High-pressure large-flow axial-flow type gas pressure regulator

Abstract

The invention discloses a high-pressure large-flow axial-flow type fuel gas pressure regulator, and relates to the technical field of axial-flow type fuel gas pressure regulators, the high-pressure large-flow axial-flow type fuel gas pressure regulator comprises a fuel gas regulator valve seat, a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are respectively arranged at two ends of the fuel gas regulator valve seat, and a valve core is arranged in the middle of the fuel gas regulator valve seat; a fixed inner cavity is welded in the gas regulator valve seat; the sealing gasket is used for sealing the sealing block and the first connecting pipe, so that leakage of fuel gas from the sealing block and the inner wall of the first connecting pipe is reduced, it is ensured that the sealing gasket is tightly attached to the inner wall of the first connecting pipe, the inner wall of the fuel gas regulator valve seat can be cleaned through the cleaning sponge of the fixing plate, and the service life of the fuel gas regulator valve seat is prolonged. And dust accumulated in the gas regulator is reduced, the position of the sealing block cannot be changed by clamping the end of the clamping strip and the second clamping hook, and the situation that a gap exists between the sealing gasket and the inner wall of the first connecting pipe can also be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of axial flow gas pressure regulators, in particular to a high-pressure and large-flow axial flow gas pressure regulator. Background Art

[0002] Axial flow pressure regulator is a device used to regulate fluid pressure. It is widely used in pressure control of non-corrosive gases such as natural gas, liquefied petroleum gas, and air. Its working principle mainly relies on the relative movement between the sleeve and the inlet and outlet rectifying fences to achieve pressure regulation. The axial flow pressure regulator achieves gas pressure regulation through the relative movement between the sleeve and the inlet and outlet rectifying fences. It uses the pressure difference principle and there is no need to worry about flow hole blockage. It has the advantages of simple structure, easy maintenance, and stable performance.

[0003] In the prior art, the axial flow gas pressure regulator expands and contracts the sealing block through the fixed inner cavity to close the inner wall of the first connecting pipe, and the gas flow of the gas regulator can be controlled at high pressure and large flow. However, when the sealing block of the fixed inner cavity is closed, it is easy to cause a gap between the sealing block and the inner wall of the first connecting pipe, resulting in a loose gas closure or gas leakage. The sealing block needs to be sealed with the inner wall of the first connecting pipe. In addition, there is a small amount of dust or foreign matter in the gas, which can easily cause dust accumulation inside the gas regulator when passing through the gas regulator. When the dust accumulates too much, it blocks the gas outlet of other gas equipment. The dust inside the gas regulator needs to be cleaned in time to avoid long-term accumulation of dust inside the gas regulator. Summary of the invention

[0004] The object of the present invention is to provide a high-pressure and large-flow axial-flow gas pressure regulator to solve the problems raised in the above-mentioned background technology.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A high-pressure, high-flow axial-flow gas pressure regulator comprises a gas regulator valve seat, a first connecting pipe and a second connecting pipe, the first connecting pipe and the second connecting pipe are respectively arranged at the two ends of the gas regulator valve seat, a valve core is arranged in the middle of the gas regulator valve seat, a fixed inner cavity is welded inside the gas regulator valve seat, a spur gear 2 is transversely arranged inside the fixed inner cavity, a vertically arranged rack 3 is arranged inside the gas regulator valve seat and the fixed inner cavity, the rack 3 is connected to the valve core, a transversely arranged rack 4 is arranged inside the fixed inner cavity, and the rack 3 and the rack 4 are both meshed with the spur gear 2, a sealing opening and closing structure is arranged inside the first connecting pipe and at one end of the fixed inner cavity, the sealing opening and closing structure comprises a sealing block, the sealing block is arranged at the end of the rack 3, and the sealing block A circle of fixing groove 1 is provided on the side wall, and a sealing gasket is provided inside the fixing groove 1. The sealing gasket of the sealing block contacts the inner wall of the first connecting pipe, and the sealing gasket is used to seal the gap between the sealing block and the first connecting pipe. A fixing groove 2 is provided inside the end face of the sealing block, and a plurality of clamping strips and a plurality of connecting pins are provided inside the fixing groove 2. The connecting pins are provided at the side wall of the sealing block. The clamping strip and the connecting pins are arranged in an annular array, and the clamping strip is rotatably connected to the connecting pins. A guide block is provided at the end of the fixed inner cavity, and the guide blocks are arranged in an annular array. The end of the clamping strip is slidably connected to the guide block. A guide rod is provided inside the fixing groove 2, and a telescopic spring is provided on the outside of the guide rod. The guide rod is slidably connected to the clamping strip, and the end of the clamping strip is used to press against the edge of the sealing gasket.

[0006] As a preferred technical solution of the present invention, a guide hole is opened in the middle of each clamping strip, the shape of the axis of the guide hole is an arc, the shape of the axis of the guide rod is an arc, the center of the arc of the guide rod and the center of the arc of the guide hole are both adapted to the axis of the connecting pin, and the guide rod is slidably connected to the guide hole.

[0007] As a preferred technical solution of the present invention, the position of the guide block corresponds to the position of the clamping strip, the shape of the fixing groove 2 is V-shaped, the end shape of the clamping strip is L-shaped, and the end of each clamping strip fits with the edge of the sealing gasket.

[0008] As a preferred technical solution of the present invention, a cleaning structure is arranged between the inner wall of the gas regulator valve seat and the side wall of the fixed inner cavity, the cleaning structure includes two spur gears 1, the spur gear 1 is arranged on the inner wall of the fixed inner cavity, a rack 2 is arranged inside the fixed inner cavity and on one side of the spur gear 1, the end of the rack 2 is fixed to the end face of the sealing block, a plurality of fixed plates are sleeved on the outer wall of the fixed inner cavity, a rack 1 is welded between each of the fixed plates, the position of the rack 1 is aligned with the position of the rack 2, the rack 1 and the rack 2 are both meshed with the spur gear 1, the fixed inner cavity is slidably connected to the inner walls of each of the fixed plates, a cleaning sponge is arranged at the edge of each of the fixed plates, and air holes are opened on the surface of each of the fixed plates, the cleaning sponge of the fixed plate is in contact with the inner wall of the gas regulator valve seat and the inner wall of the first connecting pipe, and the cleaning sponge is used to clean dust on the inner wall of the gas regulator valve seat and the first connecting pipe.

[0009] As a preferred technical solution of the present invention, a fixed shaft is arranged in the middle of the spur gear one, and the fixed shaft is rotatably connected to the inner wall of the fixed inner cavity, and two fixed grooves three are opened on the side wall of the fixed inner cavity, and the two spur gears one are respectively located inside the two fixed grooves three.

[0010] As a preferred technical solution of the present invention, a reserved groove is provided on the surface of one of the fixed plates, the position of the reserved groove is aligned with the position of the valve core, rack one and rack two are close to or away from each other, rack one and the sealing block move synchronously, rack two and each fixed plate move synchronously, and the gap distance between two adjacent fixed plates is smaller than the distance the sealing block moves.

[0011] As a preferred technical solution of the present invention, a locking structure is provided at the end of the fixed inner cavity, and the locking structure includes a clamping hook 1, which is arranged at the end of the clamping strip, and a matching groove 1 is provided at the end of the two racks 2, and connecting rods are inserted into the inside of the two matching grooves 1, and a fixing ring is welded between the two connecting rods, and a circle of clamping hook 2 is welded on the edge of the fixing ring, and a matching groove 2 is provided inside each guide block, and the matching groove 2 is smoothly connected to the inner wall of the fixed inner cavity, and the position of the clamping hook 1 corresponds to the position of the clamping hook 2.

[0012] As a preferred technical solution of the present invention, the clamping hook 2 is located inside the matching groove 2, and the ends of the clamping hook 2 are slidably connected to the inside of the matching groove 2 and the inner wall of the fixed inner cavity, and the shape of the clamping hook 1 and the shape of the clamping hook 2 are L-shaped and F-shaped respectively, the connecting rod is slidably connected to the inside of the matching groove 1, and the movement direction of the clamping hook 1 and the clamping hook 2 are the same.

[0013] As a preferred technical solution of the present invention, when the sealing block is close to the end of the fixed inner cavity, the clamping hook 1 and the clamping hook 2 are separated, and the clamping hook 2 slides along the inside of the matching groove 2 and the inner wall of the fixed inner cavity.

[0014] As a preferred technical solution of the present invention, when the sealing block is away from the end of the fixed inner cavity, the clamping hook 1 at the end of the clamping strip is engaged with the clamping hook 2, and the engaging position of the clamping hook 1 and the clamping hook 2 is located at the matching groove 2.

[0015] Compared with the prior art, the present invention has the following beneficial effects: A sealing opening and closing structure is provided, and a sealing gasket is used to seal the sealing block and the first connecting pipe, thereby reducing the leakage of gas from the sealing block and the inner wall of the first connecting pipe, and the sealing gasket is compressed by the end of the clamping strip, thereby ensuring that the sealing gasket is closely fitted to the inner wall of the first connecting pipe, thereby ensuring the tight sealing in the gas regulator; A cleaning structure is provided. When the sealing block is closed, the fixed plate and the rack can be moved. The cleaning sponge of the fixed plate can clean the inner wall of the gas regulator valve seat. When the sealing block moves, the inner wall of the gas regulator can be cleaned, which reduces dust accumulation inside the gas regulator. It is more intelligent. When the sealing block is opened, each fixing plate moves in the opposite direction, and the dust cleaned by the cleaning sponge is discharged from the first connecting pipe, so that the dust can be discharged from the inside of the gas regulator valve seat in time; A locking structure is provided. When the sealing block is away from the fixed inner cavity end, the end of the clamping strip and the clamping hook are engaged with each other so that the position of the sealing block will not change, the position of the sealing block can be positioned, and a gap between the sealing gasket and the inner wall of the first connecting tube can be avoided. When the sealing block is close to the fixed inner cavity end, the end of the clamping strip and the clamping hook are separated so that the sealing block will not be affected in moving. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0017] Figure 1 This is a main structure diagram of a high-pressure and large-flow axial-flow gas pressure regulator of the present invention; Figure 2 It is a schematic diagram of a fixed inner cavity of a high-pressure and large-flow axial-flow gas pressure regulator of the present invention; Figure 3 It is a schematic diagram of the sealing opening and closing structure of a high-pressure and large-flow axial-flow gas pressure regulator of the present invention; Figure 4 It is a schematic diagram of a sealing gasket of a high-pressure and large-flow axial-flow gas pressure regulator of the present invention; Figure 5 For the present invention Figure 4 A magnified image of point A; Figure 6 A schematic diagram of the cleaning structure of a high-pressure and large-flow axial-flow gas pressure regulator of the present invention; Figure 7A schematic diagram of a cleaning sponge for a high-pressure and high-flow axial-flow gas pressure regulator according to the present invention; Figure 8 It is a schematic diagram of rack 1 and rack 2 of a high-pressure and large-flow axial-flow gas pressure regulator of the present invention; Fig. 9 This is a schematic diagram of a locking structure of a high-pressure and large-flow axial-flow gas pressure regulator according to the present invention; Fig.10 It is a schematic diagram of the second matching groove of a high-pressure and large-flow axial-flow gas pressure regulator of the present invention; Fig.11 The present invention is a schematic diagram of the appearance of a clamping hook 1 and a clamping hook 2 of a high-pressure and large-flow axial-flow gas pressure regulator.

[0018] In the figure: 1. gas regulator valve seat; 2. first connecting pipe; 3. second connecting pipe; 4. valve core; 5. sealing opening and closing structure; 51. sealing block; 52. clamping strip; 53. connecting pin; 54. sealing gasket; 55. fixing groove one; 56. guide block; 57. fixing groove two; 58. guide rod; 59. telescopic spring; 510. guide hole; 6. cleaning structure; 61. fixing plate; 62. fixing groove three; 63. spur gear one; 64. rack one; 65. cleaning sponge; 66. air vent; 67. rack two; 68. reserved groove; 7. locking structure; 71. clamping hook one; 72. matching groove one; 73. connecting rod; 74. fixing ring; 75. matching groove two; 76. clamping hook two; 8. fixed inner cavity; 9. rack three; 10. rack four; 11. spur gear two. DETAILED DESCRIPTION

[0019] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-Figure 5As shown, a high-pressure and large-flow axial-flow gas pressure regulator comprises a gas regulator valve seat 1, a first connecting pipe 2 and a second connecting pipe 3, the first connecting pipe 2 and the second connecting pipe 3 are respectively arranged at the two ends of the gas regulator valve seat 1, a valve core 4 is arranged in the middle of the gas regulator valve seat 1, a fixed inner cavity 8 is welded inside the gas regulator valve seat 1, a spur gear 2 11 is transversely arranged inside the fixed inner cavity 8, a vertically arranged rack 3 9 is arranged inside the gas regulator valve seat 1 and the fixed inner cavity 8, the rack 3 9 is connected to the valve core 4, a transversely arranged rack 4 10 is arranged inside the fixed inner cavity 8, and the rack 3 9 and the rack 4 10 are both meshed with the spur gear 2 11, the interior of the axial-flow pressure regulator is composed of a fixed inner cavity 8 and a sealing block 51, and the gas from The second connecting pipe 3 enters the inside of the gas regulator valve seat 1, and then the rack 3 9 in the regulating valve core 4 rises, so that the rack 3 9 drives the spur gear 2 11 to rotate, and the spur gear 2 11 drives the rack 4 10 to move, thereby pulling the sealing block 51 to move, so that the sealing block 51 is about to close the first connecting pipe 2, and the flow is controlled by the sealing block 51 through the fixed inner cavity 8, and finally discharged from the first connecting pipe 2. A sealing opening and closing structure 5 is arranged inside the first connecting pipe 2 and at one end of the fixed inner cavity 8. The sealing opening and closing structure 5 includes a sealing block 51, which is arranged at the end of the rack 3 9. When the rack 3 9 moves, it drives the sealing block 51 to move, and a circle of fixed grooves 55 are provided on the side wall of the sealing block 51, and the inner sleeve of the fixed groove 55 A sealing gasket 54 is provided. The sealing gasket 54 of the sealing block 51 contacts the inner wall of the first connecting pipe 2. The sealing gasket 54 is used to seal the gap between the sealing block 51 and the first connecting pipe 2, so that the sealing gasket 54 of the sealing block 51 contacts the inner wall of the first connecting pipe 2, so that the first connecting pipe 2 is sealed by the sealing gasket 54 to prevent internal gas leakage of the first connecting pipe 2. A fixing groove 57 is provided inside the end surface of the sealing block 51. A plurality of clamping strips 52 and a plurality of connecting pins 53 are provided inside the fixing groove 57. The connecting pins 53 are provided at the side wall of the sealing block 51. The connecting pins 53 are obliquely inserted into the side wall of the sealing block 51. The clamping strips 52 and the connecting pins 53 are arranged in a ring array. The clamping strips 52 are rotatably connected to the connecting pins 53. 2 can rotate around the connecting pin 53, so that the clamping strip 52 is located in the second fixing groove 57 and swings. A guide block 56 is provided at the end of the fixed inner cavity 8. The guide blocks 56 are arranged in a ring array. The end of the clamping strip 52 is slidably connected with the guide block 56. The end of the clamping strip 52 contacts the guide block 56 so that the clamping strip 52 presses against the end of the fixed inner cavity 8. A guide rod 58 is provided inside the second fixing groove 57. A telescopic spring 59 is sleeved on the outside of the guide rod 58. The guide rod 58 is slidably connected with the clamping strip 52. The end of the clamping strip 52 is used to press against the edge of the sealing gasket 54. The telescopic spring 59 moves along the guide rod 58, so that the clamping strip 52 rotates around the connecting pin 53, so that the clamping strip 52 presses against the end of the fixed inner cavity 8.

[0021] See also Figure 4 and Figure 5 As shown, a guide hole 510 is provided in the middle of each clamping strip 52, the shape of the axis of the guide hole 510 is an arc, the shape of the axis of the guide rod 58 is an arc, the center of the arc of the guide rod 58 and the center of the arc of the guide hole 510 are both compatible with the axis of the connecting pin 53, the guide rod 58 is slidingly connected to the guide hole 510, and the telescopic spring 59 moves along the guide rod 58, so that the telescopic spring 59 presses against the clamping strip 52 and swings around the connecting pin 53, thereby pressing the clamping strip 52 against the end of the fixed inner cavity 8.

[0022] See also Figure 5 As shown, the position of the guide block 56 corresponds to the position of the clamping strip 52, the shape of the fixing groove 57 is V-shaped, the end of the clamping strip 52 is L-shaped, and the end of each clamping strip 52 fits with the edge of the sealing gasket 54. When the clamping strip 52 rotates, the end of the clamping strip 52 presses the sealing gasket 54 against the inner wall of the first connecting tube 2 to ensure that the sealing gasket 54 blocks the gap between the first connecting tube 2 and the sealing block 51.

[0023] It should be noted that the gas enters from the second connecting pipe 3 and is discharged from the first connecting pipe 2. The gas is controlled by the gas regulator valve seat 1 and the valve core 4. When the flow discharged from the first connecting pipe 2 needs to be controlled, the valve core 4 can be lifted so that the valve core 4 drives the rack 3 9 to rise and fall. After the rack 3 9 drives the spur gear 2 11 to rotate, the spur gear 2 11 drives the rack 4 10 to move, and the rack 4 10 drives the sealing block 51 to move. When the sealing block 51 contacts the first connecting pipe 2, gas leakage can be avoided, and the flow of gas can be controlled according to the distance between the sealing block 51 and the inner wall of the first connecting pipe 2. When the sealing block 51 contacts the inside of the first connecting pipe 2, it is necessary to ensure that the sealing block 51 and the first The inner wall of the connecting pipe 2 is sealed. Specifically, when the sealing block 51 is away from the end of the fixed inner cavity 8, the sealing block 51 moves the clamping strip 52 under the action of the telescopic spring, so that the clamping strip 52 moves along the guide rod 58, and the end of the clamping strip 52 is slidably connected with the guide block 56, so that the end of the clamping strip 52 is against the end of the fixed inner cavity 8. The end of the clamping strip 52 can press the sealing gasket 54 to ensure that the sealing gasket 54 has good sealing performance. When the sealing block 51 is close to the end of the fixed inner cavity 8, the clamping strip 52 can be rotated around the connecting pin 53, and the clamping strip 52 slides along the guide block 56 to compress the telescopic spring 59. At this time, the sealing block 51 is separated from the inner wall of the first connecting pipe 2 so that the gas flows normally.

[0024] See also Figure 2 , Figure 6 and Figure 7As shown, a cleaning structure 6 is arranged between the inner wall of the gas regulator valve seat 1 and the side wall of the fixed inner cavity 8. The cleaning structure 6 includes two spur gears 1 63. The spur gear 1 63 is arranged at the inner wall of the fixed inner cavity 8. The spur gear 1 63 can rotate around the inside of the fixed inner cavity 8. A rack 2 67 is arranged inside the fixed inner cavity 8 and on one side of the spur gear 1 63. The end of the rack 2 67 is fixed to the end face of the sealing block 51. The sealing block 51 moves synchronously with the rack 4 10 so that the sealing block 51 can be cleaned. The sealing block 51 drives the rack 2 67 to move, and the outer wall of the fixed inner cavity 8 is sleeved with a plurality of fixed plates 61, and a rack 1 64 is welded between each fixed plate 61, so that the rack 1 64 and the fixed plate 61 move, so that the inner ring of the fixed plate 61 is slidably connected with the fixed inner cavity 8, and the outer ring of the fixed plate 61 moves with the inner wall of the gas regulator valve seat 1 and the inner wall of the first connecting pipe 2, and the position of the rack 1 64 is aligned with the position of the rack 2 67, and the rack 1 64 and the rack 2 67 are both connected with the spur gear 1 The spur gear 1 63 is meshed with each other, the rack 2 67 drives the spur gear 1 63 to rotate, so that the spur gear 1 63 drives the rack 1 64 to move, and when the sealing block 51 is away from the fixed inner cavity 8, it drives the fixed plate 61 and the rack 1 64 to move, and the fixed inner cavity 8 is slidably connected with the inner wall of each fixed plate 61, and the rack 1 64 moves along the outer wall of the fixed inner cavity 8. A cleaning sponge 65 is provided at the edge of each fixed plate 61, and the cleaning sponge 65 is used to clean the inner wall of the first connecting pipe 2 and the inner wall of the gas regulator valve seat 1. Clean to avoid dust on the inner wall of the gas regulator valve seat 1 and the inner wall of the first connecting pipe 2. Each fixed plate 61 has an air vent 66 on its surface for flowing gas. The cleaning sponge 65 of the fixed plate 61 is in contact with the inner wall of the gas regulator valve seat 1 and the inner wall of the first connecting pipe 2. The cleaning sponge 65 is used to clean dust on the inner wall of the gas regulator valve seat 1 and the inner wall of the first connecting pipe 2 to avoid dust accumulation on the inner wall of the gas regulator valve seat 1 and the inner wall of the first connecting pipe 2.

[0025] See also Figure 8 As shown, a fixed shaft is provided in the middle of the spur gear 1 63, and the fixed shaft is rotatably connected to the inner wall of the fixed inner cavity 8. Two fixed grooves 3 62 are provided on the side wall of the fixed inner cavity 8. The two spur gears 1 63 are respectively located inside the two fixed grooves 3 62. The spur gear 1 63 can be located inside the fixed grooves 3 62 and rotate, so that the spur gear 1 63 can rotate freely.

[0026] See also Figure 7 and Figure 8As shown, a reserved groove 68 is provided on the surface of one of the fixed plates 61, and the position of the reserved groove 68 is aligned with the position of the valve core 4, and the rack 1 64 and the rack 2 67 are close to or away from each other. When the rack 1 64 drives the fixed plate 61 to move, the reserved groove 68 of one of the fixed plates 61 will not be affected by the valve core 4, the rack 1 64 and the sealing block 51 move synchronously, and the rack 2 67 and each fixed plate 61 move synchronously. The gap distance between two adjacent fixed plates 61 is smaller than the moving distance of the sealing block 51. When the sealing block 51 moves, the fixed plate 61 will move, so that there is an overlapping area when the two adjacent fixed plates 61 move, ensuring that the inner wall of the gas regulator valve seat 1 can be cleaned.

[0027] It should be noted that when the sealing block 51 is moved, the rack 2 67 fixed on the sealing block 51 will be driven to move, so that the rack 2 67 drives the spur gear 1 63 to rotate, and the spur gear 1 63 drives the rack 1 64 to move. Since the rack 1 64 is welded to each fixed plate 61, the rack 1 64 drives each fixed plate 61 to move synchronously, and the cleaning sponge 65 on the edge of the fixed plate 61 cleans the inner wall of the gas regulator valve seat 1 to prevent dust accumulation on the inner wall of the gas regulator valve seat 1. When the sealing block 51 is close to the end of the fixed inner cavity 8, the fixed plate 61 and the rack 1 64 move in opposite directions, so that the cleaning sponge 65 of the fixed plate 61 cleans the inner wall of the gas regulator valve seat 1 again, and the length of the rack 1 64 and the diameter of the fixed plate 61 can be adjusted according to the cleaning needs, so that the edge of the fixed plate 61 can clean the inner walls of the gas regulator valve seat 1, the first connecting pipe 2 and the second connecting pipe 3, thereby reducing the accumulation of dust inside the gas regulator.

[0028] See also Figure 2 and Fig. 9 As shown, a locking structure 7 is provided at the end of the fixed inner cavity 8, and the locking structure 7 includes a clamping hook 71, which is arranged at the end of the clamping strip 52, and the clamping hook 71 at the end of the clamping strip 52 moves along the guide block 56. The ends of the two racks 67 are provided with a matching groove 72, and connecting rods 73 are inserted into the inside of the two matching grooves 72, and a fixing ring 74 is welded between the two connecting rods 73, and the fixing ring 74 is restricted by the connecting rod 73, so that the fixing ring 74 moves with the connecting rod 73. A circle of clamping hooks 2 76 is welded on the edge of the fixing ring 74, and a matching groove 2 75 is provided inside each guide block 56, and the matching groove 2 75 is smoothly connected to the inner wall of the fixed inner cavity 8, and the position of the clamping hook 1 71 corresponds to the position of the clamping hook 2 76. When the fixing ring 74 moves, the clamping hook 2 76 of the fixing ring 74 can be engaged with the clamping hook 1 71 of the clamping strip 52, thereby limiting the position of the sealing block 51.

[0029] See also Fig.10 and Fig.11As shown, the clamping hook 2 76 is located inside the matching groove 2 75, and the end of the clamping hook 2 76 is slidably connected to the inside of the matching groove 2 75 and the inner wall of the fixed inner cavity 8, and the shape of the clamping hook 1 71 and the shape of the clamping hook 2 76 are L-shaped and F-shaped respectively, the connecting rod 73 is slidably connected to the inside of the matching groove 1 72, the movement direction of the clamping hook 1 71 and the clamping hook 2 76 are the same, and the clamping hook 1 71 at the end of the clamping strip 52 is engaged with the clamping hook 2 76 to avoid changes in the position of the clamping strip 52.

[0030] See also Fig.10 and Fig.11 As shown, when the sealing block 51 is close to the end of the fixed inner cavity 8, the clamping hook 1 71 and the clamping hook 2 76 move in the same direction, and the clamping hook 1 71 and the clamping hook 2 76 are separated. When the clamping strip 52 is close to the end of the fixed inner cavity 8, it will drive the clamping strip 52 to move, so that the clamping hook 1 71 at the end of the clamping strip 52 moves along the guide block 56, and the clamping hook 2 76 slides along the matching groove 2 75 and the inside of the fixed inner cavity 8. Since there is a chamfer at the F-shaped clamping hook 2 76, the rack 2 67 and the rack 1 64 that are close to each other can separate the L-shaped end of the clamping hook 1 71 from the opening of the clamping hook 2 76, and the clamping hook 1 71 and the clamping hook 2 76 each move along their own movement paths and will not be affected by the clamping hook 1 71 and the clamping hook 2 76.

[0031] See also Fig.10 and Fig.11 As shown, when the sealing block 51 is away from the end of the fixed inner cavity 8, the clamping hook 1 71 at the end of the clamping strip 52 is engaged with the clamping hook 2 76, and the engaging position of the clamping hook 1 71 and the clamping hook 2 76 is located at the matching groove 2 75. The sealing block 51 is away from the end of the fixed inner cavity 8, so that the clamping hook 1 71 at the end of the clamping strip 52 is close to the guide block 56, and at the same time, the clamping hook 2 76 is slidably connected along the inner wall of the fixed inner cavity 8 and the inside of the matching groove 2 75, and the clamping hook 1 71 and the clamping hook 2 76 are engaged at the matching groove 2 75 position.

[0032] It should be noted that when the sealing block 51 is away from the end of the fixed inner cavity 8, the sealing block 51 moves so that the clamping hook 1 71 at the end of the clamping strip 52 moves to the matching groove 2 75 of the guide block 56, and the rack 2 67 moves with the sealing block 51, so that the fixing ring 74 of the two rack 2 67 brackets slides, so that the clamping hook 2 76 at the fixing ring 74 moves along the inner wall of the fixed inner cavity 8 and the inside of the matching groove 2 75, and the clamping hook 1 71 and the clamping hook 2 76 are located near the matching groove 2 75. The engagement can ensure that the positions of the sealing block 51 and the sealing gasket 54 will not change. When the sealing block 51 is close to the end of the fixed inner cavity 8, the clamping hook 71 at the end of the clamping strip 52 moves along the surface of the guide block 56, and the sealing block 51 drives the rack 2 67 to approach the fixed inner cavity 8. Since there is a chamfer angle at the F-shaped clamping hook 2 76, the rack 2 67 and the rack 1 64 approaching each other can detach the L-shaped end of the clamping hook 1 71 from the opening of the clamping hook 2 76. After the rack 2 67 moves a certain distance, the clamping hook 1 71 detaches from the clamping hook 2 76.

[0033] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A high-pressure, high-flow axial-flow gas pressure regulator, comprising a gas regulator valve seat (1), a first connecting pipe (2) and a second connecting pipe (3), wherein the first connecting pipe (2) and the second connecting pipe (3) are respectively arranged at two ends of the gas regulator valve seat (1), a valve core (4) is arranged in the middle of the gas regulator valve seat (1), a fixed inner cavity (8) is welded inside the gas regulator valve seat (1), a spur gear 2 (11) is transversely arranged inside the fixed inner cavity (8), a vertically arranged rack 3 (9) is arranged inside the gas regulator valve seat (1) and the fixed inner cavity (8), the rack 3 (9) is connected to the valve core (4), a transversely arranged rack 4 (10) is arranged inside the fixed inner cavity (8), and the rack 3 (9) and the rack 4 (10) are both meshed with the spur gear 2 (11), characterized in that: A sealing opening and closing structure (5) is provided inside the first connecting tube (2) and at one end of the fixed inner cavity (8). The sealing opening and closing structure (5) comprises a sealing block (51). The sealing block (51) is provided at the end of the rack three (9). A fixing groove one (55) is provided on the side wall of the sealing block (51). A sealing gasket (54) is sleeved inside the fixing groove one (55). The sealing gasket (54) of the sealing block (51) contacts the inner wall of the first connecting tube (2). The sealing gasket (54) is used to seal the gap between the sealing block (51) and the first connecting tube (2). A fixing groove two (57) is provided inside the end surface of the sealing block (51). The fixing groove two (57) is provided inside A clamping strip (52) and a plurality of connecting pins (53), wherein the connecting pins (53) are arranged on the side wall of the sealing block (51), the clamping strip (52) and the connecting pins (53) are arranged in an annular array, the clamping strip (52) is rotatably connected to the connecting pins (53), a guide block (56) is arranged at the end of the fixed inner cavity (8), the guide block (56) is arranged in an annular array, the end of the clamping strip (52) is slidably connected to the guide block (56), a guide rod (58) is arranged inside the second fixed groove (57), a telescopic spring (59) is sleeved on the outside of the guide rod (58), the guide rod (58) is slidably connected to the clamping strip (52), and the end of the clamping strip (52) is used to abut against the edge of the sealing gasket (54).

2. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 1, characterized in that: A guide hole (510) is provided in the middle of each clamping strip (52); the axis of the guide hole (510) is in the shape of an arc; the axis of the guide rod (58) is in the shape of an arc; the arc center of the guide rod (58) and the arc center of the guide hole (510) are both compatible with the axis of the connecting pin (53); the guide rod (58) and the guide hole (510) are slidably connected.

3. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 2, characterized in that: The position of the guide block (56) corresponds to the position of the clamping strip (52), the second fixing groove (57) is V-shaped, the end of the clamping strip (52) is L-shaped, and the end of each clamping strip (52) fits the edge of the sealing gasket (54).

4. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 3, characterized in that: A cleaning structure (6) is provided between the inner wall of the gas regulator valve seat (1) and the side wall of the fixed inner cavity (8), the cleaning structure (6) comprising two spur gears (63), the spur gears (63) being provided on the inner wall of the fixed inner cavity (8), a rack (67) being provided inside the fixed inner cavity (8) and on one side of the spur gears (63), the end of the rack (67) being fixed to the end face of the sealing block (51), the outer wall of the fixed inner cavity (8) being provided with a plurality of fixed plates (61), the racks (64) being welded between the fixed plates (61), the racks (64) being provided with a plurality of fixed plates (61) and ... The position of the fixed plate (61) is aligned with the position of the rack gear 2 (67), the rack gear 1 (64) and the rack gear 2 (67) are meshed with the spur gear 1 (63), the fixed inner cavity (8) is slidably connected to the inner wall of each fixed plate (61), a cleaning sponge (65) is provided at the edge of each fixed plate (61), and a vent hole (66) is provided on the surface of each fixed plate (61). The cleaning sponge (65) of the fixed plate (61) is in contact with the inner wall of the gas regulator valve seat (1) and the inner wall of the first connecting pipe (2), and the cleaning sponge (65) is used to clean dust from the inner wall of the gas regulator valve seat (1) and the inner wall of the first connecting pipe (2).

5. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 4, characterized in that: A fixed shaft is arranged in the middle of the spur gear one (63), and the fixed shaft is rotatably connected to the inner wall of the fixed inner cavity (8). The side wall of the fixed inner cavity (8) is provided with two fixed grooves three (62), and the two spur gears one (63) are respectively located inside the two fixed grooves three (62).

6. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 5, characterized in that: A reserved groove (68) is provided on the surface of one of the fixed plates (61), the position of the reserved groove (68) is aligned with the position of the valve core (4), the rack one (64) and the rack two (67) are moved closer to or farther from each other, the rack one (64) and the sealing block (51) move synchronously, the rack two (67) and each fixed plate (61) move synchronously, and the gap distance between two adjacent fixed plates (61) is smaller than the moving distance of the sealing block (51).

7. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 6, characterized in that: A locking structure (7) is provided at the end of the fixed inner cavity (8), and the locking structure (7) includes a clamping hook (71), and the clamping hook (71) is provided at the end of the clamping strip (52). The ends of the two racks (67) are provided with a matching groove (72), and connecting rods (73) are inserted into the inside of the two matching grooves (72), and a fixing ring (74) is welded between the two connecting rods (73). A circle of clamping hooks (76) is welded on the edge of the fixing ring (74), and a matching groove (75) is provided inside each guide block (56), and the matching groove (75) is smoothly connected to the inner wall of the fixed inner cavity (8), and the position of the clamping hook (71) corresponds to the position of the clamping hook (76).

8. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 7, characterized in that: The clamping hook 2 (76) is located inside the matching groove 2 (75), and the end of the clamping hook 2 (76) is slidably connected to the inside of the matching groove 2 (75) and the inner wall of the fixed inner cavity (8), and the shape of the clamping hook 1 (71) and the shape of the clamping hook 2 (76) are L-shaped and F-shaped respectively, and the connecting rod (73) is slidably connected to the inside of the matching groove 1 (72), and the movement direction of the clamping hook 1 (71) and the clamping hook 2 (76) are the same.

9. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 8, characterized in that: When the sealing block (51) approaches the end of the fixed inner cavity (8), the first clamping hook (71) and the second clamping hook (76) are separated, and the second clamping hook (76) slides along the inside of the second matching groove (75) and the inner wall of the fixed inner cavity (8).

10. A high-pressure, high-flow axial-flow gas pressure regulator according to claim 8, characterized in that: When the sealing block (51) is away from the end of the fixed inner cavity (8), the clamping hook 1 (71) at the end of the clamping strip (52) is engaged with the clamping hook 2 (76), and the engaging position of the clamping hook 1 (71) and the clamping hook 2 (76) is located at the matching groove 2 (75).

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