CN110777630A - Novel heating system for heating asphalt pavement - Google Patents
Novel heating system for heating asphalt pavement Download PDFInfo
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- CN110777630A CN110777630A CN201910949209.5A CN201910949209A CN110777630A CN 110777630 A CN110777630 A CN 110777630A CN 201910949209 A CN201910949209 A CN 201910949209A CN 110777630 A CN110777630 A CN 110777630A
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
- E01C23/00—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces
- E01C23/14—Auxiliary devices or arrangements for constructing, repairing, reconditioning, or taking-up road or like surfaces for heating or drying foundation, paving, or materials thereon, e.g. paint
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Abstract
The invention discloses a novel heating system for heating an asphalt pavement, which comprises a Venturi effect, wherein the Venturi effect enables fuel gas to generate negative pressure in a pipeline, air is sucked while the fuel gas is conveyed, the fuel gas is mixed with the air, the problems of independent air distribution and redundant energy consumption are solved, and the fuel gas is combusted more fully. The heating surface of the heating system adopts a curved surface design concept, the heating capacity is guaranteed, the energy consumption is reduced, the heating strength is controlled by adjusting the gas flow rate of the novel heating system, and when the gas flow rate is high, the generated negative pressure is large. In the invention, the structural idea of the existing heating equipment is changed, the Venturi effect is utilized to enable the fuel gas to generate negative pressure in the pipeline, the air is sucked while the fuel gas is conveyed, the fuel gas and the air are mixed, the problems of independent air distribution and redundant energy consumption are solved, and the fuel gas is combusted more fully. The heating surface of the heating system adopts a curved surface design concept, so that the heating capacity is ensured, and the energy consumption is saved.
Description
Technical Field
The invention relates to the field of asphalt pavement heating, in particular to a novel heating system for heating an asphalt pavement.
Background
The heating device has high frequency in the heating field of asphalt pavement or the heating fields of industrial and civil drying, catering, heating, heat treatment, thawing and the like, but the prior heating device has no outstanding energy-saving performance and low heat energy utilization rate, and no heating system with strong comprehensive performance is available on the market and can simultaneously meet the application requirements of each heating field.
Firstly, in the field of asphalt pavement heating, the existing in-situ heat regeneration technology is gradually unable to meet the national environmental protection policy, and the technology of many years ago abroad is still adopted nowadays because the domestic in-situ heat regeneration technology starts late. The heating of asphalt pavement is the first step when the hot in-place regeneration is under construction, the paving quality of the final regenerated asphalt mixture is directly influenced by the level of the heating temperature of asphalt pavement, the breakthrough of the new technology of hot in-place regeneration heating is very slight for years, the existing heating equipment has the problems of insufficient fuel combustion, large fuel consumption, too complicated supporting facilities of the heating equipment and the like, the heating equipment has insufficient heating capacity when in work because only combustible gas is blown in, and air supply equipment is also required to be configured for the heating equipment to enable the gas combustion in the heating equipment, and the air supply equipment is only a simple fan, so that the air supply quantity is easy to be small, the gas combustion is insufficient, when the air supply quantity is large, the heating capacity is insufficient, so the heating temperature is difficult to control when in actual construction, and is not high or low. To this end, we propose a new heating system for asphalt pavement heating.
Disclosure of Invention
The present invention is directed to a novel heating system for heating asphalt pavement to solve the above problems of the background art.
In order to achieve the purpose, the invention provides the following technical scheme: a novel heating system for heating asphalt pavements comprises a Venturi effect, wherein the Venturi effect enables fuel gas to generate negative pressure in a pipeline, air is sucked in while the fuel gas is conveyed, the fuel gas and the air are mixed, the problems of independent air distribution and consumption of redundant energy consumption are solved, and the fuel gas is combusted more fully. Heating system heating surface adopts the curved surface design theory, energy saving consumption when guaranteeing heating capacity, novel heating system is through adjusting gas velocity of flow control heating intensity, when the gas velocity of flow is fast, the negative pressure of production is big, the inhaled air is many, when the gas velocity of flow is slow, the negative pressure of corresponding production is little, inhaled air reduces naturally, the gas can remain the optimum condition throughout with the mixing ratio of air, it is more abundant to make the gas burning, the directness has reduced energy consumption, heating system adopts the curved surface design, increase heating area when not changing heating system external dimension, heating system's curved surface heating is personally submitted "concave mirror" shape, curved surface heating makes the heat to heating system central authorities gathering.
Preferably, the heating system comprises a gas pipe, a gas nozzle, a gas mixing device, a protective cover, a gas storage chamber, a gas filtering combined frame, a fixed seat and a fixing bolt.
