CN107701484B - Centrifugal refigerating compressor overheated zone closed cycle test device and its test method - Google Patents
Centrifugal refigerating compressor overheated zone closed cycle test device and its test method Download PDFInfo
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- CN107701484B CN107701484B CN201710804474.5A CN201710804474A CN107701484B CN 107701484 B CN107701484 B CN 107701484B CN 201710804474 A CN201710804474 A CN 201710804474A CN 107701484 B CN107701484 B CN 107701484B
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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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/001—Testing thereof; Determination or simulation of flow characteristics; Stall or surge detection, e.g. condition monitoring
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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
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
- F04D27/02—Surge control
- F04D27/0253—Surge control by throttling
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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
- F04D29/002—Details, component parts, or accessories especially adapted for elastic fluid pumps
-
- 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
- F04D29/06—Lubrication
- F04D29/063—Lubrication specially adapted for elastic fluid pumps
-
- 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
- F04D29/58—Cooling; Heating; Diminishing heat transfer
- F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
- F04D29/5826—Cooling at least part of the working fluid in a heat exchanger
Abstract
The invention belongs to refrigeration compressor performance the field of test technology, and in particular to centrifugal refigerating compressor overheated zone closed cycle test device and its test method.The present apparatus includes at least model machine closed cycle module, refrigerant refrigerating module and refrigerant recovering and fills module, and wherein model machine closed cycle module includes the first oil eliminator, first gas cooler, the first regulating valve and second gas cooler.The present apparatus may make refrigerant in the circulatory system always in overheated gas state, and the active control function of any suction temperature condition can be realized in tested compressor entrance, to also can ensure that its operation readiness while guaranteeing integrated member service life and operational safety；Another object of the present invention is then to provide the test method using above-mentioned apparatus.This test method includes that filling refrigerant, Oil-gas Separation, first time gas cooling, gas throttling and second of gas cooling, this method can efficiently and efficiently realize the performance test purpose of centrifugal refigerating compressor.
Description
Technical field
The invention belongs to refrigeration compressor performance the field of test technology, and in particular to centrifugal refigerating compressor overheated zone closes
Formula circulation test device and its test method.
Background technique
Centrifugal refigerating compressor cooling capacity is big, high-efficient, is the core component of refrigeration system, and the operation degree of superheat generally exists
Between 2~5K.Usual to the performance test of centrifugal refigerating compressor there are two types of scheme is available: the first scheme, according to
Specified standard testing mode in JB/T 12843-2016, which equipment is various, process is complicated, construction cost is expensive, fortune
Capable and maintenance cost is high, and control and adjusting difficulty are often larger, therefore using less.Second scheme is used compressor
After the high-temperature high-pressure refrigerant of exhaust outlet condenses to two-phase section, then carries out the mode of reducing pressure by regulating flow and be tested for the property.Above-mentioned
Although two kinds of test methods using relatively broad, can still have the following problems: since second of test mode generallys use
Single condenser carries out the rapid condensation of refrigerant, and under sharply condensation effect, above-mentioned refrigerant can be directly translated into vehicle repair major
State, this aspect will be greatly reduced the service life that compressor in communication adjusts import, while vehicle repair major state
Refrigerant is obviously also unfavorable for adjusting；On the other hand, compressor also can be in the dangerous situation of absorbing gas belt liquid operating, it is clear that also not
Conducive to safety test.Whether a kind of more simple and efficient centrifugal refigerating compressor overheated zone closed cycle test can be sought
System, thus while having high operational safety, property simple for structure and low cost, moreover it is possible to so that refrigerant is recycling always
It is avoided in system in vehicle repair major state, so that it is guaranteed that the service life of integrated member and convenient regulation performance, are this field
Technical problem urgently to be resolved in recent years.
Summary of the invention
One of purpose of the invention is to overcome above-mentioned the deficiencies in the prior art, is provided a kind of structurally reasonable and practical
Centrifugal refigerating compressor overheated zone closed cycle test device, the present apparatus may make refrigerant to be in always in the circulatory system
Overheated gas state, and the active control function of any suction temperature condition can be realized in tested compressor entrance, thus
While guaranteeing integrated member service life and operational safety, its operation readiness also can ensure that；Another mesh of the invention
The test method being then to provide using above-mentioned apparatus, efficiently and efficiently to realize the performance of centrifugal refigerating compressor
Test purpose.
To achieve the above object, the invention adopts the following technical scheme:
A kind of centrifugal refigerating compressor overheated zone closed cycle test device, it is characterised in that: the present apparatus includes at least
Model machine closed cycle module, refrigerant refrigerating module and refrigerant recovering fill module, in which:
Model machine closed cycle module, including tested compressor；By the exit of tested compressor along refrigerant travelling route
And be sequentially arranged the first oil eliminator, for execute first time refrigerant cooling operation first gas cooler, for realizing
First regulating valve of refrigerant reduced pressure operation and the second gas cooler operated for executing second of refrigerant cooling；The
Two gas coolers are connected to the entrance of tested compressor via flowmeter；
Refrigerant refrigerating module, for realizing to tested compressor motor, frequency converter, needed for refrigeration oil cooling component it is cold
The control function of amount；
Refrigerant recovering fills module, for refrigerant to be filled and recycled into the present apparatus；It is cold including refrigerant connector and connection
Matchmaker's connector and the refrigerant recovering of tested compressor import fill shut-off valve.
Preferably, the refrigerant refrigerating module includes the first compressor, by the exit of the first compressor along refrigerant
Travelling route and be sequentially arranged the second oil eliminator, condenser, liquid storage device, subcooler, filter, liquid-sighting glass and solenoid valve,
Three refrigerant branch pipelines are arranged by the exit of solenoid valve；First of refrigerant branch pipeline is connected to via the second regulating valve
To the motor of tested compressor；Second refrigerant branch pipeline is connected to the frequency conversion of tested compressor via third regulating valve
At device；Third road refrigerant branch pipeline is connected at the refrigeration oil cooling component of tested compressor via the 4th regulating valve；The
The entrance of one compressor arranges the calorimeter for ensuring the first compressor air suction degree of superheat, and calorimeter inlet communication is to tested
The motor of compressor, frequency converter, at refrigeration oil cooling component module outlet.
Preferably, there are four temperature point, three pressure-measuring-points and four recurrent state monitoring points for present apparatus setting；Its
In: the first temperature point, first pressure measuring point and first circulation status monitoring point is arranged in the entrance of tested compressor；Tested pressure
Exit setting second temperature measuring point, second pressure measuring point and the second circulation status monitoring point of contracting machine；First gas cooler
One section of refrigerant pipe road setting third temperature point and third recurrent state monitoring point between the first regulating valve；First adjusts
Save one section of refrigerant pipe road the 4th recurrent state monitoring point of setting between valve and second gas cooler；First compressor into
Third pressure-measuring-point and the 4th temperature point are arranged at one section of pipeline between mouth and calorimeter；Each pressure-measuring-point and respective tube
The two connection and closing are realized between road by respective valves.
Preferably, the present apparatus further include for realizing the pneumatic stopping valve of anti-surge function, the pneumatic stopping valve into
Port is connected to the outlet of tested compressor, and the gas outlet of pneumatic stopping valve is connected to the import of tested compressor.
Preferably, it in the refrigerant refrigerating module, is backflowed by the refrigeration oil that the second oil eliminator is isolated to the first pressure
In contracting machine.
Preferably, the present apparatus further includes cooling water module, and cooling water module is that there is the cooling water of temperature-controllable to recycle
Circuit, the cooling source or condensation source that can be used as each gas cooler, condenser and subcooler are used.
A kind of test method using the centrifugal refigerating compressor overheated zone closed cycle test device, feature exist
In the following steps are included:
1) refrigerant, is filled；
Before test, shut-off valve is filled by opening refrigerant recovering, to fill the refrigerant of specified amount into tested compressor；
2), Oil-gas Separation；
The refrigerant gas of tested compressor discharge passes through the first oil eliminator, to realize the lock out operation of refrigeration oil；
3), first time gas cooling；
First time cooling is carried out in first gas cooler from the refrigerant gas come out in the first oil eliminator；Pass through
First gas cooler is adjusted, so that the temperature of refrigerant gas be made to reach preset temperature；
4), gas throttling；
The above-mentioned refrigerant gas for reaching preset temperature realizes reduced pressure operation through the first regulating valve；It is adjusted by adjusting first
The aperture of valve, so that the pressure of refrigerant gas reaches pressure of inspiration(Pi) required for tested compressor；
5), second of gas cooling；
Refrigerant gas after gas throttling enters second gas cooler, to realize second of cooling operation；
By adjusting second gas cooler, so that the temperature of refrigerant gas be made to reach suction temperature required for tested compressor.
