KR20040041997A - Air supply apparatus suppling air with fixed quantity and constant pressure - Google Patents

Abstract

PURPOSE: An air supplying apparatus capable of supplying air with fixed quantity and pressure is provided to test leakage of a hydraulic system by supplying air with fixed quantity and pressure. CONSTITUTION: An air supplying apparatus includes an air source(100), a pump(110), and a storage tank(120). First and second pressure adjustment sections, first and second flow rate adjustment sections, first and second air discharge sections, and an intermediate connection member(160) are provided at a downstream portion of the storage tank(120). The air source(100) includes a hose(101) and a coupler(102). A filter(103) is provided to filter impurities from air passing through the coupler(102). A pilot switch(105) and a relieve valve(106) are installed so as to adjust pressure.

Description

Air supply apparatus suppling air with fixed quantity and constant pressure

The present invention relates to an air supply device for supplying air at fixed pressure and static pressure, and more particularly, to quantitatively supply air at a flow path, and to supply air at constant pressure, when supplying air at a constant pressure when inspecting leakage of various hydraulic systems. It relates to an air supply device for supplying.

In general, devices that generate power by burning fossil fuels such as aircraft, ships, and automobiles have a separate fuel tank inside the device, and a predetermined amount of fuel is pumped from the fuel tank through a separate fuel system. It is supposed to gain power by burning.

In particular, abnormalities in the fuel system for fueling the aircraft may cause fatal accidents depending on the rapidly changing surrounding conditions of the aircraft, unlike shelves or automobiles. In practice, the proportion of air system accidents caused by poor fuel system is much higher than that caused by other causes, and therefore, above all, the precise test and diagnosis of such fuel system must be preceded by aircraft.

However, until now, the apparatus for properly testing the leakage of the fuel system of the aircraft at the time of manufacture or maintenance of the aircraft has not been provided, and for this reason, there is a problem in that the manufacture and maintenance of more reliable aircraft cannot be made.

The present invention is to solve the above-mentioned problems, the object of the present invention is to supply the air in a fixed amount, static pressure according to the conditions of use to check the leakage in various fuel systems and other hydraulic systems in the hydraulic system It is to provide an air supply device for supplying air at a quantitative and constant pressure to test for leakage.

1 is a block diagram of an air supply apparatus according to the present invention.

2 is a hydraulic circuit diagram showing an air supply device according to the present invention.

** Description of the symbols for the main parts of the drawings **

100 Air Supply

110 ... air pump

120 storage tank

160 ... intermediate connecting member

200 ... Test Subject

Air supply device for supplying air at a fixed pressure, constant pressure according to the present invention for achieving the above object is an air supply source; A pump for pumping air supplied from the air supply source; A storage tank in which the air pumped from the pump is stored; A pressure regulator supplying air supplied from the storage tank to a predetermined pressure; Flow control unit for supplying the pressure adjusting unit rough air in a predetermined amount; It characterized in that it comprises an air discharge unit for discharging the air passed through the flow rate control unit to the test object side.

And preferably the pressure regulating part comprises a pressure regulator for adjusting the air pressure at the predetermined pressure, and the flow rate adjusting part has a flow meter for adjusting the amount of air at the predetermined amount downstream of the pressure regulator. do.

In addition, preferably between the air discharge unit and the test object is characterized in that the intermediate connecting member for connecting the air discharge unit and the test object to each other is installed.

Hereinafter, one preferred embodiment according to the present invention will be described in detail with reference to the drawings.

Air supply device for supplying air at a constant pressure, constant pressure according to the present invention has an air supply source 100, a pump 110 and a storage tank 120, as shown in Figure 1 and 2, the storage tank 120 Downstream of the pressure control unit 130, 170 and the flow control unit 140, 180 and the air discharge unit 150, 190 and the air discharge unit 150, 180 for supplying air to the end And an intermediate connection member 160 for connecting the test object 200 with each other.

More specifically, each of the components, first, the air supply 100 is provided with a hose 101 and a coupler 102 to supply the air provided from the outside at a maximum pressure of 7BAR, and passes through the coupler 102 A filter 103 for purifying air is mounted.

In addition, the filter 103 is branched into a plurality of flow paths. The pumped air is directly supplied to the pump 110, and the air for generating power of the pump 110 is driven through the pressure regulator 104 for the pump. It is provided at a pressure suitable for generation.

At this time, in order to adjust the supply pressure is too excessive, the air pilot switch 105 and the relief valve 106 is mounted on the flow path separately, the relief valve 106 is set to 85BAR. The relief valve 106 is also connected to the storage tank 120 to set the air storage pressure of the storage tank 120 to 85 BAR.

On the other hand, downstream of the storage tank 120 is implemented a pressure control unit 130, 170, flow rate control unit 140, 180 and air discharge unit 150, 190, these two flow paths on the branch Each is implemented separately.

Each of these branched flow paths is optionally applied when it is necessary to be applied differently depending on the pressure and amount of air provided and the type and specification of the hydraulic system to be connected. Therefore, in another embodiment, only one flow path may be formed, or three or more flow paths may be separately implemented.

According to an embodiment of the present invention, two flow paths are implemented by branching. The pressure of air supplied from the first flow path is set to 5-60 PSI, and the pressure of air supplied from the second flow path is set to 0-200 PSI. .

In the first embodiment of the present invention, the first pressure regulator 131 and the first pressure gauge (1) as the first pressure control unit 130 for first adjusting the air supplied from the storage tank 120 to 5-60PSI 132, a first flow meter 141 and a first flow indicator 142 are installed as the first flow control unit 140, and a first opening / closing valve 143 is installed downstream thereof. And downstream of the first opening / closing valve 143, a first air discharge part 150 consisting of a hose 151 and a connection nut 152 is provided.

In the case of the second flow path, first, the second pressure regulator 171 and the second pressure gauge 172 are provided as the second pressure adjusting unit 170 for adjusting the air supplied from the storage tank 120 to 0-200 PSI. As the second flow rate adjusting unit 180, the second flow meter 181 and the second flow indicator 182 are installed, and the second opening / closing valve 183 is installed downstream thereof. In addition, a second air discharge unit 190 including a hose 191 and a connection nut 192 is installed downstream of the second opening / closing valve 183.

On the other hand, each air discharge unit 150, 190 is equipped with a separate intermediate connecting member 160 made of a pressure gauge and a hose. The intermediate connecting member 160 prevents damage and damage of the test object 200 generated when the air discharge unit 150 and 190 are directly connected to the test object 200, and also various types of test object 200. It is to enable the test by selectively employing the intermediate connecting member 160 for the).

Therefore, the intermediate connecting member 160 is manufactured to a specification that the size of the inlet can be connected to the first air discharge unit 150 and the second air discharge unit 190, in the case of the outlet and the specification of the test object 200 It must be manufactured to be combined. Therefore, various kinds of intermediate connection members 160 may be necessary according to the test object 200.

Finally, the air supply device for supplying air at a constant pressure and positive pressure of the present invention is provided with a vacuum pump 210 on one side of the device. This vacuum pump 210 is to be used for cleaning the surroundings of the device.

Hereinafter will be described the operation state of the air supply device for supplying air at a fixed pressure, constant pressure according to the present invention configured as described above.

According to the present invention, the air supply device for supplying air at a constant pressure and positive pressure is first supplied with air from the outside to the air supply source 100, and the air supplied primarily is purified through the filter 103 and then directly for pumping. The air is supplied to the pump 110, and the air for power generation of the pump 110 is supplied to the pump 110 through the pressure regulator 104 for the pump to drive the pump 110.

At this time, through another branched flow path, it is determined whether the pressure of the air supplied through the pilot switch 105 and the relief valve 106 separately installed is made to control the pressure state stably.

And the air passed through the pump 110 is first stored in the storage tank 120, the air stored in the storage tank 120 is supplied to the pressure regulator 130, 170 for later use. At this time, the air supplied is supplied to the first pressure control unit 130 and the second pressure control unit 170, the use of the supplied air is selectively depending on the operating state of each of the opening and closing valves (143, 183) Is done.

That is, when the first opening / closing valve 143 is turned on and the second opening / closing valve 183 is turned off, air passes through the first pressure regulator 131 of the first pressure regulating unit 130 in a range of 5 to 60 PSI. After the pressure is adjusted, the first flow meter 140 is supplied with the positive pressure and the fixed quantity set via the first flow meter 141. Finally, the intermediate connecting member 160 is passed through the first air discharge unit 150. It is supplied to the test object 200 through.

When the second opening / closing valve 183 is turned on and the first opening / closing valve 143 is turned off, the air passes through the second pressure regulator 171 of the second pressure regulating unit 170 in the range of 0-200 PSI. After this is adjusted, it is supplied at a constant pressure and quantity set through the second flow meter 181, which is the second flow rate adjusting unit 180, and finally through the intermediate connecting member 160 via the second air discharge unit 190. The test object 200 is supplied.

Meanwhile, at the same time, air may be supplied to two different test objects 200. At this time, when the air is supplied while both the first open / close valve 143 and the second open / close valve 183 are turned on, the respective pressures may be reduced. Air is supplied to the two test objects 200 simultaneously through the control unit 130, 170, the flow control unit 140, 180 and the respective air discharge unit 150, 190.

As described above, the air supply device for supplying air at fixed pressure and positive pressure according to the present invention is to supply air at a constant pressure and quantitative pressure suitable for a test, and in particular, precisely control when inspecting whether there is leakage in the fuel system of an aircraft. By supplying the compressed air, more accurate test results can be obtained.

Unlike the above-described embodiment, the air supply device according to the present invention may be applied by modifying a part of the configuration, but basically, all of them provided with a pressure control unit and a flow control unit on the same flow path to supply air for inspection It should be considered to be included in the technical scope of the present invention.

The air supply device for supplying air at a constant pressure and positive pressure according to the present invention as described above enables the fuel and fluid to be leaked efficiently beforehand during manufacturing or maintenance of various fuel lines and hydraulic systems. It also allows for improved operational reliability of the line and hydraulic systems, and also enables the selective and simultaneous testing of two different hydraulic systems.

Claims (3)

Air source; A pump for pumping air supplied from the air supply source; A storage tank in which the air pumped from the pump is stored; A pressure regulator supplying air supplied from the storage tank to a predetermined pressure; Flow control unit for supplying the pressure adjusting unit rough air in a predetermined amount; Air supply device for supplying air at a fixed pressure, characterized in that the air discharge unit for discharging the air passed through the flow rate control unit to the test object side. 2. The pressure regulator of claim 1, wherein the pressure regulator includes a pressure regulator for adjusting the air pressure at the predetermined pressure, and the flow rate regulator is provided with a flow meter for controlling the amount of air downstream of the pressure regulator at the predetermined amount. Leakage inspection device for supplying air at a fixed rate, constant pressure. According to claim 1 or 2, wherein the air discharge portion and the test object between the air discharge portion and the test object, characterized in that the intermediate connecting member for connecting the test object with each other, characterized in that the air for supplying air at a constant pressure Feeder.