Preferably, the whole modular assembly that adopts of heating system piles up the combination in proper order according to the assembly order, becomes novel heating system wholly by eight fixing bolt fastenings at last, dismantles easy maintenance, can change modular unit alone.
Preferably, the gas blows in the gas mixing device through the gas pipe via the gas nozzle, and the enclosed construction of protection casing can effectively block natural wind and influence gas mixing effect, and in the gas storage chamber was sent into to the gas after gas and air mix, through straining gas combination frame and heat release in the burning of novel heating system bottom, the lower floor when adopting quartz glass frame or ordinary fixed frame, its heating temperature can reach 500 ℃ -1000 ℃.
Preferably, the heating surface of the heating system is designed into a curved surface, the highest point of the curved surface is 1-3cm away from the lowest point, the heating area is increased by the design of the curved surface, meanwhile, the heating surface is in a concave mirror shape, heat is concentrated to the center of the heating plate when being dissipated, and the heat at the edge part is not dissipated.
Preferably, the gas mixing device is an important part on a novel heating system, the gas nozzle is fixed on the fixing frame through threads through the fixing frame, the position of the nozzle is adjusted through rotating the nozzle threads, the position of the nozzle is fixed through a fixing nut, the nozzles with different apertures are selected according to the size of the novel heating system, the distance between the nozzle and the front end of the mixing device is 0-8mm, the gas is sprayed into the gas mixing device through the gas nozzle, the front end of the gas mixing device is provided with two symmetrical air inlets, air is mixed with the gas in the suction device through the air inlets, the tail end is connected with a curved surface pipe, and mixed gas can not generate vortex in a pipeline when passing through.
Preferably, when the novel heating system provides different heating capacities, the injection angle, the inner diameter of the gas injection hole and the inner diameter of the nozzle cavity of the gas nozzle are different, the range of the inner diameter of the gas injection hole is 0.3-1mm, the inner diameter of the nozzle cavity is 5-10 times of the inner diameter of the gas injection hole, and the injection angle is 60-120 degrees.
Preferably, the pipe diameter of the front end of the gas mixing device is gradually reduced from thick to thin, the tail end of the gas mixing device is gradually reduced from thin to thick, when gas is blown into the front end of the device, the flow cross section is reduced, the Venturi effect is generated, the flow speed of the gas is increased, the flow speed is increased according to the Bernoulli law, the fluid pressure is reduced along with the increase of the flow speed, namely, low pressure is generated near the tail end of the gas, the adsorption effect is generated, and air enters the gas mixing device from a symmetrical air inlet hole arranged on the device by utilizing the.
Preferably, the gas is mixed with air through the gas mixing device and is blown into the gas storage chamber through the curved surface pipe, a gas distributor is arranged below the connection of the gas storage chamber and the curved surface pipe, the periphery of the gas distributor is in a porous design, a curved surface spoiler is arranged at the bottom of the gas distributor, and when the mixed gas is blown downwards, the mixed gas is uniformly dispersed in the gas storage chamber under the action of the gas distributor.
Compared with the prior art, the invention has the beneficial effects that:
(1) the system changes the structural idea of the existing heating equipment, utilizes the Venturi effect to enable the gas to generate negative pressure in the pipeline, sucks air while conveying the gas, enables the gas to be mixed with the air, solves the problems of independent air distribution and consumption of redundant energy consumption, and enables the gas to be more fully combusted. The heating surface of the heating system adopts a curved surface design concept, so that the heating capacity is ensured, and the energy consumption is saved.
(2) This system, heating system adopt the curved surface design, increase the heating area when not changing heating system external dimension, and heating system's curved surface heating is personally submitted "concave mirror" shape, and the curved surface heating makes the heat to the central gathering of heating system, has reduced the thermal directness of limit portion like this and has lost, improves heat utilization ratio under the condition that does not increase fuel consumption, promotes the heating effect, the consumption of energy saving.
(3) According to the system, the flow velocity is increased along with the reduction of the gas pressure, namely low pressure is generated near the gas flowing at high speed, so that an adsorption effect is generated, and air is sucked into the gas mixing device through the vent holes on the gas mixing device, so that the aim of mixing the gas and the air is fulfilled; the terminal internal diameter of mist gets into device becomes thick gradually, makes the mist velocity of flow reduce, gets into the inside gas receiver of novel heating system through the curved surface pipeline, is equipped with the gas distributor in the novel heating system gas receiver, makes mist evenly distribute in novel heating system, and final mist sees through the gas filtering combination frame of novel heating system below, at novel heating system bottom homogeneous combustion, produces infrared heating.
(4) The system, under the condition that does not change external dimension, in order to reach the maximize of heating area, novel heating system designs the heating surface as the curved surface, and the curved surface peak vertical distance minimum is 1-3cm, and the design increase heating area of curved surface, simultaneously, the heating is personally submitted "concave mirror" shape, and the heat is concentrated to hot plate central authorities when giving off, and limit portion heat is not lost and disappears, makes the heat utilization more abundant when not increasing energy consumption, the consumption of energy saving.
Drawings
FIG. 1 is a schematic view of the novel heating system of the present invention installed in a heater;
FIG. 2 is a cross-sectional view of the interior of the gas mixing apparatus of the present invention;
FIG. 3 is a schematic view of the gas flow direction of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a novel heating system for heating asphalt pavements comprises a Venturi effect, wherein the Venturi effect enables fuel gas to generate negative pressure in a pipeline, air is sucked in while the fuel gas is conveyed, the fuel gas and the air are mixed, the problems of independent air distribution and consumption of redundant energy consumption are solved, and the fuel gas is combusted more fully. Heating system heating surface adopts the curved surface design theory, energy saving consumption when guaranteeing heating capacity, novel heating system is through adjusting gas velocity of flow control heating intensity, when the gas velocity of flow is fast, the negative pressure of production is big, the inhaled air is many, when the gas velocity of flow is slow, the negative pressure of corresponding production is little, inhaled air reduces naturally, the gas can remain the optimum condition throughout with the mixing ratio of air, it is more abundant to make the gas burning, the directness has reduced energy consumption, heating system adopts the curved surface design, increase heating area when not changing heating system external dimension, heating system's curved surface heating is personally submitted "concave mirror" shape, curved surface heating makes the heat to heating system central authorities gathering.
Heating system comprises gas pipe, gas nozzle, gas mixing device, safety cover, reservoir, strain gas built-up frame, fixing base and fixing bolt, heating system wholly adopts the modularization assembly, piles up the combination in proper order according to the assembly order, and it is whole to become novel heating system by eight fixing bolt fastenings at last, dismantles easy maintenance, can change modular unit alone.
The gas blows in the gas mixing device through the gas pipe via the gas nozzle, the closed structure of the protective cover can effectively prevent natural wind from influencing the gas mixing effect, the gas is mixed with air and then sent into the gas storage chamber, the gas is combusted and released at the bottom of the novel heating system through the gas filtering combined frame, and the heating temperature of the lowest layer can reach 500-1000 ℃ when a quartz glass frame or a common fixed frame is adopted.
The heating system is characterized in that the heating surface is designed into a curved surface, the highest point of the curved surface is 1-3cm away from the lowest point, the heating area is increased by the design of the curved surface, meanwhile, the heating surface is in a concave mirror shape, heat is concentrated to the center of the heating plate when being dissipated, and the heat at the edge part is not dissipated.
The gas mixing device is an important part on a novel heating system, a gas nozzle is fixed on a fixing frame through threads through the fixing frame, the position of the nozzle is adjusted through rotating the threads of the nozzle, the position of the nozzle is fixed through a fixing nut, the nozzle with different apertures is selected according to the size of the novel heating system, the distance between the nozzle and the front end of the mixing device is 0-8mm, the gas is sprayed into the gas mixing device through the gas nozzle, the front end of the gas mixing device is provided with two symmetrical gas inlet holes, air is mixed with the gas in a suction device through the gas inlet holes, the tail end of the gas mixing device is connected with a curved surface pipe, and mixed gas can not generate vortex.
According to the internal section view of the gas nozzle, when the novel heating system provides different heating capacities, the injection angle, the inner diameter of the gas injection hole and the inner diameter of the nozzle cavity are different, the range of the inner diameter of the gas injection hole is 0.3-1mm, the inner diameter of the nozzle cavity is 5-10 times of the inner diameter of the gas injection hole, and the injection angle is 60-120 degrees.
The pipe diameter of the front end of the gas mixing device is reduced from thick to thin gradually, the tail end of the gas mixing device is reduced from thin to thick gradually, when gas is blown into the front end of the device, due to the fact that the flow cross section is reduced, the Venturi effect is generated, the flow velocity of the gas is increased, the flow velocity is increased according to the Bernoulli law, along with the reduction of fluid pressure, namely low pressure can be generated near the tail end of the gas, the adsorption effect is generated, and air enters the gas mixing device from a symmetrical air inlet hole formed in the device by utilizing the.
The gas passes through gas mixing device and air mixing, blows in the gas receiver via the curved surface pipe in, in the below of gas receiver and curved surface union coupling, is provided with gas distributor, and gas distributor adopts porous design all around, and the bottom is the curved surface spoiler, and when gas mixture blows down, under gas distributor's effect, gas mixture is even in the gas receiver dispersion. The structure idea of the existing heating equipment is changed, the Venturi effect is utilized, the fuel gas generates negative pressure in the pipeline, the air is sucked while the fuel gas is conveyed, the fuel gas and the air are mixed, the problems of independent air distribution and redundant energy consumption are solved, and the fuel gas is combusted more fully. The heating surface of the heating system adopts a curved surface design concept, so that the heating capacity is ensured, and the energy consumption is saved.
The heating system adopts the curved surface design, increases the heating area when not changing heating system overall dimension, and heating system's curved surface heating is personally submitted "concave mirror" shape, and the curved surface heating makes the heat to the central gathering of heating system, has reduced the thermal directness of limit portion like this and has lost, improves heat utilization ratio under the condition that does not increase fuel consumption, promotes the heating effect, the consumption of energy saving.
The increase of the flow velocity is accompanied with the reduction of the gas pressure, namely low pressure is generated near the gas flowing at high speed, so as to generate adsorption effect, and air is sucked into the gas mixing device through the vent holes on the gas mixing device, thereby achieving the purpose of mixing the gas and the air; the terminal internal diameter of mist gets into device becomes thick gradually, makes the mist velocity of flow reduce, gets into the inside gas receiver of novel heating system through the curved surface pipeline, is equipped with the gas distributor in the novel heating system gas receiver, makes mist evenly distribute in novel heating system, and final mist sees through the gas filtering combination frame of novel heating system below, at novel heating system bottom homogeneous combustion, produces infrared heating.
Under the condition of not changing the appearance size, in order to reach the maximization of heating area, novel heating system designs the heating surface as the curved surface, and the curved surface peak vertical distance minimum is 1-3cm, and the design of curved surface increases heating area, and simultaneously, the heating is personally submitted "concave mirror" shape, and the heat is concentrated to hot plate central authorities when giving off, and limit portion heat does not scatter and disappear, makes the heat utilization more abundant when not increasing energy consumption, the consumption of energy saving.
The working principle is as follows: the gas gets into the gas pipeline through the relief valve in the fuel tank, and heating power as required adjusts gas pressure, blows in the gas mixing device with the gas via the gas nozzle in, and the gas mixing device internal diameter gradually changes, and the gas is because gas mixing device anterior segment internal diameter tapering, and the gas is when overflowing the section through reducing, and the phenomenon that the velocity of flow increases appears in the gas. The increase of the flow velocity is accompanied with the reduction of the gas pressure, namely low pressure is generated near the gas flowing at high speed to generate adsorption effect, so that the air is sucked into the gas mixing device through the vent holes on the gas mixing device, thereby achieving the purpose of mixing the gas and the air; the terminal internal diameter of mist gets into device becomes thick gradually, makes the mist velocity of flow reduce, gets into the inside gas receiver of novel heating system through the curved surface pipeline, is equipped with the gas distributor in the novel heating system gas receiver, makes mist evenly distribute in novel heating system, and final mist sees through the gas filtering combination frame of novel heating system below, at novel heating system bottom homogeneous combustion, produces infrared heating.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one of the elements does not exclude the presence of other like elements in the process, method, article, or apparatus that comprises the element.
The related modules involved in the system are all hardware system modules or functional modules combining computer software programs or protocols with hardware in the prior art, and the computer software programs or the protocols involved in the functional modules are all known in the technology of persons skilled in the art, and are not improvements of the system; the improvement of the system is the interaction relation or the connection relation among all the modules, namely the integral structure of the system is improved, so as to solve the corresponding technical problems to be solved by the system.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A novel heating system for asphalt pavement heating comprises a Venturi effect, and is characterized in that: the Venturi effect enables the fuel gas to generate negative pressure in the pipeline, air is sucked in while the fuel gas is conveyed, the fuel gas is mixed with the air, the problems of independent air distribution and redundant energy consumption are solved, the fuel gas is more fully combusted, the heating surface of the heating system adopts a curved surface design concept, the heating capacity is guaranteed, and meanwhile, the energy consumption is saved;
novel heating system is through adjusting gas velocity of flow control heating intensity, when the gas velocity of flow is fast, the negative pressure of production is big, the inhaled air is many, when the gas velocity of flow is slow, the negative pressure of corresponding production is little, inhaled air reduces naturally, the gas can remain the optimum state with the mixed proportion of air throughout, it is more abundant to make the gas burning, the direct energy resource consumption that has reduced, heating system adopts the curved surface design, increase heating area when not changing heating system external dimension, heating system's curved surface heating is personally submitted "concave mirror" shape, the curved surface heating makes the heat to the central authorities of heating system gather.
2. The new heating system for asphalt pavement heating according to claim 1, characterized in that: the heating system is composed of a gas pipe, a gas nozzle, a gas mixing device, a protective cover, a gas storage chamber, a gas filtering combined frame, a fixed seat and a fixing bolt.
3. The new heating system for asphalt pavement heating according to claim 1, characterized in that: the whole modular assembly that adopts of heating system piles up the combination in proper order according to the assembly order, becomes novel heating system wholly by eight fixing bolt fastenings at last, dismantles easy maintenance, can change modular unit alone.
4. The new heating system for asphalt pavement heating according to claim 1, characterized in that: the gas blows in the gas mixing device through the gas pipe via the gas nozzle, the closed structure of the protective cover can effectively prevent natural wind from influencing the gas mixing effect, the gas is mixed with air and then sent into the gas storage chamber, the gas is combusted and released at the bottom of the novel heating system through the gas filtering combined frame, and the heating temperature of the lowest layer can reach 500-1000 ℃ when a quartz glass frame or a common fixed frame is adopted.
5. The new heating system for asphalt pavement heating according to claim 1, characterized in that: the heating system is characterized in that the heating surface is designed into a curved surface, the highest point of the curved surface is 1-3cm away from the lowest point, the heating area is increased by the design of the curved surface, meanwhile, the heating surface is in a concave mirror shape, heat is concentrated to the center of the heating plate when being dissipated, and the heat at the edge part is not dissipated.
6. The new heating system for asphalt pavement heating according to claim 1, characterized in that: the gas mixing device is an important part on a novel heating system, a gas nozzle is fixed on a fixing frame through threads through the fixing frame, the position of the nozzle is adjusted through rotating the threads of the nozzle, the position of the nozzle is fixed through a fixing nut, the nozzle with different apertures is selected according to the size of the novel heating system, the distance between the nozzle and the front end of the mixing device is 0-8mm, the gas is sprayed into the gas mixing device through the gas nozzle, the front end of the gas mixing device is provided with two symmetrical gas inlet holes, air is mixed with the gas in a suction device through the gas inlet holes, the tail end of the gas mixing device is connected with a curved surface pipe, and mixed gas can not generate vortex.
7. The new heating system for asphalt pavement heating according to claim 1, characterized in that: according to the internal section view of the gas nozzle, when the novel heating system provides different heating capacities, the injection angle, the inner diameter of the gas injection hole and the inner diameter of the nozzle cavity are different, the range of the inner diameter of the gas injection hole is 0.3-1mm, the inner diameter of the nozzle cavity is 5-10 times of the inner diameter of the gas injection hole, and the injection angle is 60-120 degrees.
8. The new heating system for asphalt pavement heating according to claim 1, characterized in that: the pipe diameter of the front end of the gas mixing device is reduced from thick to thin gradually, the tail end of the gas mixing device is reduced from thin to thick gradually, when gas is blown into the front end of the device, due to the fact that the flow cross section is reduced, the Venturi effect is generated, the flow velocity of the gas is increased, the flow velocity is increased according to the Bernoulli law, along with the reduction of fluid pressure, namely low pressure can be generated near the tail end of the gas, the adsorption effect is generated, and air enters the gas mixing device from a symmetrical air inlet hole formed in the device by utilizing the.
9. The new heating system for asphalt pavement heating according to claim 1, characterized in that: the gas passes through gas mixing device and air mixing, blows in the gas receiver via the curved surface pipe in, in the below of gas receiver and curved surface union coupling, is provided with gas distributor, and gas distributor adopts porous design all around, and the bottom is the curved surface spoiler, and when gas mixture blows down, under gas distributor's effect, gas mixture is even in the gas receiver dispersion.
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| CN201910949209.5A CN110777630A (en) | 2019-10-08 | 2019-10-08 | Novel heating system for heating asphalt pavement |
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| CN201910949209.5A CN110777630A (en) | 2019-10-08 | 2019-10-08 | Novel heating system for heating asphalt pavement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113993267A (en) * | 2021-11-04 | 2022-01-28 | 中国科学技术大学 | Portable hybrid discharge cold atmosphere plasma jet device |
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Application publication date: 20200211 |