CN111156939B - Device and method for measuring main sealing surface of three-eccentric center butterfly valve - Google Patents
Device and method for measuring main sealing surface of three-eccentric center butterfly valve Download PDFInfo
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- CN111156939B CN111156939B CN201911396268.0A CN201911396268A CN111156939B CN 111156939 B CN111156939 B CN 111156939B CN 201911396268 A CN201911396268 A CN 201911396268A CN 111156939 B CN111156939 B CN 111156939B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
Abstract
The invention discloses a device and a method for measuring a main sealing surface of a three-eccentric butterfly valveMeasuring the reference surface; an equal-height block is arranged between the tool body and the measuring main body, so that a preset size h is formed between the contact reference bottom surface of the measuring contact in the measuring main body and the measuring reference surface of the valve body to be detected1A preset size h is formed between the axis of the measuring contact and the measuring reference surface of the valve body to be detected; adjusting the distance between the measuring contacts to make the measuring contacts tangent to the sealing surface of the valve body to be detected, and performing characteristic dimension L1And (6) measuring. The invention is not limited by the angle of the sealing surface of the valve with specific specification, thereby improving the universality and reducing the processing difficulty; the measuring contact can be calibrated before measurement, and the calibrated numerical value is brought into a conversion formula, so that the measuring precision is improved, and the cone vertex angle of the sealing surface can be verified.
Description
Technical Field
The embodiment of the invention relates to the technical field of measurement, in particular to a device and a method for measuring a main sealing surface of a three-eccentric center butterfly valve.
Background
The three-eccentric butterfly valve is used for regulating flow and carrying fluid in metallurgical, electric, petrochemical, water supply and drainage, municipal construction and other industrial pipes with medium temperature not higher than 425 deg.c. The triple eccentric butterfly valve not only absorbs the advantages of other butterfly valve products, but also avoids the defects of other butterfly valves, and is paid more and more attention by users and technicians. The triple eccentric butterfly valve can achieve zero leakage, is particularly suitable for being made into a large-caliber valve, and can replace a gate valve and a ball valve when being used as a block valve; when the valve is used for adjusting the flow, the valve can replace a heavy stop valve.
The sealing surface of the three-eccentric center butterfly valve is an oval cross section formed by beveling a cone. The workpiece is on the site of the processing equipment, and the online measurement is required. The conventional measuring tool measures the size of the sealing surface of the three-eccentric butterfly valve on line, has large error and can not meet the production requirement. The original measuring piece of the traditional special measuring tool mainly adopts a sample plate form, and the measurement is realized by the collinear of the original measuring piece shape and the local bus of the sealing surface to be measured. However, because the angles of the generatrices of the sealing surfaces of the valves with different specifications are different, the measuring tool is poor in universality. In addition, the processing of the measuring original is difficult, and the processing precision of the measuring original has great influence on the measuring precision.
Disclosure of Invention
Therefore, the embodiment of the invention provides a device and a method for measuring a main sealing surface of a three-eccentric butterfly valve, which aim to solve the problem of online measurement of the main sealing surface of the three-eccentric butterfly valve.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions: a three-eccentric butterfly valve main sealing surface measuring device comprises a tool body, a valve body to be detected, a measuring guide column, a height block and a measuring main body; the valve body to be detected is arranged on the surface of the tool body, the measuring guide column is arranged on the surface of the tool body, the equal-height blocks are arranged on the surface of the tool body, the measuring guide column and the equal-height blocks are respectively positioned in a channel of the valve body to be detected, the measuring guide column is contacted with the equal-height blocks, and a measuring reference surface of the valve body to be detected, the bottom surface of the measuring guide column and the bottom surfaces of the equal-height blocks are positioned on the same plane; the lower end of the measuring main body extends into a channel of the valve body to be detected and is in contact with the top ends of the equal-height blocks, measuring contacts are connected to two sides of the measuring main body respectively, and the measuring contacts are in contact with a sealing surface of the valve body to be detected.
As a preferred scheme of the three-eccentric butterfly valve main sealing surface measuring device, the tool body is an inclined disc-shaped tool, the surface of the inclined disc-shaped tool is a plane, and a measuring reference surface of the valve body to be detected, the bottom surface of the measuring guide column and the bottom surface of the equal-height block are positioned on the same plane and attached to the surface of the inclined disc-shaped tool.
As the preferred scheme of the measuring device for the main sealing surface of the three-eccentric butterfly valve, the measuring contact is a ball head, the measuring contact is tangent to the sealing surface of the valve body to be detected, and the dimension h is formed between the axis of the measuring contact and the measuring reference surface of the valve body to be detected.
As a preferred scheme of the measuring device for the main sealing surface of the three-eccentric center butterfly valve, the measuring main body comprises a ruler body, one end of the ruler body is connected with a fixed handle, and the lower end of the ruler body is connected with a movable handle; the fixed handle and the movable handle are parallel to each other.
As a preferred scheme of the three-eccentric butterfly valve main sealing surface measuring device, the measuring contact comprises a first measuring head and a second measuring head, the first measuring head is connected to the side portion of the fixed handle, the second measuring head is connected to the side portion of the movable handle, and the axes of the first measuring head and the second measuring head are overlapped.
As a preferable proposal of the main sealing surface measuring device of the three-eccentric center butterfly valve, the main sealing surface measuring deviceThe side parts of the fixed handle and the movable handle are respectively provided with a contact side reference surface, and the bottom parts of the fixed handle and the movable handle are respectively provided with a contact reference bottom surface; a dimension h is formed between the contact reference bottom surface and the measurement reference surface of the valve body to be detected1。
The embodiment of the invention also provides a method for measuring the main sealing surface of the three-eccentric center butterfly valve, which comprises the following steps:
the positions of a contact side reference surface and a contact reference bottom surface of a measuring contact in the measuring main body are limited through the tool body and the measuring guide column, so that the measuring main body is positioned on the measuring reference surface of the valve body to be detected;
an equal-height block is arranged between the tool body and the measuring main body, so that a preset size h is formed between the contact reference bottom surface of the measuring contact in the measuring main body and the measuring reference surface of the valve body to be detected1A preset size h is formed between the axis of the measuring contact and the measuring reference surface of the valve body to be detected;
adjusting the distance between the measuring contacts to make the measuring contacts tangent to the sealing surface of the valve body to be detected, and performing characteristic dimension L1And (6) measuring.
As the preferred scheme of the method for measuring the main sealing surface of the three-eccentric center butterfly valve, the characteristic dimension L1Comprises the following steps:
in the formula (I); alpha is a half angle of the conical top of the sealing surface of the valve body to be detected; beta is an included angle between a measuring reference surface of the valve body to be detected and a rotary center of the sealing surface; d1And D2Measuring the diameter of the ball head of the contact; l is2The maximum distance between the outer edges of the two measuring contacts; l is3The ball center spacing of the two measurement contacts is measured.
As the preferred scheme of the method for measuring the main sealing surface of the three-eccentric center butterfly valve, the characteristic dimension L1Comprises the following steps:
in the formula (I);alpha is a half angle of the conical top of the sealing surface of the valve body to be detected; beta is an included angle between a measuring reference surface of the valve body to be detected and a rotary center of the sealing surface; d1And D2Measuring the diameter of the ball head of the contact; l is3The ball center spacing of the two measurement contacts is measured.
As a preferred scheme of the measuring method of the main sealing surface of the three-eccentric butterfly valve, the half angle alpha of the conical top of the sealing surface of the valve body to be detected is verified through the preset size h value between the axes of the two groups of measuring contacts and the measuring reference surface of the valve body to be detected.
The invention uses the tool body and the measuring guide post in the processing process to limit the lateral reference surface of the measuring device, and limits the measuring contact on the characteristic plane of the valve body to be detected; meanwhile, the base reference surface of the measuring main body is limited by the specific size of the equal-height block between the tool body and the measuring main body in the machining process, so that the axis of the measuring contact and the measuring reference surface form a target size h; the characteristic dimension is measured by the tangency of the measuring contact and the sealing surface of the valve body to be detected. The technical scheme provided by the invention is not limited by the angle of the sealing surface of the valve with a specific specification, and the universality is improved. The size of the sealing surface of the valve is measured by adopting the spherical surface, so that the processing difficulty of a measuring element is reduced; meanwhile, the measuring contact can be calibrated before measurement, and the calibrated numerical value is brought into a conversion formula, so that the measurement precision is further improved; when the width of the sealing surface is wide, the verification of the cone vertex angle of the sealing surface of the three-eccentric center butterfly valve can be realized; the measured data is simple to process, and the online measurement of the workpiece is facilitated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, should still fall within the scope of the present invention.
Fig. 1 is a schematic structural diagram of a main sealing surface measuring device of a triple offset butterfly valve provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a main measurement body of the main seal surface measuring device for the triple offset butterfly valve provided in embodiment 1 of the present invention;
fig. 3 is a schematic diagram illustrating a principle of a main sealing surface measuring method of a triple offset butterfly valve according to embodiment 2 of the present invention;
fig. 4 is a schematic diagram of a half-angle calibration principle in the main sealing surface measuring method of the triple offset butterfly valve provided in embodiment 2 of the present invention.
In the figure: 1. a tool body; 2. a valve body to be detected; 3. measuring a guide post; 4. equal-height blocks; 5. a measurement subject; 6. measuring a reference surface; 7. a measuring probe; 701. a first measuring head; 702. a second measuring head; 8. a sealing surface; 9. a ruler body; 10. a fixed handle; 11. a movable handle; 12. a contact-side reference plane; 13. the contact datum bottom surface.
Detailed Description
The present invention is described in terms of particular embodiments, other advantages and features of the invention will become apparent to those skilled in the art from the following disclosure, and it is to be understood that the described embodiments are merely exemplary of the invention and that it is not intended to limit the invention to the particular embodiments disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1 and 2, a three-eccentric center butterfly valve main sealing surface measuring device is provided, which comprises a tool body 1, a valve body 2 to be detected, a measuring guide post 3, an equal-height block 4 and a measuring main body 5; the valve body 2 to be detected is arranged on the surface of the tool body 1, the measuring guide column 3 is arranged on the surface of the tool body 1, the equal-height blocks 4 are arranged on the surface of the tool body 1, the measuring guide column 3 and the equal-height blocks 4 are respectively positioned in a channel of the valve body 2 to be detected, the measuring guide column 3 is contacted with the equal-height blocks 4, and the measuring reference surface 6 of the valve body 2 to be detected, the bottom surface of the measuring guide column 3 and the bottom surfaces of the equal-height blocks 4 are positioned on the same plane; the lower end of the measuring main body 5 extends into a channel of the valve body 2 to be detected and is in contact with the top ends of the equal-height blocks 4, measuring contacts 7 are connected to two sides of the measuring main body 5 respectively, and the measuring contacts 7 are in contact with a sealing surface 8 of the valve body 2 to be detected.
In the embodiment of the invention, the tool body 1 is an inclined disc-shaped tool, the surface of the inclined disc-shaped tool is a plane, and the measuring reference surface 6 of the valve body 2 to be detected, the bottom surface of the measuring guide column 3 and the bottom surface of the equal-height block 4 are positioned on the same plane and attached to the surface of the inclined disc-shaped tool. An included angle is formed between the bottom surface and the working surface of the inclined disc-shaped tool, and components in the machining process of the three-eccentric center butterfly valve can be directly utilized, so that the design difficulty of measuring the components is reduced, and the inclined disc-shaped tool is convenient to use.
In the embodiment of the invention, the measuring main body 5 comprises a ruler body 9, one end of the ruler body 9 is connected with a fixed handle 10, and the lower end of the ruler body 9 is connected with a movable handle 11; the fixed handle 10 and the movable handle 11 are parallel to each other. The side parts of the fixed handle 10 and the movable handle 11 are respectively provided with a contact side reference surface 12, and the bottom parts of the fixed handle 10 and the movable handle 11 are respectively provided with a contact reference bottom surface 13; a dimension h is formed between the contact datum bottom surface 13 and the measuring datum surface 6 of the valve body 2 to be detected1。
Specifically, the measuring contact 7 is a ball head, the measuring contact 7 is tangent to a sealing surface 8 of the valve body 2 to be detected, and a dimension h is formed between the axis of the measuring contact 7 and a measuring reference surface 6 of the valve body 2 to be detected. The measuring probe 7 comprises a first measuring head 701 and a second measuring head 702, the first measuring head 701 is connected to the side of the fixed handle 10, the second measuring head 702 is connected to the side of the movable handle 11, and the axes of the first measuring head 701 and the second measuring head 702 are coincident. The invention adopts the ball head measuring contact 7, is not limited by the angle of the sealing surface 8 of the valve with specific specification, and improves the universality. The invention adopts the spherical surface to measure the size of the sealing surface 8 of the valve body 2 to be detected, thereby reducing the processing difficulty of a measuring element. Meanwhile, the spherical measuring contact 7 can be calibrated before measurement, and the calibrated value is brought into a conversion formula, so that the measurement precision is further improved.
The invention uses the tool body 1 and the measuring guide post 3 in the processing process to limit the lateral reference surface of the measuring device, and limits the measuring contact 7 on the characteristic plane of the valve body 2 to be detected; meanwhile, the base reference surface of the measuring main body 5 is limited by the specific size of the equal-height block 4 between the tool body 1 and the measuring main body 5 in the machining process, so that the axis of the measuring contact 7 and the measuring reference surface 6 form a target size h; the characteristic dimension is measured by the tangency of the measuring contact 7 and the sealing surface 8 of the valve body 2 to be detected. The technical scheme provided by the invention is not limited by the angle of the sealing surface 8 of the valve with a specific specification, and the universality is improved. The size of the valve sealing surface 8 is measured by adopting a spherical surface, so that the processing difficulty of a measuring element is reduced; meanwhile, the measuring contact 7 can be calibrated before measurement, and the calibrated value is brought into a conversion formula, so that the measurement precision is further improved; when the sealing surface 8 is wide, the cone vertex angle of the sealing surface 8 of the three-eccentric center butterfly valve can be verified; the measured data is simple to process, and the online measurement of the workpiece is facilitated.
Example 2
Referring to fig. 3, an embodiment of the present invention further provides a method for measuring a main sealing surface of a triple offset butterfly valve, including the following steps:
the positions of a contact side reference surface 12 and a contact side reference bottom surface 13 of a measuring contact 7 in a measuring main body 5 are limited through a tool body 1 and a measuring guide column 3, so that the measuring main body 5 is positioned on a measuring reference surface 6 of a valve body 2 to be detected;
an equal-height block 4 is arranged between the tool body 1 and the measuring body 5, so that a preset size h is formed between a contact datum bottom surface 13 of a measuring contact 7 in the measuring body 5 and a measuring datum surface 6 of a valve body 2 to be detected1A preset size h is formed between the axis of the measuring contact 7 and the measuring reference surface 6 of the valve body 2 to be detected;
the distance between the measuring contacts 7 is adjusted so that the measuring contacts 7 and the sealing surface 8 of the valve body 2 to be testedTangent, making a characteristic dimension L1And (6) measuring.
Specifically, the characteristic dimension L1Comprises the following steps:
in the formula (I); alpha is a half angle of the conical top of the sealing surface 8 of the valve body 2 to be detected; beta is an included angle between a measuring reference surface 6 of the valve body 2 to be detected and a rotary center of a sealing surface 8; d1And D2For measuring the ball diameter of the contact 7; l is2The maximum distance between the outer edges of the two measuring contacts 7; l is3The center-to-center distance of the two measuring heads 7 is measured.
Furthermore, the characteristic dimension L1It can also be expressed as:
in the formula (I); alpha is a half angle of the conical top of the sealing surface 8 of the valve body 2 to be detected; beta is an included angle between a measuring reference surface 6 of the valve body 2 to be detected and a rotary center of a sealing surface 8; d1And D2For measuring the ball diameter of the contact 7; l is3The center-to-center distance of the two measuring heads 7 is measured. In particular, the maximum distance L between the contacts 7 is measured by calibration3Can convert the target size L1. The field operation can be illustrated using theoretical calculations or by software with a size driving function.
In the embodiment of the invention, the half angle alpha of the conical top of the sealing surface 8 of the valve body 2 to be detected is verified through the preset size h value between the axes of the two groups of measuring contacts 7 and the measuring reference surface 6 of the valve body 2 to be detected.
Specifically, as shown in fig. 4, when the width of the sealing surface 8 is wide, the measurement can be performed under two different sets of h, so as to realize the half angle α check of the conical top of the sealing surface 8 of the three-eccentric center butterfly valve, and the specific steps are as follows:
guide the measurement to the columns 3 and h1The height equal-height blocks 4 are placed at the preset connecting position of the inclined disc-shaped tool body 1 in the processing process to limit the measuring main body 5 to the valve body 2 to be detectedOn the measuring reference surface 6; while the axis of the measuring feeler 7 forms a certain dimension h with the measuring reference surface 6.
