CN110940512A - Gas valve applicability testing method and testing device thereof - Google Patents
Gas valve applicability testing method and testing device thereof Download PDFInfo
- Publication number
- CN110940512A CN110940512A CN201911290274.8A CN201911290274A CN110940512A CN 110940512 A CN110940512 A CN 110940512A CN 201911290274 A CN201911290274 A CN 201911290274A CN 110940512 A CN110940512 A CN 110940512A
- Authority
- CN
- China
- Prior art keywords
- valve
- gas
- test
- tested
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
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
- G01M13/00—Testing of machine parts
- G01M13/003—Machine valves
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
A method for testing the adaptability of gas valve includes such steps as ① installing test valve, ② regulating the internal environment of valve, ③ regulating the external environment of valve, ④ testing the working performance, air tightness and torque variation of highest temp and humidity, ⑤ testing the working performance, air tightness and torque variation of lowest temp and humidity, ⑥ collecting the force and displacement data of gas valve, and stopping the test of relative position when the collected force is greater than or equal to predefined threshold value or the air tightness of valve is greater than limit value, ⑦ obtaining quantitative adaptive force and its performance variation curve.
Description
The technical field is as follows:
the invention belongs to the field of safety test of gas facilities, and particularly relates to a method and a device for testing applicability of a gas valve.
Background art:
after decades of operation, part of gas system facilities are in overruns, so that numerous potential safety hazards are brought, the normal operation of urban infrastructure is influenced, and the daily life of urban residents is threatened. The gas valve is used as an important node in a gas system, and the performance reliability of the gas valve restricts the overall safety of the gas system.
The current national standard specifies general requirements, mechanical properties, physical properties, test methods and the like of gas valves, wherein hydrostatic strength, tightness tests and operating torque of mechanical property test items of finished valve products are mandatory test items. Under the prior art, hydrostatic strength, sealing test and operation torque detection can be realized, for example, 201610173510.8 'endurance test box for gas valve and endurance test method for gas valve', however, the above technology and device can only guarantee the initial performance of the valve product to be qualified. At present, aiming at the problem of long-term quality reliability of a gas valve, a technical method and a device for measuring and evaluating the working condition and the environmental suitability of the valve in the long-term operation process are still in a blank stage.
The invention content is as follows:
the invention aims to provide a method for testing the applicability of a gas valve, which can ensure that the applicability of the gas valve under the condition of normal work can be measured and quantitatively evaluated, and the common endurance test is redesigned under various testing working condition environments such as hot, wet and gas-carrying media, so that the aims of scientific flow, short testing time, reasonable connection of the front and rear testing sequences, test gas saving, safety and reliability can be achieved.
The invention also aims to provide a testing device used in the method for testing the applicability of the gas valve, which is used for adjusting the opening of the valve based on a dynamic driving device in a system under the conditions of set temperature, humidity and gas operation working conditions in cooperation with a circulating air pump to form different working condition flow rates, and simultaneously obtaining quantized adaptability and a performance change curve thereof through a gas pressure and moment monitoring system on a system pipeline.
As conceived above, the technical scheme of the invention is as follows: a gas valve applicability testing method is characterized by comprising the following steps: comprises the following steps:
① installing test valves, placing one or more gas valves to be tested on the test station, placing the test station in the hot and humid environment box, connecting the gas inlet of the gas valve to be tested to the corresponding gas inlet pipe, and connecting the gas outlet to the corresponding gas outlet pipe penetrating through the side wall of the hot and humid environment box;
② regulating the environment inside the valve by regulating the space inside the gas valve through the gas supply system to simulate the actual running state;
③ regulating valve environment, namely regulating temperature or humidity to a specified temperature or humidity condition by using a hot and humid environment box, and then setting the highest temperature and highest humidity, the lowest temperature and lowest humidity and the retention time of high and low temperatures of the hot and humid environment box according to the working environment of the valve;
④ testing the working performance, air tightness and moment variation of the highest temperature and humidity, supplying fuel gas to the fuel gas valve to be tested through the air inlet pipe when the temperature in the hot and humid environment box reaches the designated high temperature and humidity, collecting the moment information of the fuel gas valve to be tested in different opening states after the gas supply system is stable, thereby forming a process of the applicability test of the fuel gas valve to be tested, completing the collection and statistics of specific values of torque, temperature, air pressure and test times through the PLC industrial personal computer, suspending the circulation of the gas supply system after one process is completed, recording the air pressure, then restarting the circulation, and sending an alarm when the moment or the air tightness is larger than the set threshold value;
⑤ testing the working performance, air tightness and moment variation of the lowest temperature and humidity, when the temperature in the hot and humid environment box reaches the designated low temperature and low humidity, supplying gas to the gas valve to be tested through the gas inlet pipe, collecting the moment information of the gas valve to be tested in different opening degree states after the gas supply system is stable, thereby forming a process of the applicability test of the gas valve to be tested, and completing the collection and statistics of specific values of torque, temperature, air pressure and test times through the PLC industrial personal computer, when a process is completed, suspending the circulation of the gas supply system, recording the air pressure, then restarting the circulation, and when the moment or the air tightness is larger than the set threshold value, sending an alarm;
⑥ collecting the force and displacement data of the gas valve to be tested, and stopping the test operation of the corresponding station when the collected force is greater than or equal to the preset threshold value or the collected valve airtightness exceeds the limit value;
⑦ obtaining quantized adaptability and its performance variation curve, drawing a curve graph with frequency and airtightness as coordinate axes, evaluating the airtightness performance variation curve, establishing different valve opening and torquering curves, and comprehensively evaluating the environmental applicability of the gas valve.
The testing device used in the gas valve applicability testing method comprises an intensity testing system, an air source air supply system and a testing station, wherein the intensity testing system is used for a valve static pressure intensity experiment; the testing station is arranged in the hot and humid environment box and comprises a driving mechanism, and a torque and displacement sensor is arranged on the driving mechanism and connected with a servo motor and a gas valve to be tested;
the strength test system comprises a reciprocating pump, a pressure stabilizing water tank, a post-valve control ball valve and a discharge valve, wherein the reciprocating pump and the pressure stabilizing water tank are connected and are both connected to a liquid (gas) inlet pipe of the gas valve to be tested, a liquid (gas) outlet pipe of the gas valve to be tested is connected with the post-valve control ball valve, and the post-valve control ball valve is connected with the discharge valve; air supply gas supply system includes the air supply valve, the bleeding valve, three way solenoid valve, the buffer tank, circulating air pump and PLC industrial computer, the air supply valve is installed on the air supply pipe, the exit linkage of air supply valve is on the feed liquor (gas) pipe of the gas valve that awaits measuring, the bleeding valve is installed on with the bleeding pipeline, the bleeding pipe connection is on the play liquid (gas) pipe of the gas valve that awaits measuring, the bleeding pipeline is connected respectively to three-terminal of three way solenoid valve, circulating air pump and buffer tank A, buffer tank A and buffer tank B are connected respectively to the circulating air pump, wherein buffer tank B and air supply union coupling, the PLC industrial computer and air supply valve, the circulating pump, three way solenoid valve and actuating mechanism are connected.
The relief pressure value of the relief valve is not less than 5kPa and not more than 1.6 MPa.
The relief pressure value of the relief valve is not less than 5kPa and not more than 10 MPa.
The invention has the following advantages and positive effects:
1. the testing method provided by the invention can be used for analyzing a series of normal working states corresponding to the limit working conditions by adjusting the operating working condition of the gas valve to be tested and testing the working performance of the valve under the conditions of highest temperature, lowest temperature, highest humidity and lowest humidity, quantitatively evaluating the air tightness performance and moment parameter change of the gas valve and measuring the applicability and performance change trend of the gas valve to different environments.
2. The testing method provided by the invention takes the opening degree of the gas valve to be tested as a state option to form a process of testing the applicability of the gas valve, and finally, the information acquisition and statistics of specific numerical values of parameters such as process torque, temperature, air pressure, testing times and the like are completed through the PLC industrial personal computer.
3. The testing device provided by the invention can realize the output of different operating pressures on the same pipeline under different testing conditions, and maintain the air supply circulation of the pipeline system when testing the operating condition of the same valve, so that the valve is in the operating condition with the gas medium for a long time.
4. The testing device provided by the invention can realize dynamic fuel gas performance according to the operating ring component of the fuel valve. And (4) according to the test requirements or the actual working environment, carrying out performance measurement of various operating pressures and external environments, and quantifying the adaptive capacity and the performance change curve of the valve.
5. The testing device provided by the invention can simulate the working condition of the gas valve. According to the working conditions or test requirements of different pipe networks, the closed-loop regulation of constant pressure or continuously-changed pressure, constant mixed gas flow and running pressure output on the same conveying pipeline can be realized, and the pressure and flow speed of the gas valve during working can be simulated.
6. The testing device provided by the invention can be used for carrying out hydrostatic strength and sealing tests and detection of operation torque according to the standard test requirements.
7. The testing device provided by the invention can realize the applicability test of the gas valve, can dynamically simulate the internal and external environments of the valve in real time, and can quantitatively determine the performance of the gas valve under different opening degrees.
Description of the drawings:
fig. 1 is a system diagram of the gas valve applicability testing apparatus and method according to the present invention.
Fig. 2 is a schematic view of a functional assembly of a driving mechanism of the gas valve applicability testing device of the present invention.
Wherein: 1-reciprocating pump, 2-pressure gauge, 3-pressure stabilizing water tank, 4-water system valve, 5-air source, 6-air source valve, 7-driving mechanism, 8-gas valve to be tested, 9-hot and humid environment tank, 10-valve rear control valve, 11-diffusing device, 12-discharging device, 13-three-way electromagnetic valve, 14, 15-buffer tank, 16-circulating air pump, 17-PLC industrial personal computer, 18-moment and displacement sensor and 19-servo motor.
The specific implementation mode is as follows:
a gas valve suitability testing method comprises the following steps:
(1) and (3) testing valve installation:
the testing device comprises a driving mechanism, wherein a torque and a displacement sensor are arranged on the driving mechanism, and the driving mechanism is connected with a servo motor and the gas valve to be tested. And the air inlet of the gas valve to be tested is connected to the corresponding air inlet pipe, and the air outlet is connected with the corresponding air outlet pipe penetrating through the side wall of the hot and humid environment box.
(2) Adjusting the environment in the valve: the valve inner ring is adjusted through the air source medium air supply system to simulate the actual running state.
(3) Adjusting the environment outside the valve:
and regulating the temperature or the humidity to a specified temperature or humidity condition by using the hot and humid environment box. According to the working environment of the valve, the highest temperature and humidity, the lowest temperature and humidity, and the retention time of the high temperature and the low temperature of the hot and wet environment box are set.
(4) And carrying out working performance, air tightness and moment change tests of the highest temperature and the highest humidity.
When the temperature in the hot and humid environment box reaches specified high temperature and high humidity, the PLC industrial personal computer is utilized to open the air pump and the air supply source valve, fuel gas is supplied to a valve arranged on a test station (test valve) through the air inlet pipe, after the air supply system is stabilized, the PLC industrial personal computer sends working information to the driving mechanism to command the rotating mechanism to act, torque acquisition information in the valve action process is preset to be options of four states of 0 degree, 30 degrees, 60 degrees and 90 degrees, the four states form a process of applicability test of the gas valve, meanwhile, the acquisition and statistics of specific numerical values of parameters such as torque, temperature and test times are completed, after one process is completed, the circulation of the air supply system is suspended, the air pressure is recorded, and then the circulation is restarted. When the moment or the air tightness and the like are larger than the set threshold value, an alarm is given, and meanwhile, the test of the corresponding test station (test valve) is informed. And (5) completing the air tightness and moment change tests of the highest temperature and the highest humidity.
(5) And carrying out working performance, air tightness and moment change tests of the lowest temperature and the lowest humidity.
When the temperature in the hot and humid environment box reaches the designated low temperature and low humidity, the PLC industrial personal computer is utilized to open the air pump and the air supply source valve, fuel gas is supplied to a valve arranged on a testing station (testing valve) through the air inlet pipe, after the air supply system is stabilized, the PLC industrial personal computer sends working information to the driving mechanism to command the action of the rotating mechanism, torque acquisition information in the valve action process is preset to be options of four states of 0 degree, 30 degrees, 60 degrees and 90 degrees, the four states form a process of applicability testing of the fuel gas valve, the acquisition and statistics of specific numerical values of parameters such as torque, temperature and testing times are completed simultaneously, after one process is completed, the circulation of the air supply system is suspended, the air pressure is recorded, and then the circulation is restarted. When the moment or the air tightness and the like are larger than the set threshold value, an alarm is given, and meanwhile, the test of the corresponding test station (test valve) is informed. And completing the air tightness and moment change tests of the lowest temperature and the lowest humidity.
(6) The force and displacement acting on the gas valve to be tested on the driving mechanism are collected through the torque and displacement sensors arranged on the driving mechanism, and when the collected force is larger than or equal to a preset threshold value or the collected valve airtightness performance exceeds a limit value, the testing work of the corresponding station is stopped.
(7) And obtaining the quantized adaptive capacity and the performance change curve thereof.
And drawing a curve chart with the times and the air tightness as coordinate axes, evaluating an air tightness performance change curve, establishing different valve opening and torquering curves, and comprehensively evaluating the environmental applicability of the gas valve.
See figures 1-2: the testing device used by the method for testing the applicability of the gas valve comprises an intensity testing system, an air source air supply system and a testing station, wherein the intensity testing system is used for a valve static pressure intensity experiment.
1. The test station is arranged in the hot and humid environment box and comprises a driving mechanism, wherein a torque and a displacement sensor are installed on the driving mechanism and are connected with the servo motor and the gas valve to be tested. The hot and wet environment box is used for heating or refrigerating a gas valve to be tested of the test station and adjusting the humidity so as to simulate the working environment. The moment and displacement sensor collects action data of the driving mechanism acting on the gas valve to be tested, and the collected data are transmitted to the PLC industrial personal computer, and the rotation of the driving mechanism of the gas valve to be tested is driven by the servo motor.
2. The strength test system for the valve static pressure strength test comprises a reciprocating pump, a pressure stabilizing water tank, a post-valve control ball valve and a discharge valve, wherein the reciprocating pump and the pressure stabilizing water tank are connected and are both connected to a liquid (gas) inlet pipe of a gas valve to be tested, a liquid (gas) outlet pipe of the gas valve to be tested is connected with the post-valve control ball valve, and the post-valve control ball valve is connected with the discharge valve;
3. air supply gas supply system includes the air supply valve, the bleeding valve, three way solenoid valve, the buffer tank, circulating air pump and PLC industrial computer, the air supply valve is installed on the air supply pipe, the exit linkage of air supply valve is on the feed liquor (gas) pipe of the gas valve that awaits measuring, the bleeding valve is installed on with the bleeding pipeline, the bleeding pipe connection is on the play liquid (gas) pipe of the gas valve that awaits measuring, the bleeding pipeline is connected respectively to three-terminal of three way solenoid valve, circulating air pump and buffer tank A, buffer tank A and buffer tank B are connected respectively to the circulating air pump, wherein buffer tank B and air supply union coupling, the PLC industrial computer and air supply valve, the circulating pump, three way solenoid valve and actuating mechanism are connected.
The relief pressure value of the relief valve is as follows: the releasing pressure is less than or equal to 6.4MPa and less than or equal to 3 kPa. The relief pressure value of the relief valve is as follows: the releasing pressure is less than or equal to 25MPa and is less than or equal to 3 kPa.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A gas valve applicability testing method is characterized by comprising the following steps: comprises the following steps:
① installing test valves, placing one or more gas valves to be tested on the test station, placing the test station in the hot and humid environment box, connecting the gas inlet of the gas valve to be tested to the corresponding gas inlet pipe, and connecting the gas outlet to the corresponding gas outlet pipe penetrating through the side wall of the hot and humid environment box;
② regulating the environment inside the valve by regulating the space inside the gas valve through the gas supply system to simulate the actual running state;
③ regulating valve environment, namely regulating temperature or humidity to a specified temperature or humidity condition by using a hot and humid environment box, and then setting the highest temperature and highest humidity, the lowest temperature and lowest humidity and the retention time of high and low temperatures of the hot and humid environment box according to the working environment of the valve;
④ testing the working performance, air tightness and moment variation of the highest temperature and humidity, supplying fuel gas to the fuel gas valve to be tested through the air inlet pipe when the temperature in the hot and humid environment box reaches the designated high temperature and humidity, collecting the moment information of the fuel gas valve to be tested in different opening states after the gas supply system is stable, thereby forming a process of the applicability test of the fuel gas valve to be tested, completing the collection and statistics of specific values of torque, temperature, air pressure and test times through the PLC industrial personal computer, suspending the circulation of the gas supply system after one process is completed, recording the air pressure, then restarting the circulation, and sending an alarm when the moment or the air tightness is larger than the set threshold value;
⑤ testing the working performance, air tightness and moment variation of the lowest temperature and humidity, when the temperature in the hot and humid environment box reaches the designated low temperature and low humidity, supplying gas to the gas valve to be tested through the gas inlet pipe, collecting the moment information of the gas valve to be tested in different opening degree states after the gas supply system is stable, thereby forming a process of the applicability test of the gas valve to be tested, and completing the collection and statistics of specific values of torque, temperature, air pressure and test times through the PLC industrial personal computer, when a process is completed, suspending the circulation of the gas supply system, recording the air pressure, then restarting the circulation, and when the moment or the air tightness is larger than the set threshold value, sending an alarm;
⑥ collecting the force and displacement data of the gas valve to be tested, and stopping the test operation of the corresponding station when the collected force is greater than or equal to the preset threshold value or the collected valve airtightness exceeds the limit value;
⑦ obtaining quantized adaptability and its performance variation curve, drawing a curve graph with frequency and airtightness as coordinate axes, evaluating the airtightness performance variation curve, establishing different valve opening and torquering curves, and comprehensively evaluating the environmental applicability of the gas valve.
2. A test apparatus for use in a gas valve suitability test method according to claim 1, characterized in that: the device comprises a strength test system, an air source air supply system and a test station, wherein the strength test system is used for a valve static pressure strength test; the testing station is arranged in the hot and humid environment box and comprises a driving mechanism, and a torque and displacement sensor is arranged on the driving mechanism and connected with a servo motor and a gas valve to be tested; the strength test system comprises a reciprocating pump, a pressure stabilizing water tank, a post-valve control ball valve and a discharge valve, wherein the reciprocating pump and the pressure stabilizing water tank are connected and are both connected to a liquid (gas) inlet pipe of the gas valve to be tested, a liquid (gas) outlet pipe of the gas valve to be tested is connected with the post-valve control ball valve, and the post-valve control ball valve is connected with the discharge valve; air supply gas supply system includes the air supply valve, the bleeding valve, three way solenoid valve, the buffer tank, circulating air pump and PLC industrial computer, the air supply valve is installed on the air supply pipe, the exit linkage of air supply valve is on the feed liquor (gas) pipe of the gas valve that awaits measuring, the bleeding valve is installed on with the bleeding pipeline, the bleeding pipe connection is on the play liquid (gas) pipe of the gas valve that awaits measuring, the bleeding pipeline is connected respectively to three-terminal of three way solenoid valve, circulating air pump and buffer tank A, buffer tank A and buffer tank B are connected respectively to the circulating air pump, wherein buffer tank B and air supply union coupling, the PLC industrial computer and air supply valve, the circulating pump, three way solenoid valve and actuating mechanism are connected.
