Open frame type vaporizer finned tube machining device

Abstract

The utility model discloses an open-frame vaporizer finned tube processing device, which belongs to the technical field of finned tube production, solves the problem that the position is inconvenient to adjust when the existing overlong finned tube is processed, and comprises two lathes, three-jaw chucks are arranged on the lathes, the tail ends of headstocks of the two lathes are opposite to each other and are arranged at a certain interval, and the three-jaw chucks are arranged on the two lathes. A supporting platform is arranged between the two lathes, two rows of positioning devices are arranged on the supporting platform in the length direction of the supporting platform, each positioning device comprises a tailstock and a plurality of center frames, finned tube protection sleeves are arranged in holes in the center frames, and the tailstocks are arranged at the ends away from the tail ends of lathe headstocks. The tailstock, the center frame, the tail end of a headstock of the lathe and the three-jaw chuck are transversely arranged on the same horizontal line. According to the utility model, the problem that the position of an overlong finned tube or a finned tube with a complicated geometrical shape is difficult to change due to the limitation of a production space in the turning operation is effectively solved, so that the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fin tube production, and in particular relates to an open-frame type gasifier fin tube processing device. Background Art

[0002] The open-frame vaporizer, also known as the seawater open-frame vaporizer, is a type of LNG vaporizer equipment. Its working principle is to use the temperature difference of seawater circulation to vaporize LNG. Compared with the use of heaters for vaporization, it saves energy consumption, thereby reducing the operating cost of the LNG receiving station. It has the advantages of good economy and low operating cost, and is widely used in existing production projects. The finned tube in the open-frame vaporizer is currently a more effective and efficient heat exchange element. Usually, fins are added to the surface of the heat exchange tube to increase the outer surface area (or inner surface area) of the heat exchange tube. Most of them use water, steam, and heat transfer oil as the medium of the heat dissipation equipment, and the heat is dissipated through the medium, thereby achieving the purpose of improving the heat exchange efficiency.

[0003] In the existing production process of finned tubes of seawater open-frame gasifiers, they are first extruded by an extruder, and then finished after finishing, stretching, and turning. Usually, one end of the finned tube is processed before the other end. Due to production needs, the size of the finned tube is relatively long, up to 6 meters. After one end of the finned tube is processed, the other end needs to be adjusted before processing. However, due to limited workshop space, the position cannot be adjusted well. At the same time, there are certain safety hazards when adjusting the position, and more labor is required, which is time-consuming and labor-intensive, and also affects production efficiency. Utility Model Content

[0004] The utility model aims to provide an open frame type gasifier fin tube processing device to solve the problem of inconvenient position adjustment during the processing of the existing over-long fin tubes.

[0005] The technical solution of the utility model is: an open-frame gasifier fin tube processing device, comprising two lathes, the lathes are provided with a three-jaw chuck, the three-jaw chuck is provided with a clamp, the tail ends of the headstock boxes of the two lathes are arranged opposite to each other and at a certain interval, a support platform is provided between the two lathes, the width of the support platform is greater than the horizontal spacing between the tail ends of the headstock boxes of the two lathes, two rows of positioning devices are respectively provided on the support platform along its length direction, the positioning devices include a tailstock and multiple center frames, fin tube protective sleeves are provided in the holes on the center frames, the tailstock is arranged at one end away from the tail end of the lathe headstock box, and the tailstock, the center frame, the tail end of the lathe headstock box and the three-jaw chuck are arranged in the same horizontal line laterally.

[0006] As a further improvement of the utility model, the support platform is provided with a plurality of slide rails along its length direction, the slide rails are arranged in the same direction as the width direction of the support platform, a liftable support seat and a limit block are slidably provided on the slide rails, and the limit blocks are arranged on both sides of the liftable support seat.

[0007] As a further improvement of the utility model, the cross-section of the fin tube protective sleeve is convex, a bearing is provided between the raised portion of the fin tube protective sleeve and the inner periphery of the hole of the center frame, and a shaft retaining ring is also provided on the raised portion of the fin tube protective sleeve.

[0008] As a further improvement of the utility model, the fin tube protective sleeve is made of nylon.

[0009] The beneficial effects of the utility model are as follows: by using the utility model, the turning operation of the other end face can be performed without changing the position during the processing of the finned tube. The two finned tubes are respectively inserted into the positioning device placed on the supporting platform, and the multiple center frames and tailstocks effectively ensure the stability and support of the processing operation. The finned tube protective sleeve and the finned tube are in clearance fit, so as to prevent the finned tube from vibrating during the turning process, and further ensure the quality of the finished product. The processing operation is performed by a three-jaw chuck, and the clamp on the three-jaw chuck further enables the finned tube to be stably fixed, not affected by vibration and swing, and can ensure the processing accuracy and processing quality during the processing. After the processing of one end of the two finned tubes is completed, the two finned tubes are respectively loaded into the lathes opposite to each other, that is, the processing operation of the other end face can be performed without changing the position.

[0010] The utility model effectively solves the problem that finned tubes that are too long and have complex geometric shapes are difficult to change their positions during turning operations due to limited production space, thereby effectively increasing production efficiency, increasing output per unit time, improving the rate of finished products, saving manpower and time costs, and further effectively improving product quality and production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a front view of the overall structure of the utility model;

[0012] Figure 2 This is a top view of the overall structure of the utility model;

[0013] Figure 3 This is a schematic diagram of the connection between the three-jaw chuck and the fixture in the utility model;

[0014] Figure 4 This is a side view of the center frame structure of the utility model;

[0015] Figure 5 This is a front cross-sectional view of the center frame structure of the utility model;

[0016] Figure 6 This is a schematic diagram of the structure of the fin tube protective sleeve in the utility model;

[0017] Figure 7 It is a schematic diagram of the tailstock structure in the utility model.

[0018] In the figure: 1- lathe; 11- three-jaw chuck; 12- fixture; 2- support platform; 3- tailstock; 4- center frame; 41- bearing; 42- fin tube protective cover; 43- shaft retaining ring; 44- bolt; 45- nut; 5- fin tube; 6- slide rail; 7- liftable support seat; 8- limit block. DETAILED DESCRIPTION

[0019] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0020] like Figure 1-Figure 7 As shown, an open-frame gasifier fin tube processing device includes two lathes 1, the lathes 1 are provided with a three-jaw chuck 11, the three-jaw chuck 11 is provided with a fixture 12, the tail ends of the headstocks of the two lathes 1 are arranged opposite to each other and at a certain interval, a support platform 2 is provided between the two lathes 1, the width of the support platform 2 is greater than the lateral spacing between the tail ends of the headstocks of the two lathes 1, and two rows of positioning devices are respectively provided on the support platform 2 along its length direction, the positioning devices include a tailstock 3 and a plurality of center frames 4, fin tube protective sleeves 42 are provided in holes on the center frames 4, the tailstock 3 is arranged at an end away from the tail end of the headstock of the lathe 1, and the tailstock 3, the center frame 4, the tail end of the headstock of the lathe 1 and the three-jaw chuck 11 are arranged in the same horizontal line laterally.

[0021] The support platform 2 is provided with a plurality of slide rails 6 along its length direction. The slide rails 6 are arranged in the same direction as the width direction of the support platform 2 . A liftable support seat 7 and a limit block 8 are slidably provided on the slide rails 6 . The limit blocks 8 are arranged on both sides of the liftable support seat 7 .

[0022] The cross section of the fin tube protective sleeve 42 is convex, a bearing 41 is provided between the raised portion of the fin tube protective sleeve 42 and the inner periphery of the hole of the center frame 4, and a shaft retaining ring 43 is also provided on the raised portion of the fin tube protective sleeve 42; the fin tube protective sleeve 42 is made of nylon.

[0023] Embodiment 1,

[0024] Taking a northwest aluminum plant as an example, the existing general-purpose lathe 1 of the plant has limited space in the operation workshop during the processing of the end face of the fin tube 5 with a length of 6m, and it is difficult to adjust the end face position of the fin tube 5. The device is applied to install the tail ends of the headstocks of the two lathes 1 at a horizontal spacing of 8m and a vertical spacing of 1.2m, and the spacing between the two rows of tailstocks 3, the center frame 4, the tail ends of the headstocks of the lathes 1 and the three-jaw chuck 11 are all the same.

[0025] Lathe 1 uses C630 lathe, which has the advantages of compact structure, reliability and durability, strong adaptability and wide processing range, so as to meet the needs of small and medium-sized production enterprises for equipment with low price, simple operation, convenient maintenance, high processing yield and easy cutting.

[0026] The clamp 12 is arranged at the clamping opening of the three-jaw chuck 11, and the clamp 12 extends out of the clamping opening of the three-jaw chuck 11, so that the fin tube 5 can be stably fixed without being affected by the vibration and swing generated during the operation of the equipment, and the processing accuracy and processing quality can be guaranteed during the processing.

[0027] The bottom of the center frame 4 is connected and fixed to the support platform 2 by bolts 44 and nuts 45. A bearing 41 is provided between the raised portion of the fin tube protective sleeve 42 and the inner periphery of the hole of the center frame 4. A shaft retaining ring 43 is also provided on the raised portion of the fin tube protective sleeve 42. The bearing 41 is clamped between the fin tube protective sleeve 42 and the shaft retaining ring 43. The fin tube protective sleeve 42 provided in the hole of the center frame 4 is clearance-matched with the fin tube 5 to prevent the fin tube 5 from vibrating during turning. At the same time, the fin tube protective sleeve 42 can be freely loaded and unloaded, which enhances flexibility and brings convenience to maintenance or processing. The nylon material of the fin tube protective sleeve 42 has the characteristics of high strength, wear resistance, corrosion resistance, and good vibration resistance, which can effectively prevent the fin tube 5 and the fin tube protective sleeve 42 from being damaged or worn due to friction or other factors.

[0028] After the device is installed as a whole, first, the two fin tubes 5 are horizontally inserted and placed in the positioning device on the supporting platform 2, so that one end of the fin tube 5 is fixed on the tailstock 3, and the middle part of the fin tube 5 passes through the fin tube protective sleeves 42 on multiple center frames 4, and the end to be processed passes through the tail of the headstock spindle of the lathe 1 and enters the three-jaw chuck 11. At this time, the clamp 12 extending from the clamping mouth of the three-jaw chuck 11 further limits and positions the fin tube 5 to ensure its stability during processing.

[0029] Two lathes 1 are operating at the same time. After the processing is completed, the two fin tubes 5 are respectively pulled out from the tail of the main shaft of the headstock box of the lathe 1. After being pulled out, they are first placed on the liftable support seat 7. The placement position of the fin tube is adjusted by sliding the liftable support seat 7 on the slide rail 6. The operating space of the operator is not restricted, and the flexibility is increased. The limit block 8 can ensure that the liftable support seat 7 will not be displaced at will, thereby ensuring the reliability and safety of the placement.

[0030] Then the two fin tubes 5 are respectively loaded into the lathes 1 opposite to each other for processing, which can realize the turning processing of the other end face of the fin tube 5 without changing the position, thereby solving the problem of difficulty in adjusting the position of the fin tube 5 in a limited space, and at the same time, multiple groups of this device can be set according to the working space and working requirements, so as to effectively improve the production efficiency. Through actual use, when producing fin tubes 5, this processing device can efficiently and concisely complete the end face processing of fin tubes 5 with a length of 6m and complex geometric shapes, saving time and labor while also saving production costs.

Claims

1. An open-frame gasifier fin tube processing device, characterized in that: The invention comprises two lathes (1), wherein the lathes (1) are provided with a three-jaw chuck (11), and the three-jaw chuck (11) is provided with a clamp (12), the tail ends of the headstocks of the two lathes (1) are arranged opposite to each other and at a certain interval, a support platform (2) is provided between the two lathes (1), the width of the support platform (2) is greater than the horizontal interval between the tail ends of the headstocks of the two lathes (1), and two rows of positioning devices are respectively provided on the support platform (2) along its length direction, the positioning devices comprising a tailstock (3) and a plurality of center frames (4), a fin tube protective sleeve (42) is provided in a hole on the center frame (4), the tailstock (3) is arranged at an end away from the tail end of the headstock of the lathe (1), and the tailstock (3), the center frame (4), the tail end of the headstock of the lathe (1) and the three-jaw chuck (11) are arranged in the same horizontal line in the horizontal direction.

2. The open-frame gasifier fin tube processing device according to claim 1, characterized in that: The support platform (2) is provided with a plurality of slide rails (6) along its length direction, the slide rails (6) being arranged in the same direction as the width direction of the support platform (2), a liftable support seat (7) and a limit block (8) being slidably arranged on the slide rails (6), and the limit blocks (8) being arranged on both sides of the liftable support seat (7).

3. An open-frame gasifier fin tube processing device according to claim 1 or 2, characterized in that: The cross section of the fin tube protection sleeve (42) is convex, a bearing (41) is provided between the raised portion of the fin tube protection sleeve (42) and the inner periphery of the hole of the center frame (4), and a shaft retaining ring (43) is also provided on the raised portion of the fin tube protection sleeve (42).

4. The open-frame gasifier fin tube processing device according to claim 3 is characterized in that: The fin tube protective sleeve (42) is made of nylon.

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