CN206368861U - A kind of steam turbine and its EH oil system - Google Patents
A kind of steam turbine and its EH oil system Download PDFInfo
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- CN206368861U CN206368861U CN201621286702.1U CN201621286702U CN206368861U CN 206368861 U CN206368861 U CN 206368861U CN 201621286702 U CN201621286702 U CN 201621286702U CN 206368861 U CN206368861 U CN 206368861U
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Abstract
The utility model discloses a kind of EH oil systems, including fuel tank, the distributor being connected with fuel tank, the pressure switch component being connected with distributor, pressure switch component includes being directly connected for detecting that the main-piping pressure of main-piping pressure value is switched with distributor, the low duty pressure switch whether detecting system pressure value is less than the first preset pressure value is directly connected for distributor, the low two-value pressure switch whether detecting system pressure value is less than the second preset pressure value is connected to distributor, main-piping pressure value, first preset pressure value, second preset pressure value is sequentially reduced, low two-value pressure switch at least includes first pressure and switched, second pressure is switched, 3rd pressure switch, first pressure is switched, second pressure is switched, 3rd pressure switch is connected by single pipeline with distributor respectively.The problems such as being effectively improved the security of EH oil systems.Utility model, which is also disclosed, a kind of includes the steam turbine of above-mentioned EH oil systems.
Description
Technical field
The utility model is related to fired power generating unit technical field, more particularly to a kind of EH oil systems.In addition, the utility model
Further relate to a kind of include the steam turbine of above-mentioned EH oil systems.
Background technology
EH oil systems mainly provide high voltage power oil to each valve servomotor, drive each valve and valve is stopped
At the desired position.EH oil systems include fire resistant oil oil supply system, Hydrauservo System, high pressure interrupting system three parts.
Every fired power generating unit configures a set of EH oil systems, such as condensing-type supercritical unit, when a pressure of EH oil systems
When switching the oil pressure value measured less than the first preset pressure value, such as pressure switch PSC4 pressure is less than 9.2MPa, EH oil systems hair
Go out low oil pressure alarm, stand-by pump is opened in parallel connection；When the oil pressure value that several other pressure switches of EH oil systems are measured is less than second
During preset pressure value, two pressure in such as pressure switch PSC1, PSC2, PSC3 are less than 7.8Mpa, and EH oil systems send protection
Action, then shut down.
Fig. 1 is refer to, Fig. 1 is a kind of connection diagram of typical EH oil systems in the prior art.
In the prior art, EH oil systems include fuel tank 01, oil pump 05, distributor 02, recirculation conduit 04, pressure switch
Component 03, a sampling line, probe tube and pressure switch are shared during the multiple pressure switches sampling for surveying the second preset pressure value
It is connected using diameter Ф 6mm pipeline and joint, is picked out in the distributor that shared sampling line is exported from fire resistant oil pump.Altogether
With a sampling line, risk is larger, if pipeline is leaked, and directly results in shutdown, causes huge property loss；And press
Power switch probe tube is connected using the loose joint of multiple screw threads, and risk of leakage is higher.
In summary, the problems such as how effectively improving the security of EH oil systems, is that current those skilled in the art are anxious
The problem of need to solving.
Utility model content
The purpose of this utility model is to provide a kind of EH oil systems, is effectively improved security of EH oil systems etc. and asks
Topic；Another object of the present utility model, which is to provide, a kind of includes the steam turbine of above-mentioned EH oil systems.
In order to solve the above technical problems, the utility model provides following technical scheme：
A kind of EH oil systems, including fuel tank, the distributor being connected with the fuel tank, the pressure that is connected with the distributor are opened
Component is closed, the pressure switch component includes being directly connected for detecting that the main-piping pressure of main-piping pressure value is opened with the distributor
Close, be directly connected for the distributor detecting system pressure value and whether be less than the low duty pressure of the first preset pressure value opening
Close, the low two-value pressure switch whether detecting system pressure value is less than the second preset pressure value be connected to the distributor,
The main-piping pressure value, first preset pressure value, second preset pressure value are sequentially reduced, and low two duty pressure is opened
Closing at least includes first pressure switch, second pressure switch, the 3rd pressure switch, the first pressure switch, second pressure
Power switch, the 3rd pressure switch are connected by single pipeline with the distributor respectively.
Preferably, the connector of the first pressure switch and the distributor is directly connected to.
Preferably, the main-piping pressure switch, the low duty pressure switch, first pressure switch are taken by one
Sample pipe is connected at the connector of the distributor, and connected by weld ell.
Preferably, the second pressure switch is connected at the energy module component being connected with the distributor.
Preferably, the energy module component is connected with pressure gauge on the spot, and the second pressure switch is connected to the energy
Measure on modular assembly and the connecting pipe manometric on the spot.
Preferably, connected, propped up described in two of which by least three branch roads between the fuel tank and the distributor
Road is the oil pump branch road for being connected with oil pump, and one is main pipe recirculation conduit, and the 3rd pressure switch is connected to the main pipe
On recirculation conduit, and normal close valve is provided with pipeline between junction and the fuel tank.
Preferably, the quantity of the normal close valve is two, and is connected in series.
Preferably, shut-off valve is in series between the oil pump and the fuel tank, between the normal close valve and the distributor
It is in series with shut-off valve.
Preferably, filter screen is provided with the pipeline on the oil pump branch road between the oil pump and the distributor, it is described
Check-valves and shut-off valve have been sequentially connected in series between filter screen and the distributor.
The utility model also provides a kind of steam turbine, including machine body and the EH oil systems for being installed on the machine body,
The EH oil systems are specially the EH oil systems described in any of the above-described.
EH oil systems provided by the utility model, including fuel tank, distributor, pressure switch component, distributor and fuel tank
Connection, typically at least including three branch roads, two of which branch road is the oil pump branch road for being connected with oil pump, a usual oil pump branch road
Work.There is a branch road to be main pipe recirculation conduit between distributor and fuel tank, fuel tank and distributor are directly connected to.Pressure
Switch module is connected with distributor, for detecting pressure value of the EH oil systems with pipeline.Pressure switch component includes main-piping pressure
Switch, a low duty pressure switch, low two-value pressure switch, main-piping pressure value, the first preset pressure value, the second preset pressure value according to
Secondary to reduce, such as main-piping pressure value is 10Mpa, and the first preset pressure value is 9.2Mpa, and the second preset pressure value is 7.8Mpa, tool
Body pressure value is unrestricted, can be according to practical situations depending on.Main-piping pressure switch is directly connected to distributor, for examining
Survey main-piping pressure value, pressure value when being normal work.Low duty pressure switch is directly connected to distributor, for detecting system
Whether pressure value is less than the first preset pressure value, and the pressure value that low duty pressure switch is measured is less than the first preset pressure value
When, that is, the oil pressure of EH oil systems be less than this first protection value, send alarm, join the stand-by pump for opening another oil pump branch road, with
This ensures the oil pressure of EH oil systems.
Low two-value pressure switch is connected with distributor, whether is less than the second preset pressure value for detecting system pressure value,
It can set when the low two-value pressure switch more than 2/3rds quantity is less than the second preset pressure value, send protection act,
Steam turbine trips, and shuts down.Low two-value pressure switch at least includes first pressure switch, second pressure switch, the 3rd pressure switch,
First pressure switch, second pressure switch, the 3rd pressure switch are connected by single pipeline with distributor respectively, can be connected
At the different connectors of distributor diverse location, the other parts or component being directly connected in distributor can also be connected to
Place, can detect the pressure value of distributor diverse location, each pressure switch test position of low two-value pressure switch is more complete
Face, test position is more reasonable, comprehensive, and the accuracy of detection is improved；Connected respectively by single pipeline, a pipeline occurs
Failure does not interfere with the detection of other pipelines, can equally detect the pressure value at distributor, safer, reliable；One
Pipeline is leaked, and only needs maintenance failure pipeline as early as possible, and other pipelines are intact, are not in direct halting problem, risk
It is smaller, maintenance cost reduction；Without changing pressure switch component and its position, it need to only change in low two-value pressure switch and press individually
The connected mode of power switch, changes smaller, connects relatively simple.
The utility model also provides a kind of steam turbine, including machine body and the EH oil systems for being installed on machine body, the EH
Oil system is specially any of the above-described kind of EH oil system.Because above-mentioned EH oil systems have above-mentioned technique effect, with EH oil
The steam turbine of system should also have corresponding technique effect.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of connection diagram of typical EH oil systems in the prior art；
The connection diagram for the EH oil systems that Fig. 2 is provided by a kind of embodiment in the utility model.
Marked in accompanying drawing as follows：
01- fuel tanks, 02- distributors, 03- pressure switches component, 04- recirculation conduits, 05- oil pumps；
1- fuel tanks, 2- distributors, 3- first pressures switch, 4- main-piping pressures switch, 5- second pressures switch, 6- the 3rd are pressed
Power switch, the low duty pressure switches of 7-, 8- shut-off valves, 9- oil pumps, 10- filter screens, 11- check-valves, 12- energy modules component, 13-
Pressure gauge, 14- normal close valves, 15- main pipe recirculation conduits on the spot.
Embodiment
Core of the present utility model is to provide a kind of EH oil systems, is effectively improved security of EH oil systems etc. and asks
Topic；Another core of the present utility model, which is to provide, a kind of includes the steam turbine of above-mentioned EH oil systems.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
It refer to Fig. 2, the connection signal for the EH oil systems that Fig. 2 is provided by a kind of embodiment in the utility model
Figure.
In a kind of embodiment, EH oil systems provided by the utility model, including fuel tank 1, distributor 2, pressure
Power switch module, distributor 2 is connected with fuel tank 1, typically at least including three branch roads, and two of which branch road is to be connected with oil pump 9
The branch road of oil pump 9, the work of a usual oil pump 9 branch road.There is a branch road to be recycled for main pipe between distributor 2 and fuel tank 1
Pipeline 15, fuel tank 1 and distributor 2 are directly connected to.Pressure switch component is connected with distributor 2, for detect EH oil systems with
The pressure value of pipeline.Pressure switch component includes main-piping pressure switch 4, low duty pressure switch 7, low two-value pressure switch, female
Pipe pressure value, the first preset pressure value, the second preset pressure value are sequentially reduced, such as main-piping pressure value is 10Mpa, and first presets
Pressure value is 9.2Mpa, and the second preset pressure value is 7.8Mpa, and specific pressure value is unrestricted, can be according to practical situations
Depending on.Main-piping pressure switch 4 is directly connected to distributor 2, for detecting main-piping pressure value, pressure value when being normal work.
Whether low duty pressure switch 7 is directly connected to distributor 2, for detecting system pressure value less than the first preset pressure value,
When the pressure values that low duty pressure switch 7 is measured are less than the first preset pressure value, that is, EH oil systems oil pressure less than this
One protection value, sends alarm, and connection is opened the stand-by pump of another branch road of oil pump 9, ensured the oil pressure of EH oil systems with this.
Low two-value pressure switch is connected with distributor 2, whether is less than the second preset pressure value for detecting system pressure value,
It can set when the low two-value pressure switch more than 2/3rds quantity is less than the second preset pressure value, send protection act,
Steam turbine trips, and shuts down.Low two-value pressure switch at least includes first pressure switch 3, second pressure and switchs the 5, the 3rd pressure and open
6 are closed, first pressure switch 3, second pressure switch the 5, the 3rd pressure switch 6 and be connected respectively by single pipeline with distributor 2,
At the different connectors that the diverse location of distributor 2 can be connected to, the other portions being directly connected in distributor 2 can also be connected to
At part or component, the pressure value of the diverse location of distributor 2, each pressure switch detection of low two-value pressure switch can be detected
Position is more comprehensive, and test position is more reasonable, comprehensive, and the accuracy of detection is improved；Connected respectively by single pipeline, one
Bar pipeline, which breaks down, does not interfere with the detection of other pipelines, can equally detect the pressure value at distributor 2, more pacify
Entirely, reliably；One pipeline is leaked, and only needs maintenance failure pipeline as early as possible, and other pipelines are intact, are not in directly to stop
Machine problem, risk is smaller, maintenance cost reduction；Without changing pressure switch component and its position, low two duty pressure only need to be changed
The connected mode that individual pressure is switched in switch, changes smaller, connects relatively simple.
Above-mentioned EH oil systems are only a kind of preferred schemes, are specifically not limited thereto, on this basis can be according to actual need
Make with targetedly adjusting, so as to obtain different embodiments, first pressure switchs the connector of 3 and distributor 2
It is directly connected to, the connected mode of first pressure switch 3 and position can not change, and be directly connected with distributor 2, directly detect
Pressure value at distributor 2, is connected relatively simple.
On the basis of above-mentioned embodiment, those skilled in the art can be according to the difference of specific occasion, to EH
Oil system carries out some changes, and main-piping pressure switch 4, low duty pressure switch 7, first pressure switch 3 pass through a probe tube
At the connector for being connected to distributor 2, main-piping pressure switch 4, low duty pressure switch 7, first pressure switch 3 are connected, and pass through
Common probe tube is connected with distributor 2, simplifies structure.And probe tube is connected by weld ell with distributor 2, connection compared with
To be close, leakage is difficult, it is safer.
Obviously, under the guidance of this thought, those skilled in the art can be according to the difference of specific occasion to above-mentioned
Embodiment carries out some changes, and second pressure switch 5 is connected at the energy module component 12 being connected with distributor 2,
Energy module component 12 is connected with distributor 2, the pressure value at the pressure value at energy module component 12, that is, distributor 2,
Therefore the pressure at distributor 2 can be obtained by detecting the pressure of energy module component 12, connected more convenient.
It is important to note that EH oil systems provided by the utility model are not intended to be limited to such a situation, energy
Modular assembly 12 is connected with pressure gauge 13 on the spot, and pressure gauge 13 detects and shown the pressure value of energy module component 12 on the spot, the
Two pressure switches 5 are connected to energy module component 12 with that on the connecting pipe of pressure gauge 13 on the spot, can compare second pressure and open
The pressure value and the pressure value of pressure gauge 13 on the spot of 5 detections are closed, if both are identical or almost identical, detection is may determine that
Accuracy, it is safer.
EH oil systems provided by the utility model, in the case of other parts are immovable, fuel tank 1 and distributor 2
Between connected by least three branch roads, two of which branch road is the branch road of oil pump 9 for being connected with oil pump 9, and one is that main pipe is followed again
Endless tube road 15, in the prior art, main pipe recirculation conduit 15 is as emergency use, without using this practicality is new during unit operation
The 3rd pressure switch 6 is connected on main pipe recirculation conduit 15 in type, and set on the pipeline between junction and fuel tank 1
Normal close valve 14 is equipped with, the connection of cut-off and fuel tank 1, main pipe recirculation conduit 15 is connected as the probe tube at detection distributor 2
Convenient, detection is accurate.
For the EH oil systems in each above-mentioned embodiment, the quantity of normal close valve 14 is unrestricted, can be answered according to actual
Depending on situation.Preferably, the quantity of normal close valve 14 is two, and normal close valve 14 can be ball valve or other other suitable valves
Door, such as stop valve, and two normal close valves 14 are connected in series, and only with a normal close valve 14, security reliability is relatively low, uses three
Individual normal close valve 14 is more wasted, and is not compared, and two normal close valves 14 can meet requirement.
In order to further optimize above-mentioned technical proposal, shut-off valve 8 is in series between oil pump 9 and fuel tank 1, normal close valve 14 is with dividing
Shut-off valve 8 is in series between orchestration 2, that is to say, that be provided with shut-off valve 8, such as isolating valve at each part, can control
The break-make of pipeline components, more easily control piper break-make where it.
On the basis of each above-mentioned specific embodiment, set on the pipeline between the branch road oiling pump 9 of oil pump 9 and distributor 2
Filter screen 10 is equipped with, the impurity that can be crossed in oil strain is not easily blocked pipeline.Non-return has been sequentially connected in series between filter screen 10 and distributor 2
Valve 11 and shut-off valve 8, shut-off valve 8 can control the break-make of filter screen 10, and check-valves 11 can prevent oily refluence, safer.
Based on the EH oil systems provided in above-described embodiment, the utility model additionally provides a kind of steam turbine, the steam turbine
Including machine body and the EH oil systems of machine body are installed on, wherein EH oil systems are any one EH oil system in above-described embodiment
System.The EH oil systems in above-described embodiment are employed due to the steam turbine, thus the beneficial effect of the steam turbine refer to it is above-mentioned
Embodiment.
, it is necessary to which orientation or position relationship that instruction is waited between explanation, term are base in description of the present utility model
In orientation shown in the drawings or position relationship, be for only for ease of description the utility model and simplify describe, rather than indicate or
Specific orientation must be had, with specific azimuth configuration and operation by implying the device or element of meaning, therefore it is not intended that
To limitation of the present utility model.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
1. a kind of EH oil systems, including fuel tank (1), be connected with the fuel tank (1) distributor (2), with the distributor (2) even
The pressure switch component connect, the pressure switch component includes being directly connected for detecting main-piping pressure with the distributor (2)
The main-piping pressure switch (4) and the distributor (2) of value are directly connected for whether detecting system pressure value is preset less than first
The low duty pressure switch (7) of pressure value, being connected to the distributor (2) detecting system pressure value, whether to be less than second pre-
If the low two-value pressure switch of pressure value, the main-piping pressure value, first preset pressure value, second preset pressure value
It is sequentially reduced, it is characterised in that the low two-value pressure switch at least includes first pressure switch (3), second pressure switch
(5), the 3rd pressure switch (6), the first pressure switch (3), second pressure switch (5), the 3rd pressure switch
(6) it is connected respectively by single pipeline with the distributor (2).
2. EH oil systems according to claim 1, it is characterised in that the first pressure switch (3) and the distributor
(2) connector is directly connected to.
3. EH oil systems according to claim 2, it is characterised in that the main-piping pressure switch (4), the low value pressure
Power switch (7), first pressure switch (3) are connected at the connector of the distributor (2) by a probe tube, and
Connected by weld ell.
4. EH oil systems according to claim 1, it is characterised in that the second pressure switch (5) be connected to it is described
Energy module component (12) place of distributor (2) connection.
5. EH oil systems according to claim 4, it is characterised in that the energy module component (12) is connected with to be pressed on the spot
Power table (13), the second pressure switch (5) is connected to the energy module component (12) and the pressure gauge on the spot (13)
On connecting pipe.
6. the EH oil systems according to claim any one of 1-5, it is characterised in that the fuel tank (1) and the distributor
(2) connected between by least three branch roads, branch road described in two of which is oil pump (9) branch road for being connected with oil pump (9), one
Bar is main pipe recirculation conduit (15), and the 3rd pressure switch (6) is connected on the main pipe recirculation conduit (15), and
Normal close valve (14) is provided with pipeline between junction and the fuel tank (1).
7. EH oil systems according to claim 6, it is characterised in that the quantity of the normal close valve (14) is two, and
It is connected in series.
8. EH oil systems according to claim 7, it is characterised in that connected between the oil pump (9) and the fuel tank (1)
There is shut-off valve (8), shut-off valve (8) is in series between the normal close valve (14) and the distributor (2).
9. EH oil systems according to claim 8, it is characterised in that the oil pump (9) and institute on oil pump (9) branch road
State and filter screen (10) is provided with the pipeline between distributor (2), be sequentially connected in series between the filter screen (10) and the distributor (2)
There are check-valves (11) and shut-off valve (8).
10. a kind of steam turbine, including machine body and the EH oil systems for being installed on the machine body, it is characterised in that the EH
Oil system is specially the EH oil systems described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621286702.1U CN206368861U (en) | 2016-11-28 | 2016-11-28 | A kind of steam turbine and its EH oil system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621286702.1U CN206368861U (en) | 2016-11-28 | 2016-11-28 | A kind of steam turbine and its EH oil system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206368861U true CN206368861U (en) | 2017-08-01 |
Family
ID=59390014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621286702.1U Active CN206368861U (en) | 2016-11-28 | 2016-11-28 | A kind of steam turbine and its EH oil system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206368861U (en) |
-
2016
- 2016-11-28 CN CN201621286702.1U patent/CN206368861U/en active Active
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