CN106482973A - Plate type heat exchanger liquid phase medium pressure fall-off test system and its method of testing - Google Patents
Plate type heat exchanger liquid phase medium pressure fall-off test system and its method of testing Download PDFInfo
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- CN106482973A CN106482973A CN201611029975.2A CN201611029975A CN106482973A CN 106482973 A CN106482973 A CN 106482973A CN 201611029975 A CN201611029975 A CN 201611029975A CN 106482973 A CN106482973 A CN 106482973A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The present invention relates to a kind of plate type heat exchanger liquid phase medium pressure fall-off test system.This test system includes tank case and plate type heat exchanger, the liquid test pipeline section that gone out by the test of first circulation feed liquor pipeline section, first circulation being communicated between tank case and plate type heat exchanger each other constitutes first circulation loop, and goes out liquid test pipeline section by second circulation feed liquor test pipeline section, second circulation and constitute second circulation loop；Working medium conveyor module and Flow-rate adjustment module are provided with first circulation feed liquor test pipeline section and second circulation feed liquor test pipeline section；Plate type heat exchanger is provided with pressure measuring module with four interfaces of closed circuit；Exhaust module is additionally provided with first circulation loop and second circulation loop.Present invention also offers the three kinds of method of testings matched with this test system.Present system simple structure, regulation are quick and convenient, and coverage test scope is wide.The present invention can effectively improve impact of the plate deformation factor to measurement result on the premise of pressure fall-off test technological requirement is met.
Description
Technical field
The invention belongs to heat exchanger performance analysis and test control technology field, and in particular to a kind of plate type heat exchanger liquid phase
Media pressure drop test system and its method of testing.
Background technology
The pressure drop that liquid phase medium flow resistance causes in plate type heat exchanger, is that of its economical operation effect of differentiation is important
Factor.The exploitation and existing product power demand in technological process that plate type heat exchanger pressure fall-off test is worked as heat exchanger new product
Determination, reliable data supporting is provided.As Large Plate Heat Exchangers are in the extensive application of nuclear power field, plate size is more next
Bigger, plate more and more thinner, during actual test, plate Light deformation problem brings considerable influence to test result.
At present, the test system of plate type heat exchanger liquid phase medium flow resistance is mainly according to standard《JB/T10379》In
" liquid-liquid measurement system " as shown in Figure 1 is set up.The system is mainly used in plate type heat exchanger thermal performance test, while also may be used
Carry out pressure drop performance test.Plate type heat exchanger is warm, cold media of both sides interface is respectively connected to corresponding autonomous system pipeline, each other Wu dry
Disturb.Particularly, the plate type heat exchanger d in Fig. 1 cold medium outlet by pipeline be sequentially connected cooler c, cooling tower b and
Liquid storage vessel a, constitutes cold medium loop finally by cold medium pump is connected with cold medium import；Plate type heat exchanger d in Fig. 1
Thermal medium outlet liquid storage vessel, thermal medium pump are sequentially connected by pipeline, be connected with thermal medium entrance finally by heater e
And constitute thermal medium loop.Cold medium loop and thermal medium loop in Fig. 1 is two not joining independent pipelines each other
System.
But for the only user of pressure fall-off test demand, such test system because include temperature control modules,
Technique is relative complex, and cost of investment is high, and floor space is wide；And during actual test, because of the not clear and definite pressure fall-off test side of standard
Case, exist both sides working medium sequencing flow into plate type heat exchanger, plate type heat exchanger both sides tunnel inlets pressure differential larger situations such as,
The pressurized Light deformation of heat exchange plate is caused, this brings very important impact to plate type heat exchanger pressure fall-off test result.
Content of the invention
In order to solve above-mentioned technical problem, an object of the present invention there is provided a kind of plate type heat exchanger liquid phase medium pressure
Drop test system, this test system on the premise of pressure fall-off test technological requirement is met, effectively can improve plate deformation because
Impact of the element to measurement result, while investment reduction cost.
In order to the purpose of the present invention is realized, technical scheme below is present invention employs：
A kind of plate type heat exchanger liquid phase medium pressure fall-off test system, including tank case and plate type heat exchanger, the tank case and plate
The connection test of first circulation feed liquor pipeline section, first circulation each other is provided between formula heat exchanger goes out liquid test pipeline section and second
Circulation feed liquor test pipeline section, second circulation go out liquid test pipeline section, and the first circulation feed liquor test pipeline section, first circulation go out liquid survey
Test tube section constitutes first circulation loop, and the second circulation feed liquor test pipeline section, second circulation go out liquid test pipeline section and constitute second
Closed circuit；
Working medium conveyor module is provided with the first circulation feed liquor test pipeline section and second circulation feed liquor test pipeline section
With Flow-rate adjustment module；
First circulation feed liquor test pipeline section, first circulation go out liquid test pipeline section, second circulation feed liquor test pipeline section, the
Two recycle liquid test pipeline section is provided with pressure measuring module with the junction of plate type heat exchanger；
This test system is also arranged on the respective at least one test pipeline section in first circulation loop and second circulation loop
There is exhaust module.
Preferably, the caliber and pipeline of the first circulation feed liquor test pipeline section and second circulation feed liquor test pipeline section are long
Degree correspondent equal, first circulation go out caliber and the length of pipe correspondence phase that liquid test pipeline section, second circulation go out liquid test pipeline section
Deng；Working medium conveyor module and Flow-rate adjustment module are on first circulation feed liquor test pipeline section and second circulation feed liquor test pipeline section
Installation site correspondence is identical, and the model correspondence of corresponding component is identical.
Preferably, the working medium conveyor module be arranged on first circulation feed liquor test pipeline section on the first variable frequency pump and
The second variable frequency pump being arranged on second circulation feed liquor test pipeline section.
It is further preferred that the Flow-rate adjustment module be arranged on first circulation feed liquor test pipeline section on from tank case extremely
The first flowmeter and the first regulating valve of plate type heat exchanger order arrangement, and for being arranged on second circulation feed liquor test pipeline section
The second flowmeter that arranges from tank case to plate type heat exchanger order and the second regulating valve；First variable frequency pump is arranged on tank case
On first circulation feed liquor test pipeline section between first flowmeter, second variable frequency pump is arranged on tank case and second flowmeter
Between second circulation feed liquor test pipeline section on.
Preferably, the pressure measuring module is pressure transmitter.
Preferably, the exhaust module is to be arranged on the first row air valve that first circulation goes out on liquid test pipeline section, Yi Jishe
Put second circulation go out liquid test pipeline section on second row air valve, the first row air valve first circulation go out liquid test pipeline section and
The installation site that second row air valve goes out on liquid test pipeline section in second circulation corresponds to identical.
It is further preferred that this test system also includes pressure balance module, the pressure balance module includes to connect
One circulation feed liquor test pipeline section and second circulation feed liquor test the pressure-equalizing pipe of pipeline section, the pressure-equalizing pipe and first circulation
Feed liquor test pipeline section junction be arranged on first circulation feed liquor test pipeline section on pressure measuring module and the first regulating valve it
Between, the pressure-equalizing pipe is arranged on second circulation feed liquor test pipeline section with the junction of second circulation feed liquor test pipeline section
Between pressure measuring module and the second regulating valve；The pressure-equalizing pipe is on the pipe shaft near first circulation feed liquor test pipeline section
The first balanced valve is provided with, it is flat that the pressure-equalizing pipe is provided with second on the pipe shaft near second circulation feed liquor test pipeline section
Weighing apparatus valve.
The second object of the present invention provides a kind of method of testing using above-mentioned test system, and method of testing has three skills
Art scheme, difference are as follows：
First technical scheme：A kind of method of testing using aforementioned plate type heat exchanger liquid phase medium pressure fall-off test system,
Plate type heat exchanger be respectively connected with the working medium in logical two passage for uniform flow with first circulation loop and second circulation loop
Flowing, this method of testing comprise the steps：
S1, the cutting-off valve being first turned on first circulation loop and second circulation loop, start the first variable frequency pump and the
Two variable frequency pumps, the first regulating valve of standard-sized sheet and the second regulating valve, open first row air valve, second row air valve, in pipeline to be drained
After fixed gas, first row air valve, second row air valve is closed；
The flow signal of S2, collection first flowmeter and second flowmeter, adjusts the first variable frequency pump, the second frequency conversion pump work
Rate, after stability of flow in pipeline, requires according to plate type heat exchanger both sides channel capacity, changes according to first flowmeter flow signal
Become the first control valve opening, change the second control valve opening according to second flowmeter flow signal, to meet in two closed circuits
Operating mode traffic requirement；
After S3, operating condition of test are stable, the plate that four pressure transmitter measurements are obtained is recorded by plc data acquisition controller
Formula exchanger heat side-entrance pressure Phi, plate type heat exchanger hot side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci,
Plate type heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger drooping characteristic is respectively by pressure Phi, pressure Pho, pressure Pci, pressure
Power Pco is calculated；
In step S1, S2, first variable frequency pump and the second frequency conversion pump startup and the Flow-rate adjustment in two closed circuits will
Synchronously carry out.
Second technical scheme：A kind of method of testing using aforementioned plate type heat exchanger liquid phase medium pressure fall-off test system,
The working medium that the passage that plate type heat exchanger is connected with a loop in two closed circuits is flowed in wing passage is in flowing
State, is full of working medium in the passage that plate type heat exchanger is connected with another loop i.e. topping up pressurize wing passage and working medium does not flow
Dynamic, the flowing wing passage of plate type heat exchanger is identical with the working medium hydraulic pressure in topping up pressurize wing passage；
This method of testing is provided with pressure balance module in a test system, and the pressure balance module includes to connect first
Circulation feed liquor test pipeline section and second circulation feed liquor test the pressure-equalizing pipe of pipeline section, and the pressure-equalizing pipe is entered with first circulation
The junction of liquid test pipeline section is arranged between the pressure measuring module on first circulation feed liquor test pipeline section and the first regulating valve,
The pressure-equalizing pipe is arranged on the pressure on second circulation feed liquor test pipeline section with the junction of second circulation feed liquor test pipeline section
Between power measurement module and the second regulating valve；The pressure-equalizing pipe is set on the pipe shaft near first circulation feed liquor test pipeline section
The first balanced valve is equipped with, the pressure-equalizing pipe is provided with the second balance on the pipe shaft near second circulation feed liquor test pipeline section
Valve.
This method of testing comprises the steps：
S1, the cutting-off valve that opens on the closed circuit being connected with flowing wing passage, are made and topping up pressurize wing passage phase
Cutting-off valve on the closed circuit of connection is remained off, the tune on closed circuit that standard-sized sheet is connected with flowing wing passage
Section valve, opens the first balanced valve and the second balanced valve, makes the flowing wing passage in plate type heat exchanger and topping up pressurize wing passage phase
Connection；Start the variable frequency pump on the closed circuit being connected with flowing wing passage, open the air bleeding valve on this closed circuit, the row for the treatment of
After fixed gas to the greatest extent in this closed circuit, the air bleeding valve closed on this closed circuit；
The flow signal of the flowmeter on closed circuit that S2, collection are connected with flowing wing passage, adjusts this and loops back
Frequency conversion pump power on road, after the working medium flow in this closed circuit is stable, will according to plate type heat exchanger one side channel capacity
Ask, change the regulation on this closed circuit according to the flow signal of the flowmeter on the closed circuit being connected with flowing wing passage
Valve opening, to meet the side operating mode traffic requirement；
After S3, operating condition of test are stable, the plate that four pressure transmitter measurements are obtained is recorded by plc data acquisition controller
Formula exchanger heat side-entrance pressure Phi, plate type heat exchanger hot side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci,
Plate type heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger drooping characteristic is respectively by pressure Phi, pressure Pho, pressure Pci, pressure
Power Pco is calculated；
3rd technical scheme：A kind of method of testing using aforementioned plate type heat exchanger liquid phase medium pressure fall-off test system,
The working medium that the passage that plate type heat exchanger is connected with a loop in two closed circuits is flowed in wing passage is in flowing
State, another passage of plate type heat exchanger is that empty liquid normal pressure wing passage is communicated with air；This method of testing comprises the steps：
S1, the cutting-off valve that opens on the closed circuit being connected with flowing wing passage, standard-sized sheet are connected with flowing wing passage
Regulating valve on logical closed circuit；Start the variable frequency pump on the closed circuit being connected with flowing wing passage, open this circulation
Air bleeding valve on loop, after the fixed gas in this closed circuit is drained, the air bleeding valve closed on this closed circuit；
The cutting-off valve that closes on the closed circuit being connected with the empty liquid normal pressure wing passage of plate type heat exchanger (20), and make
The empty liquid normal pressure wing passage of plate type heat exchanger (20) is disconnected with the closed circuit of corresponding connection, makes the sky of plate type heat exchanger (20)
Liquid normal pressure wing passage is connected with air and keeps nothing liquid status；Or, open the circulation being connected with empty liquid normal pressure wing passage
Air bleeding valve on loop, closes other valves that the empty liquid normal pressure wing passage of plate type heat exchanger (20) is connected with tank case (1), makes
The empty liquid normal pressure wing passage of plate type heat exchanger (20) is connected with air by air bleeding valve and keeps nothing liquid status；
The flow signal of the flowmeter on closed circuit that S2, collection are connected with flowing wing passage, adjusts this and loops back
Frequency conversion pump power on road, after the working medium flow in this closed circuit is stable, will according to plate type heat exchanger one side channel capacity
Ask, change the regulation on this closed circuit according to the flow signal of the flowmeter on the closed circuit being connected with flowing wing passage
Valve opening, to meet the side operating mode traffic requirement；
After S3, operating condition of test are stable, the plate that four pressure transmitter measurements are obtained is recorded by plc data acquisition controller
Formula exchanger heat side-entrance pressure Phi, plate type heat exchanger hot side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci,
Plate type heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger drooping characteristic is respectively by pressure Phi, pressure Pho, pressure Pci, pressure
Power Pco is calculated.
The beneficial effects of the present invention is：
1) test system in the present invention is required only for the pressure fall-off test of plate type heat exchanger liquid phase medium and is set up, structure phase
To simple, it is only necessary to tank case at is configured, without additional configuration temperature control system, unnecessary throwing is greatlyd save
Money.
2) test system in the present invention, first circulation feed liquor test pipeline section and second circulation feed liquor are tested the pipe of pipeline section
Crossing footpath and length of pipe correspondent equal, first circulation goes out liquid test pipeline section and second circulation goes out the line portals that liquid tests pipeline section
Also pipeline bore of the closed circuit of correspondent equal, i.e., two in corresponding position is consistent for footpath and length of pipe, pipe in line one
Cause；This test system simultaneously makes the portions such as pressure transmitter in two closed circuits, flowmeter, regulating valve, switch valve and variable frequency pump
Part type selecting is consistent, and the installation site of the corresponding part in two closed circuits is consistent.So as to when operating personnel use this survey
When test system carries out plate type heat exchanger liquid phase medium pressure fall-off test, working medium is from the outflow of same place tank case, tube side and on-way resistance one
Cause, it is ensured that the working medium physical property in two wing passage of plate type heat exchanger is consistent, and avoids hydrostatic head pressure difference to test result
Impact.
3) Flow-rate adjustment module and pressure balance module are provided with the present invention, it is ensured that plate type heat exchanger is warm, cold both sides
The flow of passage, inlet pressure are controlled, and ensure that the realizability of three kinds of testing schemes.In two wing passage work of plate type heat exchanger
In the one wing passage flowing of matter uniform flow testing scheme and plate type heat exchanger, another wing passage topping up equipressure testing scheme, by
In the uniformity of two closed circuit tube sides, and under the control of plc data acquisition controller two variable frequency pump actions same
Step property, working medium simultaneously enters hot, cold two wing passages of plate type heat exchanger, and the inlet pressure of two wing passages is same or like,
So as to reduce significantly because working medium enter the big caused plate deformation of pressure reduction of two wing passage sequencings and two wing passages because
Impact of the element to test result.
From three kinds of different testing schemes that test system matches, plate type heat exchanger liquid phase medium pressure fall-off test result pair is made
Operating mode is actual with more directiveness, and the contrast of the test data of three groups of testing schemes also reflects the property of heat exchange plate from side
Energy.
Description of the drawings
Fig. 1 is the structural representation of liquid-liquid measurement system of the prior art.
Fig. 2 is the structural representation of the plate type heat exchanger liquid phase medium pressure fall-off test system in the present invention.
The implication of in figure label symbol is as follows：
A- liquid storage vessel b- cooling tower c- cooler d- plate type heat exchanger e- heater
1 gravity tank case, 2/3 stop valve, 4 first variable frequency pump, 5 second variable frequency pump
6/7 check-valves, 8 first flowmeter, 9 second flowmeter
10 first 11 second regulating valve of regulating valve, 12 first switch valve
13 second switch valve, 14 first balanced valve, 15 second balanced valve
16 first test pipeline sections 17 second test 20 plate type heat exchanger of pipeline section
23 the 3rd test pipeline sections 24 the 4th test the 3rd switch valve of pipeline section 25
26 the 4th switch valve, 27 first row air valve, 28 second row air valve
18/19/21/22 pressure transmitter
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
As shown in Fig. 2 a kind of plate type heat exchanger liquid phase medium pressure fall-off test system, including tank case 1 and plate type heat exchanger 20,
It is provided with connection first circulation feed liquor test pipeline section 16, first circulation each other to go out between the tank case 1 and plate type heat exchanger 20
Liquid test pipeline section 23 and second circulation feed liquor test pipeline section 17, second circulation go out liquid test pipeline section 24, and the first circulation is entered
Liquid test pipeline section 16, first circulation goes out liquid test pipeline section 23 and constitutes first circulation loop, and the second circulation feed liquor tests pipeline section
17th, second circulation goes out the liquid test composition of pipeline section 24 second circulation loop.
It is pointed out that first circulation loop and second circulation loop can selectively with plate type heat exchanger hot side
Passage or cold side channel are connected, i.e., first circulation loop can be with appointing in the hot-side channel of plate type heat exchanger or cold side channel
One passage of meaning is connected, and second circulation loop is then connected with another passage.
As shown in Fig. 2 being respectively provided with the first circulation feed liquor test pipeline section 16 and second circulation feed liquor test pipeline section 17
There are working medium conveyor module and Flow-rate adjustment module；The working medium conveyor module is for being arranged on first circulation feed liquor test pipeline section 16
The first variable frequency pump 4 and be arranged on second circulation feed liquor test pipeline section 17 on the second variable frequency pump 5.The Flow-rate adjustment module
For the first flowmeter 8 that arranges to 20 order of plate type heat exchanger from tank case 1 being arranged on first circulation feed liquor test pipeline section 16
With the first regulating valve 10, and for be arranged on second circulation feed liquor test pipeline section 17 on suitable to plate type heat exchanger 20 from tank case 1
The second flowmeter 9 and the second regulating valve 11 of sequence arrangement；First variable frequency pump 4 is arranged between tank case 1 and first flowmeter 8
First circulation feed liquor test pipeline section 16 on, second variable frequency pump 5 is arranged between tank case 1 and second flowmeter 9 second
On circulation feed liquor test pipeline section 17.
As shown in Fig. 2 the first circulation feed liquor test pipeline section 16, first circulation goes out liquid test pipeline section 23, second circulation
Feed liquor test pipeline section 17, second circulation goes out liquid test pipeline section 24 and is provided with pressure measxurement mould with the junction of plate type heat exchanger 20
Block；The pressure measuring module is respectively the pressure transmitter 18 according to position as shown in Figure 2 installation, pressure transmitter 19, pressure
Power transmitter 21 and pressure transmitter 22.
This test system is also arranged on the respective at least one test pipeline section in first circulation loop and second circulation loop
There is exhaust module.The exhaust module is to be arranged on the first row air valve 27, Yi Jishe that first circulation goes out on liquid test pipeline section 23
The second row air valve 28 gone out on liquid test pipeline section 24 in second circulation is put, the first row air valve 27 goes out liquid test in first circulation
The installation site correspondence that pipeline section 23 goes out on liquid test pipeline section 24 in second circulation with second row air valve 28 is identical.Certainly, first row
Air valve 27 and second row air valve 28 should be arranged on a high position for corresponding test pipeline section or high point, in order to exclude gas.
The caliber and length of pipe of the first circulation feed liquor test pipeline section 16 and second circulation feed liquor test pipeline section 17
Correspondent equal, first circulation go out caliber and the length of pipe correspondence that liquid test pipeline section 23, second circulation goes out liquid test pipeline section 24
Equal；Working medium conveyor module and Flow-rate adjustment module test pipeline section 16 in first circulation feed liquor and second circulation feed liquor tests pipeline section
Installation site correspondence on 17 is identical, and the model correspondence of corresponding component is identical.First variable frequency pump 4 and the second variable frequency pump 5, first-class
Gauge 8 and second flowmeter 9, the first regulating valve 10 and the second regulating valve 11, pressure transmitter 18 and pressure transmitter 19, pressure
Transmitter 21 and pressure transmitter 22, first row air valve 27 and second row air valve 28 one group and are corresponded to each other two-by-two, each group
Number of element types and the installation site all same in corresponding pipeline are consistent, all parts all with plc data acquisition controller phase
Connection.
As shown in Fig. 2 this test system also includes pressure balance module, the pressure balance module includes that connecting first follows
Ring feed liquor test pipeline section 16 and second circulation feed liquor test the pressure-equalizing pipe of pipeline section 17, the pressure-equalizing pipe and first circulation
The pressure transmitter 18 and first that the junction of feed liquor test pipeline section 16 is arranged on first circulation feed liquor test pipeline section 16 is adjusted
Between valve 10, the pressure-equalizing pipe is arranged on the test of second circulation feed liquor with the junction of second circulation feed liquor test pipeline section 17
Between pressure transmitter 19 on pipeline section 17 and the second regulating valve 11；The pressure-equalizing pipe is near the test of first circulation feed liquor
The first balanced valve 14 is provided with the pipe shaft of pipeline section 16, and the pressure-equalizing pipe is near second circulation feed liquor test pipeline section 17
The second balanced valve 15 is provided with pipe shaft.
Three kinds of testing schemes to test system in the present invention are described in detail below in conjunction with the accompanying drawings.
Embodiment 1
In this testing scheme, plate type heat exchanger 20 be respectively connected with logical two with first circulation loop and second circulation loop
Working medium in individual passage (i.e. hot-side channel in plate type heat exchanger and cold side channel) is flowed for uniform flow, and this method of testing includes
Following steps：
S1, is first turned on stop valve 2, stop valve 3, opens first switch valve 12, second switch valve 13, the 3rd switch valve
25th, the 4th switch valve 26, the first variable frequency pump of low-frequency start 4, the second variable frequency pump 5, standard-sized sheet the first regulating valve 10, the second regulating valve
11, first row air valve 27, second row air valve 28 is then turned on, wait draining in pipe-line system after fixed gas, closes first row air valve
27th, second row air valve 28；Now the first balanced valve 14 and the second balanced valve 15 are all remained off；
The flow signal of S2, collection first flowmeter 8 and second flowmeter 9, adjusts the first variable frequency pump 4, the second variable frequency pump 5
Power, after the stability of flow in two circulation lines, requires according to plate type heat exchanger both sides channel capacity, according to first flow
Count 8 flow signals and change 10 aperture of the first regulating valve, change 11 aperture of the second regulating valve according to 9 flow signal of second flowmeter,
To meet the operating mode traffic requirement in two closed circuits；
After S3, operating condition of test are stable, by plc data acquisition controller record pressure transmitter 18, pressure transmitter 19,
Pressure transmitter 21 and pressure transmitter 22 measure plate type heat exchanger hot side import pressure Phi, the plate type heat exchanger heat for obtaining
Side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci, plate type heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger
Drooping characteristic is calculated by pressure Phi, pressure Pho, pressure Pci, pressure Pco respectively, and this calculating process belongs to common knowledge,
Will not be described in detail herein.
It should be noted that：In the step of this testing scheme S1, S2, first variable frequency pump 4 and the second variable frequency pump 5
Flow-rate adjustment in startup and two closed circuits synchronously will be carried out.
Embodiment 2
In this testing scheme, the work that passage that plate type heat exchanger 20 is connected with first circulation loop is flowed in wing passage
Matter is in flow regime, is full of work with second circulation loop in the passage that plate type heat exchanger 20 is connected i.e. topping up pressurize wing passage
Matter and working medium does not flow, the flowing wing passage of plate type heat exchanger 20 are identical with the working medium hydraulic pressure in topping up pressurize wing passage；
This method of testing comprises the steps：
S1, stop valve 2 is opened, open first switch valve 12, the 3rd switch valve 25, the first regulating valve of standard-sized sheet 10, open
One balanced valve 14 and the second balanced valve 15, make the flowing wing passage in plate type heat exchanger 20 be connected with topping up pressurize wing passage；
The first variable frequency pump of low-frequency start 4, then turns on first row air valve 27, wait draining in pipe-line system after fixed gas, closes air bleeding valve
27；In the process, the stop valve 3 on second circulation loop, second switch valve 13, the 4th switch valve 26 is made to remain turned-off shape
State；
The flow signal of the first flowmeter 8 on S2, collection first circulation loop, adjusts 4 power of the first variable frequency pump, treats the
After working medium flow in one closed circuit is stablized, required according to plate type heat exchanger one side channel capacity, according to first flowmeter 8
Flow signal changes 10 aperture of the first regulating valve, to meet the operating mode traffic requirement of flowing wing passage；
After S3, operating condition of test are stable, by plc data acquisition controller record pressure transmitter 18, pressure transmitter 19,
Pressure transmitter 21 and pressure transmitter 22 measure plate type heat exchanger hot side import pressure Phi, the plate type heat exchanger heat for obtaining
Side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci, plate type heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger
Drooping characteristic is calculated by pressure Phi, pressure Pho, pressure Pci, pressure Pco respectively.
Embodiment 3
In this testing scheme, the work that passage that plate type heat exchanger 20 is connected with first circulation loop is flowed in wing passage
Matter is in flow regime, the passage that plate type heat exchanger 20 is connected with second circulation loop i.e. sky liquid normal pressure wing passage and big gas phase
Logical；This method of testing comprises the steps：
S1, the stop valve 2 that opens in first circulation loop, open first switch valve 12, the 3rd switch valve 25, standard-sized sheet first
Regulating valve 10, the first variable frequency pump of low-frequency start 4, first row air valve 27 is then turned on, wait draining in pipe-line system after fixed gas, is closed
Close first row air valve 27；In the process, stop valve 3 on second circulation loop, second switch valve 13, the 4th switch valve 26 are made
Remain off, and so that plate type heat exchanger 20 is mutually disconnected with second circulation loop, now the empty liquid normal pressure of plate type heat exchanger 20
Passage is directly communicated with air；Meanwhile, so that the first balanced valve 14 and the second balanced valve 15 is also remained off.
If it should be noted that the installation site of second row air valve 28 is just in second switch valve 13 and the 4th switch valve
On second circulation loop between 26, then second row air valve 28 can also be opened, make the empty liquid normal pressure of now plate type heat exchanger 20
Passage is directly communicated with air；
S2, the flow signal of collection first flowmeter 8, adjust 4 power of the first variable frequency pump, treat the stream in first circulation loop
After amount is stable, is required according to plate type heat exchanger one side channel capacity, change the first regulating valve according to 8 flow signal of first flowmeter
10 apertures, to meet the operating mode traffic requirement of flowing wing passage.
After S3, operating condition of test are stable, by plc data acquisition controller record pressure transmitter 18, pressure transmitter 19,
Pressure transmitter 21 and pressure transmitter 22 measure plate type heat exchanger hot side import pressure Phi, the plate type heat exchanger heat for obtaining
Side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci, plate type heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger
Drooping characteristic is calculated by pressure Phi, pressure Pho, pressure Pci, pressure Pco respectively.
Claims (10)
1. a kind of plate type heat exchanger liquid phase medium pressure fall-off test system, it is characterised in that：Including tank case (1) and plate type heat exchanger
(20), be provided between described tank case (1) and plate type heat exchanger (20) connection each other first circulation feed liquor test pipeline section (16),
First circulation goes out liquid test pipeline section (23) and second circulation feed liquor test pipeline section (17), second circulation go out liquid test pipeline section
(24), first circulation feed liquor test pipeline section (16), first circulation go out liquid test pipeline section (23) composition first circulation loop, institute
State second circulation feed liquor test pipeline section (17), second circulation and go out liquid test pipeline section (24) composition second circulation loop；
Working medium conveying is provided with first circulation feed liquor test pipeline section (16) and second circulation feed liquor test pipeline section (17)
Module and Flow-rate adjustment module；
First circulation feed liquor test pipeline section (16), first circulation go out liquid test pipeline section (23), second circulation feed liquor testing tube
Section (17), second circulation go out liquid test pipeline section (24) and are provided with pressure measuring module with the junction of plate type heat exchanger (20)；
This test system row of being provided with also on the respective at least one test pipeline section in first circulation loop and second circulation loop
Gas module.
2. plate type heat exchanger liquid phase medium pressure fall-off test system as claimed in claim 1, it is characterised in that：The first circulation
The caliber and length of pipe correspondent equal of feed liquor test pipeline section (16) and second circulation feed liquor test pipeline section (17), first circulation
Go out caliber and length of pipe correspondent equal that liquid test pipeline section (23), second circulation go out liquid test pipeline section (24)；Working medium is conveyed
The peace of module and Flow-rate adjustment module on first circulation feed liquor test pipeline section (16) and second circulation feed liquor test pipeline section (17)
Holding position correspondence is identical, and the model correspondence of corresponding component is identical.
3. plate type heat exchanger liquid phase medium pressure fall-off test system as claimed in claim 1 or 2, it is characterised in that：The working medium
Conveyor module for the first variable frequency pump (4) for being arranged on first circulation feed liquor test pipeline section (16) and is arranged on second circulation and enters
The second variable frequency pump (5) on liquid test pipeline section (17).
4. plate type heat exchanger liquid phase medium pressure fall-off test system as claimed in claim 3, it is characterised in that：The Flow-rate adjustment
Module for be arranged on first circulation feed liquor test pipeline section (16) from tank case (1) to plate type heat exchanger (20) order arrangement the
Flow meters (8) and the first regulating valve (10), and for be arranged on second circulation feed liquor test pipeline section (17) from tank case (1)
Second flowmeter (9) and the second regulating valve (11) to plate type heat exchanger (20) order arrangement；Described first variable frequency pump (4) are arranged
On first circulation feed liquor test pipeline section (16) between tank case (1) and first flowmeter (8), the second variable frequency pump (5) set
Put on second circulation feed liquor test pipeline section (17) between tank case (1) and second flowmeter (9).
5. plate type heat exchanger liquid phase medium pressure fall-off test system as claimed in claim 1, it is characterised in that：The pressure measxurement
Module is pressure transmitter.
6. plate type heat exchanger liquid phase medium pressure fall-off test system as claimed in claim 1, it is characterised in that：The exhaust module
Go out, for being arranged on first circulation, the first row air valve (27) that liquid is tested on pipeline section (23), and be arranged on second circulation and go out liquid test
Second row air valve (28) on pipeline section (24), first row air valve (27) go out liquid test pipeline section (23) and second in first circulation
The installation site that air bleeding valve (28) goes out on liquid test pipeline section (24) in second circulation corresponds to identical.
7. plate type heat exchanger liquid phase medium pressure fall-off test system as claimed in claim 4, it is characterised in that：This test system is also
Including pressure balance module, the pressure balance module includes that connecting first circulation feed liquor test pipeline section (16) and second circulation enters
The pressure-equalizing pipe of liquid test pipeline section (17), the pressure-equalizing pipe are set with the junction of first circulation feed liquor test pipeline section (16)
Put between the pressure measuring module on first circulation feed liquor test pipeline section (16) and the first regulating valve (10), the pressure balance
Pipe is arranged on the pressure on second circulation feed liquor test pipeline section (17) with the junction of second circulation feed liquor test pipeline section (17) and surveys
Between amount module and the second regulating valve (11)；The pressure-equalizing pipe is in the pipe shaft near first circulation feed liquor test pipeline section (16)
On be provided with the first balanced valve (14), the pressure-equalizing pipe is set on the pipe shaft near second circulation feed liquor test pipeline section (17)
It is equipped with the second balanced valve (15).
8. a kind of method of testing of the plate type heat exchanger liquid phase medium pressure fall-off test system using as shown in claim 4, which is special
Levy be plate type heat exchanger (20) be respectively connected with the work in logical two passage with first circulation loop and second circulation loop
Matter is flowed for uniform flow, and this method of testing comprises the steps：
S1, the cutting-off valve being first turned on first circulation loop and second circulation loop, start the first variable frequency pump (4) and second
Variable frequency pump (5), the first regulating valve of standard-sized sheet (10) and the second regulating valve (11), open first row air valve (27), second row air valve
(28), after the fixed gas in pipeline is drained, first row air valve (27), second row air valve (28) are closed；
The flow signal of S2, collection first flowmeter (8) and second flowmeter (9), adjusts the first variable frequency pump (4), the second frequency conversion
Pump (5) power, after stability of flow in pipeline, requires according to plate type heat exchanger both sides channel capacity, according to first flowmeter (8)
Flow signal changes the first regulating valve (10) aperture, changes the second regulating valve (11) according to second flowmeter (9) flow signal and opens
Degree, to meet the operating mode traffic requirement in two closed circuits；
After S3, operating condition of test are stable, record that four pressure transmitter measurements obtain by plc data acquisition controller board-like changes
Hot device hot side import pressure Phi, plate type heat exchanger hot side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci, board-like
Heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger drooping characteristic is respectively by pressure Phi, pressure Pho, pressure Pci, pressure Pco
Calculate；
Flow-rate adjustment in step S1, S2, in the startup of the first variable frequency pump (4) and the second variable frequency pump (5) and two closed circuits
Synchronously to carry out.
9. a kind of method of testing of the plate type heat exchanger liquid phase medium pressure fall-off test system using as shown in claim 4, which is special
Levy the work for being that the passage that plate type heat exchanger (20) is connected with a loop in two closed circuits is flowed in wing passage
Matter is in flow regime, is full of work with another loop in the passage that plate type heat exchanger (20) is connected i.e. topping up pressurize wing passage
Matter and working medium does not flow, the flowing wing passage of plate type heat exchanger (20) are identical with the working medium hydraulic pressure in topping up pressurize wing passage；
This method of testing is provided with pressure balance module in a test system, and the pressure balance module includes to connect first circulation
Feed liquor test pipeline section (16) and the pressure-equalizing pipe of second circulation feed liquor test pipeline section (17), the pressure-equalizing pipe are followed with first
The junction of ring feed liquor test pipeline section (16) is arranged on the pressure measuring module on first circulation feed liquor test pipeline section (16) and the
Between one regulating valve (10), the pressure-equalizing pipe is arranged on second with the junction of second circulation feed liquor test pipeline section (17) and follows
Between pressure measuring module and the second regulating valve (11) on ring feed liquor test pipeline section (17)；The pressure-equalizing pipe is near the
The first balanced valve (14) is provided with the pipe shaft of one circulation feed liquor test pipeline section (16), the pressure-equalizing pipe is being followed near second
The second balanced valve (15) is provided with the pipe shaft of ring feed liquor test pipeline section (17).
This method of testing comprises the steps：
S1, the cutting-off valve that opens on the closed circuit being connected with flowing wing passage, make to be connected with topping up pressurize wing passage
Closed circuit on cutting-off valve remain off, standard-sized sheet and the regulation on the flowing closed circuit that is connected of wing passage
Valve, opens the first balanced valve (14) and the second balanced valve (15), so that the flowing wing passage in plate type heat exchanger (20) is protected with topping up
Pressure wing passage is connected；Start the variable frequency pump on the closed circuit being connected with flowing wing passage, open on this closed circuit
Air bleeding valve, after the fixed gas in this closed circuit is drained, the air bleeding valve closed on this closed circuit；
The flow signal of the flowmeter on closed circuit that S2, collection are connected with flowing wing passage, is adjusted on this closed circuit
Frequency conversion pump power, after the working medium flow in this closed circuit is stable, required according to plate type heat exchanger one side channel capacity, according to
Change the regulating valve on this closed circuit according to the flow signal of the flowmeter on the closed circuit being connected with flowing wing passage to open
Degree, to meet the side operating mode traffic requirement；
After S3, operating condition of test are stable, record that four pressure transmitter measurements obtain by plc data acquisition controller board-like changes
Hot device hot side import pressure Phi, plate type heat exchanger hot side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci, board-like
Heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger drooping characteristic is respectively by pressure Phi, pressure Pho, pressure Pci, pressure Pco
Calculate.
10. a kind of method of testing of the plate type heat exchanger liquid phase medium pressure fall-off test system using as shown in claim 4, which is special
Levy the work for being that the passage that plate type heat exchanger (20) is connected with a loop in two closed circuits is flowed in wing passage
Matter is in flow regime, and another passage of plate type heat exchanger (20) is that empty liquid normal pressure wing passage is communicated with air；This test side
Method comprises the steps：
S1, the cutting-off valve that opens on the closed circuit being connected with flowing wing passage, standard-sized sheet are connected with flowing wing passage
Regulating valve on closed circuit；Start the variable frequency pump on the closed circuit being connected with flowing wing passage, open this closed circuit
On air bleeding valve, after the fixed gas in this closed circuit is drained, the air bleeding valve closed on this closed circuit；
The cutting-off valve that closes on the closed circuit being connected with the empty liquid normal pressure wing passage of plate type heat exchanger (20), and make board-like
The empty liquid normal pressure wing passage of heat exchanger (20) is disconnected with the closed circuit of corresponding connection, makes the empty liquid of plate type heat exchanger (20) normal
Pressure wing passage is connected with air and keeps nothing liquid status；Or, open the closed circuit being connected with empty liquid normal pressure wing passage
On air bleeding valve, close other valves for being connected with tank case (1) of empty liquid normal pressure wing passage of plate type heat exchanger (20), make board-like
The empty liquid normal pressure wing passage of heat exchanger (20) is connected with air by air bleeding valve and keeps nothing liquid status；
The flow signal of the flowmeter on closed circuit that S2, collection are connected with flowing wing passage, is adjusted on this closed circuit
Frequency conversion pump power, after the working medium flow in this closed circuit is stable, required according to plate type heat exchanger one side channel capacity, according to
Change the regulating valve on this closed circuit according to the flow signal of the flowmeter on the closed circuit being connected with flowing wing passage to open
Degree, to meet the side operating mode traffic requirement；
After S3, operating condition of test are stable, record that four pressure transmitter measurements obtain by plc data acquisition controller board-like changes
Hot device hot side import pressure Phi, plate type heat exchanger hot side outlet pressure Pho, plate type heat exchanger cold side import pressure Pci, board-like
Heat exchanger cold side outlet port pressure Pco；Plate type heat exchanger drooping characteristic is respectively by pressure Phi, pressure Pho, pressure Pci, pressure Pco
Calculate.
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| CN107238627A (en) * | 2017-05-31 | 2017-10-10 | 中国科学院上海应用物理研究所 | Conduction oil working medium forced circulation Comprehensive Experiment circuit system |
| CN107238627B (en) * | 2017-05-31 | 2020-03-27 | 中国科学院上海应用物理研究所 | Comprehensive experiment loop system for forced circulation of heat conduction oil working medium |
| CN107702581A (en) * | 2017-10-31 | 2018-02-16 | 中国计量大学 | The observation device of biphase gas and liquid flow in the plate type heat exchanger of adjustable mounting position |
| CN107702581B (en) * | 2017-10-31 | 2019-05-03 | 中国计量大学 | The observation device of biphase gas and liquid flow in the plate heat exchanger of adjustable mounting position |
| CN108982090A (en) * | 2018-08-13 | 2018-12-11 | 江苏大学镇江流体工程装备技术研究院 | A kind of pressure loss test macro and its test method |
| CN110423655A (en) * | 2019-08-09 | 2019-11-08 | 合肥欧力杰工程技术有限公司 | A kind of Wort cooling plate heat exchanger device for preventing leakage and its application method |
| CN110423655B (en) * | 2019-08-09 | 2024-02-27 | 合肥欧力杰智能装备系统有限公司 | Leakage-proof device of wort cooling plate type heat exchanger and use method thereof |
| CN111189735A (en) * | 2020-01-20 | 2020-05-22 | 上海交通大学 | Oil-containing refrigerant/stagnant oil testing device and method for plate heat exchanger and single pipe |
| CN113899569A (en) * | 2021-08-17 | 2022-01-07 | 合肥通用机械研究院有限公司 | Heat exchanger performance and service life testing device and testing method using same |
| CN113899569B (en) * | 2021-08-17 | 2023-10-03 | 合肥通用机械研究院有限公司 | Heat exchanger performance and service life testing device and testing method using same |
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Address after: 230031 No. 888 Changjiang West Road, Shushan District, Hefei, Anhui. Applicant after: Hefei General Machinery Research Institute Co., Ltd. Applicant after: Gansu boiler pressure vessel inspection Inst Address before: 230031 No. 888 Changjiang West Road, Shushan District, Hefei, Anhui. Applicant before: Hefei Universal Machinery Inst. Applicant before: Gansu boiler pressure vessel inspection Inst |
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