CN218893804U - Gas direct-injection heating system and polyester staple fiber partitioned direct-injection heating setting machine - Google Patents
Gas direct-injection heating system and polyester staple fiber partitioned direct-injection heating setting machine Download PDFInfo
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- CN218893804U CN218893804U CN202222824461.3U CN202222824461U CN218893804U CN 218893804 U CN218893804 U CN 218893804U CN 202222824461 U CN202222824461 U CN 202222824461U CN 218893804 U CN218893804 U CN 218893804U
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Abstract
The utility model relates to the field of spinning, in particular to a fuel gas direct-injection heating system and a polyester staple fiber partition type direct-injection heating setting machine. The gas direct injection heating system comprises a heating pipeline, a gas direct injection burner, a uniform air stop block and a uniform air static mixer, wherein one end of the heating pipeline is connected with an air supply outlet, the other end of the heating pipeline is provided with the gas direct injection burner, an air inlet hole is formed in the position of the heating pipeline where the gas direct injection burner is located, the uniform air stop block is arranged at the downstream of the gas direct injection burner in the heating pipeline, and the uniform air static mixer is arranged at the downstream of the uniform air stop block in the heating pipeline. The gas direct injection heating system adopts a gas direct injection mode for heating, the flame heat of natural gas is directly mixed with circulating air, the secondary heat transfer and the waste heat loss are avoided, and the heat utilization rate is greatly improved.
Description
Technical Field
The utility model relates to the field of spinning, in particular to a fuel gas direct-injection heating system and a polyester staple fiber partition type direct-injection heating setting machine.
Background
In the chemical fiber industry, in particular to a post-spinning process in the staple fiber industry, the fibers after post-spinning drafting and crimping are required to be subjected to heat setting in an oven, so that the internal stress of the fibers is eliminated, the dimensional stability of the fibers is improved, and the physical and mechanical properties of the fibers are further improved.
As shown in fig. 1 and fig. 2, the heating oven of the original heat transfer oil heat exchanger currently adopted in the application comprises a box body 20, a chain plate 5, a conveying chain 6, a circulating fan 16 and an air duct 18, wherein the conveying chain 6 is longitudinally arranged in the box body 20, the chain plate 5 is fixedly arranged on the conveying chain 6, an air supply opening 21 and an air return opening 19 are arranged on the box body 20, the air duct 18 is connected with the air supply opening 21 and the air return opening 19, and the circulating fan 16 is arranged on the air duct 18; the box body 20 is provided with a guide plate 2 at the downstream of the return air inlet 19, a porous air homogenizing plate 3 is arranged at the downstream of the guide plate 2, the arrangement direction of the guide plate 2 leads hot air to the porous air homogenizing plate 3, and a heat conduction oil heat exchanger 19 is arranged at the downstream of the porous air homogenizing plate 3; the heat conducting oil heat exchanger 19 is positioned at the upstream of the chain plate 5 of the box body 20; the filter screen 7 is arranged in the cavity of the box body 20, the air supply outlet 21 is arranged at the downstream of the filter screen 7, one side of the air supply outlet 21 is connected with the cavity of the box body 20, and the other side is connected with the circulating fan 16. The heating device of the oven is a heat conduction oil heat exchanger 19, and the principle is that circulating air is guided to the porous air homogenizing plate 3 by the guide plate 2 and then heated by the heat conduction oil heat exchanger 19, namely, the circulating air is uniformly mixed firstly, then the circulating air absorbs heat to become hot air by the heating device, and then the hot air is blown to fibers on the chain plate 5. As shown in fig. 5, the heating oven system of the original heat-conducting oil heat exchanger is divided into a first two areas and a second four areas, wherein each span is four areas, each area is provided with two circulating fans, and each area is provided with four heat-conducting oil heat exchangers; the first two areas are marked as an A1 area and an A2 area, and the second four areas are marked as a B1 area, a B2 area, a B3 area and a B4 area; the oven structure adopted in the areas A1 and A2 is shown in the figure 2, the circulation direction of hot air is that hot air blows from bottom to top, and the lower half part of fibers of the chain plate are heated and dehumidified; the oven structure adopted in the areas B1, B2, B3 and B4 is shown in figure 1, the hot air circulation direction is that hot air blows from top to bottom, and the upper half part of the fibers of the chain plate are heated and dehumidified.
Because the heating device adopted at present is a heat conduction oil heat exchanger, circulating air is heated by utilizing secondary heat transfer of heat conduction oil, natural gas boilers are needed to heat the circulating air by heating the heat conduction oil, when the natural gas boilers operate, heat sprayed by natural gas flames heats the heat conduction oil heat exchanger, and air with waste heat after heating is finally exhausted, and the part cannot be reused and is lost. The natural gas boiler has only 90% of heat efficiency, and the total loss rate reaches 15+% due to the heat loss of the heated heat conducting oil in the flowing pipeline, about 5% of heat loss and the heat transfer efficiency of the two heat exchangers.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a fuel gas direct-injection heating system and a polyester staple fiber partition type direct-injection heating setting machine. According to the utility model, the gas direct injection heating system adopts a gas direct injection mode for heating, the flame heat of natural gas is directly mixed with circulating air, the secondary heat transfer and the waste heat loss are avoided, and the heat utilization rate is greatly improved. In addition, the utility model mixes the generated hot air uniformly by heating the cold air before homogenizing the cold air, thereby ensuring the same air quantity and heat balance.
In order to achieve the above object, the present utility model adopts the following technical scheme:
the gas direct injection heating system comprises a heating pipeline, a gas direct injection burner, a uniform air stop block and a uniform air static mixer, wherein one end of the heating pipeline is connected with an air supply outlet, the other end of the heating pipeline is provided with the gas direct injection burner, an air inlet hole is formed in the position of the heating pipeline where the gas direct injection burner is located, the uniform air stop block is arranged at the downstream of the gas direct injection burner in the heating pipeline, and the uniform air static mixer is arranged at the downstream of the uniform air stop block in the heating pipeline.
Preferably, an inner cylinder and an outer cylinder are arranged on the outer side of the gas direct-injection burner, the inner cylinder is arranged on the outer side of the gas direct-injection burner, the outer cylinder is arranged on the outer side of the inner cylinder, and air inlet holes are uniformly formed in the side walls of the inner cylinder and the outer cylinder.
Preferably, the wind homogenizing baffle block is triangular, is perpendicular to the wind flow direction, and is arranged in a cross manner.
Further, the application provides a polyester staple fiber partitioned direct-injection heating setting machine, which comprises a box body, chain plates, a conveying chain, a circulating fan and an air channel, wherein the conveying chain is longitudinally arranged in the box body, the chain plates are fixedly arranged on the conveying chain, an air supply opening and an air return opening are arranged on the box body, the air channel is connected with the air supply opening and the air return opening, and the circulating fan is arranged on the air channel; the air supply outlet of the box body is connected with the fuel gas direct-injection heating system.
Preferably, a guide plate is arranged at the downstream of the air return opening of the box body, a porous air homogenizing plate is arranged at the downstream of the guide plate, and the arrangement direction of the guide plate leads hot air to the porous air homogenizing plate; a filter screen is arranged at the downstream of the chain plate in the box body.
Preferably, the box body comprises a front two areas and a rear four areas, wherein the air supply outlets of the front two areas are arranged at the upper part of the box body, the air supply outlets of the rear four areas are arranged at the lower part of the box body), and the hot air circulation direction of the front two areas is that hot air blows from bottom to top; the circulation direction of hot air in the rear four areas is that hot air blows from top to bottom.
Preferably, the box body further comprises an explosion door and a water spray pipe, wherein the explosion door is arranged outside the positive pressure area; the positive pressure area is the area from the outlet of the circulating fan to the chain plate; the water spray pipe is arranged above the chain plate.
Preferably, the box body further comprises a temperature sensor and a flame arrester, wherein the temperature sensor is arranged at the outlet of the circulating fan, and the flame arrester is arranged at the joint of the tail end of the heating pipeline and the air supply outlet.
Preferably, the area from the chain plate to the suction port of the circulating fan is a micro negative pressure area.
Preferably, two air supply outlets are arranged in each of the first two areas and the second four areas, and the two air supply outlets are connected with a fuel gas direct-injection heating system through a three-way joint.
The beneficial technical effects of the utility model are that: according to the utility model, the flame heat of the natural gas and the circulating air are directly and fully mixed in a direct heating mode of the natural gas burner, so that the heat can be utilized by 100%, and the total loss rate of the natural gas is greatly reduced. In addition, compared with the traditional heat conducting oil heat exchanger oven, when the same fiber amount is heated, the oven can greatly save the consumption of natural gas.
Drawings
FIG. 1 is a schematic diagram of a four-zone oven after heating of crude heat transfer oil;
FIG. 2 is a schematic diagram of an oven with two areas before heating the original heat transfer oil;
FIG. 3 is a schematic diagram of a rear four zone oven according to the present utility model;
FIG. 4 is a schematic diagram of a first two zone oven according to the present utility model;
FIG. 5 is a schematic diagram of a conventional setting machine;
FIG. 6 is a schematic structural view of a partitioned direct-injection heating setting machine for polyester staple fibers.
Detailed Description
The technical scheme in the embodiment of the utility model is checked and fully described in combination with the embodiment of the utility model, and the utility model is further explained. It will be apparent that the described embodiments are only some, but not all, embodiments of the utility model. Given the embodiments of the present utility model, all other embodiments that would be obvious to one of ordinary skill in the art without making any inventive effort are within the scope of the present utility model.
