CN106545523B - Prevent the end cover structure and processing method of vertical subdivision compressor operating gas leakage - Google Patents
Prevent the end cover structure and processing method of vertical subdivision compressor operating gas leakage Download PDFInfo
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- CN106545523B CN106545523B CN201610967003.1A CN201610967003A CN106545523B CN 106545523 B CN106545523 B CN 106545523B CN 201610967003 A CN201610967003 A CN 201610967003A CN 106545523 B CN106545523 B CN 106545523B
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- Prior art keywords
- end cover
- hole
- dry gas
- air inlet
- cover body
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/4206—Casings; Connections of working fluid for radial or helico-centrifugal pumps especially adapted for elastic fluid pumps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/08—Sealings
- F04D29/083—Sealings especially adapted for elastic fluid pumps
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Applications Or Details Of Rotary Compressors (AREA)
Abstract
The invention discloses a kind of end cover structures for preventing vertical subdivision compressor operating gas leakage, including end cover body, air inlet, connecting hole and dry gas seals hole in the end cover body are set, the air inlet is connected with described connecting hole one end, the connecting hole other end is connected with the dry gas seals hole, and the dry gas seals hole is connected to dry gas seals area.The invention also discloses the processing methods for the end cover structure for preventing vertical subdivision compressor operating gas leakage, and the compressor including the end cover structure for preventing vertical subdivision compressor operating gas leakage.The end cover structure and its processing method provided by the invention for preventing vertical subdivision compressor operating gas leakage, the phenomenon that can preventing the working media in compressor from revealing from the connecting hole for the end cover structure for preventing vertical subdivision compressor operating gas leakage, and prevent vertical subdivision compressor operating gas leakage end cover structure it is high in machining efficiency, processing cost is low.
Description
Technical field
The present invention relates to centrifugal compressor technical field, in particular to a kind of compressor prevents vertical subdivision compressor
The end cover structure and its processing method of working gas leakage.
Background technique
Centrifugal compressor is that a kind of rotating vanes are mechanical.In centrifugal compressor, gas is along perpendicular to pressure
What the radial direction of contracting arbor was run, the raising of gas pressure is reached using blade and gas interaction.
Centrifugal compressor occupies an important position in national economy.It is especially defeated in metallurgy, petrochemical industry, natural gas
It send, freeze and the industrial departments such as power are widely applied.
Vertical subdivision compressor is one kind of centrifugal compressor, it is by end cap, casing, partition, rotor, sealing etc. zero
Part composition, can carry out the compression of larger pressed gas.Wherein end cap is the important component of vertical subdivision compressor, is made
It is allowed to not leak out from compressor axial ends with to block the gas in casing, to make gas can only be by the air outlet that designs
Discharge.
In the real work of compressor, present end cover structure often occurs what dielectric gas was revealed from welding silk plug position
Situation will cause huge hidden danger to personal safety as well as the property safety especially after toxic, inflammable and explosive dielectric gas is revealed.
Summary of the invention
Technical problem to be solved by the invention is to provide one kind can prevent working media gas from revealing within the compressor
The end cover structure and its processing method for preventing vertical subdivision compressor operating gas leakage.
In order to solve the above technical problems, the present invention provides a kind of ends for preventing vertical subdivision compressor operating gas leakage
Air inlet, connecting hole and dry gas seals hole in the end cover body, the air inlet is arranged in lid structure, including end cover body
Hole is connected with described connecting hole one end, and the connecting hole other end is connected with the dry gas seals hole, the dry gas seals
Hole is connected to dry gas seals area.
Further, the connecting hole is the internal holes being arranged in inside the end cover body.
Further, the air inlet and the dry gas seals hole are straight hole and/or the angling hole to be tilted a certain angle.
Further, the aperture in the air inlet and the dry gas seals hole is 15mm, 20mm, 25mm or 30mm.
The present invention also provides the processing of the end cover structure for preventing vertical subdivision compressor operating gas leakage described in one kind
Method includes the following steps:
Process end cover body；
Dry gas seals area is processed in the end cover body；
Using drilling machining method in the end cover body processing gas inlet hole and dry gas seals hole；
Connecting hole is processed by internal Bend Hole Machining dedicated unit on sinking EDM lathe.
Further, the processing method in the air inlet and dry gas seals hole is to press the end cap master using numerical control borer
Body benchmark beats table centering, and installation extends milling head cooperation lengthening spiral bit, and drilling air inlet and dry gas are close respectively in end cover body
Sealing of hole is to drawing requirement size.
Further, the aperture in the air inlet and dry gas seals hole is worked into 15mm, 20mm, 25mm or 30mm.
Further, the control of the hole tolerance in the air inlet and dry gas seals hole is in ± 0.1mm.
Further, the processing method of the connecting hole is: will process the end cover body of air inlet and dry gas seals hole
Clamping adds with the steel band of sinking EDM machine tool motion axis connection in spark-erosion sinking on sinking EDM lathe
It is moved under the control of work lathe, the electrode for the inside Bend Hole Machining dedicated unit being connected with steel band is driven to add from internal bent hole
The positioning shaft sleeve of work dedicated unit protrudes into the air inlet of end cover body, the air inlet in end cover body and dry gas seals hole it
Between blind area in process connecting hole.
The present invention also provides a kind of compressors, including the end for preventing vertical subdivision compressor operating gas leakage
Lid structure, the end cover structure for preventing vertical subdivision compressor operating gas leakage includes end cover body, is arranged at the end
Air inlet, connecting hole and dry gas seals hole in lid main body, the air inlet are connected with described connecting hole one end, the connection
The hole other end is connected with the dry gas seals hole, and the dry gas seals hole is connected to dry gas seals area.
The end cover structure provided by the invention for preventing vertical subdivision compressor operating gas leakage, connecting hole are only connected to
Between air inlet and dry gas seals hole, the outside of the end cover structure main body of subdivision compressor operating gas leakage vertical with preventing does not have
There is direct connection, therefore be not in the problem of working media in compressor is revealed from connecting hole, has not only thoroughly prevented leakage
The generation of gas phenomenon, while also improving the beauty for preventing the end cover structure entirety of vertical subdivision compressor operating gas leakage
Property.The present invention provides the end cover structure processing method for preventing vertical subdivision compressor operating gas leakage, using spark-erosion sinking
Machining tool and the inside Bend Hole Machining dedicated unit of development complete the connecting hole between air inlet and two hole of dry gas seals hole
Connection processing, and reach target call.This processing method process is few, and difficulty of processing is low, and required time is short, efficiency
Height improves processing efficiency.Also, in terms of manufacturing cost, it is bent using the inside of sinking EDM lathe and development
Hole machined dedicated unit, which processes connecting hole, can reduce the processing in hole than the purely mechanic processing auxiliary process hole of traditional structure
Difficulty reduces processing cost, so as to reduce the manufacturing cost of compressor.
Detailed description of the invention
Fig. 1 is the structure of the end cover structure provided in an embodiment of the present invention for preventing vertical subdivision compressor operating gas leakage
Schematic diagram.
Fig. 2 is the end cover structure processing side provided in an embodiment of the present invention for preventing vertical subdivision compressor operating gas leakage
The structural schematic diagram of internal Bend Hole Machining device in method.
Specific embodiment
Referring to Fig. 1, a kind of end cap knot preventing vertical subdivision compressor operating gas leakage provided in an embodiment of the present invention
Air inlet 22, connecting hole 23 and dry gas seals hole 24 in end cover body 21, air inlet is arranged in structure, including end cover body 21
22 are connected with 23 one end of connecting hole, and the other end of connecting hole 23 is connected with dry gas seals hole 24, and dry gas seals hole 24 is connected to
Dry gas seals area 25.
Wherein, connecting hole 23 is the internal holes being arranged in inside end cover body 21, is connected to air inlet 22 and dry gas seals
It, can be to avoid working gas from connecting hole 23 to 21 outward leakage of end cover body between hole 24.
Wherein, in order to complete the process air inlet 22 and dry gas seals hole 24 by tradition machinery, processing cost is reduced,
Air inlet 22 and dry gas seals hole 24 are straight hole.Air inlet 22 and dry gas seals hole 24 can all be the end with end cover body 21
The parallel straight hole in face, perhaps all for the inclined straight hole or air inlet 22 angled with the end face of end cover body 21 with
24 two, dry gas seals hole Kong Zhongyi are the straight hole for being parallel to 21 end face of end cover body, another is and 21 end face of end cover body
Angled inclined straight hole.Air inlet 22 and the aperture standard convention in dry gas seals hole 24 are 15mm, 20mm, 25mm
Or tetra- kinds of 30mm, it is also not excluded for other specific aperture sizes under special operation condition requirement certainly.Air inlet 22 and dry gas seals hole 24
The length in both holes is depending on the size of end cover body 21.Aperture of the aperture of connecting hole 23 usually to be equal to air inlet 22
Size is advisable, the aperture of connecting hole 23 it is the smaller the better so that it is convenient to connecting hole 23 processing, reduce processing cost.As this hair
A kind of bright specific embodiment, in order to shorten the length of connecting hole 23 to greatest extent, the air inlet 22 of the present embodiment and dry
Airtight sealing of hole 24 is the inclined straight hole angled with the end face of end cover body 21, can guarantee in this way air inlet 22 with
23 length of connecting hole between dry gas seals hole 24 is as short as possible, to facilitate the processing of connecting hole 23, reduces processing cost.
The processing method of the end cover structure provided by the invention for preventing vertical subdivision compressor operating gas leakage, including such as
Lower step:
End cover body 21 is processed, is included the following steps: first using the commonly vertical each portion of vehicle roughing end cover body 21, and stay
Then the surplus of 5mm is heat-treated end cover body 21 to adjust the mechanical strength of end cover body 21, if end cap master
The material that body 21 uses is No. 20 steel, then is heat-treated using the process of 890 DEG C of normalizing, 640 DEG C of tempering, if end cap master
The material that body 21 uses then carries out hot place using 980 DEG C of normalizing, 970 DEG C of quenching and 680 DEG C of tempering process for KMN steel
The mechanical strength of end cap theme has been effectively ensured in reason, process above.Finishing is finally carried out to end cover body 21 using numerical control vertical lathe
Work: 1, it mills: being processed by the space that milling machine can not process bearing split, centering plane and common vertical vehicle；2, boring:
Pass through the various threaded holes of Boring machine processing bearing split；3, vehicle: by lathe by the outer circle of end cover body 21, end face, inner hole
Time processing finishes；4, boring: the various holes of end cover body 21 and slot time processing are finished by boring machine.
After end cover body 21 processes, then dry gas seals area 25 is processed in end cover body 21, using numerical control vertical lathe, by end
The benchmark of lid main body 21 plays surface centering workpiece, finds zero point accurately, by zero point to knife, the initial position of processing is found out, in numerical control lathe
The program that tool feeding is inputted on bed, each slot time processing of 25 different-diameter of dry gas seals area is finished.
Fluted drill processing gas inlet hole 22 and dry gas are lengthened using extension milling head or Universal milling head cooperation on numerical control borer again
Sealing hole 24 plays surface centering workpiece by the benchmark of end cover body 21 using numerical control borer, and installation Universal milling head cooperation lengthens fiber crops
Flower drill bit drilling air inlet 22 to drawing size requires.Surface centering work is beaten by the benchmark of end cover body 21 using numerical control borer
Part, installation extend milling head cooperation and lengthen spiral bit drilling dry gas seals hole 24 to the requirement of drawing size.Wherein, 22 He of air inlet
The diameter of 24 both ends of the hole of dry gas seals hole forms standard specification, for example being processed into diameter is 15mm, 20mm, 25mm, 30mm etc., this
The diameter structure of sample is beneficial to carry out the standardized designs of bending machining dedicated unit.Also, by air inlet 22 and dry gas seals
The hole tolerance in hole 24 is controlled in ± 0.1mm.
Finally, processing connecting hole 23 by internal Bend Hole Machining dedicated unit on sinking EDM lathe.It is interior
Portion's Bend Hole Machining dedicated unit is arranged on sinking EDM lathe, and 21 clamping of end cover body is in sinking EDM
On lathe.Referring to fig. 2, internal Bend Hole Machining dedicated unit includes clamping tooling 11, positioning shaft sleeve 12, electrode 13 and steel band,
Clamping tooling 11 is used to for positioning shaft sleeve 12 being fixed on the air inlet 22 of end cover body 21, and positioning shaft sleeve 12 is used for electrode 13
The direction of motion positioned, and shield to electrode 12.Steel band one end is connected to the fortune of sinking EDM lathe
On moving axis, the other end of steel band is connect with electrode 13.Electrode 13 protrudes into positioning shaft sleeve 12 from positioning shaft sleeve 12, spark-erosion sinking
Steel band operation is driven when machining tool works, steel strip driving electrode 13 is mobile, and electrode 13 is made to protrude into end cap master from positioning shaft sleeve 12
In the enterprising stomata 22 of body 21, so as to be processed in the blind area between the air inlet 22 in end cover body 21 and dry gas seals hole 24
Connecting hole 23.Since sinking EDM lathe drives steel band to generate the operation variation for moving up and down and rotating in angle, from
And strip is made to move up and down and rotate the variation of angle in edm process with moving electrode 13, electrode 13 is adjusted from air inlet
It is mobile to blind area in hole 22, so that connecting hole 23 is processed in blind area, until air inlet 22 and dry gas seals hole 24 penetrate through.Electrode
13 end is respectively communicated with lead channel 14 and liquid outlet groove 15, and electrode machining liquid can be flowed into along lead channel 14 need to process place,
Meanwhile used electrode machining liquid can also flow out under the action of extruding force from liquid outlet groove 15, to play the role of chip removal.It is logical
The continuous working fluid for updating machining area is crossed, and under the electric spark effect that electrode 13 generates, connecting hole may finally be completed
23 processing.
The present invention also provides a kind of compressor, including casing, partition, rotor, sealing and described vertical subdivision is prevented
The end cover structure of compressor operating gas leakage, this prevents the specific of the end cover structure of vertical subdivision compressor operating gas leakage
Structure at least has referring to above-described embodiment since this multistage pump uses whole technical solutions of above-mentioned all embodiments
There are all beneficial effects brought by the technical solution of above-described embodiment, this is no longer going to repeat them.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (8)
1. a kind of end cover structure for preventing vertical subdivision compressor operating gas leakage, which is characterized in that including end cover body, if
Air inlet, connecting hole and dry gas seals hole in the end cover body are set, the air inlet is connected with described connecting hole one end
Logical, the connecting hole other end is connected with the dry gas seals hole, and the dry gas seals hole is connected to dry gas seals area, wherein
The angled angling hole in the end face of the air inlet and the dry gas seals Kong Weiyu end cover body.
2. the end cover structure according to claim 1 for preventing vertical subdivision compressor operating gas leakage, which is characterized in that
The connecting hole is the internal holes being arranged in inside the end cover body.
3. the end cover structure according to claim 2 for preventing vertical subdivision compressor operating gas leakage, which is characterized in that
The aperture in the air inlet and the dry gas seals hole is 15mm, 20mm, 25mm or 30mm.
4. a kind of processing method of the end cover structure described in claim 1 for preventing vertical subdivision compressor operating gas leakage,
It is characterized by comprising the following steps:
Process end cover body；
Dry gas seals area is processed in the end cover body；
Using drilling machining method in the end cover body processing gas inlet hole and dry gas seals hole；
Connecting hole is processed by internal Bend Hole Machining dedicated unit on sinking EDM lathe.
5. the processing method of the end cover structure according to claim 4 for preventing vertical subdivision compressor operating gas leakage,
It is characterized in that, the processing method in the air inlet and dry gas seals hole is, the end cover body benchmark is pressed using numerical control borer
Table centering is beaten, installation extends milling head cooperation lengthening spiral bit and distinguishes drilling air inlet and dry gas seals hole extremely in end cover body
Drawing requirement size.
6. the processing method of the end cover structure according to claim 5 for preventing vertical subdivision compressor operating gas leakage,
It is characterized in that, the aperture in the air inlet and dry gas seals hole is worked into 15mm, 20mm, 25mm or 30mm.
7. the processing method of the end cover structure according to claim 6 for preventing vertical subdivision compressor operating gas leakage,
It is characterized in that, the control of the hole tolerance in the air inlet and dry gas seals hole is in ± 0.1mm.
8. the processing method of the end cover structure according to claim 7 for preventing vertical subdivision compressor operating gas leakage,
It is characterized in that, the processing method of the connecting hole is: the end cover body clamping for processing air inlet and dry gas seals hole is existed
On sinking EDM lathe, the steel band with sinking EDM machine tool motion axis connection is in sinking EDM lathe
Control under move, drive the electrode of inside Bend Hole Machining dedicated unit being connected with steel band dedicated from internal Bend Hole Machining
The positioning shaft sleeve of device protrudes into the air inlet of end cover body, blind between the air inlet in end cover body and dry gas seals hole
Connecting hole is processed in area.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610967003.1A CN106545523B (en) | 2016-10-28 | 2016-10-28 | Prevent the end cover structure and processing method of vertical subdivision compressor operating gas leakage |
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| CN201610967003.1A CN106545523B (en) | 2016-10-28 | 2016-10-28 | Prevent the end cover structure and processing method of vertical subdivision compressor operating gas leakage |
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| CN106545523A CN106545523A (en) | 2017-03-29 |
| CN106545523B true CN106545523B (en) | 2019-05-31 |
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| CN110026740B (en) * | 2019-04-25 | 2020-12-29 | 沈阳透平机械股份有限公司 | Machining method of end cover with sealing function suitable for centrifugal compressor |
| CN110153650B (en) * | 2019-04-30 | 2020-11-27 | 沈阳透平机械股份有限公司 | Method for processing saddle groove blade seat of large axial flow compressor |
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| JP2002178207A (en) * | 2000-12-14 | 2002-06-25 | Enshu Ltd | Fine hole drilling method, tool holder using for the same method and machining center |
| CN2756872Y (en) * | 2004-12-15 | 2006-02-08 | 沈阳鼓风机(集团)有限公司 | Vertical split tubular centrafugal compressor |
| CN100434217C (en) * | 2005-05-12 | 2008-11-19 | 大连理工大学 | Electric spark processing technical method of group electrode having large quantity micropore and its device |
| CN201068983Y (en) * | 2007-08-01 | 2008-06-04 | 合肥通用机械研究院 | Contact type dry running mechanical sealing |
| CN101776152B (en) * | 2010-03-05 | 2013-08-21 | 北京化工大学 | Outside pressurized type dynamic and static pressure gas lubricating and sealing device |
| JP5231611B2 (en) * | 2010-10-22 | 2013-07-10 | 株式会社神戸製鋼所 | Compressor |
| CN203371141U (en) * | 2013-07-26 | 2014-01-01 | 北京市电加工研究所 | Electric spark deep blind hole machining and guiding device |
| CN204692588U (en) * | 2015-05-25 | 2015-10-07 | 浙江工业大学 | The gas lubrication mechanical seal device that a kind of closing force is adjustable online |
| CN204893120U (en) * | 2015-05-31 | 2015-12-23 | 成都凯天电子股份有限公司 | Rotatory processingequipment of electric spark electrode |
| CN105201872A (en) * | 2015-09-28 | 2015-12-30 | 沈阳斯特机械制造有限公司 | Vertically-dismounted multi-stage centrifugal compressor |
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