CN115325521A

CN115325521A - Gas type high-efficiency steam generator

Info

Publication number: CN115325521A
Application number: CN202210788922.8A
Authority: CN
Inventors: 魏喜款
Original assignee: Anhui Shangyi Thermal Energy Co ltd
Current assignee: Anhui Shangyi Thermal Energy Co ltd
Priority date: 2022-07-06
Filing date: 2022-07-06
Publication date: 2022-11-11

Abstract

The invention relates to the technical field of steam generators, in particular to a gas type high-efficiency steam generator, which comprises: the furnace body comprises a hearth, a first heat recovery box, a second heat recovery box and a water tank, wherein the first heat recovery box is fixed on one side of the hearth, the second heat recovery box is fixed on the other side of the hearth, the water tank is fixed at the upper end of the second heat recovery box, and a bracket is arranged on the lower surface of the hearth; the burner connecting pipe penetrates through the second heat recovery box and extends into the hearth, and a fire jet is arranged inside the hearth; the hearth comprises a plurality of water pipes, adjacent water pipes are fixed through outer heat conducting fins, and inner heat conducting fins are arranged on one sides of the outer heat conducting fins; compared with the prior art, the invention can increase the channel length of the waste heat recycling space after combustion, thereby fully utilizing the heat after combustion, shortening the time of subsequent steam production and improving the steam production in unit time.

Description

Gas type high-efficiency steam generator

Technical Field

The invention relates to the technical field of steam generators, in particular to a gas type high-efficiency steam generator.

Background

The steam generator is a heat energy conversion device which heats water flowing in a pipe into steam and rapidly outputs the steam to the outside. The volume and the water capacity of the steam are increased along with the increase of the steam quantity, and the steam belongs to the category of boilers needing special equipment to be incorporated into the national quality and technology supervision and management when the water capacity exceeds 30L. Therefore, in order to ensure the safety of use, the water capacity is generally set within 30L, which results in the limit of the evaporation amount (steam generation amount) thereof.

In the prior art, for better improvement steam generator's steam production efficiency, chinese patent that publication number is CN110410766A discloses a novel below 30L combination formula energy-conserving steam generator, which comprises a furnace body, the furnace body top be equipped with the chimney, furnace body bottom connect and be equipped with the stove leg, the furnace body include outer protective housing and inlayer stainless steel protective housing, inlayer stainless steel protective housing internal connection be equipped with the mount, the mount on top-down install 304 stainless steel fin red copper coil pipe and 304 stainless steel coil pipe, 304 stainless steel fin red copper coil pipe and 304 stainless steel coil pipe between connect through stainless steel bayonet joint, the bottom of inlayer stainless steel protective housing connect and be equipped with the gas fire row. Compared with the prior art, the invention has the advantages that: energy conservation and environmental protection, high conversion speed, high steam pressure after conversion and high temperature.

However, the inventor finds that the above patent still has certain disadvantages in the practical use process, for example, the 304 stainless steel finned red copper coil is added in the path of the rising heat to realize the recycling of the waste heat, however, the rising path is too short, so that the contact time of the rising heat and the 304 stainless steel finned red copper coil is short, the heat exchange effect is not good, and the waste heat utilization effect is not good, and therefore, the invention provides a gas-type high-efficiency steam generator capable of solving the above problems.

Disclosure of Invention

The present invention is directed to a gas-fired high-efficiency steam generator to solve the above-mentioned problems of the related art.

