Gas pipeline pressure adjusting device

Abstract

The utility model provides a pressure regulating device for a gas pipeline. The pressure regulating device is characterized in that a first ring body is arranged in a first sleeve; a second ring body is arranged in the second sleeve, and an annular flange is arranged on the periphery of the second ring body; the piston assembly comprises a piston disc, a first rod body, a second rod body and an elastic piece, the piston disc is provided with a through hole, the piston disc is arranged between the first sleeve and the second sleeve, the first rod body penetrates through the first ring body, the second rod body penetrates through the second ring body, and the first sleeve, the second sleeve, the first ring body, the second ring body, the first rod body and the second rod body are coaxial; the elastic piece sleeves the first rod body; when the piston assembly is subjected to external force, the piston disc can be driven to be attached to the annular flange so that the first sleeve and the second sleeve can be communicated through the through hole of the piston disc, and when the external force disappears, the piston disc is separated from the annular flange, and communication between the first sleeve and the second sleeve is recovered.

Description

Technical Field

[0001] The utility model relates to a pressure regulating device, in particular to a gas pipeline pressure regulating device that can automatically block or open a pipeline according to the high or low gas pressure. Background Art

[0002] Between a container filled with gas under high pressure and a device using the gas, pipelines are usually connected, and a pressure gauge, a pneumatic valve or other required precision instruments are provided on the pipelines. The user opens or closes the switch on the container as needed to control the gas in the container to flow into the device through the pipeline. The above-mentioned container and device include, for example, a gas cylinder and a gas stove.

[0003] In the case of a gas cylinder and a gas stove, the gas cylinder is filled with gas under high pressure, and pipelines are connected between the gas cylinder and the gas stove. Usually, a gas meter, a pneumatic valve or other measuring instruments are provided on the pipelines. A switch is provided on the gas cylinder. When the user wants to use gas, the switch can be turned on to allow the gas in the gas cylinder to flow into the pipeline and reach the gas stove through the pipeline. Then, the user can use the gas stove. When the gas stove is not in use, the user closes the switch on the gas cylinder.

[0004] However, since the gas is filled in the gas cylinder under high pressure, when the user turns on the switch, the gas is instantaneously released from the container, thus forming a great pressure in the pipeline.

[0005] When the gas is instantaneously released, the pressure generated rushes towards the gas meter, pneumatic valve or other measuring instruments provided on the pipeline, often causing damage to the gas meter, pneumatic valve or other measuring instruments.

[0006] Although the above problem of damaging the instruments can be avoided by slowly opening the switch to slowly release the gas, it is not easy to control the force of slowly opening the switch. And generally speaking, when the user needs to use gas, they usually subconsciously directly open the switch, neglecting the problem of high gas pressure.

[0007] Similarly, the same problem exists between other containers filled with gas under high pressure and the devices using the gas.

[0008] Therefore, how to develop a "gas pipeline pressure regulating device" that can automatically block or open a pipeline according to the high or low gas pressure is an urgent problem to be solved by those skilled in the related technical fields. Summary of the Utility Model

[0009] In view of the problems of the above-mentioned conventional techniques, the purpose of the present utility model is to provide a gas pipeline pressure regulating device that can automatically block or open a pipeline according to the gas pressure, which can not only avoid damage to the precision instruments of the pipeline, but also improve the convenience of use.

[0010] According to the purpose of the present utility model, the present utility model provides a gas pipeline pressure regulating device, which is characterized by comprising:

[0011] A first sleeve, which is axially penetrated in parallel with an axis inside, a first ring body is arranged inside the first sleeve, and there is at least one first through portion between the outer peripheral edge of the first ring body and the inner side wall of the first sleeve;

[0012] A second sleeve, which is axially penetrated in parallel with the axis inside, one axial end of which is connected to one axial end of the first sleeve, a second ring body is arranged inside the second sleeve, and there is at least one second through portion between the outer peripheral edge of the second ring body and the inner side wall of the second sleeve. An annular flange is arranged outside the second ring body, and the annular flange protrudes a height towards the first sleeve in the axis direction. The first sleeve, the second sleeve, the first ring body and the second ring body are coaxial, and there is a first distance between the first ring body and the second ring body in the axis direction;

[0013] A piston assembly, which includes a piston disk, the outer diameter of the piston disk is larger than the inner diameter of the annular flange, the piston disk has a thickness in the axis direction, and the thickness is smaller than the first distance. The piston disk has a first surface and a second surface opposite to each other in the axis direction. At least one through hole penetrating the first surface and the second surface is arranged on the piston disk. A first rod body protrudes from the first surface, and a second rod body protrudes from the second surface. The piston disk is arranged between the first sleeve and the second sleeve. The first rod body passes through the first ring body, and the second rod body passes through the second ring body. The first sleeve, the second sleeve, the first ring body, the second ring body, the first rod body and the second rod body are coaxial; and

[0014] An elastic member, which is sleeved outside the first rod body, one end of which is connected to the first rod body, and the other end of which abuts against the first ring body. The elastic direction of the elastic member is parallel to the axis; when an external force parallel to the axis acts on the piston assembly, the elastic member can be compressed and the piston disk of the piston assembly can be driven to abut against the annular flange, so that the first sleeve and the second sleeve are communicated through the through hole of the piston disk. When the external force disappears, the piston disk and the annular flange are separated, and the interiors of the first sleeve and the second sleeve are restored to be communicated.

[0015] For the gas pipeline pressure regulating device described above, wherein: the first sleeve has a first end portion and a second end portion that are opposite and communicate with each other in the axis direction, the second sleeve has a third end portion and a fourth end portion that are opposite and communicate with each other in the axis direction, and threads that can be screwed with each other are arranged between the third end portion and the second end portion, so that the first sleeve and the second sleeve are connected to each other.

[0016] The described gas pipeline pressure regulating device, wherein: the second end is provided with an internal thread, the third end is provided with an external thread, and the third end is screwed into the second end.

[0017] The described gas pipeline pressure regulating device, wherein: the first end is provided with an internal thread for screwing and connecting to an intake pipeline of a gas container, and the fourth end is provided with an external thread for screwing and connecting to an outlet pipeline of a gas-using device.

[0018] The described gas pipeline pressure regulating device, wherein: an end of the first rod body is provided with a snap ring, and opposite ends of the elastic member in the elastic direction respectively abut against the snap ring and the first ring body.

[0019] The described gas pipeline pressure regulating device, wherein: the piston disc has a neck, a sealing member is provided on the neck, an outer diameter of the sealing member is greater than an inner diameter of the annular flange, and when an external force parallel to the axis acts on the piston assembly, the sealing member of the piston assembly can be driven to abut against the annular flange.

[0020] The described gas pipeline pressure regulating device, wherein: the sealing member is made of rubber.

[0021] The described gas pipeline pressure regulating device, wherein: the first rod body is inserted through the first ring body with a loose fit, and the second rod body is inserted through the second ring body with a loose fit.

[0022] The described gas pipeline pressure regulating device, wherein: a plurality of first connecting arms are provided on an outer peripheral edge of the first ring body, the plurality of first connecting arms are connected to the inner side wall of the first sleeve, and at least one first through portion is formed between the plurality of first connecting arms, so that the inside of the first sleeve is axially penetrated in the axial direction of the axis.

[0023] The described gas pipeline pressure regulating device, wherein: a plurality of second connecting arms are provided on an outer peripheral edge of the second ring body, the plurality of second connecting arms are connected to the inner side wall of the second sleeve, and at least one second through portion is formed between the plurality of second connecting arms, so that the inside of the second sleeve is axially penetrated parallel to the axis.

[0024] The described gas pipeline pressure regulating device, wherein: a ratio of a diameter of the through hole to an inner diameter of the annular flange is between 1:5 and 1:20.

[0025] The gas pipeline pressure regulating device provided by the present utility model can automatically block or open the pipeline according to the high or low pressure of the gas, which can not only prevent the precision instruments in the pipeline from being damaged, but also improve the convenience of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a combined structural schematic diagram of an embodiment of the present utility model.

[0027] Figure 2 is Figure 1 Schematic diagram of the decomposition structure of the embodiment.

[0028] Figure 3 is Figure 1 Top view structure schematic diagram of the embodiment.

[0029] Figure 4 is Figure 3 Enlarged structure schematic diagram of the A-A section of

[0030] Figure 5 Enlarged structure schematic diagram of the axial movement of the piston assembly of the present utility model.

[0031] Figure 6 is Figure 1 Structure schematic diagram of the embodiment without a seal.

[0032] Figure 7 is Figure 1 Implementation structure schematic diagram of the embodiment.

[0033] Figures 8 to 10 is Figure 1 Actuating state structure schematic diagram of the embodiment.

[0034] Explanation of reference numerals: 100 - Gas pipeline pressure regulating device; 10 - First sleeve; 11 - First end; 111 - Internal thread; 12 - Second end; 121 - Internal thread; 13 - First ring body; 14 - First connecting arm; 15 - Inner side wall; 16 - First through portion; 20 - Second sleeve; 21 - Third end; 211 - External thread; 22 - Fourth end; 221 - External thread; 23 - Second ring body; 24 - Second connecting arm; 25 - Inner side wall; 26 - Second through portion; 27 - Annular flange; 30 - Piston assembly; 31 - Piston disc; 311 - First face; 312 - Second face; 313 - Neck; 32 - Seal; 33 - First rod body; 34 - Second rod body; 35 - Snap ring; 36 - Through hole; 37 - Elastic member; 91 - Inlet pipeline; 92 - Gas container; 93 - Outlet pipeline; 94 - Gas using device; 95 - Measuring instrument; A - Gas; C - Axis center; D1 - Outer diameter; D2 - Inner diameter; D3 - Hole diameter; D4 - Outer diameter; F - External force; H - Height; L - First distance; T - Thickness. Detailed implementation manners

[0035] The embodiments of the gas pipeline pressure regulating device according to the present utility model will be described below with reference to the relevant drawings. For the sake of clear and convenient illustration of the drawings, the components in the drawings may be presented with exaggeration or reduction in size and proportion. In the following description and / or claims, when referring to an element "connected" or "coupled" to another element, it may be directly connected or coupled to the other element or there may be an intervening element; while when referring to an element "directly connected" or "directly coupled" to another element, there is no intervening element, and other words used to describe the relationship between elements or layers should be interpreted in the same way. For the sake of easy understanding, the same elements in the following embodiments are denoted by the same symbols for description.

[0036] Please refer to Figure 1 As shown, a gas pipeline pressure regulating device 100 provided by the present utility model includes a first sleeve 10, a second sleeve 20 and a piston assembly 30.

[0037] Please refer to Figures 2 to 4 As shown, the first sleeve 10 has a first end 11 and a second end 12 that are opposite and communicate with each other parallel to the axis C.

[0038] A first ring body 13 is provided inside the first sleeve 10. A plurality of first connecting arms 14 are provided on the outer peripheral edge of the first ring body 13 and are connected to the inner side wall 15 of the first sleeve 10. At least one first through portion 16 is formed between the plurality of first connecting arms 14, so that the inside of the first sleeve 10 is axially penetrated parallel to the axis C.

[0039] Please refer to Figures 2 to 4 As shown, the second sleeve 20 has a third end 21 and a fourth end 22 that are opposite and communicate with each other in the direction of the axis C.

[0040] A second ring body 23 is provided inside the second sleeve 20. A plurality of second connecting arms 24 are provided on the outer peripheral edge of the second ring body 23 and are connected to the inner side wall 25 of the second sleeve 20. At least one second through portion 26 is formed between the plurality of second connecting arms 24, so that the inside of the second sleeve 20 is axially penetrated in the direction of the axis C.

