CN109026648A - A kind of medium volume flow regulator pumped at class products export - Google Patents
A kind of medium volume flow regulator pumped at class products export Download PDFInfo
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- CN109026648A CN109026648A CN201810981003.6A CN201810981003A CN109026648A CN 109026648 A CN109026648 A CN 109026648A CN 201810981003 A CN201810981003 A CN 201810981003A CN 109026648 A CN109026648 A CN 109026648A
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- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000011056 performance test Methods 0.000 abstract description 8
- 238000012360 testing method Methods 0.000 description 9
- 238000005086 pumping Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Flow Control (AREA)
Abstract
The invention discloses the medium volume flow regulators at a kind of pump class products export, and including hollow inlet ductwork (1), the medium entrance of inlet ductwork (1) left end is connected with the media outlet of pump class product；The media outlet of inlet ductwork (1) right end is connected with the medium entrance of main line (7) left end and a plurality of medium entrance for adjusting branch (71) left end respectively；The media outlet of main line (7) right end and a plurality of media outlet for adjusting branch (71) right end are connected after confluence with an export pipeline (2).Medium volume flow regulator at a kind of pump class products export disclosed by the invention, accurately and reliably can be adjusted control to the medium volume flow at pump class products export, to meet user to the performance test demand of pump class product.
Description
Technical field
The present invention relates to experimental technique fields, adjust more particularly to the medium volume flow at a kind of pump class products export
Device.
Background technique
Currently, pump class product is most common fluid machinery, various pipe transporting fluids are widely used in, for increasing the energy of fluid
Amount, overcomes flow resistance, achievees the purpose that along Pipeline transport.The purposes for pumping class product is very extensive, throughout agricultural and industry
Production field.
Pump class product can be subjected to the effect of various environmental factors, such as temperature, vibration, low pressure in actual use.
It is the important component of aero-engine fuel oil and control system, working performance if fuel pump is the typical products for pumping class
The performance requirement for whether meeting aero-engine, can directly influence engine work normally.
Pump class properties of product testing stand be revolving speed in order to which simulation pump class product is subject in actual use, pressure,
Volume flow, medium temperature etc., and according to the performance curve of pump, pass through control pressure or the side of flow according to different performance points
Method, to verify whether corresponding volume flow and pressure meet performance requirement.When the working media for pumping class product is high temperature
(130 DEG C or so), when the volume flow of the medium at control examination pump class products export, general control pressure limit 21 ±
The precision of 1MPa, control are relatively easily realized, still, when medium volume flow is examined in control, if necessary to control medium
Volume flow is at lesser numberical range (such as 12 ± 2L/min, 26 ± 1L/min or 65 ± 3L/min), due to medium
The volume flow that pressure is big and needs to control is smaller and precision is higher, therefore, is not easy to realize.
Pneumatically or electrically throttle valve is generally used for the control of flow at present, usually passes through pneumatically or electrically control valve
Open position realizes uninterrupted control, and the reaction time is longer and be more than valve control range itself in Small Flow Control；It is logical
The mode for crossing solenoid valve parallel multiplex quantity tube can be realized discrete Small Flow Control, but in high temperature and pressure, electromagnetism
Valve self character, so that dielectric leakage amount is larger, control precision is unable to satisfy requirement.
Therefore, there is an urgent need to develop a kind of devices out at present, can be accurately and reliably to Jie at pump class products export
Control is adjusted in matter volume flow, to meet user to the performance test demand of pump class product.
Summary of the invention
In view of this, the object of the present invention is to provide the medium volume flow regulator at a kind of pump class products export,
Can control accurately and reliably be adjusted to the medium volume flow at pump class products export in it, to meet user to pump
The performance test demand of class product, is conducive to popularize, be of great practical significance.
For this purpose, the present invention provides the medium volume flow regulators at a kind of pump class products export, including hollow
The medium entrance of inlet ductwork, the inlet ductwork left end is connected with the media outlet of pump class product；
The media outlet of the inlet ductwork right end respectively with the medium entrance of main line left end and a plurality of adjusting branch
The medium entrance of road left end is connected；
The media outlet of the main line right end and a plurality of media outlet for adjusting branch right end go out after confluence with one
Mouth pipeline is connected.
Wherein, pressure transmitter and temperature sensor are provided in the inlet ductwork.
Wherein, the main line includes pneumatic control valve and first flowmeter, the import of the pneumatic control valve left end with
The right end outlet of the inlet ductwork is connected；
The media outlet of the pneumatic control valve right end is connected with the medium entrance of first flowmeter left end；
The media outlet of the first flowmeter right end is connected with export pipeline.
Wherein, every adjusting branch includes the first motor switch ball valve, needle-like switch valve and second flowmeter, in which:
The medium entrance of the first motor switch ball valve left end is connected with the outlet of the right end of the inlet ductwork；
The media outlet of the first motor switch ball valve right end is connected with the medium entrance of needle-like switch valve left end；
The media outlet of the needle-like switch valve right end is connected with the medium entrance of the second flowmeter left end；
The media outlet of the second flowmeter right end is connected with export pipeline.
Wherein, the media outlet of the inlet ductwork right end is also connected with the medium entrance of a leakage branch left end.
Wherein, the leakage branch includes the second motor switch ball valve, nozzle and measuring cup, in which:
The medium entrance of the second motor switch ball valve left end is connected with the outlet of the right end of the inlet ductwork；
The media outlet of the second motor switch ball valve right end is connected to the medium entrance of nozzle left end；
The media outlet of the nozzle right end is located at the surface of an open-topped measuring cup.
By the above technical solution provided by the invention as it can be seen that compared with prior art, the present invention provides a kind of pump classes
Medium volume flow regulator at products export, can reliably to pump class products export at medium volume flow into
Row adjusts control, to meet user to the performance test demand of pump class product, is conducive to popularize, has great production
Practice significance.
In addition, having continuous for the medium volume flow regulator at pump class products export provided by the invention
Tunable characteristic can be realized the flow control of multiclass pump product, realize the medium volume flow in the exit of pump class product from most
Big flow is to continuously adjusting between zero delivery.
Detailed description of the invention
Fig. 1 is the structural representation of the medium volume flow regulator at a kind of pump class products export provided by the invention
Figure；
In figure, 1 is inlet ductwork；2 be export pipeline；3 be pressure transmitter；4 be temperature sensor；5 are adjusted to be pneumatic
Valve；
61 be first flowmeter, and 62 be second flowmeter；7 be main line；70 be leakage branch；71 be adjusting branch；
81 be the first motor switch ball valve, 82 be the second motor switch ball valve；9 be needle-like switch valve；10 be nozzle；11 are
Measuring cup.
Specific embodiment
In order to enable those skilled in the art to better understand the solution of the present invention, with reference to the accompanying drawing with embodiment to this
Invention is described in further detail.
Referring to Fig. 1, the present invention provides the medium volume flow regulator at a kind of pump class products export, including it is hollow
Inlet ductwork 1, the medium entrance of 1 left end of inlet ductwork is connected with the media outlet of pump class product (such as fuel pump)
(passing through hollow pipeline)；
The media outlet of 1 right end of inlet ductwork respectively with the medium entrance of 7 left end of main line and a plurality of adjusting
The medium entrance of 71 left end of branch is connected；
The media outlet of 7 right end of main line and a plurality of adjust branch 71 (being not limited to three shown in FIG. 1) right end
Media outlet is connected after confluence with an export pipeline 2.
In the present invention, in specific implementation, it is provided with pressure transmitter 3 and temperature sensor 4 in the inlet ductwork 1,
Wherein, pressure transmitter 3 is used to control or monitor the pressure at the media outlet of pump class product, and temperature sensor 4 is used to monitor
Pump the medium temperature at products export.
It should be noted that the maximum volume flow of inlet ductwork 1 depends on the medium volume in the exit of pump class product
Uninterrupted.Volume flow is the fluid volume in the unit time by flow section.
In the present invention, in specific implementation, for the main line 7, specific structure are as follows:
The main line 7 include pneumatic control valve 5 and first flowmeter 61, the import of 5 left end of pneumatic control valve with
The right end outlet of the inlet ductwork 1 is connected；
The media outlet of 5 right end of pneumatic control valve is connected with the medium entrance of 61 left end of first flowmeter；
The media outlet of 61 right end of first flowmeter is connected with export pipeline 2.
It should be noted that the medium volume flow of inlet ductwork 2, can adjust valve opening by pneumatic control valve 5
Or valve position, big flow is continuously adjusted to realize, general adjustable minimum volume flow is 100L/min.
In the present invention, in specific implementation, for adjusting branch 71, specific structure are as follows:
Every adjusting branch 71 includes the first motor switch ball valve 81, needle-like switch valve 9 and second flowmeter 62, in which:
The medium entrance of first motor switch ball valve, 81 left end is connected with the outlet of the right end of the inlet ductwork 1；
The media outlet of first motor switch ball valve, 81 right end is connected with the medium entrance of 9 left end of needle-like switch valve
It is logical；
The media outlet of 9 right end of needle-like switch valve is connected with the medium entrance of 62 left end of second flowmeter；
The media outlet of 62 right end of second flowmeter is connected with export pipeline 2.
It should be noted that adjusting the maximum volume flow of branch 71, the caliber and pressure depending on adjusting branch 71 are big
Small, in the present invention, the small flow (i.e. the lesser medium volume flow of numerical value) under high temperature and pressure can be realized by adjusting branch 71
Continuously adjustable (3L/min~100L/min).
In the present invention, in specific implementation, the media outlet of 1 right end of inlet ductwork is also left with a leakage branch 70
The medium entrance at end is connected；
The leakage branch 70 includes the second motor switch ball valve 82, nozzle 10 and measuring cup 11, in which:
The medium entrance of second motor switch ball valve, 82 left end is connected with the outlet of the right end of the inlet ductwork 1；
The media outlet of second motor switch ball valve, 82 right end is connected to the medium entrance of 10 left end of nozzle；
The media outlet of 10 right end of nozzle is located at the surface of an open-topped measuring cup 11.
It should be noted that leakage branch 70, for measuring dielectric leakage amount (0~3L/min at pump class products export
Flow control), when measurement, branch 71 will be adjusted and main line 7 disconnects.
It it should also be noted that, the nozzle 10 can be existing conventional nozzle, such as can be micro- mist of stainless steel
Nozzle.The size of nozzle 10, the pressure size at media outlet for adjusting pump class product, measuring cup 11 are used to collect leakage
Medium simultaneously carries out flow measurement.First flowmeter 61 and second flowmeter 62 can be existing conventional volume flowmeter.
In the present invention, the on-off of the first motor switch ball valve 81, for controlling the corresponding switch for adjusting branch 71；The
Two motor switch ball valves 82, for controlling the on-off of corresponding leakage branch 70；The spool that needle-like switch valve 9 can have by it
Aperture, to realize the continuously adjustable of the corresponding volume flow for adjusting branch 71；First flowmeter 61, for measuring main line 7
Medium volume flow；Second flowmeter 62, for measuring the medium volume flow for adjusting branch 71 at place；
For the present invention, branch 71 is adjusted according to the size of required control flow, the different branch caliber of corresponding selection is adjusted
The quantity for saving the quantity of branch can carry out any setting according to the needs of users, the generally equivalent to required pump class product adjusted
The quantity of small flow performance point.
It should be noted that for pumping class product, it is sometimes necessary to measure the flow leakage rate size of oil leakaging port.Leakage rate
Generally between 0L/min~3L/min, test needs to be measured with measuring cup.In certain pump class products, the flow of outlet
According to use state difference, generally between 3L/min~25L/min, user can according to the actual needs, in flow rate zone
It is interior, the performance test point (generally 3~5) of multiple rates of discharge is selected, thus, by the adjusting of flow regulator, make
The rate of discharge that can control and adjust pump class product is obtained, the requirement of these performance test points is reached.
In the present invention, it is adjusted mainly for the small flow in the volumetric flow rates of 0L/min~30L/min, when
So, according to the needs of users, can also be adjusted for other volume flows, for example, can also for 30L/min~
Small flow in the volumetric flow rates of 100L/min carries out flow control and adjusting.
For the present invention, it should be noted that between the adjacent interconnected component of any two, especially by hollow
Pipeline be connected.
For the present invention, belongs in pump class properties of product testing stand, pump the medium volume flow tune at class products export
Regulating device is the mating portions of testing stand, and the use of flow regulator of the invention is, it can be achieved that different type pumps product to not
It with the requirement of flow, realizes at high temperature under high pressure, the lesser medium volume flow of high-precision numerical value is continuously adjusted, be applicable in
Wider range avoids replacing main line electric control valve because pumping product requirement difference or is equipped with the performance platform of polytypic, significantly
Shorten the test period, reduces experimentation cost.
Based on above technical scheme it is found that for that aspect, can satisfy pump class product testing stand carry out performance or
The demand of flow control when durable debugging, uninterrupted and precision controlling meet the requirement of test, and its have it is continuous can
Characteristic is adjusted, can be realized the flow control of multiclass pump product, realizes pump products export maximum stream flow to the continuously adjustable of zero delivery.
Specific embodiment is addressed below to be illustrated in technical solution for a better understanding of the present invention.
Embodiment.
Class product is pumped for certain, the medium used is aviation kerosine, and medium temperature range is 130 DEG C~140 DEG C, should
The pressure medium for pumping the exit of class product is up to 31MPa, and the performance test point of the volume flow in exit is followed successively by 12 ±
2L/min, 26 ± 1L/min, 65 ± 3L/min, 138L ± 3L/min, 170L ± 3L/min, wherein in caliberMaster
On pipeline, pneumatic control valve can be realized 138L ± 3L/min, the adjusting of 170L ± 3L/min, 42L/min when minimum adjustable,
It, cannot because just within the scope of the limitation of Pneumatic diaphragm valve, being easy to appear the situation of control precision shakiness but in 65L/min
It meets the requirements, therefore 12 ± 2L/min, 26 ± 1L/min, 65 ± 3L/min is required to using the cooperation by adjusting branch, real
The high-precision control of existing small flow (i.e. the lesser medium volume flow of numerical value).
As described in Figure 1, at this point, adjust branch 71 quantity can be three, including be arranged successively from top to bottom first
The adjusting branch 71 for adjusting branch 72 and Article 3 for adjusting branch 71, Article 2 of item.
Use caliber, first adjusting branch 71 be parallel to main line 7, which is in series with first
Motor switch ball valve 81, needle-like switch valve 9 and second flowmeter 62.When need to carry out small flow be 12L/min flow control
When, the pneumatic control valve 5 on main line 7 is closed, supervisor's paths are closed；Open the first electricity of first adjusting branch 71
Dynamic switching ball 81, manually adjusts 9 size of needle-like switch valve, when the reading of the second flowmeter 62 on the adjusting branch 71 is shown
When for 12L/min, the requirement of control flow can be met.The maximum stream flow for adjusting branch 71, can be comprehensive by caliber and pressure
It closes and considers；
Use caliber, the adjusting branch 2 71 of Article 2 be parallel to main line, the adjusting branch 71 series connection
There are the first motor switch ball valve 81, needle-like switch valve 9 and second flowmeter 62.When need to carry out small flow be 26L/min stream
When amount control, the pneumatic control valve 5 on main line 7 is closed, the first motor switch ball valve 81 on first adjusting branch 71 is opened
It opens and in the case that 9 flow of needle-like switch valve has been fixed in 12L/min, at this point, opening the first of the adjusting branch 71 of Article 2
Motor switch ball valve 81 manually adjusts the needle-like switch valve 9 of the Article 2 adjusted on branch 71, observes the adjusting of the Article 2
The reading of second flowmeter 62 on branch 71, until the control flow of display 14L/min, at this time, it can be achieved that pump class product
Exit rate-of flow 26L/min control；
Use caliber, the adjusting branch 71 of Article 3 be parallel to main line 7, which is in series with
First motor switch ball valve 81, needle-like switch valve 9 and second flowmeter 62.When need to carry out small flow be 65L/min flow
When control, the pneumatic control valve 5 on main line 7 is closed, first adjusting branch 71 is stablized in 12L/min, the adjusting of Article 2
Branch 71 is stablized in the case where 14L/min, opens the first motor switch ball valve 81 of the adjusting branch 71 of Article 3, adjusts manually
The needle-like switch valve 9 that Article 3 adjusts branch 71 is saved, observation Article 3 adjusts the second flowmeter 62 on branch 71, until flow
The reading of meter meets the control flow of 39L/min, can realize the control of the exit rate-of flow 65L/min to pump class product at this time
System；
When needing 138L ± 3L/min, when the flow control of 170L ± 3L/min, close first article adjusting branch 71, the
Two the first motor switch ball valves 81 and the second driven opening adjusted on branch, Article 3 adjusting branch 71 and leakage branch 70
Close ball valve 82, open the pneumatic control valve 5 on main line 7, by the monitoring of first flowmeter 61 can be achieved 138L/min,
The automatic control of 170L/min flow；
When needing to adjust 3L/min flow regulation and control below, need to close main line 5, first adjusting branch
Road 71, Article 2 adjusting branch and Article 3 adjusting branch 71, open leakage branch 70 on the second motor switch ball valve
82, using the nozzle 10 of suitable size, by measuring cup 11 come measuring flow size, until suitable nozzle 10 is selected, thus full
The traffic requirement adjusted enough；
In the present invention, in specific implementation, it is public that U.S.'s Parker may be selected in the needle-like switch valve 9 used on adjusting branch 71
The needle-valve of production is taken charge of, this has forced locking device with needle-like switch valve 9, can meet the accurate control to flow；
In the present invention, in specific implementation, the first motor switch ball valve 81 and leakage branch on branch 71 are being adjusted
On 70 and the second motor switch ball valve 82 may be selected the high-voltage electric ball valve of Germany's Günther Heidemann brand, not select electromagnetism generally
Valve avoids itself leakage at high temperature under high pressure from causing the not high problem of flow control accuracy, and electrical ball valve can realize flow substantially
Zero leakage；
In the present invention, in specific implementation, the stream of Germany's Rexroth production is can be selected in pneumatic control valve 5 on main line 7
Control valve selects the control valve of appropriate flow according to pipe diameter size, realizes the continuous control to larger flow；
It should be noted that can still there is flow leakage pneumatic control valve accurate again, electric switching valve
Problem should fully consider that other do not open branch and the valve of main line is let out when using branch progress small flow adjusting is adjusted
Leakage quantity, such as in above-mentioned concrete case, if main line, the first adjusting branch and Article 3 for adjusting branch 71, Article 2
Adjusting branch 71 on valve leakage rate be 1L/min, then adjust 12L/min small flow when, it is only necessary to by first adjust
The needle-valve of section branch road is adjusted to 9L/min, because the Article 2 of closing adjusts branch, Article 3 adjusts branch and master
On pipeline, because the flow of 3L/min has been provided in the presence of leakage.
In the present invention, it should be noted that motor switch ball valve cooperate needle-like switch valve use, it can be achieved that control
Quick response and automatic control, simultaneously as the continuously adjustable characteristic of needle switch valve, also achieving entire regulating device is realized
The automatic continuous control of small flow provides the continuous flow control that testing stand meets polymorphic type pump class product and effectively solves way
Diameter.
Compared with prior art, the present invention has advantageous effects below:
1, the present invention realizes medium in high temperature and pressure, and lesser the continuous of medium volume flow of logarithm can
It adjusts, pump discharge maximum output flow can be achieved to the continuously adjustable of zero delivery by being arranged；
2, the present invention using motor switch ball valve without the use of solenoid valve, avoid solenoid valve under high temperature and high pressure environment itself
The not high problem of flow accuracy caused by leakage, the use of motor switch ball valve have the advantages that fast response time control precision is high；
3, the Pneumatic diaphragm valve or electric control valve on the main line of present invention cooperation external pump class properties of product testing stand
It uses, precision can not be adjusted or control by effectively making up Pneumatic diaphragm valve or the lesser medium volume flow of electric control valve logarithm
Not high blank；
4, the present invention in needle-like switch valve use, manually implemented medium volume flow can be continuously adjusted, realization it is whole
Cover the automatic cycle electric control system of pilot system；The mutual cooperation of needle-like switch valve and switching ball is, it can be achieved that polymorphic type pumps class product
In the automatic control of different small flows (i.e. the lesser medium volume flow of numerical value).
In conclusion compared with prior art, a kind of medium volume stream pumped at class products export provided by the invention
Control accurately and reliably can be adjusted to the medium volume flow at pump class products export, thus full in quantity regulating device
Sufficient user is conducive to popularize, be of great practical significance to the performance test demand of pump class product.
In addition, having continuous for the medium volume flow regulator at pump class products export provided by the invention
Tunable characteristic can be realized the flow control of multiclass pump product, realize the medium volume flow in the exit of pump class product from most
Big flow is to continuously adjusting between zero delivery.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (6)
1. the medium volume flow regulator at a kind of pump class products export, which is characterized in that including hollow inlet ductwork
(1), the medium entrance of inlet ductwork (1) left end is connected with the media outlet of pump class product；
The media outlet of inlet ductwork (1) right end respectively with the medium entrance of main line (7) left end and a plurality of adjusting
The medium entrance of branch (71) left end is connected；
The media outlet of main line (7) right end and it is a plurality of adjust branch (71) right end media outlet after confluence with one
Export pipeline (2) is connected.
2. medium volume flow regulator as described in claim 1, which is characterized in that be arranged on the inlet ductwork (1)
There are pressure transmitter (3) and temperature sensor (4).
3. medium volume flow regulator as described in claim 1, which is characterized in that the main line (7) includes pneumatic
Regulating valve (5) and first flowmeter (61), the import of pneumatic control valve (5) left end and the right end of the inlet ductwork (1)
Outlet is connected；
The media outlet of pneumatic control valve (5) right end is connected with the medium entrance of first flowmeter (61) left end；
The media outlet of first flowmeter (61) right end is connected with export pipeline (2).
4. medium volume flow regulator as described in claim 1, which is characterized in that every adjusting branch (71) includes the
One motor switch ball valve (81), needle-like switch valve (9) and second flowmeter (62), in which:
The medium entrance of first motor switch ball valve (81) left end is connected with the outlet of the right end of the inlet ductwork (1)；
The media outlet of first motor switch ball valve (81) right end is connected with the medium entrance of needle-like switch valve (9) left end
It is logical；
The media outlet of needle-like switch valve (9) right end is connected with the medium entrance of the second flowmeter (62) left end；
The media outlet of second flowmeter (62) right end is connected with export pipeline (2).
5. medium volume flow regulator according to any one of claims 1 to 4, which is characterized in that the inlet tube
The media outlet of road (1) right end is also connected with the medium entrance of leakage branch (70) left end.
6. medium volume flow regulator as claimed in claim 5, which is characterized in that the leakage branch (70) includes the
Two motor switch ball valves (82), nozzle (10) and measuring cup (11), in which:
The medium entrance of second motor switch ball valve (82) left end is connected with the outlet of the right end of the inlet ductwork (1)；
The media outlet of second motor switch ball valve (82) right end is connected to the medium entrance of nozzle (10) left end；
The media outlet of nozzle (10) right end is located at the surface of an open-topped measuring cup (11).
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| CN201810981003.6A CN109026648A (en) | 2018-08-27 | 2018-08-27 | A kind of medium volume flow regulator pumped at class products export |
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| CN201810981003.6A CN109026648A (en) | 2018-08-27 | 2018-08-27 | A kind of medium volume flow regulator pumped at class products export |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110906166A (en) * | 2019-12-03 | 2020-03-24 | 上海航天精密机械研究所 | Combined regulating valve for realizing accurate flow control |
| CN112709291A (en) * | 2020-12-21 | 2021-04-27 | 中国航空工业集团公司北京航空精密机械研究所 | Two-stage flow regulating and pressure stabilizing system and flow regulating method |
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| CN112709291A (en) * | 2020-12-21 | 2021-04-27 | 中国航空工业集团公司北京航空精密机械研究所 | Two-stage flow regulating and pressure stabilizing system and flow regulating method |
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Application publication date: 20181218 |