CN202547190U

CN202547190U - Buried pipe system of ground source heat pump

Info

Publication number: CN202547190U
Application number: CN2012201340276U
Authority: CN
Inventors: 谢德然; 夏栋良; 杜华良
Original assignee: SUZHOU GREEN BUILDING TECHNOLOGY RESEARCH CENTER Co Ltd
Current assignee: Jiangsu Xincheng New Energy Co., Ltd.
Priority date: 2012-04-01
Filing date: 2012-04-01
Publication date: 2012-11-21
Anticipated expiration: 2022-04-01

Abstract

The utility model discloses a buried pipe system of a ground source heat pump. The buried pipe system comprises a plurality of buried pipes distributed below the ground, wherein each two or four buried pipes are arranged in a tube well; the buried pipes in each tube well are connected with a cold/heat source machine room through pipelines so as to form a buried pipe loop; a sub-area loop is composed of the buried pipes in at least two tube wells; the water inlet pipes and the water outlet pipes of each sub-area loop are connected with the water outlet/inlet pipelines of the cold/heat source machine room in parallel; the water outlet pipes of each sub-area loop is provided with a valve and a temperature probe; and the control end of each valve and the signal sending end of the temperature probe are connected with a master controller. According to the utility model, the buried pipes are divided into areas; the water outlet pipes are provided with valves and temperature probes; the buried pipe loop is used by sub-areas; thus, heat balance of soil is ensured while realizing energy saving operation of a whole system.

Description

The buried guard system of earth source heat pump

Technical field

The utility model relates to a kind of earth-source hot-pump system, is specifically related to a kind of buried guard system of earth source heat pump.

Background technology

Raising along with social development and people's living standard; People also constantly increase for demands for energy; And the excessive exploitation of non-renewable energy resources has brought serious harm for climatic environment, descendants's survival and development, and therefore developing regenerative resource becomes the Critical policies that addresses this problem.Earth source heat pump is as a kind of novel, cleaning, environmental protection, energy technology more and more receives people's attention efficiently.It is to utilize underground metastable soil, underground water temperature, obtains the new device of soil, underground internal water cooling (heat) energy through medium, and earth source heat pump realizes that through input a spot of high-grade energy (like electric energy) low-temperature heat energy is to the high temperature bit transition.Ground can be distinguished in the winter time as the thermal source of heat pump heating and the low-temperature receiver of summer air-conditioning, promptly in the winter time, " gets the heat in the ground ability " to come out, and after the raising temperature, the supply indoor heating; Summer, take out indoor heat, go down, so earth source heat pump is usually used in building heating and refrigeration with being discharged into.

Earth source heat pump generally all is to adopt buried form of tubes, because end temperature long-term constant temperature in ground about 18 degree, can be that air-conditioner host provides a condensation preferably and evaporating temperature in summer and winter so just generally, effectively improves Energy Efficiency Ratio, and it is energy-conservation to be beneficial to unit.Buried guard system is a closed system; Flow in the underground buried tube of sealing through circulation fluid (water or be the anti-icing fluid of main component with water); Heat transfer exchange between realization system and the earth; Be a ground pipe laying heat exchange interchanger of being made up of underground buried tube on the structure, the form that is provided with of ground pipe laying heat exchange interchanger mainly contains level and vertical two kinds.Wherein, vertically the form of pipe laying is that drill diameter is the boring (pipe well) 8 of 0.1m～0.15m in the stratum, in boring 8,1 group (2) is set or 2 groups of (4) U-shaped Guan Bingyong grouting materials tamp.Ground pipe laying in the adjacent boring 8 generally adopts parallel way; Because series connection be equivalent to increase water flow velocity, just increased convection transfer rate, be to increase some heat exchange effects; But pump energy consumption has just got on; Tubing pressure also possibly exceed standard, thus adopt parallel connection usually, as shown in Figure 1.

Yet, the connected mode of parallel connection, unified and open and unified the closing of all buried wells, the problem that directly causes is that to draw, to release energy is unbalanced.When the heat that discharges to underground accumulative total during greater than the heat that takes out from underground accumulative total, form hot stack, the soil moisture will rise year by year, refrigerating efficiency worsens year by year, when heat build-up to a certain degree the time, earth-source hot-pump system just can't normally freeze; Equally, when to the heat of soil accumulative total discharging during less than the heat that takes out from soil accumulative total, it is long-pending to form cold dome, and the soil moisture can descend year by year, and heating efficiency reduces year by year, and when cold was stacked into to a certain degree, earth-source hot-pump system just can't normally heat.Therefore, need improve, to improve the ground source heat pump performance to existing ground pipe laying connected mode and control mode.

Summary of the invention

The utility model purpose provides a kind of buried guard system of earth source heat pump, and through the improvement of pipe laying connected mode and control mode over the ground, balance soil thermal energy promotes the ground source heat pump performance.

For achieving the above object; The technical scheme that the utility model adopts is: a kind of buried guard system of earth source heat pump; Comprise and be distributed in underground complex root ground pipe laying; Per two or four said ground pipe layings are arranged in the pipe well, and the ground pipe laying is connected with the Cooling and Heat Source machine room by the road in each pipe well, constitutes buried pipe ring road; The ground pipe laying constitutes a subregion loop at least 2 said pipe wells; The oral siphon of each said subregion loop and outlet pipe are parallel to respectively on the going out of said Cooling and Heat Source machine room, the entry pipeline, and the outlet pipe of each said subregion loop is provided with a valve and a temp probe, and the control end of each said valve is connected with master controller respectively with the signal sending end of temp probe.

In the technique scheme, said master controller can be used intrasystem master controller, and the ground pipe laying is divided into a plurality of subregion loops; Each subregion loop is connected in parallel to that the Cooling and Heat Source machine room goes out, on the oral siphon, this Cooling and Heat Source machine room can adopt existing buried source pump, and a valve and a temp probe are set on the outlet pipe of each subregion; The temperature information of gathering is sent in the master controller, when the summer heat extraction, under the situation that total leaving water temperature meets the demands; Master controller cuts out the sectional valve that temperature is the highest in the subregion loop, and further judges time high temperature loop, if still can satisfy; Then close this loop valve again; In the time can not satisfying, open the subregion loop valve of closing the earliest, so cycle criterion control; During heat-obtaining, then judge the subregion loop that temperature is minimum in the winter time, close this subregion loop valve, control mode and heat extraction in summer are similar.So control just can be the time that soil provides rest and reorganization, and the work pattern of clearance-type avoids heat to gather in a large number for a long time, ensures the thermal balance of soil, realizes the energy-saving run of whole system.

In the technique scheme, be in series or in parallel to form between the ground pipe laying in each pipe well in the said subregion loop.

In the technique scheme, said valve is magnetic valve or motor-driven valve.

Because the technique scheme utilization, the advantage that the utility model compared with prior art has is:

1, the utility model is divided into a plurality of subregion loops with a plurality of ground pipe laying, and each subregion loop is connected on the going out of Cooling and Heat Source machine room, the entry pipeline, and valve and temp probe are set on the outlet pipe of each subregion loop simultaneously; Master controller is according to the temperature data of gathering, under the situation that total leaving water temperature meets the demands, and the subregion loop valve that closing temperature is high or minimum; If still can satisfy, then close the subregion loop valve of time temperature value again, and after not reaching requirement; Open the valve of closing the earliest, thereby realize clearance-type operation, avoid heat to gather in a large number for a long time soil; Ensure the thermal balance of soil, realize the energy-saving run of whole system;

2, the valve on each subregion loop is by the main controller controls switch; Real temperature when gathering by temp probe; Master controller is according to the operation situation of each subregion loop of temperature judgement of gathering, and The whole control is accomplished by master controller automatically, need not manual intervention; Control conveniently the security that has improved buried guard system simultaneously.

Description of drawings

Fig. 1 is that pipeline of the prior art connects sketch map;

Fig. 2 is that the pipeline of the utility model embodiment one connects sketch map.

Wherein: pipe laying 1; 2, pipe well; 3, Cooling and Heat Source machine room; 4, subregion loop; 5, outlet pipe; 6, electrically operated valve; 7, temp probe; 8, boring.

The specific embodiment

Below in conjunction with accompanying drawing and embodiment the utility model is further described:

Embodiment one: shown in accompanying drawing 2; A kind of buried guard system of earth source heat pump comprises being distributed in underground complex root ground pipe laying 1 that per two said ground pipe layings 1 are arranged in the pipe well 2; Ground pipe laying 1 is connected with Cooling and Heat Source machine room 3 by the road in each pipe well 2, constitutes buried pipe ring road.

As shown in Figure 2; Ground pipe laying 1 constitutes a subregion loop 4 in 4 said pipe wells 2; The oral siphon of each said subregion loop 4 and outlet pipe 5 are parallel to respectively on the going out of said Cooling and Heat Source machine room, the entry pipeline; The outlet pipe 5 of each said subregion loop is provided with an electrically operated valve 6 and a temp probe 7, and the control end of each said electrically operated valve 6 is connected with master controller respectively with the signal sending end of temp probe 7.Parallel connection formation between each pipe well 2 interior ground pipe laying 1 in the said subregion loop 4.

Its control mode is:

Heat extraction in summer operating mode: through trial run, detect the highest subregion loop 4 of leaving water temperature, master controller judges if cut out this loop; Whether total leaving water temperature can meet the demands, and is then to close this loop electrically operated valve 6 automatically, and further judges time high temperature loop; If still can satisfy, then close in the lump, can not meet the demands until total leaving water temperature; Open the electrically operated valve 6 on the subregion loop 4 of closing the earliest this moment; Up to meeting the demands, be back to the operation of the subregion loop 4 of aforementioned detection maximum water temperature then, so circulation;

Winter and hot water heat-obtaining operating mode: through trial run, detect the minimum subregion loop 4 of leaving water temperature, judge if close this loop; Whether total leaving water temperature can meet the demands; Be then to close this loop motor-driven valve 6 automatically, and the electrically operated valve 6 on the subregion loop 4 of further judgement time low-temperature loop, up to meeting the demands; Be back to the operation of the subregion loop 4 of the minimum leaving water temperature of aforementioned detection then, so circulation.

Claims

1. the buried guard system of an earth source heat pump; Comprise and be distributed in underground complex root ground pipe laying; Per two or four said ground pipe layings are arranged in the pipe well, and the ground pipe laying is connected with the Cooling and Heat Source machine room by the road in each pipe well, constitutes buried pipe ring road; It is characterized in that: the ground pipe laying constitutes a subregion loop at least 2 said pipe wells; The oral siphon of each said subregion loop and outlet pipe are parallel to respectively on the going out of said Cooling and Heat Source machine room, the entry pipeline, and the outlet pipe of each said subregion loop is provided with a valve and a temp probe, and the control end of each said valve is connected with master controller respectively with the signal sending end of temp probe.

2. the buried guard system of earth source heat pump according to claim 1 is characterized in that: be in series or in parallel to form between the ground pipe laying in each pipe well in the said subregion loop.

3. the buried guard system of earth source heat pump according to claim 1, it is characterized in that: said valve is magnetic valve or motor-driven valve.