[0041] The first sleeve 10 and the second sleeve 20 are connected to each other. For example, in the illustrated embodiment, an internal thread 121 is provided at the second end 12, an external thread 211 is provided at the third end 21, and the third end 21 is screwed into the second end 12. However, it is not limited thereto. For example, the threads of the third end 21 and the second end 12 can be swapped.

[0042] Please refer to Figure 2 and Figure 4 As shown, a ring-shaped flange 27 is provided around the second ring body 23. The ring-shaped flange 27 protrudes a height H towards the first sleeve 10 in the direction of the axis C.

[0043] Please refer to Figure 4 As shown, the first sleeve 10, the second sleeve 20, the first ring body 13 and the second ring body 23 are coaxial, and there is a first distance L between the first ring body 13 and the second ring body 23 in the direction of the axis C.

[0044] Please refer to Figures 2 to 4 As shown, the piston assembly 30 includes a piston disk 31 and an elastic member 37. The piston disk 31 has a neck portion 313, and a seal member 32 is provided on the neck portion 313. The outer diameter D1 of the seal member 32 is larger than the inner diameter D2 of the annular flange 27. The material of the seal member 32 can be, for example, rubber.

[0045] The piston disk 31 has a thickness T in the direction of the axis C, and the thickness T is smaller than the first distance L. The piston disk 31 has a first surface 311 and a second surface 312 opposite to each other in the direction of the axis C. A first rod body 33 protrudes from the first surface 311, and a second rod body 34 protrudes from the second surface 312. A snap ring 35 is provided at the end of the first rod body 33.

[0046] A plurality of through holes 36 penetrating the first surface 311 and the second surface 312 are provided on the piston disk 31. The aperture D3 of the through holes 36 is set according to actual needs. For example, the ratio of the aperture D3 of the through holes 36 to the inner diameter D2 of the annular flange 27 is between 1:5 and 1:20.

[0047] Please refer to Figures 2 to 4 As shown, the piston disk 31 is disposed between the first sleeve 10 and the second sleeve 20. The first rod body 33 is inserted through the first ring body 13 with a loose fit, and the second rod body 34 is inserted through the second ring body 23 with a loose fit. The first sleeve 10, the second sleeve 20, the first ring body 13, the second ring body 23, the first rod body 33 and the second rod body 34 are coaxial.

[0048] Please refer to Figures 2 to 4 As shown, the elastic member 37 is sleeved around the first rod body 33. The elastic direction of the elastic member 37 is parallel to the axis C, and the opposite ends of the elastic member 37 in its elastic direction respectively abut against the snap ring 35 and the first ring body 13.

[0049] It must be noted that the function of providing the snap ring 35 is to enable one end of the elastic member 37 to abut against the snap ring 35 to achieve the purpose of connecting with the first rod body 33. In addition, the elastic member 37 and the first rod body 33 can be connected by other structures, and it is not limited to using the snap ring 35.

[0050] Please refer to Figure 5As shown, when an external force F parallel to the axis C acts on the piston assembly 30, the compressible elastic member 37 accumulates compression energy, causing a part of the first rod body 33 to retract into the first sleeve 10, and driving the seal 32 of the piston disk 31 of the piston assembly 30 to abut against the annular flange 27, so that the first sleeve 10 and the second sleeve 20 are only connected through the through hole 36.

[0051] When the external force F disappears, the elastic force generated by the accumulated compression energy of the elastic member 37 can pull the first rod body 33 of the piston disk 31 out of the first sleeve 10, separating the seal 32 from the annular flange 27, thereby restoring the internal communication between the first sleeve 10 and the second sleeve 20, as Figure 4 shown in the state.

[0052] Please refer to Figure 6 shown. It should be noted that Figure 2 and Figure 4 shown, the function of the seal 32 is to improve the tightness when the piston disk 31 abuts against the annular flange 27. However, as Figure 6 shown, as long as the outer diameter D4 of the piston disk 31 of the piston assembly 30 is greater than the inner diameter D2 of the annular flange 27 of the second sleeve 20, when the piston assembly 30 is subjected to an external force F parallel to the axis C, the piston disk 31 can cover the annular flange 27, and the seal 32 does not need to be used.

[0053] Please refer to Figure 7 and Figure 8 shown to illustrate the state of the connection pipeline of the present invention with an external device. The first end 11 of the gas pipeline pressure regulating device 100 is provided with an internal thread 111 to threadedly engage an intake pipeline 91, the intake pipeline 91 is connected to a gas container 92, and the fourth end 22 is provided with an external thread 221 to threadedly engage an outlet pipeline 93, and the outlet pipeline 93 is connected to a gas-using device 94. A measuring instrument 95 is provided on the outlet pipeline 93.

[0054] The gas container 92 is filled with gas under high pressure, and the gas-using device 94 is a device that uses the gas. For example, if the gas container 92 is filled with high-pressure gas, the gas-using device 94 is a gas stove or other appliances that use gas, and the measuring instrument 95 can be a gas meter, a pneumatic valve or other measuring instruments.

[0055] Please refer to Figures 7 to 10 shown to illustrate the working principle of the present invention.

[0056] Please refer to Figure 7 and Figure 8As shown, when the gas container 92 is in a closed state, no gas enters the air inlet pipe 91, the piston disc 31 (together with the seal 32) of the piston assembly 30 is separated from the annular flange 27 of the second sleeve 20, and a connecting passage is formed inside the air inlet pipe 91, the first sleeve 10, the second sleeve 20, and the air outlet pipe 93.

[0057] See also Figure 7 and Figure 9 As shown, when the gas container 92 is opened, Figure 8 The gas A is shown entering the air intake pipe 91. Due to the sudden opening of the gas container 92, the gas A released instantly generates an external force F with high pressure, and the external force F pushes the piston plate 31 (together with the seal 32) to move toward the annular flange 27. When the seal 32 is in contact with the annular flange 27, the first sleeve 10 and the second sleeve 20 are connected only through the through hole 36 of the piston plate 31. Figure 9 shown.

[0058] In other words, most of the gas A will be blocked in the first sleeve 10, and only a very small amount of gas A will enter the second sleeve 20 through the through hole 36. This very small amount of gas A does not have high pressure, so the measuring instrument 95 or the gas-using device 94 will not be directly impacted by high pressure.

[0059] See also Figure 7 and Figure 10 As shown, when the pressure of the gas A in the first sleeve 10 is gradually released, Figure 9 The pressure of the external force F shown in the figure also gradually decreases. After the pressure on the piston disc 31 (together with the seal 32) decreases, it will gradually separate from the annular flange 27, so that the first sleeve 10 and the second sleeve 20 are connected again. Figure 10 Gas A can flow into the air inlet pipeline 91, the first sleeve 10, the second sleeve 20, the air outlet pipeline 93 in sequence, and then pass through the measuring instrument 95 and reach the air using device 94.

[0060] In summary, the gas pipeline pressure regulating device provided by the utility model can automatically block or open the pipeline according to the gas pressure, which can not only avoid damage to the precision instruments in the pipeline, but also improve the convenience of use.

[0061] Although the present invention has been disclosed by the above-described embodiments, it is not intended to limit the present invention. Any ordinary technician with common knowledge in the relevant technical field should be able to make some changes and modifications without departing from the spirit and scope of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A gas pipeline pressure regulating device, characterized in that: Include: A first sleeve, the interior of which is axially penetrated parallel to an axis, a first ring body is disposed inside the first sleeve, and at least one first penetration portion is provided between the outer periphery of the first ring body and the inner side wall of the first sleeve; a second sleeve, the interior of which is axially penetrated parallel to the axis, and one axial end of which is connected to an axial end of the first sleeve; a second ring body is arranged in the second sleeve, and at least one second penetration portion is provided between the outer periphery of the second ring body and the inner side wall of the second sleeve; an annular flange is arranged on the outer periphery of the second ring body, and the annular flange protrudes a height toward the first sleeve in the axis direction; the first sleeve, the second sleeve, the first ring body and the second ring body are coaxial, and a first distance is provided between the first ring body and the second ring body in the axis direction; A piston assembly, comprising a piston disc, wherein the outer diameter of the piston disc is greater than the inner diameter of the annular flange, the piston disc has a thickness in the axial direction, the thickness is less than the first distance, the piston disc has a first surface and a second surface opposite to each other in the axial direction, the piston disc is provided with at least one through hole penetrating the first surface and the second surface, a first rod body is protruding from the first surface, and a second rod body is protruding from the second surface, the piston disc is arranged between the first sleeve and the second sleeve, the first rod body is penetrated through the first ring body, the second rod body is penetrated through the second ring body, and the first sleeve, the second sleeve, the first ring body, the second ring body, the first rod body and the second rod body are coaxial; and An elastic member is sleeved on the outer periphery of the first rod body, one end of which is connected to the first rod body, and the other end of which is against the first ring body, and the elastic direction of the elastic member is parallel to the axis; when the piston assembly is subjected to an external force parallel to the axis, the elastic member can be compressed and drive the piston disc of the piston assembly to abut against the annular flange so that the first sleeve and the second sleeve are connected through the through hole of the piston disc; when the external force disappears, the piston disc separates from the annular flange, so that the first sleeve and the second sleeve are restored to be connected internally.

2. The gas pipeline pressure regulating device according to claim 1, characterized in that: The first sleeve has a first end and a second end that are opposite to each other and connected to each other in the axial direction, and the second sleeve has a third end and a fourth end that are opposite to each other and connected to each other in the axial direction, and a thread that can be screwed together is provided between the third end and the second end, so that the first sleeve and the second sleeve are connected to each other.

3. The gas pipeline pressure regulating device according to claim 2, characterized in that: The second end portion is provided with an internal thread, the third end portion is provided with an external thread, and the third end portion is screwed into the second end portion.

4. The gas pipeline pressure regulating device according to claim 2, characterized in that: The first end is provided with an internal thread for threadingly engaging with an air inlet pipeline of a gas container, and the fourth end is provided with an external thread for threadingly engaging with an air outlet pipeline of a gas-using device.

5. The gas pipeline pressure regulating device according to claim 1, characterized in that: A buckle ring is disposed at the end of the first rod body, and opposite ends of the elastic member in the elastic direction are respectively against the buckle ring and the first ring body.

6. The gas pipeline pressure regulating device according to claim 1, characterized in that: The piston disc has a neck with a seal disposed on the neck. The outer diameter of the seal is greater than the inner diameter of the annular flange. When the piston assembly is subjected to an external force parallel to the axis, the seal of the piston assembly can be driven to abut against the annular flange.

7. The gas pipeline pressure regulating device according to claim 6, characterized in that: The material of the seal is rubber.

8. The gas pipeline pressure regulating device according to claim 1, characterized in that: The first rod body is inserted into the first ring body in a loose fit, and the second rod body is inserted into the second ring body in a loose fit.

9. The gas pipeline pressure regulating device according to claim 1, characterized in that: The outer periphery of the first ring body is provided with a plurality of first connecting arms, which are connected to the inner wall of the first sleeve. At least one first penetration portion is formed between the plurality of first connecting arms, so that the interior of the first sleeve is axially penetrated in the axial direction.

10. The gas pipeline pressure regulating device according to claim 1, characterized in that: The outer periphery of the second ring body is provided with a plurality of second connecting arms, which are connected to the inner wall of the second sleeve. At least one second penetration portion is formed between the plurality of second connecting arms, so that the interior of the second sleeve is axially penetrated parallel to the axis.

11. The gas pipeline pressure regulating device according to claim 1, characterized in that: The ratio of the aperture of the through hole to the inner diameter of the annular flange is between 1:5 and 1:20.

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