KR101529172B1 - The electronic pressure switchgear - Google Patents

The electronic pressure switchgear Download PDF

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Publication number
KR101529172B1
KR101529172B1 KR1020140006161A KR20140006161A KR101529172B1 KR 101529172 B1 KR101529172 B1 KR 101529172B1 KR 1020140006161 A KR1020140006161 A KR 1020140006161A KR 20140006161 A KR20140006161 A KR 20140006161A KR 101529172 B1 KR101529172 B1 KR 101529172B1
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KR
South Korea
Prior art keywords
pressure
piping
electronic
case
relief valve
Prior art date
Application number
KR1020140006161A
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Korean (ko)
Inventor
박평수
박영선
Original Assignee
(주)우송엔지니어링
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Priority to KR1020140006161A priority Critical patent/KR101529172B1/en
Application granted granted Critical
Publication of KR101529172B1 publication Critical patent/KR101529172B1/en

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    • 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
    • F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
    • 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
    • F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
    • 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
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
    • F16L55/04—Devices damping pulsations or vibrations in fluids

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Measuring Fluid Pressure (AREA)

Abstract

The present invention relates to an electronic pressure switchgear. The present invention is compactly formed by connecting an electronic relief valve, an electronic pressure transducer, and a closed-type expansion tank to a pipe device inside a case. Thus, the present invention can precisely control the stop and restart of a pump according to the starting and stop pressures of the pump by measuring the pressure at high precision using the electronic pressure transducer; can arbitrarily control the starting and stop pressures of the pump through a display device; can prevent damage to the pipe and other devices by precisely controlling the operation pressure of the electronic relief valve due to the precise measurement of the electronic pressure transducer; can prevent damage due to water hammering rapidly generated by the closed-type expansion tank by reducing the water hammering; can reduce pressure measurement errors; and can reduce manufacturing and construction costs by displaying the current pressure using the display device without an additional manometer.

Description

The electronic pressure switchgear

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic pressure switching device, and more particularly, to an electronic pressure switching device that includes an electronic relief valve, an electronic pressure transducer, and a closed expansion tank connected to a piping device, The precision of the pump is high and the control of stopping and restarting of the pump according to the starting pressure and the static pressure of the pump is precise. Through the display device, the operating pressure and the static pressure of the pump can be arbitrarily adjusted and precise measurement of the electronic pressure transducer It is possible to precisely control the operating pressure of the electronic relief valve to prevent damage to piping and other devices, to mitigate sudden water hammer caused by the sealed expansion tank, to prevent breakage due to water hammer, , And when displaying the current pressure through the display device On the addition of such a separate pressure gauge equipped with a rule it relates to an electronic pressure opening which is the manufacturing cost and construction cost device.

Generally, it is necessary to control the flow of water, to control the flow of water such as water for water supply or fire extinguishment, or to block the flow of water for inspection and maintenance of underground pipes And a valve opening / closing device is provided for each predetermined portion of the valve opening / closing device.

Conventional pressure actuated relief valve bodies require that the pressure at which the valve is opened and the blowdown and reattachment pressure should be adjusted to a slight difference in the car's tolerance for high safety of personnel or equipment near the high pressure plant operation, Quot; pressure actuated relief valve assembly "which discloses a" pressure actuated relief valve assembly "which precisely processes the contact surface of the valve seat and the valve member disk to minimize valve leakage near the valve opening.

This general relief valve is installed in the fluid line and is installed in the bypass line of the pipe to prevent damage to the piping system when the pressure of the pipeline rises above the set pressure of the fluid line. The pressurized fluid is discharged to the fluid storage tank or the outside Prevent pressure rise in piping.

In order to know the operating pressure of the relief valve installed in the pump which transports fluid such as fire-fighting field, the operating pressure is checked by starting the pump and seeing the pressure gauge installed on the suction side of the pump while discharging the fluid. And the energy, time, manpower, and the like are inefficiently consumed.

To prevent this, a mechanical pressure switching device is used. In the case of the mechanical pressure switching device, it is difficult to set the mechanical pressure, and the measurement accuracy of the pressure is low, so that the failure of the tank and the piping and the restarting of the pump A deviation (pressure error) occurs.

Particularly, in the case of a mechanical pressure switch, there is a disadvantage in that, as the service life is increased, the accuracy is low and the long-term rotation is low, and the tank and piping are damaged when an abnormally high pressure is generated.

In the case of mechanical pressure switchgear, a high-pressure tank must be installed as a buffer for pressure fluctuations. Thereby increasing installation space and installation cost.

In order to solve this problem, an electronic pressure switching device is used. In a general electronic pressure switching device, the pressure transducer and the valve flow are damaged due to the sudden water hammer.

Korean Patent Publication No. 10-0184856 Korean Patent Registration No. 10-1180352

SUMMARY OF THE INVENTION Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art,

Since the electronic relief valve, the electronic pressure transducer and the closed expansion tank are connected to the piping device in the inside of the case and are formed compactly, the precision of the pressure measurement by the electronic pressure transducer is high, Stop and restart are controlled precisely and the operating pressure and the static pressure of the pump can be arbitrarily adjusted through the display device and the precision measurement of the electronic pressure transducer precisely controls the operating pressure of the electronic relief valve, And an electronic pressure switching device for preventing breakage of the pressure switch.

In addition, it is possible to prevent damage due to the water hammer by mitigating the sudden water hammer generated by the sealed expansion tank, thereby reducing the error of the pressure measurement, and since the present pressure is displayed through the display device, The present invention provides an electronic pressure switching device that eliminates the need for additional mounting to reduce manufacturing costs and construction costs.

In order to accomplish the above object, the present invention provides an electronic pressure switching device installed in communication with a piping connected to a pump to measure and adjust a pressure in a piping,

A case having a display unit mounted on its front surface for displaying a numerical value of the measured pressure and setting a pressure intensity stepwise;

A piping device connected to the piping and configured to branch in multiple directions in the case, the piping device transferring the pressure in the piping;

An electronic relief valve attached to one side of a piping device provided in the case, the electronic relief valve being opened and closed in accordance with the intensity of pressure set in the display device to adjust the pressure;

An electronic pressure transducer attached to one side of the piping device provided in the case, the electronic pressure transducer measuring a pressure transferred through the piping device and transmitting a signal to the display device;

And an enclosed expansion tank attached to one side of the piping device provided in the case, the hermetically sealed expansion tank preventing sudden water hammer carried through the piping device.

As described above, according to the present invention, since the electronic relief valve, the electronic pressure transducer, and the closed expansion tank are connected to the piping device compactly in the inside of the case, the electromagnetic pressure- The precision of the pump is high and the control of stopping and restarting of the pump according to the starting pressure and the static pressure of the pump is precise. Through the display device, the operating pressure and the static pressure of the pump can be arbitrarily adjusted and precise measurement of the electronic pressure transducer There is an effect of precisely controlling the operating pressure of the electronic relief valve to prevent damage to piping and other devices.

In addition, it is possible to prevent damage due to the water hammer by mitigating the sudden water hammer generated by the sealed expansion tank, thereby reducing the error of the pressure measurement, and since the present pressure is displayed through the display device, There is an effect that the manufacturing cost and the construction cost are reduced by eliminating the additional mounting.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is an opening view showing an electronic pressure switching apparatus installed in a piping according to an embodiment of the present invention,
2 is a cross-sectional view of an electronic pressure switching device according to an embodiment of the present invention,
3 is a front view showing an electronic pressure switching device according to an embodiment of the present invention.

The present invention has the following features in order to achieve the above object.

The present invention relates to an electronic pressure switching apparatus which is installed in communication with a piping connected to a pump to measure and adjust a pressure in a piping,

A case having a display unit mounted on its front surface for displaying a numerical value of the measured pressure and setting a pressure intensity stepwise;

A piping device connected to the piping and configured to branch in multiple directions in the case, the piping device transferring the pressure in the piping;

An electronic relief valve attached to one side of a piping device provided in the case, the electronic relief valve being opened and closed in accordance with the intensity of pressure set in the display device to adjust the pressure;

An electronic pressure transducer attached to one side of the piping device provided in the case, the electronic pressure transducer measuring a pressure transferred through the piping device and transmitting a signal to the display device;

And an enclosed expansion tank attached to one side of the piping device provided in the case to prevent sudden water hammer carried through the piping device.

The present invention having such characteristics can be more clearly described by the preferred embodiments thereof.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Before describing in detail several embodiments of the present invention with reference to the accompanying drawings, it is to be understood that the present invention is not limited to the details of construction and the arrangement of components shown in the following detailed description or illustrated in the drawings will be. The invention may be embodied and carried out in other embodiments and carried out in various ways. It should also be noted that the device or element orientation (e.g., "front," "back," "up," "down," "top," "bottom, Expressions and predicates used herein for terms such as "left," " right, "" lateral, " and the like are used merely to simplify the description of the present invention, Or that the element has to have a particular orientation. Also, terms such as " first "and" second "are used herein for the purpose of the description and the appended claims, and are not intended to indicate or imply their relative importance or purpose.

Therefore, the embodiments described in this specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention and do not represent all the technical ideas of the present invention. Therefore, It is to be understood that equivalents and modifications are possible.

2 is a cross-sectional view of an electronic pressure switching device according to an embodiment of the present invention. FIG. 3 is a cross-sectional view of the present invention Fig. 3 is a front view showing an electronic pressure switching device according to one embodiment of the present invention.

1 to 3, the electronic pressure switching device 100 of the present invention is attached to a fire extinguishing pipe, a water supply / water supply pipe, etc., and the pipe 1 is connected to the pump 2, The piping device 20, the electronic relief valve 30, and the pressure regulating valve 30 as a device for sensing and measuring the pressure in the piping 1 generated at this time, An electronic pressure transducer 40, and a sealed expansion tank 50.

As shown in FIGS. 2 to 3, the case 10 includes a display unit 11 for setting the pressure of the pressure measured through the electronic pressure transducer 40 and the intensity of the pressure in steps, And the inside thereof is hollow to provide a part of the piping device 20, the electronic relief valve 30, the electronic pressure transducer 40 and the sealed expansion tank 50.

As described above, the piping device 20, the electronic relief valve 30, the electronic pressure transducer 40, and the sealed expansion tank 50 are provided in the case 10 to be compactly formed, (1), and the installation time is doubled.

Here, the pressure of the display device 11 is composed of a high button and a low button, and a bust adjusting button for adjusting the intensity in steps.

1 and 2, the piping device 20 is connected to the piping 1 to fix the case 10, and one side of the piping device 20 is provided in the case 10 , And the end of the piping device (20) is formed to branch in multiple directions to transfer the pressure in the piping (1). At this time, the shape of the piping device 20 in the case 10 is branched in multiple directions so as to be connected to the electromagnetic relief valve 30, the electromagnetic pressure transducer 40, and the closed expansion tank 50.

The piping device 20 is further provided with an on-off valve 21 between the piping device 1 and the piping 1 so as to be connected to the piping 1. The on-off valve 21 connects the piping device 20 The pressure (fluid) to be transferred can be opened or closed and used when the electronic pressure switchgear 100 is not used or when the electronic pressure switchgear 100 is repaired or replaced. At this time, the piping device 20 can be attached to the piping 1 by welding or the like, and can be attached in various ways.

The piping device 20 is installed in the case 10 and passes through the outside of the case 10. The piping device 20 and the case 10 are fixed to each other, Is formed by a member (not shown) such as an elbow or a tee.

One side of the piping device 20, that is, one side of the piping device 20 formed outside the case 10, is provided with a separate air vent (not shown) for discharging the air formed inside the fluid to be conveyed therein ) Can be installed.

2, the electromagnetic relief valve 30 is attached to a branched end of the piping device 20 provided in the case 10. The electromagnetic relief valve 30 is opened / closed in accordance with the intensity of the pressure set by the display device 11. [ And discharges the pressure of the fluid transferred through the piping device 20 to the outside. At this time, one end of the electromagnetic relief valve 30 is protruded to the outside of the case 10 so that the pressure is discharged to the outside.

Unlike a general mechanical type relief valve, the electromagnetic relief valve 30 can be controlled electronically and precisely, and the structure of the electromagnetic relief valve 30 is similar to that of a conventional electronic relief valve There is no separate technique. However, it is manufactured in a size provided in the case 10.

2, the electronic pressure transducer 40 is an electronic pressure sensor that measures the pressure of the fluid delivered through the piping device 20 and outputs the measured value to the display device 11 .

Here, the electronic pressure transducer 40 is attached to one branch side of the piping device 20 provided in the case 10 (a portion different from the piping device 20 to which the electronic relief valve 30 is attached) , The structure of the electromagnetic pressure transducer 40 is similar to that of a conventional electronic pressure transducer, and therefore, there is no separate description. However, it is manufactured in a size provided in the case 10.

2, the enclosed expansion tank 50 is connected to one side of the piping device 20 provided in the case 10 (the other side of the piping device 20 to which the electronic pressure transducer 40 is attached) And absorbs a sudden water hammer generated during the pressure transferred through the piping device 20 so that the piping device 20, the electronic relief valve 30, and the electronic relief valve 30 are damaged by the water hammer ≪ / RTI >

The pressure regulating nipple 51 is formed on the outer surface of the case 10 so that the pressure regulating nipple 51 is easily protruded from the outside of the case 10, The pressure in the hermetically sealed expansion tank 50 can be adjusted by rotating the nipple.

At this time, the structure of the closed expansion tank 50 is similar to that of a normal expansion tank, so that the structure of the expansion expansion tank 50 is not limited to that described above.

10: Case 11: Display device
12: switch 20: piping device
21: opening / closing valve 30: electronic relief valve
40: Electronic pressure transducer 50: Closed expansion tank
51: Pressure regulating nipple 100: Electronic pressure switch

Claims (3)

An electronic pressure switching device (100) provided in communication with a piping (1) connected to a pump (2) to measure and adjust the pressure in the piping (1)
A case 10 to which a display device 11 for setting a numerical value of the pressure measured in the front part and a pressure value in a stepwise manner is attached;
A piping device 20 connected to the piping 1 and configured to branch in multiple directions in the case 10 and to transfer the pressure in the piping 1;
An electronic relief valve 30 attached to one side of the piping device 20 provided in the case 10 and being opened and closed according to the pressure intensity set by the display device 11 to adjust the pressure;
An electronic pressure transducer 40 attached to one side of the piping device 20 provided in the case 10 for measuring a pressure transferred through the piping device 20 and transmitting a signal to the display device 11, ;
And an enclosed expansion tank 50 attached to one side of the piping device 20 provided in the case 10 to prevent sudden water hammer carried through the piping device 20,
A piping device (20) provided outside the case (10) further includes an opening / closing valve (21)
Wherein the pressure regulating nipple 51 is formed in the sealed expansion tank 50 and the pressure regulating nipple 51 is formed to protrude from the outside of the case 10. [ Device.
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KR1020140006161A 2014-01-17 2014-01-17 The electronic pressure switchgear KR101529172B1 (en)

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KR1020140006161A KR101529172B1 (en) 2014-01-17 2014-01-17 The electronic pressure switchgear

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KR101529172B1 true KR101529172B1 (en) 2015-06-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101970299B1 (en) 2018-11-06 2019-04-18 대전과학기술대학교 산학협력단 The electronic pressure switchgear

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6240377U (en) * 1985-08-30 1987-03-10
JPH1096406A (en) * 1996-09-20 1998-04-14 Kitz Corp Valve driving device
JP2000220755A (en) * 1999-01-29 2000-08-08 Igeta Kinzoku:Kk Gas pressure reducing valve device
JP2012092868A (en) * 2010-10-25 2012-05-17 Ben:Kk Water hammer preventing device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6240377U (en) * 1985-08-30 1987-03-10
JPH1096406A (en) * 1996-09-20 1998-04-14 Kitz Corp Valve driving device
JP2000220755A (en) * 1999-01-29 2000-08-08 Igeta Kinzoku:Kk Gas pressure reducing valve device
JP2012092868A (en) * 2010-10-25 2012-05-17 Ben:Kk Water hammer preventing device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101970299B1 (en) 2018-11-06 2019-04-18 대전과학기술대학교 산학협력단 The electronic pressure switchgear

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