CN201326421Y - Steam turbine lubricating oil supply device - Google Patents
Steam turbine lubricating oil supply device Download PDFInfo
- Publication number
- CN201326421Y CN201326421Y CNU2008201568318U CN200820156831U CN201326421Y CN 201326421 Y CN201326421 Y CN 201326421Y CN U2008201568318 U CNU2008201568318 U CN U2008201568318U CN 200820156831 U CN200820156831 U CN 200820156831U CN 201326421 Y CN201326421 Y CN 201326421Y
- Authority
- CN
- China
- Prior art keywords
- oil pump
- oil
- direct current
- pressure switch
- fuel feeding
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model discloses a steam turbine lubricating oil supply device, which comprises an alternating current main oil pump, an alternating current auxiliary oil pump, a direct current emergency oil pump, inverted valves, an oil tank, branch pipes, an oil supply mains, an oil cooler, a filter, pressure switches, a two-position three-way valve and a throttle valve. The alternating current main oil pump, the alternating current auxiliary oil pump and the direct current emergency oil pump are arranged on the oil tank, the three oil pumps are respectively connected with the oil supply mains through the branch pipes, the oil supply mains is communicated with a bearing, outlets of the three oil pumps are equipped with the pressure switches and the inverted valves, the oil supply mains is equipped with the oil cooler, the filter and a pressure switch, a first port of the two-position three-way valve is equipped with a pressure switch, a second port and a third port of the two-position three-way valve are communicated with the oil supply mains and the oil tank, the throttle valve is arranged on the oil supply mains, and the throttle valve is located between the filter and the bearing. The branch pipe connected with an outlet of the direct current emergency oil pump passes through the oil cooler and the filter to be connected with the oil supply mains. The utility model can simplify an oil supply system device, increases oil supply efficiency, reduces energy consumption and saves production cost.
Description
Technical field
The utility model relates to the turbo-engine lube supply system.
Background technique
At present, the turbo-engine lube oil supplying device, referring to Fig. 1, comprise main oil pump 22, interchange auxiliary oil pump 2, the critical oil pump 3 of direct current, oil gun 17, check valve 4, fuel tank 5, first arm 6, second arm 7, the female pipe 9 of fuel feeding, oil cooler 10, filter 11 and first pressure switch 21.Main oil pump 22 is installed in main shaft 20 front ends, drives main oil pump 22 operations by main shaft 20; Oil gun 17, interchange auxiliary oil pump 2 and the critical oil pump 3 of direct current are arranged on the fuel tank 5, oil gun 17 links to each other with main oil pump 22, the outlet that exchanges auxiliary oil pump 2 and the critical oil pump 3 of direct current communicates by the female pipe 9 of first, second arm 6,7 and fuel feeding respectively, and the female pipe 9 of fuel feeding leads to bearing 19.The outlet that exchanges auxiliary oil pump 2 and the critical oil pump 3 of direct current is provided with check valve 4, and the female pipe 9 of fuel feeding is provided with oil cooler 10, filter 11 and first pressure switch 21.
In the steam turbine start-up course, because rotating speed is lower, the main oil pump underpressure therefore need be by exchanging auxiliary oil pump to the bearing supplying lubricating oil to satisfy system's needs.
When reaching rated speed, close the interchange auxiliary oil pump, by main oil pump to the bearing supplying lubricating oil.The extreme pressure lubricant of main oil pump outlet is transported to oil gun, as the power oil of oil gun; Oil gun sucks lubricant oil in fuel tank, a mixed low pressure oil part is transported to bearing, and another part is transported to main oil pump and continues the circulation conveying.
When the lubricating oil pressure that is transported to bearing is lower than setting value, start the interchange auxiliary oil pump to the bearing supplying lubricating oil; As still not keeping lubricating oil pressure, when continuing to be reduced to another setting value, then start the critical oil pump of direct current.A critical oil pump of direct current that comprises in the oil supplying device is used for ensureing still can provide lubricant oil to external system when losing Ac, guarantee that steam turbine at least can dead halt.
There are the following problems in running for this oil supplying device:
1. because main oil pump is installed in front-end of spindle, make the axial length lengthening of whole unit, increased the investment on unit basis.
2. to system's fuel feeding, fuel feeding efficient is about 10%～15% to main oil pump by oil gun, and efficient is lower.
3. in the oil supplying device, between pump and the pump, oil pipe is long between pump and the oil gun, it is complicated to have increased loss and the pipeline of lubricant oil in course of conveying.
The model utility content
The purpose of this utility model is to provide a kind of turbo-engine lube feeding mechanism, and this oil supplying device can be simplified oil supply system, improves fuel feeding efficient, reduces energy consumption, saves production cost.
The utility model is achieved in that
A kind of turbo-engine lube oil supplying device, comprise and exchange auxiliary oil pump, the critical oil pump of direct current, check valve, fuel tank, first arm, second arm, the female pipe of fuel feeding, oil cooler, filter, first pressure switch, exchanging auxiliary oil pump and the critical oil pump of direct current is arranged on the fuel tank, exchange auxiliary oil pump and link to each other by the female pipe of first, second arm and fuel feeding respectively with the critical oil pump of direct current, the female pipe of fuel feeding leads to bearing; Interchange auxiliary oil pump, the critical oil pump outlet of direct current are provided with check valve, are disposed with oil cooler, filter and first pressure switch on the female pipe of fuel feeding; Described oil supplying device also comprises interchange main oil pump, two-position three-way valve, the 3rd arm, second pressure switch, the 3rd pressure switch, the 4th pressure switch, the 5th pressure switch, exchanging main oil pump is arranged on the fuel tank, exchange main oil pump and exchange auxiliary oil pump and be connected in parallel, the outlet that exchanges main oil pump is connected to the female pipe of fuel feeding by the 3rd arm, exchanges the main oil pump outlet and is provided with check valve; First port of two-position three-way valve is provided with second pressure switch, and second and third port communicates with the female pipe of fuel feeding, fuel tank; Exchange auxiliary oil pump, the critical oil pump of direct current and exchange the main oil pump outlet and be respectively arranged with the 3rd, the 4th, the 5th pressure switch, the 3rd, the 4th, the 5th pressure switch exchange auxiliary oil pump, the critical oil pump of direct current, exchange that main oil pump exports and check valve between.
Described second arm that links to each other with the critical oil pump outlet of direct current is walked around oil cooler, filter and is directly communicated with the female pipe of fuel feeding.
Described oil supplying device also comprises throttle valve, and throttle valve is arranged on the female pipe of fuel feeding, and throttle valve is between filter and bearing.
The utility model is the improvement to existing turbo-engine lube oil supplying device, adopt and exchange main oil pump, cancelled by the main oil pump of main shaft drives, the setting of oil gun, thereby the axial length and the tubing length of unit have been shortened, simplify oil supply system, reduced the infrastructure investment fund of unit, reduced energy consumption, save cost of production, improved the Security of unit.Simultaneously, directly drive the interchange main oil pump, can effectively improve operational efficiency, fuel feeding efficient is brought up to more than 60% by Wechselstrommotor.
Description of drawings
Fig. 1 is the structural representation of existing turbo-engine lube oil supplying device;
Fig. 2 is the structural representation of the utility model turbo-engine lube oil supplying device.
Among the figure: 1 exchanges main oil pump, and 2 exchange auxiliary oil pump, the critical oil pump of 3 direct currents, 4 check valves, 5 fuel tanks, 6 first arms, 7 second arms, 8 the 3rd arms, the female pipe of 9 fuel feeding, 10 oil coolers, 11 filters, 12 two-position three-way valves, 13 second pressure switches, 14 the 3rd pressure switches, 15 the 4th pressure switches, 16 the 5th pressure switches, 17 oil guns, 18 throttle valve, 19 bearings, 20 main shafts, 21 first pressure switches, 22 main oil pumps, a are first port of two-position three-way valve, b is second port of two-position three-way valve, and c is the 3rd port of two-position three-way valve.
Embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Referring to Fig. 2, a kind of turbo-engine lube oil supplying device, comprise and exchange main oil pump 1, interchange auxiliary oil pump 2, the critical oil pump 3 of direct current, check valve 4, fuel tank 5, first arm 6, second arm 7, the 3rd arm 8, the female pipe 9 of fuel feeding, oil cooler 10, filter 11, two-position three-way valve 12, first pressure switch 21, second pressure switch 13, the 3rd pressure switch 14, the 4th pressure switch 15, the five pressure switches 16, throttle valve 18.
Exchange main oil pump 1, exchange auxiliary oil pump 2 and the critical oil pump 3 of direct current all is arranged on the fuel tank 5, and exchange main oil pump 1 and exchange auxiliary oil pump 2 and be connected in parallel.The outlet that exchange main oil pump 1, exchanges auxiliary oil pump 2 and the critical oil pump 3 of direct current respectively by the 3rd, first, second arm 8,6,7 links to each other with the female pipe 9 of fuel feeding, the fuel feeding mother manages 9 leads to the bearing 19 that is sleeved on the main shaft 20.
Interchange auxiliary oil pump 2, the critical oil pump 3 of direct current are provided with check valve 4 and the 3rd, the 4th, the 5th pressure switch 14,15,16 with the outlet that exchanges main oil pump 1, and three, the 4th, the 5th pressure switch 14,15,16 is used to measure the outlet pressure that exchanges auxiliary oil pump 2, the critical oil pump 3 of direct current, exchanges main oil pump 1 exchanging auxiliary oil pump 2, the critical oil pump 3 of direct current, exchanging between main oil pump 1 outlet and the check valve 4.
Be disposed with oil cooler 10, filter 11 and first pressure switch 21 on the female pipe 9 of fuel feeding.In the utility model, the oil in the fuel tank 5 is transferred to bearing 19 exchanging main oil pump 1, exchanging under the effect of auxiliary oil pump 2 behind check valve 4, oil cooler 10, filter 11.7 of second arms that link to each other with critical oil pump 3 outlets of direct current are walked around oil cooler 10, filter 11 and are directly linked to each other to bearing 19 fuel feeding with the female pipe 9 of fuel feeding, can reduce the load and the starting time of d.c. motor, the Security that helps improving unit.Oil cooler 10 plays the effect of cooling for the oil in the female pipe 9 of fuel feeding, and 11 of filters play the effect of filtration for the oil in the female pipe 9 of fuel feeding, and first pressure switch 21 is used to measure oily pressure in the female pipe 9 of fuel feeding after oil cooler 10, filter 11 are handled.
The first port a place of two-position three-way valve 12 is provided with second pressure switch, 13, the second port b and communicates with the female pipe 9 of fuel feeding, and the 3rd port c communicates with fuel tank 5.
The utility model is work like this:
Under the normal condition, start 1 pair of system of interchange main oil pump and carry out fuel feeding.Lubricant oil in the fuel tank 5 is transported to bearing 19 behind oil cooler 10, filter 11 under the effect that exchanges main oil pump 1,18 oil that the fuel feeding mother is managed in 9 of throttle valve that are arranged between filter 11 and the bearing 19 are adjusted to the flow that needs.At this moment, two-position three-way valve 12 is in the a-b passage, and second pressure switch 13 can be measured the pressure of oil in the female pipe 9 of fuel feeding.
When the pressure of oil in the female pipe 9 of fuel feeding was lower than setting value, interlocking to start exchanged auxiliary oil pump 2 and the critical oil pump 3 of direct current, and system is replenished fuel feeding, thereby made the female pressure recovery of oil in 9 of managing of fuel feeding to normal pressure value.When oil pressure returns in the normally-pressured neighbor in the female pipe 9 of fuel feeding, can close the critical oil pump 3 of direct current, make 2 pairs of systems of interchange auxiliary oil pump carry out fuel feeding.
In the utility model, exchanging main oil pump 1 is two the 100% electronic interchange centrifugal pumps of capacity with exchanging auxiliary oil pump 2, its structure is identical, therefore exchange main oil pump 1 and exchange auxiliary oil pump 2 commutative uses, perhaps when exchanging main oil pump 1 damage, exchange auxiliary oil pump 2 and promptly can be used as 1 use of interchange main oil pump.The critical oil pump 3 of direct current with exchange main oil pump 1, to exchange auxiliary oil pump 2 all inequality; the pressure ratio of critical oil pump 3 outlets of direct current exchanges main oil pump 1 or exchanges auxiliary oil pump 2 low; after being delivered directly to filter 11; can reduce the load and the starting time of d.c. motor; help improving the Security of unit; thereby ensured that when losing Ac can guarantee provides lubricant oil to shut down requirement to satisfy to system.
In order to confirm that each oil pump can reliable operation, operator can be regularly to not doing the interlocking firing test at the oil pump of operation.Two-position three-way valve 12 is switched to the a-c passage, make second pressure switch 13 detect the pressure that is lower than setting value artificially, thereby interlocking starts interchange auxiliary oil pump 2 and the critical oil pump 3 of direct current, respectively the pressure that exchanges auxiliary oil pump 2, the critical oil pump 3 of direct current, 1 outlet of interchange main oil pump is detected by the 3rd, the 4th, the 5th pressure switch 14,15,16, thereby judge whether three oil pumps are working properly.
The utility model can be simplified oil supply system, improves fuel feeding efficient, reduces energy consumption, saves production cost.
Claims (3)
1. turbo-engine lube oil supplying device, comprise and exchange auxiliary oil pump, the critical oil pump of direct current, check valve, fuel tank, first arm, second arm, the female pipe of fuel feeding, oil cooler, filter, first pressure switch, exchanging auxiliary oil pump and the critical oil pump of direct current is arranged on the fuel tank, exchange auxiliary oil pump and link to each other by the female pipe of first, second arm and fuel feeding respectively with the critical oil pump of direct current, the female pipe of fuel feeding leads to bearing; Interchange auxiliary oil pump, the critical oil pump outlet of direct current are provided with check valve, are disposed with oil cooler, filter and first pressure switch on the female pipe of fuel feeding;
It is characterized in that: described oil supplying device also comprises interchange main oil pump, two-position three-way valve, the 3rd arm, second pressure switch, the 3rd pressure switch, the 4th pressure switch, the 5th pressure switch, exchanging main oil pump is arranged on the fuel tank, exchange main oil pump and exchange auxiliary oil pump and be connected in parallel, the outlet that exchanges main oil pump is connected to the female pipe of fuel feeding by the 3rd arm, exchanges the main oil pump outlet and is provided with check valve; First port of two-position three-way valve is provided with second pressure switch, and second and third port communicates with the female pipe of fuel feeding, fuel tank; Exchange auxiliary oil pump, the critical oil pump of direct current and exchange the main oil pump outlet and be respectively arranged with the 3rd, the 4th, the 5th pressure switch, the 3rd, the 4th, the 5th pressure switch exchange auxiliary oil pump, the critical oil pump of direct current, exchange that main oil pump exports and check valve between.
2. turbo-engine lube oil supplying device according to claim 1 is characterized in that: described second arm that links to each other with the critical oil pump outlet of direct current is walked around oil cooler, filter and is directly communicated with the female pipe of fuel feeding.
3. turbo-engine lube oil supplying device according to claim 1 is characterized in that: described oil supplying device also comprises throttle valve, and throttle valve is arranged on the female pipe of fuel feeding, and throttle valve is between filter and bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201568318U CN201326421Y (en) | 2008-12-10 | 2008-12-10 | Steam turbine lubricating oil supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201568318U CN201326421Y (en) | 2008-12-10 | 2008-12-10 | Steam turbine lubricating oil supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201326421Y true CN201326421Y (en) | 2009-10-14 |
Family
ID=41178394
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201568318U Expired - Lifetime CN201326421Y (en) | 2008-12-10 | 2008-12-10 | Steam turbine lubricating oil supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201326421Y (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003226A (en) * | 2010-12-13 | 2011-04-06 | 上海电气电站设备有限公司 | Turbine bearing lubricating oil supply system |
| CN102094684A (en) * | 2010-12-30 | 2011-06-15 | 安阳钢铁股份有限公司 | Small-sized safety protection system for turbomachine set |
| CN102778847A (en) * | 2012-07-06 | 2012-11-14 | 西安陕鼓动力股份有限公司 | Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system |
| CN103119267A (en) * | 2010-09-22 | 2013-05-22 | 西门子公司 | Oil supply system for a stationary turbomachine |
| CN104234760A (en) * | 2014-07-24 | 2014-12-24 | 江苏永钢集团有限公司 | Start control method of direct-current oil pump of a gas generator unit |
| CN104390783A (en) * | 2014-12-02 | 2015-03-04 | 中国北方车辆研究所 | High-temperature high-flow lubricating oil adjusting device |
| CN105317478A (en) * | 2015-12-03 | 2016-02-10 | 中国能源建设集团天津电力建设有限公司 | Lubricating oil filtering system for turbine body |
| CN105909961A (en) * | 2016-06-24 | 2016-08-31 | 江苏江海润液设备有限公司 | Lubricating system with multiple emergency functions and controlling method thereof |
| CN106089332A (en) * | 2016-08-18 | 2016-11-09 | 东方电气集团东方汽轮机有限公司 | A kind of thrust bearing fuel supply method and device |
| CN106594494A (en) * | 2015-10-16 | 2017-04-26 | 熵零控股股份有限公司 | Lubrication loop fluid mechanism |
| CN106761971A (en) * | 2016-12-29 | 2017-05-31 | 湖南省湘电试验研究院有限公司 | A kind of high-order energy storage meet an urgent need supply turbo-engine lube method |
| CN106979038A (en) * | 2017-05-31 | 2017-07-25 | 河北冀研能源科学技术研究院有限公司 | A kind of critical oil supply system of turbine LP rotors |
| CN109026203A (en) * | 2018-10-26 | 2018-12-18 | 山东南山铝业股份有限公司 | A kind of oil supply system of turbo-engine lube and the lube plant of gas turbine |
| CN109611162A (en) * | 2018-10-25 | 2019-04-12 | 北京康吉森节能环保技术有限公司 | A kind of energy-saving steam turbine power generation unit to be generated electricity using low-pressure saturated steam |
| CN112066261A (en) * | 2020-07-30 | 2020-12-11 | 中广核核电运营有限公司 | Oil supplementing device of oil regulating system |
| CN113374547A (en) * | 2021-07-05 | 2021-09-10 | 国能(连江)港电有限公司 | Oil pump switching system and method |
| CN114033957A (en) * | 2021-11-05 | 2022-02-11 | 国能国华(北京)电力研究院有限公司 | Oil supply system and control method thereof |
| CN115306510A (en) * | 2022-08-08 | 2022-11-08 | 潍柴动力股份有限公司 | Engine oil supply system, engine and oil supply method |
-
2008
- 2008-12-10 CN CNU2008201568318U patent/CN201326421Y/en not_active Expired - Lifetime
Cited By (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103119267A (en) * | 2010-09-22 | 2013-05-22 | 西门子公司 | Oil supply system for a stationary turbomachine |
| US9188023B2 (en) | 2010-09-22 | 2015-11-17 | Siemens Aktiengesellschaft | Oil supply system for a stationary turbomachine |
| CN103119267B (en) * | 2010-09-22 | 2016-03-30 | 西门子公司 | For the oily supply system of stationary turbines |
| CN102003226A (en) * | 2010-12-13 | 2011-04-06 | 上海电气电站设备有限公司 | Turbine bearing lubricating oil supply system |
| CN102094684A (en) * | 2010-12-30 | 2011-06-15 | 安阳钢铁股份有限公司 | Small-sized safety protection system for turbomachine set |
| CN102778847A (en) * | 2012-07-06 | 2012-11-14 | 西安陕鼓动力股份有限公司 | Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system |
| CN102778847B (en) * | 2012-07-06 | 2015-07-08 | 西安陕鼓动力股份有限公司 | Automatic shutdown method of electric towing turbine unit in failure of controlling system and oil system |
| CN104234760A (en) * | 2014-07-24 | 2014-12-24 | 江苏永钢集团有限公司 | Start control method of direct-current oil pump of a gas generator unit |
| CN104390783A (en) * | 2014-12-02 | 2015-03-04 | 中国北方车辆研究所 | High-temperature high-flow lubricating oil adjusting device |
| CN104390783B (en) * | 2014-12-02 | 2017-06-23 | 中国北方车辆研究所 | A kind of high temperature big flow lubricating oil adjusting means |
| CN106594494A (en) * | 2015-10-16 | 2017-04-26 | 熵零控股股份有限公司 | Lubrication loop fluid mechanism |
| CN105317478A (en) * | 2015-12-03 | 2016-02-10 | 中国能源建设集团天津电力建设有限公司 | Lubricating oil filtering system for turbine body |
| CN105909961A (en) * | 2016-06-24 | 2016-08-31 | 江苏江海润液设备有限公司 | Lubricating system with multiple emergency functions and controlling method thereof |
| CN106089332A (en) * | 2016-08-18 | 2016-11-09 | 东方电气集团东方汽轮机有限公司 | A kind of thrust bearing fuel supply method and device |
| CN106761971A (en) * | 2016-12-29 | 2017-05-31 | 湖南省湘电试验研究院有限公司 | A kind of high-order energy storage meet an urgent need supply turbo-engine lube method |
| CN106979038A (en) * | 2017-05-31 | 2017-07-25 | 河北冀研能源科学技术研究院有限公司 | A kind of critical oil supply system of turbine LP rotors |
| CN109611162A (en) * | 2018-10-25 | 2019-04-12 | 北京康吉森节能环保技术有限公司 | A kind of energy-saving steam turbine power generation unit to be generated electricity using low-pressure saturated steam |
| CN109026203A (en) * | 2018-10-26 | 2018-12-18 | 山东南山铝业股份有限公司 | A kind of oil supply system of turbo-engine lube and the lube plant of gas turbine |
| CN112066261A (en) * | 2020-07-30 | 2020-12-11 | 中广核核电运营有限公司 | Oil supplementing device of oil regulating system |
| CN113374547A (en) * | 2021-07-05 | 2021-09-10 | 国能(连江)港电有限公司 | Oil pump switching system and method |
| CN114033957A (en) * | 2021-11-05 | 2022-02-11 | 国能国华(北京)电力研究院有限公司 | Oil supply system and control method thereof |
| CN115306510A (en) * | 2022-08-08 | 2022-11-08 | 潍柴动力股份有限公司 | Engine oil supply system, engine and oil supply method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201326421Y (en) | Steam turbine lubricating oil supply device | |
| CN203321783U (en) | Waste heat recovery system of lubricating oil type air compressor | |
| CN110762198A (en) | Wind-powered electricity generation gear box is lubricated to be purified and temperature control system | |
| CN107355663B (en) | A kind of phase modulation lubricating oil system and its control method | |
| CN103398011A (en) | Waste heat recycling system of oil injection screw air compressor | |
| CN105909961A (en) | Lubricating system with multiple emergency functions and controlling method thereof | |
| CN206093462U (en) | Lubricating system with multiple emergent function | |
| CN206093453U (en) | Gas turbine auxiliary oil cylinders system | |
| CN110230687B (en) | Gear box lubricating and cooling system for modular grab bucket ship unloader and control method thereof | |
| CN107542912A (en) | A kind of cold filtration system for controlling gear reduction box Lubricating Oil Temperature oil | |
| CN201354770Y (en) | Cooling water circulation device for pumps | |
| CN103388676A (en) | Efficient coupling variable-frequency speed regulating system and speed regulating method | |
| CN215861002U (en) | Machine of centrifugal pump seals sparge water bearing cooling water supply installation | |
| CN201857256U (en) | Fast oiling system for oil tank of development machine | |
| CN207426704U (en) | A kind of lubrication oil supply system for phase modulation lubricating oil system | |
| CN204877915U (en) | Circulating water pump electric machine cooling water system | |
| CN207945470U (en) | A kind of pitch variable bearings lubricating system | |
| CN206458583U (en) | One kind linkage startup-shutdown control device | |
| CN207005673U (en) | A kind of phase modulation lubricating oil system | |
| CN217002308U (en) | Start-up protection device for pneumatic circulating water pump | |
| CN215929187U (en) | Thin oil station | |
| CN205351914U (en) | Energy -conserving circulating water system | |
| CN103321912B (en) | Pneumatic water pump with self-con-tained unit | |
| CN2934584Y (en) | Main oil pump-oil impeller fueller | |
| CN216617924U (en) | Energy-saving high-power desalination water station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20091014 |