CN2501572Y - Novel heat-transfer jacket - Google Patents

Abstract

The utility model is a new heat transfer jacket, which is made up of a cylinder and an electrothermal rod or an electrothermal rod and a mixing equipment connected with each other. The mixing equipment is made up of a continuously variable speed control motor, a rotating shaft and a stirring paddle, the electrothermal rod is inserted into the cylinder from an open place of an upper sealing plate. The utility model utilizes the asymmetry of a jacket, effectively promotes heated material turbulence mixing through the mixing equipment, strengthening heat transfer effect, with a homogeneous heat transfer temperature and a high heat transfer coefficient. Compared with general high temperature heat transfer jacket, the utility model leaves out appurtenance with high safe requirement and high cost such as steam pressure boiler or heat conduction oil cycle pump, reducing facilities thermal loss such as high temperature pipe, improving heat transfer efficiency, with a high economy and practicality. The utility model is simple in structure, convenient and practical, reducing demand for sealing the heat transfer jacket, and efficiently avoiding heat oil leaking.

Description

A kind of novel heat-transferring jacket

(1) technical field

The utility model relates to the heat transfer technology field, specifically is meant a kind of novel heat-transferring jacket.

(2) background technology

The general Boiler Steam that adopts of chuck heating heats, but when being used for high temperature high vacuum stirring thin film evaporation (molecule evaporation/distillation) and high-temperature reaction equipment, heating-up temperature needs about 200 ℃, this just needs middle and high pressure steam boiler, and corresponding water back also needs to carry out safety verification through the boiler pressure testing department.And in fact, molecular clock and the needed quantity of steam of medium and small high-temperature reaction equipment are little, and be very uneconomical with middle and high pressure boiler.The heat transfer unit (HTU) of technical fields such as molecule evaporation generally adopts the conduction oil heat transfer system at present, and this system mainly is made up of heat-conducting oil furnace, Heat-transfer Oil Pump and corresponding high temperature circulation pipeline etc.Heat-conducting oil furnace adopts electrothermal tube heating mostly, when conduction oil is heated to when temperature required, conduction oil is transported in the heat-transferring jacket of molecule evaporimeter by Heat-transfer Oil Pump, is sent back to heat-conducting oil furnace after the heat release and recycles.Because the flow velocity of conduction oil in chuck is low, is difficult to reach turbulent flow,, and, make heat transfer efficiency lower because auxiliary devices such as pipeline have increased heat loss so the heat transfer coefficient of conduction oil is less.And facilities such as Heat-transfer Oil Pump and high temperature circulation pipeline cost an arm and a leg, and consumable accessory is many.Based on above-mentioned situation, some molecule evaporation/distillation equipment adopts electrical bar is directly inserted conduction oil by the bottom of heat-transferring jacket outer wall.But this heat transfer type is very inhomogeneous, is easy to generate hot-spot, and because electrical bar inserts the position falling heat-transfer oil of outer wall, is very easy to take place conduction oil and reveals.In order to improve this heat transfer type, be covered with the metal heat transfer sheet around someone electrical bar in the heat-transferring jacket of falling heat-transfer oil, also have the people the chuck outer wall of falling heat-transfer oil evenly compactly around on electric heating tie up, because sheet metal good heat conductivity, improved the inhomogeneities of conducting heat to a certain extent, but effect is not fairly obvious.In a word, the conduction oil free convection phenomenon in the above-mentioned various heat-transferring jackets all clearly makes heat transfer coefficient on the low side, and it is even inadequately to conduct heat.

(3) summary of the invention

The purpose of this utility model is exactly the defective that exists in the prior art in order to solve, and a kind of heat transfer efficiency height, heat transfer novel heat-transferring jacket even, simple in structure are provided.

A kind of novel heat-transferring jacket described in the utility model, it is interconnected to constitute by cylindrical shell and electrical bar, wherein, cylindrical shell is interconnected to constitute by outer wall and evaporation wall, the cylindrical shell two ends are fixed with upper sealing plate and following shrouding respectively, be provided with temperature sensor interface in the middle of the outer wall, the upper end is provided with thermal oil return, and following shrouding is provided with the heat conductive oil inlet interface tube, it is characterized in that, agitating device is installed on cylindrical shell, this agitating device is by stepless speed-regulating motor, rotating shaft and paddle are interconnected to constitute, and wherein, rotating shaft is connected with stepless speed-regulating motor, and being fixed with paddle, rotating shaft is inserted cylindrical shell from the opening part of upper sealing plate.

In order to implement the utility model better, electrical bar can insert cylindrical shell from the opening part of upper sealing plate.

The utility model compared with prior art has following advantage and effect:

1. the utility model has adopted agitating device, utilizes the asymmetry of chuck, can effectively promote the turbulent flow of heat medium to mix, and has strengthened heat-transfer effect, and it is even to have a heat transfer temperature, the characteristics that heat transfer coefficient is high.

2. the utility model is compared with general high temperature heating jacket, the also high auxiliary devices of safety requirements height, expense such as steam pressure boiler or conduction oil circulating pump have been saved, reduce the heat loss of facilities such as high-temperature pipe simultaneously, improved heat transfer efficiency, had higher economical efficiency and practicality.

3. electrical bar of the present utility model inserts the chuck cylindrical shell from upper sealing plate, and the insertion position is not immersed in the conduction oil, has effectively avoided the leakage problem of conduction oil, and has reduced the seal request of heat-transferring jacket.

4. the utility model is simple in structure, and is convenient and practical.

(4) description of drawings

Fig. 1 is a kind of novel heat-transferring jacket structural representation of the present utility model.

(5) specific embodiment

Below in conjunction with accompanying drawing, the utility model is further described.

As shown in Figure 1, outer wall 9 and evaporation wall 1 constitute cylindrical shell, and its two ends are fixed with upper sealing plate 2 and following shrouding 11 respectively.Electrical bar 12 preferably evenly distributes along the cylindrical shell circumferencial direction, and from the fixing chuck cylindrical shell that inserts of the opening part of upper sealing plate 2, the approaching as far as possible shrouding 11 down of insertion depth, add airtight and watertight padding 4 between opening and the electrical bar 12, adopt the flange seal structure to connect, reveal for fear of conduction oil from sealing surface, flange sealing surface exceeds upper sealing plate 2.Be provided with temperature sensor interface 7 in the middle of the outer wall 9, the upper end is provided with thermal oil return 5, and to the pipeline of expansion tank overflow, following shrouding is established heat conductive oil inlet interface tube 10 after being heated as conduction oil, also as cleaning the blow-off pipe interface.Stepless speed-regulating motor 3, rotating shaft 6 and paddle 8 are interconnected to constitute agitating device, agitating device generally has two or more, preferably evenly arrange and install along the chuck periphery, consider that liquid temperature differential in the chuck is mainly axially, paddle 8 is generally selected for use and can mainly be promoted the structure of axially mixing, as propeller blade etc.Rotating shaft 6 is also inserted from the opening part of upper sealing plate 2, and be connected with the opening movable sealing of upper sealing plate 2, the height of movable sealing place preferably exceeds the use liquid level (upper sealing plate 2 places) of conduction oil, do the requirement that can reduce like this to movable sealing, promptly use general movable sealing structure (as packing seal) just can reach instructions for use (because chuck is to be in atmospheric operation), if heating-up temperature is not really high, also can seal, allow a small amount of conduction oil liquid level to be exposed to atmosphere.

The utility model is implemented in the inner-cooled agitated thin-film evaporator, and the heat transfer area of this evaporimeter is 0.25m ²About 70 liters of chuck volume, the upper, middle and lower of heat transfer wall respectively are equipped with surveys the thermocouple that wall temperature is used, and under prior art, the conduction oil in the chuck is heated with electrical bar, when 137 ℃ of last wall temperatures, middle wall temperature is 35 ℃, and following wall temperature is 29 ℃ (room temperatures), and the chuck temperature difference up and down is higher than 100 ℃ unexpectedly, in fact have greater than 2/3 heating surface (area) (HS inoperatively, the electrical heating effect extreme difference that only depends on free convection is described.After using the utility model instead, select the electric blender of two 500W for use, chuck conducts heat very even (before the charging, not identical at three electric thermo-couple temperature readings of three places, upper, middle and lower of heating surface outer wall installing, as to illustrate that whole chuck temperature up and down is all the same).This illustrates that its turbulent extent is very high, and the conduction oil in the chuck mixes very complete.When chuck conduction oil body temperature was 175 ℃, the wall temperature of upper, middle and lower was 172 ℃.

Claims (2)

1. novel heat-transferring jacket, it is interconnected to constitute by cylindrical shell and electrical bar (12), wherein, cylindrical shell is interconnected to constitute by outer wall (9) and evaporation wall (1), the cylindrical shell two ends are fixed with upper sealing plate (2) and following shrouding (11) respectively, be provided with temperature sensor interface (7) in the middle of the outer wall (9), the upper end is provided with thermal oil return (5), following shrouding (11) is provided with heat conductive oil inlet interface tube (10), it is characterized in that on cylindrical shell, being equipped with agitating device, this agitating device is by stepless speed-regulating motor (3), rotating shaft (6) and paddle (8) are interconnected to constitute, wherein, rotating shaft (6) is connected with stepless speed-regulating motor (3), and is fixed with paddle (8), and rotating shaft (6) is inserted cylindrical shell from the opening part of upper sealing plate (2).

2. a kind of novel heat-transferring jacket according to claim 1 is characterized in that electrical bar (12) inserts cylindrical shell from the opening part of upper sealing plate (2).

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