Economizer with H-shaped fins

Abstract

The utility model discloses a coal economizer with H-shaped fins, which relates to the technical field of coal economizers and comprises a bottom plate and a protective box, a heat transfer circulating component is arranged on the outer wall of the protective box, cold water in a water tank is conveyed into a recirculation pipeline by a water pumping pipe and is conveyed into a water containing frame for use through a water inlet and a water passing pipe, and when water supply is stopped, a recirculation door can be opened, and the heat transfer circulating component is arranged on the outer wall of the protective box. Water in the coal economizer rises to enter the steam pocket due to small heating density, the water in the steam pocket can be continuously supplemented into the coal economizer through the recirculation pipeline, natural circulation is formed, heat is taken away, the coal economizer is protected, and nano particles can be added into cold water in the recirculation pipeline through the arranged feeding opening. The nano particles are added into cold water, so that the physical property of fluid can be changed, the heat transfer coefficient is increased, and heat is more effectively transferred from flue gas to feed water; and meanwhile, the thermal stability of the fluid can be enhanced, and the problems of scaling and corrosion under the high-temperature condition are reduced, so that the service life of the economizer is prolonged, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of economizers, in particular to an economizer with H-shaped fins. Background Art

[0002] In the heat transfer process of the existing H-shaped fin economizer, heat transfer is carried out through the fins on both sides, while the top and bottom of the water pipe are not heated, resulting in poor heat conduction effect of the existing H-shaped fin economizer. Moreover, dust is likely to accumulate on the fins of the existing H-shaped fin economizer, resulting in a reduction in the heat transfer efficiency between the fins and the water pipe, thereby reducing the practicability and convenience of the existing H-shaped fin economizer.

[0003] In the patent with the publication number of CN108916855B, an H-shaped fin economizer with good heat conduction effect is proposed. In this patent, it includes a water pipe, fins, a lead screw, a transmission wheel, a moving block, a heat transfer sheet, a ball, a swing rod, a spray head, a connecting shaft, a gear, a driven wheel, and a rotating block. The heat transfer area of the water pipe is enlarged through a heat transfer mechanism, improving the heat conduction effect of the H-shaped fin economizer. Compared with the existing heat transfer mechanism, this heat transfer mechanism can be quickly disassembled through the limit between the ball and the convex block during disassembly, making the convenience of this heat transfer mechanism stronger. Dust on the fins is cleaned through a cleaning mechanism, reducing the influence of dust on the heat transfer efficiency of the fins, thereby making the practicability and convenience of the H-shaped fin economizer stronger. Compared with the existing cleaning mechanism, the cleaning unit and the swing unit of this cleaning mechanism operate independently, making the operating efficiency of this cleaning mechanism stronger. However, there are still the following problems in this patent:

[0004] During the use of the existing economizer, it is necessary to heat the cold water in the economizer. During long-term use, it takes a certain amount of time to heat the cold water before using the boiler. During the initial stage of boiler ignition or the shutdown process, since continuous water inlet is not possible, the water in the economizer hardly flows, and the pipe wall cannot be cooled well, easily overheating and burning out, resulting in poor heat transfer effect.

[0005] In view of the above problems, it is necessary to design an economizer with H-shaped fins to overcome the above problems. Summary of the Utility Model

[0006] The main purpose of the utility model is to provide an economizer with H-shaped fins, which can effectively solve the problems in the background art.

[0007] To achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0008] An economizer with H-shaped fins includes a bottom plate and a protective box. The protective box is installed on the top of the bottom plate, and a heat transfer and circulation component is arranged on the outer wall of the protective box;

[0009] The heat transfer cycle component includes a water inlet arranged at the lower right end of the front of the protection box. A recirculation pipe is installed on the right side of the water inlet. A connection flange is installed at the left end of the outer wall of the recirculation pipe. A water pipe is connected to the back of the water inlet. A protection block is arranged in the middle of the outer wall of the recirculation pipe. A sealing cylinder is installed on the front of the protection block. Two first sealing rings are arranged in the middle of the inner wall of the recirculation pipe. A second sealing ring is installed at the front end of the inner wall of the protection block. A water pump is arranged at the back of the recirculation pipe. A water suction pipe is connected to one side of the water pump. A water tank is installed at the lower end of the right side of the protection box. An installation block is installed on the right side of the protection block. A feeding port is installed on the right side of the installation block;

[0010] A water filling rack is arranged inside the protection box. A plurality of communicating ring pipes are installed on the front of the protection box. An outlet is installed at the upper right end of the front of the protection box. An air outlet is arranged at the top of the protection box. A plurality of H-shaped fins are arranged on the inner wall of the water filling rack.

