Steam waste heat recycling device for producing autoclaved aerated concrete slabs

Abstract

The utility model discloses a steam waste heat recycling device for producing autoclaved aerated concrete slabs, and belongs to the technical field of steam waste heat recovery, the steam waste heat recycling device comprises an autoclaved box, a supporting frame is placed on one side of the autoclaved box, a gas storage tank is fixedly mounted at the top of the supporting frame, and a discharge pipe is fixedly mounted at the top of the autoclaved box; a connecting pipe is fixedly installed at the top of the gas storage tank, the end, away from the discharging pipe, of the heat preservation conveying pipe is fixedly connected with the connecting pipe, a cold water pipe is fixedly installed in the gas storage tank, and the water inlet end of the cold water pipe penetrates through the top of the side wall of the gas storage tank; the water outlet end of the cold water pipe penetrates through the bottom of the air storage tank and is fixedly provided with a water adding pipe. The side, away from the air storage tank, of the water adding pipe is fixedly installed at the bottom of the steam box. The energy consumption is reduced, and the energy utilization efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of steam waste heat recovery, and in particular to a steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels. Background Art

[0002] Autoclaved aerated concrete is a porous concrete product made of fly ash, lime, cement, gypsum, slag and other main raw materials, with appropriate amount of gas generating agent, regulator, bubble stabilizer added, and processed through processes such as batching, mixing, pouring, static stopping, cutting and high-pressure steaming. The autoclave is used in the autoclave process, and fresh steam is introduced into the autoclave to steam-cure the concrete product under a certain pressure. The remaining steam is discharged after the autoclave completes the steaming.

[0003] When the existing device is in use, the boiler generates steam, and the steam is directly discharged after use, without considering the reuse of the waste heat of the steam. The energy consumption is large and the energy waste is serious. Therefore, the present application provides a steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels. Utility Model Content

[0004] In view of the shortcomings of the prior art, the present application provides a steam waste heat recovery and utilization device for the production of autoclaved aerated concrete panels, which overcomes the shortcomings of the prior art and aims to solve the problem that when the prior art is in use, the boiler generates steam, and the steam is directly discharged after use, without considering the reuse of the waste heat of the steam, resulting in high energy consumption and serious energy waste.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solution: a steam waste heat recovery device for producing autoclaved aerated concrete panels, comprising an autoclave, a support frame is placed on one side of the autoclave, a gas tank is fixedly installed on the top of the support frame, a discharge pipe is fixedly installed on the top of the autoclave, a thermal insulation delivery pipe is fixedly connected to the top of the discharge pipe, a connecting pipe is fixedly installed on the top of the gas tank, an end of the thermal insulation delivery pipe away from the discharge pipe is fixedly connected to the connecting pipe, a cold water pipe is fixedly installed inside the gas tank, a water inlet end of the cold water pipe passes through the top of the side wall of the gas tank, a water outlet end of the cold water pipe passes through the bottom of the gas tank and a water adding pipe is fixedly installed, and the side of the water adding pipe away from the gas tank is fixedly installed at the bottom of the autoclave.

[0006] By adopting the above technical scheme, a group of concrete products are placed in an autoclave for autoclaving. After the autoclaving is completed, the steam enters the gas storage tank after passing through the discharge pipe, the heat-insulating delivery pipe, and the connecting pipe in sequence. The external water source is connected to the water inlet end of the cold water pipe, and the cold water enters the cold water pipe. At this time, the steam is discharged into the gas storage tank, and the residual heat of the steam is fully in contact with the cold water pipe to heat the cold water in the cold water pipe. The heated water enters the autoclave from the bottom end of the cold water pipe through the water adding pipe. When the autoclave puts the next group of concrete products for autoclaving, since the cold water has been preheated when passing through the gas storage tank, when it is heated again at this time, energy consumption is reduced and energy utilization efficiency is improved.

[0007] As a preferred technical solution of the present application, a temperature detector is fixedly installed on the inner wall of the gas storage tank above the cold water pipe, and a pressure detector is fixedly installed on the inner wall of the gas storage tank on one side of the temperature detector.