Preferably, this test method further includes anti-surge step；During the test, when working condition variation is severe,
Pneumatic stopping valve is opened, can prevent tested compressor from surge phenomenon occurs.
Preferably, this test method further includes pressure at expulsion regulating step；During the test, by opening refrigerant recovering
Shut-off valve is filled, so that the coolant injection amount of the present apparatus is adjusted, to realize the adjusting to the pressure at expulsion of tested compressor.
Preferably, this test method further includes the cooling regulating step of refrigerant；During the test, refrigerant refrigerating module
Locate the first compressor discharging refrigerant steam, can be condensed within the condenser, be accordingly changed into again after the second oil eliminator
Saturated liquid refrigerant；It is temporary that saturated liquid refrigerant enters liquid storage device；Later saturated liquid refrigerant by subcooler to
After reaching specified degree of supercooling, by filter, liquid-sighting glass and solenoid valve；Again respectively by adjusting three refrigerant branch pipelines
On corresponding regulating valve aperture, and then realize to needed for the motor of tested compressor, frequency converter and refrigeration oil cooling component
The control function of cooling capacity；By adjusting the electrically heated power of calorimeter, to guarantee that the first compressor is specified always
Within the scope of suction superheat.
The beneficial effects of the present invention are:
1), through the above scheme, the present invention, which passes through, freezes the centrifugal refigerating compressor exit high temperature and pressure being tested
Agent steam carries out gas section after first passing around the cooling of first gas cooler after point oil effect of the first oil eliminator again
Stream, with pressure of inspiration(Pi) needed for obtaining refrigeration compressor.More importantly cooling since present invention employs dual stageds
Mode, rather than the mode of operation that traditional disposable steep cliff formula directly condenses, therefore, first gas cooler is no longer direct
Acutely cooling, but by a gas cooling and after throttling, still keep refrigerant gas to be in relatively high air-breathing mistake
Warm status, it is clear that the refrigerant gas is still unfavorable for the safety and operation of compressor at this time.Later, the present invention passes through the second gas again
Body cooler, thus realize the reducing temperature twice regulatory function to the above-mentioned primary refrigerant gas that cooled down after pressure regulation,
So that tested compressor entrance can obtain arbitrary suction temperature condition, and ensure the refrigerant gas under the suction temperature
Always it is in the overheated gas state specified rather than vehicle repair major state.Finally, the flow measurement installed on reuse means
The mass flow of tested compressor is obtained, and then meets tested compressor to parameters such as refrigerating capacity, COP, volumetric efficiency, isentropic efficiencys
Test request.Above-mentioned circulation of the invention is run in overheated zone, and whole flow process is simple, equipment is few, low in cost and behaviour
Make simple and reliable, can guarantee integrated member service life and while operational safety, also can ensure that its operation readiness.
2), the present invention fills module by setting refrigerant recovering, thus coolant charging and recycling function in realization device.
Even dduring test, shut-off valve also is filled by opening refrigerant recovering, to adjust the coolant injection amount of whole device, in turn
The regulating effect to the pressure at expulsion of compressor may be implemented.Furthermore, the present invention is also provided with for realizing anti-surge function
Pneumatic stopping valve, during the test, when working condition variation it is severe when, tested compressor is easy to happen surge phenomenon, this
When open pneumatic stopping valve, surge can be prevented, and then can ensure that normal effective progress of test.
3), refrigerant refrigerating module for realizing to tested compressor motor, frequency converter, needed for refrigeration oil cooling component
The control function of cooling capacity.Refrigerant refrigerating module is having outside the constructions such as the second oil eliminator, condenser, subcooler, also sets up
Calorimeter.Refrigerant into calorimeter is vehicle repair major, has certain cooling capacity；And the purpose of calorimeter is then to pass through institute
The extra refrigerating capacity of the first compressor of electric energy balance of investment guarantees that the first compressor has the suction superheat for stablizing safety,
And then guarantee the normal operation of associated compressors.
4), the present apparatus is also set up there are four temperature point, three pressure-measuring-points and four recurrent state monitoring points；Pass through
The setting of multiple temperature points, pressure-measuring-point and recurrent state monitoring point, can effectively realize to the complete monitoring of test process and
Data collection function.
Detailed description of the invention
Fig. 1 is each structure annexation figure of the invention；
Fig. 2 is the pressure-enthalpy chart of model machine closed cycle module.
The practical corresponding relationship of each label of the present invention and component names is as follows:
T1- the first temperature point T2- second temperature measuring point
The 4th temperature point of T3- third temperature point T4-
P1- first pressure measuring point P2- second pressure measuring point P3- third pressure-measuring-point
C1- first circulation status monitoring point C2- second circulation status monitoring point
The 4th recurrent state monitoring point C3- third recurrent state monitoring point C4-
11- tested compressor 12- the first oil eliminator 13- first gas cooler
14- the first regulating valve 15- second gas cooler 16- flowmeter
21- refrigerant recovering fills shut-off valve
31- the first compressor 32- the second oil eliminator 33- condenser 34- liquid storage device
35- subcooler 36- filter 37- liquid-sighting glass 38- solenoid valve 39- calorimeter
The 4th regulating valve of a- the second regulating valve b- third regulating valve c-
40- pneumatic stopping valve
Specific embodiment
For ease of understanding, specific structure and working method of the invention are made herein described further below:
Specific structure annexation figure of the invention can refer to shown in Fig. 1 comprising model machine closed cycle module, refrigerant
Refrigerating module, refrigerant recovering filling module and cooling water module.Wherein:
Model machine closed cycle module includes tested compressor 11, the first oil eliminator 12, the first regulating valve 14, first gas
Temperature, pressure-measuring-point and temperature, the pressure arranged on cooler 13, second gas cooler 15, flowmeter 16 and circuit are protected
Protection unit etc..Above-mentioned each structure is connected by refrigerant line, is exported to tested compressor 11 by tested compressor 11 to be formed
The closed cycle circuit of import.Specifically, as shown in Figure 1, by the exit of tested compressor 11 and along tested pressure
The refrigerant direction of travel in 11 exit of contracting machine, each structural relation is according to the first oil eliminator 12, first gas cooler 13,
One regulating valve 14, second gas cooler 15 and flowmeter 16 are sequentially arranged.The pneumatic stopping valve 40 of anti-surge then with
What above-mentioned closed cycle circuit was in parallel is arranged in the side of tested compressor 11, and is connected to the import of tested compressor 11 and goes out
Mouthful.
It is the water cooling Condensing units containing calorimeter 39 for refrigerant refrigerating module.Refrigerant refrigerating module
Mainly comprising the first compressor 31, the second oil eliminator 32, condenser 33, liquid storage device 34, subcooler 35, filter 36, view liquid
Temperature, pressure-measuring-point and the temperature arranged on mirror 37, each regulating valve, calorimeter and circuit, pressure protective device etc..Refrigerant
The travel path for the refrigerant that refrigerating module is gushed out according to 31 exit of the first compressor, each structural relation are separated according to the second oil
Device 32, condenser 33, liquid storage device 34, subcooler 35, filter 36, liquid-sighting glass 37 and solenoid valve 38 and sequentially arrange.In electromagnetism
Refrigerant branch pipeline at the exit setting three of valve 38.First of refrigerant branch pipeline is connected to via the second regulating valve a
At the motor of tested compressor 11；Second refrigerant branch pipeline is connected to tested compressor 11 via third regulating valve b
At frequency converter；Third road refrigerant branch pipeline is via the cooling group of refrigeration oil that the 4th regulating valve c is connected to tested compressor 11
At part.The entrance of first compressor 31 arranges the calorimeter for ensuring 31 suction superheat of the first compressor, calorimeter into
Mouth is connected to the motor, frequency converter, refrigeration oil cooling component exit of tested compressor 11.
Refrigerant recovering filling module is to fill shut-off valve 21 by the refrigerant recovering on its pipeline to carry out switch operation, according to
It needs the refrigerant of closed circulation system to be recycled and filled operation.
Cooling water module is to have the cooling water circulation loop of controllable temperature, it can be achieved that each gas cooler, refrigerant are cold
But the condenser 33 of system and the cooling down of subcooler 35 or condensation function.
There are four temperature point, three pressure-measuring-points and four recurrent state monitoring points for whole device setting；Wherein, join
According to shown in FIG. 1, the first temperature point T1 of entrance setting, first pressure measuring point P1 and the first circulation shape of tested compressor 11
State monitoring point C1；Exit setting second temperature measuring point T2, second pressure measuring point P2 and the second circulation shape of tested compressor 11
State monitoring point C2；One section of refrigerant pipe road setting third temperature between first gas cooler 13 and the first regulating valve 14 is surveyed
Point T3 and third recurrent state monitoring point C3；One section of refrigerant line between first regulating valve 14 and second gas cooler 15
The 4th recurrent state monitoring point C4 of upper setting；Third is arranged at one section of pipeline between first compressor, 31 import and calorimeter 39
Pressure-measuring-point P3 and the 4th temperature point T4.
According to above structure and shown referring to Fig.1, the specific implementation step using the test method of the present apparatus is as follows:
1) refrigerant, is filled；
Before test, shut-off valve 21 is filled by opening refrigerant recovering, to fill specified amount into tested compressor 11
Refrigerant.
2), Oil-gas Separation；
The refrigerant gas that tested compressor 11 is discharged passes through the first oil eliminator 12, to realize the separation behaviour of refrigeration oil
Make.
3), first time gas cooling；
The refrigerant gas come out from the first oil eliminator 12 carries out first time cooling in first gas cooler 13；
By adjusting first gas cooler 13, so that the temperature of refrigerant gas be made to reach preset temperature T3.
4), gas throttling；
The above-mentioned refrigerant gas for reaching preset temperature T3 realizes reduced pressure operation through the first regulating valve 14；By adjusting first
The aperture of regulating valve 14, so that the pressure of refrigerant gas reaches pressure of inspiration(Pi) P1 required for tested compressor 11.
By 3) step and 4) after step, it is listed below the temperature in 14 exit of the first regulating valve under specific operating condition at this time
And suction superheat, it is as shown in table 1 below:
Table 1
5), second of gas cooling；
Refrigerant gas after gas throttling enters second gas cooler 15, to realize second of cooling behaviour
Make.By adjusting second gas cooler 15, to realize the secondary temperature tune to the refrigerant gas after pressure regulation in above-mentioned table 1
Save function.Due in above-mentioned table 1 suction superheat and corresponding temperature be adjusted once, opposite is more close
Suction temperature T1 needed for tested compressor 11 relies on the cooling controllability of second gas cooler 15, to make again later
Suction temperature T1 needed for tested compressor 11 be it is how many, corresponding numerical value can be obtained by the second cooler 15 of adjusting,
And it can ensure that the refrigerant gas under the suction temperature is in overheated gas state rather than vehicle repair major state always.
6), pressure at expulsion regulating step；
During the test, shut-off valve 21 is filled by opening refrigerant recovering, so that the coolant injection amount of the present apparatus is adjusted,
To realize the adjusting to the pressure at expulsion P2 of tested compressor 11.
7), anti-surge step；
During the test, when working condition variation is severe, pneumatic stopping valve 40 is opened, tested compressor 11 can be prevented
Surge phenomenon occurs.
8), the cooling regulating step of refrigerant；
During the test, 31 discharging refrigerant steam of the first compressor at refrigerant refrigerating module, can be by the second oil
It is condensed in condenser 33 again after separator 32, is accordingly changed into saturated liquid refrigerant；Saturated liquid refrigerant enters storage
Liquid device 34 is temporary.Later, saturated liquid refrigerant is after subcooler 35 is to reach specified degree of supercooling, by filter
36, liquid-sighting glass 37 and solenoid valve 38；Again respectively by adjusting the aperture of the corresponding regulating valve on three refrigerant branch pipelines, into
And realize the control function to the motor of tested compressor 11, frequency converter and refrigeration oil cooling component institute chilling requirement.Pass through tune
The electrically heated power of throttling calorimeter, to guarantee the first compressor 31 always within the scope of specified suction superheat.
Claims (10)
1. a kind of centrifugal refigerating compressor overheated zone closed cycle test device, it is characterised in that: the present apparatus includes at least sample
Machine closed cycle module, refrigerant refrigerating module and refrigerant recovering fill module, in which:
Model machine closed cycle module, including tested compressor (11)；It is advanced by the exit of tested compressor (11) along refrigerant
Route and be sequentially arranged the first oil eliminator (12), for execute first time refrigerant cooling operation first gas cooler
(13), for realizing the first regulating valve (14) of refrigerant reduced pressure operation and for executing second of refrigerant cooling operation
Second gas cooler (15)；Second gas cooler (15) be connected to via flowmeter (16) tested compressor (11) into
At mouthful；
Refrigerant refrigerating module, for realizing to tested compressor (11) motor, frequency converter, needed for refrigeration oil cooling component it is cold
The control function of amount；
Refrigerant recovering fills module, for refrigerant to be filled and recycled into the present apparatus；It is connect including refrigerant connector and connection refrigerant
Head and the refrigerant recovering of tested compressor (11) import fill shut-off valve (21).
2. a kind of centrifugal refigerating compressor overheated zone closed cycle test device according to claim 1, feature exist
In: the refrigerant refrigerating module includes the first compressor (31), is advanced by the exit of the first compressor (31) along refrigerant
Route and be sequentially arranged the second oil eliminator (32), condenser (33), liquid storage device (34), subcooler (35), filter (36), view
Liquid mirror (37) and solenoid valve (38) arrange three refrigerant branch pipelines by the exit of solenoid valve (38)；First of refrigeration
Agent branch line is connected at the motor of tested compressor (11) via the second regulating valve (a)；Second refrigerant branch pipeline
It is connected to via third regulating valve (b) at the frequency converter of tested compressor (11)；Third road refrigerant branch pipeline is via the 4th
Regulating valve (c) is connected at the refrigeration oil cooling component of tested compressor (11)；The entrance of first compressor (31), which is arranged, to be used
In the calorimeter (39) for ensuring the first compressor (31) suction superheat, calorimeter (39) inlet communication to tested compressor (11)
Motor, frequency converter, refrigeration oil cooling component exit.
3. a kind of centrifugal refigerating compressor overheated zone closed cycle test device according to claim 2, feature exist
In: the present apparatus is at least provided with four temperature points, three pressure-measuring-points and four recurrent state monitoring points；Wherein: tested
The first temperature point, first pressure measuring point and first circulation status monitoring point is arranged in the entrance of compressor (11)；By measured compressed
Exit setting second temperature measuring point, second pressure measuring point and the second circulation status monitoring point of machine (11)；First gas is cooling
One section of refrigerant pipe road setting third temperature point and third recurrent state prison between device (13) and the first regulating valve (14)
Measuring point；The 4th recurrent state of one section of refrigerant pipe road setting between first regulating valve (14) and second gas cooler (15)
Monitoring point；Third pressure-measuring-point and the 4th temperature are arranged at one section of pipeline of first compressor (31) between import and calorimeter
Measuring point；The two connection and closing are realized between each pressure-measuring-point and corresponding pipeline by respective valves.
4. a kind of centrifugal refigerating compressor overheated zone closed cycle test device according to claim 1 or 2 or 3,
Be characterized in that: the present apparatus further includes the pneumatic stopping valve (40) for realizing anti-surge function, the pneumatic stopping valve (40)
Air inlet be connected to tested compressor (11) outlet, and the gas outlet of pneumatic stopping valve (40) connection tested compressor (11) into
Mouthful.
5. a kind of centrifugal refigerating compressor overheated zone closed cycle test device according to claim 2 or 3, feature
It is: in the refrigerant refrigerating module, is backflowed by the refrigeration oil that the second oil eliminator (32) is isolated to the first compressor
(31) in.
6. a kind of centrifugal refigerating compressor overheated zone closed cycle test device according to claim 2 or 3, feature
Be: the present apparatus further includes cooling water module, and cooling water module is the cooling water circulation loop with temperature-controllable, be can be used as
Cooling source or the condensation of first gas cooler (13), second gas cooler (15), condenser (33) and subcooler (35)
Source is used.
7. a kind of test side for applying centrifugal refigerating compressor overheated zone closed cycle test device as described in claim 1
Method, it is characterised in that the following steps are included:
1) refrigerant, is filled；
Before test, by opening refrigerant recovering filling shut-off valve (21), thus the filling specified amount into tested compressor (11)
Refrigerant；
2), Oil-gas Separation；
The refrigerant gas of tested compressor (11) discharge passes through the first oil eliminator (12), to realize the separation behaviour of refrigeration oil
Make；
3), first time gas cooling；
The refrigerant gas come out from the first oil eliminator (12) carries out first time cooling in first gas cooler (13)；
By adjusting first gas cooler (13), so that the temperature of refrigerant gas be made to reach preset temperature；
4), gas throttling；
The above-mentioned refrigerant gas for reaching preset temperature realizes reduced pressure operation through the first regulating valve (14)；It is adjusted by adjusting first
The aperture of valve (14), so that the pressure of refrigerant gas reaches pressure of inspiration(Pi) required for tested compressor (11)；
5), second of gas cooling；
Refrigerant gas after gas throttling enters second gas cooler (15), to realize second of cooling operation；
By adjusting second gas cooler (15), inhaled so that the temperature of refrigerant gas be made to reach required for tested compressor (11)
Temperature degree.
8. test method according to claim 7, it is characterised in that: this test method further includes anti-surge step；This survey
Method for testing further includes anti-surge step: during the test, when working condition variation is severe, opens pneumatic stopping valve (40),
It can prevent tested compressor (11) that surge phenomenon occurs；The air inlet of the pneumatic stopping valve (40) is connected to tested compressor (11)
Outlet, and the gas outlet of pneumatic stopping valve (40) connection tested compressor (11) import.
9. test method according to claim 7, it is characterised in that: this test method further includes that pressure at expulsion adjusts step
Suddenly；During the test, by opening refrigerant recovering filling shut-off valve (21), so that the coolant injection amount of the present apparatus is adjusted, with
Realize the adjusting to the pressure at expulsion of tested compressor (11).
10. test method according to claim 7, it is characterised in that: this test method, which further includes that refrigerant is cooling, to be adjusted
Step；During the test, the first compressor (31) discharging refrigerant steam at refrigerant refrigerating module can pass through the second oil
It is condensed in condenser (33) again from after device (32), is accordingly changed into saturated liquid refrigerant；Saturated liquid refrigerant enters
Liquid storage device (34) is temporary；Saturated liquid refrigerant passed through after subcooler (35) are to reach specified degree of supercooling later
Filter (36), liquid-sighting glass (37) and solenoid valve (38)；Again respectively by adjusting the corresponding adjusting on three refrigerant branch pipelines
The aperture of valve, and then realize the control to the motor of tested compressor (11), frequency converter and refrigeration oil cooling component institute chilling requirement
Function processed；By adjusting the electrically heated power of calorimeter, to guarantee the first compressor (31) always in specified air-breathing
Within the scope of the degree of superheat；The calorimeter (39) is arranged in the entrance of the first compressor (31), and calorimeter (39) inlet communication is extremely
The motor of tested compressor (11), frequency converter, refrigeration oil cooling component exit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710804474.5A CN107701484B (en) | 2017-09-08 | 2017-09-08 | Centrifugal refigerating compressor overheated zone closed cycle test device and its test method |
Applications Claiming Priority (1)
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| CN110793798B (en) * | 2019-11-20 | 2021-07-30 | 上海交通大学 | Refrigeration system oil stagnation characteristic comprehensive test device and test method thereof |
| CN112253523B (en) * | 2020-12-08 | 2021-03-09 | 中国航发上海商用航空发动机制造有限责任公司 | Test method and tester for identifying stall initial stage of multistage axial flow compressor |
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| US7017358B2 (en) * | 2003-03-19 | 2006-03-28 | Delta Design, Inc. | Apparatus and method for controlling the temperature of an electronic device |
| CN2816786Y (en) * | 2005-09-02 | 2006-09-13 | 合肥通用环境控制技术有限责任公司 | Novel device for detecting performance of refrigerating compression-condensation machine group |
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| CN203770116U (en) * | 2013-11-05 | 2014-08-13 | 上海理工大学 | Performance testing device for carbon dioxide trans-critical compressor |
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| EP1795838A2 (en) * | 2002-11-07 | 2007-06-13 | Sanyo Electric Co., Ltd. | Multistage compression type rotary compressor and cooling device |
| US7017358B2 (en) * | 2003-03-19 | 2006-03-28 | Delta Design, Inc. | Apparatus and method for controlling the temperature of an electronic device |
| CN2816786Y (en) * | 2005-09-02 | 2006-09-13 | 合肥通用环境控制技术有限责任公司 | Novel device for detecting performance of refrigerating compression-condensation machine group |
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