Tubular steam generator

Abstract

The utility model belongs to the technical field of evaporators, and particularly relates to a tubular steam generator which is characterized in that treated water is introduced into a horizontal combustion tank body, an operating air blower discharges air into the horizontal combustion tank body from an air inlet pipe, and under high-temperature combustion, internal water vapor is evaporated and internal oxygen is heated out; steam enters the ascending pipe under the action of hot pressing and sequentially penetrates through the two sets of filter boxes along the ascending pipe, so that impurities in the steam are filtered, meanwhile, the booster pump on the outer side is started, high-temperature steam is introduced into the spiral heat exchange pipe from the connecting pipe, the retention time of the high-temperature steam in the spiral heat exchange pipe can be prolonged through the spiral heat exchange pipe, and then the cooling effect is improved; after steam cooling is completed, the rotating speed of the booster pump can be continuously increased, liquefied water drops remaining on the inner wall of the spiral heat exchange pipe are blown into an external separator, and the steam-water separation effect is completed; the spiral finned tube with the spiral fins can strengthen heat transfer, reduce flow resistance and accelerate the heat dissipation effect of high-temperature steam.

Description

Technical Field

[0001] The utility model belongs to the technical field of evaporators, and in particular relates to a tubular steam generator. Background Art

[0002] The evaporator is mainly composed of two parts: the heating chamber and the evaporation chamber. The heating chamber provides the heat required for evaporation to the liquid, causing the liquid to boil and vaporize; the evaporation chamber completely separates the vapor and liquid, and the heating chamber injects the hot vapor into the separator.

[0003] After searching, the publication number: CN219510762U discloses a tubular steam generator. In the utility model, biomass fuel is supplied from a hopper through a feed pipe into a combustion chamber for combustion, and the generated flue gas goes up. Under the obstruction of the partition, the high-temperature flue gas goes up along the one-way flow channel and continuously crosses the flue gas channel horizontally. The flue gas flow is long and can fully exchange heat with the water in the heat exchange unit, so that the water is heated and vaporized to form steam that goes up into the steam box and then supplies air to the outside through the steam outlet. Since the flue gas and water have been repeatedly deflected, the heat exchange between the two is sufficient. However, this device is a vertical steam boiler structure, and its steam generation rate is slow, which makes the heat exchange insufficient and causes the water pipe to be easily scaled, thereby reducing the air outlet effect.

[0004] Therefore, a tubular steam generator is designed to solve the above problems. Utility Model Content

[0005] To solve the problems raised in the above background technology. The utility model provides a tubular steam generator. When the device is in use, the treated water can be passed into the horizontal combustion tank body, and the running blower discharges the air from the air inlet pipe into the horizontal combustion tank body. Under high-temperature combustion, the internal water vapor evaporates and heats out the internal oxygen. The steam enters the ascending pipe under the action of heat pressure and passes through two groups of filter boxes in sequence along the ascending pipe, thereby filtering impurities in the steam. At the same time, the external booster pump is started, and the high-temperature steam is passed from the connecting pipe into the spiral heat exchange tube. The spiral heat exchange tube can increase the retention time of the high-temperature steam inside, thereby improving the cooling effect.

[0006] The anti-collision shell surrounds the outside of the spiral heat exchange tube for protection. The electromagnetic exhaust valve can control the flow of steam entering the spiral heat exchange tube. After the steam is cooled, the speed of the booster pump can be increased to blow the liquefied water droplets remaining on the inner wall of the spiral heat exchange tube into the external separator to complete the steam-water separation effect and prevent the structure; the spiral finned tube with spiral fins can enhance heat transfer, reduce flow resistance, and accelerate the heat dissipation effect of high-temperature steam, and the filter cover plate can absorb impurities in the steam on the micropores of the cover plate. When the booster pump stops, the impurities enter the ash tank along the discharge pipe to complete the impurity collection, thereby achieving the effect of purifying the high-temperature steam.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tubular steam generator, including an anti-scaling evaporator, the anti-scaling evaporator includes a horizontal combustion tank body, an ascending pipe, a filter box, a blower, an air intake pipe and a spiral heat exchange tube, the output end of the blower is fixedly connected to one side of the air intake pipe, the outer side of the air intake pipe is fixedly connected to the air intake end of the horizontal combustion tank body, the ascending pipe is fixedly connected to the top of the horizontal combustion tank body, the middle part of the filter box is welded and fixed to one side of the ascending pipe, and the spiral heat exchange tube is arranged on the outer side of the horizontal combustion tank body.

[0008] As a preferred embodiment of the tubular steam generator of the utility model, two groups of spiral heat exchange tubes are provided, and the two groups of spiral heat exchange tubes are symmetrically distributed on the outer side of the ascending tube.

