Heating device utilizing low-grade heat source

Abstract

The invention relates to a heating device utilizing a low-grade heat source, which is characterized in that a water pipe is coaxially sleeved with a heating cylinder fixedly connected with the water pipe, the inner wall of the heating cylinder is coaxially and fixedly connected with a plurality of cut-off check rings uniformly distributed in the axial direction of the heating cylinder, and a plurality of heat conduction assemblies uniformly distributed in the length direction of the water pipe are embedded in the pipe wall of the water pipe; the right end of the heating cylinder fixedly communicates with a heat source transmission pipe, and the left end of the heating cylinder fixedly communicates with a flow guiding and discharging device. The flow guiding and discharging device comprises a vertical pipe, the left end of a transverse pipe integrally communicates with an elbow, the elbow fixedly communicates with the heating cylinder, the transverse pipe fixedly communicates with a discharging pipe, the left end and the right end of a flow guiding block are obliquely-arranged flow guiding faces, a right one-way valve is installed on the vertical pipe, a left one-way valve is installed on the transverse pipe, and a guide sleeve is vertically and slidably connected with a movable rod. The lower end of the movable rod is fixedly connected with a mounting disc which is fixedly connected with a sealing plug, and the upper end of the vertical pipe is fixedly connected with a driving device used for driving the movable rod.

Description

Technical Field

[0001] The present invention relates to the technical field of low-grade heat source utilization devices, in particular to a heating device utilizing a low-grade heat source. Background Art

[0002] Waste heat resources are ubiquitous in industries such as steel, chemicals, petroleum, building materials, light industry, and food. These industries possess abundant waste heat resources of varying grades. Using waste heat recovery technology to recycle this low-grade energy is a key means of energy conservation. Waste heat resources can be categorized by their quality based on the temperature of their carriers. High temperatures indicate a high workability and can be easily utilized even through direct heat transfer, thus creating a "high-grade waste heat resource." Low temperatures indicate a lower quality waste heat resource, representing a low-grade heat source.

[0003] Typical low-grade heat sources include waste heat from boiler flue gas, high-temperature products and slag, cooling media, combustible waste gas, waste liquid, and waste materials. Boiler flue gas, typically at a temperature of 140-180°C, offers significant utilization value. However, in daily production, boiler flue gas is typically discharged directly into the atmosphere, resulting in a waste of resources. This research addresses this issue by developing a heating device that utilizes low-grade heat sources. Summary of the Invention

[0004] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a heating device using a low-grade heat source. The technical solution to the problem is as follows: comprising a water pipe, characterized in that a heating cylinder is coaxially sheathed on the outside of the water pipe and fixedly connected thereto, a plurality of flow-blocking rings uniformly distributed along the axial direction of the heating cylinder are coaxially fixedly connected to the inner wall of the heating cylinder, a plurality of heat-conducting components uniformly distributed along the length direction of the water pipe are embedded in the wall of the water pipe, a heat source transmission pipe is fixedly connected to the right end of the heating cylinder, and a diversion and discharge device is fixedly connected to the left end of the heating cylinder; The left and right ends of the control valve are connected with the control valve, and the control valve is connected with the control valve in a fixed manner.

[0005] Preferably, each of the heat-conducting components includes an intermediate copper plate that is integrally embedded with the wall of the water pipe, the intermediate copper plate is integrally connected to an external copper plate located outside the water pipe, and the intermediate copper plate is integrally connected to an internal copper plate located inside the water pipe. A heat storage tank is provided on the outside, and a number of evenly distributed heat storage holes are provided on the bottom surface of the heat storage tank, and the heat storage holes penetrate into the internal copper plate.

[0006] Preferably, the driving device includes a driven ring fixedly connected to the upper end of the movable rod, a bracket fixedly connected to the outer wall of the vertical tube, the bracket is rotatably connected to the driving shaft, the driving shaft is coaxially fixedly connected to the driving disk, the driving disk is eccentrically fixedly connected to the driving rod, the driving rod is movably plugged into the driven ring, and the bracket is fixedly connected to a motor for driving the driving shaft.

[0007] Preferably, a vertically arranged sliding groove is provided on the outer edge of the movable rod, and a guide block is fixedly connected to the inner wall of the guide sleeve and is vertically slidably matched with the sliding groove.

