CN105258258A - Data center air conditioning system based on liquefied natural gas (LNG) cold energy application and application method thereof - Google Patents

Abstract

The invention relates to the field of air conditioning systems, in particular to a data center air conditioning system based on liquefied natural gas (LNG) cold energy application. The data center air conditioning system comprises an LNG storage tank, a first heat exchanger and a second heat exchanger. The second heat exchanger is installed at a data center. The data center air conditioning system is characterized in that the system further comprises high-temperature refrigerant storage tanks and low-temperature refrigerant storage tanks, the LNG storage tank is connected with the first heat exchanger, the first heat exchanger is connected with the high-temperature refrigerant storage tanks and the low-temperature refrigerant storage tanks, and the high-temperature refrigerant storage tanks and the low-temperature refrigerant storage tanks are connected with the second heat exchanger. The invention provides the data center air conditioning system utilizing the LNG cold energy and being capable of remarkably decreasing the power usage effectiveness (PUE) value of the data center and an LNG cold energy application method for the data center air conditioning system so that low energy consumption of the data center air conditioning system can be achieved.

Description

Based on LNG cold applicable data center air-conditioning system and application process thereof

Technical field

The present invention relates to air-conditioning system field, particularly relate to a kind of application LNG cold energy, can the air-conditioning system that uses of the heart in the data.

Background technology

Along with the policy of country's " science and technology power, industry are made the country prosperous " is implemented further, IT infrastructure service (cloud computing service platform), as the same with the traditional infrastructure auxiliary facility such as water, electricity, coal, becomes one of complete sets of basic equipment attracting domestic and international all trades and professions investor to enter.The development of following all Internet enterprises, all be unable to do without the support of cloud computing common platform and green data center.

Green data center, refer to the information technoloy equipment in data center module, heating, distribution system, safety-protection system, monitoring, illumination and electric etc. can obtain the synthesis result maximizing energy efficiency and minimize ambient influnence, the trend of future development, especially the arrival of cloud computing epoch and application, accelerates and facilitates large data, large center, the arrival in large storage epoch.Weighing the most important index of green data center is PUE, PUE=data center total energy consumption/information technoloy equipment energy consumption.It has been generally acknowledged that, the ratio of PEU is less, and low-carbon energy-saving is got over by data center, and ratio is larger, illustrated more electric energy consume by corollary equipments such as air-conditioning, illumination, power supplys, and do not have new green power supply supplement.The air-conditioning energy consumption rate anharmonic ratio of general data center is comparatively large, and its PUE value is often greater than 2.Current international average PUE value is about 1.8, and domestic mean P UE value is more than 2.0, and level is uneven.Country explicitly calls for the PUE value of large-scale data center to be less than 1.5, and the data center therefore just PUE value being less than 1.5 is defined as green data center.

Data center is except information technoloy equipment energy consumption, and maximum energy consumption is exactly air-conditioning.Information technoloy equipment is the part that energy consumption is the highest, accounts for about 50% of data center's total energy consumption.Air conditioning energy consumption ranked second position in heart total energy consumption in the data, accounts for 40%.Information technoloy equipment is the core of data center, and it runs smoothly is the key index of data center's operation.Always generate heat because information technoloy equipment is in operation, for preventing the machine of delaying, the air-conditioning of data center must be refrigeration throughout the year.State-of-the-art data center is based upon high latitude area in the world, mainly in order to utilize the winter of high latitude area natural cold energy to reach the object reducing information technoloy equipment temperature, so build data center at low latitudes to there is geographic natural deficiency.So build data center at low latitudes, its PUE value can be difficult to reduce because of the high flow rate of air-conditioning electricity, generally about 1.7.

LNG is the abbreviation of liquefied natural gas, at ambient pressure natural gas is refrigerated to about-162 DEG C, and it can be made to change liquid into.Liquefied natural gas is by natural gas after purification, adopts the technique that compression, throttling, expansion and additional low-temperature receiver freeze to be formed.In LNG gasification, the cold energy of its release can adopt direct or indirect method to be used.The LNG of liquefaction contains a large amount of cold energy, rationally makes full use of LNG cold energy, the object reach economize energy, reducing environmental pollution, increase economic efficiency.And on the ground such as coastal of low latitudes, have the harbour of a lot of transport and storage LNG, these harbours are converted to the backward outer conveying of NG (natural gas) after generally adopting seawater to heat up to LNG, cold energy is wasted, and the discharge of cold energy can cause very large impact to periphery seawater ecological environment.So how to use and to control these cold energy well significant for energy-conserving and environment-protective.

Summary of the invention

The invention provides and a kind ofly significantly can reduce data center's air-conditioning system of the application LNG cold energy of data center PUE value and the method for data center air-conditioning system application LNG cold energy, to realize the low energy consumption of data center's air-conditioning system.

Above technical problem solves by the following technical programs: a kind of based on LNG cold applicable data center air-conditioning system, comprise LNG fluid reservoir, First Heat Exchanger, second heat exchanger, described second heat exchanger is arranged on data center, this system also comprises high temperature refrigerant storage tank, low temperature coolant storage tank, described LNG fluid reservoir connects described First Heat Exchanger, described First Heat Exchanger connects described high temperature refrigerant storage tank and low temperature coolant storage tank, and described high temperature refrigerant storage tank is connected with described second heat exchanger respectively with described low temperature coolant storage tank.The cold energy of LNG is passed to refrigerant by First Heat Exchanger, refrigerant carries out after step heat exchange through low temperature coolant storage tank, arrive the second heat exchanger of data center, after second heat exchanger of data center adopts water-cooled heat exchange, cold air being transferred to each machine room by exhaust system is information technoloy equipment cooling in machine room.The high cold energy of LNG can be made full use of like this, realize the air conditioning object of data center, and owing to not needing to use power supply refrigeration, power supply only needs to drive ventilating system, significantly can reduce the energy consumption of data center like this, and then reduce PUE value, reach the standard of green data center.

Further, described high temperature refrigerant storage tank quantity arranges and is at least two, and is connected in series between described high temperature refrigerant storage tank, and described low temperature coolant storage tank quantity is set at least two, and is connected in series between described low temperature coolant storage tank.Because refrigerant is after First Heat Exchanger heat exchange cooling, temperature can be reduced to less than-50 DEG C, through multistage coolant storage tank step cooling and insulation, the temperature of refrigerant in air-conditioning heat exchange refrigeration system can be controlled better, realize data center to temperature controlled high request.

Further, in described second heat exchanger, the temperature that refrigerant enters battery limit (BL) is-45 DEG C to-35 DEG C, and the temperature that refrigerant goes out battery limit (BL) is 20 DEG C to 30 DEG C.Data center's General Requirements indoor temperature is between 18 DEG C to 20 DEG C, so out-of-bounds temperature is unsuitable too high, should remains in the temperature range of data center's needs, so more be conducive to the temperature in control data centre chamber.Refrigerant enters the temperature meaning that battery limit temperature is the refrigerant of heat exchanger import department, and the temperature that refrigerant goes out battery limit (BL) is the temperature meaning of the refrigerant at heat exchanger exit place.

Further, in described First Heat Exchanger, the temperature that refrigerant enters battery limit (BL) is 25 DEG C to 35 DEG C, and the temperature that refrigerant goes out battery limit (BL) is-50 DEG C to-40 DEG C.Refrigerant temperature is unsuitable too low, and the too low refrigerant of temperature not only increases cost to equipment and raw material, and due between needing the temperature reduction 18 to 20 of data center to spend, thus temperature too low after, the requirement of step temp. rising increases, and temperature should not control.

Further, in described First Heat Exchanger, the temperature that LNG enters battery limit (BL) is-145 DEG C to-140 DEG C, and the temperature that NG goes out battery limit (BL) is 0 DEG C to 5 DEG C.

Further, described connection all adopts pipeline to connect, and the wall thickness of cryogenic piping is more than or equal to 6mm, and the wall thickness of high-temperature pipe is more than or equal to 3mm.Pipeline wall thickness is under the condition allowed, more thick better.But for the consideration of cost, through calculating the wall thickness of cryogenic piping at more than 6mm, the wall thickness of high-temperature pipe can reach object and the effect of fluid transport at more than 3mm.

Further, described air-conditioning system also comprises use civil power, diesel-driven generator or UPS for electric drive refrigeration system, and the primary capacity of described UPS is more than or equal to 710KVA, and system backup set of time is more than or equal to 15 minutes.LNG cold energy is adopted to freeze the risk of the continuation aspect that may occur in order to reduce, so be provided with the electric-driven refrigerating system comprising civil power, diesel generation or UPS (ups is the meaning of uninterrupted power source) and power, ensure the lasting cooling of data center's air-conditioning system.Through calculating, the system backup time at least will reach 15 minutes ability and meet the object that data center runs, so the primary capacity setting of UPS is at least 710KVA, prevent once occur that LNG cold energy is under-supply, the situation of civil power power-off, diesel-driven generator starts needs the regular hour, at this moment needs UPS for electric drive refrigeration system, ensures that cold air supply is uninterrupted.

Further, the natural gas transport after described First Heat Exchanger heat exchange is to natural gas high pressure pipe network and/or Natural Gas power plant.After First Heat Exchanger heat exchange, can be delivered to high pressure pipe network and Natural Gas power plant after liquefied natural gas becomes natural gas, air-conditioning system of the present invention like this can be built jointly with LNG gas transmission network, should ground suiting measures to different conditions.And the geo-advantage of Natural Gas Power Plant can be utilized, for data center provides stable supply of electric power.

Further, described refrigerant comprises ethylene glycol, propane diols, liquid nitrogen, calcium chloride brine, carrene or fluoro trichloromethane.In the present invention, the working stability of refrigerant between 25 DEG C to-50 DEG C, so refrigerant can include but not limited to above-mentioned coolant media.

As preferably, described LNG fluid reservoir is also provided with feet, described feet comprises the hypomere that epimere and upper end are set in hypomere lower end, the lower end of hypomere is provided with mount pad, the shock-absorbing spring supporting described epimere is provided with in hypomere, the upper end of described epimere is provided with connecting ring, inner ring is equipped with in described connecting ring, described inner ring is linked together with described connecting ring by rubber ring, described rubber ring is provided with several blind holes distributed along rubber ring circumference, described blind hole is arranged at inner peripheral surface or the outer peripheral face of described rubber ring, division board is provided with in described blind hole, described blind hole is divided into radially-arranged two cavitys along rubber ring by described division board, described division board is provided with the main friction passage being communicated with described two cavitys, friction plate is provided with in described main friction passage, described friction plate is equipped with the friction lever that can radially slide along rubber ring, described friction lever is provided with a friction passage, the elastomeric cap arched upward towards blind hole inside is stamped in the openend of described blind hole, described inner ring is equipped with the connecting pin linked together with described LNG fluid reservoir.The shock insulation that can improve LNG fluid reservoir shake effective, prevent the dust stockpiled from again being kicked up, thus play the effect improving dust removing effects.When being subject to vibrating, because inner ring is connected by rubber ring with connecting ring, connecting ring is not easy to produce distortion, and distortion fecund is born in inner ring, so only need after distortion to change inner ring.The shock insulation process of the technical program is: by liquid filling in blind hole, when being subject to vibrating, reciprocal radial displacement can be produced between inner ring and connecting ring, when this displacement can cause blind hole to be out of shape, blind hole distortion and drive that position liquid in the inner flows back and forth between inner chamber body and outer chamber, the rocking of friction plate and friction lever, liquid flow and friction plate and friction lever rock and change vibrational energy into heat energy in process and consume.If vibrate less and be not enough to impel blind hole to be out of shape time, now only have rocking of liquid, during liquid sloshing, friction lever produces and rocks and energy-absorbing, friction lever is set and can improves the absorption that frequency low-amplitude is vibrated, make the present invention not only can absorb the vibrational energy of isolation high amplitude, can also absorb the vibrational energy of short arc, therefore isolating affection is better.When this structure can make the blind hole of side be squeezed, the blind hole of opposite side then produces diastole instead of simultaneously pressurized or diastole, and making when the positive and negative amplitude vibrated is interval can both effectively absorbing, and absorbing efficiency is high.

As preferably, described friction plate is all stretched out at the two ends of described friction lever, and two end faces of described friction lever are all sphere.Also friction lever can be driven when liquid can be made to receive the vibration of nonrubber pad radial direction to run and energy-absorbing along rubber blanket radial direction.Energy-absorbing effect is good.

As preferably, described friction lever is cylindrical, two end faces of described friction lever is all provided with some grooves along the distribution of friction lever circumference.The contact area of energy-absorbing bar with liquid can be improved, to improve energy-absorbing effect and induction sensitivity.

Described feet also comprises driving mechanism, and described inner ring is connected to described connecting ring rotationally, and described driving mechanism is used for the one-directional rotation point resultant motion between epimere and hypomere being converted to inner ring.When being subject to vibrating, inner ring can one-directional rotation, thus avoids inner ring to be impacted at a position for a long time, thus can effectively avoid interior annular strain, and inner ring is indeformable, once connecting ring produces distortion, inner ring can also play the effect of repairing connecting ring.Thus effectively overcome the problem that connecting ring easily produces distortion.

As preferably, described driving mechanism comprises the ratchet of ratchet and driving pawl, and described ratchet coaxially links together with described inner ring; Described ratchet links together with hypomere.Simple and practical.

As preferably, described ratchet is fixed in drive rod, and described ratchet is connected with described hypomere by described drive rod, and described drive rod is connected with and drives described ratchet to be brought together into engage spring on described ratchet.Reliability of Microprocessor is good.

As preferably, described epimere is provided with slide opening, and described fixed bar can two dimension be slidably connected in described slide opening.Ratchet can be further easily made to carry out folding with ratchet, good reliability during one-directional rotation.

As preferably, described fixed bar is provided with deposits hole, deposits in hole described in one end of described engage spring is located in.Reliability and convenience when being connected can be improved

A method for data center air-conditioning system application LNG cold energy, comprises the following steps:

S1, liquefied natural gas is delivered to First Heat Exchanger from LNG fluid reservoir, and the boundary's temperature that enters of LNG is-145 DEG C to-140 DEG C, and the temperature being converted into NG is 0 DEG C to 5 DEG C, and the out-of-bounds temperature of refrigerant is-50 DEG C to-40 DEG C; Enter the meaning that boundary's temperature refers to inlet temperature, out-of-bounds temperature refers to the meaning of outlet temperature.

S2, refrigerant is delivered to low temperature coolant storage tank after First Heat Exchanger heat exchange, after two-stage low temperature coolant storage tank, enters the second heat exchanger, refrigerant enter boundary's temperature between-45 DEG C to-35 DEG C;

S3, refrigerant is by after the second heat exchanger heat exchange, and the out-of-bounds temperature of refrigerant is 20 DEG C to 30 DEG C, and the second heat exchanger is by heat exchange, and the air supply duct that cold energy is delivered to data center by ventilating system is machine room refrigeration;

S4, refrigerant is delivered to First Heat Exchanger from the second heat exchanger, and the boundary's temperature that enters of refrigerant is 25 DEG C to 35 DEG C;

S5, repeats S1 to S4.

The present invention has following beneficial effect: the high cold energy that can make full use of LNG, realize the air conditioning object of data center, and owing to not needing to use power supply refrigeration, power supply only needs to drive ventilating system, significantly can reduce the energy consumption of data center like this, through estimation, air conditioning energy consumption can be reduced by more than 90%, and then reduce PUE value, greatly cut down energy resource consumption, the impact of cold energy discharge on surrounding enviroment when LNG heats up can also be reduced simultaneously, thus reach the standard of green data center.

Accompanying drawing explanation

Fig. 1 is the schematic diagram based on LNG cold applicable data center air-conditioning system in the embodiment of the present invention one.

Fig. 2 is the block diagram of the method for data center air-conditioning system application LNG cold energy in the embodiment of the present invention one.

Fig. 3 is the schematic diagram of the LNG oil storage tank in the embodiment of the present invention in two.

Fig. 4 be connecting ring in Fig. 3 analyse and observe enlarged diagram.

Fig. 5 is the close-up schematic view at the C place of Fig. 4.

Fig. 6 is the close-up schematic view at the D place of Fig. 5.

Fig. 7 is the close-up schematic view at the B place of Fig. 6.

Fig. 8 is the close-up schematic view of the feet in the embodiment of the present invention three.

Detailed description of the invention

Below in conjunction with accompanying drawing, invention is further described.

Embodiment one, see Fig. 1, a kind of based on LNG cold applicable data center air-conditioning system, comprise LNG fluid reservoir 1, in this embodiment, refrigerant adopts EG and ethylene glycol, First Heat Exchanger 2 adopts LNG/ refrigerant heat exchanger, and the second heat exchanger 5 adopts air-conditioning heat exchange refrigeration system.The LNG fluid reservoir 1 of this system is arranged on harbour usually, First Heat Exchanger 2 is set near harbour, be connected with pipeline between LNG fluid reservoir 1 with First Heat Exchanger 2, pipeline adopts cryogenic piping, for the consideration of cost, the wall thickness of cryogenic piping is 6mm, can select thicker pipeline according to actual conditions or geographical environment.In order to realize step temp. rising to refrigerant and control, the present embodiment is provided with two low temperature coolant storage tanks 3, adopt between this two low temperature coolant storage tanks 3 and First Heat Exchanger 2 and be connected in series, connect with cryogenic piping equally, the wall thickness of pipeline is 6mm, because refrigerant is after First Heat Exchanger 2 heat exchange cooling, temperature can be reduced to less than-50 DEG C, so need through two-stage even three grades or level Four low temperature coolant storage tank 3 step cooling and insulation, could control the temperature of refrigerant in the second heat exchanger 5 better like this, realize the high request of data center to temperature, the present embodiment is only from the angle Selection two-stage low temperature coolant storage tank of principle of specification and cost.Temperature when refrigerant enters First Heat Exchanger 2 is 25 DEG C, and the temperature of refrigerant when First Heat Exchanger 2 is left in heat exchange is-50 DEG C.And in First Heat Exchanger 2, temperature when LNG enters is-145 DEG C, and when leaving, LNG becomes NG, now the temperature of NG is 0 DEG C.The NG becoming gasification is now delivered to natural gas high pressure pipe network 11, and to Natural Gas power plant 8 air feed generating.

Low temperature coolant storage tank is connected with cryogenic piping with the second heat exchanger 5 being arranged on data center, to the second heat exchanger 5 transporting low temperature refrigerant.Cooling water heat exchange in water-cooled heat-exchange system in low temperature refrigerant and the second heat exchanger 5, and then generation refrigeration, cold air is then by the ventilating system transporting cold-air of the second heat exchanger 5 to data center, and then cold air is transported in each machine room of data center, the information technoloy equipment in machine room is lowered the temperature.Temperature when refrigerant enters the second heat exchanger 5 is-45 DEG C, and temperature when refrigerant leaves the second heat exchanger 5 is 20 DEG C.Temperature when now refrigerant enters the second heat exchanger 5 is unsuitable too low, is unfavorable for the heat exchange of cooling water in the second heat exchanger 5 like this, is unfavorable for the temperature controlling air-conditioning system.And data center's General Requirements keeps indoor temperature between 18 DEG C to 20 DEG C, so out-of-bounds temperature is unsuitable too high, too high out-of-bounds temperature can waste cold energy during heat exchange.At this moment should remain in the temperature range of data center's needs, heat exchanger effectiveness can be improved better like this.

Refrigerant becomes high temperature refrigerant after leaving the second heat exchanger 5, after two-stage high temperature refrigerant storage tank 4, comes back to the cold energy that First Heat Exchanger 2 receives LNG exchange, realizes the cold permutable closed-loop control of LNG.Two-stage high temperature refrigerant storage tank 4 adopts high-temperature pipe to be connected with between the second heat exchanger 5 and First Heat Exchanger 2, and the wall thickness of high-temperature pipe is 3mm.

The cold energy of LNG is passed to refrigerant by First Heat Exchanger by the present invention, refrigerant carries out after step heat exchange through low temperature coolant storage tank, arrive the air-conditioning heat exchange refrigeration system of data center, after the air-conditioning heat exchange refrigeration system of data center adopts water-cooled heat exchange, cold air being transferred to each machine room by exhaust system is information technoloy equipment cooling in machine room.The high cold energy of LNG can be made full use of like this, realize the air conditioning object of data center, and owing to not needing to use power supply refrigeration, power supply only needs to drive ventilating system, significantly can reduce the energy consumption of data center like this, and then reduce PUE value, reach the standard of green data center.

Because the supply of LNG can change along with the change in season, generally can correspondingly reduce in the winter time, so in order to ensure that data center can have continual and steady air-conditioning system to run, described air conditioner heat exchange system also comprises the electric-driven refrigerating system 10 using civil power, diesel-driven generator or UPS to power, the electric-driven refrigerating system that described civil power, diesel-driven generator are powered and UPS powers adopts conventional electric power to drive refrigeration modes, repeats no more herein.In order to prevent once occur that LNG cold energy is under-supply, the situation of civil power power-off, and diesel-driven generator startup needs the regular hour, at this moment need UPS for electric drive refrigeration system, so in order to ensure that the system backup time is more than or equal to 15 minutes, by the primary capacity setting of UPS for being more than or equal to 710KVA, like this once there is the situation of power-off, also can ensure that cold air supply is uninterrupted.

Coolant media in the present embodiment have selected EG and ethylene glycol, as long as the selection due to refrigerant meets operating temperature between 25 DEG C to-50 DEG C, so coolant media, namely cold-producing medium can also select propane diols, liquid nitrogen, calcium chloride brine, carrene or fluoro trichloromethane.

As shown in Figure 2, present invention also offers a kind of method of data center air-conditioning system application LNG cold energy, said method comprising the steps of:

S1, liquefied natural gas is delivered to First Heat Exchanger from LNG fluid reservoir, and the boundary's temperature that enters of LNG is-145 DEG C, and the temperature being converted into NG is 0 DEG C, and the out-of-bounds temperature of refrigerant is-50 DEG C;

S2, refrigerant is delivered to low temperature coolant storage tank after First Heat Exchanger heat exchange, after two-stage low temperature coolant storage tank, enters the second heat exchanger, and boundary's temperature of entering of refrigerant is-45 DEG C;

S3, refrigerant is by after the heat exchange of air-conditioning heat exchange refrigeration system, and the out-of-bounds temperature of refrigerant is 20 DEG C, and the second heat exchanger is by heat exchange, and the air supply duct that cold energy is delivered to data center by ventilating system is machine room refrigeration;

S4, refrigerant is delivered to First Heat Exchanger from the second heat exchanger, and the boundary's temperature that enters of refrigerant is 25 DEG C;

S5, repeats S1 to S4.

The present invention can make full use of the high cold energy of LNG, realize the air conditioning object of data center, and owing to not needing to use power supply refrigeration, power supply only needs to drive ventilating system, significantly can reduce the energy consumption of data center like this, through estimation, air conditioning energy consumption can be reduced by more than 90%, and then reduce PUE value, greatly cut down energy resource consumption, the impact of cold energy discharge on surrounding enviroment when LNG heats up can also be reduced simultaneously, thus reach the standard of green data center.

The energy consumption of data center of the present invention is adopted to reduce effect below by way of calculating demonstration.

Following table is the calculating standard of a standard large-scale data center cooling load estimation:

Following table is then that refrigerant/LNG cold energy exchanges and induction system measuring and calculating:

According to above-mentioned calculating basis, following table is the energy-conservation measuring and calculating of data center LNG cold energy use:

Sequence number	Refrigeration system	Unit	Numerical value
				1	Data center's refrigeration consumption rate	Ten thousand kwh/a	110
2	Operating time in year	h	8760
				3	Data center's refrigerating efficiency		0.9
4	Motor shaft power efficiency		0.9

According to above measuring and calculating, comprise construction cost, calculated by 10 years depreciable lifes, the service cost of data center's cold energy is at about 3,000 ten thousand yuan/year, and the purchasing price of cold energy is at 0.2 yuan/about kwh.Utilize the present invention to build data center, the PUE value of this data center can about 1.2, and often save 1 degree of electricity, just the corresponding standard coal having saved 0.4 kilogram, decreasing pollution discharges 0.272 kg of carbon, 0.785 kilogram of CO2 emission simultaneously.The carbon dioxide of 2-3 tree consumption every day can reduce discharging 1 kilogram, so often build a data center according to the present invention to be equivalent to annual new plantation 1,500,000 trees.

In the present embodiment, a lot of temperature spots sets forth technical scheme for the sake of simplicity, do not represent the protection domain of claim; wherein; in described second heat exchanger, refrigerant enters the temperature of battery limit (BL) can between-45 DEG C to-35 DEG C, and refrigerant goes out the temperature of battery limit (BL) can between 20 DEG C to 30 DEG C.In described First Heat Exchanger, refrigerant enters the temperature of battery limit (BL) can between 25 DEG C to 35 DEG C, and refrigerant goes out the temperature of battery limit (BL) between-50 DEG C to-40 DEG C.In described First Heat Exchanger, LNG enters the temperature of battery limit (BL) can between-145 DEG C to-140 DEG C, and NG goes out the temperature of battery limit (BL) can at 0 DEG C to 5 DEG C.Above temperature range all can realize goal of the invention of the present invention.

So far, those skilled in the art will recognize that, although multiple exemplary embodiment of the present invention is illustrate and described herein detailed, but, without departing from the spirit and scope of the present invention, still can directly determine or derive other modification many or amendment of meeting the principle of the invention according to content disclosed by the invention.Therefore, scope of the present invention should be understood and regard as and cover all these other modification or amendments.

Embodiment two, the difference with embodiment one is:

Feet 9 is also provided with see Fig. 3, LNG fluid reservoir 1.Feet 9 comprises hypomere 91 and epimere 92.The lower end of hypomere 91 is provided with mount pad 911.The upper end of hypomere 91 is set on the lower end of epimere 92 slidably.The shock-absorbing spring 93 supporting epimere 92 is provided with in hypomere 81.The upper end of epimere 92 is provided with connecting ring 921.Inner ring 922 is equipped with in connecting ring 921.Inner ring 922 is linked together with connecting ring 921 by rubber ring 7.Inner ring 922 is equipped with connecting pin 923.Connecting pin 923 links together with LNG fluid reservoir 1.

See Fig. 4, the inner peripheral surface of rubber ring 7 is provided with the blind hole 71 (outer peripheral face that blind hole is arranged on rubber ring is also fine) that several circumferences along rubber ring distribute.Division board 72 is provided with in blind hole 71.Blind hole 71 is divided into two cavitys and inner chamber body 711 and outer chamber 712 by division board 72.The flexible lid 73 of open end cap of blind hole 71.Elastomeric cap 73 is the bowl-type arched upward towards blind hole 71 inside.

See Fig. 5, division board 72 is provided with some main friction passage 75.Main friction passage 75 communication with cavity body 711 and outer chamber 712.Friction plate 76 is provided with in main friction passage 75.

See Fig. 6, in friction plate 76, be equipped with some friction levers 77 that can slide along above-below direction in the distribution arrangement of inner chamber body and outer chamber and figure.Friction lever 77 is cylindrical.Friction lever 77 is provided with a friction passage 78.Prop up the space (in being namely communicated with outer chamber) that friction passage 78 is communicated with friction plate 76 upper and lower.Two axial ends 771 of friction lever 77 are all sphere.

See Fig. 7, two axial ends 771 of friction lever 77 are all provided with some grooves 772.Groove 772 is along the distribution of friction lever 77 circumference.

The absorbing process of rubber ring is, see Fig. 4 to Fig. 7, in inner chamber body 711 and outer chamber 712 all filled with fluid (can certainly make of the present invention time filling liquid), when panel and horizontal fixed plate produce vibration and are expressed to rubber ring 7 and cause blind hole 71 to be out of shape, make that liquid flows back and forth between inner chamber body 711 and outer chamber 712, friction plate 76 and friction lever 77 (see Fig. 7) produce and rock, liquid flow and friction plate and friction lever rock and change vibrational energy into heat energy in process and consume.If vibrate less and be not enough to impel blind hole to be out of shape time, now only have rocking of liquid, during liquid sloshing friction lever produce rock and energy-absorbing.

Embodiment three, the difference with embodiment two is:

See Fig. 8, feet 9 is also provided with driving mechanism 6.Inner ring 5 is connected in rubber ring 7 rotationally, and rubber ring 7 is fixed together with connecting ring 921.

Driving mechanism 6 comprises ratchet 61, the ratchet 62 of driving pawl and drive rod 63.Ratchet 61 coaxially links together with inner ring 922.Ratchet 61 is structure as a whole with inner ring 922.Ratchet 62 is fixed in one end of drive rod 63.Epimere 92 is provided with slide opening 924.The other end of drive rod 63 can be located in slide opening 924 in two dimension slip.The radial direction of the lower end edge connecting ring 921 of drive rod 63 slidably clasp joint is fixed together in hypomere 91 (see Fig. 3).Drive rod 63 is provided with deposits hole 64.Deposit hole 64 and have two.Deposit in hole 64 and be equipped with engage spring 65.Engage spring 65 is extension spring.One end of engage spring 65 links together with drive rod 63, and the other end links together with epimere 92.When engage spring 65 is in free state, under the effect of engage spring 65 spring, ratchet 62 can be engaged in ratchet 61.

During use, when being caused feet 9 to produce contractile motion when vibrating, drive rod 63 is towards connecting ring 921 translation (top namely in Fig. 8 is moved), now ratchet 62 can rotate clockwise by driving pawl 61, ratchet 61 drives inner ring 5 to rotate clockwise, when feet extends, drive rod 63 moves down, now ratchet 62 can not to rotate and when ratchet 62 touches the tooth on ratchet 61 by driving pawl 61, drive rod 63 makes drive rod 63 to reset away from ratchet 61, when ratchet 62 does not touch the tooth on ratchet 61, under the effect of engage spring 65, ratchet 62 moves to right and resets.Thus when making each vibration period, the impact site suffered by inner ring 922 is different, and inner ring 5 is circumferentially shifted one's position continuously and withstands shocks thus be not easy produce distortion and become oval.

Claims (10)

1. one kind based on LNG cold applicable data center air-conditioning system, comprise LNG fluid reservoir, First Heat Exchanger, the second heat exchanger, described second heat exchanger is arranged on data center, it is characterized in that, this system also comprises high temperature refrigerant storage tank, low temperature coolant storage tank, and described LNG fluid reservoir connects described First Heat Exchanger, described First Heat Exchanger connects described high temperature refrigerant storage tank and low temperature coolant storage tank, and described high temperature refrigerant storage tank is connected with described second heat exchanger respectively with described low temperature coolant storage tank.

2. according to claim 1 based on LNG cold applicable data center air-conditioning system, it is characterized in that, described high temperature refrigerant storage tank quantity arranges and is at least two, and be connected in series between described high temperature refrigerant storage tank, described low temperature coolant storage tank quantity is set at least two, and is connected in series between described low temperature coolant storage tank.

3. according to claim 1 and 2ly it is characterized in that based on LNG cold applicable data center air-conditioning system, in described second heat exchanger, the temperature that refrigerant enters battery limit (BL) is-45 DEG C to-35 DEG C, and the temperature that refrigerant goes out battery limit (BL) is 20 DEG C to 30 DEG C.

4. according to claim 1 and 2ly it is characterized in that based on LNG cold applicable data center air-conditioning system, in described First Heat Exchanger, the temperature that refrigerant enters battery limit (BL) is 25 DEG C to 35 DEG C, and the temperature that refrigerant goes out battery limit (BL) is-50 DEG C to-40 DEG C.

5. according to claim 1 and 2ly it is characterized in that based on LNG cold applicable data center air-conditioning system, in described First Heat Exchanger, the temperature that LNG enters battery limit (BL) is-145 DEG C to-140 DEG C, and the temperature that NG goes out battery limit (BL) is 0 DEG C to 5 DEG C.

6. according to claim 1ly it is characterized in that based on LNG cold applicable data center air-conditioning system, described connection all adopts pipeline to connect, and the wall thickness of cryogenic piping is more than or equal to 6mm, and the wall thickness of high-temperature pipe is more than or equal to 3mm.

7. according to claim 1 based on LNG cold applicable data center air-conditioning system, it is characterized in that, described air-conditioning system also comprises use civil power, diesel-driven generator or UPS for electrically driven (operated) electric-driven refrigerating system, the primary capacity of described UPS is more than or equal to 710 kilovolt-amperes, and system backup set of time is more than or equal to 15 minutes.

8. according to claim 1ly it is characterized in that based on LNG cold applicable data center air-conditioning system, the natural gas transport after described First Heat Exchanger heat exchange is to natural gas high pressure pipe network and/or Natural Gas power plant.

9. according to claim 1 to 8 office state based on LNG cold applicable data center air-conditioning system, it is characterized in that, described refrigerant comprises ethylene glycol, propane diols, liquid nitrogen, calcium chloride brine, carrene or fluoro trichloromethane.

10. a method for data center's air-conditioning system application LNG cold energy, is characterized in that, said method comprising the steps of:

S1, liquefied natural gas is delivered to First Heat Exchanger from LNG fluid reservoir, and the boundary's temperature that enters of LNG is-145 DEG C to-140 DEG C, and the temperature being converted into NG is 0 DEG C to 5 DEG C, and the out-of-bounds temperature of refrigerant is-50 DEG C to-40 DEG C;

S2, refrigerant is delivered to low temperature coolant storage tank after First Heat Exchanger heat exchange, after two-stage low temperature coolant storage tank, enters the second heat exchanger, refrigerant enter boundary's temperature between-45 DEG C to-35 DEG C;

S3, refrigerant is by after the second heat exchanger heat exchange, and the out-of-bounds temperature of refrigerant is 20 DEG C to 30 DEG C, and the second heat exchanger is by heat exchange, and the air supply duct that cold energy is delivered to data center by ventilating system is machine room refrigeration;

S4, refrigerant is delivered to First Heat Exchanger from the second heat exchanger, and the boundary's temperature that enters of refrigerant is 25 DEG C to 35 DEG C;

S5, repeats S1 to S4.