CN106969009A - A kind of steam turbine is high, the Hough connector of intermediate pressure main stop valve - Google Patents
A kind of steam turbine is high, the Hough connector of intermediate pressure main stop valve Download PDFInfo
- Publication number
- CN106969009A CN106969009A CN201710389893.7A CN201710389893A CN106969009A CN 106969009 A CN106969009 A CN 106969009A CN 201710389893 A CN201710389893 A CN 201710389893A CN 106969009 A CN106969009 A CN 106969009A
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- Prior art keywords
- ring flange
- hough
- connector
- intermediate pressure
- valve
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- 230000004323 axial length Effects 0.000 claims description 2
- 208000002925 dental caries Diseases 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 238000002955 isolation Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000008859 change 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
- 230000008569 process Effects 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 a kind of steam turbine height, the Hough connector of intermediate pressure main stop valve, the Hough connector is split-type Hough connector, the inner chamber of the Hough connector includes epicoele and cavity of resorption, the epicoele and cavity of resorption are that shoulder hole is set, the epicoele is used for the convex shoulder for embedding valve rod, the cavity of resorption is used to embed ring flange, and the ring flange is used to be fixedly connected with the piston rod.Two cavitys of Hough connector are set to embedded cavity, it is distributed for being fixedly connected with valve rod and ring flange, the piston rod of servomotor and spring spool are carried out integrally connected by ring flange by hexagon socket head cap screw, can avoid being bolted merely the crack conditions of generation in the prior art.
Description
Technical field
The present invention relates to steam turbine equipment technical field, more particularly to a kind of high, intermediate pressure main stop valve Hough connector.
Background technology
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, it is ensured that the safety of steam turbine.High-pressure main throttle valve and intermediate pressure main stop valve are divided into according to device structure,
High-pressure main throttle valve major control enters the circulation and isolation of high pressure cylinder main steam, and intermediate pressure main stop valve control enters intermediate pressure cylinder reheating and steamed
The circulation and isolation of vapour, function is interdicted with crisis.
When normal inspection is tested, staff scene finds that intermediate pressure main stop valve servomotor connects with valve rod Hough on the right side of unit
Connection device bolt complete rupture (totally 12), Hough device is come off, and intermediate pressure main stop valve is disengaged with servomotor connecting portion, middle pressure master
Porthole is shown in a fully open operation, and spring spool is in free state in fully closed position, servomotor, and now the intermediate pressure main stop valve is in out of control
State, can not close the steam that porthole isolation enters intermediate pressure cylinder, i.e. steam turbine is in great if abnormal tripping operation occurs for unit
In security risk.
Recovery scheme of the prior art has two kinds, and porthole is shown in a fully open operation under vapor action, recovers connection scheme
One：Porthole is closed to fully closed position using bolt top or drawing, porthole is connected with servomotor, spring spool；Scheme two：Use oil
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, using movement test magnetic valve slowly closing porthole until fully closed, then formal bolt restorer operation is installed.
But the equal Shortcomings of above-mentioned two recovery scheme, scheme one because porthole under middle pressure steam effect in upward
Active force, bolt can not overcome steam pressure porthole to be difficult to activity；Scheme two is connected servomotor, bullet temporarily by two kinds
Spring room, porthole are connected as one, and porthole bite is analyzed as oxide skin bite in about 80% open position in closing process,
Repeatedly install to be limited because of bolt after activity and slip, porthole is disengaged to standard-sized sheet again.
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 is oxide skin bite, the more weak reliability of connected mode is extremely low, and is implementing
Middle because that need to be replaced using bolt, security risk is larger in operation, even if porthole stills need to remove interim spiral shell after completely closing
Bolt, recovers the normal connection of porthole so that ensure can be with completely open and close, enforcement difficulty is very big.Therefore, reheat emergency valve valve how is avoided
It is current urgent problem to be solved to occur unexpected fracture with servomotor.
The content of the invention
It is an object of the invention to provide a kind of intermediate pressure main stop valve and the Hough connector of the similar structure high-pressure main throttle valve, lead to
Cross newly-designed two-flap type Hough connector connection and valve rod convex shoulder is coordinated to the intracavitary for being caught in Hough connector top, Hough connection
The bottom of part is connected with newly-designed ring flange, so as to avoid high, reheat emergency valve and servomotor from falling off or occurring
Online processing is not shut down when surprisingly coming off.
To achieve the above object, the invention provides following technical scheme：
The invention provides a kind of high, intermediate pressure main stop valve Hough connector, the Hough connector is split-type Hough
Connector, the inner chamber of the Hough connector includes epicoele and cavity of resorption, and the epicoele and cavity of resorption are that shoulder hole is set, it is described on
Chamber is used for the convex shoulder for embedding valve rod, and the cavity of resorption is used to embed ring flange, and the ring flange is used to fix with the piston rod and connected
Connect.
It is preferred that, the Hough connector includes left valve and right valve, the axis pair of the left valve and right valve along the inner chamber
Claim distribution, the junction of the left valve and right valve is fastened by bolts；
It is preferred that, the epicoele of the inner chamber is the first shoulder hole, and first shoulder hole is included outside the first endoporus and first
Hole, the diameter of first exit orifice is less than the diameter of first endoporus；
It is preferred that, the cavity of resorption of the inner chamber is the second shoulder hole, and second shoulder hole is included in the second exit orifice and second
Hole, the diameter of second exit orifice is less than the diameter of second endoporus；
It is preferred that, second endoporus, the second exit orifice, the first endoporus, the diameter of the first exit orifice are sequentially reduced；
It is preferred that, the ring flange is to be provided with through hole in the middle of boss ring flange, the boss ring flange, the through hole
Diameter is equal with the diameter of first endoporus, and the external diameter of the boss ring flange is equal with the diameter of second endoporus；
It is preferred that, the end face of the boss ring flange is provided with counter sink vertically, and the counter sink is in the boss flange
On the end face of disk circumferentially；
It is preferred that, the counter sink is at least provided with two, and the counter sink is uniformly distributed on the boss ring flange；
It is preferred that, the height of the boss ring flange boss bottom and the deep equality of second endoporus；
It is preferred that, the deep equality of the axial length of the convex shoulder of the valve rod and first endoporus.
The present invention achieves following technique effect in terms of existing technologies：
The Hough stud connector design of the present invention is specifically as follows two-flap type Hough connector, Hough connector into split-type
Two cavitys be set to 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 servomotor and spring spool are subjected to integrally connected, the avris of Hough connector is fastened by bolt, this
Connection is coated and fixed, the firm connection of ring flange and valve rod is ensure that, can avoid by bolt connecting merely in the prior art
The crack conditions of sending and receiving life.
And during interim emergency recovery, it is only necessary to Hough connector is opened into the corresponding accessory of replacing just can be true
The normal operation of equipment is protected, is more facilitated than traditional bolt emergency recovery operation, and stability and security after fixing
It is higher.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
The accompanying drawing needed to use is briefly described, it should be apparent that, drawings in the following description are only some implementations of the present invention
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the connection diagram of the Hough connector of intermediate pressure main stop valve of the embodiment of the present invention；
Fig. 2 is the structural representation 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- Houghs connector, 2- boss ring flange, 3- bolts, 4- convex shoulders, 5- piston rods, 6- counter sinks, on 7-
Chamber, 8- cavity of resorptions.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
It is an object of the invention to provide a kind of high, intermediate pressure main stop valve Hough connector, so as to avoid high, reheat emergency valve valve
Occur surprisingly to come off with servomotor or do not shut down online processing when occurring unexpected come off.
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
Embodiment 1：
As Figure 1-3, structure and work of the present embodiment to a kind of high, intermediate pressure main stop valve Hough connector of the present invention
Principle is described in detail, with the ultra supercritical of 1000MW units, resuperheat, single shaft, the directly steam discharge of four cylinder four, a sky
Exemplified by 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 the top of connector 1, and bottom embeds boss ring flange 2, and the piston rod 5 of boss ring flange 2 and servomotor passes through interior six
Corner bolt is connected, and servomotor is connected with spring spool, and this is the new connected mode 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 so that the energy of Hough connector 1
Enough connect the piston rod 5 of servomotor.
As shown in Fig. 2 the specific structure to Hough connector 1 is introduced, Hough connector 1 connects for split-type Hough
Part 1, Hough connector 1 includes left valve and right valve, the axisymmetrical distribution of left valve and right valve along inner chamber, the connection of left valve and right valve
Place is fastened by bolt 3, and the left valve and right valve structure of Hough connector 1 are identical, utilize the fixation of this split-type
Connection so that the effect of connection is more consolidated, and installation and removal are very convenient, are easy to safeguard.
The inner chamber of Hough connector 1 includes epicoele 7 and cavity of resorption 8, and epicoele 7 and cavity of resorption 8 are that shoulder hole is set, and epicoele 7 is used
In the convex shoulder 4 of embedded valve rod, cavity of resorption 8 is used to embed boss ring flange 2, and boss ring flange 2 is used to be fixedly connected with piston rod 5.
The cavity body structure of specific Hough connector 1 is that the epicoele 7 of inner chamber is the first shoulder hole, and the first shoulder hole includes
First endoporus and the first exit orifice, the diameter of the first exit orifice are less than the diameter of the first endoporus；The cavity of resorption 8 of inner chamber is the second shoulder hole,
Second shoulder hole includes the second exit orifice and the second endoporus, and the diameter of the second exit orifice is less than the diameter of the second endoporus；Above-mentioned shoulder hole
Size be the second endoporus, the second exit orifice, the first endoporus, the diameter of the first exit orifice be sequentially reduced.
The specific ultra supercritical in 1000MW units of design of above-mentioned Hough connector 1, resuperheat, single shaft, four
In the steam discharge of cylinder four, Direct Air-Cooled formula steam turbine, the specific size of Hough connector 1 is：The outside dimension of Hough connector 1 is Φ
The hole of bolt 3 of 313mm, high 139.5mm, left valve and right valve junction is directly Φ 24mm, wherein, the depth of epicoele 7 is 80mm, under
The depth of chamber 8 is 59.5mm, and two shoulder hole sizes of epicoele 7 are the first endoporus Φ 120mm, the first exit orifice Φ 73mm, cavity of resorption 8
Two shoulder hole sizes are the second endoporus Φ 244mm, the second exit orifice Φ 204mm；Wherein second outer hole depth is in 30mm, second
Hole depth is 29.5mm.
The size of epicoele 7 of Harvard connector is the size design according to valve rod convex shoulder 4, and the size of cavity of resorption 8 is in order to embedded
What newly-designed boss ring flange 2 was 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 endoporus, and the external diameter of boss ring flange 2 is straight with the second endoporus
Footpath is equal；The end face of boss ring flange 2 is provided with counter sink 6 vertically, 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, it is ensured that boss method
Blue being stably connected with to piston rod 5 of disk 2.
The present embodiment Hough connector 1 is in the specific connection procedure of intermediate pressure main stop valve：
First, original paper adjust pad is removed, the boss ring flange 2 with boss is processed as (see figure according to design material
3), the top of boss ring flange 2 processing countersunk head, using hexagon socket head cap screw 3 by boss ring flange 2 and servomotor piston rod 5, spring housing
The fastening of cylinder room is connected as a single entity；Hough connector 1 is two-flap type structure, and epicoele 7 and valve rod convex shoulder 4, which coordinate, to be caught in wherein, cavity of resorption 8 with
Boss ring flange 2 coordinates, and is stuck on flange boss, and the boss that 1 liang of valve of Hough connector is welded by both sides is fastened using bolt 3
It is integrated (see Fig. 1).
After servomotor is connected as one with spring spool by new flange, movement test magnetic valve is passed through after opening oil circuit
Servomotor is opened into fully open position, causes personnel's to prevent from occurring in installation process unit tripping oil circuit interruption emergency case
Potential safety hazard, installs additional after temporary cushion block support prevents tip out, the installation of Hough connector 1 from fixing in lower portion thereof and takes out interim pad
Block site clearing, by the movable porthole of movement test magnetic valve, in activity to 80% aperture bite still occurs for porthole, using fast
Bite is gradually eliminated to fully closed, the porthole switch flexibly normal operation of recovery after activity after powered-down magnet valve Fast Activities porthole.
Specific case is applied in the present invention to be set forth the principle and embodiment of the present invention, above example
Illustrate the method and its core concept for being only intended to help to understand the present invention；Simultaneously for those of ordinary skill in the art, according to
According to the thought of the present invention, it will change in specific embodiments and applications.In summary, this specification content
It should not be construed as limiting the invention.
Claims (10)
1. a kind of steam turbine is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the Hough connector is breathed out for split-type
Husband's connector, the inner chamber of the Hough connector includes epicoele and cavity of resorption, and the epicoele and cavity of resorption are that shoulder hole is set, described
Epicoele is used for the convex shoulder for embedding valve rod, and the cavity of resorption is used to embed ring flange, and the ring flange is used to fix with the piston rod
Connection.
2. steam turbine according to claim 1 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the Hough
Connector includes left valve and right valve, and the axisymmetrical of the left valve and right valve along the inner chamber 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, it is characterised in that the inner chamber
Epicoele be the first shoulder hole, first shoulder hole includes the first endoporus and the first exit orifice, and the diameter of first exit orifice is small
In the diameter of first endoporus.
4. steam turbine according to claim 3 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the inner chamber
Cavity of resorption be the second shoulder hole, second shoulder hole includes the second exit orifice and the second endoporus, and the diameter of second exit orifice is small
In the diameter of second endoporus.
5. steam turbine according to claim 4 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that described second
Endoporus, the second exit orifice, the first endoporus, the diameter of the first exit orifice are sequentially reduced.
6. steam turbine according to claim 5 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the flange
Disk is to be provided with through hole in the middle of boss ring flange, the boss ring flange, and the diameter of the through hole is straight with first endoporus
Footpath is equal, and the external diameter of the boss ring flange is equal with the diameter of second endoporus.
7. steam turbine according to claim 6 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the boss
The end face of ring flange is provided with counter sink vertically, the counter sink on the end face of the boss ring flange circumferentially.
8. steam turbine according to claim 7 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the countersunk head
Hole is at least provided with two, and the counter sink is uniformly distributed on the boss ring flange.
9. steam turbine according to claim 8 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the boss
The height of ring flange boss bottom and the deep equality of second endoporus.
10. steam turbine according to claim 9 is high, the Hough connector of intermediate pressure main stop valve, it is characterised in that the valve rod
Convex shoulder axial length and first endoporus 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 true CN106969009A (en) | 2017-07-21 |
| CN106969009B CN106969009B (en) | 2019-09-24 |
Family
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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 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040155216A1 (en) * | 2003-02-07 | 2004-08-12 | Mccarty Michael Wildie | Rod connector assembly |
| 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 |
-
2017
- 2017-05-27 CN CN201710389893.7A patent/CN106969009B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040155216A1 (en) * | 2003-02-07 | 2004-08-12 | Mccarty Michael Wildie | Rod connector assembly |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN106969009B (en) | 2019-09-24 |
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