CN106969009B - A kind of steam turbine is high, intermediate pressure main stop valve Hough connector - Google Patents
A kind of steam turbine is high, intermediate pressure main stop valve Hough connector Download PDFInfo
- Publication number
- CN106969009B CN106969009B CN201710389893.7A CN201710389893A CN106969009B CN 106969009 B CN106969009 B CN 106969009B CN 201710389893 A CN201710389893 A CN 201710389893A CN 106969009 B CN106969009 B CN 106969009B
- Authority
- CN
- China
- Prior art keywords
- ring flange
- valve
- hough
- hole
- cavity
- 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.)
- Active
Links
- 230000004323 axial length Effects 0.000 claims description 2
- 208000002925 dental caries Diseases 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B1/00—Devices for securing together, or preventing relative movement between, constructional elements or machine parts
- F16B1/02—Means for securing elements of mechanisms after operation
Abstract
The present invention discloses that a kind of steam turbine is high, Hough connector of intermediate pressure main stop valve, the Hough connector is split-type Hough connector, the inner cavity of the Hough connector includes epicoele and cavity of resorption, the epicoele and cavity of resorption are stepped hole setting, the epicoele is used to embed the convex shoulder of valve rod, the cavity of resorption is for embedding ring flange, and the ring flange with the piston rod for being fixedly connected.Two cavitys of Hough connector are set as embedded cavity, distribution is for being fixedly connected with valve rod and ring flange, the piston rod of oil motor and spring spool are carried out integrally connected by hexagon socket head cap screw by ring flange, can be avoided the crack conditions that generation is bolted merely in the prior art.
Description
Technical field
The present invention relates to steam turbine equipment technical fields, more particularly to a kind of high, intermediate pressure main stop valve Hough connector.
Background technique
Steam turbine main inlet throttle-stop valve is the important institution of distributing gas of Turbo-generator Set, major function be in the state of emergency rapidly
Cut-off flows to the steam stream of steam turbine, guarantees the safety of steam turbine.It is divided into high-pressure main throttle valve and intermediate pressure main stop valve according to device structure,
High-pressure main throttle valve mainly controls the circulation and isolation into high pressure cylinder main steam, and intermediate pressure main stop valve control enters intermediate pressure cylinder reheating and steams
The circulation and isolation of vapour have the function of crisis blocking.
In normal inspection test, staff scene finds that intermediate pressure main stop valve oil motor and valve rod Hough connect on the right side of unit
Connection device bolt complete rupture (totally 12), Hough device falls off, and intermediate pressure main stop valve and oil motor connecting portion disengage, middle pressure master
Porthole is shown in a fully open operation, and spring spool is in free state in Quan Guanwei, oil motor, and the intermediate pressure main stop valve is in out of control at this time
State can not close the steam that porthole isolation enters intermediate pressure cylinder if unit is abnormal tripping, i.e. steam turbine is in great
In security risk.
There are two types of recovery schemes in the prior art, and porthole is shown in a fully open operation under vapor action, restores connection scheme
One: using bolt top or drawing closing to Quan Guanwei porthole, porthole is connected with oil motor, spring spool；Scheme two: oil is used
The interim connecting spring sleeve of motivation is raised up to standard-sized sheet position, and Hough part and porthole, spring spool phase will be connected by reusing bolt
Even, it is closed using movement test solenoid valve slowly closing porthole up to complete, then formal bolt restorer operation is installed.
But above-mentioned two equal Shortcomings of recovery scheme, scheme one are in upwards under middle pressure steam effect because of porthole
Active force, bolt can not overcome steam pressure porthole to be difficult to activity；Scheme two is temporarily connected by two kinds by oil motor, bullet
Spring room, porthole are connected as one, and porthole bite is in about 80% open position during the shutdown process, are analyzed as oxide skin bite,
It is repeatedly slipped after activity because bolt installation is limited, porthole is disengaged again to standard-sized sheet.
Analysis and summary both the above scheme, scheme one only can not overcome vapor action power by bolt, though and scheme two
So porthole can be movable after connection, but because there are oxide skin bites, the more weak reliability of connection type is extremely low, and is implementing
It is middle that because that need to be replaced using bolt, security risk is larger in operation, though porthole completely close after there is still a need for remove interim spiral shell
Bolt restores the normal connection of porthole so that guarantee can be with completely open and close, and enforcement difficulty is very big.Therefore, reheat emergency valve valve how is avoided
It is current urgent problem to be solved that unexpected fracture, which occurs, with oil motor.
Summary of the invention
The object of the present invention is to provide a kind of intermediate pressure main stop valve and the Hough connectors of the similar structure high-pressure main throttle valve, lead to
It crosses newly-designed two-flap type Hough connector connection and the cooperation of valve rod convex shoulder is caught in the intracavitary of Hough connector top, Hough connection
The lower part of part and newly-designed ring flange are cooperatively connected, so that high, reheat emergency valve and oil motor be avoided to fall off or occurring
Online processing is not shut down when surprisingly falling off.
To achieve the above object, the present invention provides the following technical scheme that
The present invention provides a kind of high, intermediate pressure main stop valve Hough connector, the Hough connector is split-type Hough
Connector, the inner cavity of the Hough connector include epicoele and cavity of resorption, and the epicoele and cavity of resorption are stepped hole setting, it is described on
Chamber is used to embed the convex shoulder of valve rod, and the cavity of resorption is used for and the fixed company of the piston rod for embedding ring flange, the ring flange
It connects.
Preferably, the Hough connector includes left valve and right valve, the axis pair of the left valve and right valve along the inner cavity
Claim to be distributed, the junction of the left valve and right valve is fastened by bolts；
Preferably, the epicoele of the inner cavity is the first stepped hole, and first stepped hole includes outside the first inner hole and first
Hole, the diameter of first exit orifice are less than the diameter of first inner hole；
Preferably, the cavity of resorption of the inner cavity is the second stepped hole, and second stepped hole includes in the second exit orifice and second
Hole, the diameter of second exit orifice are less than the diameter of second inner hole；
Preferably, second inner hole, the second exit orifice, the first inner hole, the first exit orifice diameter be sequentially reduced；
Preferably, the ring flange is boss ring flange, is provided with through-hole among the boss ring flange, the through-hole
Diameter is equal with the diameter of first inner hole, and the outer diameter of the boss ring flange is equal with the diameter of second inner hole；
Preferably, the end face of the boss ring flange is provided with counter sink along axial direction, and the counter sink is in the boss flange
On the end face of disk circumferentially；
Preferably, the counter sink is at least arranged two, and the counter sink is uniformly distributed on the boss ring flange；
Preferably, the deep equality of the height of the boss ring flange boss bottom and second inner hole；
Preferably, the deep equality of the axial length of the convex shoulder of the valve rod and first inner hole.
The present invention achieves following technical effect in terms of existing technologies:
Hough stud connector design of the invention is specifically as follows two-flap type Hough connector, Hough connector at split-type
Two cavitys be set as embedded cavity, be distributed for being fixedly connected with valve rod and ring flange, ring flange passes through hexagon socket head cap screw
The piston rod of oil motor and spring spool are subjected to integrally connected, the avris of Hough connector is fastened by bolt, this
Connection is coated and fixed, can guarantee being bonded for ring flange and valve rod, can be avoided in the prior art merely by bolt company
The raw crack conditions of sending and receiving.
And during interim emergency recovery, it is only necessary to which Hough connector is opened the corresponding accessory of replacement can be true
The normal operation for protecting equipment, it is more more convenient than traditional bolt emergency recovery operation, and stability and safety after fixing
It is higher.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the connection schematic diagram of the Hough connector of intermediate pressure main stop valve of the embodiment of the present invention；
Fig. 2 is the structural schematic diagram of the Hough connector of intermediate pressure main stop valve of the embodiment of the present invention；
Fig. 3 is the flange arrangement schematic diagram of the Hough connector of intermediate pressure main stop valve of the embodiment of the present invention；
Wherein, 1- Hough connector, 2- boss ring flange, 3- bolt, 4- convex shoulder, 5- piston rod, 6- counter sink, on 7-
Chamber, 8- cavity of resorption.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of high, intermediate pressure main stop valve Hough connectors, to avoid high, reheat emergency valve valve
Accident occurs with oil motor to fall off or do not shut down online processing when accident occurs and falls off.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment 1:
As shown in Figure 1-3, the present embodiment is to the present invention a kind of structure and work of high, intermediate pressure main stop valve Hough connector
Principle is described in detail, with the ultra supercritical of 1000MW unit, a resuperheat, single shaft, four cylinders, four steam discharge, directly sky
For cold type steam turbine.
As shown in Figure 1, present embodiments providing a kind of high, intermediate pressure main stop valve Hough connector, the Hough of the present embodiment
Valve rod is installed on 1 top of connector, and lower part embeds boss ring flange 2, and boss ring flange 2 and the piston rod 5 of oil motor pass through interior six
Corner bolt connection, oil motor are connect with spring spool, this is the novel connection type of the present embodiment.
Hough connector 1 is the newly-designed connector of embodiment itself, replaces traditional stay bolt integrally connected, ring flange
It is also newly-designed boss ring flange 2, the design of boss ring flange 2 is to depend on Hough connector 1, enables Hough connector 1
Enough connect the piston rod 5 of oil motor.
As shown in Fig. 2, specifically introducing the structure of Hough connector 1, Hough connector 1 is the connection of split-type Hough
Part 1, Hough connector 1 include left valve and right valve, and the axisymmetrical of left valve and right valve along inner cavity is distributed, the connection of left valve and right valve
Place is fastened by bolt 3, the left valve and right valve structure of Hough connector 1 be it is identical, utilize the fixation of this split-type
Connection, so that the effect of connection is more firm, and installation and removal are very convenient, convenient for safeguarding.
The inner cavity of Hough connector 1 includes epicoele 7 and cavity of resorption 8, and epicoele 7 and cavity of resorption 8 are stepped hole setting, and epicoele 7 is used
In the convex shoulder 4 of embedded valve rod, cavity of resorption 8 is for embedding boss ring flange 2, and boss ring flange 2 with piston rod 5 for being fixedly connected.
The cavity body structure of specific Hough connector 1 is that the epicoele 7 of inner cavity is the first stepped hole, and the first stepped hole includes
First inner hole and the first exit orifice, the diameter of the diameter of the first exit orifice less than the first inner hole；The cavity of resorption 8 of inner cavity is the second stepped hole,
Second stepped hole includes the second exit orifice and the second inner hole, the diameter of the diameter of the second exit orifice less than the second inner hole；Above-mentioned stepped hole
Size be the second inner hole, the second exit orifice, the first inner hole, the first exit orifice diameter be sequentially reduced.
The design of above-mentioned Hough connector 1 is specifically in the ultra supercritical of 1000MW unit, resuperheat, single shaft, four
In four steam discharge of cylinder, Direct Air-Cooled formula steam turbine, the specific size of Hough connector 1 are as follows: the outer diameter of Hough connector 1 is Φ
3 hole of bolt of 313mm, high 139.5mm, left valve and right valve junction is directly Φ 24mm, wherein 7 depth of epicoele is 80mm, under
8 depth of chamber is 59.5mm, two stepped holes of epicoele 7 having a size of the first inner hole Φ 120mm, the first exit orifice Φ 73mm, cavity of resorption 8
Two stepped holes are having a size of the second inner hole Φ 244mm, the second exit orifice Φ 204mm；Wherein the second outer hole depth is 30mm, in second
Hole depth is 29.5mm.
7 size of epicoele of Harvard connector is according to the size design of valve rod convex shoulder 4, and 8 size of cavity of resorption is in order to embedded
What newly-designed boss ring flange 2 designed, as shown in figure 3, boss ring flange 2 is designed to boss ring flange 2, boss ring flange 2
Centre is provided with through-hole, and the diameter of through-hole is equal with the diameter of the first inner hole, and the outer diameter of boss ring flange 2 is straight with the second inner hole
Diameter is equal；The end face of boss ring flange 2 is provided with counter sink 6 along axial direction, counter sink 6 on the end face of boss ring flange 2 circumferentially
Distribution；Counter sink 6 is provided with 6 in the present embodiment, and 6 counter sinks 6 are uniformly distributed on boss ring flange 2, guarantees boss method
Blue being stably connected with to piston rod 5 of disk 2.
Specific connection procedure of the present embodiment Hough connector 1 in intermediate pressure main stop valve are as follows:
Firstly, removing original part adjusts gasket, the boss ring flange 2 with boss is processed as (see figure according to design material
3), 2 top of boss ring flange processes countersunk head, using hexagon socket head cap screw 3 by boss ring flange 2 and oil motor piston rod 5, spring pocket
The fastening of cylinder room is linked together；Hough connector 1 be two-flap type structure, epicoele 7 and valve rod convex shoulder 4 cooperation is caught in wherein, cavity of resorption 8 with
Boss ring flange 2 cooperates, and is stuck on flange boss, the boss that 1 liang of valve of Hough connector is welded by two sides is fastened using bolt 3
It is integrated (see Fig. 1).
After oil motor and spring spool are integrated by new flanged joint, pass through movement test solenoid valve after opening oil circuit
Oil motor is opened into fully open position, causes personnel's to prevent from occurring in installation process unit tripping oil circuit interruption emergency case
Security risk takes out interim pad after lower portion thereof installation temporary cushion block support prevents tip out, the installation of Hough connector 1 from fixing
Block site clearing, by movement test solenoid valve activity porthole, in activity to 80% aperture bite still occurs for porthole, using fast
Bite is gradually eliminated to complete and is closed after powered-down magnet valve Fast Activities porthole, and porthole switch flexibly restores to operate normally after activity.
Specific examples are applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Illustrate to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, according to
According to thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification
It should not be construed as limiting the invention.
Claims (6)
1. a kind of steam turbine is high, the Hough connector of intermediate pressure main stop valve, which is characterized in that the Hough connector is split-type Kazakhstan
Husband's connector, the inner cavity of the Hough connector include epicoele and cavity of resorption, and the epicoele and cavity of resorption are stepped hole setting, described
Epicoele is used to embed the convex shoulder of valve rod, and the cavity of resorption is for embedding ring flange, and the ring flange is for the piston rod with oil motor
It is fixedly connected；The ring flange is boss ring flange, and the end face of the boss ring flange is provided with counter sink, the countersunk head along axial direction
Hole on the end face of the boss ring flange circumferentially；
The epicoele of the inner cavity is the first stepped hole, and first stepped hole includes the first inner hole and the first exit orifice, the boss
Through-hole is provided among ring flange, the diameter of the through-hole is equal with the diameter of first inner hole, first exit orifice it is straight
Diameter is less than the diameter of first inner hole；
The cavity of resorption of the inner cavity be the second stepped hole, second stepped hole include the second exit orifice and the second inner hole, described second
The diameter of exit orifice is less than the diameter of second inner hole；The height of the boss ring flange boss bottom and second inner hole
Deep equality.
2. steam turbine according to claim 1 is high, the Hough connector of intermediate pressure main stop valve, which is characterized in that the Hough
Connector includes left valve and right valve, and the axisymmetrical of the left valve and right valve along the inner cavity is distributed, the left valve and right valve
Junction is fastened by bolts.
3. steam turbine according to claim 2 is high, the Hough connector of intermediate pressure main stop valve, which is characterized in that described second
Inner hole, the second exit orifice, the first inner hole, the first exit orifice diameter be sequentially reduced.
4. steam turbine according to claim 3 is high, the Hough connector of intermediate pressure main stop valve, which is characterized in that the boss
The outer diameter of ring flange is equal with the diameter of second inner hole.
5. steam turbine according to claim 4 is high, the Hough connector of intermediate pressure main stop valve, which is characterized in that the countersunk head
Hole is at least arranged two, and the counter sink is uniformly distributed on the boss ring flange.
6. steam turbine according to claim 5 is high, the Hough connector of intermediate pressure main stop valve, which is characterized in that the valve rod
Convex shoulder axial length and first inner hole deep equality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389893.7A CN106969009B (en) | 2017-05-27 | 2017-05-27 | A kind of steam turbine is high, intermediate pressure main stop valve Hough connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710389893.7A CN106969009B (en) | 2017-05-27 | 2017-05-27 | A kind of steam turbine is high, intermediate pressure main stop valve Hough connector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106969009A CN106969009A (en) | 2017-07-21 |
| CN106969009B true CN106969009B (en) | 2019-09-24 |
Family
ID=59326771
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710389893.7A Active CN106969009B (en) | 2017-05-27 | 2017-05-27 | A kind of steam turbine is high, intermediate pressure main stop valve Hough connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106969009B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203488364U (en) * | 2013-10-09 | 2014-03-19 | 中联重科股份有限公司 | Piston device and concrete pump |
| CN204060821U (en) * | 2014-08-21 | 2014-12-31 | 大唐黄岛发电有限责任公司 | A kind of 660MW turbine high-pressure governing valve connecting rod of transformation |
| CN205047258U (en) * | 2015-09-10 | 2016-02-24 | 大唐华银电力股份有限公司金竹山火力发电分公司 | A prevent connecting device soon for high pressure regulation steam valve |
| CN205422843U (en) * | 2016-04-08 | 2016-08-03 | 中国神华能源股份有限公司 | A connecting device and steam turbine that is used for steam turbine high pressure to adjust valve and servomotor |
| CN206036459U (en) * | 2016-07-20 | 2017-03-22 | 焦祥明 | Diameter -variable ha fujie casing |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6886805B2 (en) * | 2003-02-07 | 2005-05-03 | Fisher Controls International Llc | Rod connector assembly |
-
2017
- 2017-05-27 CN CN201710389893.7A patent/CN106969009B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203488364U (en) * | 2013-10-09 | 2014-03-19 | 中联重科股份有限公司 | Piston device and concrete pump |
| CN204060821U (en) * | 2014-08-21 | 2014-12-31 | 大唐黄岛发电有限责任公司 | A kind of 660MW turbine high-pressure governing valve connecting rod of transformation |
| CN205047258U (en) * | 2015-09-10 | 2016-02-24 | 大唐华银电力股份有限公司金竹山火力发电分公司 | A prevent connecting device soon for high pressure regulation steam valve |
| CN205422843U (en) * | 2016-04-08 | 2016-08-03 | 中国神华能源股份有限公司 | A connecting device and steam turbine that is used for steam turbine high pressure to adjust valve and servomotor |
| CN206036459U (en) * | 2016-07-20 | 2017-03-22 | 焦祥明 | Diameter -variable ha fujie casing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106969009A (en) | 2017-07-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP2192594B1 (en) | Drive system for safety valve | |
| CN106969009B (en) | A kind of steam turbine is high, intermediate pressure main stop valve Hough connector | |
| EP1241679B1 (en) | Upper T-box assembly for a nuclear reactor core spray system | |
| CN105952305A (en) | System and method capable of automatically closing fireproof door | |
| CN101566248A (en) | Fuel gas shutoff solenoid valve controller | |
| CN205841927U (en) | A kind of emergency cut-off valve control system | |
| CN102536350B (en) | Safety control method at urgent fault time of power supply of TRT (Top gas pressure Recovery Turbine) set automatic control system | |
| CN204372237U (en) | Novel prominent open type pilot valve | |
| CN106768915B (en) | The electric blasting valve ground polarity test method of satellite bipropellant propulsion system | |
| CN109595109A (en) | A kind of combination current-limiting type high pressure oil rail | |
| CN107725520B (en) | A kind of oil path control system of pitch oil motor | |
| CN209052639U (en) | Coal oven dithio-gas ammonium hydroxide cooling system | |
| RU189587U1 (en) | Device for mounting a blanket module on the vacuum vessel of a fusion reactor | |
| CN105047240A (en) | Nuclear-grade pump intake filter screen differential pressure protector of PWR nuclear power plant | |
| CN209569103U (en) | Marine diesel system and its high-pressure common-rail fuel system | |
| CN206754555U (en) | A kind of VV valves pneumatic actuator control system | |
| CN210948811U (en) | Emergency trip device | |
| CN211230564U (en) | Fastening device for steam valve of steam turbine | |
| CN108736493A (en) | Construction method, control system and the control method on power system security island | |
| CN217681883U (en) | On-line maintenance device for shutoff valve group of pipeline welding type steam turbine regulating security system | |
| CN210128117U (en) | Self-locking and anti-loosening device for open eye valve | |
| CN216811797U (en) | Tool for preventing unexpected shutdown in nuclear power station steam turbine generator test | |
| CN217681884U (en) | Integrated steam turbine adjusting safety system shutoff valve group device capable of being maintained on line | |
| CN107882646A (en) | Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method | |
| CN103151080B (en) | Self-tightening sealed structure for refueling water level control of reactor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |