Heat exchange device for boiler

Abstract

The utility model belongs to the technical field of boiler heat exchange, and particularly relates to a heat exchange device for a boiler, which comprises a heat exchange box, a plurality of groups of heat exchange pipes arranged inside the heat exchange box, an air inlet pipe arranged on one side of the heat exchange box, a water pipe arranged inside the heat exchange pipes, a water inlet pipe arranged on the top of one side of the heat exchange box, and a drain pipe arranged at the bottom of the other side of the heat exchange box. The water inlet pipe and the water outlet pipe are both fixedly provided with communicating pipes, the heat exchange box comprises an outer shell, the outer shell is internally provided with an inner shell, and the front end and the rear end of the heat exchange box are respectively provided with a box door in a hinged mode. The heat exchange time of smoke in the heat exchange pipe is prolonged, heat transfer is more thorough, the heat exchange efficiency is improved, the better heat exchange effect is achieved, heat insulation is conducted through the heat insulation pad, heat loss is reduced, the temperature in the heat exchange box is kept high all the time, and the heat exchange efficiency is further improved.

Description

Technical Field

[0001] This utility model relates to the field of boiler heat exchange technology, specifically a heat exchange device for boilers. Background Technology

[0002] A boiler is an energy conversion device. The energy input to a boiler includes the chemical energy of fuel and electrical energy. The boiler outputs steam, high-temperature water or organic heat carrier with a certain amount of thermal energy. The original meaning of "boiler" refers to a water-filled container heated over a fire, while "furnace" refers to the place where fuel is burned. When a boiler is running, it will generate a large amount of hot air. In order to make better use of the heat, heat exchange devices are generally chosen to recover and utilize the heat.

[0003] The existing technology has the following shortcomings;

[0004] When existing heat exchange devices are in use, although the hot gas generated in the boiler combustion chamber has a certain heating effect on the water in the heat exchange device, the short travel distance of the flue gas and the small contact area between the flue gas and the heat exchange device result in poor heat exchange efficiency. As a result, the discharged flue gas still contains a large amount of heat energy, leading to energy waste. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present invention provides a heat exchange device for boilers to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a heat exchange device for a boiler, comprising a heat exchange box, wherein multiple sets of heat exchange tubes are provided inside the heat exchange box, an air inlet pipe is provided on one side of the heat exchange box, a water pipe is provided inside the heat exchange tubes, a water inlet pipe is provided at the top of one side of the heat exchange box, and a drain pipe is provided at the bottom of the other side of the heat exchange box, and a connecting pipe is fixedly installed on both the water inlet pipe and the drain pipe.

[0007] As a preferred embodiment of the present invention, the heat exchange box includes an outer shell, and an inner shell is provided inside the outer shell. Box doors are respectively hinged to the front and rear ends of the heat exchange box.

[0008] As a preferred embodiment of this utility model, heat insulation pads are fixedly installed between the outer shell and the inner shell, as well as inside the door.

[0009] As a preferred embodiment of this utility model, both the heat exchange tube and the water pipe are arranged in a serpentine pattern, and a spirally arranged baffle is fixedly installed between the heat exchange tube and the water pipe.

[0010] As a preferred technical solution of this utility model, the end of the air inlet pipe near the heat exchange box is separated into multiple groups corresponding to the position of the heat exchange tube, and one end of the heat exchange tube extends to the outside of the heat exchange box and is fixedly connected to the air inlet pipe. The other end of the heat exchange tube extends to the outside of the heat exchange box and is fixedly installed with an exhaust pipe. A first regulating valve is fixedly installed on both the air inlet pipe and the exhaust pipe.

[0011] As a preferred embodiment of this utility model, two sets of first fixing blocks are fixedly installed on the top of one side of the heat exchange box, the water inlet pipe is fixedly installed between the two sets of first fixing blocks, two sets of second fixing blocks are fixedly installed on the bottom of the other side of the heat exchange box, and the drain pipe is fixedly installed between the two sets of fixing blocks.

[0012] As a preferred embodiment of this utility model, a connecting pipe is fixedly installed between the water pipe and the inlet pipe and the outlet pipe, a second regulating valve is fixedly installed on the connecting pipe, and the inlet pipe is connected to an external water source.

[0013] Compared with the prior art, the present invention provides a heat exchange device for boilers, which has the following advantages:

[0014] 1. This boiler heat exchange device, by setting up baffles, guides the flue gas between the heat exchange tube and the water tube through spiral baffles, increases the heat exchange time of the flue gas inside the heat exchange tube, makes the heat transfer more thorough, thereby improving the heat exchange efficiency and achieving a better heat exchange effect. Insulation is provided by heat insulation pads to reduce heat loss and keep the temperature inside the heat exchange box at a high temperature, thereby further improving the heat exchange efficiency.

[0015] 2. This boiler heat exchange device transmits the hot air generated by the boiler to the interior of multiple heat exchange tubes through the air inlet pipe, and injects natural water into the interior of the water tubes through the water inlet pipe. When the water inside the water tubes is heated to a certain temperature by setting a second regulating valve, the second regulating valve at one end of the drain pipe is opened to discharge the heated water. Then, the second regulating valve at one end of the water inlet pipe is opened to add natural water, and an air valve is set to prevent excessive pressure inside the water tubes. Attached Figure Description

[0016] Figure 1 This is a cross-sectional structural diagram of the present invention;

[0017] Figure 2 This is a three-dimensional structural diagram of the present invention;

[0018] Figure 3 This is a schematic diagram of the internal structure of this utility model;

[0019] Figure 4 This is a schematic diagram of the heat exchange tube structure of this utility model.

[0020] In the diagram: 1. Heat exchanger box; 101. Outer shell; 102. Inner shell; 103. Heat insulation pad; 2. Heat exchange tube; 201. Baffle plate; 3. Air inlet pipe; 4. Exhaust pipe; 5. First regulating valve; 6. Water pipe; 601. Water inlet pipe; 602. Drain pipe; 603. Connecting pipe; 604. Second regulating valve; 605. Connecting pipe; 7. Box door; 8. First fixing block; 9. Second fixing block; 10. Air valve. Detailed Implementation

[0021] 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.

[0022] Please see Figure 1-4 In this embodiment: a heat exchange device for a boiler includes a heat exchange box 1, the heat exchange box 1 is provided with multiple sets of heat exchange tubes 2 inside, an air inlet pipe 3 is provided on one side of the heat exchange box 1, a water pipe 6 is provided inside the heat exchange tubes 2, a water inlet pipe 601 is provided on the top of one side of the heat exchange box 1, and a drain pipe 602 is provided on the bottom of the other side of the heat exchange box 1. A connecting pipe 605 is fixedly installed on both the water inlet pipe 601 and the drain pipe 602.

[0023] In this embodiment, the heat exchange box includes an outer shell, the heat exchange box 1 includes an outer shell 101, the inner shell 102 is provided inside the outer shell 101, and the front and rear ends of the heat exchange box 1 are respectively hinged to install box doors 7.

[0024] In this embodiment, heat insulation pads 103 are fixedly installed between the outer shell 101 and the inner shell 102, as well as inside the door 7. The heat insulation pads 103 provide insulation, reducing heat loss and keeping the temperature inside the heat exchange box 1 at a high level, thereby further improving the heat exchange efficiency.

[0025] In this embodiment, both the heat exchange tube 2 and the water pipe 6 are arranged in a serpentine pattern. A spirally arranged baffle 201 is fixedly installed between the heat exchange tube 2 and the water pipe 6. The flue gas between the heat exchange tube 2 and the water pipe 6 is guided by the spirally arranged baffle 201, which increases the heat exchange time of the flue gas inside the heat exchange tube 2, thereby improving the heat exchange efficiency and achieving a better heat exchange effect.

[0026] In this embodiment, the end of the air inlet pipe 3 near the heat exchange box 1 is separated into multiple sets corresponding to the position of the heat exchange pipe 2, and one end of the heat exchange pipe 2 extends to the outside of the heat exchange box 1 and is fixedly connected to the air inlet pipe 3. The other end of the heat exchange pipe 2 extends to the outside of the heat exchange box 1 and is fixedly installed with the exhaust pipe 4. The first regulating valve 5 is fixedly installed on both the air inlet pipe 3 and the exhaust pipe 4.

[0027] In this embodiment, two sets of first fixing blocks 8 are fixedly installed on the top of one side of the heat exchange box 1, and the water inlet pipe 601 is fixedly installed between the two sets of first fixing blocks 8. Two sets of second fixing blocks 9 are fixedly installed on the bottom of the other side of the heat exchange box 1, and the drain pipe 602 is fixedly installed between the two sets of fixing blocks 9.

