A device for uniformizing the heat load in a heating furnace

Abstract

The present application relates to the technical field of heating furnace, disclose a kind of fire tube heating furnace in-furnace heat load uniform device, including shell, the shell left end is provided with combustion shell, the combustion shell is built-in and is equipped with burner, the shell is equidistant and is equipped with first temperature sensor, second temperature sensor and third temperature sensor, the wall of the shell is from inside to outside and is provided with burn-resistant layer, two groups of temperature insulation layer clamping hot melt line and shell layer, the shell right side is equipped with blast shell, the blast shell left side is equipped with blast fan in.The first temperature sensor, second temperature sensor, third temperature sensor of equidistant distribution, the temperature of shell is divided into three spaces, when second temperature sensor detects that temperature reaches threshold range, by the power adjustment of blast fan, so that combustion core area forms movement, it is favorable to avoid high temperature area in fire tube heating furnace long time in the same area, so that its burn-resistant layer is rapidly aged.

Description

Technical Field

[0001] This invention relates to the field of heating furnace technology, specifically to a device for uniformly distributing heat load inside a fire-tube heating furnace. Background Technology

[0002] Existing fire-tube heating furnaces are prone to uneven heat load, resulting in fixed high-temperature load areas. This leads to rapid aging of the inner wall of the high-load area, eventually causing damage and major fires. Current fire-tube heating furnaces struggle to achieve more even internal heat load and lack effective monitoring of the inner wall integrity. By the time problems are discovered, accidents have already occurred.

[0003] Therefore, our fire tube heating furnace heat load uniformity device helps to prevent the high temperature area inside the fire tube heating furnace from being in the same area for a long time, which would cause the refractory layer to age rapidly. It also helps to detect the fire tube inner wall damage in time when the fire tube inner wall is damaged and shut off the combustion state in time, so as to avoid major fire accidents caused by fire tube burn-through or corrosion. Summary of the Invention

[0004] The purpose of this invention is to provide a device for uniform heat load inside a fire-tube heating furnace, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a device for uniform heat load inside a fire-tube heating furnace, comprising a shell, a combustion shell disposed at the left end of the shell, a burner installed inside the combustion shell, a first temperature sensor, a second temperature sensor and a third temperature sensor equidistantly installed on the shell, a fire-resistant layer, two sets of heat insulation layers sandwiching a heat-melting line and an outer shell layer disposed on the wall of the shell from the inside out, a blower shell installed on the right side of the shell, and a blower installed on the left side inside the blower shell.

[0006] In a preferred embodiment of the present invention, the signal output terminals of the first temperature sensor, the second temperature sensor, and the third temperature sensor are connected to the signal input terminal of the microcontroller corresponding to the blower.

[0007] In a preferred embodiment of the present invention, the hot melt wire is composed of several groups of equally spaced cylindrical components, and terminal blocks are symmetrically connected to the left and right sides of the hot melt wire. The signal output terminal of the hot melt wire is connected to the signal input terminal of the microcontroller corresponding to the burner.

[0008] In a preferred embodiment of the present invention, a smoke pipe is provided in the middle of the top of the housing, and a smoke cap is provided on the top of the smoke pipe.

[0009] In a preferred embodiment of the present invention, a heat-resistant layer is bonded to the left side of the inner wall of the housing.

[0010] In a preferred embodiment of the present invention, a safety valve is provided on the left side of the top of the housing, and a pressure gauge is provided on the right side of the top of the housing.

[0011] In a preferred embodiment of the present invention, the signal output terminal of the pressure gauge is connected to the signal input terminal of the safety valve.

[0012] In a preferred embodiment of the present invention, supports are provided at equal intervals at the bottom of the outer wall of the housing.

[0013] In a preferred embodiment of the present invention, a manhole is provided on the right side of the bottom end of the housing, and a drain valve is provided in the middle of the bottom of the housing, the drain valve being connected to the internal cavity of the housing.

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

[0015] 1. This invention, through the arrangement of a first temperature sensor, a second temperature sensor, a third temperature sensor, and a blower, divides the shell temperature into three spaces by the equidistantly distributed first, second, and third temperature sensors. When the second temperature sensor detects that the temperature has reached the threshold range, the power of the blower is adjusted to make the combustion core area move. This helps to prevent the high-temperature area in the fire tube heating furnace from being in the same area for a long time, thus preventing the rapid aging of its heat-resistant layer.

[0016] 2. By setting up a hot melt line, a fire-resistant layer and a heat insulation layer, when the fire-resistant layer is damaged, heat passes through the fire-resistant layer and the heat insulation layer, causing the hot melt line to melt and break. The burner is then shut down by breaking the circuit of the hot melt line. This is beneficial for timely detection of the fire tube inner wall damage when there is a problem of burn-through, so as to shut down the combustion state in time and avoid major fire accidents caused by fire tube burn-through or corrosion. Attached Figure Description

[0017] Other features, objects, and advantages of the present invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0018] Figure 1 This is a schematic diagram of the overall structure of a heat load uniformization device inside a fire tube heating furnace according to the present invention.

[0019] Figure 2 This is a schematic diagram of the overall internal structure of a heat load uniformization device inside a fire tube heating furnace according to the present invention.

[0020] Figure 3 This is a schematic diagram of the overall internal heat-melting line structure of a device for uniform heat load inside a fire tube heating furnace according to the present invention.

[0021] Figure 4This is a schematic diagram of the wall structure of a device for uniform heat load inside a fire tube heating furnace according to the present invention;

[0022] Figure 5 This is a schematic diagram of the blower shell structure of a device for uniformly distributing heat load inside a fire-tube heating furnace according to the present invention.

[0023] In the diagram: 1. Shell; 2. Smoke pipe; 3. Blower shell; 4. Combustion shell; 5. Burner; 6. Heat-resistant layer; 7. First temperature sensor; 8. Second temperature sensor; 9. Third temperature sensor; 10. Blower; 11. Hot melt wire; 12. Terminal block; 13. Drain valve; 14. Manhole; 15. Safety valve; 16. Pressure gauge; 17. Support; 18. Burn-resistant layer; 19. Insulation layer; 20. Outer shell layer. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0025] In the description of this invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. In the description of this invention, it should be noted that unless otherwise explicitly specified and limited, the terms "installed," "connected," and "set up" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0026] Please see Figure 1-5 This invention provides a technical solution: a device for uniform heat load inside a fire tube heating furnace, comprising a shell 1, a combustion shell 4 at the left end of the shell 1, a burner 5 installed inside the combustion shell 4, through which external combustion gas enters the shell 1 and is ignited by the burner 5, a first temperature sensor 7, a second temperature sensor 8 and a third temperature sensor 9 are installed at equal intervals on the shell 1, the actual number and distance of which need to be adjusted according to the actual length of the shell 1, the wall of the shell 1 is provided with a fire-resistant layer 18, two sets of heat insulation layers 19 sandwiching a hot melt line 11 and an outer shell layer 20 from the inside to the outside, a blower shell 3 is installed on the right side of the shell 1, and a blower 10 is installed on the left side inside the blower shell 3;

[0027] The temperature of the shell 1 is divided into three spaces by the first temperature sensor 7, the second temperature sensor 8, and the third temperature sensor 9, which are distributed at equal intervals. When the second temperature sensor 8 detects that the temperature has reached the threshold range, the power of the blower 10 is adjusted to make the combustion core area move, so as to avoid the high temperature area in the fire tube heating furnace being in the same area for a long time, which would cause the refractory layer 18 to age rapidly. When the refractory layer 18 is damaged, heat passes through the refractory layer 18 and the heat insulation layer, causing the hot melt line 11 to melt and break. The burner 5 is then shut down by breaking the hot melt line 11. When the inner wall of the fire tube is burned through, the fire tube is promptly detected and the combustion state is shut down in time to avoid major fire accidents caused by fire tube burn-out or corrosion.

[0028] In this embodiment, the signal output terminals of the first temperature sensor 7, the second temperature sensor 8, and the third temperature sensor 9 are connected to the signal input terminal of the microcontroller corresponding to the blower 10.

[0029] The temperature of the housing 1 is divided into three spaces by the first temperature sensor 7, the second temperature sensor 8, and the third temperature sensor 9. The detection range of the first temperature sensor 7, the second temperature sensor 8, and the third temperature sensor 9 is used to detect the area segment of the housing 1.

[0030] In this embodiment, the hot melt wire 11 is a number of groups equally distributed in a cylindrical shape, and the hot melt wire 11 is symmetrically connected to the left and right sides of the hot melt wire 11 with a terminal frame 12. The signal output terminal of the hot melt wire 11 is connected to the signal input terminal of the microcontroller corresponding to the burner 5.

[0031] The hot-melt wires 11 serve as the wire body, and their number needs to be adjusted according to the size of the housing 1. The hot-melt wires 11 are connected to the terminal frame 12 for fixation. When any hot-melt wire 11 is burned through to form an open circuit, the microcontroller converts the open circuit signal to shut down the burner 5.

[0032] In this embodiment, a smoke pipe 2 is provided in the middle of the top of the housing 1, and a smoke cap is provided on the top of the smoke pipe 2;

[0033] The flue gas inside the casing 1 is discharged through the flue pipe 2, and the flue gas is blocked by the smoke cap.

[0034] In this embodiment, a heat-resistant layer 6 is bonded to the left side of the inner wall of the housing 1;

[0035] The heat-resistant layer 6 can be made of quartz sand. The heat-resistant layer 6 prevents heat from damaging the inner wall of the shell 1 and improves the service life.

[0036] In this embodiment, a safety valve 15 is provided on the left side of the top end of the housing 1, and a pressure gauge 16 is provided on the right side of the top end of the housing 1;

[0037] The pressure inside the housing 1 is detected by pressure gauge 16, and the safety valve 15 opens when the pressure inside the housing 1 is too high.

[0038] In this embodiment, the signal output terminal of the pressure gauge 16 is connected to the signal input terminal of the safety valve 15;

[0039] Safety valve 15 or explosion-proof disc protects the pressure inside housing 1. When pressure gauge 16 detects that the pressure inside housing 1 is too high, safety valve 15 or explosion-proof disc is activated to release the pressure and prevent the pressure inside housing 1 from becoming too high and causing danger.

[0040] In this embodiment, supports 17 are provided at equal intervals at the bottom of the outer wall of the housing 1;

[0041] Support 17 can be connected to an external bracket, thereby providing support for support 17 through the bracket.

[0042] In this embodiment, a manhole 14 is provided on the right side of the bottom end of the housing 1, and a drain valve 13 is provided in the middle of the bottom of the housing 1, which is connected to the internal cavity of the housing 1;

[0043] Impurities generated during combustion within the casing 1 can be discharged through the drain valve 13, and waste generated during combustion within the casing 1 can be cleaned through the drain valve 13.

[0044] When using a heat load uniformization device in a fire tube heating furnace, it should be noted that the present invention is a heat load uniformization device in a fire tube heating furnace, and the components are all general standard parts or parts known to those skilled in the art. Its structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods.

[0045] Experimental results of burners using different methods

[0046] Test results of forced draft burner

[0047]

[0048] Test results of atmospheric SR-100S / II type burner

[0049]

[0050]

[0051] In use, external combustion gases enter the housing 1 through the combustion shell 4 and are ignited by the burner 5. The temperature of the housing 1 is divided into three spaces by the equidistantly distributed first temperature sensor 7, second temperature sensor 8, and third temperature sensor 9 (the actual number and distance of the sensors need to be adjusted according to the actual length of the housing 1). When the second temperature sensor 8 detects that the temperature has reached the threshold range, the power of the blower 10 is adjusted to make the combustion core area move, so as to avoid the high temperature area in the furnace being in the same area for a long time, which would cause the resistant layer 18 to age rapidly. When the resistant layer 18 is damaged, heat passes through the resistant layer 18 and the insulation layer, causing the heat fusion line 11 to melt. The burner 5 is shut off by breaking the circuit of the heat fusion line 11. When the inner wall of the fire tube is burned through, the combustion state is shut off in time to avoid major fire accidents caused by the burning or corrosion of the fire tube.

[0052] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0053] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for uniformly distributing heat load inside a fire-tube heating furnace, comprising a shell (1), wherein a combustion shell (4) is provided at the left end of the shell (1), and a burner (5) is installed inside the combustion shell (4), characterized in that: The housing (1) is equidistantly equipped with a first temperature sensor (7), a second temperature sensor (8) and a third temperature sensor (9). The wall of the housing (1) is provided with a heat-resistant layer (18), two sets of heat insulation layers (19) sandwiching a hot melt wire (11) and an outer shell layer (20) from the inside to the outside. A blower shell (3) is installed on the right side of the housing (1), and a blower (10) is installed on the left side inside the blower shell (3). The signal output terminals of the first temperature sensor (7), the second temperature sensor (8) and the third temperature sensor (9) are connected to the signal input terminal of the microcontroller corresponding to the blower (10); The hot melt wire (11) is a number of groups of equally spaced cylindrical components. The hot melt wire (11) is symmetrically connected to the left and right sides by a terminal block (12). The signal output terminal of the hot melt wire (11) is connected to the signal input terminal of the microcontroller corresponding to the burner (5). When the second temperature sensor (8) detects that the temperature has reached the threshold range, the power of the blower (10) is adjusted to make the combustion core area move. A smoke pipe (2) is provided in the middle of the top of the shell (1), and a smoke cap is provided on the top of the smoke pipe (2); A heat-resistant layer (6) is bonded to the left side of the inner wall of the shell (1).

2. The device for uniform heat load inside a fire-tube heating furnace according to claim 1, characterized in that: A safety valve (15) is provided on the left side of the top of the housing (1), and a pressure gauge (16) is provided on the right side of the top of the housing (1).

3. The device for uniform heat load inside a fire-tube heating furnace according to claim 2, characterized in that: The signal output terminal of the pressure gauge (16) is connected to the signal input terminal of the safety valve (15).

4. The device for uniform heat load inside a fire-tube heating furnace according to claim 1, characterized in that: The outer wall of the shell (1) is provided with supports (17) at equal intervals at the bottom.

5. The device for uniform heat load inside a fire-tube heating furnace according to claim 1, characterized in that: A manhole (14) is provided on the right side of the bottom of the housing (1), and a drain valve (13) is provided in the middle of the bottom of the housing (1). The drain valve (13) is connected to the internal cavity of the housing (1).

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