CN105673498A - Screw compressor with normally-open intake valve, and start method thereof - Google Patents
Screw compressor with normally-open intake valve, and start method thereof Download PDFInfo
- Publication number
- CN105673498A CN105673498A CN201610204576.9A CN201610204576A CN105673498A CN 105673498 A CN105673498 A CN 105673498A CN 201610204576 A CN201610204576 A CN 201610204576A CN 105673498 A CN105673498 A CN 105673498A
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- CN
- China
- Prior art keywords
- intake valve
- helical
- normally opened
- lobe compressor
- compressor
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/24—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/10—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member
- F04C18/107—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth equivalents, e.g. rollers, than the inner member with helical teeth
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
- F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
- F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C28/00—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids
- F04C28/06—Control of, monitoring of, or safety arrangements for, pumps or pumping installations specially adapted for elastic fluids specially adapted for stopping, starting, idling or no-load operation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
- F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a screw compressor with a normally-open intake valve, and a start method thereof. The screw compressor comprises a compressor shell, the normally-open intake valve and a rotor, wherein the normally-open intake valve comprises an intake valve body, a piston and a connection pipeline; the compressor shell is provided with a working cavity, a pressure tapping is arranged in the working cavity of the screw compressor, and the pressure tapping is arranged in one end of a piston of the normally-open intake valve; after the screw compressor is started, a working pressure is rapidly established in an area where the pressure tapping arranged in the working cavity of the screw compressor is located; through control on air ventilation of the connection pipeline, compressed air with a pressure is enabled to enter one end of the piston of the normally-open intake valve and jack the piston, so that the normally-open intake valve is closed, and then the purpose of closing the normally-open intake valve during the start of the screw compressor to ensure smooth start is achieved; and after the start, through control of an electromagnetic valve on air cutting-off of the connection pipeline, the normally-open intake valve is opened. The start method disclosed by the invention is capable of guaranteeing the smooth start of the compressor.
Description
Technical field
The invention belongs to Compressor Technology field, relate to a kind of helical-lobe compressor, particularly relate to a kind of helical-lobe compressor with normally opened intake valve; Meanwhile, the invention still further relates to the starting method of a kind of helical-lobe compressor with normally opened intake valve.
Background technology
For the helical-lobe compressor with normally opened intake valve, start and generally adopt two ways: one is to reduce electric motor starting frequency, thus reducing startup load; One is by regulating, it is ensured that compressor start often drives air valve into and is closed.
In view of this, nowadays in the urgent need to designing a kind of new helical-lobe compressor, in order to overcome the drawbacks described above that existing helical-lobe compressor exists.
Summary of the invention
The technical problem to be solved is: provide a kind of helical-lobe compressor with normally opened intake valve, it can be ensured that compressor starts smoothly.
Additionally, the present invention provides the starting method of the above-mentioned helical-lobe compressor with normally opened intake valve, it can be ensured that compressor starts smoothly.
For solving above-mentioned technical problem, the present invention adopts the following technical scheme that
A kind of helical-lobe compressor with normally opened intake valve, described helical-lobe compressor includes: compressor housing, intake valve, rotor, and intake valve includes intake valve valve body, piston, electromagnetic valve, connection pipeline, and compressor housing, intake valve valve bodyization design; Described helical-lobe compressor is Singe stage screw compressor;
Described compressor housing is provided with working chamber, and the working chamber at helical-lobe compressor arranges a pressure tappings, is connected with the piston rear end of intake valve by pressure tappings;
After described helical-lobe compressor starts, operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged;
Controlling connection pipeline ventilation by electromagnetic valve, the compression air will with certain pressure enters intake valve piston rear end, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor to start the normally opened intake valve of closedown, thus starting smoothly; After startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
A kind of helical-lobe compressor with normally opened intake valve, described helical-lobe compressor includes: compressor housing, normally opened intake valve, rotor, and normally opened intake valve includes intake valve valve body, piston, connection pipeline;
Described compressor housing is provided with working chamber, and the working chamber at helical-lobe compressor arranges a pressure tappings, and pressure tappings is arranged at piston one end of normally opened intake valve;
After described helical-lobe compressor starts, operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged;
By controlling connection pipeline ventilation, the compression air will with pressure enters piston one end of normally opened intake valve, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor startup to close normally opened intake valve, starts smoothly.
As a preferred embodiment of the present invention, described compressor housing, intake valve valve bodyization design.
As a preferred embodiment of the present invention, described connection pipeline connects electromagnetic valve, controls connect the ventilation of pipeline and die by electromagnetic valve.
As a preferred embodiment of the present invention, after startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
As a preferred embodiment of the present invention, described helical-lobe compressor is Singe stage screw compressor.
A kind of starting method of the above-mentioned helical-lobe compressor with normally opened intake valve, described starting method includes:
Helical-lobe compressor starts, and operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged;
By controlling connection pipeline ventilation, the compression air will with pressure enters piston one end of normally opened intake valve, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor startup to close normally opened intake valve, starts smoothly.
As a preferred embodiment of the present invention, control to connect pipeline ventilation by electromagnetic valve, the compression air with certain pressure is entered intake valve piston one end; After startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
The beneficial effects of the present invention is: the helical-lobe compressor with normally opened intake valve that the present invention proposes, by arranging a pressure tappings in a certain position, compressor operating chamber, by pressure tappings and intake valve valve plate rear end UNICOM, after compressor start, operating pressure is set up rapidly in the region at the pressure tappings place that Singe stage screw compressor working chamber place is arranged, the compression air by connecting tube road with certain pressure is entered intake valve valve plate rear end and valve plate jack-up is closed, thus reaching Singe stage screw compressor to start the purpose closing normally opened intake valve, can ensure that compressor starts smoothly.
Accompanying drawing explanation
Fig. 1 is the structural representation of helical-lobe compressor of the present invention.
Fig. 2 is another structural representation of helical-lobe compressor of the present invention.
Detailed description of the invention
The preferred embodiments of the present invention are described in detail below in conjunction with accompanying drawing.
Embodiment one
Referring to Fig. 1, Fig. 2, present invention is disclosed a kind of helical-lobe compressor with normally opened intake valve, described helical-lobe compressor includes: compressor housing 2, intake valve 1, rotor, and intake valve 1 includes intake valve valve body 11, piston 12, electromagnetic valve, connection pipeline 13. Compressor housing 2, intake valve valve body 11 integrated design, or connected by bindiny mechanisms such as flanges.
Described compressor housing 2 is provided with working chamber, and the working chamber at helical-lobe compressor arranges a pressure tappings, is connected with piston 12 rear end of intake valve by pressure tappings.
After described helical-lobe compressor starts, operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged.
Control to connect pipeline 13 by electromagnetic valve to ventilate, the compression air with certain pressure is entered intake valve piston 12 one end, and by piston 12 jack-up so that normally opened intake valve 1 cuts out, thus reaching helical-lobe compressor to start the normally opened intake valve 1 of closedown, thus starting smoothly;After startup, control to connect pipeline 13 by electromagnetic valve and die, open normally opened intake valve 1.
The present invention also discloses the starting method of the above-mentioned helical-lobe compressor with normally opened intake valve, and described starting method includes: helical-lobe compressor starts, and operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged. Controlling connection pipeline ventilation by electromagnetic valve, the compression air will with certain pressure enters intake valve piston one end, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor to start the normally opened intake valve of closedown, starts smoothly. After startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
Embodiment two
The present embodiment discloses a kind of helical-lobe compressor with normally opened intake valve, and described helical-lobe compressor includes: compressor housing, normally opened intake valve, rotor, and normally opened intake valve includes intake valve valve body, piston, connection pipeline.
Described compressor housing is provided with working chamber, and the working chamber at helical-lobe compressor arranges a pressure tappings, and pressure tappings is arranged at piston one end of normally opened intake valve.
After described helical-lobe compressor starts, operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged.
By controlling connection pipeline ventilation, the compression air will with pressure enters piston one end of normally opened intake valve, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor startup to close normally opened intake valve, starts smoothly.
Embodiment three
The present embodiment and embodiment one are distinctive in that, in the present embodiment, described helical-lobe compressor arranges guiding valve; Described guiding valve is arranged between the first cylinder, the second cylinder.
Described guiding valve includes slide body, the two ends of slide body respectively the first end face, the second end face, and described first end face, the second end face are identical with the area of section of cylinder main body; First end face, the second end face are respectively by described first cylinder, the second cylinder seal.
Described first cylinder is connected with described second exhaust port by the first connecting tube, in the first cylinder, and the pressure at expulsion of the corresponding second compression mechanism of the pressure that the first end face produces; Described second cylinder is closed screw channel by the second connecting tube with last and is connected, and in the second cylinder, the pressure that the compression of the pressure that the second end face produces corresponding second compression mechanism ends, namely before the aerofluxus of the second compression mechanism, last closes the average pressure of screw channel.
Described guiding valve the first cylinder, the second inner pressure of air cylinder driving under find balance so that the volumetric ratio of compressor is best.
If the pressure that the pressure that the first end face produces produces more than the second end face, the pressure that namely pressure at expulsion ends more than compressor compresses, then guiding valve moves to the second cylinder direction so that the pressure that compressor compresses ends improves.
If the pressure that the pressure that the first end face produces produces less than the second end face, the pressure that namely pressure at expulsion ends less than compressor compresses, then guiding valve moves to the first cylinder direction so that the pressure that compressor compresses ends reduces.
Being provided with elastic mechanism in described second cylinder, one end of elastic mechanism connects the second cylinder, and the other end connects the second end face; The unloading ensureing compressor is started by this elastic mechanism.
In sum, the helical-lobe compressor with normally opened intake valve that the present invention proposes, by arranging a pressure tappings in a certain position, compressor operating chamber, by pressure tappings and intake valve valve plate rear end UNICOM, after compressor start, operating pressure is set up rapidly in the region at the pressure tappings place that Singe stage screw compressor working chamber place is arranged, the compression air by connecting tube road with certain pressure is entered intake valve valve plate rear end and valve plate jack-up is closed, thus reaching Singe stage screw compressor to start the purpose closing normally opened intake valve, it can be ensured that compressor starts smoothly.
Here description of the invention and application is illustrative, is not wishing to limit the scope of the invention in above-described embodiment. The deformation of embodiments disclosed herein and change are possible, for those skilled in the art embodiment replace and the various parts of equivalence are known. It should be appreciated by the person skilled in the art that when without departing from the spirit of the present invention or substitutive characteristics, the present invention can in other forms, structure, layout, ratio, and realize with other assembly, material and parts. When without departing from the scope of the invention and spirit, it is possible to embodiments disclosed herein is carried out other deformation and changes.
Claims (8)
1. the helical-lobe compressor with normally opened intake valve, it is characterized in that, described helical-lobe compressor includes: compressor housing, intake valve, rotor, and intake valve includes intake valve valve body, piston, electromagnetic valve, connection pipeline, and compressor housing, intake valve valve bodyization design; Described helical-lobe compressor is Singe stage screw compressor;
Described compressor housing is provided with working chamber, and the working chamber at helical-lobe compressor arranges a pressure tappings, is connected with the piston rear end of intake valve by pressure tappings;
After described helical-lobe compressor starts, operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged;
Controlling connection pipeline ventilation by electromagnetic valve, the compression air will with certain pressure enters intake valve piston rear end, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor to start the normally opened intake valve of closedown, thus starting smoothly; After startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
2. the helical-lobe compressor with normally opened intake valve, it is characterised in that described helical-lobe compressor includes: compressor housing, normally opened intake valve, rotor, normally opened intake valve includes intake valve valve body, piston, connection pipeline;
Described compressor housing is provided with working chamber, and the working chamber at helical-lobe compressor arranges a pressure tappings, and pressure tappings is arranged at piston one end of normally opened intake valve;
After described helical-lobe compressor starts, operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged;
By controlling connection pipeline ventilation, the compression air will with pressure enters piston one end of normally opened intake valve, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor startup to close normally opened intake valve, starts smoothly.
