CN204064698U - A kind of online test unit of steam turbine protection - Google Patents
A kind of online test unit of steam turbine protection Download PDFInfo
- Publication number
- CN204064698U CN204064698U CN201420528822.2U CN201420528822U CN204064698U CN 204064698 U CN204064698 U CN 204064698U CN 201420528822 U CN201420528822 U CN 201420528822U CN 204064698 U CN204064698 U CN 204064698U
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- pressure
- valve
- steam turbine
- pressure oil
- test
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- 238000005070 sampling Methods 0.000 claims abstract description 20
- 238000009530 blood pressure measurement Methods 0.000 claims abstract description 19
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 38
- 238000000034 method Methods 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- Control Of Turbines (AREA)
Abstract
The utility model discloses a kind of online test unit of steam turbine protection, it is characterized in that, described device comprises two sampling passages, each sampling passage comprises pressure oil entrance (1), pressure oil throttle orifice (3), test valve, at least one pressure switch (4), device for pressure measurement (6) and oil return interface (8), pressure oil entrance (1), pressure oil throttle orifice (3), test valve is communicated with successively with oil return interface (8), described device for pressure measurement (6) is for monitoring the pressure between described test valve and described pressure oil throttle orifice (3), this stress reaction is to described pressure switch (4), for controlling the Kai Heguan of described pressure switch (4).Two sampling passage is adopted in the online test unit of the steam turbine protection that the utility model provides; improve reliability and the security of equipment; ensure that steam turbine protection equipment can action more accurately and timely, for solid foundation has been established in unit safety stable operation.
Description
Technical field
The utility model belongs to steam turbine control field, particularly, relates to a kind of online test unit of steam turbine protection.
Background technology
The setting of steam turbine protection, mainly in order to ensure the safety of in case of emergency main frame, prevents the serious accident causing substantial equipment to damage.The online test unit of steam turbine protection, as an important component part of steam turbine protection, seems particularly important.
The list that the online test unit of current steam turbine protection adopts samples lane device, and reliability is lower, as sampling passage cracking, blocking etc., protection misoperation can be made to cause unit tripping, the safe operation of serious threat steam turbine.
Utility model content
The purpose of this utility model is that the online test unit overcoming existing steam turbine protection adopts the defect that single sampling lane device reliability is not high, provides the online test unit of the steam turbine protection that a kind of reliability is high.
To achieve these goals, the utility model provides a kind of online test unit of steam turbine protection, wherein, described device comprises two sampling passages, each sampling passage comprises pressure oil entrance, pressure oil throttle orifice, test valve, at least one pressure switch, device for pressure measurement and oil return interface, pressure oil entrance 1, pressure oil throttle orifice, test valve is communicated with successively with oil return interface, described device for pressure measurement is for monitoring the pressure between described test valve and described pressure oil throttle orifice, this stress reaction is to described pressure switch, for controlling the Kai Heguan of described pressure switch.
Preferably, described each sampling passage comprises two pressure switches.
Preferably, described two pressure switches adopt parallel way to connect.
Preferably, described test valve comprises automatic control by-pass valve control and/or manual control valve.
Preferably, described test valve comprise automatic control by-pass valve control with manual control valve and described automatic control by-pass valve control be connected with parallel way with described manual control valve.
Preferably, described automatic control by-pass valve control is solenoid valve.
Preferably, described device for pressure measurement is pressure unit or tensimeter.
The technical scheme that the utility model provides; two sampling passage is adopted in the online test unit of steam turbine protection; what achieve steam turbine protection separates sampled functions in thread test binary channels; improve reliability and the security of equipment; ensure that steam turbine protection equipment can action more accurately and timely, for solid foundation has been established in unit safety stable operation.
Other feature and advantage of the present utility model are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide further understanding of the present utility model, and forms a part for instructions, is used from explanation the utility model, but does not form restriction of the present utility model with embodiment one below.In the accompanying drawings:
Fig. 1 is the hydraulic schematic diagram of the online test unit of steam turbine protection.
Description of reference numerals
1 pressure oil entrance 2,5 shutoff valve
3 pressure oil throttle orifice 4 pressure switches
6 device for pressure measurement 7 automatic control by-pass valve controls
8 oil return interface 9 manual control valves
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the utility model, is not limited to the utility model.
In the utility model, when not doing contrary explanation, carry out when " at thread test " refers to unit operation in order to check protective system in heat power device and tripping electromagnetic valve can the test of correct operation; " sampling " refers in goal object and selects representational sample, and namely choosing on the main line of equipment can the measuring circuit of consersion unit major parameter.
As shown in Figure 1, the utility model provides a kind of online test unit of steam turbine protection, wherein, described device comprises two sampling passages, each sampling passage comprises pressure oil entrance 1, pressure oil throttle orifice 3, test valve, at least one pressure switch 4, device for pressure measurement 6 and oil return interface 8, pressure oil entrance 1, pressure oil throttle orifice 3, test valve is communicated with successively with oil return interface 8, described device for pressure measurement 6 is for monitoring the pressure between described test valve and described pressure oil throttle orifice 3, this stress reaction is to described pressure switch 4, for controlling the Kai Heguan of described pressure switch 4.
In the utility model, described pressure oil entrance 1 is for accessing measuring media, described measuring media enters online test unit to carry out at thread test by pressure oil entrance 1, described measuring media can be the measuring media that this area routine uses, such as, can be EH pressure oil, lubricating oil and vacuum.
Described pressure oil throttle orifice 3 is for ensureing the stable of oil pressure, such as can not cause the pressure release of main line pressure medium when carrying out at thread test, ensure main line can normally voltage supply to prevent the malfunction of steam turbine, thus ensure that unit normal table runs, described pressure oil throttle orifice 3 can be the pressure oil throttle orifice that this area routine uses, and the diameter of described pressure oil throttle orifice 3 can be determined according to the requirement of actual pressure.
Described test valve is used for being open at thread test, when opening test valve and carrying out at thread test, pressure between described test valve and described pressure throttle orifice 3 can be monitored by device for pressure measurement 6, and the device for pressure measurement 6 when thread test and normal operation can be compared and monitor the reacting condition medium pressure release situation of numerical value, and by stress reaction to described pressure switch.
Under preferable case, as shown in Figure 1, described test valve can comprise automatic control by-pass valve control 7 and/or manual control valve 9.When described test valve comprises automatic control by-pass valve control 7 and manual control valve 9, described automatic control by-pass valve control 7 can be connected with parallel way with described manual control valve 9.Under preferable case, described automatic control by-pass valve control 7 is solenoid valve, makes it possible to come at thread test by Long-distance Control solenoid valve.
Opening and closing of described pressure switch 4 directly affects steam turbine protection action, and it is 1 that such as pressure switch 4 closes rear trigger pip, exports 1, cause tripping electromagnetic valve action, unit tripping after logical operation.
In order to optimize the online test unit that the utility model provides, under preferable case, described each sampling passage comprises two pressure switches, and described two pressure switches adopt parallel way to connect, switching logic get or.Under preferable case; two pressure switch logics of same sampling passage get "or"; and switching logic gets "AND" between two passages; particularly; the while of at least one pressure switch of at least one pressure switch and another passage of a sampling passage during action; just meeting trigger pip makes the action of steam turbine protection, and the online test unit that this set also makes the utility model provide achieves two passages and separates sampled functions.
Under preferable case, as shown in Figure 1, between described pressure oil entrance 1 and pressure oil throttle orifice 3, pipeline is also provided with shutoff valve 2, shutoff valve 2 can be used for opening or closing test pipeline.Device for pressure measurement 6 can also be provided with shutoff valve 5, is used to open or close device for pressure measurement 6.
In the utility model, described device for pressure measurement 6 is not particularly limited, as long as can realize the measurement of pressure, such as, can be pressure unit or tensimeter, under preferable case, described device for pressure measurement 6 is pressure unit, makes it possible to by remote monitoring pressure.
In the utility model; measuring media enters online test unit by the pressure oil entrance of the online test unit of steam turbine protection; measuring media enters oil return interface through pressure oil throttle orifice and pet valve successively; in the process; pressure between described test valve and described pressure oil throttle orifice 3 can be monitored by device for pressure measurement; and by this stress reaction to pressure switch, for controlling the Kai Heguan of described pressure switch.
In a preferred embodiment, as Fig. 1, the carrying out practically process of the online test unit of the steam turbine protection that the utility model provides can be: the online test unit of steam turbine protection accesses EH pressure oil by pressure oil entrance 1, now, shutoff valve 2 and 5 is in open mode, automatic control by-pass valve control 7 and manual control valve 9 are in cut-off state, and the pressure of pressure oil is passed to pressure switch 4 by pipeline by EH pressure oil; Carry out passage when thread test; open automatic control by-pass valve control 7 and manual control valve 9; make the pressure of pressure oil by pipeline pressure release to oil return interface 8; release the pressure in pipeline; by device for pressure measurement 6 monitoring media pressure pressure release situation; and by stress reaction to the pressure switch 4 composed in parallel by two pressure switches; LPS Line Pressure Switch is triggered; carry out single channel protection act, wherein the triggering of pressure switch is by needing the pressure limit of the pressure switch arranged to judge according to actual pressure.Due to the existence of pressure oil throttle orifice 3, carry out causing the pressure release of main line pressure medium when thread test, ensure can normally running of another passage, ensure that unit normal table runs.
According to the online test unit of the steam turbine protection that the utility model provides; by transforming single sampling passage as two sampling passage; and the logic etc. of pressure switch is optimized; improve reliability and the security of equipment; ensure steam turbine protection performance factor; reducing the generation of maloperation situation, is unit safety stable operation establish a firm foundation.
Below preferred implementation of the present utility model is described by reference to the accompanying drawings in detail; but; the utility model is not limited to the detail in above-mentioned embodiment; within the scope of technical conceive of the present utility model; can carry out multiple simple variant to the technical solution of the utility model, these simple variant all belong to protection domain of the present utility model.
It should be noted that in addition, each concrete technical characteristic described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the utility model illustrates no longer separately to various possible array mode.
In addition, also can carry out combination in any between various different embodiment of the present utility model, as long as it is without prejudice to thought of the present utility model, it should be considered as content disclosed in the utility model equally.
Claims (7)
1. the online test unit of a steam turbine protection, it is characterized in that, described device comprises two sampling passages, each sampling passage comprises pressure oil entrance (1), pressure oil throttle orifice (3), test valve, at least one pressure switch (4), device for pressure measurement (6) and oil return interface (8), pressure oil entrance (1), pressure oil throttle orifice (3), test valve is communicated with successively with oil return interface (8), described device for pressure measurement (6) is for monitoring the pressure between described test valve and described pressure oil throttle orifice (3), this stress reaction is to described pressure switch (4), for controlling the Kai Heguan of described pressure switch (4).
2. device according to claim 1, is characterized in that, described each sampling passage comprises two pressure switches.
3. device according to claim 2, is characterized in that, described two pressure switches adopt parallel way to connect.
4. device according to claim 1, is characterized in that, described test valve comprises automatic control by-pass valve control (7) and/or manual control valve (9).
5. device according to claim 4, it is characterized in that, described test valve comprises automatic control by-pass valve control (7) and manual control valve (9), and described automatic control by-pass valve control (7) is connected with parallel way with described manual control valve (9).
6. the device according to claim 4 or 5, is characterized in that, described automatic control by-pass valve control (7) is solenoid valve.
7. device according to claim 1, is characterized in that, described device for pressure measurement is pressure unit or tensimeter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528822.2U CN204064698U (en) | 2014-09-15 | 2014-09-15 | A kind of online test unit of steam turbine protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420528822.2U CN204064698U (en) | 2014-09-15 | 2014-09-15 | A kind of online test unit of steam turbine protection |
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| Publication Number | Publication Date |
|---|---|
| CN204064698U true CN204064698U (en) | 2014-12-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420528822.2U Active CN204064698U (en) | 2014-09-15 | 2014-09-15 | A kind of online test unit of steam turbine protection |
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| CN (1) | CN204064698U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353100A (en) * | 2016-10-28 | 2017-01-25 | 中国神华能源股份有限公司 | Test block for emergency trip system of steam turbine |
| CN107462413A (en) * | 2017-09-18 | 2017-12-12 | 广州华润热电有限公司 | A kind of experiment detection device |
-
2014
- 2014-09-15 CN CN201420528822.2U patent/CN204064698U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106353100A (en) * | 2016-10-28 | 2017-01-25 | 中国神华能源股份有限公司 | Test block for emergency trip system of steam turbine |
| CN107462413A (en) * | 2017-09-18 | 2017-12-12 | 广州华润热电有限公司 | A kind of experiment detection device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: China Shenhua Energy Co.,Ltd. Patentee after: National Energy Group Guohua Power Co.,Ltd. Patentee after: Guoneng Hebei Dingzhou Power Generation Co.,Ltd. Address before: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee before: China Shenhua Energy Co.,Ltd. Patentee before: National Energy Group Guohua Power Co.,Ltd. Patentee before: HEBEI GUOHUA DINGZHOU POWER GENERATION Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: China Shenhua Energy Co.,Ltd. Patentee after: National Energy Group Guohua Power Co.,Ltd. Patentee after: HEBEI GUOHUA DINGZHOU POWER GENERATION Co.,Ltd. Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: China Shenhua Energy Co.,Ltd. Patentee before: BEIJING GUOHUA POWER Co.,Ltd. Patentee before: HEBEI GUOHUA DINGZHOU POWER GENERATION Co.,Ltd. |