High-pressure gas pressure reducing valve

Abstract

The utility model discloses a high-pressure gas pressure reducing valve, which relates to the technical field of pressure reducing valves and comprises a valve body, a cavity is arranged inside the valve body, connecting flanges are fixedly arranged on two sides of the valve body and are communicated with the cavity, a fixing pipe is arranged in the middle of the valve body in a penetrating manner and is perpendicular to the cavity, and the fixing pipe is connected with the valve body. And an insertion pipe is inserted into the fixed pipe. The fixing pipe is arranged in the middle of the valve body, the inserting pipe is arranged in the fixing pipe in an inserted mode, the inserting pipe is installed in the fixing pipe in an inserted mode, the pressure reducing structures of the valve body are all arranged in the inserting pipe, and when the pressure reducing structures go wrong, the inserting pipe can be directly taken out of the fixing pipe to be replaced; and the valve body which is not easy to damage does not need to be replaced, and the valve body does not need to be detached from the pipeline, so that the pressure reducing valve is convenient to maintain.

Description

TECHNICAL FIELD

[0001] The utility model relates to pressure reducing valve technical field, especially relate to a high pressure gas pressure reducing valve. BACKGROUND

[0002] The pressure reducing valve is through adjusting, import pressure is reduced to certain export pressure needed, and relies on the energy of medium itself, makes the export pressure automatic keeping stable valve. From the point of view of fluid mechanics, the pressure reducing valve is a local resistance can change throttle element, that is through changing the throttle area, makes the flow velocity and the kinetic energy of fluid change, causes different pressure loss, thereby reaches the purpose of reducing pressure. Then relies on the adjustment of control and regulation system, makes the fluctuation of valve after pressure and spring force balance, makes the valve after pressure keep constant in certain error range.

[0003] Such as the announcement number for CN219263290U a high pressure gas pressure reducing valve, relate to high pressure gas delivery related technical field. The utility model discloses a valve body, hexagonal transfer block, middle transfer shell and spring seat, the lower part of valve body is set up with the screw hole, and the lower part of valve body is provided with hexagonal transfer block, and the top center of hexagonal transfer block is fixed with threaded column, and threaded column is connected in screw hole, and the top of valve body is fixed with middle transfer shell, and the top of middle transfer shell is fixed with spring seat, and the inside of spring seat is hollow, and the lower part in spring seat is provided with the restriction disc with the diameter less than the inner diameter of spring seat. The utility model discloses a valve body, hexagonal transfer block, middle transfer shell and spring seat, solve the minimum pressure of high pressure gas pressure reducing valve input and cannot be adjusted, and the structure of the structure between the middle transfer high pressure gas and pressure relief structure is not closed in time, and the problem of easy high pressure gas pressure loss excessive.

[0004] The above technical scheme has some problems in actual application, the internal structure of the pressure reducing valve is fixedly installed, the pressure reducing valve needs to be replaced as a whole when the internal structure is damaged, the cost is high, the connection between the pressure reducing valve and the pipeline is not convenient to disassemble, the maintenance is not convenient, and the pressure reducing valve adjusts the pressure by the spring, and the spring will be fatigued in the long-term use, which affects the precision of the device.

[0005] Therefore, it is necessary to provide a high pressure gas pressure reducing valve to solve the above problems. UTILITY MODEL CONTENTS

[0006] The utility model discloses a high pressure gas pressure reducing valve, to solve the problem in the background art.

[0007] To achieve the above object, the utility model provides the following technical scheme: A high pressure gas pressure reducing valve, including the valve body, the inside of valve body is equipped with the cavity, both sides of valve body all are fixedly arranged with the connecting flange, and the connecting flan with cavity is linked, the middle part of valve body is provided with fixed pipe, and fixed pipe is perpendicular with cavity and is provided, the inside of fixed pipe is inserted and is provided with the spigot, both sides of spigot all are fixedly arranged with the air deflector cover of coinciding with cavity, the inside of air deflector cover is fixedly arranged with the air deflector pipe, the bottom of two air deflector pipes is fixedly arranged with the air inlet pipe and air outlet pipe respectively, the inside of spigot is fixedly arranged with the baffle of annular structure, the bottom of air outlet pipe extends to the below of baffle, the upper surface of baffle is provided with the insertion hole, the inside of insertion hole is inserted and is provided with the plug, and the plug is arranged in the just below of air inlet pipe, the bottom of plug is fixedly arranged with the movable plate of annular structure, the lower surface of movable plate is fixedly arranged with the telescopic air bag.

[0008] Preferably, the telescopic air bag can only be telescopic in the vertical direction, and the bottom end of the telescopic air bag is fixedly provided with an end plate.

[0009] Preferably, the upper surface of the end plate is movably provided with an adjusting screw in the middle through a bearing, and the top end of the spigot is provided with a screw hole matched with the adjusting screw.

[0010] Preferably, the top end of the plug is provided in a hemispherical structure, and the top end of the plug is matched with the bottom end of the air inlet pipe.

[0011] Preferably, the top end of the spigot is provided with a sealing cover through bolts, and the sealing cover is arranged above the fixed pipe, the bottom end of the spigot is fixedly provided with a bottom plate, and the bottom plate is arranged below the fixed pipe.

[0012] Preferably, the top end of the adjusting screw is fixedly provided with a hand wheel, and the hand wheel is arranged above the sealing cover.

[0013] The technical effects and advantages of the utility model are as follows:

[0014] 1. The utility model discloses a fixed pipe, a spigot is inserted and arranged in the inside of the fixed pipe, the spigot is installed in the inside of the fixed pipe in the form of insertion, the pressure reducing structure of the valve body is arranged in the inside of the spigot, when the pressure reducing structure has a problem, the spigot can be directly taken out from the fixed pipe for replacement, the valve body that is not easy to damage does not need to be replaced and does not need to be disassembled from the pipeline, thereby facilitating the maintenance of the pressure reducing valve.

[0015] 2. The utility model discloses a plug-in pipe is provided with the air inlet pipe and the air outlet pipe in the inside, and the lower portion of air inlet pipe is provided with the plug -in block, and the bottom of plug -in block is provided with telescopic air bag through the movable plate, and high pressure gas enters telescopic air bag in the process of passing through air inlet pipe and air outlet pipe, and when the gas pressure is too big, telescopic air bag expands under the action of air pressure, so that the plug -in block blocks air inlet pipe, to reach the pressure -reducing effect, compared with using spring to reduce pressure, telescopic air bag does not appear the problem of spring metal fatigue elasticity weakening when long -term use, so that the device is more stable when long -term use. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the whole structure schematic diagram of the utility model.

[0017] Figure 2 It is the whole structure cross -section schematic diagram of the utility model.

[0018] Figure 3 It is the whole structure cross -section schematic diagram of the utility model.

[0019] Figure 4 It is the plug-in pipe structure schematic diagram of the utility model.

[0020] In the drawing: 1, valve body;2, connecting flange;3, fixed pipe;4, plug-in pipe;5, gas guide cover;6, gas guide pipe;7, air inlet pipe;8, air outlet pipe;9, baffle;10, plug hole;11, plug -in block;12, movable plate;13, telescopic air bag;14, end plate;15, adjusting screw;16, sealing cover;17, bottom plate;18, hand wheel. DETAILED DESCRIPTION

[0021] The technical scheme in the embodiments of the utility model will be described clearly and completely below in combination with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work belong to the scope of protection of the utility model.

[0022] The utility model provides a kind of high pressure gas pressure reducing valve as Figures 1-4 As shown in formula, including valve body 1, the inside of valve body 1 is equipped with cavity, both sides of valve body 1 are fixedly provided with connecting flange 2, and connecting flange 2 is communicated with cavity, and the middle part of valve body 1 is provided with fixed pipe 3, and fixed pipe 3 is vertically arranged with cavity, and the inside of fixed pipe 3 is provided with plug-in pipe 4;

[0023] Both sides of the insertion tube 4 are fixedly equipped with air guide covers 5 that overlap with the cavity. An air guide tube 6 is fixedly installed inside the air guide cover 5. An air inlet tube 7 and an air outlet tube 8 are fixedly installed at the bottom ends of the two air guide tubes 6, respectively. An annular partition 9 is fixedly installed inside the insertion tube 4. The bottom end of the air outlet tube 8 extends to the bottom of the partition 9. An insertion hole 10 is provided through the upper surface of the partition 9. An insertion block 11 is inserted into the insertion hole 10, and the insertion block 11 is located directly below the air inlet tube 7.

[0024] The bottom end of the insert block 11 is fixedly provided with a ring-shaped movable plate 12, and the lower surface of the movable plate 12 is fixedly provided with a telescopic airbag 13. The telescopic airbag 13 can only extend and retract in the vertical direction. The vertically extending and retracting telescopic airbag 13 can drive the insert block 11 to move up and down, so as to block the air intake pipe 7.

[0025] An end plate 14 is fixedly installed at the bottom of the telescopic airbag 13. An adjusting screw 15 is movably installed in the middle of the upper surface of the end plate 14 via a bearing. A screw hole adapted to the adjusting screw 15 is opened at the top of the insertion tube 4. The adjusting screw 15 cooperates with the screw hole to adjust the position of the end plate 14. The end plate 14 can adjust the initial deformation range of the telescopic airbag 13, thereby adjusting the gas pressure required when the telescopic airbag 13 deforms and drives the insertion block 11 to block the air inlet pipe 7, thereby adjusting the decompression range of the device.

[0026] The top of the insert 11 is set as a hemispherical structure, and the top of the insert 11 is adapted to the bottom of the air intake pipe 7. The hemispherical structure of the insert 11 makes it easier to block the air intake pipe 7. It should be noted that the insert 11 can be made of a suitable material according to the type of gas, which will not be elaborated here.

