CN106353100A - Test block for emergency trip system of steam turbine - Google Patents
Test block for emergency trip system of steam turbine Download PDFInfo
- Publication number
- CN106353100A CN106353100A CN201610967152.8A CN201610967152A CN106353100A CN 106353100 A CN106353100 A CN 106353100A CN 201610967152 A CN201610967152 A CN 201610967152A CN 106353100 A CN106353100 A CN 106353100A
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- Prior art keywords
- test block
- pressure
- valve
- pressure switch
- module
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- 238000012360 testing method Methods 0.000 title claims abstract description 123
- 239000003921 oil Substances 0.000 claims description 32
- 239000000523 sample Substances 0.000 claims description 29
- 239000010687 lubricating oil Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 description 8
- 241000521257 Hydrops Species 0.000 description 6
- 206010030113 Oedema Diseases 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 4
- 238000011065 in-situ storage Methods 0.000 description 3
- 230000007257 malfunction Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000009414 blockwork Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 210000004247 hand Anatomy 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention relates to the technical field of an emergency trip system of a steam turbine and discloses a test block for the emergency trip system of the steam turbine. The test block can be used for solving the problems of the present test block that the fault of a device channel on one side may influence the normal work on the other side because an oil inlet valve is shared by the channels on left and right sides and the channel on the other side also may be influenced if the overhauling is imperfect when the test block is overhauled and put into operation. The test block comprises an oil return header pipe, two manual valves, two solenoid valves, two pressure gages, four pressure switches, a first throttling hole, a second throttling hole, a first oil feeding valve and a second oil feeding valve, wherein the first oil feeding valve and the second oil feeding valve are respectively connected with the first throttling hole and the second throttling hole. The embodiment of the invention is suitable for the treatment process of the test block for the emergency trip system of the steam turbine.
Description
Technical field
The present invention relates to turbine emergency trip system technical field, more particularly, to a kind of turbine emergency trip system examination
Test block.
Background technology
Ets (emergency trip system, turbine emergency trip system) has three test block: eh
(electro hydraulic, electro-hydraulic) oil test block, lubricating oil test block and vacuum test block.Above three test block former
Reason all same, as shown in figure 1, each test block is arranged to the dual pathways.F is inlet valve, and j1, j2 are throttle orifice, and f1, f2 are
Hand-operated valve, s1, s2 are electromagnetic valve, and b1, b2 are pressure gauge, and k1, k2, k3, k4 are pressure switch.Test can be tried with Manual local
Test it is also possible to be tested by a test button distant place in master control room.When master control room passes through the test of a test button distant place, circuit has
It is ensured that will not test two-way simultaneously, when a examination of road is tested, another road also has defencive function for locking.Manually during in situ test, no
Can do two-way simultaneously, otherwise will cause false tripping machine.
Left and right sides passage due to test block shares an inlet valve f, when certain side apparatus channel failure, can affect another
Side normal work, needs to exit the protection of this test block when overhauling, if maintenance finishes there is maintenance imperfection when putting into operation,
Or another wing passage can be affected, for vacuum test block, because probe tube only has one, vacuum sampling tube is relatively
Long, and have multiple elbows, the resistance of probe tube is larger, in the presence of pipeline has hydrops, does coarse vacuum in thread test, there is
The simultaneously low possibility of pressure at both sides closing vacuum, causes the malfunction of coarse vacuum protection.
Content of the invention
Embodiments of the invention provide a kind of turbine emergency trip system test block, solve in existing test block, by
Share an inlet valve in left and right sides passage, when certain side apparatus channel failure, opposite side normal work can be affected, and if inspection
Repair to finish and when putting into operation, there is maintenance imperfection, still can affect the problem of another wing passage, additionally for vacuum test block
For, solve in the presence of pipeline has hydrops, do coarse vacuum in thread test, the asking of malfunction of coarse vacuum protection may be caused
Topic.
