CN115750834A - Pneumatic high-pressure valve - Google Patents
Pneumatic high-pressure valve Download PDFInfo
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- CN115750834A CN115750834A CN202211446669.4A CN202211446669A CN115750834A CN 115750834 A CN115750834 A CN 115750834A CN 202211446669 A CN202211446669 A CN 202211446669A CN 115750834 A CN115750834 A CN 115750834A
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Abstract
The invention discloses a pneumatic high-pressure valve, which comprises a valve body assembly and a cylinder assembly which are arranged in parallel; the valve body component comprises a valve body part, a valve cage part and a pneumatic valve shaft, and the valve cage part is arranged between the valve body part and the air cylinder component; and the pneumatic valve shaft penetrates through the valve body piece and the valve cage piece respectively to be connected to the air cylinder assembly, air ports are arranged on two sides of the valve body piece respectively, one of the air ports is communicated with the valve cage piece, and a plug matched with the valve cage piece is arranged on the pneumatic valve shaft. By adopting the valve cage type design, the invention greatly reduces the parts required by the valve, reduces the volume of the valve, reduces the manufacturing cost, ensures the reliable use of a high-pressure environment by using the balanced type valve core, and reduces the gas consumption and the pressure of the instrument.
Description
Technical Field
The invention belongs to the technical field of high-pressure gas filling and application, and particularly relates to a pneumatic high-pressure valve.
Background
In industrial production, various industrial pure gases, high purity gases and mixed gases are often applied, and in production, transportation and application scenes of various industrial pure gases, high purity gases and mixed gases, the gases are necessarily compressed to reduce transportation and storage costs of the gases.
In order to reduce the labor intensity and improve the operation safety, in the prior art, the automatic control of the high-pressure gas comprises the following steps: filling, transporting, using and pressure regulating become the necessary methods for gas industry application. The valve that has now needs a great drive cylinder to realize opening and close of high pressure valve (this has brought the bulky of valve), on the other hand lacks reliable high pressure oxygen valve.
Disclosure of Invention
The invention aims to provide a pneumatic high-pressure valve, which adopts a cage type design, greatly reduces parts required by the valve, reduces the volume of the valve, reduces the manufacturing cost, ensures the reliable operation of a high-pressure environment by using a balanced valve core, and simultaneously reduces the use and pressure of instrument gas.
In order to achieve the purpose, the invention adopts the technical scheme that:
a pneumatic high-pressure valve comprises a valve body assembly and a cylinder assembly which are arranged in parallel; the valve body component comprises a valve body part, a valve cage part and a pneumatic valve shaft, and the valve cage part is arranged between the valve body part and the air cylinder component; and the pneumatic valve shaft penetrates through the valve body piece and the valve cage piece respectively to be connected to the air cylinder assembly, air ports are arranged on two sides of the valve body piece respectively, one of the air ports is communicated with the valve cage piece, and a plug matched with the valve cage piece is arranged on the pneumatic valve shaft.
Further, the air cylinder assembly comprises an air cylinder body, an air cylinder base and an air cylinder upper cover, and an air cylinder piston is arranged in the air cylinder body.
Furthermore, inflation ports are arranged in the cylinder base and the cylinder upper cover, a sealed cabin is formed between the cylinder base and the cylinder piston, and the inflation ports in the cylinder base and the cylinder upper cover are respectively communicated with the sealed cabin.
Further, a shaft sleeve is arranged between the cylinder base and the valve cage piece.
Further, a screw rod piece is connected in the cylinder piston, and one end of the screw rod piece is connected to the tail end of the pneumatic valve shaft.
Furthermore, the cylinder base, the cylinder upper cover and the contact part of the cylinder piston and the cylinder body are all provided with sealing O-shaped rings.
Furthermore, the inner side surfaces of the cylinder base and the cylinder upper cover are respectively provided with a spring seat, and a return spring is arranged between the cylinder base and the cylinder piston or between the cylinder upper cover and the cylinder piston.
Furthermore, an air cavity is formed in the valve cage member, an axial port and a longitudinal port are respectively formed in the air cavity in the axial direction and the longitudinal direction of the pneumatic valve and are respectively communicated with one of the air ports on the valve member, and the axial port is matched with the plug on the pneumatic valve shaft.
Furthermore, a limit ring is further arranged on the pneumatic valve shaft.
Further, the diameter of the limiting ring is larger than the through hole in the bottom of the valve cage.
Compared with the prior art, the invention has the advantages that: firstly, the parallel type valve core design structure of the cylinder assembly and the valve body assembly in parallel is adopted, the cylinder diameter of the driving cylinder can be effectively reduced, the manufacturing cost is reduced, and the parallel type valve core design structure is more suitable for filling high-pressure pure oxygen.
Secondly, the invention adopts the arrangement of the valve cage piece to effectively reduce the complexity of the internal structure, also realizes the foolproof installation and connection design, the air ports on the two sides of the valve body piece can be used as air inlets or air outlets, thereby reducing the requirement on the safety position, and is connected with the air inlet pipeline or the air outlet pipeline, the air inlet or the air outlet at different positions is carried out in the corresponding air cylinder component to control the movement of the pneumatic valve shaft in the valve cage piece, and the opening and the closing are carried out by utilizing the plug.
And the structures at two ends of the cylinder piston in the cylinder assembly are designed in a mirror image manner, the inner side surfaces of the cylinder base and the cylinder upper cover are respectively provided with a spring seat, the forward and reverse installation can be realized, and the conversion between a normally open valve and a normally closed valve is realized through springs arranged at different positions.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a pneumatic high-pressure valve provided by the invention.
Fig. 2 is a sectional view of fig. 1.
Reference numerals are as follows: the sealing structure comprises a valve body component 1, a cylinder component 2, a pneumatic valve shaft 3, a plug 4, a valve cage 5, a gas port 6, a shaft sleeve 7, an axial port 8, a longitudinal port 9, a charging port 10, a cylinder base 11, a cylinder body 12, a cylinder piston 13, a cylinder upper cover 14, a return spring 15, a screw rod 16, a sealing O-shaped ring 17 and a sealing cabin 18.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the terms are only used for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical", "suspended", etc., when appearing, do not require that the components be absolutely horizontal or suspended, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
It should be noted that the features of the embodiments of the present invention may be combined with each other without conflict.
As shown in fig. 1-2, the pneumatic high-pressure valve comprises a valve body assembly 1 and an air cylinder assembly 2 which are arranged in parallel; the valve body component 1 comprises a valve body part, a valve cage part 5 and a pneumatic valve shaft 3, and the valve cage part 5 is arranged between the valve body part and the cylinder component 2; and the pneumatic valve shaft 3 respectively penetrates through the valve body part and the valve cage part 5 to be connected to the cylinder assembly 2, air ports 6 are respectively arranged on two sides of the valve body part, one of the air ports 6 is communicated with the valve cage part 5, and a plug 4 matched with the valve cage part 5 is arranged on the pneumatic valve shaft 3.
Compared with the prior art, in the original high-pressure oxygen filling, the filling pressure of oxygen is generally 30Mpa or above, the higher the pressure is, the larger the cylinder diameter of the driving cylinder is, the complex connection structure between the driving cylinder and the opening and closing valve is, the high cost is achieved, and the more the instrument gas (filled into the driving cylinder) is required to be driven to open and close. In the invention, the cylinder component 2 and the valve component are designed to be parallel, the opening and the closing are carried out through the movement of the pneumatic valve shaft 3 connected between the cylinder component and the valve component, and the stressed area of a piston in a driving cylinder is effectively reduced through a direct-pulling and direct-contracting mode, so that the cylinder diameter of the driving cylinder is effectively reduced. In addition, the invention effectively realizes the fool-type installation design, on one hand, the air port 6 of the valve component can realize positive and negative installation, and on the other hand, the piston and the spring can also realize positive and negative installation, so that the compatibility of the whole system is higher.
