CN201530970U - Highly-efficient heat transfer oil heating device - Google Patents

Abstract

Disclosed is a highly-efficient heat transfer oil heating device. A burner is arranged outside an inlet of an inner layer pipe; a gas flue disposed at the position of an outlet of the inner layer pipe is communicated with the inner layer pipe; outer layer pipes are sleeved on a gas inlet section and a gas outlet section of the inner layer pipe; space with two ends sealed is formed between the inner layer pipe and the outer layer pipes; the two outer layer pipes are mutually communicated through communication pipes; the outer layer pipe sleeved on the gas outlet section of the inner layer pipe is communicated with an outlet of a heat transfer oil pump through a pipeline; the outer layer pipe sleeved on the gas inlet section of the inner layer pipe is communicated with an inlet of a heating coil through the pipeline; an outlet of the heating coil and an expansion tank are communicated with an inlet of the heat transfer oil pump through repair valves disposed on the pipeline and communicated with the outlet of the heat transfer oil pump through safety valves arranged on the pipeline; and the inner layer pipe in the space formed by the inner layer pipe and the outer layer pipe is provided with spiral baffle boards. The highly-efficient heat transfer oil heating device can be applied to asphalt distributors, asphalt transporting vehicles, synchronous chip sealers, asphalt dumping devices and emulsified asphalt production vehicles.

Description

The high-efficiency heat conduction oil heating unit

Technical field

The utility model belongs to construction, repairing, repairs or removes the auxiliary equipment technical field that road or similar paving are used, and is specifically related to surface-treated equipment is carried out on the road surface of finishing.

Background technology

Along with China's rapid economic development, the mileage of highway in China is in continuous increase, the bituminous concrete road has the intensity height, planarization is good, it is steadily comfortable to drive a vehicle, noise is low, advantages such as day-to-day maintenance is low, many countries all preferentially adopt when building speedway, China is no exception, development along with China's communication, formed freeway net at present in the whole nation, the fast development of speedway, in the development of the national economy of China, brought into play important role, speedway has become a kind of sign that China market economic condition inferior segment divides flourishing degree as the powerful support that drives socio-economic development.Increase day by day along with the speedway vehicle flowrate, the overload transportation, the bituminous concrete road is through the use of long period, asphalt roads is under the effect repeatedly of vehicular load, occurred dissimilar and disease degree, particularly large-scale, in the process that heavy vehicle is exercised on speedway, damage to the asphalt roads surface is comparatively serious, rut appears in asphalt concrete pavement, gather around bag, be full of cracks, diseases such as smooth surface, cause taking place traffic accident, bring loss to the people's lives and property, seriously have influence on traffic safety, need partly or entirely keep in repair asphalt concrete pavement.

Along with the fast development of communication, road building machinery is also at high speed development, for speed of application, shortening engineering time, the making cost that reduces asphalt roads of accelerating asphalt roads, the labour intensity that alleviates the worker have been made significant contribution.In the process of the newly-built of asphalt roads and maintenance, pitch sprinkling car in the road building machinery that uses, heated bitumen tanker, synchronous surface dressing machine, asphalt dumping equipment, mulseal are produced in the equipment of transportation such as car and construction pitch and bituminous concrete, are provided with hot oil heater.

Existing hot oil heater is sleeved in the outer layer pipe by inner layer pipe and constitutes, form the space of a closed at both ends between inner layer pipe and the outer layer pipe, conduction oil flows out from end inflow, the other end in space between inner layer pipe and the outer layer pipe, because the sectional area in space is bigger between inner layer pipe and the outer layer pipe, flow process is short, under the constant situation of the flow of conduction oil, the flow velocity of conduction oil is less, can not form turbulent flow, be unfavorable for conduction oil and outer layer pipe are heated, the thermal efficiency is low.In the road building machinery technical field, a current technical problem that presses for solution provides the high hot oil heater of a kind of thermal efficiency.

Summary of the invention

Technical problem to be solved in the utility model is to overcome the shortcoming of above-mentioned hot oil heater, and a kind of reasonable in design, simple in structure, heat exchange efficiency is high, result of use is good high-efficiency heat conduction oil heating unit is provided.

Solving the problems of the technologies described above the technical scheme that is adopted is: the inlet at inner layer pipe is outside equipped with burner, the exit is provided with the fume pipe that links with inner layer pipe, smoke inlet section and outlet section outer cover at inner layer pipe are equipped with outer layer pipe, form the space of a closed at both ends between inner layer pipe and the outer layer pipe, link by cross over pipe in two outer layer pipes, the outer layer pipe of inner layer pipe exhanst gas outlet section links by pipeline and conduction oil delivery side of pump, the outer layer pipe of inner layer pipe smoke inlet section links by the inlet of pipeline and heat(ing) coil, the outlet of heat(ing) coil and expansion drum link by being arranged on the maintenance valve on the pipeline and the inlet of Heat-transfer Oil Pump, link by safety-valve and the conduction oil delivery side of pump that is arranged on the pipeline, the space inner layer pipe between inner layer pipe and the outer layer pipe is provided with helical baffle.

The utility model has adopted on the space inner layer pipe between inner layer pipe and the outer layer pipe and has welded helical baffle, helical baffle is separated into a circulation road that spiral sectional area is less with the space between inner layer pipe and the outer layer pipe, when conduction oil flows in this spiral current passage, flow velocity is very fast, has improved the heat exchange efficiency of conduction oil.The utlity model has advantages such as reasonable in design, simple in structure, that heat exchange efficiency is high, result of use is good, can produce at pitch sprinkling car, heated bitumen tanker, synchronous surface dressing machine, asphalt dumping equipment, mulseal on the equipment of transportation such as car and construct pitch and bituminous concrete and promote the use of.

Description of drawings

Fig. 1 is the structural representation of an embodiment of the utility model.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described, but the utility model is not limited to these embodiment.

Embodiment 1

In Fig. 1, the high-efficiency heat conduction oil heating unit of present embodiment is made of inner layer pipe 1, cross over pipe 2, outer layer pipe 3, helical baffle 4, burner 5, heat(ing) coil 6, expansion drum 7, Heat-transfer Oil Pump 8, safety-valve 9, maintenance valve 10, fume pipe 11 connections.

Inner layer pipe 1 is the U-shaped pipeline, and burner 5 is set outside the smoke inlet of inner layer pipe 1, and the flue gas cigarette port of export of inner layer pipe 1 is with the screw threads for fastening connector fume pipe 11 that has been fixedly connected, and links in fume pipe 11 and the inner layer pipe 1.Two straight pipeline position outer cover at inner layer pipe 1 are equipped with outer layer pipe 3, the two ends of outer layer pipe 3 connect with inner layer pipe 1 welding, form the space of a closed at both ends between inner layer pipe 1 and the outer layer pipe 3, link by cross over pipe 2 in two outer layer pipes 3.On the space inner layer pipe 1 between inner layer pipe 1 and the outer layer pipe 3, be welded with helical baffle 4, the pitch of helical baffle 4 should be determined according to space between inner layer pipe 1 and the outer layer pipe 3 and the equipment that is employed, helical baffle 4 is separated into a circulation road that spiral sectional area is less with the space between inner layer pipe 1 and the outer layer pipe 3, flow velocity should be at 2～4 meter per seconds in this spiral current passage for conduction oil, when conduction oil flows in this spiral current passage, flow velocity is very fast, has improved the heat exchange efficiency of conduction oil.The outer layer pipe 3 of inner layer pipe 1 exhanst gas outlet section by the welding thereon pipeline and the inlet of Heat-transfer Oil Pump 8 link, the outer layer pipe 3 of inner layer pipe 1 smoke inlet section by the welding thereon pipeline and the inlet of heat(ing) coil 6 link, flow in the space of heated conduction oil in two outer layer pipes 3, outer water back is heated.The outlet of heat(ing) coil 6 links by the inlet that is installed in maintenance valve 10 and Heat-transfer Oil Pump 8 on the pipeline, expansion drum 7 links by the inlet that is installed in maintenance valve 10 and Heat-transfer Oil Pump 8 on the pipeline, the outlet of heat(ing) coil 6 and expansion drum 7 link, link by the outlet that is arranged on safety-valve 9 and Heat-transfer Oil Pump 8 on the pipeline by the inlet that is installed in maintenance valve 10 and Heat-transfer Oil Pump 8 on the pipeline

Operating principle of the present utility model is as follows:

Connect the power supply of Heat-transfer Oil Pump 8, Heat-transfer Oil Pump 8 runnings, conduction oil flows out from Heat-transfer Oil Pump 8, the outer layer pipe 3 of the outer layer pipe 3 of the inner layer pipe 1 exhanst gas outlet section of flowing through successively, cross over pipe 2, inner layer pipe 1 gas approach section, heat(ing) coil 6, maintenance valve 10 flow back into Heat-transfer Oil Pump 8, and conduction oil circulates.Ignition combustion device 5, high-temperature flue gas enters from inner layer pipe 1 smoke inlet end, flow out from smoke pipe, conduction oil between inner layer pipe 1 and the outer layer pipe 3 is heated, heated conduction oil stream is to outer layer pipe 3 and heat(ing) coil 6 heating, and heated outer layer pipe 3 and cross over pipe 2 and heat(ing) coil 6 carry out interchange of heat with pitch, bituminous concrete, mulseal.Heated conduction oil volume expansion, in 7, the conduction oil volume reduces from heat(ing) coil 6 to expansion drum, and the conduction oils in the expansion drum 7 flow back into Heat-transfer Oil Pump 8 from maintenance valve 10.The effect of safety valve 9 is when Heat-transfer Oil Pump 8 outlet pressures surpass safety valve setting pressure, and conduction oil guarantees the safety of heat-conducting oil heating system through safety valve 9 off-loads.

Claims (1)

1. high-efficiency heat conduction oil heating unit, inlet at inner layer pipe (1) is outside equipped with burner (5), the exit is provided with the fume pipe (11) that links with inner layer pipe (1), smoke inlet section and outlet section outer cover at inner layer pipe (1) are equipped with outer layer pipe (3), form the space of a closed at both ends between inner layer pipe (1) and the outer layer pipe (3), link by cross over pipe (2) in two outer layer pipes (3), the outer layer pipe (3) of inner layer pipe (1) exhanst gas outlet section links by the outlet of pipeline and Heat-transfer Oil Pump (8), the outer layer pipe (3) of inner layer pipe (1) smoke inlet section links by the inlet of pipeline and heat(ing) coil (6), the outlet of heat(ing) coil (6) and expansion drum (7) link by the inlet that is arranged on maintenance valve (10) and Heat-transfer Oil Pump (8) on the pipeline, link by the outlet that is arranged on safety-valve (9) and Heat-transfer Oil Pump (8) on the pipeline, it is characterized in that: the space inner layer pipe (1) between inner layer pipe (1) and the outer layer pipe (3) is provided with helical baffle (4).

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