CN110700057A - Heated air circulation heating system and pavement heating machine - Google Patents
Heated air circulation heating system and pavement heating machine Download PDFInfo
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- CN110700057A CN110700057A CN201910987347.2A CN201910987347A CN110700057A CN 110700057 A CN110700057 A CN 110700057A CN 201910987347 A CN201910987347 A CN 201910987347A CN 110700057 A CN110700057 A CN 110700057A
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- hot air
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- heating
- air circulation
- heating wall
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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
- E01C23/06—Devices or arrangements for working the finished surface; Devices for repairing or reconditioning the surface of damaged paving; Recycling in place or on the road
- E01C23/065—Recycling in place or on the road, i.e. hot or cold reprocessing of paving in situ or on the traffic surface, with or without adding virgin material or lifting of salvaged material; Repairs or resurfacing involving at least partial reprocessing of the existing paving
Abstract
The invention discloses a hot air circulation heating system which comprises two groups of hot air heating walls which are symmetrically arranged, two groups of air equalizing devices which are respectively fixed on the adjacent sides of the two groups of hot air heating walls, and two groups of hot air furnaces, wherein one ends of the two groups of hot air furnaces are respectively communicated with the middle parts of the air equalizing devices on the same side, and the other ends of the two groups of hot air furnaces are connected with burners on the same side; the outer part of the combustor is covered with a heat shield, and the outer part of the heat shield is communicated with a cooling system; the cooling system comprises a cooling pipeline and a cooling fan which are arranged above the hot air heating wall, the cooling fan is fixed on the rack, the bottom of the cooling fan is fixedly provided with a wind distribution box, the top of the wind distribution box is communicated with the cooling fan, and the bottom of the wind distribution box is provided with two groups of cooling pipelines which are respectively communicated with the heat shields on the two sides. The hot air circulation heating system realizes the cyclic utilization of energy, and is environment-friendly, energy-saving and efficient. The invention also discloses a pavement heating machine with the hot air circulation heating system, which can prevent the damage of an electric element caused by overhigh temperature and improve the working condition adaptability of the system.
Description
Technical Field
The invention relates to a heated air circulation heating system and a pavement heating machine, and belongs to the technical field of road maintenance equipment.
Background
The in-situ heating technology is a core technology of in-situ heat regeneration, a rough high-power diesel hot air circulation type heating device on the market at present has the serious problem of uneven heating (horizontal and longitudinal), which is mainly reflected in that the middle temperature is high, the two sides temperature is low, asphalt pavements in speed and temperature concentration areas are easy to scorch and deteriorate, toxic smoke pollutes the environment, high-temperature smoke is easy to leak, vegetation on the periphery of construction is easy to scorch and damage, the reliability of electric elements is high in the special high-temperature environment of in-situ heat regeneration, burners are generally arranged in a staggered mode in the hot air circulation heating device in the prior art and are completely positioned in a heating wall, the structure has the problem that the electric elements are easy to damage at high temperature, the existing in-situ heat regeneration equipment has high requirements on the reliability of the electric elements, 600 ~ 700 ℃ high-temperature hot air is generated when the hot air heating wall in the hot air circulation heating device in the prior art works, the material deformation and damage caused by high-temperature thermal stress release exist, the problem that the sealing connection piece is damaged due to time and labor consumption, the skirt structure in the prior art needs to be replaced regularly.
Disclosure of Invention
The invention aims to overcome the defect that a heated air circulation heating device in the prior art is uneven in heating, and provides a heated air circulation heating system and a pavement heater, wherein the technical scheme is as follows:
the hot air circulation heating system comprises two groups of hot air heating walls which are symmetrically arranged, two groups of air equalizing devices which are respectively fixed at the adjacent sides of the two groups of hot air heating walls, and two groups of hot air furnaces, wherein one ends of the two groups of hot air furnaces are respectively communicated with the middle parts of the air equalizing devices at the same side, and the other ends of the two groups of hot air furnaces are connected with the burners at the same side; the outer part of the combustor is covered with a heat shield, and the outer part of the heat shield is communicated with a cooling system;
the cooling system comprises a cooling pipeline and a cooling fan which are arranged above the hot air heating wall, the cooling fan is fixed on the rack, the bottom of the cooling fan is fixedly provided with a wind distribution box, the top of the wind distribution box is communicated with the cooling fan, and the bottom of the wind distribution box is provided with two groups of cooling pipelines which are respectively communicated with the heat shields on the two sides.
Further, still including fixed setting in the hot-blast device that leaks of preventing of hot-blast heating wall lateral part, the hot-blast device that leaks of preventing includes ceramic fibre skirt limit cloth, the clamp plate of installing from inside to outside in proper order, and hot-blast heating wall lateral part has a plurality of bulge loops, sets up mating holes and the card hole that supplies the bulge loop to pass on ceramic fibre skirt limit cloth and the clamp plate respectively, and first round pin axle is worn to establish in mating holes and the card hole.
Preferably, the first pin is a wedge-shaped pin.
Compared with the prior art, the invention has the following beneficial effects:
the hot air circulation heating system realizes the cyclic utilization of energy, and is environment-friendly, energy-saving and efficient. The hot air circulation heating system overcomes the problem that an electrical element is easy to be damaged at high temperature under the special high-temperature environment of in-situ heat regeneration by introducing the unique heat shield and the cooling pipeline, can prevent the electrical element from being damaged due to overhigh temperature, and improves the working condition adaptability of the system.
Drawings
FIG. 1 is an isometric view of the present invention (with secondary heating wall 12 horizontally secured);
FIG. 2 is an isometric view of the present invention (with secondary heating wall 12 folded and secured);
FIG. 3 is a schematic view of the heat shield attachment of the present invention;
FIG. 4 is an exploded view of the cooling circuit and heat shield of the present invention;
FIG. 5 is an exploded view of the connection of the components of the hot blast heating wall of the present invention;
in the figure: 1-hot air heating wall, 11-main heating wall, 111-first ear plate, 12-auxiliary heating wall 12, 121-second ear plate, 13-convex ring, 14-sliding groove, 15-hot air connecting port, 151-reinforcing rib pipe, 16-connecting piece, 161-cylindrical pin, 162-stop pin, 17-sealing piece, 18-spiral lock buckle, 19-funnel type hot air cover, 191-porous air outlet net surface, 192-guide plate, 193-air return cavity, 2-air equalizing device, 3-hot air furnace, 4-burner, 5-heat insulation cover, 51-fixing cover, 52-moving cover, 53-sliding component, 531-sliding rail, 532-spring pin, 533-roller, 6-cooling system, 61-cooling pipeline, 62-a cooling fan, 621-a wind distribution box, 7-a frame, 8-a hot wind leakage prevention device, 81-ceramic fiber skirt edge cloth, 82-a pressing plate, 821-a clamping hole, 83-a first pin shaft, 9-an air return device and 10-a circulating fan.
Detailed Description
The invention is further described below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example 1
As shown in fig. 1 to 5, the heated air circulation heating system comprises two groups of symmetrically arranged heated air heating walls 1, two groups of air equalizing devices 2 and two groups of hot air furnaces 3, wherein the two groups of air equalizing devices 2 and the two groups of hot air furnaces 3 are respectively fixed at the adjacent sides of the two groups of heated air heating walls 1, one ends of the two groups of hot air furnaces 3 are respectively communicated with the middle parts of the air equalizing devices 2 at the same side, and the other ends of the two groups of hot; a heat shield 5 is covered outside the combustor 4, and the outside of the heat shield 5 is communicated with a cooling system 6;
as shown in fig. 4, the cooling system 6 includes a cooling pipeline 61 and a cooling fan 62 disposed above the hot air heating wall 1, the cooling fan 62 is fixed on the frame 7, a wind distributing box 621 is fixedly disposed at the bottom of the cooling fan 62, the top of the wind distributing box 621 is communicated with the cooling fan 62, and two sets of cooling pipelines 61 respectively communicated with the heat shields 5 at two sides are disposed at the bottom. The air distributing box 621 is connected to the outlet of the cooling fan 62 to uniformly distribute the cool air in the cooling pipelines 61, and the two cooling pipelines 61 are respectively connected to the heat shields 5 of the two groups of hot air heating walls 1. The introduction of the cooling system 6 not only improves the reliability of the electrical components such as the burner 4, but also provides the required low temperature oxygen supply air for the burner 4. Specifically, the tail ends of the two cooling pipelines 61 are respectively connected with the heat shields 5 on the two groups of hot air heating walls 1. As shown in fig. 1 and 2, the air equalizing devices 2 are arranged in bilateral symmetry, and are provided with two air outlets, which are respectively connected with the main heating wall 11 through flanges. The position design of the air equalizing device 2 ensures that the heated air circulation heating system of the invention heats more uniformly.
As shown in fig. 1, in the present embodiment, the hot air leakage preventing device 8 is further included, the hot air leakage preventing device 8 is fixedly disposed on a side portion of the hot air heating wall 1, the hot air leakage preventing device 8 includes a ceramic fiber skirt cloth 81 and a pressing plate 82, which are sequentially installed from inside to outside, the side portion of the hot air heating wall 1 is provided with a plurality of protruding rings 13, a fitting hole (not shown in the figure) and a clamping hole 821, through which the protruding rings 13 pass, are respectively formed on the ceramic fiber skirt cloth 81 and the pressing plate 82, and a first pin 83 is inserted into the fitting hole and the clamping hole 821.
In this embodiment, the first pin 83 is preferably a wedge-shaped pin. The wedge-shaped pin helps to compress the pressure plate 82 and the ceramic fiber skirting cloth 81. The ceramic fiber skirt cloth 81 is wrapped at the lowest part of the peripheral side surface of the hot air heating wall 1, and a pressing plate 82 is installed on the outer side of the ceramic fiber skirt cloth 81 and fixed through a plurality of groups of wedge-shaped pin shafts. The hot wind leakage prevention device is arranged at the bottommost part of the periphery of the hot wind heating wall. The hot wind leakage prevention device 8 is simple in structure and convenient to use; the leakage of high-temperature hot flue gas can be controlled, so that scorching damage to constructed peripheral vegetation is reduced, and the regular maintenance and replacement of the ceramic fiber skirt cloth 81, which is a loss part, are more efficient and convenient.
As shown in fig. 3, in the present embodiment, the heat shield 5 includes a fixed shield 51 and a movable shield 52 slidably connected to the fixed shield 51. Specifically, in the present embodiment, the fixed hood 51 is fixed to the front end portion of the hot blast stove 3, the moving hood 52 is located above the fixed hood 51, and the burner 4 is placed inside the heat shield 5.
In this embodiment, preferably, the movable cover 52 is connected to the fixed cover 51 through a sliding assembly 53, the sliding assembly 53 includes a sliding rail 531, a plurality of sets of spring pins 532 and rollers 533 fixed inside the sliding rail 531, the sliding slot 14 is fixed above the side wall of the fixed cover 51, the sliding rail 531 is sleeved outside the sliding slot 14, and the spring pins 532 and the rollers 533 are embedded inside the sliding slot 14. Preferably, two sets of sliding grooves 14 are symmetrically arranged on the left and right sides of the fixed cover 51, and the sliding grooves 14 are fixed on the top of the fixed cover 51. The movable cover 52 is fixed on the slide rail 531 through a plurality of bolts, and multi-position sliding and fixing are realized under the auxiliary action of the spring pin 532, so that the detection and maintenance of the combustor 4 are facilitated. The present invention incorporates a heat shield 5 to isolate the combustor 4 from the high temperature environment alone, preventing damage due to overheating. Therefore, the technical problem that the electric elements are easily damaged due to high temperature when the in-situ heat regeneration equipment is operated in a special high-temperature environment is solved, and the reliability of the electric elements in the high-temperature environment is guaranteed.
Specifically, in this embodiment, the hot air heating wall 1 includes a main heating wall 11 and two auxiliary heating walls 12 respectively hinged to the left and right sides of the main heating wall 11, and the auxiliary heating walls 12 can be turned over by 180 degrees around the hinge point. The side surface of the auxiliary heating wall body 12 is trapezoidal, so that the space can be saved after the auxiliary heating wall body is folded, the transition transportation is convenient, and the national standard requirements are met. A plurality of groups of reinforcing rib pipes 151 are fixed inside the hot air connecting ports 15 of the auxiliary heating wall 12 and the main heating wall 11. The hot air connection port 15 in this embodiment is trapezoidal.
In this embodiment, the main heating wall 11 and the sub heating wall 12 are preferably detachably fixed by a connecting member 16.
In this embodiment, preferably, the connecting member 16 includes a first ear plate 111, a second ear plate 121, a cylindrical pin 161 and a stop pin 162, which are respectively fixed on the same direction side surfaces of the main heating wall 11 and the auxiliary heating wall 12, and the cylindrical pin 161 and the stop pin 162 are inserted into the first ear plate 111 and the second ear plate 121, and an end of the cylindrical pin 161 is provided with a matching hole for matching with the stop pin 162.
In the present embodiment, the stop pin 162 is preferably a wedge-shaped pin. Cylindric lock 161 and wedge round pin axle combination pin joint can realize quick split owner heating wall body 11 and vice heating wall body 12, raise the efficiency. The working process ensures that the joint surface of the main heating wall and the auxiliary heating wall is tightly attached without air leakage, the sealing performance is good, and the leakage of hot air is reduced
Pavement heating machine, including any one preceding hot air circulation heating system.
As shown in fig. 2, after the main heating wall 11 and the auxiliary heating wall 12 are folded along the hinged position, the main heating wall 11 and the auxiliary heating wall 12 are fastened, fixed and locked through the spiral lock buckle 18, and after the main heating wall 11 and the auxiliary heating wall 12 are locked, the main heating wall 11 and the auxiliary heating wall 12 can be tightly attached without air leakage; when the heated air circulation heating system does not work, the occupied space can be saved, and the heated air circulation heating system is convenient to transport and store.
The upper parts of the trapezoidal connectors of the main heating wall body 11 and the auxiliary heating wall body 12 are provided with sealing grooves for accommodating the sealing elements 17, the sealing elements 17 are fixed in the sealing grooves, the sealing elements 17 are made of ceramic fiber cloth rolled by stainless steel pipes, and the technical problem that the sealing elements 17 are damaged due to material deformation caused by high temperature is solved.
As shown in fig. 5, the side wall of the heating furnace 3 in this embodiment is communicated with an air outlet of a circulating fan 10, the bottom of the circulating fan 10 is fixed to and communicated with the upper surface of the main heating wall, and an air inlet of the circulating fan 10 is connected to an air returning device 9. The bottom of the air return device 9 is communicated with the hot air heating wall 1 and is communicated with an air return cavity 193 of the funnel-shaped hot air cover 19. Under the action of the circulating fan 10, unused hot air around the main heating wall body 11 is pumped into the interlayer of the hot air furnace 3, simultaneously participates in heat exchange with supplemented cold air, is blown into the hot air heating wall 1 again, is uniformly distributed on the porous air outlet net surface 191 through the guide plates 192, and is sprayed out at a high speed to heat the road surface. The air return device 9 and the circulating fan 10 realize the recycling of energy after the bottom redundant hot air is mixed with the external fresh air, and are more energy-saving, environment-friendly and efficient.
The invention adopts the modularized subarea hot air circulation heating technology, and the design of the modularized heating unit, the combined air guide structure of the multi-layer drainage plates and the baffle plates, etc., thereby realizing the accurate control of the modularized subarea heating temperature and ensuring the uniformity of the whole heating surface; and a unique circulating air duct and a hot air leakage prevention device 8 are adopted, so that heat leakage is effectively reduced. The unique hot air generating device, the air equalizing device 2, the funnel-shaped hot air cover 19, the multi-layer guide plate 192, the baffle plate combination and other structures are introduced. The hot air heating wall 1 adopts a bilateral symmetry two-partition design, the main heating wall body 11 is bilaterally symmetrically provided with two hot air modules (namely a cavity formed by the funnel-shaped hot air cover 19 and the porous air outlet net surface 191, and the drainage plate and the baffle plate are arranged in the cavity), the hot air heating wall comprises the funnel-shaped hot air cover 19, a guide plate 192 and the porous air outlet net surface 191, the top of the funnel-shaped hot air cover 19 is communicated with the left outlet and the right outlet of the air equalizing device 2, the bottom of the funnel-shaped hot air cover 19 is connected with the porous air outlet net surface 191 to form a sealed hot air cavity, and the guide plate 192 is positioned in the funnel-shaped hot; the outer periphery of the funnel-shaped hot air cover 19 is provided with a return air cavity 193 which is communicated with the upper return air device 9.
The hot air circulation heating system realizes the cyclic utilization of energy, and is environment-friendly, energy-saving and efficient. The hot air circulation heating system overcomes the problem that an electrical element is easy to be damaged at high temperature under the special high-temperature environment of in-situ heat regeneration by introducing the unique heat shield 5 and the cooling system 6, can prevent the damage of an electrical element caused by overhigh temperature, and improves the working condition adaptability of the system.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.
Claims (10)
1. The hot air circulation heating system is characterized by comprising two groups of hot air heating walls which are symmetrically arranged, two groups of air equalizing devices which are respectively fixed on the adjacent sides of the two groups of hot air heating walls, and two groups of hot air furnaces, wherein one ends of the two groups of hot air furnaces are respectively communicated with the middle parts of the air equalizing devices on the same side, and the other ends of the two groups of hot air furnaces are connected with the burners on the same side; the outer part of the combustor is covered with a heat shield, and the outer part of the heat shield is communicated with a cooling system;
the cooling system comprises a cooling pipeline and a cooling fan which are arranged above the hot air heating wall, the cooling fan is fixed on the rack, a wind distribution box is fixedly arranged at the bottom of the cooling fan, the top of the wind distribution box is communicated with the cooling fan, and the bottom of the wind distribution box is provided with two groups of cooling pipelines which are respectively communicated with the heat insulation covers.
2. The heated air circulation heating system according to claim 1, further comprising a hot air leakage preventing device fixedly arranged on a side portion of the heated air heating wall, wherein the hot air leakage preventing device comprises a ceramic fiber skirt fabric and a pressing plate which are sequentially installed from inside to outside, the side portion of the heated air heating wall is provided with a plurality of convex rings, the ceramic fiber skirt fabric and the pressing plate are respectively provided with a matching hole and a clamping hole for the convex rings to pass through, and a first pin shaft is arranged in the matching hole and the clamping hole in a penetrating manner.
3. The heated air circulation heating system of claim 2, wherein the first pin is a wedge pin.
4. The heated air circulation heating system of claim 1 wherein the heat shield comprises a stationary shield, a moving shield slidably coupled to the stationary shield.
5. The heated air circulation heating system according to claim 4, wherein the moving cover is connected with the fixed cover through a sliding assembly, the sliding assembly comprises a sliding rail, a plurality of groups of spring pins and rollers, the groups of spring pins and the rollers are fixed inside the sliding rail, a sliding groove is fixed above the side wall of the fixed cover, the sliding rail is sleeved outside the sliding groove, and the spring pins and the rollers are embedded inside the sliding groove.
6. The heated air circulation heating system of claim 1, wherein the heated air heating wall comprises a main heating wall and an auxiliary heating wall hinged to the main heating wall, the side surface of the auxiliary heating wall is trapezoidal, and reinforcing rib pipes are fixed inside the hot air connecting ports of the auxiliary heating wall and the main heating wall.
7. The heated air circulation heating system of claim 6, wherein the main heating wall and the sub heating wall are detachably fixed by a connecting member.
8. The heated air circulation heating system of claim 7, wherein the connecting member comprises a first ear plate, a second ear plate, a cylindrical pin and a stop pin, the first ear plate and the second ear plate are respectively fixed on the side surfaces of the main heating wall body and the auxiliary heating wall body in the same direction, the cylindrical pin and the stop pin are arranged in the first ear plate and the second ear plate in a penetrating manner, and a matching hole matched with the stop pin is formed in the end part of the cylindrical pin.
9. The heated air circulation heating system of claim 8, wherein the stop pin is a wedge pin.
10. The pavement heating machine is characterized by comprising the hot air circulation heating system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987347.2A CN110700057A (en) | 2019-10-17 | 2019-10-17 | Heated air circulation heating system and pavement heating machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910987347.2A CN110700057A (en) | 2019-10-17 | 2019-10-17 | Heated air circulation heating system and pavement heating machine |
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| Publication Number | Publication Date |
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| CN110700057A true CN110700057A (en) | 2020-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910987347.2A Pending CN110700057A (en) | 2019-10-17 | 2019-10-17 | Heated air circulation heating system and pavement heating machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501484A (en) * | 2020-04-23 | 2020-08-07 | 江苏集萃道路工程技术与装备研究所有限公司 | Heating device for giving consideration to secondary temperature raising and pavement thermal connection of asphalt mixture |
| CN114990972A (en) * | 2022-06-01 | 2022-09-02 | 江苏集萃道路工程技术与装备研究所有限公司 | Heated air circulation heating device and temperature raising machine |
-
2019
- 2019-10-17 CN CN201910987347.2A patent/CN110700057A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111501484A (en) * | 2020-04-23 | 2020-08-07 | 江苏集萃道路工程技术与装备研究所有限公司 | Heating device for giving consideration to secondary temperature raising and pavement thermal connection of asphalt mixture |
| CN114990972A (en) * | 2022-06-01 | 2022-09-02 | 江苏集萃道路工程技术与装备研究所有限公司 | Heated air circulation heating device and temperature raising machine |
| CN114990972B (en) * | 2022-06-01 | 2023-08-22 | 江苏集萃道路工程技术与装备研究所有限公司 | Heated air circulation heating device and temperature raising machine |
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