Boiler flue gas waste heat recovery device

Abstract

The utility model relates to the technical field of boiler waste heat recovery, and discloses a boiler flue gas waste heat recovery device which comprises a waste heat recovery box, the top of the waste heat recovery box is fixedly connected with an installation clamping ring, a connecting pipeline is inserted into the installation clamping ring, and the bottom of the waste heat recovery box is fixedly connected with a supporting bottom rod. The rear end of the waste heat recovery box is fixedly connected with a first blow-off pipe, the inner wall of the waste heat recovery box is fixedly connected with a fixed cross rod, and a through groove is formed in the fixed cross rod. According to the waste heat recycling device, through the arrangement of the fixed cross rod and the through grooves on the inner wall of the waste heat recycling box, when waste heat and smoke enter the waste heat recycling box, the waste heat and the smoke enter the space between the waste heat recycling box and the water storage box through the through grooves and the through hole plates formed in the fixed cross rod, the flowing speed is reduced, and the waste heat utilization time is prolonged; and the working efficiency during waste heat recycling of the equipment is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a boiler waste heat recovery technical field especially relates to a boiler flue gas waste heat recovery device. BACKGROUND

[0002] In the operation process of pressure-bearing hot water boiler, fuel combustion will produce high-temperature flue gas. These high-temperature flue gas carries a large amount of heat, which is usually directly discharged into the atmosphere, causing energy waste and environmental heat pollution. Flue gas waste heat recovery is to recycle this part of the originally wasted heat, and its principle is mainly based on heat exchange. Through specific equipment, high-temperature flue gas is contacted with low-temperature medium (such as water or air), and heat is transferred from high-temperature flue gas to low-temperature medium. Taking water as an example, when low-temperature water enters the waste heat recovery equipment and meets high-temperature flue gas, heat will spontaneously transfer from flue gas to water, causing the temperature of water to rise.

[0003] The existing boiler flue gas waste heat recovery device has the problem that when the equipment recycles and utilizes flue gas and waste heat, the flow speed is fast when the flue gas and waste heat flow in the equipment, resulting in low heating efficiency of the equipment for recycling and utilizing flue gas and waste heat. UTILITY MODEL CONTENTS

[0004] To solve the above technical problems, the utility model provides a boiler flue gas waste heat recovery device.

[0005] The utility model adopts the following technical scheme to realize: a boiler flue gas waste heat recovery device, comprising a waste heat recovery box, the top of the waste heat recovery box is fixedly connected with a mounting snap ring, the inside of the mounting snap ring is inserted with a connecting pipeline, the bottom of the waste heat recovery box is fixedly connected with a supporting bottom rod;

[0006] The rear end of the waste heat recovery box is fixedly connected with a blowdown pipe one, the inner wall of the waste heat recovery box is fixedly connected with a fixed cross bar, the inside of the fixed cross bar is provided with a through slot, the surface of the fixed cross bar is fixedly connected with a water storage tank, the front and rear ends of the water storage tank are fixedly connected with a through hole plate, the front of the water storage tank is fixedly connected with a connecting branch pipe, the right end of the water storage tank is fixedly connected with a blowdown pipe two, the inner wall bottom end of the water storage tank is fixedly connected with a deflector.

[0007] By the above technical scheme, the bottom of the connecting pipeline is in contact with the top surface of the waste heat recovery tank, and such close contact helps to ensure the sealing of the flue gas when entering the waste heat recovery tank from the connecting pipeline, and the reduction of flue gas leakage can ensure that more heat can be absorbed by the structure in the waste heat recovery tank, thereby improving the efficiency of waste heat recovery.

[0008] As a further improvement of the above scheme, the number of the supporting bottom rods is two, and the two supporting bottom rods are symmetrically distributed left and right around the waste heat recovery tank, and the bottom of the connecting pipeline is in contact with the top surface of the waste heat recovery tank.

[0009] By the above technical scheme, the supporting bottom rods can ensure the supporting stability of the waste heat recovery tank and the water storage tank when the waste heat recovery tank is operated in cooperation with the water storage tank.

[0010] As a further improvement of the above scheme, the number of the fixed horizontal rods is four, and each two is a group, and the four fixed horizontal rods are symmetrically distributed up and down around the water storage tank.

[0011] As a further improvement of the above scheme, the connecting branch pipe extends to the front end through the waste heat recovery tank, and the through-hole plate is fixedly connected to the inner wall of the waste heat recovery tank.

[0012] As a further improvement of the above scheme, the number of the through-hole plates is several, and the several through-hole plates are symmetrically distributed around the waste heat recovery tank.

[0013] As a further improvement of the above scheme, the blowdown pipe II extends to the right end through the waste heat recovery tank, and the water storage tank is located in the interior of the waste heat recovery tank.

[0014] As a further improvement of the above scheme, the flow guide plate is located at the left end of the blowdown pipe II, and the flow guide plate is located in the interior of the waste heat recovery tank.

[0015] Compared with the prior art, the utility model has the advantages that:

[0016] The fixed horizontal rods and the through grooves of the inner wall of the waste heat recovery tank can reduce the flow speed when the waste heat and the flue gas enter the interior of the waste heat recovery tank, increase the waste heat utilization time, and improve the working efficiency of the equipment during waste heat recovery and utilization.

[0017] This invention utilizes fixed crossbars and a water tank to ensure stability during waste heat recovery. This is because the water inside the tank may experience convection as it absorbs heat; instability in the water tank could affect water flow and heat exchange efficiency. Four fixed crossbars secure the water tank from both above and below, effectively resisting various forces generated during water flow and heat exchange, ensuring the water tank remains fixed within the waste heat recovery system, and thus guaranteeing the normal operation of the entire waste heat recovery device. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the frontal anatomical structure of the present invention;

[0020] Figure 3 This is a schematic diagram of the disassembled structure of the waste heat recovery box of this utility model;

[0021] Figure 4 This is a schematic diagram of the structure of this utility model from below;

[0022] Figure 5 This is a schematic diagram of the right-side structure of this utility model.

[0023] Explanation of key symbols:

[0024] 1. Waste heat recovery box; 2. Installation retaining ring; 3. Connecting pipe; 4. Supporting base rod; 5. Drain pipe one; 6. Fixing crossbar; 7. Through groove; 8. Water storage tank; 9. Connecting branch pipe; 10. Through hole plate; 11. Drain pipe two; 12. Guide plate. Detailed Implementation

[0025] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0026] Example:

[0027] Please combine Figures 1-5 This embodiment of a boiler flue gas waste heat recovery device includes a waste heat recovery box 1, an installation ring 2 is fixedly connected to the top of the waste heat recovery box 1, a connecting pipe 3 is inserted into the inside of the installation ring 2, and a support base rod 4 is fixedly connected to the bottom of the waste heat recovery box 1.

[0028] The rear end of the waste heat recovery tank 1 is fixedly connected with a blowdown pipe 5, the inner wall of the waste heat recovery tank 1 is fixedly connected with a fixed cross bar 6, the inside of the fixed cross bar 6 is provided with a through slot 7, the surface of the fixed cross bar 6 is fixedly connected with a water storage tank 8, the front and rear ends of the water storage tank 8 are fixedly connected with a through hole plate 10, the front surface of the water storage tank 8 is fixedly connected with a connecting branch pipe 9, the right end of the water storage tank 8 is fixedly connected with a blowdown pipe 11, and the inner wall bottom end of the water storage tank 8 is fixedly connected with a flow guide plate 12. By arranging the fixed cross bar 6 and the through slot 7 on the inner wall of the waste heat recovery tank 1, when the waste heat and flue gas enter the inside of the waste heat recovery tank 1, the multiple through slots 7 and the through hole plate 10 arranged in the fixed cross bar 6 can reduce the flow speed when the waste heat and flue gas enter between the waste heat recovery tank 1 and the water storage tank 8, increase the waste heat utilization time, and improve the working efficiency of the equipment in the waste heat recovery and utilization process.

[0029] The bottom of the connecting pipeline 3 is in contact with the top surface of the waste heat recovery tank 1. This close contact helps to ensure the sealing of the flue gas when it enters the waste heat recovery tank 1 from the connecting pipeline 3. Reducing flue gas leakage can ensure that more heat can be absorbed by the structure inside the waste heat recovery tank 1, improving the efficiency of waste heat recovery. At the same time, close contact is also conducive to heat conduction between the connecting pipeline 3 and the waste heat recovery tank 1. Because good contact can reduce thermal resistance, heat can be more smoothly transferred from high-temperature flue gas to the medium inside the waste heat recovery tank 1.

[0030] The number of support bottom bars 4 is set to two, and the two support bottom bars 4 are distributed symmetrically left and right around the waste heat recovery tank 1. The bottom of the connecting pipeline 3 is in contact with the top surface of the waste heat recovery tank 1.

[0031] The support bottom bar 4 can ensure the stability of the waste heat recovery tank 1 and the water storage tank 8 during processing operations.

[0032] The number of fixed cross bars 6 is set to four, and each two is a group. The four fixed cross bars 6 are distributed symmetrically up and down around the water storage tank 8. By arranging the fixed cross bar 6 and the water storage tank 8 to remain stable during the waste heat recovery process, because the water inside may produce convection and other phenomena when absorbing heat, if the water storage tank 8 is unstable, it may affect the flow state of the water and the heat exchange efficiency. The four fixed cross bars 6 fix the water storage tank 8 from the top and bottom directions, which can effectively resist various forces generated during water flow and heat exchange, ensure the position of the water storage tank 8 in the waste heat recovery tank 1, and thus ensure the normal operation of the entire waste heat recovery device.

[0033] The connecting branch pipe 9 extends to the front end through the waste heat recovery tank 1, and the through hole plate 10 is fixedly connected to the inner wall of the waste heat recovery tank 1.

[0034] The number of the through-hole plates 10 is set to several, and the several through-hole plates 10 are symmetrically distributed with the waste heat recovery tank 1 as the center.

[0035] The blowdown pipe two 11 extends to the right end through the waste heat recovery tank 1, and the water storage tank 8 is located in the inside of the waste heat recovery tank 1.

[0036] The flow guide plate 12 is located at the left end of the blowdown pipe two 11, and the flow guide plate 12 is located in the inside of the waste heat recovery tank 1.

[0037] The implementation principle of the boiler flue gas waste heat recovery device in the embodiment of the application is as follows: through the fixed cross bars 6 and the through grooves 7 arranged on the inner wall of the waste heat recovery tank 1, when the waste heat and the flue gas enter the inside of the waste heat recovery tank 1, the waste heat and the flue gas can enter between the waste heat recovery tank 1 and the water storage tank 8 through the multiple through grooves 7 and the through-hole plates 10 arranged in the inside of the fixed cross bars 6, the flow speed is reduced, the waste heat utilization time is increased, and the working efficiency of the equipment in the waste heat recovery utilization process is improved; the fixed cross bars 6 and the water storage tank 8 need to be kept stable in the waste heat recovery process, because the water in the inside of the water storage tank 8 may generate convection and other phenomena when absorbing heat, if the water storage tank 8 is unstable, the water flow state and the heat exchange efficiency may be affected; the four fixed cross bars 6 fix the water storage tank 8 from the upper and lower directions, can effectively resist various forces generated in the water flow and heat exchange process, ensure that the position of the water storage tank 8 in the waste heat recovery tank 1 is fixed, and thus the normal operation of the entire waste heat recovery device is ensured.

[0038] The above embodiment is only a preferred embodiment of the application, and cannot be used to limit the range of protection of the application, and any non-substantial change and replacement made by the person skilled in the art on the basis of the application all belong to the range of protection of the application.

Claims

1. A boiler flue gas waste heat recovery device characterized by, Including waste heat recovery tank (1), the top of waste heat recovery tank (1) is fixedly connected with mounting snap ring (2), the inside of mounting snap ring (2) is inserted with connecting pipeline (3), the bottom of waste heat recovery tank (1) is fixedly connected with support bottom rod (4); The rear end of waste heat recovery tank (1) is fixedly connected with blowdown pipe one (5), the inner wall of waste heat recovery tank (1) is fixedly connected with fixed cross rod (6), the inside of fixed cross rod (6) is provided with through slot (7), the surface of fixed cross rod (6) is fixedly connected with water storage tank (8), the front and rear ends of water storage tank (8) are fixedly connected with through hole plate (10), the front of water storage tank (8) is fixedly connected with connecting branch pipe (9), the right end of water storage tank (8) is fixedly connected with blowdown pipe two (11), the inner wall bottom end of water storage tank (8) is fixedly connected with flow guide plate (12).

2. A boiler flue gas waste heat recovery device according to claim 1, characterized in that: The number of support bottom rod (4) is two, two support bottom rods (4) are distributed symmetrically left and right around waste heat recovery tank (1), the bottom of connecting pipeline (3) is in contact with the top surface of waste heat recovery tank (1).

3. A flue gas heat recovery device for a boiler as claimed in claim 1, characterized in that: The number of fixed cross rod (6) is four, and every two is a group, four fixed cross rods (6) are distributed symmetrically up and down around water storage tank (8).

4. A flue gas heat recovery device for a boiler as claimed in claim 1, characterized in that: Connecting branch pipe (9) extends to the front end through waste heat recovery tank (1), through hole plate (10) is fixedly connected to the inner wall of waste heat recovery tank (1).

5. A flue gas heat recovery device for a boiler as claimed in claim 1, characterized in that: The number of through hole plate (10) is several, and several through hole plates (10) are symmetrically distributed around waste heat recovery tank (1).

6. A flue gas heat recovery device for a boiler as claimed in claim 1, characterized in that: Blowdown pipe two (11) extends to the right end through waste heat recovery tank (1), water storage tank (8) is located in the inside of waste heat recovery tank (1).

7. A flue gas heat recovery device for a boiler as claimed in claim 1, characterized in that: Flow guide plate (12) is located at the left end of blowdown pipe two (11), and flow guide plate (12) is located in the inside of waste heat recovery tank (1).

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