[0008] By adopting the above technical solution, the temperature of the gas tank is monitored by a temperature detector, and the pressure of the gas tank is monitored by a pressure detector, so that the temperature and pressure changes in the gas tank are detected in real time, ensuring that the gas tank operates within a safe temperature and pressure range, thereby improving the safety of the operation of the device.

[0009] As a preferred technical solution of the present application, the shape of the cold water pipe is a continuous S-shape.

[0010] By adopting the above technical solution, the shape of the cold water pipe is a continuous S shape, which increases the time for cold water to travel from the water inlet end of the cold water pipe to the water outlet end of the cold water pipe, thereby improving the heating effect of the steam from the gas storage tank.

[0011] As a preferred technical solution of the present application, a heat-insulating layer is fixedly installed on the outer wall of the gas storage tank, and the material of the heat-insulating layer is aluminum silicate fiber.

[0012] By adopting the above technical solution, aluminum silicate fiber is used as a high-temperature thermal insulation material, which has a strong thermal insulation effect, is beneficial to improving the thermal insulation performance of the gas storage tank, and greatly reduces the loss of steam in the gas storage tank.

[0013] As a preferred technical solution of the present application, a display is fixedly mounted on the outer wall of the support frame, and the temperature detector and the pressure detector are both connected to the display signal.

[0014] By adopting the above technical solution, the temperature and pressure data monitored by the temperature detector and the temperature detector can be viewed through the display, which is convenient for the user to identify the working conditions inside the gas storage tank.

[0015] As a preferred technical solution of the present application, a valve is fixedly installed at the connection between the discharge pipe and the insulated delivery pipe, a pressure relief pipe is fixedly installed at the bottom of the gas storage tank, and a pressure relief valve is fixedly installed inside the pressure relief pipe.

[0016] By adopting the above technical solution, the discharge of steam from the discharge pipe is controlled by the valve, and the waste steam in the gas storage tank is easily discharged through the pressure relief valve, thereby improving the practicality during use.

[0017] Beneficial effects of this application:

[0018] 1. Place a group of concrete products in the autoclave for autoclaving. After the autoclave is completed, the steam passes through the discharge pipe, the insulation delivery pipe, the connecting pipe and then enters the gas storage tank. The external water source is connected to the water inlet end of the cold water pipe, and the cold water enters the cold water pipe. At this time, the steam is discharged into the gas storage tank, and the residual heat of the steam is fully in contact with the cold water pipe to heat the cold water in the cold water pipe. The heated water enters the autoclave from the bottom of the cold water pipe through the water adding pipe. When the autoclave puts the next group of concrete products for autoclaving, the cold water has been preheated when passing through the gas storage tank. When it is heated again at this time, energy consumption is reduced and energy utilization efficiency is improved.

[0019] 2. The temperature of the gas tank is monitored by a temperature detector, and the pressure of the gas tank is monitored by a pressure detector, so as to monitor the temperature and pressure changes in the gas tank in real time, ensure that the gas tank operates within a safe temperature and pressure range, and improve the safety of the operation of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of this application;

[0022] Figure 3 for Figure 2 Enlarged structural diagram at A in the middle.

[0023] In the figure: 1. Autoclave; 2. Support frame; 3. Gas storage tank; 4. Discharge pipe; 5. Insulated delivery pipe; 6. Connecting pipe; 7. Cold water pipe; 9. Water supply pipe; 10. Temperature detector; 11. Pressure detector; 12. Insulation layer; 13. Display; 14. Valve; 15. Pressure relief pipe; 16. Pressure relief valve. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0025] Reference Figure 1-3 A steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels comprises an autoclave 1, a support frame 2 is placed on one side of the autoclave 1, a gas storage tank 3 is fixedly installed on the top of the support frame 2, a discharge pipe 4 is fixedly installed on the top of the autoclave 1, a heat preservation delivery pipe 5 is fixedly connected to the top of the discharge pipe 4, a connecting pipe 6 is fixedly installed on the top of the gas storage tank 3, one end of the heat preservation delivery pipe 5 away from the discharge pipe 4 is fixedly connected to the connecting pipe 6, a cold water pipe 7 is fixedly installed inside the gas storage tank 3, a water inlet end of the cold water pipe 7 passes through the top of the side wall of the gas storage tank 3, a water outlet end of the cold water pipe 7 passes through the bottom of the gas storage tank 3, and a water supply pipe 9 is fixedly installed, and the side of the water supply pipe 9 away from the gas storage tank 3 is fixedly installed at the bottom of the autoclave 1; the shape of the cold water pipe 7 is a continuous S shape.

[0026] A group of concrete products are placed in the autoclave 1 for autoclaving. After the autoclaving is completed, the steam is discharged from the discharge pipe 4, the heat-insulating delivery pipe 5, and the connecting pipe 6 in sequence and then enters the gas storage tank 3. The external water source is connected to the water inlet end of the cold water pipe 7, and the cold water enters the cold water pipe 7. At this time, the steam is discharged into the gas storage tank 3, and the residual heat of the steam is fully in contact with the cold water pipe 7 to heat the cold water in the cold water pipe 7. The heated water enters the autoclave 1 from the bottom end of the cold water pipe 7 through the water adding pipe 9. When the autoclave 1 puts the next group of concrete products for autoclaving, since the cold water has been preheated when passing through the gas storage tank 3, when it is heated again at this time, the energy consumption is reduced and the energy utilization efficiency is improved. The shape of the cold water pipe 7 is a continuous S shape, which increases the time for the cold water to travel from the water inlet end of the cold water pipe 7 to the water outlet end of the cold water pipe 7, and improves the heating effect of the steam from the gas storage tank 3.

[0027] Reference Figure 2-3The inner wall of the gas storage tank 3 is located above the cold water pipe 7 and is fixedly installed with a temperature detector 10, and the inner wall of the gas storage tank 3 is located on one side of the temperature detector 10 and is fixedly installed with a pressure detector 11; the outer wall of the gas storage tank 3 is fixedly installed with a thermal insulation layer 12, and the material of the thermal insulation layer 12 is aluminum silicate fiber; a valve 14 is fixedly installed at the connection between the discharge pipe 4 and the insulation delivery pipe 5, a pressure relief pipe 15 is fixedly installed at the bottom of the gas storage tank 3, and a pressure relief valve 16 is fixedly installed inside the pressure relief pipe 15; the temperature of the gas storage tank 3 is monitored by the temperature detector 10, and the pressure detector 11 is fixedly installed on the inner wall of the gas storage tank 3; the temperature of the gas storage tank 3 is monitored by the temperature detector 10, and the pressure detector 11 is fixedly installed on the outer wall of the gas storage tank 3. The measuring instrument 11 monitors the pressure of the gas tank 3, thereby detecting the temperature and pressure changes in the gas tank 3 in real time, ensuring that the gas tank 3 operates within a safe temperature and pressure range, and improving the safety of the operation of the device; the aluminum silicate fiber is a high-temperature thermal insulation material with a strong thermal insulation effect, which is beneficial to improving the thermal insulation performance of the gas tank 3 and greatly reducing the loss of steam in the gas tank 3; the valve 14 is used to control the discharge of steam from the discharge pipe 4, and the pressure relief valve 16 is used to facilitate the discharge of waste steam in the gas tank 3, thereby improving the practicality during use.

[0028] Reference Figure 1 A display 13 is fixedly installed on the outer wall of the support frame 2, and the temperature detector 10 and the pressure detector 11 are both connected to the display 13 signal; the aluminum silicate fiber is a high-temperature thermal insulation material with a strong thermal insulation effect, which is beneficial to improving the thermal insulation performance of the gas storage tank 3 and greatly reducing the loss of steam in the gas storage tank 3.

[0029] Working principle: a group of concrete products are placed in the autoclave 1 for autoclave operation. After the autoclave is completed, the steam is discharged from the discharge pipe 4, the heat preservation delivery pipe 5, and the connecting pipe 6 in turn and then enters the gas storage tank 3. The external water source is connected to the water inlet end of the cold water pipe 7, and the cold water enters the cold water pipe 7. At this time, the steam is discharged into the gas storage tank 3, and the residual heat of the steam is fully in contact with the cold water pipe 7 to heat the cold water in the cold water pipe 7. The heated water enters the autoclave 1 from the bottom end of the cold water pipe 7 through the water adding pipe 9. When the autoclave 1 puts the next group of concrete products for autoclave operation, since the cold water has been preheated when passing through the gas storage tank 3, when it is heated again at this time, the energy consumption is reduced and the energy utilization efficiency is improved. The temperature of the gas storage tank 3 is monitored by the temperature detector 10, and the pressure detector 11 monitors the pressure of the gas storage tank 3, so as to change the temperature and pressure in the gas storage tank 3 in real time, ensure that the gas storage tank 3 operates within a safe temperature and pressure range, and improve the safety of the operation of the device;

[0030] Among them, the shape of the cold water pipe 7 is a continuous S-shape, which increases the time for cold water to flow from the water inlet end of the cold water pipe 7 to the water outlet end of the cold water pipe 7, thereby improving the heating effect of the steam in the gas storage tank 3. The aluminum silicate fiber is a high-temperature heat-insulating material with a strong heat-insulating effect, which is beneficial to improving the heat-insulating performance of the gas storage tank 3 and greatly reducing the loss of steam in the gas storage tank 3.

[0031] At the same time, aluminum silicate fiber is a high-temperature heat-insulating material with a strong heat-insulating effect, which is beneficial to improving the heat-insulating performance of the gas storage tank 3 and greatly reducing the loss of steam in the gas storage tank 3;

[0032] In addition, the valve 14 is used to control the discharge of steam from the discharge pipe 4, and the pressure relief valve 16 is used to facilitate the discharge of waste steam in the gas storage tank 3, thereby improving the practicality during use.

[0033] The above description is only the preferred embodiment of the present application and is not intended to limit the present application. Although the present application is 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 replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A steam waste heat recovery device for producing autoclaved aerated concrete panels, comprising an autoclave (1), characterized in that: A support frame (2) is placed on one side of the autoclave (1), a gas storage tank (3) is fixedly installed on the top of the support frame (2), a discharge pipe (4) is fixedly installed on the top of the autoclave (1), a heat preservation delivery pipe (5) is fixedly connected to the top of the discharge pipe (4), a connecting pipe (6) is fixedly installed on the top of the gas storage tank (3), an end of the heat preservation delivery pipe (5) away from the discharge pipe (4) is fixedly connected to the connecting pipe (6), a cold water pipe (7) is fixedly installed inside the gas storage tank (3), a water inlet end of the cold water pipe (7) passes through the top of the side wall of the gas storage tank (3), a water outlet end of the cold water pipe (7) passes through the bottom of the gas storage tank (3), and a water supply pipe (9) is fixedly installed, and the side of the water supply pipe (9) away from the gas storage tank (3) is fixedly installed at the bottom of the autoclave (1).

2. The steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels according to claim 1, characterized in that: A temperature detector (10) is fixedly mounted on the inner wall of the gas storage tank (3) above the cold water pipe (7), and a pressure detector (11) is fixedly mounted on the inner wall of the gas storage tank (3) on one side of the temperature detector (10).

3. The steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels according to claim 1, characterized in that: The cold water pipe (7) is in a continuous S-shape.

4. The steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels according to claim 1, characterized in that: A thermal insulation layer (12) is fixedly mounted on the outer wall of the gas storage tank (3), and the thermal insulation layer (12) is made of aluminum silicate fiber.

5. The steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels according to claim 2, characterized in that: A display (13) is fixedly mounted on the outer wall of the support frame (2), and the temperature detector (10) and the pressure detector (11) are both connected to the display (13) by signals.

6. The steam waste heat recovery and utilization device for producing autoclaved aerated concrete panels according to claim 1, characterized in that: A valve (14) is fixedly installed at the connection between the discharge pipe (4) and the heat-insulating delivery pipe (5), a pressure relief pipe (15) is fixedly installed at the bottom of the gas storage tank (3), and a pressure relief valve (16) is fixedly installed inside the pressure relief pipe (15).

Images