For reaching above-mentioned purpose, embodiments of the invention adopt the following technical scheme that
The present invention provides a kind of turbine emergency trip system test block, and described test block includes oil return house steward, two handss
Dynamic valve, two electromagnetic valves, two pressure gauges, four pressure switches, and first segment discharge orifice and the second throttle orifice,
Wherein, first manual valve in parallel and the first electromagnetic valve, one end is connected with described oil return house steward, the other end and first
Pressure gauge, first pressure switch, the 3rd pressure switch and first segment discharge orifice connect；
The second in parallel hand-operated valve and the second electromagnetic valve, one end is connected with described oil return house steward, the other end and second pressure
Table, second pressure switch, the 4th pressure switch and the second throttle orifice connect,
Described test block also includes: the first inlet valve and the second inlet valve,
Described first inlet valve and the second inlet valve, are connected with described first segment discharge orifice and the second throttle orifice respectively.
Optionally, described test block also includes the first probe tube and the second probe tube, and described first probe tube and second takes
Sample pipe is connected with described first inlet valve and the second inlet valve respectively.
Optionally, the diameter range of described first segment discharge orifice and the second throttle orifice is 0.5-0.8mm.
Optionally, the size of described first probe tube and the second probe tube be φ 14 × 2, in φ 10 × 2, φ 10 × 2
Any one.
Optionally, described test block includes the first module and the second module,
Described first module includes first manual valve in parallel and the first electromagnetic valve, the first oil return house steward that one end connects,
First pressure table that the other end connects, first pressure switch, the 3rd pressure switch and first segment discharge orifice, and with described first segment
The first inlet valve that discharge orifice connects；
Described second module includes the second hand-operated valve in parallel and the second electromagnetic valve, the second oil return house steward that one end connects,
Second pressure table that the other end connects, second pressure switch, the 4th pressure switch and the second throttle orifice, and with described second section
The second inlet valve that discharge orifice connects；
When described first module and the second module are carried out respectively in thread test, open described the first of described first module
Hand-operated valve or described first electromagnetic valve, or open described second hand-operated valve of described second module or described second electromagnetic valve,
When the tabular value of described first pressure table or described second pressure table drops to setting value respectively, described first pressure switch or/and
Described 3rd pressure switch closure, or described second pressure switch or/and described 4th pressure switch closure.
Optionally, described test block is eh oil test block, lubricating oil test block or vacuum test block.
By technique scheme, solve in existing test block, because left and right sides passage shares an inlet valve, when
Certain side apparatus channel failure, can affect opposite side normal work, and if maintenance finish when putting into operation exist maintenance imperfection,
Or the problem of another wing passage can be affected, for vacuum test block, solve in the presence of pipeline has hydrops, do
Coarse vacuum, in thread test, may cause the problem of the malfunction of coarse vacuum protection, because test block has two described in the embodiment of the present invention
Individual inlet valve, two wing passages independently, so not affecting opposite side when a certain side apparatus are faulty, because both sides are no direct
Physical link, therefore checking experiment are independent of each other.Further, since described test block both sides are separate, so the examination after maintenance
Test safety, search problem conveniently.Further, since described test block connects two inlet valves, both sides respectively by two probe tubes
Separate, opposite side will not be affected due to gauge pipe hydrops, it is to avoid cause coarse vacuum when doing coarse vacuum in thread test
The problem of false protection.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description
Accompanying drawing is used to provide a further understanding of the present invention, and constitutes the part of description, with following tool
Body embodiment is used for explaining the present invention together, but is not construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structure chart of prior art turbine emergency trip system test block；
Fig. 2 is a kind of structure chart of turbine emergency trip system test block provided in an embodiment of the present invention；
Fig. 3 is the structure chart of another kind turbine emergency trip system test block provided in an embodiment of the present invention；
Fig. 4 is the structure chart of another turbine emergency trip system test block provided in an embodiment of the present invention.
Description of reference numerals
F inlet valve j1 first segment discharge orifice
J2 the second throttle orifice f1, f2 hand-operated valve
S1, s2 electromagnetic valve b1, b2 pressure gauge
K1, k2, k3, k4 pressure switch m oil return house steward
h1First inlet valve h2Second inlet valve
C1 the first probe tube c2 the second probe tube
M1 the first oil return house steward m2 the second oil return house steward
41 first module 42 second module.
Specific embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.It should be appreciated that this place is retouched
The specific embodiment stated is merely to illustrate and explains the present invention, is not limited to the present invention.
The embodiment of the present invention provides a kind of turbine emergency trip system test block, as shown in Fig. 2 described test block includes
Oil return house steward m, two hand-operated valves f1, f2, two electromagnetic valves s1, s2, two pressure gauges b1, b2, four pressure switches k1, k2,
K3, k4, and first segment discharge orifice j1 and the second throttle orifice j2.
Wherein, described test block side include parallel connection first manual valve f1 and the first electromagnetic valve s1, one end with described time
Oily house steward m connects, and the other end switchs k1, the 3rd pressure switch k3 and first segment discharge orifice j1 with first pressure table b1, first pressure
Connect, described test block opposite side includes the second hand-operated valve f2 and the second electromagnetic valve s2 of parallel connection, one end and described oil return house steward m
Connect, the other end switchs k2, the 4th pressure switch k4 and the second throttle orifice j2 with second pressure table b2, second pressure and is connected, on
The structural principle stated in test block is identical with existing test block, except that the test block left and right sides in the embodiment of the present invention
Passage is independent, and described test block also includes the first inlet valve h1With the second inlet valve h2, respectively with described first segment discharge orifice j1 and
Second throttle orifice j2 connects.
Test block described in the embodiment of the present invention is identical with existing test block on structural principle with occupation mode, wherein, pressure
Power switch k1, k2, k3, k4 be connected as two " or " relation, that is, k1 and k3 be or relation, k2 and k4 is the relation of "or",
Then k1, k3 and k2, k4 are the relations of "AND", and such setting both can prevent false tripping, can prevent from refusing to jump again.Under normal circumstances,
Pressure oil delivers to pressure switch and dial gauge by inlet valve and throttle orifice, and dial gauge will indicate normal oil pressure, once oil pressure fall
Low, as long as the 4 of both sides pressure switches respectively have a switch motion, all chaser will be caused, thus tripping by turbine emergency
System makes unit stop, and plays a protective role.
Because test block described in the embodiment of the present invention has two inlet valves, two wing passages independently, so certain side sets
Have during fault and do not affect opposite side, due to the no direct physical link in both sides, therefore checking experiment is independent of each other.In addition, by
Separate in described test block both sides, so the experimental safe after maintenance, search problem conveniently.
In addition, as shown in figure 3, described test block also includes the first probe tube c1 and the second probe tube c2, described first takes
Sample pipe c1 and the second probe tube c2 respectively with described first inlet valve h1With the second inlet valve h2Connect.Because described test block is led to
Cross two probe tubes and connect two inlet valves respectively, both sides are separate, opposite side will not be affected due to gauge pipe hydrops, by
Do experiment in periodically, the hydrops of gauge pipe will not be serious, the correct reflected measurement value of pressure switch energy, due to described test block arrangement
Convenient, described test block may be installed the place close to condenser, and because pipeline is short, the gradient that gauge pipe is installed can guarantee that one
Straight technological requirement up, it is to avoid cause the problem of coarse vacuum false protection when doing coarse vacuum in thread test.
Further, since described test block adopts two inlet valves and two probe tubes so that the reliability of described test block
Improve, the circulation area for throttle orifice requires to reduce, and the diameter range of described first segment discharge orifice j1 and the second throttle orifice j2 is
0.5-0.8mm, the size of described first probe tube and the second probe tube is φ 14 × 2, any one in φ 10 × 2, φ 10 × 2
Individual.
When described test block is lubricating oil test block and vacuum test block, because the main pipe capacity of measured medium is big, right
For the probe tube of φ 14 × 2, the circulation area of probe tube accounts for the proportion very little for the main pipe circulation area of measured medium, pole
For holding a bit, directly measured medium is drained when described probe tube damages, very little to the pressure influence of the main pipe of measured medium.
So the circulation area for lubricating oil test block and vacuum test block throttle orifice can use larger, so can reduce in medium
Impurity cause the probability to blocked primary orifice.The purpose that described test block installs throttle orifice has two, and first when being test
The rate-of flow of backflow is not too large, return flow may be caused greatly very much too big and affect the pipeline after backflow or equipment, the
Two is to need for throttle orifice for eh test block, and three kinds of test block can be general mutually for convenience, reduces test block
Specification, just can reach general purpose by arranging throttle orifice.
When described test block is eh oil test block, because the circulation area of eh main pipe is little, the flow of eh oil pump is little, works as φ
During the direct opening oil extraction of 14 × 2 probe tubes, due to eh oil pressure height (reaching 14.5mpa), flow can be very big, eh oil pump exert oneself with
Do not go up, eventually cause eh oil pressure to reduce, so test block needs for installing throttle orifice, to control oil return stream when doing experiment
Amount, thus ensure eh oil main pipe pressure will not decline.
Because the diameter range of the throttle orifice of described eh oil test block is 0.5-0.8mm, circulation area is larger, is also applied for
Lubricating oil test block and vacuum test block, so all of test block can unify model, save the quantity of spare part, in addition,
Impurity can be avoided to block throttle orifice.
Optionally, described be segmented into independent two piece module it is also possible to be manufactured into one piece, be manufactured into when one piece and only need handle
Two-way independently, be still be manufactured into one piece of purpose be convenient existing corollary equipment is transformed, described test block arrangement
Position is constant, but reliability greatly increases.In addition, described test block is divided into two pieces of module mounting arrangements flexibly, can be according to scene
Practical situation is arranged.
Wherein, as shown in figure 4, described test block includes the first module 41 and the second module 42.
Wherein, described first module 41 includes the first manual valve f1 and the first electromagnetic valve s1 of parallel connection, one end connect the
One oil return house steward m1, first pressure table b1, first pressure switch k1, the 3rd pressure switch k3 and first throttle that the other end connects
Hole j1, and the first inlet valve h being connected with described first segment discharge orifice j11.
Described second module 42 includes the second hand-operated valve f2 and the second electromagnetic valve s2 of parallel connection, the second oil return that one end connects
House steward m2, second pressure table b2, second pressure switch k2, the 4th pressure switch k4 and the second throttle orifice j2 that the other end connects,
And the second inlet valve h being connected with described second throttle orifice j22.
Whether the pressure switch in order to test described test block works, and whether the passage of described test block is clear and coherent,
Described test block is carried out in thread test or in situ test.In order to avoid false tripping machine, two modules of described test block can not
Tested, including in thread test and in situ test, two modules all can not be tested simultaneously simultaneously.
When described first module 41 and the second module 42 are carried out respectively in thread test, open the institute of described first module 41
State first manual valve f1 or described first electromagnetic valve s1, or described second hand-operated valve f2 or the institute opening described second module 42
State the second electromagnetic valve s2, when the tabular value of described first pressure table b1 or described second pressure table b2 drops to setting value, institute respectively
State first pressure switch k1 or/and described 3rd pressure switch k3 closure, or described second pressure switch k2 or/and the described 4th
Pressure switch k4 closes.
In addition, when described first module 41 is carried out in thread test, when described first pressure table b1 drops to setting value,
Described first pressure switch k1 or/and described 3rd pressure switch k3 closure, if now main-piping pressure also as little as chaser value, described
Second pressure switch k2 or/and described 4th pressure switch k4 closure, described test block produces trip signal, thus passing through steamer
Machine emergency tripping system makes unit stop, and plays a protective role, so do not affect the protection of unit in thread test.Wherein, institute
State setting value to arrange for staff, do not limit here.
In order to avoid the first module 41 and the second module 42 are made in the maloperation of thread test it is not recommended that in unit operation simultaneously
In in local operation first manual valve or the second hand-operated valve, after the completion of described first module test confirm pressure switch (k1,
K3 the test of described second module can just be done after) recovering normally.
Described test block can be respectively mounted due to including two modules, can be according to field condition flexible arrangement, thus solving
The narrow and small problem of space for maintenance of having determined.
Describe the preferred embodiment of the present invention above in association with accompanying drawing in detail, but, the present invention is not limited to above-mentioned reality
Apply the detail in mode, in the range of the technology design of the present invention, multiple letters can be carried out to technical scheme
Monotropic type, these simple variant belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy no longer separately illustrates.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it equally should be considered as content disclosed in this invention.
Claims (6)
1. a kind of turbine emergency trip system test block, described test block includes oil return house steward, two hand-operated valves, two electromagnetism
Valve, two pressure gauges, four pressure switches, and first segment discharge orifice and the second throttle orifice,
Wherein, first manual valve in parallel and the first electromagnetic valve, one end is connected with described oil return house steward, the other end and first pressure
Table, first pressure switch, the 3rd pressure switch and first segment discharge orifice connect；
The second in parallel hand-operated valve and the second electromagnetic valve, one end is connected with described oil return house steward, the other end and second pressure table, the
Two pressure switches, the 4th pressure switch and the second throttle orifice connect,
It is characterized in that, described test block also includes: the first inlet valve and the second inlet valve,
Described first inlet valve and the second inlet valve, are connected with described first segment discharge orifice and the second throttle orifice respectively.
2. turbine emergency trip system test block according to claim 1 is it is characterised in that described test block also includes
First probe tube and the second probe tube, described first probe tube and the second probe tube are entered with described first inlet valve and second respectively
Fuel tap connects.
3. turbine emergency trip system test block according to claim 1 it is characterised in that described first segment discharge orifice and
The diameter range of the second throttle orifice is 0.5-0.8mm.
4. turbine emergency trip system test block according to claim 1 it is characterised in that described first probe tube and
The size of the second probe tube is φ 14 × 2, any one in φ 10 × 2, φ 10 × 2.
5. turbine emergency trip system test block according to claim 1 is it is characterised in that described test block includes
One module and the second module,
Described first module includes first manual valve in parallel and the first electromagnetic valve, the first oil return house steward that one end connects, another
First pressure table that end connects, first pressure switch, the 3rd pressure switch and first segment discharge orifice, and with described first segment discharge orifice
The first inlet valve connecting；
Described second module includes the second hand-operated valve in parallel and the second electromagnetic valve, the second oil return house steward that one end connects, another
Second pressure table that end connects, second pressure switch, the 4th pressure switch and the second throttle orifice, and with described second throttle orifice
The second inlet valve connecting；
When described first module and the second module are carried out respectively in thread test, open the described first manual of described first module
Valve or described first electromagnetic valve, or open described second hand-operated valve of described second module or described second electromagnetic valve, work as institute
State first pressure table or the tabular value of described second pressure table drops to setting value respectively, described first pressure switchs or/and described
3rd pressure switch closure, or described second pressure switch or/and described 4th pressure switch closure.
6. turbine emergency trip system test block according to claim 1 is it is characterised in that described test block is electro-hydraulic
Eh oil test block, lubricating oil test block or vacuum test block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967152.8A CN106353100A (en) | 2016-10-28 | 2016-10-28 | Test block for emergency trip system of steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967152.8A CN106353100A (en) | 2016-10-28 | 2016-10-28 | Test block for emergency trip system of steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106353100A true CN106353100A (en) | 2017-01-25 |
Family
ID=57864773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610967152.8A Pending CN106353100A (en) | 2016-10-28 | 2016-10-28 | Test block for emergency trip system of steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106353100A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107462413A (en) * | 2017-09-18 | 2017-12-12 | 广州华润热电有限公司 | A kind of experiment detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100847116B1 (en) * | 2008-02-22 | 2008-07-18 | 황창성 | Comprehensive test equipment for emergency trip system of electric power plant |
| CN102877896A (en) * | 2012-10-11 | 2013-01-16 | 沈翀 | Trip protection system of steam turbine in emergency situations |
| CN204064698U (en) * | 2014-09-15 | 2014-12-31 | 中国神华能源股份有限公司 | A kind of online test unit of steam turbine protection |
| CN105464722A (en) * | 2016-01-28 | 2016-04-06 | 山东中实易通集团有限公司 | Turbine emergency trip system and method applicable to unit APS control |
| CN206177588U (en) * | 2016-10-28 | 2017-05-17 | 中国神华能源股份有限公司 | Critical tripping operation systematic testing piece of steam turbine |
-
2016
- 2016-10-28 CN CN201610967152.8A patent/CN106353100A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100847116B1 (en) * | 2008-02-22 | 2008-07-18 | 황창성 | Comprehensive test equipment for emergency trip system of electric power plant |
| CN102877896A (en) * | 2012-10-11 | 2013-01-16 | 沈翀 | Trip protection system of steam turbine in emergency situations |
| CN204064698U (en) * | 2014-09-15 | 2014-12-31 | 中国神华能源股份有限公司 | A kind of online test unit of steam turbine protection |
| CN105464722A (en) * | 2016-01-28 | 2016-04-06 | 山东中实易通集团有限公司 | Turbine emergency trip system and method applicable to unit APS control |
| CN206177588U (en) * | 2016-10-28 | 2017-05-17 | 中国神华能源股份有限公司 | Critical tripping operation systematic testing piece of steam turbine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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Application publication date: 20170125 |