CN205420614U - High -speed rotating heat pipe formula hot -rolling - Google Patents

Abstract

The utility model discloses a high -speed rotating heat pipe formula hot -rolling, hot -rolling one end is sealed, and the other end seals after having beaten numerous heat pipe holes, the heat pipe hole be the inclined hole, the inclination is 0.5~1.5, numerous heat pipe holes be 50~100, the interval is 7~10 millimeters, wherein, wholly seal in the mutual UNICOM of confined one end of hot -rolling elder generation in the heat pipe hole. The utility model discloses a product has that the loss of heat transfer efficiency height, resistance is little, compact structure, reliable operation and the few advantage of maintenance cost. This technique has obtained extensive application in space technology, electron, metallurgy, power, oil, chemical industry, machinery, weaving, chemical fibre, plastics, various trade.

Description

High speed rotating heat pipe-type hot-rolling

Technical field

This utility model relates to a kind of heat pipe type hot-rolling, more particularly, relates to a kind of high speed rotating heat pipe-type hot-rolling.

Background technology

The heat pipe type hot-rolling of high speed rotating, refer generally to rotating speed more than 600rpm, centrifugal force due to the liquid medium in pipe, liquid medium is in the outer wall of heat pipe, and the heating coil of routine is the inwall of heat pipe by inductive electromagnetic heating target, heating target is substantially gaseous substance, therefore such product thermal efficiency is the highest, and partial rollers fever sensation of the face load once increases a lot, roll surface temperature is also difficult uniform.

The kind of hot-rolling is in different poses and with different expressions, needs surface temperature uniformly and thermic load, roll surface number heat pipe-type vapor liquid equilibrium hot-rolling that heat exchange amount is big do not belong to.In chemical fibre FDY technique, the fourth, fifth pair of hot-rolling in order to complete two grades of drawing-offs, two grades of thermal finalizations are used, particularly spinning terylene or the nylon total fiber number heavy denier long filament more than 3000d, the heat that roll surface local is taken away is the biggest, roll surface temperature is caused to produce gradient, having a strong impact on the quality of finished silk, this is the deadly defect that horizontal hot tube type hot-rolling exposes.

Summary of the invention

The purpose of this utility model is to provide a kind of high speed rotating heat pipe-type hot-rolling.

High speed rotating heat pipe-type hot-rolling of the present utility model, hot-rolling one end is closed, the other end is equipped with numerous heat pipe holes rear enclosed, described heat pipe hole is inclined hole, and gradient is 0.5 °～1.5 °, and described numerous heat pipe holes are 50～100, spacing is 7～10 millimeters, wherein, heat pipe hole is at the mutual UNICOM in one end that hot-rolling is first closed, Integral-sealing.

High speed rotating heat pipe-type hot-rolling of the present utility model, the closing of hot-rolling one end, the other end is equipped with numerous heat pipe holes rear enclosed, and described heat pipe hole is inclined hole, and gradient is 0.7 °～1.2 °, and described numerous heat pipe holes are 60～90, and spacing is 7.5～9.5 millimeters.

In high speed rotating heat pipe-type hot-rolling of the present utility model, the centerline diameter of described heat pipe hole rear enclosed end is more than D/2～2D of first blind end centerline diameter, and wherein D is heat pipe aperture.The roller wall thickness of hot-rolling is 8～32mm, and heat pipe bore dia is Φ 3～Φ 16mm, when heat pipe aperture is less than Φ 3mm, should set capillary rustless steel feltwork cloth at heat pipe inner wall, be back to the thermal treatment zone accelerating condensed fluid.

In high speed rotating heat pipe-type hot-rolling of the present utility model, also comprise one section and break straight hole, one section of docking heat pipe beating inclined hole, or one section beat straight hole, one section be the heat pipe of the bigger ring cavity structure of diameter.As long as heat transfer medium liquid can focus on one because of centrifugal force during high speed rotating, just can reach high heat transfer efficiency, make this media fluid of filling seethe with excitement rapidly.

In high speed rotating heat pipe-type hot-rolling of the present utility model, the heating zone length of hot-rolling is the 25～50% of roller overall length, preferably 30～45%, mode of heating is high-frequency electromagnetic heating, heating target is liquid medium, and liquid medium is water or naphthalene, such as deionized water or distilled water.When medium is water, operating temperature is less than 240 DEG C；When medium is naphthalene, operating temperature is less than 400 DEG C.

In the heat transfer processing method of high speed rotating heat pipe-type hot-rolling of the present utility model, cavity vacuum degree closed by described heat pipe need to reach below 10mm water column, pours into liquid medium amount and is less than the 50% of total cavity volume volume, is preferred with 15～35%.And using high-frequency electromagnetic to heat, power selection is relevant with roll surface heat radiation, relevant with first heating rate, the coil outer surface of radio-frequency induction coil and the distance of roll body inwall are 2～8mm, and inductance value is between 50～120 microhenrys.

This utility model is the skill upgrading of a kind of high speed rotating heat pipe type hot-rolling, and this heat roller device is energy-saving and environment-friendly, the most same closing arcola of the heat pipe of closed at both ends, and high frequency occurring source coordinates induction heating circle to be exactly that this closes the thermal source of boiler.

This utility model is set about from improving heat transfer efficiency, emphasis solves how to carry out a bigger heat exchange difficult problem in heat pipe effect, the starting point is exactly to allow liquid medium absorb the big heat that boiling needs, it is the biggest that heat is released in roll surface heat exchange, this allows steam condensation heat release supply, the present invention beat inclined hole and then provides the letter that a condensed fluid quick backflow puts in place and connect power.

This utility model is the hole that heat pipe hole breaks into certain angle, then during roller high speed rotating, liquid medium can be because of the big one end of centrifugal force automatic moving to diameter, hydraulically full pipe one end, seethe with excitement after accepting inductive electromagnetic heating, the steam produced is transported to rapidly the heat pipe other end, again because of roll surface quantity of heat given up under vapor liquid equilibrium situation, quickly carry out condensation heat, liquid medium is back to again fire end, go round and begin again, form excellent adopting heat pipes for heat transfer effect, have that heat transfer efficiency is high, drag losses is little, compact conformation, reliable operation and a few advantage of maintenance cost.This technology is widely used in space technology, electronics, metallurgy, power, oil, chemical industry, machinery, weaving, chemical fibre, plastics, various industry.

Accompanying drawing explanation

Fig. 1 is the schematic diagram of high speed rotating high-quality heat pipe-type hot-rolling of the present utility model.

Detailed description of the invention

This utility model is expanded on further below in conjunction with the accompanying drawings with specific embodiment.Embodiment is interpreted as being merely to illustrate this utility model rather than limiting protection domain of the present utility model.After having read the content that this utility model is recorded, this utility model can be made various changes or modifications by those skilled in the art, and these equivalence changes and modification fall into this utility model claim limited range equally.

Embodiment 1

With the typical setting roller of nylon FDY techniqueAs a example by, tradition hot-rolling way is: roller external diameter, roller internal diameter, wall thickness 12.5mm, uniformly makes a call to 60～64 in circle distributionThe circular hole of deep 320, the one end in hole is closed, is not beaten, other end UNICOM, media flowable, pour into cumulative volume 35～the pure water about 276～315CC of 40% under vacuum environment, 50HZ line-frequency induction coil is placed at the center of roller, and coil turn is more than at least 200, and inductance value is between 50～120 microhenrys.Heater length reaches 300mm, set this hot-rolling to work at a temperature of 180 DEG C, then in heat pipe cavity, during VLE, pressure is 1.01MPa, so under high pressure, rotating speed 4000 ms/min, revolution reaches 6700rpm, and liquid phase water all focuses on the outer wall of heat pipe due to centrifugal action, and the main heating target of induced magnetism line vortex is the inwall of roller.Inwall contacts with steam, and heat conduction efficiency is on the low side, makes outer wall intensification aqueous water that medium just can be made to vaporize by metallic conductance heat transfer, therefore this structure hinders giving full play to of adopting heat pipes for heat transfer effect.This utility model willIt is the angle of 1 ° that hole breaks into roller centrage, sees shown in figure (1), center circle at the bottom of rollerRoller front end center circle, the two bigger 11.3mm of circle, be equivalent to twoThe 80% of bore dia, therefore roller once high speed rotating, liquid phase medium all focuses on the root end of roller, and high-frequency induction heating loop length of the present utility model also only has the 1/2 of former power frequency coil or less, inductive electromagnetic heating system concentrates heating liquid medium, and the converting heat making rapidly electromagnetic eddy produce is the latent heat of vaporization, maximal efficiency has waved heat pipe effect with sending out, after having reached the output of roll surface big heat, the effect that can supplement in time, this is that the most any hot-rolling does not reaches.

The machining of inclined hole, drill gun technology must be used, coordinating electronics dividing head, the guide hole bored is entered well in strict pretreatment, it is ensured that 60～64 holes, angle is consistent, deviation ＜ ± 3%, the depth tolerances of deep hole should be accomplished ± 0.5mm, be entered to bore end and be also performed to machining, so as each deep hole root UNICOM, Integral-sealing.The vacuum cavity inwall of roller should do purification process or plating fine copper, strictly prevents from occurring under hot environment the electrochemical reaction of medium and metal, generates on-condensible gas and produces vapour lock, affects roll surface thermal conversion, make the characteristic of VLE homogeneous temperature lose efficacy.Roller front end also needs to make a call to a diameterThe temperature sensor hole of deep 110mm, in order to temperature signal passes to temperature control system, then output information controls the work of high frequency occurring source.

The hot-rolling assembled by above-mentioned requirements rotates with 1000rpm rotating speed, design temperature is 120 DEG C, start only to need 6 minutes just to reach design temperature from room temperature, roll surface temperature is surveyed after balancing 4 minutes, 4 position amount temperatures are poor ± and 0.5 DEG C of (actual for measurement error) roll surface temperature is uniformly that heat pipe-type conducts heat the feature of most basic VLE hot-rolling.

Above-mentioned hot-rolling is continuously heating to 180 DEG C, and raising goes to 6000rpm, the present invention more demonstrates the compensation temperature function under the gentleest bigger situation of thermic load of heat pipe effect, the warm strand of total fiber number 5000d is hung on roll surface around Liang Quan, the water of wet strand is dried at once, the heat that water evaporation is taken away is compensated rapidly by thermo-roll surface, and actual measurement roll surface temperature deviation is less than 2 DEG C.

Claims (5)

1. a high speed rotating heat pipe-type hot-rolling, it is characterized in that hot-rolling one end is closed, the other end is equipped with numerous heat pipe holes rear enclosed, described heat pipe hole is inclined hole, and gradient is 0.5 °～1.5 °, and described numerous heat pipe holes are 50～100, spacing is 7～10 millimeters, wherein, heat pipe hole is at the mutual UNICOM in one end that hot-rolling is first closed, Integral-sealing.

High speed rotating heat pipe-type hot-rolling the most according to claim 1, it is characterised in that hot-rolling one end is closed, and the other end is equipped with numerous heat pipe holes rear enclosed, described heat pipe hole is inclined hole, gradient is 0.7 °～1.2 °, and described numerous heat pipe holes are 60～90, and spacing is 7.5～9.5 millimeters.

High speed rotating heat pipe-type hot-rolling the most according to claim 1 and 2, it is characterised in that the centerline diameter of described heat pipe hole rear enclosed end is more than D/2～2D of first blind end centerline diameter, and wherein D is heat pipe aperture.

High speed rotating heat pipe-type hot-rolling the most according to claim 1 and 2, it is characterised in that the roller wall thickness of described hot-rolling is 8～32mm, heat pipe bore dia is Φ 3～Φ 16mm.

High speed rotating heat pipe-type hot-rolling the most according to claim 1 and 2, it is characterised in that when heat pipe aperture is less than Φ 3mm, capillary rustless steel feltwork cloth should be set at heat pipe inner wall.