CN109404062A - Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box - Google Patents
Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box Download PDFInfo
- Publication number
- CN109404062A CN109404062A CN201811499228.4A CN201811499228A CN109404062A CN 109404062 A CN109404062 A CN 109404062A CN 201811499228 A CN201811499228 A CN 201811499228A CN 109404062 A CN109404062 A CN 109404062A
- Authority
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- China
- Prior art keywords
- cam
- power generation
- steam turbine
- thermal power
- turbine valve
- 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.)
- Pending
Links
- 238000010248 power generation Methods 0.000 title claims abstract description 28
- 238000009413 insulation Methods 0.000 claims description 3
- 229920000728 polyester Polymers 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 7
- 230000007812 deficiency Effects 0.000 abstract description 3
- 208000018672 Dilatation Diseases 0.000 abstract 2
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000006508 Nelumbo nucifera Nutrition 0.000 description 1
- 240000002853 Nelumbo nucifera Species 0.000 description 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000004069 differentiation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000009711 regulatory function Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/10—Final actuators
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01D—NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES
- F01D17/00—Regulating or controlling by varying flow
- F01D17/20—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted
- F01D17/22—Devices dealing with sensing elements or final actuators or transmitting means between them, e.g. power-assisted the operation or power assistance being predominantly non-mechanical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
The invention discloses a kind of thermal power generation steam turbine valve cam main axis of dilatations, including axis body, tip face is slided there are two symmetrical on the axis body, is set with opening housing on the sliding tip face, it is put on outside the opening and is set with cam one, two opening housings are connected by bolt one.The invention has the characteristics that completing more output function with less component, whole lightweight, it reduces costs, promote cost performance, the setting of cam any angular position can be achieved, not by structure etc. point limitation, evade the deficiency of fan-shaped lever body, cancel fan-shaped lever body, reduce rotary inertia, shaft type expansion connecting sleeve is expanded using self-centering, when bearing load, by itself and cam, the combination pressure of main axis of dilatation and the frictional force generated together transmit torque, the combined load of axial force or both, accuracy of alignment is high, positioned at arbitrary angles, installation, adjustment, convenient disassembly, intensity is high, stable connection is reliable.
Description
Technical field
The present invention relates to thermal power generation steam turbine valve cam main axis of dilatation and cam switch boxes.
Background technique
What country's thermal power generation Steam Turbine valve opening and closing control switch box was all made of at present is the derivative production of foreign technology
Product --- poke-rod type switch enclosure, expensive, delivery cycle is long and easily breaks down.
Used thermal power generation poke-rod type switch enclosure is as shown in Figure 1, 2, and have the following problems: 1, structure is complicated, and adjustment becomes
Amount is more, and accumulated error is big, and adjustment difficulty is big, increases maintenance work amoun and difficulty, brings to unit safety stable operation greatly hidden
Suffer from；2, the mounting and adjusting hole being arranged on poke-rod type switch enclosure rocker arm is excessive, can not accurately determine adjustment hole site, cause often to send out
Phenomena such as raw poke-rod type switch enclosure outside connecting rod fracture, bending, 3, poke-rod type switch enclosure kinematic pair it is more, increase fit clearance,
After adjustment, by opening, stopping several times, frequent occurrence in switch enclosure driving lever and travel switch contact can not normal contact phenomena so that
Valve position signal can not be exported normally；4, poke-rod type switch enclosure can not carry out valve wide open location status down stroke when factory assembles
The accurate installation of switch, therefore valve is frequently present of driving lever and travel switch mistake in switch enclosure when standard-sized sheet is debugged for the first time at the scene
The phenomenon that contacting and damaging travel switch；5, poke-rod type switch enclosure rotary part is the sector structure of single-point support, and center of gravity does not exist
In rotary shaft, rotary inertia is very big, enormous impact is generated to poke-rod type switch enclosure outside connecting rod when valve quick closing valve, when toggle on connecting rod
There is slight bite in bearing or the processing of connecting rod escape is too deep, more exacerbates the bending and fracture probability of connecting rod；6, poke-rod type
Switch enclosure rocker arm shaft axle sleeve is independent support, and the secondary stress of friction is very big when rocker arm shaft quickly slides relatively in axle sleeve.
Summary of the invention
Problem that the purpose of the present invention is to overcome the above shortcomings provides a kind of thermal power generation steam turbine valve and is expanded with cam
Axis and cam switch box.
Present invention technical solution used for the above purpose is: thermal power generation steam turbine valve is expanded with cam
Axis, including axis body are set with opening housing, institute on the sliding tip face there are two symmetrical sliding tip face on the axis body
It states outer put on of opening and is set with cam one, two opening housings are connected by bolt one.
The axis body, which is located between two opening housings, is further sleeved at least one cam two, and the cam two and opening are outer
Set is connected by bolt two.
The axis body, which is located between two opening housings, is further sleeved with positioning sleeve, leads between the positioning sleeve and opening housing
Cross the connection of bolt two.
Thermal power generation steam turbine valve cam switch box, including it is mounted on the intracorporal travel switch of box, connecting terminal
Row, it further includes bevel gear shafting and the thermal power generation steam turbine valve that the travel switch is connected to connecting terminal block
With cam main axis of dilatation, the cam on axis body is correspondingly arranged with travel switch, and cam and travel switch trigger travel switch when contacting,
The bevel gear shafting includes intermeshing master bevel gear and secondary bevel gear, and the pair bevel gear is mounted on axis body, described
Master bevel gear is mounted on master bevel gear axis, and the master bevel gear axis is connect with rocker arm.
Instruction disk is installed on the master bevel gear axis.
Thermal insulation board is installed between the travel switch and box body.
The box body corresponds to thermal power generation steam turbine valve with offering form at cam main axis of dilatation and travel switch, institute
It states and polyester transparent plate is installed on form.
Rocker arm rotation angle display is provided at the rocker arm.
The invention has the characteristics that completing more output function with less component, whole lightweight is reduced into
This, promotes cost performance, it can be achieved that cam any angular position is set, not by structure etc. point limitation, evade fan-shaped lever body it
Deficiency, cancels fan-shaped lever body, reduces rotary inertia, expands shaft type expansion connecting sleeve using self-centering, when receiving load
When, by it with cam, the compound load of the combination pressure of main axis of dilatation and the frictional force transmitting torque generated together, axial force or both
Lotus, accuracy of alignment is high, positioned at arbitrary angles, installation, adjustment, convenient disassembly, and intensity is high, and stable connection is reliable.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes a part of the invention, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.
Fig. 1 is the structural schematic diagram of existing poke-rod type switch enclosure.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the main view of thermal power generation steam turbine valve cam main axis of dilatation of the invention.
Fig. 4 is the side view of Fig. 3.
Fig. 5 is the seperated view of Fig. 3.
Fig. 6 is the main view of thermal power generation steam turbine valve cam switch box of the invention.
Fig. 7 is the top view of Fig. 6.
Fig. 8 is the side view of Fig. 7.
Fig. 9 is the structural schematic diagram of bevel gear shafting of the invention.
Wherein: 1, box body 11, form 2, travel switch 3, connecting terminal block 4, thermal power generation steam turbine valve
With cam main axis of dilatation 41, axis body 42, sliding tip face 43, opening housing 44, cam 1, bolt 1, convex
Take turns 2 47, bolt 2 48, positioning sleeve 5, bevel gear shafting 51, master bevel gear 52, secondary bevel gear 53, main chute tooth
Wheel shaft 54, rocker arm 61, rocker arm rotation angle display 7, pull rod 8, driving lever 9, slide bar 10, connects instruction disk 6
Bar.
Specific embodiment
If used some vocabulary in the specification and claims to censure specific components, those skilled in the art are answered
It is understood that hardware manufacturer may call the same component with different nouns, this specification and claims are not with name
The difference of title is such as being led to as the mode for distinguishing component, but with the difference of component functionally as the criterion of differentiation
The "comprising" of piece specification and claim mentioned in is an open language, therefore should be construed to " include but do not limit
In ", " substantially " refers within the acceptable error range, those skilled in the art can within a certain error range solve described in
Technical problem basically reaches the technical effect, and specification subsequent descriptions are to implement better embodiment of the invention, so described
Description is the range being not intended to limit the invention for the purpose of illustrating rule of the invention, protection scope of the present invention
As defined by the appended claims.
Below in conjunction with attached drawing, invention is further described in detail, but not as a limitation of the invention.
As in Figure 3-5, the present invention is a kind of thermal power generation steam turbine valve cam main axis of dilatation 4, including axis body 41, institute
It states there are two symmetrical sliding tip face 42 on axis body 41, the sliding tip face 42 becomes larger from 41 end of axis body to mid diameter
Inclined-plane is set with opening housing 43 on the sliding tip face 42, is set with cam 1 on the opening housing 43, and two
The opening housing 43 is connected by bolt 1, and bolt 1 specifies hexagon socket head cap screw using overall length, is drawn when by high-intensitive
When power is acted on bolt 1, opening housing 43 is deformed, i.e., between opening 43 inner ring of housing and axis body 41, opening housing 43
Powerful fastening, tension force are generated between outer ring and cam 1, thus realize cam and axis body 41 without key connection, two
The control to two travel switches 2 can be realized in two cams 1 on opening housing 43, when there is multiple travel switches 2,
The cam 2 46 of corresponding number can be set between two opening housings 43 in the axis body 41, cam 2 46 is directly set with
In the plane of axis body 41, whole cams 2 46 and two opening housings 43 are then connected as one by bolt 2 47
Body is influenced by 2 size of limit switch, the case where cam 1 are used only or when increasing cam 2 46, two opening housings
Gap presence is had between 43, gap is filled up by the positioning sleeve 48 being sleeved on axis body 41, the positioning sleeve 48
It is connected as one between opening housing 43, cam 2 46 by bolt 2 47.
As Figure 6-9, thermal power generation steam turbine valve cam switch box of the invention, including it is mounted on box body 1
Interior travel switch 2, connecting terminal block 3, the travel switch 2 are connected to connecting terminal block 3, the travel switch 2 and box body 1
Between thermal insulation board is installed, improve the heat resistance of travel switch 2, hinder heat transfer, further include angular wheel shaft in the box body 1
It is 5 and the thermal power generation steam turbine valve cam main axis of dilatation 4, (cam 1 is convex for the cam on the axis body 41
It takes turns 1 46) to be correspondingly arranged with travel switch 2 with cam 2, cam and travel switch 2 trigger travel switch, the box when contacting
Form 11, the form 11 are offered at the corresponding thermal power generation steam turbine valve cam main axis of dilatation 4 of body 1 and travel switch 2
On polyester transparent plate is installed, convenient for observing 1 inner case of box body, the bevel gear shafting 5 include it is intermeshing
Master bevel gear 51 and secondary bevel gear 52, the pair bevel gear 52 are mounted on axis body 41, and the master bevel gear 51 is mounted on main chute
On gear shaft 53, the master bevel gear axis 53 is connect with rocker arm 6, and instruction disk 54 is equipped on the master bevel gear axis 53, can be more
The operating status of intuitive display switch box is provided with rocker arm rotation angle display 61 at the rocker arm 6, can intuitively show and shake
Arm 6 rotates angle.
Working principle: it is not more than rocker arm 6 (along 53 axis rotation of master bevel gear axis when steam turbine valve pull rod 7 acts
90 degree), master bevel gear axis 53 drives master bevel gear 51 to rotate, and master bevel gear 51 drives secondary bevel gear 52 i.e. axis body 41 to rotate, axis
The angular turn that 41 overhead cam of body is accordingly set therewith, cam make corresponding travel switch 2 complete to open, be closed and move therewith
Make, exports electric signal.
Executing agency's transform linear motion is the rotary motion of cam main axis of dilatation by the present invention, will be multiple in poke-rod type switch enclosure
The structures such as miscellaneous fan plate, driving lever 8, adjustment bolt, slide bar 9 are changed to cam-type structure, and the structural adjustment is convenient, convenient, work
It is safe and stable, reliable, it runs smoothly, zero-speed reversion is not required to due to gap is big, inertia impact is big without gap is added up after adjustment
It often readjusts, according to 7 pivot angle of valve rotational angle and pull rod, determines 7 length of pull rod, that is, can determine on cam switch box
6 position of mounting hole of rocker arm, mounting hole have uniqueness, and in-site installation, debugging are simple, convenient, expand shaft type cam structure, can be with
360 degree rotation, the adjustment positioning of cam any angle, the scene that efficiently solves adjusts improper and leads to poke-rod type switch enclosure occur
Driving lever 8 is crossed with travel switch 2 contacts damage travel switch phenomenon, and cam switch box product manufacturing precision is high, compact-sized, peace
Securely, inertia is small for dress, and movement is steady, and gap is small, the cable lock that can be added thermovent in box body 1 and cable multiposition is facilitated to install
Head opening, cam switch box expand the regulatory function of axle construction etc. by cam, easily realize travel switch 2 in any valve position
Switch and closure, current poke-rod type switch enclosure can only realize the unlatching of dead-centre position two, closure, empty to adapt to in-site installation
Between require, the installation site and angle of the needs of rocker arm 6 are realized by bevel gear shafting 5 and cam main axis of dilatation, and by poke-rod type
Some support of switch enclosure input shaft is changed to the two o'clock support at cam switch box input shaft both ends, and rotary inertia is small, impact
It is small, increase one degree of freedom, i.e. increase bevel gear shafting 5, cam switch box is the enclosed construction with transparent window, to row
Cheng Kaiguan 2 and connecting terminal etc. play good protecting effect, meet the protection level requirements and exquisite appearance of related unit.
The present invention realizes and completes more output function with less component, and whole lightweight is reduced costs, mentioned
Cost performance is risen, four circuit stroke (limit) switch of sealing top ball plunger heat resistant type can be used in travel switch 2, and temperature tolerance is reachable
+ 100 degree realize multiplied signal output, simplify structure, reduce cost, it can be achieved that the setting of cam any angular position, is not tied
Structure etc. point limitation, evades the deficiency of fan-shaped lever body, cancels fan-shaped lever body, rotary inertia is reduced, using self-centering
Expand shaft type expansion connecting sleeve, when bearing load, by it with cam, the combination pressure of main axis of dilatation and the frictional force generated together
The combined load of torque, axial force or both is transmitted, accuracy of alignment is high, positioned at arbitrary angles, installation, adjustment, convenient disassembly, by force
Degree is high, and stable connection is reliable.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art within the technical scope of the present disclosure, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (8)
1. thermal power generation steam turbine valve cam main axis of dilatation, it is characterised in that: including axis body, there are two symmetrical on the axis body
Sliding tip face, opening housing is set on the sliding tip face, is put on outside the opening and is set with cam one, two institutes
Opening housing is stated to connect by bolt one.
2. thermal power generation steam turbine valve cam main axis of dilatation as described in claim 1, it is characterised in that: the axis body is located at
At least one cam two is further sleeved between two opening housings, the cam two is connect with opening housing by bolt two.
3. thermal power generation steam turbine valve cam main axis of dilatation as claimed in claim 1 or 2, it is characterised in that: the axis body
It is further sleeved with positioning sleeve between two opening housings, is connected between the positioning sleeve and opening housing by bolt two.
4. thermal power generation steam turbine valve cam switch box, including it is mounted on the intracorporal travel switch of box, connecting terminal block,
The travel switch is connected to connecting terminal block, it is characterised in that: further includes any one of bevel gear shafting and claim 1-3
Described in thermal power generation steam turbine valve cam main axis of dilatation, the cam on axis body is correspondingly arranged with travel switch, cam with
Travel switch triggers travel switch when contacting, the bevel gear shafting includes intermeshing master bevel gear and secondary bevel gear, institute
It states secondary bevel gear to be mounted on axis body, the master bevel gear is mounted on master bevel gear axis, and the master bevel gear axis and rocker arm connect
It connects.
5. thermal power generation steam turbine valve cam switch box as claimed in claim 4, it is characterised in that: the main chute tooth
Instruction disk is installed on wheel shaft.
6. thermal power generation steam turbine valve cam switch box as claimed in claim 4, it is characterised in that: the stroke is opened
It closes and thermal insulation board is installed between box body.
7. thermal power generation steam turbine valve cam switch box as claimed in claim 4, it is characterised in that: the box body pair
It answers thermal power generation steam turbine valve with form is offered at cam main axis of dilatation and travel switch, polyester is installed on the form
Transparent panel.
8. thermal power generation steam turbine valve cam switch box as claimed in claim 4, it is characterised in that: at the rocker arm
It is provided with rocker arm rotation angle display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811499228.4A CN109404062A (en) | 2018-12-08 | 2018-12-08 | Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811499228.4A CN109404062A (en) | 2018-12-08 | 2018-12-08 | Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109404062A true CN109404062A (en) | 2019-03-01 |
Family
ID=65457849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811499228.4A Pending CN109404062A (en) | 2018-12-08 | 2018-12-08 | Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404062A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110287598A (en) * | 2019-06-26 | 2019-09-27 | 太原科技大学 | A kind of design method of expansion coupling sleeve bearing capacity |
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|---|---|---|---|---|
| CN2561752Y (en) * | 2002-07-12 | 2003-07-23 | 安维凯 | Expended spindle |
| CN201901747U (en) * | 2010-10-15 | 2011-07-20 | 诸暨鑫犇机械有限公司 | Eccentric wheel device for jacquard head |
| CN103521798A (en) * | 2013-11-04 | 2014-01-22 | 无锡市聚英机械制造有限公司 | Expansion type adjustable core rod |
| CN104835663A (en) * | 2015-06-05 | 2015-08-12 | 哈尔滨汽轮机厂有限责任公司自动控制工程分公司 | Steam turbine switch box |
| CN204983929U (en) * | 2015-07-09 | 2016-01-20 | 江苏虹宇太阳能工业有限公司 | Intelligence door of intelligence door transmission system and built -in this system |
| CN206484370U (en) * | 2017-01-12 | 2017-09-12 | 江阴市万仞机械有限公司 | Main axis of dilatation |
| CN206708181U (en) * | 2017-05-03 | 2017-12-05 | 周洁 | A kind of magnetic expansion axle |
| CN209212315U (en) * | 2018-12-08 | 2019-08-06 | 庞厚星 | Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box |
-
2018
- 2018-12-08 CN CN201811499228.4A patent/CN109404062A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2561752Y (en) * | 2002-07-12 | 2003-07-23 | 安维凯 | Expended spindle |
| CN201901747U (en) * | 2010-10-15 | 2011-07-20 | 诸暨鑫犇机械有限公司 | Eccentric wheel device for jacquard head |
| CN103521798A (en) * | 2013-11-04 | 2014-01-22 | 无锡市聚英机械制造有限公司 | Expansion type adjustable core rod |
| CN104835663A (en) * | 2015-06-05 | 2015-08-12 | 哈尔滨汽轮机厂有限责任公司自动控制工程分公司 | Steam turbine switch box |
| CN204983929U (en) * | 2015-07-09 | 2016-01-20 | 江苏虹宇太阳能工业有限公司 | Intelligence door of intelligence door transmission system and built -in this system |
| CN206484370U (en) * | 2017-01-12 | 2017-09-12 | 江阴市万仞机械有限公司 | Main axis of dilatation |
| CN206708181U (en) * | 2017-05-03 | 2017-12-05 | 周洁 | A kind of magnetic expansion axle |
| CN209212315U (en) * | 2018-12-08 | 2019-08-06 | 庞厚星 | Thermal power generation steam turbine valve cam main axis of dilatation and cam switch box |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110287598A (en) * | 2019-06-26 | 2019-09-27 | 太原科技大学 | A kind of design method of expansion coupling sleeve bearing capacity |
| CN110287598B (en) * | 2019-06-26 | 2022-07-05 | 太原科技大学 | Design method for bearing capacity of expansion coupling sleeve |
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