CN205841931U - A kind of dual hold down gag of cylindrical liquid cylinder pressure - Google Patents
A kind of dual hold down gag of cylindrical liquid cylinder pressure Download PDFInfo
- Publication number
- CN205841931U CN205841931U CN201620693628.9U CN201620693628U CN205841931U CN 205841931 U CN205841931 U CN 205841931U CN 201620693628 U CN201620693628 U CN 201620693628U CN 205841931 U CN205841931 U CN 205841931U
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- cylinder
- valve
- main shaft
- pressure
- hydraulic
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Abstract
The utility model discloses a kind of dual hold down gag of cylindrical liquid cylinder pressure, including air cylinder device and two ingredients of hydraulic cylinder device, on air cylinder device, wherein it is provided with cylinder main shaft, hydraulic cylinder device uses cylinder system structure, cylinder system is provided with hydraulic jack main shaft, at work, cylinder main shaft, hydraulic jack main shaft is connected with the valve rod of valve respectively, cylinder main shaft, hydraulic jack main shaft can provide a descending or up effect for valve, this utility model one dual hold down gag of cylindrical liquid cylinder pressure, valve seal is simple, avoid revealing, disclosure satisfy that the safe operation requirement of high pressure turbine by valve and low pressure bypass valve arrangement, ensure that the safety of large-scale thermal power machine group.
Description
Technical field
This utility model relates to boiler valve field, particularly relates to by a kind of Boiler High Pressure bypass valve and boiler low pressure
The hold down gag of road valve.
Background technology
In field, thermal power plant, power plant equipment mainly includes that steam boiler, steam turbine, the big power of electromotor three set
Standby, in boiler power generation process, first boiler heat-energy is converted into the mechanical energy promoting steam turbine generator to rotate, then electromotor depends on
Being converted to electric energy by mechanical energy, the effect of boiler is to produce steam, and steam boiler is also referred to as steam generator.
Wherein, the path of steam boiler mainly includes steam main road and steam by-pass, and bypath system includes: first bypass and
Second two ingredients of bypass, wherein the first bypass bypasses for main steam, and first bypass one end is connected as steam turbine high-pressure cylinder,
The other end is connected as reheater, its objective is that main steam, after ignition of the boiler, before steam turbine red switch, is caused steam turbine by steam turbine
After high pressure cylinder, namely cause reheaing steam pipe, make reheating vapour have steam to pass through, it is to avoid to burn out.
Second bypass one end is connected to turbine low pressure cylinder, and the other end is connected as vapour condenser, and sets in the second bypass
Having put hydrophobic valve, hydrophobic valve is connected to trench door by pipeline.
All being provided with valve system in bypass, valve is important connection workpiece, reduces pressure in valve guarantee work,
Or close pipe path function, play isolation No leakage.High-pressure power plant bypass valve and the work of power plant's low pressure bypass valve arrangement
Environment, at cold conditions, gaseous state, under hot mal-condition such as grade, is easily damaged, and the quality of valve directly influences the safety of unit, and
Existing valve closing bothers, and sealing surface is the most rigorous, easily occurs revealing, there is hidden danger in safe operation of the boiler, to this end, this
Utility model provides a kind of dual hold down gag of cylindrical liquid cylinder pressure, it is possible to make valve operation simple, it is achieved the envelope completely of pipeline
Close.
Utility model content
This utility model is mainly solving the technical problems that provide a kind of dual hold down gag of cylindrical liquid cylinder pressure, and design is closed
Reason, good seal performance, service life is long.
Described a kind of dual hold down gag of cylindrical liquid cylinder pressure, including air cylinder device and two composition portions of hydraulic cylinder device
Point, on air cylinder device, wherein it being provided with cylinder main shaft, hydraulic cylinder device uses cylinder system structure, fills at hydraulic jack
Putting and be provided with hydraulic jack main shaft, at work, cylinder main shaft, hydraulic jack main shaft is connected with the valve rod of valve respectively, gas
Cylinder main shaft, hydraulic jack main shaft can provide a descending or up active force for valve.
Bypass valve includes valve body, is provided with valve base under valve body, is provided with spool in valve body, and spool connects
It is provided with valve rod, and on valve rod, is connected to horizontal drive block, by this utility model one dual pressure of cylindrical liquid cylinder pressure
Tight device, to drive block active force, is then delivered on valve rod by drive block active force, and then realizes the closedown of bypass valve
And unlatching.
A kind of dual hold down gag of cylindrical liquid cylinder pressure, is provided with compressed mouth on air cylinder device, passes through compressed
Mouth is connected to source of the gas, and gas source pipe is connected to compressed air, and compressed air is that air cylinder device is up, descending offer source of the gas power.
So that air cylinder device controls simple and convenient, compressed mouth is provided with control loop, controls loop bag
Include two flow amplifiers being arranged in parallel and localizer, flow amplifier and localizer connect compressed air respectively, by fixed
Position device is convenient controls and adjusts the pressure that source of the gas enters.
Hydraulic cylinder device uses hydraulic cylinder structure, is provided with pouring orifice, and pouring orifice is connected to hydraulic-driven by pipeline and fills
Putting, fluid pressure drive device is provided with oiling machine, and oiling machine is connected to compressed air inlet, is that hydraulic cylinder fills by oiling machine
Offer is provided and compresses power.
To sum up, dual hold down gag, it is respectively adopted cylinder action in power and the oil cylinder of valve rod and acts on valve rod contiguous block
Active force, good sealing effect.
High pressure turbine by valve, process during low pressure bypass valve arrangement work is as follows: illustrate with high pressure turbine by valve:
Operating procedure when closedown: the first step: after high other closedown, the high other cylinder-pressing valve of first release, empty the therapeutic method to keep the adverse QI flowing downwards
Cylinder compressed air, directly over now valve arrow sensing, is then shut off the side's of letting out valve, and when closedown, valve is in level,
3rd step opens air source ball valve, the 4th step: adjust bleed pressure, confirms that Pressure gauge display pressure is at about 10MPa.
Operating procedure time high side is opened, the first step: before opening height side, the high other cylinder-pressing valve of first locking, it is ensured that
Lower cylinder is in running order, immediately below now valve arrow sensing；Second step closes air source ball valve door, and the 3rd step is opened and released
Valve, now valve arrow is in vertical state；Finally confirm that Pressure gauge display pressure is 0.
A kind of optimal technical scheme, in order to control valve pressing square just, is provided with oil level indicator, simultaneously at gas on oil hydraulic cylinder
Connect on cylinder and be provided with gas gauge.
The beneficial effects of the utility model are: this utility model one dual hold down gag of cylindrical liquid cylinder pressure, valve seal
Simply, it is to avoid reveal, it is possible to meet the safe operation requirement of high pressure turbine by valve and low pressure bypass valve arrangement, it is ensured that large-scale firepower
The safety of generating set.
Accompanying drawing explanation
Fig. 1 is boiler bypass schematic diagram；
Fig. 2 is the structural representation of this utility model a kind of cylindrical liquid dual hold down gag of cylinder pressure；
In accompanying drawing, the labelling of each parts is as follows:
1 is air cylinder device, and 2 is hydraulic cylinder device, and 3 is high pressure turbine by valve, and 4 is valve rod, 5 pouring orifices, and 6 is port, 7
For drive block, 8 is cylinder main shaft, and 9 is flow amplifier, and 10 is fluid pressure drive device, and 11 is localizer.
Detailed description of the invention
Below in conjunction with the accompanying drawings preferred embodiment of the present utility model is described in detail, so that advantage of the present utility model
Can be easier to be readily appreciated by one skilled in the art with feature, thus protection domain of the present utility model is made apparent clearly
Define.
Referring to Fig. 1 to Fig. 2, this utility model embodiment includes:
Described a kind of dual hold down gag of cylindrical liquid cylinder pressure, including air cylinder device and two composition portions of hydraulic cylinder device
Point, on air cylinder device, wherein it being provided with cylinder main shaft, hydraulic cylinder device uses cylinder system structure, fills at hydraulic jack
Putting and be provided with hydraulic jack main shaft, at work, cylinder main shaft, hydraulic jack main shaft is connected with the valve rod of valve respectively, gas
Cylinder main shaft, hydraulic jack main shaft can provide a descending or up active force for valve.
Bypass valve includes valve body, is provided with valve base under valve body, is provided with spool in valve body, and spool connects
It is provided with valve rod, and on valve rod, is connected to horizontal drive block, by this utility model one dual pressure of cylindrical liquid cylinder pressure
Tight device, to drive block active force, is then delivered on valve rod by drive block active force, and then realizes the closedown of bypass valve
And unlatching.
A kind of dual hold down gag of cylindrical liquid cylinder pressure, is provided with compressed mouth on air cylinder device, passes through compressed
Mouth is connected to source of the gas, and gas source pipe is connected to compressed air, and compressed air is that air cylinder device is up, descending offer source of the gas power.
