CN204591372U - A kind of porthole of Novel steam turbine - Google Patents
A kind of porthole of Novel steam turbine Download PDFInfo
- Publication number
- CN204591372U CN204591372U CN201520191915.5U CN201520191915U CN204591372U CN 204591372 U CN204591372 U CN 204591372U CN 201520191915 U CN201520191915 U CN 201520191915U CN 204591372 U CN204591372 U CN 204591372U
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- valve
- main body
- porthole
- steam turbine
- throttle orifice
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Abstract
The utility model discloses a kind of porthole of Novel steam turbine, comprise main body, valve and throttle orifice, wherein said main body top is provided with described valve, be provided with valve rod in main body, be provided with spring outside valve rod, spring has spring seat, the end of valve rod is positioned at spring seat, body ends is provided with oil engine, is provided with active chamber in oil engine, and active chamber is provided with end cap, end cap is provided with bolt, bolt-center is provided with described throttle orifice, is provided with MEH rack after main body, is provided with relay between MEH rack and main body.What this steam valving control oil circuit throttle orifice adopted plug screw center drilling, restricting orifice realizes throttling action, realizes the slow open and close of valve, realizes buffering.Reduce the disturbance of porthole movement test to unit feedwater flow, make unit operation more stable.
Description
Technical field
The utility model relates to steam turbine field, is specifically related to a kind of porthole of Novel steam turbine.
Background technique
Steam turbine is the rotary power machinery transformation of energy of steam being become mechanical work.Main inlet throttle-stop valve is contained in the high-pressure admission side of steam turbine, an equilibrium relation of mainly Safety oil and pressure oil during main inlet throttle-stop valve action, throttle orifice plays buffer function setting up in Safety oil process: namely Safety oil is set up in oil engine bottom discharge valve bottom now, then slowly set up Safety oil on shut-off valve top by throttle orifice, Safety oil is guaranteeing that by pressure oil pressure oil cannot be discharged in feather valve.When keeping full-gear, oil engine piston has larger pressure reduction up and down, and piston has leakage, fuel-displacedly keeps a kind of state of equilibrium with oil-feed, and pressure oil meter in hole plug pressure oil reduces, and vent piston leakage quantity is constant, and porthole can slowly closing.The movement test solenoid valve action when doing main inlet throttle-stop valve movement test, pressure oil oil-feed stops, feather valve low pressure oil has been drained into by throttle orifice and has pushed back oil, the existence of throttle orifice makes valve slowly closing, after throttle orifice comes off, the inoperative oil circuit that makes of throttle orifice is unimpeded, and cause feather valve low pressure oil sharply to decline, valve is closed suddenly.
Summary of the invention
For the deficiencies in the prior art, what the purpose of this utility model was to provide a kind of Turbine Steam gate control oil circuit throttle orifice to adopt plug screw center drilling, restricting orifice realizes throttling action, realize the slow open and close of valve, realize the porthole of the Novel steam turbine of buffering.
The technical problem that the utility model solves can realize by the following technical solutions: a kind of porthole of Novel steam turbine, comprise main body, valve and throttle orifice, wherein said main body top is provided with described valve, valve rod is provided with in main body, spring is provided with outside valve rod, spring has spring seat, the end of valve rod is positioned at spring seat, body ends is provided with oil engine, is provided with active chamber in oil engine, and active chamber is provided with end cap, end cap is provided with bolt, bolt-center is provided with described throttle orifice, is provided with MEH rack after main body, is provided with relay between MEH rack and main body.
Preferably, described valve is solenoid valve.
Preferably, described spring seat has sealing cover.
Preferably, be provided with connecting rod between described oil engine and described main body, connecting rod is provided with bearing.
Preferably, be to clamping fixed between described bolt and end cap.
Beneficial effect is: what this steam valving control oil circuit throttle orifice adopted plug screw center drilling, restricting orifice realizes throttling action, realizes the slow open and close of valve, realizes buffering.Reduce the disturbance of porthole movement test to unit feedwater flow, make unit operation more stable.Throttle orifice can control oil mass and speed, and MEH rack then can be made logical operation to porthole and be carried out the folding of control valve by relay.
Accompanying drawing explanation
Fig. 1 is the structural representation of the porthole of a kind of Novel steam turbine of the utility model;
Wherein 1, main body; 2, valve; 3, spring seat; 4, valve rod; 5, relay; 6, MEH rack; 7, spring; 8, sealing cover; 9, active chamber; 10, bolt; 11, throttle orifice; 12, end cap; 13, oil engine.
Embodiment
Preferred implementation of the present utility model is described in detail below in conjunction with accompanying drawing.
Fig. 1 shows the embodiment of the porthole of a kind of Novel steam turbine of the utility model: a kind of porthole of Novel steam turbine, comprise main body 1, valve 2 and throttle orifice 11, wherein said main body 1 top is provided with described valve 2, valve rod 4 is provided with in main body 1, spring 7 is provided with outside valve rod 4, spring 7 has spring seat 3, the end of valve rod 4 is positioned at spring seat 3, main body 1 end is provided with oil engine 13, active chamber 9 is provided with in oil engine 13, active chamber 9 is provided with end cap 12, end cap 12 is provided with bolt 10, bolt 10 center is provided with described throttle orifice 11, MEH rack 6 is provided with after main body 1, relay 5 is provided with between MEH rack 6 and main body 1.Described valve 2 is solenoid valve.Described spring seat 3 has sealing cover 8.Be provided with connecting rod between described oil engine 13 and described main body 1, connecting rod is provided with bearing.Be to clamping fixed between described bolt 10 and end cap 12.
When valve 2 carries out movement test, test solenoid valve is charged, by the oil pressure of oil engine 13 active chamber 9 Room through throttle orifice 11 with push back oil phase and lead to, valve 2 movement test speed is controlled by throttle orifice 11, when valve 2 active strokes puts in place, the external sender of test position position limit switch, make test solenoid valve dead electricity, oil engine 13 gets back to fully open position again.When namely carrying out the test of low pressure main inlet throttle-stop valve, by operator station, send " Low pressure valve 2 movement test " signal to MEH rack 6.MEH, after logical process, outputs " Low pressure valve 2 movement test " signalizing activity solenoid valve by relay 5, and low pressure main inlet throttle-stop valve starts to close.When main stop valve oil engine 13 action is to 75% position, signal is to MEH to return " low pressure main stop valve movement test puts in place ", and oil engine 13 is slowly opened.When oil engine 13 standard-sized sheet, Low pressure valve 2 movement test terminates.
Based on above-mentioned, what book steam valving control oil circuit throttle orifice 11 adopted plug screw center drilling, throttle orifice 11 plate realizes throttling action, realizes the slow open and close of valve 2, realizes buffering.Reduce the disturbance of porthole movement test to unit feedwater flow, make unit operation more stable.Throttle orifice 11 can control oil mass and speed, and MEH rack 6 then can be made logical operation to porthole and be carried out the folding of control valve 2 by relay 5.
The foregoing is only embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every utilize the utility model specification and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present utility model.
Claims (5)
1. a porthole for Novel steam turbine, comprises main body, valve and throttle orifice, it is characterized in that: described main body top is provided with described valve, be provided with valve rod in main body, be provided with spring outside valve rod, spring has spring seat, the end of valve rod is positioned at spring seat, body ends is provided with oil engine, is provided with active chamber in oil engine, and active chamber is provided with end cap, end cap is provided with bolt, bolt-center is provided with described throttle orifice, is provided with MEH rack after main body, is provided with relay between MEH rack and main body.
2. the porthole of a kind of Novel steam turbine according to claim 1, is characterized in that: described valve is solenoid valve.
3. the porthole of a kind of Novel steam turbine according to claim 1, is characterized in that: described spring seat has sealing cover.
4. the porthole of a kind of Novel steam turbine according to claim 1, is characterized in that: be provided with connecting rod between described oil engine and described main body, connecting rod is provided with bearing.
5. the porthole of a kind of Novel steam turbine according to claim 1, is characterized in that: for clamping fixed between described bolt and end cap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191915.5U CN204591372U (en) | 2015-04-01 | 2015-04-01 | A kind of porthole of Novel steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520191915.5U CN204591372U (en) | 2015-04-01 | 2015-04-01 | A kind of porthole of Novel steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204591372U true CN204591372U (en) | 2015-08-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520191915.5U Active CN204591372U (en) | 2015-04-01 | 2015-04-01 | A kind of porthole of Novel steam turbine |
Country Status (1)
| Country | Link |
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| CN (1) | CN204591372U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915794A (en) * | 2018-08-28 | 2018-11-30 | 河北大唐国际迁安热电有限责任公司 | High pitch anti-dropout specific purpose tool |
-
2015
- 2015-04-01 CN CN201520191915.5U patent/CN204591372U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108915794A (en) * | 2018-08-28 | 2018-11-30 | 河北大唐国际迁安热电有限责任公司 | High pitch anti-dropout specific purpose tool |
| CN108915794B (en) * | 2018-08-28 | 2023-08-18 | 河北大唐国际迁安热电有限责任公司 | Special anti-drop tool for high-speed door |
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