[0028] In this embodiment, connecting pipes 603 are fixedly installed between water pipe 6 and inlet pipe 601 and outlet pipe 602. A second regulating valve 604 is fixedly installed on the connecting pipe 603. Inlet pipe 601 is connected to an external water source. Hot air generated by the boiler is transferred to the interior of multiple heat exchange tubes 2 through air inlet pipe 3. Natural water is injected into water pipe 6 through inlet pipe 601. When the water inside water pipe 6 is heated to a certain temperature by setting the second regulating valve 604, the second regulating valve 604 at one end of outlet pipe 602 is opened to discharge the heated water. Then, the second regulating valve 604 at one end of inlet pipe 601 is opened to add natural water. An air valve 10 is set to prevent excessive pressure inside water pipe 6.

[0029] The working principle and usage process of this utility model are as follows: The hot air generated by the boiler is transferred to the interior of multiple heat exchange tubes 2 through the air inlet pipe 3, and natural water is injected into the interior of the water pipe 6 through the water inlet pipe 601. At this time, the hot air generated by the boiler is transferred inside the heat exchange tubes 2, and the flue gas between the heat exchange tubes 2 and the water pipe 6 is guided by the spirally arranged baffles 201, which increases the heat exchange time of the flue gas inside the heat exchange tubes 2, thereby improving the heat exchange efficiency and achieving a better heat exchange effect. At the same time, the heat insulation pad 103 provides insulation to reduce heat loss and keep the temperature inside the heat exchange box 1 at a high temperature, thereby further improving the heat exchange efficiency.

[0030] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A heat exchange device for a boiler, characterized in that: The device includes a heat exchange box (1), which has multiple sets of heat exchange tubes (2) inside. An air inlet pipe (3) is provided on one side of the heat exchange box (1), and a water pipe (6) is provided inside the heat exchange tubes (2). A water inlet pipe (601) is provided on the top of one side of the heat exchange box (1), and a drain pipe (602) is provided on the bottom of the other side of the heat exchange box (1). A connecting pipe (605) is fixedly installed on both the water inlet pipe (601) and the drain pipe (602).

2. The heat exchange device for a boiler according to claim 1, characterized in that: The heat exchange box (1) includes an outer shell (101), and an inner shell (102) is provided inside the outer shell (101). Box doors (7) are respectively hinged to the front and rear ends of the heat exchange box (1).

3. A heat exchange device for a boiler according to claim 2, characterized in that: Heat insulation pads (103) are fixedly installed between the outer shell (101) and the inner shell (102) as well as inside the door (7).

4. A heat exchange device for a boiler according to claim 1, characterized in that: Both the heat exchange tube (2) and the water pipe (6) are arranged in a serpentine pattern, and a spirally arranged baffle (201) is fixedly installed between the heat exchange tube (2) and the water pipe (6).

5. A heat exchange device for a boiler according to claim 1, characterized in that: The intake pipe (3) is separated into multiple sets at the end of the heat exchange box (1) corresponding to the position of the heat exchange pipe (2). One end of the heat exchange pipe (2) extends to the outside of the heat exchange box (1) and is fixedly connected to the intake pipe (3). The other end of the heat exchange pipe (2) extends to the outside of the heat exchange box (1) and is fixedly installed with the exhaust pipe (4). The first regulating valve (5) is fixedly installed on both the intake pipe (3) and the exhaust pipe (4).

6. A heat exchange device for a boiler according to claim 1, characterized in that: Two sets of first fixing blocks (8) are fixedly installed on the top of one side of the heat exchange box (1), the water inlet pipe (601) is fixedly installed between the two sets of first fixing blocks (8), two sets of second fixing blocks (9) are fixedly installed on the bottom of the other side of the heat exchange box (1), and the drain pipe (602) is fixedly installed between the two sets of second fixing blocks (9).

7. A heat exchange device for a boiler according to claim 1, characterized in that: A connecting pipe (603) is fixedly installed between the water pipe (6), the inlet pipe (601), and the outlet pipe (602). A second regulating valve (604) is fixedly installed on the connecting pipe (603), and the inlet pipe (601) is connected to an external water source.

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