limiting rotation of the inner ring gear 241, and the outer circumferential surface of the inner ring gear 241 is provided with an auxiliary ball 232 for assisting rotation of the inner ring gear 241.

[0035] Specifically, the inner ring gear 241 is forged from high-strength alloy steel, and the surface is subjected to carburizing and quenching treatment to improve wear resistance, the limiting circular frame 24 and the inner ring gear 241 form a rotating pair through a rolling bearing, the auxiliary ball 232 is made of silicon nitride to reduce the friction coefficient, and a temperature sensor is used to monitor the bearing temperature rise in real time to prevent transmission failure caused by overheating. The meshing gap between the inner ring gear 241 and the transmission gear 222 is precisely adjusted to ensure transmission accuracy and stability, meeting the needs of long-term operation of the device.

[0036] Specific embodiments: when the device is running, the spiral array heating pipe 12 in the vacuum double-layer jacket main body 11 forms a closed cycle through the inlet pipe 121 and the outlet pipe 122, when flowing in the heating pipe 12, the pipe isolation plate 13 in the pipe isolation assembly 1 tightly adheres to the outer wall of the heating pipe 12 to form a primary heat shield, the inside isolation plate 16 realizes layer-by-layer heat retention through the hierarchical decreasing through slot of the gradient ceramic material, and the outside isolation plate 15 straight slot array enhances the heat radiation recovery efficiency, a plurality of isolation sheet plates 23 of the separation assembly 2 are connected to the worm gear 233 mechanism through the rotating shaft 232, and the planetary gear train composed of the transmission motor 22, the worm 223 and the inner ring gear 241 realizes synchronous angle adjustment, each isolation sheet plate 23 is sprayed with a heat reflecting coating, the flame and the heat pipe array are separated by angle adjustment to avoid local thermal stress damage, the top plate 14 at the top integrates the fiber Bragg grating steam sensor 141 array, which monitors the steam pressure fluctuation in real time, and cooperates with the vacuum pump to maintain the negative pressure state of the cavity, ensuring that the steam leakage triggers an audible and visual alarm and closes the inlet and outlet valves; Further, the eight circumferentially distributed transmission shafts 221 are meshed with the worm gears 233 of the isolation sheet plates 23 through the worm 223, the transmission motor 22 adopts variable frequency speed regulation control to realize stepless speed regulation, the planetary gear train composed of the inner ring gear 241 and the transmission gear 222 ensures the synchronous rotation accuracy of each transmission shaft 221, the limiting circular frame 24 and the auxiliary ball 232 form a rotating pair through a rolling bearing, and a temperature sensor is used to monitor the bearing temperature rise in real time to prevent transmission failure caused by overheating; The entire device realizes efficient and deep recovery of industrial waste heat through the synergistic effect of the vacuum heat pipe array and the pipe isolation assembly 1, and ensures zero leakage operation through multiple sealing and monitoring mechanisms.

[0037] The above merely preferred embodiments of the present application are not used to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A zero-leakage vacuum heat pipe arrayed waste heat deep recovery device, comprising a main body (11), a heating pipe (12) is arranged inside the main body (11), the heating pipe (12) is arranged in series covering the inner wall of the main body (11), and a water inlet pipe (121) for water inlet and a water outlet pipe (122) for water outlet are arranged at both ends of the heating pipe (12), characterized in that, The pipeline isolation assembly (1) is arranged between the main body (11) and the heating pipeline (12) for pipeline isolation, and the inner wall of the main body (11) is provided with a separation assembly (2) for separation adjustment.

2. The zero-leakage vacuum heat pipe arrayed waste heat deep recovery device according to claim 1, characterized in that, The pipeline isolation assembly (1) is composed of a pipeline isolation plate (13) for protecting the heating pipeline (12), an inner side isolation plate (16) for storing heat on both sides of the heating pipeline (12), and an outer side isolation plate (15) arranged on the outer periphery of the main body (11).

3. The zero-leakage vacuum heat pipe arrayed waste heat deep recovery device according to claim 2, characterized in that, The pipeline isolation plate (13) is arranged on the outer periphery of the heating pipeline (12), the inner side isolation plate (16) is arranged on the inner wall of the main body (11), and the outer side isolation plate (15) is arranged on the outer periphery of the main body (11).

4. The zero-leakage vacuum heat pipe arrayed waste heat deep recovery device according to claim 3, characterized in that, The pipeline isolation plate (13) is arranged on the outer periphery of the heating pipeline (12), the inner side isolation plate (16) is arranged on the inner wall of the main body (11), and the outer side isolation plate (15) is arranged on the outer periphery of the main body (11).

5. The zero-leakage vacuum heat pipe arrayed waste heat deep recovery device according to claim 1, characterized in that, The top of the main body (11) is provided with a top plate (14) for leakage steam isolation, and the bottom of the top plate (14) is provided with a plurality of equally distributed steam sensors (141), which are used for sensing steam leakage.

6. The zero-leakage vacuum heat pipe arrayed waste heat deep recovery device according to claim 5, characterized in that, The separation assembly (2) is composed of a plurality of isolation sheet plates (23) arranged on the inner wall of the main body (11), and the separation assembly (2) is arranged in equal intervals, and the isolation sheet plate (23) is used for separation adjustment of the isolation assembly and the flame.

7. The zero-leakage vacuum heat pipe arrayed waste heat deep recovery device according to claim 6, characterized in that, One side of the isolation sheet plate (23) is provided with a rotating block (231) for transmission, the rotating block (231) is fixedly connected with a rotating shaft (232) for angle adjustment of the isolation sheet plate (23) inside, and two symmetrical worm gears (233) are arranged on the outer periphery of the rotating shaft (232), which are used for transmission of the rotating shaft (232).

8. The zero-leakage vacuum heat pipe arrayed waste heat deep recovery device according to claim 7, characterized in that, The inside of the main body (11) is provided with eight circumferentially distributed transmission shafts (221), the outer periphery of the transmission shaft (221) is provided with a number of worm gears (223) corresponding to the number of isolation sheet plates (23), the worm gears (223) are engaged with the worm gears (233), and the worm gears (223) are used to drive the rotation of the worm gears (233), wherein the bottom of one of the transmission shafts (221) is connected with a coaxially arranged transmission motor (22) through a shaft coupling, and the transmission motor (22) is used for power output of the rotation of the transmission shaft (221). The outer periphery of the transmission shaft (221) is also provided with a transmission gear (222) which is synchronously driven, the inside of the main body (11) is rotatably installed with an inner gear ring (241) for synchronous transmission of the transmission gear (222), the bottom of the inner gear ring (241) is provided with a limiting circular frame (24) for limiting rotation of the inner gear ring (241), and the outer periphery of the inner gear ring (241) is provided with an auxiliary ball (232) for assisting the rotation of the inner gear ring (241).

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