Autoclaved waste heat recovery device for tubular pile production

Abstract

The utility model discloses an autoclaved waste heat recovery device for tubular pile production, which relates to the technical field of waste heat recovery and comprises a steam curing pool, a condensate water pool is arranged on the outer wall of the steam curing pool, a recovery structure is arranged on the side face of the steam curing pool and comprises a low-temperature water tank, an autoclave and a vacuumizing device, and a high-temperature water tank is arranged on the side face of the low-temperature water tank. A condensate water return pump is arranged between the low-temperature water tank and the condensate pool, a vacuumizing spraying pump is arranged on the side face of the low-temperature water tank, and a plurality of nozzles are arranged in an inner cavity of the still kettle. Through the arrangement of the recycling structure, heat in the steam curing pool and the still kettle can be recycled, energy waste is reduced, energy saving and yield making are achieved, the energy-saving effect of tubular pile production is improved, meanwhile, under the cooperation of the installation structure, convenience is provided for disassembly and assembly of the nozzles in the still kettle, and the production efficiency is improved. The nozzle can be flexibly overhauled and replaced after being used for a long time, the effectiveness of the energy recovery process is guaranteed, and meanwhile the energy recovery efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to a device for recovering waste heat from autoclaving in pipe pile production. Background Art

[0002] Pipe piles are a type of supporting structure, mainly used in infrastructure projects such as railways, highways, bridges, ports, docks, water conservancy, municipal administration, structures and large equipment. The production process of pipe piles is: material mixing - skeleton production - skeleton installation - concrete spreading - mold closing - centrifugation - primary steam curing - demoulding - high-pressure steam curing.

[0003] Existing pipe piles typically consume a large amount of steam during the primary steam curing and high-pressure steam curing processes. Since the primary steam curing process is performed in a steam curing tank, the steam transfers heat to the pipe piles, condenses into condensed water, and is then discharged from the bottom of the steam curing tank. However, the temperature of the condensed water is often above 60 degrees Celsius, and direct discharge results in energy waste. In existing high-pressure autoclave production methods, after high-pressure steam curing, to avoid affecting production continuity, the autoclave will first pour steam into the steam curing tank to utilize the steam in the autoclave. However, when the pressure in the autoclave is lower than 0.3 MPa, the steam pouring process becomes more difficult, resulting in a slow steam pouring speed, which in turn affects production and interrupts the continuous effect of production. To avoid affecting production, the remaining steam in the autoclave (lower than 0.3 MPa) is usually directly discharged, which also results in a large amount of energy waste. Therefore, to solve the above energy waste problem, a pipe pile production autoclave waste heat recovery device is proposed. Utility Model Content

[0004] The purpose of the utility model is to provide a device for recovering waste heat from autoclaving in pipe pile production to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a device for recovering waste heat from autoclaving of pipe pile production, comprising a steam curing tank, a condensation water pool being fixedly provided on the outer wall of the steam curing tank, and a recovery structure being provided on the side of the steam curing tank, wherein the recovery structure comprises:

[0006] A low-temperature water tank is movably arranged on the side of the steam-curing tank. A high-temperature water tank is fixedly arranged on the side of the low-temperature water tank away from the steam-curing tank. A condensate return pump is fixedly arranged between the low-temperature water tank and the condensate water tank. A vacuum spray pump is fixedly arranged on the side of the low-temperature water tank close to the steam-curing tank.

[0007] An autoclave, the autoclave is fixedly mounted on the side of the high-temperature water tank, and a plurality of nozzles are movably arranged in the inner cavity of the autoclave;

[0008] A vacuum pumping device, the vacuum pumping device is fixedly arranged on the top of the high-temperature water tank;

[0009] Wherein, a transmission component is provided below the high-temperature water tank, and the transmission component is used for transporting liquid.

[0010] Preferably, the transmission component includes a high-temperature water tank circulation pump and an autoclave spray pump, the high-temperature water tank circulation pump is fixedly arranged below the high-temperature water tank, the autoclave spray pump is located on one side of the high-temperature water tank circulation pump, and a curing tank spray pump is arranged on one side of the autoclave spray pump.

[0011] Preferably, the autoclave is provided with a mounting structure, which includes a groove, a mounting plate and two limit assemblies. The groove is opened at the top of the autoclave, the mounting plate is embedded in the inner cavity of the groove, and the two limit assemblies are symmetrically arranged at the top of the autoclave.

[0012] Preferably, the limiting assembly includes a limiting plate, two slide grooves and two first springs, the two slide grooves are opened at the top of the autoclave, the two first springs are respectively fixedly arranged in the inner cavity of the two slide grooves, and the two ends of the limiting plate are respectively movably arranged with the inner cavity of the two slide grooves.

[0013] Preferably, a positioning structure is provided between the slide groove and the limit plate, and the positioning structure includes a movable plate, a positioning rod and a positioning groove, the positioning groove is opened on the inner wall of the slide groove, the positioning rod is movably provided on the movable plate, and the movable plate is fixed to the outer wall of one end of the limit plate.

[0014] Preferably, the outer wall fixing sleeve of the positioning rod is provided with a second spring, and the second spring is used for automatic movement of the position of the positioning rod.

[0015] The technical effects and advantages of this utility model are:

[0016] The utility model discloses a recycling structure is provided, so that the heat in the steam curing tank and the autoclave used in the production of pipe piles can be recycled and utilized, thereby reducing energy waste, realizing energy-saving and yield-generating, and improving the energy-saving effect of pipe pile production. At the same time, with the cooperation of the installation structure, it is convenient for the disassembly and assembly of the nozzle in the autoclave, so that the nozzle can be flexibly repaired and replaced after long-term use, thereby ensuring the effectiveness of the energy recovery process and improving the efficiency of energy recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the cross-sectional structure of the utility model.

[0018] Figure 2 This is a schematic diagram of the top structure of the autoclave and its installation structure of the utility model.

[0019] Figure 3 For this utility model Figure 2 A is an enlarged structural diagram of FIG.

[0020] Figure 4 It is a schematic diagram of the three-dimensional structure of the positioning rod and the second spring of the utility model.

[0021] In the figure: 100, steam curing tank; 200, recovery structure; 201, low-temperature water tank; 202, high-temperature water tank; 203, vacuum device; 204, high-temperature water tank circulation pump; 205, vacuum spray pump; 206, condensate return pump; 207, autoclave spray pump; 208, nozzle; 209, autoclave; 210, condensate pool; 300, mounting structure; 301, groove; 302, mounting plate; 303, limit plate; 304, slide; 305, first spring; 400, positioning structure; 401, movable plate; 402, positioning rod; 403, second spring; 404, positioning groove. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] The utility model provides Figure 1-4 The illustrated apparatus for recovering waste heat from autoclaving of tubular piles comprises a steaming tank 100, a condensing water tank 210 being fixedly disposed on the outer wall of the steaming tank 100, and a recovery structure 200 being disposed on the side of the steaming tank 100. The recovery structure 200 comprises a low-temperature water tank 201, an autoclave 209, and a vacuum pump 203. The low-temperature water tank 201 is movably disposed on the side of the steaming tank 100, a high-temperature water tank 202 being fixedly disposed on the side of the low-temperature water tank 201 facing away from the steaming tank 100, a condensing water return pump 206 being fixedly disposed between the low-temperature water tank 201 and the condensing water tank 210, a vacuum spray pump 205 being fixedly disposed on the side of the low-temperature water tank 201 near the steaming tank 100, an autoclave 209 being fixedly disposed on the side of the high-temperature water tank 202, a plurality of nozzles 208 being movably disposed within the inner cavity of the autoclave 209, and the vacuum pump 203 being fixedly disposed on the top of the high-temperature water tank 202.

[0024] Among them, a transmission component is arranged below the high-temperature water tank 202, and the transmission component is used for transporting liquid. The transmission component includes a high-temperature water tank circulation pump 204 and an autoclave spray pump 207. The high-temperature water tank circulation pump 204 is fixedly arranged below the high-temperature water tank 202, and the autoclave spray pump 207 is located on one side of the high-temperature water tank circulation pump 204. A steam curing tank spray pump is arranged on one side of the autoclave spray pump 207.