[0009] As a preferred tubular steam generator of the utility model, spiral finned tubes and filter cover plates are further provided inside the filter box, the spiral finned tubes are arranged at equal intervals inside the filter box, and the filter cover plates are threadedly connected to both sides of the filter box.

[0010] As a preferred tubular steam generator of the utility model, a discharge pipe and an ash tank are further provided at the bottom of the filter box, the discharge pipe is fixedly connected to the bottom of the filter box, and the ash tank is fixedly connected to the bottom of the discharge pipe.

[0011] As a preferred tubular steam generator of the utility model, a booster pump and a connecting pipe are also provided on the outer side of the top of the ascending tube, the output end of the booster pump is fixedly connected to one side of the connecting pipe, and the outer side of the connecting pipe is fixedly connected to one end of the spiral heat exchange tube.

[0012] As a preferred embodiment of the tubular steam generator of the utility model, an electromagnetic exhaust valve is also clamped on the outer side of the connecting pipe.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. In the utility model, treated water is introduced into the horizontal combustion tank body, and the running blower discharges air from the air inlet pipe into the horizontal combustion tank body. Under high-temperature combustion, the internal water vapor evaporates and heats out the internal oxygen. The steam enters the ascending pipe under the action of heat pressure and passes through two groups of filter boxes in sequence along the ascending pipe, thereby filtering impurities in the steam. At the same time, the outer booster pump is started, and the high-temperature steam is introduced from the connecting pipe into the spiral heat exchange tube. The spiral heat exchange tube can increase the retention time of the high-temperature steam inside, thereby improving the cooling effect.

[0015] 2. In the utility model, after the steam is cooled, the speed of the booster pump can be increased to blow the liquefied water droplets remaining on the inner wall of the spiral heat exchange tube into the external separator to achieve the steam-water separation effect; the spiral fin tube with spiral fins can enhance heat transfer, reduce flow resistance, and accelerate the heat dissipation effect of high-temperature steam, and the filter cover plate can absorb impurities in the steam on the micropores of the cover plate. When the booster pump is stopped, the impurities enter the ash tank along the discharge pipe to complete the impurity collection, thereby achieving the effect of purifying the high-temperature steam. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a distribution diagram of the discharge pipe and ash tank in the utility model;

[0019] Figure 3 It is a cross-sectional view of the interior of the filter box in the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the spiral heat exchange tube in the utility model;

[0021] In the figure:

[0022] 1. Anti-scaling evaporator; 11. Horizontal combustion tank; 12. Upward pipe; 13. Filter box; 14. Blower; 15. Inlet pipe; 16. Spiral heat exchange tube; 2. Spiral fin tube; 3. Filter cover plate; 4. Discharge pipe; 5. Ash tank; 6. Booster pump; 7. Connecting pipe; 8. Solenoid exhaust valve; 9. Anti-collision shell. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1 As shown:

[0025] A tubular steam generator is disclosed in CN219510762U. Biomass fuel is supplied from a hopper through a feed pipe into a combustion chamber for combustion. The generated flue gas goes up. Under the obstruction of a baffle, the high-temperature flue gas goes up along a one-way flow channel and continuously crosses the flue gas channel horizontally. The flue gas flow is long and can fully exchange heat with water in a heat exchange unit, so that the water is heated and vaporized to form steam that goes up into a steam box and then is supplied to the outside through a steam outlet. Since both the flue gas and water have been repeatedly deflected, the heat exchange between the two is sufficient. However, this device is a vertical steam boiler structure, and its steam generation rate is slow, so that the heat exchange is insufficient and the water pipe is prone to scaling, thereby reducing the air outlet effect. On this basis, an anti-scaling evaporator 1 is added.

[0026] like Figure 1 , Figure 2 and Figure 4 As shown:

[0027] In an optional embodiment: the anti-scaling evaporator 1 includes a horizontal combustion tank body 11, an ascending pipe 12, a filter box 13, a blower 14, an air intake pipe 15 and a spiral heat exchange tube 16, the output end of the blower 14 is fixedly connected to one side of the air intake pipe 15, the outer side of the air intake pipe 15 is fixedly connected to the air intake end of the horizontal combustion tank body 11, the ascending pipe 12 is fixedly connected to the top of the horizontal combustion tank body 11, the middle part of the filter box 13 is welded and fixed to one side of the ascending pipe 12, the spiral heat exchange tube 16 is arranged on the outer side of the horizontal combustion tank body 11, the outer side of the connecting pipe 7 is also clamped with an electromagnetic exhaust valve 8, two groups of spiral heat exchange tubes 16 are arranged, and the two groups of spiral heat exchange tubes 16 are symmetrically distributed on the outer side of the ascending pipe 12.