In order to achieve the purpose, the invention provides the following technical scheme: a gas-fired high-efficiency steam generator comprising:

the furnace body comprises a hearth, a first heat recovery box, a second heat recovery box and a water tank, wherein the first heat recovery box is fixed on one side of the hearth, the second heat recovery box is fixed on the other side of the hearth, the water tank is fixed at the upper end of the second heat recovery box, and a bracket is arranged on the lower surface of the hearth;

the burner connecting pipe penetrates through the second heat recovery box and extends into the hearth, and a fire-jet is arranged inside the hearth;

the hearth comprises a plurality of water pipes, the adjacent water pipes are fixed through outer heat conducting sheets, an inner heat conducting sheet is arranged on one side of each outer heat conducting sheet and fixedly connected with the corresponding water pipe, a first water containing cavity is arranged between each outer heat conducting sheet and each inner heat conducting sheet, a fire pipe is arranged inside each water pipe, a second water containing cavity is arranged between each fire pipe and the corresponding water pipe, the first water containing cavity and the second water containing cavity are communicated through water through holes, and a heat return channel is arranged inside each fire pipe.

As a preferable technical scheme of the invention, one end of the burner connecting pipe is fixedly provided with a burner.

As a preferable technical solution of the present invention, both end portions between the fire tube and the water tube are provided with seals, the seals are in a circular ring structure, and a sum of capacities of the second water containing cavity and the first water containing cavity is less than 30L.

As a preferable technical scheme of the present invention, an exhaust pipe is installed on an inner wall of a top portion of the second heat recovery tank, the exhaust pipe is communicated with a heat recovery channel in the fire pipe through the second heat recovery tank, and an upper end of the exhaust pipe penetrates through a side wall of the water tank.

As a preferable technical scheme of the invention, a steam drum is fixedly arranged at the upper end of the hearth through a steam pipe, and a steam pipe and a safety valve are arranged at the upper end of the steam drum.

As a preferable technical scheme, the lower surface of the furnace body is provided with a base, the upper surface of the base is provided with an outer box, and the furnace body is arranged in the outer box.

As a preferable technical scheme, a water level meter is arranged outside the outer box and is communicated with the hearth and the steam drum.

As a preferred technical scheme, a drain pipe and a water inlet pipe are arranged at the bottom of the hearth, a water inlet and a drain outlet are arranged on one side of the outer portion of the hearth, the drain pipe is communicated with the drain outlet, the water inlet pipe is communicated with the water inlet, a cold water inlet pipe and a cold water outlet pipe are arranged on one side of the water tank, and the cold water outlet pipe is communicated with the water inlet through a connecting water pipe.

As a preferable technical scheme, the section of the hearth is in an arc structure, and a plurality of water pipes are uniformly distributed on the hearth at equal intervals.

As a preferable technical scheme of the invention, the section of the hearth is in an inverted V-shaped structure, a plurality of water pipes are distributed on the hearth in a dense-top-sparse-bottom structure, a lifting plate is arranged at the bottom of the hearth, and the lower end of the lifting plate is fixed on a bracket.

Compared with the prior art, the invention has the beneficial effects that:

according to the gas-type high-efficiency steam generator, the hearth with the inner heat conducting fin, the outer heat conducting fin, the first water containing cavity, the fire tube, the second water containing cavity, the water through hole and the heat return channel is arranged, the channel length of a waste heat recycling space after combustion can be increased, so that the heat after combustion can be fully utilized, the second heat return box and the exhaust pipe are arranged on the water tank, the waste heat recycling effect of hot gas can be further improved, water in the water tank before heating can be preheated in advance, the time for subsequent steam output is shortened, and the steam yield in unit time is improved.

Additional features and advantages of the invention will be set forth in the detailed description which follows.

Drawings

FIG. 1 is a schematic structural view of a furnace body of the present invention;

FIG. 2 is a schematic structural view of a furnace body according to another aspect of the present invention;

FIG. 3 is a cross-sectional view of the present invention;

FIG. 4 is a schematic view of a partial structure of the furnace of the present invention;

FIG. 5 is a schematic view showing a connection structure of a second heat recovery tank, a water tank and a burner connecting pipe according to the present invention;

FIG. 6 is a schematic view of the overall structure of the present invention;

FIG. 7 is a front view of a furnace according to a first embodiment of the present invention;

