A refrigerant pipe inspection tool

Abstract

The utility model discloses a refrigerant pipe inspection tool, including an inspection tool table, characterized in that: a profiling positioning block, a vertical joint detection component and a flat joint detection component are arranged on the inspection tool table; the profiling positioning block is used to position the curved pipe portion of the refrigerant pipe; the vertical joint detection component includes a stand and a plug plate, a convex groove is horizontally arranged on the upper end of the stand, and a vertical groove for the vertical pipe section of the refrigerant pipe is arranged on one side of the stand; the upper end of the vertical groove is connected with the middle of the convex groove; the plug plate is used to be inserted into the lower end of the convex groove; one end of the plug plate is provided with a U-shaped inspection groove; the flat joint detection component includes an L-shaped table and an inspection pin; the L-shaped table is provided with a flat groove for the flat joint of the refrigerant pipe; the L-shaped table is provided with a pin hole, and the inspection pin is used to be inserted into the pin hole and the flat joint of the refrigerant pipe. The utility model can be used for a one-time full inspection of refrigerant pipes, can improve the inspection efficiency, and at the same time make the inspection very simple, accurate and convenient.

Description

Technical Field

[0001] The utility model relates to a refrigerant pipe inspection tool. Background Art

[0002] See also Figure 11-12 It is a refrigerant pipe installed on an automobile air conditioner. The refrigerant pipe includes a vertical joint N-1, a curved pipe portion N-2 and a flat joint N-7. The curved pipe portion N-2 includes a vertical pipe section N-21, a lower flat pipe section N-22, a horizontally inclined pipe section N-23, a vertically inclined pipe section N-24 and an upper flat pipe section N-25 arranged in sequence. The lower end of the vertical joint N-1 is provided with a first retaining ring N-11, and the rear end of the flat joint N-3 is provided with a second retaining ring N-31. The above-mentioned refrigerant pipe is installed in a car cabin with a narrow space, so there are strict precision requirements on its bending shape, the position and direction of the vertical joint and the flat joint. In order to meet the interchangeability of refrigerant pipe products, each product needs to be inspected during production.

[0003] However, after searching, it was found that the above-mentioned refrigerant pipe could not be inspected by conventional or existing technical inspection fixtures, so it was necessary to design a special inspection fixture. Utility Model Content

[0004] The utility model provides a refrigerant pipe inspection tool to solve the problem that the existing conventional and existing inspection tools are not suitable for inspecting the refrigerant pipe.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is as follows: a refrigerant pipe inspection tool, including a inspection tool table, characterized in that: a contour positioning block, a vertical joint detection component and a flat joint detection component are arranged on the inspection tool table; the contour positioning block is used to position the curved pipe portion of the refrigerant pipe; the vertical joint detection component comprises a stand and a plug plate, the upper end of the stand is horizontally provided with a convex groove, and one side of the stand is provided with a vertical groove for matching the vertical pipe section of the refrigerant pipe; the upper end of the vertical groove is connected with the middle part of the convex groove; the plug plate is used to be inserted into the lower end of the convex groove; one end of the plug plate is provided with a U-shaped inspection groove; the flat joint detection component comprises an L-shaped table and an inspection pin; the L-shaped table is provided with a flat groove for matching the flat joint of the refrigerant pipe; the L-shaped table is provided with a pin hole, and the inspection pin is used to insert the pin hole and the flat joint of the refrigerant pipe.

[0006] By adopting the above scheme, during detection, the bent portion of the refrigerant pipe is first positioned by the contoured positioning block; then the position and direction of the vertical joint of the refrigerant pipe is detected by the vertical joint detection component; and the position and direction of the flat joint of the refrigerant pipe is detected by the flat joint detection component. Therefore, the shape of the bent portion, the position and direction of the vertical joint and the flat joint can be combined and detected at one time, which can improve the detection efficiency.

[0007] When inspecting the vertical joint of the refrigerant pipe, the vertical pipe section of the refrigerant pipe is inserted into the vertical groove for positioning; the first retaining ring of the vertical joint is blocked at the upper end of the vertical groove, and then the plug plate is inserted into the lower end of the convex flat groove and slides forward. When the inner end of the U-shaped bayonet can touch the outer wall of the vertical joint and is located above the first retaining ring, it means that the direction and position of the vertical joint are qualified.

[0008] When inspecting the flat joint of the refrigerant pipe, the flat joint of the refrigerant pipe is inserted into the flat groove for positioning; then the inspection pin is inserted into the pin hole and into place. At this time, the inspection pin can be inserted into the pin hole and the flat joint of the refrigerant pipe at the same time, indicating that the direction and position of the flat joint are qualified.

[0009] Therefore, this technical solution can realize the one-time full detection of the bending shape of the refrigerant pipe, the position and direction of the vertical joint and the flat joint, and has the advantages of simple operation and high efficiency. Its characteristics are analyzed as follows:

[0010] First, when the plug plate is inserted into the lower end of the convex flat groove during inspection of the vertical joint of the refrigerant pipe, the U-shaped bayonet clamps the first retaining ring so that the vertical joint cannot swing forward, backward, left, right, or up and down, thereby ensuring that the flat joint of the refrigerant pipe can always remain fixed during inspection and the inspection is more accurate.

[0011] Secondly, since the vertical joints and flat joints of the refrigerant pipe are in different directions, and different detection methods are cleverly combined through the vertical joint detection component and the flat joint detection component, the positioning, loading and unloading, and detection of the refrigerant pipe are very simple, accurate, and convenient.

[0012] Preferably, the contoured positioning block includes a first positioning block, a second positioning block and a third positioning block; the first positioning block is provided with a first positioning groove for cooperating with the lower flat pipe section of the refrigerant pipe; the second positioning block is provided with a second positioning groove for cooperating with the horizontally inclined pipe section of the refrigerant pipe; the third positioning block is provided with a third positioning groove for cooperating with the vertically inclined pipe section of the refrigerant pipe.

[0013] Preferably, the cross section of the first positioning groove is a semicircular groove.

[0014] Preferably, the cross section of the second positioning groove is a semicircular groove;

[0015] Preferably, the cross section of the third positioning block is a semicircular groove.

[0016] Preferably, the cross section of the vertical groove is V-shaped, semicircular or U-shaped.

[0017] Preferably, the inspection pin comprises a holding section, a positioning section and a detection section, the outer diameters of which decrease successively; the positioning section is used to cooperate with the pin hole.

[0018] Beneficial effects of the utility model:

[0019] First, the utility model adopts a different structural design from the existing inspection fixture, which can realize a one-time full inspection of the bending shape of the refrigerant pipe, the position and direction of the vertical joint and the flat joint, which can meet the inspection requirements and improve the efficiency;

[0020] Secondly, in the present invention, when the plug plate is inserted into the lower end of the convex flat groove during the inspection of the vertical joint of the refrigerant pipe, the U-shaped bayonet clamps the first retaining ring so that the vertical joint cannot swing forward, backward, left, right, up or down, thereby ensuring that the flat joint of the refrigerant pipe can always remain fixed during the inspection and the inspection is more accurate;

[0021] Thirdly, since the vertical joints and the flat joints of the refrigerant pipe are in different directions, and the vertical joint detection components and the flat joint detection components adopt a clever combination of different detection methods, the positioning, loading and unloading and detection of the refrigerant pipe are very simple, accurate and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1-3 It is a structural schematic diagram of a refrigerant pipe inspection tool in the first embodiment of the utility model.

[0023] Figure 4-7 It is a structural schematic diagram of a refrigerant pipe inspection tool in Embodiment 1 of the utility model when inspecting a refrigerant pipe.

[0024] Figure 8 It is a structural schematic diagram of a refrigerant pipe inspection tool in the second embodiment of the utility model.

[0025] Fig. 9 It is a structural schematic diagram of the plug board in the second embodiment of the present utility model.

[0026] Fig.10 It is a structural schematic diagram of a refrigerant pipe inspection tool in Embodiment 2 of the present utility model when inspecting a refrigerant pipe.

[0027] Figure 11-12 This is a schematic diagram of the structure of an existing refrigerant pipe DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0029] Example 1: See Figure 1-3 A refrigerant pipe inspection tool, comprising an inspection tool table, on which a contour positioning block 2, a vertical joint detection component 3 and a flat joint detection component 4 are arranged;

[0030] The contoured positioning block 2 is located between the vertical joint detection component 3 and the flat joint detection component 4 and is used to position the bend portion N-2 of the refrigerant pipe N.

[0031] In this embodiment, the contoured positioning block 2 includes a first positioning block 2-1, a second positioning block 2-2 and a third positioning block 2-3; the first positioning block 2-1 is provided with a first positioning groove 2-11 for cooperating with the lower flat pipe section N-22 of the refrigerant pipe N; the second positioning block 2-2 is provided with a second positioning groove 2-21 for cooperating with the horizontal oblique pipe section N-23 of the refrigerant pipe N; the third positioning block 2-3 is provided with a third positioning groove 2-31 for cooperating with the vertical oblique pipe section N-24 of the refrigerant pipe N. During detection, the first positioning groove 2-11 is used for cooperating and positioning the lower flat pipe section N-22 of the refrigerant pipe N; the second positioning groove 2-21 is used for cooperating and positioning the horizontal oblique pipe section N-23 of the refrigerant pipe N; the third positioning groove 2-31 is used for cooperating and positioning the vertical oblique pipe section N-24 of the refrigerant pipe N.

[0032] Preferably, the cross-section of the first positioning groove 2 - 11 is a semicircular groove.

[0033] Preferably, the cross section of the second positioning groove 2-21 is a semicircular groove;

[0034] Preferably, the cross section of the third positioning block 2 - 3 is a semicircular groove.

[0035] Among them, the vertical joint detection component 3 includes a stand 3-1 and a plug plate 3-2, the upper end of the stand 3-1 is horizontally provided with a convex groove 3-11, and the convex groove 3-11 has narrow grooves and wide grooves distributed up and down; one side of the stand 3-1 is provided with a vertical groove 3-1 for matching the vertical pipe section N-21 of the refrigerant pipe N; the upper end of the vertical groove 3-12 is connected with the middle part of the convex groove 3-11; the plug plate 3-2 is used to be inserted into the lower end of the convex groove 3-11 (i.e., the wide groove); one end of the plug plate 3-2 is provided with a U-shaped inspection groove 3-21.

[0036] In this embodiment, the width of the plugging plate 3 - 2 matches the width of the wide slot and the plugging plate 3 - 2 can slide in the wide slot, but the width of the plugging plate 3 - 2 is greater than the width of the narrow slot.

[0037] In this embodiment, the width of the U-shaped inspection groove 3-21 is larger than the outer diameter of the vertical joint N-1 of the refrigerant pipe N and smaller than the outer diameter of the first retaining ring N-11 thereof.

[0038] Among them, the flat joint detection component 4 includes an L-shaped platform 4-1 and an inspection pin 4-2; a flat groove 4-12 for matching the flat joint N-3 of the refrigerant pipe N is provided on the step plane N-11 of the L-shaped platform 4-1; a pin hole 4-14 is provided on the step vertical surface N-13 of the L-shaped platform 4-1, and the inspection pin 4-2 is used to be inserted into the pin hole 4-14 and the flat joint N-3 of the refrigerant pipe N.

[0039] Preferably, the cross section of the vertical groove 3-12 is V-shaped, semicircular or U-shaped.

[0040] Preferably, the inspection pin 4-2 comprises a holding section 4-21, a positioning section 4-22 and a detection section 4-43, the outer diameters of which decrease in sequence; the positioning section 4-22 is used to cooperate with the pin hole 4-14. During the inspection, the positioning section 4-22 is inserted into the pin hole 4-14, and the detection section 4-43 is used to be inserted into the inner hole of the flat joint N-3 of the refrigerant pipe N.

[0041] See also Figure 4-7 During detection, this embodiment first locates the elbow N-2 of the refrigerant pipe N by the contour positioning block 2; then detects the position and direction of the vertical joint N-1 of the refrigerant pipe by the vertical joint detection component 3; and detects the position and direction of the flat joint N-1 of the refrigerant pipe by the flat joint detection component 4. Thus, the shape of the elbow N-2, the position and direction of the vertical joint and the flat joint can be detected in combination at one time, thereby improving the detection efficiency.

[0042] When inspecting the vertical joint N-1 of the refrigerant pipe N, the vertical pipe section N-21 of the refrigerant pipe N is inserted into the vertical groove 3-12 for positioning; and the first retaining ring N-11 of the vertical joint N-1 is blocked at the upper end of the vertical groove 3-12 and located above the bottom surface of the middle groove of the convex groove 3-11, and then the plug plate 3-2 is inserted into the lower end of the convex flat groove 3-11 and slides forward. When the inner end of the U-shaped bayonet 3-21 can touch the outer wall of the vertical joint N-1 and is located above the first retaining ring N-11, it means that the direction and position of the vertical joint N-1 are qualified.

[0043] When inspecting the flat joint N-3 of the refrigerant pipe N, the flat joint N-3 of the refrigerant pipe N is inserted into the flat groove 4-12 for positioning; then the inspection pin 4-2 is inserted into the pin hole 4-14 and into place. At this time, the inspection pin 4-2 can be inserted into the pin hole 4-14 and the inner hole of the flat joint N-3 of the refrigerant pipe N at the same time, indicating that the direction and position of the flat joint N-3 are qualified.

[0044] Therefore, this embodiment can realize the one-time full detection of the bending shape, the position and direction of the vertical joint and the flat joint of the refrigerant pipe, and has the advantages of simple operation and high efficiency. Its characteristics are analyzed as follows:

[0045] First, when the plug plate 3-2 is inserted into the lower end of the convex flat groove 3-11 during inspection of the vertical joint N-1 of the refrigerant pipe N, the U-shaped bayonet 3-21 clamps the first retaining ring N-11, so that the vertical joint N-1 cannot swing forward, backward, left, right, or up and down, thereby ensuring that the flat joint N-3 of the refrigerant pipe N can always remain fixed during inspection, making the inspection more accurate.

[0046] Second, since the vertical joint N-1 and the flat joint N-3 of the refrigerant pipe N are in different directions, and different detection methods are cleverly combined through the vertical joint detection component 3 and the flat joint detection component 4, the positioning, loading and unloading, and detection of the refrigerant pipe N are very simple, accurate, and convenient.

[0047] Embodiment 2: This embodiment is basically the same as Embodiment 1, except that: Figure 8-10 A step U groove 3-211 is provided at the lower end of the U-shaped inspection groove 3-21, and the width of the step U groove 3-211 matches the outer diameter of the first retaining ring N-11 of the refrigerant pipe N. During the inspection, the lower surface of the plug plate 3-2 contacts the lower surface of the convex groove 3-11, and the step U groove 3-211 is provided for the first retaining ring N-11 to avoid the position, so that it can be used to detect whether the thickness and outer diameter of the first retaining ring N-11 meet the appearance requirements.

[0048] The preferred specific embodiments of the utility model are described in detail above. It should be understood that ordinary technicians in this field can make many modifications and changes based on the concept of the utility model without creative work. Therefore, all technical solutions that can be obtained by technicians in this technical field based on the concept of the utility model through logical analysis, reasoning or limited experiments on the basis of the existing technology should be within the scope of protection determined by the claims.

Claims

1. A refrigerant pipe inspection tool, comprising an inspection tool stand, characterized in that: The inspection table (1) is provided with a contour positioning block (2), a vertical joint detection component (3) and a flat joint detection component (4); The contoured positioning block (2) is used to position the curved pipe portion (N-2) of the refrigerant pipe (N); The vertical joint detection assembly (3) comprises a stand (3-1) and an insert plate (3-2); a convex groove (3-11) is horizontally provided at the upper end of the stand (3-1); a vertical groove (3-12) for matching with the vertical pipe section (N-21) of the refrigerant pipe (N) is provided on one side of the stand (3-1); the upper end of the vertical groove (3-12) is connected to the middle of the convex groove (3-11); the insert plate (3-2) is used to be inserted into the lower end of the convex groove (3-11); one end of the insert plate (3-2) is provided with a U-shaped detection groove (3-21); The flat joint detection assembly (4) comprises an L-shaped platform (4-1) and a test pin (4-2); the L-shaped platform (4-1) is provided with a flat groove (4-12) for matching with the flat joint (N-3) of the refrigerant pipe (N); the L-shaped platform (4-1) is provided with a pin hole (4-14), and the test pin (4-2) is used to be inserted into the pin hole (4-14) and the flat joint (N-3) of the refrigerant pipe (N).

2. A refrigerant pipe inspection tool as claimed in claim 1, characterized in that: The contoured positioning block (2) comprises a first positioning block (2-1), a second positioning block (2-2) and a third positioning block (2-3); The first positioning block (2-1) is provided with a first positioning groove (2-11) for cooperating with the lower flat pipe section (N-22) of the refrigerant pipe (N); The second positioning block (2-2) is provided with a second positioning groove (2-21) for cooperating with the horizontal and oblique pipe section (N-23) of the refrigerant pipe (N); The third positioning block (2-3) is provided with a third positioning groove (2-31) for cooperating with the vertically inclined pipe section (N-24) of the refrigerant pipe (N).

3. A refrigerant pipe inspection tool as claimed in claim 2, characterized in that: The cross section of the first positioning groove (2-11) is a semicircular groove.

4. A refrigerant pipe inspection tool as claimed in claim 2, characterized in that: The cross section of the second positioning groove (2-21) is a semicircular groove.

5. A refrigerant pipe inspection tool as claimed in claim 2, characterized in that: The cross section of the third positioning block (2-3) is a semicircular groove.

6. A refrigerant pipe inspection tool as claimed in claim 1, characterized in that: The cross section of the vertical groove (3-12) is V-shaped, semicircular or U-shaped.

7. A refrigerant pipe inspection tool as claimed in claim 1, characterized in that: The width of the U-shaped inspection groove (3-21) is greater than the outer diameter of the vertical joint (N-1) of the refrigerant pipe (N) and smaller than the outer diameter of the first retaining ring (N-11) thereof.

8. A refrigerant pipe inspection tool as claimed in claim 1 or 7, characterized in that: The inspection pin (4-2) comprises a holding section (4-21), a positioning section (4-22) and a detection section (4-43) whose outer diameters decrease in sequence; the positioning section (4-22) is used to cooperate with the pin hole (4-14).

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