[0028] In this embodiment: when the device is in use, the treated water can be passed into the horizontal combustion tank body 11, and the running blower 14 discharges air from the air inlet pipe 15 into the horizontal combustion tank body 11. Under high-temperature combustion, the internal water vapor evaporates and heats out the internal oxygen. The steam enters the ascending pipe 12 under the action of heat pressure and passes through the two groups of filter boxes 13 in sequence along the ascending pipe 12, thereby filtering impurities in the steam. At the same time, the outer booster pump 6 is started, and the high-temperature steam is passed from the connecting pipe 7 into the spiral heat exchange tube 16. The spiral heat exchange tube can increase the residence time of the high-temperature steam inside, thereby improving the cooling effect.

[0029] More specifically:

[0030] like Figure 1 and Figure 3 As shown:

[0031] In an optional embodiment: spiral fin tubes 2 and filter cover plates 3 are also provided inside the filter box 13, the spiral fin tubes 2 are arranged at equal intervals inside the filter box 13, the filter cover plates 3 are threadedly connected to both sides of the filter box 13, and a discharge pipe 4 and an ash tank 5 are also provided at the bottom of the filter box 13, the discharge pipe 4 is fixedly connected to the bottom of the filter box 13, and the ash tank 5 is fixedly connected to the bottom of the discharge pipe 4, and a booster pump 6 and a connecting pipe 7 are also provided on the outer side of the top of the ascending pipe 12, the output end of the booster pump 6 is fixedly connected to one side of the connecting pipe 7, and the outer side of the connecting pipe 7 is fixedly connected to one end of the spiral heat exchange tube 16.

[0032] In this embodiment: the anti-collision shell 9 surrounds the outside of the spiral heat exchange tube 16 for protection, and the electromagnetic exhaust valve 8 can control the flow rate of steam entering the spiral heat exchange tube 16. After the steam is cooled, the speed of the booster pump 6 can be further increased to blow the liquefied water droplets remaining on the inner wall of the spiral heat exchange tube 16 into the external separator to complete the steam-water separation effect and prevent the structure; the spiral finned tube 2 with spiral fins can enhance heat transfer, reduce flow resistance, and accelerate the heat dissipation effect of high-temperature steam, and the filter cover plate 3 can absorb impurities in the steam on the cover plate micropores. When the booster pump 6 stops, the impurities enter the ash tank 5 along the discharge pipe 4 to complete the impurity collection, thereby achieving the effect of purifying the high-temperature steam.

[0033] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A tubular steam generator, comprising an anti-fouling evaporator (1), characterized in that: The anti-scaling evaporator (1) comprises a horizontal combustion tank body (11), an ascending pipe (12), a filter box (13), a blower (14), an air intake pipe (15) and a spiral heat exchange tube (16), wherein the output end of the blower (14) is fixedly connected to one side of the air intake pipe (15), the outer side of the air intake pipe (15) is fixedly connected to the air intake end of the horizontal combustion tank body (11), the ascending pipe (12) is fixedly connected to the top of the horizontal combustion tank body (11), the middle part of the filter box (13) is welded and fixed to one side of the ascending pipe (12), and the spiral heat exchange tube (16) is arranged on the outer side of the horizontal combustion tank body (11).

2. The tubular steam generator according to claim 1, characterized in that: The spiral heat exchange tubes (16) are provided in two groups, and the two groups of spiral heat exchange tubes (16) are symmetrically distributed on the outer side of the ascending tube (12).

3. The tubular steam generator according to claim 1, characterized in that: The filter box (13) is further provided with spiral fin tubes (2) and a filter cover plate (3), wherein the spiral fin tubes (2) are arranged at equal intervals inside the filter box (13), and the filter cover plate (3) is threadedly connected to both sides of the filter box (13).

4. The tubular steam generator according to claim 3, characterized in that: A discharge pipe (4) and an ash tank (5) are also provided at the bottom of the filter box (13); the discharge pipe (4) is fixedly connected to the bottom of the filter box (13); and the ash tank (5) is fixedly connected to the bottom of the discharge pipe (4).

5. The tubular steam generator according to claim 1, characterized in that: A booster pump (6) and a connecting pipe (7) are also provided on the outer side of the top of the ascending pipe (12); the output end of the booster pump (6) is fixedly connected to one side of the connecting pipe (7); and the outer side of the connecting pipe (7) is fixedly connected to one end of the spiral heat exchange tube (16).

6. The tubular steam generator according to claim 5, characterized in that: An electromagnetic exhaust valve (8) is also clamped on the outer side of the connecting pipe (7).

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