A condenser tube plate processing positioning tool
Patent Information
- Application Number
- CN202611135746.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-29
- Publication Date
- 2026-09-29
AI Technical Summary
[0004]有鉴于此，本发明的目的在于提出一种冷凝器管板加工定位工装，以解决产品加工合格率低的问题
[0012]本发明的有益效果：本发明提供的一种冷凝器管板加工定位工装，当需要对冷凝器管板某一处进行加工时，将冷凝器管板放置在环形支撑板上，多个夹持件对冷凝器管板进行夹持固定，之后，移动件将固定气筒移动到冷凝器管板某一处一侧的冷凝器管板上管孔下方，对通气管进行充气，气体通过通气管进入到固定气筒，推动固定气筒内的活塞及滑动气筒向上移动，所述滑动气筒贯穿上述冷凝器管板上的管孔，直到活塞移动到固定气筒的内腔顶部，然后继续充气，活塞的通气孔内第二压力传感器检测到气压达到设定值，电控信号驱动电磁阀打开通气孔，活塞的通气孔处集成压力传感器，气压达到设定值，电控信号驱动电磁阀打开通气孔，气体通过通气孔进入到滑动气筒的内腔中，之后再进入到与滑动气筒的内腔连通的气囊中，气囊膨胀与管孔侧壁抵接，便于对冷凝器管板进行进一步固定，进而提高冷凝器管板后续加工的稳定性及产品加工合格率。
Smart Images
Figure CN122829622A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of condenser tube sheet processing technology, and in particular to a positioning fixture for condenser tube sheet processing. Background Technology
[0002] Condensers are core heat exchange equipment in the power, chemical, HVAC, and energy industries. The condenser tube sheet, as a key pressure-bearing and sealing component of the condenser, is mainly used to fix the heat exchange tube bundle and isolate the hot and cold media chambers. Its machining accuracy determines the condenser's heat exchange efficiency, sealing performance, and operational stability. The condenser tube sheet has a large overall size and uniform thickness, with numerous high-precision tube holes densely arranged in an array. The coaxiality, diameter accuracy, hole spacing uniformity, and surface flatness of these holes are crucial prerequisites for ensuring the quality of subsequent heat exchange tube installation, expansion, and welding. Excessive machining and positioning deviations in the condenser tube sheet can easily lead to a decrease in heat exchange efficiency.
[0003] Currently, condenser tube sheets generally require clamping and fixing with positioning fixtures during machining processes such as drilling, milling, and hole finishing. However, existing positioning fixtures are mostly single-point, localized clamping structures. For flat condenser tube sheet workpieces, they lack uniform positioning support over the entire area. The tube sheet's own weight and machining cutting forces can easily cause bending deformation in the middle of the sheet, reducing the product's pass rate. Summary of the Invention
[0004] In view of this, the purpose of this invention is to provide a condenser tube sheet machining positioning fixture to solve the problem of low product processing qualification rate.
[0005] To achieve the above objectives, the present invention provides a condenser tube sheet machining and positioning fixture, including a worktable, an annular support plate for supporting the condenser tube sheet on the worktable, a collection groove formed within the annular support plate on the worktable, a collection pipe connected to the lower end of the collection groove, a collection box communicating with the collection pipe below the worktable, a clamping assembly for holding the condenser tube sheet on the worktable, the clamping assembly including multiple clamping members equally angled around the outside of the annular support plate, a movable member within the collection groove, and a fixed component connected to the movable member. A fixed air cylinder is provided, wherein the movable component is used to control the horizontal movement of the fixed air cylinder within the collection tank. A vent pipe communicating with the inner cavity of the fixed air cylinder is provided at the lower part of the fixed air cylinder. A piston is slidably connected inside the fixed air cylinder. A sliding air cylinder penetrating the upper end of the fixed air cylinder is fixedly connected to the upper end of the piston. A through-hole for the sliding air cylinder to pass through is provided at the upper end of the fixed air cylinder. A vent hole communicating with the inner cavity of the sliding air cylinder is provided on the piston. A solenoid valve and a second pressure sensor connected to the solenoid valve are provided in the vent hole. An air bladder communicating with the inner cavity of the sliding air cylinder is provided on the outer wall of the sliding air cylinder.
[0006] Optionally, the movable component includes a connecting frame installed on the inner side wall of the collection tank. A rotating motor is mounted on the connecting frame. The output end of the rotating motor is connected to a rotating shaft via a coupling. The axis of the rotating shaft coincides with the axis of the annular support plate. A rotating plate is connected to the upper end of the rotating shaft. A linear module is mounted on the rotating plate. The linear module is equipped with a driving component and a slide. The driving component is used to control the slide to reciprocate along the length direction of the rotating plate. The upper end of the slide is fixedly connected to the fixed air cylinder.
[0007] Optionally, the side wall of the rotating plate is provided with a side sliding groove for mounting the linear module.
[0008] Optionally, the linear module includes a drive motor mounted on the rotating plate. The output end of the drive motor is connected to a lead screw via a coupling. A nut is threaded onto the lead screw. The nut is connected to a slider that is slidably connected to the side slide groove. The nut is connected to the slide table. The slide table is slidably arranged at the opening of the side slide groove. Bellows covers are connected to both sides of the slide table. The other end of the bellows cover is fixedly connected to the side wall of the side slide groove. The bottom side of the bellows cover is slidably engaged with the side slide groove.
[0009] Optionally, the clamping component includes a clamping telescopic cylinder mounted on the workbench, the telescopic end of the clamping telescopic cylinder being connected to a clamping plate for clamping the condenser tube sheet, and the clamping plate having an elastic pad on the side facing the condenser tube sheet.
[0010] Optionally, the clamping plate includes a vertically arranged side pressure plate for abutting against the side wall of the condenser tube sheet, and an upper pressure plate is provided on the side of the side pressure plate facing the condenser tube sheet.
[0011] Optionally, an air suction machine is provided on the side wall of the collection box.
[0012] The beneficial effects of this invention: This invention provides a condenser tube sheet processing and positioning fixture. When processing a certain part of the condenser tube sheet is required, the condenser tube sheet is placed on an annular support plate, and multiple clamping components clamp and fix the condenser tube sheet. Then, a moving component moves a fixed gas cylinder to a position below the tube hole on one side of the condenser tube sheet, and inflates the vent pipe. The gas enters the fixed gas cylinder through the vent pipe, pushing the piston and sliding gas cylinder inside the fixed gas cylinder upward. The sliding gas cylinder passes through the tube hole on the condenser tube sheet until the piston moves to... The top of the inner cavity of the fixed air cylinder is then filled with air. The second pressure sensor in the vent hole of the piston detects that the air pressure has reached the set value. The electronic control signal drives the solenoid valve to open the vent hole. The pressure sensor is integrated at the vent hole of the piston. When the air pressure reaches the set value, the electronic control signal drives the solenoid valve to open the vent hole. The gas enters the inner cavity of the sliding air cylinder through the vent hole, and then enters the air bladder that is connected to the inner cavity of the sliding air cylinder. The air bladder expands and abuts against the side wall of the tube hole, which facilitates further fixation of the condenser tube sheet, thereby improving the stability of subsequent processing of the condenser tube sheet and the product processing qualification rate. Attached Figure Description
[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0014] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of a partial cross-sectional structure of the present invention; Figure 3 This is a schematic diagram of the internal structure of the present invention; Figure 4 for Figure 3 A schematic diagram of the cross-section.
[0015] In the diagram: 1. Workbench; 2. Collection trough; 3. Collection pipe; 4. Annular support plate; 5. Clamping telescopic cylinder; 6. Clamping plate; 61. Side pressure plate; 62. Upper pressure plate; 7. Connecting frame; 8. Rotating motor; 9. Rotating shaft; 10. Rotating plate; 11. Side slide groove; 12. Slide table; 13. Drive motor; 14. Lead screw; 15. Nut; 16. Slider; 17. Bellows cover; 18. Fixed air cylinder; 19. Sliding air cylinder; 20. Airbag; 21. Piston; 22. Vent. Detailed Implementation
[0016] To make the objectives, technical solutions, and advantages of the present invention clearer, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.
