CN112343676A

CN112343676A - Back pressure type steam turbine equipment

Info

Publication number: CN112343676A
Application number: CN201910725443.XA
Authority: CN
Inventors: 陆惠明
Original assignee: Jiangsu Maritime Institute
Current assignee: Jiangsu Maritime Institute
Priority date: 2019-08-07
Filing date: 2019-08-07
Publication date: 2021-02-09

Abstract

The invention discloses back pressure steam turbine equipment, which comprises a nozzle, an oil absorption chamber, a mixing chamber and a diffusion pipe, wherein an impeller is arranged in the oil absorption chamber, the impeller is fixedly installed through a main shaft, the nozzle is communicated with the oil absorption chamber, the right end of the oil absorption chamber is sequentially connected with the mixing chamber and the diffusion pipe, the nozzle consists of an oil inlet cavity, an atomization cavity and an oil outlet cavity, the oil inlet cavity and the oil outlet cavity are both sleeved on the outer surface wall of the atomization cavity, atomization nets and atomization plates are arranged at two ends of the atomization cavity, and an opening is formed in one side, close to the impeller, of the oil outlet cavity, and the back pressure steam turbine equipment has the advantages that: simple structure, atomization effect are obvious and the phenomenon of reduction nozzle department jam and resource-wasting that can be obvious.

Description

Back pressure type steam turbine equipment

Technical Field

The invention relates to the technical field of mechanical equipment, in particular to back pressure type steam turbine equipment.

Background

The steam turbine is a device for converting steam heat energy into mechanical energy, steam in the steam turbine is generally in a high-temperature and high-pressure state, and temperature reduction treatment is often required when the steam turbine discharges steam.

In a steam turbine condensing unit, steam discharged by a steam turbine enters a condenser, the vacuum degree of the condenser is an important factor for ensuring the safe and stable operation of the steam turbine, and if the steam temperature is too high, the vacuum damage of the condenser can be caused, so that the steam turbine is forced to stop, and unnecessary economic loss is caused. In addition, if the steam temperature exceeds the design temperature of the condenser, potential safety hazards are possibly buried in the aspect of equipment strength, stable operation of the system is influenced, and use safety is also endangered. In the back pressure unit, the steam turbine exhaust contains high energy, which is generally used for other purposes, and the steam needs to be cooled to a proper value. The atomizer is through atomizing liquid, increase by a wide margin and steam between the heat transfer area, realize the efficient cooling. Meanwhile, aiming at different working conditions of the steam turbine, the adjustable atomizing nozzle can adjust the cooling water quantity more flexibly, not only can the reliability of the system be enhanced, but also the utilization of steam can be more reasonable. However, the steam turbine nozzle in the prior art has a poor atomization effect, and the nozzle is easily blocked or wasted due to the blocking of the impeller.

Disclosure of Invention

The present invention aims to provide a back pressure turbine plant to solve the problems set forth in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a back pressure steam turbine equipment, includes the nozzle, inhales grease chamber, mixing chamber and diffusion tube, inhale the indoor impeller that is provided with of oil, the impeller passes through main shaft fixed mounting, the nozzle communicates with each other with the oil absorption chamber, the right-hand member that inhales grease chamber connects gradually mixing chamber and diffusion tube, the nozzle comprises oil feed chamber, atomizing chamber and play oil chamber, oil feed chamber and play oil chamber all cup joint on atomizing chamber's outer table wall, atomizing chamber's both ends atomizing net and atomizing board, it is seted up by the opening to go out one side that oil chamber is close to the impeller.

Preferably, the internal diameter of atomizing intracavity wall reduces from a left side to the right side in proper order, the atomizing net specifically is hollow hemispherical structure, and has seted up the atomizing hole, inner wall one side of atomizing board is provided with the pointed cone of a plurality of coniforms, and leaves the hole between two arbitrary adjacent pointed cones.

Preferably, the size of the opening formed in the oil outlet cavity is equal to the size of the blade on the impeller.

Preferably, the inner diameter of the oil absorption chamber is larger on the left and smaller on the right, and the inner diameter of the diffusion pipe is larger on the left and smaller on the right.

Preferably, leak-proof rubber cushions are arranged at the joints of the oil inlet cavity, the atomizing cavity and the oil outlet cavity.

Compared with the prior art, the invention has the beneficial effects that: simple structure, atomization effect are obvious and the phenomenon of reduction nozzle department jam and resource-wasting that can be obvious.

Drawings

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

FIG. 2 is an installation view of the oil suction chamber structure of the present invention;

FIG. 3 is a schematic view of a nozzle structure according to the present invention.

In the figure: 1 nozzle, 101 oil inlet cavity, 102 atomization cavity, 103 oil outlet cavity, 104 atomization net, 105 atomization plate, 2 oil suction cavity, 3 mixing chamber, 4 diffusion tube, 5 impeller, 6 main shaft, 7 opening.

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.

Referring to fig. 1-3, the present invention provides a technical solution: a back pressure steam turbine apparatus comprises a nozzle 1, an oil suction chamber 2, a mixing chamber 3 and a diffusion tube 4, an impeller 5 is arranged in the oil suction chamber 2, the impeller 5 is fixedly installed through a main shaft 6, the nozzle 1 is communicated with the oil suction chamber 2, the right end of the oil absorption chamber 2 is sequentially connected with a mixing chamber 3 and a diffusion pipe 4, the nozzle 1 consists of an oil inlet cavity 101, an atomization cavity 102 and an oil outlet cavity 103, the oil inlet cavity 101 and the oil outlet cavity 103 are sleeved on the outer surface wall of the atomizing cavity 102, the atomizing net 104 and the atomizing plate 105 are arranged at two ends of the atomizing cavity 102, and the oil outlet cavity 103 is provided with an opening 7 at one side close to the impeller 5, which is noted, the size of an opening 7 formed on the oil outlet cavity 103 is equal to that of the blades on the impeller 5, the oil suction chamber 2 is small in the left and right in the inner diameter, the diffusion tube 4 is large in the left and right in the inner diameter, and leak-proof rubber gaskets are arranged at the joints of the oil inlet chamber 101, the atomizing chamber 102 and the oil outlet chamber 103.

It is worth noting that the inner diameter of the inner wall of the atomization cavity 102 is reduced from left to right in sequence, the atomization net 104 is a hollow hemispherical structure and is provided with atomization holes, one side of the inner wall of the atomization plate 105 is provided with a plurality of conical pointed cones, and a hole is reserved between any two adjacent pointed cones.

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 back pressure turbine plant comprising a nozzle (1), an oil suction chamber (2), a mixing chamber (3) and a diffuser (4), characterized in that: be provided with impeller (5) in inhaling grease chamber (2), impeller (5) are through main shaft (6) fixed mounting, nozzle (1) communicates with each other with inhaling grease chamber (2), the right-hand member that inhales grease chamber (2) connects gradually mixing chamber (3) and diffusion tube (4), nozzle (1) comprises oil feed chamber (101), atomizing chamber (102) and play oil pocket (103), oil feed chamber (101) and play oil pocket (103) all cup joint on the outer table wall in atomizing chamber (102), both ends atomizing net (104) and atomizing board (105) of atomizing chamber (102), it is offered by opening (7) to go out one side that oil pocket (103) are close to impeller (5).

2. A back pressure turbine apparatus according to claim 1, wherein: the inner diameter of the inner wall of the atomization cavity (102) is reduced from left to right in sequence, the atomization net (104) is a hollow hemispherical structure, atomization holes are formed in the atomization net, a plurality of conical pointed cones are arranged on one side of the inner wall of the atomization plate (105), and holes are reserved between any two adjacent pointed cones.

3. A back pressure turbine apparatus according to claim 1, wherein: the size of an opening (7) formed in the oil outlet cavity (103) is equal to that of the blades on the impeller (5).

4. A back pressure turbine apparatus according to claim 1, wherein: the left side and the right side of the inner diameter of the oil absorption chamber (2) are large, and the left side and the right side of the inner diameter of the diffusion pipe (4) are large.

5. A back pressure turbine apparatus according to claim 1, wherein: and leak-proof rubber gaskets are arranged at the joints of the oil inlet cavity (101), the atomizing cavity (102) and the oil outlet cavity (103).