CN201779019U - Air inlet flow adjusting valve of high-displacement screw air compressor - Google Patents
Air inlet flow adjusting valve of high-displacement screw air compressor Download PDFInfo
- Publication number
- CN201779019U CN201779019U CN2010202765132U CN201020276513U CN201779019U CN 201779019 U CN201779019 U CN 201779019U CN 2010202765132 U CN2010202765132 U CN 2010202765132U CN 201020276513 U CN201020276513 U CN 201020276513U CN 201779019 U CN201779019 U CN 201779019U
- Authority
- CN
- China
- Prior art keywords
- valve
- control gas
- joint
- servo cylinder
- gas inlet
- 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
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 11
- 230000001105 regulatory Effects 0.000 claims description 17
- 230000002035 prolonged Effects 0.000 abstract description 2
- 210000003128 Head Anatomy 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 210000000664 Rectum Anatomy 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 240000004859 Gamochaeta purpurea Species 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000001681 protective Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003313 weakening Effects 0.000 description 1
Abstract
The utility model relates to a gas inlet flow adjusting valve of a high-displacement screw gas compressor, which is characterized in that a support is mounted on a butterfly valve, the front end of a double-acting servo cylinder is connected with a valve plate rotating shaft of the butterfly valve while the rear end is connected with the support, a two-position three-way electromagnetic valve and a gas inlet bypass adjusting block are directly mounted on the butterfly valve, control gas from oil gas barrel of the air compressor is respectively connected with control gas inlets of the two-position three-way electromagnetic valve, a direct proportion valve and a pressure adjusting valve, one channel of an exhaust opening of the two-position three-way electromagnetic valve is connected with a control gas inlet at the rear end of the servo cylinder through a connecting pipeline and a joint while the other channel of the exhaust opening is connected with an air release valve, the air release valve is connected with the air inlet bypass adjusting block through a joint, an exhaust opening of the pressure adjusting valve is connected to a control gas inlet of the front end of the servo cylinder through a pipeline and a joint, one end of a one-way valve is connected to the a control gas inlet at the front end of the servo cylinder through a pipeline and a joint while the other end of the one-way valve is connected to the control gas inlet of the direct proportion valve, number of reverse turns of a machine head is small, and the service life of a shaft seal is prolonged.
Description
Technical field
The utility model relates to a kind of big displacement screw air compressor, relates in particular to a kind of structure of big displacement screw air compressor air intake flow control valve.
Background technique
Usually the air compressor user always selectes the flow of air compressor according to the operating mode of gas consumption maximum, for the volume flow that makes air compressor and the gas consumption of actual conditions reach balance, be everlasting and adopt methods such as rotational speed regulation, air inlet restriction adjusting, stall adjusting in the unit, wherein the air inlet restriction regulating method has obtained to use widely in fuel injection helical lobe compressor.By on the sucking pipe of helical-lobe compressor, installing suction throttling valve additional, utilize air-breathing throttling, just can realize regulating the volume flow of compressor.
At present the used intake-air throttle valve of industry often have open, normally closed two kinds of forms.For big displacement screw air compressor, often drive air valve into if adopt, it is bigger then to start immediate current, thereby electric elements type selectings such as contactor, sky switch are proposed high requirement; If adopt common normal close type suction valve, when big displacement screw air compressor research and development and start debugging, its air inlet bypass is regulated and is often adopted the method that has level to change by-pass hole bore or the pre-opening angle of step-less adjustment dish plate to realize that operation is difficulty relatively.Though common suction valve possesses check function, for big discharge capacity air compressor, because barrel of oil and gas and gas exhaust piping capacity are bigger, the head 5-7 circle that often will reverse during shutdown, thus quicken the inefficacy of head axle envelope.
Summary of the invention
The utility model technical issues that need to address have provided a kind of big displacement screw air compressor air intake flow control valve, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: valve setting valve, double-action servo cylinder, support, direct proportaion valve, air inlet bypass regulating block, two-bit triplet solenoid valve, atmospheric valve, pressure regulator valve, one-way valve and connecting pipeline and joint; Wherein: support is installed on the butterfly valve, and the front end of double-action servo cylinder links to each other with the valve plate rotating shaft of butterfly valve, and the rear end links to each other with support; Two-bit triplet battery valve and air inlet bypass regulating block are directly installed on the butterfly valve; The control gas that comes from air compressor oil-gas barrel enters the mouth by the control gas that joint and connecting pipeline are connected two-bit triplet battery valve, direct proportaion valve and pressure regulator valve respectively; The relief opening of two-bit triplet battery valve by connecting pipeline and joint one tunnel and servo cylinder rear end control gas inlet link to each other, another road links to each other with atmospheric valve; Atmospheric valve links to each other with air inlet bypass regulating block by joint; The pressure regulator valve relief opening is connected to the front-end control gas inlet of servo cylinder by pipeline and joint; One-way valve enters the mouth by the front-end control gas that pipeline and joint one end are connected to servo cylinder, and the other end is connected to the control gas inlet of direct proportaion valve.
Compared with prior art, the beneficial effects of the utility model are: inrush current is little, and open-close convenient is rapid, and adjusting function is good, and the head counter-rotating number of turns is few, and the axle envelope life-span prolongs.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As shown in Figure 1, the utility model comprises: valve setting valve 1, double-action servo cylinder 9, support 8, direct proportaion valve 5, air inlet bypass regulating block 2, two-bit triplet solenoid valve 4, atmospheric valve 3, pressure regulator valve 7, one-way valve 6 and connecting pipeline 11 and joint 10; Wherein: support 8 is installed on the butterfly valve 1, and the front end of double-action servo cylinder 9 links to each other with the valve plate rotating shaft of butterfly valve 1, and the rear end links to each other with support 8; Two-bit triplet battery valve 4 and air inlet bypass regulating block 2 are directly installed on the butterfly valve 1; The control gas that comes from the air compressor oil-gas barrel (not shown) enters the mouth by the control gas that joint 10 and connecting pipeline 11 are connected two-bit triplet battery valve 4, direct proportaion valve 5 and pressure regulator valve 7 respectively; The relief opening of two-bit triplet battery valve 4 by connecting pipeline and joint one tunnel and servo cylinder 9 rear ends control gas inlet link to each other, another road links to each other with atmospheric valve 3; Atmospheric valve 3 links to each other with air inlet bypass regulating block 2 by joint; Pressure regulator valve 7 relief openings are connected to the front-end control gas inlet of servo cylinder 9 by pipeline and joint; One-way valve 6 enters the mouth by the front-end control gas that pipeline and joint one end are connected to servo cylinder 9, and the other end is connected to the control gas inlet of direct proportaion valve 5.
Adopt unit of the present utility model to have four kinds of working state: A, state of starting operating; B, load operation operating mode C, adjusting operating conditions; D, unloading operating mode.
Type with rated pressure 8bar (116psi) is that example is introduced its working principle respectively below.
Butterfly valve is normally closed
The direct proportaion valve is normally closed
The two-bit triplet solenoid valve is often opened (1﹠amp; 2 disconnect 1﹠amp; 3 connect)
Atmospheric valve is normally closed
Pressure regulator valve 3bar
State of starting operating:
Press start key, electric motor starting, the compressor suction valve sucks a small amount of gas by air inlet bypass regulating block 2, two-bit triplet solenoid valve 4 is not temporarily, this moment, atmospheric valve 3 opened that (pressurized air is divided into two-way in air inlet bypass regulating block 2, the one tunnel releases before the suction valve valve plate, releases behind the suction valve valve plate in another road, can reach the purpose of noise when weakening unloading like this, the two-way latus rectum can be by adjusting bolt step-less adjustment up and down) make deaerator be in the emptying state; A small amount of gas of start moment suction enters servo cylinder 9 rear ends control gas inlet by two-bit triplet solenoid valve 4 forces butterfly valve 1 to be closed, bypass channel on the air inlet bypass regulating block 2 (its latus rectum can also by regulating the bolt step-less adjustment) allows a spot of air to enter compressor, its start pressure is maintained in 1.5-3.5bar (22-51psi) scope substantially, its value of the compressor of different size is inconsistent, and compressor has been realized light-load starting.
The load operation operating mode:
Behind set time (be generally 6-10 second), the motor full speed running, at this moment, two-bit triplet solenoid valve 4, atmospheric valve 3 cuts out, air-breathing vacuum action is at servo cylinder 9 rear ends control gas inlet, (generally be set in 3bar through pressure regulator valve 7, its effect is to unload preceding moment when holding to transfer to, the suction valve valve plate guarantees to have corresponding minimum aperture, up to unloading beginning) control gas act on servo cylinder 9 front-end control gas inlet, butterfly valve 1 is all opened, the compressor loads operation, system pressure is raised to 4.0bar (60psi) rapidly.
When system pressure surpassed 4.0bar (60psi), minimum pressure valve was opened, and unit begins outside air feed.At this moment, two-bit triplet solenoid valve 4 maintains electricity, and butterfly valve 1 is in full-gear, the unit load operation.Subsequently, system pressure reaches rated pressure very soon, and unit enters normal operating conditions.Unless client's gas consumption changes, then operation continuously under this state of unit.
Regulate operating conditions:
When client's gas consumption during less than specified air displacement, intrasystem pressure will raise.(to the 8Bar unit is that exhaust pressure is when reaching 8.06-8.13Bar (117-118psi) when pressure surpasses rated pressure 0.06 to 0.13Bar (1-2psi), 5 actions of direct proportaion valve, control gaseous enters servo cylinder 9 rear ends control gas inlet, reduce the aperture of butterfly valve 1, thereby reduce the air inflow of compressor.The restriction effect of butterfly valve 1 is directly proportional with line pressure, and line pressure is big more, and butterfly valve 1 aperture is just more little, and restriction effect is just obvious more.The tolerance regulation range of this direct proportaion valve 5 is 100%～20%, and this moment, corresponding line pressure was 8.07～8.6bar (117～125psi).At this moment, two-bit triplet solenoid valve 4 continues to maintain.
If at this moment compressed-air actuated demand increases, the pressure in the deaerator can descend.When pressure drops to the pressure set points that is lower than direct ratio row valve 5, direct proportaion valve 5 will cut out, and all open thereby control butterfly valve 1, so unit full load operation again.
The unloading operating mode:
When client's gas consumption continue to be reduced to less than the specified air displacement of compressor 20% the time, line pressure will be above the setting value 8.6bar (125psi) of controller (pressure switch), at this moment, the normally-closed contact of controller (pressure switch) disconnects, cut off the power supply of two-bit triplet solenoid valve 4, control gas enters servo cylinder rear end control gas inlet by two-bit triplet solenoid valve 4, and butterfly valve 1 cuts out.This moment, atmospheric valve 3 was opened, and the pressurized air in the deaerator is bled off, and relied on a small amount of air inlet of bypass passageways of air inlet bypass regulating block 2, and unit pressure maintains in 1.5～3.5bar (22-51psi) scope, has guaranteed the circulation of lubricant oil in the oil-way system.In this pressure range, minimum pressure valve is closed, and user's pipeline and unit are cut off, and unit will no-load running under a lower back pressure, saves energy consumption.
If at this moment client's gas consumption increases, then line pressure descends.When pressure is lower than 7.3bar (106psi), the pressure switch contact closure, two-bit triplet solenoid valve 4 again, atmospheric valve 3 cuts out, pressurized air in the deaerator stops emptying, and air-breathing vacuum action is at servo cylinder 9 rear ends control gas inlet, and the control gas of process pressure regulator valve 7 (generally being set in 3bar) acts on servo cylinder front-end control gas inlet, butterfly valve 1 is opened thereupon, and compressor enters the load operation state again.
Shutdown is divided into general shutdown and emergency shutdown.
The general shutdown
After pressing stop botton, two-bit triplet solenoid valve 4 dead electricity, control gas enters servo cylinder rear end control gas inlet by two-bit triplet solenoid valve 4, and butterfly valve 1 cuts out.Simultaneously, atmospheric valve 3 is opened, the air in the deaerator is drained in the atmosphere, and after time-delay in 15 seconds, when treating certain value that the pressure in the oil drum falls, the motor stall.
Emergency shutdown
When delivery temperature surpasses 110 ℃ or motor and causes the overcurrent protective device action because of overload, power supply will be cut off, and motor is stall at once, two-bit triplet solenoid valve 4 dead electricity simultaneously, and atmospheric valve 3 is opened, and suction valve cuts out.Have only when unit abnormal conditions occur in running, just allow to press the emergency shutdown button, otherwise may cause system down.
The utility model cancellation non-return mechanism, when the screw air compressor system design, be used in combination with venting check valve and oil cut-off valve, check function is moved forward to relief opening and jet, thereby reducing the head counter-rotating impacts, the exemplary application proof head counter-rotating number of turns is reduced to below 2 circles, has prolonged the head axle greatly and has sealed working life.Venting check valve can prevent that the barrel of oil and gas compressed air from flowing backwards, and causes rotor counter-rotating and oil laden air to spray from air-strainer.Oil cut-off valve cut out when compressor stopped, and the back pressure machine host inlet that contracts is emerged from breathing filter otherwise oil separator, oil cooler inner high voltage lubricant oil flow backwards in a large number, pollutes air-breathing filter core.During start, oil cut-off valve is opened under the control of compressor host exhaust pressure, guarantees that oil circuit is unimpeded.
