KR101678029B1 - Air operated valve actuator simulating apparatus - Google Patents
Air operated valve actuator simulating apparatus Download PDFInfo
- Publication number
- KR101678029B1 KR101678029B1 KR1020150121553A KR20150121553A KR101678029B1 KR 101678029 B1 KR101678029 B1 KR 101678029B1 KR 1020150121553 A KR1020150121553 A KR 1020150121553A KR 20150121553 A KR20150121553 A KR 20150121553A KR 101678029 B1 KR101678029 B1 KR 101678029B1
- Authority
- KR
- South Korea
- Prior art keywords
- piston
- driver
- cylinder
- ring
- simulating
- Prior art date
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Valves (AREA)
- Fluid-Driven Valves (AREA)
Abstract
Description
The present invention relates to an air driven valve driver simulator, and more particularly, to an air driven valve driver simulator that evaluates the performance of an air driven valve actuator with changes in ambient temperature.
The plant uses a number of air operated valves to control the valves in areas where people can not be deployed. In particular, nuclear power plants control valves with air-driven valves in emergency situations, It is essential to prevent development.
Since Fukushima Nuclear Power Plant, there has been increased interest in whether air-operated valves operate in extreme environments, and air-operated valve performance evaluation methods have been devised to determine whether air-operated valves operate at high temperatures.
Korean Patent Registration No. 10-1527315 discloses an invention for testing the spring performance of an air actuator through a stem sensor and a displacement sensor, and Korean Patent Registration No. 10-1136211 discloses a force Sectional area of the air actuator is measured to measure the effective cross-sectional area of the air actuator. However, the present invention does not disclose an invention for evaluating the performance of the air drive valve that can occur in a high-temperature extreme environment.
Actuators for air-operated valves are essential for air-operated valves to operate, and most air-operated valve actuators contain key components of non-metallic materials that are susceptible to high temperatures. There is room for a problem. Accordingly, there is an increasing need for a performance evaluation device for an air-operated valve that can provide a high temperature environment capable of evaluating the performance of an air-driven valve and can detect a change in performance.
SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide an air-driven valve driver simulator for diagnosing performance of high-temperature O-rings used in an air-driven valve.
In the air drive valve driver simulation apparatus for evaluating the performance of the first O-rings and the second O-rings of different sizes, which are used in the air drive valve according to an embodiment of the present invention, The drive valve driver simulation apparatus includes a driver piston simulation section, a driver cylinder simulation section, a temperature control simulation section, and a measurement section, wherein the driver piston simulation section is configured such that one end is reciprocated in a first direction or a second direction opposite to the first direction Wherein the driver cylinder simulation unit covers one end of the driver piston simulation unit, the temperature control simulation unit covers the driver cylinder simulation unit and applies heat to the interior of the driver cylinder simulation unit, and the measurement unit detects a change in resistance to movement of the driver piston simulation unit do.
In one embodiment, the measuring unit measures a change in resistance to movement of the driver piston simulating unit, which is varied according to a state change due to hot hot air directly applied to the first O-ring and the second O-ring, The frictional force generated in the second O-ring can be evaluated.
In one embodiment, the first O-ring may be coupled to one end of the driver piston simulator and be disposed between the one end side of the driver piston simulator and the inner side of the driver cylinder simulator.
In one embodiment, the second O-ring is inserted into the upper center of the driver cylinder simulation section extending through the driver cylinder simulation section to a smaller size than the first O-ring and passing through the driver piston simulation section, Can be disposed between the inner side surfaces of the portions.
In one embodiment, the temperature control simulation unit may include a first chamber and a second chamber that are coupled to each other to seal one end of the driver cylinder simulation unit and the driver cylinder simulation unit, and inject high temperature hot air into the interior.
In one embodiment, the driver piston simulating part may include a piston which is formed by one side surface thereof contacting the inner surface of the driver cylinder simulating part and reciprocates in the first direction or the second direction.
In one embodiment, the first O-ring has an inner surface disposed in a recess recessed along a side surface of the piston so as to surround the piston and an outer surface protrude from the groove to closely contact the inner surface of the driver cylinder simulation portion.
In one embodiment, the driver piston simulator further comprises a valve stem and a drive device, wherein the valve stem has one end coupled to the upper center of the piston and the other end extending in a second direction, And the drive device may be formed at the other end of the valve stem to pull or push the valve stem.
In one embodiment, the second O-ring may be formed between the penetrating portion and the valve stem.
The air driven valve actuator simulator of the present invention is capable of evaluating the performance of the first O-ring and the second O-ring, which are coupled to the air drive valve, at room temperature or high temperature, And the performance of the first O-ring and the second O-ring can be evaluated.
Also, the cylinder flange and the cylinder body can be detachably attached to each other, so that the first O-ring can be easily attached to and detached from the piston, and the measuring unit can be mounted on the first O-ring and the second O-ring using a strain gage or a load cell. The friction generated in the O-ring can be measured.
When the piston is driven and reciprocally moved in the first direction or the second direction, the entire upper portion of the cylinder flange is integrally formed, and the piston flange is integrally formed with the piston flange, The durability against the pressure of the cylinder body is increased, and the lower part of the cylinder body is also advantageous against the pressure of the piston.
Between the cylinder flange and the cylinder body, an air passage hole is formed so that hot air generated by the temperature control simulator can be directly applied to the first O-ring and the second O-ring to change the temperature quickly.
The temperature control simulator can be separated into the first chamber and the second chamber so that the mounting of the first O-ring and the second O-ring is easy and uniform heat can be externally applied to the outside of the driver cylinder simulator through the hot air, It is possible to accurately evaluate the performance of the first and second O-rings.
1 is a schematic diagram showing a valve actuator according to the prior art.
2 is an exploded perspective view showing an air driven valve driver simulation apparatus according to an embodiment of the present invention.
FIG. 3 is a perspective view showing the combined structure of the air driven valve driver simulation apparatus of FIG. 2; FIG.
4 is a cross-sectional view showing a plane cut along the line A-A 'in Fig.
5 is an enlarged view showing the portion 'B' of FIG. 4 on an enlarged scale.
Hereinafter, an air drive valve driver simulation apparatus according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. While the present invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not limited to the disclosed embodiments. It is to be understood, however, that the invention is not intended to be limited to the particular forms disclosed, but on the contrary, is intended to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the invention. Like reference numerals are used for like elements in describing each drawing. The terms first, second, etc. may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another. The terminology used in this application is used only to describe a specific embodiment and is not intended to limit the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. In the present application, the term "comprises" or "comprising ", etc. is intended to specify that there is a stated feature, figure, step, operation, component, But do not preclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof.
Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in commonly used dictionaries are to be interpreted as having a meaning consistent with the contextual meaning of the related art and are to be interpreted as either ideal or overly formal in the sense of the present application Do not.
Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
1 is a schematic diagram showing a valve actuator according to the prior art.
1, the
The
For example, air-driven valves installed to control nuclear power plants of nuclear power plants are representative, and the
The
The
When the
Therefore, in order to ensure the stability and accuracy of the
2 is an exploded perspective view showing an air driven valve simulation apparatus according to an embodiment of the present invention. 3 is a perspective view showing the combined structure of the air driven valve simulation apparatus of FIG. 4 is a cross-sectional view showing a plane cut along the line A-A 'in Fig. 5 is an enlarged view showing the portion 'B' of FIG. 4 on an enlarged scale.
2 to 5, the air-driven
The actuator
The air drive valve
The first and second O-
Referring to FIG. 2, the actuator
One end of the
The upper portion of the
The lower portion of the
An air passage hole is formed between the
The first O-
The second O-
The temperature
The first O-
For example, when the first O-
Therefore, the first O-
The
4 and 5, the
The
Although not shown in the drawing, the thickness of the
Also, the thickness of the upper portion of the
The
Therefore, the first and second O-
The
According to embodiments of the present invention as described above, the air drive valve
The
The
The
It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the present invention as defined by the following claims. It can be understood that it is possible.
The air driven valve actuator simulator apparatus according to the present invention has industrial applicability that can be used in research centers, schools, and corporations.
100: air drive valve drive simulator 200: driver cylinder simulator
210: Cylinder flange 220: Cylinder body
230: support device 310: first o-ring
320: second O-ring 400: temperature control simulator
410: first chamber 420: second chamber
500: Actuator piston simulating part 510: Driving device
520: valve stem 530: piston
600:
Claims (11)
A driver piston simulating part which reciprocates once in a first direction or in a second direction opposite to the first direction;
A driver cylinder simulating part covering one end of the driver piston simulating part;
A temperature control simulator for covering the driver cylinder simulation part and applying heat to the interior of the driver cylinder simulation part; And
And a metering section for sensing a change in resistance to movement of the actuator piston simulating section.
The performance of the first O-ring and the second O-ring is measured by measuring a change in resistance to movement of the driver piston simulating part depending on a state change due to hot hot air directly applied to the first O-ring and the second O- Wherein the air-driven valve driver simulator includes:
Wherein the actuator is coupled to one end of the driver piston simulating part and is disposed between one end side of the driver piston simulating part and the inner side of the driver cylinder simulating part.
Wherein the driver piston simulation part is extended to the other end with a size smaller than the first O-ring and inserted into the upper center of the driver cylinder simulation part passing through the driver piston simulation part and disposed between the side surface of the driver piston simulation part and the inner side surface of the driver cylinder simulation part. Air driven valve actuator simulator.
And a first chamber and a second chamber which are coupled to each other to close one end of the driver piston simulation unit and the driver cylinder simulation unit and inject hot air of high temperature into the inside thereof.
A cylinder flange surrounding an upper portion and a portion of a side surface of the actuator piston simulating part; And
And a cylinder body surrounding a lower portion of the one end of the driver piston simulating unit and a part of the side surface of the driver piston simulating unit.
And a penetrating portion formed at the upper center of the cylinder flange and moving through the simulator piston portion,
Wherein a space through which air can pass between the cylinder flange and the cylinder body is formed so that hot air of high temperature is injected into the space through the space.
And a piston which is formed in contact with the inner surface of the cylinder body at one side and reciprocates in the first direction or the second direction.
Wherein the inner side surface is disposed in a depressed groove along the side surface of the piston so as to surround the piston and the outer side surface protrudes from the groove to closely contact the inner surface of the cylinder body.
A valve stem having one end coupled to the upper center of the piston and the other end extending in a second direction to pass through the penetration and the temperature control simulation; And
Further comprising a driving device formed at the other end of the valve stem to pull or push the valve stem.
And the valve stem is formed between the penetrating portion and the valve stem.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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KR1020150121553A KR101678029B1 (en) | 2015-08-28 | 2015-08-28 | Air operated valve actuator simulating apparatus |
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KR1020150121553A KR101678029B1 (en) | 2015-08-28 | 2015-08-28 | Air operated valve actuator simulating apparatus |
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KR101678029B1 true KR101678029B1 (en) | 2016-11-21 |
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KR1020150121553A KR101678029B1 (en) | 2015-08-28 | 2015-08-28 | Air operated valve actuator simulating apparatus |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200030931A (en) | 2018-09-13 | 2020-03-23 | 한국기계연구원 | Damage simulation system for a vessel |
KR102370248B1 (en) * | 2021-01-14 | 2022-03-04 | (주)수산인더스트리 | Method for calculating friction force of packing for valve |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101136211B1 (en) * | 2009-12-10 | 2012-04-17 | 한전케이피에스 주식회사 | Effective-area measurement for air-operated actuator |
KR101527315B1 (en) * | 2014-01-22 | 2015-06-09 | 한국수력원자력 주식회사 | Device for testing efficiency of spring equipped in air actuator |
-
2015
- 2015-08-28 KR KR1020150121553A patent/KR101678029B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101136211B1 (en) * | 2009-12-10 | 2012-04-17 | 한전케이피에스 주식회사 | Effective-area measurement for air-operated actuator |
KR101527315B1 (en) * | 2014-01-22 | 2015-06-09 | 한국수력원자력 주식회사 | Device for testing efficiency of spring equipped in air actuator |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20200030931A (en) | 2018-09-13 | 2020-03-23 | 한국기계연구원 | Damage simulation system for a vessel |
KR102370248B1 (en) * | 2021-01-14 | 2022-03-04 | (주)수산인더스트리 | Method for calculating friction force of packing for valve |
WO2022154170A1 (en) * | 2021-01-14 | 2022-07-21 | (주)수산인더스트리 | Method for calculating valve packing frictional force |
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