CN108317764B - A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube - Google Patents
A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube Download PDFInfo
- Publication number
- CN108317764B CN108317764B CN201711473998.7A CN201711473998A CN108317764B CN 108317764 B CN108317764 B CN 108317764B CN 201711473998 A CN201711473998 A CN 201711473998A CN 108317764 B CN108317764 B CN 108317764B
- Authority
- CN
- China
- Prior art keywords
- bellows
- vascular
- inertia tube
- straight
- tube
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B9/00—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point
- F25B9/14—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle
- F25B9/145—Compression machines, plants or systems, in which the refrigerant is air or other gas of low boiling point characterised by the cycle used, e.g. Stirling cycle pulse-tube cycle
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25B—REFRIGERATION MACHINES, PLANTS OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS
- F25B2309/00—Gas cycle refrigeration machines
- F25B2309/14—Compression machines, plants or systems characterised by the cycle used
- F25B2309/1413—Pulse-tube cycles characterised by performance, geometry or theory
Abstract
The invention discloses a kind of vascular refrigerators equipped with adjustable bellows formula inertia tube, including compressor, grade aftercooler, regenerator, vascular cold end heat exchanger, vascular, vascular hot-side heat exchanger and the phase modulating mechanism being sequentially communicated, phase modulating mechanism includes the bellows-type inertia tube being connected to vascular hot-side heat exchanger, and the air reservoir being connected to the bellows-type inertia tube other end, bellows-type inertia tube is a bellows for having regulating device, and the length and internal diameter of bellows-type inertia tube are adjusted by regulating device.The vascular refrigerator under different operating conditions can be flexibly matched with using the present invention, there is phase modulation adaptability not available for conventional inertia pipe, and since bellows has outstanding flexible potentiality, the adaptation range of phase modulation is also very wide.
Description
Technical field
The invention belongs to Cryo Refrigerator field, in particular to a kind of pulse tube refrigeration equipped with adjustable bellows formula inertia tube
Machine.
Background technique
In modern science and technology, many instrument and equipments such as superconducting transformer, cryomotor, surpasses superconducting generator
The operation of cable, cryogenic condensation vacuum pump requires Cryo Refrigerator to provide cooling condition.Vascular refrigerator is at low temperature
There is no any moving component, structure is simple, and it is reliable for operation, it is a kind of common Cryo Refrigerator.
Basic model vascular refrigerator is to be invented in the 1960s by Gifford and Longsworth.Its phase modulation shape
Formula has Hole and air reservoir type, bidirection air intake type, inertia cast, active air reservoir type etc..Wherein inertia tube can be adjusted in a big way
Phase, is applicable not only to high-power refrigeration machine, is also able to satisfy the demand of small refrigeration systems, freezes particularly suitable for high-frequency vascular
Machine.Compared to dual-way air-intake vascular refrigeator, inertia cast vascular refrigerator does not have refrigeration performance caused by direct current phenomenon not
Stablize, while phase modulation performance is better than orifice PTR, structure is also simpler than active air reservoir type vascular refrigerator.Cause
This, inertia tube is a kind of extraordinary phase modulation structure for high-frequency vascular refrigerator.
The characteristic of resistance in circuit, inductance and capacitor can be used to indicate in mobility status of the gas in inertia tube.
Flow resistance is equivalent to the resistance in circuit, and the inertia situation of working medium can be indicated with induction reactance, and the internal volume of inertia tube generates
Effect be then capacitive reactance.According to electricity theory, the impedance of available inertia tube phase modulation are as follows:
Wherein,
J is imaginary symbols in formula；ω is angular frequency；R, L is the flow resistance and influenza of inertia tube；C is the internal volume of inertia tube
The fluid capacitance of generation；CrIt is the fluid capacitance of air reservoir；frIt is Darcy friction factor；It is mass flowrate；L is inertia length of tube；ρ is gas
Density under body average pressure；D is inertia bore；γ is gas adiabatic exponent；R is gas constant；T is gas temperature；Vr
For air reservoir volume.
It can derive the phase difference between pressure wave and quality stream are as follows:
Traditional inertia tube is the pipe structure of regular length and internal diameter, cannot be according to the phase angle demand of system come transform length
And internal diameter, phase modulation angle can not be adjusted in the case where the operating parameters such as input work, pressure amplitude, frequency change.In addition, passing
The inertia tube of system has secured its bending angle during fabrication, prevent its from well according to vascular refrigerator hot end position and
It is installed air reservoir position.
Summary of the invention
The present invention provides a kind of vascular refrigerators equipped with adjustable bellows formula inertia tube, and phase modulation is very flexible, phase modulation
Range is big, can satisfy the phase modulation angle demand under vascular refrigerator difference operating condition.
A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube, including be sequentially communicated compressor, after grade it is cooling
Device, regenerator, vascular cold end heat exchanger, vascular, vascular hot-side heat exchanger and phase modulating mechanism, the phase modulating mechanism include and arteries and veins
The bellows-type inertia tube of pipe hot end heat exchanger connection, and the air reservoir being connected to the bellows-type inertia tube other end, it is described
Bellows-type inertia tube be one have regulating device bellows, by regulating device adjust bellows-type inertia tube length and
Internal diameter.
Length and the internal diameter of bellows-type inertia tube are adjusted by regulating device to adjust its phase modulation angle and setting angle.
Since the phase modulation ability of inertia tube depends on the length and internal diameter of inertia tube itself, so by changing the length of inertia tube and interior
Diameter can change the phase modulation angle of inertia tubeBut letter between the phase modulation ability of inertia tube and its length and its internal diameter it is not
Single dull linear relationship.For different refrigerator operation conditions, inertia length of tube and internal diameter cause under identical variation
Phase modulation angle change situation be different.So the bellows-type inertia tube changed using flexible, can be flexibly matched with not
With the vascular refrigerator under operating condition, there is phase modulation adaptability not available for the non-adjustable inertia tube of tradition, and due to bellows
With outstanding flexible potentiality, the adaptation range of phase modulation is also very wide.
The bellows is high pressure resistant, length contractible trasformation, and flexible metal bellows.
Bellows-type inertia tube can rely on its own good flexibility, be bent within the scope of larger angle, can be with
Different installation sites is adapted to, it is easy for installation.
The waveform of the bellows can be Ω type, U-shaped, S type or c-type etc..
The bellows determines that bending angle, the global shape of bellows can be U according to the position of air reservoir and vascular
Type or linear type.
The regulating device includes the straight-bar being mounted between several flanges and flange of bellows different location
And screw rod；
The flange of the straight-bar and bellows bending section is fixed；The flange of the screw rod and bellows straightway is solid
It is fixed.
Several apertures are equidistantly spaced from the straight-bar, by being fixed on straight-bar with the matched bolt of hole diameter
On flange, straight-bar has biggish intensity.
By adjusting the straight-bar length between bending section flange, blending bolt insertion aperture is fixed, adjustable bending section
Angle and length.
The length of the adjustable and fixed bellows bending portion of straight-bar, and guarantee that bending section was run in vascular refrigerator
The stability of journey.
The screw rod is fixed on flange by nut, and screw rod has biggish intensity.It is adjusted by screw on nut
Spiro rod length between straightway flange, the length of adjustable straightway bellows.
Screw rod can guarantee that it is long in vascular refrigerator operational process after the length for regulating bellows-type inertia tube
The fixation of degree, while it being made not generate shaking when gas Oscillating flow in pipe, bellows is compensated for compared to common inertia tube
The insufficient disadvantage of rigidity while so that it is kept outstanding flexibility, has good stability.
Straight-bar length on the inside of bellows bending section is less than the straight-bar length close to outside, and spiro rod length is all equal.
Straight-bar or the quantity of screw rod are installed between two adjacent flanges and the position of installation can be according to actual needs
It determines.
Preferably, the quantity that straight-bar or screw rod are arranged between two neighboring flange is four, and straight-bar can be disposed at equal intervals
Around bellows bending section.
In general, phase modulation is carried out by increasing or shortening the length of inertia tube, needed using more different lengths
Inertia tube, higher cost, and more wasting.In addition, even if based on designed by theoretical calculation come out inertia tube, as
The deviation of actual conditions causes a deviation from original design phase modulation requirement.And a bellows-type inertia tube can be by flexible
With different length, cost can be saved well.Simultaneously actual conditions and theoretical calculation can be corrected with flexible modulation length
Deviation, meet the requirements.
Compared with existing vascular refrigerator uses inertia tube, the beneficial effects of the present invention are embodied in:
(1) vascular refrigerator that the present invention designs is had very big using bellows as the inertia tube in vascular refrigerator
Phase modulation range, and phase modulation is very flexible, can satisfy the phase modulation angle demand under vascular refrigerator difference operating condition, realizes vascular
The promotion of refrigeration machine performance.
(2) vascular refrigerator that the present invention designs substitutes the common of more different lengths using single bellows-type inertia tube
Inertia tube, convenient for needed for amendment actual conditions obtained by theoretical calculation between deviation, economize on resources and cost.
(3) the bellows-type inertia tube in the vascular refrigerator that the present invention designs, can use its good flexible characteristic,
The vascular hot-side heat exchanger and air reservoir for connecting different location, allow vascular refrigerator that can have different installation form and installation position
It sets, it is easy for installation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of vascular refrigerator of the present invention；
Fig. 2 is the structural schematic diagram of bellows-type inertia tube in the present invention；
Fig. 3 is the analog result of the inertia tube phase modulation of different length；
Fig. 4 is the analog result of the inertia tube phase modulation of different inner diameters.
Specific embodiment
Fig. 1 is the structural schematic diagram of vascular refrigerator of the present invention, including bellows-type inertia tube 1, vascular hot-side heat exchanger
2, vascular 3, vascular cold end heat exchanger 4, regenerator 5, grade aftercooler 6, compressor 7, air reservoir 8.Bellows-type inertia tube 1 is installed
Between vascular hot-side heat exchanger 2 and air reservoir 8, to adjust the phase of pressure wave and quality stream in vascular.
As shown in Fig. 2, the inertia tube structure in the present invention includes high-pressure resistant corrugated pipe 9, flange 10, bolt 11, band aperture
Length adjustment straight-bar 12, nut 13, length adjustment screw rod 14, connector 15.
When vascular refrigerator is run, there are a phase differences between the quality stream and pressure wave of gas in vascular, according to enthalpy
It is theoretical to flow phase modulation, in the constant situation of other conditions, to obtain more refrigerating capacitys, then to make this phase absolute value of the difference most
Possibly reduce.Inertia tube can be used and carry out phase modulation, to make up the phase difference between quality stream and pressure wave.The tune of inertia tube
Phase mode, which is mainly reflected in, changes its length of tube and internal diameter, to change its phase modulation angle, with the arteries and veins being suitable under different operating conditions
Control cold.The present invention can adjust bellows-type inertia tube by changing the effective length of aperture adjusting straight-bar and screw rod
Length and internal diameter.Regulating member can guarantee the structural stability of bellows-type inertia tube when vascular refrigerator is run.
As shown in figure 3, being 25Hz, average pressure P in frequency fOFor 1.0MPa, pressure ratio PrIt is 1.15, air reservoir volume VrFor
Under conditions of 1000ml, internal diameter d are 2.5mm, phase angle and inertia tube arrival end sound function size are exchanged in the variation of inertia length of tube
Influence.Under this condition, as inertia length of tube increases, then phase modulation angle first increases and then decreases increases, and enters voice function
Also in similar trend.
Fig. 4 is shown, is 25Hz, average pressure P in frequency fOFor 1.0MPa, pressure ratio PrIt is 1.15, air reservoir volume VrFor
Under conditions of 1000ml, inertia length of tube L are 1.5m, phase angle and inertia tube arrival end sound function are exchanged in the variation of inertia bore
The influence of size.Under this condition, as internal diameter increases, the phase modulation angle first increases and then decreases of bellows, arrival end sound function is not
It is disconnected to increase.It can be seen that exchanging phase angle and the size of inertia tube arrival end sound function by the variation of length and internal diameter has very big shadow
It rings.
In order to search out the best phase modulation angle under a certain operating condition, it can stretch to bellows-type inertia tube, make it
Show different phase modulation effects.By taking Fig. 3 as an example, when original inertia length of tube is 1m, if vascular refrigerator needs 35 degree
Phase modulation angle, then can be reached by increasing the length of inertia tube.Since under different operating conditions and service condition, inertia pipe range
Different graph of relation will be presented in degree internal diameter and its phase modulation angle etc., when length internal diameter changes, because between each factor of refrigeration machine
The relationship to intercouple, makes other parameters also change, so the length of inertia tube and internal diameter are not deposited with its phase modulation angle
In one-to-one relationship.
The foregoing is merely preferable implementation examples of the invention, are not intended to restrict the invention, it is all in spirit of that invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of vascular refrigerator equipped with adjustable bellows formula inertia tube, including be sequentially communicated compressor, grade aftercooler,
Regenerator, vascular cold end heat exchanger, vascular, vascular hot-side heat exchanger and phase modulating mechanism, which is characterized in that the phase modulating mechanism
Including the bellows-type inertia tube being connected to vascular hot-side heat exchanger, and the gas being connected to the bellows-type inertia tube other end
Library, the bellows-type inertia tube are a bellows for having regulating device, adjust bellows-type inertia by regulating device
The length and internal diameter of pipe；
The bellows determines bending angle according to the position of air reservoir and vascular；The regulating device includes being mounted on ripple
Straight-bar and screw rod between several flanges and flange of pipe different location；
The flange of the straight-bar and bellows bending section is fixed；The flange of the screw rod and bellows straightway is fixed.
2. the vascular refrigerator according to claim 1 equipped with adjustable bellows formula inertia tube, which is characterized in that described
Several apertures are equidistantly spaced from straight-bar, by the way that straight-bar is fixed on flange with hole diameter matched bolt.
3. the vascular refrigerator according to claim 1 equipped with adjustable bellows formula inertia tube, which is characterized in that described
Screw rod is fixed on flange by nut.
4. the vascular refrigerator according to claim 1 equipped with adjustable bellows formula inertia tube, which is characterized in that close to wave
Straight-bar length on the inside of line pipe bending section is less than the straight-bar length on the outside of bellows bending section.
5. the vascular refrigerator according to claim 1 equipped with adjustable bellows formula inertia tube, which is characterized in that described
Spiro rod length is equal.
6. the vascular refrigerator according to claim 1 equipped with adjustable bellows formula inertia tube, which is characterized in that adjacent two
The quantity that straight-bar or screw rod are arranged between a flange is four.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473998.7A CN108317764B (en) | 2017-12-29 | 2017-12-29 | A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711473998.7A CN108317764B (en) | 2017-12-29 | 2017-12-29 | A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108317764A CN108317764A (en) | 2018-07-24 |
| CN108317764B true CN108317764B (en) | 2019-10-18 |
Family
ID=62893370
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711473998.7A Active CN108317764B (en) | 2017-12-29 | 2017-12-29 | A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108317764B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109386981B (en) * | 2018-11-21 | 2023-07-04 | 中国科学院上海技术物理研究所 | Cold shrink resistant device for integrated coupling of straight line vascular cold finger and Dewar |
| CN109579342A (en) * | 2019-01-10 | 2019-04-05 | 中国科学院上海技术物理研究所 | Single compressor drives two vascular cold finger systems, two cold finger cooling capacity distributor and method |
| CN110849015A (en) * | 2019-10-31 | 2020-02-28 | 杭州电子科技大学 | Pulse tube refrigerator capable of adjusting length of inertia tube in real time |
| CN111879027A (en) * | 2020-07-28 | 2020-11-03 | 上海理工大学 | Flexible pulse tube refrigerator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998000677A1 (en) * | 1996-07-01 | 1998-01-08 | The Regents Of The University Of California | Orifice pulse tube with variable phase shift |
| CN103968592A (en) * | 2014-04-08 | 2014-08-06 | 浙江大学 | Pulse tube refrigerator using corrugated pipe as adjustable air reservoir |
| US9091463B1 (en) * | 2011-11-09 | 2015-07-28 | The United States Of America As Represented By The Secretary Of The Air Force | Pulse tube refrigerator with tunable inertance tube |
| CN106839491A (en) * | 2017-02-28 | 2017-06-13 | 浙江大学 | A kind of vascular refrigerator |
| CN106996655A (en) * | 2017-02-28 | 2017-08-01 | 浙江大学 | A kind of vascular refrigerator with bushing type inertia tube |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8397520B2 (en) * | 2009-11-03 | 2013-03-19 | The Aerospace Corporation | Phase shift devices for pulse tube coolers |
-
2017
- 2017-12-29 CN CN201711473998.7A patent/CN108317764B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998000677A1 (en) * | 1996-07-01 | 1998-01-08 | The Regents Of The University Of California | Orifice pulse tube with variable phase shift |
| US9091463B1 (en) * | 2011-11-09 | 2015-07-28 | The United States Of America As Represented By The Secretary Of The Air Force | Pulse tube refrigerator with tunable inertance tube |
| CN103968592A (en) * | 2014-04-08 | 2014-08-06 | 浙江大学 | Pulse tube refrigerator using corrugated pipe as adjustable air reservoir |
| CN105546866A (en) * | 2014-04-08 | 2016-05-04 | 浙江大学 | pulse tube refrigerator with corrugated pipe as adjustable gas storage |
| CN106839491A (en) * | 2017-02-28 | 2017-06-13 | 浙江大学 | A kind of vascular refrigerator |
| CN106996655A (en) * | 2017-02-28 | 2017-08-01 | 浙江大学 | A kind of vascular refrigerator with bushing type inertia tube |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108317764A (en) | 2018-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108317764B (en) | A kind of vascular refrigerator equipped with adjustable bellows formula inertia tube | |
| CN108168131B (en) | Refrigerating system with primary compression and secondary throttling noise reduction | |
| US10989196B2 (en) | Compressor having muffler function | |
| CN103206798A (en) | Self-adaptation variable volume refrigeration system | |
| US20190226732A1 (en) | Noise reduction device of refrigeration equipment | |
| CN102538271A (en) | Pulse tube refrigerating machine capable of inhibiting direct currents | |
| CN106839491B (en) | A kind of vascular refrigerator | |
| CN209764447U (en) | Closed surface cooler performance test bed with intermediate refrigerant under frosting working condition | |
| CN103423525B (en) | Reducing pipe, there is the refrigeration system of this reducing pipe and there is the refrigerator of this refrigeration system | |
| CN109945325A (en) | The control method of silencer, air conditioner and air conditioner | |
| CN202833176U (en) | Enthalpy increasing pipe of rotary compressor, fixed assembly and compressor | |
| WO2022037126A1 (en) | Gas flow pulsation damping device, and screw compressor having same | |
| CN106996655B (en) | A kind of vascular refrigerator with bushing type inertia tube | |
| CN111928513A (en) | Novel pulse tube refrigerator | |
| CN106996656B (en) | Compressor and cold head coalignment, vascular refrigerator and matching process | |
| CN204923296U (en) | Air conditioner and refrigerator all -in -one | |
| CN208652722U (en) | A kind of air-conditioning system | |
| CN102865399A (en) | Electronic expansion valve | |
| CN101315079A (en) | Silencer with adjustable noise elimination frequency band | |
| Masuyama et al. | Experimental research of Stirling type pulse tube refrigerator with an active phase control | |
| CN208503024U (en) | A kind of New gas exhaust pipe | |
| CN203298536U (en) | Centrifugal water chilling unit with novel hot gas by-pass system | |
| CN212320122U (en) | Novel pulse tube refrigerator | |
| CN210441467U (en) | Refrigerating device of refrigeration equipment | |
| CN209181327U (en) | Electric expansion valve and refrigeration equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |