Device for detecting inner cavity of waste gas cooling shell of natural gas engine

Abstract

The utility model relates to a natural gas engine waste gas cooling shell inner cavity detection device, which comprises a base and a positioning module arranged on the base and used for sleeving a cooling shell, the positioning module comprises a stand column and a plurality of positioning blocks arranged at intervals along the length direction of the stand column, a counter bore is arranged on the surface of the uppermost positioning block, and the counter bore is communicated with the stand column. And a detection rod is arranged in the counter bore. The device is simple in structure, reasonable in design, time-saving and labor-saving, is set according to the size of a cooling module which needs to be installed in a cooling shell originally, simulates an assembly scene, is convenient to take and place workpieces, can effectively detect bad parts through detection of the positioning module and the detection rod, improves the detection efficiency, and prevents subsequent workpieces from being unable to be assembled.

Description

Technical Field

[0001] The utility model relates to a detection device for the inner cavity of an exhaust gas cooling shell of a natural gas engine. Background Art

[0002] At present, some shell-like parts are prone to deformation, such as shell-like castings made of cast iron, re-cast aluminum, and die-cast aluminum; in the prior art, for example, the exhaust gas cooling shell of an engine is produced by an aluminum re-casting process, and the total length of the cooling shell is 845 mm. Due to the structural characteristics of the product, the length of the internal sand core of this type is relatively long, which is extremely likely to cause deformation of the shell-like parts or the presence of surplus material in the inner cavity of the cooling shell due to the breakage of the sand core, making it easy to cause interference and unable to assemble when installing the cooling module in the inner cavity of the cooling shell subsequently; the existing general measuring tools cannot detect the inner cavity condition of the cooling shell, the inspection is difficult, time-consuming and laborious, and it is impossible to quickly detect the cooling shell with problems in the inner cavity, resulting in a relatively high defective rate of the produced cooling shells. Content of the Utility Model

[0003] The utility model improves the above problems, that is, the technical problem to be solved by the utility model is a detection device for the inner cavity of an exhaust gas cooling shell of a natural gas engine, which is convenient and efficient for detection.

[0004] The utility model is composed of a base and a positioning module arranged on the base and used for sleeving the cooling shell. The positioning module includes a column and a plurality of positioning blocks arranged at intervals along the length direction of the column. A counterbore is arranged on the surface of the uppermost positioning block, and a detection rod is arranged in the counterbore.

[0005] Further, the detection rod includes a rod body, a rounded corner square for extending into the top opening of the cooling shell, and a column body for cooperating with the counterbore, which are arranged in sequence from top to bottom. The rounded corner square and the column body are integrated.

[0006] Further, a plurality of positioning columns are arranged on the periphery of the positioning module. A limiting space for placing the cooling shell is formed between the plurality of positioning columns and the positioning module.

[0007] Further, a notch is arranged on the same side of each positioning block. The notches between adjacent positioning blocks are connected by a connecting rod, and at least two support columns are also arranged between adjacent positioning blocks.

[0008] Further, rounded corners are arranged on the periphery of the rounded corner square.

[0009] Further, handles are arranged on both sides of the base.

[0010] Further, support feet are arranged below the base.

[0011] Compared with the prior art, the utility model has the following beneficial effects: The device is reasonably designed and has a simple structure. First, remove the detection rod, then put the cooling housing onto the positioning module. After being put on, the positioning module is located in the inner cavity of the cooling housing. Then insert the detection rod into the counterbore of the positioning module through the opening at the top of the cooling housing. The cylinder of the detection rod is inserted and matched with the counterbore, and the rounded-corner square of the detection rod is matched with the opening of the cooling housing. If the cooling housing can be successfully put on the positioning module and the detection rod can be successfully inserted into the counterbore and the opening of the cooling housing, then the cooling housing is qualified. The feature of this inspection tool is that it is set according to the size of the cooling module originally to be installed in the cooling housing, simulates the assembly scenario, is convenient for workpiece picking and placing operations, can effectively detect defective parts, improve the detection efficiency, and avoid subsequent workpieces from being unable to be assembled. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 is a diagram showing the use state of an embodiment of the utility model;

[0013] Figure 2 is a schematic structural diagram of an embodiment of the utility model Figure 1 ;

[0014] Figure 3 is a schematic structural diagram of an embodiment of the utility model Figure 2 ;

[0015] Figure 4 is a cross-sectional view of an embodiment of the utility model;

[0016] Figure 5 is Figure 1 a partial enlarged view of part A in

[0017] Figure 6 is a partial schematic diagram of the position of the detection rod in an embodiment of the utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following further describes the present utility model in detail with reference to the drawings and specific embodiments.

[0019] Embodiment: As Figures 1-6 shown, in this embodiment, a detection device for the inner cavity of the exhaust gas cooling housing of a natural gas engine is provided, which includes a base 1 and a positioning module 2 arranged on the base and used for the cooling housing to be put on. The positioning module 2 includes a column 201 and a plurality of positioning blocks 202 arranged at intervals along the length direction of the column. A counterbore 203 is arranged on the surface of the positioning block at the uppermost position, and a detection rod 3 is arranged in the counterbore.

[0020] The above-mentioned detection rod 3 includes a rod body 301, a rounded-corner square 302 for extending into the opening 12 at the top of the cooling housing, and a cylinder 303 for matching with the counterbore, which are arranged in sequence from top to bottom. The rounded-corner square and the cylinder are integrated.