[0017] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this invention should have the ordinary meaning understood by those skilled in the art to which this invention pertains. The terms "first," "second," and similar terms used in this invention do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.
[0018] like Figures 1 to 4 As shown, a condenser tube sheet machining and positioning fixture includes a worktable 1. An annular support plate 4 is provided on the worktable 1 to support the condenser tube sheet. A collection groove 2 is provided within the annular support plate 4 on the worktable 1. A collection pipe 3 is connected to the lower end of the collection groove 2. A collection box communicating with the collection pipe 3 is provided below the worktable 1. A clamping assembly for holding the condenser tube sheet is provided on the worktable 1. The clamping assembly includes multiple clamping members arranged at equal angles around the outside of the annular support plate 4. A movable member is provided within the collection groove 2. The movable member is connected to a fixing cylinder 18, and the movable member is used to control the fixing... The air cylinder 18 moves horizontally within the collection tank 2. The lower part of the fixed air cylinder 18 is provided with a vent pipe communicating with the inner cavity of the fixed air cylinder 18. A piston 21 is slidably connected inside the fixed air cylinder 18. A sliding air cylinder 19 is fixedly connected to the upper end of the piston 21, penetrating the upper end of the fixed air cylinder 18. The upper end of the fixed air cylinder 18 has a through-hole for the sliding air cylinder 19 to pass through. A vent hole 22 communicating with the inner cavity of the sliding air cylinder 19 is provided on the piston 21. An electromagnetic valve and a second pressure sensor connected to the electromagnetic valve are provided inside the vent hole 22. An air bladder 20 communicating with the inner cavity of the sliding air cylinder 19 is provided on the outer wall of the sliding air cylinder 19.
[0019] When machining is required on a specific part of the condenser tube sheet, the condenser tube sheet is placed on the annular support plate 4. Multiple clamping components clamp and fix the condenser tube sheet. Then, a moving component moves the fixed gas cylinder 18 to a position below the tube hole on one side of the condenser tube sheet, and inflates the vent pipe. Gas enters the fixed gas cylinder 18 through the vent pipe, pushing the piston 21 and the sliding gas cylinder 19 inside the fixed gas cylinder 18 upward. The sliding gas cylinder 19 passes through the tube hole on the condenser tube sheet until the piston 21 moves to the top of the inner cavity of the fixed gas cylinder 18. Then, inflation continues. The second pressure sensor inside the vent 22 of piston 21 detects that the air pressure has reached the set value. The electronic control signal drives the solenoid valve to open the vent 22. The pressure sensor is integrated at the vent 22 of piston 21. When the air pressure reaches the set value, the electronic control signal drives the solenoid valve to open the vent 22. The gas enters the inner cavity of the sliding air cylinder 19 through the vent 22, and then enters the air bag 20 which is connected to the inner cavity of the sliding air cylinder 19. The air bag 20 expands and abuts against the side wall of the tube hole, which facilitates further fixation of the condenser tube sheet, thereby improving the stability of subsequent processing of the condenser tube sheet and the product processing qualification rate.
[0020] The movable component includes a connecting frame 7 mounted on the inner wall of the collection tank 2. A rotary motor 8 is mounted on the connecting frame 7. The output end of the rotary motor 8 is connected to a rotary shaft 9 via a coupling. The axis of the rotary shaft 9 coincides with the axis of the annular support plate 4. A rotary plate 10 is connected to the upper end of the rotary shaft 9. A linear module is mounted on the rotary plate 10. The linear module is equipped with a driving component and a slide 12. The driving component controls the slide 12 to reciprocate along the length of the rotary plate 10. The upper end of the slide 12 is fixedly connected to the fixed air cylinder 18. When it is necessary to process a certain part of the condenser tube sheet, the rotary motor 8 is started, driving the rotary shaft 9 and the rotary plate 10 to rotate around the axis of the annular support plate 4. Then, the linear module on the rotary plate 10 controls the fixed air cylinder 18 to move horizontally within the collection tank 2. The movable component moves the fixed air cylinder 18 to a certain part of the condenser tube sheet below the tube hole on one side. A vent pipe is connected to an air pump. When the air pump is started, it inflates the vent pipe, and the gas enters the fixed air cylinder 18 through the vent pipe, pushing the piston 21 and the sliding air cylinder 19 inside the fixed air cylinder 18 to move upward. The sliding air cylinder 19 passes through the tube hole on the condenser tube sheet until the piston 21 moves to the top of the inner cavity of the fixed air cylinder 18. Then, inflation continues. The second pressure sensor in the vent hole 22 of the piston 21 detects that the air pressure has reached the set value. The electronic control signal drives the solenoid valve to open the vent hole 22. The pressure sensor is integrated at the vent hole 22 of the piston 21. When the air pressure reaches the set value, the electronic control signal drives the solenoid valve to open the vent hole 22. The gas enters the inner cavity of the sliding air cylinder 19 through the vent hole 22, and then enters the air bag 20, which is connected to the inner cavity of the sliding air cylinder 19. The air bag 20 expands and abuts against the side wall of the tube hole, which facilitates further fixation of the condenser tube sheet, thereby improving the stability of subsequent processing of the condenser tube sheet and the product processing qualification rate.
[0021] The side wall of the rotating plate 10 is provided with a side sliding groove 11 for installing the linear module, which facilitates the installation of the linear module.
[0022] The linear module includes a drive motor 13 mounted on the rotating plate 10. The output end of the drive motor 13 is connected to a lead screw 14 via a coupling. A nut 15 is threaded onto the lead screw 14. The nut 15 is connected to a slider 16 that is slidably connected to the side slide groove 11. The nut 15 is connected to the slide table 12. The slide table 12 is slidably arranged at the opening of the side slide groove 11. Bellows covers 17 are connected to both sides of the slide table 12. The other end of the bellows cover 17 is fixedly connected to the side wall of the side slide groove 11. The bottom side of the bellows cover 17 is slidably engaged with the side slide groove 11. When the drive motor 13 is started, it drives the lead screw 14 to rotate, causing the nut 15 and the slide table 12 to reciprocate along the side slide groove 11.
[0023] The clamping component includes a clamping telescopic cylinder 5 installed on the workbench 1. The telescopic end of the clamping telescopic cylinder 5 is connected to a clamping plate 6 for clamping the condenser tube sheet. An elastic pad is provided on the side of the clamping plate 6 facing the condenser tube sheet.
[0024] The clamping plate 6 includes a vertically arranged side pressure plate 61 for abutting against the side wall of the condenser tube sheet. The upper end of the side pressure plate 61 facing the condenser tube sheet has an upper pressure plate 62 for pressing against the upper surface of the condenser tube sheet. The extension of the clamping telescopic cylinder 5 is used to control the clamping plate 6 to approach the condenser tube sheet until all clamping plates 6 abut against the condenser tube sheet. In this way, the clamping assembly clamps the condenser tube sheet. The clamping plate 6 is provided with a first pressure sensor on the side facing the condenser tube sheet. When the pressure detected by all the first pressure sensors reaches the set value, all clamping telescopic cylinders 5 stop extending.
[0025] An air suction machine is installed on the side wall of the collection box to facilitate the collection of debris entering the collection tank 2 into the collection box for processing via the collection pipe 3.
[0026] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the invention is limited to these examples. The invention is not limited to the above-described embodiments, that is, it does not mean that the invention must rely on the above methods and structures to be implemented. Under the concept of the invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the invention as described above, which are not provided in the details for the sake of brevity.
[0027] The embodiments of this invention are intended to cover all such substitutions, modifications, and variations falling within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this invention should be included within the scope of protection of this invention.
Claims
1. A condenser tube sheet machining and positioning fixture, comprising a worktable (1), characterized in that, The workbench (1) is provided with an annular support plate (4) for supporting the condenser tube sheet. A collection groove (2) is provided inside the annular support plate (4) on the workbench (1). A collection pipe (3) is connected to the lower end of the collection groove (2). A collection box communicating with the collection pipe (3) is provided below the workbench (1). A clamping assembly for clamping the condenser tube sheet is provided on the workbench (1). The clamping assembly includes multiple clamping members that are equally angled around the outside of the annular support plate (4). A moving part is provided inside the collection groove (2). A fixed air cylinder (18) is connected to the moving part. The moving part is used to control the fixed air cylinder (18) to move horizontally inside the collection groove (2). The fixed air cylinder (18) is provided with a vent pipe at the lower part that communicates with the inner cavity of the fixed air cylinder (18). A piston (21) is slidably connected inside the fixed air cylinder (18). A sliding air cylinder (19) that penetrates the upper end of the fixed air cylinder (18) is fixedly connected to the upper end of the piston (21). A through-hole for the sliding air cylinder (19) to pass through is opened at the upper end of the fixed air cylinder (18). A vent hole (22) that communicates with the inner cavity of the sliding air cylinder (19) is opened on the piston (21). An electromagnetic valve and a second pressure sensor connected to the electromagnetic valve are provided in the vent hole (22). An air bag (20) that communicates with the inner cavity of the sliding air cylinder (19) is provided on the outer wall of the sliding air cylinder (19).
2. The condenser tube sheet machining and positioning fixture according to claim 1, characterized in that, The movable component includes a connecting frame (7) installed on the inner wall of the collection tank (2). A rotating motor (8) is installed on the connecting frame (7). The output end of the rotating motor (8) is connected to a rotating shaft (9) via a coupling. The axis of the rotating shaft (9) coincides with the axis of the annular support plate (4). A rotating plate (10) is connected to the upper end of the rotating shaft (9). A linear module is installed on the rotating plate (10). A driving component and a slide (12) are provided on the linear module. The driving component is used to control the slide (12) to move back and forth along the length direction of the rotating plate (10). The upper end of the slide (12) is fixedly connected to the fixed air cylinder (18).
3. The condenser tube sheet machining positioning fixture according to claim 2, characterized in that, The side wall of the rotating plate (10) is provided with a side sliding groove (11) for mounting the linear module.
4. The condenser tube sheet machining and positioning fixture according to claim 3, characterized in that, The linear module includes a drive motor (13) mounted on the rotating plate (10). The output end of the drive motor (13) is connected to a lead screw (14) via a coupling. A nut (15) is threaded onto the lead screw (14). The nut (15) is connected to a slider (16) that is slidably connected to the side slide groove (11). The nut (15) is connected to the slide table (12). The slide table (12) is slidably arranged at the opening of the side slide groove (11). Both sides of the slide table (12) are connected to bellows covers (17). The other end of the bellows cover (17) is fixedly connected to the side wall of the side slide groove (11). The bottom side of the bellows cover (17) is slidably engaged with the side slide groove (11).
5. The condenser tube sheet machining positioning fixture according to claim 1, characterized in that, The clamping component includes a clamping telescopic cylinder (5) installed on the workbench (1). The telescopic end of the clamping telescopic cylinder (5) is connected to a clamping plate (6) for clamping the condenser tube sheet. An elastic pad is provided on the side of the clamping plate (6) facing the condenser tube sheet.
6. The condenser tube sheet machining positioning fixture according to claim 5, characterized in that, The clamping plate (6) includes a vertically arranged side pressure plate (61) for abutting against the side wall of the condenser tube sheet, and an upper pressure plate (62) is provided on the side of the side pressure plate (61) facing the condenser tube sheet.
7. The condenser tube sheet machining and positioning fixture according to claim 1, characterized in that, An air suction machine is installed on the side wall of the collection box.