Saturated dual-purpose steam boiler
By designing a multifunctional steam boiler structure and flue gas mixing chamber, the problem of lag when switching steam types in steam boilers was solved, achieving rapid and stable steam switching and improved energy efficiency.
Patent Information
- Application Number
- CN202520398262.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2035-03-10
AI Technical Summary
Existing steam boilers suffer from lag and poor performance when switching between producing saturated steam and superheated steam.
A structure including a first boiler, a second boiler, a steam-water separator, a feedwater pump, a steam generator, and a steam superheater was designed. The production of saturated steam and superheated steam is switched by valve control. Combined with the design of the flue gas mixing chamber and the guide plate, the flue gas can be mixed evenly and switched quickly and stably.
It achieves rapid and stable steam switching, meets production needs, reduces energy consumption, avoids problems such as eddy currents and unstable back pressure, and improves the practicality of steam boilers.
Smart Images
Figure CN223909486U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a steam boiler technical field, concretely relates to a saturated dual-purpose steam boiler. BACKGROUND
[0002] Steam boiler refers to the industrial boiler that heats water to certain parameters and produces high-temperature steam, and its working principle is that fuel is combusted in the furnace, high-temperature flue gas is generated, the flue gas passes through the water pipe in the boiler pipeline to heat the water to boiling, steam is generated, the steam is delivered to the equipment needing heating through the pipeline to complete the heating function, and meanwhile, the water in the boiler is also circulated continuously to ensure the stable operation of the boiler.
[0003] In the prior art, steam boilers are widely used in the production of saturated steam, and boilers that can produce superheated steam are less, and some boilers that can simultaneously produce saturated steam and superheated steam have certain hysteresis in switching between the two kinds of steam and have poor performance. UTILITY MODEL CONTENTS
[0004] In view of the deficiencies of the prior art, the utility model provides a saturated dual-purpose steam boiler that can switch between the production of saturated steam and superheated steam according to production requirements and meet the production requirements.
[0005] The utility model provides the following technical scheme, a saturated dual-purpose steam boiler, comprising: a first boiler, a second boiler, a steam-water separator, a water supply pump, a steam generator and a steam superheater, the water-cooled wall of the steam generator is arranged in the furnace of the first boiler, the steam outlet of the steam generator is connected with the inlet of the steam-water separator through a saturated steam outlet pipe one, the outlet of the steam-water separator is connected with a saturated steam outlet pipe two, the saturated steam outlet pipe two is connected with a saturated steam outlet through a saturated steam outlet pipe three, a valve one is fixedly connected on the saturated steam outlet pipe three, the heating element of the steam superheater is arranged in the furnace of the second boiler, the saturated steam outlet pipe two is connected with the inlet of the heating element through a saturated steam outlet pipe four, a valve two is fixedly connected on the saturated steam outlet pipe four, the outlet of the heating element is connected with a superheated steam outlet through a superheated steam outlet pipe, a valve three and an adjusting valve are fixedly connected on the superheated steam outlet pipe, and the water supply pump is connected with the steam generator and the steam superheater through a water supply pipe.
[0006] As the preferred scheme of the utility model, the first boiler is internally sequentially arranged from bottom to top as a first boiler combustion chamber, a first boiler flue gas passage, a flue gas mixing chamber and a first boiler tail heating surface in communication, and a smoke chimney is arranged on the top of the first boiler.
[0007] As the preferred scheme of the utility model, the outlet of the first boiler flue gas channel is fixedly connected with the first boiler smoke guide plate one in the smoke gas mixing chamber, the smoke passage width formed by the first boiler smoke guide plate one gradually decreases along the first boiler flue gas channel to the first boiler tail heating surface direction, and the outlet of the first boiler smoke guide plate one is provided with a throttle hole.
[0008] As the preferred scheme of the utility model, the bottom of the first boiler tail heating surface is fixedly connected with the first boiler smoke guide plate two in the smoke gas mixing chamber, and the smoke passage width formed by the first boiler smoke guide plate two gradually decreases along the first boiler flue gas channel to the first boiler tail heating surface direction.
[0009] As the preferred scheme of the utility model, the second boiler is internally sequentially provided with the second boiler combustion chamber, the second boiler flue gas channel and the second boiler tail heating surface in communication from bottom to top.
[0010] As the preferred scheme of the utility model, the smoke gas outlet of the second boiler top is connected with the first boiler through a smoke gas pipeline, and a smoke flue butterfly valve is arranged on the smoke gas pipeline.
[0011] The utility model discloses the beneficial effect is: through the first boiler, second boiler, steam generator, steam superheater, steam-water separator and feed water pump set up, steam generator and first boiler are used to produce saturated steam, steam superheater and second boiler are used to heat the heating of steam generator production and form superheated steam, can switch the output of saturated steam and superheated steam according to production demand, the switching of two kinds of steam is quick and stable, satisfies the production demand, improves practicality, the flue gas of second boiler is discharged into the smoke gas mixing chamber of first boiler through the smoke gas pipeline, and the two kinds of uniform smoke gas are mixed in the smoke gas mixing chamber, which helps the heating of water in the steam generator to form saturated steam, reduces energy consumption, prevents the direct collision of two kinds of smoke gas from causing local vortex and causing the problems of unstable back pressure, unstable combustion of the steam generator, steam superheater burner. DRAWINGS
[0012] Fig. 1 It is whole structure schematic view of saturated dual-purpose steam boiler;
[0013] Fig. 2 It is system structure schematic view of saturated dual-purpose steam boiler;
[0014] Fig. 3 It is structure schematic view of steam generator and steam superheater;
[0015] In the figure: 1, first boiler; 101, first boiler combustion chamber; 102, first boiler flue gas passage; 103, first boiler smoke guide plate one; 104, throttle hole; 105, first boiler smoke guide plate two; 106, first boiler tail heating surface; 2, second boiler; 201, second boiler combustion chamber; 202, second boiler flue gas passage; 203, second boiler tail heating surface; 204, flue gas pipeline; 205, flue butterfly valve; 3, steam-water separator; 4, feed water pump; 5, saturated steam outlet pipe one; 6, saturated steam outlet pipe two; 7, saturated steam outlet pipe three; 8, valve one; 9, saturated steam outlet pipe four; 10, valve two; 11, superheated steam outlet pipe; 12, valve three; 13, regulating valve. DETAILED DESCRIPTION
[0016] In order to make the technical problems solved by the utility model, the technical scheme adopted and the technical effects reached more clear, the technical scheme of the embodiments of the utility model will be further described in detail below in combination with the drawings. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the person skilled in the art without making creative labor belong to the protection scope of the utility model.
[0017] Embodiment:
[0018] As Figs. 1 to 3As shown, a kind of saturated dual-purpose steam boiler, including: first boiler 1, second boiler 2, steam-water separator 3, feed water pump 4, steam generator and steam superheater, the water wall of steam generator is arranged in the hearth of first boiler 1, the steam outlet of steam generator is connected with the inlet of steam-water separator 3 by saturated steam outlet pipe one 5, the outlet of steam-water separator 3 is connected with saturated steam outlet pipe two 6, saturated steam outlet pipe two 6 is connected with saturated steam outlet by saturated steam outlet pipe three 7, saturated steam outlet pipe three 7 is fixedly connected with valve one 8, the heating element of steam superheater is arranged in the hearth of second boiler 2, saturated steam outlet pipe two 6 is connected with the inlet of heating element by saturated steam outlet pipe four 9, saturated steam outlet pipe four 9 is fixedly connected with valve two 10, the outlet of heating element is connected with superheated steam outlet by superheated steam outlet pipe 11, superheated steam outlet pipe 11 is fixedly connected with valve three 12 and regulating valve 13, feed water pump 4 is connected with steam generator and steam superheater by feed water pipe, when using, feed water pump 4 works and supplies water for steam generator and steam superheater by feed water pipe, when needing to supply saturated steam, valve one 8 is opened, valve two 10, valve three 12 and regulating valve 13 are closed, saturated steam is generated by steam generator and first boiler 1, saturated steam is transported to steam-water separator 3 by saturated steam outlet pipe one 5, after separating water by steam-water separator 3, saturated steam is sent out from saturated steam outlet by saturated steam outlet pipe two 6 and saturated steam outlet pipe three 7 for use, when needing to supply superheated steam, valve one 8 is closed, valve two 10, valve three 12 and regulating valve 13 are opened, at this time, saturated steam separated by steam-water separator 3 is transported to the heating element of steam superheater by saturated steam outlet pipe four 9, saturated steam is heated to form superheated steam by steam superheater and second boiler 2, and then sent out from superheated steam outlet by superheated steam outlet pipe 11, the dual-purpose steam boiler can switch the output of saturated steam and superheated steam according to production demand, meet production demand, and improve practicability.
[0019] In the embodiment, the first boiler 1 is sequentially provided with a first boiler combustion chamber 101, a first boiler flue gas passage 102, a flue gas mixing chamber and a first boiler tail heating surface 106 from bottom to top in the first boiler 1, and a smoke chimney is arranged at the top of the first boiler 1. The first boiler flue gas passage 102 is designed in a multi-bend type or a spiral type, so as to increase the contact area between the first boiler flue gas passage 102 and the water wall of the steam generator, and improve the heating effect on water. The flue gas generated by the combustion of the steam generator is discharged from the smoke chimney through the first boiler combustion chamber 101, the first boiler flue gas passage 102, the flue gas mixing chamber and the first boiler tail heating surface 106.
[0020] In the embodiment, the outlet of the first boiler flue gas passage 102 is fixedly connected with the first boiler smoke guide plate one 103 in the flue gas mixing chamber, the first boiler smoke guide plate one 103 forms a smoke passage with a width gradually decreasing along the first boiler flue gas passage 102 to the first boiler tail heating surface 106, and the outlet of the first boiler smoke guide plate one 103 is provided with a throttle hole 104, and the first boiler smoke guide plate one 103 helps to guide the flue gas in the first boiler flue gas passage 102 to quickly discharge from the throttle hole 104.
[0021] In the embodiment, the bottom of the first boiler tail heating surface 106 is fixedly connected with the first boiler smoke guide plate two 105 in the flue gas mixing chamber, the first boiler smoke guide plate two 105 forms a smoke passage with a width gradually decreasing along the first boiler flue gas passage 102 to the first boiler tail heating surface 106, and the first boiler smoke guide plate two 105 helps to guide the flue gas in the flue gas mixing chamber to enter the first boiler tail heating surface 106.
[0022] In the embodiment, the second boiler 2 is sequentially provided with the second boiler combustion chamber 201, the second boiler flue gas passage 202 and the second boiler tail heating surface 203 from bottom to top, the flue gas outlet at the top of the second boiler 2 is connected with the first boiler through the flue gas pipeline 204, the flue gas pipeline 204 is provided with the flue gas butterfly valve 205, the flue gas butterfly valve 205 is opened, the steam superheater is combusted to generate the superheated steam by heating the saturated flue gas in the heating element of the steam superheater 2 from the second boiler combustion chamber 201 upward through the second boiler flue gas passage 202 and the second boiler tail heating surface 203, the flue gas is discharged into the flue gas mixing chamber of the first boiler 1 through the flue gas pipeline 204, and then is discharged through the chimney, wherein the second boiler combustion chamber 201 in the second boiler 2 adopts a mode of controlling the temperature by the flame, the temperature of the superheated steam can be accurately controlled, the mode of controlling the superheated temperature by the water injection desuperheater used in the traditional superheater is cancelled, the problem that the water injection desuperheater is prone to causing material fatigue and failure due to cold and hot alternation and causing safety accidents is avoided.
[0023] In the embodiment, the flue gas mixing chamber of the first boiler 1 is divided into an inner chamber and an outer chamber through the first boiler smoke guide plate one 103, the chimney generated in the first boiler 1 is discharged from the inner chamber, the flue gas discharged from the flue gas pipeline 204 of the second boiler 2 enters the outer chamber, the two kinds of flue gas are mixed in the flue gas mixing chamber, which helps to heat the water in the steam generator to form the saturated steam, reduces the energy consumption, and prevents the two kinds of flue gas from directly colliding to cause local vortex and unstable back pressure, and causes the problems of unstable combustion of the steam generator and the steam superheater burner through the design of the inner chamber and the outer chamber.
[0024] When the saturated steam is needed, the valve 8 is opened, the valve 10, the valve 12 and the regulating valve 13 are closed, the saturated steam is generated by the steam generator and the first boiler 1, the saturated steam is delivered into the steam-water separator 3 through the saturated steam outlet pipe 5, the water is separated by the steam-water separator 3, and the saturated steam is delivered from the saturated steam outlet through the saturated steam outlet pipe 6 and the saturated steam outlet pipe 7 for use, when the superheated steam is needed, the valve 8 is closed, the valve 10, the valve 12 and the regulating valve 13 are opened, at this time, the saturated steam separated by the steam-water separator 3 is delivered into the heating element of the steam superheater through the saturated steam outlet pipe 9, the saturated steam is heated to form the superheated steam by the steam superheater and the second boiler 2, and the superheated steam is delivered from the superheated steam outlet through the superheated steam outlet pipe 11, the flue gas of the steam generator is discharged from the exhaust smoke chimney through the first boiler flue gas channel 102, the flue gas mixing chamber and the first boiler tail heating surface 106 upwards from the first boiler combustion chamber 101, the flue gas of the steam superheater is heated to form the superheated steam by the second boiler flue gas channel 202 and the second boiler tail heating surface 203 upwards from the second boiler combustion chamber 201, the saturated flue gas in the heating element of the steam superheater 2 is heated to form the superheated steam, the flue gas is discharged into the flue gas mixing chamber of the first boiler 1 through the flue gas pipe 204, the two kinds of flue gas are mixed and discharged from the exhaust smoke chimney, the dual-purpose steam boiler can switch the output of the saturated steam and the superheated steam according to the production demand, and the production demand is met.
[0025] Although preferred embodiments of the present application have been described, those skilled in the art will be able to make additional changes and modifications without departing from the spirit and scope of the present application. Therefore, the appended claims are intended to cover all such changes and modifications that fall within the scope of the present application.
[0026] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application also intends to include these modifications and variations.
Claims
1. A saturated dual-purpose steam boiler, characterized in that, The utility model relates to a boiler system, which comprises: a first boiler, a second boiler, a steam-water separator, a feed water pump, a steam generator and a steam superheater, the water wall of the steam generator is arranged in the furnace of the first boiler, the steam outlet of the steam generator is connected with the inlet of the steam-water separator through a saturated steam outlet pipe one, the outlet of the steam-water separator is connected with a saturated steam outlet pipe two, the saturated steam outlet pipe two is connected with a saturated steam outlet through a saturated steam outlet pipe three, a valve one is fixedly connected on the saturated steam outlet pipe three, the heating element of the steam superheater is arranged in the furnace of the second boiler, the saturated steam outlet pipe two is connected with the inlet of the heating element through a saturated steam outlet pipe four, a valve two is fixedly connected on the saturated steam outlet pipe four, the outlet of the heating element is connected with a superheated steam outlet through a superheated steam outlet pipe, a valve three and a regulating valve are fixedly connected on the superheated steam outlet pipe, and the feed water pump is connected with the steam generator and the steam superheater through a feed water pipe.
2. A saturated combination steam boiler according to claim 1, characterized in that The first boiler is internally sequentially arranged from bottom to top as a first boiler combustion chamber, a first boiler flue gas passage, a flue gas mixing chamber and a first boiler tail heating surface in communication, and a flue gas chimney is arranged on the top of the first boiler.
3. A saturated combination steam boiler according to claim 2, characterized in that A first boiler smoke guide plate one is fixedly connected at the outlet of the first boiler flue gas passage in the flue gas mixing chamber, the width of the smoke passage formed by the first boiler smoke guide plate one gradually decreases along the first boiler flue gas passage to the first boiler tail heating surface, and a throttling hole is arranged at the outlet of the first boiler smoke guide plate one.
4. A saturated combination steam boiler according to claim 3, characterized in that A first boiler smoke guide plate two is fixedly connected at the bottom of the first boiler tail heating surface in the flue gas mixing chamber, the width of the smoke passage formed by the first boiler smoke guide plate two gradually decreases along the first boiler flue gas passage to the first boiler tail heating surface.
5. A saturated combination steam boiler as claimed in claim 2, wherein The second boiler is internally sequentially arranged from bottom to top as a second boiler combustion chamber, a second boiler flue gas passage and a second boiler tail heating surface in communication.
6. A saturated combination steam boiler according to claim 5, characterized in that The flue gas outlet on the top of the second boiler is connected with the first boiler through a flue gas pipeline, and a flue gas butterfly valve is arranged on the flue gas pipeline.