[0025] Specific reference Figure 1A connecting valve is installed between the high-temperature water tank 202 and the low-temperature water tank 201. The vacuum device 203 adopts the existing vacuum technology. The vacuum principle is not described in detail in this embodiment. The condensed water condensed in the steam curing tank 100 is pumped into the low-temperature water tank 201 by the condensate return pump 206. At the same time, the connecting valve between the low-temperature water tank 201 and the high-temperature water tank 202 is opened to discharge a part of the condensed water into the high-temperature water tank 202 (only in real time during the first startup). After the steam supply to the autoclave 209 is completed, the waste heat recovery program is started, and the high-temperature water tank circulation pump 204 and the vacuum spray pump 205 are started at the same time. At this time, the vacuum device 203 generates negative pressure under the action of the high-temperature water tank circulation pump 204. The steam in the autoclave 209 is sucked into the vacuum device 203 under the action of the negative pressure. The condensed water in the low-temperature water tank 201 is sent to the waste steam pipe in the front section of the vacuum device 203 by the vacuum spray pump 205 for spraying, and is mixed with the water in the high-temperature water tank 202. The steam and the hot water are fully mixed in the vacuum device 203, promoting heat transfer from the steam to the water for heat recovery. When the temperature of the heat-absorbing water reaches 80-90°C, it can be used for spray preheating of the curing tank 100. After the residual steam in the autoclave 209 is evacuated and exhausted, the water in the high-temperature water tank 202 is sprayed into the autoclave 209 through the nozzle 208, absorbing the heat in the autoclave and vaporizing the sprayed water into steam. The vacuum device 203 is then activated, and the negative pressure of the vacuum system is applied to the water drawn into the vacuum device 203. The water is fully mixed with the water in the high-temperature water tank 202 and the low-temperature water tank 201. The heat is again transferred from the steam to the water for heat recovery and used for spray preheating of the curing tank 100. Thus, through the above process, the heat of the condensed water in the curing tank 100, the heat of the residual steam in the autoclave 209, and the heat of the autoclave shell can all be recovered and utilized to varying degrees, achieving the effect of autoclave waste heat recovery and achieving energy saving and profit generation.

[0026] The autoclave 209 is provided with a mounting structure 300, which includes a groove 301, a mounting plate 302 and two limit assemblies. The groove 301 is opened at the top of the autoclave 209, and the mounting plate 302 is embedded in the inner cavity of the groove 301. The two limit assemblies are symmetrically arranged at the top of the autoclave 209. The limit assembly includes a limit plate 303, two slide grooves 304 and two first springs 305. The two slide grooves 304 are both opened at the top of the autoclave 209. The two first springs 305 are respectively fixedly arranged in the inner cavities of the two slide grooves 304, and the two ends of the limit plate 303 are respectively movably arranged with the inner cavities of the two slide grooves 304.

[0027] Specific reference Figure 2 and Figure 3The inner cavity of the slide groove 304 is fixedly provided with a rod body, and the first spring 305 and the limit plate 303 are movably sleeved on the outside of the rod body. The arrangement of the rod body is convenient for improving the stability of the movement of the limit plate 303. The cross section of the groove 301 is a convex shape. The mounting plate 302 is embedded in the inner cavity of the groove 301 by means of the shape difference of the groove 301. The outer wall of the mounting plate 302 is fixedly provided with a rubber pad for increasing the sealing effect with the groove 301, so that after the mounting plate 302 is embedded in the groove 301, the sealing in the autoclave 209 is guaranteed. The arrangement of the groove 301 and the mounting plate 302 provides space for the disassembly and assembly of the nozzle 208 in the autoclave 209, which provides convenience for the disassembly and assembly of the nozzle 208 in the autoclave 209. The cam 303 is in the shape of an inverted concave character 306, and the outer wall of the limiting plate 303 is in contact with the outer wall curvature of the autoclave 209. After the mounting plate 302 is embedded in the groove 301, the limiting plate 303 moves to the top of the mounting plate 302 and is in contact with the top of the mounting plate 302 to limit the mounting plate 302, thereby ensuring the stability of the connection between the mounting plate 302 and the groove 301. The limiting plate 303 is installed in the sliding groove 304 through the end of the first spring 305, so that the limiting plate 303 can move its position by sliding, which is convenient to move, reducing the disassembly and assembly time of the mounting plate 302, and greatly saving the time of disassembly and assembly of the mounting plate 302 while ensuring the stable installation of the mounting plate 302, thereby improving the convenience and efficiency of disassembly and assembly of the mounting plate 302.

[0028] A positioning structure 400 is arranged between the slide groove 304 and the limit plate 303. The positioning structure 400 includes a movable plate 401, a positioning rod 402 and a positioning groove 404. The positioning groove 404 is opened on the inner wall of the slide groove 304. The positioning rod 402 is movably arranged on the movable plate 401. The movable plate 401 is fixed to the outer wall of one end of the limit plate 303. The outer wall fixing sleeve of the positioning rod 402 is provided with a second spring 403. The second spring 403 is used for automatic movement of the position of the positioning rod 402.

[0029] Specific reference Figure 3 and Figure 4The movable plate 401 is movably sleeved on the outside of the rod body, and the second spring 403 is fixedly arranged between the positioning rod 402 and the movable plate 401. The top of the positioning rod 402 passes through the top of the movable plate 401 and extends upward, which is convenient for applying force to the positioning rod 402. The movable plate 401 is fixedly arranged with the limit plate 303, and the movable plate 401 is fixedly arranged with the first spring 305, so that the movable plate 401 and the limit plate 303 move synchronously. When the symmetrical limit plate 303 moves in the opposite direction, the movable plate 401 will drive the positioning rod 402 to move toward the positioning slot 404, and the movable plate 401 will move. During the movement, the positioning rod 402 uses the compression performance of the second spring 403 to move along the slide groove 304. When it moves above the positioning groove 404, the positioning rod 402 uses the elastic performance of the second spring 403 to pop up downward, so that it can be connected with the positioning groove 404, thereby limiting the position of the movable plate 401 and the limit plate 303, so that the limit plate 303 does not affect the movement of the mounting plate 302 during the disassembly and assembly of the mounting plate 302, thereby ensuring the flexibility of the disassembly and assembly of the mounting plate 302, and further enhancing the flexibility and effectiveness of the disassembly and assembly of the mounting plate 302.

[0030] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A device for recovering waste heat from autoclaving of pipe piles, comprising a steam curing tank (100), wherein a condensation water tank (210) is fixedly provided on the outer wall of the steam curing tank (100), characterized in that: A recovery structure (200) is provided on the side of the steaming tank (100), and the recovery structure (200) comprises: a low-temperature water tank (201), the low-temperature water tank (201) being movably arranged on a side of the steaming tank (100); a high-temperature water tank (202) being fixedly arranged on the side of the low-temperature water tank (201) facing away from the steaming tank (100); a condensate return pump (206) being fixedly arranged between the low-temperature water tank (201) and the condensate water tank (210); and a vacuum spray pump (205) being fixedly arranged on the side of the low-temperature water tank (201) close to the steaming tank (100); An autoclave (209), the autoclave (209) being fixedly arranged on the side of the high-temperature water tank (202), and a plurality of nozzles (208) being movably arranged in the inner cavity of the autoclave (209); A vacuum pumping device (203), wherein the vacuum pumping device (203) is fixedly arranged on the top of the high-temperature water tank (202); Wherein, a transmission component is provided below the high-temperature water tank (202), and the transmission component is used for transporting liquid.

2. The device for recovering waste heat from autoclaving of pipe pile production according to claim 1, characterized in that: The transmission component comprises a high-temperature water tank circulation pump (204) and an autoclave spray pump (207); the high-temperature water tank circulation pump (204) is fixedly arranged below the high-temperature water tank (202); the autoclave spray pump (207) is located on one side of the high-temperature water tank circulation pump (204); and a curing tank spray pump is arranged on one side of the autoclave spray pump (207).

3. The device for recovering waste heat from autoclaving of pipe pile production according to claim 1, characterized in that: The autoclave (209) is provided with a mounting structure (300), the mounting structure (300) comprising a groove (301), a mounting plate (302) and two limiting components, the groove (301) being opened at the top of the autoclave (209), the mounting plate (302) being embedded in the inner cavity of the groove (301), and the two limiting components being symmetrically arranged at the top of the autoclave (209).

4. The device for recovering waste heat from autoclaving of pipe pile production according to claim 3, characterized in that: The limiting assembly includes a limiting plate (303), two chutes (304) and two first springs (305). The two chutes (304) are both opened at the top of the autoclave (209). The two first springs (305) are respectively fixedly arranged in the inner cavities of the two chutes (304). The two ends of the limiting plate (303) are respectively movably arranged in the inner cavities of the two chutes (304).

5. The device for recovering waste heat from autoclaving of pipe pile production according to claim 4, characterized in that: A positioning structure (400) is provided between the slide groove (304) and the limiting plate (303), and the positioning structure (400) includes a movable plate (401), a positioning rod (402) and a positioning groove (404), wherein the positioning groove (404) is provided on the inner wall of the slide groove (304), the positioning rod (402) is movably provided on the movable plate (401), and the movable plate (401) is fixedly provided with an outer wall of one end of the limiting plate (303).

6. The device for recovering waste heat from autoclaving of pipe pile production according to claim 5, characterized in that: The outer wall fixing sleeve of the positioning rod (402) is provided with a second spring (403), and the second spring (403) is used for automatically moving the position of the positioning rod (402).

Images