Cold accumulation device

FIELD: improving or preserving soil or rock by thermal, electrical or electro-chemical means, particularly by freezing.

SUBSTANCE: cold accumulation device comprises casing pipe filled with coolant. The casing pipe includes evaporator submersed in ground and condenser comprising condensing zones A and B. Compression-and-condensing unit is arranged over condenser and connected with pipeline through pressure and discharge lines. The pipeline is made as tube of elliptic cross-section wound on tube having D1 diameter. Casing pipe has variable cross-section so that lower evaporator part L having diameter D is located in down casing pipe part and is brought in direct contact with ground. Remainder evaporator part L1 has diameter D1, wherein D>D1. Space defined by D-D1 difference is filled with air.

EFFECT: improved economical efficiency and performance, increased manufacturability and extended functional capabilities.

1 dwg

 

The invention relates to the field of refrigeration technology and relates to the freezing of the soil used to create Leopardi fences.

A device for the cold accumulation, consisting of evaporator submerged in the ground, and a condenser located above the ground surface. Around the evaporator and part of the capacitor mounted on the shell with a gap, which is filled with coolant. Shell mounted around the condenser is thermally insulated. Shell announced the pressure and the outlet pipe and the discharge pipe is located inside the shell and connected to the manifold Device for the cold accumulation. Patent No. 2168584, E 02 D 3/115 from 10.06.2001 year ).

The disadvantages of this device is that in the winter in Sunny weather, the surface temperature of the condenser part of the heat pipe is increased, resulting in reduced device performance. In addition, when the supply of the coolant cooling device centralized, resulting in increased energy costs and worsens the manufacturability of the device.

Closest to the claimed invention is a device for the cold accumulation, including the casing, consisting of an evaporator, submerged in the ground, and a capacitor comprising the capacitor area and, around the part of the capacitor in the capacitor area And mounted on the shell with a gap, which is a pipeline that performs the role of the evaporator and is made in the form of a tube ellipse section, tightly wound on the casing, the gap in the capacitor area And between the tubing and casing is filled with insulation. The device also includes condensing unit, connected to the injection and discharge piping using a thermostatic expansion valve with hermouth with the pipeline located in the condensing zone And [the Patent for useful model №42546 from 10.12.2004 "Device for the cold accumulation", authors: Malyshev F.A., Maksimenko V.A., Yakushenko A.P., Nitsevych O.A.].

The disadvantages of this device is the difficulty in manufacturing, greater complexity and cost, small functionality.

The objective of the invention is increased efficiency and productivity, improved technology and increased functionality of the device.

This technical result is achieved in that in a device for the cold accumulation containing the casing, filled with a refrigerant consisting of evaporator submerged in the ground, and a condenser, condensing unit, located above the capacitor and coupled discharge and otodama the pipeline with the pipeline in the form of a tube ellipse section, tightly wound on the pipe, casing pipe made rolling diameter so that the lower part of the evaporator L is made with a diameter D and is located at the bottom of the casing and is directly in contact with the ground, and the remaining part of the evaporator L1made with a diameter of D1and D>D1a resulting difference of diameters (D-D1) cavity filled with air, forming an air layer.

The drawing shows a General view of the device.

The device includes a casing pipe, consisting of the evaporator 1, is immersed in the ground, and the capacitor 2, which consists of condensing zones a and B. To ensure freezing of the soil at a certain depth (in length) casing pipe, casing pipe made rolling diameter so that the lower part of the evaporator L is made with a diameter D and is located at the bottom of the casing and is directly in contact with the ground, which allows a metered freezing of the soil at the required depth, and the remaining part of the evaporator L1including condensing areas a and b, is made with a diameter of D1and D>D1and the difference of the diameters (D-D1) the cavity 13 is filled with air, forming an air layer, performing the role of insulation. In the capacitor area And is a manifold 3, which serves as the evaporator is made in the form of a tube ellipse section, tightly wound on the casing with a diameter of D1. Device for the cold accumulation contains condensing unit 4, consisting of a compressor 5 to the discharge pipe 6 and the capacitor 7, located above the condenser 2 to the solid frame of opaque material and connected to the discharge pipe 8 and the outlet pipe 9 by means of thermostatic expansion valve 10 through germerott 11 with the pipe 3.

The device operates as follows.

With the onset of the period when the average daily outdoor temperature drops below 0°C is the cooling and freezing of the soil due to the circulation of the refrigerant in the evaporator casing. Condensation occurs in the condenser zone In the condenser 2 has a longitudinal outer fins 12 to increase the area of heat transfer surface. The refrigerant boils in the evaporator 1, rises in the casing pipe with diameter D1to the condensing zone where it condenses in the form of a film flowing down along the walls of the same pipe in the evaporator 1, then the cycle repeats.

With the onset of the period when the average daily outdoor air temperature rises above 0°With, in the casing pipe is an increase in pressure and circulation of the refrigerant is stopped, and turns on the compressor-condenser and the regattas 4. Casing pipe is made by passing a diameter that dosed frozen soil took place at the required depth L by changing the length L1the underground part of the casing. The air gap 13 formed between the casing pipe of diameter D1and soil, performs the role of insulation required in order to ensure freezing of the soil at a certain depth LH=L1+L. due to the circulation of the refrigerant in the condensing unit 4, the pressure in the pipe decreases. The refrigerant from the condensing unit 4, located above the condenser 2 to the solid frame of opaque material, flows into the discharge line 8, then in the condensing zone And into the pipe 3, which serves as the evaporator, is made in the form of a tube ellipse section, tightly wrapped around the casing pipe of diameter D1where heat transfer occurs through the evaporation of the refrigerant in the evaporator 1. Condensation occurs in the condenser zone A. the Next couple of refrigerant from line 3 enter the discharge pipe 9 and returned to the condensing unit 4, where it is compression, condensation, and through the discharge pipe 8, the refrigerant is returned to the condensing zone And the cycle is repeated.

Use opisanog the device allows to increase the performance of the heat pipe due dosed frozen ground, to improve the efficiency due to the fact that the role of insulation performs air gap, to improve manufacturability and increase functionality due to the possibility of freezing of the soil to the desired depth.

Device for the cold accumulation containing the casing, filled with refrigerant and consisting of the evaporator, imbedded in the soil, condenser, condensing unit, located above the condenser and connected to the discharge and the discharge pipe with pipe, made in the form of a tube ellipse section, tightly wrapped around the pipe with the formation of the condensing zone, characterized in that the lower part of the evaporator L is made with a diameter D, a great rest of the remaining portion of the evaporator L1and directly in contact with the ground, thus condensing zone located on the side of the evaporator, made a smaller diameter D1between which the soil is formed by the air gap.



 

Same patents:

FIELD: refrigeration engineering, particularly to freeze ground used for ice-ground barrier creation.

SUBSTANCE: cold accumulation device comprises casing pipe filled with coolant and including ground-submersed evaporator and condenser. Device also has condensing unit arranged over condenser and connected with line by pressure and discharge pipelines. The line is located in space defined between evaporator and shell and formed as pipe having elliptical cross-section densely wound on condenser. The space between the line and the shell is filled with heat insulation means. Cold accumulation device additionally has inlet pipeline with pressure compressor inlet and outlet pipeline. Inlet pipeline extends for the full length of casing pipe from the pressure inlet to evaporator through condensation zone. Outlet pipeline passes from pressure pipeline to casing pipe condenser.

EFFECT: increased economical efficiency, reduced casing pipe defrosting time and extended operational capabilities.

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FIELD: hydraulic building, particularly to create water-tight frozen shields having height up to 100 m or more.

SUBSTANCE: device comprises freezing column arranged in borehole, outer heat exchanger which transfers heat from liquid coolant to source of cold and pump to provide coolant circulation. Freezing column is made as two coaxial tubes, namely outer, freezing, and inner, supplying, ones. Freezing tube is formed of metal. At least part of supplying tube adjoining borehole head is formed of material with low heat conductivity or supplying tube comprises material with low heat conductivity in cross-section thereof. Outer and inner tubes define annular channel for liquid coolant circulation. Upper part of borehole and part of outer tube adjoining borehole head have the greatest diameters. Gap is created between outer tube wall and borehole wall. The gap is filled with filling material taken in the form of particles having high heat conductivity in amount corresponding to predetermined particle concentration along channel length. Particle concentration in upper part adjoining borehole head is maximal.

EFFECT: increased operational efficiency due to increased capacity of liquid coolant unit to carry away heat from ground related to tall freezing column as a whole and to separate parts thereof along with uniform distribution of heat removed from freezing column parts.

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FIELD: building heat-engineering structures, particularly for forming supports of different structures in permafrost areas.

SUBSTANCE: method involves condensing gaseous working agent in condensing chamber by cooling thereof with ambient air over ground surface; moving condensed liquid under gravity through transporting channel to evaporating chamber; evaporating thereof inside evaporating chamber and returning gaseous working agent into condensing chamber. Gaseous working agent is condensed in space having volume exceeding volume of space for working liquid evaporation. T-shaped pile for ground cooling comprises vertical reinforced concrete body with horizontal support located above ground surface, condenser part of heat pipe made of tubes and having transporting channel located inside pile body and connected to finned evaporator part along heat pipe axis. The heat pipe is also located above ground surface. Condenser part is formed of symmetrically bended tube with parts inclined towards center thereof. Condenser tube diameter exceeds that of transporting channel communicating with central area of condenser part. Transporting channel part connected with evaporator part is made as inner wall thereof and forms annular cavity defined by transporting channel and outer wall of evaporator part in cross-sectional plane thereof. Volume of the transporting channel is less than condenser part volume. Transporting channel is closed with end cap located behind the cavity and has side orifices to communicate the cavity with evaporator part. The side orifices are formed in front of the end cap.

EFFECT: increased efficiency of ground cooling around the pile.

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Heated pile // 2250302

FIELD: heat engineering constructions.

SUBSTANCE: invention can be used as supports of different construction on permafrost. Proposed heated pile has reinforced concrete or metal shaft with inner or outer heated pipe in form of ribbed evaporator and condensers provided with metal strip ribbing arranged over ground surface with inclination to vertical part of shaft. Novelty is that heated pile is made T-shaped, and heated pipe in form of ribbed evaporator is made symmetrically double relative to axis of shaft with connection of some ends or its evaporators, other ends being connected with condensers. Evaporator ribbing is made in form of upward convex ring surfaces with central passes secured on inner surfaces of walls of heated pipe evaporators and uniformly distributed in height, and metal strip ribbing of condensers is element of horizontal part of T-shaped heated pile.

EFFECT: improved efficiency of heated pile, facilitated replacement of pile in case of failure.

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The invention relates to the field of underground construction, in particular for the construction and reconstruction of industrial wells in the area of sinking works

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Heated pile // 2250302

FIELD: heat engineering constructions.

SUBSTANCE: invention can be used as supports of different construction on permafrost. Proposed heated pile has reinforced concrete or metal shaft with inner or outer heated pipe in form of ribbed evaporator and condensers provided with metal strip ribbing arranged over ground surface with inclination to vertical part of shaft. Novelty is that heated pile is made T-shaped, and heated pipe in form of ribbed evaporator is made symmetrically double relative to axis of shaft with connection of some ends or its evaporators, other ends being connected with condensers. Evaporator ribbing is made in form of upward convex ring surfaces with central passes secured on inner surfaces of walls of heated pipe evaporators and uniformly distributed in height, and metal strip ribbing of condensers is element of horizontal part of T-shaped heated pile.

EFFECT: improved efficiency of heated pile, facilitated replacement of pile in case of failure.

2 cl, 4 dwg

FIELD: building heat-engineering structures, particularly for forming supports of different structures in permafrost areas.

SUBSTANCE: method involves condensing gaseous working agent in condensing chamber by cooling thereof with ambient air over ground surface; moving condensed liquid under gravity through transporting channel to evaporating chamber; evaporating thereof inside evaporating chamber and returning gaseous working agent into condensing chamber. Gaseous working agent is condensed in space having volume exceeding volume of space for working liquid evaporation. T-shaped pile for ground cooling comprises vertical reinforced concrete body with horizontal support located above ground surface, condenser part of heat pipe made of tubes and having transporting channel located inside pile body and connected to finned evaporator part along heat pipe axis. The heat pipe is also located above ground surface. Condenser part is formed of symmetrically bended tube with parts inclined towards center thereof. Condenser tube diameter exceeds that of transporting channel communicating with central area of condenser part. Transporting channel part connected with evaporator part is made as inner wall thereof and forms annular cavity defined by transporting channel and outer wall of evaporator part in cross-sectional plane thereof. Volume of the transporting channel is less than condenser part volume. Transporting channel is closed with end cap located behind the cavity and has side orifices to communicate the cavity with evaporator part. The side orifices are formed in front of the end cap.

EFFECT: increased efficiency of ground cooling around the pile.

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FIELD: hydraulic building, particularly to create water-tight frozen shields having height up to 100 m or more.

SUBSTANCE: device comprises freezing column arranged in borehole, outer heat exchanger which transfers heat from liquid coolant to source of cold and pump to provide coolant circulation. Freezing column is made as two coaxial tubes, namely outer, freezing, and inner, supplying, ones. Freezing tube is formed of metal. At least part of supplying tube adjoining borehole head is formed of material with low heat conductivity or supplying tube comprises material with low heat conductivity in cross-section thereof. Outer and inner tubes define annular channel for liquid coolant circulation. Upper part of borehole and part of outer tube adjoining borehole head have the greatest diameters. Gap is created between outer tube wall and borehole wall. The gap is filled with filling material taken in the form of particles having high heat conductivity in amount corresponding to predetermined particle concentration along channel length. Particle concentration in upper part adjoining borehole head is maximal.

EFFECT: increased operational efficiency due to increased capacity of liquid coolant unit to carry away heat from ground related to tall freezing column as a whole and to separate parts thereof along with uniform distribution of heat removed from freezing column parts.

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FIELD: refrigeration engineering, particularly to freeze ground used for ice-ground barrier creation.

SUBSTANCE: cold accumulation device comprises casing pipe filled with coolant and including ground-submersed evaporator and condenser. Device also has condensing unit arranged over condenser and connected with line by pressure and discharge pipelines. The line is located in space defined between evaporator and shell and formed as pipe having elliptical cross-section densely wound on condenser. The space between the line and the shell is filled with heat insulation means. Cold accumulation device additionally has inlet pipeline with pressure compressor inlet and outlet pipeline. Inlet pipeline extends for the full length of casing pipe from the pressure inlet to evaporator through condensation zone. Outlet pipeline passes from pressure pipeline to casing pipe condenser.

EFFECT: increased economical efficiency, reduced casing pipe defrosting time and extended operational capabilities.

1 dwg

FIELD: improving or preserving soil or rock by thermal, electrical or electro-chemical means, particularly by freezing.

SUBSTANCE: cold accumulation device comprises casing pipe filled with coolant. The casing pipe includes evaporator submersed in ground and condenser comprising condensing zones A and B. Compression-and-condensing unit is arranged over condenser and connected with pipeline through pressure and discharge lines. The pipeline is made as tube of elliptic cross-section wound on tube having D1 diameter. Casing pipe has variable cross-section so that lower evaporator part L having diameter D is located in down casing pipe part and is brought in direct contact with ground. Remainder evaporator part L1 has diameter D1, wherein D>D1. Space defined by D-D1 difference is filled with air.

EFFECT: improved economical efficiency and performance, increased manufacturability and extended functional capabilities.

1 dwg

Heat pipe // 2382972

FIELD: heating systems.

SUBSTANCE: invention is intended for cooling of ground and can be used in construction industry. Heat pipe includes tubular housing, condenser of which is located above the ground surface, and evaporator - in cooled ground, which are provided with external finnings, filler pipe for vacuum treatment and filling of heat pipe with heat carrier with its further sealing. Heat pipe is provided with removable refill capacity tightly installed on the end of heat pipe condenser by means of coupling nut and by using annular seal. Filler pipe is connected to cavity of the above capacity, through end wall of which in direction of longitudinal axis of heat pipe there tightly installed is female wrench for the sealing screw installed in the edge of condenser along longitudinal line of heat pipe. From lower edge of sealing screw there made is central channel with side outlet for passage of heat carrier from cavity of removable refill capacity to cavity of heat pipe. Side outlet is located above annular seal of sealing screw when it is not completely screwed and below the above annular seal when the screw is completely tightened. Heat pipe is provided with sealing element in the form of a plug for installation instead of removable refill capacity after filling is completed.

EFFECT: increasing heat pipe efficiency.

2 cl, 3 dwg

FIELD: construction.

SUBSTANCE: pile support intended for use in erection of structures erected in regions with permanently frozen soil comprises metal or reinforced concrete tubular shaft 1 with closed ends, which is partially deepened into soil 2. Upper end 3 is a supporting platform. Support also comprises cooling device of seasonal effect. In deepened part of shaft 1 there is a reservoir 5 arranged with substance 7 that accumulates cold. Support feature is in making reservoir 5 from elastic material and its placement with adjacency to internal surface of shaft 1 wall, and also use of water as substance that accumulates cold. Cooling device is arranged in the form of one or several vertically oriented gravitational heat pipes 4 arranged outside tubular shaft 1 with zones of evaporation 11 and condensation 9, and transport zone 10 arranged in between. Besides evaporation zone 11 in each thermal pipe is located below, and zone of condensation is arranged higher than soil surface.

EFFECT: invention provides for improved reliability of structures, using cooled pile supports, in combination with improved efficiency of cooling and freezing.

3 cl, 1 dwg

FIELD: construction.

SUBSTANCE: pile support intended for use in construction of structures erected in regions with permanently frozen soil comprises metal or reinforced concrete shaft 1 partially deepened into soil 2 and equipped with supporting platform 3 on the side of upper end. Support also comprises cooling device of seasonal action and reservoir 5 with substance 7 that accumulates cold. Support feature is in making reservoir from elastic material and placement of it outside shaft 1 in vertical well 13 closed with cover 14 with its adjacency to its walls, and also use of water as cold-accumulating substance. Cooling device is arranged in the form of one or several vertically oriented gravitational heat pipes 4 arranged outside tubular shaft 1 with zones of evaporation 11 and condensation 9, and transport zone 10 arranged in between. Besides evaporation zone 11 in each thermal pipe is located below, and zone of condensation is arranged higher than soil surface.

EFFECT: invention provides for improved reliability of structures, using supports of abovementioned design, in combination with improved efficiency of cooling and freezing, and also possibility to use supports with monolithic shaft.

5 cl, 1 dwg

FIELD: construction.

SUBSTANCE: device for stabilisation of plastic-frozen soils with year-round mode of operation for accumulation of cold in base of structures includes underground and aboveground parts of tubular tight vessel filled with refrigerating fluid, underground part of which is evaporator, and aboveground one is condenser equipped with shelf, having thermoelectric modules in the form of Peltier elements battery arranged on its surface. Device is equipped with thermal pipe, one end of which has shelf joined to hot surface of thermoelectric modules. The other end, being zone of condensation, has ribbed surface, besides axis of condensation zone has the angle φ of inclination to horizon.

EFFECT: improved efficiency of device operation and expansion of area of application.

3 cl, 3 dwg

FIELD: construction.

SUBSTANCE: system for temperature stabilisation of structures foundation on permafrost soils equipped with hydraulic lock, levelling vessel, serially connected to condenser and evaporator arranged in foundation soil fill, joined to pipelines that supply and drain heat medium. It additionally comprises vertical heat-exchangers-evaporators arranged along depth of foundation soil fill, which are made as tube in tube, and their lower ends are plugged, and upper ends are connected directly to evaporator, which is arranged in the form of system of pipes laid in horizontal plane evenly along whole area of foundation soil fill, equipped with a layer of heat insulation joined by means of pipelines by its supply end to condenser and by its drain end - by means of pipelines with a levelling vessel. Height of above mentioned vertical heat-exchangers-evaporators is equal to at least distance "b" between border of depth of "X-X" evaporator arranged in the form of piping system laid in horizontal plane evenly along whole area of foundation soil fill, and upper border of "Z-Z" permafrost soils depth. Lower part of inner pipes of specified heat-exchangers-evaporators arranged concentrically to outer pipes is arranged with perforation, and upper part is arranged as funnel-shaped.

EFFECT: improved reliability, efficiency, operational and technical properties of systems for temperature stabilisation, reduced material intensity.

6 cl, 5 dwg

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