[0027] A sealing cap 16 is bolted to the top of the insertion tube 4 and is positioned above the fixed tube 3. A base plate 17 is fixedly mounted at the bottom of the insertion tube 4 and is positioned below the fixed tube 3. The sealing cap 16 and the base plate 17 limit the insertion tube 4 within the fixed tube 3.

[0028] A handwheel 18 is fixedly installed at the top of the adjusting screw 15, and the handwheel 18 is located above the sealing cover 16. The handwheel 18 facilitates the rotation of the adjusting screw 15.

[0029] Working principle of this utility model:

[0030] In use, the valve body 1 is connected to the gas pipeline through the connecting flange 2, the gas enters the cavity in the valve body 1 through the connecting flange 2, and then enters the cannula 4 through the gas guide cover 5 and the gas inlet pipe 7. At this time, the high-pressure gas enters the chamber composed of the partition plate 9, the movable plate 12 and the telescopic air bag 13, and then enters the subsequent pipeline through the gas outlet pipe 8 and the connecting flange 2. When the gas pressure is too high, the gas pressure in the partition plate 9, the movable plate 12 and the telescopic air bag 13 rises, and the telescopic air bag 13 expands under the action of the gas pressure. Since the telescopic air bag 13 can only expand vertically, the telescopic air bag 13 can drive the plug 11 to move upward when it expands, so that the plug 11 blocks the gas inlet pipe 7. At this time, the gas in the chamber composed of the partition plate 9, the movable plate 12 and the telescopic air bag 13 is discharged through the gas outlet pipe 8 to realize pressure reduction. When the gas pressure decreases, the telescopic air bag 13 contracts, the plug 11 separates from the gas inlet pipe 7, and the high-pressure gas continues to be injected to realize continuous supply of the gas.

[0031] When it is necessary to adjust the pressure reduction range of the device, the adjusting screw 15 is rotated to drive the end plate 14 to move up and down, and the end plate 14 can adjust the initial deformation range of the telescopic air bag 13, so as to adjust the gas pressure required when the telescopic air bag 13 deforms to drive the plug 11 to block the gas inlet pipe 7, thereby realizing adjustment of the pressure reduction range of the device.

[0032] When the pressure reduction structure fails, the bolts between the sealing cover 16 and the cannula 4 are removed to release the limiting between the cannula 4 and the fixed pipe 3, so that the cannula 4 can be taken out from the fixed pipe 3 for replacement, thereby completing the rapid maintenance of the device without replacing the valve body 1.

[0033] Finally, it should be pointed out that the above-mentioned is only the preferred embodiment of the present application and is not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacement for part of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A high-pressure gas pressure-reducing valve comprising a valve body (1), characterized in that: The inside of the valve body (1) is provided with a cavity, both sides of the valve body (1) are fixedly provided with a connecting flange (2), and the connecting flange (2) is communicated with the cavity, the middle part of the valve body (1) is provided with a fixed tube (3), and the fixed tube (3) is vertically arranged with the cavity, the inside of the fixed tube (3) is provided with a cannula (4), both sides of the cannula (4) are fixedly provided with a gas guide cover (5) coinciding with the cavity, the inside of the gas guide cover (5) is fixedly provided with a gas guide pipe (6), the bottom ends of the two gas guide pipes (6) are fixedly provided with an air inlet pipe (7) and an air outlet pipe (8) respectively, the inside of the cannula (4) is fixedly provided with a ring-shaped partition plate (9), the bottom end of the air outlet pipe (8) extends below the partition plate (9), the upper surface of the partition plate (9) is provided with a plug hole (10), the inside of the plug hole (10) is provided with a plug (11), and the plug (11) is arranged directly below the air inlet pipe (7), the bottom end of the plug (11) is fixedly provided with a ring-shaped movable plate (12), and the lower surface of the movable plate (12) is fixedly provided with an inflatable air bag (13).

2. A high-pressure gas pressure-reducing valve according to claim 1, characterized by: The inflatable air bag (13) can only stretch and contract in the vertical direction, and the bottom end of the inflatable air bag (13) is fixedly provided with an end plate (14).

3. A high-pressure gas pressure-reducing valve according to claim 2, characterized by: The upper surface of the end plate (14) is movably provided with an adjusting screw (15) in the middle part through a bearing, and the top end of the cannula (4) is provided with a screw hole matched with the adjusting screw (15).

4. A high-pressure gas pressure-reducing valve according to claim 3, characterized by: The top end of the plug (11) is provided in a hemispherical structure, and the top end of the plug (11) is matched with the bottom end of the air inlet pipe (7).

5. A high pressure gas pressure reducing valve according to claim 4, characterized in that: The top end of the cannula (4) is provided with a sealing cover (16) through bolts, and the sealing cover (16) is arranged above the fixed tube (3), the bottom end of the cannula (4) is fixedly provided with a bottom plate (17), and the bottom plate (17) is arranged below the fixed tube (3).

6. A high-pressure gas pressure-reducing valve according to claim 5, characterized by: The top end of the adjusting screw (15) is fixedly provided with a hand wheel (18), and the hand wheel (18) is arranged above the sealing cover (16).

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