CN210690095U - Closed energy well energy measurement appearance - Google Patents

Closed energy well energy measurement appearance Download PDF

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Publication number
CN210690095U
CN210690095U CN201921655472.5U CN201921655472U CN210690095U CN 210690095 U CN210690095 U CN 210690095U CN 201921655472 U CN201921655472 U CN 201921655472U CN 210690095 U CN210690095 U CN 210690095U
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water
water tank
data
temperature
heat pump
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CN201921655472.5U
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祖国全
祖暄
郑烨钊
王超
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Anhui Fangzhou Technology Development Co ltd
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Anhui Fangzhou Technology Development Co ltd
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Abstract

The utility model discloses a closed energy well energy measuring apparatu, including water tank, heat pump set, circulating water pump, temperature sensor, flow sensor and data processor. The heat pump unit has two functions of cooling and heating, is used for controlling the water temperature of the water tank and ensures that the water temperature fluctuates within a designed temperature range. The two temperature sensors respectively measure the outlet water temperature and the return water temperature of the water tank, and the flowmeter measures the circulating water flow of the water tank and the measured energy well. The data processor can record temperature and flow data in real time, obtain parameters such as real-time heat release quantity or heat absorption quantity of the energy well through calculation, and automatically push the measurement and calculation results into the memory every 5 min. The continuous heat release quantity or continuous heat absorption quantity of the measured energy well is measured by adjusting the water temperature of the water tank and respectively simulating different working conditions in summer and winter, and a basis is provided for the design of a ground source heat pump air conditioner.

Description

Closed energy well energy measurement appearance
Technical Field
The utility model relates to a clean renewable energy development utilizes the field, concretely relates to closed energy well energy measurement appearance in geothermal energy (shallow geothermal energy) development.
Background
The earth is a hot sphere with an inner core temperature of about 5000 c and 99% of its volume above 1000 c. The heat dissipated from the earth's interior to the atmosphere through the earth's surface is equivalent to the heat generated by burning 1000 billion barrels of oil, which is 3 times the amount of oil produced in 2018. The self-generated heat energy in the earth is separated layer by layer through rock soil, and is reduced to below 25 ℃ at hundreds of meters underground, and the low-temperature heat energy is called geothermal energy (also called shallow geothermal energy). With the maturity of heat pump technology, the low-grade heat energy is used as a cold/heat source of an air conditioning system, is widely applied to refrigeration/heating of buildings and becomes the most effective technical mode for building energy conservation, the energy conservation effect of the ground source heat pump air conditioner is consistently recognized by experts at home and abroad, and compared with the conventional air conditioner, the ground source heat pump air conditioner can save about 50 percent of energy.
The energy well is an underground engineering structure for exploiting geothermal energy, is called an open energy well (also called an underground water heat exchange well) by extracting underground water to exploit geothermal energy, and is called a closed energy well by closed water circulation to exploit geothermal energy, such as a U-shaped tube energy well (also called a buried tube heat exchanger), a sleeve tube energy well (also called a buried tube efficient heat exchanger), a horizontal tube energy well and the like.
The open energy well can calculate the maximum continuous heat absorption capacity and the maximum continuous heat release capacity through a pumping test and measuring the temperature of underground water. A unified testing method for a closed energy well is not available, and the technical specification GB 50366-. How to accurately measure the maximum continuous heat absorption capacity and the maximum continuous heat release capacity of the closed energy source well is a difficult problem which needs to be solved urgently in the design of a ground source heat pump.
SUMMERY OF THE UTILITY MODEL
To the deficiency in the above-mentioned background art, an object of the utility model is to provide a closed energy well energy measurement appearance.
In order to realize the purpose, the following technical scheme is adopted:
a closed energy well energy measuring instrument comprises a water tank, a heat pump unit, a circulating water pump, a temperature sensor, a flow sensor and a data processor;
the heat pump unit is used for heating or reducing the water temperature of the water tank and can automatically control the water temperature to fluctuate within a designed temperature range; the heat pump unit is connected with one side of the water tank through a pipeline, a first circulating water pump is arranged on the pipeline, the water tank is connected with the energy well to be measured through the pipeline, and a second circulating water pump, an outlet water temperature sensor, a return water temperature sensor and a flow sensor are sequentially arranged on the pipeline; the water outlet of the water tank and the heat pump unit are arranged on the same side, and the water inlet of the water tank is arranged on the other side of the heat pump unit; and signals of the water outlet temperature sensor, the water return temperature sensor and the flow sensor are respectively connected to the data processor.
Furthermore, the data processor comprises a control module, a data acquisition module, a data calculation module, a data storage module, a data retrieval module, a data arrangement module and a data output module;
the data acquisition module is used for acquiring circulating water flow (M), water outlet temperature (T1) of the water tank and return water temperature (T2) of the water tank between the water tank and the energy well to be measured in real time;
the data calculation module is used for performing various arithmetic and logic operations according to program instructions and requirements so as to obtain parameter information of real-time heat release or heat absorption of the energy well;
the data storage module is used for automatically pushing the parameter information data obtained by the calculation of the data calculation module into a memory every 5 min;
the data retrieval module is used for retrieving and searching corresponding information according to the requirements of users;
the data arrangement module is used for arranging the parameter information data into an order according to a certain requirement;
and the data output module is used for outputting various corresponding character and number tables generated according to the parameter information data.
Furthermore, the heat pump unit has two functions of cooling and heating, can be an air source heat pump (air/water type), a water source heat pump (water/water type) or a ground source heat pump (water/water type), and can ensure that the water temperature of the water tank is controlled to fluctuate within a designed temperature range.
Furthermore, the outside of the water tank is provided with a heat insulation material, the inside of the water tank is provided with a partition board, the water tank is divided into a left part and a right part, and the lower part of the partition board is provided with a flow guide hole, so that the bottoms of the two parts are communicated.
Compared with the prior art, the utility model discloses beneficial effect embodies:
1. the measurement range is wider, and the heat release quantity and the heat absorption quantity of closed energy wells with various structures can be measured;
2. the measurement result is direct, and the maximum continuous heat release quantity and the maximum continuous heat absorption quantity of the energy well required by design can be directly measured.
3. The continuous heat release quantity or continuous heat absorption quantity of the measured energy well is measured by adjusting the water temperature of the water tank and respectively simulating different working conditions in summer and winter, and a basis is provided for the design of a ground source heat pump air conditioner.
Drawings
Fig. 1 is a schematic view of a top view structure of the energy tester of the present invention;
fig. 2 is a schematic view of the energy tester of the present invention.
Description of the drawings: 1, a water tank; 2, a heat pump unit; 3, circulating a water pump; 4 a temperature sensor; 5 a flow sensor; 6 a data processor; 7, a measured energy well; 8, drilling a well; 3-1, a first circulating water pump; 3-2, a second circulating water pump; 4-1, a water outlet temperature sensor; 4-2 return water temperature sensor.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying examples. It is to be understood that the description of the embodiments herein is for purposes of illustration and explanation only and is not intended to limit the invention.
Connect with the pipeline the utility model discloses a tester and surveyed the energy well. The energy well to be measured is PE32 single U, the hole depth is 100m, and the parameter is input into the data processing system.
Example 1
A closed energy well energy measuring instrument comprises a water tank 1, a heat pump unit 2, a circulating water pump 3, a temperature sensor 4, a flow sensor 5 and a data processor 6;
the heat pump unit 2 is used for heating or reducing the water temperature of the water tank 1 and can automatically control the water temperature to fluctuate within a designed temperature range; the heat pump unit 2 is connected with one side of the water tank 1 through a pipeline, a first circulating water pump 3-1 is arranged on the pipeline, the water tank 1 is connected with a tested energy well 7 through the pipeline, and a second circulating water pump 3-2, an outlet water temperature sensor 4-1, a return water temperature sensor 4-2 and a flow sensor 5 are sequentially arranged on the pipeline; the water outlet of the water tank 1 and the heat pump unit 2 are arranged on the same side, and the water inlet of the water tank 1 is arranged on the other side of the heat pump unit 2; and the signals of the outlet water temperature sensor 4-1, the return water temperature sensor 4-2 and the flow sensor 5 are respectively connected to the data processor 6.
The data processor 6 comprises a control module, a data acquisition module, a data calculation module, a data storage module, a data retrieval module, a data arrangement module and a data output module;
the data acquisition module is used for acquiring circulating water flow (M), water outlet temperature (T1) of the water tank and return water temperature (T2) of the water tank between the water tank 1 and the energy well 7 to be measured in real time;
the data calculation module is used for performing various arithmetic and logic operations according to program instructions and requirements so as to obtain parameter information of real-time heat release or heat absorption of the energy well;
the data storage module is used for automatically pushing the parameter information data obtained by the calculation of the data calculation module into a memory every 5 min;
the data retrieval module is used for retrieving and searching corresponding information according to the requirements of users;
the data arrangement module is used for arranging the parameter information data into an order according to a certain requirement;
and the data output module is used for outputting various corresponding character and number tables generated according to the parameter information data.
Example 2 heat release measurement:
(1) and (3) filling the water tank 1 with water, starting the first circulating pump 3-2, continuously supplementing water until the water level of the water tank 1 is stabilized at a set position, and closing the first circulating pump 3-2.
(2) And starting the heat pump unit 2, and automatically starting the first circulating pump 3-1 and the heat pump unit 2 in a linkage manner. The return water temperature of the heat pump unit is set to Tx, the water temperature in the water tank 1 reaches Tx, the heat pump unit 2 is automatically standby, and the first circulating pump 3-1 is stopped to run subsequently.
(3) And (3) starting the second circulating pump 3-2, reducing the water temperature of the water tank 1, starting the heat pump unit 2 at intervals, and keeping the return water temperature of the water tank at Tx +/-1 ℃.
(4) And starting the data processor, displaying a group of numerical values by the computer every 5min by the data storage module, wherein the numerical values comprise circulating water flow (M) of the water tank 1 and the energy well to be tested 7, water outlet temperature (T1) of the water tank and return water temperature (T2) of the water tank, and calculating inlet and outlet water temperature difference (△ T) of the water tank, return water temperature change rate (△ T) of the water tank and heat release amount of the energy well by the data calculation module.
(5) When Tx is the highest working temperature required by unit design, and the change rate of the return water temperature of the water tank is less than 0.1 ℃/h, the energy well can be considered to reach a thermal equilibrium state, and the heat release amount at the moment is approximately equal to the maximum continuous heat release amount of the tested energy well and is used as a design basis.
Example 3 heat absorption measurement:
(1) and (3) filling the water tank 1 with water, starting the first circulating pump 3-2, continuously supplementing water until the water level of the water tank 1 is stabilized at a set position, and closing the first circulating pump 3-2.
(2) And starting the heat pump unit 2, and automatically starting the first circulating pump 3-1 and the heat pump unit 2 in a linkage manner. And setting the water outlet temperature of the heat pump unit as Td, enabling the water temperature in the water tank 1 to reach Td, enabling the heat pump unit 2 to automatically stand by, and then stopping the operation of the first circulating pump 3-1.
(3) And starting the second circulating pump 3-2, raising the water temperature of the water tank 1, starting the heat pump unit 2 at intervals, and keeping the return water temperature of the water tank at Td +/-1 ℃.
(4) And starting the data processor, displaying a group of numerical values by the computer every 5min by the data storage module, wherein the numerical values comprise circulating water flow (M) of the water tank 1 and the energy well to be tested 7, water outlet temperature (T1) of the water tank and return water temperature (T2) of the water tank, and calculating inlet and outlet water temperature difference (△ T) of the water tank, return water temperature change rate (△ T) of the water tank and heat absorption capacity of the energy well by the data calculation module.
(5) When Td is the minimum working temperature required by unit design and the change rate of the return water temperature of the water tank is less than 0.1 ℃/h, the energy well can be considered to reach a thermal equilibrium state, and the heat absorption capacity at the moment is approximately equal to the maximum continuous heat absorption capacity of the energy well to be measured and is used as a design basis.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the principles of the present invention may be applied to any other embodiment without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims (4)

1. A closed energy well energy measuring instrument is characterized by comprising a water tank (1), a heat pump unit (2), a circulating water pump (3), a temperature sensor (4), a flow sensor (5) and a data processor (6);
the heat pump unit (2) is used for heating or reducing the water temperature of the water tank (1) and can automatically control the water temperature to fluctuate within a designed temperature range; the heat pump unit (2) is connected with one side of the water tank (1) through a pipeline, a first circulating water pump (3-1) is arranged on the pipeline, the water tank (1) is connected with a tested energy well (7) through the pipeline, and a second circulating water pump (3-2), an effluent temperature sensor (4-1), a return water temperature sensor (4-2) and a flow sensor (5) are sequentially arranged on the pipeline; the water outlet of the water tank (1) and the heat pump unit (2) are arranged on the same side, and the water inlet of the water tank (1) is arranged on the other side of the heat pump unit (2); and signals of the water outlet temperature sensor (4-1), the water return temperature sensor (4-2) and the flow sensor (5) are respectively connected to the data processor (6).
2. The closed energy well energy meter of claim 1, wherein: the data processor (6) comprises a control module, a data acquisition module, a data calculation module, a data storage module, a data retrieval module, a data arrangement module and a data output module;
the data acquisition module is used for acquiring circulating water flow (M), water outlet temperature (T1) of the water tank and return water temperature (T2) of the water tank between the water tank (1) and the energy well (7) to be measured in real time;
the data calculation module is used for performing various arithmetic and logic operations according to program instructions and requirements so as to obtain parameter information of real-time heat release or heat absorption of the energy well;
the data storage module is used for automatically pushing the parameter information data obtained by the calculation of the data calculation module into a memory every 5 min;
the data retrieval module is used for retrieving and searching corresponding information according to the requirements of users;
the data arrangement module is used for arranging the parameter information data into an order according to a certain requirement;
and the data output module is used for outputting various corresponding character and number tables generated according to the parameter information data.
3. The closed energy well energy meter of claim 1, wherein: the heat pump unit (2) has two functions of refrigeration and heating, can be an air source heat pump, a water source heat pump or a ground source heat pump, and can ensure that the water temperature of the water tank (1) is controlled to fluctuate within a designed temperature range.
4. The closed energy well energy meter of claim 1, wherein: the water tank (1) is externally provided with a heat insulation material, the inside of the water tank is provided with a partition board, the water tank is divided into a left part and a right part, and the lower part of the partition board is provided with a flow guide hole so that the bottoms of the two parts are communicated.
CN201921655472.5U 2019-09-30 2019-09-30 Closed energy well energy measurement appearance Active CN210690095U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201921655472.5U CN210690095U (en) 2019-09-30 2019-09-30 Closed energy well energy measurement appearance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201921655472.5U CN210690095U (en) 2019-09-30 2019-09-30 Closed energy well energy measurement appearance

Publications (1)

Publication Number Publication Date
CN210690095U true CN210690095U (en) 2020-06-05

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Application Number Title Priority Date Filing Date
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Country Status (1)

Country Link
CN (1) CN210690095U (en)

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