CN218324976U

CN218324976U - Shaft seal steam supply desuperheating water uniform atomization device

Info

Publication number: CN218324976U
Application number: CN202221513070.3U
Authority: CN
Inventors: 李志军; 崔建勋; 尹志强; 顾文涛; 郭建立
Original assignee: China Construction Investment Co ltd
Current assignee: China Construction Investment Co ltd
Priority date: 2022-06-17
Filing date: 2022-06-17
Publication date: 2023-01-17
Anticipated expiration: 2032-06-17

Abstract

The utility model relates to a steam turbine bearing seal supplies vapour desuperheating water jet equipment technical field, especially relates to a shaft seal supplies vapour desuperheating water uniform atomization device. The water inlet structure comprises a cylindrical part body, wherein a first water inlet hole penetrating through two ends of the part body is formed in the part body, a second water inlet hole and a third water hole which are coaxial and are not communicated are also formed in the part body and are respectively communicated with two ends of the part body, a plurality of spray holes are respectively communicated on the second water inlet hole and the third water hole, and the spray holes penetrate through the side wall of the part body; a bottom cover is welded at one end of the piece body, and a concave platform is arranged at one end of the bottom cover close to the piece body so as to communicate the first water inlet hole with the third water hole; the one end welding of a body has the flange spare, be provided with first inlet tube and second inlet tube with first inlet opening and second inlet opening intercommunication respectively on the flange spare. The utility model discloses can evenly atomize the desuperheating water.

Description

Shaft seal steam supply desuperheating water uniform atomization device

Technical Field

The utility model relates to a steam turbine bearing seal supplies vapour desuperheating water jet equipment technical field, especially relates to a shaft seal supplies vapour desuperheating water uniform atomization device.

Background

The steam seal system is sealed by means of external supply shaft seal steam, and the steam seal system is used for preventing steam in the steam turbine from leaking along an axis, so that the steam is prevented from entering a bearing seat to cause water in oil, influence oil quality and influence equipment by the influence of leaking into a machine room to influence the environment. For the low-pressure cylinder, necessary plugging must be carried out on air leakage at two shaft ends so as to adapt to stable, reliable and higher vacuum and improve the economy of the heat cycle of the whole machine to the maximum extent. The safety and the economical efficiency of the unit are directly influenced by the high and low and stable steam supply temperature of the shaft seal, and the low-pressure shaft seal temperature reducing device is used for controlling the steam supply of the low-pressure shaft seal within a proper temperature range. The steam turbine low pressure bearing seal attemperator needs to set up atomizing device to atomize and spout the attemperator and cool down the bearing seal vapour that gets into the low pressure bearing seal. The atomizing device of prior art, only atomizing pipeline all the way, after inserting steam turbine low pressure bearing seal attemperator, when adjusting the attemperator water yield, can influence attemperator water atomizing device's atomization effect, will lead to the atomization effect variation when the whole attemperator water yield becomes little (the water yield diminishes and will lead to the water pressure of atomizing device department diminishes, atomization effect variation).

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that the technique that exists is not enough to the aforesaid, provides a shaft seal steam desuperheating water even atomizing device.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a shaft seal steam supply desuperheating water uniform atomization device comprises a cylindrical piece body, wherein a first water inlet hole penetrating through two ends of the piece body is formed in the piece body, a second water inlet hole and a third water hole which are coaxial and not communicated are further formed in the piece body, the second water inlet hole and the third water hole are respectively communicated with two ends of the piece body, a plurality of spray holes are respectively communicated with the second water inlet hole and the third water hole, and the spray holes penetrate through the side wall of the piece body; a bottom cover is welded at one end of the element body, and a concave platform is arranged at one end of the bottom cover close to the element body so as to communicate the first water inlet hole with the third water hole; the one end welding of the piece body has the flange spare, be provided with first inlet tube and the second inlet tube with first inlet opening and second inlet opening intercommunication respectively on the flange spare.

Further optimize this technical scheme, the one end of flange spare is provided with the drum, the cylinder is kept away from the pot head of flange spare and is established and weld in the outside of a body one end.

According to the technical scheme, the three spray holes form a spray hole group, the axis of each spray hole in the spray hole group is located on the same plane perpendicular to the axis of the second water inlet hole, the two spray holes in the spray hole group are symmetrically arranged relative to the axis of the other spray hole, and the axes of the two spray holes and the axis of the other spray hole form an included angle of 43 degrees.

According to the technical scheme, the spray hole groups are distributed at equal intervals in the axial direction of the second water inlet hole, the spray hole groups are distributed at equal intervals in the axial direction of the third water hole, and the orientation of all the spray hole groups is the same.

Compared with the prior art, the utility model has the advantages of it is following: have two way atomizing pipelines, after inserting steam turbine low pressure bearing seal attemperator, get into under the condition that the attemperator water yield of first inlet tube and second inlet tube was controlled alone, can realize when adjusting the attemperator water yield, also can guarantee attemperator water atomizer's atomization effect at certain extent, prevent to a certain extent because of the condition emergence that the atomization effect that the whole attemperator water yield diminishes and leads to worsens.

Drawings

Fig. 1 is a schematic structural view of a shaft seal steam supply and desuperheating water uniform atomization device.

Fig. 2 is a cross-sectional view of the body.

In the figure: 1. a body; 11. a first water inlet hole; 12. a second water inlet hole; 13. spraying a hole; 14. a third water hole; 2. a bottom cover; 3. a flange member; 31. a cylinder; 32. a first water inlet pipe; 33. a second water inlet pipe.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings in combination with the following embodiments. It should be understood that the description is intended for purposes of illustration only and is not intended to limit the scope of the present disclosure. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.

The specific implementation mode is as follows: referring to fig. 1-2, a shaft seal steam supply and desuperheating water uniform atomization device comprises a cylindrical member 1, wherein a first water inlet 11 penetrating through two ends of the member 1 is formed in the member 1, a second water inlet 12 and a third water hole 14 which are coaxial and not communicated are further formed in the member 1, the second water inlet 12 and the third water hole 14 are respectively communicated with two ends of the member 1, a plurality of spray holes 13 are respectively communicated with the second water inlet 12 and the third water hole 14, and the spray holes 13 penetrate through the side wall of the member 1. One end of the piece body 1 is welded with a bottom cover 2, one end of the bottom cover 2 close to the piece body 1 is provided with a concave platform, and the concave platform is communicated with the first water inlet hole 11 and the third water hole 14 so as to communicate the first water inlet hole and the third water inlet hole. The one end welding of the body 1 has flange spare 3, be provided with first inlet tube 32 and the second inlet tube 33 with first inlet opening 11 and the intercommunication of second inlet opening 12 respectively on the flange spare 3. One ends of the first and second

water inlet pipes

32 and 33 are welded to the ends of the body 1, respectively, and the other ends thereof protrude outward through the flange member 3. The diameters of the first water inlet hole 11, the second water inlet hole 12 and the third water hole 14 are preferably 6 mm, the diameter of the spray hole 13 is preferably 0.8 mm, the diameter of the body 1 is preferably 50 mm, and the distance from the axis of the second water inlet hole 12 to the axis of the body 1 is preferably 11 mm.

One end of the flange member 3 is provided with a cylinder 31, and one end of the cylinder 31, which is far away from the flange member 3, is sleeved and welded outside one end of the member body 1. After one end of the first water inlet pipe 32 and one end of the second water inlet pipe 33 are welded to the end of the body 1, the two ends of the cylinder 31 are respectively welded to the flange 3 and the body 1.

Every three spray holes 13 form a spray hole group, the axis of each spray hole 13 in the spray hole group is positioned on the same plane which is vertical to the axis of the second water inlet hole 12, two spray holes 13 in the spray hole group are symmetrically arranged relative to the axis of the other spray hole 13, and the axes of the two spray holes 13 and the axis of the other spray hole 13 form an included angle of 43 degrees, so that the spray range of the water mist is reasonable. The groups of the spray holes are equally spaced in the axial direction of the second water inlet hole 12 and equally spaced in the axial direction of the third water hole 14, and all the groups of the spray holes are oriented in the same direction, and the sprayed water is directed to one side of the body 1.

When in use, as shown in fig. 1-2, the first water inlet pipe 32 and the second water inlet pipe 33 are both connected to the desuperheating water pipeline, and an adjusting valve and a flow meter are respectively arranged between the first water inlet pipe and the desuperheating water pipeline, and the adjusting valve and the flow meter are electrically connected to obtain a controller of the low-pressure shaft seal desuperheating device of the steam turbine. One path of temperature reduction water sequentially enters the first water inlet pipe 32, the first water inlet hole 11, the concave table in the bottom cover 2 and the third water hole 14, and is sprayed out from the spray hole 13 communicated with the third water hole 14 to cool the shaft seal steam entering the low-pressure shaft seal; the other path of temperature-reducing water sequentially enters a second water inlet pipe 33 and a second water inlet hole 12 and is sprayed out from a spray hole 13 communicated with the second water inlet hole 12 to reduce the temperature of the shaft seal steam entering the low-pressure shaft seal. This kind of structure can realize the water yield that the independent control got into first inlet tube 32 and second inlet tube 33, close an adjusting valve even and make one among first inlet tube 32 and the second inlet tube 33 not intake, the purpose is when adjusting the desuperheating water yield, also can guarantee desuperheating water atomizer's atomization effect in certain extent, prevent to a certain extent because of the condition emergence of the atomization effect variation that the whole desuperheating water yield diminishes and leads to (the water pressure that can close an adjusting valve in order to keep another way when the whole desuperheating water yield diminishes, thereby keep atomization effect in certain extent), and the desuperheating water only has even atomizing and the blowout just can carry out effectual cooling to the bearing seal vapour that gets into the low pressure bearing seal.

It should be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.

Claims

1. The utility model provides a shaft seal steam supply desuperheating water uniform atomization device which characterized in that: the water-saving type water-saving valve comprises a cylindrical valve body (1), wherein a first water inlet hole (11) penetrating through two ends of the valve body (1) is formed in the valve body (1), a second water inlet hole (12) and a third water hole (14) which are coaxial and not communicated are further formed in the valve body (1), the second water inlet hole (12) and the third water hole (14) are respectively communicated with two ends of the valve body (1), a plurality of spray holes (13) are respectively communicated with the second water inlet hole (12) and the third water hole (14), and the spray holes (13) penetrate through the side wall of the valve body (1); a bottom cover (2) is welded at one end of the piece body (1), and a concave platform is arranged at one end, close to the piece body (1), of the bottom cover (2) so that the first water inlet hole (11) is communicated with the third water hole (14); the one end welding of a body (1) has flange spare (3), be provided with first inlet tube (32) and second inlet tube (33) with first inlet opening (11) and second inlet opening (12) intercommunication respectively on flange spare (3).

2. The shaft seal steam supply desuperheating water uniform atomizing device as claimed in claim 1, characterized in that: one end of the flange piece (3) is provided with a cylinder (31), and one end of the cylinder (31) far away from the flange piece (3) is sleeved and welded outside one end of the piece body (1).

3. The shaft seal steam supply and temperature reduction water uniform atomization device according to claim 1, characterized in that: the three spray holes (13) form a spray hole group, the axis of each spray hole (13) in the spray hole group is positioned on the same plane perpendicular to the axis of the second water inlet hole (12), two spray holes (13) in the spray hole group are symmetrically arranged relative to the axis of the other spray hole (13), and the axes of the two spray holes (13) form an included angle of 43 degrees with the axis of the other spray hole (13).

4. The shaft seal steam supply and temperature reduction water uniform atomization device according to claim 3, characterized in that: the groups of the spray holes are distributed at equal intervals in the axial direction of the second water inlet hole (12), the groups of the spray holes are distributed at equal intervals in the axial direction of the third water hole (14), and the orientation of all the groups of the spray holes is the same.