CN107664573B - Relief valve response characteristic test method and system - Google Patents
Relief valve response characteristic test method and system Download PDFInfo
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- CN107664573B CN107664573B CN201610619675.3A CN201610619675A CN107664573B CN 107664573 B CN107664573 B CN 107664573B CN 201610619675 A CN201610619675 A CN 201610619675A CN 107664573 B CN107664573 B CN 107664573B
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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
Abstract
The present invention discloses a kind of relief valve response characteristic test method and system, belongs to valve testing field.System includes: liquid storage tank, suction pump, check-valves, monitoring device, Trunk Line, is in charge of line, relief valve and pressure transmitter；Trunk Line and it is in charge of line and is connected to respectively with liquid storage tank, Trunk Line is connected to line is in charge of, and suction pump and check-valves are arranged on Trunk Line, is in charge of on line and is provided with relief valve and pressure transmitter, pressure transmitter is electrically connected with monitoring device；When the response characteristic of test target relief valve, water attack is formed using the relief valve in addition to target relief valve, the second moment corresponding with maximum line pressure at default line pressure corresponding first moment for obtaining target relief valve upstream, using the difference at the second moment and the first moment as the response time of target relief valve.The present invention solves the problems, such as that the response characteristic test process of more relief valves is complicated, has achieved the effect that the response characteristic test process for simplifying more relief valves.
Description
Technical field
The present invention relates to valve testing field, in particular to a kind of relief valve response characteristic test method and system.
Background technique
In petroleum transportation industry, relief valve can be usually set in transport line, pressure release is carried out to transport line.And
In order to guarantee the safety of transport line, it is arranged before relief valve in transport line, needs to test using relief valve response characteristic
System tests the response characteristic of relief valve, wherein response characteristic generallys use response time to characterize, and response time refers to
Be pipeline where relief valve the maximum line pressure corresponding moment 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 cracking pressure.
The relevant technologies provide a kind of relief valve response characteristic test macro, 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 macro 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 respectively and is in charge of line 009 and is connected to, and first is in charge of line 008 and second
It is in charge of line 009 to be connected to 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
It sets and is in charge of on line 008 first, gate valve 005 and the setting of pressure transmitter 006 are in charge of on line 009 second.In test relief valve
When 01 response characteristic, relief valve 01 is arranged and is in charge of on line 009 and closes relief valve 01, opened butterfly valve 004, gate valve second
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 flowing, closing butterfly valve 004 makes first to be in charge of formation water attack in line 008,
The pressure rise of entire pipeline, relief valve 01 is opened under the effect of the pressure, monitors 01 institute of relief valve by pressure transmitter 006
In the pressure change of pipeline, and record default line pressure corresponding first moment and maximum line pressure it is corresponding second when
It carves, using the difference at the second moment and the first moment as the response time of 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 relief valve response characteristic test macro in the related technology test more relief valves response characteristic when,
Relief valve is needed replacing, causes the test process to the response characteristic of more relief valves complicated.
Summary of the invention
Test process in order to solve the problems, such as the response characteristic of more relief valves is complicated, and the present invention provides a kind of relief valve
Response characteristic test method and system.The technical solution is as follows:
In a first aspect, a kind of relief valve response characteristic test macro is provided, the system comprises:
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 is connected to the liquid storage tank, the second end of the Trunk Line respectively with each described point
The first end of pipeline is connected to, and each second end for being in charge of line is connected to 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 far 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, each the be in charge of on line
One pressure transmitter is located at the upstream of the relief valve being in charge of on line, each first pressure transmitter respectively with institute
Monitoring device electrical connection is stated, 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.
Optionally, the system also includes m gate valve,
It is in charge of on line described in each and is provided with the 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.
Optionally, the system also includes m flowmeter,
It is in charge of on line described in each and is provided with the flowmeter, and each flowmeter being in charge of on line is positioned at every
The upstream of a first pressure transmitter being in charge of on line；
Each flowmeter is electrically connected with the monitoring device respectively, and the monitoring device is also used to by each described
Flowmeter is monitored the flow for flowing through each liquid for being in charge of line.
Optionally, the system also includes: q second pressure transmitter, q >=m, and q be integer,
It is in charge of on line described in each and is provided with the second pressure transmitter, each second pressure being in charge of on line becomes
The downstream for sending device to be located at each relief valve being in charge of on line, each second pressure transmitter are set with the monitoring respectively
Standby electrical connection, the monitoring device be also used 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.
Optionally, each relief valve includes: electromagnetism displacement sensor, each electromagnetism displacement sensor respectively with
The monitoring device electrical connection；
The electromagnetism displacement sensor of the target relief valve is used to measure the valve displacement of the target relief valve；
The monitoring device is also used 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, is in standard-sized sheet shape in the target relief valve
When state, the pressure value of the acquisition of the first pressure transmitter on line and the pressure of second pressure transmitter acquisition are in charge of according to the target
Force value determines the pressure difference of the upstream and downstream of the target relief valve, according to discharge coefficient calculation formula, the pressure difference and
The flow value of target stream flowmeter measurement, calculates the discharge coefficient of the target relief valve, and the target flow is calculated as being located at described
Target is in charge of the flowmeter on line；
Wherein, the discharge coefficient calculation formula are as follows: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 difference.
Optionally, the suction pump is main pump, the system also includes: preposition feed pump,
The preposition feed pump is arranged on the Trunk Line, and be located at the main pump and the Trunk Line first end it
Between.
Optionally, q=n=m=2, the relief valve are nitrogen relief valve.
Second aspect provides a kind of relief valve response characteristic test method, for pressure release response valve described in first aspect
Characteristic test system, which comprises
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 except target relief valve are in charge of the liquid in liquid storage tank in line by Trunk Line and m and are removed
The target is in charge of the line of being in charge of except line and is flowed 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 the m relief valve in addition to the target relief valve are closed, the target is made to be in charge of line
Interior formation water attack；
The default pipeline pressure for the target relief valve upstream that the target is in charge of on line is obtained by the monitoring device
The second moment corresponding with maximum line pressure at power corresponding first moment；
Using the difference at second moment and first moment as the response time of the target relief valve.
Optionally, the method also includes:
The valve displacement of target relief valve described in electromagnetism displacement sensor by the target relief valve；
By the monitoring device according to the valve displacement of the target relief valve, determine 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 on line is in charge of according to the target and is adopted
The pressure value of pressure value and second pressure the transmitter acquisition of collection, determines the pressure of the upstream and downstream of the target relief valve
Difference；
According to the flow value of discharge coefficient calculation formula, the pressure difference and the target stream flowmeter measurement, described in calculating
The discharge coefficient of target relief valve, the target flow are calculated as being located at the flowmeter that the target is in charge of on line；
Wherein, the discharge coefficient calculation formula are as follows: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 difference.
Optionally, m=2, the relief valve are nitrogen relief valve, and described close removes the target in the m relief valve
All relief valves except relief valve, comprising:
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.
Technical solution provided by the invention has the benefit that
Relief valve response characteristic test method and system provided by the invention, due to the response characteristic of test target relief valve
When, water attack can be formed using all relief valves in m relief valve in addition to target relief valve, target relief valve is m and lets out
Any one relief valve in pressure valve, therefore, the response characteristic of more relief valves can be tested by being changed without relief valve, be solved
The problem of the response characteristic test process complexity of more relief valves has reached the response characteristic test process for simplifying more relief valves
Effect.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
Invention.
Detailed description of the invention
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of usage scenario figure for relief valve response characteristic test macro that the relevant technologies provide；
Fig. 2 is a kind of structural schematic diagram of relief valve response characteristic test macro provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of another relief valve response characteristic test macro provided in an embodiment of the present invention；
Fig. 4 is a kind of flow chart of relief valve response characteristic test method provided in an embodiment of the present invention；
Fig. 5 is the flow chart of another relief valve response characteristic test method provided in an embodiment of the present invention.
The drawings herein are incorporated into the specification and forms part of this specification, and shows and meets implementation of the invention
Example, and be used to explain the principle of the present invention together with specification.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to the present invention make into
It is described in detail to one step, it is clear that the described embodiments are only some of the embodiments of the present invention, rather than whole implementation
Example.Based on the embodiments of the present invention, obtained by those of ordinary skill in the art without making creative efforts
All other embodiment, shall fall within the protection scope of the present invention.
Referring to FIG. 2, it illustrates a kind of knots of relief valve response characteristic test macro 02 provided in an embodiment of the present invention
Structure schematic diagram, referring to fig. 2, which 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 marking in Fig. 2) of Trunk Line 025 is connected to liquid storage tank 021, and the second end of Trunk Line 025 is (in Fig. 2
Do not mark) it is connected to 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) be connected to 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 the first pressure transmitter 028 on line 026 and is located at and is each in charge of letting out on line 026
The upstream of pressure valve 027, each first pressure transmitter 028 are electrically connected with monitoring device 024 respectively, and monitoring device 024 is for leading to
Each first pressure transmitter 028 is crossed to be monitored the line pressure of each 027 upstream of relief valve 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 for the first relief valve upstream that first is in charge of on line is obtained by monitoring device 024
The second moment corresponding with maximum line pressure at power corresponding first moment, using 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 conclusion relief valve response characteristic test macro provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, can be using all relief valves formation water attack in m relief valve in addition to target relief valve, target pressure release
Valve is any one relief valve in m relief valve, and therefore, the response spy of more relief valves can be tested by being changed without relief valve
Property, it solves the problems, such as that the response characteristic test process of more relief valves is complicated, has reached the response spy for simplifying more relief valves
The effect of property test process.
Referring to FIG. 3, it illustrates another relief valve response characteristic test macros 03 provided in an embodiment of the present invention
Structural schematic diagram, referring to Fig. 3, which 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 is illustrated by taking m=n=2 as an example,
It may include first being in charge of line 036 and second and being in charge of line 037 that then m, which is in charge of line, and m relief valve may include the first relief valve
038 and second relief valve 039, n first pressure transmitter may include first pressure transmitter 040 and first pressure transmitter
041.In embodiments of the present invention, monitoring device 034 can for computer etc., Trunk Line 035 and be each in charge of line can be by more
Segment pipe connects to be formed, and the embodiment of the present invention is not construed as limiting this.
The first end (not marking in Fig. 3) of Trunk Line 035 is connected to liquid storage tank 031, and second end (not marking in Fig. 3) is respectively
It is connected to each first end (not marked in Fig. 3) for being in charge of line, is each in charge of the second end (not marking in Fig. 3) and liquid storage tank of line
031 connection.Illustratively, as shown in figure 3, first end that the second end of Trunk Line 035 is in charge of line 036 with first respectively and second point
The first end of pipeline 037 is connected to, 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 far 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 separate Trunk Line 035
First end be successively set on Trunk Line 035 it also will be understood that are as follows: 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 first pressure transmitter 041 and the second relief valve 039, 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 is electrically connected with monitoring device 034 respectively, and monitoring device 034 is used to pass through each first
Pressure transmitter is monitored the line pressure of each relief valve upstream being in charge of on line, and optionally, 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 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
It is supervised with the line pressure for being in charge of first 038 upstream of the first relief valve on line 036 by first pressure transmitter 040
Control, the line pressure that 039 upstream of the second relief valve 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 except pressure valve form water attack, obtain target by monitoring device 034 and are in charge of the target relief valve upstream on line
The second moment corresponding with maximum line pressure at default line pressure corresponding first moment, 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 for
It is illustrated.Specifically, the first relief valve 038 can be closed and the cracking pressure for setting 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 to the flowing of liquid storage tank 031, during liquid flowing, closing suddenly
Second relief valve 039 makes second to be in charge of in line 037 and forms water attack, and it is in place to 033 institute of check-valves that water attack along second is in charge of line 037
Propagation is set, since check-valves 033 is check valve, water attack can not pass through check-valves 033, therefore, when water attack propagates to check-valves
When 033 position, water attack is successively in charge of line 036 to the first pressure release along the Trunk Line 035 in 033 downstream of check-valves and first again
038 position of valve is propagated, during water attack is propagated to 038 position of the first relief valve, where the first relief valve 038
The line pressure of position is gradually increased, when line pressure to the default line pressure of 038 position of the first relief valve, first
Relief valve 038 is opened, and later, the line pressure of 038 position of the first relief valve continues to increase, and is then reduced and is maintained again
In pre-set pressure range, the pipe for 038 upstream of the first relief valve that first is in charge of on line 036 can be observed by monitoring device 034
The variation of line pressure determines that the line pressure of 038 upstream of the first relief valve is default line pressure corresponding first moment and the
The line pressure of one relief valve, 038 upstream is maximum line pressure corresponding second moment, when then by the second moment with first
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, details are not described herein for the embodiment of the present invention.
Further, with continued reference to FIG. 3, the relief valve response characteristic test macro 03 further include: m gate valve, each
The gate valve be in charge of on line and be provided with a gate valve, and be each in charge of on line is located at the downstream for the relief valve being each in charge of on line, often
A gate valve can be used for adjusting the flow for flowing through each liquid for being in charge of line.In embodiments of the present invention, m gate valve may include
First gate valve 042 and the second gate valve 043, the setting of the first gate valve 042 are in charge of on line 036 first and are located at the first relief valve 038
Downstream, the second downstream for being in charge of on line 037 and being located at the second relief valve 03 is arranged in the second gate valve 043, and the first gate valve 042 is used
In adjusting the flow for flowing through the liquid that first is in charge of line 036, the second gate valve 043 flows through the second liquid for being in charge of line 037 for adjusting
The flow of body, details are not described herein for the embodiment of the present invention.
Further, with continued reference to FIG. 3, the relief valve response characteristic test macro 03 further include: m flowmeter, often
A flowmeter for being provided with a flowmeter, and being each in charge of on line of being in charge of on line is located at the first pressure change being each in charge of on line
Send the upstream of device；Each flowmeter is electrically connected with monitoring device 034 respectively, and monitoring device 034 is also used to through each flowmeter
The flow for flowing through each liquid for being in charge of line is monitored, optionally, monitoring device 034 is also used to carry out the flow of pipeline
Storage, display etc., the embodiment of the present invention is not construed as limiting 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, the setting of first flowmeter 044 is in charge of on line 036 first, and first-class
Meter 044 is electrically connected by signal wire with monitoring device 034, and monitoring device 034 can be by first flowmeter 044 to flowing through the
One flow for being in charge of the liquid of line 036 is monitored, and the setting of second flowmeter 045 is in charge of on line 037 second, 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.Optionally, in embodiments of the present invention, flowmeter can be external clamping ultrasound
Wave flowmeter.
Further, with continued reference to FIG. 3, the relief valve response characteristic test macro 03 further include: q second pressure becomes
Sending device, q >=m, and q is integer, 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
The downstream for sending device to be located at the relief valve being each in charge of on line, each second pressure transmitter are electrically connected with monitoring device 034 respectively,
Specifically, be each in charge of the second pressure transmitter on line to be located between the relief valve and gate valve be each in charge of on line, and with
Monitoring device 034 is electrically connected, and monitoring device 034 is also used to through 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 may include
Second pressure transmitter 046 and second pressure transmitter 047, the setting of second pressure transmitter 046 are in charge of on line 036 first,
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 is electrically connected with monitoring device 034, and monitoring device 034 can be in charge of on line 036 by second pressure transmitter 046 first
The line pressure of 038 upstream of the first relief valve be monitored, the setting of second pressure transmitter 047 is in charge of on line 037 second,
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 is electrically connected with monitoring device 034, and monitoring device 034 can be in charge of on line 037 by second pressure transmitter 047 second
The line pressure of 039 upstream of the second relief valve be monitored.
Further, each relief valve includes: electromagnetism displacement sensor (being not shown in Fig. 3), each electromagnetism displacement sensing
Device is electrically connected with monitoring device 034 (is not shown in Fig. 3) respectively, and optionally, electromagnetism displacement sensor can be built in relief valve
In, the embodiment of the present invention is not construed as limiting this；Illustratively, each electromagnetism displacement sensor passes through signal wire and monitoring device respectively
034 electrical connection, it is not limited in the embodiment of the present invention.
The electromagnetism displacement sensor of target relief valve is used to measure the valve displacement of 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, when target relief valve is shown in a fully open operation, is in charge of the first pressure on line according to target and becomes
The pressure value for pressure value and second pressure the transmitter acquisition for sending device to acquire, determines the pressure of the upstream and downstream of target relief valve
Difference calculates the flow system of target relief valve according to the flow value of discharge coefficient calculation formula, pressure difference and target stream flowmeter measurement
Number, target flow are calculated as being located at the flowmeter that target is in charge of on line；Wherein, discharge coefficient calculation formula are as follows: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 close of water
Degree, Δ p are pressure difference.
Optionally, the embodiment of the present invention is that be in charge of line be first to be in charge of line for the first relief valve 038, target with target relief valve
036, and be illustrated so that the liquid in liquid storage tank 031 is water as an example.The electromagnetism displacement sensor of first relief valve 038 can be surveyed
038 valve displacement of one relief valve of flow control 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, let out first
When pressure valve 038 is shown in a fully open operation, monitoring device 034 obtains the first first pressure transmitter 040 being in charge of on line 036 at this time and adopts
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 acquire 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 are as follows:ρ is the density for flowing through the liquid that first is in charge of line 036, ρ0For the density of water,
In the embodiment of the present invention, flowing through the liquid that first is in charge of line 036 is water, therefore, ρ=ρ0, discharge coefficient calculation formula can be with are as follows:So can be acquired according to the pressure value of the acquisition of first pressure transmitter 040, second pressure transmitter 046
The flow value that pressure value and first flowmeter 044 measure, is calculated the Cv value of the first relief valve 038, similarly, can also determine
The Cv value 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 sensor 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.Alternatively, monitoring device 034 is in the electromagnetism displacement sensor hair 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 valve total displacement of the first relief valve 038,
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 percent), 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, with continued reference to FIG. 3, the relief valve
Response characteristic test macro 03 further include: preposition feed pump 048, preposition feed pump 048 are arranged on Trunk Line 035, and preposition
Feed pump 048 is 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 setting feed pump 048 can be very good the safety of protection main pump, and details are not described herein for the embodiment of the present invention.
Optionally, in embodiments of the present invention, relief valve is nitrogen relief valve.When closing relief valve, it can use and fill
Nitrogen system is to relief valve inflated with nitrogen, and under the action of nitrogen, relief valve quick closedown can quickly produce water attack in this way,
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, details are not described herein for the embodiment of the present invention.It should be noted that in order to make the relief valve quick closedown for manufacturing water attack, it can be with
It is pre-charged with a certain amount of nitrogen in the relief valve for manufacturing water attack, relief valve can be made to be rapidly filled with nitrogen in this way, it is real
The effect of existing relief valve quick closedown, details are not described herein for the embodiment of the present invention.
In conclusion relief valve response characteristic test macro provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, can be using all relief valves formation water attack in m relief valve in addition to target relief valve, target pressure release
Valve is any one relief valve in m relief valve, and therefore, the response spy of more relief valves can be tested by being changed without relief valve
Property, it solves the problems, such as that the response characteristic test process of more relief valves is complicated, has reached the response spy for simplifying more relief valves
The effect of property test process.
Relief valve response characteristic test macro in the related technology manufactures water attack using butterfly valve, by the limit of butterfly valve bearing capacity
The operating pressure of system, pipeline cannot be too big, and relief valve response characteristic test macro in the related technology is caused to be unable to test big mouth
Diameter, big flow relief valve response characteristic, current maximum can only testing beam diameter be DN100 (unit: rice), maximum stream flow is
100m3The response characteristic of the relief valve of/h (cubic meter is per hour), if heavy caliber relief valve is mounted on the lesser pipeline of caliber
On tested, due to the limited diameter of pipeline, cause the ability of pipeline conveying liquid limited, cannot simulate well in great Kou
Influence of the big flow to relief valve response time under diameter pipeline, the operating condition at the scene of can not really simulating, to can not accurately survey
The response time of relief valve is tried, relief valve response characteristic test macro in the related technology can not be suitable for pipeline flow and be
3000m3The test of the response characteristic of the relief valve of/h.Relief valve response characteristic test macro provided in an embodiment of the present invention, is adopted
Water attack is manufactured with relief valve, since the bearing capacity of relief valve is preferable, biggish line pressure can be born, so that this
Inventive embodiments provide relief valve response characteristic test macro can be used for testing heavy caliber, big flow relief valve response
Characteristic, and the response time of relief valve can be accurately tested, can be adapted for pipeline flow is 3000m3The relief valve of/h
The test of response characteristic.
It is special that relief valve response characteristic test macro provided in an embodiment of the present invention can be applied to pressure release response valve hereafter
Property test method, relief valve response characteristic test method may refer to the description in hereafter each embodiment in the embodiment of the present invention.
Referring to FIG. 4, it illustrates a kind of processes of relief valve response characteristic test method provided in an embodiment of the present invention
Figure, the relief valve response characteristic test method can be used for Fig. 2 or relief valve response characteristic test macro shown in Fig. 3, referring to
Fig. 4, the relief valve response characteristic test method may 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 except target relief valve are in charge of the liquid in liquid storage tank in line by Trunk Line and m and are removed
Target is in charge of the line of being in charge of except line and is flowed 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.
All relief valves in m step 402, closing relief valve in addition to target relief valve, make target be in charge of shape in line
At water attack.
Step 403 obtains the default line pressure pair that target is in charge of the target relief valve upstream on line by monitoring device
The second moment corresponding with maximum line pressure at the first moment answered.
Step 404, using the difference at the second moment and the first moment as the response time of target relief valve.
In conclusion relief valve response characteristic test method provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, can be using all relief valves formation water attack in m relief valve in addition to target relief valve, target pressure release
Valve is any one relief valve in m relief valve, and therefore, the response spy of more relief valves can be tested by being changed without relief valve
Property, it solves the problems, such as that the response characteristic test process of more relief valves is complicated, has reached the response spy for simplifying more relief valves
The effect of property test process.
Optionally, which can also include:
Pass through the valve displacement of the electromagnetism displacement sensor target relief valve of target relief valve；
By monitoring device according to the valve displacement of target relief valve, determine 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 of the acquisition of the first pressure transmitter on line is in charge of according to target
The pressure value of value and the acquisition of second pressure transmitter, determines the pressure difference of the upstream and downstream of target relief valve；
According to the flow value of discharge coefficient calculation formula, pressure difference and target stream flowmeter measurement, target relief valve is calculated
Discharge coefficient, target flow are calculated as being located at the flowmeter that target is in charge of on line；
Wherein, discharge coefficient calculation formula are as follows: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 difference.
Optionally, m=2, relief valve are nitrogen relief valve, are closed all in addition to target relief valve in m relief valve
Relief valve, comprising:
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 except pressure valve are closed.
All the above alternatives can form alternative embodiment of the invention using any combination, herein no longer
It repeats one by one.
In conclusion relief valve response characteristic test method provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, can be using all relief valves formation water attack in m relief valve in addition to target relief valve, target pressure release
Valve is any one relief valve in m relief valve, and therefore, the response spy of more relief valves can be tested by being changed without relief valve
Property, it solves the problems, such as that the response characteristic test process of more relief valves is complicated, has reached the response spy for simplifying more relief valves
The effect of property test process.
Referring to FIG. 5, it illustrates the streams of another relief valve response characteristic test method provided in an embodiment of the present invention
Cheng Tu, the relief valve response characteristic test method can be used for Fig. 2 or relief valve response characteristic test macro shown in Fig. 3, this
Embodiment is carried out so that the relief valve response characteristic test method is for relief valve response characteristic test macro 03 shown in Fig. 3 as an example
Illustrate, referring to Fig. 5, which may 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 except target relief valve are in charge of the liquid in liquid storage tank in line by Trunk Line and m and are removed
Target is in charge of the line of being in charge of except line and is flowed 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 a relief valve in addition to target relief valve make the liquid in liquid storage tank pass through Trunk Line and m
A line of being in charge of being in charge of in line in addition to target is in charge of line is flowed to liquid storage tank.
Illustratively, as shown in figure 3, the embodiment of the present invention with target relief valve is that the first relief valve 038, target are in charge of line and are
First is in charge of for line 036 and is illustrated, 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 cracking 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 letting out to first
038 inflated with nitrogen of pressure valve closes the first relief valve 038, by deflating to the second relief valve 039, makes the second relief valve 039
It opens, details are not described herein for the embodiment of the present invention.
All relief valves in m step 502, closing relief valve in addition to target relief valve, make target be in charge of shape in line
At water attack.
All relief valves in m relief valve in addition to target relief valve can be closed, is in charge of target in line and forms water
It hits.
Illustratively, with continued reference to FIG. 3, closing the first relief valve 038, the second relief valve 039, suction pump 032, preceding is opened
After setting 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 flowing, can close the second relief valve 039 suddenly, second is in charge of line 037
Interior liquid forms water attack due to inertia.Wherein it is possible to make to 039 inflated with nitrogen of the second relief valve by inflated with nitrogen system
Two relief valves, 039 quick closedown, 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 can be made relief valve quick closedown and be opened by setting nitrogen relief valve
It opens, more really simulates the actual condition of the first relief valve 038.It should be noted that in order to close the second relief valve 039 quickly
It closes, a certain amount of nitrogen can be pre-charged in the second relief valve 039, the second relief valve 039 can in this way be rapidly filled with
Nitrogen realizes the effect of 039 quick closedown of the second relief valve, and details are not described herein for the embodiment of the present invention.
Step 503 obtains the default line pressure pair that target is in charge of the target relief valve upstream on line by monitoring device
The second moment corresponding with maximum line pressure at the first moment answered.
It, 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
The second moment corresponding with maximum line pressure at corresponding first moment.
Illustratively, continue to be illustrated 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 is propagated in place to check-valves 033, since 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 is propagated to 038 position of the first relief valve, in water attack to the first relief valve
During 038 position is propagated, the line pressure of 038 position of the first relief valve is gradually increased, when the first relief valve
When the line pressure of 038 position to default line pressure, the first relief valve 038 is opened, later, 038 institute of the first relief valve
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 variation of the line pressure of 038 upstream of the first relief valve on line 036 is in charge of in observation first, determines 038 upstream of the first relief valve
Line pressure be the line pressure of default line pressure corresponding first moment and 038 upstream of the first relief valve be maximum pipeline
Pressure corresponding second moment.
Step 504, using the difference at the second moment and the first moment as the response time of target relief valve.
Obtain default line pressure corresponding first moment and largest tube that target is in charge of the target relief valve upstream on line
It, can be using the difference at the second moment and the first moment as when the response of target relief valve after line pressure corresponding second moment
It is long.
Illustratively, as shown in figure 3, can determine that the line pressure of 038 upstream of the first relief valve is default line pressure pair
The line pressure for 038 upstream of the first moment and the first relief valve answered is maximum line pressure corresponding second moment, 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 sensor, and electromagnetism displacement sensor can be with
Monitoring device electrical connection, can pass through the valve displacement of the electromagnetism displacement sensor target relief valve of target relief valve.
Illustratively, as shown in figure 3, therefore target relief valve can pass through the first pressure release for the first relief valve 038
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 can refer to the relevant technologies, and details are not described herein for the embodiment of the present invention.
Step 506, by monitoring device according to the valve displacement of target relief valve, determine whether target relief valve is in complete
Open state, the aperture for the relief valve being shown in a fully open operation are 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.Optionally, 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
It moves, then monitoring device determines that target relief valve is not in full-gear, alternatively, monitoring device can be according to the valve of target relief valve
The valve total displacement of door displacement and 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, pass 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.Alternatively, monitoring device 034 can be according to the first pressure release
The valve total displacement s of the valve displacement s1 of valve 038 and the first relief valve 038, are calculated the valve displacement of the first relief valve 038
S1 accounts for the percentage of valve total displacement s, 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 on line is in charge of according to target and is adopted
The pressure value of pressure value and second pressure the transmitter acquisition of collection, determines the pressure difference 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 acquisition and the pressure value of second pressure transmitter acquisition, determine the upstream and downstream of target relief valve
Pressure difference.Illustratively, the pressure that monitoring device obtains the first pressure transmitter acquisition that target is in charge of on line can be first passed through
The pressure value of value and the acquisition of second pressure transmitter, is then in charge of the pressure of the acquisition of the first pressure transmitter on line according to target
The pressure value of value and the acquisition of second pressure transmitter, determines the pressure difference of the upstream and downstream of target relief valve.
Illustratively, with continued reference 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 acquires and the pressure that second pressure transmitter 046 acquires
Force value P2 determines the pressure differential Δ p, Δ p=of the upstream and downstream of the first relief valve 038 according to pressure value P 1 and pressure value P 2
P1-P2。
It should be noted that monitoring device can also obtain target stream meter when target relief valve is shown in a fully open operation
The flow value of measurement, target flow are calculated as being located at the flowmeter that target is in charge of 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 details are not described herein for the embodiment of the present invention.
Step 508, according to the flow value of discharge coefficient calculation formula, pressure difference and target stream flowmeter measurement, calculate target
The discharge coefficient of relief valve, target flow are calculated as being located at the flowmeter that target is in charge of on line.
After monitoring device determines the pressure difference of the upstream and downstream of target relief valve and the flow value of target stream flowmeter measurement,
Target relief valve can be calculated according to the flow value according to discharge coefficient calculation formula, pressure difference and target stream flowmeter measurement
Discharge coefficient, wherein discharge coefficient calculation formula are as follows: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 difference.
Illustratively, pressure differential Δ p of the monitoring device according to 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 for calculating the first relief valve 038,
In the embodiment of the present invention, flowing through the liquid that first is in charge of line 036 is water, therefore, ρ=ρ0, discharge coefficient calculation formula can be with are as follows:So can be acquired according to the pressure value of the acquisition of first pressure transmitter 040, second pressure transmitter 046
The flow value that pressure value and first flowmeter 044 measure, is calculated the Cv value of the first relief valve 038, the embodiment of the present invention exists
This is repeated no more.
In conclusion relief valve response characteristic test method provided in an embodiment of the present invention, due to test target relief valve
Response characteristic when, can be using all relief valves formation water attack in m relief valve in addition to target relief valve, target pressure release
Valve is any one relief valve in m relief valve, and therefore, the response spy of more relief valves can be tested by being changed without relief valve
Property, it solves the problems, such as that the response characteristic test process of more relief valves is complicated, has reached the response spy for simplifying more relief valves
The effect of property test process.
Those of ordinary skill in the art will appreciate that realizing that all or part of the steps of above-described embodiment can pass through hardware
It completes, relevant hardware can also be instructed to complete by program, the program can store in a kind of computer-readable
In storage medium, storage medium mentioned above can be read-only memory, disk or CD etc..
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of relief valve response characteristic test macro, which is characterized in that the system comprises:
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 is connected to the liquid storage tank, and the second end of the Trunk Line described is in charge of line with each respectively
First end connection, the second end for being in charge of line is connected to the liquid storage tank, and the suction pump and the check-valves are pressed
It is successively set on the Trunk Line according to from the first end close to the Trunk Line to the first end far from 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 is located 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 through 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, which is characterized in that the system also includes: m gate valve,
It is each described be in charge of on line be provided with the gate valve, and each gate valve being in charge of on line is located at each described point
The downstream of relief valve on pipeline.
3. system according to claim 1, which is characterized in that the system also includes: m flowmeter,
It is in charge of on line described in each and is provided with the 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 also used to through each flow
It counts and the flow for flowing through each liquid for being in charge of line is monitored.
4. system according to claim 3, which is characterized in that the system also includes: q second pressure transmitter, q >=
M, and q is integer,
It is in charge of on line described in each 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 also used to through 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, which is characterized in that
Each relief valve includes: electromagnetism displacement sensor, and each electromagnetism displacement sensor is set with the monitoring respectively
Standby electrical connection；
The electromagnetism displacement sensor of target relief valve is used to measure the valve displacement of the target relief valve, the target relief valve
For any one relief valve in the m relief valve；
The monitoring device is also used to the valve displacement according to the target relief valve, determines whether the target relief valve is in
The aperture of full-gear, 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 acquisition of the first pressure transmitter on line and the pressure value of second pressure transmitter acquisition according to target, determines
The pressure difference of the upstream and downstream of the target relief valve, according to discharge coefficient calculation formula, the pressure difference and target flow
The flow value for counting measurement, calculates the discharge coefficient of the target relief valve, the target is in charge of line for the target relief valve institute
It is being in charge of line, the target flow is calculated as being located at the flowmeter that the target is in charge of on line；
Wherein, the discharge coefficient calculation formula are as follows: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 difference.
6. system according to claim 1, which is characterized in that the suction pump is main pump, 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, which is characterized in that q=n=m=2, the relief valve are let out for nitrogen
Pressure valve.
8. a kind of relief valve response characteristic test method, which is characterized in that for any relief valve of claim 1 to 7
Response characteristic test macro, which comprises
When measuring the response characteristic of target relief valve, the target relief valve is closed, opens and removes the target in m relief valve
All relief valves and suction pump except relief valve are in charge of the liquid in liquid storage tank in line except target by Trunk Line and m
It is in charge of the line of being in charge of except line to flow to the liquid storage tank, the target relief valve is any one in the m relief valve
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 the m relief valve in addition to the target relief valve are closed, the target is made to be in charge of shape in line
At water attack；
The default line pressure pair for the target relief valve upstream that the target is in charge of on line is obtained by the monitoring device
The second moment corresponding with maximum line pressure at the first moment answered；
Using the difference at second moment and first moment as the response time of the target relief valve.
9. according to the method described in claim 8, it is characterized in that, the method also includes:
The valve displacement of target relief valve described in electromagnetism displacement sensor by the target relief valve；
By the monitoring device according to the valve displacement of the target relief valve, determine whether the target relief valve is in complete
Open state, the aperture for the relief valve being shown in a fully open operation are maximum opening；
When the target relief valve is shown in a fully open operation, the acquisition of the first pressure transmitter on line is in charge of according to the target
The pressure value of pressure value and the acquisition of second pressure transmitter, determines the pressure difference of the upstream and downstream of the target relief valve；
According to the flow value of discharge coefficient calculation formula, the pressure difference and the target stream flowmeter measurement, the target is calculated
The discharge coefficient of relief valve, the target flow are calculated as being located at the flowmeter that the target is in charge of on line；
Wherein, the discharge coefficient calculation formula are as follows: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 difference.
10. method according to claim 8 or claim 9, which is characterized in that m=2, the relief valve is nitrogen relief valve, described
Close all relief valves in the m relief valve in addition to the target relief valve, comprising:
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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| NO344761B1 (en) * | 2018-08-24 | 2020-04-14 | Inline Test As | Portable system for testing a valve in a process plant |
| CN109611588B (en) * | 2018-12-06 | 2020-07-17 | 河海大学 | Two-way relief valve |
| 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 |
| 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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| KR20140081063A (en) * | 2012-12-21 | 2014-07-01 | 주식회사 두산 | Valve performance tester |
| CN103308293B (en) * | 2013-05-17 | 2016-04-13 | 武汉工程大学 | A kind of high temperature valve detection experiment system |
| CN104359661B (en) * | 2014-11-11 | 2017-04-12 | 浙江工业大学 | universal valve performance test device |
| CN205331527U (en) * | 2015-12-30 | 2016-06-22 | 上海瑞控阀门有限公司 | Nitrogen gas formula water hammer relief valve |
| CN205388531U (en) * | 2016-02-26 | 2016-07-20 | 余姚市三力信电磁阀有限公司 | Large -scale aqueous vapor solenoid valve detecting system that synthesizes |
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