A new type of air preheater regenerative element

Abstract

The utility model discloses a novel air preheater heat storage element relates to heat system technical field, including air preheater box, dust cleaning subassembly, flue gas flow rate monitoring subassembly and air temperature monitoring subassembly, the front end fixed mounting of air preheater box has the PLC controller, the both sides of air preheater box inside are welded fixedly with the baffle, and multiple groups of heat storage pipes are fixedly connected with transverse between two groups baffle. This novel air preheater heat storage element is provided with dust cleaning subassembly, when using, dust is attached to the outside of heat storage pipe, and the electric telescopic link of air preheater box both sides synchronously extends, and the fixed connecting seat is pushed along the sliding bar sliding, and the dust ring of limiting column bottom is along the outside of heat storage pipe sliding, and the dust outside heat storage pipe is scraped, and the dust that falls is along the exhaust port and is discharged, has realized the function of easy dust cleaning, and has solved the problem of easy dust deposition difficult cleaning of device pipeline.

Description

Technical Field

[0001] This utility model relates to the field of thermal system technology, specifically to a novel air preheater heat storage element. Background Technology

[0002] The heat storage element of the air preheater is the "heart" of the air preheater. It is the core component responsible for heat exchange, and its main structure includes the outer shell and the internal heat exchange tubes.

[0003] In actual use, flue gas passes through the outer shell of the air preheater, and air passes through the heat exchange tubes. The heat of the flue gas is stored on the heat exchange tubes and the air is heated through the heat exchange tubes. Since the flue gas passes outside the heat exchange tubes, dust in the flue gas is easy to adhere to the heat exchange tubes, which reduces the heat storage and heat conduction capacity of the pipeline. The heat exchange tubes are densely arranged, making cleaning difficult.

[0004] Now, a novel air preheater heat storage element is proposed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to provide a novel heat storage element for an air preheater to solve the problem of easy dust accumulation and difficult cleaning of pipelines mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel air preheater heat storage element, comprising an air preheater housing, a dust removal assembly, a flue gas velocity monitoring assembly, and an air temperature monitoring assembly. A PLC controller is fixedly installed at the front end of the air preheater housing, a flue gas outlet is welded and fixed at the bottom end of the air preheater housing, an exhaust port is welded and fixed at the left side of the air preheater housing, a flue gas inlet is welded and fixed at the top end of the air preheater housing, an air inlet is welded and fixed at the right side of the air preheater housing, and partitions are welded and fixed on both sides inside the air preheater housing. Multiple sets of heat storage tubes are horizontally fixedly connected between the two sets of partitions.

[0007] The dust removal assembly includes eight sets of electric telescopic rods, which are fixedly installed at the four corners on the left and right sides of the air preheater housing. Sliding rods are horizontally fixed between the four corners on the opposite sides of the two sets of partitions. Two sets of fixed connecting seats are slidably connected to the outside of the sliding rods. Pre-reserved sliding holes are opened at the four corners of the fixed connecting seats. Multiple sets of limiting posts are fixedly connected between the front and rear ends inside the fixed connecting seats. A dust removal ring is welded and fixed to the bottom end of the limiting posts.

[0008] As a further technical solution of this utility model, the output end of the electric telescopic rod is connected to the slide rod, and the electric telescopic rod and the PLC controller are electrically connected.

[0009] As a further technical solution of this utility model, the inner diameter of the reserved sliding hole is adapted to the outer diameter of the sliding rod, and the fixed connecting seat can slide left and right along the sliding rod.

[0010] As a further technical solution of this utility model, the shape and size of the fixed connecting seat on the outside are adapted to the shape and size of the air preheater box inside, and the fixed connecting seat can move left and right along the inside of the air preheater box.

[0011] As a further technical solution of this utility model, the heat storage tube passes through the interior of the cleaning ring, the inner diameter of the cleaning ring is the same as the outer diameter of the heat storage tube, and the cleaning ring can slide left and right along the outside of the heat storage tube.

[0012] As a further technical solution of this utility model, the flue gas velocity monitoring component includes a first sensor mounting base, which is welded and fixed to the right side of the flue gas outlet. A target flow sensor is connected to the internal flange of the first sensor mounting base. The PLC controller, the electric telescopic rod, and the target flow sensor are electrically connected.