The cylinder assembly 2 comprises a cylinder body 12, a cylinder base 11 and a cylinder upper cover 14, wherein a cylinder piston 13 is arranged in the cylinder body 12. Inflation ports 10 are arranged in the cylinder base 11 and the cylinder upper cover 14, a sealed cabin is formed between the cylinder base 11 and the cylinder piston 13 and on the supports of the cylinder upper cover 14 and the cylinder piston 13, and the inflation ports 10 in the cylinder base 11 and the cylinder upper cover 14 are respectively communicated with the sealed cabin. 18, the cylinder piston 13 can move to different positions through the inflation ports 10 at different positions in the state of being inflated with instrument gas, and the cylinder piston compresses or stretches against the spring respectively to push the plug 4 on the pneumatic valve shaft 3 to be far away from or close to the gas inlet or the gas outlet in the axial direction of the valve cage 5, so that the opening and closing functions are realized respectively.
A shaft sleeve 7 is arranged between the cylinder base 11 and the valve cage 5.
A screw rod piece 16 is connected in the cylinder piston 13, and one end of the screw rod piece 16 is connected to the tail end of the pneumatic valve shaft 3. And sealing O-shaped rings 17 are arranged at the contact positions of the cylinder base 11, the cylinder upper cover 14 and the cylinder piston 13 with the cylinder body 12.
Spring seats are arranged on the inner side surfaces of the cylinder base 11 and the cylinder upper cover 14, and a return spring 15 is arranged between the cylinder base 11 and the cylinder piston 13 or between the cylinder upper cover 14 and the cylinder piston 13.
An air cavity is formed in the valve cage member 5, an axial port 8 and a longitudinal port 9 are respectively arranged on the air cavity in the axial direction and the longitudinal direction of the pneumatic valve shaft 3 and are respectively communicated with one of the air ports 6 on the valve member, and the axial port 8 is matched with the plug 4 on the pneumatic valve shaft 3. The axial port 8 and the longitudinal port 9 can be used as an air inlet and an air outlet, and the connection positions of the air inlet and the air outlet can be interchanged, so that the compatibility of the whole system is enhanced.
The pneumatic valve shaft 3 is also provided with a limit ring. The diameter of the limiting ring is larger than the through hole at the bottom of the valve cage 5.
In particular use, the connection conditions in the pre-installation according to the invention can be divided into different states:
the first implementation mode comprises the following steps:
the valve cage 5 is selected as an air inlet in the axial direction, the valve cage 5 is selected as an air outlet in the longitudinal direction, and the valve is selected as an air inlet mode under the valve, and a spring is selected and arranged between the cylinder upper cover 14 and the cylinder piston 13. The valve may also be selected to be initially in a normally closed or normally open state.
Firstly, the maximum lifting force F1 of the gas caused by the air inlet under the selector valve and the gas pressure difference is determined, and the specific calculation is as follows:
f1= (P1-P2) ((D2/2) ^2- (D1/2) ^ 2) × (formula one)
Wherein, P1 is the air inlet valve limit working pressure, P2 is the air outlet valve limit working pressure, D1 is the pneumatic valve shaft 3 maximum diameter, D2 is the sealing surface maximum diameter.
In a normally open state, the valve is in an initial state of opening, the plug 4 is separated from the valve cage 5, and after the high-pressure inflation is finished, the plug 4 needs to be abutted to an air inlet of the valve cage 5.
After the inflation is completed, the plug 4 needs to be pushed to the air inlet of the cage 5, and a seal is formed by the plug 4 and the air inlet of the cage 5. At this time, the main function of the spring is to reopen the valve after the air in the cylinder is discharged. The minimum spring force Fk to be provided by the selected spring is calculated and determined according to the spring coefficient value K and the compression length value Lx of the selected spring.
Naturally, in order to ensure that the closure can be performed, it is also necessary to provide a minimum pretensioning pressure P4, which then needs to be provided:
f2= P4 ((D2/2) ^2- (D1/2) ^ pi (formula two)
When the plug 4 is closed, instrument air is introduced through the air charging port 10 on the cylinder upper cover 14, the piston is pushed to move towards the cylinder base 11, and when the plug 4 abuts against the air inlet of the valve cage 5, the spring is in a stretching state. The thrust force F3 required to be provided by the whole cylinder at this time is definitely determined by the following formula III
F3= F1+ F2+ F4+ K (Lx + L) (formula three)
Where L is the maximum stroke of the valve stem and F4 is the cylinder and valve stem friction. Therefore, the minimum instrument gas pressure P3 required for the cylinder can be calculated:
p3= F3/((D3/2) ^2 x pi) (formula four)
And the resulting P3 value is much less than the minimum instrument gas pressure required in the conventional art.
On the contrary, in a normally closed state, the plug 4 on the pneumatic valve shaft 3 initially abuts against the air inlet position of the valve cage 5, and when the valve enters a working state, the gauge gas is filled into a sealed space between the cylinder base 11 and the cylinder piston 13 by inflating the inflation inlet 10 in the direction of the cylinder base 11, and the cylinder piston 13 is pushed to compress the spring and enable the plug 4 to be separated from the air inlet of the valve cage 5, so that the air inlet and the air outlet can be communicated. At this moment, mainly reset through the spring force that the spring compression produced, then, at this moment, gaseous maximum lift force F1, minimum pretightning force are F2, cylinder and valve rod frictional force F4 keep unchanged with before, and the elasticity Fk that resets that the spring provided then needs to satisfy: fk = F1+ F2+ F4, so that a suitable spring is selected.
The second embodiment:
the selection valve cage 5 is used as an air outlet in the axial direction, the valve cage 5 is used as an air inlet in the longitudinal direction, the selection valve upper air inlet mode is realized, and a spring is selected and arranged between the cylinder upper cover 14 and the cylinder piston 13. The valve may also be selected to be initially in a normally closed or normally open state.
Different from the air inlet under the valve, the air inlet and the air outlet of the valve cage member 5 are exchanged, the air inlet mode on the valve is in a normally closed state, the pressure on the valve is greater than the pressure under the valve, the thrust provided by the air cylinder needs to overcome the spring force, and the pneumatic valve shaft 3 is pulled up to ensure the opening of the valve due to the pressing force formed by the air pressure difference after the air pressure is changed.
Similarly, when air is fed into the valve, if a normally open state is selected, the pressing force formed by air pressure difference is not changed, and the minimum spring force of the selected spring can overcome the pressing force formed by the friction force F4 between the cylinder and the valve rod and the air pressure difference, so that the model selection can be completed.
And the air pressure of the cylinder instrument required by air intake on the valve is adopted under the pressure condition of 35Mpa, and the driving air pressure obtained by calculation by adopting the mode provided by the invention is less than 0.6Mpa and is far less than the pressure required by the traditional cylinder.
In conclusion, the invention is flexible and changeable in whole, can realize the transposition of the position of the connecting pipe, and has the advantages of more convenient later installation, low maintenance cost and short maintenance period.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. The utility model provides a pneumatic high pressure valve which characterized in that: comprises a valve body component (1) and a cylinder component (2) which are arranged in parallel; the valve body assembly (1) comprises a valve body piece, a valve cage piece (5) and a pneumatic valve shaft (3), wherein the valve cage piece (5) is arranged between the valve body piece and the cylinder assembly (2); and the pneumatic valve shaft (3) penetrates through the valve body part and the valve cage part (5) respectively to be connected to the air cylinder assembly (2), air ports (6) are arranged on two sides of the valve body part respectively, one of the air ports (6) is communicated with the valve cage part (5), and a plug (4) matched with the valve cage part (5) is arranged on the pneumatic valve shaft (3).
2. The pneumatic high pressure valve of claim 1, wherein: the air cylinder assembly (2) comprises an air cylinder body (12), an air cylinder base (11) and an air cylinder upper cover (14), and an air cylinder piston (13) is arranged in the air cylinder body (12).
3. The pneumatic high pressure valve of claim 2, wherein: the air cylinder is characterized in that inflation ports (10) are arranged in the air cylinder base (11) and the air cylinder upper cover (14), a sealed cabin is formed between the air cylinder base (11) and the air cylinder piston (13) and supports of the air cylinder upper cover (14) and the air cylinder piston (13), and the inflation ports (10) in the air cylinder base (11) and the air cylinder upper cover (14) are respectively communicated with the sealed cabin (18).
4. The pneumatic high pressure valve of claim 2, wherein: and a shaft sleeve (7) is arranged between the cylinder base (11) and the valve cage piece (5).
5. The pneumatic high pressure valve of claim 2, wherein: and a screw rod piece (16) is connected in the cylinder piston (13), and one end of the screw rod piece (16) is connected to the tail end of the pneumatic valve shaft (3).
6. The pneumatic high pressure valve of claim 2, wherein: and sealing O-shaped rings (17) are arranged at the contact positions of the cylinder base (11), the cylinder upper cover (14) and the cylinder piston (13) with the cylinder body (12).
7. The pneumatic high pressure valve of claim 2, wherein: the inner side surfaces of the cylinder base (11) and the cylinder upper cover (14) are respectively provided with a spring seat, and a return spring (15) is arranged between the cylinder base (11) and the cylinder piston (13) or between the cylinder upper cover (14) and the cylinder piston (13).
8. The pneumatic high pressure valve of claim 1, wherein: an air cavity is formed in the valve cage member (5), axial ports (8) and longitudinal ports (9) are respectively arranged on the air cavity in the axial direction and the longitudinal direction of the pneumatic valve shaft (3) and are respectively communicated with one of the air ports (6) on the valve member, and the axial ports (8) are matched with the plugs (4) on the pneumatic valve shaft (3).
9. The pneumatic high pressure valve of claim 1, wherein: and a limiting ring is further arranged on the pneumatic valve shaft (3).
10. The pneumatic high pressure valve of claim 9, wherein: the diameter of the limiting ring is larger than the through hole at the bottom of the valve cage (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2022109318813 | 2022-08-04 | ||
| CN202210931881 | 2022-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115750834A true CN115750834A (en) | 2023-03-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211446669.4A Pending CN115750834A (en) | 2022-08-04 | 2022-11-18 | Pneumatic high-pressure valve |
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| Country | Link |
|---|---|
| CN (1) | CN115750834A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116792511A (en) * | 2023-08-23 | 2023-09-22 | 四川新途流体控制技术有限公司 | Compact axial-flow type pneumatic valve for high-pressure gas |
| CN117419182A (en) * | 2023-12-18 | 2024-01-19 | 四川新途流体控制技术有限公司 | High-pressure pneumatic valve and fluid control system |
-
2022
- 2022-11-18 CN CN202211446669.4A patent/CN115750834A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116792511A (en) * | 2023-08-23 | 2023-09-22 | 四川新途流体控制技术有限公司 | Compact axial-flow type pneumatic valve for high-pressure gas |
| CN116792511B (en) * | 2023-08-23 | 2023-10-24 | 四川新途流体控制技术有限公司 | Compact axial-flow type pneumatic valve for high-pressure gas |
| CN117419182A (en) * | 2023-12-18 | 2024-01-19 | 四川新途流体控制技术有限公司 | High-pressure pneumatic valve and fluid control system |
| CN117419182B (en) * | 2023-12-18 | 2024-03-01 | 四川新途流体控制技术有限公司 | High-pressure pneumatic valve and fluid control system |
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