[0008] The beneficial effects of the present invention are: 1. When the present invention is in use, the water pipe is used to circulate water resources that need to be discharged after the factory area has treated and met the standards. The flue gas discharged by the boiler is subjected to heat exchange treatment to stabilize its temperature at 80-100°C. It is then introduced into the heating cylinder through the heat source transmission pipe to heat the water in the water pipe. After the temperature is raised, it is used as a water heating resource to provide heating supply for the factory area. This not only solves the problem of utilizing boiler flue gas (i.e., a low-grade heat source), but also avoids the waste of water resources after factory treatment.

[0009] 2. During operation, the present invention features several evenly spaced interceptor discs within the heat source transmission tubes, which block the flue gas, allowing it to fill the heating tubes and stagnate within them. This allows the flue gas to fully contact the water pipes, heating the water therein for water heating, thereby facilitating factory heating. Heat-conducting components are embedded within the water pipes, efficiently transferring heat from the flue gas to the water within them, rapidly heating the water.

[0010] 3. The diversion and discharge component can work at the left end of the heating cylinder, thereby guiding the flue gas to flow from right to left in the heating cylinder. At the same time, the water in the water pipe is set to flow from left to right, that is, the water and flue gas are countercurrent, ensuring the heating effect of the flue gas on the water in the water pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a full cutaway stereoscopic view of the present invention.

[0012] Figure 2 For the present invention Figure 1 Magnified view of area A in center.

[0013] Figure 3 For the present invention Figure 2 Magnified view of area B.

[0014] Figure 4 This is a partial three-dimensional cross-sectional view from the first perspective of the present invention.

[0015] Figure 5 This is a partial three-dimensional cross-sectional view from a second viewing angle of the present invention.

[0016] Figure 6 This is a partial three-dimensional cross-sectional view from the third viewing angle of the present invention.

[0017] Figure 7 This is a partial stereoscopic view from the fourth viewing angle of the present invention.

[0018] Figure 8 For the present invention Figure 7 Magnified view of area C in the middle.

[0019] Figure 9 This is a stereoscopic view from the fifth viewing angle of the present invention.

[0020] Reference numerals 1. Water pipe, 2. Heating tube, 3. Cut-off retaining ring, 4. Heat transfer component, 5. Heat source transmission pipe, 6. Diversion and discharge device, 7. Vertical pipe, 8. Horizontal pipe, 9. Elbow, 10. Discharge pipe, 11. Diversion block, 12. Diversion surface, 13. Right one-way valve, 14. Left one-way valve, 15. Guide sleeve, 16. Movable rod, 17. Mounting plate, 18. Sealing plug, 19. Drive device, 20. Middle copper plate, 21. Outer copper plate, 22. Inner copper plate, 23. Heat storage tank, 24. Heat storage hole, 25. Driven ring, 26. Bracket, 27. Drive shaft, 28. Drive plate, 29. Drive rod, 30. Motor, 31. Slide, 32. Guide block. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1-9 The specific embodiments of the present invention are described in further detail.

[0022] In Example 1, the technical solution is as follows: During use, the present invention uses water pipe 1 to circulate water that meets factory standards and needs to be discharged. The flue gas discharged from the boiler undergoes heat exchange treatment, stabilizing its temperature at 80-100°C. The flue gas is then introduced into the heating cylinder 2 through the heat source transmission pipe 5 to heat the water in the water pipe 1. The heated water then serves as a water heating resource to provide heating for the factory. This solves the problem of utilizing boiler flue gas (i.e., a low-grade heat source) while also avoiding waste of treated water resources. During use, the present invention incorporates several evenly spaced interceptor discs within the heat source transmission pipe 5 to block the flue gas, allowing it to fill the heating cylinder 2 and stagnate there. This allows the flue gas to fully contact the water pipe 1, thereby heating the water in the water pipe 1 and providing water heating for the factory. A heat conducting assembly 4 is embedded in the water pipe 1, efficiently transferring heat from the flue gas to the water in the water pipe 1, rapidly heating the water. The diversion and discharge component can work at the left end of the heating tube 2, thereby guiding the flue gas to flow from right to left in the heating tube 2. At the same time, the water in the water pipe 1 is set to flow from left to right, that is, the water and the flue gas are countercurrent, ensuring the heating effect of the flue gas on the water in the water pipe 1.

[0023] Since the flue gas emitted by the boiler is generally at a temperature of 140-180°C, it needs to be cooled by heat exchange in a heat exchange device before being introduced into the factory area to a temperature of 80-100°C for ease of use. This step can be implemented using existing technology and will not be described in detail in this application. The flue gas after heat exchange is then fed into the heating cylinder 2 through the heat source transmission pipe 5 to heat the water in the water pipe 1, thereby increasing its temperature and providing water heating for the factory area.