FIG. 8 is a front view of a furnace according to a second embodiment of the present invention;

in the figure: 1. a furnace body; 2. a hearth; 3. a first heat recovery tank; 4. a second heat recovery tank; 5. a water tank; 6. a steam drum; 7. a burner connection pipe; 8. a steam pipe; 9. a bracket; 10. a water pipe; 11. an inner heat-conducting fin; 12. an outer heat-conducting fin; 13. a first water containing cavity; 14. a fire tube; 15. a second water containing cavity; 16. a water through hole; 17. a heat return channel; 18. an exhaust pipe; 19. a flame port; 20. a base; 21. an outer box; 22. a heat-insulating layer; 23. a steam pipe; 24. a safety valve; 25. cold water inlet pipe; 26. a cold water outlet pipe; 27. a water inlet; 28. a sewage draining outlet; 29. a blow-off pipe; 30. a water inlet pipe; 31. a water level gauge; the plate is lifted 32.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "vertical", "upper", "lower", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and operate, and thus, should not be construed as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.

The first embodiment is as follows:

referring to fig. 1-7, the present invention provides a technical solution: a gas-fired high-efficiency steam generator comprising:

the furnace body 1 comprises a hearth 2, a first heat recovery box 3, a second heat recovery box 4 and a water tank 5, wherein the first heat recovery box 3 is fixed on one side of the hearth 2, the second heat recovery box 4 is fixed on the other side of the hearth 2, the water tank 5 is fixed at the upper end of the second heat recovery box 4, and a bracket 9 is arranged on the lower surface of the hearth 2;

the burner connecting pipe 7 penetrates through the second heat recovery box 4 and extends into the hearth 2, and a fire-jet 19 is arranged inside the hearth 2;

wherein, furnace 2 includes a plurality of water pipe 10, and is fixed mutually through outer conducting strip 12 between the adjacent water pipe 10, and one side of outer conducting strip 12 is equipped with interior conducting strip 11, interior conducting strip 11 and water pipe 10 fixed connection are equipped with first appearance water cavity 13 between outer conducting strip 12 and the interior conducting strip 11, and the inside of every water pipe 10 all is equipped with firetube 14, is equipped with second appearance water cavity 15 between firetube 14 and the water pipe 10, and is linked together through limbers 16 between first appearance water cavity 13 and the second appearance water cavity 15, and the inside of firetube 14 is equipped with back heat way 17, and the one end fixed mounting of combustor connecting pipe 7 has the combustor, installs the combustor on combustor connecting pipe 7, opens the combustor, can make flame that spouts 19 departments of fire mouth appear high temperature flame, can heat furnace 2.

In the present invention, both ends between the fire tube 14 and the water tube 10 are provided with seals, and the seals are in a circular ring structure, so that the fire tube 14 is not communicated with the water tube 10, thereby preventing mutual interference between hot air and water.

In the present invention, the sum of the capacities of the second water containing chamber 15 and the first water containing chamber 13 is less than 30L.

In the invention, an exhaust pipe 18 is arranged on the inner wall of the top of the second heat recovery box 4, the exhaust pipe 18 is communicated with a heat recovery channel 17 in the fire tube 14 through the second heat recovery box 4, and the upper end of the exhaust pipe 18 penetrates through one side wall of the water tank 5.

According to the invention, the steam drum 6 is fixedly arranged at the upper end of the hearth 2 through the steam pipe 8, the steam pipe 23 and the safety valve 24 are arranged at the upper end of the steam drum 6, the heat preservation layer 22 is arranged on the outer surface of the hearth 2, and the heat of the hearth 2 is effectively prevented from overflowing through the heat preservation layer 22, so that a good energy-saving effect is achieved.

In the present invention, a base 20 is provided on the lower surface of the furnace body 1, an outer box 21 is provided on the upper surface of the base 20, and the furnace body 1 is provided inside the outer box 21.

In the invention, the water level gauge 31 is arranged outside the outer box 21, the water level gauge 31 is communicated with the hearth 2 and the steam drum 6, and the water level inside the steam generator can be penetrated by the water level gauge 31.

According to the invention, the bottom of the hearth 2 is provided with the sewage discharge pipe 29 and the water inlet pipe 30, the outer side of the hearth 2 is provided with the water inlet 27 and the sewage discharge port 28, the sewage discharge pipe 29 is communicated with the sewage discharge port 28, the water inlet pipe 30 is communicated with the water inlet 27, one side of the water tank 5 is provided with the cold water inlet pipe 25 and the cold water outlet pipe 26, the cold water outlet pipe 26 is communicated with the water inlet 27 through the connecting water pipe, when the hearth 2 is not used, sewage remained for a long time in the hearth 2 can be discharged by utilizing the sewage discharge pipe 29 and the sewage discharge port 28, and water in the water tank 5 can be conveyed into the hearth 2 through the water inlet pipe 30 and the water inlet 27.

When the steam generator is used, the burner is arranged on the burner connecting pipe 7, the burner is started, high-temperature flame can appear at the fire spraying port 19, so that water in the first water containing cavity 13 and the second water containing cavity 15 in the hearth 2 can be heated, the combusted hot gas enters the first heat recovery tank 3 and enters the fire tubes 14 through the ports of the fire tubes 14, the high-temperature hot gas flowing in the fire tubes 14 can heat the water in the second water containing cavity 15 in the water pipe 10, the long and uniformly distributed fire tubes 14 can respectively perform good heating treatment on each second water containing cavity 15, the waste heat recycling effect of the hot gas is greatly improved, the steam production of the steam generator is greatly improved, the hot gas enters the second heat recovery tank 4 again, the bottom of the upper water tank 5 can be heated, and the hot gas can pass through the inside the water tank 5 when being discharged through the exhaust pipe 18, the water in the water tank 5 can be further heated, so that the purpose of preheating water in advance is achieved, the time required by effective water preheating is shortened, and the unit time of the steam generator is improved;

in this embodiment, furnace 2's cross sectional shape is the arc structure, and a plurality of water pipe 10 equidistance evenly distributed is on furnace 2, can be abundant recycle high temperature steam to promote the steam production of steam generator in the unit interval.

Example two:

referring to fig. 1-6 and fig. 8, the present invention provides a technical solution: on the basis of the first embodiment, the shape of the hearth 2 in the first embodiment is changed, specifically: the section of the hearth 2 is in an inverted V-shaped structure, a plurality of water pipes 10 are distributed on the hearth 2 in an upper-close and lower-sparse structure, a lifting plate 32 is arranged at the bottom of the hearth 2, and the lower end of the lifting plate 32 is fixed on the bracket 9.

In this embodiment, the sectional shape of the furnace 2 is an inverted V-shaped structure, the distance between the furnace 2 and the lower combustion flame can be set more reasonably, and the water pipes 10 are distributed on the furnace 2 in a dense-top-sparse-bottom structure, the bottom of the furnace 2 is provided with the lifting plate 32, the lower end of the lifting plate 32 is fixed on the bracket 9, more water pipes 10 are arranged in the upper high-temperature region, so that the heat in the upper higher-temperature region can be well absorbed, the heat in the lower-temperature region can be absorbed by the water pipes with less water, thereby realizing reasonable distribution of heat conduction, further improving the evaporation effect of water, increasing the steam yield of the steam generator in unit time, and preventing the dangerous situation that the water pipes 10 in the upper region are too low to cause burnthrough due to over-low position through the arrangement of the lifting plate 32, and the use safety is high.

It is worth noting that: the whole device realizes control over the device through the master control button, and because the equipment matched with the control button is common equipment, the device belongs to the prior mature technology, and the electrical connection relation and the specific circuit structure of the device are not described any more.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A gas fired high efficiency steam generator comprising:

the furnace body (1) comprises a hearth (2), a first heat recovery box (3), a second heat recovery box (4) and a water tank (5), wherein the first heat recovery box (3) is fixed on one side of the hearth (2), the second heat recovery box (4) is fixed on the other side of the hearth (2), the water tank (5) is fixed at the upper end of the second heat recovery box (4), and a bracket (9) is arranged on the lower surface of the hearth (2);

the combustor connecting pipe (7) penetrates through the second heat recovery box (4) and extends into the hearth (2), and a fire jet (19) is arranged inside the hearth (2);

the hearth (2) comprises a plurality of water pipes (10), the adjacent water pipes (10) are fixed through outer heat conducting fins (12), an inner heat conducting fin (11) is arranged on one side of the outer heat conducting fin (12), the inner heat conducting fin (11) is fixedly connected with the water pipes (10), a first water containing cavity (13) is arranged between the outer heat conducting fin (12) and the inner heat conducting fin (11), a fire tube (14) is arranged inside each water pipe (10), a second water containing cavity (15) is arranged between the fire tube (14) and the water pipes (10), the first water containing cavity (13) is communicated with the second water containing cavity (15) through a water through hole (16), and a heat return channel (17) is arranged inside the fire tube (14).

2. A gas type high-efficiency steam generator according to claim 1, wherein a burner is fixedly installed at one end of the burner connecting pipe (7).

3. The gas-fired high-efficiency steam generator as claimed in claim 1, wherein both ends between the fire tube (14) and the water tube (10) are provided with seals, the seals are in the shape of a circular ring, and the sum of the capacities of the second water containing cavity (15) and the first water containing cavity (13) is less than 30L.

4. A gas type high-efficiency steam generator as set forth in claim 1, wherein an exhaust pipe (18) is installed on the top inner wall of the second heat recovery tank (4), and the exhaust pipe (18) is communicated with the heat recovery duct (17) in the fire tube (14) through the second heat recovery tank (4), and the upper end of the exhaust pipe (18) penetrates through a side wall of the water tank (5).

5. A gas type high-efficiency steam generator according to claim 1, wherein the upper end of the furnace chamber (2) is fixedly provided with a steam drum (6) through a steam pipe (8), and the upper end of the steam drum (6) is provided with a steam pipe (23) and a safety valve (24).

6. The gas-fired high-efficiency steam generator according to claim 5, wherein the lower surface of the furnace body (1) is provided with a base (20), the upper surface of the base (20) is provided with an outer box (21), and the furnace body (1) is arranged inside the outer box (21).

7. A gas type high-efficiency steam generator according to claim 6, wherein a water level gauge (31) is provided outside the outer box (21), and the water level gauge (31) is communicated with both the boiler chamber (2) and the steam drum (6).

8. The gas-fired high-efficiency steam generator as claimed in claim 1, wherein a drain pipe (29) and a water inlet pipe (30) are provided at the bottom of the furnace (2), a water inlet (27) and a drain outlet (28) are provided at one side of the outside of the furnace (2), the drain pipe (29) is communicated with the drain outlet (28), the water inlet pipe (30) is communicated with the water inlet (27), a cold water inlet pipe (25) and a cold water outlet pipe (26) are provided at one side of the water tank (5), and the cold water outlet pipe (26) is communicated with the water inlet (27) through a connecting water pipe.

9. A gas type high efficiency steam generator as set forth in claim 1, wherein said furnace (2) has an arc-shaped cross-sectional shape, and a plurality of said water tubes (10) are equally spaced and uniformly distributed on said furnace (2).

10. The gas-fired high-efficiency steam generator according to claim 1, wherein the sectional shape of the furnace (2) is an inverted V-shaped structure, a plurality of water pipes (10) are distributed on the furnace (2) in a dense-top and sparse-bottom structure, a lifting plate (32) is arranged at the bottom of the furnace (2), and the lower end of the lifting plate (32) is fixed on the bracket (9).