CN103743166A - Pressure controlling device for ground source heat pump system - Google Patents
Pressure controlling device for ground source heat pump system Download PDFInfo
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- CN103743166A CN103743166A CN201310731166.6A CN201310731166A CN103743166A CN 103743166 A CN103743166 A CN 103743166A CN 201310731166 A CN201310731166 A CN 201310731166A CN 103743166 A CN103743166 A CN 103743166A
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Abstract
Disclosed is a pressure controlling device for a ground source heat pump system. The pressure controlling device for the ground source heat pump system comprises a machine room water supply tank, a buried make-up pump, an electric sluice valve and a system pressure controller. The machine room water supply tank is arranged on the ground of a heat pump machine room, one side of the bottom of the machine room water supply tank is provided with a water outlet, and the upper end of the machine room water supply tank is provided with a water inlet, and the inside of the machine room water supply tank contains system make-up water; the buried make-up pump is mounted on a pipe connected between a water collecting pipe and the water inlet at the upper end of the machine room water supply room; the system pressure controller is mounted in a position inside the heat pump machine room and higher than the highest machine room pipe, and the lower end of the system pressure controller is connected with the water collecting pipe through a pipe. Compared with a high level cistern, the pressure controlling device for the ground source heat pump system has the advantages of small floor occupation and flexible and reliable operation and meanwhile is simple in structure, low in cost and construction cost and accordingly applicable to any ground source heat pump system.
Description
Technical field
The invention belongs to ground source heat pump project technical field, particularly relate to a kind of earth-source hot-pump system constant pressure arrangement.
Background technology
Ground source heat pump project is exactly first in the earth soil, to hole, then the prefabricated U-shaped pipe that is referred to as ground heat exchanger is imbedded in hole, and with connecting line, U-shaped pipe is connected with source pump, and on the connecting line between U-shaped pipe and source pump, be connected a tableland and bury systemic circulation water pump, simultaneously on the connecting line between source pump and indoor air-conditioning system, be connected an Air Conditioning Cycle water pump, form thus earth-source hot-pump system.Wherein source pump consists of compressor, condenser, expansion valve and evaporimeter, is conventionally arranged in heat pump machine room.Source pump, ground heat exchanger and connecting line are referred to as embedding system.During operation, utilize embedding system water circulating pump using as heat transferring medium and and the earth between carried out heat exchange and by the connecting line between U-shaped pipe and source pump, offered source pump from the water that the earth absorbs heat or cold, and in the mode of heat exchange, this heat or cold are offered to refrigerant, Air Conditioning Cycle water pump offers each indoor heat exchanger in air-conditioning system by the above-mentioned refrigerant that heats up after heat exchange or lower the temperature by connecting line more afterwards, in indoor heat exchanger, this refrigerant carries out heat exchange by the air with the interior space, thereby the interior space is remained at suitable temperature.
Fig. 1 is a kind of embedding system structural representation of prior art.As shown in Figure 1, described embedding system comprises source pump 1, embedding system water circulating pump 2, buried water knockout drum 3, buried water collector 4 and a plurality of ground heat exchanger 5; Wherein the top of buried water knockout drum 3 is provided with a water inlet 8, and bottom is provided with a plurality of delivery ports 9; The top of buried water collector 4 is provided with a delivery port 10, and bottom is provided with a plurality of water inlets 11; A plurality of ground heat exchangers 5 are divided into some groups, and every group is connected with each ground heat exchanger 5 water inlet ends by same Cheng Fangfa by a level header 12, and collector 13 is connected with a water inlet 11 on buried water collector 4; Source pump 1 by supply channel 6 and catchment pipeline 7 respectively with buried water knockout drum 3 on water inlet 8 and the delivery port 10 on buried water collector 4 join; Embedding system water circulating pump 2 is arranged on the pipeline between source pump 1 and buried water collector 4.
In addition, embedding system is identical with air-conditioning system, is all in water-filled situation, to utilize water pump that water is circulated in system in system.In addition, in earth-source hot-pump system, level pressure equipment must be set, utilize it to intrasystem pressure, to control, object has following 2 points:
1, in system, the pressure of each point is all higher than atmospheric pressure, and air can not automatic log-on, and the air existing in simultaneity factor can enter atmosphere under pressure.
2, in system, the pressure of each point can not be too high, assurance system in all devices and pipeline be no more than working pressure, make system safety operation.
Conventional level pressure method has following several at present:
1, elevated tank level pressure.
2, Constant pressure tank level pressure.
3, distance-transmission pressure gauge pump variable frequency level pressure.
" Constant pressure tank level pressure " and " distance-transmission pressure gauge pump variable frequency level pressure " these two kinds of methods of employing are because of reasons such as pressure sensor insufficient sensitivity height, often be only applicable to middle high-pressure steady of system press, not too applicable to earth-source hot-pump system, there is the danger of superpressure, remove not recommendation of last resort.Although adopt " elevated tank " the safest to this method of steady of system press, but elevated tank must be located at the highest point of heat pump machine room, water tank bottom surface must be higher than all embedding system pipelines in heat pump machine room, because arranging elevated tank, a lot of heat pump machine rooms have any problem, physical features fails to lay down, thereby causes construction costs higher.
Summary of the invention
In order to address the above problem, the object of the present invention is to provide the little and reliable earth-source hot-pump system constant pressure arrangement of flexible operation of a kind of occupation of land.
In order to achieve the above object, earth-source hot-pump system provided by the invention comprises machine room feed-tank, buried small pump, electronic drain valve and system pressure controller with constant pressure arrangement; Wherein machine room feed-tank is arranged on the ground of heat pump machine room, and bottom one side is provided with delivery port, and upper end is provided with water inlet, and inside is contained with system and supplements water; Buried small pump is arranged on and is connected on the pipeline catchmenting between pipeline and machine room feed-tank upper water-out mouth in embedding system; Electronic drain valve is arranged on and is connected on the pipeline catchmenting between pipeline and machine room feed-tank upper end water inlet; System pressure controller is arranged on the interior position higher than the highest machine room pipeline of heat pump machine room, and its lower end is connected with the pipeline that catchments by pipeline.
Described system pressure controller comprises tank body and floating-ball level switch; Wherein the lower end of tank body is formed with water inlet, and water inlet is connected with the pipeline that catchments by pipeline, and inside is contained with heat transferring medium; Floating-ball level switch is comprised of fixed leg, bottom magnetic ball float, upper magnetic ball float and first to fourth electromagnetism point, and wherein fixed leg is vertically mounted on place, tank interior axle center; First to fourth electromagnetism is put standoff distance from bottom to up and is arranged on fixed leg, wherein the 3rd, the 4th electromagnetism point is electrically connected to electronic drain valve by electronic drain valve control circuit, and first, second electromagnetism point is electrically connected to buried small pump by water pump control circuit; Bottom magnetic ball float and upper magnetic ball float are set on the fixed leg between first, second electromagnetism point and the 3rd, the 4th electromagnetism point in the mode that can move up and down.
The top of described tank body is also formed with overfall, and overfall is connected with machine room feed-tank by overflow pipe, and upper end is formed with exhaust outlet simultaneously.
Earth-source hot-pump system provided by the invention is compared with elevated tank with constant pressure arrangement, have and take up an area little, the reliable advantage of flexible operation, and simple in structure, cost is low, construction costs is low, therefore applicable to any earth-source hot-pump system.In addition, as long as system pressure controller is higher than machine room pipeline, so level pressure pressure only has several meter water columns, so security is good.
Accompanying drawing explanation
Fig. 1 is a kind of embedding system structural representation of prior art.
Fig. 2 is earth-source hot-pump system provided by the invention constant pressure arrangement structural representation.
Fig. 3 is system pressure controller vertical structure cutaway view in the constant pressure arrangement shown in Fig. 2.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, earth-source hot-pump system provided by the invention is elaborated with constant pressure arrangement.The parts identical with prior art adopt identical drawing reference numeral, and omit the explanation that it is carried out.
As shown in Figure 2, earth-source hot-pump system provided by the invention comprises machine room feed-tank 14, buried small pump 15, electronic drain valve 16 and system pressure controller 17 with constant pressure arrangement; Wherein machine room feed-tank 14 is arranged on the ground of heat pump machine room, and bottom one side is provided with delivery port, and upper end is provided with water inlet, and inside is contained with system and supplements water; Buried small pump 15 is arranged on and is connected on the pipeline catchmenting between pipeline 7 and machine room feed-tank 14 upper water-out mouths in embedding system; Electronic drain valve 16 is arranged on and is connected on the pipeline catchmenting between pipeline 7 and machine room feed-tank 14 upper end water inlets; System pressure controller 17 is arranged on the interior position higher than the highest machine room pipeline of heat pump machine room, and its lower end is connected with the pipeline 7 that catchments by pipeline.
As shown in Figure 3, described system pressure controller 17 comprises tank body 18 and floating-ball level switch 19; Wherein the lower end of tank body 18 is formed with water inlet 20, and water inlet 20 is connected with the pipeline 7 that catchments by pipeline, and inside is contained with heat transferring medium; Floating-ball level switch 19 is comprised of fixed leg 21, bottom magnetic ball float 22, upper magnetic ball float 23 and first to fourth electromagnetism point 24-27, and wherein fixed leg 21 is vertically mounted on tank body 18 internal axis places; First to fourth electromagnetism point 24-27 from bottom to up standoff distance is arranged on fixed leg 21, the the 3rd, the 4th electromagnetism point 26 wherein, 27 are electrically connected to electronic drain valve 16 by electronic drain valve control circuit, first, second electromagnetism point 24,25 is electrically connected to buried small pump 15 by water pump control circuit; Bottom magnetic ball float 22 and upper magnetic ball float 23 are set on the fixed leg 21 being positioned between first, second electromagnetism point 24,25 and the 3rd, the 4th electromagnetism point 26,27 in the mode that can move up and down.
The top of described tank body 18 is also formed with overfall 28, and overfall 28 is connected with machine room feed-tank 14 by overflow pipe 30, and upper end is formed with exhaust outlet 29 simultaneously.
Now earth-source hot-pump system provided by the invention is described below by constant pressure arrangement operation principle: it is A point that the heat transferring medium liquid level in system pressure controller 17 upper tank bodies 18 is down to the first electromagnetism point 24() position time, bottom magnetic ball float 22 will contact on the first electromagnetism point 24, thereby this electromagnetism point is connected, by water pump control circuit, open buried small pump 15 thus, thereby the water extraction supply in machine room feed-tank 14 is catchmented to pipeline 7 and embedding system is carried out to moisturizing; Along with the interior heat transferring medium liquid level of tank body 18 rises, the position of bottom magnetic ball float 22 also will increase, it is B point that thermal medium liquid level to be changed rises to the second electromagnetism point 25() position time, bottom magnetic ball float 22 will contact on the second electromagnetism point 25, thereby this electromagnetism point is disconnected, and at this moment under the control of water pump control circuit, buried small pump 15 stops moisturizing.Because the heat transferring medium in embedding system may produce because being heated expansion, when heat transferring medium liquid level reaches the 4th electromagnetism point 27(, be D point) position time, upper magnetic ball float 23 will contact on the 4th electromagnetism point 27, thereby electromagnetism point is connected, by electronic drain valve control circuit, open electronic drain valve 16 thus, at this moment the heat transferring medium in embedding system will leak in machine room feed-tank 14 by being connected in the pipeline catchmenting between pipeline 7 and machine room feed-tank 14 upper end water inlets; When heat transferring medium liquid level, being down to the 3rd electromagnetism point 26(is C point) position time, upper magnetic ball float 23 will contact on the 3rd electromagnetism point 26, thereby this electromagnetism point is disconnected, and at this moment under the control of electronic drain valve control circuit, electronic drain valve 16 will cut out, result stops sluicing.
Claims (3)
1. an earth-source hot-pump system constant pressure arrangement, is characterized in that: it comprises machine room feed-tank (14), buried small pump (15), electronic drain valve (16) and system pressure controller (17); Wherein machine room feed-tank (14) is arranged on the ground of heat pump machine room, and bottom one side is provided with delivery port, and upper end is provided with water inlet, and inside is contained with system and supplements water; Buried small pump (15) is arranged on and is connected on the pipeline catchmenting between pipeline (7) and machine room feed-tank (14) upper water-out mouth in embedding system; Electronic drain valve (16) is arranged on the pipeline being connected between the pipeline that catchments (7) and machine room feed-tank (14) upper end water inlet; System pressure controller (17) is arranged on the interior position higher than the highest machine room pipeline of heat pump machine room, and its lower end is connected with the pipeline that catchments (7) by pipeline.
2. earth-source hot-pump system constant pressure arrangement according to claim 1, is characterized in that: described system pressure controller (17) comprises tank body (18) and floating-ball level switch (19); Wherein the lower end of tank body (18) is formed with water inlet (20), and water inlet (20) is connected with the pipeline that catchments (7) by pipeline, and inside is contained with heat transferring medium; Floating-ball level switch (19) is comprised of fixed leg (21), bottom magnetic ball float (22), upper magnetic ball float (23) and first to fourth electromagnetism point (24-27), and wherein fixed leg (21) is vertically mounted on tank body (18) internal axis place; First to fourth electromagnetism point (24-27) from bottom to up standoff distance is arranged on fixed leg (21), the the 3rd, the 4th electromagnetism point (26 wherein, 27) by electronic drain valve control circuit, be electrically connected to electronic drain valve (16), first, second electromagnetism point (24,25) is electrically connected to buried small pump (15) by water pump control circuit; Bottom magnetic ball float (22) and upper magnetic ball float (23) are set on the fixed leg (21) being positioned between first, second electromagnetism point (24,25) and the 3rd, the 4th electromagnetism point (26,27) in the mode that can move up and down.
3. earth-source hot-pump system constant pressure arrangement according to claim 2, it is characterized in that: the top of described tank body (18) is also formed with overfall (28), overfall (28) is connected with machine room feed-tank (14) by overflow pipe (30), and upper end is formed with exhaust outlet (29) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731166.6A CN103743166A (en) | 2013-12-26 | 2013-12-26 | Pressure controlling device for ground source heat pump system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310731166.6A CN103743166A (en) | 2013-12-26 | 2013-12-26 | Pressure controlling device for ground source heat pump system |
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| CN103743166A true CN103743166A (en) | 2014-04-23 |
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| CN201310731166.6A Pending CN103743166A (en) | 2013-12-26 | 2013-12-26 | Pressure controlling device for ground source heat pump system |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0502609A1 (en) * | 1991-03-05 | 1992-09-09 | Ontario Hydro | Heat pump |
| CN202274637U (en) * | 2011-10-24 | 2012-06-13 | 河北省电力勘测设计研究院 | Automatic water replenishing device of ground source heat pump |
| CN202501601U (en) * | 2012-03-02 | 2012-10-24 | 山东宏力空调设备有限公司 | Water system module of integral ground-source heat pump energy distribution device |
| CN202853199U (en) * | 2012-09-26 | 2013-04-03 | 天津好为节能环保科技发展有限公司 | Vertical buried pipe type ground source heat pump hot water and air-conditioning system |
| CN203240687U (en) * | 2013-03-21 | 2013-10-16 | 浙江陆特能源科技有限公司 | Integrated airtight constant-pressure expansion device used for mid-rise building and low-rise building ground-source heat pump system |
| CN203672000U (en) * | 2013-12-26 | 2014-06-25 | 天津美意机电设备工程有限公司 | Constant pressure device for ground source heat pump system |
-
2013
- 2013-12-26 CN CN201310731166.6A patent/CN103743166A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0502609A1 (en) * | 1991-03-05 | 1992-09-09 | Ontario Hydro | Heat pump |
| CN202274637U (en) * | 2011-10-24 | 2012-06-13 | 河北省电力勘测设计研究院 | Automatic water replenishing device of ground source heat pump |
| CN202501601U (en) * | 2012-03-02 | 2012-10-24 | 山东宏力空调设备有限公司 | Water system module of integral ground-source heat pump energy distribution device |
| CN202853199U (en) * | 2012-09-26 | 2013-04-03 | 天津好为节能环保科技发展有限公司 | Vertical buried pipe type ground source heat pump hot water and air-conditioning system |
| CN203240687U (en) * | 2013-03-21 | 2013-10-16 | 浙江陆特能源科技有限公司 | Integrated airtight constant-pressure expansion device used for mid-rise building and low-rise building ground-source heat pump system |
| CN203672000U (en) * | 2013-12-26 | 2014-06-25 | 天津美意机电设备工程有限公司 | Constant pressure device for ground source heat pump system |
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Application publication date: 20140423 |