Claims (1)
1. one kind big displacement screw air compressor air intake flow control valve is characterized in that comprising: valve setting valve, double-action servo cylinder, support, direct proportaion valve, air inlet bypass regulating block, two-bit triplet solenoid valve, atmospheric valve, pressure regulator valve, one-way valve and connecting pipeline and joint; Wherein: support is installed on the butterfly valve, and the front end of double-action servo cylinder links to each other with the valve plate rotating shaft of butterfly valve, and the rear end links to each other with support; Two-bit triplet battery valve and air inlet bypass regulating block are directly installed on the butterfly valve; The control gas that comes from air compressor oil-gas barrel enters the mouth by the control gas that joint and connecting pipeline are connected two-bit triplet battery valve, direct proportaion valve and pressure regulator valve respectively; The relief opening of two-bit triplet battery valve by connecting pipeline and joint one tunnel and servo cylinder rear end control gas inlet link to each other, another road links to each other with atmospheric valve; Atmospheric valve links to each other with air inlet bypass regulating block by joint; The pressure regulator valve relief opening is connected to the front-end control gas inlet of servo cylinder by pipeline and joint; One-way valve enters the mouth by the front-end control gas that pipeline and joint one end are connected to servo cylinder, and the other end is connected to the control gas inlet of direct proportaion valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202765132U CN201779019U (en) | 2010-07-30 | 2010-07-30 | Air inlet flow adjusting valve of high-displacement screw air compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202765132U CN201779019U (en) | 2010-07-30 | 2010-07-30 | Air inlet flow adjusting valve of high-displacement screw air compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201779019U true CN201779019U (en) | 2011-03-30 |
Family
ID=43792231
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202765132U Expired - Fee Related CN201779019U (en) | 2010-07-30 | 2010-07-30 | Air inlet flow adjusting valve of high-displacement screw air compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201779019U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653462A (en) * | 2014-04-25 | 2015-05-27 | 柳州富达机械有限公司 | Volume flow adjusting device of compressor |
| CN105134609A (en) * | 2015-10-12 | 2015-12-09 | 南通市红星空压机配件制造有限公司 | Air inlet valve for screw vacuum pump |
| CN107664112A (en) * | 2016-07-28 | 2018-02-06 | 苏州寿力气体设备有限公司 | Intake valve |
-
2010
- 2010-07-30 CN CN2010202765132U patent/CN201779019U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104653462A (en) * | 2014-04-25 | 2015-05-27 | 柳州富达机械有限公司 | Volume flow adjusting device of compressor |
| CN105134609A (en) * | 2015-10-12 | 2015-12-09 | 南通市红星空压机配件制造有限公司 | Air inlet valve for screw vacuum pump |
| CN105134609B (en) * | 2015-10-12 | 2017-06-16 | 南通市红星空压机配件制造有限公司 | A kind of intake valve for screw vacuum pump |
| CN107664112A (en) * | 2016-07-28 | 2018-02-06 | 苏州寿力气体设备有限公司 | Intake valve |
| CN107664112B (en) * | 2016-07-28 | 2019-05-28 | 苏州寿力气体设备有限公司 | Intake valve |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1039639A (en) | The charged piston internal-combustion engine that several exhaust-gas turbochargers in parallel are arranged | |
| CN201779019U (en) | Air inlet flow adjusting valve of high-displacement screw air compressor | |
| RU2528768C2 (en) | Method of compressor control | |
| CN201013559Y (en) | Air-intake lifting valve | |
| CN203214165U (en) | Turbocharger with variable section | |
| CN202250869U (en) | Gas circuit control system of screw compressor | |
| CN102182544A (en) | Air inlet regulating device of flow-passage-changeable turbine | |
| CN113969829A (en) | Supercharger bypass system | |
| RU2426011C2 (en) | Method of controlling turbo compressor | |
| CN204827931U (en) | Vacuum control device is prevented to screw rod host computer | |
| CN101457689A (en) | Method for operating a compressor | |
| JPH0610876A (en) | Capacity control method for lubricating screw compressor | |
| CN101649784A (en) | Brake managing system of engine | |
| CN201779018U (en) | Oil pressure control air inlet valve for oilless screw compressor | |
| CN201396284Y (en) | Gas quantity proportion regulation control system of air compressor | |
| CN206785638U (en) | A kind of bavin moves screw compressor control system | |
| CN112648168B (en) | Reciprocating compression expander | |
| CN100582538C (en) | Safe buffering two-way valve | |
| CN206054232U (en) | The adjustable energy-saving air compressor of distributive value | |
| CN110714804B (en) | Bypass control system suitable for CAES system expansion unit | |
| CN201496153U (en) | Engine brake management system | |
| CN103375391A (en) | Compressor energy regulation mechanism and operating process thereof | |
| CN208996953U (en) | A kind of protection structure for shutting down oil-break for two stages of compression screw air compressor | |
| CN201535385U (en) | Hammer/energy accumulator composite hydraulic control slowly closing valve actuator | |
| CN216642427U (en) | Compressor control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20130730 |