Intelligent energy management coal-fired boiler energy recovery device

Abstract

The utility model discloses an intelligent energy management coal-fired boiler energy recovery device, and relates to the technical field of boiler energy recovery, the intelligent energy management coal-fired boiler energy recovery device comprises a device main body and a heat recovery mechanism, the heat recovery mechanism is arranged above the device main body, and through the arrangement of the heat recovery mechanism, a smoke outlet connecting pipe is connected into a boiler; then, the temperature in the smoke outlet connecting pipe close to the boiler is detected through an outer pipe temperature sensor, meanwhile, the temperature in the smoke outlet connecting pipe close to the device body is detected through an inner pipe temperature sensor, data is transmitted to an electromagnetic controller after detection, and after the temperature of the outer pipe is higher than that of the inner pipe, an electromagnetic switch valve is controlled to be opened; when the temperature of the inner pipe is higher than that of the outer pipe, the electromagnetic switch valve is closed, the situation that the temperature in the device flows back and influences use of the device is avoided, and after the boiler flue gas enters the first-stage preheating tank, water in the water storage tank is heated through heat in the flue gas.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler energy recovery, in particular to an intelligent energy management coal-fired boiler energy recovery device. Background Art

[0002] A coal-fired boiler is a device that uses coal as fuel and utilizes the heat generated by coal combustion to heat water or generate steam. Coal-fired boilers are very common in my country, but coal-fired boilers have low heat conversion efficiency. Therefore, a coal-fired boiler flue gas waste heat recovery device is needed to recycle the flue gas waste heat generated by coal combustion to improve utilization efficiency.

[0003] After searching, the document with the announcement number "CN215951360U" mentioned that "the utility model discloses a waste heat recovery device for a coal-fired boiler, comprising a recovery device body, wherein the upper and lower ends of one side of the recovery device body are respectively provided with a first inlet and a second outlet, and the upper and lower ends of the other side are respectively provided with a first outlet and a second inlet, the first inlet is connected to the blower through a pipe, the first outlet is connected to the drying box through a pipe, the second inlet is connected to the coal-fired boiler through a pipe, and the second outlet is connected to the water filter tank through a smoke outlet pipe; a hot water exchange pipe is provided inside the recovery device body, one outer end of the hot water exchange pipe is connected to the water inlet, and the other outer end is connected to the water outlet, and the water outlet is connected to the insulated water tank". It introduces cold air by starting the blower to guide the water vapor, but the blower will not only reduce the heat of the water when it is in operation, but also reduce the heat of the water vapor, and the blower needs to be connected to the outside world to be used, which will also cause heat loss, and the overall utilization rate of the waste heat of the boiler flue gas is low.

[0004] To this end, we provide an intelligent energy management coal-fired boiler energy recovery device to solve the above problems. Utility Model Content

[0005] The purpose of the present invention is to provide an intelligent energy management coal-fired boiler energy recovery device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solutions: an intelligent energy management coal-fired boiler energy recovery device, comprising a device body and a heat recovery mechanism, wherein the heat recovery mechanism is provided above the device body;

[0007] The heat recovery mechanism includes an intelligent adjustment component and a recovery and preheating component. The intelligent adjustment component is arranged on the left side of the device body, and the recovery and preheating component is arranged above the device body.

[0008] Preferably, the intelligent adjustment component includes a smoke outlet connecting pipe, an electromagnetic switch valve, an outer tube temperature sensor, an inner tube temperature sensor and an electromagnetic controller. The smoke outlet connecting pipe is installed on the left side of the device body, the electromagnetic switch valve is installed inside the smoke outlet connecting pipe, the outer tube temperature sensor is installed on the left side of the electromagnetic switch valve, and the inner tube temperature sensor is installed on the right side of the electromagnetic switch valve.

[0009] Preferably, an electromagnetic controller is installed at the top of the electromagnetic switch valve, and the electromagnetic controller is electrically connected to the outer tube temperature sensor, and the electromagnetic controller is electrically connected to the inner tube temperature sensor.

[0010] Preferably, the recovery and preheating assembly includes a primary preheating tank, a water storage tank, a circulating smoke pipe, a secondary preheating tank and a tertiary preheating tank. The primary preheating tank is installed at the top of the device body, the water storage tank is installed inside the primary preheating tank, the circulating smoke pipe is provided on the outside of the primary preheating tank, the top of the primary preheating tank is fixedly connected to the secondary preheating tank, and the top of the secondary preheating tank is fixedly connected to the tertiary preheating tank.

[0011] Preferably, a steam recovery component is installed on the inner side of the water storage tank, and the steam recovery component includes a guide baffle, a connecting pipe, a liquid solenoid valve and a liquid level sensor. A guide baffle is installed on the top of the water storage tank, and air holes are evenly opened on the surface of the guide baffle.

[0012] Preferably, a connecting pipe is provided at the center of the guide baffle, and a liquid solenoid valve is installed inside the connecting pipe.

[0013] Preferably, a liquid level sensor is installed on the inner surface of the water storage tank, and the liquid level sensor is electrically connected to the liquid solenoid valve.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. Through the setting of the heat recovery mechanism, the smoke outlet connecting pipe is connected to the boiler, and then the temperature inside the smoke outlet connecting pipe close to the boiler is detected by the outer tube temperature sensor. At the same time, the temperature inside the smoke outlet connecting pipe close to the device body is detected by the inner tube temperature sensor. After detection, the data is transmitted to the electromagnetic controller. When the temperature of the outer tube is higher than that of the inner tube, the electromagnetic switch valve is controlled to open, so that the boiler flue gas enters the device for energy recovery and utilization. When the temperature of the inner tube is higher than that of the outer tube, the electromagnetic switch valve is closed to avoid temperature backflow inside the device and affect the use of the device. After the boiler flue gas enters the first-stage preheating tank, the heat in the flue gas is used to heat the water in the water storage tank. The excess flue gas continuously enters the second-stage preheating tank and the third-stage preheating tank through the circulating smoke pipe to heat the interior, thereby increasing the utilization rate of the boiler flue gas heat.

[0016] 2. Through the setting of the steam recovery component, when the water in the water storage tank reaches a certain heat, the generated water vapor will enter the bottom of other water storage tanks through the guide baffle, thereby heating other water storage tanks through water vapor, improving the overall heat utilization rate, and connecting multiple water storage tanks through connecting pipes. At the same time, the liquid solenoid valve controls the connection between the water storage tanks. After the water in the water storage tank is added to the boiler, the water in the water storage tank is detected through the liquid solenoid valve. When it is detected that the water volume is reduced to a certain amount, the liquid solenoid valve is opened to replenish the water storage tank step by step. After the water is added to a certain amount, the liquid solenoid valve is closed to prevent excessive water addition, ensuring that there is always available water in the water storage tank. At the same time, the preheated water is added to the boiler, which can increase the overall heating speed and reduce energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall appearance structure proposed by the utility model;

[0018] Figure 2 The utility model proposed Figure 1 A in the middle is an enlarged structural diagram;

[0019] Figure 3 This is a schematic diagram of the recovery and preheating component structure proposed in the utility model;

[0020] Figure 4 This is a schematic diagram of the steam recovery component structure proposed in this utility model.

[0021] In the figure: 1. Device body; 2. Heat recovery mechanism; 21. Intelligent adjustment component; 211. Smoke outlet connecting pipe; 212. Solenoid switch valve; 213. External tube temperature sensor; 214. Internal tube temperature sensor; 215. Solenoid controller; 22. Recovery and preheating component; 221. Primary preheating tank; 222. Water storage tank; 223. Circulating smoke pipe; 224. Secondary preheating tank; 225. Third-stage preheating tank; 3. Steam recovery component; 31. Guide baffle; 32. Connecting pipe; 33. Liquid solenoid valve; 34. Liquid level sensor. 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] Example 1

[0024] See also Figure 1-4As shown, an intelligent energy management coal-fired boiler energy recovery device includes a device body 1 and a heat recovery mechanism 2. The heat recovery mechanism 2 is arranged above the device body 1;

[0025] The heat recovery mechanism 2 includes an intelligent adjustment component 21 and a recovery and preheating component 22 . The intelligent adjustment component 21 is provided on the left side of the device body 1 , and the recovery and preheating component 22 is provided above the device body 1 .

[0026] Furthermore, the intelligent adjustment component 21 includes a smoke outlet connecting pipe 211, an electromagnetic switch valve 212, an outer tube temperature sensor 213, an inner tube temperature sensor 214 and an electromagnetic controller 215. The smoke outlet connecting pipe 211 is installed on the left side of the device body 1, and the electromagnetic switch valve 212 is installed inside the smoke outlet connecting pipe 211. The outer tube temperature sensor 213 is installed on the left side of the electromagnetic switch valve 212, and the inner tube temperature sensor 214 is installed on the right side of the electromagnetic switch valve 212. The smoke outlet connecting pipe 211 is connected to the boiler, and then the temperature inside the smoke outlet connecting pipe 211 close to the boiler is detected by the outer tube temperature sensor 213, and at the same time, the temperature inside the smoke outlet connecting pipe 211 close to the device body 1 is detected by the inner tube temperature sensor 214.

[0027] Furthermore, an electromagnetic controller 215 is installed at the top of the electromagnetic switch valve 212. The electromagnetic controller 215 is electrically connected to the outer tube temperature sensor 213, and the electromagnetic controller 215 is electrically connected to the inner tube temperature sensor 214. After detection, the data is transmitted to the electromagnetic controller 215. When the temperature of the outer tube is higher than that of the inner tube, the electromagnetic switch valve 212 is controlled to open, allowing the boiler flue gas to enter the device for energy recovery and utilization. When the temperature of the inner tube is higher than that of the outer tube, the electromagnetic switch valve 212 is closed to avoid temperature reflux inside the device and affect the use of the device.

[0028] Furthermore, the recovery preheating component 22 includes a first-level preheating tank 221, a water storage tank 222, a circulating smoke pipe 223, a second-level preheating tank 224 and a third-level preheating tank 225. The first-level preheating tank 221 is installed at the top of the device body 1, the water storage tank 222 is installed inside the first-level preheating tank 221, the circulating smoke pipe 223 is provided on the outside of the first-level preheating tank 221, the top of the first-level preheating tank 221 is fixedly connected to the second-level preheating tank 224, and the top of the second-level preheating tank 224 is fixedly connected to the third-level preheating tank 225. After the boiler flue gas enters the first-level preheating tank 221, the water in the water storage tank 222 is heated by the heat in the flue gas, and the excess flue gas continuously enters the second-level preheating tank 224 and the third-level preheating tank 225 through the circulating smoke pipe 223 to heat the interior, thereby increasing the utilization rate of the boiler flue gas heat.

[0029] Example 2

[0030] See also Figure 3 and Figure 4 As shown, compared with Example 1, as another embodiment of the present invention, a steam recovery component 3 is installed on the inner side of the water tank 222, and the steam recovery component 3 includes a guide baffle 31, a connecting pipe 32, a liquid solenoid valve 33 and a liquid level sensor 34. A guide baffle 31 is installed on the top of the water tank 222, and air holes are evenly opened on the surface of the guide baffle 31. After the water in the water tank 222 reaches a certain heat, the generated water vapor will pass through the guide baffle 31 into the bottom of the other water tanks 222, thereby heating the other water tanks 222 through the water vapor, thereby improving the overall utilization rate of heat.

[0031] Furthermore, a connecting pipe 32 is provided at the center of the guide baffle 31 , and a liquid solenoid valve 33 is installed inside the connecting pipe 32 . The multiple water storage tanks 222 are connected through the connecting pipe 32 , and the liquid solenoid valve 33 controls the communication between the water storage tanks 222 .

[0032] Furthermore, a liquid level sensor 34 is installed on the inner surface of the water tank 222, and the liquid level sensor 34 is electrically connected to the liquid solenoid valve 33. After the water in the water tank 222 is added to the boiler, the water in the water tank 222 is detected by the liquid solenoid valve 33. When it is detected that the water volume is reduced to a certain amount, the liquid solenoid valve 33 is opened to replenish the water in the water tank 222 step by step. After a certain amount of water is added, the liquid solenoid valve 33 is closed to prevent excessive water addition, thereby ensuring that there is always available water in the water tank 222.

[0033] Working principle: When in use, the first step is to install the device at the location where it is required to be used, and then connect the smoke outlet connecting pipe 211 to the boiler, and then use the outer tube temperature sensor 213 to detect the temperature inside the smoke outlet connecting pipe 211 close to the boiler, and at the same time use the inner tube temperature sensor 214 to detect the temperature inside the smoke outlet connecting pipe 211 close to the device body 1. The second step is to transmit the data to the electromagnetic controller 215 after detection. When the temperature of the outer tube is higher than that of the inner tube, the electromagnetic switch valve 212 is controlled to open, so that the boiler flue gas enters the device for energy recovery and use. When the temperature of the inner tube is higher than that of the outer tube, the electromagnetic switch valve 212 is closed to avoid the temperature backflow inside the device and affect the use of the device. The third step is that after the boiler flue gas enters the first-stage preheating tank 221, the heat in the flue gas is used to heat the water in the water storage tank 222, and the excess flue gas continuously enters the second-stage preheating tank 224 and the third-stage preheating tank through the circulating smoke pipe 223. The interior of the hot tank 225 is heated to increase the utilization rate of the boiler flue gas heat. In the fourth step, after the water in the water storage tank 222 reaches a certain heat, the generated water vapor will enter the bottom of other water storage tanks 222 through the guide baffle 31, thereby heating the other water storage tanks 222 through the water vapor to improve the overall heat utilization rate. In the fifth step, multiple water storage tanks 222 are connected through the connecting pipe 32, and the liquid solenoid valve 33 controls the communication between the water storage tanks 222. After the water in the water storage tank 222 is added to the boiler, the water in the water storage tank 222 is detected through the liquid solenoid valve 33. When it is detected that the water volume is reduced to a certain amount, the liquid solenoid valve 33 is opened to replenish the water storage tank 222 step by step. After the water is added to a certain amount, the liquid solenoid valve 33 is closed to prevent excessive water addition, ensuring that there is always available water in the water storage tank 222. In this way, the use of an intelligent energy management coal-fired boiler energy recovery device is completed.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An intelligent energy management coal-fired boiler energy recovery device, comprising a device body (1) and a heat recovery mechanism (2), characterized in that: A heat recovery mechanism (2) is provided above the device body (1); The heat recovery mechanism (2) comprises an intelligent adjustment component (21) and a recovery and preheating component (22); the intelligent adjustment component (21) is provided on the left side of the device body (1), and the recovery and preheating component (22) is provided above the device body (1); The intelligent adjustment component (21) comprises a smoke outlet connecting pipe (211), an electromagnetic switch valve (212), an outer tube temperature sensor (213), an inner tube temperature sensor (214) and an electromagnetic controller (215); the smoke outlet connecting pipe (211) is installed on the left side of the device body (1); the electromagnetic switch valve (212) is installed inside the smoke outlet connecting pipe (211); the outer tube temperature sensor (213) is installed on the left side of the electromagnetic switch valve (212); and the inner tube temperature sensor (214) is installed on the right side of the electromagnetic switch valve (212); The recovery preheating assembly (22) comprises a primary preheating tank (221), a water storage tank (222), a circulating smoke pipe (223), a secondary preheating tank (224) and a tertiary preheating tank (225); the primary preheating tank (221) is installed at the top of the device body (1); the water storage tank (222) is installed inside the primary preheating tank (221); the circulating smoke pipe (223) is provided on the outside of the primary preheating tank (221); the top of the primary preheating tank (221) is fixedly connected to the secondary preheating tank (224); the top of the secondary preheating tank (224) is fixedly connected to the tertiary preheating tank (225).

2. The intelligent energy management coal-fired boiler energy recovery device according to claim 1 is characterized in that: An electromagnetic controller (215) is installed at the top of the electromagnetic switch valve (212). The electromagnetic controller (215) is electrically connected to the outer tube temperature sensor (213), and the electromagnetic controller (215) is electrically connected to the inner tube temperature sensor (214).

3. The intelligent energy management coal-fired boiler energy recovery device according to claim 1 is characterized in that: A steam recovery assembly (3) is installed on the inner side of the water storage tank (222), and the steam recovery assembly (3) comprises a guide baffle (31), a connecting pipe (32), a liquid solenoid valve (33) and a liquid level sensor (34). A guide baffle (31) is installed on the top of the water storage tank (222), and air holes are evenly opened on the surface of the guide baffle (31).

4. The intelligent energy management coal-fired boiler energy recovery device according to claim 3 is characterized in that: A connecting pipe (32) is provided at the center of the guide baffle (31), and a liquid solenoid valve (33) is installed inside the connecting pipe (32).

5. The intelligent energy management coal-fired boiler energy recovery device according to claim 1, characterized in that: A liquid level sensor (34) is installed on the inner surface of the water storage tank (222), and the liquid level sensor (34) is electrically connected to the liquid solenoid valve (33).

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