[0013] As a further technical solution of this utility model, the air temperature monitoring component includes a second sensor mounting base, which is welded and fixed to the top of the exhaust port. A temperature sensor is connected to the internal thread of the second sensor mounting base. A sensor host is fixedly installed on the top of the temperature sensor, and a buzzer is fixedly installed on the right side of the sensor host.

[0014] As a further technical solution of this utility model, the bottom end of the temperature sensor extends into the interior of the inlet and outlet ports, and the PLC controller, temperature sensor, sensor host, and buzzer are electrically connected.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the heat storage element of this new air preheater not only realizes the function of easy ash removal, but also realizes the function of monitoring flue gas flow rate and air temperature; (1) By setting up a dust removal component, when in use, high-temperature flue gas enters the air preheater box along the flue gas inlet and exits from the flue gas outlet. Air enters from the air inlet, is blocked by the baffle, and exits along the heat storage tube and the exhaust port. The heat of the flue gas is stored on the heat storage tube. The heat storage tube heats the air passing through. During the flue gas passage, dust adheres to the outside of the heat storage tube. The electric telescopic rods on both sides of the air preheater box extend synchronously, pushing the fixed connecting seat to slide along the slide rod. The dust removal ring at the bottom of the limit column slides along the outside of the heat storage tube, scraping off the dust outside the heat storage tube. The fallen dust is discharged along the exhaust port, realizing the function of easy dust removal. (2) By setting up a flue gas velocity monitoring component, when in use, high temperature flue gas enters the air preheater box along the inlet and is discharged from the outlet. When a lot of dust accumulates on the outside of the heat storage tube, the flow rate and flow of the flue gas at the outlet will be significantly reduced. The target flow sensor monitors the air velocity in the outlet in real time. When the flow rate is lower than the preset threshold, the dust removal component starts to work, thus realizing the function of monitoring flue gas velocity. (3) By setting up an air temperature monitoring component, when in use, the air heated by the heat storage tube is discharged along the exhaust port. The temperature sensor monitors the air temperature at the exhaust port in real time and feeds the value back to the display screen of the sensor host. When the temperature is lower than the preset threshold, the buzzer sounds, thus realizing the function of monitoring air temperature. Attached Figure Description

[0016] Figure 1 This is a front view structural diagram of the present utility model; Figure 2 This is a front view sectional view of the air preheater housing of this utility model. Figure 3 For the present utility model Figure 2 Enlarged cross-sectional view of point A in the middle section; Figure 4 This is a front view structural diagram of the electric telescopic rod and fixed connecting seat of this utility model in the connected state. Figure 5 This is a side view of the fixed connection seat of this utility model. Figure 6 This is a magnified front view of the temperature sensor of this utility model.

[0017] In the diagram: 1. Air preheater housing; 2. PLC controller; 3. Exhaust port; 4. Exhaust outlet; 5. Inlet; 6. Partition plate; 7. Heat storage tube; 8. Soot removal assembly; 801. Electric telescopic rod; 802. Sliding rod; 803. Fixed connecting seat; 804. Reserved sliding hole; 805. Limiting post; 806. Soot removal ring; 9. Flue gas velocity monitoring assembly; 901. First sensor mounting base; 902. Target flow sensor; 10. Air temperature monitoring assembly; 1001. Second sensor mounting base; 1002. Temperature sensor; 1003. Sensor host; 1004. Buzzer; 11. Inlet. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] Example: Please refer to Figure 1-6 A novel air preheater heat storage element includes an air preheater housing 1, a dust removal assembly 8, a flue gas velocity monitoring assembly 9, and an air temperature monitoring assembly 10. A PLC controller 2 is fixedly installed at the front end of the air preheater housing 1. A flue gas outlet 3 is welded and fixed at the bottom end of the air preheater housing 1. An exhaust outlet 4 is welded and fixed at the left side of the air preheater housing 1. A flue gas inlet 5 is welded and fixed at the top end of the air preheater housing 1. An air inlet 11 is welded and fixed at the right side of the air preheater housing 1. Partition plates 6 are welded and fixed on both sides inside the air preheater housing 1. Multiple sets of heat storage tubes 7 are horizontally fixedly connected between the two sets of partition plates 6. Please see Figure 1-6 A novel air preheater heat storage element also includes a dust removal assembly 8, which includes eight sets of electric telescopic rods 801. The eight sets of electric telescopic rods 801 are fixedly installed at the four corners on the left and right sides of the air preheater housing 1. A sliding rod 802 is horizontally fixed between the four corners of the opposite sides of the two sets of partitions 6. Two sets of fixed connecting seats 803 are slidably connected to the outside of the sliding rod 802. A reserved sliding hole 804 is opened at the four corners of the fixed connecting seat 803. Multiple sets of limiting posts 805 are fixedly connected between the front and rear ends inside the fixed connecting seat 803. A dust removal ring 806 is welded and fixed to the bottom end of the limiting post 805. The output end of the electric telescopic rod 801 is connected to the slide rod 802. The electric telescopic rod 801 and the PLC controller 2 are electrically connected. The inner diameter of the reserved sliding hole 804 is adapted to the outer diameter of the slide rod 802. The fixed connecting seat 803 can slide left and right along the slide rod 802. The external shape and size of the fixed connecting seat 803 are adapted to the internal shape and size of the air preheater box 1. The fixed connecting seat 803 can move left and right along the inside of the air preheater box 1. The heat storage tube 7 passes through the inside of the cleaning ring 806. The inner diameter of the cleaning ring 806 is the same as the outer diameter of the heat storage tube 7. The cleaning ring 806 can slide left and right along the outside of the heat storage tube 7 to facilitate cleaning the internal ash accumulation. Specifically, such as Figure 1 , Figure 2 , Figure 4 and Figure 5As shown, the electric telescopic rods 801 on both sides of the air preheater housing 1 extend synchronously, pushing the fixed connecting seat 803 to slide along the slide rod 802. The dust removal ring 806 at the bottom of the limiting post 805 slides along the outside of the heat storage tube 7, scraping off the dust outside the heat storage tube 7. The fallen dust is discharged along the exhaust port 3.

[0020] The flue gas velocity monitoring component 9 includes a first sensor mounting base 901, which is welded and fixed to the right side of the flue gas outlet 3. The internal flange of the first sensor mounting base 901 is connected to a target flow sensor 902. The PLC controller 2, the electric telescopic rod 801, and the target flow sensor 902 are electrically connected to facilitate monitoring of flue gas flow. Specifically, such as Figure 1 and Figure 3 As shown, the target-type flow sensor 902 monitors the airflow velocity in the smoke exhaust port 3 in real time. When the flow rate is lower than the preset threshold, the dust removal component 8 starts to operate.

[0021] The air temperature monitoring component 10 includes a second sensor mounting base 1001, which is welded and fixed to the top of the exhaust port 4. A temperature sensor 1002 is threadedly connected to the inside of the second sensor mounting base 1001. A sensor host 1003 is fixedly installed on the top of the temperature sensor 1002. A buzzer 1004 is fixedly installed on the right side of the sensor host 1003. The bottom end of the temperature sensor 1002 extends into the interior of the exhaust port 4. The PLC controller 2, the temperature sensor 1002, the sensor host 1003, and the buzzer 1004 are electrically connected to facilitate air temperature monitoring. Specifically, such as Figure 1 , Figure 2 and Figure 6 As shown, the air heated by the heat storage tube 7 is discharged along the exhaust port 4. The temperature sensor 1002 monitors the air temperature at the exhaust port 4 in real time and feeds the value back to the display screen of the sensor host 1003. When the temperature is lower than the preset threshold, the buzzer 1004 sounds.

[0022] Working principle: When this utility model is in use, firstly, high-temperature flue gas enters the air preheater housing 1 through the inlet 5 and exits through the outlet 3. Air enters through the inlet 11, is blocked by the baffle 6, and then exits through the heat storage tube 7 and the outlet 4. The heat of the flue gas is stored on the heat storage tube 7, which heats the air passing through. During the passage of the flue gas, dust adheres to the outside of the heat storage tube 7. When a lot of dust accumulates on the outside of the heat storage tube 7, the flow rate and volume of the flue gas at the outlet 3 will be significantly reduced. The target flow sensor 902 monitors the air flow rate in the outlet 3 in real time. When the flow rate is lower than the preset threshold, the dust removal component 8 starts to work. The electric telescopic rods 801 on both sides of the air preheater housing 1 extend synchronously, pushing the fixed connecting seat 803 to slide along the slide rod 802. The dust removal ring 806 at the bottom of the limit post 805 slides along the outside of the heat storage tube 7, scraping off the dust on the outside of the heat storage tube 7. The fallen dust is discharged through the outlet 3. The air heated by the heat storage tube 7 is discharged through the exhaust port 4. The temperature sensor 1002 monitors the air temperature at the exhaust port 4 in real time and feeds the value back to the display screen of the sensor host 1003. When the temperature is lower than the preset threshold, the buzzer 1004 sounds.

[0023] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A novel air preheater heat storage element, comprising an air preheater housing (1), a dust removal assembly (8), a flue gas velocity monitoring assembly (9), and an air temperature monitoring assembly (10), characterized in that: A PLC controller (2) is fixedly installed at the front end of the air preheater housing (1). A flue gas outlet (3) is welded and fixed at the bottom end of the air preheater housing (1). An exhaust outlet (4) is welded and fixed on the left side of the air preheater housing (1). A flue gas inlet (5) is welded and fixed at the top end of the air preheater housing (1). An air inlet (11) is welded and fixed on the right side of the air preheater housing (1). Partition plates (6) are welded and fixed on both sides inside the air preheater housing (1). Multiple sets of heat storage tubes (7) are horizontally fixed between the two sets of partition plates (6). The cleaning assembly (8) includes eight sets of electric telescopic rods (801). The eight sets of electric telescopic rods (801) are fixedly installed at the four corners on the left and right sides of the air preheater box (1). A sliding rod (802) is horizontally fixed between the four corners on the opposite sides of the two sets of partitions (6). Two sets of fixed connecting seats (803) are slidably connected to the outside of the sliding rod (802). A reserved sliding hole (804) is opened at the four corners of the fixed connecting seat (803). Multiple sets of limiting posts (805) are fixedly connected between the front and rear ends inside the fixed connecting seat (803). A cleaning ring (806) is welded and fixed to the bottom end of the limiting post (805).

2. The novel air preheater heat storage element according to claim 1, characterized in that: The output end of the electric telescopic rod (801) is connected to the slide rod (802), and the electric telescopic rod (801) and the PLC controller (2) are electrically connected.

3. The novel air preheater heat storage element according to claim 1, characterized in that: The inner diameter of the reserved sliding hole (804) is adapted to the outer diameter of the sliding rod (802), and the fixed connecting seat (803) can slide left and right along the sliding rod (802).

4. The novel air preheater heat storage element according to claim 1, characterized in that: The shape and size of the fixed connecting seat (803) are adapted to the shape and size of the air preheater box (1), and the fixed connecting seat (803) can move left and right along the inside of the air preheater box (1).

5. The novel air preheater heat storage element according to claim 1, characterized in that: The heat storage tube (7) passes through the interior of the cleaning ring (806). The inner diameter of the cleaning ring (806) is the same as the outer diameter of the heat storage tube (7). The cleaning ring (806) can slide left and right along the outside of the heat storage tube (7).

6. The novel air preheater heat storage element according to claim 1, characterized in that: The flue gas velocity monitoring component (9) includes a first sensor mounting base (901), which is welded and fixed to the right side of the exhaust port (3). The inner flange of the first sensor mounting base (901) is connected to a target flow sensor (902). The PLC controller (2), the electric telescopic rod (801), and the target flow sensor (902) are electrically connected.

7. The novel air preheater heat storage element according to claim 1, characterized in that: The air temperature monitoring component (10) includes a second sensor mounting base (1001), which is welded and fixed to the top of the exhaust port (4). A temperature sensor (1002) is connected to the internal thread of the second sensor mounting base (1001). A sensor host (1003) is fixedly installed on the top of the temperature sensor (1002), and a buzzer (1004) is fixedly installed on the right side of the sensor host (1003).

8. The novel air preheater heat storage element according to claim 7, characterized in that: The bottom end of the temperature sensor (1002) extends into the interior of the inlet and outlet port (4), and the PLC controller (2), temperature sensor (1002), sensor host (1003), and buzzer (1004) are electrically connected.

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