KR200489923Y1 - Test apparatus for natural gas facility - Google Patents

Abstract

The present invention enables to perform the performance and gas leakage test of the constant pressure pilot, auxiliary equipment and small-diameter valve in the natural gas supply facilities, and can easily fix small-diameter valves, pilot and auxiliary equipment of various sizes, The present invention relates to a test apparatus for a natural gas supply system whose structure is improved to supply a pressure of nitrogen or an air fluid to a fixed natural gas supply system, and to measure and test the pressure easily.
The present invention and the base body is supported by a plurality of supports to be spaced apart from the floor bottom; A fixed vise seated on an upper side of the base body and for fixing a constant pressure pilot and an auxiliary device; The valve is formed to be detachably seated on the upper side of the base body to fix the small diameter valve to the upper side, and the connection hole is perforated so that the connecting connector connected to the adapter of the test line for supplying the test gas to the small diameter valve enters the center. A fixed plate; A supply line disposed above the base body and supplied with a compressed test gas; An adapter is provided to be connected to communicate with the supply line and to supply the test gas to a constant pressure pilot or auxiliary device fixed to the fixed vise or to a small diameter valve side, and a plurality of adapters are provided at the gas inlet side and the outlet side of the supply line. A test line installed; And a pressure gauge disposed on the base body and measuring a pressure change of the device under test after the test gas of the test line is introduced.

Description

Test apparatus for natural gas facility

The present invention relates to a test apparatus for a natural gas supply equipment, and in particular, to perform the performance and gas leakage test of the constant pressure pilot, auxiliary equipment and small-diameter valve in the natural gas supply equipment, and also to the small diameter valve of various sizes And the pilot and auxiliary equipment can be easily fixed, and the test equipment of the natural gas supply facility has been improved so that the pressure of nitrogen or air fluid can be supplied to the fixed natural gas supply facility and the pressure can be measured and tested easily. It is about.

In general, natural gas imported through LNG carriers is stored in storage tanks through unloading facilities, vaporized in vaporization facilities, and supplied to supply management offices. From this, supply is made to power plants and city gas companies. It is supplied under reduced pressure.

Liquefied natural gas (LNG) has a slightly different composition ratio depending on the mountainous region, but the boiling point of methane, the main component, is 162 ° C below zero and has a heat of 200㎉ / kg.

Therefore, liquefied natural gas stored at liquefied natural gas receiving base is vaporized into 0 ℃ and 70㎏ / ㎠ gas by using sea water in the vaporizer and then supplied to the power plant and each city gas supply control station through the main pipe. It is supposed to be done.

On the other hand, liquefied natural gas supplied from a conventional liquefied natural gas take-up base is vaporized and supplied as a gas of 0 ° C. and 70 kg / ㎠ in a vaporizer, and is supplied through a decompression facility (constant pressure device) to supply vaporized high pressure gas to a place of use. Pressure is reduced to working pressure.

Pilot, a key device of the static pressure facility, is an important device that controls the pressure and supply of gas to the consumer, and the opening degree of the main constant pressure device is changed greatly in spite of the pilot's minute operation.

The operation of the main regulator depends on the change of pressure in the pilot controlled gas (green part) at the bottom of the main regulator (ie, the diaphragm bottom area).

The maintenance quality of the regulator is very important and it is equipped with natural gas supply equipment such as pre regulator, accelerator and small caliber valve.

The small-diameter valve is for gas blocking, dissipation, and equalization. The small-diameter valve of the supply management station is generally equivalent to a valve of 4 inches or less, and is divided into welding and flange types in a manner of being connected to a pipe. Class 150 ~ 600 is used.

The pre regulator depressurizes the primary pressure in front of the main regulator to send the pressure stably to the pilot, and the accelerator increases in the rear pressure due to the loss of the pressure regulation function of the main regulator. The gas in the space under the diaphragm at the bottom of the main pressure regulator is discharged to the outside so that the main pressure regulator operates quickly up to the set supply pressure.

Prior art related to the test of the existing natural gas supply facilities, as disclosed in Korean Patent Publication No. 10-0916662 "Stability test method in the natural gas supply facility" (registration date: 2009.09.02), predetermined natural gas In the fuel pipe stability test method of a power supply system fuel supply system between a source and a natural gas demand source, water having a predetermined hydraulic pressure is supplied to a fuel pipe from a fuel supply valve attached to the natural gas supply source to the natural gas demand source. Conducting a hydro test to check the mechanical strength of the pipe by supplying; and defining a leak test section between the fuel supply valve and the emergency shutoff valve based on the emergency shutoff valve existing between the fuel supply valve and the natural gas demand source. Purging section between the emergency shutoff valve and the natural gas demand Defining and supplying nitrogen gas having a predetermined pressure to the leak test section to test whether a gas leaks from a pipe; and injecting nitrogen gas used for the leak test into the purge section, Performing purging.

By the way, when the external leakage of gas occurs in the natural gas supply facility is a failure factor and there is a serious risk of fire.

In case of abnormality such as gas leakage, it is necessary to clean and replace the parts of the pressure regulator, pilot and auxiliary equipment, exhaust the gas from the constant pressure facility, remove the pilot and auxiliary equipment, and then disassemble and repair the pilot and auxiliary equipment. Afterwards, the maintenance pilot and auxiliary equipment should be installed on the main static pressure line, and gas should be injected into the static pressure facility to perform the leak check of the complicated process of leak checking and commissioning of the static pressure facility. Not only is it troublesome to find a failure factor while repeatedly performing, but it also has a disadvantage of excessive time required for work.

Korean Patent Publication No. 10-0916662 "Stability test method in natural gas supply equipment" (registration date: 2009.09.02)

The present invention was devised to solve this problem in consideration of the above-mentioned problems. The purpose of the present invention is to perform a performance and gas leakage test of a constant pressure pilot, an auxiliary device, and a small-diameter valve in a natural gas supply facility. It is easy to fix small size valve, pilot and auxiliary equipment of size, and supply natural gas supply pressure to the fixed natural gas supply facility and supply natural gas with its structure so that it can be easily tested by measuring the pressure. The purpose is to provide a testing device for the installation.

The present invention for achieving the above object is a rectangular frame composed of first and second horizontal frames, the first and second horizontal frames are arranged to be spaced apart from the ground floor by a plurality of supports are vertically coupled to the bottom, and A vertical bar connecting one side of the first horizontal frame and one side of the second horizontal frame to divide and divide the inside of the rectangular frame into the first and second space parts, and formed inside the first space part, A first horizontal bar connecting one side and one side of the vertical bar, and formed inside the second space, connecting one side of the second type frame with the other side of the vertical bar, and spaced apart from each other; A base body composed of bars; A fixed vise seated on an upper side of the first horizontal bar and for fixing a constant pressure pilot and an auxiliary device; One side is detachably seated on the upper side of the second horizontal bar, the other side is detachably seated on the upper side of the first horizontal frame to fix the small diameter valve to the upper side, the test gas to the small diameter valve in the center A valve fixing plate having a connection hole formed therein so that the connection connector connected to the adapter of the test line for supplying the gas is connected; A supply line configured to supply test gas compressed and arranged above the first vertical frame, the second horizontal frame, and the vertical bar forming the first space; An adapter is provided to be connected to communicate with the supply line and to supply the test gas to a constant pressure pilot or auxiliary device fixed to the fixed vise or to a small diameter valve side, and a plurality of adapters are provided at the gas inlet side and the outlet side of the supply line. A test line installed; And a pressure gauge disposed above the third horizontal bar and measuring a pressure change of the test target device after the test gas of the test line is introduced.

The valve fixing plate may further include a plurality of slot holes through which the support bolts penetrate radially outwardly of the connection hole so as to pass through the lower flange of the small-diameter valve and the connection flange connected to the connection connector.

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The present invention, after fixing the test target equipment such as the constant pressure pilot and auxiliary equipment and small-diameter valve, by supplying the test gas supplied through the supply line and the test line by using a needle valve, the pressure change of the test target device to the pressure gauge or Visual observation through the pressure gauge has the advantage of performance test and diagnosis of gas leakage.

In addition, the present invention has the advantage that can be applied to the test target device having a different size by using a valve fixing plate formed with a fixed vise and a plurality of slot holes has the advantage of increasing the versatility.

1 is a block diagram showing a test apparatus of a natural gas supply facility according to the present invention.
Figure 2 is a perspective view showing the configuration of the subject innovation supply line.
Figure 3 is a perspective view showing the configuration of the subject innovation test line.
4 is a view showing a fixed vise of the present invention.
5 is a perspective view showing a small diameter valve and the valve fixing plate of the present invention.
Figure 6 is an assembled state showing a state in which the small-diameter valve is mounted on the valve fixing plate of the present invention.
7 is an exemplary view schematically showing a test test process in a state in which a constant pressure pilot which is a device under test is mounted on the fixed vise of the present invention.
8 is an exemplary view schematically showing a test test process of a small diameter valve mounted on the valve design plate of the present invention.

1 to 8, the test apparatus of the natural gas supply system according to the present invention, the first and second horizontal frame 111 is arranged to be spaced apart from the floor bottom by a plurality of supports 150 are vertically coupled to the bottom And 113, a rectangular frame 110 including first and second type frames 115 and 117, and one side of the first horizontal frame 111 and one side of the second horizontal frame 113 to connect the rectangular frame 110 with each other. Vertical bars 120 for dividing the inside of the frame 110 into first and second space parts A1 and A2, and formed inside the first space part A1, and the first type frame 115. A first horizontal bar 131 connecting one side of the first bar and one side of the vertical bar 120, and formed inside the second space A2, and one side of the second type frame 117 and the vertical bar; Connecting the other side of the 120, the base body 100 consisting of second and third horizontal bars (133, 135) spaced apart from each other, and is mounted on the upper side of the first horizontal bar 131, the pressure regulator pilot (10) ) And The fixed vise 200 for fixing the auxiliary device, one side is detachably seated on the upper side of the second horizontal bar 133, the other side is detachably seated on the upper side of the first horizontal frame 111 The small-diameter valve 50 can be fixed to the upper side, and the connection connector 355 connected to the adapter 545 of the test line 500 for supplying the test gas to the small-diameter valve 50 is entered in the center. On the upper side of the valve fixing plate 300 formed with a hole 310, the first type frame 115, the second horizontal frame 113 and the vertical bar 120 forming the first space A1. Supply line 400 is arranged and supplied to the test gas, the constant pressure pilot 10 or auxiliary equipment or small-diameter valve 50 is connected to communicate with the supply line 400 and fixed to the fixed vise (200) Adapter 545 is provided for connection to supply the test gas to the side) of the supply line 400 Test line 500 is provided on the inlet 410 side and the discharge port 420 side, and the test after the test gas of the test line 500 is placed on the upper side of the third horizontal bar (135) It consists of a pressure gauge 600 for measuring the pressure change of the target device.
As shown in FIG. 1, the base body 100 includes first and second transverse frames 111 and 113 spaced apart from the bottom of the ground by a plurality of supporters 150 vertically coupled to the lower portion of the base body 100. The inner side of the rectangular frame 110 is connected to one side of the rectangular frame 110 consisting of two kinds of frames 115 and 117, one side of the first horizontal frame 111 and one side of the second horizontal frame 113. The vertical bar 120 divided into two space parts A1 and A2, and formed inside the first space A1, and connect one side of the first type frame 115 and one side of the vertical bar 120. The second horizontal bar 131 is formed inside the second space portion A2, and connects one side of the second type frame 117 and the other side of the vertical bar 120 to be spaced apart from each other. It consists of horizontal bars 133 and 135.
In addition, the pressure gauge 600 may employ a digital pressure gauge, and is disposed to be seated on the upper side of the third horizontal bar 135 of the base body 100 and each of the connection valves 550 of the test line 500. The pressure change of the device under test is measured.
As shown in FIG. 2, the supply line 400 includes an inlet 410 on which one side of the test gas, such as nitrogen or air, is introduced, and a test gas supplied to the inlet 410. After dispensing through the discharge port 420 for discharging the supplied test gas to the outside is provided.

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Referring to FIG. 3, the test line 500 has a lower connector 510 for connecting the left and right sides of the supply line 400 to be in communication with each other, and a test pipe connected to the upper side of the lower connector 510. 520 and the needle valve 530 which is provided to communicate in the middle of the test pipe 520 and opens and closes the pressure control and the internal flow path of the test gas, and is connected in communication with the intermediate portion of the test pipe 520 A connection hose 540 for supplying a test gas to the adapter 545 side, and connected to the outside of the upper portion of the test pipe 520 to discharge the test gas to the outside and to supply the test gas to the pressure gauge 600 side. It is composed of a valve 550, and a pressure gauge 560 connected to the upper side of the test pipe 520 to measure the pressure of the test gas passing through the test pipe 520.

The lower connector 510 has a structure that connects the left and right sides of the divided pipes of the supply line 400 and communicates the test gas to the test pipe 520.

The needle valve 530 adjusts the pressure of the test gas supplied into the device under test or checks the state of the device under test while measuring the variable pressure after the connection valve 550 is connected to the pressure gauge 600. The function to cut off the supply of

The connection hose 540 is provided with an adapter 545 at the end to be connected to the device under test (natural gas supply equipment, such as a constant pressure pilot 10, auxiliary equipment and small-diameter valve 50) and made of a flexible material It is composed.

Referring to FIG. 4, the fixed vise 200 is seated on an upper side of the first horizontal bar 131 of the base body 100, and the first forest bit 131 to fix the constant pressure pilot 10 and the auxiliary device. Vise body 210 is fixed to the side, the fixed block 220 is fixed to the upper surface of the vise body 210, and is provided symmetrically to the fixing block 220 and the upper side of the vise body 210 The moving block 230 is moved forward and backward, the screw rod 240 for moving the moving block 230 forward, backward, and the vise body 210 so that the screw rod 240 is penetrated and fastened It is composed of a support block 250 is installed on the upper side of the handle shaft 245 coupled to the end of the screw rod 240 to assist the rotation of the screw rod 240.

That is, the fixed vise 200 is the screw rod 240 is rotated forward and backward in a state that is fastened to the support block 250 by rotating the screw rod 240 via the handle shaft 245, the screw rod ( As the moving block 230 moves forward and backward of the 240, the constant pressure pilot 10 or the auxiliary device may be fixed to be gripped between the moving block 230 and the fixed block 220 during the forward operation.

5 and 6, the valve fixing plate 300 is a plate structure that is bolted to the upper side of the second horizontal bar 133 and the upper side of the first horizontal frame 111, the connection flange 350 in the center The connection hole 310 is formed so that the connection connector 355 connected to the through).

In addition, the valve fixing plate 300 is formed to communicate radially to the outside of the connection hole 310, a plurality of slots through which the support bolt 360 penetrates through the lower flange 55 of the small-diameter valve 50. Ball 320 is formed.

The connection flange 350 is formed in a form corresponding to the lower flange 55 of the small diameter valve 50, and a hollow is formed in the center thereof is connected to communicate with the inside of the small diameter valve 50.

According to the present invention having such a configuration, after mounting the constant pressure pilot 10 or the auxiliary device, which is a test target device, on the fixed vise 200, the screw rod 240 is advanced to move the moving block 230 forward to move the constant pressure pilot ( 10) or fix the auxiliary device to be gripped between the moving block 230 and the fixed block 220.

Subsequently, as shown in FIG. 7, after connecting the connection hose 540 of the test line 500 to the test target device fixed to the fixed vise 200 using the adapter 545, the external gas storage. The test gas supplied to the tank 40 and supplied through the supply line 400 is supplied to the device under test through the test pipe 520, and the test gas is variably supplied through the needle valve 530. You can carry out inspection work such as leakage of equipment.

After the inspection work of the test target device fixed to the fixed vise 200 is completed, the screw bar 240 is moved backward to move the moving block 230 from the fixed block 220 to fix the test subject device 200 After separating from), the other test subject can be bitten by the fixed vise 200 to repeat the test operation.

On the other hand, the test operation of the small diameter valve 50 is fixed to the small diameter valve 50 to be seated on the upper side of the valve fixing plate 300, the fixing operation of the small diameter valve 50 and the valve fixing plate 300 is Referring to FIG. 5 and as shown in FIG. 8, the lower flange 55 of the small-diameter valve 50 is seated and connected to the connection flange 350 seated on the upper side of the valve fixing plate 300. The support bolts 360 penetrating the lower flange 55 and the connecting flange 350 are coupled to penetrate the plurality of slot holes 320, and the support nuts 370 are fastened to the ends of the support bolts 360. The aperture valve 50 and the connecting flange 350 are fixed to the valve fixing plate 300.

At this time, since the radial slot hole 320 is formed radially outward of the connection hole 310, the lower flange 55 of the small diameter valve 50 and the size allowed for the length of the slot hole 320 and Even if the outer diameter of the connection flange 350 is different, the assembly is possible, and thus the small diameter valve 50 having various sizes may be fixed to the valve fixing plate 300.

Subsequently, the test gas is fixed to the valve fixing plate 300 through the connection hose 540 of the test line 500 by connecting the connection connector 355 connected to the adapter 545 to the lower portion of the connection flange 350. Supply to the aperture valve 50 side.

Therefore, the present invention is to fix the test gas supplied through the supply line 400 and the test line 500 after fixing the test target equipment, such as the constant pressure pilot 10 and the auxiliary equipment and small-diameter valve 50 needle valve ( By variably supplying using 530, the pressure change of the device under test can be visually observed through the pressure gauge 600 or the pressure gauge 560 to diagnose the performance test and gas leakage.

In addition, the present invention has the advantage that can be applied to other test subject devices of different sizes by using the valve fixing plate 300 is formed with a fixed vise 200 and a plurality of slot holes 320 has the advantage of increasing the versatility.

As described above, in the detailed description of the present invention, specific embodiments have been described, but various modifications are possible without departing from the scope of the present invention. Therefore, the scope of the present invention should not be limited to the embodiments described above, but should be defined by the claims below and equivalents thereof.

That is, the present invention as described above is not limited to the specific preferred embodiment described above, who has ordinary knowledge in the technical field to which the present invention belongs without departing from the spirit of the present invention claimed in the claims Various modifications may be made, of course, and such changes are within the scope of the claims.

10: constant pressure pilot 40: gas storage tank
50: small diameter valve 55: lower flange
100: base body 110: frame
120: vertical bar 131, 133, 135: 1, 2, 3 horizontal bar
150: support 200: fixed vise
210: vise body 220: fixed block
230: moving block 240: screw rod
245: handle shaft 250: support block
300: valve fixing plate 310: connection hole
320: slot hole 350: connection flange
355: Connector 360: Support Bolt
370: support nut 400: supply line
410: inlet 420: outlet
500: test line 510: lower connector
520: test piping 530: needle valve
540: connection hose 545: adapter
550: connecting valve 560: pressure gauge
600: pressure gauge

Claims (3)

A plurality of support members 150 are vertically coupled to the lower portion of the rectangular frame 110 composed of first and second horizontal frames 111 and 113 and first and second type frames 115 and 117 spaced apart from the ground floor. ) And one side of the first horizontal frame 111 and one side of the second horizontal frame 113 to divide and divide the inside of the rectangular frame 110 into first and second space parts A1 and A2. A vertical bar 120 and a first horizontal bar 131 formed inside the first space A1 and connecting one side of the first type frame 115 to one side of the vertical bar 120; And second and third horizontal bars 133 and 135 formed inside the second space A2 and connecting one side of the second type frame 117 to the other side of the vertical bar 120 and spaced apart from each other. A base body (100) consisting of;
A fixed vise 200 seated on an upper side of the first horizontal bar 131 for fixing a constant pressure pilot 10 and an auxiliary device;
One side is detachably seated on the upper side of the second horizontal bar 133, the other side is detachably seated on the upper side of the first horizontal frame 111 can be fixed to the small diameter valve 50 on the upper side. The valve fixing plate 300 is formed with a connection hole 310 formed therein so that the connection connector 355 connected to the adapter 545 of the test line 500 for supplying the test gas to the small diameter valve 50 enters the center thereof. ;
Supply line 400 is provided above the first type frame 115, the second horizontal frame 113 and the vertical bar 120 forming the first space (A1) and the compressed test gas is supplied and;
Adapter 545 for connection to supply the test gas to the constant pressure pilot 10 or auxiliary device or small-diameter valve 50 side is connected to communicate with the supply line 400 and fixed to the fixed vise (200). A test line 500 provided with a plurality of gas inlets 410 and outlets 420 of the supply line 400; And
It is disposed on the upper side of the third horizontal bar 135 and provided with a pressure gauge 600 for measuring the pressure change of the device under test after the test gas of the test line 500 flows in; Test equipment.
The method according to claim 1,
The valve fixing plate 300 is formed to communicate radially outwardly of the connection hole 310 to the connection flange 350 connected to the lower flange 55 of the small diameter valve 50 and the connection connector 355. Test device of the natural gas supply facility characterized in that it further comprises a plurality of slot holes 320 through which the support bolts 360 are penetrated. delete

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