CN211716676U - Energy-saving and water-saving hot water supply system - Google Patents
Energy-saving and water-saving hot water supply system Download PDFInfo
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- CN211716676U CN211716676U CN201921909975.0U CN201921909975U CN211716676U CN 211716676 U CN211716676 U CN 211716676U CN 201921909975 U CN201921909975 U CN 201921909975U CN 211716676 U CN211716676 U CN 211716676U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 536
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 238000011084 recovery Methods 0.000 claims description 30
- 238000005485 electric heating Methods 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims 2
- 230000001502 supplementing effect Effects 0.000 abstract description 11
- 239000013589 supplement Substances 0.000 description 15
- 238000004321 preservation Methods 0.000 description 5
- 239000008399 tap water Substances 0.000 description 4
- 235000020679 tap water Nutrition 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003020 moisturizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
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Abstract
The utility model discloses an energy-saving and water-saving hot water supply system, which comprises a heat source, a main water tank, a water supply pipe, a hot water pump, a control device and a plurality of hot water tanks, wherein the heat source heats water in the main water tank, the water supply pipe is connected with the main water tank, and the hot water pump is arranged on the water supply pipe; the hot water tank comprises a tank body, a hot water supply branch pipe and an electric control valve; the hot water supply branch pipe is connected with the water supply pipe, the outlet of the hot water supply branch pipe is connected with the inner cavity of the box body, and the bottom of the box body is connected with a hot water outlet pipe for supplying water to user side water equipment; the electric control valve is arranged on the hot water supply branch pipe, a water level detection device is arranged in the box body, and the control device is respectively and electrically connected with the hot water pump, the electric control valve and the water level detection device. Compared with the prior art, the utility model has the characteristics of the automatic hydrothermal of supplementing of hot-water tank.
Description
Technical Field
The utility model relates to a hot water supply field, concretely relates to energy-conserving water conservation hot water supply system.
Background
With the continuous improvement of living standard and energy-saving and environment-friendly requirements, the application of a centralized (semi-centralized) hot water supply system is more and more common. By replacing the distributed hot water supply mode of an electric water heater using pure electric energy as a heat source, the application places of the concentrated semi-concentrated hot water supply system are gradually popularized to apartments and residences from traditional important public buildings, hotels, high-grade office buildings and the like. Therefore, the improvement of the energy-saving and water-saving efficiency of the centralized (semi-centralized) hot water supply system has extremely important significance for energy conservation and emission reduction of the country.
As shown in fig. 1, a typical hot water supply system at present is mainly composed of a heat source 100, a header tank 200, a hot water pump 300, a water supply pipe 400, a user side water using device 500, a circulation pipe 600, and the like. The operation principle is that the hot water in the main water tank 200 is delivered to each user side water using equipment 500 through a hot water delivery pipe 400 by a hot water pump 300; in order to ensure that the water temperature of the user side water using equipment 500 meets the design requirement of the specification at any time, the circulating pipe 600 is arranged to form a circulating pipe network, so that hot water can continuously circulate through the main water tank 200 to supplement the lost heat. However, in order to ensure that the temperature of the supplied hot water meets the design requirements of the specification at any time, the hot water needs to be circulated in the circulation pipe network for a long time without interruption, so that the operation energy consumption of the hot water pump 300 is increased; in addition, the external surface area of the circulating pipe network is large, so that the circulating pipe network generates a large amount of heat loss. In order to reduce the loss of thermal energy and electric energy generated by hot water circulation, some users adopt management measures for limiting the use in peak time, but the management measures can cause serious inconvenience of water use.
As shown in fig. 2, in part of small and medium-sized hot water supply projects, particularly reconstruction projects, the construction cost is reduced, the engineering construction is convenient, the circulating pipe 600 is eliminated, and the circulating pipe network is simplified. The operation principle is as follows: the hot water in the header tank 200 is supplied to each customer-side water using device 500 through a water supply pipe 400 by a hot water pump 300. In another scheme, an electrothermal film is laid between the inner part of the heat-insulating material of the water supply pipe 4 and the pipe. When the water temperature in the pipe is lower than the design requirement, the electric heating film is electrified to ensure the water temperature of the user side water using equipment 500. However, in this solution, the electric heating film is often used to heat the hot water in the water supply pipe to supplement the heat loss, but the heat for maintaining the water temperature of the water supply pipe network is derived from electric energy, which results in high heat production cost.
In some hot water supply systems, a hot water tank is arranged on a user side, and a user side water using device supplies hot water through the hot water tank, but the hot water tank needs to be manually opened to supplement hot water, so that the hot water supply system is inconvenient for users to use.
In view of the above, the applicant has made an intensive study on the above-mentioned defects in the prior art, and has made this invention.
SUMMERY OF THE UTILITY MODEL
The main object of the present invention is to provide an energy-saving and water-saving hot water supply system, which has the feature of automatic hot water supply to the hot water tank.
In order to achieve the above purpose, the solution of the present invention is:
an energy-saving and water-saving hot water supply system comprises a heat source, a main water tank, a water supply pipe, a hot water pump, a control device and a plurality of hot water tanks, wherein the heat source heats water in the main water tank, the water supply pipe is connected with the main water tank, and the hot water pump is arranged on the water supply pipe;
the hot water tank comprises a tank body, a hot water supply branch pipe and an electric control valve; the hot water supply branch pipe is connected with the water supply pipe, the outlet of the hot water supply branch pipe is connected with the inner cavity of the box body, and the bottom of the box body is connected with a hot water outlet pipe for supplying water to user side water equipment; the electric control valve is arranged on the hot water supply branch pipe, a water level detection device is arranged in the box body, the control device is respectively electrically connected with the hot water pump, the electric control valve and the water level detection device, the water level detection device comprises a first water level detector, a second water level detector and a third water level detector, and the first water level detector, the second water level detector and the third water level detector are sequentially arranged from low to high.
Further, the heat source is an electric heating device or a solar heating device.
Further, the hot water tank is a heat preservation water tank, and a heat preservation layer is arranged on the outer wall of the hot water tank body.
Further, the inner cavity of the box body is divided into a hot water supply cavity and a cold water recovery cavity, and the outlet of the hot water supply branch pipe is arranged above the cold water recovery cavity; the first water level detector, the second water level detector and the third water level detector are arranged in the hot water supply cavity; the water level detection device also comprises a fourth water level detector arranged at the lower part of the cold water recovery cavity; the hot water outlet pipe is connected to the bottom of the hot water supply cavity, the cold water recovery cavity is connected to the cold water outlet pipe at the bottom, an electric control three-way valve is arranged on the cold water outlet pipe, and the electric control three-way valve is respectively connected with the cold water outlet pipe, a cold water replenishing pipe and a cold water end of user side water utilization equipment; and the electric control three-way valves of the plurality of hot water tanks are respectively electrically connected with the control device.
Further, a fourth water level detector in the cold water recovery chamber is provided at the water level of the cold water recovery chamber 1/5; the first, second and third water level detectors in the hot water supply chamber are disposed at the water level of the hot water supply chamber 1/5, 1/2 and full water level, respectively.
Further, the user side water using equipment comprises one or more of a faucet, a shower and a washing device.
A control method of a separate energy-saving hot water supply system, comprising the steps of:
firstly, a water level detection device detects the hot water level in all hot water tanks in real time;
when the hot water level of one of the hot water tanks is detected to be lower than a first water replenishing threshold value, defining the water tank to be replenished;
opening a hot water pump to replenish water to a water tank to be replenished;
replenishing water to other water tanks with hot water level lower than a second water replenishing threshold value, wherein the second water replenishing threshold value is between the first water replenishing threshold value and the full water level threshold value;
after water replenishing is finished, the hot water pump is closed.
Further, the first water supplement threshold is 1/5 hot water level, and the second water supplement threshold is 1/2 hot water level.
Further, before the step I, a water level detector detects the water levels of cold water in cold water recovery cavities in all the hot water tanks in real time, and when the water level of the cold water in one of the hot water tanks is detected to be lower than a third water supplementing threshold value, the water utilization equipment on the user side is switched to supply cold water from municipal tap water; and step five, switching the water equipment at the user side from the supply of the cold water from municipal tap water to the supply of the cold water from the cold water recovery cavity.
Further, the third water supplement threshold is 1/5 cold water level.
After the structure is adopted, the utility model relates to an energy-conserving water conservation hot water supply system, it has following beneficial effect at least:
when the water level detection device in the hot water tank detects that the hot water level is lower than a first water replenishing threshold value detected by the first water level detector, the control device controls to open the hot water pump and an electric control valve of the hot water tank needing water replenishing to replenish water to the hot water tank. Thus, automatic water supplement of the single water tank is realized.
And secondly, when the control device supplies water to one of the hot water tanks, whether the hot water levels of other hot water tanks are lower than a second water supply threshold value detected by the second water level detector or not is detected, if so, the control device also opens an electric control valve of the hot water tank with the hot water level lower than the second water supply threshold value to supply water to the hot water tank, when the water supply level reaches a full water level threshold value detected by the third water level detector, the water supply is finished, the electric control valve is closed, and the hot water pump is closed after the water supply of all the hot water tanks is finished. Therefore, the hot water pump supplies water once, and hot water can be supplied to the hot water tank with all hot water levels lower than the second water supply threshold value, so that the starting times of the hot water pump and the heat loss in the water supply pipe are reduced.
Drawings
Fig. 1 and 2 are schematic structural views of a conventional hot water supply system.
Fig. 3 is a schematic structural view of an energy-saving and water-saving hot water supply system according to the present invention.
Fig. 4 is a schematic structural view of the hot water tank.
Fig. 5 and 6 are water supply flow charts of an energy-saving and water-saving hot water supply system according to the present invention.
In the figure:
a heat source 100; a main water tank 200; a hot water pump 300; a water supply pipe 400; a user side water using device 500; a circulation pipe 600;
a main water tank 1; a heat source 11; a water supply pipe 2; a hot water pump 21; a control device 3; a hot water tank 4; a hot water supply branch pipe 41; an electrically controlled valve 411; a case 42; a heat-insulating layer 421; a cold water recovery chamber 43; a cold water outlet pipe 431; an electrically controlled three-way valve 432; a fourth water level detector 433; a hot water supply chamber 44; a first water level detector 441; a second water level detector 442; a third water level detector 443; a hot water outlet pipe 444; a cold water replenishing pipe 45; and a user side water using device 5.
Detailed Description
In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.
As shown in fig. 1 to 6, the energy-saving and water-saving hot water supply system according to the present invention includes a heat source 11, a main water tank 1, a water supply pipe 2, a hot water pump 21, a control device 3, and a plurality of hot water tanks 4, wherein the heat source 11 heats water in the main water tank 1, the water supply pipe 2 is connected to the main water tank 1, and the hot water pump 21 is disposed on the water supply pipe 2;
the hot water tank 4 comprises a tank body 42, a hot water supply branch pipe 41 and an electric control valve 411; the hot water supply branch pipe 41 is connected with the water supply pipe 2, the outlet of the hot water supply branch pipe 41 is connected with the inner cavity of the box body 42, and the bottom of the box body 42 is connected with a hot water outlet pipe 444 for supplying water to the user side water equipment 5; the electric control valve 411 is disposed on the hot water supply branch pipe 41, a water level detection device is disposed in the tank 42, the control device 3 is electrically connected to the hot water pump 21, the electric control valve 411 and the water level detection device, respectively, the water level detection device includes a first water level detector 441, a second water level detector 442 and a third water level detector 443, and the first water level detector 441, the second water level detector 442 and the third water level detector 443 are sequentially disposed from low to high.
Thus, the utility model relates to an energy-conserving water conservation hot water supply system, when water level detection device in hot-water tank 4 detected that its hot water level is less than the first moisturizing threshold value that first water level detector 441 detected, controlling means 3 control is opened hot-water pump 21 and the electric control valve 411 of the hot-water tank 4 that needs to mend hot water carry out the moisturizing to hot-water tank 4. Thus, automatic water supplement of the single water tank is realized.
When the control device 3 supplements hot water to one of the hot water tanks 4, it is also detected whether the hot water levels of the other hot water tanks 4 are lower than the second water supplementing threshold detected by the second water level detector 442, if so, the control device 3 also opens the electric control valve 411 of the hot water tank 4 with the hot water level lower than the second water supplementing threshold to supplement water, when the water supplementing level reaches the full water level threshold detected by the third water level detector 443, the water supplementing is finished, the electric control valve 411 is closed, and the hot water pump 21 is closed after the water supplementing of all the hot water tanks 4 is finished. Therefore, the hot water pump 21 supplies water once, so that all the hot water tanks 4 with the hot water level lower than the second water supplementing threshold value can be supplemented with hot water, and the starting times of the hot water pump 21 and the heat loss in the water supply pipe 2 are reduced.
Preferably, the heat source 11 is an electric heating device or a solar heating device. The heating part of the electric heating device is arranged in the main water tank 1, so that the water in the main water tank 1 is heated. The heat source 11 may also be a solar heating device, such as a solar water heater, which can save electricity or fuel consumption.
Preferably, the hot water tank 4 is a heat preservation water tank. By arranging the hot water tank 4 as a heat preservation water tank, and arranging the heat preservation layer 421 on the outer wall of the tank body 42 of the hot water tank 4, the heat dissipation of hot water in the hot water tank 4 can be reduced.
Preferably, the inner cavity of the tank 42 is divided into a hot water supply cavity 44 and a cold water recovery cavity 43, and the outlet of the hot water supply branch pipe 41 is arranged above the cold water recovery cavity 43; the first, second and third water level detectors 441, 442 and 443 are disposed in the hot water supply chamber 44; the water level detecting means further includes a fourth water level detector 433 provided at a lower portion of the cold water recovery chamber 43; the hot water outlet pipe 444 is connected to the bottom of the hot water supply cavity 44, the cold water outlet pipe 431 is connected to the bottom of the cold water recovery cavity 43, an electric control three-way valve 432 is arranged on the cold water outlet pipe 431, and the electric control three-way valve 432 is respectively connected with the cold water outlet pipe 431, the cold water replenishing pipe 45 and the cold water end of the user side water equipment 5; the electric control three-way valves 432 of the plurality of hot water tanks 4 are respectively electrically connected with the control device 3.
In this way, the hot water in the hot water supply chamber 44 and the cold water in the cold water recovery chamber 43 are respectively supplied to the user-side water consuming device 5 through pipes, and when the water level in the cold water recovery chamber 43 is lower than the third water replenishing threshold value detected by the fourth water level detector 433, the control device 3 controls the electric control three-way valve 432 to connect the cold water replenishing pipe 45 with the cold water end of the user-side water consuming device 5, so as to ensure the continuous supply of the cold water.
When the water level of the hot water in the hot water cavity is lower than a first water replenishing threshold value, the control device 3 opens the electric control valve 411, and the hot water branch pipe 41 replenishes water; during water replenishing, cold water generated by natural heat dissipation of the long-time pipe wall in the hot water branch pipe 41 is poured into the cold water recovery chamber 43, and then hot water supplied by the hot water branch pipe 41 is poured into the hot water supply chamber 44 in a free overflow manner. After the water supplement of the hot water supply chamber 44 is finished, the control device 3 closes the corresponding electric control valve 411. Thus, cold water in the hot water supply branch pipe 41 is recycled, and waste of water and waste of heat when the traditional cold water drainage waits for hot water are avoided.
Preferably, the fourth water level detector 433 in the cold water recovery chamber 43 is provided at 1/5 level of the cold water recovery chamber 43; the first, second and third water level detectors 441, 442 and 443 in the hot water supply chamber 44 are disposed at the 1/5 water level, 1/2 water level and full water level of the hot water supply chamber 44, respectively. In order to prevent the cold water and the hot water in the cold water recovery chamber 43 and the hot water recovery chamber from being completely used, the first water level detector 441 and the fourth water level detector 433 are disposed at 1/5 level of the hot water supply chamber 44 and 1/5 level of the cold water recovery chamber 43, respectively. The second water level detector 442 is disposed at the 1/2 level of the hot water supply chamber 44 such that the hot water tank 4 for replenishing water is the hot water tank 4 that consumes half of the hot water, ensuring the effect of replenishing water. The control device 3 and the water level detector are the prior art, but not the key point of the scheme, and the control device 3 can adopt common control structures such as a PLC (programmable logic controller) or a singlechip and the like.
Preferably, the user side water consuming device 5 comprises one or more of a faucet, a shower, and a washing device. Such as hot and cold water valves, showers, dishwashers, washing machines, etc.
A control method of a separate energy-saving hot water supply system, comprising the steps of:
firstly, a water level detection device detects the hot water level in all the hot water tanks 4 in real time;
when the hot water level of one of the hot water tanks 4 is detected to be lower than a first water replenishing threshold value, defining the water tank to be replenished;
thirdly, the hot water pump 21 is opened to replenish water to the water tank to be replenished;
replenishing water to other water tanks with hot water level lower than a second water replenishing threshold value, wherein the second water replenishing threshold value is between the first water replenishing threshold value and the full water level threshold value;
after the water supplement is finished, the hot water pump 21 is closed.
Thus, when the control device 3 supplements water to the water tank to be supplemented with water, it will also detect whether the water level of the other hot water tanks 4 is lower than the second water supplementing threshold, and if so, the control device 3 also opens the electric control valve 411 of the hot water tank 4 with the water level lower than the second water supplementing threshold to supplement water, so as to reduce the number of times of starting the hot water pump 2121 and the heat loss in the water supply pipe 22.
Preferably, the first refill threshold is 1/5 hot water level and the second refill threshold is 1/2 hot water level. In order to ensure the normal use of hot water, the first water supplement threshold value setting needs to ensure that a certain hot water allowance needs to be reserved in the hot water tank 4. By setting the second water replenishment threshold to 1/2 hot water level, the hot water tank 4 that consumes half of the hot water can be replenished with water.
Preferably, the water level detectors detect the water levels of the cold water in the cold water recovery cavities 43 in all the hot water tanks 4 in real time before the step (r), and when the water level of the cold water in one of the hot water tanks 4 is detected to be lower than a third water supplementing threshold value, the water utilization equipment 5 on the user side is switched to supply the cold water from municipal tap water; the step (v) also comprises switching the user side water using equipment 5 from the municipal tap water supply to the cold water recovery cavity 43. Thus, the cold water formed by natural cooling in the hot water supply branch pipe 41 can be recovered, and the waste of water and the waste of heat when the traditional cold water discharge waits for hot water are avoided. Preferably, to ensure that cold water in the cold water recovery chamber 43 is prevented from running out, the third water replenishment threshold is 1/5 cold water level.
The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.
Claims (6)
1. An energy-saving and water-saving hot water supply system is characterized by comprising a heat source, a main water tank, a water supply pipe, a hot water pump, a control device and a plurality of hot water tanks, wherein the heat source heats water in the main water tank, the water supply pipe is connected with the main water tank, and the hot water pump is arranged on the water supply pipe;
the hot water tank comprises a tank body, a hot water supply branch pipe and an electric control valve; the hot water supply branch pipe is connected with the water supply pipe, the outlet of the hot water supply branch pipe is connected with the inner cavity of the box body, and the bottom of the box body is connected with a hot water outlet pipe for supplying water to user side water equipment; the electric control valve is arranged on the hot water supply branch pipe, a water level detection device is arranged in the box body, the control device is respectively electrically connected with the hot water pump, the electric control valve and the water level detection device, the water level detection device comprises a first water level detector, a second water level detector and a third water level detector, and the first water level detector, the second water level detector and the third water level detector are sequentially arranged from low to high.
2. An energy-saving and water-saving hot water supply system as claimed in claim 1, wherein the heat source is an electric heating device or a solar heating device.
3. The energy-saving and water-saving hot water supply system according to claim 1, wherein the hot water tank is a thermal insulation water tank, and an insulation layer is provided on an outer wall of a tank body of the hot water tank.
4. An energy-saving and water-saving hot water supply system as claimed in claim 1, wherein the inner chamber of the tank body is divided into a hot water supply chamber and a cold water recovery chamber, and the outlet of the hot water supply branch pipe is disposed above the cold water recovery chamber; the first water level detector, the second water level detector and the third water level detector are arranged in the hot water supply cavity; the water level detection device also comprises a fourth water level detector arranged at the lower part of the cold water recovery cavity; the hot water outlet pipe is connected to the bottom of the hot water supply cavity, the cold water recovery cavity is connected to the cold water outlet pipe at the bottom, an electric control three-way valve is arranged on the cold water outlet pipe, and the electric control three-way valve is respectively connected with the cold water outlet pipe, a cold water replenishing pipe and a cold water end of user side water utilization equipment; and the electric control three-way valves of the plurality of hot water tanks are respectively electrically connected with the control device.
5. An energy-saving and water-saving hot water supply system as claimed in claim 4, wherein a fourth water level detector in the cold water recovery chamber is provided at the water level of the cold water recovery chamber 1/5; the first, second and third water level detectors in the hot water supply chamber are disposed at the water level of the hot water supply chamber 1/5, 1/2 and full water level, respectively.
6. An energy and water saving hot water supply system as claimed in claim 1, wherein the user side water using equipment comprises one or more of a faucet, a shower and a washing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909975.0U CN211716676U (en) | 2019-11-07 | 2019-11-07 | Energy-saving and water-saving hot water supply system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921909975.0U CN211716676U (en) | 2019-11-07 | 2019-11-07 | Energy-saving and water-saving hot water supply system |
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| CN211716676U true CN211716676U (en) | 2020-10-20 |
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| CN201921909975.0U Expired - Fee Related CN211716676U (en) | 2019-11-07 | 2019-11-07 | Energy-saving and water-saving hot water supply system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873358A (en) * | 2019-11-07 | 2020-03-10 | 泉州市燃气有限公司 | Energy-saving and water-saving hot water supply system and water supply method thereof |
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2019
- 2019-11-07 CN CN201921909975.0U patent/CN211716676U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873358A (en) * | 2019-11-07 | 2020-03-10 | 泉州市燃气有限公司 | Energy-saving and water-saving hot water supply system and water supply method thereof |
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