3. A test apparatus for use in the gas valve suitability test method according to claim 2, wherein: the relief pressure value of the relief valve is not less than 5kPa and not more than 1.6 MPa.
4. A test apparatus for use in the gas valve suitability test method according to claim 2, wherein: the relief pressure value of the relief valve is not less than 5kPa and not more than 10 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911290274.8A CN110940512A (en) | 2019-12-16 | 2019-12-16 | Gas valve applicability testing method and testing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911290274.8A CN110940512A (en) | 2019-12-16 | 2019-12-16 | Gas valve applicability testing method and testing device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110940512A true CN110940512A (en) | 2020-03-31 |
Family
ID=69910718
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911290274.8A Pending CN110940512A (en) | 2019-12-16 | 2019-12-16 | Gas valve applicability testing method and testing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110940512A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560237A (en) * | 2020-12-03 | 2021-03-26 | 中国市政工程华北设计研究总院有限公司 | Method and system for rapidly testing service life of gas rubber pipe |
| CN115950628A (en) * | 2023-03-10 | 2023-04-11 | 中科艾尔(北京)科技有限公司 | Manual valve durability test device and test method thereof |
-
2019
- 2019-12-16 CN CN201911290274.8A patent/CN110940512A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112560237A (en) * | 2020-12-03 | 2021-03-26 | 中国市政工程华北设计研究总院有限公司 | Method and system for rapidly testing service life of gas rubber pipe |
| CN115950628A (en) * | 2023-03-10 | 2023-04-11 | 中科艾尔(北京)科技有限公司 | Manual valve durability test device and test method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110940512A (en) | Gas valve applicability testing method and testing device thereof | |
| CN211652060U (en) | Gas valve applicability testing arrangement | |
| CN105387886A (en) | Ball valve dynamic characteristic parameter test system and test method | |
| CN201531405U (en) | Oil pump analogue flow test device | |
| CN204783953U (en) | Energy -conserving test device of synthesis of solenoid valve and pneumatic cylinder reliability | |
| CN109443662A (en) | A kind of fluidic medium valve tiny leakage test device and method | |
| CN202835964U (en) | Automatic addition device for refrigerant of air conditioner | |
| CN104895871A (en) | Comprehensive and energy-saving testing device and method for reliability of electromagnetic valves and hydraulic cylinders | |
| CN105675221A (en) | System and method for measuring low-temperature sealing specific pressure performance parameters of sealing material | |
| CN113137409B (en) | Electromagnetic reversing valve test method in ultrahigh pressure environment | |
| CN204405319U (en) | A kind of wheel box pump valve high-low temperature tester | |
| CN102169043A (en) | System for detecting gas leakage | |
| CN113250947A (en) | Fuel cell air compressor durability test system and method | |
| CN111189596A (en) | Gas relay sealing performance testing device and testing method | |
| CN201749013U (en) | Air tightness detector of automobile expansion valve | |
| CN111678239B (en) | Quantitative method for additional refrigerant, processor and air conditioner | |
| CN103728438B (en) | The automatic air pressure control method that petroleum sneeze-point is measured | |
| CN201259357Y (en) | Air conditioner matching device | |
| CN117516823A (en) | Tightness detection equipment for valve processing | |
| CN111366354A (en) | System and method for testing and evaluating vibration characteristics of components in valve in non-contact measurement mode | |
| CN203719853U (en) | Leakage detection head and condenser online leakage detection device | |
| CN112414719B (en) | Self-circulation closed type turbine part test system | |
| CN210834055U (en) | Valve leakage water-free detection system | |
| CN111076907A (en) | Device for testing sealing performance, pressure resistance and opening pressure of automobile electromagnetic valve | |
| CN201772996U (en) | Device for determining optimization parameters of thermal expansion valve of air-conditioning system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |