CN207583448U - A kind of upper steam discharge feed pump turbine cylinder draining system - Google Patents
A kind of upper steam discharge feed pump turbine cylinder draining system Download PDFInfo
- Publication number
- CN207583448U CN207583448U CN201721241682.0U CN201721241682U CN207583448U CN 207583448 U CN207583448 U CN 207583448U CN 201721241682 U CN201721241682 U CN 201721241682U CN 207583448 U CN207583448 U CN 207583448U
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- water
- feed pump
- pump turbine
- steam discharge
- upper steam
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Abstract
The utility model discloses a kind of upper steam discharge feed pump turbine cylinder draining systems, including upper steam discharge feed pump turbine, restricting orifice, water jet air ejector and host condenser, one end of upper exhaust feed pump turbine is connected by blow-off line with host condenser, the other end is connected by cylinder drain water piping with the bleeding point of water jet air ejector, restricting orifice and hydrophobic manually operated door are sequentially installed on cylinder drain water piping, the water inlet of water jet air ejector is connected with condensation water desuperheating water conveyance conduit, the water outlet of water jet air ejector is connected by outlet conduit with host condenser；Manually operated door is respectively arranged on outlet conduit and condensation water desuperheating water conveyance conduit.The utility model is by increasing water jet air ejector, a restricting orifice on upper steam discharge feed pump turbine cylinder drain water piping and manually operated door being installed in other pipelines, ensure that unit cylinder foot during starting and running is hydrophobic unobstructed, effectivelying prevent cylinder, temperature difference of the cylinder is excessive up and down.
Description
Technical field
The utility model is related to a kind of upper steam discharge feed pump turbine cylinder draining systems.
Background technology
In order to fully excavate the main and auxiliary equipment potential of unit, station service power consumption rate is further reduced, improves power supply capacity, some are thrown
The unit of fortune has carried out electric pump and has changed heat pump application, passes through feasibility study and Preliminary design, it is contemplated that live space layout, newly
It builds automobile assembly welding Iine and is arranged in zero meter of layer of steam turbine building, feed pump turbine uses upper exhaust mode, and steam discharge is directly entered host
Condenser, cylinder foot is hydrophobic to be immediately discharged to condenser.
Cylinder is hydrophobic in warming-up, start-up course before the startup of upper steam discharge feed pump turbine is switched on, and is given in upper steam discharge
Until complete cooling, cylinder is hydrophobic to be switched on water pump halt turbines.Upper steam discharge feed pump turbine is in normal operation
Period in order to ensure cylinder foot have certain through-current capacity prevent up and down temperature difference of the cylinder it is excessive, cylinder foot is hydrophobic to be beaten always
It opens.Since host condenser vacuum and the hydrophobic pressure of feed pump turbine cylinder are basically identical, it is easy to cause blocked drain and vapour
Temperature difference of the cylinder is excessive up and down for cylinder.Due to blocked drain, once intake in cylinder, blade shroud band, gland sealing gear and thrust axis may be caused
The damage held, rotor rhegma becomes the bent, permanent deformation of fixed component and sound component touches mill etc..Temperature difference of the cylinder crosses conference to cylinder up and down
It causes that cylinder expansion is uneven and generates unnecessary stress, causes axial rub, friction that will cause bending shaft, shake
It is dynamic.If handled not in time, may cause to be permanently deformed, forced outage.
It is in conclusion hydrophobic due to host condenser vacuum and vapour for steam discharge feed pump turbine cylinder in the prior art
The hydrophobic pressure of cylinder is basically identical, cause cylinder foot blocked drain and cylinder up and down temperature difference of the cylinder it is excessive caused by feed pump steamer
The problem of machine vibration, still lacks effective solution.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of upper steam discharge feed pump turbine cylinder
Draining system ensures that unit cylinder foot during starting and running is hydrophobic unobstructed, and it is certain to can guarantee that cylinder bottom has
Through-current capacity prevents cylinder, and temperature difference of the cylinder is excessive up and down.
Technical solution is used by the utility model：
A kind of upper steam discharge feed pump turbine cylinder draining system, including upper steam discharge feed pump turbine, restricting orifice, is penetrated
Water air ejector and host condenser, one end of the upper exhaust feed pump turbine are connected by blow-off line with host condenser
Logical, the other end is connected by cylinder drain water piping with the bleeding point of water jet air ejector, the hydrophobic stream of cylinder drain water piping upper edge
Dynamic direction is sequentially installed with restricting orifice and hydrophobic manually operated door, and the water inlet of the water jet air ejector is connected with condensation water desuperheating water
Conveyance conduit, the water outlet of the water jet air ejector are connected by outlet conduit with host condenser；In the outlet conduit
Manually operated door is respectively arranged with on condensation water desuperheating water conveyance conduit.
Further, it is provided with steam discharge butterfly valve on the blow-off line.
Further, the water jet air ejector includes vacuum chamber, and the vacuum chamber is fixedly arranged above intake chamber, it is described into
The top of hydroecium is equipped with water inlet, and nozzle is equipped between the intake chamber and vacuum chamber；The side of the vacuum chamber be fixed with into
Steam chest is provided with bleeding point on the air chamber, and the bottom of the vacuum chamber is connected with collapsible tube, and the collapsible tube is connected with larynx
Pipe, the bottom end of the trunnion are connected with discharge chamber, and the bottom of the discharge chamber is provided with water outlet, and the discharge chamber is equipped with remaining
Fast bleeding point.
Further, the nozzle is rotation jet nozzle.
Further, the steam flow distribution plate being connected on air chamber is equipped in vacuum chamber, is uniformly set on steam flow distribution plate
There are several vapor openings.
Further, it is provided with fixing support rack on the outer wall of the vacuum chamber.
Further, wearing layer is inlayed on the inner wall of the collapsible tube.
Further, vacuum-degree monitoring pressure gauge is installed on the outer wall of vacuum chamber；It is installed on the outer wall of intake chamber
There is water pressure monitoring pressure gauge.
Further, the tube wall of the trunnion is equipped with sound-absorbing material layer.
Further, the specification of the restricting orifice is Φ 3mm.
Compared with prior art, the beneficial effects of the utility model are：
(1) the utility model increases a jetting pumping on the cylinder drain water piping in upper steam discharge feed pump turbine
Device, overcome upper steam discharge feed pump turbine cylinder hydrophobic due to host condenser vacuum with the hydrophobic pressure of cylinder is basically identical causes
Cylinder foot blocked drain and cylinder up and down temperature difference of the cylinder it is excessive caused by feed pump turbine vibration the problem of；
(2) the utility model is respectively on outlet conduit and condensation water desuperheating water conveyance conduit and in cylinder drain water piping
On restricting orifice and hydrophobic manually operated door are installed, warming-up, start-up course and normal fortune before the startup of upper steam discharge feed pump turbine
During row, corresponding manually operated door is opened successively, ensures that unit cylinder foot during starting and running is hydrophobic unobstructed, and energy
Ensure that cylinder bottom has certain through-current capacity to prevent temperature difference of the cylinder above and below cylinder excessive.
Description of the drawings
Fig. 1 is upper steam discharge feed pump turbine cylinder draining system structure diagram disclosed in the utility model embodiment；
Fig. 2 is water jet air ejector structure diagram disclosed in the utility model embodiment；
Wherein, 1, upper steam discharge feed pump turbine, 2, exhaust butterfly valve, 3, cylinder drain water piping, 4, host condenser, 5, section
Discharge orifice plate, 6, hydrophobic manually operated door, 7, water jet air ejector, 8,9, condensation water desuperheating water conveyance conduit, 10, first manual door, 11,
Outlet conduit, 12, vacuum chamber, 13, intake chamber, 14, water inlet, 15, air chamber, 16, bleeding point, 17, collapsible tube, 18, trunnion,
19th, discharge chamber, 20, water outlet, 21, leaving velocity bleeding point, 22, fixing support rack.
Specific embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
In a kind of typical embodiment of the application, as shown in Figure 1, providing a kind of upper steam discharge feed pump turbine vapour
Cylinder draining system, the system include upper steam discharge feed pump turbine 1, water jet air ejector 7 and host condenser 4, the upper exhaust
One end of feed pump turbine 1 is connected by blow-off line with host condenser 4, the other end by cylinder drain water piping 3 with
The bleeding point connection of water jet air ejector 7, the hydrophobic flow direction of 3 upper edge of cylinder drain water piping is sequentially installed with 5 He of restricting orifice
Hydrophobic manually operated door 6, the water inlet of the water jet air ejector are connected with condensation water desuperheating water conveyance conduit 9, the water jet air ejector
Water outlet be connected by outlet conduit 11 with host condenser 4.
For hydrophobic inconsistent with host Condenser Vacuum Pressure, the steam discharge that adjusts upper steam discharge feed pump turbine cylinder
Steam discharge butterfly valve 2 is provided on pipeline, to adjust upper steam discharge feed pump turbine cylinder hydrophobic with host condenser by being vented butterfly valve 2
Vacuum pressure makes steam discharge feed pump turbine cylinder hydrophobic inconsistent with host Condenser Vacuum Pressure.
In the present embodiment, first manual door 10 is provided on the outlet conduit 11, is penetrated by first manual gate system
Water air ejector is discharged the flow for flowing to host condenser.
The second manually operated door 8 is provided on the condensation water desuperheating water conveyance conduit, is adjusted and condensed by the second manually operated door
Water attemperation water flow.
In order to overcome above-mentioned upper steam discharge feed pump turbine cylinder hydrophobic due to host condenser vacuum and the hydrophobic pressure of cylinder
Power is basically identical, cause cylinder foot blocked drain and cylinder up and down temperature difference of the cylinder it is excessive caused by feed pump turbine vibration etc.
Problem, ensures the normal operation of unit, and the present invention is provided with jetting between upper steam discharge feed pump turbine and host condenser
Air ejector, as shown in Fig. 2, the water jet air ejector 7 includes vacuum chamber 12, intake chamber 13, air chamber 15, trunnion 18 and discharge chamber
19；Fixing support rack 22 is provided on the outer wall of the vacuum chamber 12, intake chamber 13, institute are fixedly arranged above in the vacuum chamber
The top for stating intake chamber is equipped with water inlet 14, nozzle is equipped between the intake chamber 13 and vacuum chamber 12, in order to make steam abundant
Mixing, the nozzle is using rotation jet nozzle；Air chamber 15 is fixed in the side of the vacuum chamber, is provided on the air chamber
Bleeding point 16 is equipped with the steam flow distribution plate being connected on air chamber in vacuum chamber 12, is uniformly provided on steam flow distribution plate several
A vapor opening；The bottom of the vacuum chamber 12 is connected with collapsible tube 17, inlays wearing layer on the inner wall of the collapsible tube 17, greatly
Maintenance cost has been saved greatly, has improved the time of unit safety continuous operation；The collapsible tube 17 is connected with trunnion 18, the larynx
The tube wall of pipe 18 is equipped with sound-absorbing material layer, it is possible to reduce the noise that this water jet air ejector is sent out when in use；The trunnion
Bottom end is connected with discharge chamber 19, and the bottom of the discharge chamber is provided with water outlet 20, and the discharge chamber is equipped with leaving velocity bleeding point
21。
In order to monitor vacuum chamber and water inlet room pressure, the utility model is equipped with vacuum degree on the outer wall of vacuum chamber 12
Monitor pressure gauge；Water pressure monitoring pressure gauge is installed on the outer wall of intake chamber 13.
In the present embodiment, the specification of the restricting orifice 5 is Φ 3mm, improves the throttling performance of cylinder drain water piping.
As shown in Figure 1, before the startup of upper steam discharge feed pump turbine in warming-up, start-up course and normal course of operation, this
The upper steam discharge feed pump turbine cylinder draining system that utility model proposes is in use, first, open the exhaust on discharge duct
Butterfly valve 2；Then, the hydrophobic manually operated door 6 of cylinder drain water piping is opened, then opens the first manual door 10 on steam outlet pipe road；It connects
It, throw upper steam discharge feed pump turbine 1 axle envelope and vacuumizes, the second-hand being then turned on condensation water desuperheating water conveyance conduit
Door 8 is moved, steam discharge feed pump turbine cylinder foot during starting and running is hydrophobic unobstructed in guarantee, and can guarantee cylinder bottom
There is certain through-current capacity in portion, and preventing cylinder, temperature difference of the cylinder is excessive up and down.
It is above-mentioned although specific embodiments of the present invention are described with reference to the accompanying drawings, but not to this practicality newly
The limitation of type protection domain, those skilled in the art should understand that, on the basis of the technical solution of the utility model, ability
Field technique personnel do not need to make the creative labor the various modifications or changes that can be made still in the protection model of the utility model
Within enclosing.
Claims (10)
1. a kind of upper steam discharge feed pump turbine cylinder draining system, it is characterized in that, including upper steam discharge feed pump turbine, throttling
Orifice plate, water jet air ejector and host condenser, one end of the upper steam discharge feed pump turbine are coagulated by blow-off line and host
Vapour device is connected, and the other end is connected by cylinder drain water piping with the bleeding point of water jet air ejector, and cylinder drain water piping upper edge is dredged
Water flowing direction is sequentially installed with restricting orifice and hydrophobic manually operated door, and the water inlet of the water jet air ejector is connected with condensation water and subtracts
Warm water conveyance conduit, the water outlet of the water jet air ejector are connected by outlet conduit with host condenser；In the water outlet
Manually operated door is respectively arranged on pipeline and condensation water desuperheating water conveyance conduit.
2. upper steam discharge feed pump turbine cylinder draining system according to claim 1, it is characterized in that, the blow-off line
On be provided with steam discharge butterfly valve.
3. upper steam discharge feed pump turbine cylinder draining system according to claim 1, it is characterized in that, the jetting pumping
Device includes vacuum chamber, and the vacuum chamber is fixedly arranged above intake chamber, and the top of the intake chamber is equipped with water inlet, the water inlet
Nozzle is equipped between room and vacuum chamber；The side of the vacuum chamber is fixed with air chamber, and bleeding point is provided on the air chamber,
The bottom of the vacuum chamber is connected with collapsible tube, and the collapsible tube is connected with trunnion, and the bottom end of the trunnion is connected with discharge chamber,
The bottom of the discharge chamber is provided with water outlet, and the discharge chamber is equipped with leaving velocity bleeding point.
4. upper steam discharge feed pump turbine cylinder draining system according to claim 3, it is characterized in that, the nozzle is rotation
Jet nozzle.
5. upper steam discharge feed pump turbine cylinder draining system according to claim 3, it is characterized in that, it is set in vacuum chamber
There is the steam flow distribution plate being connected on air chamber, several vapor openings are uniformly provided on steam flow distribution plate.
6. upper steam discharge feed pump turbine cylinder draining system according to claim 3, it is characterized in that, in the outer of vacuum chamber
Fixing support rack is provided on wall.
7. upper steam discharge feed pump turbine cylinder draining system according to claim 3, it is characterized in that, in collapsible tube
Wearing layer is inlayed on wall.
8. upper steam discharge feed pump turbine cylinder draining system according to claim 3, it is characterized in that, in the outer of vacuum chamber
Vacuum-degree monitoring pressure gauge is installed on wall；Water pressure monitoring pressure gauge is installed on the outer wall of intake chamber.
9. upper steam discharge feed pump turbine cylinder draining system according to claim 3, it is characterized in that, the pipe of the trunnion
Wall is equipped with sound-absorbing material layer.
10. upper steam discharge feed pump turbine cylinder draining system according to claim 1, it is characterized in that, the throttle orifice
The specification of plate is Φ 3mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721241682.0U CN207583448U (en) | 2017-09-26 | 2017-09-26 | A kind of upper steam discharge feed pump turbine cylinder draining system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721241682.0U CN207583448U (en) | 2017-09-26 | 2017-09-26 | A kind of upper steam discharge feed pump turbine cylinder draining system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207583448U true CN207583448U (en) | 2018-07-06 |
Family
ID=62727779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721241682.0U Expired - Fee Related CN207583448U (en) | 2017-09-26 | 2017-09-26 | A kind of upper steam discharge feed pump turbine cylinder draining system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207583448U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030046A (en) * | 2019-03-28 | 2019-07-19 | 华电电力科学研究院有限公司 | A kind of condensate system and operation method for Turbo-generator Set |
| CN113882912A (en) * | 2021-11-12 | 2022-01-04 | 上海电气电站设备有限公司 | Drainage system of high-position arranged steam turbine |
-
2017
- 2017-09-26 CN CN201721241682.0U patent/CN207583448U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030046A (en) * | 2019-03-28 | 2019-07-19 | 华电电力科学研究院有限公司 | A kind of condensate system and operation method for Turbo-generator Set |
| CN110030046B (en) * | 2019-03-28 | 2023-11-28 | 华电电力科学研究院有限公司 | Condensate water system for steam turbine generator unit and operation method |
| CN113882912A (en) * | 2021-11-12 | 2022-01-04 | 上海电气电站设备有限公司 | Drainage system of high-position arranged steam turbine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180706 Termination date: 20200926 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |