High pressure gas regulator

Abstract

The present invention provides a high pressure gas regulator comprising: a body (10); a cover (20) coupled to the upper part of a body portion (11) of the body; a cap (30) of which the outer surface part is coupled to the lower surface part of the body portion (11); an adjustment spring (41) positioned in a receiving space of the cover (20); a movable plate (45) of which the upper surface part is in contact with the lower end part of the adjustment spring (41) and which is positioned on the upper surface part of the body portion (11); a guide body (51) of which the outer surface part is coupled to the inner surface part of a vertical hole (16); a guide (50) protruding vertically downward from the lower surface part of the guide body (51) and having a sheet (54) having a curved contact surface (55) formed along the lower inner surface part thereof; a valve spring (60) placed on a cap (32); a stem body (71); a support flange (73) protruding in an annular shape from the outer surface of a central part of the stem body (71) and of which the lower surface part is in close contact with the upper end part of the valve spring (60); and a movable stem (70) having an inclined surface (75) formed on the outer surface part thereof and having a disk ring (74) made of a synthetic resin material which is coupled to the upper surface part of the support flange (73).

Description

high pressure gas regulator

[0001] The present invention relates to a regulator that reduces the pressure of high-pressure gas and discharges it, and more specifically, to a high-pressure gas regulator that can ensure very stable operation even when repeatedly opened and closed for a long time, can arbitrarily control the amount of gas discharged and the state of the discharge, and can further adjust the pressure state of the discharged gas in various ways or maintain the state of the gas discharged more uniformly.

[0002] Recently, interest in natural gas and hydrogen gas has been growing as a means of addressing environmental pollution caused by the excessive use of fossil fuels. Unlike gasoline and kerosene, which are derived from fossil fuels, gas is a gas. When used as fuel, it must be compressed to high pressure and then injected into ship or automobile engines or stacks. A regulator is used to reduce the pressure to an appropriate level.

[0003] A typical regulator, as shown in Fig. 9, comprises a valve body (18) provided with an inlet (32) and an outlet (36), a cover (12) that seals the upper portion of the valve body (18) and is provided with a control spring and a diaphragm (46), and a stem (91) that discharges a certain amount of gas by opening and closing the passage through the interaction of the control spring and the valve spring while diverting some of the gas to the chamber (34).

[0004] That is, when high-pressure gas flows in through the inlet (32) while the flow path is open, some of the high-pressure gas moves along the open flow path and some of it fills the chamber (34) space, causing the control spring and valve spring to interact and maintaining the flow path opening width constant by the stem (91). Accordingly, gas decompressed to a certain pressure is discharged to the outlet (32) and supplied to the engine or stack.

[0005] However, most conventional regulators have a disc formed as an integral part of the outer surface of the stem, and this disc is used to open and close the flow path. However, when the disc is formed as an integral part of the stem made of metal in this way and used for a long time, there is a problem that the sealing power of the disc is reduced. In addition, most of the discs used in regulators are structured to open the flow path with a single inclined surface, and in this case, there was a problem that it was impossible to appropriately control the gas discharge amount itself depending on the usage environment.

[0006] The present invention has been proposed to improve the problems of the prior art, and the purpose of the present invention is to provide a regulator that not only has high durability and ensures stable operation for a long time, but also can stably supply gas by appropriately adjusting the amount and pressure of gas according to the usage environment.

[0007] In order to achieve this purpose, the present invention comprises: a body (10) having a body (11), an inlet (12) formed on one side of the body (11), an inlet passage (13) communicated with the inlet (12) and having the other side extending into the interior of the body (11), an outlet (14) formed on the other side of the body (11), an outlet passage (15) communicated with the outlet (14) and having one side extending into the interior of the body (11), and a vertical hole (16) formed in the center of the body (11) and having a lower side communicated with one side of the inlet passage (13) and an upper side communicated with one side of the outlet passage (15); a cover (20) having a receiving space of a predetermined size formed therein and coupled to the upper side of the body (11); A cap body (31) having an outer surface portion joined to a lower surface portion of a body body (11) and sealing a lower portion of a vertical hole (16), a mounting groove (32) formed with a certain depth in a central portion of the cap body (31), and a second chamber (33) formed with a certain depth in the central portion of the mounting groove (32) is provided; a control spring (41) positioned in a receiving space of a cover (20), a movable plate (45) positioned on an upper surface portion of the body body (11) and having an upper surface portion in contact with a lower portion of the control spring (41); A guide (50) having a guide body (51) whose outer surface is joined to the inner surface of a vertical hole (16), a connecting path (52) formed in the center of the guide body (51), a joining flange (53) formed along the lower edge of the guide body (51) and whose upper surface is in close contact with the lower surface of the vertical hole (16), a seat (54) protruding vertically downward from the lower surface of the guide body (51) and forming a curved contact surface (55) along the lower inner surface; a valve spring (60) whose lower surface is in close contact with and placed on the lower surface of a mounting groove (32);The outer surface portion is inserted into the connecting passage (52) with a certain distance from the inner surface portion of the connecting passage (52), and the upper portion is in close contact with the central portion of the lower surface of the movable plate (45), and a first chamber (46) is formed between the lower surface portion of the movable plate (45) and the upper surface portion of the body (11) and is connected to the discharge passage (15) by a supply passage (17), and the lower portion thereof is formed with a stem body (71) inserted into the valve spring (60), a bypass passage (72) formed along the central axis of the stem body (71) and having the upper portion communicated with the discharge passage (15) and the lower portion communicated with the second chamber (33), a support flange (73) that protrudes annularly from the outer surface of the central portion of the stem body (71) and has the lower portion in close contact with the upper portion of the valve spring (60), and an inclined surface (75) is formed on the outer surface portion. It has a technical feature including a movable stem (70) having a disk ring (74) made of synthetic resin material that is joined to the upper surface of a support flange (73);

[0008] The lower part of the above body (11) is coupled with one side of the coupling (80), the lower part of the cap body (31) is inserted into one side of the coupling (80), and the outlet (14) is sealed with a first plug (1); An auxiliary body (110) is positioned on the other side of the coupling (80), and the auxiliary body (110) includes an auxiliary body body (111) whose lower side is connected to the other side of the coupling (80), an auxiliary inlet (112) formed on one side of the auxiliary body body (111) and sealed by a second stopper (2) and communicating with the discharge path (15) by a coupling connection path (81) penetrating one side of the coupling (80), an auxiliary inlet path (113) communicated with the auxiliary inlet (112) and whose other side extends into the interior of the auxiliary body body (111), an auxiliary outlet (114) formed on the other side of the auxiliary body body (111), and whose one side extends into the interior of the auxiliary body body (111) and is communicated with the auxiliary outlet (114). An auxiliary discharge passage (115), the lower part of which is connected to one end of the auxiliary inflow passage (113) and the upper part of which is connected to one end of the auxiliary discharge passage (115), is provided with an auxiliary vertical hole (116) formed in the center of the auxiliary body body (111); the upper part of the auxiliary body (111) is sealed by an auxiliary cover (120) that is connected to the auxiliary body (111) and has a receiving space of a certain size formed therein; An auxiliary cap (130) is positioned at the lower portion of the above auxiliary body (111), and the auxiliary cap (130) is provided with an auxiliary cap body (131) having a lower portion facing the lower portion of the cam body (31) and inserted into the other side of the coupling (80) and an outer portion coupled to the lower portion of the auxiliary body body (111) and sealing the lower portion of the auxiliary vertical hole (116), an auxiliary fixing groove (132) formed at a certain depth at the center portion of the auxiliary cap body (131), and a second auxiliary chamber (133) formed at a certain depth at the center portion of the auxiliary fixing groove (132);In the receiving space of the above auxiliary cover (120), an auxiliary adjustment spring (141) having a different elastic coefficient value from the above adjustment spring (41) is positioned, and an auxiliary movable plate (145) is positioned on the upper surface of the auxiliary body (111) and has an upper surface in contact with the lower surface of the auxiliary adjustment spring (141); An auxiliary guide (150) is inserted into the above auxiliary vertical hole (116), and the above auxiliary guide (150) is provided with an auxiliary guide body (151) whose outer surface is joined to the inner surface of the auxiliary vertical hole (116), an auxiliary connecting path (152) formed in the center of the auxiliary guide body (151), an auxiliary connecting flange (153) formed along the lower edge of the auxiliary guide body (151) and whose upper surface is in close contact with the lower surface of the auxiliary vertical hole (116), and an auxiliary seat (154) which protrudes vertically downward from the lower surface of the auxiliary guide body (151) and has an auxiliary contact surface (155) of a curved shape formed along the lower inner surface; In the above auxiliary fixing groove (132), an auxiliary valve spring (160) having a lower portion that is in close contact with the bottom surface of the auxiliary fixing groove (132) and having an elasticity coefficient value different from that of the valve spring (41) is installed;In the above auxiliary connecting passage (152), an auxiliary movable stem (170) is positioned, and the auxiliary movable stem (170) is inserted into the auxiliary connecting passage (152) with the outer surface portion spaced apart from the inner surface portion of the auxiliary connecting passage (152) by a certain distance, and the upper portion thereof is in close contact with the central portion of the lower surface of the auxiliary movable plate (145), and a first auxiliary chamber (146) is formed between the lower surface portion of the auxiliary movable plate (145) and the upper surface portion of the auxiliary body body (111) by an auxiliary supply passage (117) and is connected to the auxiliary discharge passage (115), and the lower portion thereof is formed along the central axis of the auxiliary stem body (171) inserted into the auxiliary valve spring (160), and the upper portion is connected to the auxiliary discharge passage (115) and the lower portion thereof is connected to the auxiliary discharge passage (115). An auxiliary bypass (172) communicating with the second auxiliary chamber (133), an auxiliary support flange (173) that protrudes annularly from the outer surface of the central portion of the auxiliary stem body (171) and whose lower surface is in close contact with the upper portion of the auxiliary valve spring (160), and an auxiliary disc ring (174) made of synthetic resin and having an auxiliary inclined surface (175) formed on the outer surface portion and coupled to the upper surface portion of the auxiliary support flange (173) may be provided.;

[0009] Either the inclined surface (75) of the above disc ring (74) or the auxiliary inclined surface (175) of the above auxiliary disc ring (174) can have a concave curvature.

[0010] At this time, one of the inclined surface (75) or the auxiliary inclined surface (175) is inclined at an angle of △θ1 on one side facing the inflow path (13) or the auxiliary inflow path (113) and gradually increases toward the opposite side in the clockwise and counterclockwise direction, and is inclined at an angle of △θ2 (△θ1<△θ2) on the other side, so that the gap between the inclined surface (75) and the contact surface (55) of the seat (54) or the auxiliary inclined surface (175) and the auxiliary contact surface (155) of the auxiliary seat (154) on the one side facing the inflow path (13) or the auxiliary inflow path (113) forms △t1, and gradually increases toward the opposite side in the clockwise and counterclockwise direction, so that the gap on the other side may form △t2 (△t1<△t2).

[0011] The present invention comprises a disc ring made of a synthetic resin material having excellent heat resistance, strength and elasticity, and configures the opening and closing of the flow path in a point contact manner, thereby ensuring very stable operation even when opening and closing are performed repeatedly for a long time. In addition, by configuring the inclined surface shape of the disc ring to have a curved surface or different inclination angles, it is possible to arbitrarily control the discharge amount and discharge state of the gas.

[0012] In addition, the present invention combines two regulators with a coupling so that each regulator has a pressure reduction range, thereby enabling more diverse control of the pressure state of the discharged gas and maintaining the discharge state of the gas through the discharge port more uniformly.

[0013] Figure 1 is a schematic external configuration diagram of a regulator as an example according to the present invention.

[0014] Figure 2 is a schematic cross-sectional diagram of the AA′ line in the regulator posted in Figure 1.

[0015] Figures 3a and 3b each show different configurations of a disc ring in a regulator according to the present invention.

[0016] Figure 4 is another configuration diagram of a disc ring in a regulator according to the present invention.

[0017] Figure 5 is a schematic operating configuration diagram of the regulator posted in Figure 1.

[0018] Figure 6 is a schematic external configuration diagram of a regulator as another example according to the present invention.

[0019] Fig. 7 is a schematic cross-sectional diagram of the BB′ line in the regulator posted in Fig. 6.

[0020] Figure 8 is a schematic operating configuration diagram of the regulator posted in Figure 6.

[0021] Figure 9 is a schematic diagram of a conventional high-pressure gas regulator.

[0022] A preferred embodiment of the present invention will be described in detail with reference to the attached drawings as follows. In describing the embodiment of the present invention, a detailed description of matters that are not directly related to the technical features of the present invention or are obvious to a person having ordinary skill in the technical field to which the present invention pertains will be omitted.

[0023] The present invention relates to a high-pressure gas regulator, and has technical features including a body (10), a cover (20), a cap (30), an adjusting spring (41), a movable plate (45), a guide (50), a valve spring (60), and a movable stem (70). Each of these components will be examined in detail below.

[0024] The body (10) is a part that forms the body of the present invention, and may include a body (11), an inlet (12) and an inlet path (13), an outlet (14) and an outlet path (15), a vertical hole (16), and a supply path (17), as shown in each of FIGS. 1 and 2.

[0025] The body (11) forms the main body of the body (10). An inlet (12) is formed on one side of the body (11), and an inlet passage (13) is connected to the inlet (12) and the other side thereof extends into the interior of the body (11). An outlet (14) is formed on the other side of the body (11), and an outlet passage (15) is connected to the outlet (14) and the one side thereof extends into the interior of the body (11).

[0026] The vertical hole (16) is a part into which a guide (50) to be described later is inserted and joined, and its lower part is connected to one end of the inlet passage (13), its upper part is connected to one end of the discharge passage (15), and is formed in the central part of the body (11). The lower part of the supply passage (17) is connected to the discharge passage (15), and its upper part is connected to the first chamber (46) to be described later.

[0027] The cover (20) is a part that seals the upper part of the body body (11), and a receiving space of a certain size is formed inside it and is connected to the upper part of the body body (11). Unexplained drawing reference numerals 42 and 43 are a support plate and an adjusting bolt, respectively. The adjusting bolt (43) is a means for adjusting the restoring force of the adjusting spring (41) described later.

[0028] The cap (30) is a part that is coupled to the lower portion of the body body (11), and may be composed of a cap body (31), a mounting groove (32), and a second chamber (33). The cap body (31) seals the open lower portion of the vertical hole (16), and its outer surface is engaged and coupled to the lower portion of the body body (11). The mounting groove (32) is formed at a certain depth in the central portion of the cap body (31).

[0029] The second chamber (33) is a space into which the lower portion of the stem body (71) described later is inserted and into which gas supplied through the bypass (72) of the stem body (71) is filled, and is formed at a certain depth in the center of the mounting groove (32). That is, when a mounting groove (32) of a certain depth is formed in the cam body (31), a second chamber (33) is formed in the center of this mounting groove (32), thereby creating a two-stage groove structure in the cam body (31).

[0030] The adjusting spring (41) is a part that pressurizes the stem body (71), is located in the receiving space of the cover (20), and its upper part is in close contact with the lower part of the support plate (42). The upper surface of the movable plate (45) is in contact with the lower part of the adjusting spring (41), and is located on the upper surface of the body (11). Drawing symbol 46 is a first chamber, which is a space in which gas supplied through the connecting passage (17) is filled.

[0031] The guide (50) is a part corresponding to the seat part in a conventional valve, and may include a guide body (51), a connecting passage (52), a coupling flange (53), and a seat (54). The outer surface of the guide body (51) is engaged with the inner surface of the vertical hole (16) and is coupled. The connecting passage (52) is formed in the central portion of the guide body (51).

[0032] The coupling flange (53) is formed along the lower edge of the guide body (51), and its upper surface is in close contact with the lower surface of the vertical hole (16). The seat (54) is a part that opens and closes the flow path in conjunction with the disc ring (74) described later, and protrudes vertically downward in an annular shape from the lower surface of the guide body (51).

[0033] At this time, a contact surface (55) is formed on the lower inner surface of the sheet (54), and the contact surface (55) has the characteristic of being formed in a curved shape. This is to induce the contact surface (55) to close the flow path by making point contact with the inclined surface (75) of the disc ring (74), and in this case, the slip phenomenon during the process of the contact surface (55) coming into contact with the inclined surface (75) can be fundamentally prevented.

[0034] The valve spring (60) is a part that provides restoring force to the stem body (71), and its lower part is placed in close contact with the bottom surface of the mounting groove (32), and its upper part is placed in close contact with the lower surface of the support flange (73) to be described later. It is preferable to determine the elastic coefficient of the valve spring (60) by considering the elastic coefficient of the previously described adjusting spring (41).

[0035] The movable stem (70) is a part that opens and closes the flow path together with the aforementioned guide (50), and may include a stem body (71), a bypass (72), a support flange (73), and a disc ring (74). The stem body (71) is inserted through the connection path (52) with its outer surface spaced apart from the inner surface of the connection path (52) by a certain distance. Gas moves through the gap between the outer surface of the stem body (71) and the inner surface of the connection path (52).

[0036] At this time, the upper part of the stem body (71) is in close contact with the central part of the lower surface of the movable plate (45), and the lower part thereof is inserted into the valve spring (60). Accordingly, a first chamber (46) having a certain size is formed between the lower surface of the movable plate (45) and the upper surface of the body (11). As described above, the first chamber (46) is connected to the discharge passage (15) by the supply passage (17).

[0037] The bypass (72) is formed along the central axis of the stem body (71), and its upper part is connected to the discharge passage (15), and its lower part is connected to the second chamber (33). Unexplained drawing reference numeral 721 is a connecting hole connecting the discharge passage (15) and the bypass (72). The support flange (73) protrudes annularly from the outer surface of the central part of the stem body (71), and its lower surface is in close contact with the upper part of the valve spring (60).

[0038] The disc ring (74) has an inclined surface (75) formed on its outer surface and is coupled to the upper surface of the support flange (73). The coupling of the disc ring (74) can be accomplished by either bending inward a pressure member (not shown in the drawing) provided along the upper edge of the support flange (73) as shown in the drawing, or by penetrating and coupling the edge of the disc ring (74) to the support flange (73) using a separate fastening bolt.

[0039] At this time, the present invention proposes a case where the disc ring (74) is made of any one of synthetic resin materials such as polyamide, polyacetal, polycarbonate, polyethylene terephthalate, etc. These synthetic resins, called engineering plastics, have excellent characteristics in terms of heat resistance, strength, and elasticity.

[0040] As shown in Fig. 3a, when the stem body (74) is raised and lowered while the contact surface (55) of the sheet (54) is formed into a curved surface and the outer surface of the disk ring (74) made of synthetic resin material is formed into an inclined surface (75), the inclined surface (75) is in point contact with the contact surface (55) and is closely attached very stably to maintain airtightness, and very stable operation can be guaranteed even when opening and closing are performed repeatedly for a long time.

[0041] Meanwhile, the present invention does not exclude the case where the inclined surface (75) of the disc ring (74) is formed to have a concave curvature as in Fig. 3b. In the case where the inclined surface (75) has a straight shape as in Fig. 3a and in the case where the inclined surface (75) has a concave curvature as in Fig. 3b, even if the stem body (74) is raised and lowered by the same unit value (e.g., mm), the amount of change in the gap △t between the inclined surface (74) and the contact surface (55) is different.

[0042] The gap △t between the inclined surface (74) and the contact surface (55) is the open gap of the flow path, and when these are connected in a circular manner, an orifice is formed through which gas escapes. That is, when the shape of the inclined surface (75) is formed differently as in FIG. 3a and FIG. 3b, it is possible to appropriately control the flow rate of gas escaping through the flow path, and in particular, when the inclined surface (75) has a curve as in FIG. 3b, if the curvature is configured differently, the flow rate can be controlled in a more diverse manner.

[0043] At this time, the present invention proposes a case where, as shown in FIG. 4, one side of the inclined surface (75) facing the inlet (13) is inclined at an angle of △θ1, and gradually increases toward the opposite side along the clockwise and counterclockwise directions, and is formed by being inclined at an angle of △θ2, which is a value greater than △θ1, on the other side. That is, when the inclined surface (75) is viewed based on the line AA′ as shown in FIG. 1, the inclined surface (75) has a symmetrical structure left and right, and an asymmetrical structure up and down.

[0044] In this case, the gap between the inclined surface (75) and the contact surface (55) on one side facing the inlet (13) forms △t1, and gradually increases toward the opposite side in the clockwise and counterclockwise directions, so that the gap on the other side forms △t2, which is a value greater than △t1, so that more gas can escape through the open flow path located on the opposite side of the inlet (13) than through the open flow path adjacent to the inlet (13).

[0045] That is, when the high-pressure gas introduced into the inlet (13) passes through the inlet passage (13) and then exits along the open passage between the inclined surface (75) and the contact surface (55), the amount of gas exiting through △t1, which is a point adjacent to the inlet passage (13), and the amount of gas exiting through △t2, which is a point far from the inlet passage (13), can be appropriately controlled to uniformly discharge the gas through the open passage.

[0046] The schematic operational configuration of the present invention, which is composed of these components, will be examined with reference to the above-described description and the attached Figure 5.

[0047] First, before the high-pressure gas flows in, the inclined surface (75) of the disc ring (74) and the contact surface (55) of the seat (54) form a certain gap △t as shown in Fig. 3a due to the interaction of the adjusting spring (41) and the valve spring (60). That is, the inlet (13) and the discharge path (15) are in a state of being connected to each other. In this state, when the high-pressure gas flows in through the inlet (12), some of the gas passes through the inlet (13) and escapes between the inclined surface (75) and the contact surface (55) and is depressurized (see each of ① and ② of Fig. 5).

[0048] The gas that has escaped through the inlet (13) and between the inclined surface (75) and the contact surface (55) moves through the gap between the outer surface of the stem body (71) and the inner surface of the connecting passage (52), and then is depressurized again and exits through the discharge passage (15) and the discharge port (14) (see each of ③ and ④ in Fig. 5). At this time, some of the gas moving along the discharge passage (15) fills the first chamber (46) through the connecting passage (17) (see ⑤ in Fig. 5), and some of the gas fills the second chamber (33) through the bypass passage (72) (see ⑥ in Fig. 5).

[0049] Accordingly, the pressure of the gas filling the first chamber (46) acts on the lower surface of the movable plate (45), and the pressure of the gas filling the second chamber (46) also acts on the lower surface of the stem body (71), so that the stem body (71) rises upward. As the stem body (71) rises upward, the gap △t between the inclined surface (75) and the contact surface (55) becomes smaller, and accordingly, the amount of gas passing through the gap between the inclined surface (75) and the contact surface (55) decreases, and the amount of gas moving to the exhaust path (15) also gradually decreases.

[0050] When the amount of gas moving to the exhaust path (15) decreases, the amount of gas supplied to the first chamber (46) and the second chamber (33) through the connection path (17) and the bypass path (71) respectively also decreases, and accordingly, the stem body (71) gradually descends by the restoring force of the adjusting spring (41). When the stem body (71) descends, the gap △t between the inclined surface (75) and the contact surface (55) increases again, and some of the gas moving along the exhaust path (15) fills each of the first and second chambers (46, 33), and the stem body (71) rises again.

[0051] However, since the inclined surface (75) and the contact surface (55) are in complete contact and the path is not closed but a state in which a certain amount of gas moves along the path, the rise of the stem body (71) is made with a smaller value than before, and the subsequent descent of the stem body (71) is also made with a smaller value than before. As this rising and falling state of the stem body (71) is repeated and the deviation is gradually reduced, the gas pressure filled in the first and second chambers (46, 33) and the interaction of the control spring (41) and the valve spring (60) are balanced. Accordingly, the high-pressure gas flowing in through the inlet (12) is decompressed to a certain pressure by the regulator and then stably discharged and supplied through the outlet (14).

[0052] The present invention does not exclude a configuration in which two regulators are interconnected by a coupling (80), unlike the aforementioned embodiment. That is, when the first regulator performs a primary pressure reduction, the second regulator subsequently performs a secondary pressure reduction. This embodiment will be described in detail with reference to FIGS. 6 and 7, respectively. In the description of this embodiment, description of parts that are substantially similar to the aforementioned embodiment will be omitted.

[0053] First, the lower part of the body (11) is coupled with one side of the coupling (80), and the lower part of the cap body (31) is inserted into one side of the coupling (80). The coupling (80) may be formed as a tubular structure having a certain thickness, and the outlet (14) is completely sealed with the first plug (1).

[0054] An auxiliary body (110) is positioned on the other side of the coupling (80), and the auxiliary body (110) may be formed similarly to the body (10) described above, including an auxiliary body body (111), an auxiliary inlet (112) and an auxiliary inlet path (113), an auxiliary outlet (114) and an auxiliary outlet path (115), an auxiliary vertical hole (116), and an auxiliary connecting path (117).

[0055] The lower portion of the auxiliary body (111) is connected to the other side of the coupling (80), and the auxiliary inlet (112) is formed on one side of the auxiliary body (111) and sealed by the second stopper (2). At this time, the auxiliary inlet (112) is connected to the discharge passage (15) by a coupling connection passage (81) that penetrates one side of the coupling (80). The auxiliary inlet passage (113) is connected to the auxiliary inlet (112), and the other side thereof extends into the interior of the auxiliary body (111).

[0056] The auxiliary discharge port (114) is formed on the other side of the auxiliary body body (111), and the auxiliary discharge path (115) is connected to the auxiliary discharge port (114) and one side thereof extends into the interior of the auxiliary body body (111). The auxiliary vertical hole (116) has its lower side connected to one side of the auxiliary inlet path (113), its upper side connected to one side of the auxiliary discharge path (115), and is formed in the center of the auxiliary body body (111). The auxiliary cover (120) has a receiving space of a certain size formed therein and is connected to the auxiliary body (111), and thus the upper side of the auxiliary body (111) is sealed.

[0057] The auxiliary cap (130) is located at the lower portion of the auxiliary body (111) and may be composed of a cap body (31), an auxiliary fixing groove (32), and a second auxiliary chamber (133). The lower portion of the auxiliary cap body (131) faces the lower portion of the cam body (31) and is inserted into the other side of the coupling (80), and the outer surface portion thereof is coupled to the lower portion of the auxiliary body body (111) and seals the lower portion of the auxiliary vertical hole (116). The auxiliary fixing groove (132) is formed at a certain depth at the center portion of the auxiliary cap body (131), and the second auxiliary chamber (133) is formed at a certain depth at the center portion of the auxiliary fixing groove (132).

[0058] The auxiliary adjustment spring (141) is located in the receiving space of the auxiliary cover (120). At this time, the auxiliary adjustment spring (141) has a characteristic that it is configured to have an elastic coefficient of a different value from that of the adjustment spring (41). If the first regulator is configured to initially reduce pressure by a large value, it is preferable that the elastic coefficient value of the auxiliary adjustment spring (141) of the second regulator is configured to be a value smaller than the elastic coefficient value of the adjustment spring (41). The auxiliary movable plate (145) is located on the upper part of the auxiliary body (111), and the upper surface thereof is in contact with the lower part of the auxiliary adjustment spring (141).

[0059] The auxiliary guide (150) is inserted into the auxiliary vertical hole (116) and may be composed of an auxiliary guide body (151), an auxiliary connecting path (152), a coupling flange (153), and an auxiliary seat (154). The outer surface of the auxiliary guide body (151) is connected to the inner surface of the auxiliary vertical hole (116). The auxiliary connecting path (152) is formed in the central portion of the auxiliary guide body (151).

[0060] The auxiliary coupling flange (153) is formed along the lower edge of the auxiliary guide body (151), and its upper surface is in close contact with the lower surface of the auxiliary vertical hole (116). The auxiliary seat (154) protrudes vertically downward in a circular shape from the lower surface of the auxiliary guide body (151), and a curved auxiliary contact surface (155) is formed along the lower inner surface.

[0061] An auxiliary valve spring (160) is installed in the auxiliary mounting groove (132), and its lower part is in close contact with the bottom surface of the auxiliary mounting groove (132). At this time, the auxiliary valve spring (160) has a characteristic of having a different elastic coefficient value from the valve spring (60), and as described above, if the first regulator is configured to initially reduce pressure by a large value, it is preferable that the elastic coefficient value of the auxiliary adjustment spring (141) of the second regulator is made to be a value smaller than the elastic coefficient value of the adjustment spring (41).

[0062] The auxiliary movable stem (170) is located in the auxiliary connecting passage (152) and may be composed of an auxiliary stem body (171), an auxiliary bypass passage (172), an auxiliary support flange (173), and an auxiliary disc ring (174). The auxiliary stem body (171) is inserted into the auxiliary connecting passage (152) with its outer surface spaced apart from the inner surface of the auxiliary connecting passage (152) by a certain distance, and its upper portion is in close contact with the central portion of the lower surface of the auxiliary movable plate (145), and its lower portion is inserted into the auxiliary valve spring (160).

[0063] At this time, a first auxiliary chamber (146) having a certain size is formed between the lower surface of the auxiliary movable plate (145) that is in close contact with the upper surface of the auxiliary stem body (171) and the upper surface of the auxiliary body body (111). The first auxiliary chamber (146) is connected to the auxiliary discharge passage (115) by an auxiliary supply passage (117) that is formed vertically to the auxiliary body body (111). The auxiliary bypass passage (172) is formed along the central axis of the auxiliary stem body (171), and the upper portion thereof is connected to the auxiliary discharge passage (115), and the lower portion thereof is connected to the second auxiliary chamber (133).

[0064] The auxiliary support flange (173) protrudes annularly from the outer surface of the central portion of the auxiliary stem body (171), and its lower surface is in close contact with the upper portion of the auxiliary valve spring (160). The auxiliary disc ring (174) has an auxiliary inclined surface (175) formed on its outer surface and is coupled to the upper surface of the auxiliary support flange (173). At this time, the auxiliary disc ring (174) is preferably made of a synthetic resin material such as engineering plastic, as in the above-described embodiment.

[0065] In addition, the auxiliary slope (175) may not only have a concave curvature as in Fig. 3b, but may also be formed such that one side facing the auxiliary inlet (113) is inclined at an angle of △θ1, and gradually increases toward the opposite side in the clockwise and counterclockwise directions, so that the other side is inclined at an angle of △θ2, which is greater than △θ1, as in Fig. 4. These characteristics of the auxiliary slope (175) are similar to those of the above-described embodiment, so a detailed description thereof will be omitted.

[0066] A schematic operational configuration for an embodiment in which the first and second regulators are combined is described with reference to the attached Fig. 8. The operation below assumes that the first regulator located on the left in Fig. 8 performs a large-scale primary pressure reduction, and the second regulator located on the right performs a relatively smaller-scale secondary pressure reduction than the first regulator.

[0067] As in the above-described embodiment, before high-pressure gas is introduced, the inclined surface (75) of the disc ring (74) and the contact surface (55) of the seat (54), and the auxiliary inclined surface (175) of the auxiliary disc ring (74) and the auxiliary contact surface (155) of the auxiliary seat (154) are spaced apart from each other due to the interaction of the adjusting spring (41) and the valve spring (60) and the auxiliary adjusting spring (141) and the auxiliary valve spring (160), and thus the inlet (13) and the outlet (15) and the auxiliary inlet (113) and the auxiliary outlet (115) are connected to each other.

[0068] At this time, since the elastic coefficient values ​​of the auxiliary adjusting spring (141) of the adjusting spring (41) and the elastic coefficient values ​​of the valve spring (60) and the auxiliary valve spring (16) have different values, the gap between the inclined surface (75) and the contact surface (55) may be different from the gap between the auxiliary inclined surface (175) and the auxiliary contact surface (155). In this state, when high-pressure gas flows into the inlet (12) of the first regulator, some of the gas passes through the inlet (13) and escapes between the inclined surface (75) and the contact surface (55) and is depressurized (see ① and ② of FIG. 8).

[0069] The gas that has escaped through the inlet (13) and between the inclined surface (75) and the contact surface (55) moves through the gap between the outer surface of the stem body (71) and the inner surface of the connection (52), and then moves to the discharge path (15) while being depressurized again. At this time, since the discharge port (14) is closed by the first plug (1), the gas that has filled the inside of the discharge port (15) moves along the coupling connection port (81) instead of the discharge port (14) and flows into the auxiliary inlet port (113) of the second regulator (see each of ③, ④, and ⑤ of FIG. 8). That is, the high-pressure gas itself is not directly introduced into the auxiliary inlet port (113) of the second regulator, but the gas that has been first depressurized to a large value by the first regulator flows into it.

[0070] When gas flows into the auxiliary inlet (113) in a first depressurized state, some of the flowing gas escapes between the auxiliary inclined surface (175) and the auxiliary contact surface (155) and is secondarily depressurized (see ⑥ of FIG. 8), and the gas that escapes between the auxiliary inclined surface (175) and the auxiliary contact surface (155) moves through the gap between the outer surface of the auxiliary stem body (171) and the inner surface of the auxiliary connecting passage (152), and then sequentially passes through the auxiliary discharge passage (115) and the auxiliary discharge port (114) while being depressurized again and escapes to the outside (see ⑦ and ⑧ of FIG. 8, respectively).

[0071] Meanwhile, the operating configuration in which some of the gas moving along the discharge path (15) of the first regulator fills the first chamber (46) via the connection path (17) and some of the gas fills the second chamber (33) via the bypass path (72) is the same as that of the embodiment described above. Similarly, some of the gas moving along the auxiliary discharge path (115) of the second regulator fills the first auxiliary chamber (146) via the auxiliary connection path (117) and some of the gas fills the second auxiliary chamber (133) via the auxiliary bypass path (172).

[0072] Accordingly, the pressure of the gas filling each of the first chamber (46) and the first auxiliary chamber (146) acts on the lower surface of each of the movable plate (45) and the auxiliary movable plate (145), and the pressure of the gas filling each of the second chamber (46) and the second auxiliary chamber (146) also acts on the lower surface of each of the stem body (71) and the auxiliary stem body (171), and each of the stem body (71) and the auxiliary stem body (171) rises upward (moves in the left and right directions, respectively, based on FIG. 8). At this time, since the pressure of the gas filling each of the first chamber (46) and the first auxiliary chamber (146), and the second chamber (46) and the second auxiliary chamber (146) are different, the degree of elevation of each of the stem body (71) and the auxiliary stem body (171) may vary.

[0073] As the stem body (71) and the auxiliary stem body (171) are each raised upward, the gap between the inclined surface (75) and the contact surface (55) and the gap between the auxiliary inclined surface (175) and the auxiliary contact surface (155) are each reduced, and as the amount of gas passing through the gap between the inclined surface (75) and the contact surface (55) and the gap between the auxiliary inclined surface (175) and the auxiliary contact surface (155) decreases, the amount of gas moving to the exhaust path (15) and the auxiliary exhaust path (115) also gradually decreases.

[0074] When the amount of gas moving through each of the exhaust passage (15) and the auxiliary exhaust passage (115) decreases, the amount of gas supplied to each of the first chamber (46) and the second chamber (33) and the first auxiliary chamber (146) and the second auxiliary chamber (133) through each of the connecting passage (17) and the bypass passage (71) and the auxiliary connecting passage (117) and the auxiliary bypass passage (171) also decreases, and accordingly, each of the stem body (71) and the auxiliary stem body (171) gradually descends (moves in the right direction and the left direction, respectively, based on FIG. 8) by the restoring force of the adjusting spring (41) and the auxiliary adjusting spring (171).

[0075] When each of the stem body (71) and the auxiliary stem body (171) descends, the gap between the inclined surface (75) and the contact surface (55) and the gap between the auxiliary inclined surface (175) and the auxiliary contact surface (155) increases again, and some of the gas moving along each of the discharge path (15) and the auxiliary discharge path (115) refills each of the first and second chambers (46, 33) and the first and second auxiliary chambers (146, 133), and accordingly, each of the stem body (71) and the auxiliary stem body (171) ascends again.

[0076] At this time, since the inclined surface (75) and the contact surface (55) and the auxiliary inclined surface (175) and the auxiliary contact surface (155) are in complete contact with each other and the path is not closed but a certain amount of gas moves along the path, the degree of rise of each of the stem body (71) and the auxiliary stem body (171) is made to be a value smaller than the previous time, and the degree of descent of each of the subsequent stem body (71) and the auxiliary stem body (171) is also made to be a value smaller than the previous time.

[0077] As the rising and falling states of each of the stem body (71) and the auxiliary stem body (171) are repeatedly performed and the deviation thereof is gradually reduced, the gas pressure filled in each of the first and second chambers (46, 33) and the first and second auxiliary chambers (146, 133) and the interaction of the control spring (41), the valve spring (60), the auxiliary control spring (141), and the auxiliary valve spring (160) are balanced. Accordingly, the high-pressure gas flowing in through the inlet (12) is first reduced to a certain pressure by the first regulator, and then is stably discharged through the auxiliary outlet (114) in a second reduced pressure state by the second regulator.

[0078] In this way, by configuring each regulator to have a pressure reduction range and connecting them with a coupling (80) to continuously reduce the pressure of high-pressure gas, the pressure state of the discharged gas can be adjusted in a more diverse manner depending on the combination of specific pressure reduction ranges, and furthermore, since the discharge of the gas itself is configured to be controlled by two regulators, a more uniform discharge state can be expected.

[0079] Although the above description is limited to preferred embodiments of the present invention, this is merely an example, and the present invention is not limited thereto, and can be implemented by being modified in various ways, and further, it will be obvious that separate technical features can be added and implemented based on the disclosed technical idea.

[0080] The present invention can ensure very stable operation even when opening and closing are performed repeatedly for a long time, and can arbitrarily control the amount and state of gas discharged, and further, can variably control the pressure state of the discharged gas or maintain the state of gas discharged more uniformly. Therefore, it can be widely applied to equipment that reduces the pressure of gas compressed at a high pressure and stored in a tank to a certain pressure and supplies it to ships, automobiles, etc.

Claims

1. A body (10) provided with a body body (11), an inlet (12) formed on one side of the body body (11), an inlet passage (13) communicated with the inlet (12) and having the other side extended into the interior of the body body (11), an outlet (14) formed on the other side of the body body (11), an outlet passage (15) communicated with the outlet (14) and having one side extended into the interior of the body body (11), and a vertical hole (16) formed in the center of the body body (11) and having a lower side communicated with one side of the inlet passage (13) and an upper side communicated with one side of the outlet passage (15); A cover (20) that is joined to the upper part of the body (11) with a receiving space of a certain size formed inside; A cap body (31) having an outer surface portion joined to the lower surface portion of the body body (11) and sealing the lower portion of the vertical hole (16), a mounting groove (32) formed with a certain depth in the central portion of the cap body (31), and a cap (30) provided with a second chamber (33) formed with a certain depth in the central portion of the mounting groove (32); An adjustment spring (41) located in the receiving space of the cover (20), the upper surface of which is in contact with the lower surface of the adjustment spring (41) and a movable plate (45) located on the upper surface of the body (11); A guide (50) provided with a guide body (51) whose outer surface is joined to the inner surface of a vertical hole (16), a connecting path (52) formed in the center of the guide body (51), a joining flange (53) formed along the lower edge of the guide body (51) and whose upper surface is in close contact with the lower surface of the vertical hole (16), and a sheet (54) protruding vertically downward from the lower surface of the guide body (51) and forming a curved contact surface (55) along the lower inner surface; A valve spring (60) whose lower part is placed in close contact with the bottom surface of the mounting groove (32); The outer surface portion is inserted into the connecting passage (52) with a certain distance from the inner surface portion of the connecting passage (52), and the upper portion is in close contact with the lower central portion of the movable plate (45), but a first chamber (46) is formed between the lower surface portion of the movable plate (45) and the upper surface portion of the body (11) and is connected to the discharge passage (15) by a supply passage (17), and the lower portion thereof is formed with a stem body (71) inserted into the valve spring (60), a bypass passage (72) formed along the central axis of the stem body (71) and having the upper portion communicated with the discharge passage (15) and the lower portion communicated with the second chamber (33), a support flange (73) that protrudes annularly from the outer surface of the central portion of the stem body (71) and has the lower portion in close contact with the upper portion of the valve spring (60), and an inclined surface (75) is formed on the outer surface portion. A movable stem (70) having a disc ring (74) made of synthetic resin material that is joined to the upper surface of the support flange (73); High pressure gas regulator including.

2. In paragraph 1, The lower part of the above body (11) is coupled with one side of the coupling (80), the lower part of the cap body (31) is inserted into one side of the coupling (80), and the discharge port (14) is sealed with the first plug (1); An auxiliary body (110) is positioned on the other side of the coupling (80), and the auxiliary body (110) includes: an auxiliary body body (111) whose lower side is coupled with the other side of the coupling (80), an auxiliary inlet (112) formed on one side of the auxiliary body body (111) and sealed by a second plug (2) and communicating with the discharge path (15) through a coupling connection path (81) penetrating one side of the coupling (80), an auxiliary inlet path (113) communicated with the auxiliary inlet (112) and whose other side extends into the interior of the auxiliary body body (111), an auxiliary outlet (114) formed on the other side of the auxiliary body body (111), and a port connected with the auxiliary outlet (114) and whose one side extends into the interior of the auxiliary body body (111). An auxiliary discharge passage (115) is provided, the lower part of which is connected to one end of the auxiliary inflow passage (113), the upper part of which is connected to one end of the auxiliary discharge passage (115), and an auxiliary vertical hole (116) formed in the central part of the auxiliary body (111) is provided; The upper part of the auxiliary body (111) is sealed by an auxiliary cover (120) that is connected to the auxiliary body (111) and has a receiving space of a certain size formed inside; An auxiliary cap (130) is positioned on the lower portion of the above auxiliary body (111), and the auxiliary cap (130) is provided with an auxiliary cap body (131) whose lower portion faces the lower portion of the cam body (31) and is inserted into the other side of the coupling (80) and whose outer surface is joined to the lower portion of the auxiliary body body (111) and seals the lower portion of the auxiliary vertical hole (116), an auxiliary fixing groove (132) formed at a certain depth in the central portion of the auxiliary cap body (131), and a second auxiliary chamber (133) formed at a certain depth in the central portion of the auxiliary fixing groove (132); In the receiving space of the above auxiliary cover (120), an auxiliary adjustment spring (141) having a different elasticity coefficient value from the above adjustment spring (41) is positioned, and an auxiliary movable plate (145) is positioned on the upper surface of the auxiliary body (111) and has an upper surface in contact with the lower surface of the auxiliary adjustment spring (141); In the above auxiliary vertical hole (116), an auxiliary guide (150) is inserted, and the auxiliary guide (150) is provided with an auxiliary guide body (151) whose outer surface is joined to the inner surface of the auxiliary vertical hole (116), an auxiliary connecting path (152) formed in the center of the auxiliary guide body (151), an auxiliary connecting flange (153) formed along the lower edge of the auxiliary guide body (151) and whose upper surface is in close contact with the lower surface of the auxiliary vertical hole (116), and an auxiliary seat (154) which protrudes vertically downward from the lower surface of the auxiliary guide body (151) and has an auxiliary contact surface (155) of a curved shape formed along the lower inner surface; In the above auxiliary fixing groove (132), an auxiliary valve spring (160) having a lower portion that is in close contact with the bottom surface of the auxiliary fixing groove (132) and having an elasticity coefficient value different from that of the valve spring (41) is installed; In the above auxiliary connecting passage (152), an auxiliary movable stem (170) is positioned, and the auxiliary movable stem (170) is inserted into the auxiliary connecting passage (152) with its outer surface spaced apart from the inner surface of the auxiliary connecting passage (152) by a certain distance, and its upper portion is in close contact with the lower central portion of the auxiliary movable plate (145), and a first auxiliary chamber (146) is formed between the lower portion of the auxiliary movable plate (145) and the upper surface of the auxiliary body (111) by an auxiliary supply passage (117) and is connected to the auxiliary discharge passage (115), and its lower portion is connected to an auxiliary valve spring (160), and an auxiliary stem body (171) is formed along the central axis of the auxiliary stem body (171), and its upper portion is connected to the auxiliary discharge passage (115) and its lower portion is connected to the auxiliary valve spring (160). A high-pressure gas regulator characterized by comprising: an auxiliary bypass (172) communicating with a second auxiliary chamber (133); an auxiliary support flange (173) that protrudes annularly from the outer surface of the central portion of an auxiliary stem body (171) and has a lower surface that is in close contact with the upper portion of an auxiliary valve spring (160); and an auxiliary disc ring (174) made of synthetic resin and having an auxiliary inclined surface (175) formed on the outer surface thereof and joined to the upper surface of the auxiliary support flange (173).

3. In either of paragraphs 1 or 2, A high-pressure gas regulator characterized in that either the inclined surface (75) of the above-mentioned disc ring (74) or the auxiliary inclined surface (175) of the above-mentioned auxiliary disc ring (174) has a concave curvature.

4. In paragraph 3, A high-pressure gas regulator, characterized in that one of the inclined surface (75) or the auxiliary inclined surface (175) is inclined at an angle of △θ1 on one side facing the inflow path (13) or the auxiliary inflow path (113) and gradually increases toward the opposite side in the clockwise and counterclockwise direction to be inclined at an angle of △θ2 (△θ1<△θ2) on the other side, so that the gap between the inclined surface (75) and the contact surface (55) of the seat (54) or the auxiliary inclined surface (175) and the auxiliary contact surface (155) of the auxiliary seat (154) on the one side facing the inflow path (13) or the auxiliary inflow path (113) forms △t1 and gradually increases toward the opposite side in the clockwise and counterclockwise direction to form △t2 (△t1<△t2) on the other side.

Images