CN220613674U - Large expansion ratio spray pipe extension section assembling and detecting device - Google Patents
Large expansion ratio spray pipe extension section assembling and detecting device Download PDFInfo
- Publication number
- CN220613674U CN220613674U CN202321918477.9U CN202321918477U CN220613674U CN 220613674 U CN220613674 U CN 220613674U CN 202321918477 U CN202321918477 U CN 202321918477U CN 220613674 U CN220613674 U CN 220613674U
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- Prior art keywords
- spray pipe
- assembly
- cylindrical surface
- expansion ratio
- disc
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- 239000007921 spray Substances 0.000 title claims abstract description 56
- 238000001514 detection method Methods 0.000 claims description 24
- 238000013461 design Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The utility model discloses a high-precision assembling and detecting device for an extension section of a spray pipe with a large expansion ratio, which comprises a positioning rod and a positioning disc, wherein the positioning rod at least comprises a section of conical surface and a section of cylindrical surface, the conical surface is coaxial with the cylindrical surface, the minimum outer diameter of the conical surface is smaller than the minimum inner diameter of the throat part of a short spray pipe, and the maximum outer diameter of the conical surface is larger than the maximum inner diameter of the throat part of the short spray pipe; the positioning disc comprises a disc body, the diameter of the outer circle of the disc body is smaller than the maximum inner diameter of the extension section of the spray pipe, the circle center of the disc body is provided with an assembly hole coaxial with the disc body, and the aperture of the assembly hole is equal to the outer diameter of the cylindrical surface on the positioning rod. The utility model has reliable design principle, reasonable structure, simple operation and convenient use and maintenance.
Description
Technical Field
The utility model relates to a high-precision assembling and detecting device for a large expansion ratio spray pipe extension section, which is used for assembling and detecting coaxiality of the large expansion ratio spray pipe extension section, belongs to the technical field of mechanical manufacturing, and can also be used for assembling and positioning products and detecting coaxiality in other fields.
Background
The large expansion ratio nozzle is generally manufactured in two parts, namely a short nozzle and a nozzle extension, in consideration of manufacturing factors. After the parts are processed, the two products are assembled together by means of screw connection or direct welding. In the assembly process, the requirement on the assembly precision of the product is high, and the coaxiality of the two products needs to be ensured.
Currently, there are many assembly assurance methods in this field, including assembly positioning using dowel pins, and direct design of product structures for assembly positioning. The assembly methods are directly applied to the product, so that the product has complex structure, increased processing difficulty and production cost and is not universal. The coaxiality detection is needed after the product is assembled, the existing detection method generally uses three coordinates for measurement, the measurement cost is high, and the field is limited.
Disclosure of Invention
The utility model aims to provide the device for assembling and detecting the extension section of the spray pipe with large expansion ratio, which can conveniently, intuitively, rapidly, effectively and accurately perform assembling and positioning and detect the coaxiality of related parts without designing a positioning structure on the spray pipe when the related extension section of the spray pipe with large expansion ratio is assembled and detected. In addition, the assembly and detection device has low manufacturing cost and reliable assembly and detection principle.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
a large expansion ratio spray pipe extension section assembly and detection device, wherein the large expansion ratio spray pipe comprises a short spray pipe and a spray pipe extension section which are coaxially assembled, the assembly and detection device comprises,
the positioning rod at least comprises a section of conical surface and a section of cylindrical surface, the conical surface is coaxial with the cylindrical surface, the minimum outer diameter of the conical surface is smaller than the minimum inner diameter of the throat part of the short spray pipe, and the maximum outer diameter of the conical surface is larger than the maximum inner diameter of the throat part of the short spray pipe;
the positioning disc comprises a disc body, the diameter of the outer circle of the disc body is smaller than the maximum inner diameter of the extension section of the spray pipe, the circle center of the disc body is provided with an assembly hole coaxial with the disc body, and the aperture of the assembly hole is equal to the outer diameter of the cylindrical surface on the positioning rod.
Further, at least one section of cylindrical surface for extension length is arranged between the upper conical surface of the positioning rod and the cylindrical surface, and the outer diameter of the cylindrical surface for extension length is between the maximum outer diameter of the conical surface and the outer diameter of the cylindrical surface. When the length of the positioning rod is insufficient, the length of the positioning rod is expanded by adding a section of cylindrical surface for extending the length between the cylindrical surface and the conical surface, so that the use of spray pipes of different specifications is satisfied. Meanwhile, on the premise of ensuring the rigidity of the positioning rod, the cylindrical surface for the extension length is arranged in a mode that the outer diameter is gradually reduced, so that the aim of weight reduction is fulfilled.
Further, the positioning disc further comprises a boss coaxial with the disc body, and the assembly hole penetrates through the boss. The structural design of boss is used for making things convenient for operating the location disc of operating personnel.
Further, the tail end of the cylindrical surface comprises a circle of chamfer, and the hole opening of the assembly hole is provided with a circle of chamfer. The chamfering is convenient for assembling the positioning rod and the positioning disc.
Further, the outer edge of the positioning disc is arc-shaped.
Compared with the prior art, the assembling and detecting device is suitable for coaxial assembling and detecting of the large expansion ratio spray pipe extension section and the short spray pipe, is simple in structure, low in manufacturing cost and convenient to operate, and can meet the assembling and detecting requirements of the short spray pipe and the spray pipe extension section with different specifications by adjusting the outer diameter of the conical surface on the positioning rod, the length of the positioning rod and the outer diameter of the positioning disc, and the positioning structure is not required to be additionally designed on the spray pipe.
Drawings
FIG. 1 is a schematic illustration of an assembly and detection apparatus for a large expansion ratio nozzle extension Gao Jingzhun of the present utility model;
FIG. 2 is a schematic view of a locating lever according to the present utility model;
FIG. 3 is a schematic view of a positioning disk in accordance with the present utility model;
in the figure, a 1-positioning rod; 2-positioning the disc.
Detailed Description
The present utility model will be further described with reference to the drawings and the specific embodiments, but it should not be construed that the scope of the subject matter of the present utility model is limited to the following embodiments, and various modifications, substitutions and alterations made according to the ordinary skill and familiar means of the art to which this utility model pertains are included within the scope of the present utility model without departing from the above technical idea of the utility model.
As shown in figures 1-3, the device is a high-precision assembly and detection device with large expansion ratio of the extension section of the spray pipe, and mainly comprises parts such as a positioning rod 1, a positioning disc 2 and the like.
As shown in fig. 1, the positioning rod 1 and the positioning disc 2 realize coaxiality assembly and detection of the spray pipe in a hole shaft matching mode in use.
As shown in fig. 2, the positioning rod 1 includes five sections from left to right, namely, a conical surface at the leftmost end, a cylindrical surface with the shortest length at one end of the larger outer diameter of the conical surface, then a cylindrical surface for extending the length, and a cylindrical surface matched with the positioning disc 2 at the rightmost end. When the conical surface is machined, the throat inner diameter of the short spray pipe is required to be between the maximum outer diameter and the minimum outer diameter of the conical surface.
As shown in fig. 3, the positioning disc 2 includes a disc body and a boss coaxial, and an assembly hole located at the center of the disc body penetrates the disc body and the boss. The circumferential edge profile of the disc body is processed by adopting an arc.
When the assembly and detection device is used, the short spray pipe is vertically placed, the outlet of the short spray pipe faces upwards, and the conical surface of the positioning rod 1 is inserted into the throat part of the short spray pipe until the conical surface of the positioning rod 1 is completely attached to the throat part of the short spray pipe. The spray pipe extension section is placed on the short spray pipe, and the assembly surfaces of the spray pipe extension section and the short spray pipe are mutually attached. Finally, the boss at the center of the positioning disc 2 is held by hands, the positioning disc 2 is slowly placed in the positioning rod 1 until the edge of the positioning disc 2 (the circular arc at the outer edge of the disc body, namely the combined circular arc of R2 and R2.5 in FIG. 3) is completely attached to the inner wall of the extension section of the spray pipe, and no gap is left, for example, the judgment can be carried out by naked eyes or a feeler gauge.
If the coaxiality of the assembled or welded large expansion ratio spray pipe is required to be measured, the assembly and detection device can be used for detecting, and whether the edge of the positioning disc 2 (the circular arc of the outer edge of the disc body, namely the combined circular arc of R2 and R2.5 in the figure 3) is completely attached to the inner wall of the extension section of the spray pipe or not is observed during the test.
The assembly and detection device has reliable design principle, simple and reasonable structure, simple operation and convenient use and maintenance, and can meet the assembly and detection requirements of various short spray pipes and spray pipe extension sections. The assembly and detection device can be used for conveniently, intuitively, rapidly, effectively and accurately assembling and detecting coaxiality of related parts.
The positioning rod 1, the positioning disc 2 and other parts can be processed by common machining, heat treatment and other methods. After processing, the conical surface and the rod tail cylindrical surface of the positioning rod 1 and the central assembly hole of the positioning disc 2 are required to be straight, and the assembly hole of the positioning disc 2 and the outer circular arc of the disc body have good coaxiality.
The assembling and detecting device is used for reducing the mass of the spray pipe and simplifying the structure of the spray pipe, and simultaneously ensures the coaxiality requirement of assembling the short spray pipe and the spray pipe extension section on the original basis. The device can also be used for detecting the assembly coaxiality of the spray pipe after the spray pipe is assembled, and the detection is not limited by the field, so that the cost is low. Meanwhile, different types of assembling and detecting devices can be manufactured by changing the size of the conical surface of the positioning rod 1, so that the assembling and measuring range of the assembled and measured spray pipe is reached. The assembly and detection device has reliable design principle, simple and reasonable structure, simple operation, convenient use and maintenance and wide application range, and can meet the assembly and detection requirements of various short spray pipes and spray pipe extension sections.
The assembly and detection structure is simple, easy to manufacture, convenient to use and maintain, and economical and applicable. All devices manufactured according to the structural scheme belong to the protection scope of the utility model.
Claims (5)
1. Big expansion ratio spray tube extension assembly and detection device, big expansion ratio spray tube includes coaxial short spray tube and the spray tube extension of assembly, its characterized in that: the assembly and detection device comprises a device body and a device body,
the positioning rod (1) at least comprises a section of conical surface and a section of cylindrical surface, the conical surface is coaxial with the cylindrical surface, the minimum outer diameter of the conical surface is smaller than the minimum inner diameter of the throat part of the short spray pipe, and the maximum outer diameter of the conical surface is larger than the maximum inner diameter of the throat part of the short spray pipe;
the positioning disc (2), the positioning disc (3) comprises a disc body, the diameter of the outer circle of the disc body is smaller than the maximum inner diameter of the extension section of the spray pipe, the circle center of the disc body is provided with an assembly hole coaxial with the disc body, and the aperture of the assembly hole is equal to the outer diameter of the cylindrical surface on the positioning rod (1).
2. The high expansion ratio nozzle extension assembly and detection device of claim 1, wherein: at least one section of cylindrical surface for extension length is arranged between the upper conical surface and the cylindrical surface of the positioning rod (1), and the outer diameter of the cylindrical surface for extension length is between the maximum outer diameter of the conical surface and the outer diameter of the cylindrical surface.
3. The high expansion ratio nozzle extension assembly and detection device of claim 1, wherein: the positioning disc (2) further comprises a boss coaxial with the disc body, and the assembly hole penetrates through the boss.
4. The high expansion ratio nozzle extension assembly and detection device of claim 1, wherein: the tail end of the cylindrical surface comprises a circle of chamfer angles, and the hole opening of the assembly hole is provided with a circle of chamfer angles.
5. The high expansion ratio nozzle extension assembly and detection device of claim 1, wherein: the outer edge of the positioning disc (2) is arc-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321918477.9U CN220613674U (en) | 2023-07-20 | 2023-07-20 | Large expansion ratio spray pipe extension section assembling and detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321918477.9U CN220613674U (en) | 2023-07-20 | 2023-07-20 | Large expansion ratio spray pipe extension section assembling and detecting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220613674U true CN220613674U (en) | 2024-03-19 |
Family
ID=90220883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321918477.9U Active CN220613674U (en) | 2023-07-20 | 2023-07-20 | Large expansion ratio spray pipe extension section assembling and detecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220613674U (en) |
-
2023
- 2023-07-20 CN CN202321918477.9U patent/CN220613674U/en active Active
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