KR101861960B1 - Safety Valve Popping Test Apparatus For Power And Chemical Plant - Google Patents
Safety Valve Popping Test Apparatus For Power And Chemical Plant Download PDFInfo
- Publication number
- KR101861960B1 KR101861960B1 KR1020170051375A KR20170051375A KR101861960B1 KR 101861960 B1 KR101861960 B1 KR 101861960B1 KR 1020170051375 A KR1020170051375 A KR 1020170051375A KR 20170051375 A KR20170051375 A KR 20170051375A KR 101861960 B1 KR101861960 B1 KR 101861960B1
- Authority
- KR
- South Korea
- Prior art keywords
- pressure
- safety valve
- hydraulic pump
- data processing
- processing means
- Prior art date
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Classifications
-
- 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
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0075—For recording or indicating the functioning of a valve in combination with test equipment
- F16K37/0083—For recording or indicating the functioning of a valve in combination with test equipment by measuring valve parameters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/14—Testing gas-turbine engines or jet-propulsion engines
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The present invention relates to a flapping test apparatus for a safety valve for a power plant and a chemical plant, and it is an object of the present invention to provide a flapping test apparatus for a safety valve for a power plant and a chemical plant, Provided is a safety flapping test apparatus for a power plant and a chemical plant which can increase the reliability by preventing the flapping test in an unstable environment by stopping the drive when the vibration inside the workplace exceeds the set value or the atmospheric pressure is out of the setting range.
Description
The present invention relates to a safety flapping test apparatus for a power plant and a chemical plant, and more particularly, to a flapping test apparatus for a safety flap test apparatus for a power plant and a chemical plant, The present invention relates to a flapping test apparatus for safety.
In general, safety valves are installed in pressure vessels and piping of industrial facilities such as power plants, chemical plants, refineries, incinerators, etc., to safeguard devices and facilities even if abnormal pressure occurs in each component.
Such a safety valve is used in various industrial fields such as a power plant operated by high-pressure and low-pressure gas, a high-pressure gas production facility, a petrochemical facility, a boiler and the like. It is stipulated to install mandatory by high pressure gas related regulations in order to prevent explosion or cracking of device or equipment in advance to protect devices and equipment.
On the other hand, a large-scale plant facility includes a large number of valves for controlling and blocking the amount of fluid, and the valves used in the power plant are usually designed to reduce or broaden the cross- A gate valve and a glove valve to prevent backflow of fluid and a check valve to flow only in one direction and a valve that limits the maximum pressure. (Safety Vent) to prevent damage to the equipment or piping by lowering the pressure to below the set pressure. When the pressure of the circuit reaches the set pressure, part or all of the fluid is discharged to keep the pressure in the circuit below the set pressure. And a relief valve (Relief Valve) which is a pressure control valve.
In order to confirm whether or not the safety valve that plays an important role in the operation of the large-scale facility is popping, it is necessary to confirm whether or not the valve is periodically popped. And then tested.
In this case, when the safety test is performed on the safety side, there is a problem that the safety side is separated from the site and the test side is transported to another test site equipped with the test equipment, and then the test is carried again.
As a matter of course, a device capable of directly testing in situ without separating such a safety valve has been proposed in, for example, Japanese Patent Application No. 10-0864273 (Reference 1), Registration No. 10-0898318 (Reference 2) and the like.
The set pressure test apparatus of the safety valve proposed in
The safety valve ejection test apparatus proposed in
In the case of
Furthermore, even though the test apparatuses proposed in the
Accordingly, in order to solve the problems of the conventional art as described above, a popping test is carried out on-line for a safety valve installed and operated in a facility or an apparatus of a power plant or a chemical plant, , And to provide a safety flapping test device for power plants and chemical plants that can stop the test when vibration and atmospheric pressure changes, which can affect the flapping test, to provide reliability in the flapping test.
In addition, the present invention tests whether or not the safety valve is set at a predetermined pressure without separating the safety valve from a facility or an apparatus of a power plant or a chemical plant, and controls the hydraulic pump so as to linearly induce the applied pressure. And a safety flapping test apparatus for a power plant and a chemical plant for stopping the driving of the hydraulic pump.
In order to solve such a technical problem,
A hydraulic pump having a control valve for transmitting hydraulic pressure to a hydraulic jack for raising an operation rod of a safety valve installed in a workshop of a power plant and a chemical plant and controlling the flow rate; A pressure sensor for measuring the discharge pressure of the hydraulic pump; A load cell for converting a load applied between the operation rod of the safety valve and the hydraulic jack into an electrical load signal; A vibration sensor for detecting vibration in the work space; An atmospheric pressure sensor for measuring an atmospheric pressure inside the workplace; Wherein the control unit controls the hydraulic pump so that the discharge pressure sensed by the pressure sensor linearly reaches a predetermined applied pressure, converts the pressure signal into pressure when the load signal is inputted from the load cell, And data processing means for stopping the driving of the hydraulic pump when the vibration of the sensor exceeds the set value or the atmospheric pressure is out of the setting range.
The data processing unit controls the hydraulic pump to linearly reach a predetermined applied pressure when the discharge pressure of the hydraulic pump sensed through the pressure sensor is input. When a load signal of the load cell is input, To calculate a measured pressure and display it as a graph; And the data processing means displays vibration and atmospheric pressure information of the vibration sensor and the atmospheric pressure sensor.
The data processing means stores the measured pressure in a memory at a preset time interval, compares the measured pressures in order, and when a maximum value is found, it determines that the measured pressure is a fapping pressure, and the fapping pressure is output together with the graph .
The data processing means sequentially compares the measured pressures stored in the memory, selects a large value as the temporary pumping pressure, finalizes the final temporary pumping pressure as the pumping pressure, and displays the numerical value together with the graph.
The data processing means controls the hydraulic pump by setting a value obtained by subtracting the operation pressure from a set pressure at which the safety valve is popped, when the operation pressure of the facility or the apparatus equipped with the safety valve is inputted.
The safety flapping test apparatus according to the present invention can control the discharge pressure of the hydraulic pump linearly while performing the flapping test without separating the safety valve installed at the power plant and the chemical plant from the facility or the apparatus in the field, Or when the atmospheric pressure is out of the set range, the driving is stopped to prevent the flapping test in an unstable environment, thereby improving the reliability.
According to the present invention, the pumping test is carried out without separating the safety valve from the facility or the apparatus in the field, and the discharge pressure of the hydraulic pump is sensed through the pressure sensor and reflected thereon so that the discharge pressure of the hydraulic pump is linearly It is possible not only for the novice who is not skilled to test the safety valve easily but also to stop the operation of the hydraulic pump when the operation load sensing means detects the flapping so that the failure of the safety valve or the load cell or the hydraulic pump due to the excessive pressure input .
FIG. 1 is an installation configuration diagram of a safety flapping test apparatus for a power plant and a chemical plant according to an embodiment of the present invention.
2 is a control block diagram of a safety flapping test apparatus for a power plant and a chemical plant according to an embodiment of the present invention.
3 is a test graph of a safety flapping test apparatus for a power plant and a chemical plant according to another embodiment of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments 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.
1 and 2, the safety flap testing device for a safety valve for a power plant and a chemical factory according to the present invention is provided with a
The safety flapping test apparatus for a power plant and a chemical plant according to the present invention is for testing whether a
At this time, the safety flapping test apparatus according to the present invention can be applied to a power plant or selectively applied to a chemical plant, and even if it is not separately described in the claims, it can be applied to various industries such as a power plant, a chemical plant, It is to be understood that the present invention is also applicable to a facility.
Hereinafter, the constitution of each part of the present invention will be described in detail.
First, the
The
To this end, the
The
The
At this time, the control signal of the
Therefore, the interface means 50 includes an A / D converter for converting an analog signal into a digital signal and a D / A converter for converting a digital signal into an analog signal, and also performs a function of signal distribution.
The interface means 50 is connected to the data processing means 40. The data processing means 40 may be a laptop computer or a tablet PC which can be carried on the field as well as a normal industrial computer. In particular, when the interface means 40 is a notebook or a tablet PC, the data processing means 40 can be connected by a USB cable and can be easily connected by a plug and play (P & P) method.
A limit switch which is an operating rod sensing means 35 is installed on the
Therefore, when the
On the other hand, the vibration and atmospheric pressure inside the workplace where the safety valve (1) of the power plant and the chemical plant are installed may affect the pumping test, so if the vibration in the workplace exceeds the set value or the atmospheric pressure is out of the set range, Measurement is also very important.
Accordingly, the present invention further includes a
In this case, the
The vibration and atmospheric pressure information of the surroundings equipped with such a safety valve is displayed together with the pressure graph.
At this time, the
The data processing means 40 controls the
In this case, the vibration setting value may be 60 dB (V), which is an evaluation vibration level according to a factory noise and vibration emission allowance standard. Therefore, when the vibration processing value is 60 dB (V) or less, , And when it exceeds 60 dB (V), it is determined that the abnormal situation is present and the driving of the
If the data processing means 40 determines that the pressure is within the range of 0.8 to 1.2 atmospheres, the data processing means 40 determines that the pressure is outside of the range of 0.8 to 1.2 atmospheres. If the pressure is less than 0.8 atmospheres or exceeds 1.2 atmospheres And stops the driving of the
Hereinafter, the operation of the safety flapping test apparatus for a power plant and a chemical plant according to the present invention will be described with reference to FIGS. 1 to 3. FIG.
According to the above configuration, the inspector inputs the set pressure of the facility or equipment in which the
In this case, when the discharge pressure of the
At this time, for example, when the set applied pressure is 100 kg /
The hydraulic pressure is applied to the
When the load signal of the
At this time, the graph of the measured pressure is stored in the
On the other hand, there is a large error in confirming the graph with the naked eye and securing the numerical value of the popping pressure. The data processing means 40 stores the measured pressure in the
The operating pressure may be input to the data processing means 40 beforehand so as to reflect the operation pressure of the facility or the apparatus provided with the
On the other hand, the data processing means 40 analyzes the extracted test data to calculate the tapping pressure. At this time, when the load signal of the
If the vibration sensed by the
The measured pressure calculated through the data processing means 40 is output as a graph of time as shown in FIG. As shown in FIG. 3, the pressures measured in the set time intervals are sequentially compared, and when the maximum value is found, the pressure is determined as the papping pressure (P). During such pressure measurement, for example, the pressure graph is stopped from time point B when the vibration or atmospheric pressure information measured by the
Of course, after a set time of, for example, 2 to 3 seconds after this point, a message window requesting remeasure is popped up to correspond.
While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary,
1: Safety valve 2: Operational rod
10:
12: Hydraulic jack 20: Pressure sensor
30: load cell 35: working load sensing means
37: Vibration sensor 39: Atmospheric pressure sensor
40: data processing means 42: memory
50: Interface means
Claims (5)
The data processing means 40 controls the hydraulic pump 10 to linearly reach a preset applied pressure when the discharge pressure of the hydraulic pump 10 sensed through the pressure sensor 20 is input, The data processing means 40 calculates the measured pressure by dividing the measured pressure by the area of the safety valve 1 when the load signal of the load cell 30 is inputted and displays the data on the graph, And atmospheric pressure information;
The data processing means (40) stores the measured pressure in the memory (42) at a set time interval, compares the measured pressures in order, and if the maximum value is found, determines the maximum value as the pumping pressure, Is output together with the graph;
The data processing means 40 sequentially compares the measured pressures stored in the memory 42 and selects a larger value as the temporary puffing pressure, finalizes the final temporary papping pressure as the papping pressure, displays the numerical value together with the graph;
The data processing means 40 sets a value obtained by subtracting the operation pressure from a set pressure at which the safety valve 1 is popped, as an applied pressure, when the operation pressure of the facility or the apparatus equipped with the safety valve 1 is input, );
The jig 4 provided with the hydraulic jack 12 is installed on the safety valve 1 and the hydraulic jack 12 is installed on the safety valve 1. [ And the load cell (30) is mounted to the adapter (3).
Priority Applications (1)
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KR1020170051375A KR101861960B1 (en) | 2017-04-21 | 2017-04-21 | Safety Valve Popping Test Apparatus For Power And Chemical Plant |
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KR1020170051375A KR101861960B1 (en) | 2017-04-21 | 2017-04-21 | Safety Valve Popping Test Apparatus For Power And Chemical Plant |
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Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100191411B1 (en) * | 1996-06-19 | 1999-06-15 | 최인호 | Middle-velocity test for dignosing a car by expert system |
KR100864273B1 (en) * | 2007-12-04 | 2008-10-17 | 주식회사 조산 | The configuration pressure testing apparatus of the safety vent |
-
2017
- 2017-04-21 KR KR1020170051375A patent/KR101861960B1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100191411B1 (en) * | 1996-06-19 | 1999-06-15 | 최인호 | Middle-velocity test for dignosing a car by expert system |
KR100864273B1 (en) * | 2007-12-04 | 2008-10-17 | 주식회사 조산 | The configuration pressure testing apparatus of the safety vent |
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