CN210051204U - Water energy storage water distributor - Google Patents
Water energy storage water distributor Download PDFInfo
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- CN210051204U CN210051204U CN201920837832.7U CN201920837832U CN210051204U CN 210051204 U CN210051204 U CN 210051204U CN 201920837832 U CN201920837832 U CN 201920837832U CN 210051204 U CN210051204 U CN 210051204U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/14—Thermal energy storage
Abstract
The utility model discloses a water energy storage water-locator, this water-locator includes: the main connecting pipeline is arranged on two sides of one end of the main pipe and symmetrically arranged relative to the main pipe, and the main connecting pipeline is communicated with the main pipe; the middle part of the connecting branch pipe is communicated with one end of the main connecting pipeline, which is far away from the main pipe; and the water distribution structures are arranged at two ends of the connecting branch pipe and are communicated with the connecting branch pipe. The utility model discloses a water-locator can effectual reduction rivers to the impact of storing water when getting into the energy storage ware, impels the formation on thermocline to the mixed action through reducing probably to produce maintains the existence on thermocline, reduces the destruction to the thermocline, thereby guarantees the energy storage effect of cold and hot layering and energy storage ware.
Description
Technical Field
The utility model relates to a clean energy application technology field, in particular to water energy storage water-locator.
Background
In the water energy storage technology, the key problem is that the energy storage device is in a structural form which can prevent the stored water from being mixed with the returned hot water. To achieve the purpose, natural layering energy storage, multi-tank energy storage, labyrinth energy storage and diaphragm energy storage methods are commonly adopted at present. The natural layering energy storage method is simple and effective, and is the most economical and efficient method for ensuring the water energy storage system, the natural layering energy storage device needs to use a water distributor to smoothly introduce water into the energy storage device, and the existing water distributor cannot smoothly introduce water into the energy storage device.
SUMMERY OF THE UTILITY MODEL
The natural layering energy storage method is simple and effective, is the most economical and efficient method for ensuring the water energy storage system, the natural layering energy storage device needs to use a water distributor to stably introduce water into the energy storage device, and the design of the water energy storage diffuser is emphasized in the description.
An object of the utility model is to provide a water energy storage water-locator has solved the problem among the background art.
The utility model discloses a realize like this, a water energy storage water-locator, this water-locator includes:
the main pipe is provided with a main pipe,
the main connecting pipelines are arranged on two sides of one end of the main pipe and are symmetrically arranged relative to the main pipe, and the main connecting pipelines are communicated with the main pipe;
the middle part of the connecting branch pipe is communicated with one end of the main connecting pipeline, which is far away from the main pipe;
and the water distribution structures are arranged at two ends of the connecting branch pipe and are communicated with the connecting branch pipe.
The utility model discloses a further technical scheme is: the water distribution structure includes:
the middle part of the first connecting pipe is communicated with the connecting branch pipe;
the second connecting pipes are arranged at two ends of the first connecting pipe and are communicated with the first connecting pipe;
the middle part of the third connecting pipe is communicated with one end, far away from the first connecting pipe, of the second connecting pipe;
the fourth connecting pipe is arranged at two ends of the third connecting pipe and is communicated with the third connecting pipe;
and the middle part of the fifth connecting pipe is communicated with one end, far away from the third connecting pipe, of the fourth connecting pipe.
The utility model discloses a further technical scheme is: and water distribution holes are formed in the fifth connecting pipe, the distance between the water distribution holes is 108.8mm, and the aperture of each water distribution hole is 20 mm.
The utility model discloses a further technical scheme is: the length of the fifth connecting pipe is 6000 mm.
The utility model discloses a further technical scheme is: the first connecting pipe is 200mm in nominal diameter, the second connecting pipe is 150mm in nominal diameter, the third connecting pipe is 150mm in nominal diameter, the fourth connecting pipe is 125mm in nominal diameter, and the fifth connecting pipe is 125mm in nominal diameter.
The utility model discloses a further technical scheme is: the nominal diameter of the main pipe is 250mm, the nominal diameter of the main connecting pipeline is 200mm, and the nominal diameter of the connecting branch pipe is 200 mm.
The utility model discloses a further technical scheme is: the connection among the pipelines forming the water distributor is welded.
In the water energy storage technology, the key problem is that the energy storage device is in a structural form which can prevent the stored water and the return water from mixing. To achieve the purpose, natural layering energy storage, multi-tank energy storage, labyrinth energy storage and diaphragm energy storage methods are commonly adopted at present. The natural layering energy storage method is simple and effective, and is the most economical and efficient method for ensuring the water energy storage system.
a. Natural stratified energy storage
The density of water is temperature dependent, the lower the temperature the greater the density until the water temperature is 4 ℃ and the lower the water temperature is 3.9 ℃ the density decreases until frozen. Therefore, the low temperature water should be stably accumulated at the lowest portion of the accumulator, and the high temperature water should be accumulated at the highest portion of the accumulator. By stratification, the effect of density is used to separate hot water from cold water. For this purpose, a temperature gradient (thermocline) is created and maintained between the upper high-temperature zone and the lower low-temperature zone, the thermocline being the zone in which the water temperature varies from top to bottom, and this zone of water is called thermocline, and the lower, cold water is prevented from mixing with the upper, hot water by means of the stable thermocline.
An upper water distributor and a lower water distributor which are used for uniformly distributing water flow are arranged in the energy storage device. In order to realize the purpose of natural stratification, the heating return warm water is required to flow in or out from the upper diffuser all the time, and the cold water flows in or out from the lower diffuser, so that the up-and-down translation motion of the stratified water is formed as much as possible in the energy storage and discharge processes. In a naturally layered water energy storage device, the thermocline is an important factor influencing the cold-hot layering and the energy storage effect of the energy storage device. It is a cold and hot temperature transition layer formed by the natural heat conduction between cold and hot water. It can be thickened along with the prolonging of the storage time through the heat conduction of the water layer, the heat conduction of the water and the wall surface of the energy storage device and the heat conduction along the wall of the tank, thereby reducing the volume of the practical usable energy storage water and the usable energy storage. In the storage period of the energy accumulator, the change of the thermocline is a main index for measuring the energy storage effect of the energy accumulator. The thickness of the thermocline layer is preferably 0.2 to 0.4 m.
b. Water energy storage tank diffuser design
The naturally layered energy accumulator needs to use a diffuser to smoothly introduce water into the energy accumulator, and a gravity flow horizontally distributed along the bottom or top of the energy accumulator is generated by means of density difference instead of inertia force to form a temperature gradient layer which enables the mixing effect of cold water and hot water to be as small as possible. Therefore, in the design of the natural stratified water energy storage device, the design of the water distributor is particularly important, and the water distributor has a remarkable influence on the energy storage efficiency of the energy storage device. The designed air diffuser can realize better layering effect and stable inclined temperature layer.
When the energy discharging process starts, the energy water flow entering from the lower diffuser can cling to the bottom surface of the energy storage device due to high density under the condition of low water flow speed, and moves along the horizontal direction by means of density difference instead of inertia to form an inclined temperature layer in a pure heat conduction mode, so that convection mixing with the upper hot water is avoided. Similarly, at the beginning of the energy storage process, the hot water entering from the upper diffuser has a low density, and in the case of a low water flow rate, it floats on the surface of the energy water, moves in the horizontal direction, and also forms a temperature gradient layer in the form of pure heat conduction, avoiding convective mixing with the energy water stored below. Therefore, an initial inclined temperature layer is formed when energy storage and energy release are started, and in the subsequent process, if the flow rate of inlet water is large, the stable inclined temperature layer is damaged, so that cold and hot water are directly mixed, and the effective energy storage in the energy storage device is reduced.
The diffuser has the functions of reducing the impact on stored water when water flow enters the energy storage device by enabling the water flow to slowly enter the energy storage device in a density flow mode, promoting the formation of a thermocline, maintaining the existence of the thermocline by reducing the possible mixing effect and reducing the damage to the thermocline.
Within the range of 0-20 ℃, the density difference of water is not large, and the formed thermocline is not stable, so that the flow velocity of water flow passing through an inlet and an outlet of the diffuser is required to be small enough to avoid disturbance damage to the thermocline. This requires the determination of the appropriate Fr number and diffuser inlet height h, and a reasonable Re number to avoid the degradation of the thermocline quality.
c. Hydrodynamic characteristics of diffuser
The hydraulics of the thermocline can be determined by the Frandler (Fr) number and the Reynolds (Re) number, which are two important dimensionless criterion numbers.
① Fr criterion number
It represents a dimensionless criterion number of the ratio of inertial force to buoyancy force acting on the fluid. This criterion reflects the conditions under which the inlet water stream can form a dense stream. It is defined as:
Fr＝q/[gh
3(ρi-ρa)/ρa]
1/2
in the formula, Fr is the Frand number of the inlet of the diffuser;
q is the volume flow (m) per unit length of diffuser
3/m·s)；
g is the acceleration of gravity (9.8 lm/s)
2)；
h is the minimum inlet height (m) of the radiator;
ρ i is the inlet water density (kg/m)
3)；
ρ a is the density of the surrounding water (kg/m)
3)。
q＝Q/L
Wherein Q is throughMaximum flow Q/L (m) of diffuser
3/s)；
L is the effective length (m) of the diffuser.
When Fr is equal to l, the buoyancy force in the inlet water flow is larger than the inertia force, so that gravity flow can be well formed; when Fr is greater than 1, gravity flow can be formed; when Fr > is 2, the inertial flow is dominant, and the increase in inertial force effects produces significant mixing, and a slight increase in Fr results in a significant increase in mixing.
② Re criterion number
The water mixing of different temperatures (namely different densities) above and below the energy storage device causes the damage of the thermocline, which is caused by overlarge flow per unit length of the inlet diffuser, the fluid characteristic of the thermocline is expressed by Reynolds number (Re), and the physical meaning of the thermocline is the ratio of the inertia force of the fluid to the viscous force of the fluid. The number of the inlet Re of the diffuser is defined as follows:
Re＝q/ν
in the formula, Re is the Reynolds number of an inlet of the diffuser;
q is unit length water flow (m) of diffuser
3/m·s)；
v is the kinematic viscosity of the influent water (m)
2/s)。
For a given flow rate, the effective length of the diffuser can be adjusted to obtain the desired Re number.
The design of the diffuser should be controlled at a lower Re value, if the Re value is too large, the mixing of water and energy caused by inertial flow will be aggravated, so that the required capacity of the energy storage device will be increased, for the energy storage device with small height, the Re value is usually 200, and for the energy storage device with height greater than 5m, the Re value is usually 400-850.
The lower value of the inlet Re is beneficial to reducing the mixing effect at the inlet side of the thermocline, and the inlet Re value is generally selected to be 240-800-DEG C to achieve the ideal layering effect.
d. Design example of energy storage water distributor
The design example is a design of a water distributor of a heat storage water tank of a central air-conditioning project of Shanbei Gu-an-Shang nationality.
And (3) related parameters:
according to the structural characteristics of the heat storage water tank, the water tank is relatively high, which is beneficial to the formation of an inclined temperature layer in water heat storage, so that the Re number of the outlet of the water distributor is required to be less than 800.
The flow rate of only 2 energy storage water pumps is 240m during heat storage
3H, directly heating 45 deg.C water to 90 deg.C, and its kinematic viscosity is 3.26 x 10
-7m
2/s。
The maximum flow rate of the heat storage tank during heat release is 175m according to load balance
3H, entering the water pool at 45 ℃ and having a kinematic viscosity of 6.08 x 10
-7m
2/s。
The number of branch pipes at the tail end of the water distributor is 128, the length of each branch pipe is 2.835 meters, and the total length of the branch pipes of the water distributor is 362.88 meters.
And (4) checking the RE Fr number: fully meets the energy storage requirement
Checking Re and Fr
The utility model has the advantages that: the utility model discloses a water-locator can effectual reduction rivers to the impact of storing water when getting into the energy storage ware, impels the formation on thermocline to the mixed action through reducing probably to produce maintains the existence on thermocline, reduces the destruction to the thermocline, thereby guarantees the energy storage effect of cold and hot layering and energy storage ware.
Drawings
Fig. 1 is a schematic structural view of a water energy storage distributor provided by the present invention;
fig. 2 is a schematic structural diagram of a fifth connecting pipe provided by the present invention.
Reference numerals: 1. the water distributor comprises a main pipe, 2 main connecting pipelines, 3 connecting branch pipes, 4 water distribution structures, 41 first connecting pipes, 42 second connecting pipes, 43 third connecting pipes, 44 fourth connecting pipes, 45 fifth connecting pipes and 451 water distribution holes.
Detailed Description
Exemplary embodiments of the invention are described below with reference to the accompanying drawings, in which various details of embodiments of the invention are included to assist understanding, and which are to be considered exemplary only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the embodiments described herein can be made without departing from the scope and spirit of the invention. Also, descriptions of well-known functions and constructions are omitted in the following description for clarity and conciseness.
The first embodiment is as follows:
fig. 1-2 show a water distributor for energy storage of water, comprising:
the main pipe 1 is provided with a plurality of pipes,
the main connecting pipelines 2 are arranged on two sides of one end of the main pipe 1 and are symmetrically arranged relative to the main pipe 1, and the main connecting pipelines 2 are communicated with the main pipe 1;
the middle part of the connecting branch pipe 3 is communicated with one end of the main connecting pipeline 2, which is far away from the main pipe 1;
and the water distribution structures 4 are arranged at two ends of the connecting branch pipe 3 and are communicated with the connecting branch pipe 3.
The water distribution structure 4 includes:
a first connecting pipe 41, the middle of the first connecting pipe 41 is communicated with the connecting branch pipe 3;
a second connection pipe 42, the second connection pipe 42 being disposed at both ends of the first connection pipe 41 and communicating with the first connection pipe 41;
a third connecting pipe 43, the middle of the third connecting pipe 43 being communicated with one end of the second connecting pipe 42 away from the first connecting pipe 41;
a fourth connection pipe 44 disposed at both ends of the third connection pipe 43 and communicating with the third connection pipe 43;
and a fifth connecting pipe 45, wherein the middle part of the fifth connecting pipe 45 is communicated with one end of the fourth connecting pipe 44 far away from the third connecting pipe 43.
The fifth connecting pipe 45 is provided with water distribution holes 451, the distance between the water distribution holes 451 is 108.8mm, and the diameter of each water distribution hole 451 is 20 mm.
The length of the fifth connection pipe 45 is 6000 mm.
The first connection pipe 41 has a nominal diameter of 200mm, the second connection pipe 42 has a nominal diameter of 150mm, the third connection pipe 43 has a nominal diameter of 150mm, the fourth connection pipe 44 has a nominal diameter of 125mm, and the fifth connection pipe 45 has a nominal diameter of 125 mm.
The nominal diameter of the main pipe 1 is 250mm, the nominal diameter of the main connecting pipeline 2 is 200mm, and the nominal diameter of the connecting branch pipe 3 is 200 mm.
The connection among the pipelines forming the water distributor is welded.
When the water distributor is used, the two water distributors are symmetrically arranged on the upper part and the lower part of the energy accumulator, water flows into the water distributors through the main pipes 1 of the water distributors at the upper end and enters the energy storage tank through the water distribution holes 451, and water in the storage tank flows out through the main pipes 1 of the water distributors at the lower end to realize circulation; or the water flow enters the water distributor through the main pipe 1 of the water distributor at the lower end and enters the energy storage tank through the water distribution holes 451, and the water in the energy storage tank flows out through the main pipe 1 of the water distributor at the upper end to realize circulation.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a water energy storage water-locator which characterized in that: this water-locator includes:
a main pipe (1),
the main connecting pipelines (2) are arranged on two sides of one end of the main pipe (1) and are symmetrically arranged relative to the main pipe (1), and the main connecting pipelines (2) are communicated with the main pipe (1);
the middle part of the connecting branch pipe (3) is communicated with one end, far away from the main pipe (1), of the main connecting pipeline (2);
the water distribution structure (4) is arranged at two ends of the connecting branch pipe (3) and communicated with the connecting branch pipe (3).
2. The water distributor of claim 1, wherein: the water distribution structure (4) comprises:
a first connecting pipe (41), wherein the middle part of the first connecting pipe (41) is communicated with the connecting branch pipe (3);
a second connection pipe (42), the second connection pipe (42) being disposed at both ends of the first connection pipe (41) and communicating with the first connection pipe (41);
a third connecting pipe (43), wherein the middle part of the third connecting pipe (43) is communicated with one end of the second connecting pipe (42) far away from the first connecting pipe (41);
a fourth connection pipe (44), the fourth connection pipe (44) being disposed at both ends of the third connection pipe (43) and communicating with the third connection pipe (43);
and the middle part of the fifth connecting pipe (45) is communicated with one end, far away from the third connecting pipe (43), of the fourth connecting pipe (44).
3. The water distributor of claim 2, wherein: the fifth connecting pipe (45) is provided with water distribution holes (451), the distance between the water distribution holes (451) is 108.8mm, and the aperture of the water distribution holes (451) is 20 mm.
4. The water distributor of claim 2, wherein: the length of the fifth connecting pipe (45) is 6000 mm.
5. The water distributor of claim 2, wherein: the first connecting pipe (41) is 200mm in nominal diameter, the second connecting pipe (42) is 150mm in nominal diameter, the third connecting pipe (43) is 150mm in nominal diameter, the fourth connecting pipe (44) is 125mm in nominal diameter, and the fifth connecting pipe (45) is 125mm in nominal diameter.
6. The water distributor of claim 1, wherein: the nominal diameter of the main pipe (1) is 250mm, the nominal diameter of the main connecting pipeline (2) is 200mm, and the nominal diameter of the connecting branch pipe (3) is 200 mm.
7. The water distributor of claim 1, wherein: the connection among the pipelines forming the water distributor is welded.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837832.7U CN210051204U (en) | 2019-06-04 | 2019-06-04 | Water energy storage water distributor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920837832.7U CN210051204U (en) | 2019-06-04 | 2019-06-04 | Water energy storage water distributor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210051204U true CN210051204U (en) | 2020-02-11 |
Family
ID=69397197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920837832.7U Active CN210051204U (en) | 2019-06-04 | 2019-06-04 | Water energy storage water distributor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210051204U (en) |
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2019
- 2019-06-04 CN CN201920837832.7U patent/CN210051204U/en active Active
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