CN208431188U - The impeller seals monitoring of structures of centrifugal compressor - Google Patents
The impeller seals monitoring of structures of centrifugal compressor Download PDFInfo
- Publication number
- CN208431188U CN208431188U CN201820857434.7U CN201820857434U CN208431188U CN 208431188 U CN208431188 U CN 208431188U CN 201820857434 U CN201820857434 U CN 201820857434U CN 208431188 U CN208431188 U CN 208431188U
- Authority
- CN
- China
- Prior art keywords
- air inlet
- impeller
- impulse pipeline
- regulating device
- pressure
- 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.)
- Active
Links
Abstract
A kind of impeller seals monitoring of structures of centrifugal compressor, including impulse pipeline and pressure sensor；The air inlet side of impeller corresponds to the outlet side of air inlet regulating device, is axial admission；The circumference setting for going out gas side and corresponding to diffuser of impeller, for radial outlet；Dynamic sealing is formed by sealing element between the air inlet side of impeller and the outlet side of air inlet regulating device；Impulse pipeline is opened in air inlet regulating device or/and diffuser；At the setting of the first end communication seals part of impulse pipeline, second end is connected with pressure sensor, for the atmospheric pressure value in real-time monitoring impulse pipeline, i.e. atmospheric pressure value at sealing element setting.The utility model passes through the aperture near impeller seals part, it designs pressure guiding pipe pass and goes out herein pressure to pressure sensor, the problem of pressure of real-time monitoring impeller air inlet side, overcoming the leakproofness of previous sealing element can not effectively monitor, and simply cost is relatively low for design.
Description
Technical field
The utility model relates to centrifugal refigerating compressors, and in particular to the impeller seals of centrifugal compressor monitor knot
Structure.
Background technique
In centrifugal compressor work, impeller, to by the working medium acting axially into the impeller, is made by high speed rotation
The pressure of working medium improves, then radially flowing out by impeller.In general, having between the impeller and static air inlet regulating device of rotation
Gap needs that the high-pressure working medium at impeller outlet is avoided to flow back at impeller inlet by a sealing element.At impeller inlet
Pressure the performance of compressor is had an important influence, it is therefore desirable to sealing element is reliable as far as possible, once occur pressure leakage
The problem of, it is necessary to it grasps and controls at the first time.
Situations such as absorbing gas belt liquid, surge, blocking, may occur at work for centrifugal compressor, and impeller is hit nothing at this time
Method is maintained at center, therefore the sealing element with impeller is contacted and causes to wear to it, leads to sealing element over time
Leakproofness is deteriorated.The prior art can not grasp pressure value of the centrifugal compressor at runtime at its impeller inlet in real time, work as impeller
Sealing element leakproofness variation when high-pressure working medium being caused to flow back, also can not effectively grasp pressure changing information and notify work people
Member, causes the working efficiency of centrifugal compressor to have a greatly reduced quality, or even bring adverse effect to the service life of compressor.
Therefore, above-mentioned the shortcomings of the prior art how is solved, is become as the class to be researched and solved of the utility model
Topic.
Summary of the invention
The purpose of this utility model is to provide a kind of impeller seals monitoring of structures of centrifugal compressor.
In order to achieve the above objectives, the technical solution adopted in the utility model is:
A kind of impeller seals monitoring of structures of centrifugal compressor corresponds to the dress of air inlet regulating device and impeller in compressor
It is arranged with junction, including impulse pipeline and pressure sensor；
The wheel rotation is assemblied in a diffuser of compressor, and the diffuser is in being assemblied in the air inlet tune in axial direction
The outlet side of regulating device；The air inlet side of the impeller corresponds to the outlet side setting of air inlet regulating device, is axial admission；The leaf
The circumference setting for going out gas side and corresponding to the diffuser of wheel, for radial outlet；The air inlet side of the impeller and the air inlet adjustment
Dynamic sealing is formed by a sealing element between the outlet side of device；
Wherein, the impulse pipeline is opened in the air inlet regulating device or/and the diffuser；The impulse pipeline
First end be connected at the setting of the sealing element, the second end of impulse pipeline is connected with the pressure sensor, the pressure pass
For sensor for the atmospheric pressure value in real-time monitoring impulse pipeline, which is the atmospheric pressure value at the sealing element setting.
Related content in above-mentioned technical proposal is explained as follows:
1. in above scheme, the impeller is driven by motor high speed rotation, at the same to by high speed rotation to by axial direction into
The working medium acting for entering the impeller, improves the pressure of working medium, then radially flowing out to the exhaust channel of diffuser by impeller, and pass through
Compressor is discharged by exhaust pipe.
2. in above scheme, the first end of the impulse pipeline is as pressure acquisition point, when the leakproofness of the sealing element
When variation, the atmospheric pressure value of impeller air inlet side will change, and pressure guiding pipe routing at this time is communicated in air-flow at sealing element setting, therefore
The variation of air pressure will detect via the pressure sensor of the impulse pipeline other end and be sent in real time host computer, carry out to user
It reminds.
3. in above scheme, the first end of the impulse pipeline is opened on the inside of the outlet side of the air inlet regulating device.
When the compressor is normally operated, the pressure of the first end acquisition impeller air inlet side of impulse pipeline, numerical value is basicly stable and is system
Minimum pressure；When the leakproofness of impeller seals part is deteriorated, the air inlet side that leakage does not stop to impeller occurs for high-pressure working medium, by
It shows as adopting because this latter will be acquired pressure change in the first end and pressure sensor airflow connection of impulse pipeline
The pressure collected starts to fluctuate or increase；It designs whereby, it can be determined that whether the leakproofness of impeller seals part is normal.
4. in above scheme, the impulse pipeline includes multiple first ends, each first end is distributed in circumferencial direction
On the inside of the outlet side of the air inlet regulating device；Each first end is communicated with the second end air-flow, to improve monitoring accuracy.
5. in above scheme, the first end of the impulse pipeline can be also opened in the diffuser, the corresponding impeller
It is arranged with the fit-up gap of the air inlet regulating device.When the compressor is normally operated, the first end of impulse pipeline acquires assembly
The pressure in gap, numerical value is basicly stable and is system elevated pressures；When the leakproofness of impeller seals part is deteriorated, high-pressure working medium hair
The air inlet side that raw leakage does not stop to impeller, due to the first end and pressure sensor airflow connection of impulse pipeline, because hereafter
Person will be acquired pressure change, show as collected pressure and start to fluctuate or reduce；It designs whereby, it can be determined that impeller
Whether the leakproofness of sealing element is normal.
The working principle and advantage of the utility model are as follows:
A kind of impeller seals monitoring of structures of centrifugal compressor of the utility model, including impulse pipeline and pressure sensing
Device；The air inlet side of impeller corresponds to the outlet side of air inlet regulating device, is axial admission；The week for going out gas side and corresponding to diffuser of impeller
Portion's setting, for radial outlet；Dynamic sealing is formed by sealing element between the air inlet side of impeller and the outlet side of air inlet regulating device；
Impulse pipeline is opened in air inlet regulating device or/and diffuser；At the setting of the first end communication seals part of impulse pipeline, the
Two ends are connected with pressure sensor, for the atmospheric pressure value in real-time monitoring impulse pipeline, i.e. atmospheric pressure value at sealing element setting.
Compared to existing technologies, the utility model designs pressure guiding pipe pass by the aperture near impeller seals part
Pressure is to pressure sensor herein out, and the pressure of real-time monitoring impeller air inlet side, the leakproofness for overcoming previous sealing element can not
The problem of effectively monitoring, and simply cost is relatively low for design.
Detailed description of the invention
Attached drawing 1 is the top view of the utility model embodiment；
Attached drawing 2 be in Fig. 1 A-A to diagrammatic cross-section；
Attached drawing 3 is the enlarged drawing in Fig. 2 at B；
Attached drawing 4 is the enlarged drawing in Fig. 2 at C.
In the figures above: 1. mobile detection blocks；2. displacement sensor；3. inlet cylinder；4. inner cavity；5. inlet end；6. outlet
End；7. impeller；8. blade；9. piston cylinder；10. attachment base；11. test side；12. inclined-plane；13. attachment base；14. annular assembly
Chamber；15. hydraulic cavities；16. hydraulic action portion；17. chamber；17a.A chamber；17b.B chamber；18. impulse pipeline；19. pressure passes
Sensor；20. diffuser；21. air inlet side；22. going out gas side；23. exhaust channel；24. exhaust pipe；25. sealing element；26. first end；
27. second end.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and embodiments:
Embodiment: referring to shown in attached drawing 1,2, a kind of impeller seals monitoring of structures of centrifugal compressor, i.e., hereinafter
Leakproofness monitoring device, the centrifugal compressor further include air inlet precise control device.
Wherein, as shown in figure 3, the air inlet precise control device is set in an air inlet regulating device of compressor, including
Mobile detection block 1 and displacement sensor 2.
The air inlet regulating device includes the inlet cylinder 3 of an open at both ends, which has an inner cavity 4, axial to cut
Face is rectangle or inverted trapezoidal, which is connected to the opening at both ends, constitutes an air inlet runner；One end of inner cavity is inlet end 5, separately
One end is outlet side 6, and the impeller 7 of the corresponding compressor in the outlet side 6 is arranged；It is set in the inner cavity 4 at the outlet side 6
There are multiple blades 8, each blade 8 is evenly arranged on same sagittal plane, and is rotated and be connected on the side wall of inlet cylinder 3；
The air inflow of impeller 7 is adjusted by the rotation of blade 8；When whole blades 8 are perpendicular to be arranged in air inlet runner, air inlet runner quilt
It closes, the air inflow of impeller 7 is minimum at this time；When whole blades 8 are in air inlet runner setting is parallel to, air inlet runner is opened,
The air inflow of impeller 7 is maximum at this time.
The air inlet regulating device further includes a piston cylinder 9, which is sheathed on the peripheral part of the inlet cylinder 3, is led to
Hydraulic-driven is crossed to be slidably matched in the axial direction with inlet cylinder 3；The shaft of each blade 8 is stretched out outside the side wall of the inlet cylinder 3
Portion, and the shaft of each blade 8 is sequentially connected with the inner sidewall of the piston cylinder 9, constitutes when piston cylinder 9 is in the axial direction with respect to institute
When stating the displacement of inlet cylinder 3, each blade 8 is rotated synchronously, and the mode being specifically sequentially connected is those skilled in the art institute energy
It is enough to grasp, therefore do not repeat.
Wherein, a connecting seat 10 on the relatively described inlet cylinder 3 of institute's displacement sensors 2 is fixed, the mobile detection block 1
It is fixedly arranged on the piston cylinder 9, and a test side 11 of the mobile detection block 1 and institute's displacement sensors 2 is radially
It is corresponding, it constitutes when mobile detection block 1 is displaced in the axial direction with the piston cylinder 9, institute's displacement sensors 2 being capable of real-time detection
The axial position of the mobile detection block 1, and the displacement signal that will test is converted into electric signal and exports into host computer, so as to
User in real time, accurately grasps the displacement data of mobile detection block 1, which is the displacement data of piston cylinder 9, due to
Each blade 8 is sequentially connected with piston cylinder 9, therefore user can grasp whereby the rotation data of blade 8, to judge and control leaf
The aperture of piece 8.
The mobile detection block 1 is a wedge block, which has an inclined-plane 12, and the inclined-plane 12 is axially inclined, and
It is corresponding with the test side 11 of institute displacement sensors 2；Institute's displacement sensors 2 are mechanical pick-up device, and the test side 11 is inspection
Probing needle, the needle contact of the detection probe and against the inclined-plane of the wedge block 12.When piston cylinder 9 is in axial displacement, inspection
Probing needle by by the inclined-plane 12 of wedge block against, and then radially be subjected to displacement, leaf can be grasped by the displacement in real time
The aperture of piece 8.
The mobile detection block 1 is corresponded on the inlet cylinder 3 equipped with a limiting slot (not drawing in figure), the mobile detection
Block 1, which slides axially, to be set in the limiting slot, the equivalent width of the two, and then realizes the positioning of piston cylinder 9 in the circumferential, is kept away
Exempt from piston cylinder 9 and circumferential rotation occurs.
The peripheral part of the inlet cylinder 3 is installed with the attachment base 10, defines to be formed between the attachment base 10 and inlet cylinder 3
One annular assembly cavity 14, the piston cylinder 9 are slideably positioned in the axial direction in the annular assembly cavity 14.
The upper section and lower section of 10 inner wall of attachment base, which are sealed with the lateral wall of the piston cylinder 9, to be cooperated, attachment base 10
A hydraulic cavities 15 are formed between the middle section of inner wall and the lateral wall of piston cylinder 9, the axial stroke of the piston cylinder 9 is hydraulic by this
The axial length of chamber 15 is limited.The outer wall of the piston cylinder 9, which is radially outer, is convexly equipped with a hydraulic action portion 16, the liquid
Pressure service portion 16 protrudes into the hydraulic cavities 15, and hydraulic cavities 15 is divided into the chamber 17 of two sealings in the axial direction, and described in two
Chamber 17 is provided with an oil filler point and an oil leak hole (not drawing in figure) respectively.
The default initial position of the air inlet regulating device is the fully closed state of blade 8, i.e., hydraulic action portion 16 is in axial direction
On be adjacent to one end of hydraulic cavities 15.The hydraulic action portion 16 of piston cylinder 9 divides hydraulic cavities 15 for A chamber 17a and B chamber 17b.
Such as: when compressor needs increment of load, four-way valve is connected, high pressure oil enters from the oil filler point of A chamber 17a, B chamber
The hydraulic oil of 17b is discharged from the oil leak hole of B chamber 17b, and piston cylinder 9 is mobile to 5 direction of inlet end at this time, mobile detection block 1 with
Mobile with 5 direction of inlet end in the same direction of piston cylinder 9 one, displacement sensor 2 detects the change in location of mobile detection block 1, will be displaced
Signal is converted into electric signal output, read at this time voltage (electric current) value to determine the aperture of blade 8；
When compressor needs off-load, four-way valve is connected, high pressure oil enters from the oil filler point of B chamber 17b, A chamber 17a's
Hydraulic oil is discharged from the oil leak hole of A chamber 17a, and piston cylinder 9 is mobile to 6 direction of outlet side (i.e. 7 direction of impeller) at this time, mobile inspection
Surveying block 1 follows 6 direction of outlet side in the same direction of piston cylinder 9 one mobile, and displacement sensor 2 detects the change in location of mobile detection block 1,
Convert electric signal output for displacement signal, read at this time voltage (electric current) value to determine the aperture of blade 8.
Wherein, as shown in figure 4, the leakproofness monitoring device corresponds to the air inlet regulating device and the impeller 7
It is fitted to each other place's setting, including impulse pipeline 18 and pressure sensor 19.
For 7 rolling assembling of impeller in a diffuser 20 of compressor, the diffuser 20 is described in being assemblied in axial direction
Air inlet regulating device outlet side 6；The outlet side 6 of the corresponding inlet cylinder 3 of the air inlet side 21 of the impeller 7 is arranged, for it is axial into
Gas；The circumference setting for going out the corresponding diffuser 20 in gas side 22 of impeller 7, for radial outlet；Height is driven by motor in the impeller 7
Speed rotation, while improve the pressure of working medium, then by leaf to by the working medium acting axially into the impeller 7 by high speed rotation
Wheel 7 is radially flowed out to the exhaust channel 23 of diffuser 20, and compressor is discharged via exhaust pipe 24.The air inlet of the impeller 7
Dynamic sealing is formed by a sealing element 25 between side 21 and the outlet side of the inlet cylinder 36.
Wherein, the impulse pipeline 18 is opened in the air inlet regulating device；The first end 26 of the impulse pipeline 18
It is connected at the setting of the sealing element 25, the second end 27 of impulse pipeline 18 is connected with the pressure sensor 19, which passes
For sensor 19 for the atmospheric pressure value in real-time monitoring impulse pipeline 18, which is the air pressure at 25 setting of sealing element
Value, that is, the atmospheric pressure value of 7 air inlet side 21 of the impeller.
The first end 26 of the impulse pipeline 18 is used as pressure acquisition point, when the leakproofness of the sealing element 25 is deteriorated,
The atmospheric pressure value of 7 air inlet side 21 of impeller will change, and impulse pipeline 18 is with air-flow at 25 setting of sealing element due to communicating at this time,
The variation of air pressure will detect via the pressure sensor 19 of 18 other end of impulse pipeline and be sent to host computer in real time, to user
It is reminded.
Wherein, the first end 26 of the impulse pipeline 18 is opened in 6 inside of outlet side of the air inlet regulating device.Work as pressure
When contracting machine operates normally, the first end 26 of impulse pipeline 18 acquires the pressure of 6 air inlet side 21 of impeller, and numerical value is basicly stable and to be
System minimum pressure；When the leakproofness of impeller 7 sealing element 25 is deteriorated, high-pressure working medium occur leakage do not stop to impeller 7 into
Gas side 21, due to impulse pipeline 18 first end 26 and 19 airflow connection of pressure sensor, because this latter will to pressure change into
Row acquisition shows as collected pressure and starts to fluctuate or increase；It designs whereby, it can be determined that the sealing of 7 sealing element 25 of impeller
Whether property is normal.
Compared to existing technologies, the utility model designs pressure guiding pipe pass by the aperture near impeller seals part
Pressure is to pressure sensor herein out, and the pressure of real-time monitoring impeller air inlet side, the leakproofness for overcoming previous sealing element can not
The problem of effectively monitoring, and simply cost is relatively low for design.
The above embodiments are only for explaining the technical ideas and features of the present invention, and its object is to allow be familiar with technique
Personage can understand the content of the utility model and implement accordingly, do not limit the protection scope of the present invention.
All equivalent change or modifications according to made by the spirit of the present invention essence, should all cover the protection scope of the utility model it
It is interior.
Claims (4)
1. a kind of impeller seals monitoring of structures of centrifugal compressor, it is characterised in that:
The place of being fitted to each other of air inlet regulating device and impeller setting in corresponding compressor, including impulse pipeline and pressure sensing
Device；
The wheel rotation is assemblied in a diffuser of compressor, and the diffuser is in being assemblied in air inlet adjustment dress in axial direction
The outlet side set；The air inlet side of the impeller corresponds to the outlet side setting of air inlet regulating device, is axial admission；The impeller
Gas side corresponds to the circumference setting of the diffuser out, for radial outlet；The air inlet side of the impeller and the air inlet regulating device
Outlet side between by a sealing element formed dynamic sealing；
Wherein, the impulse pipeline is opened in the air inlet regulating device or/and the diffuser；The of the impulse pipeline
One end is connected at the setting of the sealing element, and the second end of impulse pipeline is connected with the pressure sensor, the pressure sensor
For the atmospheric pressure value in real-time monitoring impulse pipeline, which is the atmospheric pressure value at the sealing element setting.
2. monitoring of structures according to claim 1, it is characterised in that: the first end of the impulse pipeline be opened in it is described into
On the inside of the outlet side of gas control device.
3. monitoring of structures according to claim 2, it is characterised in that: the impulse pipeline includes multiple first ends, each institute
First end is stated on the inside of the outlet side that circumferencial direction is distributed in the air inlet regulating device；Each first end with the second end gas
Stream communicates.
4. monitoring of structures according to claim 1, it is characterised in that: the first end of the impulse pipeline is opened in the expansion
In depressor, the fit-up gap of the corresponding impeller and the air inlet regulating device is arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820857434.7U CN208431188U (en) | 2018-06-05 | 2018-06-05 | The impeller seals monitoring of structures of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820857434.7U CN208431188U (en) | 2018-06-05 | 2018-06-05 | The impeller seals monitoring of structures of centrifugal compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208431188U true CN208431188U (en) | 2019-01-25 |
Family
ID=65100726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820857434.7U Active CN208431188U (en) | 2018-06-05 | 2018-06-05 | The impeller seals monitoring of structures of centrifugal compressor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208431188U (en) |
-
2018
- 2018-06-05 CN CN201820857434.7U patent/CN208431188U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101326343B (en) | Bearing health monitor | |
| CN108691650B (en) | Leak detecting device | |
| US10167971B2 (en) | Aspirated relief valve for a turbocharging system | |
| US7069183B2 (en) | Early fault detection in pump valves | |
| CN102840159B (en) | Negative pressure adjusting device for inlet of compressor with variable diameter | |
| CN104359679B (en) | Method for measuring micropore flow coefficient under rotating condition | |
| ATE366593T1 (en) | PERISTALTIC PUMP CONTROL METHOD | |
| JP4951006B2 (en) | Exhaust turbocharger for internal combustion engines | |
| CN208431206U (en) | The air inlet blade opening of centrifugal compressor accurately controls and feedback device | |
| CN208431188U (en) | The impeller seals monitoring of structures of centrifugal compressor | |
| CN103867319B (en) | Method and apparatus for determining the failure in combustion air input system | |
| CN208503086U (en) | The air inlet of centrifugal compressor accurately controls and leakproofness monitoring system | |
| JP2015511288A (en) | Preventing pump surging in compressors | |
| CN107655627A (en) | A kind of sinusoidal pressure generating means | |
| CN103597213B (en) | The method of supersonic compressor rotor and compressed fluid | |
| CN103429850B (en) | Turbine engine stage and turbogenerator | |
| CN108757537A (en) | The air inlet of centrifugal compressor accurately controls and leakproofness monitoring system | |
| CN202768450U (en) | Gas compressor inlet negative pressure adjusting device with variable diameters | |
| CN203309215U (en) | Novel plate-type check valve | |
| CN110067777B (en) | Flow-increasing water pump | |
| CN208268071U (en) | A kind of compression chamber dynamic pressure measurement device of Rotary Vane Motor Vehicle Air-Conditioning Compressor | |
| CN209084031U (en) | A kind of air inlet adjustable valve and pneumatic-to-current converter | |
| CN205163061U (en) | Air feeder and sphygmomanometer of sphygmomanometer | |
| CN219178781U (en) | Performance testing device for oil-gas separator assembly | |
| CN109084985A (en) | A kind of scavenging flowing test system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |