KR101163728B1 - Testing device of gas pressure for portable - Google Patents

Abstract

PURPOSE: A portable gas pressure inspecting device is provided to rapidly and accurately confirm whether or not gas is leaked from facilities, pipes, a storing tank, and gas appliances and to improve the customer satisfaction. CONSTITUTION: A portable gas pressure inspecting device comprises a body(10). The body comprises a pressure measuring fixture(11) where a first horse is connected, a pneumatic outlet(12) where a second horse is connected, an operation unit(13), and a display unit. The first and second horses are connected to a third horse through a branched pipe and the third horse is connected to a connecting pipe of a measurement object. The body comprises a pressure sensor, a pressing pump, a flow rate control valve, a control unit, and a power unit. The pressure sensor is connected to the pressure measuring fixture, thereby measuring pressure inside the measurement object connected through the first, the second, and the third horses. The pressing pump supplies air compressed at a constant pressure to the measurement object. The flow rate control valve increases or decreases the pressure inside the measurement object by controlling a supplying amount of the air compressed by the pressing pump.

Description

Testing device of gas pressure for Portable

The present invention relates to a gas pressure inspection apparatus, and more particularly, to increase or decrease the pressure in a pipe used for supplying city gas to maintain a set reference pressure or to maintain a pressure in a pipe at a set reference pressure. The present invention relates to a portable gas pressure inspection device capable of quickly and directly checking on-site whether decompression operation is normally performed.

In general, city gas is supplied to and utilized at homes and facilities and facilities in cities through pipes, and the city gas must be supplied to consumers at a constant pressure.

In other words, the city gas supplied at high pressure, medium pressure, or low pressure must be able to be used at a constant pressure at all times in the end use so that it can be used more safely and efficiently.

Most gas tanks to consumers are transported by pipes such as cast iron or steel, which can be divided into low pressure supply, medium pressure supply, and high pressure supply.

The low pressure supply is supplied at less than 0.latm (liquefied gas) or less than 1 atm (compressed gas) based on the gauge pressure, the medium pressure is at least 0.1 atm and less than 2 atm (liquefied gas) or at least 1 atm and less than 10 atm (compressed gas), and the high pressure is at least 2 atm. (Liquefied gas) or at least 10 atm (compressed gas).

In addition, when the gas stored in the low pressure tank is supplied at a high pressure, it is necessary to pressurize it with a pressurizer, which may require the power of the margin.

Recently, high pressures of 10 atm or more (liquefied gas) have also been used because of the advantage that the gas can be efficiently sent in a large supply area or in the case of remote transportation.

On the other hand, when the consumer directly uses the city gas is mainly used at low pressure, the gas supplied at medium pressure and high pressure should be maintained again at the set pressure on use by the pressure reduction using a constant pressure regulator (regulator).

The process of sending the city gas to the end use place through high pressure, medium pressure, or low pressure is always preferably supplied within a set range, and the pressure raising or depressurization state by the pressure regulator used in the process is precisely performed through a separate pressure gauge. It must be measurable.

If the pressure range set to high, medium or low pressure is unstable in the process of supplying city gas to the end user through the pipe, gas leakage may be suspected and the malfunction of the regulator may be detected in advance. The importance of the test cannot but be emphasized.

However, the conventional gas pressure inspection device for checking the operation of the pressure regulator is a device for testing whether the correct performance before the installation of the various safety valves, it is used in the laboratory or safety valve manufacturers, not used in the field As it was enlarged to be portable by the meter reader, there was a problem that cannot be used to check the operation of the pressure regulator in the field.

Thus, the portable pressure gauge is connected to the connection of the pressure regulator to check the pressure of the pressure regulator, but this is merely limited to measuring the pressure of the pressure regulator. It was not possible to check precisely whether to carry out the operation of the boost or the decompression, and accordingly, by connecting a separate manual pressurization device (manual pump) to the pressure regulator in order to increase or decrease the pressure in the pressure regulator, the regulator operates in accordance with an appropriate operating standard. ) To check whether the operation of the boost or the decompression is properly performed.

However, in the manner of connecting a separate manual pressurization device as described above, since the meter reader has to increase or decrease the pressure manually, the precision of the increase or decrease of the pressure by the manual pressurization device is lowered, and thus the operating state for the pressure regulator. There is a disadvantage that the inspection is not made precisely.

In addition, since the separate manual pressurization device and the pressure gauge are connected to each of the pressure regulators in a state in which the pressure gauges are separated from each other, when the meter reader is alone, the manual pressurization device must be operated while the pressure gauge is mounted. If there is not a proper cradle for the site, the use of two meter readers is inconvenient, and the work efficiency is inevitably deteriorated.

Accordingly, the present invention is to improve the conventional problems as described above, by configuring the electric pressure function and the pressure measurement function integrally in one body, so that the pressure increase or decrease by the electric pressure pump is made precisely Quickly and on-site inspection can be carried out to check whether the pressure in the pipe used for supplying the city gas maintains the set reference pressure or whether the booster or regulator operates normally to maintain the pressure in the pipe at the set reference pressure. The portable gas pressure inspection device can be used to improve the convenience and work efficiency of the system, and to quickly and accurately check the leakage of gas from the facilities, pipes, storage tanks, and gas equipment after installing the gas service facility. The purpose is to provide.

Portable gas pressure inspection device of the present invention for achieving the above object comprises a pressure measuring port to which the first hose is connected, a pneumatic discharge port to which the second hose is connected, and a portable body to form an operation unit and a display unit on the front surface thereof, The first and second hoses are connected to the third hose through the branch pipe, and the third hose is connected to the connection pipe of the measurement target, and the inside of the main body is connected to the pressure measuring port to connect the first and third hoses. A pressure sensor for measuring the pressure in the measurement object connected through; When the pressure in the measurement object is measured by the pressure sensor while being connected to the pneumatic discharge port, the air pressurized to a constant pressure in the measurement object is examined to check whether the pressure in the measurement object maintains the set reference pressure through the second and third hoses. A pressure pump for supplying; A flow rate control valve formed between the pressure pump and the pneumatic discharge port, and having an opening angle adjusted to increase or decrease the pressure in the measurement object by adjusting a supply amount of air pressurized by the pressure pump; And an on or off control of the operation of the pressure pump according to an on or off input signal of a power button included in an operation unit, as well as an up or down input signal of a pressure control button included in an operation unit when the pressure pump is on. Control unit for controlling to up or down the pressing force of the pressure pump operating on; And a power supply unit for supplying power to the operation unit and the display unit as well as the pressure sensor, the pressure pump, the flow control valve and the control unit. It is a built-in configuration.

In addition, the pressurized pump is closed-controlled by the controller when inspecting whether the measurement target is operated at the set reference pressure, and when the inspection of the measurement target ends, the air existing in the measurement target is controlled by the controller. Solenoid valve for quick discharge; To configure the connection.

In addition, the second hose is closed when the initial pressure measurement for the measurement object is made through the pressure measurement port, and the on-off valve is opened when the pressure in the measurement object is increased or reduced through the pneumatic discharge port.

In addition, the measurement object is a constant pressure or gas pipe.

As described above, the present invention comprises the electric pressurization function and the pressure measurement function integrally formed in one main body, and the pressure in the pipe used for supplying the city gas is set so that the increase or decrease of the pressure by the electric pressurization pump is made precisely. In order to maintain the pressure or to allow the pressure regulator to quickly and directly check on the site whether the operation of the boost or the pressure is normally performed in order to maintain the pressure in the pipe at the set reference pressure, the convenience and the work efficiency are enhanced. After installing the gas service facility, it is possible to quickly and accurately check the leakage of gas from the facilities, pipes, storage tanks, and gas equipment, etc. Improve satisfaction You can expect the effect.

1 is a structural diagram of a portable gas pressure inspection device according to an embodiment of the present invention.
Figure 2 is a block diagram of the electric pressurization device applied to the portable gas pressure tester according to an embodiment of the present invention.
Figure 3,4 is a state of use of the portable gas pressure inspection device in an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a block diagram of a portable gas pressure tester according to an embodiment of the present invention, Figure 2 is a block diagram of an electric pressure device applied to the portable gas pressure tester according to an embodiment of the present invention, Figures 3 and 4 As an embodiment of the invention shows a state diagram of use of the portable gas pressure testing device.

1 to 4, the portable gas pressure inspecting apparatus according to the embodiment of the present invention may include the constant pressure regulator 100 of FIG. 3 or the FIG. 4 for maintaining a supply pressure of gas through a pipe at a predetermined reference pressure. In a state in which it is connected to the connection pipes 101 and 201 of the measurement target such as the pipe 200, it is checked whether the pressure raising or reducing operation of the pressure regulator 100 as the measurement target is normally performed, or Equipment for checking whether the internal pressure maintains a predetermined reference pressure, the pressure sensor 20, the pressure pump 30, the flow control valve 40, the control unit 50, the power supply unit 60 in one main body 10 It is configured.

The main body 10 has a pressure measuring port 11 to which the first hose h1 is connected, a pneumatic discharge port 12 to which the second hose h2 is connected, and an operation unit 13 and a display unit 14 on the front surface. The control unit 13 and the display unit 14 is configured to be electrically connected to the control unit 50.

In this case, the first and second hoses h1 and h2 are connected to the third hose h3 through a branch pipe 15, and the third hose h3 is a pressure regulator 100 or a pipe 200 that is a measurement target. It is configured to be connected to each of the connection pipe 101, 201 of the), the second hose (h2) is closed when the initial pressure measurement for the measurement object 100 is made through the pressure measuring port 11 and When opening or lowering the pressure in the measurement object 100 through the pneumatic discharge port 12, an opening / closing valve 80 opened is connected.

Here, the on-off valve 80 is to be manually controlled by the meter reader, the branch pipe 15 is connected to the first and second hoses h1 and h2, as well as the third hose h3 is connected. It is a T-shaped structure that allows.

The pressure sensor 20 is configured in the main body 10 and is connected to the pressure measuring instrument 11 while being connected to the pressure measuring device 11 through the first and third hoses h1 and h3. After measuring the pressure in the pipe 200 and converts it into an electrical signal and outputs it to the control unit 50, accordingly, the control unit 50 outputs the pressure measured by the pressure sensor 20 to the display unit 14 It is configured to display quantitatively.

The pressurized pump 30 is connected to the pneumatic discharge port 12 and at the time of measuring the pressure in the constant pressure 100 or the pipe 200 which is the measurement target through the pressure sensor 20, the second and third hoses h2 ( h3) pumping operation to supply the pressurized air at a constant pressure in the pressure regulator 100 or the pipe 200 to be measured to check whether the pressure in the pressure regulator 100 or the pipe 200 maintains the set reference pressure. The pumping operation is controlled by the controller 50.

Here, the solenoid valve 70 is configured to be connected to the pressure pump 30, and the solenoid valve 70 maintains a predetermined reference pressure or a pressure in the constant pressure 100 or the pipe 200 which is the measurement target. The closing control is performed by the control unit 50 when checking whether it operates to maintain the pressure, and at the end of the inspection of the measuring object 100, the control unit 50 controls the inside of the measuring object 100 under the control of the control unit 50. The opening control is made to discharge the existing air to the outside.

The flow control valve 40 is a needle valve formed between the pressure pump 30 and the pneumatic discharge port 12, the pressure regulator to adjust the supply amount of air pressurized by the pressure pump 30, the pressure regulator 100 or to adjust the speed to increase the pressure in the pipe 200, the pressure increase rate control is configured to be controlled manually.

That is, the controller 50 controls the operation of the pressure pump 30 on or off according to the on or off input signal of the power button 13a included in the operation unit 13 as well as the pressure pump ( 30 is configured to up or down the pressing force of the pressurizing pump 30 to be operated in accordance with the up or down input signal of the pressure control button (13d) included in the operation unit 13 during the on operation.

At this time, the operation unit 13 is a power button 13a for turning on / off the power supply of the power supply unit 60, an adjustment button 13b for zeroing the pressure in the pressure pump 30, the pressure pump 30 ) The operation button 13c for turning on / off, the pressure control button 13d for adjusting the up / down pressure of the air according to the pumping operation of the pressure pump 30 when the push signal is output from the operation button 13c, And an air discharge button 13e for generating a signal for discharging the air in the pressurized pump 30 to the outside. The signal generated from each button is output to the controller 50, and the controller ( 50) control operation is performed.

The power supply unit 60 is configured to supply power to the operation unit 13 and the display unit 14 as well as the pressure sensor 20, the pressure pump 30, the flow control valve 40 and the control unit 50. , It is a battery.

The portable gas pressure inspection apparatus according to the embodiment of the present invention configured as described above, as shown in FIGS. 1 to 4, first, respectively, to the connection pipes 101 and 201 of the constant pressure device 100 or the pipe 200 which are the measurement targets The third hose h3 is connected.

At this time, the third hose h3 is connected to the first and second hoses h1 and h2 through the branch pipe 15, and the first hose h1 is connected to the main body 10 of the gas pressure tester. The second hose (h2) is connected to the pneumatic discharge port (12) formed in the main body 10 of the gas pressure test device, the third hose (h3) is formed. Is connected to the connecting pipes 101 and 201 of the constant pressure device 100 or the pipe 200 to be measured, first, the closing valve 80 formed in the second hose h2 is closed.

Then, the gas in the pressure regulator 100 or the pipe 200 which is the measurement target is the pressure measuring port 11 of the main body 10 through the third hose h3, the branch pipe 15, and the first hose h1. Flows into.

At this time, when the meter reader presses the power switch 13a of the operation unit 13 formed in the main body 10, the pressure sensor 20 configured in the main body 10 flows into the pressure measuring port 11. The gas pressure is measured and then output to the controller 50.

Then, the control unit 50 displays the gas pressure measured by the pressure sensor 20 through the display unit 14 formed on the main body 10, thereby providing the pressure regulator 100 or the pipe 200 as the measurement target. It is possible to quantitatively check whether the pressure inside maintains the preset reference pressure.

At this time, in the state in which the gas pressure is displayed through the display unit 14, it is possible to supply the pressurized air at a constant pressure to the pressure regulator 100 to check whether the pressure regulator 100 that is the measurement target is normally operated.

That is, the meter reader checks whether the pressure raising or depressurizing operation of the pressure regulator 100, which is the measurement target, which maintains the supply pressure of the gas through the pipe at a preset reference pressure, is performed in this case. The opening and closing valve (80) formed in the) is left open.

Next, after zeroing the pressure in the pressure pump 30 through the adjustment button 13b included in the operation unit 13, the operation button 13c is pressed.

Then, the push signal of the operation button (13c) is output to the control unit 50, accordingly, the control unit 50 operates the pressure pump 30 on, so that the pressure pump 30 is a pressure regulator (the measurement target) ( It is to generate the pressurized air at a constant pressure to supply to 100).

That is, the solenoid valve 70 connected to the pressure pump 30 when the pressure operation of the pressure pump 30 is made is a closing operation by the control unit 50, accordingly the pumping of the pressure pump 30 When the air pressurized to a constant pressure is generated from the operation, the air pressurized to the constant pressure does not leak to the outside according to the closing control of the solenoid valve 70, the pneumatic discharge port 12 and the second hose (h2) And the branch pipe 15 and the third hose (h3) can be supplied to the constant pressure 100 to be measured.

Here, while the supply of the pressurized air to the pressure regulator 100 is made, when the pressure change in the pressure regulator 100 is made, the change amount is measured by the pressure sensor 20 configured in the main body 10 and then the display unit 14 is indicated.

At this time, when the meter reader up / down the pressure control button 13d provided in the operation unit 13, the up or down signal of the pressure control button 13d is output to the control unit 50, and accordingly the control unit 50. ) Controls the on / off and the pressing force of the pump, so that the supply amount of pressurized air to the pressure regulator 100 is changed, and thus the pressure in the pressure regulator 100 is elevated or reduced.

Therefore, when the air subscribed as described above adjusts the supply amount to increase or decrease the pressure in the pressure regulator 100, the pressure regulator 100 maintains the measured pressure corresponding to the change amount of the pressure at a predetermined reference pressure. Alternatively, the operation of the boosting pressure should be made, and the pressure change according to the boosting or depressurizing operation of the pressure regulator 100 is measured through the pressure sensor 20 in real time and then displayed on the display unit 14.

At this time, when the pressure raising or depressurizing operation of the pressure regulator 100 is properly performed, the set reference pressure is displayed on the display unit 14 (wherein the set reference pressure check means a pressure that the meter reader has already recognized in advance). When the reference pressure set on the display unit 14 is not displayed due to an operation error of the pressure regulator 100, the meter reader can immediately check the failure state of the pressure regulator 100 in the field, and normal operation according to the result of the check. You will be able to take additional steps to maintain your status.

Here, after the operation of checking whether the pressure regulator 100 operates at the set reference pressure is finished, the third hose h3 is connected to the connection pipe 101 or 201 of the pressure regulator 100 or the pipe 200 to be measured. After separating, the meter reader presses the air discharge button 13e included in the operation unit 13.

Then, the control unit 50 controls the opening of the solenoid valve 70 connected to the pressure pump 30 according to the pressing signal of the air discharge button 13e, and according to the opening operation of the solenoid valve 70. While the air in the pressure pump 30 is discharged to the outside, the pressure inspection of the pressure regulator 100 or the pipe 200 as the measurement target, as well as the end of the work of gas leakage inspection.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention as defined by the appended claims. It is to be understood that such changes and modifications are within the scope of the claims.

10; Main body 11; Pressure gauge
12; Pneumatic discharge port 13; Control unit
14; Display unit 15; Branch pipe
20; Pressure sensor 30; Pressurized pump
40; Flow control valve 50; Control
60; A power supply unit 70; Solenoid valve
80; On-off valve 100; A pressure regulator
200; Piping 101,201; Connector

Claims (3)

A pressure measuring port to which the first hose is connected, a pneumatic discharge port to which the second hose is connected, and a portable body which forms an operation part and a display part on the front surface, and the first and second hoses are connected to the third hose through the branch pipe. However, the third hose is connected to the connection pipe of the measurement object,
Inside the main body,
A pressure sensor connected to the pressure measurement port and measuring a pressure in a measurement object connected through first and third hoses; Supplying pressurized air at a constant pressure in the measurement target to check whether the pressure in the measurement target maintains the set reference pressure through the second and third hoses when measuring the pressure in the measurement target through the pressure sensor while being connected to the pneumatic discharge outlet. Pressurized pump; A flow rate control valve formed between the pressure pump and the pneumatic discharge port, and having an opening angle adjusted to increase or decrease the pressure in the measurement target by adjusting the supply amount of air pressurized by the pressure pump; A control operation is performed according to a signal input from the operation unit and a signal measured by the pressure sensor, and the operation of the pressurizing pump is controlled on or off according to an on or off input signal of a power button included in the operation unit. A control unit which controls to increase or decrease the pressing force of the pressurizing pump operating on according to the up or down input signal of the pressure control button included in the operation unit when the pressurizing pump is on; And a power supply unit supplying power to the operation unit and the display unit as well as the pressure sensor, the pressure pump, the flow control valve and the control unit. Portable gas pressure testing device, characterized in that comprising a. The method of claim 1, wherein the pressure pump is closed and controlled by the controller at the time of inspecting whether the measurement object is operated at a set reference pressure, and when the inspection of the measurement object is completed, the pressure pump exists in the pressure pump under control of the controller. A solenoid valve for discharging air to the outside; Portable gas pressure testing device, characterized in that the connection configuration. According to claim 1, The second hose is closed when the initial pressure measurement for the measurement object is made through the pressure measuring opening, the opening and closing valve which is opened when the pressure in the measurement object is increased or reduced through the pneumatic discharge port Portable gas pressure testing device, characterized in that the connection configuration.

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