CN110261099A - A kind of Subzero valve intercooling cycle experimental system - Google Patents

A kind of Subzero valve intercooling cycle experimental system Download PDF

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Publication number
CN110261099A
CN110261099A CN201910538195.8A CN201910538195A CN110261099A CN 110261099 A CN110261099 A CN 110261099A CN 201910538195 A CN201910538195 A CN 201910538195A CN 110261099 A CN110261099 A CN 110261099A
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pipe
valve
subzero valve
subzero
cryogenic
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沈圣华
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Jiangsu Billion Valve Ltd By Share Ltd
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Jiangsu Billion Valve Ltd By Share Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts
    • G01M13/003Machine valves

Abstract

The invention discloses a kind of Subzero valve intercooling cycle experimental system, reservoir, low-temperature storage tank including stockpiling for cryogenic media dynamic are connected with reservoir the valve clamping platform and cryogenic pump cycle subsystem of the low-temperature storage tank for fluid infusion, Subzero valve to be measured, fixed Subzero valve;The cryogenic pump cycle subsystem connection reservoir and Subzero valve simultaneously realize that cryogenic media passes through Subzero valve inside and circulating cooling.The present invention is domestic first set Subzero valve intercooling cycle pilot system, the temperature gradient opposite with valve actual condition for fundamentally solving the problems, such as that outer cold process low-temperature test generates causes sealing pair to fail, while can really react the properties of Subzero valve;Effective verifying means are provided for the production domesticization of the fields cryogenic valve such as liquefied natural gas, to foreign technology monopolization is broken, promote the technical progress of industry meaning great.

Description

A kind of Subzero valve intercooling cycle experimental system
Technical field
The present invention relates to valve low temperature test system, specifically a kind of Subzero valve intercooling cycle experimental system.
Background technique
Subzero valve refers to that media operation temperature in -29 DEG C of valves below, is widely used in space division, ethylene petrochemical industry, liquid Change fields such as natural gas (LNG).In recent years, with the adjustment of national energy structure, the large scale investment of Large LNG receiving station is built And if entering operation successively.Subzero valve is extremely important pipe control equipment, the master used in Large LNG receiving station Want feature to have: (1) parameter is high: about -162 DEG C of its running temperature, -196 DEG C of temperature of examination, Class900 or Class1500 or less; (2) range is wide: the nominal diameter NPS(Nominal Pipe Size of valve connection end) 3/4~NPS 42 or higher;(3) valve Kind is various: including low-temperature brake valve, shut-off valve, ball valve, butterfly valve, check-valves, regulating valve, safety valve etc., but wherein upper-mounting type ball valve Account for about half;(4) operating condition is poor: the equal long-term operation of Subzero valve, and working condition is severe!
Currently, manufacturing firm, the cryogenic valve country is a lot of, LNG has been included in production domesticization research and development with cryogenic valve.For a long time with Come, the manufacture of cryogenic valve, the final inspection test of valve material and valve must all be completed under ultra low temperature state. Standard performed by valve cryogenic test is mainly at present: GB/T24925-2010, BS 6364:1984, MESC SPE 77/ 200 etc..Valve cryogenic test is the performance for examining Subzero valve under worst cold case environment, to make to Subzero valve overall performance It evaluates out.Low-temperature test the main contents include: examine the sealing situation of opening and closing element, sealing pair etc.;The operation of complete machine operating condition with pressure Performance etc..Detection parameters have: valve body, valve deck, valve rod, flap, stuffing-box, refrigerant and environment temperature;The moment at valve export end Slip, accumulation leakage rate and average slip;Test(ing) medium pressure extremely change conditions.Test(ing) medium is generally helium or mixed Helium nitrogen.
And the valve cryogenic test method that current test stone and data is recommended nearly all is using outer cold process, i.e. benefit Heat is extracted outside tested valve with refrigerant, reduces valve temperature.However, using outer cold process to Subzero valve meeting in cooling A temperature gradient opposite with actual condition is generated, by taking cryogenic ball valve as an example, valve body and valve deck are quickly cooled down from outside, are generated Volume contraction, and sphere, valve seat are not yet completely cold at this time, especially because the heat-blocking action of nonmetallic valve seat, further prolongs Heat transfer process is delayed.At this point, original cooperation is changed, the nonmetallic sealing ring of nonmetallic valve seat or stack valve seat may It will receive excessive compression, cause each component actuation difficult, we tentatively claim this phenomenon are as follows: " low temperature locking "." low temperature locking " Nonmetallic valve seat can be made to generate permanent deformation, also, the thermal expansion coefficient of the nonmetallic materials such as polytetrafluoroethylene (PTFE) is significantly larger than Metal material, with the gradually balance of inside and outside temperature, internals are shunk, and seal pressure is reduced or disappeared, sealing pair failure!
In addition, even if using outer cold process low-temperature test qualification valve products, since in actual condition, cryogenic media is out of valve Portion is flowed through, and external contact room temperature or comparative high temperature environment, the temperature gradient for being unfavorable for valve seal may exist always, valve The temperature levels of gate housing are higher than internals, and the seal pressure of pre-add can decrease or disappear when assembly, it would still be possible to will cause close Envelope failure!
For the above reasons, it is necessary to LNG be improved with cryogenic valve low-temperature test system and device, design is " a kind of low Warm valve intercooling cycle experimental system ", to be truly reflected the comprehensive performance of the Subzero valve under actual working conditions.
Summary of the invention
It is lost in order to avoid generating sealing pair caused by the temperature gradient opposite with actual condition using outer cold process low-temperature test Effect problem, is truly reflected the comprehensive performance of the Subzero valve under actual working conditions, and the present invention proposes in a kind of Subzero valve SAPMAC method experimental system.Specific technical solution is as follows:
A kind of Subzero valve intercooling cycle system, including the reservoir, tested low for storing and recycling for cryogenic media scene Warm valve, the valve clamping platform for fixing Subzero valve, connection reservoir and Subzero valve simultaneously realize cryogenic media low Hydronic cryogenic pump cycle subsystem and pressure charging system in warm valve.
Subzero valve intercooling cycle system above-mentioned, the cryogenic pump cycle subsystem include cryogenic pump, pump suction pipe, pump Discharge pipe, the high indentation pipe for being connected to Subzero valve entrance, the high blow-off pipe and return pipe for being connected to Subzero valve outlet; The liquid outlet of pump suction pipe one end connection reservoir, the other end connect the entrance of cryogenic pump;Described pump main one end connects Connect the outlet of cryogenic pump, the high indentation pipe of other end connection;Described return pipe one end connects high blow-off pipe, and the other end passes through reservoir Liquid return hole introduce reservoir meteorological spatial.
Subzero valve intercooling cycle system above-mentioned, the cryogenic pump cycle subsystem further include muffler, unloaded pipe and Promptly discharge pipe;The gas returning port of muffler one end connection cryogenic pump, the other end introduce the gas-phase space of reservoir;The sky Pipe connection pump main and return pipe are carried, the pipe that promptly discharges connects high blow-off pipe.
Subzero valve intercooling cycle system above-mentioned, the pressure charging system include pressurized gas, Pneumatic booster pump and pressurization Control assembly;The high indentation pipe of gas indentation in pressurized gas is pressurized cooling medium by the Pneumatic booster pump;The pressurization Control assembly is used to operate booster pump according to the pressure of pipeline.
Subzero valve intercooling cycle system above-mentioned, the reservoir are the double-deck open metal knot equipped with heat preservation upper cover Structure, the high heat preservation polymeric foamable material of the interior filling of interlayer, and the bridge cut-off that conducts heat is set between its inside and outside wall;It is additionally provided with inside it High level alarm, low liquid level warning device and the resistance vapour plate for preventing return-air.
Subzero valve intercooling cycle system above-mentioned further includes cold for supplementing entire Subzero valve intercooling cycle system But the low-temperature storage tank of medium is connected with the fluid infusion of reservoir, and the low-temperature storage tank is preferably double-decked insulation, and it is pressed from both sides Layer vacuumizes and fills swelling perlite powder accumulation insulation, and the layer vacuum is preferably 1.2~1.8 Pa.
Preferably, the suction line, discharge pipe, high indentation pipe, high blow-off pipe, return pipe, muffler, unloaded pipe and promptly The vacuum heat-insulated pipe that pipe is double-layer structure is discharged, inner and outer pipe is preferably made of gapless stainless steel tube, and inner tube is outer Wall is alternate to be preferably wrapped around affixed radiation shield and spacer.
Subzero valve intercooling cycle system above-mentioned, the suction line, discharge pipe, high indentation pipe, high blow-off pipe, reflux Pipe, muffler, unloaded pipe and urgent discharge are equipped with regulating valve on the pipeline of pipe.
Preferably, Subzero valve intercooling cycle system above-mentioned, the model DBP2000-4000/ of cryogenic pump used 10, cold end model P610, transmission case model DR250, biserial stroke 45mm;The cryogenic media be liquid nitrogen, flow be 2000~ 4000L/h。
Preferably, Subzero valve intercooling cycle system above-mentioned, is also equipped with observing and controlling detection system, the observing and controlling monitoring system packet It includes the display instrument group being mounted on reservoir, low-temperature storage tank, Subzero valve and cryogenic pump cycle subsystem, remotely receive each instrument Table parameter and the calculating unit of calculation processing, with monitoring Subzero valve intercooling cycle system and the real-time shape of Subzero valve Condition.
The beneficial effects of the present invention are:
The present invention is that domestic first set Subzero valve intercooling cycle pilot system is tried for outer cold process using intercooling cycle Check system to Subzero valve carry out low temperature test, there are following advantages: 1) scientifically, realize to subversiveness the true of Subzero valve Real state verification experimental verification;2) comprehensive performance that is true and being comprehensively reflected Subzero valve, comprising: under the conditions of actual operating mode Sealing performance, profiling temperatures, operating characteristics, influence of pipeline construction condition etc.;3) really intuitively show low temperature Jie The flowing of matter controls situation;It 4) is pipeline construction, installation also provides a relatively actual verification platform.
Therefore, the present invention fundamentally solves the temperature opposite with valve actual condition that outer cold process low-temperature test generates The problem of gradient causes sealing pair to fail, while can really react the properties of Subzero valve;For LNG ultra-low temperature valves Door production domesticization provides effective verifying means, to foreign technology monopolization is broken, promotes the technical progress of industry meaning great.
Detailed description of the invention
Fig. 1 is to use Subzero valve intercooling cycle experimental system schematic diagram of the present invention;
Fig. 2 is to use Subzero valve intercooling cycle experimental system flow chart of the present invention;
Fig. 3 is to use Subzero valve intercooling cycle experimental system liquid storage slot structure schematic diagram of the present invention;
Fig. 4 is to use Subzero valve intercooling cycle experimental system three-dimensional effect diagram of the present invention.
In figure: 1, reservoir;101, liquid outlet;102, liquid return hole;103, fluid infusion;104, upper cover is kept the temperature;105, it conducts heat Bridge cut-off;106, high level alarm;107, low liquid level warning device;108, vapour plate is hindered;2, low-temperature storage tank;3, Subzero valve;4, valve Door clamping platform;5, cryogenic pump cycle subsystem;50, cryogenic pump;501, pump suction pipe;502, pump main;503, high indentation Pipe;504, high blow-off pipe;505, return pipe;506, muffler;507, unloaded pipe;508, pipe is promptly discharged;6, regulating valve;7, increase Pressure system;701, pressurized gas;8, observing and controlling monitoring system;801, display instrument group is acquired;802, host computer.
Specific embodiment
Below in conjunction with specific embodiment and attached drawing, technical solution of the present invention is clearly and completely described:
A kind of Subzero valve intercooling cycle system, referring to figs. 1 to Fig. 4, including the storage for storing and recycling for cryogenic media scene Liquid bath 1, tested Subzero valve 3, the valve clamping platform 4 for fixing Subzero valve 3, connection reservoir 1 and Subzero valve 3 And realize cryogenic media hydronic cryogenic pump cycle subsystem 5 and pressure charging system 7 in Subzero valve 3.In reservoir 1 Cryogenic media is passed through by cryogenic pump cycle subsystem 5 and pressure charging system 7 to be flowed through inside Subzero valve 3, from inside to low temperature valve Door 3 is cooling, to really simulate valve operating condition, reaches the various performances of accurate response Subzero valve 3.
Subzero valve intercooling cycle experimental system described in the present embodiment, reservoir 1 are used for low temperature when test cycle and are situated between The dynamic of matter stockpiles, and structure is as shown in figure 3, the reservoir 1 takes expanded foam adiabatic method, for the double-deck open metal knot Structure, and equipped with upper cover 104 is kept the temperature, high heat preservation polymeric foamable material is filled in interlayer, and heat transfer is set between its inside and outside wall and is broken Bridge 105 prevents " heat transfer " generated with gusset.In order to guarantee net positive sucking pressure, cryogenic pump necessary to cryogenic pump 50 is run In 50 operational process, certain liquid level must assure that in reservoir 1, therefore the inside of the reservoir 1 is configured with high liquid level Alarm 106, low liquid level warning device 107 are monitored liquid level in slot, when coolant liquid is lower than certain liquid level, low liquid level alarm Device 107 is alarmed, and the cooling medium in low-temperature storage tank 2 is supplemented in reservoir by fluid infusion 103, until liquid level reach a certain height When, high liquid level alarm device 106 sounds an alarm stopping fluid infusion, to realize the function of automatic liquid supply.In addition, 1 feed liquor of reservoir Using upper feed liquor mode, in reservoir 1 be provided with resistance vapour plate 108, avoid in fluid infusion, return-air, reflux course evaporate vapour into Enter in the suction line 501 of pump and cavitation erosion is generated to liquid nitrogen pump 50.
In general, the cooling medium of valve experiment needs professional businessman to provide, and maintains the continuous service of Cryo Equipment Continuous fluid infusion is also carried out, therefore, low-temperature storage tank 2 and law temperature joining pipeline are the required configurations of device.Low-temperature storage tank 1 can be used In the conveying of storage and maintenance certain pressure to the cooling medium long period.Low-temperature storage tank 2 described in the present embodiment is by special Industry producer produces according to professional standard, using vacuum-powders insulation mode, is designed as double-decked insulation, interlayer vacuum-pumping is simultaneously filled out Fill swelling perlite powder accumulation insulation, thermal coefficient≤0.03W/(mK), layer vacuum is 1.2~1.8Pa, is held by effective Product 10m3It calculates, static Daily boil-off-rate is lower than 0.55%, and the low-temperature storage tank 2 need to be tieed up equipped with over-voltage security protection and pressure Hold device and necessary indicating meter.
In the present embodiment, the cryogenic pump cycle subsystem 5 is the emphasis of present system, is cold in entire Subzero valve The basis of circulation experiment system.In addition to fully considering the necessary means for preventing cryogenic pump 50 from cavitating, it is also contemplated that load and zero load Under parameter optimization and tested products adaptability and operational safety.The operation consumption of cryogenic system is mainly due to heat transfer The consumption of bring cooling capacity, the maintenance low temperature including equipment, the pre-cooling consumption of pipeline and the cooling of workpiece consumption and whole system Consumption.Wherein, the consumption of workpiece is to cool down to workpiece and maintain rationally to consume necessary to low temperature, and the consumption of equipment, pipeline exists It has been largely fixed the working efficiency of system.
In the present embodiment, the cryogenic pump cycle subsystem 5, referring to Fig. 2, including cryogenic pump 50, pump suction pipe 501, Pump main 502, the high indentation pipe 503 for being connected to 3 entrance of Subzero valve, the high blow-off pipe for being connected to the outlet of Subzero valve 4 504 and return pipe 505;The liquid outlet 101 of 501 one end of suction line connection reservoir 1, the other end connect cryogenic pump 50 Entrance;The outlet of 502 one end of discharge pipe connection cryogenic pump 50, the high indentation pipe 503 of other end connection;The return pipe The 505 high blow-off pipes 504 of connection, the other end introduce the gas-phase space of reservoir 1 by the liquid return hole 102 of reservoir 1, and realizing will storage Cooling medium in liquid bath 1 flows the intercooling cycle process for reservoir 1 after being pumped into Subzero valve 3 to be measured again.
In the present embodiment, the cryogenic pump cycle subsystem 5 further includes muffler 506, unloaded pipe 507 and promptly discharges pipe 508;The gas returning port of 506 one end of muffler connection cryogenic pump 50, the other end introduce the gas-phase space of reservoir 1;The sky The connection of pipe 507 connection pump main 502 and return pipe 505 are carried, it is not cooling to Subzero valve 3, that is, it is cooling to be not loaded with valve.It is described Promptly discharging pipe 508 connects high blow-off pipe 504, with the cooling medium being vented in Subzero valve 3.The suction line 501, discharge pipe 502, high indentation pipe 503, high blow-off pipe 504, return pipe 505, muffler 506, unloaded pipe 507 and the pipe for promptly discharging pipe 508 Road is equipped with regulating valve 6, to adjust the pressure and temperature of entire Subzero valve intercooling cycle experimental system.
Subzero valve intercooling cycle experimental system described in the present embodiment, the suction line 501, discharge pipe 502, high indentation Pipe 503, high blow-off pipe 504, return pipe 505, muffler 506, unloaded pipe 507 and that promptly discharge that pipe 508 is all made of is Gao Zhen Empty insulated piping, adiabatic method use vacuum multi-layer insulation form, i.e., vacuum pipe be double-layer structure, inner and outer pipes all use it is seamless not Rust steel pipe is made, the affixed radiation shield of the alternate winding of outer wall of inner tube and spacer.When cooling medium is flowed through from pipeline, outside pipeline Wall is bordering on room temperature in the case where not wrapping up any substance, can be touched with hand.Outer masterpiece should be avoided during routine use It is hit with hard object.After high-vacuum insulation technology, the loss of refrigeration capacity of cryogenic piping can drop to very low degree, and shape Beautiful, easy to maintain, pipeline outer wall can maintain room temperature level, without the heat preservation safeguard procedures of additional complexity.
In addition, cavitation damage is that a kind of highest factor of damage ratio occurs for cryogenic pump 50 during intercooling cycle, work as Jie When matter is the liquid that boiling temperature is lower than room temperature, cavitation easily occurs.Cryogenic pump 50 is real as Subzero valve intercooling cycle Cryogenic liquid will be also discharged in addition to guarantee net positive suction head NPSH necessary to running in the core component of check system in time The steam bubble that heat absorption vaporization is formed.In the present embodiment, 50 cavitation-preventive measure of liquid nitrogen pump is in addition to guaranteeing 50 net positive suction head of liquid nitrogen pump The resistance vapour plate being arranged in the natural-drop of NPSH and live reservoir 1 above-mentioned, the in addition suction line 501 of cryogenic pump 50 and suction Enter the full encapsulated vacuum insulated design of 6 integration of regulating valve installed on pipe 501, and the inlet vapor-liquid separation of cryogenic pump 50 is set Meter.
Subzero valve intercooling cycle experimental system described in the present embodiment, used cooling medium is liquid nitrogen, described low The model DBP2000-4000/10, cold end model P610, transmission case model DR250 of temperature pump 50, biserial stroke are 45mm;The flow of liquid nitrogen is 2000~4000L/h, and 0.02~0.6MPa of inlet pressure, maximum outlet pressure is 1.0MPa, input Power supply 380V, 3 phases, 50Hz, 125~1250rpm of motor speed, power 75KW.
Under normal pressure, liquid nitrogen temperature is -196 DEG C, and 1 cubic metre of liquid nitrogen can be expanded to 696 cubic metres 21 °C of pure gas State nitrogen, critical-temperature are -147 DEG C, critical pressure 3.40MPa.In order to study the valve performance test under simulation real working condition, On the basis of using for reference the critical helium supercharging technology of rocket and spacecraft, critical Nitrogen boost pressure servo control technique is had developed, Pressure charging system 7 is added to obtain to this Subzero valve intercooling cycle experimental system comprising pressurized gas 701, Pneumatic booster pump and Intelligence control system;The Pneumatic booster pump is core drive source and the compressible drive of pressure charging system 7, by pressurized gas 701 Interior room temperature helium or mixed helium nitrogen indentation high pressure, which enter in pipe 503, is pressurized liquid nitrogen.The intelligence control system includes pneumatic needle Type valve and control pipe network, make pilot operated pneumatic needle valve by solenoid valve block, complete the control to control pipe network, switch and Operation control to Pneumatic booster pump.This pressure charging system 7 can realize whole far distance automatic operation, without complicated artificial pipeline Switching, avoids the possible danger of execute-in-place;And it is realized to liquid nitrogen with lower equipment manufacturing cost not less than 25MPa Pressurization, meanwhile, realize the detection of low, tiny leakage rate.
In order to monitor Subzero valve intercooling cycle experimental system, and real time reaction Subzero valve 3 is in the case where simulating working condition, Valve deck lengthens the profiling temperatures of neck and drain pan, this Subzero valve intercooling cycle experimental system utilizes wireless transparent transmission technology, The observing and controlling detection system 8 based on Internet of Things communication is arranged, which includes including being mounted on reservoir 1, low temperature At acquisition display instrument group 801 and long-range reception parameter and calculating on storage tank 2, Subzero valve 3 and cryogenic pump cycle subsystem 5 The host computer 802 of reason;The acquisition display instrument group 801 includes being responsible for the PLC of analog acquisition and discrete control, important mould Analog quantity is sent to intelligent digital display instrument, each instrument real-time display parameter to be monitored by sensor parallel input.Host computer 802 is straight It connects and carries out both-way communication with PLC, and analysis data are calculated by monitoring analysis software, realize realtime curve, automatically record, Field print and long-range monitoring, as shown in Figure 1.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive.Although in addition, it should be understood that The present specification is described in terms of embodiments, but not only includes one technical solution, this narrating mode of specification It is merely for the sake of clarity, the skilled in the art should refer to the specification as a whole, the technical solution in embodiment It can be properly combined, form other embodiments that can be understood by those skilled in the art.

Claims (10)

1. a kind of Subzero valve intercooling cycle system, it is characterised in that: including the storage for storing and recycling for cryogenic media scene Liquid bath (1), tested Subzero valve (3), the valve clamping platform (4) for fixing Subzero valve (3), connection reservoir (1) With Subzero valve (3) and realize cryogenic media in Subzero valve (3) hydronic cryogenic pump cycle subsystem (5) and pressurization System (7).
2. Subzero valve intercooling cycle system according to claim 1, it is characterised in that: the cryogenic pump cycle subsystem It (5) include cryogenic pump (50), pump suction pipe (501), pump main (502), the high indentation pipe for being connected to Subzero valve (3) entrance (503), the high blow-off pipe (504) and return pipe (505) of Subzero valve (4) outlet are connected to;The pump suction pipe (501) One end connects the liquid outlet (101) of reservoir (1), and the other end connects the entrance of cryogenic pump (50);The pump main (502) one The outlet of end connection cryogenic pump (50), the high indentation pipe (503) of other end connection;Return pipe (505) one end connection is high to be extruded It manages (504), the other end introduces the meteorological spatial of reservoir (1) by the liquid return hole (102) of reservoir (1).
3. Subzero valve intercooling cycle system according to claim 1 or 2, it is characterised in that: cryogenic pump cycle System (5) further includes muffler (506), unloaded pipe (507) and promptly discharges pipe (508);Muffler (506) one end connection The gas returning port of cryogenic pump (50), the other end introduce the gas-phase space of reservoir (1);The unloaded pipe (507) connects pump main (502) and return pipe (505), described promptly discharge pipe (508) connect high blow-off pipe (504).
4. Subzero valve intercooling cycle system according to claim 1, it is characterised in that: the pressure charging system (7) includes Pressurized gas (701), Pneumatic booster pump and pressurization control component;The Pneumatic booster pump is by the gas in pressurized gas (701) The high indentation pipe (503) of indentation is pressurized cooling medium;The pressurization control component is used to grasp booster pump according to the pressure of pipeline Make.
5. Subzero valve intercooling cycle system according to claim 1, it is characterised in that: the reservoir (1) be equipped with The double-deck open metal structure of upper cover (104) is kept the temperature, the high heat preservation polymeric foamable material of filling in interlayer, and its inside and outside wall Between setting heat transfer bridge cut-off (105);It is additionally provided with high level alarm (106), low liquid level warning device (107) and prevents inside it The resistance vapour plate (108) of return-air.
6. Subzero valve intercooling cycle system according to claim 1, it is characterised in that: further include for entire low temperature Valve intercooling cycle system supplements the low-temperature storage tank (2) of cooling medium, is connected with the fluid infusion (103) of reservoir (1), described Low-temperature storage tank (2) is double-decked insulation, and its interlayer vacuum-pumping and fills swelling perlite powder accumulation insulation, and the interlayer is true Reciprocal of duty cycle is 1.2~1.8Pa.
7. Subzero valve intercooling cycle system according to claim 2 or 3, it is characterised in that: the suction line (501), Discharge pipe (502), high indentation pipe (503), high blow-off pipe (504), return pipe (505), muffler (506), unloaded pipe (507) and The vacuum heat-insulated pipe that pipe (508) is double-layer structure promptly is discharged, inner and outer pipe is all made of gapless stainless steel tube and is made, and The affixed radiation shield of the alternate winding of the outer wall of inner tube and spacer.
8. Subzero valve intercooling cycle system according to claim 2 or 3, it is characterised in that: the suction line (501), Discharge pipe (502), high indentation pipe (503), high blow-off pipe (504), return pipe (505), muffler (506), unloaded pipe (507) and It promptly discharges and is equipped with regulating valve (6) on the pipeline of pipe (508).
9. Subzero valve intercooling cycle system according to claim 2, it is characterised in that: the model of the cryogenic pump (50) For DBP2000-4000/10, cold end model P610, transmission case model DR250, biserial stroke 45mm;The cryogenic media is liquid Nitrogen, flow are 2000~4000L/h.
10. Subzero valve intercooling cycle system according to claim 1, it is characterised in that: be also equipped with observing and controlling detection system (8), which includes being mounted on reservoir (1), low-temperature storage tank (2), Subzero valve (3) and cryogenic pump cycle Display instrument group (801) on subsystem (5), the calculating unit (802) for remotely receiving each meter parameter and calculation processing, with prison Survey the real time status of monitoring Subzero valve intercooling cycle system and Subzero valve (3).
CN201910538195.8A 2019-06-20 2019-06-20 A kind of Subzero valve intercooling cycle experimental system Pending CN110261099A (en)

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