[0011] As a preferred solution of the present utility model, the protection box is detachably connected to both the outlet and the water inlet. The water inlet is threadedly connected to the water pipe, and is detachable.

[0012] As a preferred solution of the present utility model, the water inlet is threadedly connected to the recirculation pipe. The recirculation pipe is threadedly connected to the connection flange. The sealing cylinder is sleeved on the middle of the outer wall of the recirculation pipe. The sealing cylinder is threadedly connected to the protection block.

[0013] As a preferred solution of the present utility model, both of the two first sealing rings are detachably connected to the recirculation pipe. The protection block is detachably connected to the second sealing ring. The protection block is fixedly connected to the installation block.

[0014] As a preferred solution of the present utility model, the installation block is threadedly connected to the feeding port. The recirculation pipe is threadedly connected to the water pump. The water pump is threadedly connected to the water suction pipe. The water suction pipe is threadedly connected to the water tank.

[0015] As a preferred solution of the present utility model, the protection box is threadedly connected to a plurality of communicating ring pipes. The H-shaped fins are arranged between two adjacent communicating ring pipes and are arranged on the inner wall of the water filling rack.

[0016] Beneficial effects

[0017] Compared with the prior art, the present utility model has the following beneficial effects:

[0018] 1. The economizer with H-shaped fins conveys the cold water in the water tank to the recirculation pipeline through the arranged water extraction pipe, and transports it to the water filling rack through the water inlet and the water conveying pipe for use. When the water supply stops, the recirculation door can be opened. The water in the economizer rises due to the small density caused by heat and enters the steam drum. The water in the steam drum can be continuously supplemented into the economizer through the recirculation pipeline to form a natural circulation, taking away heat and protecting the economizer. The arranged connecting flange can improve the connection sealing performance of the water inlet and the recirculation pipeline. The two arranged first sealing rings can improve the sealing performance between the sealing cylinder, the first sealing ring and the protective block. The arranged feeding port can add nanoparticles into the cold water in the recirculation pipeline. Adding nanoparticles into cold water can change the physical properties of the fluid, thereby increasing the heat transfer coefficient and making the heat more effectively transferred from the flue gas to the feed water. At the same time, the addition of nanoparticles can enhance the thermal stability of the fluid, reduce the fouling and corrosion problems under high-temperature conditions, thereby prolonging the service life of the economizer and facilitating use. Brief Description of the Drawings

[0019] Figure 1 is the overall structural schematic diagram of the present utility model;

[0020] Figure 2 is the structural schematic diagram of the water outlet of the present utility model;

[0021] Figure 3 is the structural schematic diagram of the heat transfer circulation component of the present utility model.

[0022] In the figure: 1, bottom plate; 2, protective box; 3, water filling rack; 4, communicating annular pipe; 5, heat transfer circulation component; 6, water outlet; 7, gas delivery port; 8, H-shaped fin; 501, water inlet; 502, water conveying pipe; 503, recirculation pipeline; 504, connecting flange; 505, sealing cylinder; 506, first sealing ring; 507, second sealing ring; 508, protective block; 509, mounting block; 510, feeding port; 511, water pump; 512, water extraction pipe; 513, water tank. Detailed Embodiments

[0023] In order to make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0024] As Figures 1 - 3 shown, an economizer with H-shaped fins includes a bottom plate 1 and a protective box 2. The protective box 2 is installed on the top of the bottom plate 1, and a heat transfer circulation component 5 is arranged on the outer wall of the protective box 2;

[0025] The heat transfer cycle assembly 5 includes a water inlet 501 provided at the lower right end of the front surface of the protective box 2. A recirculation pipe 503 is installed on the right side surface of the water inlet 501. A connecting flange 504 is installed at the left end of the outer wall of the recirculation pipe 503. A water pipe 502 is connected to the rear of the water inlet 501. A protective block 508 is provided in the middle of the outer wall of the recirculation pipe 503. A sealing cylinder 505 is installed on the front surface of the protective block 508. Two first sealing rings 506 are provided in the middle of the inner wall of the recirculation pipe 503. A second sealing ring 507 is installed at the front end of the inner wall of the protective block 508. A water pump 511 is provided at the rear of the recirculation pipe 503. A water suction pipe 512 is connected to one side of the water pump 511. A water tank 513 is installed at the lower end of the right side surface of the protective box 2. An installation block 509 is installed on the right side surface of the protective block 508. A feeding port 510 is installed on the right side surface of the installation block 509;

[0026] A water storage rack 3 is provided inside the protective box 2. A plurality of communicating ring pipes 4 are installed on the front surface of the protective box 2. An outlet 6 is installed at the upper right end of the front surface of the protective box 2. An air delivery port 7 is provided at the top of the protective box 2. A plurality of H-shaped fins 8 are provided on the inner wall of the water storage rack 3;

[0027] The protective box 2 is detachably connected to both the outlet 6 and the water inlet 501. The water inlet 501 is threadedly connected to the water pipe 502 and is detachable; the water inlet 501 is threadedly connected to the recirculation pipe 503, the recirculation pipe 503 is threadedly connected to the connecting flange 504, the sealing cylinder 505 is sleeved on the middle of the outer wall of the recirculation pipe 503, and the sealing cylinder 505 is threadedly connected to the protective block 508; both of the two first sealing rings 506 are detachably connected to the recirculation pipe 503, the protective block 508 is detachably connected to the second sealing ring 507, and the protective block 508 is fixedly connected to the installation block 509; the installation block 509 is threadedly connected to the feeding port 510, the recirculation pipe 503 is threadedly connected to the water pump 511, the water pump 511 is threadedly connected to the water suction pipe 512, and the water suction pipe 512 is threadedly connected to the water tank 513; the protective box 2 is threadedly connected to the plurality of communicating ring pipes 4, and the H-shaped fins 8 are provided between two adjacent communicating ring pipes 4 and are provided on the inner wall of the water storage rack 3;

[0028] Among them, the cold water in the water tank 513 is conveyed into the recirculation pipeline 503 through the arranged water extraction pipe 512, and is conveyed into the water filling rack 3 through the water inlet 501 and the water conveying pipe 502 for use. When the water supply stops, the recirculation door can be opened. The water in the economizer rises due to the small density caused by heat and enters the steam drum. The water in the steam drum can be continuously supplemented into the economizer through the recirculation pipeline 503 to form a natural circulation, taking away heat and protecting the economizer. The arranged connecting flange 504 can improve the connection sealing performance between the water inlet 501 and the recirculation pipeline 503. The two arranged first sealing rings 506 can improve the sealing performance between the sealing cylinder 505, the first sealing ring 506 and the protective block 508. The arranged feeding port 510 can add nanoparticles into the cold water in the recirculation pipeline 503. Adding nanoparticles into cold water can change the physical properties of the fluid, thereby increasing the heat transfer coefficient and enabling heat to be more effectively transferred from the flue gas to the feed water. At the same time, the addition of nanoparticles can enhance the thermal stability of the fluid, reduce scaling and corrosion problems under high-temperature conditions, and thus extend the service life of the economizer, which is convenient for use.

[0029] It should be noted that the present utility model is an economizer with H-shaped fins. During use, when the boiler does not supply water during the ignition process, by installing the recirculation pipeline 503, under the heating of the flue gas by the economizer, the water temperature in the pipe rises and partial steam is generated. Since the water in the steam drum has a low temperature, does not contain steam, and has a large specific gravity, a circulation loop composed of the steam drum, the recirculation pipeline 503 and multiple connecting ring pipes 4 is formed, preventing the economizer from being damaged by overheating due to no water flowing through. In addition, the economizer recirculation also injects part of the water entering the economizer back into the boiler again, utilizes the remaining heat energy in the boiler to heat the water again, thereby improving the thermal efficiency of the boiler. The water source in the water tank 513 is extracted and conveyed into use through the water extraction pipe 512 by the water pump 511, and cold water is input through the water inlet 501. When the water supply stops, the recirculation door can be opened. The water in the economizer rises due to the small density caused by heat and enters the steam drum. The water in the steam drum can be continuously supplemented into the economizer through the recirculation pipeline 503 to form a natural circulation, taking away heat and protecting the economizer. Nanoparticles are added into the cold water in the recirculation pipeline 503 through the feeding port 510, which can change the physical properties of the fluid, thereby increasing the heat transfer coefficient and enabling heat to be more effectively transferred from the flue gas to the feed water. At the same time, the addition of nanoparticles can enhance the thermal stability of the fluid, reduce scaling and corrosion problems under high-temperature conditions, and thus extend the service life of the economizer, which is convenient for use.

[0030] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A economizer with H-shaped fins, comprising a bottom plate (1) and a protective box (2), characterized in that: A protective box (2) is installed on the top of the bottom plate (1), and a heat transfer circulation component (5) is arranged on the outer wall of the protective box (2); The heat transfer circulation component (5) includes a water inlet (501) arranged at the lower right end of the front of the protective box (2). A recirculation pipe (503) is installed on the right side surface of the water inlet (501). A connecting flange (504) is installed at the left end of the outer wall of the recirculation pipe (503). A water pipe (502) is connected to the back of the water inlet (501). A protective block (508) is arranged in the middle of the outer wall of the recirculation pipe (503). A sealing cylinder (505) is installed on the front of the protective block (508). Two first sealing rings (506) are arranged in the middle of the inner wall of the recirculation pipe (503). A second sealing ring (507) is installed at the front end of the inner wall of the protective block (508). A water pump (511) is arranged at the back of the recirculation pipe (503). A water suction pipe (512) is connected to one side of the water pump (511). A water tank (513) is installed at the lower end of the right side surface of the protective box (2). An installation block (509) is installed on the right side surface of the protective block (508). A feeding port (510) is installed on the right side surface of the installation block (509); A water loading rack (3) is arranged inside the protective box (2). A plurality of communicating ring pipes (4) are installed on the front of the protective box (2). An outlet (6) is installed at the upper right end of the front of the protective box (2). An air delivery port (7) is arranged at the top of the protective box (2). A plurality of H-shaped fins (8) are arranged on the inner wall of the water loading rack (3).

2. The economizer with H-shaped fins according to claim 1, characterized in that: The protective box (2) is detachably connected to both the outlet (6) and the water inlet (501), and the water inlet (501) is threadedly connected to the water pipe (502), which is detachable.

3. The economizer with H-shaped fins according to claim 1, characterized in that: The water inlet (501) is threadedly connected to the recirculation pipe (503), the recirculation pipe (503) is threadedly connected to the connecting flange (504), the sealing cylinder (505) is sleeved on the middle of the outer wall of the recirculation pipe (503), and the sealing cylinder (505) is threadedly connected to the protective block (508).

4. The economizer with H-shaped fins according to claim 1, characterized in that: Both of the two first sealing rings (506) are detachably connected to the recirculation pipe (503), the protective block (508) is detachably connected to the second sealing ring (507), and the protective block (508) is fixedly connected to the installation block (509).

5. The economizer with H-shaped fins according to claim 1, characterized in that: The installation block (509) is threadedly connected to the feeding port (510), the recirculation pipe (503) is threadedly connected to the water pump (511), the water pump (511) is threadedly connected to the water suction pipe (512), and the water suction pipe (512) is threadedly connected to the water tank (513).

6. The economizer with H-shaped fins according to claim 1, characterized in that: The protective box (2) is threadedly connected to the plurality of communicating ring pipes (4), and the H-shaped fins (8) are arranged between two adjacent communicating ring pipes (4) and are arranged on the inner wall of the water loading rack (3).

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