KR20240014681A - Receptacle for refueling hydrogen - Google Patents

Abstract

A receptacle for hydrogen charging is provided that makes it easy to assemble the filter and has improved airtightness to prevent hydrogen leakage.
To this end, the receptacle for hydrogen charging according to the present invention has a first body to which a charging nozzle of a hydrogen charging station is coupled to one end, and one end is inserted into the internal flow path of the first body through the other end of the first body. A second body is coupled to the first body and the other end is coupled to the hydrogen tank of the vehicle, and a flange that contacts one end of the second body and seals between the inner circumferential surface of the first body and one end of the second body is on the outer surface. a sealing member protruding from the first body and having an internal flow path communicating with the internal flow path of the second body; a cylindrical guide part engaged with the sealing member and having a plurality of hydrogen inlets formed on a circumferential surface; A filter guide having a cap portion formed at one end of the guide portion to protrude radially outwardly from the guide portion, a first assembly protrusion that surrounds the circumference of the guide portion and one end of which is formed on the edge of the cap portion to face the guide portion, and the guide portion. It is assembled between the two, and the other end includes a second assembly protrusion formed on one edge of the sealing member to face the guide portion and a filter assembled between the guide portion.

Description

Receptacle for hydrogen charging {RECEPTACLE FOR REFUELING HYDROGEN}

The present invention relates to a receptacle for hydrogen charging, and more specifically, to a receptacle for hydrogen charging used to charge hydrogen into a hydrogen tank of a hydrogen fuel cell vehicle by connecting a charging nozzle of a hydrogen charging station.

In general, hydrogen fuel cell vehicles use electrical energy generated through a chemical reaction between oxygen and hydrogen in the stack as a power source. The hydrogen fuel cell vehicle has the advantage of being able to continuously generate power regardless of the capacity of the battery by supplying fuel and air from outside, which has the advantage of being highly efficient and emitting almost no pollutants. Recently, the technology of the hydrogen fuel cell vehicle has been developed. It's becoming more active.

The hydrogen fuel cell vehicle is equipped with one or more hydrogen tanks filled with high-pressure hydrogen gas. Additionally, a receptacle for hydrogen charging is installed in the hydrogen tank of the hydrogen fuel cell vehicle. A charging nozzle connected to a buffer tank of a hydrogen gas charging station can be connected to the receptacle to charge hydrogen into the hydrogen tank.

When charging hydrogen in the hydrogen tank of the hydrogen fuel cell vehicle, when the pressure of the hydrogen charged in the hydrogen tank reaches the buffer pressure, the check valve provided inside the receptacle is closed by the hydrogen pressure of the hydrogen tank, thereby releasing the hydrogen. The tank is fully charged.

Meanwhile, the inside of the receptacle is provided with a filter unit that filters out foreign substances from hydrogen supplied into the inside of the receptacle from the charging nozzle.

Republic of Korea Patent Publication No. 10-1907886 (October 17, 2018) (hereinafter referred to as 'prior art') discloses a 'receptacle for a hydrogen fuel cell vehicle' equipped with the filter unit.

In the prior art, the filter unit is composed of a sintered filter, a protector, a cap, and a boss. Here, the sintered filter is manufactured in a cylindrical shape by overlapping a plurality of wire meshes having different processes and filters the charged fuel. And, the protector is installed inside the sintered filter. And, the cap is coupled to the top of the sintered filter and the top of the protector. Then, the boss is coupled to the lower end of the sintered filter and the lower end of the protector, and a delivery passage is formed inside to deliver the filtered fuel to the valve unit.

However, in the prior art, since the sintered filter and the protector were formed as separate products, in the prior art, the sintered filter was coupled between the cap and the boss by welding the cap and the boss by a welding method such as laser welding. Fixed with boss. Alternatively, a first insertion groove is formed on the lower surface of the cap into which the upper end of the sintered filter and the upper end of the protector are inserted, and a second insertion groove is formed on the upper surface of the boss into which the lower end of the sintered filter and the lower end of the protector are inserted. was formed, and the sintered filter, the cap, and the boss were each fixed by adhesive using an adhesive such as epoxy.

As such, in the prior art, the sintered filter was assembled to the cap and the boss using the welding method or the adhesive method, so there was a problem in that the assembly time of the sintered filter took a long time.

Republic of Korea Patent Publication No. 10-1907886 (2018.10.17.)

The problem to be solved by the present invention is to provide a hydrogen charging receptacle that facilitates assembly of the filter and has improved airtightness to prevent hydrogen leakage.

The object of the present invention is not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

In order to achieve the above object, the receptacle for hydrogen charging according to the present invention is composed of a first body, a second body, a sealing member, a filter guide, and a filter. A charging nozzle of a hydrogen charging station is coupled to one end of the first body. One end of the second body is inserted into the internal flow path of the first body through the other end of the first body and coupled to the first body. The other end of the second body is coupled to the hydrogen tank of the vehicle. A flange is protruding from the outer peripheral surface of the sealing member. The flange contacts one end of the second body to seal between the inner peripheral surface of the first body and one end of the second body. An internal flow path communicating with the internal flow path of the first body and the internal flow path of the second body is formed in the sealing member. The filter guide has a guide portion and a cap portion. The guide portion is fastened to the sealing member. The guide portion is formed in a cylindrical shape. A plurality of hydrogen inlets are formed on the circumferential surface of the guide portion. The cap portion is formed at one end of the guide portion to protrude radially outward from the guide portion. The filter surrounds the guide portion. One end of the filter is assembled between the first assembly protrusion and the guide portion. The first assembly protrusion is formed on the edge of the cap portion to face the guide portion. The other end of the filter is assembled between the second assembly protrusion and the guide portion. The second assembly protrusion is formed on one edge of the sealing member to face the guide portion.

The filter guide may further have a fastening part. The fastening portion may be formed at the other end of the guide portion so as not to protrude radially outward from the guide portion. The fastening part may be inserted into the internal flow path of the sealing member through one end of the sealing member and fastened to the sealing member.

The internal flow path of the first body may be formed as a first internal flow path extending from one end to the other end of the first body. The internal flow path of the second body may be formed as a second internal flow path extending from one end to the other end of the second body. The internal flow path of the sealing member may be formed as a third internal flow path extending from one end to the other end of the sealing member. The third internal flow path may guide hydrogen flowing into the first internal flow path to the second internal flow path. The other end of the sealing member may be inserted into the second internal flow path through one end of the second body.

One outer edge of the filter may be formed in a chamfer shape. The other outer edge of the filter may be formed in a round shape.

The outer edge of the end of the fastening part may be formed in a chamfer shape.

The middle portion of one side of the flange may be formed in a chamfer shape. The inner stepped middle portion of the first body that contacts the middle portion of one surface of the flange may be formed in a chamfer shape. The middle portion of the other side of the flange may be formed in a chamfer shape. The middle portion of one end of the second body, which is in contact with the middle portion of the other side of the flange, may be formed in a chamfer shape.

One outer edge of the second body may be formed in a chamfer shape.

A valve member may be further disposed in the internal flow path of the second body. The valve member can prevent backflow of hydrogen. The valve member may be composed of a valve housing, an opening and closing member, and a stopper. The valve housing may be formed in a cylindrical shape. One end of the valve housing may be in contact with the other end of the sealing member. The inner space of the valve housing may communicate with the inner flow path of the sealing member. A plurality of hydrogen outlets may be formed on the outer peripheral surface of the valve housing. The opening and closing member may be disposed in the inner space of the valve housing. The opening and closing member may open and close the hydrogen outlet while being moved by a hydrogen pressure difference between the charging nozzle and the hydrogen tank. The stopper may be formed in a cylindrical shape. The stopper may be inserted into one end of the valve housing. The opening and closing member may be in contact with the stopper when closing the hydrogen outlet. A sealing groove may be formed at one end of the stopper. A sealing protrusion inserted into the sealing groove may be formed on the other end of the sealing member.

Specific details of other embodiments are included in the detailed description and drawings.

In the receptacle for hydrogen charging according to the present invention, one end of the filter is assembled between the guide part and a first assembly protrusion formed on the edge of the cap part of the filter guide to face the guide part of the filter guide, and the other end of the filter is one end of the sealing member. Since it is assembled between the guide part and a second assembly protrusion formed on the edge to face the guide part, there is an effect that the filter can be easily assembled to the filter guide and the sealing member.

In addition, the receptacle for hydrogen charging according to the present invention has the effect of improving the assembly of each component because the connection portion or contact portion of each component is formed in a chamfer shape or a round shape.

In addition, the middle portion of one side of the flange formed on the sealing member is formed in a chamfer shape, the middle portion of the internal step in contact with the middle portion of one side of the flange is formed in a chamfer shape, and the middle portion of the other side of the flange is formed in a chamfer shape. Since the middle portion of one end of the second body, which is in contact with the middle portion of the other side of the flange, is formed in a chamfer shape, airtightness to prevent hydrogen leakage is improved.

In addition, in the receptacle for hydrogen charging according to the present invention, a sealing groove is formed in the stopper of the valve member, and a sealing protrusion inserted into the sealing groove is formed in the sealing member, so that airtightness to prevent hydrogen leakage is improved. there is.

The effects of the present invention are not limited to the effects mentioned above, and other effects not mentioned will be clearly understood by those skilled in the art from the description of the claims.

1 is a perspective view showing a receptacle for hydrogen charging according to an embodiment of the present invention;
Figure 2 is a side cross-sectional view of Figure 1;
Figure 3 is a perspective view showing the sealing member, filter guide, and filter shown in Figure 2;
Figure 4 is an exploded perspective view of Figure 3;
Figure 5 is a side cross-sectional view of Figure 3;
Figure 6 is a diagram showing another embodiment of Figure 5;
Figure 7 is an enlarged view of part A shown in Figure 5;
Figure 8 is an enlarged view of part B shown in Figure 5;
Figure 9 is an enlarged view of part C shown in Figure 5;
Figure 10 is an enlarged view of part D shown in Figure 2;
Figure 11 is an enlarged view of portion E shown in Figure 2.

Hereinafter, a receptacle for hydrogen charging according to an embodiment of the present invention will be described with reference to the drawings.

In all configurations described below, terms related to direction, such as top, bottom, top, bottom, top and bottom, refer to the directions shown in the drawings. Therefore, the top may have the same meaning as one end, the bottom may have the same meaning as the other end, the upper side may have the same meaning as one side, the lower side may have the same meaning as the other side, and the upper end may have the same meaning as one end. The lower end may have the same meaning as the other end.

Figure 1 is a perspective view showing a receptacle for hydrogen charging according to an embodiment of the present invention, and Figure 2 is a side cross-sectional view of Figure 1.

1 and 2, the receptacle 1 for hydrogen charging according to an embodiment of the present invention includes a first body 100, a second body 200, a sealing member 300, and a filter guide 400. , may include a filter 500 and a valve member 600.

The first body 100 and the second body 200 may form the external shape of the receptacle 1. The first body 100 may form the upper exterior shape of the receptacle 1, and the second body 200 may have its upper end coupled to the lower end of the first body 100 to form the lower exterior shape of the receptacle 1. can be formed.

The lower end of the first body 100 may be formed as a large diameter portion with a larger diameter than the remaining portion of the first body 100, and the inside of the first body 100 may have a step 170 at the top of the large diameter portion (FIG. 10). reference) can be formed. The upper end of the second body 200 may be inserted into the large diameter portion, and the upper end of the second body 200 may be disposed to face the step 170 . Screw threads are formed on the inner peripheral surface of the large diameter part and the outer peripheral surface of the upper end of the second body 200 inserted into the large diameter part, so that the lower end of the first body 100 and the upper end of the second body 200 are screwed together. It can be.

The upper end of the first body 100 may be coupled to a charging nozzle of a hydrogen charging station, and the lower end of the second body 200 may be coupled to a hydrogen tank of a hydrogen fuel cell vehicle. Since the first body 100 and the second body 200 are coupled to each other, the hydrogen flowing into the inside of the receptacle 1 through the upper opening of the first body 100 from the charging nozzle of the hydrogen charging station is connected to the second body 100. The hydrogen tank can be charged through the bottom opening of the body 200.

The first body 100 may be formed in a substantially cylindrical shape with open upper and lower surfaces. An internal flow path 105 through which the charged fuel moves may be formed inside the first body 100. The internal passage 105 of the first body 100 may be formed as a first internal passage 105 extending from the top to the bottom of the first body 100. The first internal flow passage 105 may refer to the internal space of the first body 100.

Here, the charging nozzle of the hydrogen charging station may be coupled to the opening in the upper surface of the first body 100 to form an inlet through which hydrogen flows. That is, the upper opening of the first internal passage 105 may be the inlet through which hydrogen flows from the charging nozzle of the hydrogen charging station.

On the inner peripheral surface of the inlet, a first ring 110 and a second ring 120 that prevent fuel leakage when the charging nozzle is coupled may be installed at a certain distance up and down.

Here, the first ring 110 may function to seal the first charging nozzle for charging fuel at a pressure of about 5 bar to 100 bar, that is, low pressure, and the second ring 120 may function at a pressure of about 100 bar to 700 bar. It can function to seal the second charging nozzle, which charges fuel at a high pressure.

The first charging nozzle may be formed with a larger diameter than the second charging nozzle, and the second charging nozzle may be formed with a smaller diameter than the first charging nozzle.

A partition protrusion 108 corresponding to the diameter of the second charging nozzle may be formed on the inner peripheral surface of the upper end of the first body 100. A first installation groove 106 in which the first ring 110 is installed may be formed on the inner peripheral surface of the first body 100 disposed on the upper side of the partition protrusion 108, and a first installation groove 106 may be formed on the lower part of the partition protrusion 108. A second installation groove 107 in which the 2 ring 120 is installed may be formed. The partition protrusion 108 may partition the first installation groove 106 and the second installation groove 107.

The diameter of the first installation groove 106 may be formed to be larger than the diameter of the second installation groove 107.

In the second installation groove 107, the first backup ring 130 may be installed on the upper side of the second ring 120, and the second backup ring 140 may be installed on the lower side of the second ring 120. You can.

When charging high-pressure hydrogen of about 100 bar to 700 bar, the first backup ring 130 can function to minimize the movement and deformation of the second ring 120 being pushed upward by the charging pressure of hydrogen, and the second backup ring 130 (140) may function to minimize movement and deformation of the second ring 120 being pushed downward due to the charging pressure of hydrogen.

The first backup ring 130 and the second backup ring 140 may be made of a synthetic resin material with excellent low-temperature airtightness, tensile strength, and elongation, such as thermoplastic polyurethane (TPU).

The first ring 110 and the second ring 120 may have a circular cross-section, and the first backup ring 130 and the second backup ring 140 may have a square cross-section.

The first ring 110 and the second ring 120 completely block hydrogen leakage when charging hydrogen, improve airtightness, and prevent safety accidents due to hydrogen leakage.

The second body 200 may be formed in a substantially cylindrical shape with open upper and lower surfaces. An internal flow path 205 through which the charged fuel moves may be formed inside the second body 200. The internal passage 205 may be formed as a second internal passage 205 extending from the top to the bottom of the second body 200. The second internal flow passage 205 may refer to the internal space of the second body 200.

Here, the hydrogen tank may be coupled to the opening in the lower surface of the second body 200 to form an outlet through which hydrogen flows out. That is, the bottom opening of the second internal flow path 205 may be the outlet through which hydrogen flows out into the hydrogen tank.

The upper end of the second body 200 is formed to have a smaller diameter than the diameter of the lower end of the first body 100 and can be inserted into the lower end of the first body 100 and coupled to the first body 100. That is, the upper end of the second body 200 may be inserted into the first internal passage 105 through the lower end of the first body 100 and coupled to the first body 100.

The sealing member 300 may be coupled to the lower end of the filter 500 and formed integrally with the filter 500.

The sealing member 300 may be disposed in the first internal flow passage 105 of the first body 100. The sealing member 300 may be formed in a cylindrical shape. An internal flow path 305 (see FIGS. 4 and 5) may be formed in the sealing member 300. The internal flow path 305 may be formed as a third internal flow path 305 extending from the top of the sealing member 300 to the bottom of the sealing member 300. The third internal flow path 305 may refer to the internal space of the sealing member 300.

The internal passage 305 of the sealing member 300 may communicate with the internal passage 105 of the first body 100 and the internal passage 205 of the second body 200. That is, the third internal passage 305 may be in communication with the first internal passage 105 and the second internal passage 205.

Hydrogen flowing into the first internal flow path 105 of the first body 100 from the charging nozzle may pass through the filter 500, filter out foreign substances, and flow into the interior of the filter guide 400, and the sealing member ( The third internal passage 305 of the second body 200 may guide the hydrogen filtered by the filter 500 and introduced into the filter guide 400 to the second internal passage 205 of the second body 200.

A flange 310 may be formed to protrude on the outer peripheral surface of the sealing member 300. The flange 310 may be formed continuously in the circumferential direction of the sealing member 300 and may be formed to protrude in the radial direction of the sealing member 300. The flange 310 may contact the top of the second body 200 to seal between the inner peripheral surface of the first body 100 and the top of the second body 200.

A step 170 (see FIG. 10 ) may be formed below the filter 500 on the inner peripheral surface of the lower end of the first body 100 . The flange 310 of the sealing member 300 may be inserted and placed between the step 170 of the first body 100 and the top of the second body 200. The upper surface of the flange 310 of the sealing member 300 is in contact with the step 170, and the lower surface of the flange 310 of the sealing member 300 is in contact with the top of the second body 200, so that the sealing member 300 The flange 310 may seal between the inner peripheral surface of the first body 100 and the top of the second body 200.

The lower end of the sealing member 300 may be inserted into the second internal flow passage 205 of the second body 200 through the upper end of the second body 200.

The lower end of the filter guide 400 may be coupled to the upper end of the sealing member 300 and protrude upward from the sealing member 300. A portion of the outer peripheral surface of the filter guide 400 may be surrounded by the filter 500. The filter guide 400 is capable of supporting the filter 500, and allows hydrogen filtered while passing through the filter 500 and flowing into the inside of the filter guide 400 to flow through the third internal flow path 305 of the sealing member 300. ) can be guided to.

The filter 500 may filter hydrogen flowing into the first internal flow path 105 of the first body 100 from the charging nozzle. Hydrogen flowing into the first internal flow passage 105 of the first body 100 may be filtered while flowing from the outside of the filter 500 toward the inside of the filter 500.

The filter 500 may be installed inside the first body 100. The filter 500 may be disposed in the first internal flow path 105. The filter 500 can remove foreign substances from hydrogen flowing into the first body 100.

The filter 500 is manufactured in a cylindrical shape by overlapping a plurality of wire meshes with different pore diameters, and may be a sintered filter that filters the charged fuel.

For example, the filter 500 overlaps one main mesh with a pore diameter of about 10㎛ and two protective meshes with a pore diameter of about 0.1 to 10 mm and a thickness of about 1 to 2 mm, so that the filter 500 can maintain a temperature of about 1000 to 1200°C. By compression sintering at high temperature, it can be formed into a single sintered mesh filter with a uniform pore diameter of about 10㎛ and a thickness of about 1.3mm.

In this way, the filter 500 manufactured by overlapping a plurality of wire meshes and compressing and sintering them at high temperature may have excellent porosity and filtration efficiency, heat resistance and corrosion resistance, and excellent strength and durability.

Of course, the filter 500 may be changed to use a sintered powder filter that is easy to manufacture, simple, and inexpensive instead of a sintered mesh filter.

However, in the sintered powder filter, chemical bonding occurs between powders due to the manufacturing process mechanism, making it difficult to uniformly create the desired pore size, and since the powders are in a lumped form, there is a problem in that some of the aggregated powders fall off due to the charging pressure of the fuel when used. there is.

On the other hand, sintered mesh filters do not break or break due to their characteristics, and can maintain overall rigidity even if partial deformation occurs.

Therefore, it is preferable that the filter 500 is a sintered mesh filter manufactured by overlapping a plurality of wire meshes manufactured with different preset pore diameters and compressing and sintering them at a high temperature. Through this, the filter 500 has less pore diameter distribution and hydrogen The rigidity of the filter according to the charging environment can be secured.

Additionally, it should be noted that the filter 500 can vary the number of meshes and the pore diameter and thickness of each mesh depending on the characteristics and pressure of the fuel being charged.

The valve member 600 may be installed in the second internal passage 205 of the second body 200. The valve member 600 can prevent backflow of hydrogen introduced into the second body 200.

The valve member 600 may include a valve housing 610, an opening and closing member 620, and a stopper 630.

The valve housing 610 may be formed in a cylindrical shape. The upper end of the valve housing 610 may be in contact with the lower end of the sealing member 300. The internal space of the valve housing 610 may be in communication with the internal flow path 305 of the sealing member 300. Accordingly, hydrogen flowing out of the third internal flow passage 305 of the sealing member 300 may flow into the inside of the valve housing 610.

A plurality of hydrogen outlets 615 may be formed on the outer peripheral surface of the valve housing 610. Hydrogen flowing into the inside of the valve housing 610 flows into the second internal flow path 205 of the second body 200 through a plurality of hydrogen outlets 615 and then through the bottom opening of the second body 200. It can be charged with the vehicle's hydrogen tank.

The opening and closing member 620 may be disposed in the inner space of the valve housing 610. The opening and closing member 620 may open and close the hydrogen outlet 615 while moving up and down due to the hydrogen pressure difference between the charging nozzle and the hydrogen tank. A coil spring (not shown) may be disposed within the valve housing 610 to elastically support the opening and closing member 620 in the vertical direction. The opening and closing member 620 is formed in a shape with an open bottom, and the upper end of the coil spring is inserted into the opening and closing member 620 through the open lower end of the opening and closing member 620 to support the opening and closing member 620. The lower end of the coil spring may be supported on the inner lower surface of the valve housing 610.

The stopper 630 may be formed in a cylindrical shape. The stopper 630 may be inserted into the upper part of the valve housing 610. The opening and closing member 620 may be in contact with the stopper 630 when closing the hydrogen outlet 615.

The valve housing 610 and the opening and closing member 620 may be made of steel, and the stopper 630 may be made of rubber. Therefore, the stopper 630 can prevent noise by preventing the opening and closing member 620 from contacting the valve housing 610.

The bottom of the valve housing 610 is open, and the hydrogen pressure in the hydrogen tank of the vehicle flowing into the second internal flow path 205 of the second body 200 is transmitted through the bottom opening of the valve housing 610 to the valve housing ( 610) may flow into the interior.

The opening and closing member 620 normally rises until it contacts the stopper 630 by the hydrogen pressure in the vehicle's hydrogen tank flowing into the inside of the valve housing 610 through the bottom opening of the valve housing 610. It can operate to close the hydrogen outlet 615, and when hydrogen is injected from the charging nozzle, the hydrogen pressure in the stopper 630 rises higher than the hydrogen pressure in the hydrogen tank of the vehicle, and it operates downward to close the hydrogen outlet 615. It can be opened.

FIG. 3 is a perspective view showing the sealing member, filter guide, and filter shown in FIG. 2, FIG. 4 is an exploded perspective view of FIG. 3, and FIG. 5 is a side cross-sectional view of FIG. 3.

3 to 5, the sealing member 300, filter guide 400, and filter 500 may be combined with each other to form filter assemblies 300, 400, and 500. The filter assemblies 300, 400, and 500 may be made of stainless steel containing 7 to 15% by weight of nickel (Ni) to combat hydrogen embrittlement.

The filter guide 400 may have a guide portion 410, a cap portion 420, and a fastening portion 430.

The guide portion 410 may be formed in a cylindrical shape. The guide unit 410 may penetrate the filter 500. That is, the filter 500 may surround the guide portion 410. The guide unit 410 is disposed inside the filter 500 and may function to prevent deformation of the filter 500 under high pressure conditions.

The guide portion 410 may be formed to have a thickness of approximately 1 mm. A plurality of hydrogen inlets 415 may be formed on the circumferential surface of the guide unit 410 through which hydrogen filtered while passing through the filter 500 flows into the interior of the guide unit 410. A plurality of hydrogen inlets 415 may be arranged to be spaced apart from each other in the circumferential direction of the guide portion 410. The plurality of hydrogen inlets 415 may be formed to be long in the vertical direction. The guide unit 410 can smoothly guide hydrogen flowing into the guide unit 410 through the plurality of hydrogen inlets 415 to the third internal flow path 305 of the sealing member 300.

The lower end of the guide portion 410 may be fastened to the sealing member 300. The fastening part 430 may be formed at the bottom of the guide part 410 and fastened to the sealing member 300.

The fastening portion 430 may be formed at the bottom of the guide portion 410 so as not to protrude radially outward from the guide portion 410 . That is, the fastening part 430 may be formed to have a smaller diameter than the guide part 410.

The fastening part 430 may be inserted into the internal passage 305 of the sealing member 300 through the upper end of the sealing member 300 and fastened to the sealing member 300. For this purpose, a screw thread may be formed on the outer peripheral surface of the fastening part 430, and a screw thread that is fastened to the screw thread formed on the outer peripheral surface of the fastening part 430 may be formed on the inner peripheral surface of the upper end of the sealing member 300. The operator can fasten the fastening part 430 and the sealing member 300 by inserting the fastening part 430 into the upper part of the sealing member 300 and rotating it.

The cap portion 420 may be formed at the top of the guide portion 410 to protrude radially outward from the guide portion 410. That is, the cap portion 420 may be formed to have a larger diameter than the guide portion 410.

The cap portion 420 functions as a guide to guide the hydrogen flowing into the first internal passage 105 of the first body 100 to the outside of the filter 500, thereby preventing the hydrogen flowing into the first internal passage 105 from flowing into the first body 100. It can be filtered by moving from the outside to the inside of the filter 500.

The cap portion 420 may be formed in a shape in which the central portion is convex upward and slopes downward toward the outside in order to minimize fluid resistance when moving hydrogen. Of course, the shape of the cap portion 420 is not necessarily limited to this, and may be changed to various shapes such as a hemispherical shape convex upward or a semi-elliptical cross section.

As such, the present invention applies a filter 500 in which a plurality of wire meshes are overlapped and compressed and sintered at a high temperature, the guide part 410 is placed inside the filter 500, and the guide part is placed on the top of the filter 500. By coupling the cap portion 420 formed at the top of 410 and coupling the sealing member 300 to the lower part of the filter 500, damage to the filter 500 due to hydrogen pressure can be prevented when charging hydrogen. .

Accordingly, the present invention completely blocks foreign substances from entering the interior of the receptacle 1, thereby preventing defects in each component due to foreign substances.

Figure 6 is a diagram showing another embodiment of Figure 5. Here, the same reference numerals are assigned to the same components as the above-described embodiment shown in FIG. 5, and a detailed description thereof will be omitted, and only the differences will be described.

Referring to Figure 6, it can be seen that it is different from the above-described embodiment shown in Figure 5. That is, in the above-described embodiment shown in FIG. 5, a plurality of hydrogen inlets 415 formed in the guide part 410 are formed to be long up and down, but in the present embodiment shown in FIG. 6, a plurality of hydrogen inlets 415 formed in the guide part 410 are formed. Two hydrogen inlets 416 are formed in a circular shape. Here, the diameter of the plurality of hydrogen inlets 416 may be 5 mm.

Figure 7 is an enlarged view of part A shown in Figure 5, and Figure 8 is an enlarged view of part B shown in Figure 5.

Referring to Figures 5, 7, and 8, a first assembly protrusion 422 may be formed on the edge of the cap portion 420. The first assembly protrusion 422 may be formed on the lower side of the edge of the cap portion 420 to face the guide portion 410. The top of the filter 500 may be assembled between the first assembly protrusion 422 and the guide portion 410.

Additionally, a second assembly protrusion 302 may be formed on the upper edge of the sealing member 300. The second assembly protrusion 302 may be formed on the upper edge of the sealing member to face the guide portion 410. The lower end of the filter 500 may be assembled between the second assembly protrusion 302 and the guide portion 410.

The first assembly protrusion 422 and the second assembly protrusion 302 may have a thickness and shape that can be collapsed after the filter 500 is assembled.

In this way, the filter 500 is not welded to the filter guide 400 and the sealing member 300, but is assembled through the first assembly protrusion 422 and the second assembly protrusion 302, so the filter 500 is not welded to the filter guide 400 and the sealing member 300. It can be easily assembled to the guide 400 and the sealing member 300.

Additionally, the upper outer edge 510 of the filter 500 may be formed in a chamfer shape. Here, the chamfer shape may be an inclined surface. The lower outer edge 520 of the filter 500 may be formed in a round shape. Here, the round shape may be a curved surface that is convex outward. Through this, the filter 500 can be easily assembled to the filter guide 400 and the sealing member 300.

Figure 9 is an enlarged view of part C shown in Figure 5.

Referring to FIGS. 5 and 9 , the outer edge 435 of the end of the fastening portion 430 of the filter guide 400 may be formed in a chamfer shape. Through this, the fastening portion 430 of the filter guide 400 can be easily inserted and assembled into the upper end of the third internal passage 305 of the sealing member 300.

Figure 10 is an enlarged view of portion D shown in Figure 2.

Referring to FIGS. 2 and 10, the upper middle portion 318 of the flange 310 of the sealing member 300 may be formed in a chamfer shape, and the upper middle portion 318 of the flange 310 may be in contact with the upper middle portion 318 of the sealing member 300. 1 The middle portion 180 of the internal step 170 of the body 100 may be formed in a chamfer shape. In addition, the lower middle portion 319 of the flange 310 may be formed in a chamfer shape, and the upper middle portion 280 of the second body 200, which is in contact with the lower middle portion 319 of the flange 310, may be formed in a chamfer shape. It may be formed in a chamfer shape. Through this, airtightness to prevent hydrogen leakage can be improved.

Additionally, the upper outer edge 290 of the second body 200 may be formed in a chamfer shape. Through this, the upper end of the second body 200 can be easily inserted into the interior of the first body 100 through the lower end of the first body 100 and assembled.

Figure 11 is an enlarged view of portion E shown in Figure 2.

2 and 11, a sealing groove 635 may be formed at the top of the stopper 630 of the valve member 600, and a sealing groove 635 may be formed at the bottom of the sealing member 300. Protrusions 350 may be formed. The sealing groove 635 may be formed continuously in the circumferential direction of the stopper 630, and the sealing protrusion 350 may be formed continuously in the circumferential direction of the sealing member 350. Through this, airtightness to prevent hydrogen leakage can be improved.

The assembly process of the hydrogen charging receptacle 1 according to the embodiment of the present invention configured as described above will be described as follows. However, the assembly process here is only an example, and the assembly order of some components may be changed.

First, the worker installs the first ring 110 in the first installation groove 106 formed on the inner peripheral surface of the upper end of the first body 100, the first backup ring 130 in the second installation groove 107, Install the second ring 120 and the second backup ring 140.

Afterwards, the operator passes the guide part 410 of the filter guide 400 through the circular filter 500, wraps the outer peripheral surface of the guide part 410 with the filter 500, and then connects the fastening part of the filter guide 400. (430) is inserted into the upper end of the sealing member 300 and rotated so that the threads formed on the outer peripheral surface of the fastening part 430 are coupled to the threads formed on the upper inner peripheral surface of the sealing member 300, so that the sealing member 300, The filter assemblies 300, 400, and 500 in which the filter guide 400 and the filter 500 are coupled to each other are assembled.

The filter assemblies 300, 400, and 500 are moved upward from the lower part of the first body 100 and inserted into the first internal flow path 105.

Thereafter, the operator inserts the valve member 600 into the second internal passage 205 of the second body 200 and installs the valve member 600 in the second internal passage 205.

Thereafter, the upper part of the second body 200 is inserted into the first internal flow passage 105 through the lower opening of the first body 100, and the first body 100 and the second body 200 are coupled to each other, Complete the assembly of the receptacle (1).

The operation of the receptacle 1 according to the embodiment of the present invention configured as above will be described as follows.

In order to charge hydrogen in the hydrogen tank of a hydrogen fuel cell vehicle, when the charging nozzle of the hydrogen charging station is connected to the upper part of the first body 100 to start charging hydrogen, the first internal passage 105 of the first body 100 ) The hydrogen flowing into the inside is filtered through the filter 500, and then passes through the plurality of hydrogen inlets 415 formed in the guide part 410 of the filter guide 400 to the guide part 410 of the filter guide 400. After flowing inside, it flows into the third internal flow path 305 of the sealing member 300.

Hydrogen flowing into the third internal flow path 305 of the sealing member 300 flows into the inside of the stopper 630 of the valve member 600 and presses the opening and closing member 620 of the valve member 600 downward. Accordingly, the opening and closing member 620 moves downward to open the plurality of hydrogen outlets 615 formed in the valve housing 610.

In this way, when the opening and closing member 620 opens the plurality of hydrogen outlets 615 of the valve housing 610, the hydrogen in the stopper 630 moves downward and flows into the interior of the valve housing 610, and then flows into the plurality of hydrogen outlets 615 of the valve housing 610. After being moved to the second internal flow path 205 of the second body 200 through the two hydrogen outlets 615, it is moved to the hydrogen tank through the open bottom of the second body 200 and charged into the hydrogen tank. do.

When the hydrogen tank is filled with hydrogen, the opening and closing member 620 is moved upward by the hydrogen pressure of the hydrogen tank flowing into the inside of the valve housing 610 through the bottom opening of the valve housing 610, and the opening and closing member 620 is moved upward. The upper end of (620) is inserted into the interior of the stopper 630 through the lower end of the stopper 630 and contacts the lower inner peripheral surface of the stopper 630 to close the plurality of hydrogen outlets 615, thereby charging hydrogen into the hydrogen tank. will be completed.

As described above, in the hydrogen charging receptacle 1 according to an embodiment of the present invention, the top of the filter 500 is attached to the edge of the cap portion 420 of the filter guide 400 and the guide portion 410 of the filter guide 400. It is assembled between the first assembly protrusion 422 formed to face and the guide part 410, and the lower end of the filter 500 is formed to face the guide part 410 at the upper edge of the sealing member 300. Since it is assembled between the protrusion 302 and the guide portion 410, the filter 500 can be easily assembled to the filter guide 400 and the sealing member 300.

In addition, in the receptacle 1 for hydrogen charging according to an embodiment of the present invention, the connection portion or contact portion of each component is formed in a chamfer shape or a round shape, so the assembly of each component can be improved. there is.

In addition, in the hydrogen charging receptacle 1 according to an embodiment of the present invention, the upper middle portion 318 of the flange 310 formed on the sealing member 300 is formed in a chamfer shape, and the upper middle portion 318 of the flange 310 is formed in a chamfer shape. The middle portion 180 of the internal step 170 of the first body 100 in contact with the portion 318 is formed in a chamfer shape, and the middle portion 319 of the lower surface of the flange 310 is formed in a chamfer shape, and the flange 310 is formed in a chamfer shape. Since the upper middle part 280 of the second body 200, which is in contact with the lower middle part 319 of 310, is formed in a chamfer shape, airtightness to prevent hydrogen leakage can be improved.

In addition, the receptacle 1 for hydrogen charging according to an embodiment of the present invention has a sealing groove 635 formed in the stopper 630 of the valve member 600, and the sealing member 300 has a sealing groove 635. Since the inserted sealing protrusion 350 is formed, airtightness to prevent hydrogen leakage can be improved.

Meanwhile, in the above embodiment, the present invention has been described limited to the hydrogen charging receptacle 1 used in a hydrogen fuel cell vehicle, but the present invention is not necessarily limited thereto and can be used to charge high-pressure gas fuel such as LPG. It can also be used as a receptacle (1) installed in the fuel tank of various gas vehicles.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention.

1: Receptacle for hydrogen charging 100: First body
105: First internal passage 180: Internal step middle portion of the first body
200: second body 205: second internal flow path
280: One middle portion of the second body 290: One outer edge of the second body
300: Sealing member 302: Second assembly protrusion
305: Third internal passage 310: Flange
318: Middle portion of one side of flange 319: Middle portion of other side of flange
350: Sealing protrusion 400: Filter guide
410: Guide part 415: Hydrogen inlet
420: Cap portion 422: First assembly protrusion
430: fastening part 435: outer edge of the end of the fastening part
500: Filter 510: One outer edge of the filter
520: Outside edge of the other end of the filter 600: Valve member
610: valve housing 615: hydrogen outlet
620: Opening and closing member 630: Stopper
635: Sealed groove

Claims (8)

A first body to which the charging nozzle of the hydrogen charging station is coupled to one end;
a second body, one end of which is inserted into the internal flow path of the first body through the other end of the first body and coupled to the first body, and the other end of which is coupled to a hydrogen tank of the vehicle;
A flange that contacts one end of the second body and seals between the inner circumferential surface of the first body and one end of the second body is formed protruding on the outer circumferential surface, and includes an inner flow path of the first body and an inner flow path of the second body. A sealing member formed with a communicating internal flow path;
a filter guide having a cylindrical guide part fastened to the sealing member and having a plurality of hydrogen inlets formed on a circumferential surface, and a cap part formed at one end of the guide part to protrude radially outward from the guide part; and
It surrounds the circumference of the guide part, one end is assembled between the guide part and a first assembly protrusion formed on the edge of the cap part to face the guide part, and the other end is formed on one edge of the sealing member to face the guide part. A receptacle for hydrogen charging including a filter assembled between 2 assembly protrusions and the guide portion. In claim 1,
The filter guide is formed at the other end of the guide part so as not to protrude radially outward than the guide part, and further has a fastening part that is inserted into the internal flow path of the sealing member through one end of the sealing member and is fastened to the sealing member. Receptacle for charging. In claim 1,
The internal flow path of the first body is formed as a first internal flow path extending from one end to the other end of the first body,
The internal flow path of the second body is formed as a second internal flow path extending from one end to the other end of the second body,
The internal flow path of the sealing member is formed as a third internal flow path extending from one end of the sealing member to the other end to guide hydrogen flowing into the first internal flow path to the second internal flow path, and the other end of the sealing member is A receptacle for hydrogen charging inserted into the second internal flow path through one end of the second body. In claim 1,
One outer edge of the filter is formed in a chamfer shape,
A receptacle for hydrogen charging in which the other outer edge of the filter is formed in a round shape. In claim 2,
The hydrogen charging receptacle wherein the outer edge of the end of the fastening portion is formed in a chamfer shape. In claim 1,
The middle portion of one side of the flange is formed in a chamfer shape, and the inner step middle portion of the first body that contacts the middle portion of one side of the flange is formed in a chamfer shape,
A receptacle for hydrogen charging wherein the middle portion of the other surface of the flange is formed in a chamfer shape, and the middle portion of one end of the second body, which is in contact with the middle portion of the other surface of the flange, is formed in a chamfer shape. In claim 1,
A receptacle for hydrogen charging in which one outer edge of the second body is formed in a chamfer shape. In claim 1,
It further includes a valve member disposed in the internal flow path of the second body to prevent backflow of hydrogen,
The valve member is,
A cylindrical valve housing with one end in contact with the other end of the sealing member, the internal flow path and the internal space of the sealing member being in communication, and a plurality of hydrogen outlets formed on the outer circumferential surface;
An opening and closing member disposed in the inner space of the valve housing and moving by a hydrogen pressure difference between the charging nozzle and the hydrogen tank to open and close the hydrogen outlet;
It includes a cylindrical stopper inserted into one end of the valve housing and contacted when the opening and closing member closes the hydrogen outlet,
A sealing groove is formed at one end of the stopper,
A receptacle for hydrogen charging in which a sealing protrusion inserted into the sealing groove is formed at the other end of the sealing member.

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