CN204532943U - Pressure balance structure for oil tank and air suction port of centrifugal compressor - Google Patents
Pressure balance structure for oil tank and air suction port of centrifugal compressor Download PDFInfo
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- CN204532943U CN204532943U CN201420856747.2U CN201420856747U CN204532943U CN 204532943 U CN204532943 U CN 204532943U CN 201420856747 U CN201420856747 U CN 201420856747U CN 204532943 U CN204532943 U CN 204532943U
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- Prior art keywords
- intakeport
- section
- flange
- orifice unit
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- 239000002828 fuel tank Substances 0.000 claims description 29
- 239000003921 oil Substances 0.000 abstract description 33
- 239000003507 refrigerant Substances 0.000 abstract description 10
- 230000006698 induction Effects 0.000 abstract 7
- 239000010725 compressor oil Substances 0.000 abstract 2
- 239000000314 lubricant Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a pressure balance structure for centrifugal compressor oil tank and induction port relates to centrifugal compressor technical field, easily causes the refrigerant to reveal, the complicated scheduling problem design of structure for solving current pressure balance structure. This a pressure balance structure for centrifugal compressor oil tank and induction port includes the induction port subassembly, oil tank subassembly and the balanced pipe subassembly of intercommunication induction port subassembly and oil tank subassembly, the induction port flange of induction port subassembly is connected with the first flange of balanced pipe subassembly, the oil tank flange of oil tank subassembly is connected with the second flange of balanced pipe subassembly, be provided with first seal gasket between induction port flange and the first flange, be provided with second seal gasket between oil tank flange and the second flange, the flange hole of oil tank flange is the orifice. The utility model provides a pressure balance structure has saved the throttle plate structure, has simplified the structure, has reduced the quantity of sealed face simultaneously, has reduced the risk that the refrigerant was revealed.
Description
Technical field
The utility model relates to centrifugal compressor technical field, particularly relates to a kind of pressure balancing structure for centrifugal compressed sump and intakeport.
Background technique
Centrifugal compressor is velocity profile compressor, drives air work, thus improve the pressure of gas by the impeller of High Rotation Speed.And the main shaft realizing High Rotation Speed uses sliding bearing to support usually, in main shaft high-speed rotation, the lubricant oil between main shaft and sliding bearing forms oil film and holds up main shaft, avoids main shaft and bearing to form dry friction.Lubricant oil also will cool bearing simultaneously, the frictional heat of band bearing running and main shaft.In the oil circulation system of centrifugal compressor inside, have some high pressure refrigerant gas and flow in fuel tank, cause tank pressure more and more higher, and refrigerant can be dissolved in lubricant oil usually, and pressure is larger, refrigerant meltage is larger, and this can cause the oil viscosity of lubricant oil to reduce.Lubricating oil viscosity is lower, and sliding bearing bearing capacity declines, thus affects the stability that main shaft runs up.Therefore, the pressure balance in fuel tank must be ensured.
In order to ensure the pressure balance in compressor sump, usual at present fuel tank to be communicated with by balance tube with intakeport, between balance tube with intakeport, to be connected the pressure that an independent orifice plate is used for trim tank and intakeport.Like this when connecting independent orifice plate, needing two-layer sealing configuration, both having added secondary refrigerant leakage point, turn increased cost.On the other hand, current orifice plate mostly is simple circular hole, and before and after orifice plate, due to the sudden change of cross section of fluid channel, gas easily produces whirlpool, causes noise to increase and energy loss.
For the problems referred to above, need a kind of new pressure balancing structure of proposition badly and cause the problems such as energy loss, noise are large with easily cause secondary refrigerant leakage, increase cost, the flowing instability of gas before and after restricting orifice that solve the existence of existing pressure balancing structure.
Model utility content
An object of the present utility model be propose a kind ofly effectively can to reduce that secondary refrigerant leakage risk, structure are simple, cost is low for the pressure balancing structure of centrifugal compressed sump and intakeport.
Another object of the present utility model is the pressure balancing structure proposing that a kind of air current flow is stablized, energy loss is little, noise is low for centrifuge fuel tank and intakeport.
For reaching this object, the utility model by the following technical solutions:
A kind of pressure balancing structure for centrifugal compressed sump and intakeport, comprise intakeport assembly, the balance tube assembly of fuel tank assembly and connection intakeport assembly and fuel tank assembly, the intakeport adpting flange of described intakeport assembly is connected with the first adpting flange of described balance tube assembly, the oil tank flange of described fuel tank assembly is connected with the second adpting flange of described balance tube assembly, the first gasket seal is provided with between described intakeport adpting flange and described first adpting flange, the second gasket seal is provided with between described oil tank flange and described second adpting flange, the flange hole of described oil tank flange is throttle orifice.
Preferably, described throttle orifice is the through hole that shape of cross section is all identical everywhere, and its cross section is circular or polygonal, and the cross-section area of described throttle orifice is less than the cross-section area of the pipeline of described balance tube assembly.
Preferably, described throttle orifice comprises first segment discharge orifice unit and second section discharge orifice unit from top to bottom, the cross-section area of described first segment discharge orifice unit from top to bottom reduces gradually, described second section discharge orifice unit is the through hole that shape of cross section is all identical everywhere, and the cross section of described second section discharge orifice unit is corresponding with the shape of cross section at the minimum place of area on described first segment discharge orifice unit.
Preferably, the maximum cross-section area of described first segment discharge orifice unit is less than or equal to the conduit cross-sectional area of described balance tube assembly.
Preferably, described throttle orifice also comprises the 3rd throttle orifice unit be arranged at below described second section discharge orifice unit, the cross-section area of described 3rd throttle orifice unit from top to bottom increases gradually, and on described 3rd throttle orifice unit, the cross section at the minimum place of area is corresponding with the shape of cross section of described second section discharge orifice unit.
Preferably, described first segment discharge orifice unit and described 3rd throttle orifice unit are cone shape hole.
Preferably, described first segment discharge orifice unit and described 3rd throttle orifice unit are round taper hole.
Preferably, the described side wall surface of first segment discharge orifice unit and the angle α of vertical direction are 10 °-40 °; The described side wall surface of the 3rd throttle orifice unit and the angle β of vertical direction are 10 °-40 °.
Preferably, the wall of described first segment discharge orifice unit and described 3rd throttle orifice unit is arc surface.
Preferably, the circular arc place radius of a circle on the longitudinal section of described arc surface is 3mm-25mm.
The beneficial effects of the utility model are:
The pressure balancing structure for centrifugal compressed sump and intakeport that the utility model provides, directly Flange joint is passed through between its intakeport assembly and balance tube assembly, sealed by gasket seal between flange, also directly Flange joint is passed through between fuel tank assembly and balance tube assembly, sealed by gasket seal between flange, the flange hole of oil tank flange is set to throttle orifice, eliminate Rectifier plate structure, simplify the structure, reduce cost, decrease the quantity of sealing surface simultaneously, reduce the risk of secondary refrigerant leakage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the pressure balancing structure for centrifugal compressed sump and intakeport that the utility model embodiment one provides;
Fig. 2 is the partial enlarged drawing at A place in Fig. 1;
Fig. 3 is the partial enlarged drawing at B place in Fig. 1;
Fig. 4 is the structural representation of the throttle orifice that the utility model embodiment one provides;
Fig. 5 is the structural representation of the throttle orifice that the utility model embodiment two provides;
Fig. 6 is the structural representation of the throttle orifice that the utility model embodiment three provides;
Fig. 7 is the structural representation of the throttle orifice that the utility model embodiment four provides.
In figure, 1, intakeport assembly; 11, intakeport; 12, intakeport connecting tube; 13, intakeport adpting flange; 2, fuel tank assembly; 21, fuel tank; 22, oil tank flange; 23, throttle orifice; 231, first segment discharge orifice unit; 232, second section discharge orifice unit; 233, the 3rd throttle orifice unit; 3, balance tube assembly; 31, balance tube; 32, the first adpting flange; 33, the second adpting flange; 4, the first gasket seal; 5, the second gasket seal.
Embodiment
The technical solution of the utility model is further illustrated by embodiment below in conjunction with accompanying drawing.
Embodiment one:
Present embodiments provide a kind of pressure balancing structure for centrifugal compressed sump and intakeport, as shown in Figure 1 to Figure 3, it balance tube assembly 3 comprising intakeport assembly 1, fuel tank assembly 2 and be communicated with intakeport assembly 1 and fuel tank assembly 2.Intakeport assembly 1 comprises the intakeport 11 of compressor, intakeport connecting tube 12 and intakeport adpting flange 13, and one end of intakeport connecting tube 12 is connected with intakeport 11, and another end is connected with intakeport adpting flange 13.Fuel tank assembly 2 comprises fuel tank 21 and is arranged at the oil tank flange 22 in fuel tank 21 outlet port.Balance tube assembly 3 comprises balance tube 31, and one end of balance tube 31 is provided with the first adpting flange 32, and the other end is provided with the second adpting flange 33.First adpting flange 32 of balance tube assembly 3 is connected with intakeport adpting flange 13, and the second adpting flange 33 is connected with oil tank flange 22, thus makes balance tube 31 be communicated with intakeport 11 and the fuel tank 21 of compressor, ensures pressure equilibrium of forces.
Sealed by the first gasket seal 4 between intakeport adpting flange 13 and the first adpting flange 32, sealed by the second gasket seal 5 between oil tank flange 22 and the second adpting flange 33.The flange hole of oil tank flange 22 is throttle orifice 23, is reached the effect of throttling, eliminates Rectifier plate structure, simplify the structure, reduce cost, decrease the quantity of sealing surface simultaneously, reduce the risk of secondary refrigerant leakage by throttle orifice 23.
The structure of throttle orifice 23 as shown in Figure 4, is the through hole that shape of cross section is everywhere all identical, and its cross section can be circular or polygonal, and the cross-section area of throttle orifice 23 is less than the cross-section area of the pipeline of balance tube assembly 3, thus reaches the effect of throttling.The concrete size of throttle orifice 23 need determine according to the pressure difference of the flow of air-flow and fuel tank 21 and intakeport 11.The height of throttle orifice 23 is preferably 5mm-50mm, more preferably 10mm-30mm.
Embodiment two:
Present embodiments provide a kind of pressure balancing structure for centrifugal compressed sump and intakeport, its structure is substantially identical with embodiment one, comprises intakeport assembly, fuel tank assembly and is communicated with the balance tube assembly of intakeport assembly and fuel tank assembly.The intakeport adpting flange of intakeport assembly is connected with the first adpting flange of balance tube assembly, the oil tank flange of fuel tank assembly is connected with the second adpting flange of balance tube assembly, the first gasket seal is provided with between intakeport adpting flange and the first adpting flange, be provided with the second gasket seal between oil tank flange and the second adpting flange, the flange hole of oil tank flange is throttle orifice.
Difference is, the throttle orifice of the present embodiment as shown in Figure 5, comprises first segment discharge orifice unit 231 and second section discharge orifice unit 232 from top to bottom.The round taper hole that first segment discharge orifice unit 231 from top to bottom reduces gradually for aperture, second section discharge orifice unit 232 is cylindrical hole.The aperture of cylindrical hole is equal with the minimum-value aperture of round taper hole, and the maximum diameter of hole of round taper hole equals or is slightly less than the internal diameter of the pipeline of balance tube assembly.
By first segment discharge orifice unit 231 being set to the round taper hole that aperture reduces gradually from top to bottom, the stability being flowed into the air-flow in throttle orifice by balance tube assembly can be improved, reducing the loss of energy, reduce noise.
The side wall surface of first segment discharge orifice unit 231 and the angle α of vertical direction should not be excessive, and angle is easy too greatly produces whirlpool greatly because cross section of fluid channel changes, and preferably, angle α is 0 °-60 °, and further preferably, angle α is 10 °-40 °.
The longer the better, preferably within 30mm under the prerequisite ensureing suitable oil tank flange thickness for the length of second section discharge orifice unit 232.
Wherein, first segment discharge orifice unit 231 is not limited to and is set to conical bore, as long as cross-section area from top to bottom reduces gradually, play the effect of buffer gas flow, as other cone shape holes such as pyramid shape hole etc., now, second section discharge orifice unit 232 is set to sectional shape is all identical through hole everywhere and the cross section of second section discharge orifice unit 232 is corresponding with the shape of cross section at the minimum place of area on first segment discharge orifice unit 231 accordingly.
Embodiment three:
Present embodiments provide a kind of pressure balancing structure for centrifugal compressed sump and intakeport, its structure is substantially identical with embodiment two, comprises intakeport assembly, fuel tank assembly and is communicated with the balance tube assembly of intakeport assembly and fuel tank assembly.The intakeport adpting flange of intakeport assembly is connected with the first adpting flange of balance tube assembly, the oil tank flange of fuel tank assembly is connected with the second adpting flange of balance tube assembly, the first gasket seal is provided with between intakeport adpting flange and the first adpting flange, be provided with the second gasket seal between oil tank flange and the second adpting flange, the flange hole of oil tank flange is throttle orifice.Throttle orifice comprises first segment discharge orifice unit and second section discharge orifice unit from top to bottom.
Difference is, the throttle orifice of the present embodiment as shown in Figure 6, also comprise the 3rd throttle orifice unit 233 be arranged at below second section discharge orifice unit 232, the round taper hole that 3rd throttle orifice unit 233 from top to bottom increases gradually for aperture, the minimum-value aperture of round taper hole is equal with the aperture of second section discharge orifice unit 232.
The side wall surface of the 3rd throttle orifice unit 233 and the angle β preferable range of vertical direction are 10 °-40 °, more preferably equal with the angle α of vertical direction with the side wall surface of first segment discharge orifice unit 231.
On the basis ensureing angle α and angle β, the longer the better for the length of second section discharge orifice unit 232, considers thickness and the Cost Problems of oil tank flange, and the length of second section discharge orifice unit 232 is preferably within 15mm.
3rd throttle orifice unit 233 is not limited to and is set to conical bore, if cross-section area from top to bottom gradually increase and the cross section at the minimum place of its area is corresponding with the shape of cross section of second section discharge orifice unit 232.
Embodiment four:
Present embodiments provide a kind of pressure balancing structure for centrifugal compressed sump and intakeport, its structure is substantially identical with embodiment three, comprises intakeport assembly, fuel tank assembly and is communicated with the balance tube assembly of intakeport assembly and fuel tank assembly.The intakeport adpting flange of intakeport assembly is connected with the first adpting flange of balance tube assembly, the oil tank flange of fuel tank assembly is connected with the second adpting flange of balance tube assembly, the first gasket seal is provided with between intakeport adpting flange and the first adpting flange, be provided with the second gasket seal between oil tank flange and the second adpting flange, the flange hole of oil tank flange is throttle orifice.Throttle orifice comprises first segment discharge orifice unit, second section discharge orifice unit and the 3rd throttle orifice unit from top to bottom.
Difference is, the throttle orifice of the present embodiment as shown in Figure 7, the wall of its first segment discharge orifice unit 231 and the 3rd throttle orifice unit 233 is arc surface, circular arc place radius of a circle RG on the longitudinal section of first segment discharge orifice unit 231 arc surface is preferably 3mm-25mm, circular arc place radius of a circle RH on the longitudinal section of the 3rd throttle orifice unit 233 arc surface is preferably 3mm-25mm, preferred further, two circular arc place radius of a circles are equal.
Below know-why of the present utility model is described in conjunction with specific embodiments.These describe just in order to explain principle of the present utility model, and can not be interpreted as the restriction to the utility model protection domain by any way.Based on explanation herein, those skilled in the art does not need to pay performing creative labour can associate other embodiment of the present utility model, and these modes all will fall within protection domain of the present utility model.
Claims (10)
1. the pressure balancing structure for centrifugal compressed sump and intakeport, comprise intakeport assembly (1), the balance tube assembly (3) of fuel tank assembly (2) and connection intakeport assembly (1) and fuel tank assembly (2), the intakeport adpting flange (13) of described intakeport assembly (1) is connected with first adpting flange (32) of described balance tube assembly (3), the oil tank flange (22) of described fuel tank assembly (2) is connected with second adpting flange (33) of described balance tube assembly (3), it is characterized in that: between described intakeport adpting flange (13) and described first adpting flange (32), be provided with the first gasket seal (4), the second gasket seal (5) is provided with between described oil tank flange (22) and described second adpting flange (33), the flange hole of described oil tank flange (22) is throttle orifice (23).
2. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 1, it is characterized in that: described throttle orifice (23) is the through hole that shape of cross section is all identical everywhere, its cross section is circular or polygonal, and the cross-section area of described throttle orifice (23) is less than the cross-section area of the pipeline of described balance tube assembly (3).
3. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 1, it is characterized in that: described throttle orifice (23) comprises first segment discharge orifice unit (231) and second section discharge orifice unit (232) from top to bottom, the cross-section area of described first segment discharge orifice unit (231) from top to bottom reduces gradually, described second section discharge orifice unit (232) is the through hole that shape of cross section is all identical everywhere, the cross section of described second section discharge orifice unit (232) is corresponding with the shape of cross section at the upper minimum place of area of described first segment discharge orifice unit (231).
4. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 3, is characterized in that: the maximum cross-section area of described first segment discharge orifice unit (231) is less than or equal to the conduit cross-sectional area of described balance tube assembly (3).
5. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 3, it is characterized in that: described throttle orifice (23) also comprises the 3rd throttle orifice unit (233) being arranged at described second section discharge orifice unit (232) below, the cross-section area of described 3rd throttle orifice unit (233) from top to bottom increases gradually, and the cross section at the upper minimum place of area of described 3rd throttle orifice unit (233) is corresponding with the shape of cross section of described second section discharge orifice unit (232).
6. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 5, is characterized in that: described first segment discharge orifice unit (231) and described 3rd throttle orifice unit (233) are cone shape hole.
7. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 5, is characterized in that: described first segment discharge orifice unit (231) and described 3rd throttle orifice unit (233) are round taper hole.
8. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 7, is characterized in that: the described side wall surface of first segment discharge orifice unit (231) and the angle α of vertical direction are 10 °-40 °; The described side wall surface of the 3rd throttle orifice unit (233) and the angle β of vertical direction are 10 °-40 °.
9. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 5, is characterized in that: the wall of described first segment discharge orifice unit (231) and described 3rd throttle orifice unit (233) is arc surface.
10. a kind of pressure balancing structure for centrifugal compressed sump and intakeport according to claim 9, is characterized in that: the circular arc place radius of a circle on the longitudinal section of described arc surface is 3mm-25mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856747.2U CN204532943U (en) | 2014-12-26 | 2014-12-26 | Pressure balance structure for oil tank and air suction port of centrifugal compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420856747.2U CN204532943U (en) | 2014-12-26 | 2014-12-26 | Pressure balance structure for oil tank and air suction port of centrifugal compressor |
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| Publication Number | Publication Date |
|---|---|
| CN204532943U true CN204532943U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420856747.2U Expired - Fee Related CN204532943U (en) | 2014-12-26 | 2014-12-26 | Pressure balance structure for oil tank and air suction port of centrifugal compressor |
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| CN (1) | CN204532943U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564784A (en) * | 2014-12-26 | 2015-04-29 | 珠海格力电器股份有限公司 | Pressure balance structure for oil tank and air suction port of centrifugal compressor |
-
2014
- 2014-12-26 CN CN201420856747.2U patent/CN204532943U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104564784A (en) * | 2014-12-26 | 2015-04-29 | 珠海格力电器股份有限公司 | Pressure balance structure for oil tank and air suction port of centrifugal compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150805 Termination date: 20151226 |
|
| EXPY | Termination of patent right or utility model |