Heat pipe

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

 

The alleged invention relates to the construction of thermal devices using heat pipe (TT), and is intended as a device for tahaliyani on the depth of the soil in winter for underground refrigerators, to provide year-round stabilization of permafrost for the Foundation supports structures in permafrost areas to avoid their sagging during thawing of the soil in summer.

Known thermal pile (RF patent No. 2250302)containing the fittings are made at the ends of the capacitors are intended for connection thereto emergency system thawing and subsequent lifting piles of soil for repair or replacement of its healthy. The specified connection is made by performing them in the holes and welding thereto of the inputs and outputs of defrosting. The lack of piles is that it is not intended for repair, refilling with subsequent sealing it without Dismounting from the ground, which limits the effectiveness of its application.

Famous TT (book S.v.alekseev, Bieringen, Ipprecedence. Low-temperature heat pipes for space applications in 2 volumes. Technology and research in terrestrial conditions. Volume 2. Scientific publication. Recommended for publication by the Scientific and technical Council of the FSUE Sri SIA "Luch "(Federal Agency is about nuclear energy), JSC "Printing" news", 2006. P.73-74)containing the nipples (tubulation) to ensure deep cleaning cavity TT from non-condensable gases, dosed filling fluid with subsequent compression of the filling nozzle when the vapor pressure of the fluid above atmospheric (to exclude the ingress of air, sealing the clamping argon-arc welding at room temperature after controlling for leaks of coolant through the pinches. The lack of TP is that it can be refilled only once, which limits the effectiveness of its application.

As the prototype is set to TT (Sci. Heat pipes. Theory and practice. Translation from English Vasilieva. Moscow. Engineering 1981. P. 167-168), which contains a filling (filling) the tube through which carry out the pumping cavity TT and fill of the coolant, which is then tightly compress with the subsequent welding. The disadvantage of this TT is that it can be refilled only once, which limits the effectiveness of its application.

The objective of the invention is improving the effectiveness of TT.

The problem is solved due to the fact that the heat pipe is made with a removable filling capacity, tightly installed on the condenser end of the heat pipe by a coupling nut is with the use of an annular seal, and gas pipe connected to the cavity of the listed capacity through the end wall of which in the direction of the longitudinal axis of the heat pipe is tightly integrated Allen key for the newly introduced sealing screw mounted in the end face of the capacitor along the longitudinal line of the heat pipe with the use of his ring seal with the lower end of the sealing rotor is made the Central channel with a lateral outlet for passage of fluid from the cavity of the removable refill container into the cavity of the heat pipe, and the specified side exit is located above the annular seal sealing screw when not fully twisted his position and below the annular seal when fully twisted sealed position of the screw, the heat pipe is provided with additional sealing element in the form of plugs to be installed instead of the removable fuel tank after filling; annular seals respectively for sealing screws and plugs made of aluminum alloy AL.

The essence of the invention lies in the fact that TT made with the possibility of repeated refilling with ensuring its subsequent reliable sealing, thereby improving the efficiency of its use as a device Sahelian soil depth by repair without the of montage from the soil, and at ground experimental castings upgrade options for different temperature conditions by experimental selection of the appropriate optimal doses refilling coolant.

Analysis of the known technical solutions in the area of study allows to draw a conclusion about the absence of signs, similar to the set of features of the claimed object.

The proposed solution is shown in figure 1, 2, 3: figure 1 shows a General view of the heat pipe; figure 2 - shows the TT in the context of a removable filling capacity 6; figure 3 shows a section view of a part of the TT with a cover 16, when TT is ready for operation.

TT comprises a tubular housing 1, a condenser 2 which during operation TT feature above the ground surface, and the evaporator 3 which in operation have to be cooled in the soil, for example, is made with the external finned respectively 4 and 5, the removable refill capacity 6, hermetically mounted on the end of the condenser 2 through the Union nut 7 with the use of an annular seal 8 to the cavity which is connected gas pipe 9 and through its end wall 10 in the direction of the longitudinal axis of the heat pipe is tightly integrated Allen key 11 for the newly introduced sealing screw 12 mounted in the end face of the capacitor 2 along about Olney line TT using the ring seal 13, and with the lower end of the sealing screw 12 is the Central channel 14 side outlet 15 for the passage of fluid from the cavity of the removable fuel tank 6 into the cavity of the heat pipe, and the specified side exit 15 is located above the annular seal 13 sealing screw 12 while not completely twisted his position and below the annular seal 13 when fully twisted sealing the screw 12, a heat pipe is provided with an additional sealing element in the form of stub 16 to install it instead of the removable fuel tank 6 by means of a cap nut 7 after filling TT.

O-ring seals 13 and 8, respectively, for sealing the screw 12 and the stub 16 is made of aluminum alloy AL. Sealed Allen key 11 with the inner wall of the removable fuel tank 6 is provided the use of o-rings 17.

The proposed TT as a device for Sahelian soil (for example, for underground seasonal fridge) or for lowering the temperature of the permafrost area for use as supports for the construction of piles installed vertically or tilted in immediate proximity to the evaporator 3 with part of the construction of piles, located in the ground and relying on the area of permafrost, for example, g is the Ubin 3-5 PM And the capacitor 2 TT is located above the ground surface. In the winter time when the temperature of the air above the soil below the temperature of permafrost, for example, respectively minus 40C and -3C, TP intensively removes heat from zoologicheskogo ground through the evaporator 3 due to the fact that it evaporates the coolant (for example, ammonia or kerosene) with the absorption of heat from the ground (permafrost)that surrounds the evaporator and thereby it is cooling down (lowering the temperature) to minus 10-15C. From the evaporator 3 heat is removed by steam coolant, rising up into the condenser 2, where under the action of lower its temperature close to ambient temperature, the steam is condensed into liquid, transferring the heat to the condenser and then to the ambient air, and under the action of gravity, the liquid flows into the evaporator 3 and, thus, provides intense cooling down of the soil due to continuous evaporation-condensation effect of heat transfer from the evaporator 3 to the condenser 2. In summer, the heat pipe does not work, as the temperature of the capacitor becomes higher than the temperature of the evaporator and, accordingly, they are not the evaporation and condensation of steam. The temperature of the soil around the evaporator is gradually increasing due to the influx to him those whom La conductivity from the surrounding areas of the soil. For reliable year-round provision of permafrost, upon which the building (Foundation) piles, cooling of the ground during the winter period should be provided to such negative temperature to it over the summer period did not exceed a temperature of minus 7-5C. the Increase of the soil temperature in summer is due to the heat supply to him through the Foundation piles and from the top thawed in summer, the upper layers of the soil. To reduce the intensity of ground thaw in summer, the outside surface of the soil, as a rule, teploizolirovat from the ambient air, and building piles is performed with the lowest possible thermal conductivity, for example, by the use of foamed concrete. The presence of external fins 4 and 5 respectively on the condenser 2 and the evaporator 3 provide the intensity of their thermal communication respectively with the surrounding air and scholarium plot of ground.

The feature of using TT for Sahelian soil is hard climatic conditions of their operation within 15-30 years in high humidity and large variations of temperature effects. This causes intensive corrosion of condenser TT, and long life creates conditions for the formation of non-condensable gases in the cavity TT or partial depressurization. Replacement of either is DSEi down new TT is very time consuming because of the need for dismantling the faulty TPS with the subsequent installation of the new TT. To ensure maintainability TT without removing it from the ground it is made with a removable filling capacity 6, hermetically mounted on the end of the condenser 2, a heat pipe by means of the Union nut 7 with the use of an annular seal 8 and the pipe 9 is connected to the cavity of the specified container 6 through the end wall of which in the direction of the longitudinal axis of the heat pipe is tightly integrated Allen key 11 for the newly introduced sealing screw 12 mounted in the end face of the capacitor along the longitudinal line of the heat pipe with the use of an annular seal 13 with the lower end of the sealing screw 12 is the Central channel 14 side outlet 15 for passage of the coolant from the cavity of the removable fuel tank 6 into the cavity of the heat pipe, and the specified side exit 15 is located above the annular seal 13 sealing screw 12 while not completely twisted his position and below the annular seal 13 when fully twisted sealing the screw 12. A heat pipe is provided with an additional sealing element in the form of stub 16 to be installed instead of the removable fuel tank 6 after filling TT, and annular seals respectively for sealing the screw 12 and the stub 16 is made of aluminum alloy AL.

In the case of the AE output TP of the system will defrost plot of ground, which is based on pile construction, its position will change. On this basis or for special temperature monitoring of the performance of TT are overcharging TT without removing it from the soil. To do this, Unscrew the ring cap nut 7, remove the plug 16, instead hermetically install removable petrol tank 6. Using the Allen key 11 set the sealing screw 12 in an open position, in which through the Central channel 14 and the side output 15 of the cavity of the removable fuel tank 6 and TP are connected (see figure 2). Through the pipe 9 vacuum cavity TT, then fill it under pressure helium, pressurized TT with sealing screw 12 and using a leak detector to check the tightness of the housing. If depressurization of the housing 1 has occurred over the ground surface or at shallow depths, the leaking section of the housing 1 is brewed by welding and repeat the operation for checking the tightness of the housing 1. Convinced of the tightness of the housing 1 TT, have it occur.

It should be noted that when this can be that TP did not provide the required health is not due to leaks in the enclosure, and because of the formation of non-condensable gas.

The overcharging is as follows. Vacuum cavity TT, for ruleout the desired dose of fluid. Using the Allen key 11 set the sealing screw 12 in a closed position in which the side outlet 15 is located below the annular seal 13 and TT becomes sealed (see figure 3). Unscrew the ring cap nut 7 and instead of the removable fuel tank 6 install the plug 16 by pressing it with some force to the ring seal 8 with Union nut 7. In the process of repair (refilling) TT o-ring seals 8 and 13 are changed for new ones. Annular seals 17 are made not of metal and change them when the loss of tightness in the process of using removable petrol tank 6.

After refilling TT is ready for further operation.

The proposed TT provides the opportunity for its effective application in light of the results of ground testing upgrade options for different temperature conditions to ensure the effectiveness of its work by defining appropriate optimal doses of refueling that is possible due to its repeated refilling.

Currently, the company conducted experimental testing of the proposed TT.

1. Heat pipe containing a tubular casing, a condenser which is located above the ground surface, and the evaporator to be cooled in the soil, carried out the, for example, with an external finned, a filling pipe for evacuating and filling with heat pipe cooled with subsequent sealing, characterized in that the heat pipe is made with a removable filling capacity, tightly installed on the condenser end of the heat pipe by means of the Union nut using the ring seal and the gas pipe is connected to the cavity of the listed capacity through the end wall of which in the direction of the longitudinal axis of the heat pipe is tightly integrated Allen key for the newly introduced sealing screw mounted in the end face of the capacitor along the longitudinal line of the heat pipe with the use of an annular seal with the lower end of the sealing rotor is made the Central channel with a side outlet for passage of fluid from the cavity of the removable refill container into the cavity of the heat pipe, and the specified side exit is located above the annular seal sealing screw when not fully twisted his position and below the annular seal when fully twisted sealed position of the screw, the heat pipe is provided with an additional sealing element in the form of plugs to be installed instead of the removable fuel tank after filling.

2. Heat pipe according to claim 2, characterized in, is that the o-ring seals, respectively, for sealing screws and plugs made of aluminum alloy HELL 00.



 

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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.

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The invention relates to the mining industry and can be used for storage of coal, prone to spontaneous combustion

The invention relates to the mining industry and can be used in the construction of underground structures

The invention relates to the field of construction, namely, devices for cooling and freezing of the soil used in the construction of engineering structures constructed in permafrost

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

The invention relates to the construction, namely, ground freezing is used to create Leopardi fencing

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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

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