By adjusting the distance between the measuring contacts 7, i.e. the distance between the first measuring head 701 and the second measuring head 702, the spherical surface of the measuring contacts 7 is tangent to the sealing surface 8 of the valve body 2 to be tested.
Measuring the distance L between the first measurement head 701 and the second measurement head 70231。
Guide the measurement to the columns 3 and h1And the height block 4 with the height of + delta h and the like is placed at the preset connecting position of the inclined disc-shaped tool body 1 in the machining process, and the axis of the measuring contact 7 and the measuring reference surface 6 of the valve body 2 to be detected form a specific size h + delta h. The repeated measurement results in another set of distances L between the first measuring head 701 and the second measuring head 70232. The following dimensional relationships exist:
L31-L32＝L302+L301＝Δh(cot(180°-β-α)+cot(β-α))
in the formula, beta, delta h and L31、L32The half angle alpha of the conical top of the sealing surface 8 of the three-eccentric butterfly valve can be reversely obtained.
Although the invention has been described in detail above with reference to a general description and specific examples, it will be apparent to one skilled in the art that modifications or improvements may be made thereto based on the invention. Accordingly, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. A three-eccentric center butterfly valve main sealing surface measuring device is characterized by comprising a tool body (1), a valve body to be detected (2), a measuring guide column (3), an equal-height block (4) and a measuring main body (5); the valve body (2) to be detected is arranged on the surface of the tool body (1), the measuring guide column (3) is arranged on the surface of the tool body (1), the equal-height block (4) is arranged on the surface of the tool body (1), the measuring guide column (3) and the equal-height block (4) are respectively positioned in a channel of the valve body (2) to be detected, the measuring guide column (3) is contacted with the equal-height block (4), and a measuring reference surface (6) of the valve body (2) to be detected, the bottom surface of the measuring guide column (3) and the bottom surface of the equal-height block (4) are positioned on the same plane; the lower end of the measuring main body (5) extends into a channel of the valve body to be detected (2) and is in contact with the top end of the equal-height block (4), measuring contacts (7) are connected to two sides of the measuring main body (5) respectively, and the measuring contacts (7) are in contact with a sealing surface (8) of the valve body to be detected (2);
the measuring contact (7) is a ball head, the measuring contact (7) is tangent to the sealing surface (8) of the valve body to be detected (2), and a dimension h is formed between the axis of the measuring contact (7) and the measuring reference surface (6) of the valve body to be detected (2); the measuring main body (5) comprises a ruler body (9), one end of the ruler body (9) is connected with a fixed handle (10), and the lower end of the ruler body (9) is connected with a movable handle (11); the fixed handle (10) and the movable handle (11) are parallel to each other;
the measuring contact (7) comprises a first measuring head (701) and a second measuring head (702), the first measuring head (701) is connected to the side of the fixed handle (10), the second measuring head (702) is connected to the side of the movable handle (11), and the axes of the first measuring head (701) and the second measuring head (702) are coincident;
the side parts of the fixed handle (10) and the movable handle (11) are respectively provided with a contact side reference surface (12), and the bottoms of the fixed handle (10) and the movable handle (11) are respectively provided with a contact reference bottom surface (13); a dimension h is formed between the contact datum bottom surface (13) and the measuring datum surface (6) of the valve body (2) to be detected1。
2. The main sealing surface measuring device of the triple offset butterfly valve according to claim 1, characterized in that the tool body (1) is a tilted disc tool, the surface of the tilted disc tool is a plane, and the measuring reference surface (6) of the valve body (2) to be tested, the bottom surface of the measuring guide post (3) and the bottom surface of the equal-height block (4) are positioned on the same plane and attached to the surface of the tilted disc tool.
3. A method for measuring a main sealing surface of a triple offset butterfly valve, which uses the main sealing surface measuring device of the triple offset butterfly valve according to any one of claims 1 to 2, comprising the steps of:
the positions of a contact side reference surface (12) and a contact side reference bottom surface (13) of a measuring contact (7) in a measuring main body (5) are limited through a tool body (1) and a measuring guide column (3), so that the measuring main body (5) is positioned on a measuring reference surface (6) of a valve body (2) to be detected;
an equal-height block (4) is arranged between the tool body (1) and the measuring main body (5) to ensure that a preset size h is formed between a contact datum bottom surface (13) of a measuring contact (7) in the measuring main body (5) and a measuring datum surface (6) of the valve body (2) to be detected1A preset size h is formed between the axis of the measuring contact (7) and the measuring reference surface (6) of the valve body (2) to be detected;
adjusting the distance between the measuring contacts (7) to make the measuring contacts (7) tangent to the sealing surface (8) of the valve body (2) to be detected, and performing characteristic dimension L1And (6) measuring.
4. The method of claim 3, wherein the characteristic dimension L is a dimension of the main seal surface of the triple offset butterfly valve1Comprises the following steps:
in the formula (I); alpha is a half angle of the conical top of the sealing surface (8) of the valve body (2) to be detected; beta is an included angle between a measuring reference surface (6) of the valve body (2) to be detected and a rotation center of a sealing surface (8); d1And D2For measuring the ball diameter of the contact (7); l is2The maximum distance between the outer edges of the two measuring contacts (7); l is3The distance between the centers of sphere of the two measuring contacts (7) is measured.
5. The method of claim 3, wherein the characteristic dimension L is a dimension of the main seal surface of the triple offset butterfly valve1Comprises the following steps:
in the formula (I); alpha is a half angle of the conical top of the sealing surface (8) of the valve body (2) to be detected; beta is an included angle between a measuring reference surface (6) of the valve body (2) to be detected and a rotation center of a sealing surface (8);D1and D2For measuring the ball diameter of the contact (7); l is3The distance between the centers of sphere of the two measuring contacts (7) is measured.
6. A method for measuring the main sealing surface of a triple offset butterfly valve according to claim 3, characterized in that the half angle α of the conical top of the sealing surface (8) of the valve body (2) to be tested is verified by means of the value of the predetermined dimension h between the axes of the two sets of measuring contacts (7) and the measuring reference surface (6) of the valve body (2) to be tested.
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| CN201911396268.0A CN111156939B (en) | 2019-12-30 | 2019-12-30 | Device and method for measuring main sealing surface of three-eccentric center butterfly valve |
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| CN201911396268.0A CN111156939B (en) | 2019-12-30 | 2019-12-30 | Device and method for measuring main sealing surface of three-eccentric center butterfly valve |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102679834A (en) * | 2012-05-31 | 2012-09-19 | 无锡宝牛阀业有限公司 | Three-eccentric butterfly valve measuring tool |
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| CN201476741U (en) * | 2009-09-02 | 2010-05-19 | 中国石油天然气集团公司 | Special caliper for measuring large-end diameter of taper hole of oil drill female adaptor |
| CN202074906U (en) * | 2011-05-13 | 2011-12-14 | 天津市中海上达机械制造有限公司 | Measuring device for measuring large end of taper hole |
| CN203037196U (en) * | 2012-12-05 | 2013-07-03 | 柳州欧维姆机械股份有限公司 | Inner cone inclination steel ball measuring gauge |
| CN104476328B (en) * | 2014-11-04 | 2017-01-11 | 无锡市亚迪流体控制技术有限公司 | Machining measurement device of sealing ring for triple eccentric butterfly valve |
| CN204944340U (en) * | 2015-09-30 | 2016-01-06 | 江南阀门有限公司 | A kind of special vernier caliper measuring the U-shaped sealing pair internal diameter size of butterfly valve |
| CN106051295B (en) * | 2016-07-13 | 2018-10-19 | 王子文 | A kind of design method of three-eccentric-butterfly-valve closure size |
| CN207113775U (en) * | 2017-07-18 | 2018-03-16 | 英诺威阀业有限公司 | A kind of valve seal conical surface measuring apparatus of diameter |
| CN108489673B (en) * | 2018-04-28 | 2023-11-03 | 苏州纽威阀门股份有限公司 | Measuring device for sealing surface of three-eccentric butterfly valve and measuring method for tightness |
| CN108759626B (en) * | 2018-06-15 | 2020-08-28 | 邵帅 | Valve seal conical surface diameter measuring instrument |
| CN110455150B (en) * | 2019-09-17 | 2021-08-31 | 天津祥嘉流体控制系统有限公司 | Three eccentric butterfly valve sealing washer machining dimension on-line measuring tool |
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| CN102679834A (en) * | 2012-05-31 | 2012-09-19 | 无锡宝牛阀业有限公司 | Three-eccentric butterfly valve measuring tool |
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