Measuring tool
By designing a measuring tool that includes a gauge rod, clamps, and testing components, the problem of measuring the wall thickness of the annular groove in the gas turbine cylinder block was solved, enabling direct and accurate wall thickness measurement and rapid verification, thus avoiding processing costs and quality risks.
Patent Information
- Application Number
- CN202511039560.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-07-28
- Publication Date
- 2025-11-07
AI Technical Summary
The wall thickness of the annular groove in the inner cavity of the gas turbine cylinder is difficult to measure directly and accurately, resulting in high processing costs and the inability to detect defective products in a timely manner, posing a batch quality risk.
Design a measuring tool that includes a gauge rod, a clamp, and a measuring element. The clamp forms a clamping space, the gauge rod serves as a supporting reference, and the positioning pin and the probe of the measuring instrument abut against the inner and outer walls respectively, avoiding interference structures and directly measuring the wall thickness.
It enables direct and flexible measurement of the wall thickness of the cylinder block annular groove, ensuring measurement accuracy and allowing for rapid verification of wall thickness compliance after processing, thus avoiding batch quality risks.
Smart Images
Figure CN120907401A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of detection devices, in particular to a measuring tool. BACKGROUND
[0002] As the core power equipment, the manufacturing precision of the key component of the cylinder of the gas turbine directly affects the performance and reliability of the whole machine. In the manufacturing process of the cylinder of the gas turbine, an annular groove structure is usually designed at a specific position in the inner cavity. The wall thickness at the annular groove is one of the key features to ensure the structural strength, sealing performance and gas flow dynamics of the cylinder, and the size tolerance requirement is extremely strict. However, due to the complex structure of the cylinder of the gas turbine, the limited space in the inner cavity, and the protruding structural features on the inner wall and the outer wall at the position of the annular groove, it is difficult to measure the wall thickness of the cylinder at the position of the annular groove. The wall thickness quality assurance of the annular groove of the cylinder of the gas turbine still relies on the imported high-precision numerical control machine tool for direct machining, and the high-precision control of the machine tool itself ensures that the wall thickness of the annular groove can meet the accuracy and quality requirements after machining. However, such a method increases the manufacturing cost of the cylinder, and cannot directly and accurately measure the wall thickness of the annular groove for timely detection and isolation of defective products, which poses a batch quality risk. SUMMARY
[0003] Therefore, it is necessary to provide a wall thickness measuring tool that can directly, accurately and conveniently measure the wall thickness at the position of the annular groove in the inner cavity of the cylinder of the gas turbine due to the structural interference.
[0004] The measuring tool provided by the present application comprises:
[0005] a table rod;
[0006] two clamps, the clamps comprising a first clamp and a second clamp, the first clamp and the second clamp cooperating to form a first clamping space and a second clamping space, the table rod being arranged in the first clamping space and being detachably connected with the clamp body;
[0007] a detection piece comprising a positioning needle and a measuring table, the positioning needle being connected with the second clamping space of one of the clamps, the body of the measuring table being connected with the second clamping space of the other clamp, and the probe of the measuring table being opposite to the positioning needle.
[0008] In one embodiment, the second clamping spaces of the two clamps are oppositely arranged.
[0009] In one embodiment, the measuring tool further comprises a first fastener, the first fastener being detachably connected with the clamp, the first fastener being inserted into the second clamping space and locking the positioning needle.
[0010] In one of the embodiments, the first fastener is a screw.
[0011] In one of the embodiments, the second clamping space is a through hole, and the positioning needle and / or the probe of the measuring gauge are columnar and arranged in the through hole.
[0012] In one of the embodiments, at least two second fasteners are arranged on each of the clamps, and the two second fasteners are arranged on the upper side and the lower side of the first clamping space respectively and connect and lock the watch stem with the first clamping space of the clamp.
[0013] In one of the embodiments, the second fastener is a bolt or a screw.
[0014] The first clamp and the second clamp of the above measuring tool are detachably connected to form the first clamping space and the second clamping space, the watch stem serves as a support reference, the watch stem is connected with the two clamps, the second clamping space coaxial with the first clamping space is formed between the two clamps, the two second clamping spaces are respectively arranged with the positioning needle box and the measuring gauge body, and the probe of the measuring gauge is arranged opposite to the positioning needle. During measurement, the positioning needle is first positioned by using a standard gauge block and the zero point position of the dial gauge is marked, and then the positioning needle is locked and fixed. Then, the measuring tool is placed at the annular groove to be measured, the probe of the telescopic measuring gauge is extended to pass through the interference structure and abut against the inner wall and the outer wall of the annular groove to be measured of the cylinder body respectively through the positioning needle, and the numerical value of the measuring gauge is read, so that the wall thickness value of the cylinder at the annular groove is obtained. The measuring tool can directly and flexibly extend the probe into the annular groove area in the inner cavity of the cylinder for measurement, effectively avoids the interference of the protruding structure of the inner wall / outer wall, and uses the watch stem as a support reference to ensure the accuracy of the measured wall thickness value. The wall thickness of the cylinder at the annular groove can be quickly measured and verified on site after processing to determine whether the wall thickness of the cylinder at the annular groove is qualified, so that the out-of-tolerance products can be isolated and the batch quality risk caused by processing can be avoided. BRIEF DESCRIPTION OF DRAWINGS
[0015] Figure 1 FIG. 1 is a schematic diagram of the overall structure of the measuring tool in one embodiment;
[0016] Figure 2 FIG. 2 is a schematic diagram of the use state of the measuring tool in one embodiment.
[0017] 1, watch stem; 2, first fastener; 3, positioning needle; 4, second fastener; 5, first clamp; 6, second clamp; 7, measuring gauge; A, cross-sectional structure of the annular groove of the cylinder. DETAILED DESCRIPTION
[0018] In order to make the above objectives, features and advantages of the present application more clear and comprehensible, the specific embodiments of the present application will be described below in detail with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in many different ways from what is described herein, and should not be construed as being limited to the embodiments set forth herein, but should be understood to include all possible embodiments.
[0019] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are merely for the purpose of facilitating the description of the present application and simplifying the description, and therefore should not be construed as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present application.
[0020] In addition, the terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implying a specified number of technical features indicated. Therefore, the features defined with "first", "second", etc. can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise explicitly specified.
[0021] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise explicitly limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0022] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "under" the second feature can be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature "above", "over" and "on" the second feature can be that the first feature is directly above or obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "under" and "under" the second feature can be that the first feature is directly below or obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0023] It is to be understood that when an element as a preamble is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" or "coupled" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "upper", "lower", "left", "right", and similar expressions as used herein are for illustrative purposes only and are not intended to be limiting.
[0024] Referring to Figure 1 and Figure 2 , an embodiment of the present application provides a measuring tool, comprising: a table rod 1; a clamp, the clamp is two, the clamp comprises a first clamp 5 and a second clamp 6, the first clamp 5 and the second clamp 6 cooperate to form a first clamping space and a second clamping space, the table rod 1 is arranged in the first clamping space and is detachably connected with the clamp body; a detection piece, comprising a positioning needle 3 and a measuring gauge 7, the positioning needle 3 is connected with the second clamping space of one of the clamps, the body of the measuring gauge 7 is connected with the second clamping space of the other clamp, and the probe of the measuring gauge 7 is opposite to the positioning needle 3. The above measuring tool, the first clamp 5 and the second clamp 6 of the clamp are detachably connected to form a first clamping space and a second clamping space, the table rod 1 serves as a support reference, the table rod 1 is connected with the two clamps, so that the two clamps can form coaxial second clamping spaces, the two second clamping spaces are respectively installed with the positioning needle 3 and the body of the measuring gauge 7, and the probe of the measuring gauge 7 is arranged opposite to the positioning needle 3. During measurement, first, a standard gauge block is used to position the positioning needle 3 and mark the zero position of the dial gauge, and then the positioning needle 3 is locked and fixed. Then, the measuring tool is placed at the annular groove to be measured, the probe of the telescopic measuring gauge 7 is extended, the probe passes through the interference structure and abuts against the inner wall and the outer wall of the annular groove to be measured of the cylinder respectively through the positioning needle 3, and the value of the measuring gauge 7 is read, so that the wall thickness value of the cylinder at the annular groove is obtained. The measuring tool can directly and flexibly extend the probe into the annular groove area in the inner cavity of the cylinder for measurement, effectively avoids the interference of the protruding structure of the inner wall / outer wall, and uses the table rod 1 as a support reference to ensure the accuracy of the measured wall thickness value, so that the wall thickness of the cylinder at the annular groove can be quickly measured and verified on site after processing, the compliance of the wall thickness of the cylinder at the annular groove can be determined, the out-of-tolerance products can be isolated, and the batch quality risk caused by processing can be avoided.
[0025] Optionally, in one of the embodiments, the height of the two clamps is determined according to the structure and shape of the cylinder to be measured, and the clamps can be replaced as needed, so that when the measuring tool is placed at the annular groove to be measured, the probe can pass through the interference structure and abut against the inner wall and the outer wall of the annular groove to be measured of the cylinder respectively through the positioning needle 3, and direct measurement is realized.
[0026] Optionally, the measuring tool is a dial gauge.
[0027] In one embodiment, the second clamping spaces of the two clamps are oppositely arranged to ensure that coaxial second clamping spaces are formed between the two clamps, so that the probe of the dial gauge can be accurately positioned relative to the positioning needle.
[0028] To ensure accurate and stable measurement results, in one embodiment, the measuring tool further comprises a first fastener 2, which is detachably connected to the clamp, inserted into the second clamping space and locks the positioning needle 3, ensuring the accurate position of the positioning needle 3 and accurate and reliable measurement results.
[0029] Optionally, in one embodiment, the first fastener 2 is a screw, which can be tightened to lock the positioning needle 3, making the operation convenient.
[0030] In one embodiment, the second clamping space is a through hole, and the positioning needle 3 and the probe of the dial gauge 7 are both columnar and arranged in the through hole.
[0031] In one embodiment, two second fasteners 4 are arranged on each clamp, and the two second fasteners 4 are arranged on the upper side and the lower side of the first clamping space respectively to connect and lock the dial gauge stem 1 and the first clamping space of the clamp.
[0032] Optionally, four second fasteners 4 are arranged on each clamp, and two second fasteners 4 are arranged on the upper side and the lower side of the first clamping space of each clamp respectively to connect and lock the dial gauge stem 1 and the first clamping space of the clamp.
[0033] In one embodiment, the second fastener 4 is a bolt or a screw to achieve detachable connection.
[0034] The first clamp 5 and the second clamp 6 of the measuring tool are detachably connected to form a first clamping space and a second clamping space, the watch stem 1 serves as a support reference, the watch stem 1 is connected with the two clamps, the second clamping space coaxial between the two clamps can be formed, the two second clamping spaces are respectively installed and positioned with the positioning needle 3 box measuring watch 7 body, and the probe of the measuring watch 7 is arranged opposite to the positioning needle 3. When measuring, first, the positioning needle 3 is positioned and marked with the zero point position of the dial gauge by using the standard gauge block, and then the positioning needle 3 is locked and fixed. Then the measuring tool is placed at the annular groove to be measured, the probe of the telescopic measuring watch 7 is stretched to pass through the interference structure and abut against the inner wall and the outer wall of the annular groove to be measured of the cylinder body with the positioning needle 3 respectively, and the numerical value of the measuring watch 7 is read, that is, the wall thickness value of the cylinder at the annular groove is obtained. The measuring tool can directly and flexibly stretch the probe into the annular groove area in the cylinder cavity for measurement, effectively avoids the interference of the protruding structure of the inner wall / outer wall, and takes the watch stem 1 as the support reference, so that the accuracy of the measured wall thickness value can be ensured, the wall thickness of the cylinder at the annular groove can be quickly measured and verified on site after processing, the compliance of the wall thickness of the cylinder at the annular groove can be determined, the out-of-tolerance products can be isolated, and the batch quality risk caused by processing can be avoided.
[0035] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the present disclosure.
[0036] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.
Claims
1. A measuring tool, characterized in that The measuring tool comprises: a table rod; two clamps, each of which comprises a first clamp and a second clamp, and the first clamp and the second clamp are matched to form a first clamping space and a second clamping space, and the table rod is arranged in the first clamping space and detachably connected with the clamp body; a detection piece comprising a positioning needle and a measuring table, the positioning needle is connected with the second clamping space of one of the clamps, the body of the measuring table is connected with the second clamping space of the other clamp, and the probe of the measuring table is opposite to the positioning needle.
2. The measurement tool of claim 1, wherein, The second clamping spaces of the two clamps are oppositely arranged.
3. The measurement tool of claim 1, wherein, Further comprising a first fastener, which is detachably connected with the clamp, and the first fastener is inserted into the second clamping space and locks the positioning needle.
4. The measurement tool of claim 3, wherein, The first fastener is a screw.
5. The measurement tool of claim 1, wherein, The second clamping space is a through hole, and the positioning needle and / or the probe of the measuring table are columnar and arranged in the through hole.
6. The measurement tool of claim 1, wherein, At least two second fasteners are arranged on each of the clamps, and the two second fasteners are arranged on the upper side and the lower side of the first clamping space respectively and lock the table rod and the first clamping space of the clamp.
7. The measurement tool of claim 1, wherein, The second fastener is a bolt or a screw.