CN1140753C

CN1140753C - Ice heat-storage controller

Info

Publication number: CN1140753C
Application number: CNB011212241A
Authority: CN
Inventors: 威廉・T・奥斯本; 威廉·T·奥斯本; D・史密斯; 加里·D·史密斯
Original assignee: Baltimore Aircoil Co Inc
Current assignee: Baltimore Aircoil Co Inc
Priority date: 2000-06-26
Filing date: 2001-06-06
Publication date: 2004-03-03
Anticipated expiration: 2021-06-06
Also published as: CA2346351C; ID30565A; HK1041513B; BR0102586A; HK1041513A1; SG88826A1; BR0102586B1; CN1332349A; AU744768B2; CA2346351A1; AU4799001A

Abstract

An arrangement of apparatus for the measurement of the quantity amount of ice in an ice thermal storage system having a storage tank with a storage fluid and a cooling coil assembly therein, and the method for measuring such ice quantity, which apparatus includes a means to provide an uplift force to the coil assembly and, means for measurement of the vertical displacement of the coil in the storage tank and means for relating the vertical displacement of the cooling coil assembly to the quantity of ice on the cooling coil assembly, and further noting a specific uplifting force assembly for use in such storage tanks.

Description

Ice heat-storage controller

The application is U.S. Patent Application Serial 09/603400, the applying date to be that on June 26th, 2000, denomination of invention are the part continuation application of " ice heat-storage controller ", and here, the full disclosure content of this application as a reference.

The present invention about the ice heat reservoir, especially instructed in order to measure ice heat accumulation heat exchanger, as a kind of improved method and apparatus of the ice amount in the coil pack.

In prior art, people have known this ice heat accumulation equipment, and its ice making during non-peak of power consumption makes the ice made as cooling or the cryogen of space air-conditioning is provided then.But the rough segmentation of this ice heat accumulation equipment is interior thawing system and outer thawing system.A kind of heat accumulation equipment of form and outer thawing system transmission refrigerating fluid, as salt solution or ethylene glycol solution, refrigerating fluid passes the coil pack in the case that is immersed in the liquid storage that will freeze, this liquid storage can be a water.This coil pack be usually be layered in storage tank and the liquid storage by many tube bendings form snakelike.A plurality of coil packs are deposited in the storage tank with parallel mode.This coil pack is connected between the entrance and exit, in order to receiving and to discharge the refrigerating fluid of one or more heat exchangers or cooling device, thereby in the ice making circulation cooling refrigeration liquid.

Can make refrigerating fluid though mention saline solution, should see that refrigerating fluid can be the refrigerant of R-22 or ammoniacal liquor and so on.

During freezing, the temperature of the liquid storage in liquid storage tank is lower than solidification point, and the cooling such as salt solution is produced continuously by the mechanical refrigeration device in the heat exchanger or other device, and the heat exchanger here is known as cooling device sometimes.Cryogenic liquid delivers to inlet attack, pass coil pack and discharge from outlet connection, to turn back to cooling device.Liquid storage in the storage tank is chilled on the pipe outer wall, surrounds the pipe outer wall, and develops into the very freezing liquid of thick-layer gradually, and this normally ices.The liquid storage that has certain volume in storage tank, they still remain liquid.When utilizing the heat accumulation energy, the liquid storage of cooling is extracted out and is connected to the cooling coil or heat exchanger in downstream from storage tank, to carry out as cooling down operations such as air-conditioning or food processing.After this, liquid storage discharge or heating turns back in the storage tank and cools off, using in the cooling down operation next time.

People have made an effort and have measured or measured the freezing degree of liquid in the storage tank.Requiring the main reason of the amount of the freezing back of mensuration liquid is to know the cooling energy that has stored that exists in the storage tank.A kind of icing measuring method is that coil pipe is placed on the spring, measures the climbing power of coil pipe with force cell, and this coil pipe is subjected to vertical restriction of moving.This device is an amount of measuring the ice on the coil pipe with climbing power.In disclosed text, there is no detailed structure and accompanying drawing about this force-measuring sensing system.

Be used for measuring and monitoring the ice of being tied on coil pack in the pond of liquid reserve tank, popular method comprises the lip-deep ice of range estimation at present, and this can not think effective or measurable.The another kind of method of measuring ice adopts the fluid level monitor, and its operation principle is one pound and ices shared volume greater than one pound of water.Not that these devices are inapplicable under the situation of loop of a sealing in hydraulic system.In addition, survey the variation of managing last conductance when ice is grown with electric probe in the thawing system outside and measure ice thickness, yet verified, the probe that uses in this method is very fragile.

The invention provides a kind of method, in order to the icing amount of identification in the storage tank, therefore can draw cooling energy, and a kind of device is provided, its device by climbing power is provided and displacement sensing apparatus are measured the icing amount in the liquid cell.More particularly require to measure the quality of the ice that forms in the liquid cell of ice heat reservoir, the quality of this ice is measured as the function of the vertical displacement on coil pack surface, and vertical displacement available electron or artificial method are measured.

Measure the quality of ice can be on hundred-percent design load or in the storage tank any desired ice stop ice making or cool cycles qualitatively, thereby strengthened the cooling down operation performance of heat reservoir.

In the accompanying drawing below, the same identical part of reference number representative, in these accompanying drawings:

Fig. 1 is the oblique view that part is analysed and observe, the coil pack in its expression heat storage box exemplary, prior art;

Fig. 2 is the end-view of the coil pack of accumulation, and the joint with spring assembly is placed between two coil pipes at top;

Fig. 3 is the exemplary plot of the control circuit of ice heat reservoir;

Fig. 4 is placed on enlarged drawing on the support channel-section steel of icing coil pipe of storage tank with spring assembly;

Fig. 5 represents the upright view of decomposition of spiral spring assembly cover;

Fig. 6 is the internal view of the upright view of Fig. 5;

Fig. 7 is the exploded view of the spiral spring assembly of Fig. 5;

Fig. 8 is the part exploded view of spiral spring assembly of Fig. 5 of tool Bel (Belleville) pad;

Fig. 9 is the internal view of the upright view of Fig. 8;

Figure 10 is the skeleton diagram of exemplary ice heat-storing device;

Figure 11 represents as the percentage of doing with inch office to ice in the storage tank of vertical coil pipe move function with curve;

Figure 12 is that the spiral spring assembly is placed on the enlarged drawing between the support in the bight between the single spiral spring assembly.

Basic or exemplary heat-storing device 10 shown in Figure 10 has the chamber 14 of storage tank 12, and liquid storage, Ru Shui are housed in the chamber.Coil pipe 16 overlays in the chamber 14, and is connected on glycol-cooled device or the direct refrigeration system 18.In the thawing system outside, cold cooling fluid, as ethylene glycol by coil pipe 16 UNICOMs, with cooling and freeze liquid storage in the chamber 14.CHP 26 is linked on the pond 14 by pipeline 28, and the cold liquid storage in the chamber 14 is connected in the cooling coil 30 by pipeline 22, utilizes the cooling energy of storage on a Cryogenic air hybrid terminal device 20.Cooling fluid after the use of cooling coil 30 is recycled in the chamber 14 by Returning pipe 24.As an example, cooling coil 30 can be the heat-exchange device on the air-conditioner.System 10 among Figure 10 is only as the use of heat-storing device and the exemplary explanation of operational circumstances.

Coil pipe 16 among Figure 10 has very wide down suction as the flow channel in single serpentine coil or the chamber 14 between the coil pipe of adjacent level run.Yet just as illustrated in fig. 1 and 2, the exemplary pipe 32 of typical coil pipe 16 has a plurality of arrays of 32 of managing closely, and they extend between crossbeam 46 and 48.Coil pipe 16 is usually designed to the volume that freezes that has ice cube or consider design or require.

In Fig. 1, each vertical coil pipe 16 has following pipe group 40 and last pipe group 42, and certainly, people have known that the quantity of vertical tube group can be greater than two groups.Pipe group 40 among Fig. 1 and 42 each all overlay on the pipe support 44, pipe support has last coil pipe crossbeam 46, lower coil pipe crossbeam 48, vertical support frame spare 50 and 52.Support with

crossbeam

46 and 48, vertical support frame spare 50 and 52 provides the structure of the pipe group of oldered array in the chamber 14 of storage tank 12.Known but pipe that illustrate in the drawings separates part and is placed in every group between the adjacent pipe 32 in prior art, thus the horizontal and vertical position of holding tube 32 in pipe group 40 and 42.

Each all has three pipe groups 40,42 and 43 of vertically piling coil pipe among Fig. 2 heap 51 and 53.More particularly, coil pipe heap 51 links to each other with 57 with 43 usefulness splice plates 55 with every pair of pipe group 40,42 of 53.Each pipe group 40,42 or 43 has first vertical support member 50 and second vertical support member 52, and goes up coil pipe crossbeam 46 and lower coil pipe crossbeam 48, and these crossbeam horizontal-extendings are between first and second vertical support member 50 and 52.In the figure, coil spring assembly 70 is illustrated in the external angle of the pipe group 43 of first coil pipe heap 51, second coil spring assembly 72 is illustrated in the external angle of the pipe group 43 of second coil pipe heap 53, and

coil spring assembly

70 and 72 is all on the bight or bight support of corresponding support 50 and 52.

Coil spring assembly

70 and 72 provides pipe group 43 power vertically upward that makes, and on an end of pipe group 43, Guan Zuke does vertically to move freely at least.

In Fig. 4, clearly show that the device of

coil spring assembly

70 and 72 more with helical spring and channel-section steel device 60.In the figure, can provide channel-section steel or I-beam 62 support member as

coil spring assembly

70 and 72, channel-section steel 62 has upper surface 64, first end 66 and second end 68.First coil spring assembly 70 is placed on the upper surface 64 of first end 66, and second spring assembly 72 is placed on the upper surface 64 of second end 68.The bight support of pipe group 43 or the lower limb of vertical support frame spare 50 or 52 are placed on the corresponding upper end 74 and 76 of spring assembly 70 and 72.In the figure, channel-section steel 62 is as the support member of spring assembly 70 and 72.Under the situation of Fig. 2, can in the another kind design, it then may be the end in storage tank chamber 14 this design as the support on coil pipe heap 51 and 53 bases.Therefore,

spring assembly

70 and 72 position can be positioned to support any amount of pipe group in the coil pipe heap obviously, and these Guan Zujun have the vertical free degree above these springs.

At the special construction of spring assembly 70 shown in Fig. 5,6 and 7 and 72, they express spring assembly 70 with exploded view.Because

spring assembly

70 and 72 is identical, therefore only describe spring assembly 70, but this description also is applicable to spring assembly 72.Spring assembly 70 is accumulation formula designs of a plurality of members.Cover 78 down and have first metal section 84 of tape channel 81, second metal section 82 and the separation sleeve 80 between isolated

core

83 and 85 with passage 89.Isolated core 83 and passage 81 couplings, second isolated core 85 and passage 89 couplings are clipped between cover section 82 and the following cover section 84 cover 80.Disk 87 with hole 91 is placed between the 3rd cover the section 93 and second cover section 82 with passage 95.Second isolated core 85 has the hole of aiming at disk hole 91 79.Helical spring 88 be placed on bar 86 around, and extend to down in cover 78 the passage 95.Last cover 90 has the last pipeline section 92 of tape channel 94 and has the lower tube section 101 of path 10 3.Isolated core 105 has on the path 10 7, the second isolated core 109 and has passage 111, the second separation sleeves 113 and be placed between isolated core 105 and 109.Passage 94 couplings of isolated core 105 and pipeline section 92, path 10 3 couplings of following isolated core 109 and lower tube section 101, cover 113 is fixed between pipeline section 92 and 101.Second disk 115 has the hole of aiming at isolated core hole 111 117, and it and bar 86 mate.Disk 115 is fixed at the end of cover section 101, to support the spring that has bar 86 88 that can move in the hole of aiming at 111,117 and 107.In illustrated this spring assembly 70, following cover 78 and last cover 90 are typically expressed as has the cylindrical of circular cross-section, yet that the shape of this cover is not limited only to is cylindrical.

Fig. 8 and 9 illustrates the upward cover 90 of spring assembly 70 and covers 78 interior another kind of spring designs 100 down.In this design, a plurality of Bels (Belleville) pad is deposited on passage 95 bars 86, in order to coil 115 and last cover section 90 lift that makes progress to climbing power that is similar to helical spring 88 is provided, other to the device that rises, as pneumatic, surge or elastic device etc. all can be used for providing lift upwards for the pipe group of coil pack 16.

Figure 12 represents another design of spring assembly 70, wherein goes up angle support 162 and inferior horn support 164 and is used for restriction and support spring assembly 70.Frame member 50 in the figure has front surface 166 and side surface 168.Angular support frame 170 is made the sill 48 that surrounds on upper frame member 50 lower ends 172, and angular support frame 174 is made the entablature 46 that surrounds on lower carriage spare 50 upper ends 176.Last angle support 162 has vertical wall 178 and horizontal wall 180, and they connect together at joint 182.Known soldering in the vertical wall 178 usefulness prior arts, welding or riveted joint etc. are fixed on the front surface 166 and angular support frame 170 of upper frame member 50.Equally, following angular support frame 164 has vertical wall 184 and horizontal wall 186, and they connect together at joint 188 places.Vertical wall 184 is fixed near the front surface 166 of angular support frame 174 of lower carriage spare 50.

In the figure, the hypomere 84 of spring assembly, separation sleeve 80, second section 82, epimere 92, second separator 113 are compared with the round member shown in 6 with Fig. 5 with hypomere 101, all are rectangle.Yet these configurations can't be construed as limiting the function and the operation of each section of spring assembly 70.

Replace in the design at this, coil spring assembly 70 is placed and is operated between upper bracket horizontal wall 180 and the lower carriage horizontal wall 186, similar upper and lower support design is provided on the opposite end of the crossbeam 46 of

spring assembly

72 and 48, this is similar to spring assembly 70, does not therefore do special description here.The component class of Figure 12 is similar to the assembly of Fig. 4, but its horizontal positioned, to reduce the vertical height of the such coil pack of assembly as shown in Figure 2.In addition, it can also be seen that lower carriage 164 can be installed at the end or the chamber on the base portion 14 of storage tank 12, in the case, a coil pack is only arranged in storage tank 12.

In Fig. 1, sensor 130 is installed on storage tank 12 top edges 132.What sensor 130 was used for watching attentively ice coil pack 42 makes progress during development on pipe 32 moves.Being somebody's turn to do upwards mobile is the result of following at least various equilibrium of forces, and these power are: the weight of (1) coil pack 16 above

spring assembly

70 and 72, these coil packs can be one or more groups pipe assemblies; (2) weight of cooling fluid in the pipe 32 of the coil pack above

spring assembly

70 and 72; (3) from the power that makes progress of

spring assembly

70 and 72; (4) weight of the ice that on the pipe 32 of the coil pack above

spring assembly

70 and 72 16, forms; (5) buoyancy of the ice that on the pipe 32 of coil pack 16, forms.As can be seen: these power are with relevant with the liquid storage in the chamber 14 that covers coil pack 16 continuously, and what these power produced makes a concerted effort along with the quality of managing fluid in 32 changes with the amount that is formed on the ice on the pipe 32.The pipe group of

spring assembly

72 and 70 tops or organize 40,42 and 43 and must be able to vertically move freely can be accomplished this point by being included in the whole bag of tricks such as to flexibly connect on back

timber

46 and 48 or consider to organize to measure on the single end at pipe.

Sensor 130 is not an operation element in heat-storing device 10, and it only monitors the mobile or displacement that coil pack makes progress, and this moves the percentage that converts ice growth in the storage tank 12 to.The sensor 130 of specific type is a kind of selection, and the example of this sensor is the displacement transducer series 240 of Trans-Tek company.In addition, the displacement that makes progress can be used manual measurement, with calculation chart, curve map or illustrate and be converted in the chamber 14 percentage that freezes.

The example of this diagram curve shown in Figure 11, the percentage that freezes of wherein comparing with designed capacity completely is as the function of coil pack 16 displacements.Figure 11 illustrates as the percentage of ice volume theoretical or design, coil pack 16 vertical move and the growth of ice between correlation properties.In this curve map, coil pack 16 moves up 0.35 inch from or reference point at 0, grows up to the expectation ratio of the ice of per inch corresponding to coil pack.In the case, the coil pack 16 of free floating is subjected to sensor 130 supervision from the change in location of its reference position or assembling position.The special variable quantity of the coil pipe position of every kind of coil design or storage tank structure can change, but can proofread and correct.The variation of coil pack upright position reflected with chamber 14 in the relevant buoyancy of icing amount of liquid storage.

In the operation of the exemplary outer thawing system of Figure 10, heat reservoir 10 has and freezes circulation and utilize the ice-out circulation of heat energy storage.As mentioned above, the cooling fluid of the outer thaw cycle in chamber 14 will be delivered to the cooling coil 30 in downstream by pump 26, turn back to chamber 14 then and utilize again.In icing cycle period, because the density of ice will have a buoyancy on coil pack 16 less than the density of water.This buoyancy and spring synergy make coil pack 16 produce vertical moving.

In the case, single coil pack 16, particularly pipe group or assembly 40,42 and 43 mobile suffering restraints in the horizontal direction, however they are located on the

spring assembly

70,72 after the correction that allows to carry out vertically to move.In Fig. 1, this vertically moves by sensor 130 of proofreading and correct and monitors, sensor 130 by line 140 with output signal link a signal receiver, as the central processor CPU among Fig. 3 142.CPU 142 can receive the signal from sensor 130, and this signal is compared with the experimental data of icing percentage in the case 12.In addition, CPU 142 can provide an output signal for controller 144 by line 146, thereby provides direct control by 150 pairs of refrigeration systems 18 of line, closes refrigeration system 18 or start after case 12 is formed needed ice and freeze.In this exemplary control system, can think that the experimental data of control circulation is available, these data can offer control device 142, calculate or test with them.

The type of

spring assembly

70,72 can adopt helical spring shown in Fig. 5,6 and 7 or the Bel's pad shown in Fig. 8 and 9, but the output signal that is used for CPU will require the displacement of the expectation of this class spring assembly, special sensor 130 assemblies and coil pack 16 is proofreaied and correct.Signal receiver that this is special and control circuit can change, and to adapt to available equipment, the circuit of Fig. 3 is only made example usefulness, and the unconfined meaning.Vertical displacement amount in addition is available manually to be measured, and the icing amount in the chamber 14 directly can be compared with experimental data and reading from chart, curve.

When the method with diagram and description has illustrated special embodiment of the present invention, also can make variations and modifications obviously.Therefore, the present invention in the appended claim has covered these modifications and variations, and they all can fall within the scope and spirit of the present invention.

Claims

1. measure the assembly that freezes and measure in the heat-storing device for one kind, said apparatus have the holding chamber that keeps liquid storage, in above-mentioned holding chamber can be freezing liquid storage, the coil pack of the liquid storage in the freezing above-mentioned holding chamber, above-mentioned coil pipe can vertically move, and above-mentioned measurement assembly comprises:

For above-mentioned coil pack provides spring assembly to climbing power;

Above-mentioned coil pack has top and bottom, and above-mentioned spring assembly to climbing power is positioned at at the end of above-mentioned coil pack, in order to the vertical above-mentioned lift that makes progress that moves above-mentioned coil pack to be provided;

Above-mentioned freezing liquid storage on above-mentioned coil pack provides buoyancy to above-mentioned coil pack;

In above-mentioned chamber, measure the sensor cluster of the vertical displacement of above-mentioned coil pack; With

Read central processor CPU, the above-mentioned ice amount note in the above-mentioned chamber is made the percentage of design capacity and above-mentioned cryogenic liquid storage amount with respect to icing amount displacement, in above-mentioned chamber of above-mentioned coil pack.

2. a kind of assembly of measuring in the heat-storing device amount of freezing as claimed in claim 1, wherein above-mentioned spring assembly have at least one provides helical spring to climbing power.

3. a kind of assembly of measuring the amount of freezing in the heat-storing device as claimed in claim 2, wherein above-mentioned spring assembly has at least one provides above-mentioned Bel to climbing power (Belleville) pad.

4. a kind of assembly of measuring the amount of freezing in the heat-storing device as claimed in claim 1, the vertical displacement of the above-mentioned coil pack of wherein above-mentioned measurement is that a sensor cluster is measured.

5. a kind of assembly of measuring the amount of freezing in the heat-storing device as claimed in claim 4, wherein the sensor assembly provides a signal, said modules also comprises central processing unit and UNICOM's line of received signal, and above-mentioned UNICOM line connects the sensor assembly and above-mentioned signal receives central processing unit;

Control device, above-mentioned UNICOM line receives central processing unit with above-mentioned signal and is connected on the above-mentioned control device;

Above-mentioned signal receives central processing unit work to provide an output signal to the above-mentioned control device that shows the amount of freezing in above-mentioned holding chamber, and this signal is the function of the sensor signal and coil pack vertical displacement.

6. a kind of assembly of measuring the amount of freezing in the heat-storing device as claimed in claim 1, the above-mentioned coil pack vertical displacement of wherein above-mentioned measurement is manually measured.

7. a kind of assembly of measuring the amount of freezing in the heat-storing device as claimed in claim 1 also comprises cooling system, cooling fluid and conducting tube,

Above-mentioned cooling system work drops on the needed temperature with the temperature with above-mentioned cooling fluid,

Above-mentioned coil pack is linked on the above-mentioned cooler by above-mentioned conducting tube, in order to above-mentioned cooler is connected on the above-mentioned coil pack,

Above-mentioned coil pack has at least one pipe group, and this pipe group has a plurality of loops in order to the above-mentioned cooling fluid of UNICOM,

Above-mentioned cooling fluid is delivered to the aforementioned tube group, thus the above-mentioned liquid storage in the freezing above-mentioned holding chamber.

8. a kind of assembly of measuring the amount of freezing in the heat-storing device as claimed in claim 7, wherein above-mentioned coil pack has a plurality of pipe groups, each pipe group has top and bottom, the aforementioned tube group positioned vertical of above-mentioned coil pack, provide above-mentioned spring assembly to climbing power at the bottom of of aforementioned tube group, above-mentioned aforementioned tube group to climbing power spring assembly top can vertically move when freezing in above-mentioned holding chamber.

9. a kind of assembly of measuring the amount of freezing in the heat-storing device as claimed in claim 8, wherein above-mentioned holding chamber has a base portion, above-mentioned spring assembly to climbing power is placed on the base portion of above-mentioned holding chamber, and the above-mentioned coil pack of above-mentioned spring assembly top to climbing power can vertically move when icing in above-mentioned holding chamber and on the above-mentioned coil pack.

10. measure the method for freezing in the ice heat-storing device for one kind, this device have one keep in case, the above-mentioned maintenance case liquid storage, in above-mentioned liquid storage in order to coil pack freezing above-mentioned liquid storage, that have top and bottom, cooling fluid, cool off above-mentioned cooling fluid system, with above-mentioned cooling system be connected on the above-mentioned coil pack, with above-mentioned cooling fluid is connected on above-mentioned coil pack and the above-mentioned storage tank, with the pipeline of the liquid storage in the freezing above-mentioned case, said method comprises:

Provide can be for vertical movement above-mentioned coil pack,

The spring assembly of generation to climbing power is provided,

Above-mentioned spring assembly to climbing power is placed on the bottom of above-mentioned coil pack, thereby vertically moves above-mentioned coil pack,

Displacement transducer is provided, the above-mentioned vertical displacement of the above-mentioned coil pack of above-mentioned displacement sensor,

Provide with above-mentioned case in freeze relevant coil pipe vertical displacement central processor CPU and

Make above-mentioned coil pipe displacement of measuring and icing being related in the above-mentioned case, to indicate the icing amount in the above-mentioned case.