CN101285655A - Novel structure ground burying adverse current heat exchanger - Google Patents

Abstract

The invention discloses a novel-structure ground reverse current heat exchanging device, comprising an upper total leading-out pipe, an upper water collector, a heat exchanging pipe, a lower water collector and a lower total leading-out pipe. The novel-structure ground reverse current heat exchanging device is characterized in that the upper total leading-out pipe is connected with the upper water collector which is connected with the lower end of the heat changing pipe, the lower end of the heat exchanging pipe is connected with the lower water collector which is connected with the lower total leading-out pipe to form a whole heat exchanging device which is buried underground, the upper water collector has a sealed container-shaped structure, the surface is provided with a leading-out connector assembly communicated with an inner cavity, one or a plurality of the connectors in the connector assembly is connected with the upper total leading-out pipe, the remaining connectors are connected with the upper end of the heat exchanging pipe which consists of a group of pipes which have openings at the two ends and big heat transfer coefficient and is anticorrosion, the lower water collector also has a sealed container-shaped structure, the surface is provided with a leading-out connector assembly communicated with an inner cavity, one or a plurality of the connectors in the connector assembly is connected with the lower total leading-out pipe, the remaining connectors are connected with the lower end of the heat exchanging pipe.

Description

Novel structure ground burying adverse current heat exchanger

Technical field

The invention belongs to heat-exchanger rig, a kind of ground burying adverse current heat exchanger of new construction particularly, be applicable to from underground heat removal and go out the occasion and the engineering of heat to subsurface disposal, it is higher to be specially adapted to level of ground water, recharges than the area in hardship from underground heat removal with to the engineering of subsurface disposal heat.

Background technology

For from underground heat removal with to the subsurface disposal heat, in the more rich area of underground water, what most engineerings adopted is at underground one group of water lift well and one group of inverted well made a call to, underground water is as the heat carrier, be circulated between water lift well, heat transmission equipment, the inverted well, finish from underground heat-obtaining or to underground exothermic process.Shortcomings such as this mode exists that to recharge difficulty big, and the potential danger of polluted underground water is arranged, and the immersible pump power consumption is big in the water lift well, and the maintenance workload of pumped well and inverted well is big, and service life is short.

Summary of the invention

The purpose of this invention is to provide a kind of novel structure ground burying adverse current heat exchanger, be applied to the more rich area of underground water, be used to replace traditional, overcome a series of shortcomings that traditional approach exists from underground extraction heat with to the mode of subsurface disposal heat.Have the heat exchange efficiency height, realized and the countercurrent flow of subsurface material that the life-span is long,, heat exchanging fluid few in subterranean well quantity do not mix with underground water, and be simple in structure, small investment, advantage such as operating cost is low.Be applicable in the more rich area of underground water from underground extraction heat with to the occasion of subsurface disposal heat.

The objective of the invention is to be achieved through the following technical solutions, it comprises draws house steward, last water collector, heat-exchanging tube bundle, following water collector, under draw house steward, its principal character is: on draw house steward and link to each other with last water collector, last water collector links to each other with the upper end of heat-exchanging tube bundle, the lower end of heat-exchanging tube bundle links to each other with following water collector, following water collector with under draw house steward and link to each other, form a whole heat-exchanger rig, it is imbedded underground, last water collector is the container-like structure of sealing, its surface have communicate with inner chamber draw the joint group, in this joint group one or several with on draw house steward and link to each other, remaining links to each other with the upper end of heat-exchanging tube bundle, heat-exchanging tube bundle is by both ends open, heat transfer coefficient is bigger, corrosion resistant one group of pipe constitutes, and following water collector also is the container-like structure of sealing, and there is the fairlead joint group that communicates with inner chamber on its surface, in this joint group one or several with under draw house steward and link to each other, remaining links to each other with the lower end of heat exchanger tube.

During use, upper and lower water collector and heat-exchanging tube bundle part is vertically imbedded underground, the upper and lower house steward of drawing causes ground, if need from underground extraction heat, then should the import of house steward as cryogen will be descended to draw, cryogen under draw house steward and flow to into following water collector, from water collector is upwards by heat-exchanging tube bundle down, the water of being restrained outer surface heats again, after temperature raises, enter water collector, flow into from last water collector again and draw house steward, and flow out from drawing house steward.Continuously underground heat is proposed, because heat-exchanging tube bundle outer surface water is cooled, cause variable density, form the convective motion of water, strengthened heat transfer, and formed the low temperature field of last relative superiority or inferiority and distributed, realized the effect of countercurrent flow, again because phreatic travel motion, make the water that is cooled, move constantly downwards to a distant place, the result has reached the continuous purpose from underground extraction heat, the heat that the acquisition of selecting the surface area of the temperature of suitable cryogen and suitable heat-exchanging tube bundle just can hang down input needs from underground extraction.If need to the underground heat of emitting, then should with on draw the import of house steward as high temperature fluid, high temperature fluid enters water collector from drawing house steward, flows into heat-exchanging tube bundle downwards from last water collector, is restrained the underground water cooling in the outside, after emitting heat, temperature descends, and flow into down water collector, by drawing house steward under the water collector inflow down, from under draw house steward and flow out, endlessly heat is disposed to underground.Because the underground water in the tube bank outside is heated, density reduces, and water will move upward, and to distant place motion, and the result has reached continuously the purpose to the subsurface disposal heat.

The convection current that the present invention utilizes underground water to be heated and variable density forms when lowering the temperature, strengthened heat-transfer effect, utilize the travel motion of water to take away heat and the cold of passing to water, make the heat transfer efficiency height of contrive equipment, heat transfer property is reliable and stable, because restraining the motion of inboard water, the present invention can be closed cycle again, therefore the lift of the water pump of the Fluid Motion Driven By Moving on-way resistance that only need overcome system pipeline gets final product, reduced the energy consumption of water pump, be applicable to that generally all kinds of need are to the subsurface disposal heat with from the engineering and the occasion of underground extraction heat.

Description of drawings

Fig. 1 is the schematic diagram of embodiments of the invention

Fig. 2 is the generalized section that goes up water collector 2 structures

The specific embodiment

Among Fig. 1, Fig. 2, on draw house steward 1 the lower end link to each other with last water collector 2, water collector 2 links to each other with the upper end of heat-exchanging tube bundle 3 again, the lower end of heat-exchanging tube bundle 3 links to each other with following water collector 4, following water collector 4 with under draw house steward 5 and link to each other, for being easy to the air in the discharge system, last water collector also links to each other with a blast pipe 6 that causes ground.Heat-exchanger rig is if need from underground heat removal, then cryogen enter into certain flow under the driving of water pump device on draw house steward 5, and gathering until being full of in the water collector 4 down, air in the system is discharged by the blast pipe 6 on last water collector 2 tops, under pressure, cryogen in the following water collector 4 begins slowly to rise along heat-exchanging tube bundle 3, there is the temperature difference between cryogen and the underground water, by heat-exchanging tube bundle generation heat exchange, the temperature of cryogen raises gradually, arrive through heat-exchanging tube bundle 3 and to go up water collector 2, finished the heat transfer process that heat absorption heats up, the cryogen after heat absorption heats up by on draw house steward 1 and get back to system.So repeatedly, finish from the process of underground extraction heat.If need when the subsurface disposal heat, high temperature fluid by on draw house steward 1 and enter into water collector 2.A flow-guiding cloth hydrophone 7 is equipped with at every pipe top at the heat-exchanging tube bundle 3 of last water collector 2 inside, water-locator 7 is a hollow, there is a skewed slot outer, during work, water tangentially enters every pipe of tube bank 3 from skewed slot, the air of bottom is flowed upward in the water collector 2 by the inner chamber of every pipe, and from blast pipe 6 discharge water systems, enter the high temperature fluid of tube bank in 3 and restrained the underground water cooling in 3 outsides, heat is disposed to underground, the cooling back flows into water collector 4 down, again from drawing house steward 5 under water collector 4 inflows down, from under draw house steward 5 and flow out, so move in circles, realized purpose to the underground water discharges heat.

The advantage of apparatus of the present invention is: can adopt the closed cycle structure, avoid groundwater abstraction and well water to return Fill with a series of technical problems that are difficult to solve that face, the drilling hole number ratio is arranged traditionally pipe laying scheme simultaneously Greatly reduce, reduced the cost of well-digging, the power consumption of pump also significantly reduces, and has reduced operating cost, and is real Showed the countercurrent flow process, heat exchange efficiency improves greatly. Be applicable to the heat-obtaining in the high area of all kinds of levels of ground water With the heat extraction engineering.

Claims (3)

1. the ground burying adverse current heat exchanger of a new construction, it comprises draws house steward, last water collector, heat-exchanging tube bundle, following water collector, under draw house steward, its principal character is: on draw house steward and link to each other with last water collector, last water collector links to each other with the upper end of heat-exchanging tube bundle, the lower end of heat-exchanging tube bundle links to each other with following water collector, following water collector with under draw house steward and link to each other, form a whole heat-exchanger rig, it is imbedded underground, last water collector is the container-like structure of sealing, its surface have communicate with inner chamber draw the joint group, in this joint group one or several with on draw house steward and link to each other, remaining links to each other with the upper end of heat-exchanging tube bundle, heat-exchanging tube bundle is by both ends open, heat transfer coefficient is bigger, corrosion resistant one group of pipe constitutes, and following water collector also is the container-like structure of sealing, and there is the fairlead joint group that communicates with inner chamber on its surface, in this joint group one or several with under draw house steward and link to each other, remaining links to each other with the lower end of heat exchanger tube.

2. novel structure ground burying adverse current heat exchanger according to claim 1 is characterized in that: a pipe that leads to ground links to each other with last water collector inner chamber, is used to discharge the air in the water collector.

3. novel structure ground burying adverse current heat exchanger according to claim 1 is characterized in that: the flow-guiding cloth hydrophone of a band skewed slot is housed at every pipe top of last water collector internal heat exchange tubes bundle, and the flow-guiding cloth hydrophone is a hollow, and there is the part of a skewed slot outer.

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