CN204479433U - The proving installation of solubleness and viscosity - Google Patents
The proving installation of solubleness and viscosity Download PDFInfo
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- CN204479433U CN204479433U CN201520060017.6U CN201520060017U CN204479433U CN 204479433 U CN204479433 U CN 204479433U CN 201520060017 U CN201520060017 U CN 201520060017U CN 204479433 U CN204479433 U CN 204479433U
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Abstract
The utility model discloses the proving installation of a kind of solubleness and viscosity, comprising the airtight container of the mixed solution for holding refrigerator oil to be tested and refrigeration working medium, constant temperature system, pumped vacuum systems, pressure testing system, system for detecting temperature, viscosity test system, sampling system, coolant injection system and stirring system; Described airtight container is arranged in described constant temperature system, and described pumped vacuum systems, described pressure testing system, described system for detecting temperature, described viscosity test system, described sampling system, described coolant injection system are all communicated with the inside of described airtight container with described stirring system.Proving installation structure of the present utility model is simple, easy to operate, safe and reliable, can carry out the test of viscosity and solubleness simultaneously, thus simplify testing procedure, improve test speed and measuring accuracy.
Description
Technical field
The utility model relates to refrigeration technology field, particularly relates to a kind of device testing the mixed solution viscosity of the solubleness of refrigeration working medium in refrigerator oil and refrigeration working medium and refrigerator oil.
Background technology
Refrigerator oil is the important lubricating fluid of one in refrigeration system, has contact closely in systemic circulation with refrigeration working medium.In compression-type refrigeration circulation, cold-producing medium can contact with compressor and freeze machine oil, and refrigerator oil enters into heat transmission equipment with refrigeration working medium, thus has an impact to refrigeration system.Wherein, refrigerator oil is relevant to the dissolved state between refrigeration working medium and refrigerator oil on the impact of refrigeration system.
When mutual solubility between refrigeration working medium and refrigerator oil is better, the oil film formed at heat exchanger heat transfer pipe internal surface is thinner, heat exchanging is favourable, but, when mutual solubility between refrigeration working medium and refrigerator oil has been crossed, refrigerator oil dilution can cause refrigerating machine oil viscosity too small by cold-producing medium, and then causes the reduction of the bad and refrigerating efficiency of compressor lubrication; And when cold-producing medium and lubricating oil can not dissolve each other completely, compressor oil return difficulty can be caused, make refrigerator oil in evaporator and condenser too much cause compressor oil starvation.Such as, between R32 refrigerant and existing R410a oil, intermiscibility is poor, there will be the phenomenon of cold-producing medium and refrigerator oil layering within the scope of-20 DEG C ~ 50 DEG C; And mutual solubility between R290 cold-producing medium and R410a oil is too large, significantly can reduces refrigerating machine oil viscosity, reduce lubricant effect, thus cause the resistance to abrasion of part and sealing property to decline.
Therefore, need to test in the solubleness of refrigerator oil and the two mixed viscosity refrigeration working medium, thus select suitable product.But, utilize current proving installation to carry out test process loaded down with trivial details, expend time in, and precision be not high.
Utility model content
The utility model provides the proving installation of a kind of solubleness and viscosity, the content of the refrigeration working medium utilizing this device accurately to dissolve in test for freeze machine oil, can also the viscosity of refrigerator oil and refrigeration working medium mixed solution under testing high voltage state, test process is simple, and measuring accuracy is high.
For achieving the above object, the utility model adopts following technical scheme:
A proving installation for solubleness and viscosity, comprises the airtight container of the mixed solution for holding refrigerator oil to be tested and refrigeration working medium, constant temperature system, pumped vacuum systems, pressure testing system, system for detecting temperature, viscosity test system, sampling system, coolant injection system and stirring system;
Described airtight container is arranged in described constant temperature system, and described pumped vacuum systems, described pressure testing system, described system for detecting temperature, described viscosity test system, described sampling system, described coolant injection system are all communicated with the inside of described airtight container with described stirring system.
Wherein in an embodiment, described airtight container comprises top cover, diapire, sidewall and ring flange;
Described sidewall is around in the container cavity described diapire being formed one end open;
The cross-sectional area of described top cover is greater than the aperture area of described container cavity, and described top cover covers the openend of described container cavity;
Described ring flange is fixedly installed on the openend of described container cavity, the upper surface of described ring flange and the lower surface close contact of described top cover, and described ring flange and described top cover removably connect.
Wherein in an embodiment, the upper surface of described ring flange is provided with groove, the xsect of described groove is annular, and described container cavity is around in wherein by described groove;
Be provided with O-ring seal in described groove, described ring flange and described top cover are sealed by described O-ring seal.
Wherein in an embodiment, described constant temperature system comprises bath, heat transfer medium and bracing frame;
Described heat transfer medium is contained in described bath;
Support frame as described above is fixed in described bath, and support frame as described above is for supporting described airtight container.
Wherein in an embodiment, support frame as described above is the tubular structure all do not bound up and down, and described tubular structure is made up of the steel plate of hollow out;
The height of described tubular structure is greater than the height of described airtight container, and described airtight container is supported on described tubular structure by described ring flange.
Wherein in an embodiment, described pressure testing system comprises pressure transducer and pressure display instrument table, and described pressure transducer is electrically connected with described pressure display instrument table; Described top cover is provided with the first preformed hole t, described pressure transducer is communicated with the inside of described airtight container by described first preformed hole t;
Described system for detecting temperature comprises temperature sensor and temperature display meter, and described temperature sensor is electrically connected with described temperature display meter; Described top cover is provided with the second preformed hole j, described temperature display meter is communicated with the inside of described airtight container by described second preformed hole j.
Wherein in an embodiment, described viscosity test system comprises viscosity meter, viscosity meter connecting line and viscosity collector, and described viscosity meter is connected with described viscosity collector by described viscosity meter connecting line;
The sidewall of described container cavity is provided with the 3rd preformed hole, described viscosity meter is arranged in described 3rd preformed hole, and described viscosity meter is communicated with the inside of described airtight container by described 3rd preformed hole.
Wherein in an embodiment, described sampling system comprises sampler and the first communicating pipe;
Described first communicating pipe is provided with the first valve, described sampler is provided with charging aperture and discharging opening, described charging aperture place is provided with the second valve, and described discharge outlet is provided with the 3rd valve;
Described top cover is provided with the 4th preformed hole q, one end of described first communicating pipe is communicated with the inside of described airtight container by described 4th preformed hole q, and the other end of described first communicating pipe is communicated with described charging aperture.
Wherein in an embodiment, described coolant injection system comprises refrigerant source and the second communicating pipe for providing refrigeration working medium, is provided with the 4th valve described second communicating pipe; Described top cover is provided with the 5th preformed hole y, one end of described second communicating pipe is communicated with the inside of described airtight container by described 5th preformed hole y, and the other end of described second communicating pipe is communicated with described refrigerant source;
Described pumped vacuum systems comprises vacuum pump and third connecting pipe, described third connecting pipe is provided with the 5th valve; Described top cover is provided with the 6th preformed hole p, one end of described third connecting pipe is communicated with the inside of described airtight container by described 6th preformed hole p, and the other end of described third connecting pipe is communicated with described vacuum pump.
Wherein in an embodiment, described 5th preformed hole y and described 6th preformed hole p is same preformed hole.
Wherein in an embodiment, described airtight container bear pressure >=10MPa.
The beneficial effects of the utility model are as follows:
The proving installation of solubleness of the present utility model and viscosity comprises viscosity test system and sampling system, wherein, viscosity test system is used for the viscosity of the mixed solution of refrigerator oil and refrigeration working medium under testing high voltage state, sampling system is for taking out the sample of well-mixed refrigerator oil and refrigeration working medium in airtight container, the solubleness of refrigeration working medium in refrigerator oil can be calculated by the sample taken out, proving installation structure of the present utility model is simple, easy to operate, safe and reliable, the test of viscosity and solubleness can be carried out simultaneously, thus simplify testing procedure, improve test speed and measuring accuracy.; And utilize device of the present utility model can calculate solubleness by the method for weighing, compared with volume method of testing in the past, process is simple, and precision is higher.According to test result of the present utility model, suitable refrigerator oil and refrigeration working medium can be selected, thus ensure the operation reliably and with long-term of compressor.
Accompanying drawing explanation
Fig. 1 is the cut-open view of proving installation one embodiment of solubleness of the present utility model and viscosity
Fig. 2 is the cut-open view of airtight container in Fig. 1;
Fig. 3 is the vertical view of top cover in Fig. 1;
Fig. 4 is the expansion planimetric map of bracing frame in Fig. 1.
Embodiment
The utility model is described in detail below in conjunction with embodiment.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.
The utility model provides the proving installation of a kind of solubleness and viscosity, as shown in Figure 1, proving installation of the present utility model comprises airtight container 5, constant temperature system, pumped vacuum systems, pressure testing system, system for detecting temperature, viscosity test system, sampling system, coolant injection system and stirring system.In the utility model, airtight container 5 is arranged in constant temperature system, and pumped vacuum systems, pressure testing system, system for detecting temperature, viscosity test system, sampling system, coolant injection system are all communicated with the inside of airtight container 5 with stirring system.
Wherein, airtight container 5 for holding the mixed solution 22 of refrigerator oil to be tested and refrigeration working medium, and provides place for the mixing of refrigerator oil and refrigeration working medium; Constant temperature system is used for providing stationary temperature for airtight container 5; Pumped vacuum systems is used for vacuumizing for airtight container 5; Pressure testing system is for testing the pressure of gas in airtight container 5 (refrigeration working medium of gas phase); System for detecting temperature is for detecting the temperature of liquid in airtight container 5 (mixed solution of refrigerator oil and refrigeration working medium); Viscosity test system is for testing the viscosity of liquid in airtight container 5; Sampling system is for extracting the mixed solution 22 of well-mixed refrigerator oil and refrigeration working medium in closed container; Coolant injection system is used for providing refrigeration working medium for described airtight container 5; Stirring system is used for the stirring of refrigerator oil and refrigeration working medium, to make the two fully mix.
See Fig. 2, as a kind of embodiment, airtight container 5 comprises top cover 5a, diapire 5g and sidewall 5e.Wherein, sidewall 5e is around in container cavity diapire 5g being formed one end open; The cross-sectional area of top cover 5a is greater than the aperture area of container cavity, and top cover 5a covers the openend of container cavity, thus is sealed by container cavity, forms airtight container 5.
Continue see Fig. 2, airtight container 5 also comprises ring flange 5d, ring flange 5d is fixedly installed on the openend of container cavity, simultaneously, the lower surface close contact of ring flange 5d upper surface and top cover 5a, and ring flange 5d and top cover 5a removably connects, wherein, ring flange 5d is connected by the screw 5b shown in Fig. 2 with top cover 5a, also connects by fixture.Which by arranging ring flange 5d in open end, thus improves the sealing property of airtight container 5, is beneficial to the raising of measuring accuracy.Preferably, as a kind of embodiment, ring flange 5d is fixedly installed on the openend of container cavity by the mode of solder 5f.
As preferably, the upper surface of ring flange 5d is provided with groove, the xsect of groove is annular, and described container cavity is around in wherein by groove; Further, be provided with O-ring seal 5c in groove, ring flange 5d and top cover 5a is sealed by O-ring seal 5c.Wherein, O-ring seal 5c will have good high temperature resistant, corrosion-resistant and resistance to chlorine, is preferably hydrogenated butyronitrile O-ring seal or viton seal ring.Present embodiment, by the setting of O-ring seal 5c, further increases the sealing property of airtight container 5.
Due to the object in the utility model be test elevated pressures under viscosity and solubleness, therefore, in order to improve test specification, strengthen the practicality of proving installation of the present utility model, airtight container 5 has higher high voltage performance, and more preferably, the pressure that bears of airtight container 5 is more than or equal to 10MPa.The utility model without particular restriction, is preferably 500ml ~ 800ml for the volume of airtight container 5.
See Fig. 1, as a kind of embodiment, constant temperature system comprises bath 1 and heat transfer medium 2, and wherein, heat transfer medium 2 is contained in bath 1.When testing, airtight container 5 being positioned in the heat transfer medium 2 in bath 1, regulating by the temperature of heat transfer medium 2 pairs of airtight containers 5 and keep.In addition, constant temperature system also comprises temperature controller (not shown), and this temperature controller is for controlling the temperature remained constant of heat transfer medium 2 in bath 1, and preferably, the control accuracy of temperature controller is ± 0.3 DEG C.
Wherein, the concrete selection of heat transfer medium 2 needs to determine according to test condition, and when solubleness and the viscosity of refrigerator oil and refrigeration working medium under test for low temperature condition, heat transfer medium 2 is preferably alcohol, more excellent for concentration be more than or equal to 75% alcohol; Under test hot conditions when the solubleness of refrigerator oil and refrigeration working medium and viscosity, heat transfer medium 2 is preferably water or silicone oil, also can be the medium that other are suitable.
Continue see Fig. 1, preferably, in order to strengthen the homogeneity of temperature in airtight container 5, in bath 1, being also provided with bracing frame 6, when testing, airtight container 5 being placed on bracing frame 6.Which avoids the phenomenon that airtight container 5 and the bottom of bath 1 directly contact the temperature inequality caused, and ensure that fully contacting of airtight container 5 and heat transfer medium 2.
See Fig. 1 and Fig. 2, as a kind of embodiment, bracing frame 6 is the tubular structure all do not bound up and down, and this tubular structure is made up by curling welding of the steel plate of hollow out, the height of this tubular structure is greater than the height of airtight container 5, and airtight container 5 is supported on tubular structure by ring flange 5d.The tubular structure that in which, bracing frame 6 designs for hollow out, and airtight container 5 is supported on the circumferentially upper of tubular structure by ring flange 5d, in thermostatic process, can keep whole container cavity not with bottom bath 1 and bracing frame 6 contact, be in the encirclement of heat transfer medium 2 completely, further increase the being heated evenly property of airtight container 5, be beneficial to the maintenance of temperature in airtight container 5.
Preferably, continue see Fig. 4, the steel plate of hollow out is distributed with multiple slotted hole equably, multiple slotted hole is the arrangement of neat column-shaped, and wherein each slotted hole is made up of the side to be parallel to each other for a pair and a pair symmetrical semi arch.As preferably, the length B of the side be parallel to each other is 18mm ~ 24mm, and the diameter A of a pair symmetrical semi arch is 10mm ~ 12mm, and in same row, the distance H between two adjacent slotted holes is 18mm ~ 24mm.Which can make heat transfer medium 2 form convection current, is conducive to cylinder-like structure and encloses temperature exchange within and outside the region, improve the homogeneity of temperature in sealer.In addition, the height D of cylinder-like structure needs to arrange according to the height of airtight container 5 and the degree of depth of bath 1, and preferably, in order to strengthen the being heated evenly property of airtight container 5, the distance bottom the bottom of airtight container 5 and bath 1 is more than or equal to 5mm.
See Fig. 1 and Fig. 3, pressure testing system comprises pressure transducer 13 and pressure display instrument table 16, and pressure transducer 12 is electrically connected with pressure display instrument table 16, and pressure display instrument table 16 is for showing the monitor temperature of pressure transducer 12; Top cover 5a is provided with the first preformed hole t, pressure transducer 12 is communicated with the inside of airtight container 5 by the first preformed hole t.In the utility model, because pressure transducer 12 is the pressure for testing gas in airtight container 5, therefore, in use, the end of probe of pressure transducer 12 is arranged in the ullage of the refrigerator oil of airtight container 5 and the mixed solution 22 of refrigeration working medium.
System for detecting temperature comprises temperature sensor 14 and temperature display meter 17, and temperature sensor 14 is electrically connected with temperature display meter 17, and temperature display meter 17 is for the detected temperatures of displays temperature sensor 14; Top cover 5a is provided with the second preformed hole j, temperature display meter 17 is communicated with the inside of airtight container 5 by the second preformed hole j.In the utility model, because temperature sensor 14 is applicable to detect the fluid temperature in airtight container 5, therefore, in use, the end of probe of temperature sensor 14 will be deep in the mixed solution 22 of refrigerator oil and refrigeration working medium.
Continue see Fig. 1, viscosity test system comprises viscosity meter 3, viscosity meter connecting line 4 and viscosity collector 7, and viscosity meter 3 is connected with viscosity collector 7 by viscosity meter connecting line 4; The sidewall of container cavity is provided with the 3rd preformed hole (figure does not mark), viscosity meter 3 is arranged in the 3rd preformed hole, and viscosity meter 3 is communicated with the inside of airtight container 5 by the 3rd preformed hole.Viscosity meter 3 is for monitoring the viscosity of the mixed solution 22 of refrigerator oil in airtight container 5 and refrigeration working medium, can viscosity B coefficent value in Real-Time Monitoring course of dissolution, preferably, viscosity meter 3 of the present utility model is piston type electromagnetic induction viscosity meter 3, its measuring accuracy is less than or equal to 2%, improves measuring stability and measuring accuracy.Because the utility model medium viscosity meter 3 will contact with the mixed solution 22 of the refrigerator oil in airtight container 5 and refrigeration working medium, therefore, as preferably, the 3rd preformed hole is arranged on the sidewall bottom of container cavity.
Preferably, as shown in figures 1 and 3, sampling system comprises on sampler 20 and the first communicating pipe 18 communicating pipe 18, first and is provided with the first valve 15; Top cover 5a is provided with the 4th preformed hole q, one end of the first communicating pipe 18 is communicated with the inside of airtight container 5 by the 4th preformed hole q, and the other end of the first communicating pipe 18 is communicated with sampler 20.When the temperature in airtight container 5 and pressure all reach requirement, open the first valve 15, now, the mixed solution 22 of well-mixed refrigerator oil and refrigeration working medium enters into sampler 20 by the first communicating pipe 18, thus realizes the object of sampling; After sampling, need to heat got sample, after process of weighing, calculated the solubleness of refrigeration working medium by the method for mass percent, which calculates simple, without the need to being calculated by volume, substantially increases measuring accuracy.
Preferably, sampler 20 is provided with charging aperture and discharging opening; Charging aperture was communicated with the first communicating pipe 18, and charging aperture place is provided with the second valve 19, and discharge outlet is provided with the 3rd valve 21.Second valve 19 and the 3rd valve 21 can control charging and the discharging of sampler 20 more accurately.Wherein, the volume of sampler 20 is unsuitable excessive or too small, and volume is excessive, and easily cause the loss of material, volume is too small, then can reduce the degree of accuracy of test result, and more preferably, the volume of sampler 20 is 50ml ~ 100ml.
Continue see Fig. 1 and Fig. 3, coolant injection system of the present utility model comprises for providing the refrigerant source 9 of refrigeration working medium and the second communicating pipe (figure does not mark), is provided with the 4th valve 10 second communicating pipe; Top cover 5a is provided with the 5th preformed hole y, one end of the second communicating pipe is communicated with the inside of airtight container 5 by the 5th preformed hole y, and the other end of the second communicating pipe is communicated with refrigerant source 9.
In addition, pumped vacuum systems comprises vacuum pump 8 and third connecting pipe (figure does not mark), third connecting pipe is provided with the 5th valve 11; Top cover 5a is provided with the 6th preformed hole p, one end of third connecting pipe is communicated with the inside of airtight container 5 by the 6th preformed hole p, and the other end of third connecting pipe is communicated with vacuum pump 8.Preferably, in order to reduce the number of openings on installing space and top cover 5a, as shown in Figure 3, the 5th preformed hole y and the 6th preformed hole p is for being same preformed hole, and namely the second communicating pipe and third connecting pipe share a preformed hole.
As a kind of embodiment, as shown in figures 1 and 3, stirring system comprises rabbling mechanism 13 and driving mechanism (not shown), and driving mechanism rotates for driving rabbling mechanism 13, and then plays beating action; Wherein, top cover 5a is provided with the 7th preformed hole k, it is inner that rabbling mechanism 13 extend into airtight container 5 by the 7th preformed hole k.Preferably, rabbling mechanism 13 is stirring rod, and driving mechanism is motor.
As preferably, all preformed hole places of the present utility model are provided with sealing gasket, to increase the sealing property of packoff.It should be noted that, in other embodiments, all preformed holes all can be arranged on the sidewall of airtight container 5.
The proving installation structure of solubleness of the present utility model and viscosity is simple, easy to operate, safe and reliable, the content of the refrigeration working medium that can not only accurately dissolve in test for freeze machine oil, can also the viscosity of the mixed solution 22 of refrigerator oil and refrigeration working medium under testing high voltage state.Viscosity test and solubleness test are integrated in one by the utility model, can carry out the test of viscosity and solubleness simultaneously, can realize the Real-Time Monitoring of viscosity, simplify testing procedure, improve test speed.Meanwhile, the proving installation scope of application of solubleness of the present utility model and viscosity is comparatively wide, and the pressure limit that can test is 0MPa ~ 7MPa, and temperature range is-60 DEG C ~ 100 DEG C.Utilize test result of the present utility model, dissolubility and the viscosity of refrigerator oil and refrigeration working medium can be understood more clearly, emulate in conjunction with computing machine fluid, the friction and wear of compressor pump part can be analyzed, and then select suitable refrigerator oil and refrigeration working medium, ensure the operation reliably and with long-term of compressor.
When utilizing the proving installation of solubleness of the present utility model and viscosity to test, comprise the following steps:
The refrigerator oil of certain mass is injected in airtight container 5;
Airtight container 5 is sealed and vacuumizes;
Refrigeration working medium is injected in airtight container 5;
Constant temperature system is adjusted to preset temperature;
Stir refrigerator oil, refrigerator oil and refrigeration working medium are fully mixed, and tests the temperature and pressure in airtight container 5;
When the temperature stabilization in airtight container 5 is at preset temperature, and pressure in airtight container 5 when remaining unchanged within >=30min time, viscosity test system testing is utilized to state the viscosity of the mixed solution 22 of refrigerator oil and refrigeration working medium, meanwhile, sampling system is utilized to gather the mixed solution 22 of refrigerator oil in closed container and refrigeration working medium;
Weigh the quality of the mixed solution that sampling system gathers;
Mixed solution sampling system gathered heats, and the refrigeration working medium in mixed solution is fully volatilized, residue refrigerator oil, then is weighed by remaining refrigerator oil;
By the massfraction that refrigeration working medium under formula S=100%* (m1-m2)/m1 calculating preset temperature dissolves in refrigerator oil, wherein, the quality of the mixed solution that m1 gathers for sampling system, m2 is the quality of remaining refrigerator oil.
It should be noted that, when weighing the quality of the mixed solution that sampling system gathers, be generally indirect weighing, namely first weigh together with the container holding mixed solution, deduct the quality of the container holding mixed solution again, just can obtain the quality of mixed solution, therefore, when the quality of the container holding mixed solution is unknown, the quality of the container holding mixed solution is weighed by general needs in advance.
The utility model achieves the synchronism detection of solubleness and viscosity, can improve test speed and measuring accuracy, adopts mass ratio to calculate the solubleness of refrigeration working medium simultaneously, compared with volumescope algorithm in the past, without the need to carrying out the measurement of volume, test is simple, and further increases measuring accuracy.
In order to can clearer explanation the utility model, below for the refrigerator oil of certain model (being designated as 1# refrigerator oil), the research solubleness of R410A refrigeration working medium at 60 DEG C in 1# refrigerator oil and the viscosity of the mixed solution of the two.
Embodiment 1
(1) preliminary work
A, each pipeline cleaning the proving installation of solubleness of the present utility model and viscosity, each valve and airtight container 5;
B, take the quality of sampler 20, be designated as m;
C, in airtight container 5, inject the 1# refrigerator oil of 500ml, airtight container 5 is sealed;
D, closedown the 3rd valve 21 and the 4th valve 10, open the 5th valve 11, first valve 15 and the second valve 19, vacuumize 30min, the vacuum tightness in airtight container 5 and each pipeline is reached 10
-2whether below Pa, stops vacuumizing, static 5min, observe vacuum tightness and change, if there is rising, then checks each pipeline and thread seal part, repeat to vacuumize, if vacuum tightness is constant, then enter next step;
E, close the second valve 19, first valve 15, the 5th valve 11 successively, open the 4th valve 10, be injected in airtight container 5 through R410A refrigeration working medium, inject a certain amount of after, close the 4th valve 10;
F, the temperature arranged in bath 1 are 60 DEG C, select silicone oil as heat transfer medium 2, are put on the bracing frame 6 of bath 1 by airtight container 5, make heat transfer medium 2 flood more than 85% of airtight container 5 volume;
G, unlatching stirring system, setting stirring rate is 100r/min, and refrigerator oil and refrigeration working medium are fully mixed.
(2) viscosity test
When temperature sensor 14 in a, container to be sealed 5 is stabilized in 60 DEG C, observe the numerical value of pressure display instrument table 16, pressure displayed value from large to small, again by little slow increase, after pressure display instrument table 16 displayed value stablizes 30min, record the pressure value P (MPa) in now airtight container 5 and temperature T (DEG C);
B, utilize viscosity collector 7 to gather R410A refrigeration working medium and 1# refrigerator oil at the viscosity number of 60 DEG C, when data to be collected fluctuate within 2%, record this viscosity number η (mm
2/ s);
(3) sample
Temperature sensor 14 in a, container to be sealed 5 is stabilized in 60 DEG C, and pressure display instrument table 16 displayed value stablizes 30min;
B, open the first valve 15 and the second valve 19 successively, under pressure, the mixed solution (mixed solution of R410A refrigeration working medium and 1# refrigerator oil) in airtight container 5 enters into sampler 20 by the first communicating pipe 18;
C, close the second valve 19 and the first valve 15 successively, sampler 20 is taken off, completes sampling;
It should be noted that, step (2) viscosity test and step (3) sample can carry out simultaneously;
(4) Calculation of Solubility
A, take the gross mass of sampler 20 and mixed solution wherein, be designated as M;
B, sampler 20 uprightly to be placed, and make the 3rd valve 21 upward, and open the 3rd valve 21, the aperture of valve controls about 5%;
C, sampler 20 is placed in drying box, at 80 DEG C, toasts 120min, after the R410A refrigeration working medium in device 20 to be sampled fully volatilizees, take the quality of sampler 20 and 1# refrigerator oil wherein, be designated as M1;
D, utilize formula S=100%* (M-M1)/(M-m), obtain the dissolving massfraction of R410A refrigeration working medium in 1# refrigerator oil.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (11)
1. the proving installation of a solubleness and viscosity, it is characterized in that, comprising the airtight container (5) of the mixed solution (22) for holding refrigerator oil to be tested and refrigeration working medium, constant temperature system, pumped vacuum systems, pressure testing system, system for detecting temperature, viscosity test system, sampling system, coolant injection system and stirring system;
Described airtight container (5) is arranged in described constant temperature system, and described pumped vacuum systems, described pressure testing system, described system for detecting temperature, described viscosity test system, described sampling system, described coolant injection system are all communicated with the inside of described airtight container (5) with described stirring system.
2. the proving installation of solubleness according to claim 1 and viscosity, it is characterized in that, described airtight container (5) comprises top cover (5a), diapire (5g), sidewall (5e) and ring flange (5d);
Described sidewall (5e) is around in the upper container cavity forming one end open of described diapire (5g);
The cross-sectional area of described top cover (5a) is greater than the aperture area of described container cavity, and described top cover (5a) covers the openend of described container cavity;
Described ring flange (5d) is fixedly installed on the openend of described container cavity, the upper surface of described ring flange (5d) and the lower surface close contact of described top cover (5a), and described ring flange (5d) and described top cover (5a) removably connect.
3. the proving installation of solubleness according to claim 2 and viscosity, is characterized in that, the upper surface of described ring flange (5d) is provided with groove, and the xsect of described groove is annular, and described container cavity is around in wherein by described groove;
Be provided with O-ring seal (5c) in described groove, described ring flange (5d) and described top cover (5a) are sealed by described O-ring seal (5c).
4. the proving installation of solubleness according to claim 2 and viscosity, is characterized in that, described constant temperature system comprises bath (1), heat transfer medium (2) and bracing frame (6);
Described heat transfer medium (2) is contained in described bath (1);
Support frame as described above (6) is fixed in described bath (1), and support frame as described above (6) is for supporting described airtight container (5).
5. the proving installation of solubleness according to claim 4 and viscosity, is characterized in that, support frame as described above is the tubular structure all do not bound up and down, and described tubular structure is made up of the steel plate of hollow out;
The height of described tubular structure is greater than the height of described airtight container (5), and described airtight container (5) is supported on described tubular structure by described ring flange (5d).
6. the proving installation of solubleness according to claim 2 and viscosity, it is characterized in that, described pressure testing system comprises pressure transducer (12) and pressure display instrument table (16), and described pressure transducer (12) is electrically connected with described pressure display instrument table (16); Described top cover (5a) is provided with the first preformed hole t, described pressure transducer is communicated with the inside of described airtight container (5) by described first preformed hole t;
Described system for detecting temperature comprises temperature sensor (14) and temperature display meter (17), and described temperature sensor (14) is electrically connected with described temperature display meter (17); Described top cover (5a) is provided with the second preformed hole j, described temperature display meter (17) is communicated with the inside of described airtight container (5) by described second preformed hole j.
7. the proving installation of solubleness according to claim 2 and viscosity, it is characterized in that, described viscosity test system comprises viscosity meter (3), viscosity meter connecting line (4) and viscosity collector (7), and described viscosity meter (3) is connected with described viscosity collector (7) by described viscosity meter connecting line (4);
The sidewall of described container cavity is provided with the 3rd preformed hole, described viscosity meter (3) is arranged in described 3rd preformed hole, and described viscosity meter (3) is communicated with the inside of described airtight container (5) by described 3rd preformed hole.
8. the proving installation of solubleness according to claim 2 and viscosity, is characterized in that, described sampling system comprises sampler (20) and the first communicating pipe (18);
Described first communicating pipe (18) is provided with the first valve (15), (20) are provided with charging aperture and discharging opening to described sampler, described charging aperture place is provided with the second valve (19), and described discharge outlet is provided with the 3rd valve (21);
Described top cover (5a) is provided with the 4th preformed hole q, one end of described first communicating pipe is communicated with the inside of described airtight container (5) by described 4th preformed hole q, and the other end of described first communicating pipe (18) is communicated with described charging aperture.
9. the proving installation of solubleness according to claim 2 and viscosity, it is characterized in that, described coolant injection system comprises refrigerant source (9) and the second communicating pipe for providing refrigeration working medium, is provided with the 4th valve (10) described second communicating pipe; Described top cover (5a) is provided with the 5th preformed hole y, one end of described second communicating pipe is communicated with the inside of described airtight container (5) by described 5th preformed hole y, and the other end of described second communicating pipe is communicated with described refrigerant source (9);
Described pumped vacuum systems comprises vacuum pump (8) and third connecting pipe, described third connecting pipe is provided with the 5th valve (11); Described top cover (5a) is provided with the 6th preformed hole p, one end of described third connecting pipe is communicated with the inside of described airtight container (5) by described 6th preformed hole p, and the other end of described third connecting pipe is communicated with described vacuum pump (8).
10. the proving installation of solubleness according to claim 9 and viscosity, is characterized in that, described 5th preformed hole y and described 6th preformed hole p is same preformed hole.
The proving installation of 11. solubleness according to any one of claim 1 ~ 10 and viscosity, is characterized in that, described airtight container (5) bear pressure >=10MPa.
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| CN201520060017.6U CN204479433U (en) | 2015-01-28 | 2015-01-28 | The proving installation of solubleness and viscosity |
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