CN2791262Y - Online moving device for turbine security system - Google Patents
Online moving device for turbine security system Download PDFInfo
- Publication number
- CN2791262Y CN2791262Y CN 200520125393 CN200520125393U CN2791262Y CN 2791262 Y CN2791262 Y CN 2791262Y CN 200520125393 CN200520125393 CN 200520125393 CN 200520125393 U CN200520125393 U CN 200520125393U CN 2791262 Y CN2791262 Y CN 2791262Y
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- valve
- oil
- fuel feeding
- switching valve
- security system
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Abstract
The utility model provides an online moving device for turbine safety protection systems, which is characterized in that an oil tank chamber is arranged on a main oil pump shaft near the bottom of a fly hammer in an emergency breaking device, the main oil pump shaft is added with an oil injecting valve, a switching valve and a resetting valve, and a high pressure oil opening of the main oil pump is respectively connected with the switching valve and the oil injecting valve via a high pressure oil path. The oil injecting valve is respectively connected with the oil tank chamber, the switching valve and the resetting valve on the bottom of the fly hammer in the emergency breaking device, the resetting valve is connected with an emergency breaking accelerator via an oil path, and a safety protection oil path connected with an oil outlet of the emergency breaking accelerator is connected with other safety protectors via the switching valve firstly. The utility model can carry out fly hammer movable test when the steam turbine normally operates so as to increase the reliability of the safety protection systems. Two shoulders are arranged on the main oil pump shaft, the rear part of a hook on the emergency breaking accelerator is arranged between the two shoulders and is separated from the two shoulders with a certain gap. When the utility model axially moves, the shoulders can directly strike the hook of the emergency breaking accelerator, and the accelerator can move for the protection function.
Description
Technical field
The utility model belongs to the steam turbine operation safety system, is a kind of steam turbine security system online activity device specifically.
Background technique
Machinery flyball formula overspeed protection and rotor position protection are most important two safety devices of steam turbine.In design in the past, the mechanical type flyball in the emergency governor, overspeed governor only just works when steam turbine really exceeds the speed limit, if be failure to actuate for a long time, easily causes bite, akinesia when steam turbine really exceeds the speed limit and cause accident.In addition, the original design of axial displacement limiting device is the independent system of a cover, mainly shields by the gap of adjusting oil nozzle and oil baffle disc, and the complex structure and the degree of reliability are not high.
Therefore; how a kind of steam turbine security system online activity device is provided, both can when steam turbine normally moves, have carried out the movement test of flyball, also have the rotor position protection function of steam turbine; the reliability of steam turbine operation is improved greatly, and this has become the technical problem that needs to be resolved hurrily at present.
Summary of the invention
The purpose of this utility model is the deficiency that exists at prior art, and a kind of steam turbine security system online activity device is provided, and can carry out the movement test of flyball when steam turbine normally moves, and has strengthened the reliability of security system.The further purpose of the utility model is to utilize emergency governor pilot valve to realize simple and reliable rotor position protection effect.
The purpose of this utility model is achieved by the following technical solution: a kind of steam turbine security system online activity device, comprise with the direct-connected main oil pump shaft of main shaft on emergency governor, overspeed governor and the emergency governor pilot valve of band hook, be connected to high-pressure oil passage on the emergency governor pilot valve filler opening from main oil pump, be connected to security personnel's oil circuit of linking other protector on the emergency governor pilot valve oil outlet, it is characterized in that by flyball bottom in the emergency governor, overspeed governor one oil-in chamber being set on the described main oil pump shaft, in security system, increased fuel feeding valve, the switching valve and the valve that resets, the high-pressure oil passage of main oil pump divides two-way to receive respectively on switching valve and the fuel feeding valve; The oil-in chamber of flyball bottom was connected during fuel feeding valve passed through an oil circuit and leans on emergency governor, overspeed governor, fuel feeding valve is connected with switching valve by a high-pressure oil passage, fuel feeding valve also is connected with the valve that resets by a high-pressure oil passage, the valve that resets is connected with emergency governor pilot valve by an oil circuit, and the security personnel's oil circuit that is connected on the emergency governor pilot valve oil outlet is linked other protector again through switching valve earlier.
On the described switching valve handle is set, Returnning spring is set on the handle, the guiding valve in handle and connecting rod lower end and the valve body is connected, and described fuel feeding valve is provided with rotatable handle, and handle and connecting rod is a screw rod, and the interior guiding valve of screw rod lower end and valve body is connected.
Two convex shoulders are set on the described main oil pump shaft, and the hook rear portion on the emergency governor pilot valve is arranged between two convex shoulders, and and two convex shoulders between leave the gap.
Described fuel feeding valve, switching valve and the valve that resets are structure as a whole.
The utility model compared with prior art has the following advantages and good effect:
1, the utility model steam turbine security system online activity device leans on oiling in the oil-in chamber bottom the flyball in the emergency governor, overspeed governor on main oil pump shaft, under the acting in conjunction of oil pressure and centrifugal force, flyball flies out because safe oil is cut off, can be because of the oily decompression of this burst safety the jumping machine.Can when steam turbine normally moves, carry out the movement test of flyball like this, prevent that flyball is failure to actuate for a long time and causes the phenomenon of bite, strengthen the reliability of security system.
2, the utility model steam turbine security system online activity device with the direct-connected main oil pump pump shaft of main shaft on two convex shoulders are set, the hook rear portion on the emergency governor pilot valve is arranged between two convex shoulders, and and two convex shoulders between leave the gap.Produce displacement when transfiniting as rotor axial, convex shoulder directly clashes into the emergency governor pilot valve hook, emergency governor pilot valve action and play protective function.
3, the utility model unites two into one two kinds of protective gears in the steam turbine security system, and it is simple in structure, reliable performance, and processing and fabricating is convenient, and cost is low, has improved the competitiveness of product in market.
Description of drawings
Fig. 1 is the long splice composition of the utility model steam turbine security system online activity device;
The schematic representation of two convex shoulders is set on the main oil pump shaft of Fig. 2 the utility model steam turbine security system online activity device.
Embodiment
Referring to Fig. 1, a kind of embodiment of steam turbine security system online activity device, comprise with the direct-connected main oil pump shaft 3 of main shaft on emergency governor, overspeed governor and the emergency governor pilot valve 6 of band hook 5, be connected to high-pressure oil passage on emergency governor pilot valve 6 filler openings from main oil pump.By flyball 2 bottoms in the emergency governor, overspeed governor one oil-in chamber 4 is set on main oil pump shaft 3, has increased fuel feeding valve 9, switching valve 8 and the valve 1 that resets in security system, fuel feeding valve 9, switching valve 8 and the valve 1 that resets are structure as a whole.At switching valve 8 tops handle is set, Returnning spring is set on the handle, the guiding valve in handle and connecting rod lower end and the valve body is connected.At fuel feeding valve 9 tops rotatable handle is set, handle and connecting rod is a screw rod, and the guiding valve in screw rod lower end and the valve body is connected.The high-pressure oil passage of main oil pump divides two-way to receive respectively on switching valve 8 and the fuel feeding valve 9, the oil-in chamber 4 of flyball 2 bottoms was connected during fuel feeding valve 9 passed through an oil circuit and leans on emergency governor, overspeed governor, fuel feeding valve 9 is connected with switching valve 8 by a high-pressure oil passage, fuel feeding valve 9 also is connected with the valve 1 that resets by a high-pressure oil passage, the valve 1 that resets is connected with emergency governor pilot valve 6 by an oil circuit, and the security personnel's oil circuit that is connected on emergency governor pilot valve 6 oil outlets is linked other protector again through switching valve 8 earlier.
With the direct-connected main oil pump shaft 3 of main shaft on the axis normal of parallel two convex shoulders, 10, two convex shoulders 10 with main oil pump shaft 3 is set, hook 5 rear portions on the emergency governor pilot valve 6 are arranged between two convex shoulders 10, and and two convex shoulders 10 between leave the gap.
When needs carry out movement test, press switching valve 8 with hand, its guiding valve moves down, and the security personnel's oil circuit a1 that comes from emergency governor pilot valve 6 is cut off, and simultaneously, the high pressure oil a2 of guiding valve bottom and the oily a3 of security personnel connect, and can not cause system ensure public security oily decompression and jumping machine like this.After switching valve 8 is pressed, slowly down twist the handle screw on fuel feeding valve 9 tops again, in this process, high pressure oil a2 connects through the oil circuit b1 of a3 and fuel feeding valve bottom, high pressure oil enters the oil-in chamber 4 of the bottom of emergency trip flyball 2, under the acting in conjunction of oil pressure and centrifugal force, flyball 2 flies out, bump emergency governor pilot valve hook 5, hook 5 is thrown off with guiding valve 7 external parts in the emergency governor pilot valve 6, guiding valves 7 in the emergency governor pilot valve 6 are moved to the left because the oily a1 of safety is cut off, can be because of the oily decompression of this burst safety the jumping machine.After movable experiment is finished, fuel feeding valve 9 is returned to original position, mention valve 1 handle that resets, at this moment, high-pressure oil passage a2, b2, d1 connect, and the guiding valve 7 in the emergency governor pilot valve 6 moves right under the effect of oil pressure, and hook 5 hangs on guiding valve 7 external parts again, this moment, the relinquishment switching valve 8, and entire test is finished.
The utility model emergency governor pilot valve hook 5 also possesses the function of rotor position protection; as shown in Figure 2; when rotor axial displacement is transfinited; directly clash into emergency governor pilot valve hook 5 with the convex shoulder 10 on the direct-connected main oil pump pump shaft 3 of main shaft; hook 5 is thrown off with guiding valve 7 external parts in the emergency governor pilot valve 6, emergency governor pilot valve 6 actions and play the rotor position protection function.
Certainly, above-mentioned explanation is not to be to restriction of the present utility model, and the utility model also is not limited to above-mentioned giving an example; those skilled in the art; in essential scope of the present utility model, the variation of making, remodeling, interpolation or replacement all should belong to protection domain of the present utility model.
Claims (5)
1, a kind of steam turbine security system online activity device, comprise with the direct-connected main oil pump shaft of main shaft on emergency governor, overspeed governor and the emergency governor pilot valve of band hook, be connected to high-pressure oil passage on the emergency governor pilot valve filler opening from main oil pump, be connected to security personnel's oil circuit of linking other protector on the emergency governor pilot valve oil outlet, it is characterized in that by flyball bottom in the emergency governor, overspeed governor one oil-in chamber being set on the described main oil pump shaft, increased fuel feeding valve, switching valve and the valve that resets in security system, the high-pressure oil passage of main oil pump divides two-way to receive respectively on switching valve and the fuel feeding valve; The oil-in chamber of flyball bottom was connected during fuel feeding valve passed through an oil circuit and leans on emergency governor, overspeed governor, fuel feeding valve is connected with switching valve by a high-pressure oil passage, fuel feeding valve also is connected with the valve that resets by a high-pressure oil passage, the valve that resets is connected with emergency governor pilot valve by an oil circuit, and the security personnel's oil circuit that is connected on the emergency governor pilot valve oil outlet is linked other protector again through switching valve earlier.
2, according to the described steam turbine security system of claim 1 online activity device, it is characterized in that on the described switching valve handle being set, Returnning spring is set on the handle, guiding valve in handle and connecting rod lower end and the valve body is connected, described fuel feeding valve is provided with rotatable handle, handle and connecting rod is a screw rod, and the guiding valve in screw rod lower end and the valve body is connected.
3, according to claim 1 or 2 described steam turbine security system online activity devices, it is characterized in that on the direct-connected main oil pump shaft of described and main shaft two convex shoulders being set, hook rear portion on the emergency governor pilot valve is arranged between two convex shoulders, and and two convex shoulders between leave the gap.
4, according to claim 1 or 2 described steam turbine security system online activity devices, it is characterized in that described fuel feeding valve, switching valve and the valve that resets are structure as a whole.
5,, it is characterized in that described fuel feeding valve, switching valve and the valve that resets are structure as a whole according to the described steam turbine security system of claim 3 online activity device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125393 CN2791262Y (en) | 2005-12-01 | 2005-12-01 | Online moving device for turbine security system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520125393 CN2791262Y (en) | 2005-12-01 | 2005-12-01 | Online moving device for turbine security system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2791262Y true CN2791262Y (en) | 2006-06-28 |
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ID=36807336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520125393 Expired - Fee Related CN2791262Y (en) | 2005-12-01 | 2005-12-01 | Online moving device for turbine security system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2791262Y (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476987B (en) * | 2009-01-19 | 2011-04-20 | 沈阳化工学院 | Fault diagnosis method for turbine emergency protection device |
| CN103511006A (en) * | 2013-09-26 | 2014-01-15 | 浙江华元汽轮机械有限公司 | Emergency trip accelerator |
| CN103808513A (en) * | 2012-11-15 | 2014-05-21 | 中国广东核电集团有限公司 | Offline testing device of emergency security mechanism of nuclear power station turbine |
| CN104088676A (en) * | 2014-07-24 | 2014-10-08 | 浙江华元汽轮机械有限公司 | Compact emergency governor |
| CN108131173A (en) * | 2018-02-06 | 2018-06-08 | 中国船舶重工集团公司第七0四研究所 | It is peculiar to vessel can on-line tuning formula hypervelocity protective device |
| CN112502792A (en) * | 2020-12-11 | 2021-03-16 | 上海阿波罗机械股份有限公司 | Emergency trip hanging buckle device |
-
2005
- 2005-12-01 CN CN 200520125393 patent/CN2791262Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101476987B (en) * | 2009-01-19 | 2011-04-20 | 沈阳化工学院 | Fault diagnosis method for turbine emergency protection device |
| CN103808513A (en) * | 2012-11-15 | 2014-05-21 | 中国广东核电集团有限公司 | Offline testing device of emergency security mechanism of nuclear power station turbine |
| CN103511006A (en) * | 2013-09-26 | 2014-01-15 | 浙江华元汽轮机械有限公司 | Emergency trip accelerator |
| CN103511006B (en) * | 2013-09-26 | 2015-11-25 | 浙江华元汽轮机械有限公司 | A kind of emergency governor pilot valve |
| CN104088676A (en) * | 2014-07-24 | 2014-10-08 | 浙江华元汽轮机械有限公司 | Compact emergency governor |
| CN104088676B (en) * | 2014-07-24 | 2015-08-26 | 浙江华元汽轮机械有限公司 | A kind of compact type emergency overspeed governor |
| CN108131173A (en) * | 2018-02-06 | 2018-06-08 | 中国船舶重工集团公司第七0四研究所 | It is peculiar to vessel can on-line tuning formula hypervelocity protective device |
| CN108131173B (en) * | 2018-02-06 | 2024-01-26 | 中国船舶集团有限公司第七〇四研究所 | On-line adjustable overspeed protector for ship |
| CN112502792A (en) * | 2020-12-11 | 2021-03-16 | 上海阿波罗机械股份有限公司 | Emergency trip hanging buckle device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: QINGDAO JIENENG POWER STATION, ENGEERING CO., LTD. Free format text: FORMER NAME: QINGDAO JIENENG STEAM TURBINE CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 266042 No. four, No. 102 South Road, Shandong, Qingdao Patentee after: Qingdao Jieneng Power Station, Engeering Co., Ltd. Address before: 266042 No. four, No. 102 South Road, Shandong, Qingdao Patentee before: Qingdao Jieneng Steam Turbine Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20060628 Termination date: 20131201 |