CN216667653U - Atomization desuperheater assisted by external steam - Google Patents
Atomization desuperheater assisted by external steam Download PDFInfo
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- CN216667653U CN216667653U CN202123121346.1U CN202123121346U CN216667653U CN 216667653 U CN216667653 U CN 216667653U CN 202123121346 U CN202123121346 U CN 202123121346U CN 216667653 U CN216667653 U CN 216667653U
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Abstract
The utility model provides an external steam auxiliary atomization desuperheater, which comprises an external auxiliary steam valve body, a throttling orifice plate, a desuperheating water valve body and a Venturi nozzle which are sequentially arranged; an auxiliary steam pipeline is inserted into the side surface of the external auxiliary steam valve body; a temperature-reducing water pipeline is inserted into the side surface of the temperature-reducing water valve body; the external steam auxiliary atomization desuperheater is simple in structure and convenient to use, and when external auxiliary steam passes through the orifice plate, the circulating drift diameter is reduced, so that the external auxiliary steam is pressurized and the flow rate is increased; and the venturi nozzle can improve the atomization effect of external auxiliary steam and desuperheating water and improve the flow rate of atomized steam.
Description
Technical Field
The utility model relates to the technical field of desuperheaters, in particular to an external steam auxiliary atomization desuperheater.
Background
In the existing high-pressure superheated steam desuperheater, desuperheating water is high-pressure desuperheating water which is atomized by a nozzle and enters a high-pressure superheated steam pipeline, so that the desuperheating effect is achieved.
In the existing system, the desuperheater has high pressure, poor atomization effect and low steam flow rate, and the desuperheater needs longer time for complete mixing, so that the distance between a straight pipe section and a temperature measuring point is greatly lengthened, and the pipeline arrangement is difficult; the nozzle is easy to generate cavitation or flash evaporation due to larger pressure difference under the condition of long-time use, and the service life of the nozzle is shortened.
Disclosure of Invention
The utility model aims to overcome the defects in the prior art and provides the external steam auxiliary atomization desuperheater which is simple in structure and convenient to use, and not only can improve the atomization effect of external auxiliary steam and desuperheating water, but also can improve the flow rate of atomized steam.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an external steam auxiliary atomization desuperheater comprises an external auxiliary steam valve body, a throttling orifice plate, a desuperheating water valve body and a Venturi nozzle which are sequentially arranged; an auxiliary steam pipeline is inserted into the side surface of the external auxiliary steam valve body; and a temperature reducing water pipeline is inserted into the side surface of the temperature reducing water valve body.
Preferably, an external auxiliary steam inlet is arranged at one end, close to the throttling orifice plate, of the venturi nozzle, and an annular spiral atomization hole communicated to the external auxiliary steam inlet is formed in the side wall of the venturi nozzle in an inward inclined manner; one end of the Venturi nozzle, which is far away from the throttling orifice plate, is provided with a Venturi diffusion section communicated to the external auxiliary steam inlet; the external auxiliary steam inlet is embedded in the desuperheating water valve body, and a desuperheating water annular flow passage is arranged between the desuperheating water valve body and the external auxiliary steam inlet; the temperature-reducing water annular flow passage is communicated with the temperature-reducing water pipeline.
Preferably, the annular helical atomizing orifice is inclined toward the direction close to the venturi divergent section.
Preferably, the venturi nozzle and the desuperheating water valve body are fixedly connected through threads.
Preferably, an external auxiliary steam cavity and an auxiliary steam accelerating runner which are communicated with each other are arranged in the external auxiliary steam valve body; the external auxiliary steam cavity is communicated with the auxiliary steam pipeline.
Preferably, the accelerating flow passage comprises a first flow passage and a second flow passage which are communicated with each other; the cross-sectional area of one end, close to the external auxiliary steam cavity, of the first flow channel is equal to that of the external auxiliary steam cavity; the cross-sectional area of one end of the first flow passage, which is close to the second flow passage, is equal to that of the second flow passage; the cross-sectional area of the second flow channel is smaller than that of the external auxiliary steam cavity; the cross-sectional area from one end of the first flow channel close to the external auxiliary steam cavity to one end of the first flow channel close to the second flow channel is gradually reduced.
Preferably, an accumulation groove is formed in one end, close to the external auxiliary steam valve body, of the throttle orifice plate, and a plurality of throttle orifices penetrating through the throttle orifice plate are formed in the bottom of the accumulation groove.
The utility model has the beneficial effects that: the external steam auxiliary atomization desuperheater is simple in structure and convenient to use, and when external auxiliary steam passes through the orifice plate, the circulating drift diameter is reduced, so that the external auxiliary steam is pressurized and the flow rate is increased; and the venturi nozzle can improve the atomization effect of external auxiliary steam and desuperheating water and improve the flow rate of atomized steam.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure, 1-external auxiliary steam valve body, 11-external auxiliary steam cavity, 12-auxiliary steam accelerating flow channel, 121-first flow channel, 122-second flow channel, 2-temperature reducing water valve body, 21-temperature reducing water annular flow channel, 3-throttling pore plate, 31-gathering groove, 4-Venturi nozzle, 41-external auxiliary steam inlet, 42-annular spiral atomizing hole, 43-Venturi diffusion section, 5-auxiliary steam pipeline and 6-temperature reducing water pipeline.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings and embodiments, and it is to be understood 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.
As shown in fig. 1: an external steam auxiliary atomization desuperheater comprises an external auxiliary steam valve body 1, a throttling orifice plate 3, a desuperheating water valve body 2 and a Venturi nozzle 4 which are sequentially arranged; an auxiliary steam pipeline 5 is inserted into the side surface of the external auxiliary steam valve body 1; a temperature reducing water pipeline 6 is inserted into the side surface of the temperature reducing water valve body 2.
According to the utility model, through the throttle orifice 3, when external auxiliary steam passes through the throttle orifice 3, the circulating drift diameter is reduced, so that the external auxiliary steam is pressurized and the flow rate is increased; the venturi nozzle 4 can improve the atomization effect of external auxiliary steam and desuperheating water and can also improve the flow velocity of atomized steam.
Furthermore, an external auxiliary steam inlet 41 is arranged at one end of the venturi nozzle 4 close to the orifice plate 3, and an annular spiral atomization hole 42 communicated to the external auxiliary steam inlet 41 is formed in the side wall of the venturi nozzle 4 in an inward inclined manner; one end of the Venturi nozzle 4, which is far away from the throttling orifice plate 3, is provided with a Venturi diffusion section 43 communicated to the external auxiliary steam inlet 41; the external auxiliary steam inlet 41 is embedded in the desuperheating water valve body 2, and a desuperheating water annular flow passage 21 is formed between the desuperheating water valve body 2 and the external auxiliary steam inlet 41; the temperature-reducing water annular flow passage 21 is communicated with the temperature-reducing water pipeline 6.
The venturi nozzle 4 is provided with an annular spiral atomization hole 42, external auxiliary steam enters the external auxiliary steam inlet 41 through the throttling hole plate 3, is mixed with the desuperheating water sprayed around the external auxiliary steam inlet 41, and then is sprayed out from the venturi diffusion section 43 to obtain high-speed unsaturated steam, and then is mixed with the superheated steam in the pipeline so as to control the temperature of the superheated steam.
Further, the annular spiral atomization holes 42 are inclined toward the venturi divergent section 43.
Annular spiral atomizing hole 42 is in venturi nozzle 4's circumference evenly distributed, outside supplementary steam is in venturi nozzle 4 outside supplementary steam inlet 41 mixes with the desuperheating water to will heat to the outer supplementary steam process of wet saturation through the desuperheating water venturi diffuser 43 blowout.
Furthermore, the venturi nozzle 4 is fixedly connected with the temperature-reducing water valve body 2 through threads.
Through threaded connection, the connecting structure not only has a better connecting effect, but also can ensure better sealing performance; and the connection between the Venturi nozzle 4 and the temperature-reducing water valve body 2 can be strengthened by welding.
Further, an external auxiliary steam cavity 11 and an auxiliary steam accelerating runner 12 which are communicated with each other are arranged in the external auxiliary steam valve body 1; the external auxiliary steam cavity 11 is communicated with the auxiliary steam pipeline 5.
The flow of the external auxiliary steam is accelerated through the acceleration channel 12.
Further, the acceleration flow path 12 includes a first flow path 121 and a second flow path 122 which communicate with each other; the cross-sectional area of one end of the first flow channel 121 close to the external auxiliary steam cavity 11 is equal to that of the external auxiliary steam cavity 11; the cross-sectional area of one end of the first flow channel 121 close to the second flow channel 122 is equal to that of the second flow channel 122; and the cross-sectional area of the second flow passage 122 is smaller than that of the external auxiliary steam cavity 11; the cross-sectional area of the first flow channel 121 from the end close to the external auxiliary steam cavity 11 to the end of the first flow channel 121 close to the second flow channel 122 is gradually reduced.
Furthermore, an accumulation groove 31 is formed at one end of the orifice plate 3 close to the external auxiliary steam valve body 1, and a plurality of orifices penetrating through the orifice plate 3 are formed at the bottom of the accumulation groove 31.
The working principle of the utility model is as follows:
the external auxiliary steam flows in from the auxiliary steam pipe 5, flows to the acceleration runner 12 through the external auxiliary steam cavity 11, increases the flow rate of the external auxiliary steam, then is pressurized through the throttle orifice 3 and further increases the flow rate, and the pressurized and accelerated external auxiliary steam flows into the external auxiliary steam inlet 41.
Desuperheating water flows to desuperheating water annular flow channel 21 through desuperheating water pipeline 6 and then through annular spiral atomization hole 42 blowout, make desuperheating water tentatively disperse and become rotatory tiny water smoke, outside auxiliary atomization steam through outside auxiliary steam entry 41 mixes with desuperheating water smoke, have extremely tiny water smoke and flow to venturi diffuser 43 in the steam after mixing, angle grow is dispersed to the steam through venturi diffuser 43, can with steam pipeline steam intensive mixing, reach the temperature of accurate control oversteam.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; 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 in specific cases to those skilled in the art.
Finally, it should be noted that the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention is described in detail with reference to examples, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.
Claims (7)
1. An outside steam-assisted atomization desuperheater, characterized in that: comprises an external auxiliary steam valve body (1), a throttle orifice plate (3), a desuperheating water valve body (2) and a Venturi nozzle (4) which are arranged in sequence; an auxiliary steam pipeline (5) is inserted into the side surface of the external auxiliary steam valve body (1); a temperature reducing water pipeline (6) is inserted into the side surface of the temperature reducing water valve body (2).
2. The external steam assisted atomizing desuperheater of claim 1, wherein: an external auxiliary steam inlet (41) is formed in one end, close to the throttling orifice plate (3), of the Venturi nozzle (4), and an annular spiral atomizing hole (42) communicated to the external auxiliary steam inlet (41) is formed in the side wall of the Venturi nozzle (4) in an inwards inclined mode; one end of the Venturi nozzle (4) departing from the throttling orifice plate (3) is provided with a Venturi diffusion section (43) communicated to the external auxiliary steam inlet (41); the external auxiliary steam inlet (41) is embedded in the desuperheating water valve body (2), and a desuperheating water annular flow passage (21) is formed between the desuperheating water valve body (2) and the external auxiliary steam inlet (41); the temperature-reducing water annular flow passage (21) is communicated with the temperature-reducing water pipeline (6).
3. The external steam assisted atomizing desuperheater of claim 2, wherein: the annular spiral atomization hole (42) is inclined towards the direction close to the Venturi diffusion section (43).
4. An external steam assisted atomizing desuperheater according to claim 2, wherein: the venturi nozzle (4) is fixedly connected with the desuperheating water valve body (2) through threads.
5. The external steam assisted atomizing desuperheater of claim 1, wherein: an external auxiliary steam cavity (11) and an auxiliary steam accelerating flow channel (12) which are communicated with each other are arranged in the external auxiliary steam valve body (1); the external auxiliary steam cavity (11) is communicated with the auxiliary steam pipeline (5).
6. The external steam assisted atomizing desuperheater of claim 5, wherein: the accelerating flow channel (12) comprises a first flow channel (121) and a second flow channel (122) which are communicated with each other; the cross-sectional area of one end, close to the external auxiliary steam cavity (11), of the first flow channel (121) is equal to that of the external auxiliary steam cavity (11); the cross-sectional area of one end of the first flow passage (121) close to the second flow passage (122) is equal to that of the second flow passage (122); and the cross-sectional area of the second flow channel (122) is smaller than the cross-sectional area of the external auxiliary steam cavity (11); the cross-sectional area between one end of the first flow channel (121) close to the external auxiliary steam cavity (11) and one end of the first flow channel (121) close to the second flow channel (122) is gradually reduced.
7. The external steam assisted atomizing desuperheater of claim 1, wherein: one end of the throttle orifice plate (3) close to the external auxiliary steam valve body (1) is provided with an accumulation groove (31), and the bottom of the accumulation groove (31) is provided with a plurality of throttle orifices penetrating through the throttle orifice plate (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123121346.1U CN216667653U (en) | 2021-12-13 | 2021-12-13 | Atomization desuperheater assisted by external steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123121346.1U CN216667653U (en) | 2021-12-13 | 2021-12-13 | Atomization desuperheater assisted by external steam |
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| Publication Number | Publication Date |
|---|---|
| CN216667653U true CN216667653U (en) | 2022-06-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202123121346.1U Active CN216667653U (en) | 2021-12-13 | 2021-12-13 | Atomization desuperheater assisted by external steam |
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| CN (1) | CN216667653U (en) |
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2021
- 2021-12-13 CN CN202123121346.1U patent/CN216667653U/en active Active
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