CN105890882B - A method of measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate - Google Patents
A method of measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate Download PDFInfo
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- CN105890882B CN105890882B CN201610209127.3A CN201610209127A CN105890882B CN 105890882 B CN105890882 B CN 105890882B CN 201610209127 A CN201610209127 A CN 201610209127A CN 105890882 B CN105890882 B CN 105890882B
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- 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
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Abstract
A method of measuring air inlet and exhaust valve exhaust performance, step when aqueous vapor is alternate：Tested air inlet and exhaust valve is arranged on left testboard.Closing pressure-reducing constant pressure valve, check-valves, air intake control valve, left aqueous vapor shares control valve, right aqueous vapor shares control valve and water inlet control valve.Water inlet pipe water filling into tank is inflated.Adjustment pressure-reducing constant pressure valve outlet pressure is 0.05 ~ 0.10MPa.Tested valve inflation of the gas circuit to the left on testboard is opened, checks whether the big exhaust outlet of tested valve is vented.Water inlet control valve is opened again and closes air intake control valve, ensures that the instruction of tested valve inlet pressure gauge in 0.03 ~ 0.05MPa, checks whether the big exhaust outlet of tested valve closes.It opens air intake control valve and simultaneously closes off water inlet control valve, ensure tested valve inlet pressure tabular value in 0.03 ~ 0.05MPa.If the big exhaust outlet of tested valve can automatically turn on exhaust, it is believed that a large amount of degassing functions, this test method are easy to operate automatically when alternate with aqueous vapor.
Description
Technical field
The invention belongs to engineering construction water supply, drainage system professions, are related to the performance test methods field of air inlet and exhaust valve, are
A method of air inlet and exhaust valve exhaust performance is measured when aqueous vapor is alternate, especially suitable for feedwater piping combined high-speed into row
Air valve performance test.
Background technology
Air inlet and exhaust valve is that one kind again can be fast when realizing Quick air-discharge in pipeline blank pipe water-filling and generating negative pressure in pipeline
The device of fast air inlet, it is provided simultaneously with large and small port, the micro-air that can assemble in discharge line under operating pressure,
It is mainly used for alleviating or eliminating long distance water transfer project water hammer due to cavities collapsing caused by due to negative pressure, it has also become long distance water transfer work
Important equipment in journey.
According to Ministry of Construction's professional standard《Feedwater piping Combined type air inlet》（CJT 217-2013）, producer's production
Air inlet and exhaust valve after examination needs to make a service test after qualification, can be applied to Practical Project.According to CECS193:2005《City
Town water supply long distance water transfer pipe（Canal）Road engineering technology regulation》, according to《Urban water supply technological progress development plan in 2010
And the year two thousand twenty long-range objectives》To Long-distance Pipeline for Water Conveyance air inlet and exhaust valve performance requirement, as that " should have if air inlet and exhaust valve
Under any type fluidised form can rapid, high volume exhaust ", " air inlet and exhaust valve size exhaust outlet accomplish inflation open high speed exhaust,
Water-filling is closed water-tight ", " when between positive pressure water gas phase a large amount of high speed exhausts and buffer closings " etc., and incorporation engineering actual needs,
Design apparatus of the present invention and method.
Invention content
Go out during can simulating long distance water transfer the object of the present invention is to provide a kind of air inlet and exhaust valve performance test methods
Under existing a variety of unfavorable operating modes, the main working performance of air inlet and exhaust valve can be tested.
The technical solution adopted is that：
A method of measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate, it is characterised in that include the following steps：
Tested air inlet and exhaust valve is arranged on left testboard.
Close pressure-reducing constant pressure valve, check-valves, air intake control valve, left aqueous vapor shares control valve, right aqueous vapor shares control valve and
Water inlet control valve.
1. from water inlet pipe water filling into gas storage water tank, water injection rate is about 1/4 volume of tank body.
2. being inflated again from air inlet pipe into gas storage water tank, air pressure in tank is made to reach 0.4 ~ 0.5MPa.
3. adjustment pressure-reducing constant pressure valve outlet pressure is 0.05 ~ 0.10MPa.
4. opening check-valves, air intake control valve, left aqueous vapor successively shares control valve, the tested valve on testboard fills to the left
Gas, checks whether the big exhaust outlet of tested valve is vented.
5. and then air intake control valve is progressively closed off while opening water inlet control valve again, controlled valve action steadily to connect
It is continuous, mutually coordinated, ensure the instruction of tested valve inlet pressure gauge within the scope of 0.03 ~ 0.05MPa, the water-filling in this way into tested valve,
Check whether the big exhaust outlet of tested valve closes.
6. being again turned on air intake control valve, water inlet control valve is simultaneously closed off, and be gradually opened draining control valve, controlled valve
Stable and continuous, mutually coordinated is wanted in action, ensures tested valve inlet pressure tabular value within the scope of 0.03 ~ 0.05MPa.
At this point, the water surface is gradually reduced in tested valve, gas is gradually filled with valve body, and the big exhaust outlet of tested valve can automatically turn on
Exhaust, you can think the tested valve have aqueous vapor it is alternate when a large amount of degassing functions automatically.
If big exhaust outlet cannot automatically turn on exhaust, it is a large amount of when aqueous vapor is alternate to can determine that the air inlet and exhaust valve does not have
Degassing function.
For tested valve inlet pressure tabular value within the scope of 0.03 ~ 0.05MPa, the water surface can drop to the left liquid level below tested valve
Meter top can be seen that the water surface from left liquid level gauge.
7., 4. ~ process 6. carry out altogether three times, according to test result three times judge tested valve whether have aqueous vapor it is alternate when
Automatic a large amount of degassing functions.
A kind of device that the method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate uses, including water storage gas storage dress
It sets, exhaust apparatus, drainage arrangement and test device.
Water storage caisson includes gas storage water tank, water inlet pipe, air inlet pipe and vacuum tube.
Gas storage water tank middle and lower part is fixedly connected with water inlet pipe, and air inlet pipe and vacuum tube are arranged at gas storage water tank top.
Air inlet tube end connects gas storage water tank pressure vacuum gauge, and vacuum tube end connects gas storage water tank electric contact vacuum
Pressure gauge.
Exhaust apparatus includes the first straight tube, bend pipe and reducer pipe.
First straight tube one end connects gas storage water tank, and the first straight tube other end connects the one end for the bend pipe being bent downwards,
The other end of bend pipe passes through check-valves connecting short section by one end of pressure-reducing constant pressure valve connecting reducing pipe, the other end of reducer pipe
One end.
The sectional area that reducer pipe connects pressure-reducing constant pressure valve side is more than the sectional area that reducer pipe connects check-valves side.
Drainage arrangement includes the second straight tube, the second three-way connection and draining control valve.
One end of second straight tube is connected with gas storage water tank.
Second mouthful of connection of the other end of the second straight tube and the second three-way connection.
The first of second three-way connection is connected with draining control valve.
Water inlet control valve is equipped between the third mouth and the first of the first three-way connection of second three-way connection.
Test device includes connector, the first three-way connection, left reducer pipe and left bend pipe.
The first that the other end of pipe nipple passes through air intake control valve jointing.
The third mouth of first three-way connection connects the left bend pipe upwardly extended, the left bend pipe left flange of connection suitable for reading, as a left side
Testboard.
One end of second mouthful of left reducer pipe of connection of the first three-way connection.The other end of left reducer pipe is shared by left aqueous vapor
Second mouthful of control valve jointing.
The sectional area that left reducer pipe connects the first three-way connection side shares control valve less than the left aqueous vapor of left reducer pipe connection
The sectional area of side.
Left bend pipe top is equipped with left tested valve inlet pressure gauge, left tested valve import vacuum meter, left tested valve flow sensing
Device and left tested valve differential pressure pick-up.
First straight tube is horizontally disposed, is arranged in gas storage water tank side middle and upper part.
Second straight tube is horizontally disposed, is arranged in gas storage water tank side middle and lower part.
The reducer pipe top is equipped with safety valve.
The connector is additionally provided with third mouth, and the third mouth of connector shares control valve by right aqueous vapor and connects right reducer pipe
One end, the other end of right reducer pipe connect the right bend pipe upwardly extended, and right bend pipe is suitable for reading to be connected with right flange, and right flange is as right
Testboard.
Right reducer pipe connects right aqueous vapor and shares the sectional area of control valve side connects right bend pipe side more than right reducer pipe
Sectional area.
Right bend pipe top is equipped with right tested valve inlet pressure gauge, right tested valve import vacuum meter, right tested valve flow sensing
Device and right tested valve differential pressure pick-up.
The left bend pipe is equipped with left liquid level gauge.
Right bend pipe is equipped with right liquid level gauge.
The volume 20m3 of gas storage water tank, water inlet pipe connect tap water, and air inlet pipe connects air compressor, vacuum tube connection
Vacuum pump, gas storage water tank pressure vacuum gauge（Positive and negative pressure can be surveyed）, gas storage water tank electric contact pressure vacuum gauge（It can survey positive and negative
Pressure）.
Exhaust apparatus has the first straight tube（DN600）, flange（DN600）, bend pipe（DN600）, pressure-reducing constant pressure valve（DN600）,
Pressure-reducing constant pressure valve pressure gauge, pressure-reducing constant pressure valve vacuum meter, reducer pipe, safety valve（DN150, adjusting release stress 0.6MPa）, only
Return valve（DN400）, air intake control valve（Butterfly valve DN400）And pipe nipple（DN400）Deng.
Drainage arrangement has the second straight tube（DN200）, flange（DN200）, water inlet control valve（Butterfly valve DN200）, the second threeway
Connector（DN100）, draining control valve（Butterfly valve DN100）Deng.
Test device includes connector（DN400）, the first three-way connection（DN200）, left reducer pipe, left aqueous vapor share control valve
（Butterfly valve DN400）, right aqueous vapor share control valve（Butterfly valve DN400）, right reducer pipe, left bend pipe（DN200）, right bend pipe, flange
（DN150-DN300）, left testboard, right testboard, two tested valve inlet pressure gauges, two tested valve import vacuum meters and two
A flow sensor etc..
It is above-mentioned air compressor, vacuum tube, each flange, each butterfly valve, check-valves, safety valve, each pressure gauge, each
The devices such as a vacuum meter, sensor are known technology.
Tap water pours gas storage water tank from water inlet pipe, and pressed gas is charged into gas storage water tank, gas storage water storage by air inlet pipe
Gas is extracted out by vacuum tube in tank.
Gas in gas storage water tank enters pressure-reducing constant pressure valve by the first straight tube, bend pipe, passes through the whole of pressure-reducing constant pressure valve
Enter test device by reducer pipe, check-valves, pipe nipple, air intake control valve, connector after fixed.Safety valve is that occur in exhaust apparatus
It is used when abnormal.
Flanged joint, the second three-way connection is used to be also connected with draining control valve between second straight tube and the second three-way connection,
Butterfly valve between second three-way connection and the first three-way connection of test device（That is water inlet control valve）Connection.
Water in gas storage water tank passes through the second straight tube（Can be that three sections of pipes are formed by connecting）, water inlet control valve, the second threeway
Connector, the first three-way connection enter test device.Draining control valve controls the discharge of drainage arrangement superfluous water.
First three-way connection of test device and left reducer pipe, the first three-way connection and left bend pipe, right reducer pipe and the right side are curved
It is all made of flanged joint between pipe, left bend pipe and left testboard, right bend pipe and right testboard, is butterfly between connector and left reducer pipe
Valve（Left aqueous vapor shares control valve）, it is butterfly valve between connector and right reducer pipe（Right aqueous vapor shares control valve）.
Left and right tested valve inlet pressure gauge, left and right tested valve import vacuum meter and left and right flow sensor connect respectively
Left and right bend pipe top is connected on close to left and right test station.
Present apparatus detection method can also be：
First, it measures air inlet and exhaust valve and plays ball pressure in a large amount of exhausts, air inlet and exhaust valve is arranged in right testboard at this time.
1. being vented water in gas storage water tank.
2. opening air intake control valve, inflated into gas storage water tank with air compressor, make tank body atmospheric pressure reach 0.4 ~
0.5MPa。
3. it is respectively 0.02MPa, 0.06MPa, 0.12MPa, 0.4MPa to adjust pressure-reducing constant pressure valve outlet pressure.
4. left aqueous vapor is kept to share control valve closing, quickly opens right aqueous vapor and share control valve, check on right testboard
While whether tested valve floating ball is blown afloat read tested valve inlet pressure gauge numerical value, from 0.02MPa, 0.06MPa, 0.12MPa,
0.4MPa has primarily determined ball pressure.
5. with primarily determine in 4. rise a ball pressure repeat 2. ~ 4. process twice, observe and determine that the floating ball of tested valve exists
Whether can be repeated to blow afloat on the pressure stage and can be identified as playing ball pressure accordingly.
Second, whether there is or not air suction function measurement, at this time tested valve to be arranged on left testboard for air inlet and exhaust valve.
1. being vented water in gas storage water tank.
2. closing air intake control valve, water inlet control valve, draining control valve, opens left and right aqueous vapor and share control valve.
3. being evacuated with vacuum pump, make to generate certain negative pressure value in gas storage water tank（-0.035~-0.030MPa）When beat rapidly
It drives water control valve into, observes whether tested valve can open air-breathing at this time.
It the advantage is that：
Can measure air inlet and exhaust valve aqueous vapor it is alternate when exhaust performance, playing ball pressure this method, having in a large amount of exhaust
It is simple in structure easy to operate without performance tests such as air suction functions, there is wide popularization and application future.
Description of the drawings
Fig. 1 is the front view for the device that the method for the present invention uses.
Fig. 2 is the vertical view for the device that the method for the present invention uses.
Fig. 3 is the side view for the device that the method for the present invention uses.
Specific implementation mode
Embodiment 1
Described in the text " left side " is the lower section in Fig. 2, and " right side " is the top in Fig. 2.And " left side " is the left in Fig. 3,
" right side " is the right in Fig. 3.
A method of it measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate, includes the following steps：
Tested air inlet and exhaust valve is arranged on left testboard 25.
Closing pressure-reducing constant pressure valve 9, check-valves 12, air intake control valve 14, left aqueous vapor shares control valve 27, right aqueous vapor shares control
Valve 28 and water inlet control valve 20 processed.
1. from the water filling into gas storage water tank 1 of water inlet pipe 2, water injection rate is 1/4 volume of tank body.
2. being inflated again from air inlet pipe 3 into gas storage water tank 1, air pressure in tank is made to reach 0.4 ~ 0.5MPa.
3. adjustment 9 outlet pressure of pressure-reducing constant pressure valve is 0.05 ~ 0.10MPa.
4. opening check-valves 12, air intake control valve 14, left aqueous vapor successively shares control valve 27, to the left the quilt on testboard 25
Side valve is inflated, and checks whether the big exhaust outlet of tested valve is vented.
5. and then air intake control valve 14 is progressively closed off while opening water inlet control valve 20 again, controlled valve action is steady
Continuously, mutually coordinated, ensure that the instruction of tested valve inlet pressure gauge within the scope of 0.03 ~ 0.05MPa, is filled into tested valve in this way
Water, checks whether the big exhaust outlet of tested valve closes.
6. being again turned on air intake control valve 14, water inlet control valve 20 is simultaneously closed off, and is gradually opened draining control valve 18, is opened
Stable and continuous, mutually coordinated is wanted in closing valve action, ensures tested valve inlet pressure tabular value within the scope of 0.03 ~ 0.05MPa.
At this point, the water surface is gradually reduced in tested valve, gas is gradually filled with valve body, and the big exhaust outlet of tested valve can automatically turn on
Exhaust, you can think the tested valve have aqueous vapor it is alternate when a large amount of degassing functions automatically.
For tested valve inlet pressure tabular value within the scope of 0.03 ~ 0.05MPa, the water surface can drop to the left liquid level below tested valve
Meter top can be seen that the water surface from left liquid level gauge.
If big exhaust outlet cannot automatically turn on exhaust, it is a large amount of when aqueous vapor is alternate to can determine that the air inlet and exhaust valve does not have
Degassing function.
（Note：It is generally subvelocity of light quickly due to gas velocity in the alternate a large amount of exhausts of aqueous vapor, water may be carried
Drop, the air inlet and exhaust valve with slow closure function is also possible to be discharged on a small quantity, but water discharging time is not to be exceeded 1 minute）.
7. carry out 4. ~ process 6. altogether three times, according to test result three times judge tested valve whether have aqueous vapor it is alternate when
Automatic a large amount of degassing functions.
A kind of device that the method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate uses：It is filled including water storage gas storage
It sets, exhaust apparatus, drainage arrangement and test device.
Water storage caisson includes gas storage water tank 1, water inlet pipe 2, air inlet pipe 3 and vacuum tube 4.
1 middle and lower part of gas storage water tank is fixedly connected with water inlet pipe 2, and air inlet pipe 3 and vacuum tube 4 are arranged at 1 top of gas storage water tank.
3 end of air inlet pipe connects gas storage water tank pressure vacuum gauge 5, and 4 end of vacuum tube connects gas storage water tank electric contact
Pressure vacuum gauge 6, the atmospheric pressure value being used to refer in tank body.
Exhaust apparatus includes the first straight tube 7, bend pipe 8 and reducer pipe 10.
First straight tube, 7 one end connects gas storage water tank 1, and 7 other end of the first straight tube connects the one of the bend pipe 8 being bent downwards
End, the other end of bend pipe 8 pass through check-valves by one end of 9 connecting reducing pipe 10 of pressure-reducing constant pressure valve, the other end of reducer pipe 10
One end of 12 connecting short sections 11.
The sectional area that reducer pipe 10 connects 9 side of pressure-reducing constant pressure valve is more than the section that reducer pipe 10 connects 12 side of check-valves
Product.
Drainage arrangement includes the second straight tube 16, the second three-way connection 17 and draining control valve 18.
One end of second straight tube 16 and gas storage water tank 1 connect.
Second mouthful of connection of the other end of the second straight tube 16 and the second three-way connection 17.
The first of second three-way connection 17 is connected with draining control valve 18.
Water inlet control valve 20 is equipped between the third mouth of second three-way connection 17 and the first of the first three-way connection 19（Butterfly
Valve）.
Test device includes connector 13, the first three-way connection 19, left reducer pipe 21 and left bend pipe 22.
The other end of pipe nipple 11 passes through air intake control valve 14（Butterfly valve）The first of jointing 13.
The third mouth of first three-way connection 19 connects the left bend pipe 22 upwardly extended, and left bend pipe 22 is suitable for reading to connect left flange,
As left testboard 25.
Second mouthful of first three-way connection 19 connects one end of left reducer pipe 21.The other end of left reducer pipe 21 passes through left water
Gas shares control valve 27（Butterfly valve）Second mouthful of jointing 13.
The sectional area of 19 side of the first three-way connection of connection of left reducer pipe 21 connects left aqueous vapor less than left reducer pipe 21 and shares
The sectional area of 27 side of control valve.
22 top of left bend pipe is equipped with left tested valve inlet pressure gauge 29, left tested valve import vacuum at left testboard 25
Table 31, left tested valve flow sensor 33 and left tested valve differential pressure pick-up.
First straight tube 7 is horizontally disposed, is arranged in 1 side middle and upper part of gas storage water tank.
Second straight tube 16 is horizontally disposed, is arranged in 1 side middle and lower part of gas storage water tank.
10 top of reducer pipe is equipped with safety valve 15.
The connector 13 is additionally provided with third mouth, and the third mouth of connector 13 shares control valve 28 by right aqueous vapor（Butterfly valve）Even
One end of right reducer pipe 23 is connect, the other end of right reducer pipe 23 connects the right bend pipe 24 upwardly extended, 24 connection suitable for reading of right bend pipe
There is right flange, right flange is as right testboard 26.
Right reducer pipe 23 connects right aqueous vapor and shares the sectional area of 28 side of control valve connects right bend pipe more than right reducer pipe 23
The sectional area of 24 sides.
24 top of right bend pipe is equipped with right tested valve inlet pressure gauge 30, right tested valve import vacuum meter at testboard 26
32, right tested valve flow sensor 34 and right tested valve differential pressure pick-up.
The left bend pipe 22 be equipped with left liquid level gauge 35, left liquid level gauge 35 be transparent glass tube, highly with left bend pipe 22
It is highly identical, it is connected to left bend pipe 22 by two left connection pipes, can show the water surface elevation in left bend pipe 22.
Right bend pipe 24 is equipped with right liquid level gauge, and right liquid level is calculated as transparent glass tube, highly identical as 24 height of right bend pipe, leads to
It crosses and is connected to right bend pipe 24 two right communicating pipes.
Left bend pipe 22 and 24 height of right bend pipe are identical.
The model of left tested valve flow sensor 33 and right tested valve flow sensor 34 is German EGE-
Elektronik companies MR783811 type flow sensors
The model of left tested valve differential pressure pick-up and right tested valve differential pressure pick-up is PUHOLL（Young tiger is congratulated）Shanghai instrument
Finite instrument company PH3051DP type intelligent differential pressure sensors.
The present apparatus can measure two simultaneously, or only measure the main performance of an air inlet and exhaust valve, test two into
When air bleeding valve, connector 13 can select three-way connection.
It is welding between gas storage water tank 1 and water inlet pipe 2, air inlet pipe 3, vacuum tube 4.
First straight tube 7 is the beginning of exhaust apparatus, is welded in 1 side middle and upper part of gas storage water tank.
The beginning of drainage arrangement is the second straight tube 16, is welded in 1 side middle and lower part of gas storage water tank.
It is all made of method between first straight tube 7 and bend pipe 8, bend pipe 8 and pressure-reducing constant pressure valve 9, pressure-reducing constant pressure valve 9 and reducer pipe 10
Orchid connection.
Second mouthful of second straight tube 16 and the second three-way connection 17 uses flanged joint.
Water storage air accumulator 1 can simultaneously water storage it is gentle, can also individually water storage or gas storage.
The pressed gas in water storage air accumulator 1 is only discharged in exhaust apparatus, and drainage arrangement is only discharged in water storage air accumulator 1 and is higher by
The water at 16 beginning of the second straight tube.
Exhaust apparatus is provided with safety valve 15, and is switched by 14 control piper of air intake control valve, and drainage arrangement is by into water control
Valve 20 processed controls, and the superfluous water in pipeline is discharged by the control of draining control valve 18.
Left testboard 25 and right testboard 26, be mounted on each testboard tested valve inlet pressure gauge, tested valve into
Mouth vacuum meter and flow sensor, can test the performance of 2 air inlet and exhaust valves simultaneously.
First three-way connection 19 and left reducer pipe 21, the first three-way connection 19 and left bend pipe 22, right reducer pipe 23 and the right side are curved
It is all made of flanged joint between pipe 24, left bend pipe 22 and left testboard 25, right bend pipe 24 and right testboard 26.
Embodiment 2
The model of left tested valve differential pressure pick-up and right tested valve differential pressure pick-up is PUHOLL（Young tiger is congratulated）Shanghai instrument
Finite instrument company PH3351DP type intelligent differential pressure sensors.
Claims (7)
1. a kind of device that the method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate uses, including water storage caisson,
Exhaust apparatus, drainage arrangement and test device；It is characterized in that：
Water storage caisson includes gas storage water tank (1), water inlet pipe (2), air inlet pipe (3) and vacuum tube (4)；
Gas storage water tank (1) middle and lower part is fixedly connected with water inlet pipe (2), and air inlet pipe (3) and vacuum are arranged at gas storage water tank (1) top
It manages (4)；
Air inlet pipe (3) end connects gas storage water tank pressure vacuum gauge (5), and vacuum tube (4) end connection gas storage water tank electricity connects
Point pressure vacuum gauge (6)；
Exhaust apparatus includes the first straight tube (7), bend pipe (8) and reducer pipe (10)；
First straight tube (7) one end connects gas storage water tank (1), and the first straight tube (7) other end connects the bend pipe (8) being bent downwards
One end, the other end of bend pipe (8) by one end of pressure-reducing constant pressure valve (9) connecting reducing pipe (10), reducer pipe (10) it is another
One end that end passes through check-valves (12) connecting short section (11)；
The sectional area that reducer pipe (10) connects pressure-reducing constant pressure valve (9) side is more than reducer pipe (10) connection check-valves (12) side
Sectional area；
Drainage arrangement includes the second straight tube (16), the second three-way connection (17) and draining control valve (18)；
One end of second straight tube (16) and gas storage water tank (1) connection；
Second mouthful of connection of the other end and the second three-way connection (17) of the second straight tube (16)；
The first of second three-way connection (17) is connected with draining control valve (18)；
Water inlet control valve (20) is equipped between the third mouth and the first of the first three-way connection (19) of second three-way connection (17)；
Test device includes connector (13), the first three-way connection (19), left reducer pipe (21) and left bend pipe (22)；
The first that the other end of pipe nipple (11) passes through air intake control valve (14) jointing (13)；
The third mouth of first three-way connection (19) connects the left bend pipe (22) upwardly extended, left bend pipe (22) the left method of connection suitable for reading
Orchid, as left testboard (25)；
One end of second mouthful of left reducer pipe (21) of connection of the first three-way connection (19)；The other end of left reducer pipe (21) passes through a left side
Aqueous vapor shares second mouthful of control valve (27) jointing (13)；
The sectional area of the first three-way connection of connection (19) side of left reducer pipe (21) is less than left reducer pipe (21) and connects left aqueous vapor
Share the sectional area of control valve (27) side；
Left bend pipe (22) top is equipped with left tested valve inlet pressure gauge (29), left tested valve import vacuum meter (31), left tested valve
Flow sensor (33) and left tested valve differential pressure pick-up；
The connector (13) is additionally provided with third mouth, and the third mouth of connector (13) shares control valve (28) the connection right side by right aqueous vapor
One end of reducer pipe (23), the other end of right reducer pipe (23) connect the right bend pipe (24) upwardly extended, and right bend pipe (24) is suitable for reading
It is connected with right flange, right flange is as right testboard (26)；
The sectional area that the right aqueous vapor of right reducer pipe (23) connection shares control valve (28) side is right more than right reducer pipe (23) connection curved
Manage the sectional area of (24) side.
2. the dress that a kind of method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate according to claim 1 uses
It sets, it is characterised in that：First straight tube (7) is horizontally disposed, is arranged in gas storage water tank (1) side middle and upper part；
Second straight tube (16) is horizontally disposed, is arranged in gas storage water tank (1) side middle and lower part.
3. the dress that a kind of method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate according to claim 1 uses
It sets, it is characterised in that：Described reducer pipe (10) top is equipped with safety valve (15).
4. the dress that a kind of method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate according to claim 1 uses
It sets, it is characterised in that：The left bend pipe (22) is equipped with left liquid level gauge, highly identical as left bend pipe (22) height, passes through two
A left connection pipe is connected to left bend pipe (22)；
Right bend pipe (24) is equipped with right liquid level gauge, highly identical as right bend pipe (24) height, curved by two right communicating pipes and the right side
Manage (24) connection.
5. the dress that a kind of method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate according to claim 1 uses
It sets, it is characterised in that：Left bend pipe (22) is identical with right bend pipe (24) height.
6. a kind of method that device using described in claim 4 measures air inlet and exhaust valve exhaust performance when aqueous vapor is alternate, special
Sign is to include the following steps：
Tested air inlet and exhaust valve is arranged in left testboard（25）On；
Close pressure-reducing constant pressure valve（9）, check-valves（12）, air intake control valve（14）, left aqueous vapor share control valve（27）, right aqueous vapor closes
Use control valve（28）And water inlet control valve（20）；
1. by water inlet pipe（2）To gas storage water tank（1）Interior water filling, water injection rate are 1/4 volume of tank body；
2. again by air inlet pipe（3）To gas storage water tank（1）Interior inflation makes air pressure in tank reach 0.4 ~ 0.5MPa；
3. adjusting pressure-reducing constant pressure valve（9）Outlet pressure is 0.05 ~ 0.10MPa；
4. opening check-valves successively（12）, air intake control valve（14）, left aqueous vapor share control valve（27）, testboard to the left（25）On
Tested valve inflation, check the big exhaust outlet of tested valve whether be vented；
5. and then opening water inlet control valve again（20）While progressively close off air intake control valve（14）, controlled valve action will be steadily
Continuously, mutually coordinated, ensure that the instruction of tested valve inlet pressure gauge within the scope of 0.03 ~ 0.05MPa, is filled into tested valve in this way
Water, checks whether the big exhaust outlet of tested valve closes；
6. being again turned on air intake control valve（14）, simultaneously close off water inlet control valve（20）, and it is gradually opened draining control valve（18）,
Stable and continuous, mutually coordinated is wanted in controlled valve action, ensures tested valve inlet pressure tabular value within the scope of 0.03 ~ 0.05MPa；
At this point, the water surface is gradually reduced in tested valve, gas is gradually filled with valve body, and the big exhaust outlet of tested valve being capable of the row of automatic opening
Gas, you can think the tested valve have aqueous vapor it is alternate when a large amount of degassing functions automatically；
If big exhaust outlet cannot automatically turn on exhaust, it can determine that the air inlet and exhaust valve does not have and be largely vented when aqueous vapor is alternate
Function；
7., 4. ~ process 6. carry out altogether three times, according to test result three times judge tested valve whether have aqueous vapor it is alternate when it is automatic
A large amount of degassing functions.
7. a kind of method measuring air inlet and exhaust valve exhaust performance when aqueous vapor is alternate according to claim 6, feature exist
In including the following steps：
It is observed while carrying out step 6.:Within the scope of 0.03 ~ 0.05MPa, the water surface can decline tested valve inlet pressure tabular value
The water surface is can be seen that at the top of left liquid level gauge below to tested valve or from left liquid level gauge.
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| CN201909702U (en) * | 2010-11-17 | 2011-07-27 | 应杰 | Exhaust and sealing test device for exhaust valve |
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