CN2294367Y - Cock throttle device - Google Patents
Cock throttle device Download PDFInfo
- Publication number
- CN2294367Y CN2294367Y CN 97237167 CN97237167U CN2294367Y CN 2294367 Y CN2294367 Y CN 2294367Y CN 97237167 CN97237167 CN 97237167 CN 97237167 U CN97237167 U CN 97237167U CN 2294367 Y CN2294367 Y CN 2294367Y
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- Prior art keywords
- cock
- housing
- utility
- model
- casing
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- Expired - Fee Related
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Abstract
The utility model provides a new style cock throttling device product which has a certain energy saving effect and discharges fluid with fixed quantity. The utility model is formed by that a casing is provided with an inlet, an outlet and a by-pass port, a cock provided with a plurality of branch holes and long throttling holes is arranged in the casing and is connected with the casing by screw threads, and the loading end of the cock is fastened and sealed by a sealing gasket, a flange and a high temperature bolt. The utility model is suitable for the mounting use of the water dredging points of steam turbines and the use under the working temperature of 400 DEG to 540 DEG and the working pressure of 25 MPa to 17MPa, and has the advantages of energy saving, temperature lowering, pressure reducing, steam flow velocity reducing, pipeline vibration prevention, convenient installation, maintenance and use, etc.
Description
The utility model relates to a kind of dedicated stream body segment stream assembly, and particularly a kind of cock flow controller with certain energy-saving effect, the quantitative discharging of convection cell is suitable for the hydrophobic point of steam turbine and installs and uses.
Known to studying for many years according to the claimant, homemade large-size steam turbine draining system is directly hydrophobic in the dewatering capacity-enlarging device by valve always, exhaust.Its shortcoming is to realize quantitative discharging, makes main steam like this, and the energy loss of reheating steam system strengthens, influence hydrophobic, dim machine effect.Particularly excess steam charges into the dewatering capacity-enlarging device when the turbine system variable parameter operation, and causes overheated, the overvoltage of dewatering capacity-enlarging device, even blast.
The purpose of this utility model is exactly in order to overcome above-mentioned the deficiencies in the prior art part, and (this product also claims orifice union to design and develop out the quantitative cock flow controller novel product that discharges of a kind of safe, economic convection cell.
The purpose of this utility model is such realization: it is made up of housing, cock, gasket seal, flange, high temperature fastening piece, have import, outlet and by-pass port on the housing, cock with many holes and meropodium discharge orifice is threadedly connected in the housing, between the import of housing and by-pass port, have air chamber and be connected with throttle orifice in the cock, at the end of packing into of cock with gasket seal, flange, high temperature bolt fit sealing.
Described gasket seal is stainless steel/graphite spirotallic gasket.
Described housing profile is the square type.
The utility model makes the service aisle direction and the changes of section of steam big owing to adopt said structure, and its flow resistance is also big, the energy dissipating desuperheat, and effect of easing stress is obvious; Can reduce steam flow rate, prevent pipe vibration, reduce the noise that flows; By-pass port can use when urgency; Dismountable flange is convenient to maintenance and is cleaned, and is easy to install, seals advantages such as reliable.
Describe in detail below in conjunction with accompanying drawing.
Fig. 1 is that the utility model master looks sectional view.
Fig. 2 is the side view of Fig. 1.
With reference to Fig. 1, Fig. 2, adopt stiff case 1, the import on it, outlet and by-pass port be connected with the drain pipe of steam turbine draining system (adopting highi degree of accuracy to weld).Square shell body 1 has been opened import (top), outlet (left side) and by-pass port (below).Cock 2 has a plurality of (at least 12) hole (require many hole flow area summations should more than or equal to throttle hole area) and meropodium discharge orifice, and housing 1 and interior cock 2 employings thereof are threaded.Between the import of housing 1 and by-pass port, have air chamber 8 and be connected with throttle orifice in the cock 2.Packing into of cock 2 held with gasket seal 3 (can adopt the austenite stainless steel plate washer, with stainless steel/graphite spirotallic gasket better effects if), and flange 4 is with spherical washer 5, nut 6, bolt 7 (as the power station high temperature bolt) fit sealing.It is fixing that housing 1 outer wall has nameplate 9 usefulness rivets 10.
After the steam of the hydrophobic point of steam turbine and water are dredged this device, inlet at this flow controller changes flow area for the first time, for the first time to steam and water throttling, energy dissipating, steam and water enter this flow controller air chamber B then, steam expansion here, for the second time to steam and water energy dissipating, last steam and water are through a plurality of holes of cock, further to steam and water throttling, energy dissipating, by the throttle orifice of slotted hole structure, limit the quantity of and discharge to the dewatering capacity-enlarging device from outlet, improved the Economy of draining system.Rush at draining system in a large number when Under Variable Conditions of Steam Turbine the operating mode of removal of load (especially), because the function of limiting the quantity of of this cock flow controller, excessive, superheated vapor can't pass through, thereby development unit has been played protective action, has improved the Security of draining system.
This product through the sub-power plant in dune ridge, Hebei, on to pacify users such as the first pad power plant of power plant, Taiyuan successively on probation, since putting into operation the draining system operation normal, it is overheated that the dewatering capacity-enlarging device does not occur, the situation of overvoltage.
Restriction characteristic of the present utility model is by the decision of the throttle diameter in the cock (by the flow decision).Its Applicable scope: 540 ℃ of X13-17V type operating temperatures, working pressure 17MPa; 400 ℃ of X13--25 type operating temperatures, working pressure 25MPa.The weight of this product is light (about 10kg), does not need the special device for hoisting of pipeline, is convenient to draining system and installs, and arranges.Adopt stainless steel/graphite to twine gasket seal, make sealing more reliable.
Claims (3)
1. special-purpose cock flow controller, comprise by housing, cock, gasket seal, flange and high temperature fastening piece and forming, it is characterized in that: have import, outlet and by-pass port on the housing, cock with many holes and meropodium discharge orifice is threadedly connected in the housing, between the import of housing and by-pass port, have air chamber and be connected with throttle orifice in the cock, at the end of packing into of cock with gasket seal, flange, high temperature bolt fit sealing.
2. cock flow controller according to claim 1 is characterized in that: described gasket seal is stainless steel/graphite spirotallic gasket.
3. cock flow controller according to claim 1 is characterized in that: described housing profile is the square type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97237167 CN2294367Y (en) | 1997-06-06 | 1997-06-06 | Cock throttle device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97237167 CN2294367Y (en) | 1997-06-06 | 1997-06-06 | Cock throttle device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2294367Y true CN2294367Y (en) | 1998-10-14 |
Family
ID=33947872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97237167 Expired - Fee Related CN2294367Y (en) | 1997-06-06 | 1997-06-06 | Cock throttle device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2294367Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975310A (en) * | 2010-10-11 | 2011-02-16 | 国核电力规划设计研究院 | Throttling device |
| CN102272508A (en) * | 2009-01-07 | 2011-12-07 | 弗拉莫工程公司 | Device for providing a controllable pressure reduction |
| CN102705626A (en) * | 2012-05-31 | 2012-10-03 | 太原理工大学 | Hole plate mixed spiral flow pipeline energy dissipating device |
| CN111720648A (en) * | 2020-05-14 | 2020-09-29 | 江阴市节流装置厂有限公司 | Plunger type pore plate |
-
1997
- 1997-06-06 CN CN 97237167 patent/CN2294367Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102272508A (en) * | 2009-01-07 | 2011-12-07 | 弗拉莫工程公司 | Device for providing a controllable pressure reduction |
| CN102272508B (en) * | 2009-01-07 | 2013-11-06 | 弗拉莫工程公司 | Device for providing a controllable pressure reduction |
| CN101975310A (en) * | 2010-10-11 | 2011-02-16 | 国核电力规划设计研究院 | Throttling device |
| CN101975310B (en) * | 2010-10-11 | 2012-09-05 | 国核电力规划设计研究院 | Throttling device |
| CN102705626A (en) * | 2012-05-31 | 2012-10-03 | 太原理工大学 | Hole plate mixed spiral flow pipeline energy dissipating device |
| CN111720648A (en) * | 2020-05-14 | 2020-09-29 | 江阴市节流装置厂有限公司 | Plunger type pore plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |