KR100956062B1 - Fluid fill-up apparatus - Google Patents

Abstract

The present invention relates to a fluid filling device.

The fluid filling apparatus according to the present invention connects the filling portion and the blow down portion to one common flow passage, and includes a composite valve device integrally formed upstream of the common flow passage to facilitate construction and maintenance as well as to improve filling efficiency. Let's do it.

Fluid, Filling, Compound Valve, Common Flow

Description

Fluid Filling Device {FLUID FILL-UP APPARATUS}

The present invention relates to a fluid filling device. More specifically, the present invention provides a fluid filling apparatus for filling a fluid, such as natural gas, with an object to be charged, such as an automobile.

BACKGROUND Fluid filling devices are known for filling fluids to be charged, such as motor vehicles, from fluid sources such as natural gas sources. 1 shows a configuration of a conventional fluid filling apparatus.

As shown in FIG. 1, the fluid filling apparatus for filling a fluid to be charged 50 includes a fluid supply source 10, a complex valve 20, a low pressure tank 30, and a pressurizing part 40 using a hydraulic circuit. Are connected to each other, the fluid filling device is a charging unit (A) and the pressurizing portion 40 for temporarily storing the fluid supplied from the fluid supply source 10 and pressurized to a set pressure to charge the object to be charged (50) And a blow down portion (B) for recovering the fluid supplied from the downstream of the low pressure tank (30).

In the conventional fluid filling apparatus, the filling part A is a valve body of a supply source side flow path 61 connected to a fluid supply source 10 such as natural gas, and a composite valve 20 connected to the supply source side flow path 61. A first valve portion 23 connected to the intra-valve filling flow path 62 and the intra-valve filling flow path 62 formed therein and shorting the intra-valve filling flow path 62 is provided.

The valve-side filling passage 64 is connected to the first valve portion 23, the low-pressure tank 30 for storing the fluid, and the pressurizing portion 40 for pressing the fluid to a predetermined pressure. And an object-side filling flow path 65 connected to the pressurizing portion 40 to transfer the fluid to the object to be charged 50. In the fluid filling, the downstream end of the object-side filling passage 65 is connected to the object to be charged 50, for example, an automobile tank, via the second filter 90.

Further, on the valve side filling flow path 64, a backflow prevention part 25 may be provided to prevent fluid from flowing back from the low pressure tank 30 side to the composite valve 20 side, and further, from the fluid supply source 10. A first filter 24 may be installed to remove impurities contained in the fluid to be supplied.

On the other hand, the blowdown part B of the fluid filling apparatus 20 is the object-side blowdown flow path 66 connected to the middle of the object-side filling flow path 65, and the composite valve 20 connected to the object-side blowdown flow path 66. And a second valve portion 22 which is connected to the intra-valve blow down flow passage 67 and the intra-valve blow down flow passage 67 formed in the main body of the valve) and short-circuits the intra-valve blow down flow passage 67.

When the fluid is charged from the fluid supply source 10 to the object to be charged 50 using the fluid filling device including the filling part A and the blow down part B, the end of the object side filling passage 65 is closed. After connecting to the object to be charged 50, the second valve portion 22 is blocked and the pressurizing portion 40 is driven while the first valve portion 23 communicates with the driving of the electronic device 21. The fluid supplied from the fluid supply source 10 side by the driving of the unit 40 is the first valve portion 23, the backflow prevention portion 25, the first filter 24, the low pressure tank 30, the pressurization portion ( 40) is conveyed to the object to be charged 50 through.

Then, as the filling of the object to be charged 50 proceeds, the pressure of the discharge side natural gas of the pressurizing unit 40 rises, and the high pressure sensor 82 installed on the discharge side of the pressurizing unit 40 detects it. When the discharge fluid pressure of the pressurizing part 40 reaches the set pressure value, the driving of the pressurizing part 40 is stopped. Subsequently, the electronic device 21 communicates with the second valve portion 22 while blocking the first valve portion 23, and the discharge side fluid of the pressurization portion 40 causes the object-side blow down flow path 66 and the second to flow. Recovered to the low pressure tank 30 through the valve portion 22, the pressure of the discharge side of the pressure portion 40 is lowered.

On the other hand, the suction side fluid pressure of the pressurizing section 40 detected by the low pressure sensor 81 reaches the set pressure value of the low pressure side pressure control valve 26 due to abnormal operation of the pressurizing section 40 or the like. In one case, the low pressure side pressure control valve 26 communicates with the low pressure side reflux flow passage 68 connected to the valve side filling flow path 64 to return the fluid to the fluid supply source 10 to intake the suction side of the pressurization portion 40. Lowers the fluid pressure.

In addition, although the driving of the pressurizing part 40 should be stopped, the pressurizing part 40 continues to be driven so that the fluid pressure detected by the high pressure pressure sensor 82 is set to the set pressure of the high pressure side pressure control valve 27. When reaching, the high pressure side pressure control valve 27 communicates with the blow down flow path 67 in the valve and the high pressure side reflux flow path 69 connected thereto to the low pressure tank 30 from the side to be charged 50. By refluxing the fluid, the pressure on the discharge side of the pressurization portion 40 is lowered.

However, in the above-described conventional fluid filling apparatus, a valve side blow down flow passage 63 and a valve side filling flow passage 64 are separately formed downstream of the composite valve 20, and are flowed back to the valve side filling flow passage 64. Since the prevention part 25 and the first filter 24 are connected, various piping elements are required in addition to the composite valve 20, and components such as a pipe, a seam, a screw for pipes, etc. are used outside the composite valve 20. As a plurality of elements must be added, there is a problem in that construction and maintenance of the fluid filling device are difficult.

In the conventional fluid filling apparatus, since the first valve portion 23 and the second valve portion 22 respectively connected to the valve side filling flow path 64 and the valve side blow down flow path 63 are formed separately, In the event of a malfunction of the valve, there was a possibility that both the first valve portion 23 and the second valve portion 22 may communicate or all may be shut off.

In addition, in the conventional fluid filling apparatus, since the first filter 24 is located downstream of the composite valve 20, there is a possibility that the composite valve 20 may be blocked or fail due to impurities contained in the fluid.

Furthermore, in the conventional fluid filling apparatus, since some of the essential valve elements are disposed to be distributed downstream of the composite valve 20, fluid leakage occurs downstream of the composite valve 20, so that the pump efficiency of the pressurizer 40 and the object to be charged ( There was a problem that the charging efficiency for 50) is lowered.

The present invention has been made to solve the above-mentioned problems, and an object thereof is to provide an improved fluid filling apparatus.

According to an aspect of the present invention, there is provided a fluid filling apparatus, comprising: a fluid source storing a fluid to be supplied to an object to be charged, a low pressure tank storing the fluid supplied from the fluid source, and a fluid downstream of the low pressure tank. A pressurizing part for pressurizing to a set pressure and for feeding the object to be charged through the object side filling passage, between the fluid supply source and the low pressure tank, and between the object side filling passage and the low pressure tank, the low pressure from the fluid supply source; A composite valve for controlling the fluid flow supplied to the tank and the fluid flow recovered to the low pressure tank through the object side blow down flow path connected to the object side filling flow path and supplying the fluid supplied from the fluid source to the low pressure tank. And simultaneously withdrawn from the object side filling passage One common flow path for supplying fluid to the low pressure tank.

In this case, the composite valve includes a first valve portion for shorting the flow of fluid from the fluid supply source to the low pressure tank, and a second valve portion for shorting the flow of fluid between the object-side blowdown flow passage and the low pressure tank. The composite valve may be controlled to be interlocked with each other such that the second valve part is blocked when the first valve part is in communication, and the second valve part is in communication with each other when the first valve part is blocked.

Preferably, the first valve portion and the second valve portion are integrally formed, and the first valve portion and the second valve portion may be electronically driven controlled.

The fluid filling device includes a low pressure pressure sensor for measuring a fluid pressure on the suction side of the pressurization portion, a low pressure side reflux flow path connecting the common flow path and the fluid supply source, and a low pressure side pressure control valve for controlling a short circuit between the low pressure side reflux flow path. It may further include.

In this case, the low pressure side pressure control valve communicates when the pressure detected by the low pressure pressure sensor is equal to or higher than a set pressure, and returns the fluid to the fluid supply source through the common flow path and the low pressure side reflux flow path.

On the other hand, the fluid filling device, the high pressure pressure sensor for measuring the fluid pressure of the discharge side of the pressurizing portion, the high pressure side reflux flow path connecting the common flow path and the object side blow down flow path and the short circuit of the high pressure side reflux flow path control It may further include a high pressure side pressure control valve.

At this time, the high pressure side pressure control valve communicates when the pressure detected by the high pressure pressure sensor is equal to or higher than a set pressure, and returns the fluid to the low pressure tank through the object side blow down flow passage and the common flow passage.

According to a fluid filling apparatus according to an embodiment of the present invention, the filling fluid and the recovering fluid are configured to be delivered to the low pressure tank through one common flow passage connected downstream of the composite valve, and all the essential valve elements are upstream of the common flow passage. The valve element can be formed into a single composite valve.

In addition, according to the fluid filling apparatus according to an embodiment of the present invention, in the case of forming one compound valve, a plurality of valve devices are connected by using components such as pipes, seams, pipe screws, etc. from the outside of the compound valve as in the related art. The construction of the fluid filling device is very simple since there is no need to make it necessary, and the maintenance of the fluid filling device is simplified, and the maintenance of the fluid filling device can be solved by replacing only the composite valve located upstream of the common flow path. There is this.

In addition, according to the fluid filling apparatus according to an embodiment of the present invention, in the composite valve, the first valve unit and the second valve unit are configured to interlock with each other in opposite directions, and are connected to one common flow path through one outlet. Therefore, the phenomenon in which both the first valve portion and the second valve portion communicate or are blocked by the malfunction of the electronic device can be fundamentally prevented.

In addition, according to the fluid filling apparatus according to an embodiment of the present invention, since the first filter is located upstream of the first valve part, impurities contained in the fluid may be removed before the supply fluid passes through the first valve part. Impurities contained in the fluid can prevent clogging or failure of the composite valve.

In addition, according to the fluid filling apparatus according to an embodiment of the present invention, since the essential valve elements are disposed upstream of the common flow path in the form of a composite valve, fluid leakage in the downstream of the composite valve is reduced, thereby improving the pump efficiency and pressure of the pressurizer. The charging efficiency for the charging object is improved.

DETAILED DESCRIPTION Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art may easily implement the present invention. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. In the drawings, parts irrelevant to the description are omitted in order to clearly describe the present invention, and like reference numerals designate like parts throughout the specification.

Throughout the specification, when a part is said to "include" a certain component, it means that it can further include other components, without excluding the other components unless otherwise stated.

Hereinafter, a fluid filling apparatus according to an embodiment of the present invention will be described with reference to FIG. 2.

2 is a view showing a fluid filling apparatus according to an embodiment of the present invention.

As shown in FIG. 2, the fluid filling apparatus according to the present invention is a fluid filling apparatus for filling a fluid to be charged 500 with a fluid source 100, a composite valve 200, a low pressure tank 300, The pressurizing part 400 is interconnected by a hydraulic circuit, and is divided into a charging part A and a blow down part B.

The fluid filling apparatus shown in FIG. 2 has described an example of a natural gas as a fluid, a natural gas supply as a fluid source, and an automobile tank as an object to be charged, but the scope of the present invention is not limited thereto.

The charging unit A temporarily stores the fluid supplied from the fluid source 100, pressurizes the fluid to a pressure set by the pressurizing unit 400 to fill the object to be charged 500, and the blowdown unit B The fluid supplied downstream of the pressurization unit 400 is configured to be recovered to the low pressure tank 300.

The filling part A is a valve formed in the main body of the supply source side filling flow path 601 connected to the fluid supply source 100 which supplies a fluid like natural gas, and the composite valve 200 connected to the supply source side flow path 601. A first valve portion 230 is connected to the filling flow path 602 and the in-valve filling flow path 602 to short-circuit the intra-valve filling flow path 602.

Subsequently, a common flow path 603 is connected to the first valve part 230, and a low pressure tank 300 for storing fluid and a pressurizing part such as a pump or a compressor that pressurizes the fluid to a predetermined pressure are connected to the common flow path 603. An object side filling flow passage 605 connected to the 400 and the pressurizing unit 400 to transfer the fluid to the object to be charged 500 is provided.

On the other hand, the filling flow path 602 in the valve is provided with a backflow prevention unit 250 for preventing the flow of the supplied fluid back and a first filter 240 for removing impurities contained in the fluid supplied from the fluid source 100 Can be. Further, a second filter 900 may be provided at the downstream end of the object-side filling channel 605 to remove impurities contained in the fluid supplied from the pressurizing unit 400.

The blow down portion B of the fluid filling device is provided in the main body of the compound side blow down flow path 606 connected to the object side blow down flow path 605 and the composite valve 200 connected to the object side blow down flow path 606. The 2nd valve part 220 which short-circuites the formed in-valve blowdown flow path 607 and the in-valve blowdown flow path 607 is provided, and the common flow path 603 is connected to the 2nd valve part 220 again.

The composite valve 200 includes a first valve unit 230, a second valve unit 230, and an electronic device 210 that controls a short circuit between the first valve unit 230 and the second valve unit 220. In addition, the in-valve filling flow path 602 and the in-valve blow down flow path 607 are connected to one common flow path 603 via the composite valve 200 including the first valve part 230 and the second valve part 220. Is connected.

In the operation of the composite valve 200, the short circuits of the first valve unit 230 and the second valve unit 220 are interlocked with each other by a control driving of the electronic device 210. That is, when fluid is supplied from the fluid supply source 100 to the low pressure tank 300, the first valve part 230 communicates with the fluid to be supplied from the in-valve filling flow path 602 to the common flow path 603. The second valve unit 220 is blocked. On the contrary, when the fluid is recovered to the low pressure tank 300 through the blowdown flow path 607 in the valve, the second valve portion 220 communicates with the fluid from the blowdown flow path 607 in the valve to the common flow path 603. Is recovered, and the first valve unit 230 is cut off.

The first valve unit 230 and the second valve unit 220 are configured to operate in opposite directions by a control drive of the electronic device 210 installed in the valve body, and operate selectively through one common flow path 603. The filling fluid and the recovery fluid can be delivered to the low pressure tank 300.

When the fluid is charged from the fluid supply source 100 to the object to be charged 500 using the fluid filling device including the filling part A and the blow down part B, the end of the object-side filling flow path 605 is turned off. After connecting to the 500, the second valve unit 220 is blocked while driving the pressurizing unit 400 while communicating with the first valve unit 230 by driving the electronic device 210. The fluid supplied from the fluid supply source 100 side by the driving of) is supplied to the supply source side filling flow path 601, the in-valve filling flow path 602, the first filter 240, the backflow preventing part 250, and the first valve part. It passes through the common flow path 230, the common flow path 603, the low pressure tank 300, the pressurizing part 400, the object side filling flow path 605, and the 2nd filter 900, and is conveyed to the object to be charged 500. FIG.

Thereafter, as the filling target 500 is filled, the pressure of the discharge side fluid of the pressurization unit 400 increases, and the pressurization unit detected by the high pressure pressure sensor 820 installed on the discharge side of the pressurization unit 400. When the discharge side fluid pressure of 400 reaches the set pressure value, the driving of the pressurization unit 400 is stopped, and the electronic device 210 blocks the first valve unit 230 while the second valve unit 220 is blocked. , And the discharge fluid of the pressurization unit 400 passes through the object-side blowdown flow path 606 and the in-valve blowdown flow path 607, the second valve part 220, and the common flow path 603. Recovered to 300 is introduced, the pressure of the fluid on the discharge side of the pressing unit 400 is lowered.

On the other hand, when the fluid pressure detected by the low pressure sensor 810 reaches the set pressure of the low pressure side pressure control valve 260 due to abnormal operation of the pressurizing unit 400 or the like, the low pressure side pressure control valve 260 communicates the low pressure side reflux flow path 608 connected to the common flow path 603 to reflux the fluid to the fluid supply source 100 to prevent an abnormal increase in the pressure of the suction side fluid of the pressurizing part 400. do.

In addition, although the discharge side fluid pressure of the pressurization unit 400 has reached the set pressure value, the pressurization unit 400 continues to be driven, so that the fluid pressure detected by the high pressure pressure sensor 820 causes the high pressure side pressure control valve ( When the set pressure of 270 is reached, the high pressure side pressure control valve 270 communicates with the high pressure side reflux flow path 609 connected to the common flow path 603 to prevent the low pressure tank (from the blowdown flow path 607 in the valve). By refluxing the fluid to 300, the pressure of the fluid on the discharge side of the pressurization unit 400 is prevented from rising abnormally.

According to one embodiment of the invention, the filling fluid and the recovery fluid is configured to be delivered to the low pressure tank 300 through one common flow path 603 connected downstream of the composite valve 200, the first valve portion ( 230, the second valve part 220, the backflow prevention part 250, the first filter 240, the high pressure side pressure control valve 270, and the low pressure side pressure control valve 260 all of the common flow path 603. Since it is disposed upstream, there is a technical effect that can be formed into one composite valve.

In addition, according to an embodiment of the present invention, the first valve unit 230, the second valve unit 220, the backflow prevention unit 250, the first filter 240, the high pressure side pressure control valve 270 and Since all of the low pressure side pressure control valves 260 can be formed as one composite valve, it is not necessary to connect a plurality of valve devices by using components such as pipes, seams, pipe screws, etc. from the outside of the composite valve as in the prior art. Construction of the fluid filling device becomes very simple.

In addition, according to one embodiment of the present invention, in the maintenance of the fluid filling device, the malfunction of the valve system can be solved by replacing only the composite valve 200 located upstream of the common flow path 603, thereby simplifying maintenance. There is an advantage.

In addition, according to an embodiment of the present invention, the composite valve 200 is configured such that the short circuit of the first valve unit 230 and the second valve unit 220 is interlocked with each other and at the same time through one outlet Since it is connected to a common flow path, it is possible to prevent the first valve unit 230 and the second valve unit 220 from communicating with each other or blocking all of them due to a malfunction of the electronic device 210.

In addition, according to an embodiment of the present invention, since the first filter 240 is located upstream of the first valve part 230, impurities, etc., contained in the fluid before the supply fluid passes through the first valve part 230. Since it can be removed, it is possible to prevent the blockage or failure of the second valve unit 220 that operates in conjunction with the first valve unit 230 and the first valve unit 220 by impurities contained in the fluid.

Further, according to an embodiment of the present invention, the first valve unit 230, the second valve unit 220, the backflow prevention unit 250, the first filter 240, the high pressure side pressure control valve 270 and Since all of the low pressure side pressure control valves 260 are disposed upstream of the common flow path 603 in the form of a composite valve 200, fluid leakage in the downstream of the composite valve 200 is reduced, so that the pump efficiency of the pressurizing unit 400 is reduced. And the charging efficiency for the object to be charged is improved.

The foregoing description of the present invention is intended for illustration, and it will be understood by those skilled in the art that the present invention may be easily modified in other specific forms without changing the technical spirit or essential features of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is shown by the following claims rather than the above description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included in the scope of the present invention. do.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows typically the conventional fluid filling apparatus and the fluid valve composite valve apparatus.

2 is a view showing a fluid filling device and a fluid filling composite valve device according to an embodiment of the present invention.

* Explanation of symbols for the main parts of the drawings

100 fluid source 200 composite valve

210: electronic device 220: second valve portion

230: first valve portion 240: first filter

250: backflow prevention unit 260: low pressure side pressure control valve

270: high pressure side pressure control valve 300: low pressure tank

400: pressurization part 500: object to be charged

601: supply side charging flow path 603: common flow path

605: object side filling flow path 606: object side blow down flow path

810: low pressure pressure sensor 820: high pressure pressure sensor

900: second filter

Claims (7)

A fluid filling apparatus, A fluid source 100 for storing a fluid to be supplied to the object to be charged 500; Low pressure tank 300 for storing the fluid supplied from the fluid source 100, A pressurizing part 400 which pressurizes the fluid to a predetermined pressure downstream of the low pressure tank 300 and pumps the fluid to the object to be charged 500 through the object side filling passage 605; Connected between the fluid supply source 100 and the low pressure tank 300 and between the object-side filling flow path 605 and the low pressure tank 300 to be supplied from the fluid supply source 100 to the low pressure tank 300. A composite valve 200 for controlling the fluid flow and the fluid flow recovered to the low pressure tank 300 through the object side blow down flow path 606 connected to the object side fill flow path 605; One common flow path 603 for supplying the fluid supplied from the fluid supply source 100 to the low pressure tank 300 and simultaneously supplying the fluid recovered from the object side filling flow path 605 to the low pressure tank 300. Fluid filling device comprising a. The method of claim 1, The composite valve 200, Shorting the fluid flow between the first valve portion 230 for shorting the flow of fluid from the fluid source 100 to the low pressure tank 300 and the low pressure tank 300 from the object side blow down flow passage 606. It includes a second valve unit 220, When the first valve unit 230 communicates, the second valve unit 220 is blocked, and when the first valve unit 230 is blocked, the second valve unit 220 communicates with each other so as to communicate with each other. Fluid controlled device that is driven and controlled. The method of claim 2, The first valve unit 230 and the second valve unit 220 is formed integrally with the fluid filling device. The method according to claim 2 or 3, A backflow prevention part 250 interposed between the fluid supply source 100 and the first valve part 230 to prevent backflow of the fluid. Fluid filling device further comprising. The method according to claim 2 or 3, A first filter 240 interposed between the fluid supply source 100 and the first valve part 230 to remove impurities of the fluid Fluid filling device further comprising. The method according to any one of claims 1 to 3, Low pressure sensor 810 for measuring the fluid pressure on the suction side of the pressing unit 400, Low pressure side reflux flow path 608 connecting the common flow path 603 and the fluid supply source 100 and Low pressure side pressure control valve 260 for controlling the short circuit of the low pressure side reflux flow path (608) More, The low pressure side pressure control valve 260 communicates when the pressure detected by the low pressure pressure sensor 810 is equal to or higher than a set pressure, and the fluid supply source is provided through the common flow path 603 and the low pressure side reflux flow path 608. A fluid filling device for refluxing the fluid to (100). The method according to any one of claims 1 to 3, High pressure sensor 820 for measuring the fluid pressure on the discharge side of the pressing unit 400, High pressure side reflux flow path 609 connecting the common flow path 603 and the object-side blow down flow path 606 and High pressure side pressure control valve 270 for controlling the short circuit of the high pressure side reflux flow path (609) More, The high pressure side pressure control valve 270 communicates when the pressure detected by the high pressure pressure sensor 820 is equal to or higher than a set pressure, and the low pressure is passed through the object side blow down flow passage 606 and the common flow passage 603. Reflux the fluid into a tank (300).

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