Aluminum cast heat exchanger detection device

Abstract

The utility model relates to an aluminium cast heat exchanger detection device, including bottom plate and U -shaped frame, the upper surface of bottom plate evenly distributed has the ball bearing, the surface of ball bearing is provided with the bearing plate, the surface of bearing plate rotatory installation has the rotary seat, the four sides of bottom plate top are common to have four side positioning mechanism, the both sides outer surfaces of U -shaped frame all install first electric push rod, and the end of first electric push rod telescopic end installs the mounting plate, and the surface of mounting plate is symmetrically provided with two through -slots, and the multiple ladder -shaped elastic rubber sealing plugs of adjustable installation have in through -slot. Through four side positioning mechanism to place aluminium cast heat exchanger on the rotary seat four side positioning, ensure its positional accuracy, then again utilize first electric push rod to push the multiple ladder -shaped elastic rubber sealing plugs on the mounting plate and insert on the hole of aluminium cast heat exchanger simultaneously and carry out the plugging, thereby avoided the tedious operation of traditional one by one plugging, significantly reduced the operation length, improved the detection efficiency.

Description

Technical Field

[0001] This utility model relates to the field of heat exchanger technology, specifically to a testing device for aluminum cast heat exchangers. Background Technology

[0002] Aluminum cast heat exchangers are heat exchange devices integrally formed from aluminum alloy using a precision casting process. Their core feature is that the heat exchange core and fluid channels are cast in a single mold, forming a complex, monolithic heat exchange unit. This design eliminates traditional welding or assembly processes, achieving a contactless, complete aluminum structure with excellent corrosion resistance and pressure resistance. After processing, aluminum cast heat exchangers require pressure testing.

[0003] Chinese patent CN216695877U discloses a universal fixture for air pressure testing of cast silicon-aluminum heat exchanger castings. This device achieves sealing of different models of cast silicon-aluminum heat exchanger castings through a movable sealing plug on an air pressure sealing frame. The stepped elastic rubber sealing plug is suitable for sealing blank holes or machined holes of various models and diameters. This avoids the cost waste caused by manufacturing multiple specifications of fixtures and facilitates management.

[0004] Although the above-mentioned device has good versatility, it requires one-by-one operation when sealing the holes on the aluminum cast heat exchanger. This process is time-consuming and labor-intensive, which greatly increases the operation time and thus leads to a significant reduction in overall work efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide a testing device for aluminum cast heat exchangers, which effectively solves the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution.

[0007] A testing device for an aluminum cast heat exchanger includes a base plate and a U-shaped frame. Ball bearings are evenly distributed on the upper surface of the base plate, and a support plate is mounted on the surface of the ball bearings. A rotating seat is rotatably mounted on the surface of the support plate. Four-sided positioning mechanisms are provided on the four sides above the base plate. First electric push rods are mounted on the outer surfaces of both sides of the U-shaped frame. Mounting plates are mounted on the ends of the telescopic ends of the first electric push rods. Two through slots are symmetrically formed on the surface of the mounting plates. Multiple stepped elastic rubber sealing plugs are adjustablely installed in the through slots, one of which is a hollow structure and connected to a water injection pipe.

[0008] Furthermore, the four-sided positioning mechanism includes two second electric push rods installed on the outer surfaces of both sides of the U-shaped frame. The ends of the telescopic ends of the second electric push rods are equipped with first positioning blocks. Mounting blocks are provided on both sides of the base plate in the width direction. A third electric push rod is installed on the outer surface of the mounting blocks. The ends of the telescopic ends of the third electric push rods are equipped with second positioning blocks.

[0009] Furthermore, a surrounding plate is installed on the surface of the base plate, and a bearing plate is set inside the surrounding plate. A first tension spring is connected to each of the four corners of the inner wall of the surrounding plate, and the end of the first tension spring is connected to the bearing plate.

[0010] Furthermore, grooves are provided on both sides of the upper surface of the enclosure, and sliders are provided at the bottom of the two mounting blocks, with the sliders positioned within the grooves.

[0011] Furthermore, fixing blocks are installed on the upper surface of the enclosure and on both sides of the mounting block. A second tension spring is connected to the surface of the fixing block, and the end of the second tension spring is connected to the mounting block.

[0012] Furthermore, guide posts are installed at the four corners of the mounting plate surface, and the ends of the guide posts slide through to the other side of the U-shaped frame.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows.

[0014] 1. This utility model uses a four-sided positioning mechanism to position the aluminum cast heat exchanger placed on the rotating seat from four sides, ensuring its position accuracy. Then, the first electric push rod pushes multiple stepped elastic rubber sealing plugs on the mounting plate to simultaneously insert into the holes of the aluminum cast heat exchanger for sealing. This avoids the tedious operation of sealing one by one in the traditional method, significantly reducing the operation time and improving the testing efficiency.

[0015] 2. This utility model, through the setting of the sliding groove and the slider, enables the mounting block to slide horizontally on the surrounding plate, adapting to the positional changes of the aluminum cast heat exchanger, and avoiding the situation where excessive frictional resistance between the second positioning block and the aluminum cast heat exchanger during the positioning process would damage the structure of the third electric push rod. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the overall structure of this utility model; Figure 2 This is a three-dimensional structural diagram of the four-sided positioning mechanism in this utility model; Figure 3 This is a top view of the four-sided positioning mechanism in this utility model. Figure 4 This is a partial structural diagram of the U-shaped frame in this utility model. Detailed Implementation

[0017] Please see Figures 1-4 The present invention provides an aluminum casting heat exchanger testing device, comprising a base plate 1, a U-shaped frame 101, a first electric push rod 102, a mounting plate 103, a through groove 104, a stepped elastic rubber sealing plug 105, a water injection pipe 106, a guide column 107, a bearing plate 2, a rotating seat 201, a ball bearing 202, a four-sided positioning mechanism 3, a second electric push rod 301, a first positioning block 302, a mounting block 303, a third electric push rod 304, a second positioning block 305, a surrounding plate 4, a first tension spring 401, a fixing block 402, and a second tension spring 403.

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0019] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connection" and "installation" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. Furthermore, "connection" can be a direct connection or an indirect connection through an intermediate medium. "Fixed" means that the relative positional relationship remains unchanged after the connection. The directional terms mentioned in the embodiments of this utility model, such as "inner," "outer," "top," and "bottom," are only for reference to the directions in the accompanying drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the embodiments of this utility model, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model.

[0020] In this embodiment of the invention, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0021] The upper surface of the base plate 1 is evenly distributed with ball bearings 202. A bearing plate 2 is provided on the surface of the ball bearings 202. A rotating seat 201 is rotatably mounted on the surface of the bearing plate 2. Four-sided positioning mechanisms 3 are provided on the four sides above the base plate 1. The outer surfaces of both sides of the U-shaped frame 101 are equipped with first electric push rods 102. The telescopic ends of the first electric push rods 102 are equipped with mounting plates 103. The surface of the mounting plate 103 has two symmetrical through grooves 104. Multiple stepped elastic rubber sealing plugs 105 are adjustablely installed in the through grooves 104. One of the stepped elastic rubber sealing plugs 105 is a hollow structure and is connected to a water injection pipe 106. Guide posts 107 are installed at the four corners of the surface of the mounting plate 103. The ends of the guide posts 107 slide through to the other side of the U-shaped frame 101.

[0022] In use, first adjust the position and number of stepped elastic rubber sealing plugs 105 on the mounting plate 103 according to the holes on the aluminum cast heat exchanger. Then, place the aluminum cast heat exchanger on the rotating seat 201, and then use the four-sided positioning mechanism 3 to position it on all four sides. When there is an angle deviation of the aluminum cast heat exchanger, the angle can be easily adjusted by utilizing the rotation characteristic of the rotating seat 201. When the lateral or longitudinal position of the aluminum cast heat exchanger shifts, the bearing plate 2 can drive the aluminum cast heat exchanger to roll on the ball bearings 202, thereby adjusting its position. After positioning, the holes correspond one-to-one with the stepped elastic rubber sealing plugs 105. Then, the first electric push rod 102 pushes the mounting plate 103 to move, causing it to simultaneously insert multiple stepped elastic rubber sealing plugs 105 onto the holes of the aluminum cast heat exchanger for sealing. This avoids the tedious traditional method of sealing one by one. Finally, water is injected into the interior of the aluminum cast heat exchanger through the water injection pipe 106, and a certain pressure is applied. The pressure change and the presence of any leaks are then observed. The entire process significantly reduces operation time and improves testing efficiency. Furthermore, the guide column 107 provides a limiting function for the mounting plate 103, ensuring that the mounting plate 103 can smoothly and accurately drive the stepped elastic rubber sealing plugs 105 to seal the holes.

[0023] Please see Figure 1 and Figure 2 The four-sided positioning mechanism 3 includes two second electric push rods 301 installed on the outer surfaces of both sides of the U-shaped frame 101. A first positioning block 302 is installed at the end of the telescopic end of the second electric push rod 301. Mounting blocks 303 are provided on both sides above the base plate 1 in the width direction. A third electric push rod 304 is installed on the outer surface of the mounting block 303. A second positioning block 305 is installed at the end of the telescopic end of the third electric push rod 304.

[0024] After the aluminum cast heat exchanger is placed on the rotating seat 201, the third electric push rods 304 on both sides push the two second positioning blocks 305 to abut against the two sides of the aluminum cast heat exchanger in the width direction, and the second electric push rods 301 on both sides push the two first positioning blocks 302 to abut against the two sides of the aluminum cast heat exchanger in the length direction. Through four-sided positioning, the accuracy of its position is ensured.

[0025] Please see Figure 3 and Figure 4 A surrounding plate 4 is mounted on the surface of the base plate 1, and a supporting plate 2 is disposed inside the surrounding plate 4. A first tension spring 401 is connected to each of the four corners of the inner wall of the surrounding plate 4, and the end of the first tension spring 401 is connected to the supporting plate 2. Sliding grooves are formed on both sides of the upper surface of the surrounding plate 4, and sliders are provided at the bottom of the two mounting blocks 303, with the sliders disposed within the sliding grooves. Fixing blocks 402 are mounted on the upper surface of the surrounding plate 4 on both sides of the mounting blocks 303, and a second tension spring 403 is connected to the surface of the fixing blocks 402, with the end of the second tension spring 403 connected to the mounting block 303.

[0026] When positioning the aluminum cast heat exchanger, the third electric push rods 304 on both sides are activated first, which drives the second positioning block 305 to press against the aluminum cast heat exchanger. Then, the second electric push rods 301 on both sides are activated. During the positioning process, the bearing plate 2 will slide on the ball 202 accordingly. Under the action of friction, the aluminum cast heat exchanger will drive the mounting block 303 to slide on the surrounding plate 4. At this time, at least two of the four first tension springs 401 are stretched. The second tension spring 403 located on one side of the mounting block 303 will also be stretched. When the second positioning block 305 separates from the surface of the aluminum cast heat exchanger, the stretched second tension spring 403 releases its elasticity and drives the mounting block 303 to reset. When the aluminum cast heat exchanger is removed from the rotating seat 201, the compressed first tension spring 401 releases its elasticity and drives the bearing plate 2 to reset. Thus, after each test, the positions of the bearing plate 2 and the mounting block 303 can be automatically reset without manual adjustment, further reducing additional tedious operations and improving the convenience of testing. The specific workflow and working principle of this device are as follows.

[0027] In use, first adjust the position and number of the stepped elastic rubber sealing plugs 105 on the mounting plate 103. Then, place the aluminum cast heat exchanger on the rotating base 201. The third electric push rods 304 on both sides are activated first, causing the two second positioning blocks 305 to press against both sides of the aluminum cast heat exchanger. Then, the second electric push rods 301 on both sides are activated, causing the first positioning blocks 302 on both sides to press against the other two sides of the aluminum cast heat exchanger. Under the action of the two second positioning blocks 305 and the two first positioning blocks 302, the aluminum cast heat exchanger will cause the rotating base 201 to rotate accordingly and the bearing plate 2 to slide accordingly. This ensures the accuracy of its position. At this time, the holes on the aluminum cast heat exchanger correspond one-to-one with each of the stepped elastic rubber sealing plugs 105. Then, the first electric push rod 102 pushes the mounting plate 103 to move, so that it drives the multiple stepped elastic rubber sealing plugs 105 on the mounting plate 103 to be inserted into the holes of the aluminum cast heat exchanger at the same time to seal them. This avoids the tedious operation of sealing one by one in the traditional way. Finally, water is injected into the interior of the aluminum cast heat exchanger through the water injection pipe 106 and a certain pressure is applied. The pressure change and whether there are any leaks can be observed. The whole process significantly reduces the operation time and improves the detection efficiency.

[0028] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A testing device for an aluminum cast heat exchanger, comprising a base plate (1) and a U-shaped frame (101), characterized in that: The upper surface of the base plate (1) is evenly distributed with ball bearings (202), and a bearing plate (2) is provided on the surface of the ball bearings (202). A rotating seat (201) is rotatably installed on the surface of the bearing plate (2). A four-sided positioning mechanism (3) is provided on the four sides above the base plate (1). The outer surfaces of both sides of the U-shaped frame (101) are equipped with first electric push rods (102). The ends of the telescopic ends of the first electric push rods (102) are equipped with mounting plates (103). The surface of the mounting plates (103) has two through slots (104) symmetrically opened. Multiple stepped elastic rubber sealing plugs (105) are adjustablely installed in the through slots (104). One of the stepped elastic rubber sealing plugs (105) is a hollow structure and is connected to a water injection pipe (106).

2. The aluminum cast heat exchanger testing device according to claim 1, characterized in that: The four-sided positioning mechanism (3) includes two second electric push rods (301) installed on the outer surfaces of both sides of the U-shaped frame (101). The end of the telescopic end of the second electric push rod (301) is equipped with a first positioning block (302). Mounting blocks (303) are provided on both sides of the base plate (1) in the width direction. A third electric push rod (304) is installed on the outer surface of the mounting block (303). The end of the telescopic end of the third electric push rod (304) is equipped with a second positioning block (305).

3. The aluminum cast heat exchanger testing device according to claim 2, characterized in that: The base plate (1) is fitted with a surrounding plate (4), and the bearing plate (2) is located inside the surrounding plate (4). A first tension spring (401) is connected to each of the four corners of the inner wall of the surrounding plate (4), and the end of the first tension spring (401) is connected to the bearing plate (2).

4. The aluminum cast heat exchanger testing device according to claim 3, characterized in that: The upper surface of the enclosure (4) is provided with grooves on both sides, and the bottom of the two mounting blocks (303) is provided with sliders, which are located in the grooves.

5. The aluminum cast heat exchanger testing device according to claim 4, characterized in that: Fixing blocks (402) are installed on the upper surface of the enclosure (4) and on both sides of the mounting block (303). A second tension spring (403) is connected to the surface of the fixing block (402), and the end of the second tension spring (403) is connected to the mounting block (303).

6. The aluminum cast heat exchanger testing device according to claim 4, characterized in that: Guide posts (107) are installed at the four corners of the surface of the mounting plate (103), and the ends of the guide posts (107) slide through to the other side of the U-shaped frame (101).

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