CN105699062A - Flow resistance test system of valve flow and method for performing little micro flow test by using the same - Google Patents
Flow resistance test system of valve flow and method for performing little micro flow test by using the same Download PDFInfo
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- CN105699062A CN105699062A CN201610096522.5A CN201610096522A CN105699062A CN 105699062 A CN105699062 A CN 105699062A CN 201610096522 A CN201610096522 A CN 201610096522A CN 105699062 A CN105699062 A CN 105699062A
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- G—PHYSICS
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The present invention discloses a flow resistance test system of valve flow and a method for performing a little micro flow test by using the same. The system comprises a water tank, a water pump, a pressurizer, a water collector I, a water separator, a water collector II and a back pressure regulating valve which are connected in order through pipelines. The water collector I is connected with the water separator through a plurality of parallel flow measurement pipelines with different pipe diameters, and flowmeters with different apertures are respectively installed on the flow measurement pipelines; the water separator is connected with the water collector II through a plurality of parallel valve test pipelines with different pipe diameters, and valves with different apertures to be tested are respectively installed on the valve test pipelines; and the water collector II or the pipeline at the downstream of the water collector II is connected with a weighing device which is easy to accurately measure the little micro flow. According to the invention, the flow capability of the flow resistance test system of valve flow may be obtained by measuring the differential pressure through adoption of a Bernoulli equation; the flow resistance coefficient of the flow resistance test system of valve flow may be obtained according to measurement values such as flow velocity, differential pressure and the like; and moreover, the flow capability and the flow resistance coefficient of valves to be tested in various conditions may be accurately measured.
Description
Technical field
The invention belongs to flow measurement technology field, be specifically related to the measuring method of a kind of valve flow flow resistance test system and little micrometeor。
Background technology
Valve is a kind of fluid control elements having a large capacity and a wide range, and is the resistance elements that the quantity in process industry is maximum。The negotiability of valve and flow resistance coefficient are the main performances outside valve intensity and sealing property, the factor that simultaneously must take into during Ye Shi process system design department selection power set (such as pump or compressor etc.)。The size of valve negotiability and flow resistance coefficient obtains mainly through assay device measurement。Scientific and reasonable contrived experiment device is the premise accurately measuring negotiability and flow resistance coefficient, but under some extreme condition, such as large scale small guide vane, prior art is but without accurately measuring technology when for little micrometeor。
Therefore, those skilled in the art need badly provides a kind of valve flow flow resistance test system that can carry out little micro-flow measurement and the method carrying out little micrometeor test thereof。
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of valve flow flow resistance test system that can carry out little micro-flow measurement and the method carrying out little micrometeor test thereof。This measurement system mainly adopts incompressible water as test(ing) medium, and negotiability according to measuring pressure reduction, can calculate gained according to Bernoulli equation；Flow resistance coefficient calculates according to the measured value such as flow velocity, pressure reduction。This system has modular feature, can accurately measure negotiability and the flow resistance coefficient of tested valve under various condition。
A kind of valve flow flow resistance test system is provided one of for achieving the above object, present invention employs techniques below scheme:
A kind of valve flow flow resistance test system, this system includes flowing through pipeline successively along water tank even, water pump, water collector I along medium, described water collector I is connected in parallel to each other by many and the flow measurement pipeline of different tube diameters is connected with water knockout drum, and described flow measurement pipeline is separately installed with the effusion meter of different bore；Described water knockout drum is then connected in parallel to each other by many and the valves test pipeline of different tube diameters is connected with water collector II, and described valves test pipeline is straight length, and is separately installed with the tested valve of different bore on valves test pipeline；Described water collector II or be in and be connected to the weighing device being easy to the little micrometeor of Accurate Determining on the pipeline in water collector II downstream；The inlet ductwork of described water collector II and/or export pipeline are provided with back pressure regulating valve。
Preferably, described valves test pipeline is provided with three pressure-measuring-points, i.e. respectively the first pressure-measuring-point, the second pressure-measuring-point and the 3rd pressure-measuring-point, described first pressure-measuring-point and the second pressure-measuring-point set up separately in the both sides of tested valve, 3rd pressure-measuring-point is arranged on the side away from tested valve of the second pressure-measuring-point, and the length of pipe L1 between the first pressure-measuring-point and the second pressure-measuring-point is the length of pipe L2 between the second pressure-measuring-point and the 3rd pressure-measuring-point and tested valve length sum。
Preferably, described effusion meter, weighing device, pressure-measuring-point data output end be connected to data acquisition unit, the outfan of data acquisition unit is connected with computer。
Preferably, described water collector I, water knockout drum, water collector II is all correspondingly arranged on the interface for extending pipeline；The water side of described water tank is provided with the interface for extending water pump。
Preferably, the pipeline between described water pump and water collector I is also associated with pressurizing vessel。
Preferably, the exit of described water pump is provided with the bypassing reflux stream pipeline for carrying out partial discharge adjustment。
The method that this system carries out flow flow resistance test is utilized to comprise the steps:
S1, startup water pump, carry out Flow-rate adjustment by the bypassing reflux stream pipeline of exit of pump, and medium enters pressurizing vessel, enters water collector I after pressure stability；
S2, medium select the combination of the one or more effusion meters suitable with treating measurement of discharge, make the pipeline at the one or more effusion meter places suitable with treating measurement of discharge be held open state, and close other flow measurement pipelines after entering flow measurement pipeline；Medium flows through after effusion meter records flow Q-value, enters water knockout drum；
S3, making the valves test pipeline at tested valve place be held open state, close other valves test pipelines, medium flows through tested valve and enters water collector II behind the door；When medium flows through the valves test pipeline at tested valve place, tested valve is carried out the measurement of forefront pressure, rear end pressure and pressure reduction by system by pressure-measuring-point；
S4, by backpressure regulation valve regulation tested valve in front of the door after pressure reduction, under different pressure reduction, measure multi-group data, and calculate repeatedly the meansigma methods of tested valve pressure reduction as tested valve pressure differential deltap p value；Medium back flow is to water tank afterwards, it is achieved the circulation operation of medium；
The data collected are inputted computer and are calculated processing by S5, data acquisition unit, automatically derived negotiability Cv value or Kv value, and the flow resistance coefficient ζ value of tested valve and the flow resistance curve that changes with tested valve opening under different opening。
Described tested valve pressure differential deltap p value such as following formula:
Δ p=Δ p1-Δ p2
Wherein:
Δ p1 is the pressure difference value between the first pressure-measuring-point and the second pressure-measuring-point；
Δ p1 is the pressure difference value between the second pressure-measuring-point and the 3rd pressure-measuring-point。
The two of the purpose of the present invention are to provide a kind of method adopting said valve flow flow resistance test system to carry out little micrometeor test, namely under the extreme case of little micrometeor or big valve small guide vane, specifically include following testing procedure:
S1, startup water pump, carry out Flow-rate adjustment by the bypassing reflux stream pipeline of exit of pump, and medium enters pressurizing vessel, enters water collector I after pressure stability；
After S2, medium enter flow measurement pipeline, select the flow measurement pipeline at the effusion meter place of minimum discharge, make the flow measurement pipeline at the effusion meter place of this minimum discharge be held open state, and close other flow measurement pipelines；Medium flows through after the effusion meter of this minimum discharge records flow Q1 value, enters water knockout drum；
S3, making the valves test pipeline at large bore valves and tested valve place be held open state, close other valves test pipelines, medium flows through tested valve and enters water collector II behind the door；When medium flows through the valves test pipeline at tested valve place, tested valve is carried out the measurement of forefront pressure, rear end pressure and pressure reduction by system by pressure-measuring-point；Flowing through the medium incision weighing device of water collector II, weighing device timing is weighed with the little micrometeor Q2 value of Accurate Determining；
S4, by backpressure regulation valve regulation tested valve in front of the door after pressure reduction, under different pressure reduction, measure multi-group data, and calculate repeatedly the meansigma methods of tested valve pressure reduction as tested valve pressure differential deltap p value；Medium back flow is to water tank afterwards, it is achieved the circulation operation of medium；
The data collected are inputted computer and are calculated processing by S5, data acquisition unit, automatically derived negotiability Cv value or Kv value, and the flow resistance coefficient ζ value of tested valve and the flow resistance curve that changes with tested valve opening under different opening；When computer is calculated processing, the little micrometeor Q2 value that weighing device measurement obtains is as the foundation value calculating valve pressure differential deltap p value, and the flow Q1 value measured by the effusion meter of minimum discharge is as measuring accuracy check value。
Described tested valve pressure differential deltap p value such as following formula:
Δ p=Δ p1-Δ p2
Wherein:
Δ p1 is the pressure difference value between the first pressure-measuring-point and the second pressure-measuring-point；
Δ p1 is the pressure difference value between the second pressure-measuring-point and the 3rd pressure-measuring-point。
The beneficial effects of the present invention is:
1), the present invention adopt incompressible water as test(ing) medium, between water collector I and water knockout drum, arrange many be connected in parallel to each other and the flow measurement pipeline of different tube diameters, each flow measurement pipeline is respectively provided with the effusion meter of different range；The present invention also arranges many between water knockout drum and water collector II and is connected in parallel to each other and the valves test pipeline of different tube diameters, being separately installed with the tested valve of different bore on every valves test pipeline, the present invention also sets gradually three pressure-measuring-points along its length on valves test pipeline。
When needing the negotiability Cv value under the different operating modes of tested valve or Kv value are measured, first the combination of an effusion meter suitable with treating measurement of discharge or multiple effusion meter is selected, the purpose of this way is to improve accuracy and the accuracy of flow measurement as much as possible, and make the pipeline at an effusion meter suitable with treating measurement of discharge or multiple effusion meter place all be held open state, and close other flow measurement pipelines；Medium flows through this effusion meter or after multiple effusion meter records flow Q-value, enter the valves test pipeline (now other valves test pipelines are closed) at tested valve place needing test each through valve again through water knockout drum, medium after return water tank through water collector II；When medium flows through the valves test pipeline at tested valve place, tested valve is carried out the accurate measurement of forefront pressure, rear end pressure and pressure reduction by system by three pressure-measuring-points。
From the above, owing to being provided with water knockout drum between water collector I and water collector II, thus the flow measurement pipeline opened in measurement process of the present invention and valves test pipeline are not necessarily one to one, but carry out selecting according to uninterrupted, such as it is likely to be the corresponding valves test pipeline of a flow measurement pipeline, it is also possible to be the corresponding valves test pipelines of two flow measurement pipelines。Certainly, when the corresponding valves test pipeline of a plurality of flow measurement pipeline, it is necessary to make the effusion meter that corresponding discharge is measured on pipeline be in optimum measurement accuracy rating by regulating the stop valve aperture on every flow measurement pipeline。
Negotiability according to the pressure differential deltap p measured, can calculate gained according to Bernoulli equation；The flow Q-value that flow resistance coefficient records according to flow velocity u (flow velocity u is drawn divided by internal diameter of the pipeline sectional area by flow), pressure differential deltap p and effusion meter calculates by formula；Thus the present invention can accurately measure negotiability Cv value or the Kv value of valve, wherein Cv=Q* (ρ/Δ p)0.5, Cv=1.167Kv, and flow resistance coefficient ζ value, wherein Δ p=ζ u2ρ/2, provide for commercial Application and instruct reliably。
2), the present invention is provided with three pressure-measuring-points of order arrangement on valves test pipeline such that it is able to accurately measures tested valve pressure differential deltap p value, improves accuracy of measurement and the degree of accuracy of native system。
3), the present invention is especially applicable in the accurate measurement carrying out negotiability and flow resistance coefficient under the extreme case of little micrometeor or big valve small guide vane, in that case, the medium flowing through water collector II is cut weighing device, weigh by the medium entered in weighing device is carried out timing, get final product the little micrometeor Q2 value of Accurate Determining, the flow Q1 value measured by effusion meter of minimum discharge is as measuring accuracy check value simultaneously, the data rate u that data acquisition unit will collect, pressure differential deltap p and Q1, the input computer such as Q2 value is calculated processing, automatically derived negotiability Cv value or Kv value, and the flow resistance coefficient of different opening lower valve and the flow resistance curve that changes with valve opening。
4), the present invention on water collector I, water knockout drum, water collector II, be all correspondingly arranged the interface for extending pipeline, set up the test pipeline adapting to different valve and valve opening according to actual needs so that this pilot system application prospect is more extensive。
Accompanying drawing explanation
Fig. 1 is the structure schematic diagram of the present invention。
Fig. 2 is present invention schematic diagram of medium circulation status when carrying out the test of little micrometeor。
In figure, the implication of label symbol is as follows:
1-water tank 2-water pump 21-bypassing reflux stream pipeline 3-pressurizing vessel 4-water collector I
5-flow measurement pipeline 51-effusion meter 6-water knockout drum 7-valves test pipeline
71-tested valve 72-pressure-measuring-point 721-the first pressure-measuring-point
722-the second pressure-measuring-point 723-the 3rd pressure-measuring-point 8-water collector II
9-back pressure regulating valve 10-weighing device
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the present invention is clearly and completely described。Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention。
In the present invention, tested valve 71 in FIG and is not drawn into, and is represented with the empty portion between pressure-measuring-point in Fig. 1 72；Though and literary composition is not made an explanation, but the present invention being provided with and controls switch valve or the stop valve that medium circulates at flow measurement pipeline and valves test pipeline。
A kind of valve flow flow resistance test system
As shown in Figure 1, this system includes by pipeline successively along water tank 1 even, water pump 2, pressurizing vessel 3, water collector I 4, water knockout drum 6, water collector II 8, back pressure regulating valve 9, and the exit of described water pump 2 is provided with the bypassing reflux stream pipeline 21 for carrying out Flow-rate adjustment。Described water collector I 4, water knockout drum 6, water collector II 8 are all correspondingly arranged the interface for extending pipeline。It should be noted that back pressure regulating valve 9 all has setting in the inlet ductwork and export pipeline of water collector II 8。
Described water collector I 4 is connected in parallel to each other by many and the flow measurement pipeline 5 of different tube diameters is connected with water knockout drum 6, and described flow measurement pipeline 5 is separately installed with the effusion meter 51 of different bore；Described water knockout drum 6 is then connected in parallel to each other by many and the valves test pipeline 7 of different tube diameters is connected with water collector II 8, described valves test pipeline 7 is straight length, and is separately installed with the tested valve 71 (as shown in Figure 2) of different bore on valves test pipeline 7；Described water collector II 8 or be on the pipeline in water collector II 8 downstream and be connected to the weighing device 10 being easy to the little micrometeor of Accurate Determining。
The data output end of described effusion meter 5, weighing device the 10, first pressure-measuring-point the 721, second pressure-measuring-point 722 and the 3rd pressure-measuring-point 723 is connected to data acquisition unit, and the data output of data acquisition unit carries out data calculating to computer。
As shown in Figure 2, described valves test pipeline 7 is provided with three pressure-measuring-points 72, i.e. respectively the first pressure-measuring-point 721, second pressure-measuring-point 722 and the 3rd pressure-measuring-point 723, described first pressure-measuring-point 721 and the second pressure-measuring-point 722 set up separately in the both sides of tested valve 71, 3rd pressure-measuring-point 723 is arranged on the side away from tested valve 71 of the second pressure-measuring-point 722, and the length sum that length of pipe L1 is the length of pipe L2 between the second pressure-measuring-point 722 and the 3rd pressure-measuring-point 723 and tested valve 71 that first between pressure-measuring-point 721 and the second pressure-measuring-point 722。
Even set the length of tested valve 71 as L3, then L2=L1-L3。
Described tested valve pressure differential deltap p value such as following formula:
Δ p=Δ p1-Δ p2
Wherein:
Δ p1 is the pressure difference value between the first pressure-measuring-point 721 and the second pressure-measuring-point 722；
Δ p1 is the pressure difference value between the second pressure-measuring-point 722 and the 3rd pressure-measuring-point 723。
When utilizing this system to carry out the test of traditional valve flow flow resistance, specifically include following steps:
S1, startup water pump 2, the bypassing reflux stream pipeline 21 exported by water pump 2 carries out Flow-rate adjustment, and medium enters pressurizing vessel 3, enters water collector I 4 after pressure stability；
S2, medium select the combination of the one or more effusion meters suitable with treating measurement of discharge, make the pipeline at the one or more effusion meter places suitable with treating measurement of discharge be held open state, and close other flow measurement pipelines 5 after entering flow measurement pipeline 5；Medium flows through after effusion meter 51 records flow Q-value, enters water knockout drum 6；
S3, making the valves test pipeline 7 at tested valve 71 place be held open state, close other valves test pipelines 7, medium enters water collector II 8 after flowing through tested valve 71；When medium flows through the valves test pipeline 7 at tested valve 71 place, tested valve 71 is carried out the measurement of forefront pressure, rear end pressure and pressure reduction by pressure-measuring-point 72 by system；
S4, regulate the pressure reduction before and after tested valve 71 by back pressure regulating valve 9, under different pressure reduction, measure multi-group data, and calculate repeatedly the meansigma methods of tested valve pressure reduction as tested valve pressure differential deltap p value；Medium back flow is to water tank 1 afterwards, it is achieved the circulation operation of medium；
The data collected are inputted computer and are calculated process, automatically derived negotiability Cv value or Kv value, wherein Cv=Q* (ρ/Δ p) by S5, data acquisition unit0.5, Cv=1.167Kv, and the flow resistance coefficient ζ value of different opening lower valve (Δ p=ζ u2ρ/2) and the flow resistance curve that changes with valve opening。
A kind of method utilizing above-mentioned valve flow flow resistance test system to carry out little micrometeor test
As shown in Figure 1, 2, under the extreme case of little micrometeor or big valve small guide vane, specifically include following testing procedure:
S1, startup water pump 2, the bypassing reflux stream pipeline 21 exported by water pump 2 carries out Flow-rate adjustment, and medium enters pressurizing vessel 3, enters water collector I 4 after pressure stability；
After S2, medium enter flow measurement pipeline 5, select the flow measurement pipeline 5 at the effusion meter place of minimum discharge, make the flow measurement pipeline 5 at the effusion meter place of this minimum discharge be held open state, and close other flow measurement pipelines 5；Medium flows through after the effusion meter of this minimum discharge records flow Q1 value, enters water knockout drum 6；
S3, making the valves test pipeline 7 at large bore valves and tested valve 71 place be held open state, close other valves test pipelines 7, medium enters water collector II 8 after flowing through tested valve 71；When medium flows through the valves test pipeline 7 at tested valve 71 place, tested valve 71 is carried out the measurement of forefront pressure, rear end pressure and pressure reduction by pressure-measuring-point 72 by system；Flowing through the medium incision weighing device 10 of water collector II 8, weighing device 10 timing is weighed with the little micrometeor Q2 value of Accurate Determining；
Described tested valve pressure differential deltap p value such as following formula:
Δ p=Δ p1-Δ p2
Wherein:
Δ p1 is the pressure difference value between the first pressure-measuring-point 721 and the second pressure-measuring-point 722；
Δ p1 is the pressure difference value between the second pressure-measuring-point 722 and the 3rd pressure-measuring-point 723。
S4, regulate the pressure reduction before and after tested valve 71 by back pressure regulating valve 9, under different pressure reduction, measure multi-group data, and calculate repeatedly the meansigma methods of tested valve pressure reduction as tested valve pressure differential deltap p value；Medium back flow is to water tank 1 afterwards, it is achieved the circulation operation of medium；
The data collected and flow velocity u, pressure differential deltap p and Q1, Q2 value etc. are inputted computer and are calculated process, automatically derived negotiability Cv value or Kv value, wherein Cv=Q* (ρ/Δ p) by S5, data acquisition unit0.5, Cv=1.167Kv, and the flow resistance coefficient ζ value of different opening lower valve (Δ p=ζ u2ρ/2) and the flow resistance curve that changes with valve opening；When computer is calculated processing, weighing device 10 measures the little micrometeor Q2 value obtained as the foundation value calculating valve pressure differential deltap p value, and the flow Q1 value measured by the effusion meter of minimum discharge is as measuring accuracy check value。
The so-called foundation value calculating valve pressure differential deltap p value, namely it is be the most accurately owing to 10 timing of weighing device weigh the flow value obtained, therefore, when valve flow flow resistance is calculated, the little micrometeor Q2 value obtained is measured using weighing device 10 as substituting into value of calculation。
And for measuring accuracy check value, for example, when the flow Q1 value error measured by the effusion meter of the little micrometeor Q2 value that weighing device 10 records and minimum discharge is less than 0.2%, then the measuring accuracy of this effusion meter is 0.2 grade。
Claims (10)
1. a valve flow flow resistance test system, it is characterized in that: this system includes flowing through pipeline successively along water tank (1) even, water pump (2), water collector I (4) along medium, described water collector I (4) is connected in parallel to each other by many and the flow measurement pipeline (5) of different tube diameters is connected with water knockout drum (6), and described flow measurement pipeline is separately installed with the effusion meter (51) of different bore；Described water knockout drum (6) is then connected in parallel to each other by many and the valves test pipeline (7) of different tube diameters is connected with water collector II (8), described valves test pipeline (7) is straight length, and is separately installed with the tested valve (71) of different bore on valves test pipeline (7)；Described water collector II (8) or be on the pipeline in water collector II (8) downstream and be connected to the weighing device (10) being easy to the little micrometeor of Accurate Determining；The inlet ductwork of described water collector II (8) and/or export pipeline are provided with back pressure regulating valve (9)。
2. a kind of valve flow flow resistance test system according to claim 1, it is characterized in that: described valves test pipeline (7) is provided with three pressure-measuring-points (72), i.e. respectively the first pressure-measuring-point (721), second pressure-measuring-point (722) and the 3rd pressure-measuring-point (723), described first pressure-measuring-point (721) and the second pressure-measuring-point (722) set up the both sides in tested valve (71) separately, 3rd pressure-measuring-point (723) is arranged on the side away from tested valve (71) of the second pressure-measuring-point (722), and the length of pipe L1 that first between pressure-measuring-point (721) and the second pressure-measuring-point (722) is the length of pipe L2 between the second pressure-measuring-point (722) and the 3rd pressure-measuring-point (723) and tested valve (71) length sum。
3. a kind of valve flow flow resistance test system according to claim 2, it is characterized in that: described effusion meter (5), weighing device (10), pressure-measuring-point (72) data output end be connected to data acquisition unit, the outfan of data acquisition unit is connected with computer。
4. a kind of valve flow flow resistance test system according to claim 3, it is characterised in that: described water collector I (4), water knockout drum (6), water collector II (8) are all correspondingly arranged on the interface for extending pipeline；The water side of described water tank (1) is provided with the interface for extending water pump。
5. a kind of valve flow flow resistance test system according to claim 3, it is characterised in that: the pipeline between described water pump (2) and water collector I (4) is also associated with pressurizing vessel (3)。
6. a kind of valve flow flow resistance test system according to claim 5, it is characterised in that: the exit of described water pump (2) is provided with the bypassing reflux stream pipeline (21) for carrying out partial discharge adjustment。
7. a kind of valve flow flow resistance test system according to claim 6, it is characterised in that utilize the method that this system carries out flow flow resistance test to comprise the steps:
S1, startup water pump (2), the bypassing reflux stream pipeline (21) exported by water pump (2) carries out Flow-rate adjustment, and medium enters pressurizing vessel (3), enters water collector I (4) after pressure stability；
After S2, medium enter flow measurement pipeline (5), select the combination of the one or more effusion meters suitable with treating measurement of discharge, the pipeline making the one or more effusion meter places suitable with treating measurement of discharge is held open state, and closes other flow measurement pipelines (5)；Medium flows through after effusion meter (51) records flow Q-value, enters water knockout drum (6)；
S3, making the valves test pipeline (7) at tested valve (71) place be held open state, close other valves test pipelines (7), medium flows through tested valve (71) and enters water collector II (8) afterwards；When medium flows through valves test pipeline (7) at tested valve (71) place, tested valve (71) is carried out the measurement of forefront pressure, rear end pressure and pressure reduction by pressure-measuring-point (72) by system；
S4, regulated the pressure reduction before and after tested valve (71) by back pressure regulating valve (9), under different pressure reduction, measure multi-group data, and calculate repeatedly the meansigma methods of tested valve pressure reduction as tested valve pressure differential deltap p value；Medium back flow is to water tank (1) afterwards, it is achieved the circulation operation of medium；
The data collected are inputted computer and are calculated processing by S5, data acquisition unit, automatically derived negotiability Cv value or Kv value, and the flow resistance coefficient ζ value of tested valve and the flow resistance curve that changes with tested valve opening under different opening。
8. a kind of valve flow flow resistance test system according to claim 7, it is characterised in that: tested valve pressure differential deltap p value such as following formula:
Δ p=Δ p1-Δ p2
Wherein:
Δ p1 is the pressure difference value between the first pressure-measuring-point (721) and the second pressure-measuring-point (722)；
Δ p1 is the pressure difference value between the second pressure-measuring-point (722) and the 3rd pressure-measuring-point (723)。
9. one kind utilizes the method that valve flow flow resistance as claimed in claim 6 test system carries out little micrometeor test, it is characterised in that under the extreme case of little micrometeor or big valve small guide vane, specifically includes following testing procedure:
S1, startup water pump (2), the bypassing reflux stream pipeline (21) exported by water pump (2) carries out Flow-rate adjustment, and medium enters pressurizing vessel (3), enters water collector I (4) after pressure stability；
After S2, medium enter flow measurement pipeline (5), select the flow measurement pipeline (5) at the effusion meter place of minimum discharge, the flow measurement pipeline (5) making the effusion meter place of this minimum discharge is held open state, and closes other flow measurement pipelines (5)；Medium flows through after the effusion meter of this minimum discharge records flow Q1 value, enters water knockout drum (6)；
S3, the valves test pipeline (7) at large bore valves and tested valve (71) place is made to be held open state, closing other valves test pipelines (7), medium flows through tested valve (71) and enters water collector II (8) afterwards；When medium flows through valves test pipeline (7) at tested valve (71) place, tested valve (71) is carried out the measurement of forefront pressure, rear end pressure and pressure reduction by pressure-measuring-point (72) by system；Flowing through medium incision weighing device (10) of water collector II (8), weighing device (10) timing is weighed with the little micrometeor Q2 value of Accurate Determining；
S4, regulated the pressure reduction before and after tested valve (71) by back pressure regulating valve (9), under different pressure reduction, measure multi-group data, and calculate repeatedly the meansigma methods of tested valve pressure reduction as tested valve pressure differential deltap p value；Medium back flow is to water tank (1) afterwards, it is achieved the circulation operation of medium；
The data collected are inputted computer and are calculated processing by S5, data acquisition unit, automatically derived negotiability Cv value or Kv value, and the flow resistance coefficient ζ value of tested valve and the flow resistance curve that changes with tested valve opening under different opening；When computer is calculated processing, weighing device (10) measures the little micrometeor Q2 value obtained as the foundation value calculating valve pressure differential deltap p value, and the flow Q1 value measured by the effusion meter of minimum discharge is as measuring accuracy check value。
10. the method that a kind of valve flow flow resistance according to claim 9 test system carries out little micrometeor test, it is characterised in that: tested valve pressure differential deltap p value such as following formula:
Δ p=Δ p1-Δ p2
Wherein:
Δ p1 is the pressure difference value between the first pressure-measuring-point (721) and the second pressure-measuring-point (722)；
Δ p1 is the pressure difference value between the second pressure-measuring-point (722) and the 3rd pressure-measuring-point (723)。
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106525358A (en) * | 2016-12-20 | 2017-03-22 | 北京西门子西伯乐斯电子有限公司 | Valve pressure testing system and method |
| CN106568574A (en) * | 2016-11-11 | 2017-04-19 | 菏泽海诺知识产权服务有限公司 | Hydraulic friction loss automatic testing device for water flow indicator for fire extinguishing system |
| CN108072410A (en) * | 2017-12-26 | 2018-05-25 | 潍柴动力股份有限公司 | Air flow meter detecting system |
| CN108168859A (en) * | 2017-12-05 | 2018-06-15 | 浙江工业大学 | Regulating valve cavitation diagnostic device |
| CN108760255A (en) * | 2018-03-09 | 2018-11-06 | 北京航天动力研究所 | A kind of low-capacity pump valve liquid flow test table apparatus |
| CN109000905A (en) * | 2018-06-04 | 2018-12-14 | 泉州市沪航阀门制造有限公司 | A kind of hydraulic characteristic(s) test device and test method |
| CN110411738A (en) * | 2019-08-20 | 2019-11-05 | 合肥通用机械研究院有限公司 | A kind of modularization valve traffic flow resistance test macro and test method |
| CN111256958A (en) * | 2020-03-11 | 2020-06-09 | 中国电子科技集团公司第四十四研究所 | CCD electron multiplication gain measurement calibration method |
| CN112295947A (en) * | 2020-10-10 | 2021-02-02 | 江苏允强洁净管业有限公司 | Detection system for flow valve machining and detection method thereof |
| CN112432783A (en) * | 2020-10-20 | 2021-03-02 | 无锡恒捷磁感技术有限公司 | Oil return valve flow measuring method |
| CN113654964A (en) * | 2021-07-28 | 2021-11-16 | 中广核研究院有限公司 | Water filter element performance test system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102095598A (en) * | 2011-01-25 | 2011-06-15 | 卓旦春 | Valve comprehensive test system |
| CN201955224U (en) * | 2011-01-25 | 2011-08-31 | 卓旦春 | Valve test system |
| CN201965019U (en) * | 2011-01-25 | 2011-09-07 | 卓旦春 | Valve integrated testing system |
| KR20120076876A (en) * | 2010-12-30 | 2012-07-10 | 한국해양연구원 | Experimental device for safety analysis of by-pass pipeline transport process in co2 marine geological storage |
| CN204718783U (en) * | 2015-06-08 | 2015-10-21 | 宁波埃美柯铜阀门有限公司 | Valve flow measuring system |
-
2016
- 2016-02-22 CN CN201610096522.5A patent/CN105699062B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120076876A (en) * | 2010-12-30 | 2012-07-10 | 한국해양연구원 | Experimental device for safety analysis of by-pass pipeline transport process in co2 marine geological storage |
| CN102095598A (en) * | 2011-01-25 | 2011-06-15 | 卓旦春 | Valve comprehensive test system |
| CN201955224U (en) * | 2011-01-25 | 2011-08-31 | 卓旦春 | Valve test system |
| CN201965019U (en) * | 2011-01-25 | 2011-09-07 | 卓旦春 | Valve integrated testing system |
| CN204718783U (en) * | 2015-06-08 | 2015-10-21 | 宁波埃美柯铜阀门有限公司 | Valve flow measuring system |
Non-Patent Citations (5)
| Title |
|---|
| FELLAND ARTHUR KOUMBADINGA费林: "基于称重法流量测量的伺服阀滑阀叠合量测量系统的研究", 《中国优秀硕士学位论文全文数据库 工程科技II辑》 * |
| 中华人民共和国国家质量监督检验检疫总局: "《阀门流量系数和流阻系数试验方法GB/T3082-2014》", 24 June 2014 * |
| 王剑 等: "阀门流量流阻测试装置", 《阀门》 * |
| 邢晓凯 等: "输气干线管输损耗率指标", 《油气储运》 * |
| 黄向阳 等: "标准表法气体流量标准装置及不确定度分析", 《计量技术》 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106568574A (en) * | 2016-11-11 | 2017-04-19 | 菏泽海诺知识产权服务有限公司 | Hydraulic friction loss automatic testing device for water flow indicator for fire extinguishing system |
| CN106525358A (en) * | 2016-12-20 | 2017-03-22 | 北京西门子西伯乐斯电子有限公司 | Valve pressure testing system and method |
| CN106525358B (en) * | 2016-12-20 | 2020-02-18 | 北京西门子西伯乐斯电子有限公司 | Valve pressure testing system and method |
| CN108168859A (en) * | 2017-12-05 | 2018-06-15 | 浙江工业大学 | Regulating valve cavitation diagnostic device |
| CN108072410A (en) * | 2017-12-26 | 2018-05-25 | 潍柴动力股份有限公司 | Air flow meter detecting system |
| CN108760255B (en) * | 2018-03-09 | 2020-03-24 | 北京航天动力研究所 | Small-flow pump valve liquid flow test bed device |
| CN108760255A (en) * | 2018-03-09 | 2018-11-06 | 北京航天动力研究所 | A kind of low-capacity pump valve liquid flow test table apparatus |
| CN109000905A (en) * | 2018-06-04 | 2018-12-14 | 泉州市沪航阀门制造有限公司 | A kind of hydraulic characteristic(s) test device and test method |
| CN110411738A (en) * | 2019-08-20 | 2019-11-05 | 合肥通用机械研究院有限公司 | A kind of modularization valve traffic flow resistance test macro and test method |
| CN111256958A (en) * | 2020-03-11 | 2020-06-09 | 中国电子科技集团公司第四十四研究所 | CCD electron multiplication gain measurement calibration method |
| CN112295947A (en) * | 2020-10-10 | 2021-02-02 | 江苏允强洁净管业有限公司 | Detection system for flow valve machining and detection method thereof |
| CN112432783A (en) * | 2020-10-20 | 2021-03-02 | 无锡恒捷磁感技术有限公司 | Oil return valve flow measuring method |
| CN113654964A (en) * | 2021-07-28 | 2021-11-16 | 中广核研究院有限公司 | Water filter element performance test system |
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