As shown in FIG. 6, the partitioned direct-injection heating setting machine for the polyester staple fibers is divided into a first two regions (A1 and A2 regions) and a second four regions (B1, B2, B3 and B4 regions), wherein each four spans are divided into one region, one burner is arranged in each region, two circulating fans are arranged in each region, and the burner is divided into two circulating fans after being uniformly ventilated. The structure of the oven in the rear four areas is shown in fig. 3, the circulation direction of hot air is that hot air blows from top to bottom, and the upper half part of fibers of the chain plate are heated and dehumidified; the structure of the oven in the first two areas is shown in fig. 4, the circulation direction of hot air is that hot air blows from bottom to top, and the lower half part of the fibers of the chain plate are heated and dehumidified. The two structural principles are the same, the positions of the fuel gas direct injection heating systems are different, the front two areas (A1 and A2 areas) and the rear four areas (B1, B2, B3 and B4 areas) are both the ovens provided by the utility model, the front two areas are arranged at the upper part of the box body 20, and the rear four areas are arranged at the lower part of the box body 20.
As shown in fig. 3 and 4, the setting machine of the utility model comprises a box 20, a chain plate 5, a conveying chain 6, a circulating fan 16 and an air duct 18, wherein the conveying chain 6 is longitudinally arranged in the box 20, the chain plate 5 is fixedly arranged on the conveying chain 6, an air supply opening 21 and an air return opening 19 are arranged on the box 20, the air duct 18 is connected with the air supply opening 21 and the air return opening 19, and the circulating fan 16 is arranged on the air duct 18; the gas direct-injection heating system is characterized in that a gas direct-injection heating system is arranged in the box 20 at one side of the air supply opening 21, the gas direct-injection heating system comprises a heating pipeline 14, a gas direct-injection burner 11, a uniform wind shielding block 12 and a uniform wind static mixer 13, the heating pipeline 14 is transversely arranged in the box 20, one end of the heating pipeline 14 is connected with the air supply opening 21, the other end of the heating pipeline 14 is provided with the gas direct-injection burner 11, an air inlet hole 8 is formed in the position of the heating pipeline 14 where the gas direct-injection burner 11 is located and is used for communicating the inner cavity of the box 20, a uniform wind stop 12 is arranged at the downstream of the gas direct-injection burner 11 in the heating pipeline 14, and the uniform wind static mixer 13 is arranged at the downstream of the uniform wind stop 12 in the heating pipeline 14.
Wherein, the box body 20 is provided with a deflector 2 at the downstream of the return air inlet 19, a porous air homogenizing plate 3 is arranged at the downstream of the deflector 2, and the arrangement direction of the deflector 2 leads the hot air to the porous air homogenizing plate 3; a filter screen 7 is arranged at the downstream of the inner chain plate 5 of the box body 20. The outer side of the gas direct injection burner 11 is provided with an inner cylinder 10 and an outer cylinder 9, the inner cylinder 10 is arranged on the outer side of the gas direct injection burner 11, the outer cylinder 9 is arranged on the outer side of the inner cylinder 10, and air inlet holes 8 are uniformly formed in the side walls of the inner cylinder 10 and the outer cylinder 9.
The box body of the utility model also comprises an explosion door 1, a water spray pipe 4, a fire arrester 15 and a temperature sensor 17; the explosion door 1 is arranged outside the positive pressure area and is used for preventing accidents caused by overlarge pressure; the water spray pipe 4 is arranged above the chain plate 5 and is used for preventing fiber from igniting and extinguishing fire in an emergency; the fire arrestor 15 is arranged at the joint of the tail end of the heating pipeline 14 and the air supply outlet 21 and is used for filtering residues; the temperature sensor 17 is arranged at the outlet of the circulating fan 16, and controls the natural gas inflow of the combustion fan through temperature feedback to the controller; the positive pressure area is the area from the outlet of the circulating fan 16 to the chain plate 5, and the area from the chain plate 5 to the suction port of the circulating fan 16 is a micro negative pressure area. In the wind homogenizing device, the wind homogenizing baffle blocks 12 are triangular, are perpendicular to the wind flow direction, and are arranged in a staggered manner. The link plate 5 is a perforated plate and is conveyed in one direction by a conveyor chain 6.
According to the data analysis of Table 1, as the oven is directly heated by gas, no secondary heat transfer of heat conduction oil exists, the flame heat of natural gas is directly mixed with circulating air, and the heat is 100% utilized. The original oven heating of each ton of fiber needs 54m on average 3 Now, on average, only 46m is needed after modification 3 Compared with the original natural gas, the natural gas is saved by 20 percent.
TABLE 1
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art. The generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The fuel gas direct injection heating system is characterized by comprising a heating pipeline (14), a fuel gas direct injection burner (11), a uniform air stop block (12) and a uniform air static mixer (13); one end of the heating pipeline (14) is opened, the other end of the heating pipeline is provided with the gas direct-injection burner (11), an air inlet hole (8) is formed in the position where the heating pipeline (14) is located, the air homogenizing stop block (12) is arranged at the downstream of the gas direct-injection burner (11) in the heating pipeline (14), and the air homogenizing static mixer (13) is arranged at the downstream of the air homogenizing stop block (12) in the heating pipeline (14).
2. The direct gas injection heating system according to claim 1, wherein an inner cylinder (10) and an outer cylinder (9) are arranged on the outer side of the direct gas injection burner (11), the inner cylinder (10) is arranged on the outer side of the direct gas injection burner (11), the outer cylinder (9) is arranged on the outer side of the inner cylinder (10), and air inlet holes (8) are uniformly formed in the side walls of the inner cylinder (10) and the outer cylinder (9).
3. The direct gas injection heating system according to claim 1, wherein the wind homogenizing baffle (12) is triangular, perpendicular to the wind flow direction, and arranged in a staggered arrangement.
4. The utility model provides a polyester staple fiber subregion formula direct injection heating forming machine, includes box (20), link joint (5), conveying chain (6), circulating fan (16) and wind channel (18), conveying chain (6) vertically set up in box (20), link joint (5) fixed setting is on conveying chain (6), be provided with supply-air outlet (21) and return air inlet (19) on box (20), wind channel (18) connect supply-air outlet (21) and return air inlet (19), circulating fan (16) set up on wind channel (18); the direct-injection fuel gas heating system is characterized in that an air supply opening (21) of the box body (20) is connected with the direct-injection fuel gas heating system according to any one of claims 1-3.
5. The partitioned direct-injection heating setting machine for polyester staple fibers according to claim 4, wherein a guide plate (2) is arranged at the downstream of the return air inlet (19) of the box body (20), a porous air homogenizing plate (3) is arranged at the downstream of the guide plate (2), and the arrangement direction of the guide plate (2) leads hot air to the porous air homogenizing plate (3); a filter screen (7) is arranged at the downstream of the inner chain plate (5) of the box body (20).
6. The partitioned direct-injection heating setting machine for polyester staple fibers according to claim 4, wherein the box body (20) comprises front two areas (A1 and A2) and rear four areas (B1, B2, B3 and B4), the front two areas of air outlets (21) are arranged at the upper part of the box body (20), the rear four areas of air outlets (21) are arranged at the lower part of the box body (20), and hot air circulation direction in the front two areas is that hot air blows from bottom to top; the circulation direction of hot air in the rear four areas is that hot air blows from top to bottom.
7. The partitioned direct-injection heating setting machine for polyester staple fibers according to claim 4, wherein the box body (20) further comprises an explosion-proof door (1) and a water spray pipe (4), and the explosion-proof door (1) is arranged outside the positive pressure area; wherein the positive pressure area is the area from the outlet of the circulating fan (16) to the chain plate (5); the water spray pipe (4) is arranged above the chain plate (5).
8. The partitioned direct-injection heating setting machine for polyester staple fibers according to claim 4, wherein the box body (20) further comprises a temperature sensor (17) and a flame arrester (15), and the temperature sensor (17) is arranged at an outlet of a circulating fan (16); the fire arrestor (15) is arranged at the joint of the tail end of the heating pipeline (14) and the air supply outlet (21).
9. The partitioned direct-injection heating setting machine for polyester staple fibers according to claim 4, wherein the area from the chain plate (5) to the suction port of the circulating fan (16) is a micro negative pressure area.
10. The partitioned direct-injection heating setting machine for polyester staple fibers according to claim 4, wherein two air supply ports (21) are arranged in each of the front two areas (A1, A2) and the rear four areas (B1, B2, B3 and B4), and the two air supply ports (21) are connected with a fuel gas direct-injection heating system through three-way connectors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222824461.3U CN218893804U (en) | 2022-10-26 | 2022-10-26 | Gas direct-injection heating system and polyester staple fiber partitioned direct-injection heating setting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222824461.3U CN218893804U (en) | 2022-10-26 | 2022-10-26 | Gas direct-injection heating system and polyester staple fiber partitioned direct-injection heating setting machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218893804U true CN218893804U (en) | 2023-04-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222824461.3U Active CN218893804U (en) | 2022-10-26 | 2022-10-26 | Gas direct-injection heating system and polyester staple fiber partitioned direct-injection heating setting machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218893804U (en) |
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2022
- 2022-10-26 CN CN202222824461.3U patent/CN218893804U/en active Active
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