CN107664573A - Method and system for testing response characteristic of pressure relief valve - Google Patents
Method and system for testing response characteristic of pressure relief valve Download PDFInfo
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- CN107664573A CN107664573A CN201610619675.3A CN201610619675A CN107664573A CN 107664573 A CN107664573 A CN 107664573A CN 201610619675 A CN201610619675 A CN 201610619675A CN 107664573 A CN107664573 A CN 107664573A
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- 230000004044 response Effects 0.000 title claims abstract description 122
- 238000012360 testing method Methods 0.000 title claims abstract description 75
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- 239000007788 liquid Substances 0.000 claims abstract description 82
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 48
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 39
- 238000012544 monitoring process Methods 0.000 claims abstract description 6
- 238000012806 monitoring device Methods 0.000 claims description 85
- 238000006073 displacement reaction Methods 0.000 claims description 81
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 40
- 229910052757 nitrogen Inorganic materials 0.000 claims description 21
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- 238000005259 measurement Methods 0.000 claims description 5
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 2
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- 239000008398 formation water Substances 0.000 description 8
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- 239000003208 petroleum Substances 0.000 description 1
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- 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
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Abstract
The invention discloses a method and a system for testing response characteristics of a pressure relief valve, and belongs to the field of valve testing. The system comprises: the system comprises a liquid storage tank, a water suction pump, a check valve, monitoring equipment, a main pipeline, branch pipelines, a pressure release valve and a pressure transmitter; the main pipeline and the branch pipelines are respectively communicated with the liquid storage tank, the main pipeline is communicated with the branch pipelines, the water suction pump and the check valve are arranged on the main pipeline, the branch pipelines are provided with a pressure release valve and a pressure transmitter, and the pressure transmitter is electrically connected with the monitoring equipment; when the response characteristic of the target pressure relief valve is tested, the pressure relief valves except the target pressure relief valve are adopted to form water hammer, a first time corresponding to the preset pipeline pressure at the upstream of the target pressure relief valve and a second time corresponding to the maximum pipeline pressure are obtained, and the difference between the second time and the first time is used as the response duration of the target pressure relief valve. The invention solves the problem of complex response characteristic test process of a plurality of pressure release valves, and achieves the effect of simplifying the response characteristic test process of the plurality of pressure release valves.
Description
Technical field
The present invention relates to valve testing field, more particularly to a kind of relief valve response characteristic method of testing and system.
Background technology
In petroleum transportation industry, relief valve can be generally set to carry out pressure release to transport line in transport line.And
In order to ensure the safety of transport line, set in transport line before relief valve, it is necessary to be tested using relief valve response characteristic
System is tested the response characteristic of relief valve, wherein, response characteristic generally use response time characterizes, and response time refers to
Be the moment corresponding to the maximum line pressure of pipeline where relief valve it is corresponding with default line pressure at the time of time difference, this
Default line pressure is the pressure of pipeline when relief valve is opened, and is referred to as default Opening pressure.
Correlation technique provides a kind of relief valve response characteristic test system, as shown in figure 1, it shows the pressure release response valve
The usage scenario figure of characteristic test system, relief valve response characteristic test system include：Liquid storage tank 001, drawing liquid pump 002, non-return
Valve 003, butterfly valve 004, gate valve 005, pressure transmitter 006, Trunk Line 007, first are in charge of line 008 and second and are in charge of line 009, main
Pipeline 007 is in charge of line 008 and second with liquid storage tank 001, first and is in charge of line 009 and connects respectively, and first is in charge of line 008 and second
It is in charge of line 009 to connect with liquid storage tank 001 respectively, drawing liquid pump 002 and check-valves 003 are arranged on Trunk Line 007, and butterfly valve 004 is set
Put and be in charge of first on line 008, gate valve 005 and pressure transmitter 006 are arranged on second and be in charge of on line 009.In test relief valve
During 01 response characteristic, relief valve 01 is arranged on second and is in charge of on line 009 and closes relief valve 01, opened butterfly valve 004, gate valve
005 and drawing liquid pump 002, drawing liquid pump 002 extracts the liquid in liquid storage tank 001 out, and liquid is in charge of line by Trunk Line 007 and first
008 flows into liquid storage tank 001, and during liquid flows, closing butterfly valve 004 makes first to be in charge of formation water attack in line 008,
The pressure rise of whole pipeline, under the effect of the pressure relief valve 01 open, pass through pressure transmitter 006 and monitor the institute of relief valve 01
In the pressure change of pipeline, and when recording second corresponding to the first moment corresponding to default line pressure and maximum line pressure
Carve, the response time using the difference at the second moment and the first moment as relief valve 01.After the completion of test, by relief valve 01 from
Two, which are in charge of line 009, disassembles, and replaces with other relief valves to be measured and continues to test.
But the relief valve response characteristic test system in correlation technique is when testing the response characteristic of more relief valves,
Need to change relief valve, cause the test process to the response characteristic of more relief valves complicated.
The content of the invention
In order to solve the problems, such as the test process complexity of the response characteristic of more relief valves, the present invention provides a kind of relief valve
Response characteristic method of testing and system.The technical scheme is as follows：
First aspect, there is provided a kind of relief valve response characteristic test system, the system include：
Liquid storage tank, suction pump, check-valves, monitoring device, Trunk Line, m are in charge of line, m relief valve and n first pressure
Transmitter, n >=m >=2, and m and n are integer；
The first end of the Trunk Line connects with the liquid storage tank, the second end of the Trunk Line respectively with each described point
The first end connection of pipeline, each second end for being in charge of line connect with the liquid storage tank, the suction pump and the non-return
Valve is successively set on the Trunk Line according to from the first end close to the Trunk Line to the first end away from the Trunk Line,
It is each described be in charge of on line be provided with the first pressure transmitter and a relief valve, it is each it is described be in charge of on line the
One pressure transmitter positioned at the upstream of the relief valve being in charge of on line, each first pressure transmitter respectively with institute
State monitoring device electrical connection, the monitoring device is used to described be in charge of line to each by each first pressure transmitter
The line pressure of the relief valve upstream be monitored.
Alternatively, the system also includes：M gate valve,
It is in charge of described in each on line and is provided with a gate valve, and each gate valve being in charge of on line is located at each institute
State the downstream for the relief valve being in charge of on line.
Alternatively, the system also includes：M flowmeter,
It is in charge of described in each on line and is provided with a flowmeter, and each flowmeter being in charge of on line is positioned at every
The upstream of the individual first pressure transmitter being in charge of on line；
Each flowmeter is electrically connected with the monitoring device respectively, and the monitoring device is additionally operable to by each described
Flowmeter is monitored to the flow for flowing through each liquid for being in charge of line.
Alternatively, the system also includes：Q second pressure transmitter, q >=m, and q are integer,
It is in charge of described in each on line and is provided with the second pressure transmitter, each second pressure being in charge of on line becomes
Device is sent to be set respectively with the monitoring positioned at the downstream of each relief valve being in charge of on line, each second pressure transmitter
Standby electrical connection, the monitoring device be additionally operable to by each second pressure transmitter to it is each it is described be in charge of on line described in
The line pressure in relief valve downstream is monitored.
Alternatively, each relief valve includes：Electromagnetism displacement transducer, each electromagnetism displacement transducer respectively with
The monitoring device electrical connection；
The electromagnetism displacement transducer of the target relief valve is used for the valve displacement for measuring the target relief valve；
The monitoring device is additionally operable to the valve displacement according to the target relief valve, whether determines the target relief valve
It is shown in a fully open operation, the aperture for the relief valve being shown in a fully open operation is maximum opening, and standard-sized sheet shape is in the target relief valve
During state, the pressure value of first pressure transmitter collection and the pressure of second pressure transmitter collection be in charge of according to the target on line
Force value, determine the pressure differential of the upstream and downstream of the target relief valve, according to discharge coefficient calculation formula, the pressure differential and
The flow value of target flow meter measurement, calculates the discharge coefficient of the target relief valve, and the target flow is calculated as positioned at described
Target is in charge of the flowmeter on line；
Wherein, the discharge coefficient calculation formula is：Cv is the discharge coefficient, and Q is the flow
Value, ρ are the density for flowing through the liquid that the target is in charge of line, ρ0For the density of water, Δ p is the pressure differential.
Alternatively, the suction pump is main pump, and the system also includes：Preposition feed pump,
The preposition feed pump is arranged on the Trunk Line, and positioned at the main pump and the Trunk Line first end it
Between.
Alternatively, q=n=m=2, the relief valve are nitrogen relief valve.
Second aspect, there is provided a kind of relief valve response characteristic method of testing, for the pressure release response valve described in first aspect
Characteristic test system, methods described include：
When measuring the response characteristic of target relief valve, the target relief valve is closed, is opened in m relief valve except described
All relief valves and suction pump outside target relief valve, the liquid in liquid storage tank is in charge of by Trunk Line and m in line and remove
The line of being in charge of that the target is in charge of outside line flows to the liquid storage tank, and the target relief valve is in the m relief valve
Any one relief valve, it is integer that the target, which is in charge of be in charge of line, m >=2, and m of the line where the target relief valve,；
All relief valves in addition to the target relief valve in the m relief valve are closed, the target is in charge of line
Interior formation water attack；
It is in charge of the default pipeline pressure of the target relief valve upstream on line by the monitoring device acquisition target
Second moment corresponding to first moment corresponding to power and maximum line pressure；
Response time using the difference at second moment and first moment as the target relief valve.
Alternatively, methods described also includes：
Pass through the valve displacement of target relief valve described in the electromagnetism displacement sensor of the target relief valve；
Valve displacement by the monitoring device according to the target relief valve, determines whether the target relief valve is located
In full-gear, the aperture for the relief valve being shown in a fully open operation is maximum opening；
When the target relief valve is shown in a fully open operation, the first pressure transmitter being in charge of according to the target on line is adopted
The pressure value of pressure value and second pressure the transmitter collection of collection, determine the pressure of the upstream and downstream of the target relief valve
Difference；
The flow value measured according to discharge coefficient calculation formula, the pressure differential and the target flow meter, described in calculating
The discharge coefficient of target relief valve, the target flow are calculated as the flowmeter being in charge of positioned at the target on line；
Wherein, the discharge coefficient calculation formula is：Cv is the discharge coefficient, and Q is the flow
Value, ρ are the density for flowing through the liquid that the target is in charge of line, ρ0For the density of water, Δ p is the pressure differential.
Alternatively, m=2, the relief valve are nitrogen relief valve, and described close in the m relief valve removes the target
All relief valves outside relief valve, including：
All relief valve inflated with nitrogen into the m relief valve in addition to the target relief valve, make the m pressure release
All relief valves in valve in addition to the target relief valve are closed.
The beneficial effect that technical scheme provided by the invention is brought is：
Relief valve response characteristic method of testing and system provided by the invention, due to the response characteristic of test target relief valve
When, all relief valves in m relief valve in addition to target relief valve can be used to form water attack, target relief valve is m and let out
Any one relief valve in pressure valve, therefore, the response characteristic that relief valve can tests more relief valves is changed without, is solved
The problem of response characteristic test process complexity of more relief valves, the response characteristic test process for simplifying more relief valves is reached
Effect.
It should be appreciated that the general description and following detailed description of the above are only exemplary, this can not be limited
Invention.
Brief description of the drawings
Technical scheme in order to illustrate the embodiments of the present invention more clearly, make required in being described below to embodiment
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for
For those of ordinary skill in the art, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is a kind of usage scenario figure for relief valve response characteristic test system that correlation technique provides；
Fig. 2 is a kind of structural representation of relief valve response characteristic test system provided in an embodiment of the present invention；
Fig. 3 is the structural representation of another relief valve response characteristic test system provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of relief valve response characteristic method of testing provided in an embodiment of the present invention；
Fig. 5 is the flow chart of another relief valve response characteristic method of testing provided in an embodiment of the present invention.
Accompanying drawing herein is merged in specification and forms the part of this specification, shows the implementation for meeting the present invention
Example, and for explaining principle of the invention together with specification.
Embodiment
In order that the object, technical solutions and advantages of the present invention are clearer, the present invention is made below in conjunction with accompanying drawing into
One step it is described in detail, it is clear that the described embodiment only a part of embodiment of the present invention, rather than whole implementation
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
All other embodiment, belongs to the scope of protection of the invention.
Fig. 2 is refer to, it illustrates a kind of knot of relief valve response characteristic test system 02 provided in an embodiment of the present invention
Structure schematic diagram, referring to Fig. 2, the relief valve response characteristic test system 02 includes：
Liquid storage tank 021, suction pump 022, check-valves 023, monitoring device 024, Trunk Line 025, m are in charge of line 026, m
Relief valve 027 and n first pressure transmitter 028, n >=m >=2, and m and n are integer；
The first end (not marked in Fig. 2) of Trunk Line 025 connects with liquid storage tank 021, and the second end of Trunk Line 025 is (in Fig. 2
Do not mark) connected respectively with each first end (not marked in Fig. 2) for being in charge of line 026, each it is in charge of second end (Fig. 2 of line 026
In do not mark) connected with liquid storage tank 021, suction pump 022 and check-valves 023 are according to from the first end close to Trunk Line 025 to remote
First end from Trunk Line 025 is successively set on Trunk Line 025, is each in charge of on line 026 and is provided with first pressure transmitter
028 and a relief valve 027, each it is in charge of first pressure transmitter 028 on line 026 positioned at being each in charge of letting out on line 026
The upstream of pressure valve 027, each first pressure transmitter 028 electrically connect with monitoring device 024 respectively, and monitoring device 024 is used to lead to
Each first pressure transmitter 028 is crossed to be monitored the line pressure of each upstream of relief valve 027 being in charge of on line 026；
Wherein, when testing the response characteristic of the first relief valve, using the institute in m relief valve in addition to the first relief valve
There is relief valve to form water attack, the default pipeline pressure of first the first relief valve upstream being in charge of on line is obtained by monitoring device 024
At second moment corresponding to first moment corresponding to power and maximum line pressure, it regard the difference at the second moment and the first moment as the
The response time of one relief valve, the first relief valve are any one relief valve in m relief valve, and first is in charge of line lets out for first
It is in charge of line where pressure valve.
In summary, relief valve response characteristic test system provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, all relief valves formation water attack in addition to target relief valve, target pressure release in m relief valve can be used
Valve is any one relief valve in m relief valve, therefore, is changed without the response spy that relief valve can tests more relief valves
Property, solve the problems, such as the response characteristic test process complexity of more relief valves, reached the response spy for simplifying more relief valves
The effect of property test process.
Fig. 3 is refer to, it illustrates another relief valve response characteristic test system 03 provided in an embodiment of the present invention
Structural representation, referring to Fig. 3, the relief valve response characteristic test system 03 includes：
Liquid storage tank 031, suction pump 032, check-valves 033, monitoring device 034, Trunk Line 035, m are in charge of line, m pressure release
Valve and n first pressure transmitter, n >=m >=2, and m and n are integer, wherein, the Fig. 3 illustrates by taking m=n=2 as an example,
Then m, which is in charge of line and can be in charge of line 036 and second including first, is in charge of line 037, and m relief valve can include the first relief valve
038 and second relief valve 039, n first pressure transmitter can include first pressure transmitter 040 and first pressure transmitter
041.In embodiments of the present invention, monitoring device 034 can be computer etc., Trunk Line 035 and it is each be in charge of line can be by more
Segment pipe is connected to be formed, and the embodiment of the present invention is not construed as limiting to this.
The first end (not marked in Fig. 3) of Trunk Line 035 connects with liquid storage tank 031, the second end (not marked in Fig. 3) difference
Connected with each first end (not marked in Fig. 3) for being in charge of line, be each in charge of the second end (not marked in Fig. 3) and the liquid storage tank of line
031 connection.Illustratively, as shown in figure 3, the second end of Trunk Line 035 respectively with the first first end for being in charge of line 036 and second point
The first end connection of pipeline 037, first be in charge of the second end of line 036 and second be in charge of the second end of line 037 all with liquid storage tank 031
Connection.
Suction pump 032 and check-valves 033 are according to from the first end close to Trunk Line 035 to first away from Trunk Line 035
End is successively set on Trunk Line 035, is each in charge of on line and is provided with first pressure transmitter and a relief valve, is each in charge of
First pressure transmitter on line is located at the upstream for the relief valve being each in charge of on line,
Wherein, suction pump 032 and check-valves 033 are according to from the first end close to Trunk Line 035 to remote Trunk Line 035
First end be successively set on Trunk Line 035 it can be appreciated that：Suction pump 032 and check-valves 033 according to liquid flowing side
To being successively set on Trunk Line 035.As shown in figure 3, first is in charge of on line 036 and is provided with first pressure transmitter 040 and
One relief valve 038, second is in charge of on line 037 and is provided with the relief valve 039 of first pressure transmitter 041 and second, and first pressure
Transmitter 040 is located at the upstream of the first relief valve 038, and first pressure transmitter 041 is located at the upstream of the second relief valve 039.
Each first pressure transmitter electrically connects with monitoring device 034 respectively, and monitoring device 034 is used to pass through each first
Pressure transmitter is monitored to the line pressure of each relief valve upstream being in charge of on line, and alternatively, monitoring device 034 is also used
In being stored, being shown to line pressure, the embodiment of the present invention is not construed as limiting to this.Illustratively, as shown in figure 3, the first pressure
Power transmitter 040 and first pressure transmitter 041 are electrically connected by signal wire with monitoring device 034 respectively, and monitoring device 034 can
Supervised with being in charge of first the line pressure of the upstream of the first relief valve 038 on line 036 by first pressure transmitter 040
Control, the line pressure that the upstream of the second relief valve 039 on line 036 is in charge of second by first pressure transmitter 041 are supervised
Control.
In embodiments of the present invention, when the response characteristic of test target relief valve, using in m relief valve except target is let out
All relief valves outside pressure valve form water attack, the target relief valve upstream being in charge of by the acquisition of monitoring device 034 target on line
Default line pressure corresponding to the second moment corresponding to the first moment and maximum line pressure, by the second moment and the first moment
Response time of the difference as target relief valve, target relief valve is any one relief valve in m relief valve, and target is divided
Pipeline is in charge of line where target relief valve.
The embodiment of the present invention by target relief valve be the first relief valve 038, target be in charge of line be first be in charge of line 036 exemplified by
Illustrate.Specifically, the Opening pressure that can be closed the first relief valve 038 and set the first relief valve 038 (that is to say pre-
If line pressure), the second relief valve 039 and suction pump 032 are opened, suction pump 032 extracts the liquid in liquid storage tank 031 out, liquid
Body passes sequentially through Trunk Line 035 and second and is in charge of line 037 and is flowed to liquid storage tank 031, during liquid flows, closes suddenly
Second relief valve 039, make second to be in charge of in line 037 and form water attack, it is in place to the institute of check-valves 033 that water attack along second is in charge of line 037
Propagation is put, because check-valves 033 is check valve, water attack can not pass through check-valves 033, therefore, when water attack propagates to check-valves
During 033 position, water attack is in charge of line 036 to the first pressure release along the Trunk Line 035 in the downstream of check-valves 033 and first successively again
The position of valve 038 is propagated, during water attack is propagated to the position of the first relief valve 038, where the first relief valve 038
The line pressure of position gradually increases, when line pressure to the default line pressure of the position of the first relief valve 038, first
Relief valve 038 is opened, and afterwards, the line pressure of the position of the first relief valve 038 continues to increase, and is then reduced and is maintained again
In pre-set pressure range, the pipe of the first upstream of the first relief valve 038 being in charge of on line 036 can be observed by monitoring device 034
The change of line pressure, the line pressure for determining the upstream of the first relief valve 038 are the first moment corresponding to default line pressure and the
The line pressure of the upstream of one relief valve 038 is the second moment corresponding to maximum line pressure, then by the second moment with first when
Response time of the difference at quarter as the first relief valve 038, illustratively, the first moment can be t1, and the second moment can be t2
When, the response time of first relief valve 038 can be T=t2-t1.Similarly, the response of the second relief valve 039 can also be tested
Duration, the embodiment of the present invention will not be repeated here.
Further, also include please continue to refer to Fig. 3, the relief valve response characteristic test system 03：M gate valve, each
It is in charge of on line and is provided with a gate valve, and each gate valve being in charge of on line is located at the downstream for the relief valve being each in charge of on line, often
Individual gate valve can be used for the flow that regulation flows through each liquid for being in charge of line.In embodiments of the present invention, m gate valve can include
First gate valve 042 and the second gate valve 043, the first gate valve 042 are arranged on first and are in charge of on line 036 and are located at the first relief valve 038
Downstream, the second gate valve 043 is arranged on second and is in charge of on line 037 and used positioned at the downstream of the second relief valve 03, the first gate valve 042
The flow of the first liquid for being in charge of line 036 is flowed through in regulation, the second gate valve 043, which is used to adjust, flows through the second liquid for being in charge of line 037
The flow of body, the embodiment of the present invention will not be repeated here.
Further, also include please continue to refer to Fig. 3, the relief valve response characteristic test system 03：M flowmeter, often
It is individual be in charge of on line be provided with a flowmeter, and each flowmeter being in charge of on line is located at the first pressure being each in charge of on line and become
Send the upstream of device；Each flowmeter is electrically connected with monitoring device 034 respectively, and monitoring device 034 is additionally operable to by each flowmeter
The flow for flowing through each liquid for being in charge of line is monitored, alternatively, monitoring device 034 is additionally operable to the flow progress to pipeline
Storage, display etc., the embodiment of the present invention is not construed as limiting to this.As shown in figure 3, in embodiments of the present invention, m flowmeter can be with
Including first flowmeter 044 and second flowmeter 045, first flowmeter 044 is arranged on first and is in charge of on line 036, and first-class
Gauge 044 is electrically connected by signal wire with monitoring device 034, and monitoring device 034 can be by first flowmeter 044 to flowing through
One flow for being in charge of the liquid of line 036 is monitored, and second flowmeter 045 is arranged on second and is in charge of on line 037, and second flow
Meter 045 is electrically connected by signal wire with monitoring device 034, and monitoring device 034 can be by second flowmeter 045 to flowing through second
The flow for being in charge of the liquid of line 037 is monitored.Alternatively, in embodiments of the present invention, flowmeter can be external clamping ultrasound
Low.
Further, also include please continue to refer to Fig. 3, the relief valve response characteristic test system 03：Q second pressure becomes
It is integer to send device, q >=m, and q, is each in charge of on line and is provided with second pressure transmitter, and the second pressure being each in charge of on line becomes
Device is sent to be located at the downstream for the relief valve being each in charge of on line, each second pressure transmitter electrically connects with monitoring device 034 respectively,
Specifically, be each in charge of second pressure transmitter on line positioned at being each in charge of between the relief valve on line and gate valve, and with
Monitoring device 034 is electrically connected, and monitoring device 034 is additionally operable to by each second pressure transmitter to each pressure release being in charge of on line
The line pressure in valve downstream is monitored.As shown in figure 3, in embodiments of the present invention, q second pressure transmitter can include
Second pressure transmitter 046 and second pressure transmitter 047, second pressure transmitter 046 are arranged on first and are in charge of on line 036,
And second pressure transmitter 046, between the first relief valve 038 and the first gate valve 042, second pressure transmitter 046 passes through letter
Number line electrically connects with monitoring device 034, and monitoring device 034 can be in charge of on line 036 first by second pressure transmitter 046
The line pressure of the upstream of the first relief valve 038 be monitored, second pressure transmitter 047 is arranged on second and is in charge of on line 037,
And second pressure transmitter 047, between the second relief valve 039 and the second gate valve 043, second pressure transmitter 047 passes through letter
Number line electrically connects with monitoring device 034, and monitoring device 034 can be in charge of on line 037 second by second pressure transmitter 047
The line pressure of the upstream of the second relief valve 039 be monitored.
Further, each relief valve includes：Electromagnetism displacement transducer (not shown in Fig. 3), each electromagnetism displacement sensing
Device electrically connects (not shown in Fig. 3) with monitoring device 034 respectively, and alternatively, electromagnetism displacement transducer can be built in relief valve
In, the embodiment of the present invention is not construed as limiting to this；Illustratively, each electromagnetism displacement transducer passes through signal wire and monitoring device respectively
034 electrical connection, the embodiment of the present invention are not limited this.
The electromagnetism displacement transducer of target relief valve is used for the valve displacement for measuring target relief valve；Monitoring device 034 is also
For the valve displacement according to target relief valve, determine whether target relief valve is shown in a fully open operation, what is be shown in a fully open operation lets out
The aperture of pressure valve is maximum opening, and when target relief valve is shown in a fully open operation, the first pressure being in charge of according to target on line becomes
The pressure value that device gathers and the pressure value that second pressure transmitter gathers are sent, determines the pressure of the upstream and downstream of target relief valve
Difference, the flow value measured according to discharge coefficient calculation formula, pressure differential and target flow meter, the flow system of calculating target relief valve
Number, target flow are calculated as the flowmeter being in charge of positioned at target on line；Wherein, discharge coefficient calculation formula is：
Cv is discharge coefficient, and Q is flow value, ρ is the density for flowing through the liquid that target is in charge of line, ρ0For the density of water, Δ p is pressure
Difference.
Alternatively, it is first to be in charge of line that the embodiment of the present invention, which is in charge of line by the first relief valve 038, target of target relief valve,
036, and illustrated so that the liquid in liquid storage tank 031 is water as an example.The electromagnetism displacement transducer of first relief valve 038 can be surveyed
038 valve displacement of the relief valve of flow control one and 038 valve displacement that the first relief valve is sent to monitoring device 034, monitoring device
034 can determine whether the first relief valve 038 is shown in a fully open operation according to the valve displacement of the first relief valve 038, be let out first
When pressure valve 038 is shown in a fully open operation, monitoring device 034 obtains now the first first pressure transmitter 040 being in charge of on line 036 and adopted
The flow value Q that the pressure value P 2 and first flowmeter 044 that the pressure value P 1 of collection, second pressure transmitter 046 gather measure, according to
Pressure value P 1 and pressure value P 2 determine the pressure differential Δ p, Δ p=P1-P2, according to stream of the upstream and downstream of the first relief valve 038
Coefficient of discharge calculation formula, pressure differential Δ p and flow value Q, calculate the flow coefficient Cv of the first relief valve 038；Wherein, flow
Coefficient formulas is：ρ is the density for flowing through the first liquid for being in charge of line 036, ρ0For the density of water,
In the embodiment of the present invention, it is water, therefore, ρ=ρ to flow through the first liquid for being in charge of line 0360, discharge coefficient calculation formula can be：So the pressure value that can be gathered according to first pressure transmitter 040, second pressure transmitter 046 gather
The flow value that pressure value and first flowmeter 044 measure, is calculated the Cv values of the first relief valve 038, similarly, can also determine
The Cv values of second relief valve 039.
Illustratively, in embodiments of the present invention, monitoring device 034 can store the valve total displacement of the first relief valve 038,
After the valve displacement of electromagnetism displacement transducer transmission for receiving the first relief valve 038, monitoring device 034 may determine that first lets out
Whether the valve displacement of pressure valve 038 is equal to the valve total displacement of the first relief valve 038, if the valve displacement of the first relief valve 038
Equal to the valve total displacement of the first relief valve 038, then monitoring device 034 determines that the first relief valve 038 is shown in a fully open operation, if the
The valve displacement of one relief valve 038 is not equal to the valve total displacement of the first relief valve 038, then monitoring device 034 determines that first lets out
Pressure valve 038 is not in full-gear.Or monitoring device 034 is sent out in the electromagnetism displacement transducer for receiving the first relief valve 038
After the valve displacement sent, can according to after the valve displacement of the first relief valve 038 and the first relief valve 038 valve total displacement,
The valve displacement that the first relief valve 038 is calculated accounts for the percentage of valve total displacement, then judges whether the percentage is equal to
100% (a hundred per cent), if the percentage is equal to 100%, monitoring device 034 determines that the first relief valve 038 is in standard-sized sheet shape
State, if the percentage you be equal to 100%, monitoring device 034 determine the first relief valve 038 be not in full-gear.
Further, in embodiments of the present invention, suction pump 032 can be main pump, please continue to refer to Fig. 3, the relief valve
Response characteristic test system 03 also includes：Preposition feed pump 048, preposition feed pump 048 are arranged on Trunk Line 035, and preposition
Feed pump 048 is located between main pump and the first end of Trunk Line 035.The preposition feed pump 048 can be used for into liquid storage tank 031
Liquid apply pressure, the liquid in liquid storage tank 031 is extracted out, suction pump 032 further can apply pressure to liquid, before this
The setting for putting feed pump 048 can be very good to protect the security of main pump, and the embodiment of the present invention will not be repeated here.
Alternatively, in embodiments of the present invention, relief valve is nitrogen relief valve.When closing relief valve, it can use and fill
Nitrogen system in the presence of nitrogen, relief valve quick closedown, so can quickly produce water attack to relief valve inflated with nitrogen,
The running environment of pipeline is more really simulated, so that the response characteristic of the relief valve of test is special closer to actual response
Property, the embodiment of the present invention will not be repeated here.It should be noted that in order that the relief valve quick closedown of manufacture water attack, can be with
A certain amount of nitrogen is pre-charged with the relief valve for manufacturing water attack, so relief valve can be made to be rapidly filled with nitrogen, it is real
The effect of existing relief valve quick closedown, the embodiment of the present invention will not be repeated here.
In summary, relief valve response characteristic test system provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, all relief valves formation water attack in addition to target relief valve, target pressure release in m relief valve can be used
Valve is any one relief valve in m relief valve, therefore, is changed without the response spy that relief valve can tests more relief valves
Property, solve the problems, such as the response characteristic test process complexity of more relief valves, reached the response spy for simplifying more relief valves
The effect of property test process.
Relief valve response characteristic test system in correlation technique is limited using butterfly valve manufacture water attack by butterfly valve bearing capacity
System, the operating pressure of pipeline can not be too big, causes the relief valve response characteristic test system in correlation technique can not test big mouth
Footpath, big flow relief valve response characteristic, current maximum can only testing beam diameter be DN100 (units：Rice), maximum stream flow is
100m3The response characteristic of/h (cubic meter is per hour) relief valve, if heavy caliber relief valve is arranged on into the less pipeline of caliber
On tested, due to the limited diameter of pipeline, cause the limited in one's ability of pipelined liquid, it is impossible to well simulation in great Kou
Influence of the big flow to relief valve response time under the pipeline of footpath, the operating mode at the scene of can not really simulating, so as to can not accurately survey
The response time of relief valve is tried, the relief valve response characteristic test system in correlation technique can not be suitable for pipeline flow
3000m3The test of the response characteristic of/h relief valve.Relief valve response characteristic test system provided in an embodiment of the present invention, is adopted
Water attack is manufactured with relief valve, because the bearing capacity of relief valve is preferable, therefore, larger line pressure can be born so that this
Inventive embodiments provide relief valve response characteristic test system can be used for test heavy caliber, big flow relief valve response
Characteristic, and the response time of relief valve can be accurately tested, it is 3000m to go for pipeline flow3/ h relief valve
The test of response characteristic.
The pressure release response valve that relief valve response characteristic test system provided in an embodiment of the present invention can apply to hereafter is special
Property method of testing, relief valve response characteristic method of testing may refer to the description in hereafter each embodiment in the embodiment of the present invention.
Fig. 4 is refer to, it illustrates a kind of flow of relief valve response characteristic method of testing provided in an embodiment of the present invention
Figure, the relief valve response characteristic method of testing can be used for the relief valve response characteristic test system shown in Fig. 2 or Fig. 3, referring to
Fig. 4, the relief valve response characteristic method of testing can include：
Step 401, when measure target relief valve response characteristic when, close target relief valve, open m relief valve in remove
All relief valves and suction pump outside target relief valve, the liquid in liquid storage tank is in charge of by Trunk Line and m in line and remove
The line of being in charge of that target is in charge of outside line flows to liquid storage tank, and target relief valve is any one relief valve in m relief valve, mesh
Mark is in charge of line and is in charge of line where target relief valve, and m is more than or equal to 2, and m is integer.
Step 402, all relief valves in addition to target relief valve in m relief valve are closed, target is in charge of shape in line
Into water attack.
Step 403, the default line pressure pair that target is in charge of target relief valve upstream on line is obtained by monitoring device
Second moment corresponding to the first moment answered and maximum line pressure.
Step 404, the response time using the difference at the second moment and the first moment as target relief valve.
In summary, relief valve response characteristic method of testing provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, all relief valves formation water attack in addition to target relief valve, target pressure release in m relief valve can be used
Valve is any one relief valve in m relief valve, therefore, is changed without the response spy that relief valve can tests more relief valves
Property, solve the problems, such as the response characteristic test process complexity of more relief valves, reached the response spy for simplifying more relief valves
The effect of property test process.
Alternatively, the relief valve response characteristic method of testing can also include：
Pass through the valve displacement of the electromagnetism displacement sensor target relief valve of target relief valve；
Valve displacement by monitoring device according to target relief valve, determines whether target relief valve is shown in a fully open operation,
The aperture for the relief valve being shown in a fully open operation is maximum opening；
When target relief valve is shown in a fully open operation, the pressure that the first pressure transmitter on line gathers is in charge of according to target
Value and the pressure value of second pressure transmitter collection, determine the pressure differential of the upstream and downstream of target relief valve；
The flow value measured according to discharge coefficient calculation formula, pressure differential and target flow meter, calculate target relief valve
Discharge coefficient, target flow are calculated as the flowmeter being in charge of positioned at target on line；
Wherein, discharge coefficient calculation formula is：Cv is discharge coefficient, and Q is flow value, ρ is to flow through mesh
Mark is in charge of the density of the liquid of line, ρ0For the density of water, Δ p is pressure differential.
Alternatively, m=2, relief valve are nitrogen relief valve, are closed all in addition to target relief valve in m relief valve
Relief valve, including：
All relief valve inflated with nitrogen into m relief valve in addition to target relief valve, make in m relief valve except target is let out
All relief valves outside pressure valve are closed.
Above-mentioned all optional technical schemes, any combination can be used to form the alternative embodiment of the present invention, herein no longer
Repeat one by one.
In summary, relief valve response characteristic method of testing provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, all relief valves formation water attack in addition to target relief valve, target pressure release in m relief valve can be used
Valve is any one relief valve in m relief valve, therefore, is changed without the response spy that relief valve can tests more relief valves
Property, solve the problems, such as the response characteristic test process complexity of more relief valves, reached the response spy for simplifying more relief valves
The effect of property test process.
Fig. 5 is refer to, it illustrates the stream of another relief valve response characteristic method of testing provided in an embodiment of the present invention
Cheng Tu, the relief valve response characteristic method of testing can be used for the relief valve response characteristic test system shown in Fig. 2 or Fig. 3, this
Embodiment is carried out by taking the relief valve response characteristic test system 03 that the relief valve response characteristic method of testing is used for shown in Fig. 3 as an example
Illustrate, referring to Fig. 5, the relief valve response characteristic method of testing can include：
Step 501, when measure target relief valve response characteristic when, close target relief valve, open m relief valve in remove
All relief valves and suction pump outside target relief valve, the liquid in liquid storage tank is in charge of by Trunk Line and m in line and remove
The line of being in charge of that target is in charge of outside line flows to liquid storage tank, and target relief valve is any one relief valve in m relief valve, mesh
Mark is in charge of line and is in charge of line where target relief valve, and m is more than or equal to 2, and m is integer.
In embodiments of the present invention, when measuring the response characteristic of target relief valve, target relief valve can be closed, opens m
All relief valves and suction pump in individual relief valve in addition to target relief valve, make the liquid in liquid storage tank pass through Trunk Line and m
The individual line of being in charge of being in charge of in line in addition to target is in charge of line flows to liquid storage tank.
Illustratively, as shown in figure 3, the embodiment of the present invention is in charge of line and is by the first relief valve 038, target of target relief valve
First is in charge of exemplified by line 036 and illustrates, then all relief valves in m relief valve in addition to target relief valve are the second pressure release
Valve 039.Specifically, the first relief valve 038 can be closed and set the Opening pressure of the first relief valve 038, second is opened and let out
Pressure valve 039, suction pump 032, preposition feed pump 048, the first gate valve 042 and the second gate valve 043, make preposition feed pump 048 and take out
Water pump 032 extracts the liquid in liquid storage tank 031 out, and liquid passes sequentially through Trunk Line 035 and second and is in charge of line 037 to liquid storage tank
031 flowing.Wherein, the first relief valve 038 and the second relief valve 039 can be nitrogen relief valve, can be by being let out to first
The inflated with nitrogen of pressure valve 038 closes the first relief valve 038, by being deflated to the second relief valve 039, makes the second relief valve 039
Open, the embodiment of the present invention will not be repeated here.
Step 502, all relief valves in addition to target relief valve in m relief valve are closed, target is in charge of shape in line
Into water attack.
All relief valves in addition to target relief valve in m relief valve can be closed, target is in charge of in line and forms water
Hit.
Illustratively, please continue to refer to Fig. 3, the first relief valve 038 is closed, opens the second relief valve 039, suction pump 032, preceding
After putting feed pump 048, the first gate valve 042 and the second gate valve 043, liquid can pass sequentially through Trunk Line 035 and second and be in charge of line
037 flows to liquid storage tank 031, during liquid flows, can close the second relief valve 039 suddenly, second is in charge of line 037
Interior liquid forms water attack due to inertia reason.Wherein it is possible to make to the inflated with nitrogen of the second relief valve 039 by inflated with nitrogen system
The quick closedown of two relief valve 039, more really to simulate the actual condition of the first relief valve 038 so that the first pressure release of test
The response characteristic of valve 038 is closer to real response characteristic.
It should be noted that the embodiment of the present invention by setting nitrogen relief valve, can make relief valve quick closedown and open
Open, more really simulate the actual condition of the first relief valve 038.It should be noted that in order that the second relief valve 039 quickly closes
Close, a certain amount of nitrogen can be pre-charged with the second relief valve 039, the second relief valve 039 can so be rapidly filled with
Nitrogen, realizes the effect of the quick closedown of the second relief valve 039, and the embodiment of the present invention will not be repeated here.
Step 503, the default line pressure pair that target is in charge of target relief valve upstream on line is obtained by monitoring device
Second moment corresponding to the first moment answered and maximum line pressure.
, can be by monitoring device to target after closing all relief valves in m relief valve in addition to target relief valve
The line pressure of relief valve upstream is monitored, and obtains the default line pressure for the target relief valve upstream that target is in charge of on line
Second moment corresponding to corresponding first moment and maximum line pressure.
Illustratively, continue to illustrate by taking Fig. 3 as an example.Second is in charge of in line 037 after formation water attack, due to the second relief valve
039 closes, and therefore, water attack is in charge of line 037 along second and propagated in place to check-valves 033, because check-valves 033 is check valve,
Water attack can not pass through check-valves 033, and when water attack propagates to 033 position of check-valves, water attack is again successively along check-valves 033
The Trunk Line 035 in downstream and first is in charge of line 036 and propagated to the position of the first relief valve 038, in water attack to the first relief valve
During 038 position is propagated, the line pressure of the position of the first relief valve 038 gradually increases, when the first relief valve
During the line pressure of 038 position to default line pressure, the first relief valve 038 is opened, afterwards, the institute of the first relief valve 038
Line pressure in position continues to increase, and then reduces and maintains in pre-set pressure range again, can pass through monitoring device 034
The change of the line pressure of the upstream of the first relief valve 038 on line 036 is in charge of in observation first, determines the upstream of the first relief valve 038
Line pressure be default line pressure corresponding to the line pressure of the first moment and the upstream of the first relief valve 038 be maximum pipeline
Second moment corresponding to pressure.
Step 504, the response time using the difference at the second moment and the first moment as target relief valve.
Obtain the first moment and largest tube corresponding to the default line pressure for the target relief valve upstream that target is in charge of on line
, can be using the difference at the second moment and the first moment as during the response of target relief valve after second moment corresponding to line pressure
It is long.
Illustratively, as shown in Figure 3, it may be determined that the line pressure of the upstream of the first relief valve 038 is default line pressure pair
The first moment answered and the line pressure of the upstream of the first relief valve 038 are the second moment corresponding to maximum line pressure, then will
Response time of the difference at the second moment and the first moment as the first relief valve 038, illustratively, the first moment can be t1,
Second moment can be t2, and the response time of first relief valve 038 can be T=t2-t1.
Step 505, the valve displacement by the electromagnetism displacement sensor target relief valve of target relief valve.
In embodiments of the present invention, each relief valve is provided with electromagnetism displacement transducer, and electromagnetism displacement transducer can be with
Monitoring device electrically connects, and can pass through the valve displacement of the electromagnetism displacement sensor target relief valve of target relief valve.
Illustratively, as shown in figure 3, target relief valve can be the first relief valve 038, therefore, the first pressure release can be passed through
The valve displacement of the first relief valve of electromagnetism displacement sensor 038 of valve 038, the valve of electromagnetism displacement sensor relief valve
The process of door displacement may be referred to correlation technique, and the embodiment of the present invention will not be repeated here.
Step 506, the valve displacement by monitoring device according to target relief valve, determine target relief valve whether in complete
Open state, the aperture for the relief valve being shown in a fully open operation is maximum opening.
After valve displacement by the electromagnetism displacement sensor target relief valve of target relief valve, monitoring can be passed through
Equipment determines whether target relief valve is shown in a fully open operation according to the valve displacement of target relief valve.Alternatively, monitoring device can
To store the valve total displacement of target relief valve, monitoring device may determine that whether the valve displacement of target relief valve is equal to target
The valve total displacement of relief valve, if the valve displacement of target relief valve is equal to the valve total displacement of target relief valve, monitoring is set
It is standby to determine that target relief valve is shown in a fully open operation, if the valve displacement of target relief valve is not equal to the total position of valve of target relief valve
To move, then monitoring device determines that target relief valve is not in full-gear, or, monitoring device can be according to the valve of target relief valve
Door displacement and the valve total displacement of target relief valve, the valve displacement for calculating target relief valve account for the total position of valve of target relief valve
The percentage of shifting, then judges whether the percentage is equal to 100%, if the percentage is equal to 100%, monitoring device determines mesh
Mark relief valve is shown in a fully open operation, if the percentage is not equal to 100%, monitoring device determines that target relief valve is not in standard-sized sheet
State.
Illustratively, as shown in figure 3, monitoring device 034 can store the valve total displacement s of the first relief valve 038, is passed through
The valve displacement of the first relief valve of electromagnetism displacement sensor 038 of one relief valve 038 can be s1, and monitoring device 034 can
To judge whether the valve displacement s1 of first relief valve 038 is equal to the valve total displacement s of the first relief valve 038, if first lets out
The valve displacement s1 of pressure valve 038 is equal to the valve total displacement s of the first relief valve 038, then monitoring device 034 determines the first relief valve
038 is shown in a fully open operation, if the valve displacement s1 of the first relief valve 038 is not equal to the valve total displacement s of the first relief valve 038,
Then monitoring device 034 determines that the first relief valve 038 is not in full-gear.Or monitoring device 034 can be according to the first pressure release
The valve displacement s1 of valve 038 and the first relief valve 038 valve total displacement s, the valve displacement of the first relief valve 038 is calculated
S1 accounts for valve total displacement s percentage, then judges whether the percentage is equal to 100%, if the percentage is equal to 100%,
Monitoring device 034 determines that the first relief valve 038 is shown in a fully open operation, if the percentage is not equal to 100%, monitoring device 034
Determine that the first relief valve 038 is not in full-gear.
Step 507, when target relief valve is shown in a fully open operation, the first pressure transmitter being in charge of according to target on line is adopted
The pressure value of pressure value and second pressure the transmitter collection of collection, determine the pressure differential of the upstream and downstream of target relief valve.
If in step 506, determining, target relief valve is shown in a fully open operation, then can be in charge of according to target on line first
The pressure value of pressure transmitter collection and the pressure value of second pressure transmitter collection, determine the upstream and downstream of target relief valve
Pressure differential.Illustratively, the pressure that monitoring device obtains the first pressure transmitter collection that target is in charge of on line can be first passed through
Value and the pressure value of second pressure transmitter collection, are then in charge of the pressure that the first pressure transmitter on line gathers according to target
Value and the pressure value of second pressure transmitter collection, determine the pressure differential of the upstream and downstream of target relief valve.
Illustratively, please continue to refer to Fig. 3, when the first relief valve 038 is shown in a fully open operation, monitoring device 034 obtains this
When first be in charge of the pressure value P 1 that first pressure transmitter 040 on line 036 gathers and the pressure that second pressure transmitter 046 gathers
Force value P2, the pressure differential Δ p, Δ p=of the upstream and downstream of the first relief valve 038 are determined according to pressure value P 1 and pressure value P 2
P1-P2。
It should be noted that when target relief valve is shown in a fully open operation, monitoring device can also obtain target flow meter
The flow value of measurement, target flow are calculated as the flowmeter being in charge of positioned at target on line, and illustratively, target flow is calculated as first flow
Meter 044, monitoring device 034 obtain the flow value Q that first flowmeter 044 measures, and the embodiment of the present invention will not be repeated here.
Step 508, the flow value measured according to discharge coefficient calculation formula, pressure differential and target flow meter, calculate target
The discharge coefficient of relief valve, target flow are calculated as the flowmeter being in charge of positioned at target on line.
After monitoring device determines the pressure differential of the upstream and downstream of target relief valve and the flow value of target flow meter measurement,
Target relief valve can be calculated according to the flow value measured according to discharge coefficient calculation formula, pressure differential and target flow meter
Discharge coefficient, wherein, discharge coefficient calculation formula is：Cv is discharge coefficient, and Q is flow value, ρ is to flow through
Target is in charge of the density of the liquid of line, ρ0For the density of water, Δ p is pressure differential.
Illustratively, monitoring device is according to the pressure differential Δ p of the upstream and downstream of the first relief valve 038, first flowmeter 044
The flow value Q and discharge coefficient calculation formula of measurementThe flow coefficient Cv of the first relief valve 038 is calculated,
In the embodiment of the present invention, it is water, therefore, ρ=ρ to flow through the first liquid for being in charge of line 0360, discharge coefficient calculation formula can be：So the pressure value that can be gathered according to first pressure transmitter 040, second pressure transmitter 046 gather
The flow value that pressure value and first flowmeter 044 measure, is calculated the Cv values of the first relief valve 038, and the embodiment of the present invention exists
This is repeated no more.
In summary, relief valve response characteristic method of testing provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, all relief valves formation water attack in addition to target relief valve, target pressure release in m relief valve can be used
Valve is any one relief valve in m relief valve, therefore, is changed without the response spy that relief valve can tests more relief valves
Property, solve the problems, such as the response characteristic test process complexity of more relief valves, reached the response spy for simplifying more relief valves
The effect of property test process.
One of ordinary skill in the art will appreciate that hardware can be passed through by realizing all or part of step of above-described embodiment
To complete, by program the hardware of correlation can also be instructed to complete, described program can be stored in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only storage, disk or CD etc..
The foregoing is only presently preferred embodiments of the present invention, be not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent substitution and improvements made etc., it should be included in the scope of the protection.
Claims (10)
1. a kind of relief valve response characteristic test system, it is characterised in that the system includes：
Liquid storage tank, suction pump, check-valves, monitoring device, Trunk Line, m are in charge of line, m relief valve and n first pressure pick-up
Device, n >=m >=2, and m and n are integer；
The first end of the Trunk Line connects with the liquid storage tank, and line described is in charge of in the second end of the Trunk Line with each respectively
First end connection, second end for being in charge of line connected with the liquid storage tank, and the suction pump and the check-valves are pressed
It is successively set on according to from the first end close to the Trunk Line to the first end away from the Trunk Line on the Trunk Line, each
It is described be in charge of on line be provided with the first pressure transmitter and a relief valve, first pressure being in charge of on line
Power transmitter positioned at the upstream of the relief valve being in charge of on line, each first pressure transmitter respectively with the prison
Equipment electrical connection is controlled, the monitoring device is used for by each first pressure transmitter to each institute being in charge of on line
The line pressure for stating relief valve upstream is monitored.
2. system according to claim 1, it is characterised in that the system also includes：M gate valve,
It is each described be in charge of on line be provided with a gate valve, and each gate valve being in charge of on line is positioned at each described point
The downstream of relief valve on pipeline.
3. system according to claim 1, it is characterised in that the system also includes：M flowmeter,
It is in charge of described in each on line and is provided with a flowmeter, and each flowmeter being in charge of on line is located at each institute
State the upstream for the first pressure transmitter being in charge of on line；
Each flowmeter is electrically connected with the monitoring device respectively, and the monitoring device is additionally operable to by each flow
Count and the flow for flowing through each liquid for being in charge of line is monitored.
4. system according to claim 3, it is characterised in that the system also includes：Q second pressure transmitter, q >=
M, and q is integer,
It is in charge of described in each on line and is provided with the second pressure transmitter, each second pressure transmitter being in charge of on line
Positioned at the downstream of each relief valve being in charge of on line, each second pressure transmitter is electric with the monitoring device respectively
Connection, the monitoring device are additionally operable to by each second pressure transmitter to each pressure release being in charge of on line
The line pressure in valve downstream is monitored.
5. system according to claim 4, it is characterised in that
Each relief valve includes：Electromagnetism displacement transducer, each electromagnetism displacement transducer are set with the monitoring respectively
Standby electrical connection；
The electromagnetism displacement transducer of the target relief valve is used for the valve displacement for measuring the target relief valve；
The monitoring device is additionally operable to the valve displacement according to the target relief valve, determines whether the target relief valve is in
Full-gear, the aperture for the relief valve being shown in a fully open operation is maximum opening, when the target relief valve is shown in a fully open operation,
It is in charge of the pressure value of the first pressure transmitter collection on line and the pressure value of second pressure transmitter collection according to the target,
The pressure differential of the upstream and downstream of the target relief valve is determined, according to discharge coefficient calculation formula, the pressure differential and target
The flow value of flowmeter measurement, calculates the discharge coefficient of the target relief valve, and the target flow is calculated as being located at the target
The flowmeter being in charge of on line；
Wherein, the discharge coefficient calculation formula is：Cv is the discharge coefficient, and Q is the flow value, ρ
To flow through the density that the target is in charge of the liquid of line, ρ0For the density of water, Δ p is the pressure differential.
6. system according to claim 1, it is characterised in that the suction pump is main pump, and the system also includes：It is preposition
Feed pump,
The preposition feed pump is arranged on the Trunk Line, and between the main pump and the first end of the Trunk Line.
7. system according to any one of claims 1 to 6, it is characterised in that q=n=m=2, the relief valve are let out for nitrogen
Pressure valve.
8. a kind of relief valve response characteristic method of testing, it is characterised in that for any described relief valve of claim 1 to 7
Response characteristic test system, methods described include：
When measuring the response characteristic of target relief valve, the target relief valve is closed, opens in m relief valve and removes the target
All relief valves and suction pump outside relief valve, the liquid in liquid storage tank is set to be in charge of by Trunk Line and m in line except described
The line of being in charge of that target is in charge of outside line flows to the liquid storage tank, and the target relief valve is any in the m relief valve
One relief valve, it is integer that the target, which is in charge of be in charge of line, m >=2, and m of the line where the target relief valve,；
All relief valves in addition to the target relief valve in the m relief valve are closed, the target is in charge of shape in line
Into water attack；
It is in charge of the default line pressure pair of the target relief valve upstream on line by the monitoring device acquisition target
Second moment corresponding to the first moment answered and maximum line pressure；
Response time using the difference at second moment and first moment as the target relief valve.
9. according to the method for claim 8, it is characterised in that methods described also includes：
Pass through the valve displacement of target relief valve described in the electromagnetism displacement sensor of the target relief valve；
Valve displacement by the monitoring device according to the target relief valve, determine the target relief valve whether in complete
Open state, the aperture for the relief valve being shown in a fully open operation is maximum opening；
When the target relief valve is shown in a fully open operation, it is in charge of what the first pressure transmitter on line gathered according to the target
Pressure value and the pressure value of second pressure transmitter collection, determine the pressure differential of the upstream and downstream of the target relief valve；
The flow value measured according to discharge coefficient calculation formula, the pressure differential and the target flow meter, calculates the target
The discharge coefficient of relief valve, the target flow are calculated as the flowmeter being in charge of positioned at the target on line；
Wherein, the discharge coefficient calculation formula is：Cv is the discharge coefficient, and Q is the flow value, ρ
To flow through the density that the target is in charge of the liquid of line, ρ0For the density of water, Δ p is the pressure differential.
10. method according to claim 8 or claim 9, it is characterised in that m=2, the relief valve is nitrogen relief valve, described
All relief valves in addition to the target relief valve in the m relief valve are closed, including：
All relief valve inflated with nitrogen into the m relief valve in addition to the target relief valve, make in the m relief valve
All relief valves in addition to the target relief valve are closed.
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| CN201610619675.3A CN107664573B (en) | 2016-07-29 | 2016-07-29 | Method and system for testing response characteristic of pressure relief valve |
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| CN201610619675.3A CN107664573B (en) | 2016-07-29 | 2016-07-29 | Method and system for testing response characteristic of pressure relief valve |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN112943991A (en) * | 2021-02-09 | 2021-06-11 | 国家石油天然气管网集团有限公司华南分公司 | Multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by vane motor |
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| CN113167408A (en) * | 2018-08-24 | 2021-07-23 | 内联测试股份有限公司 | System for testing valve |
| CN109611588A (en) * | 2018-12-06 | 2019-04-12 | 河海大学 | A kind of double-direction relief valve |
| CN112943991A (en) * | 2021-02-09 | 2021-06-11 | 国家石油天然气管网集团有限公司华南分公司 | Multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by vane motor |
| CN112943991B (en) * | 2021-02-09 | 2023-01-17 | 国家石油天然气管网集团有限公司华南分公司 | Multi-redundancy electromagnetic pilot type safety water hammer relief valve directly driven by vane motor |
| CN113551902A (en) * | 2021-06-17 | 2021-10-26 | 东风汽车集团股份有限公司 | Decompression valve detection method and system and engine |
| CN113551902B (en) * | 2021-06-17 | 2023-03-03 | 东风汽车集团股份有限公司 | Decompression valve detection method and system and engine |
| CN115814693A (en) * | 2023-02-06 | 2023-03-21 | 北京鹏宇昌亚环保科技有限公司 | Dynamic gas distribution instrument |
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