CN206175069U - Exhaust and brake butterfly valve - Google Patents
Exhaust and brake butterfly valve Download PDFInfo
- Publication number
- CN206175069U CN206175069U CN201621155217.0U CN201621155217U CN206175069U CN 206175069 U CN206175069 U CN 206175069U CN 201621155217 U CN201621155217 U CN 201621155217U CN 206175069 U CN206175069 U CN 206175069U
- Authority
- CN
- China
- Prior art keywords
- valve
- butterfly valve
- valve block
- temperature
- value
- 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.)
- Expired - Fee Related
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D9/00—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits
- F02D9/04—Controlling engines by throttling air or fuel-and-air induction conduits or exhaust conduits concerning exhaust conduits
- F02D9/06—Exhaust brakes
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The utility model provides an exhaust and brake butterfly valve, this butterfly valve of include the valve body with install the valve block at the valve body hole, the valve block is connected on valve block shaft, the hole is a not constant diameter hole, keeps away from valve block shaft's central line more, the diameter of hole is big more. This braking butterfly valve has changed the shape of valve block hole among the prior art, changes into the dolioform hole in reverse side that adaptable valve block expansion deformation needs and reduce valve block jamming risk with cylindricality hole among the prior art, the on -line monitoring of clearance adjustment system to adopt pneumatic mode automated control, avoided the valve block that the spring led to the fact among the prior art drunkenness, wearing and tearing and obscission from top to bottom, have and adjust advantage stable, sensitive and degree of accuracy height.
Description
Technical field
The utility model is related to engine exhaust and brake technical field, more particularly, to a kind of exhaust brake butterfly valve.
Background technology
EVA exhaust brake butterfly valves are a kind of mechanical complemental brake systems, and the device is widely used in large-sized diesel car
On, it reaches the purpose of braking car body using the engine rotation resistance for inversely driving engine and producing from transmission direction of principal axis.
When engine is working properly, the air pressure in instroke is almost equal with atmospheric pressure, and any pressure is not received on the piston of cylinder
Power, but if having installed exhaust braking in gas extraction system, the air in blast pipe will be compressed, and top land is subject to
The pressure effect of compressed air, organizes the operating of engine and produces braking action, so as to reach the purpose of regulation speed.
For butterfly valve of the prior art, find there is following defect in use：1）Valve block and valve body inner bore gap compared with
Little, in hot environment, valve block is produced after thermal expansion effects, and valve block is contacted with valve body inner bore, and valve block transhipment will be made to produce clamping stagnation, and
The suitable gap width for being suitable to be used under working condition is obtained, by lot of experiments and acquisition need to be calculated, labor intensive is timely
Between, high cost；2）Bushing that gap between the valve block and valve body of butterfly valve is supported by high-abrasive material and axle sleeve ensureing, wear-resisting material
Material high cost, Technology for Heating Processing is complicated, and the abrasion using bottom bracket axle is still unavoidable from；3）The performance of shock-absorbing spring and life-span
The service life of butterfly valve is directly determined, under vibration environment, the possible play up and down of valve block causes the abrasion of part and takes off
Fall；4）There is clamping stagnation in the rotation once the valve block when lorry brake is braked, then cause to hinder directly to skidding process, especially
It is that in high temperature environments, the probability that valve block clamping stagnation is produced is big；5）Human pilot is difficult to timely to the gap between valve block and valve body
Maintenance and adjustment.
The content of the invention
The purpose of this utility model is to overcome shortcoming present in prior art, there is provided a kind of exhaust brake butterfly valve, should
Butterfly valve changes first the shape of valve block endoporus, to adapt to the needs of high temperature lower disc thermal expansion, reduces the probability of valve block clamping stagnation,
A kind of butterfly valve clearance adjustment system is additionally provided, to manually adjust valve body with side clearance on valve block endoporus, the technical side of employing
Case is：A kind of exhaust brake butterfly valve, the butterfly valve includes valve body and the valve block installed in the valve body inner bore, and the valve block is connected to
On valve shaft, it is characterised in that：The endoporus is not isometrical endoporus, described interior further away from the center line of the valve shaft
The diameter in hole is bigger.
Technical characteristic of the present utility model also has：The endoporus cross-section curve is smooth curve.
Technical characteristic of the present utility model also has：The endoporus cross-section curve is with the centre of gyration line of the valve shaft
Centered on point, to the smooth curve of both sides gradually abduction.
Technical characteristic of the present utility model also has：The braking butterfly valve is additionally provided with clearance adjustment system, the gap adjustment
System includes：Temperature sensing component and air inlet chilldown system, determine whether to open according to the measured value of the temperature sensing component
Air inlet chilldown system, the air inlet chilldown system is fed gas in the exhaust passage of the braking butterfly valve；Spacing sensing element
And gap adjusting mechanism, the spacing sensing element can detect the gap between the valve block and the endoporus, and by the gap
Detected value is delivered to automobile central control system, and the automobile central control system is compared the gap detection value with setting value, when
Less than during setting, the central control system issues action signal, the gap adjusting mechanism action, until the inspection to the detected value
Measured value is not less than the setting value, the gap adjusting mechanism stopping action.
Technical characteristic of the present utility model also has：The gap adjusting mechanism also includes air pump and pressure gauge, between described
When gap detected value is less than setting value, the automobile central control system sends action command, and the air pump gives the gap adjusting mechanism
Inflation, until the gap detection value is not less than the setting value.
Technical characteristic of the present utility model also has：The temperature sensing component includes temperature sensor A, the TEMP
Device A is used to detect exhaust gas temperature and the temperature value is delivered to into the automobile central control system, to decide whether to open air inlet
Chilldown system.
Technical characteristic of the present utility model also has：The temperature sensing component also includes temperature sensor B, and the temperature is passed
Sensor B is used for detection and opens the temperature after the air inlet chilldown system, and the temperature value is delivered to into the automobile middle control system
System, so that the automobile central control system adjusts the power of the air inlet chilldown system according to the temperature that sensor B is detected.
The beneficial effects of the utility model are：This braking butterfly valve changes the shape of prior art middle valve plate endoporus, will
In prior art bore change into be suitable for valve block dilatancy need and reduce valve block clamping stagnation risk it is anti-dolioform in
Hole；Clearance adjustment system is monitored on-line, and using pneumatic mode Automated condtrol, it is to avoid the valve that spring is caused in prior art
The upper and lower play of piece, abrasion and obscission, with stable, sensitive and degree of accuracy height the advantage of regulation.
Description of the drawings
Accompanying drawing 1 is the utility model structural representation, and accompanying drawing 2 is partial enlarged drawing at I in accompanying drawing 1, in accompanying drawing 2：1 is valve
Piece, 2 is valve shaft, and 3 is valve body, and 4 is elastic cylindrical pin, and 5 is sealing ring, and 6 is guidance tape, and 7 is stop collar I, and 8 is dust cover, 9
It is spring, 10 is pressure gauge, and 11 is inlet suction port, and 12 is air inlet pipe, and 13 is stop collar II, and 14 is sensor.Accompanying drawing 3 is valve body
Inner hole structure schematic diagram, accompanying drawing 4 is clearance adjustment system schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawings, specific embodiment of the present utility model is illustrated.The utility model discloses a kind of
Exhaust brake butterfly valve, is shown in accompanying drawing 1 and accompanying drawing 2, and the butterfly valve includes valve body 3 and the valve block 1 installed in valve body inner bore, and valve block 1 connects
On valve shaft 2, and rotate with valve shaft 2.Under to prevent hot environment, valve block thermal expansion causes to rotate clamping stagnation, by valve body
Hole is designed as not isometrical endoporus, and further away from the center line of valve shaft 2, the diameter of endoporus is bigger, after valve block 1 expands, valve
Move outside contact point between piece 1 and valve interior wall, the opening and closing of valve block 1 is closed angle and reduced, to reduce clamping stagnation risk.
In order to valve block 1 rotate it is smooth, the cross-section curve of the endoporus of valve block 1 is smooth curve, and endoporus cross-section curve
Be centered on the centre of gyration line of valve shaft 2 point, to the smooth curve of both sides gradually abduction.
Braking butterfly valve is additionally provided with clearance adjustment system, and clearance adjustment system includes：Temperature sensing component and air inlet precooling system
System, determines whether to open air inlet chilldown system according to the measured value of temperature sensing component, and air inlet chilldown system feeds gas into system
In the exhaust passage of dynamic butterfly valve；Spacing sensing element and gap adjusting mechanism, the detectable valve block of spacing sensing element and endoporus it
Between gap, and the gap detection value is delivered to into automobile central control system, automobile central control system is by gap detection value and setting value
It is compared, when detected value is less than setting, central control system issues action signal, gap adjusting mechanism action, until detected value
Not less than setting value, gap adjusting mechanism stopping action.
The spacing sensing element at this place can be pressure sensor or range sensor.
Gap adjusting mechanism also includes air pump and pressure gauge, when gap detection value is less than setting value, automobile central control system
Action command is sent, air pump is inflated to gap adjusting mechanism, until gap detection value is not less than setting value.
Temperature sensing component includes that temperature sensor A, temperature sensor A are used to detect exhaust gas temperature in the present embodiment
And the temperature value is delivered to into automobile central control system, to decide whether to open air inlet chilldown system.Temperature sensing component also includes
Temperature sensor B, temperature sensor B are used for detection and open the temperature after air inlet chilldown system, and the temperature value is delivered to into vapour
Car central control system, so that automobile central control system adjusts the power of air inlet chilldown system according to the temperature that sensor B is detected.
Certainly, described above is not limitation of the utility model, and the utility model is also not limited to the example above, this skill
Change, remodeling, addition or replacement that the those of ordinary skill in art field is made in essential scope of the present utility model, also belong to
In protection domain of the present utility model.
Claims (7)
1. a kind of exhaust brake butterfly valve, the butterfly valve includes valve body and the valve block installed in the valve body inner bore, the valve block connection
On valve shaft, it is characterised in that：The endoporus is not isometrical endoporus, described further away from the center line of the valve shaft
The diameter of endoporus is bigger.
2. according to the braking butterfly valve described in claim 1, it is characterised in that：The endoporus cross-section curve is smooth curve.
3. according to the braking butterfly valve described in claim 2, it is characterised in that：The endoporus cross-section curve is with the valve shaft
Centre of gyration line centered on point, to the smooth curve of both sides gradually abduction.
4. according to the braking butterfly valve described in claim 1, it is characterised in that：The braking butterfly valve is additionally provided with clearance adjustment system,
The clearance adjustment system includes：Temperature sensing component and air inlet chilldown system, according to the measured value of the temperature sensing component
Determine whether to open air inlet chilldown system, the air inlet chilldown system is fed gas in the exhaust passage of the braking butterfly valve；
Spacing sensing element and gap adjusting mechanism, between the spacing sensing element can detect between the valve block and the endoporus
Gap, and the gap detection value is delivered to into automobile central control system, the automobile central control system is by the gap detection value and sets
Value is compared, and when the detected value is less than setting, the central control system issues action signal, and the gap adjusting mechanism is moved
Make, until the detected value is not less than the setting value, the gap adjusting mechanism stopping action.
5. according to the braking butterfly valve described in claim 4, it is characterised in that：The gap adjusting mechanism also includes air pump and pressure
Table, when the gap detection value is less than setting value, the automobile central control system sends action command, and the air pump is between described
Gap governor motion is inflated, until the gap detection value is not less than the setting value.
6. according to the braking butterfly valve described in claim 5, it is characterised in that：The temperature sensing component includes temperature sensor A,
The temperature sensor A is used to detect exhaust gas temperature and the temperature value is delivered to into the automobile central control system, to determine
Whether air inlet chilldown system is opened.
7. according to the braking butterfly valve described in claim 6, it is characterised in that：The temperature sensing component also includes temperature sensor
B, the temperature sensor B are used for detection and open the temperature after the air inlet chilldown system, and the temperature value are delivered to described
Automobile central control system, so that the automobile central control system adjusts the air inlet chilldown system according to the temperature that sensor B is detected
Power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621155217.0U CN206175069U (en) | 2016-10-31 | 2016-10-31 | Exhaust and brake butterfly valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621155217.0U CN206175069U (en) | 2016-10-31 | 2016-10-31 | Exhaust and brake butterfly valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206175069U true CN206175069U (en) | 2017-05-17 |
Family
ID=58679425
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621155217.0U Expired - Fee Related CN206175069U (en) | 2016-10-31 | 2016-10-31 | Exhaust and brake butterfly valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206175069U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3080426A1 (en) * | 2018-04-24 | 2019-10-25 | Faurecia Systemes D'echappement | ASSEMBLING A VALVE FOR AN EXHAUST LINE AND CORRESPONDING VALVE |
-
2016
- 2016-10-31 CN CN201621155217.0U patent/CN206175069U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3080426A1 (en) * | 2018-04-24 | 2019-10-25 | Faurecia Systemes D'echappement | ASSEMBLING A VALVE FOR AN EXHAUST LINE AND CORRESPONDING VALVE |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206175069U (en) | Exhaust and brake butterfly valve | |
| CN103950434B (en) | A kind of supporting leg, which contacts to earth, supports decision maker and method | |
| CN104648051A (en) | Tire, tire pressure regulating system and control method for tire pressure regulating system | |
| CN217930752U (en) | Oil tank deflection testing arrangement | |
| JP6194359B2 (en) | Liquid level detector | |
| US5564895A (en) | Active automatic clamping control | |
| CN207529917U (en) | A kind of wafer clamping device | |
| CN106824493B (en) | Calcium carbonate grinding machine follows bad wind adjusting method | |
| CN110848447A (en) | Pneumatic type active explosion-proof gate valve and explosion-proof method | |
| CN204094644U (en) | Water cutting head compartment visits high device automatically | |
| US20040007215A1 (en) | Control of fuel vapor processing device | |
| CN206429746U (en) | Gas transmission station Self operated Regulator | |
| CN104316271A (en) | Air tightness testing tool for valve bodies of unthreaded hole connector types | |
| CN201818816U (en) | Pendulous ceramic gate valve | |
| CN108518256A (en) | A kind of valve mechanism and engine for monitoring valve clearance on-line | |
| CN201152809Y (en) | Bursting pressure test system of cylinder valve bursting disc | |
| CN101362423A (en) | Inflated and deflated apparatus for rotary tyre and control system thereof | |
| CN204142443U (en) | A kind of air tightness test frock for unthreaded hole interface shape valve body | |
| CN203902173U (en) | Automatic explosion-proof device of automobile tire | |
| CN211117935U (en) | TRT hydraulic bypass valve double-valve-position detection system | |
| US3512497A (en) | Leakage indicating device for air braking systems | |
| CN105464721A (en) | Rotating speed control device for turbine | |
| CN207029156U (en) | A kind of system for detecting air line of locomotive frozen state | |
| CN200968903Y (en) | Apparatus for real-time detecting compressed-air consumption of train | |
| CN206344800U (en) | Automatically controlled hand brake valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170517 Termination date: 20211031 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |