KR20170000903U - Ball valve with ultrasonic flowmeter - Google Patents

Ball valve with ultrasonic flowmeter Download PDF

Info

Publication number
KR20170000903U
KR20170000903U KR2020150005835U KR20150005835U KR20170000903U KR 20170000903 U KR20170000903 U KR 20170000903U KR 2020150005835 U KR2020150005835 U KR 2020150005835U KR 20150005835 U KR20150005835 U KR 20150005835U KR 20170000903 U KR20170000903 U KR 20170000903U
Authority
KR
South Korea
Prior art keywords
ball
ultrasonic
valve
internal flow
ball valve
Prior art date
Application number
KR2020150005835U
Other languages
Korean (ko)
Inventor
김진혁
Original Assignee
대우조선해양 주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 대우조선해양 주식회사 filed Critical 대우조선해양 주식회사
Priority to KR2020150005835U priority Critical patent/KR20170000903U/en
Publication of KR20170000903U publication Critical patent/KR20170000903U/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K5/00—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary
    • F16K5/06—Plug valves; Taps or cocks comprising only cut-off apparatus having at least one of the sealing faces shaped as a more or less complete surface of a solid of revolution, the opening and closing movement being predominantly rotary with plugs having spherical surfaces; Packings therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K27/00—Construction of housing; Use of materials therefor
    • F16K27/06—Construction of housing; Use of materials therefor of taps or cocks
    • F16K27/067—Construction of housing; Use of materials therefor of taps or cocks with spherical plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/66—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by measuring frequency, phase shift or propagation time of electromagnetic or other waves, e.g. using ultrasonic flowmeters
    • G01F1/662—Constructional details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves

Abstract

The present invention relates to an ultrasonic flow meter integrated ball valve 10 capable of miniaturizing and reducing the manufacturing cost by integrally forming an ultrasonic flowmeter 200 for measuring a flow rate of a fluid passing through a ball valve 10, Includes a valve body 110 having an internal flow passage 16 connecting the inlet 12 and the outlet 14 and a valve body 110 installed in the internal flow passage 16 to open and close the internal flow passage 16, An operating mechanism 140 for opening and closing the internal flow path 16 by rotating the stem 130, and an operating mechanism 140 for opening and closing the internal flow path 16 by rotating the stem 120. [ And an ultrasonic flowmeter (200) for measuring a flow rate of the fluid passing through the internal flow path (16) by the ultrasonic sensor modules (150a, 150b) provided at the inlet side and the outlet side of the ultrasonic wave sensor And a flow meter integrated ball valve (10).

Description

{BALL VALVE WITH ULTRASONIC FLOWMETER}

The present invention relates to an integrated ball valve for an ultrasonic flowmeter capable of reducing the size and manufacturing cost by integrally forming an ultrasonic flowmeter for measuring the flow rate of a fluid (FLUID) passing through a ball valve.

BACKGROUND ART [0002] Generally, a pipe for injecting and extracting high-pressure fuel such as gas and liquid is installed in a pipe of a high-pressure tank storing various high-pressure gas (for example, LPG), and the pipe includes at least one valve for controlling the flow rate, (FLOWMETER) for adjusting or monitoring the supply flow rate of the fluid.

There are various kinds of flowmeters such as an electronic flowmeter, an area flowmeter, a turbine flowmeter, an ultrasonic flowmeter, a differential pressure flowmeter, and a vortex flowmeter. For example, Valves are necessarily installed at the front end, the rear end, or the front and rear ends.

As an example of the prior art in which such a flow meter (or a pressure gauge) and a valve are combined, there is a Korean Registered Utility Model No. 20-0200420.

 Korean Utility Model Registration Utility Model No. 20-0200420 discloses a liquid injection induction tube having a ball valve 5 capable of injecting and withdrawing liquid high pressure fuel from one side of a valve body 4 having a flange 3 A liquid injection pipe 6 connected to the liquid withdrawing pipe 12 connected to the liquid withdrawing pipe 13 and a liquid withdrawing pipe 7 connected to the liquid withdrawing pipe 13 and having a flange 7a, A gas inlet pipe 8 having a ball valve 5 and a gas outlet pipe 9 having a flange 9a are formed so as to communicate with the communication pipe 4a on the valve body 4.

A pressure gauge 10 capable of measuring the pressure in the high pressure tank 2 and a liquid level measurement gauge 11 connected to the liquid level measuring pipe 14 capable of measuring the liquid level are disposed on the communicating pipe 4a, (4).

As another example of the prior art in which a flow meter and a valve are combined, there is an ultrasonic flow meter described in Japanese Patent Application Laid-Open No. 2012-215464.

Japanese Unexamined Patent Application Publication No. 2012-215464 has a shut-off valve 2 and a flow meter side portion 3 which are disposed at a proper position of the fluid passage 1.

The flow meter side portion 3 includes a pair of ultrasonic sensors 31a and 31b that perform ultrasonic wave transmission and reception on the upstream side and the downstream side of the flow path 1 respectively and the pair of ultrasonic sensors 31a and 31b And are arranged such that the traveling direction of the ultrasonic waves transmitted between the ultrasonic sensors 31a and 31b and the direction in which the fluid passes through the flow path cross at a certain angle?

The pair of ultrasonic sensors 31a and 31b are connected to the ultrasonic sensor drive circuit 30. The ultrasonic sensor drive circuit drives ultrasonic waves of the ultrasonic sensors 31a and 31b and transmits ultrasonic waves So as to measure the flow rate of the fluid passing through the flow path.

However, according to the related art as described above, the flowmeter and the valve are separated and formed, and the number of parts for connection between the flowmeter and the valve is increased, which increases the work flow during installation and maintenance.

For example, when a flow meter and a valve are installed in each pipe, the flange for connecting the flow meter and the valve increases, and the use of parts such as an O-ring in the connecting member and the valve is increased, Additional welding work is needed.

Further, since the straight pipe portion for installing the valve and the straight pipe portion for installing the flow meter are separately provided, there is a problem that the structure around the pipe is complicated, thereby reducing the space utilization of the industrial facility.

Korean Registered Utility Model No. 20-0200420 (Registration date: Aug. 08, 2000) Japanese Laid-Open Patent Publication No. 2012-215464 (Published date: November 08, 2012)

It is an object of the present invention to provide a ball valve and an ultrasonic flowmeter integrated with each other and to eliminate an additional straight pipe portion and a flange, thereby minimizing size and manufacturing cost, And an object of the present invention is to provide an integrated ball valve for an ultrasonic flowmeter which can reduce the workload during installation and maintenance.

According to an aspect of the present invention, there is provided a valve apparatus comprising: a valve body having an internal flow path connecting a fluid inlet and a fluid outlet; a ball installed in the internal flow passage to open and close the internal flow passage by rotation; An operating mechanism that rotates the stem to open and close the internal flow path and a flow rate of the fluid passing through the internal flow path by an ultrasonic sensor module provided on the inlet side and the outlet side of the ball, respectively, And an ultrasonic flowmeter for measuring the flow rate of the ultrasonic flowmeter.

The ultrasonic sensor module may be installed in a pair such that the ultrasonic sensor module faces the upper portion of the inlet side of the ball and the lower portion of the outlet side of the ball in a diagonal direction.

The ultrasonic sensor module may be configured to transmit ultrasonic waves to a space opened by the balls.

Wherein the ultrasonic flowmeter includes an analyzer for analyzing a change in ultrasonic waves emitted and detected by the ultrasonic sensor module and measuring a flow rate of the fluid passing through the internal flow channel and a flow rate meter for measuring the flow rate of the fluid measured by the analyzer, And a display unit for displaying an image.

The inner flow path may be configured to have the same diameter as the inlet side and the outlet side of the ball.

The valve body may include a flange for connecting the ends of the inlet and the outlet to the pipe.

The ultrasonic sensor module may be configured such that ultrasonic waves emitted from at least one of the pair of upper and lower ultrasonic sensor modules are transmitted through a fluid passing through the inner channel and then detected by another one.

The ultrasonic sensor module may be installed in a straight pipe portion formed between the ball and the flange.

According to the present invention, by installing the ultrasonic flowmeter integrally on the straight pipe portion of the ball valve, the size of the device can be minimized by omitting the straight pipe portion and the flange for separately joining the ultrasonic flowmeter, And the manufacturing cost can be reduced.

In addition, since the number of flanges for coupling together with the miniaturization of the apparatus is reduced, it is possible to reduce the work flow during installation and maintenance on the piping.

FIG. 1 is a cross-sectional view showing an integrated type ball valve of an ultrasonic flowmeter of the present invention,
FIG. 2 is a conceptual view showing an integrated type ball valve for an ultrasonic flowmeter according to the present invention,
Fig. 3 is a perspective view showing the ball valve integrated with the ultrasonic flowmeter of the present invention.

Hereinafter, the technical structure of the ball valve integrated with an ultrasonic flowmeter according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a cross-sectional view showing an integrated ball valve 10 of the present invention, FIG. 2 is a conceptual view showing an integrated ball valve 10 of the present invention in the present invention, and FIG. 3 is a block diagram of a ball valve integrated with an ultrasonic flowmeter 10).

1 to 3, an integrated ball valve 10 of an ultrasonic flowmeter according to one embodiment of the present invention includes a valve body 10 having an internal flow passage 16 connecting between an inlet port 12 and an outlet port 14, A ball 120 installed in the inner flow path 16 to open and close the inner flow path 16 by rotation and a stem 15 coupled to the inner surface of the inner flow path 16, An operating mechanism 140 for rotating the stem 130 to open and close the internal flow passage 16 and an ultrasonic sensor module 150a provided at an inlet side and an outlet side of the ball 120, And an ultrasonic flowmeter 200 for measuring the flow rate of the fluid passing through the internal flow path 16 by means of the ultrasonic flowmeter 150b.

The inner passage 16 of the valve body 110 is formed at the center between the inlet 12 for introducing the fluid to one side and the outlet 14 for discharging the fluid to the other side, do. At this time, the pair of seat rings (SEAT-RING) 24 are combined with each other, and the ball 120 is operatively positioned on the inner peripheral surface of the combined shape.

The valve body 110 is provided with a flange 18 for connecting the ends of the inlet 12 and the outlet 14 to the pipe.

The integrated ball valve 10 of the ultrasonic flowmeter according to the present embodiment is a full bore type in which the inlet port 12, the discharge port 14 and the internal flow path 16 of the valve body 110 have the same diameter . The ball 120 is formed with a through hole 22 having an inner diameter equal to the diameter of the inner flow passage 16. When the stem 130 is rotated through the operating mechanism 140, So as to open or shut off the flow of the fluid in the internal flow passage 16 along the position where the through hole 22 faces.

The stem 130 coupled to the ball 120 may include a lever that extends outwardly from the valve body 110 to allow manual operation, or a controller (not shown) So that the ball 120 can be smoothly rotated.

Each of the ultrasonic sensor modules 150a and 150b of the ultrasonic flowmeter 200 is provided with a pair of an inlet side and an outlet side of a ball 120 for opening and closing the internal flow passage 16, Permeates the fluid flowing in the inner flow path 16, and is detected by the other pair.

Specifically, the ultrasonic sensor modules 150a and 150b are installed on the upper part of the inlet side of the ball 120 and the lower part of the outlet side of the ball, respectively, so as to face each other in a diagonal direction.

The ultrasonic sensor modules 150a and 150b are not operated when the flow of fluid on the internal flow path 16 is blocked by the ball 120 and the internal flow path 16 is opened by the through hole 22 of the ball 120 Lt; / RTI > At this time, the ultrasonic waves emitted from any one of the pair of the ultrasonic sensor modules 150a and 150b pass through the through hole 22 of the ball 120 and are detected by the other ultrasonic sensor modules 150a and 150b.

The ultrasonic sensor modules 150a and 150b are installed in the straight pipe portion formed between the ball 120 of the valve body 110 and the flanges 18 on both sides.

The ultrasonic flowmeter 200 of the integrated ball valve 10 of the present invention analyzes the change of the ultrasonic waves emitted and detected by the ultrasonic sensor modules 150a and 150b, An analyzing unit 160 for measuring the flow rate of the fluid passing through the analyzing unit 16 and a display unit 170 for displaying the flow rate measured by the analyzing unit 160 as a numerical value and externally displaying the flow rate.

On the other hand, the flow rate of the fluid measured by the analysis unit 160 may be configured to automatically control the opening and closing of the valve according to the flow rate of the fluid, by sending it to a controller that automatically operates the valve. In addition, when the valve is operated manually, the operator can directly recognize the value displayed on the display unit 170 and manually open or close the valve according to the situation.

3, the display unit 170 is mounted on the side surface of the valve body 110. However, the present invention is not limited thereto. For example, when the display unit 170 is easily visible, May be installed.

The ball valve 10 and the ultrasonic flowmeter 200 are formed integrally with each other and the connecting member for separately connecting the ultrasonic flowmeter 200 and the ball valve 10, (For example, a flange) can be removed. Therefore, it is possible to reduce the size of the valve device, to increase the space utilization around the pipe, and to significantly reduce the manufacturing cost of the valve device.

In addition, through the integrated structure of the ball valve 10 and the ultrasonic flowmeter 200, the valve device can be downsized and the additional connecting member can be eliminated, thereby reducing the number of workpieces during installation and maintenance.

By providing the ultrasonic flowmeter 200 on the straight pipe portion of the full-bore type ball valve 10 without forming the straight pipe portion necessary for measuring the flow rate of the fluid through the ultrasonic flowmeter 200, It is possible to minimize the size of the valve device without damaging the function of the valve 10.

Although the ultrasonic flowmeter integrated ball valve 10 according to the present invention has been described with reference to the embodiments shown in the drawings, it is merely an example, and various modifications and equivalent other embodiments can be made by those skilled in the art . Accordingly, the true scope of the technical protection should be determined by the technical idea of the appended claims.

10: Ball valve
12: inlet
14: Outlet
16:
18: Flange
22: Through hole
24: Seat ring
110: valve body
120: view
130: Stem
140:
160: Analysis section
170:
200: Ultrasonic flowmeter

Claims (8)

A valve body (110) having an internal flow passage (16) connecting the inlet (12) and the outlet (14);
A ball 120 installed in the internal flow path 16 to open and close the internal flow path 16 by rotation;
A stem 130 coupled to form a rotational center axis of the ball 120;
An operating mechanism 140 for opening and closing the internal flow path 16 by rotating the stem 130; And
An ultrasonic flowmeter 200 for measuring a flow rate of the fluid passing through the internal flow path 16 by the ultrasonic sensor modules 150a and 150b installed at the inlet side and the outlet side of the ball 120; And an ultrasonic flow meter integrated ball valve comprising the ultrasonic flow meter integrated ball valve. The method according to claim 1,
The ultrasonic sensor module (150a, 150b)
Wherein a pair of the pair of ball valves are disposed to face each other in the diagonal direction on the upper portion of the inlet side of the ball 120 and the lower portion of the outlet side of the ball. The method according to claim 1,
The ultrasonic sensor module (150a, 150b)
And transmits the ultrasonic wave to a space opened by the ball (120). The method according to claim 1,
The ultrasonic flowmeter (200)
An analyzer 160 for analyzing the changes of the ultrasonic waves emitted and detected by the ultrasonic sensor modules 150a and 150b and measuring the flow rate of the fluid passing through the internal flow path 16; And
A display unit 170 for numerically displaying the flow rate of the fluid measured by the analysis unit 160 and displaying the flow rate of the fluid numerically; Further comprising: an ultrasonic flowmeter integral ball valve. The method according to claim 1,
The internal passage (16)
Wherein the inner diameter of the ball 120 is the same as the inner diameter of the straight pipe portion on the inlet side and the outlet side of the ball 120, respectively. The method according to claim 1,
The valve body (110)
And a flange (18) for connecting each end of the inlet (12) and the outlet (14) to a pipe to be installed. 3. The method of claim 2,
The ultrasonic sensor module (150a, 150b)
And ultrasonic waves emitted from at least one of the pair of ultrasonic sensor modules (150a, 150b) are transmitted by the fluid passing through the internal passage (16), and then detected by the other one of the pairs. Integral ball valve with ultrasonic flowmeter. The method according to claim 6,
The ultrasonic sensor module (150a, 150b)
Wherein the ball valve is installed in a straight pipe portion formed between the ball and the flange.
KR2020150005835U 2015-09-01 2015-09-01 Ball valve with ultrasonic flowmeter KR20170000903U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR2020150005835U KR20170000903U (en) 2015-09-01 2015-09-01 Ball valve with ultrasonic flowmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR2020150005835U KR20170000903U (en) 2015-09-01 2015-09-01 Ball valve with ultrasonic flowmeter

Publications (1)

Publication Number Publication Date
KR20170000903U true KR20170000903U (en) 2017-03-09

Family

ID=58412564

Family Applications (1)

Application Number Title Priority Date Filing Date
KR2020150005835U KR20170000903U (en) 2015-09-01 2015-09-01 Ball valve with ultrasonic flowmeter

Country Status (1)

Country Link
KR (1) KR20170000903U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108020288A (en) * 2017-12-31 2018-05-11 天津市金凤科技发展有限公司 Ultrasonic water meter
WO2018200087A1 (en) * 2017-04-25 2018-11-01 Bonomi Vittorio Integrated ball valve and ultrasonic flowmeter
KR101962864B1 (en) * 2017-10-16 2019-03-27 동아대학교 산학협력단 Ball Valve
EP3730907A1 (en) * 2019-04-27 2020-10-28 Hero Labs Sp. z o.o. An assembly for flow measurement and control

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200200420Y1 (en) 2000-05-25 2000-10-16 주식회사원기연 A multi-valve for a high pressure gas tank
JP2012215464A (en) 2011-03-31 2012-11-08 Osaka Gas Co Ltd Ultrasonic flowmeter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200200420Y1 (en) 2000-05-25 2000-10-16 주식회사원기연 A multi-valve for a high pressure gas tank
JP2012215464A (en) 2011-03-31 2012-11-08 Osaka Gas Co Ltd Ultrasonic flowmeter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018200087A1 (en) * 2017-04-25 2018-11-01 Bonomi Vittorio Integrated ball valve and ultrasonic flowmeter
US10295387B2 (en) 2017-04-25 2019-05-21 Vittorio BONOMI Integrated ball valve and ultrasonic flowmeter
CN110582688A (en) * 2017-04-25 2019-12-17 维托里奥·博诺米 Integrated ball valve and ultrasonic flow meter
EP3615895A4 (en) * 2017-04-25 2021-02-17 Bonomi, Vittorio Integrated ball valve and ultrasonic flowmeter
EP4053513A1 (en) * 2017-04-25 2022-09-07 Bonomi, Vittorio Integrated ball valve and ultrasonic flowmeter
KR101962864B1 (en) * 2017-10-16 2019-03-27 동아대학교 산학협력단 Ball Valve
CN108020288A (en) * 2017-12-31 2018-05-11 天津市金凤科技发展有限公司 Ultrasonic water meter
EP3730907A1 (en) * 2019-04-27 2020-10-28 Hero Labs Sp. z o.o. An assembly for flow measurement and control

Similar Documents

Publication Publication Date Title
EP3615895B1 (en) Integrated ball valve and ultrasonic flowmeter
US9016140B2 (en) Valve having rotatable valve ball with calibrated orifice and coaxial upstream/downstream ports and angled taps to measure upstream/downstream pressures for flow measurement
KR20170000903U (en) Ball valve with ultrasonic flowmeter
US8776613B2 (en) Ultrasonic measurement apparatus having a deflection unit forming a loop
US8356627B2 (en) Three-valves manifold for differential pressure type flow meter
CN102333983A (en) Pipeline apparatus and method
US8701497B2 (en) Fluid flow testing system
CN102549326A (en) Speed control drive section with failsafe valve
US10636596B2 (en) Flow sensor module and controller
KR100436972B1 (en) Vapor flow measuring device for standardizing flow meter
JPH1183659A (en) Method for adjusting differential pressure transmitter and three-way valve therefor
US20120247234A1 (en) System and method for sampling a fluid
KR102520395B1 (en) Measuring device for liquid flow
EP2330475B1 (en) Pressure reduction device for a gas cylinder
JP2007162719A (en) Butterfly valve and pressure measuring device for fire extinguishing equipment
WO2018132114A1 (en) Integrated flow control and flow measurement apparatus
CN211178608U (en) Flow detection device and pipeline equipment
KR101274163B1 (en) A diverter valve for measuring gravimetric mass flow rate
JP6818200B2 (en) Abnormal part detection device of control valve system
JP2009264758A (en) Three-way valve for differential pressure flow meter
JP2007275844A (en) Mixing device
AU2018101520A4 (en) Water meter
JP2016055256A (en) Liquid separation device
KR20210154042A (en) Flowmeter for controlling the opening and closing of valve remotely
JP2020085681A (en) Water meter

Legal Events

Date Code Title Description
WITN Withdrawal due to no request for examination