CN213955288U

CN213955288U - Steam desuperheater

Info

Publication number: CN213955288U
Application number: CN202022468338.3U
Authority: CN
Inventors: 闫秦峰; 陈志飞
Original assignee: Nanjing Auto Control Instrument Co ltd
Current assignee: Nanjing Auto Control Instrument Co ltd
Priority date: 2020-10-30
Filing date: 2020-10-30
Publication date: 2021-08-13
Anticipated expiration: 2030-10-30

Abstract

The utility model relates to a steam desuperheater, which comprises a steam pipeline, a water injection pipe, a cyclone pipe, a Venturi tube and a mixing pipe; the steam pipeline is transversely arranged, the Venturi tube is concentrically arranged in the steam pipeline, a cyclone chamber is formed in the middle of the Venturi tube, the cyclone tube is concentrically arranged in the cyclone chamber, a plurality of vertical cyclone holes which are tangent to the inner wall of the cyclone tube are formed in one side of the cyclone tube, the water injection tube is vertically inserted in the steam pipeline, and the mixing tube is concentrically arranged in the steam pipeline and is arranged on the right side of the Venturi tube; the utility model discloses mutually support so that the desuperheating water forms directional whirl with the help of cyclone tube and swirl chamber, and then prolonged the mixing time of desuperheating water and steam, thereby make the desuperheating water atomize completely, accelerate the velocity of flow of steam with the help of venturi simultaneously in order to shorten the contact time of steam and steam conduit inner wall, still avoid the desuperheating water after the atomizing and steam conduit's inner wall direct contact with the help of the hybrid tube in addition, thereby effectively avoided the corruption of steam conduit inner wall with increase of service life, and effectively prevent the emergence of incident.

Description

Steam desuperheater

Technical Field

The utility model relates to a steam desuperheater.

Background

The steam desuperheater is a device commonly adopted in energy-saving engineering, and mixes desuperheating water and high-temperature steam flow with each other, and the desuperheating water absorbs the heat of the high-temperature steam, vaporizes and mixes with the steam, thereby reducing the steam temperature; because the velocity of flow of low pressure high temperature steam is too low, current steam desuperheater is direct to let in the desuperheating water back in the steam conduit, the desuperheating water can't in time atomize, the more residue of liquid desuperheating water is in the steam conduit and corrodes the inner wall of steam conduit, and simultaneously, the atomized desuperheating water also can be because the velocity of flow of steam is too low and with the long-time contact of the inner wall of steam conduit, thereby further corrode the inner wall of steam conduit, this just leads to steam conduit's life shorter, and arouse the incident easily, some need further improvement.

SUMMERY OF THE UTILITY MODEL

To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a steam desuperheater effectively avoids the corruption of steam conduit inner wall with increase of service life to effectively prevent the incident emergence.

The utility model provides a technical scheme that above-mentioned technical problem adopted does: a steam desuperheater is characterized by comprising a steam pipeline, a water injection pipe, a cyclone pipe, a Venturi pipe and a mixing pipe; the steam pipeline is transversely arranged, the Venturi tube is concentrically arranged in the steam pipeline, a cyclone chamber is formed inside the middle part of the Venturi tube, the cyclone tube is concentrically arranged in the cyclone chamber, one side of the cyclone tube is provided with a plurality of vertical cyclone holes tangent to the inner wall of the cyclone tube, the water injection tube is vertically inserted into the steam pipeline, the lower end of the water injection tube is fixedly inserted into the Venturi tube and extends into the cyclone chamber, the upper end of the water injection tube extends out of the upper part of the steam pipeline, the mixing tube is concentrically arranged inside the steam pipeline and is arranged on the right side of the Venturi tube, a closing-in part with the inner diameter gradually reduced from left to right is formed outwards at the left end of the mixing tube, the closing-in part is sleeved outside the right end of the Venturi tube, the end part of the closing-in part is fixed on the inner wall of the steam pipeline, and an expanding part with the inner diameter gradually increased from left to right is formed outwards at the right end of the mixing tube, the end part of the flaring part is fixed on the inner wall of the steam pipeline.

Preferably, the left side of the steam pipeline is further provided with a conical barrel, and the large-diameter end of the conical barrel is fixed at the left end of the steam pipeline.

Preferably, the device further comprises an inlet flange and an outlet flange; the inlet flange is fixed at the small-diameter end of the conical cylinder, and the outlet flange is fixed at the right end of the steam pipeline.

Compared with the prior art, the utility model has the advantages of: the utility model discloses mutually support so that the desuperheating water forms directional whirl with the help of cyclone tube and swirl chamber, and then prolonged the mixing time of desuperheating water and steam, thereby make the desuperheating water atomize completely, accelerate the velocity of flow of steam with the help of venturi simultaneously in order to shorten the desuperheating water after atomizing and the contact time of steam conduit inner wall, still avoid steam and steam conduit's inner wall direct contact with the help of the hybrid tube in addition, thereby effectively avoided the corruption of steam conduit inner wall with increase of service life, and effectively prevent the emergence of incident.

Drawings

Fig. 1 is a sectional structure view of the present invention.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.

As shown in fig. 1, a steam desuperheater comprises a steam pipeline 2, a water injection pipe 4, a cyclone pipe 5, a venturi pipe 6 and a mixing pipe 7; the steam pipeline 2 is transversely arranged, the Venturi tube 6 is concentrically arranged in the steam pipeline 2, a cyclone chamber 61 is formed inside the middle part of the Venturi tube 6, the cyclone tube 5 is concentrically arranged in the cyclone chamber 61, one side of the cyclone tube 5 is provided with a plurality of vertical cyclone holes 51 tangent to the inner wall of the cyclone tube 5, the water injection tube 4 is vertically inserted in the steam pipeline 2, the lower end of the water injection tube 4 is inserted and fixed on the Venturi tube 6 and extends into the cyclone chamber 61, the upper end of the water injection tube 4 extends out of the upper part of the steam pipeline 2, the mixing tube 7 is concentrically arranged inside the steam pipeline 2 and is arranged on the right side of the Venturi tube 6, a closing-in part 71 with the inner diameter gradually reduced from left to right is formed outwards at the left end of the mixing tube 7, the closing-in part 71 is sleeved outside the right end of the Venturi tube 6, the end part of the closing-in part 71 is fixed on the inner wall of the steam pipeline 2, an expanding part 72 with the inner diameter gradually increased from left to right is formed outwards at the right end of the mixing tube 7, the end of the flared portion 72 is fixed to the inner wall of the steam pipe 2.

The left side of the steam pipeline 2 is also provided with a conical cylinder 9, and the large-diameter end of the conical cylinder 9 is fixed at the left end of the steam pipeline 2.

A steam desuperheater also comprises an inlet flange 1 and an outlet flange 3; the inlet flange 1 is fixed at the small diameter end of the conical cylinder 9, and the outlet flange 3 is fixed at the right end of the steam pipeline 2.

The working principle is as follows: low-pressure high-temperature steam enters the conical barrel 9 through the inlet flange 1, then enters the Venturi tube 6 for acceleration and continuously enters the cyclone tube 5 rightwards; at this moment, the desuperheating water is introduced into the cyclone chamber 61 through the water injection pipe 4, and then enters the cyclone pipe 5 through the plurality of cyclone holes 51 and forms a cyclone, the desuperheating water of the cyclone is fully mixed with the low-pressure high-temperature steam, and then the temperature of the low-pressure high-temperature steam is reduced and the moisture of the low-pressure high-temperature steam is supplemented so as to saturate the low-pressure high-temperature steam, then the low-pressure saturated steam after the desuperheating continues to enter the mixing pipe 7 through the closing-in part 71 after accelerating in the venturi tube 6, and finally the low-pressure saturated steam after the desuperheating is discharged outwards through the flaring part 72 and the outlet flange 3 in sequence, and the mixing pipe 7 effectively avoids the contact of the low-pressure saturated steam after the desuperheating and the inner wall of the steam pipeline 2, and further effectively protects the steam pipeline 2 from being corroded.

The utility model discloses mutually support so that the desuperheating water forms directional whirl with the help of cyclone tube 5 and cyclone chamber 61, and then prolonged the mixing time of desuperheating water and steam, thereby make the desuperheating water atomize completely, accelerate the velocity of flow of steam with the help of venturi 6 simultaneously in order to shorten the contact time of steam and steam conduit inner wall, still avoid the desuperheating water after the atomizing and steam conduit's inner wall direct contact with the help of mixing tube 7 in addition, thereby effectively avoided the corruption of steam conduit inner wall with increase of service life, and effectively prevent the emergence of incident.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A steam desuperheater is characterized by comprising a steam pipeline, a water injection pipe, a cyclone pipe, a Venturi pipe and a mixing pipe; the steam pipeline is transversely arranged, the Venturi tube is concentrically arranged in the steam pipeline, a cyclone chamber is formed inside the middle part of the Venturi tube, the cyclone tube is concentrically arranged in the cyclone chamber, one side of the cyclone tube is provided with a plurality of vertical cyclone holes tangent to the inner wall of the cyclone tube, the water injection tube is vertically inserted into the steam pipeline, the lower end of the water injection tube is fixedly inserted into the Venturi tube and extends into the cyclone chamber, the upper end of the water injection tube extends out of the upper part of the steam pipeline, the mixing tube is concentrically arranged inside the steam pipeline and is arranged on the right side of the Venturi tube, a closing-in part with the inner diameter gradually reduced from left to right is formed outwards at the left end of the mixing tube, the closing-in part is sleeved outside the right end of the Venturi tube, the end part of the closing-in part is fixed on the inner wall of the steam pipeline, and an expanding part with the inner diameter gradually increased from left to right is formed outwards at the right end of the mixing tube, the end part of the flaring part is fixed on the inner wall of the steam pipeline.

2. A steam desuperheater of claim 1, wherein a tapered barrel is further arranged on the left side of the steam pipeline, and a large-diameter end of the tapered barrel is fixed to the left end of the steam pipeline.

3. A steam desuperheater of claim 2, further comprising an inlet flange and an outlet flange; the inlet flange is fixed at the small-diameter end of the conical cylinder, and the outlet flange is fixed at the right end of the steam pipeline.