阅读说明：本技术 一种高效换热管生产方法及设备 (Production method and equipment of efficient heat exchange tube ) 是由 张望成 李强 孙清洁 黄聪 鲁蓉蓉 曾宪山 于 2021-08-24 设计创作，主要内容包括：本发明公开了一种高效换热管生产方法及设备,本发明之一种高效换热管生产方法,采用先用花纹轧辊轧制形成U形槽,然后再用镦型轧辊机构将U形槽压成开口两侧内凹形成开口窄,内部宽的凹槽结构并且通过间断辊轧的方法,形成轧制区和未轧制区,从而使得管材中部为有花纹的轧制区,两端为光滑的未轧制区,便于两端胀接,防止胀接不紧。本发明实现了换热管上凹槽的开口两侧内凹形成开口窄,内部宽的凹槽结构的轧制和可间断轧制的连续化生产,降低了生产成本,提高了生产效率。(The invention discloses a method and a device for producing a high-efficiency heat exchange tube. The invention realizes the rolling of the groove structure with narrow opening and wide inside and the continuous production of discontinuous rolling, which are formed by the inward concave of the two sides of the opening of the groove on the heat exchange tube, reduces the production cost and improves the production efficiency.)

1. A production method of a high-efficiency heat exchange tube is characterized by comprising the following steps:

step one, placing a strip on high-efficiency heat exchange tube production equipment; the efficient heat exchange tube production equipment is sequentially provided with a patterned roller mechanism (1) and an upsetting roller mechanism (2) along the traveling direction of a strip; the pattern roller mechanism (1) comprises a pattern roller (11) and a first smooth surface roller (12); the upsetting roller mechanism (2) comprises a smooth upsetting roller (21) and a second smooth roller (22); the pattern roller (11) is connected with a first lifting mechanism, and the upsetting roller mechanism (2) is connected with a second lifting mechanism;

step two, the first lifting mechanism drives the pattern roller (11) to descend, the strip is rolled into a groove by the pattern roller (11), a rolling area is formed when the pattern roller (11) rolls for every A mm, then the first lifting mechanism drives the pattern roller (11) to ascend, the strip moves for B mm to form an unrolled area, and the first lifting mechanism circularly ascends and descends to form the rolling area and the unrolled area;

step three, when the rolling area passes through the smooth surface upsetting roller (21), the second lifting mechanism drives the smooth surface upsetting roller (21) to descend, the rolling area is upset by the smooth surface upsetting roller (21), so that two sides of an opening of a groove are concave inwards to form a groove structure with a narrow opening and a wide inner part, and when the non-rolling area passes through the smooth surface upsetting roller (21), the second lifting mechanism drives the smooth surface upsetting roller (21) to ascend; the second lifting mechanism circularly lifts and presses the rolling area;

and step four, step two and step three are circularly carried out to prepare the strip materials which are arranged at intervals between the rolling area and the non-rolling area, and the groove on the rolling area forms a groove structure with a narrow opening and a wide inner part.

2. The production method of the high-efficiency heat exchange tube according to claim 1, wherein the first lifting mechanism and the second lifting mechanism are of the same structure, the sliding block (31) can slide vertically, the sliding block (31) is connected with a lifting device (32), a displacement sensor (33) is installed by matching with the lifting device (32), and the sliding block (31) is coupled with a roller installation shaft (35) through a bearing (34).

3. A method for producing a high efficiency heat exchange tube as recited in claim 2, wherein said sliding block (31) is slidably mounted on a slidable frame (36).

4. A method for producing a high efficiency heat exchange tube as claimed in claim 2, wherein said elevating means (32) is a cylinder, an oil cylinder or a screw mechanism.

5. The production method of the high-efficiency heat exchange tube as claimed in claim 1 or 2, wherein the high-efficiency heat exchange tube has an outer diameter of 9.52-50.8 mm and a wall thickness of 0.4-2.0 mm.

