CN104481600A - Lever mechanism for safety switch of steam turbine - Google Patents
Lever mechanism for safety switch of steam turbine Download PDFInfo
- Publication number
- CN104481600A CN104481600A CN201410828030.1A CN201410828030A CN104481600A CN 104481600 A CN104481600 A CN 104481600A CN 201410828030 A CN201410828030 A CN 201410828030A CN 104481600 A CN104481600 A CN 104481600A
- Authority
- CN
- China
- Prior art keywords
- safety switch
- base
- cross bar
- guiding valve
- airtight chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Control Of Turbines (AREA)
Abstract
The invention discloses a lever mechanism for a safety switch of a steam turbine. The lever mechanism comprises a base and a rack arranged on the base, wherein a sliding valve is arranged on the base; a sealed chamber is formed in the sliding valve, and is communicated with a conduit leading to a liquid storage tank; a piston is arranged in the sealed chamber; a vertical cylindrical bar is fixedly connected to the piston; the sealed chamber is communicated with an oil inlet pipe and an oil outlet pipeline connected with a regulation system; the safety switch connected with a main shaft of the steam turbine is connected to the rack, and comprises an inner groove and a support block arranged in the inner groove; a horizontal ejector rod is arranged on the outer side of the support block; a nut and a spiral spring are arranged on the ejector rod in a sleeving way; one end of the spiral spring is pressed against the nut; a lever hinged to the rack is fixedly connected to the ejector rod, and is hinged to a horizontal cross rod in which a clamping groove is formed; a clamping claw is clamped in the clamping groove; the horizontal cross rod is hinged to the clamping claw. According to the lever mechanism, the problems of complex overall interior structure, high cost and instable running of a conventional safety switch are solved.
Description
Technical field
Mechanical control equipment of the present invention, particularly relates to the leverage in a kind of Turbine Safety switch.
Background technique
Steam turbine is the rotary power machinery transformation of energy of steam being become mechanical work, also known as steam turbine, it is mainly used as prime mover of generating, also can the various pump of Direct driver, blower fan, compressor and propeller for vessels etc., the steam discharge of steam turbine or intermediate extraction can also be utilized to meet and to produce and heat supply needs in life.Industrial steam turbine, as the driving power of generator, water pump, blower fan, compressor, is industrially widely used, and its safe operation is very important.When the unit operation of steam turbine breaks down, its Security is ensured often by safety switch, but existing safety switch is made up of more part, and relate to complicated circuit devcie and control means due to inside, cause device interior complicated integral structure, expensive, and lack suitable transmission controlling mechanism due to safety switch, make the complex operation of the equipment such as safety switch, work runs stable not enough.
Summary of the invention
The object of the present invention is to provide the leverage in a kind of Turbine Safety switch, to solve the inner complicated integral structure of existing safety switch, expensive and run problem stable not.
To achieve these goals, the invention provides following technological scheme: the leverage in Turbine Safety switch, comprise base and be located at the frame on base, described base is provided with guiding valve, airtight chamber is provided with in described guiding valve, the airtight chamber of guiding valve is communicated with the conduit of liquid tank, piston is provided with in airtight chamber, piston is connected with vertical mast, airtight chamber is communicated with oil inlet pipe and connects the flowline of regulating system, frame is provided with the safety switch connecting turbine spindle, safety switch comprises inner groovy and is located at the support block in inner groovy, the outside of support block is provided with the push rod of level, push rod is arranged with nut and helical spring, helical spring one end and nut offset, push rod is connected with the lever be articulated with in frame, lever is hinged with the cross bar of level, described cross bar is provided with draw-in groove, claw is connected with in draw-in groove, the cross bar of the hinged level of described claw, described cross bar and mast affixed.
The principle of this programme is such: be provided with push rod in safety switch, when steam turbine normally works, push rod is pressed on support block under the effect of helical spring and nut, safety switch is arranged on the main shaft of steam turbine, when revolution exceedes given numerical value, safety switch produces centrifugal force, push rod lifts under the influence of centrifugal force, and push the lever rotated around articulating point open, be connected in the draw-in groove on cross bar due to claw, during lever rotation, claw can be discharged, the cross bar making claw hinged deflects, at this moment, guiding valve is caused to move, pressured fluid is supplied to the airtight chamber in guiding valve, regulating system is entered along the flowline connecting regulating system, during mobile guiding valve, liquid drains into liquid tank from the airtight chamber of regulating system in guiding valve along conduit, the pressure of regulating system is caused to reduce and quick closedown stop valve, steam stops entering steam turbine.
Preferably, the cross bar of described level is connected with the extension spring of being fixed in frame, extension spring mainly plays support rail, when extension spring is put down, cross bar can be made to deflect.
Preferably, the airtight chamber of described guiding valve is communicated with oil exit pipe, and when steam stops entering steam turbine, pressured fluid is discharged from oil exit pipe.
Preferably, described guiding valve is fixed on base by screw, easy installation and removal.
Accompanying drawing explanation
Fig. 1 is the structural representation of the leverage embodiment in Turbine Safety switch of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Reference character in Figure of description comprises: base 1, frame 2, guiding valve 3, airtight chamber 4, conduit 5, piston 6, mast 7, oil inlet pipe 8, flowline 9, support block 10, push rod 11, nut 12, helical spring 13, lever 14, cross bar 15, extension spring 16, claw 17, oil exit pipe 18.
As shown in Figure 1, leverage in Turbine Safety switch, the frame 2 comprising base 1 and be located on base 1, base 1 is provided with guiding valve 3, airtight chamber 4 is provided with in guiding valve 3, the airtight chamber 4 of guiding valve 3 is communicated with the conduit 5 of liquid tank, airtight chamber 4 is also communicated with oil exit pipe 18, piston 6 is provided with in airtight chamber 4, piston 6 is connected with vertical mast 7, airtight chamber 4 is communicated with oil inlet pipe 8 and connects the flowline 9 of regulating system, frame 2 is provided with the safety switch connecting turbine spindle, safety switch comprises inner groovy and is located at the support block 10 in inner groovy, the outside of support block 10 is provided with the push rod 11 of level, push rod 11 is arranged with nut 12 and helical spring 13, one end and the nut 12 of helical spring 13 offset, push rod 11 is connected with the lever 14 be articulated with in frame 2, lever 14 is hinged with the cross bar 15 of level, cross bar 15 is connected with the extension spring 16 of being fixed in frame 2, cross bar 15 is provided with draw-in groove, claw 17 is connected with in draw-in groove, the cross bar of the hinged level of claw 17, cross bar and mast affixed, guiding valve 3 is fixed on base 1 by screw.
In the present embodiment, push rod 11 is provided with in safety switch, when steam turbine normally works, push rod 11 is pressed on support block 10 under the effect of helical spring 13 and nut 12, safety switch is arranged on the main shaft of steam turbine, when revolution exceedes given numerical value, safety switch produces centrifugal force, push rod 11 lifts under the influence of centrifugal force, and push the lever 14 rotated around articulating point open, because claw 17 is connected in the draw-in groove on cross bar 15, when lever 14 rotates, claw 17 can be discharged, the cross bar 15 making claw 17 hinged deflects, at this moment, guiding valve 3 is caused to move, pressured fluid is supplied to the airtight chamber 4 in guiding valve 3, regulating system is entered along the flowline 9 connecting regulating system, during mobile guiding valve 3, liquid drains into liquid tank from the airtight chamber 4 of regulating system in guiding valve 3 along conduit 5, the pressure of regulating system is caused to reduce and quick closedown stop valve, steam stops entering steam turbine.
The cross bar 15 of level is connected with the extension spring 16 of being fixed in frame 2, extension spring 16 mainly plays support rail 15, when extension spring 16 is put down, cross bar 15 can be made to deflect, the airtight chamber 4 of guiding valve 3 is communicated with oil exit pipe 18, and when steam stops entering steam turbine, pressured fluid is discharged from oil exit pipe 18, guiding valve 3 is fixed on base 1 by screw, easy installation and removal.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite not departing from structure of the present invention; some distortion and improvement can also be made; these also should be considered as protection scope of the present invention, and these all can not affect effect of the invention process and practical applicability.
Claims (4)
1. the leverage in Turbine Safety switch, comprise base and be located at the frame on base, it is characterized in that, described base is provided with guiding valve, airtight chamber is provided with in described guiding valve, the airtight chamber of guiding valve is communicated with the conduit of liquid tank, piston is provided with in airtight chamber, piston is connected with vertical mast, airtight chamber is communicated with oil inlet pipe and connects the flowline of regulating system, frame is provided with the safety switch connecting turbine spindle, safety switch comprises inner groovy and is located at the support block in inner groovy, the outside of support block is provided with the push rod of level, push rod is arranged with nut and helical spring, helical spring one end and nut offset, push rod is connected with the lever be articulated with in frame, the cross bar of the hinged level of lever, described cross bar is provided with draw-in groove, claw is connected with in draw-in groove, described claw is hinged with the cross bar of level, described cross bar and mast affixed.
2. the leverage in Turbine Safety switch as claimed in claim 1, is characterized in that, the cross bar of described level is connected with the extension spring of being fixed in frame.
3. the leverage in Turbine Safety switch as claimed in claim 1, it is characterized in that, the airtight chamber of described guiding valve is communicated with oil exit pipe.
4. the leverage in Turbine Safety switch as claimed in claim 1, it is characterized in that, described guiding valve is fixed on base by screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410828030.1A CN104481600A (en) | 2014-12-25 | 2014-12-25 | Lever mechanism for safety switch of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410828030.1A CN104481600A (en) | 2014-12-25 | 2014-12-25 | Lever mechanism for safety switch of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104481600A true CN104481600A (en) | 2015-04-01 |
Family
ID=52756190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410828030.1A Pending CN104481600A (en) | 2014-12-25 | 2014-12-25 | Lever mechanism for safety switch of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104481600A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2022122C1 (en) * | 1991-06-26 | 1994-10-30 | Вадим Иосифович Лезман | Extraction turbine protection system |
| CN2457638Y (en) * | 2000-12-13 | 2001-10-31 | 龚文 | Pressure type liquid level automatic regulator |
| CN202718715U (en) * | 2012-07-01 | 2013-02-06 | 杭州吉通机电有限公司 | Servo mechanism of air adjusting valve of turbine |
| CN202718714U (en) * | 2012-07-01 | 2013-02-06 | 浙江杰特优动力机械有限公司 | Servo amplification device for air adjusting valve of turbine |
| CN103446755A (en) * | 2013-09-09 | 2013-12-18 | 江苏唐邦机电有限公司 | Folding mechanism of Mahjong machine |
| CN103726886A (en) * | 2014-01-24 | 2014-04-16 | 中国船舶重工集团公司第七�三研究所 | Novel electrohydraulic actuator for valve control of marine steam turbine |
| CN204357502U (en) * | 2014-12-25 | 2015-05-27 | 重庆卓山机械制造有限公司 | Leverage in Turbine Safety switch |
-
2014
- 2014-12-25 CN CN201410828030.1A patent/CN104481600A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2022122C1 (en) * | 1991-06-26 | 1994-10-30 | Вадим Иосифович Лезман | Extraction turbine protection system |
| CN2457638Y (en) * | 2000-12-13 | 2001-10-31 | 龚文 | Pressure type liquid level automatic regulator |
| CN202718715U (en) * | 2012-07-01 | 2013-02-06 | 杭州吉通机电有限公司 | Servo mechanism of air adjusting valve of turbine |
| CN202718714U (en) * | 2012-07-01 | 2013-02-06 | 浙江杰特优动力机械有限公司 | Servo amplification device for air adjusting valve of turbine |
| CN103446755A (en) * | 2013-09-09 | 2013-12-18 | 江苏唐邦机电有限公司 | Folding mechanism of Mahjong machine |
| CN103726886A (en) * | 2014-01-24 | 2014-04-16 | 中国船舶重工集团公司第七�三研究所 | Novel electrohydraulic actuator for valve control of marine steam turbine |
| CN204357502U (en) * | 2014-12-25 | 2015-05-27 | 重庆卓山机械制造有限公司 | Leverage in Turbine Safety switch |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| NO152368B (en) | PROCEDURE FOR AEROBIC COMPOSITION OF ORGANIC WASTE SODOFFS. | |
| CN105840480B (en) | A kind of closed level Four connection in series-parallel pumping station system and its control method | |
| CN104502214B (en) | Turbine blade material and strengthened coat Anti-erosion and corrosive nature pilot system | |
| NO335032B1 (en) | Submarine compression system with pump driven by compressed gas | |
| US3810717A (en) | Starting arrangement for reversible pump-turbines | |
| CN105598065A (en) | High-pressure cleaning system and control method for same | |
| CN204357502U (en) | Leverage in Turbine Safety switch | |
| EP2628545B1 (en) | A cleaning in place system and a method of cleaning a centrifugal separator | |
| CN103912517A (en) | Hydraulic all-adjusted tubular pump structure for vertical shaft | |
| CN104481600A (en) | Lever mechanism for safety switch of steam turbine | |
| CN104131846A (en) | Steam source automatic switching device and method applied to 300 MW turboset steam-driven water feed pump | |
| CN109366434A (en) | A kind of mechanical equipment fault monitor station | |
| CN104847415B (en) | A kind of axial-flow type hydraulic turbine installation | |
| CN204692167U (en) | The removable Multi-level water-feeding pump of a kind of impeller | |
| CN203906318U (en) | Molten salt pump system capable of operating under pressure | |
| CN104389811A (en) | Energy reuse radial boosting pump | |
| RU128280U1 (en) | OIL TRANSFER SYSTEM FOR THE MAIN OIL PIPELINE | |
| CN209717091U (en) | Fixtures for machine tool fixtures | |
| RU182158U1 (en) | PUMP PUMP | |
| CN107246383A (en) | A kind of control method of multistage connection in series-parallel pumping station system | |
| CN105805020B (en) | Water circulating pump | |
| CN110081403A (en) | A kind of electromagnetic heater and its control method | |
| NO793832L (en) | HYDRAULIC MACHINE. | |
| CN204387384U (en) | Frock formula ball valve base structure | |
| CN103573644A (en) | Low-temperature barrel bag pump mechanical sealing protecting device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150401 |