So that air cylinder device controls simple and convenient, compressed mouth is provided with control loop, controls loop bag
Include two flow amplifiers being arranged in parallel and localizer, flow amplifier and localizer connect compressed air respectively, by fixed
Position device is convenient controls and adjusts the pressure that source of the gas enters.
Hydraulic cylinder device uses hydraulic cylinder structure, is provided with pouring orifice, and pouring orifice is connected to hydraulic-driven by pipeline and fills
Putting, fluid pressure drive device is provided with oiling machine, and oiling machine is connected to compressed air inlet, is that hydraulic cylinder fills by oiling machine
Offer is provided and compresses power.
To sum up, dual hold down gag, it is respectively adopted cylinder action in power and the oil cylinder of valve rod and acts on valve rod contiguous block
Active force, good sealing effect.
High pressure turbine by valve, process during low pressure bypass valve arrangement work is as follows: illustrate with high pressure turbine by valve:
Operating procedure when closedown: the first step: after high other closedown, the high other cylinder-pressing valve of first release, empty the therapeutic method to keep the adverse QI flowing downwards
Cylinder compressed air, directly over now valve arrow sensing, is then shut off the side's of letting out valve, and when closedown, valve is in level,
3rd step opens air source ball valve, the 4th step: adjust bleed pressure, confirms that Pressure gauge display pressure is at about 10MPa.
Operating procedure time high side is opened, the first step: before opening height side, the high other cylinder-pressing valve of first locking, it is ensured that
Lower cylinder is in running order, immediately below now valve arrow sensing；Second step closes air source ball valve door, and the 3rd step is opened and released
Valve, now valve arrow is in vertical state；Finally confirm that Pressure gauge display pressure is 0.
A kind of optimal technical scheme, in order to control valve pressing square just, is provided with oil level indicator, simultaneously at gas on oil hydraulic cylinder
Connect on cylinder and be provided with gas gauge.
The foregoing is only embodiment of the present utility model, not thereby limit the scope of the claims of the present utility model, every
Utilize equivalent structure or equivalence flow process conversion that this utility model description and accompanying drawing content made, or be directly or indirectly used in
Other relevant technical fields, are the most in like manner included in scope of patent protection of the present utility model.
Claims (2)
1. the dual hold down gag of cylindrical liquid cylinder pressure, it is characterised in that include air cylinder device and hydraulic cylinder device two composition
Part, is wherein provided with cylinder main shaft on air cylinder device, and hydraulic cylinder device uses cylinder system structure, at hydraulic jack
Being provided with hydraulic jack main shaft, cylinder main shaft on device, hydraulic jack main shaft is connected with the valve rod of valve respectively, at air cylinder device
On be provided with compressed mouth, be connected to source of the gas by compressed mouth, gas source pipe is connected to compressed air, and compressed air is
Air cylinder device is up, descending offer source of the gas power, is provided with control loop on compressed mouth, controls loop and includes two also
Flow amplifier and localizer, flow amplifier and localizer that connection is arranged connect compressed air respectively, convenient by localizer
Controlling and adjust the pressure that source of the gas enters, hydraulic cylinder device uses hydraulic cylinder structure, is provided with pouring orifice, and pouring orifice passes through pipeline
Being connected to fluid pressure drive device, fluid pressure drive device is provided with oiling machine, and oiling machine is connected to compressed air inlet.
A kind of dual hold down gag of cylindrical liquid cylinder pressure the most according to claim 1, it is characterised in that on hydraulic oil cylinder pressure
It is provided with oil level indicator, cylinder connects and is provided with gas gauge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620693628.9U CN205841931U (en) | 2016-07-05 | 2016-07-05 | A kind of dual hold down gag of cylindrical liquid cylinder pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620693628.9U CN205841931U (en) | 2016-07-05 | 2016-07-05 | A kind of dual hold down gag of cylindrical liquid cylinder pressure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205841931U true CN205841931U (en) | 2016-12-28 |
Family
ID=58150689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620693628.9U Expired - Fee Related CN205841931U (en) | 2016-07-05 | 2016-07-05 | A kind of dual hold down gag of cylindrical liquid cylinder pressure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205841931U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966454A (en) * | 2019-08-30 | 2020-04-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Quick-response constant-speed gas-liquid execution system |
-
2016
- 2016-07-05 CN CN201620693628.9U patent/CN205841931U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110966454A (en) * | 2019-08-30 | 2020-04-07 | 中国空气动力研究与发展中心超高速空气动力研究所 | Quick-response constant-speed gas-liquid execution system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161228 Termination date: 20170705 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |