CN204693896U - Open type earth's surface water source heat pump water-fetching device - Google Patents
Open type earth's surface water source heat pump water-fetching device Download PDFInfo
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- CN204693896U CN204693896U CN201520076416.1U CN201520076416U CN204693896U CN 204693896 U CN204693896 U CN 204693896U CN 201520076416 U CN201520076416 U CN 201520076416U CN 204693896 U CN204693896 U CN 204693896U
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Abstract
The utility model relates to a kind of open type earth's surface water source heat pump water-fetching device.Involved device comprises the source pump connected successively, system of removing sand, water pump, intake pipe and water intake, and described water intake is movable to be arranged on intake pipe.The utility model passes through system optimization, propose a kind of water intake system that can realize extracting the former water of different depth, to obtain the water body that the lower and temperature of silt content is comparatively suitable for, object reduces the water intaking energy consumption that causes of sand cleaning machine and improves water source heat pump system efficiency, improve the overall efficiency level of system to greatest extent, economical operation and control simple and convenient.
Description
Technical field
The utility model relates to central air-conditioning system technical field, particularly a kind of water intake system of surface water source heat pump air-conditioning.
Background technology
There are following three key characters in surface water water body: one is due to factor impacts such as rainy season, dry season or reservoir fillings, causes surface water water level to have dividing of flood period and dry season; Two is that the silt content of water body exists the three-dimensional Distribution Phenomena raised gradually from top to bottom; Three is top-down laminations of water temperature of water body.
Open type earth's surface source heat pump is that directly surface water is introduced source pump heat exchanger carries out heat exchange (as shown in Figure 1), water body is containing the husky heat exchange property not only affecting source pump, also have a strong impact on (water pump assembly weares and teares by sand grain) producing the service life of source pump and annex thereof, this directly affect water pump assembly and miscellaneous equipment can safety, stable operation.Therefore, in the design of surface water water intake engineering, usually be provided with a high position, (flood period utilizes high-order intake pipe to fetch water to low level intake pipe, low level intake pipe is utilized dry season to fetch water), to obtain the supernatant of water body, object is increase system service life, reduces the energy consumption that sand eliminator causes simultaneously.
As everyone knows, the coefficient of performance of water temperature to water source heat pump units has material impact, and as the refrigeration host computer of certain brand model, when during cooling condition, cold water intaking temperature reduces by 1 DEG C within the specific limits, unit performance coefficient COP can improve about 10%.So select suitable depth of water place water intaking, the energy consumption for water source heat pump units has material impact.
Chinese patent (patent No. is 201320004198.1) discloses a kind of anti-silt water-fetching head, it offers water inlet by the upper surface at water-fetching head, overcome prior art when fetching water because suction concentrates under water, produce powerful suction disturbance river sediment, the problem that water inlet silt content is large; Offer sediment ejection opening at the lower surface of water-fetching head, and be hinged with limit-type valve plate in sediment ejection opening position, when water pump stops absorbing water, can automatically open sediment ejection opening sand discharge.
Chinese patent (patent No. is 201220298499.5) discloses a kind of surface water water resource heat pump water-fetching head system, which employs Multistage filtering device and back-flushing structure design, object is can impurity effectively in filtered water, improve feedwater quality, what ensure water suction system supplies water stability.
But above-mentioned patent is all improve from water intake structure, to obtain the former water of comparatively low silt content, do not consider different water depth place, the feature that water body silt content is different.And how above-mentioned utility model patent takes the suitable overall efficiency problem of water temperature raising heat pump in different water depth place if well not solving.The utility model proposes a kind of water intake system and the progress control method thereof that can realize extracting the former water of different depth for this reason, first distribution of water temperature and the silt content of different depth is obtained, by heat pump efficiency and calculation of head losses, draw heat pump air conditioner main frame and cooling circulating water pump energy consumption respectively, the comprehensive energy consumption value of water source heat pump units under different water depth is drawn by first derivative and couple solution Computing Principle, thus determine optimum depth, eventually through PID controller, signal is passed through fixed mount, pass to movable stand, make water intake automatically arrive optimum depth place.This system can obtain optimum depth position automatically eventually, and overall reduction water source heat pump units energy consumption, improves the overall efficiency of opened water source heat pump system.
Summary of the invention
For defect or the deficiency of prior art, the utility model provides a kind of open type earth's surface water source heat pump water-fetching device.
Open type earth's surface water source heat pump water-fetching device provided by the utility model comprises the source pump connected successively, system of removing sand, water pump, intake pipe and water intake, and described water intake is movable to be arranged on intake pipe.
Described water intake is arranged on intake pipe by arrangement for adjusting height, described arrangement for adjusting height comprises fixed mount and outer tube, described outer tube is movable is sleeved on water intake end, and described water intake is arranged on outer tube, and described outer tube is movable to be arranged on fixed mount.
The described system of removing sand comprises one-level sand cleaning machine, secondary sand cleaning machine and three grades of sand cleaning machines, and one-level sand cleaning machine, in parallel between secondary sand cleaning machine and three grades of sand cleaning machines.
When utilizing said apparatus to fetch water, can according to result of calculation, select water intaking minimum energy dissipation and be suitable for the degree of depth of fetching water, open type earth's surface water source heat pump water-fetching minimum energy dissipation and being suitable for depth computing method of fetching water comprises:
By to (formula 1) couple solution, solve source pump and cooling circulating water pump energy consumption and minimum of a value and be suitable for the degree of depth of fetching water:
Formula 1;
In formula 1:
H is the depth of water, 0≤h≤60 meter;
A
1, A
2, A
3for the temperature T under different depth h and respective depth
hfit curve equation T
h=A
1exp (-h/A
2)+A
3in parameter;
A
4, A
5a
6, A
7for different temperatures T
hwith the source pump Energy Efficiency Ratio COP (T under relevant temperature
h) fit curve equation Cop (T
h)=A
4+ A
5/ { 1+exp [(T
h-A
6)/A
7] in parameter;
A
8, A
9, A
10for the turbidity S under different depth h and respective depth
hfit curve equation S
h=A
8-A
9× A
10 hin parameter;
A
11, A
12, A
13span respectively, for one-level sand cleaning machine, A
11, A
12, A
13value is respectively 0.9,0.94,1.1; For secondary sand cleaning machine, A
11, A
12, A
13value is respectively 1.1,0.96,1.3; For three grades of sand cleaning machines, A
11, A
12, A
13value is respectively 1.3,0.97,1.4;
C is that specific heat of water holds;
Δ t is the difference of dry point temperature and source pump cooling water leaving water temperature; Generally get 5 DEG C;
Q is source pump cooling load, is generally constant, and span is 6000-30000kW (generally having equipment manufacturer to provide);
Q
alwaysfor source pump total energy consumption.
According to the turbidity value at h=10 rice, select the sand cleaning machine of corresponding progression, when turbidity is less than 14NTU, select the first desander; When turbidity value gets 14-18NTU, select the second desander, when turbidity value is greater than 18NTU, select the 3rd desander.The utility model passes through system optimization, propose a kind of water intake system that can realize extracting the former water of different depth, to obtain the water body that the lower and temperature of silt content is comparatively suitable for, object reduces the water intaking energy consumption that causes of sand cleaning machine and improves water source heat pump system efficiency, improve the overall efficiency level of system to greatest extent, economical operation and control simple and convenient.
Accompanying drawing explanation
Fig. 1 feature water temperature is with Variation Characteristics of Water Depth matched curve;
Fig. 2 unit COP varies with temperature rule matched curve;
Fig. 3 feature water turbidity is with Variation Characteristics of Water Depth matched curve;
The structural reference schematic diagram of the device of Fig. 4 embodiment;
Detailed description of the invention
The utility model provides the computational methods of the overall energy consumption of a set of calculating different water depth and realizes system, thus determines best water intaking position, thus improves the overall efficiency of water source heat pump units.
The derivation of the utility model formula 1 is as follows:
Step one, utilizes FLUENT software for calculation simulated target water body water intake effective range (10m × 20m × 60m) interior thermo parameters method;
Step 2, by the Temperature Distribution stereogram obtained in step one, import TECPLOT software, extract the water temperature of different depth, draw the temperature distributing rule of target water body, according to optimal fitting degree principle, select Exp-Dec1 models fitting temperature distribution history (see figure 1), matched curve is T
h=A
1exp (-h/A
2)+A
3, wherein T
hrepresentation temperature, h represents the depth of water;
Step 3, under measuring different temperatures, source pump Energy Efficiency Ratio COP (as shown in Figure 2), according to optimal fitting degree principle, selects Boltzmann model, show that fit curve equation is: Cop (T
h)=A
4+ A
5/ { 1+exp [(T
h-A
6)/A
7], finally show that the power consumption values of source pump is W under different water depth
1=Q (1+1/Cop), Q span is 6000-30000kW (generally having equipment manufacturer to provide)
Step 4, the cool cycles water yield calculated required for source pump by heat exhaust is M=W
1/ (c Δ t), wherein c is that specific heat of water holds, and Δ t is the difference of dry point temperature and source pump cooling water leaving water temperature, and general value is 5 DEG C;
Step 5, by the turbidity value under actual measurement water body different depth, according to optimal fitting degree principle, select Aysmpotic1 matching to draw the turbidity distribution curve (as shown in Figure 3) of different water depth, matched curve is: S
h=A
8-A
9× A
10 h;
Step 6, according to the turbidity value at Haze curve 10 meters of, selects dissimilar sand cleaning machine, when turbidity is less than 14NTU, selects the first desander; When turbidity value is positioned at 14-18NTU, select the second desander, when turbidity value is greater than 18NTU, select the 3rd desander; Thus determine loss of flood peak amount Δ H further, its empirical equation logical,
calculate Δ H, the energy consumption of the circulating cooling water yield determination recirculated cooling water pumping loss determined according to step 4 is: W
2=M Δ H
Step 7, Q
always=W
1+ W
2, bring above formula into, namely show that overall energy consumption is the function of the depth of water,
, by Metlab minimum of a value couple solution computational process, solve the minimum of a value that heat pump air conditioner main frame and cooling circulating water pump energy consumption are closed, thus determine the depth of water of this position, be optimum depth position;
Embodiment:
As shown in Figure 4, this embodiment provides a kind of concrete open type earth's surface water source heat pump water-fetching device and progress control method thereof, and the device provided comprises water intake system, jacking system and system of removing sand;
Described regulator control system, is characterized in that: energy consumption calculation module 14 is connected with water intake 11; PID controller 15 is connected with fixed mount 12; Energy consumption calculation module 14 is connected with fixed mount 15.
Described water intake system is made up of water pump 7, aqueduct 8, inner sleeve 9, outer tube 10 and water intake 11; Described jacking system is made up of fixed mount 12 and adjustable shelf 13.
Described water intake system, is characterized in that: water pump 7 is connected with aqueduct 8; The cannula system that inner sleeve 9 and outer tube 10 form, is connected with aqueduct 8 by inner sleeve 9; Water intake 11 is connected with outer tube 10.
Described jacking system, is characterized in that: fixed mount 12 is fixed on riverbed, and adjustable shelf 13, by the guide rail on fixed mount 12, slides up and down along fixed mount 12 is parallel.Outer tube 10 is fixed on adjustable shelf 13, can slide up and down together with adjustable shelf 13 along the guide rail parallel on fixed mount 12.
Described system of removing sand, is characterized in that: it is made up of the first sand cleaning machine 1, second sand cleaning machine 3, the 3rd sand cleaning machine 5, first valve 2, second valve 4, the 3rd valve 6 and the pipeline that connects it; After described first sand cleaning machine 1 and the first valve 2, described second sand cleaning machine 3 and the second valve 4, described 3rd sand cleaning machine 5 and the 3rd valve 6 are first connected in series respectively, then be connected in parallel; Described first sand cleaning machine 1, second sand cleaning machine 3, the 3rd sand cleaning machine 5 three have different efficiency of removing sand.
The open type earth's surface water source heat pump water-fetching system cloud gray model control method provided is characterized in that: the distribution of water temperature and the silt content that first obtain different depth, by heat pump efficiency and calculation of head losses, draw heat pump air conditioner main frame and cooling circulating water pump energy consumption respectively, the comprehensive energy consumption value of water source heat pump units under different water depth is drawn by first derivative and coupling Computing Principle, thus determine optimum depth, eventually through PID controller, signal is passed through fixed mount, pass to movable stand, make water intake automatically arrive optimum depth place.This system can obtain optimum depth position automatically, and overall reduction water source heat pump units energy consumption, improves the overall efficiency of opened water source heat pump system.
Owing to requiring to be less than or equal to 10mg/L to the permission silt content of water source heat pump units water inlet in relevant criterion, and most of surface water all can not reach this requirement, therefore usually in diversion system, sand-removal device need be installed, but sand-removal device efficiency is higher, resistance is larger, causes water pump energy consumption higher.So in order to reduce the energy consumption that sand-removal device causes, the less sand-removal device of the relatively low resistance of efficiency of selecting when extracting surface water supernatant to remove sand can meet water quality requirement.Meanwhile, there is water temperature delamination phenomenon in surface water, and different inflow temperature has material impact to water source heat pump units performance, so it is suitable to extract water body water temperature, can reduce source pump energy consumption.In order to obtain the raising of whole system efficiency, the utility model being provided with can extract the water intake system of different water depth place water body, and according to the silt content of different water body, the sand-removal device that efficiency of selection is different removes sand, calculate the minimum depth of water of energy consumption eventually through coupling, determine the suitableeest water intaking degree of depth.Specific works flow process is as follows:
Step one, utilizes FLUENT software for calculation simulated target water body water intake effective range (10m × 20m × 60m) interior thermo parameters method;
Step 2, is extracted the water temperature of different depth, draws the temperature distributing rule of target water body, matching temperature distribution history by TECPLOT the poster processing soft;
Step 3, by Temperature Distribution, calculates the unit eer (COP) under different temperatures, draws energy consumption curve and the heat exhaust of source pump under different water depth;
Step 4, calculates the cool cycles water yield required for source pump by heat exhaust;
Step 5, by the turbidity value under actual measurement water body different depth, matching draws the turbidity distribution curve of different water depth;
Step 6, according to Haze curve distribution, selects dissimilar sand cleaning machine, determines loss of flood peak amount, the energy consumption curve of the circulating cooling water yield determination recirculated cooling water pumping loss simultaneously determined according to step 4;
Step 7, by first derivative and coupling Computing Principle, solves the minimum of a value that heat pump air conditioner main frame and cooling circulating water pump energy consumption are closed, thus determines the depth of water of this position, be optimum depth position;
Step 8: by PID controller (15), adjustment adjustable shelf (13), outer tube 10 is driven to slide up and down along the guide rail parallel on fixed mount 12 together, water intake 11 is made to be in the minimum depth of water place water intaking of corresponding depth of water place water intaking selection energy consumption, the valve open simultaneously will be connected in series with selected sand-removal device, all the other valve closings.
To sum up, the utility model passes through system optimization, propose a kind of water intake system that can realize extracting the former water of different depth, to obtain the water body that the lower and temperature of silt content is comparatively suitable for, object reduces the water intaking energy consumption that causes of sand cleaning machine and improves water source heat pump system efficiency, improve the overall efficiency level of system to greatest extent, economical operation and control simple and convenient.
Concrete outcome is as follows:
Certain water source heat pump system, source pump refrigeration duty is Q 6000kW, and air conditioning cooling water supply backwater temperature difference is Δ t 5 DEG C.The Temperature Distribution at different water depth place is obtained by FLUNET numerical simulation, extract different water depth place temperature value (extracting a bit every 0.5 meter) by TECPLOT, matching temperature with depth profile curve is: T=35.44exp (-h/30.25)+4.52;
Relation curve between matching water temperature and system synthesis Energy Efficiency Ratio (COP) is Cop=2.97+4.11/ (1+exp ((35.44exp (-h/30.25)-30.56)/4.74).
Simultaneous computer group heat exhaust, its computing formula is W
1=5000 (1+1/Cop), corresponding cooling water circulation amount computing formula is: M=W
1/ (4.2 × 5).
By actual measurement different depth water turbidity value, show that the fitting formula of turbidity and the depth of water is: S=38.18-28.87 × 0.97
h, being 16.89NTU by calculating the turbidity value at 10 meters of, minding between 14-18NTU, therefore select the second desander, simultaneously as follows according to the loss of flood peak amount empirical equation determination loss of flood peak: Δ H=1.1S
0.96+ 1.3, the energy consumption of the circulating cooling water yield determination recirculated cooling water pumping loss then determined is W
2=M Δ H, certainty annuity energy consumption total losses is: Q
always=W
1+ W
2, final arrangement show that the functional relation of the overall energy consumption of unit and the depth of water is:
Drawn by Metlab minimum of a value couple solution computational process, when h value is 9.91m time, system total energy consumption Q
alwaysminimum, be 1082.36kWh.By energy consumption calculation module and PID controller in regulator control system, control adjustable shelf 13 and drive outer tube 10 to slide up and down along the guide rail parallel on fixed mount 12 together, make water intake 11 be in the depth of water place water intaking of 9.91m; The second valve 4 that second sand cleaning machine 3 is connected in series is opened simultaneously, the first valve 2, to close with the 3rd valve 6.
In order to the credibility of further the result, test exemplary depth position by experiment, choose 5m, 7m, 9m, 9.91m, 11m, 13m, 15m seven degree of depth, testing water temperature is respectively 30 DEG C, 29.6 DEG C, 29.2 DEG C, 28.9 DEG C, 28.7 DEG C, 28.5 DEG C, 28.2 DEG C, bring above-mentioned formula into, under seven kinds of different temperatures, unit COP value is respectively 6.00,6.03,6.07,6.10,6.11,6.13,6.15.Therefore unit heat exhaust is respectively 7000kW, 6998KW, 6996KW, 6984kW, 6982KW, 6979KW, 6976kW, corresponding cooling water circulation amount is 1204m
3/ h, 1203m
3/ h, 1202m
3/ h, 1201m
3/ h, 1200m
3/ h, 1199m
3/ h, 1197m
3/ h.Pass through resistance calculation formulae, corresponding cooling water system always hinders loss and is respectively 16.0m, 16.7m, 17.5m, 18.0m, 18.6m, 19.4m, 20.0m head, determine that the second desander is opened by the loss of flood peak, finally show that source pump total energy consumption result is as shown in table 1.
As can be seen from following table, when the depth of water is the water intaking of 9.91m place, system total energy consumption is minimum, and minimum is 1080kWh, and with above-mentioned computational methods institute value 1082.36kWh, the difference of the two is within 5% scope.
Table 1
The foregoing is only an embodiment of the present utility model, not in order to limit the utility model, all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. an open type earth's surface water source heat pump water-fetching device, is characterized in that, device comprises the source pump connected successively, system of removing sand, water pump, intake pipe and water intake, and described water intake is movable to be arranged on intake pipe;
Described water intake is arranged on intake pipe by arrangement for adjusting height, described arrangement for adjusting height comprises fixed mount and outer tube, described outer tube is movable is sleeved on water intake end, and described water intake is arranged on outer tube, and described outer tube is movable to be arranged on fixed mount.
2. open type earth's surface water source heat pump water-fetching device as claimed in claim 1, is characterized in that, described in the system of removing sand comprise one-level sand cleaning machine, secondary sand cleaning machine and three grades of sand cleaning machines, and one-level sand cleaning machine, in parallel between secondary sand cleaning machine and three grades of sand cleaning machines.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076416.1U CN204693896U (en) | 2015-02-03 | 2015-02-03 | Open type earth's surface water source heat pump water-fetching device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520076416.1U CN204693896U (en) | 2015-02-03 | 2015-02-03 | Open type earth's surface water source heat pump water-fetching device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764252A (en) * | 2015-02-03 | 2015-07-08 | 华北电力大学（保定） | Open type ground surface water source heat pump water intaking minimal energy consumption and water depth calculation method and device |
| CN105926710A (en) * | 2016-06-21 | 2016-09-07 | 宝莲华新能源技术（上海）有限公司 | Novel water-source heat pump water getting device suitable for small-slope riverbed |
| CN106869242A (en) * | 2016-12-30 | 2017-06-20 | 西安建筑科技大学 | A kind of large-sized solar thermal storage tank integrated energy-saving water fetching device |
-
2015
- 2015-02-03 CN CN201520076416.1U patent/CN204693896U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104764252A (en) * | 2015-02-03 | 2015-07-08 | 华北电力大学（保定） | Open type ground surface water source heat pump water intaking minimal energy consumption and water depth calculation method and device |
| CN104764252B (en) * | 2015-02-03 | 2017-01-18 | 华北电力大学（保定） | Open type ground surface water source heat pump water intaking minimal energy consumption and water depth calculation method and device |
| CN105926710A (en) * | 2016-06-21 | 2016-09-07 | 宝莲华新能源技术（上海）有限公司 | Novel water-source heat pump water getting device suitable for small-slope riverbed |
| CN106869242A (en) * | 2016-12-30 | 2017-06-20 | 西安建筑科技大学 | A kind of large-sized solar thermal storage tank integrated energy-saving water fetching device |
| CN106869242B (en) * | 2016-12-30 | 2019-03-22 | 西安建筑科技大学 | A kind of large-sized solar thermal storage tank integrated energy-saving water fetching device |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151007 Termination date: 20170203 |