[0021] During operation, first remove the detection rod, then slip the cooling housing onto the positioning module. After slipping it on, the positioning module is located inside the inner cavity of the cooling housing. Then insert the detection rod through the opening at the top of the cooling housing into the counterbore of the positioning module. The cylinder of the detection rod is inserted and mated with the counterbore, and the rounded-corner square of the detection rod is mated with the opening 12 of the cooling housing. If the cooling housing can be smoothly slipped onto the positioning module and at the same time the detection rod can be smoothly inserted into the counterbore and the opening of the cooling housing, then the cooling housing is qualified. The feature of this inspection tool is that it is set according to the size of the cooling module originally to be installed inside the cooling housing, simulating the assembly scenario, with convenient workpiece picking and placing operations, capable of effectively detecting defective parts, improving the detection efficiency, and avoiding subsequent inability to assemble workpieces.

[0022] In an embodiment of the present invention, three positioning posts 4 are provided on the periphery of the positioning module. A limiting space for placing the cooling housing is formed between the three positioning posts and the positioning module; the lower part of the cooling housing is located within the limiting space.

[0023] In an embodiment of the present invention, in order to ensure that each positioning block has a notch 5 provided on the same side, the notches between adjacent positioning blocks are connected by a connecting rod 6, and at least two support posts 7 are further provided between adjacent positioning blocks; the two support posts can be diagonally arranged.

[0024] In an embodiment of the present invention, rounded corners 304 are provided at the four corner positions on the periphery of the rounded-corner square; the radian of the rounded corner can match the radian of the opening of the cooling housing.

[0025] In an embodiment of the present invention, in order to facilitate the movement of the detection device, handles 8 are provided on both sides of the base.

[0026] In an embodiment of the present invention, support feet 9 are provided below the base; the support feet include support screws 901 and positioning disks 902 provided at the lower ends of the support screws. The upper and lower ends of the support screws are respectively threadedly connected to the threaded holes provided on the base and the positioning disks.

[0027] In an embodiment of the present invention, multiple through holes 11 can be provided at the lower part of the cooling housing 10, and fixing holes 101 are provided on the base corresponding to the positions of the through holes. By sequentially inserting pins through the through holes and the fixing holes, the cooling housing can be further fixed on the base.

[0028] For any of the technical solutions disclosed by the present utility model, unless otherwise stated, if it discloses a numerical range, the disclosed numerical range is a preferred numerical range. Any person skilled in the art should understand that the preferred numerical range is only the numerical values with obvious technical effects or representativeness among many implementable numerical values. Since there are too many numerical values to list exhaustively, the present utility model only discloses some numerical values to illustrate the technical solutions of the present utility model. Moreover, the listed numerical values should not constitute a limitation on the protection scope of the present utility model.

[0029] Meanwhile, for the present utility model, if it discloses or involves components or structural parts that are fixedly connected to each other, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (such as using screws or bolts for connection), or it can also be understood as: a non-detachable fixed connection (such as riveting, welding). Of course, the mutual fixed connection can also be replaced by an integral structure (such as being integrally formed by casting process) (except when it is obviously impossible to adopt the integral forming process).

[0030] If terms such as "first" and "second" are used in this article to limit components, those skilled in the art should be aware that the use of "first" and "second" is only for the convenience of differentiating components in description. Unless otherwise stated, the above terms have no special meaning.

[0031] In addition, for any of the technical solutions disclosed by the present utility model, the terms used to represent the positional relationship or shape, unless otherwise stated, include states or shapes that are approximate, similar, or close thereto.

[0032] Any component provided by the present utility model can either be assembled from multiple separate components or be a single component manufactured by an integral forming process.

[0033] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present utility model and not to limit them; although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that: modifications can still be made to the specific implementation manners of the present utility model or equivalent replacements can be made to some technical features; without departing from the spirit of the technical solutions of the present utility model, they should all be covered within the scope of the technical solutions claimed by the present utility model.

Claims

1. A natural gas engine exhaust gas cooling housing inner cavity detection device, characterized in that: It includes a base and a positioning module arranged on the base and used for cooling the shell. The positioning module includes a column and a plurality of positioning blocks arranged at intervals along the length direction of the column. A countersunk hole is arranged on the surface of the uppermost positioning block, and a detection rod is arranged in the countersunk hole.

2. The natural gas engine exhaust gas cooling housing inner cavity detection device according to claim 1, characterized in that: The detection rod comprises a rod body, a rounded square block for extending into the top opening of the cooling shell, and a column for matching with the countersunk hole, which are arranged in sequence from top to bottom. The rounded square block and the column are integrated.

3. The natural gas engine exhaust gas cooling housing inner cavity detection device according to claim 1, characterized in that: A plurality of positioning posts are arranged around the positioning module, and a limiting space for placing the cooling shell is formed between the plurality of positioning posts and the positioning module.

4. The natural gas engine exhaust gas cooling housing inner cavity detection device according to claim 1, characterized in that: A notch is arranged on the same side of each positioning block, the notches of adjacent positioning blocks are connected via a connecting rod, and at least two supporting columns are arranged between adjacent positioning blocks.

5. The natural gas engine exhaust gas cooling housing inner cavity detection device according to claim 2, characterized in that: The rounded corners are arranged on the periphery of the rounded corner block.

6. The natural gas engine exhaust gas cooling housing inner cavity detection device according to claim 1, characterized in that: Handles are arranged on both sides of the base.

7. The natural gas engine exhaust gas cooling housing inner cavity detection device according to claim 1, characterized in that: A supporting stand is arranged below the base.

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