[0024] Example 2, based on Example 1, specifically, when the present application is in use, the boiler flue gas is fed into the heating tube 2 through the heat source transmission pipe 5. A diversion and discharge device 6 is provided at the right end of the heating tube 2 to guide the flue gas to flow from right to left in the heating tube 2 and be discharged through the discharge pipe 10, while the water in the water pipe 1 flows from left to right. The flue gas entering the tube is slowed down by the obstruction of the numerous interception retaining rings 3, so that the flue gas can fully fill the heating tube 2, allowing the water pipe 1 and the heat conducting component 4 to fully contact the flue gas, and the heat of the flue gas can heat the water in the water pipe 1. At the same time, in order to prevent the flue gas from being unable to be discharged and updated in time due to the obstruction of the interception retaining ring 3, and to guide the flue gas to flow from right to left in the heating tube 2, a diversion and discharge device 6 is provided. The flue gas enters the right side of the heating tube 2 from the heat source transmission pipe 5 and is discharged from the diversion and discharge device 6 on the left side of the heating tube 2, guiding the flue gas in the heating tube 2 to flow from right to left. The heat conducting component 4 is composed of an outer copper plate 21, an intermediate copper plate 20 and an inner copper plate 22 made of copper. The heat transfer efficiency is extremely high, and the inner copper plate 22 is located in the water pipe 1 and can directly contact the water in the water pipe 1, which facilitates the rapid heating of the water. The flue gas in the heating tube 2 can be accumulated in the heat storage tank 23 and the heat storage hole 24 of the heat conducting component 4. The heat storage hole 24 leads to the inner side of the inner copper plate 22, which facilitates the inner copper plate 22 to efficiently provide heat to the water in the water pipe 1.

[0025] Example 3, based on Example 2, further, in order to facilitate the flow and renewal of the flue gas in the heating tube 2 so that the heating tube 2 always maintains high-temperature flue gas, a diversion and discharge device 6 is provided. The right one-way valve 13 in the diversion and discharge device 6 only allows the flue gas to pass from bottom to top, while the left one-way valve 14 only allows the flue gas to pass from right to left. When the flow discharge component is in operation, the motor 30 of the drive device 19 needs to be started. The start of the motor 30 will drive the drive shaft 27 on the bracket 26 to rotate, and the drive shaft 27 will drive the drive disk 28 to rotate synchronously. The rotation of the drive disk 28 will drive the movable rod 16 to move vertically back and forth along the guide sleeve 15 through the cooperation of the drive rod 29 and the driven ring 25. Then, the movable rod 16 will drive the sealing plug 18 to move vertically back and forth along the inner wall of the vertical rod through the mounting plate 17. The sliding groove 31 on the movable rod 16 vertically slides with the guide block 32 in the guide sleeve 15, limiting the vertical rod to slide vertically relative to the guide sleeve 15.

[0026] Since the right one-way valve 13 only allows the flue gas to pass from bottom to top, and the left one-way valve 14 only allows the flue gas to pass from right to left, when the movable rod 16 drives the sealing plug 18 to move upward along the vertical pipe 7, the movable rod 16 will upwardly suck the flue gas in the heating tube 2 under the action of the sealing plug 18. Under the suction action, the flue gas has enough pressure to pass through the right one-way valve 13 and enter the vertical pipe 7. Thereafter, the movable rod 16 will move downward along the vertical pipe 7. During the downward movement of the sealing plug 18, the sealing plug 18 will compress the flue gas that has previously entered the vertical pipe 7 to flow toward the cross pipe 8. Under the pressure of the sealing plug 18, the flue gas pressure is sufficient to pass through the left one-way valve 14 and flow quickly toward the exhaust pipe 10 through the left one-way valve 14. The cross pipe 8 is provided with a guide block 11 corresponding to the inlet end of the exhaust pipe 10, and the guide block 11 is provided in the cross pipe 8. A guide surface 12 is arranged at the right end of the block 11, so the flue gas in the vertical pipe 7 quickly passes through the left one-way valve 14 under the pressure of the sealing plug 18, and will be guided to the exhaust pipe 10 for discharge under the action of the guide surface 12 on the right side of the guide block 11; when the flue gas entering the vertical pipe 7 passes through the one-way valve under the pressure of the sealing plug 18 and is discharged from the exhaust pipe 10, the flue gas in the heating tube 2 can also enter the horizontal pipe 8 from the left end of the horizontal pipe 8 through the elbow 9 and flow toward the guide block 11. The left end of the guide block 11 is also provided with a guide surface 12. When the flue gas entering the vertical pipe 7 quickly passes through the one-way valve under the pressure of the sealing plug 18 and is discharged from the exhaust pipe 10, the fast-flowing airflow will attract the flue gas entering the horizontal pipe 8 from the elbow 9 to flow through the guide surface 12 on the left to the exhaust pipe 10 for simultaneous discharge. The diversion and discharge device 6 can limit the emission of flue gas per unit time, and the diversion block 11 also limits the flow rate of flue gas at the inlet end of the discharge pipe 10, avoiding excessive emission of flue gas per unit time, which causes the heating pipe to be unable to be filled with flue gas, thereby ensuring the heating effect.

Claims

1. A heating device using a low-grade heat source, comprising a water pipe (1), characterized in that: The water pipe (1) is coaxially sleeved with a heating tube (2) fixedly connected thereto on its exterior, the heating tube (2) is coaxially fixedly connected to the inner wall of the heating tube (2) with a plurality of flow-blocking rings (3) uniformly distributed along its axial direction, the tube wall of the water pipe (1) is embedded with a plurality of heat-conducting components (4) uniformly distributed along its length direction, the right end of the heating tube (2) is fixedly connected to a heat source transmission tube (5), and the left end of the heating tube (2) is fixedly connected to a diversion discharge device (6); The diversion and discharge device (6) includes the lower end of a vertical pipe (7) fixedly connected to the upper part of the heating pipe, the middle and lower part of the vertical pipe (7) is fixedly connected to the right end of the horizontal pipe (8), the left end of the horizontal pipe (8) is integrally connected to one end of an elbow (9), the other end of the elbow (9) is fixedly connected to the heating cylinder (2), the upper part of the horizontal pipe (8) is fixedly connected to the inlet end of the discharge pipe (10), the inner wall of the horizontal pipe (8) is fixedly connected to a diversion block (11) corresponding to the inlet end of the exhaust pipe, the left and right ends of the diversion block (11) are both obliquely arranged diversion surfaces (12), and the vertical pipe (7) is provided with a guide block (12) located below the horizontal pipe (8). The left one-way valve (13) is installed on the right side of the discharge pipe (10), and the left one-way valve (14) is installed on the horizontal pipe (8). The upper end of the vertical pipe (7) is coaxially arranged with a guide sleeve (15). The guide sleeve (15) is vertically slidably connected to a movable rod (16). The lower end of the movable rod (16) is coaxially fixedly connected to a mounting plate (17). The lower end of the mounting plate (17) is coaxially fixedly connected to a sealing plug (18) that is in sliding contact with the inner wall of the vertical pipe (7). The sealing plug (18) is located above the horizontal pipe (8). The upper end of the vertical pipe (7) is fixedly connected to a driving device (19) for driving the movable rod (16).

2. A heating device using a low-grade heat source according to claim 1, characterized in that: Each of the heat-conducting components (4) comprises an intermediate copper plate (20) integrally embedded with the wall of the water pipe (1), the intermediate copper plate (20) being integrally connected to an external copper plate (21) located outside the water pipe (1), the intermediate copper plate (20) being integrally connected to an internal copper plate (22) located inside the water pipe (1), a heat storage tank (23) being provided on the external portion, a plurality of evenly distributed heat storage holes (24) being provided on the bottom surface of the heat storage tank (23), and the heat storage holes (24) penetrating into the internal copper plate (22).

3. The heating device using a low-grade heat source according to claim 1, characterized in that: The driving device (19) includes a driven ring (25) fixedly connected to the upper end of the movable rod (16), a bracket (26) fixedly connected to the outer wall of the vertical tube (7), the bracket (26) rotatably connected to the driving shaft (27), the driving shaft (27) is coaxially fixedly connected to the driving disk (28), the driving disk (28) is eccentrically fixedly connected to the driving rod (29), the driving rod (29) is movably plugged into the driven ring (25), and the bracket (26) is fixedly connected to a motor (30) for driving the driving shaft (27).

4. The heating device using a low-grade heat source according to claim 1, characterized in that: The outer edge of the movable rod (16) is provided with a vertically arranged sliding groove (31), and the inner wall of the guide sleeve (15) is fixedly connected with a guide block (32) that vertically slides with the sliding groove (31).

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