3. the helical-lobe compressor with normally opened intake valve according to claim 2, it is characterised in that:
Described compressor housing, intake valve valve bodyization design.
4. the helical-lobe compressor with normally opened intake valve according to claim 2, it is characterised in that:
Described connection pipeline connects electromagnetic valve, controls connect the ventilation of pipeline and die by electromagnetic valve.
5. the helical-lobe compressor with normally opened intake valve according to claim 2, it is characterised in that:
After startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
6. the helical-lobe compressor with normally opened intake valve according to claim 2, it is characterised in that:
Described helical-lobe compressor is Singe stage screw compressor.
7. the starting method of the helical-lobe compressor with normally opened intake valve that one of claim 1 to 6 is described, it is characterised in that described starting method includes:
Helical-lobe compressor starts, and operating pressure is set up rapidly in the region at the pressure tappings place that helical-lobe compressor working chamber place is arranged;
By controlling connection pipeline ventilation, the compression air will with pressure enters piston one end of normally opened intake valve, and by piston jack-up so that normally opened intake valve cuts out, thus reaching helical-lobe compressor startup to close normally opened intake valve, starts smoothly.
8. starting method according to claim 7, it is characterised in that:
Control to connect pipeline ventilation by electromagnetic valve, the compression air with certain pressure is entered intake valve piston one end; After startup, control to connect pipeline by electromagnetic valve and die, open normally opened intake valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610204576.9A CN105673498A (en) | 2016-04-01 | 2016-04-01 | Screw compressor with normally-open intake valve, and start method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610204576.9A CN105673498A (en) | 2016-04-01 | 2016-04-01 | Screw compressor with normally-open intake valve, and start method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105673498A true CN105673498A (en) | 2016-06-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610204576.9A Pending CN105673498A (en) | 2016-04-01 | 2016-04-01 | Screw compressor with normally-open intake valve, and start method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105673498A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249934A (en) * | 2005-03-08 | 2006-09-21 | Hitachi Industrial Equipment Systems Co Ltd | Oil-less screw air compressor |
| CN102042226A (en) * | 2011-01-05 | 2011-05-04 | 上海维尔泰克螺杆机械有限公司 | Screw compressor having slide valve with flexible volume ratio |
| CN202250869U (en) * | 2011-09-08 | 2012-05-30 | 上海维尔泰克螺杆机械有限公司 | Gas circuit control system of screw compressor |
| CN102536814A (en) * | 2010-12-24 | 2012-07-04 | 株式会社日立产机*** | Oil free screw compressor |
| CN104114868A (en) * | 2012-02-14 | 2014-10-22 | 维尔吉利奥·米耶托 | Volumetric screw compressor |
-
2016
- 2016-04-01 CN CN201610204576.9A patent/CN105673498A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006249934A (en) * | 2005-03-08 | 2006-09-21 | Hitachi Industrial Equipment Systems Co Ltd | Oil-less screw air compressor |
| CN102536814A (en) * | 2010-12-24 | 2012-07-04 | 株式会社日立产机*** | Oil free screw compressor |
| CN102042226A (en) * | 2011-01-05 | 2011-05-04 | 上海维尔泰克螺杆机械有限公司 | Screw compressor having slide valve with flexible volume ratio |
| CN202250869U (en) * | 2011-09-08 | 2012-05-30 | 上海维尔泰克螺杆机械有限公司 | Gas circuit control system of screw compressor |
| CN104114868A (en) * | 2012-02-14 | 2014-10-22 | 维尔吉利奥·米耶托 | Volumetric screw compressor |
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Application publication date: 20160615 |