6. The method for producing the high-efficiency heat exchange tube according to claim 1 or 2, wherein the front end of the high-efficiency heat exchange tube production equipment is provided with an uncoiler, and the rear end of the high-efficiency heat exchange tube production equipment is provided with a guide structure cold roll forming unit, a welding unit, a sizing unit, an online heat treatment furnace, a nondestructive testing and sizing cutting unit in sequence.

7. A method for producing a high efficiency heat exchange tube as claimed in claim 1 or 2, wherein the strip comprises stainless steel strip, titanium alloy strip, aluminum alloy strip, copper strip and copper alloy strip.

8. The production equipment of the high-efficiency heat exchange tube comprises a rack and is characterized in that a pattern roller mechanism (1) and an upsetting roller mechanism (2) are sequentially arranged on the rack along the traveling direction of a strip; the pattern roller mechanism (1) comprises a pattern roller (11) and a first smooth surface roller (12); the upsetting roller mechanism (2) comprises a smooth upsetting roller (21) and a second smooth roller (22); the pattern roller (11) is connected with a first lifting mechanism, and the upsetting roller mechanism (2) is connected with a second lifting mechanism.

9. The high-efficiency heat exchange tube production equipment as claimed in claim 8, wherein the first lifting mechanism and the second lifting mechanism are of the same structure, a sliding block (31) capable of sliding vertically is arranged, the sliding block (31) is connected with a lifting device (32), a displacement sensor (33) is arranged by matching with the lifting device (32), and the sliding block (31) is axially connected with a roller mounting shaft (35) through a bearing (34).

10. A high efficiency heat exchange tube production plant as recited in claim 9, characterized in that said slider (31) is slidably mounted on a slidable frame (36); the lifting device (32) is a cylinder, an oil cylinder or a screw rod mechanism.

Technical Field

The invention belongs to the field of heat exchange tubes, and particularly relates to a production method and equipment of an efficient heat exchange tube.

Background

Compared with a smooth pipe, the high-efficiency heat exchange pipe has higher heat exchange coefficient, so that the high-efficiency heat exchange pipe has huge application prospect in the fields of air cooling, seawater desalination, chemical engineering and the like with high heat exchange requirements.

In order to increase the heat exchange efficiency, a high-efficiency heat exchange tube is developed as shown in fig. 1, wherein a C-shaped groove is formed on the surface of the high-efficiency heat exchange tube, so that the volume of the steam bubble can be controlled due to the fact that the opening width of the tooth groove is smaller than the width of the bottom of the high-efficiency heat exchange tube while the surface area of the high-efficiency heat exchange tube is increased, a continuous bubble column can be formed, and the heat exchange efficiency can be further improved.

However, since the opening of the high-efficiency heat exchange tube is smaller than the width of the bottom, the common method is to use die casting, which results in low production efficiency.

In addition, the existing high-efficiency heat exchange tube manufacturing procedure is as follows: firstly, preparing a pipe, and then carrying out off-line rolling; and transferring the prepared plain tube to a rolling production line to prepare the high-efficiency heat exchange tube. This results in a complicated production process of the high-efficiency heat exchange tube and low production efficiency.

And thirdly, the grooves are fully filled on the surface of the continuously rolled strip, so that the problem that expansion joint is not tight due to the existence of the grooves at the tube ends in the expansion joint process of the prepared heat exchange tube and the tube plate or the expansion joint of the tube expander is easily damaged by the grooves is solved, and the production cost is increased.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the defects in the prior art and provide a production method and equipment of a high-efficiency heat exchange tube. The invention realizes the rolling of the groove structure with narrow opening and wide inside and the continuous production of discontinuous rolling, which are formed by the inward concave of the two sides of the opening of the groove on the heat exchange tube, reduces the production cost and improves the production efficiency.

The technical scheme adopted by the invention for solving the technical problems is as follows:

the invention relates to a production method of a high-efficiency heat exchange tube, which comprises the following steps:

step one, placing a strip on high-efficiency heat exchange tube production equipment; the efficient heat exchange tube production equipment is sequentially provided with a patterned roller mechanism 1 and an upsetting roller mechanism 2 along the traveling direction of a strip; the pattern roller mechanism 1 comprises a pattern roller 11 and a first smooth roller 12; the upsetting roller mechanism 2 comprises a smooth upsetting roller 21 and a second smooth roller 22; the pattern roller 11 is connected with a first lifting mechanism, and the upsetting roller mechanism 2 is connected with a second lifting mechanism;

step two, the first lifting mechanism drives the patterned roller 11 to descend, the strip is rolled into a groove by the patterned roller 11, a rolling area is formed when the patterned roller 11 rolls for every A mm, then the first lifting mechanism drives the patterned roller 11 to ascend, the strip moves for B mm to form an unrolled area, and the first lifting mechanism circularly ascends and descends to form the rolling area and the unrolled area;

step three, when the rolling area passes through the smooth surface upsetting roller 21, the second lifting mechanism drives the smooth surface upsetting roller 21 to descend, the rolling area is upset by the smooth surface upsetting roller 21, two sides of an opening of a groove are concave inwards to form a groove structure with a narrow opening and a wide inner part, and when the non-rolling area passes through the smooth surface upsetting roller 21, the second lifting mechanism drives the driving surface upsetting roller 21 to ascend; the second lifting mechanism circularly lifts and presses the rolling area;

and step four, step two and step three are circularly carried out to prepare the strip materials which are arranged at intervals between the rolling area and the non-rolling area, and the groove on the rolling area forms a groove structure with a narrow opening and a wide inner part.

In a further improvement, the first lifting mechanism and the second lifting mechanism have the same structure, a sliding block 31 capable of vertically sliding is connected with a lifting device 32, a displacement sensor 33 is installed by matching with the lifting device 32, and the sliding block 31 is coupled with a roller installation shaft 35 through a bearing 34.

In a further improvement, the slider 31 is slidably mounted on a slidable frame 36.

In a further improvement, the lifting device 32 is a cylinder, an oil cylinder or a screw rod mechanism.

The further improvement is that the outer diameter of the high-efficiency heat exchange tube is 9.52-50.8 mm, and the wall thickness range is 0.4-2.0 mm.

The front end of the high-efficiency heat exchange tube production equipment is provided with an uncoiler, and the rear end of the uncoiler is sequentially provided with a guide structure cold bending forming unit, a welding unit, a sizing unit, an online heat treatment furnace, a nondestructive inspection and fixed-length cutting unit. The high-efficiency heat exchange tube production equipment comprises a cold roll forming unit, a sizing unit, a heat treatment furnace, a heat exchange tube, a pipe plate, a heat exchange tube and a pipe plate, wherein the cold roll forming unit is arranged on the cold roll forming unit, the sizing unit is used for sizing, the heat exchange tube is arranged on the cold roll forming unit.

In a further refinement, the strip comprises a stainless steel strip, a titanium alloy strip, an aluminum alloy strip, a copper strip, and a copper alloy strip.

The invention relates to high-efficiency heat exchange tube production equipment which comprises a rack, wherein a pattern roller mechanism 1 and an upsetting roller mechanism 2 are sequentially arranged on the rack along the traveling direction of a strip; the pattern roller mechanism 1 comprises a pattern roller 11 and a first smooth roller 12; the upsetting roller mechanism 2 comprises a smooth upsetting roller 21 and a second smooth roller 22; the pattern roller 11 is connected with a first lifting mechanism, and the upsetting roller mechanism 2 is connected with a second lifting mechanism.

In a further improvement, the first lifting mechanism and the second lifting mechanism have the same structure, a sliding block 31 capable of vertically sliding is connected with a lifting device 32, a displacement sensor 33 is installed by matching with the lifting device 32, and the sliding block 31 is coupled with a roller installation shaft 35 through a bearing 34.

In a further improvement, the sliding block 31 is slidably mounted on a slidable rack 36; the lifting device 32 is a cylinder, oil cylinder or screw rod mechanism.

Compared with the prior art, the invention has the following beneficial effects:

1. the invention adopts the method that the U-shaped groove is formed by rolling the figure roller, and then the U-shaped groove is pressed into the groove structure with the two sides of the opening concave inwards to form the groove structure with the narrow opening and the wide inside by the upsetting roller mechanism, thereby providing the manufacturing method of the high-efficiency heat exchange tube, improving the production efficiency and reducing the cost.

2. The invention forms a rolling area and a non-rolling area by a discontinuous rolling method, thereby leading the middle part of the heat exchange tube to be a patterned rolling area, leading the two ends to be smooth non-rolling areas, being convenient for expanding connection between the two ends and the tube plate and preventing the expanding connection from being not tight.

3. The invention can realize the automatic continuous production of the high-efficiency heat exchange tube; simultaneously, the decorative pattern form of high-efficient heat exchange tube is adjustable, and the decorative pattern degree of depth can be controlled through elevating gear, can produce the high-efficient heat exchange tube of different heat exchange efficiency to satisfy the high-efficient heat exchange tube demand of different heat transfer operating modes, showing the manufacturing cost who reduces high-efficient heat exchange tube simultaneously, promote its using widely in a plurality of fields such as air cooling, sea water desalination and chemical industry.

4. The invention discloses automatic production equipment for realizing the functions.

Drawings

FIG. 1 is a schematic structural diagram of a groove structure with a narrow opening and a wide interior.

FIG. 2 is a schematic view of the structure of the patterned roller mechanism;

FIG. 3 is a schematic structural view of an upsetting roller mechanism;

fig. 4 is a structural schematic diagram of a heat exchange tube with external patterns.

Detailed Description

The invention is further explained with reference to the drawings and the embodiments.

Example 1

Referring to the attached figures 1-3, a pattern roller and a smooth heading roller are respectively arranged on a slidable shaft, the smooth roller is arranged on a fixed shaft, under the production process, a strip with the width of 29.7mm and the thickness of 0.5mm is rolled, and a C-shaped inner pattern efficient heat exchange tube with the tooth height of 0.15mm and the inner pattern number of 40 heads/inch is manufactured at the production speed of 3m/min by controlling the rotating speed of an embossing and forming driving motor. By implementing the process method, the production cost of the high-efficiency heat exchange tube with the inner patterns is reduced by 2 ten thousand yuan/ton, and the production efficiency is improved by 20 percent.

Example 2

A figure roller and a smooth heading roller are respectively arranged on a slidable shaft, the smooth roller is arranged on a fixed shaft, a strip with the width of 48.8mm and the thickness of 0.9mm is rolled under the production process, and the C-shaped internal figure high-efficiency heat exchange tube with the tooth height of 0.2mm and the thread number of 45 heads/inch is manufactured at the production speed of 2.5m/min by controlling the rotation speed of an embossing and forming driving motor. By implementing the process method, the production cost of the crossed-tooth inner-pattern efficient heat exchange tube is reduced by 2.3 ten thousand yuan/ton, and the production efficiency is improved by 20%.

Example 3

Respectively installing a pattern roller and a smooth heading roller on a slidable shaft, installing the smooth roller on a fixed shaft, rolling a strip with the width of 59.0mm and the thickness of 0.7mm under the production process, and preparing the C-shaped external-pattern efficient heat exchange tube with the tooth height of 0.16mm and the external-pattern number of 40 heads/inch at the production speed of 3m/min by controlling the rotation speed of an embossing and forming driving motor. By implementing the process method, the production cost of the external-pattern efficient heat exchange tube is reduced by 3 ten thousand yuan/ton, and the production efficiency is improved by 20%.

The present invention can also produce a textured heat exchange tube as shown in fig. 4.

While embodiments of the invention have been disclosed above, it is not limited to the applications set forth in the specification and the embodiments, which are fully applicable to various fields of endeavor for which the invention pertains, and further modifications may readily be made by those skilled in the art, it being understood that the invention is not limited to the details shown and described herein without departing from the general concept defined by the appended claims and their equivalents.