CN201851176U

CN201851176U - Integral type high-pressure regulating valve of cogeneration turbine

Info

Publication number: CN201851176U
Application number: CN2010206084934U
Authority: CN
Inventors: 张红梅; 刘春雁; 张宁; 周长平
Original assignee: Shandong Qilu Motor Manufacturing Co Ltd
Current assignee: Shandong Qilu Motor Manufacturing Co Ltd
Priority date: 2010-11-16
Filing date: 2010-11-16
Publication date: 2011-06-01
Anticipated expiration: 2020-11-16

Abstract

The utility model discloses an integral type high-pressure regulating valve of a cogeneration turbine, which comprises a plurality of regulating valves. The regulating valves are directly arranged on the top of a high-pressure cylinder; the regulating valves comprise barrel-shaped valve seats; the valve seats are fixed on the high-pressure cylinder; the upper parts of the valve seats are provided with current stabilization nets; steam outlets at the lower parts of the valve seats are connected with a steam chamber after penetrating into the high-pressure cylinder; the valve seats are also connected with a floating ring through a bushing ring; the bushing ring and the floating ring are arranged in the steam chamber; the regulating valves also comprise regulating mechanisms; valve rods of the regulating mechanisms pass through a seal gland; and the bottom ends of the valve rods are matched with the steam outlets in the valve seats. In the utility model, the regulating valve body is directly arranged on an air cylinder so that a valve shell structure is not needed, and a steam current directly enters the valves through a circulation channel in the air cylinder. The utility model has a simple and compact structure, small occupied space and high efficiency and is easy to install, and the defects that the regulating valves with other structures need big mounting positions and have comparatively complicated structures are overcome.

Description

A kind of cogeneration turbine integrated type septum valve

Technical field

The utility model relates to cogeneration turbine integrated type septum valve.

Background technique

Steam turbine is one of three important in heat power station and the nuclear power station big energy conversion equipment, and in the process that chemical energy or nuclear energy with fuel are converted into electric energy, steam turbine plays the key effect of forming a connecting link.Heat energy in the high-temperature high-pressure steam that steam turbine transports out boiler or nuclear reactor is transformed into rotating mechanical energy by the multistage expansion work done, is transferred to generator and changes into electric energy output.

Septum valve is first pass that high temperature and high pressure steam enters the turbine expansion work done, and is most important to the efficient operation of the long-term safety in power station.Septum valve; its opening state is constantly to change under normal conditions; utilize the adiabatic throttling effect that produces under the different opening states; flow, pressure and other parameters to main steam are regulated and Stability Control; thereby the startup, shutdown and the output power that realize steam turbine change, and the rotating speed of stable steam turbine.But modulating valve all is provided with the valve casing structure at present, and its structure more complicated is coarse, and arranging to take up an area of increases, and adjusting function is also relatively poor.Its mounting point shared on cylinder is bigger, and the structure more complicated of cylinder, loses bigger.

The model utility content

For overcoming the deficiencies in the prior art, the utility model provides a kind of integrated type can adjust the structure of septum valve.

For achieving the above object, the utility model adopts following technological scheme:

A kind of cogeneration turbine integrated type septum valve, it comprises a plurality of modulating valve, all modulating valve all are directly installed on the high-pressure cylinder top.

Described modulating valve comprises cylinder-shaped valve seat, and valve seat is fixed on the high-pressure cylinder, and the current stabilization net is equipped with on valve seat top, and the vapor opening of valve seat bottom gos deep into linking to each other with vaporium in the high-pressure cylinder; Described valve seat also is connected with floating ring by grommet, and grommet and floating ring all are positioned at vaporium; Described modulating valve also comprises regulation structure, and the valve rod of controlling mechanism passes sealing gland, and the vapor opening in the bottom of valve rod and the valve seat matches.

The utility model is that modulating valve is directly installed on the cylinder, has saved the valve casing structure, and it is simple and compact for structure, and is easy for installation, and it is little to take up room, the efficient height, and it is big to have overcome other structure modulating valve mounting point, the shortcoming of structure more complicated.Owing to saved the valve casing structure, the steam steam flow modulating valve of directly flowing through enters vaporium, has reduced Steam loss, has reduced loss.

Description of drawings

Fig. 1 is 3 modulating valve distribution maps;

Fig. 2 is the modulating valve structural drawing;

Fig. 3 is floating ring, grommet enlarged view;

Wherein, 1 high-pressure cylinder, 2 modulating valve, 3 floating rings, 4 grommets, 5 vaporiums, 6 valve seats, 7 valve rods, 8 controlling mechanisms, 9 sealing glands, 10 current stabilization nets.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

As shown in Figure 1, this figure is that integrated type can be adjusted the septum valve application example, this modulating valve 2 is designed to 3, all be installed in the steam turbine upper cylinder half---the top of high pressure steam chamber 5, each valve is opened and closed by 8 operations of independent regulation mechanism, and controlling mechanism 8 is directly installed on the valve rack layout compactness, easy and simple to handle when installing and overhauling, and loss reduces.Omitted the design details of mechanical structure aspect among Fig. 2, emphasis has been described the component spatial form feature relevant with septum valve 2.Modulating valve 2 comprises valve seat 6, valve rod 7, floating ring 3, grommet 4, sealing gland 9, current stabilization net 10 and controlling mechanism 8, valve seat 6 is fixed on the high-pressure cylinder 1, valve seat 6 is cylinder-shaped, current stabilization net 10 is equipped with on valve seat 6 tops, valve seat 6 bottoms are vapor opening, and valve seat 6 gos deep into linking to each other with vaporium 5 in the cylinder, forms the steam flow passage, floating ring 3 and grommet 4 are between valve seat 6 bottoms and vaporium 5, and Fig. 3 is put location diagram for floating ring and grommet; Valve rod 7 is passed in sealing gland 9 middle part perforates in the hole, the vapor opening in valve rod 7 heads and the valve seat 6 matches.

Claims

1. a cogeneration turbine integrated type septum valve is characterized in that it comprises a plurality of modulating valve, and all modulating valve all are directly installed on the high-pressure cylinder top.

2. a kind of cogeneration turbine integrated type septum valve as claimed in claim 1, it is characterized in that described modulating valve comprises cylinder-shaped valve seat, valve seat is fixed on the high-pressure cylinder, the current stabilization net is equipped with on valve seat top, and the vapor opening of valve seat bottom gos deep into linking to each other with vaporium in the high-pressure cylinder; Described valve seat also is connected with floating ring by grommet, and grommet and floating ring all are positioned at vaporium; Described modulating valve also comprises regulation structure, and the valve rod of controlling mechanism passes sealing gland, and the vapor opening in the bottom of valve rod and the valve seat matches.