CN212928868U - High-pressure high-reliability anti-flutter one-way valve - Google Patents
High-pressure high-reliability anti-flutter one-way valve Download PDFInfo
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- CN212928868U CN212928868U CN202021666134.4U CN202021666134U CN212928868U CN 212928868 U CN212928868 U CN 212928868U CN 202021666134 U CN202021666134 U CN 202021666134U CN 212928868 U CN212928868 U CN 212928868U
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Abstract
The utility model discloses a high-pressure high-reliability anti-flutter check valve belongs to the technical field of check valve manufacturing, and it includes valve body, main valve core, main valve seat and return spring, and the valve body sets up for the cavity, and the rigid coupling can be dismantled in the one end of valve body to the main valve seat, and the main valve core is arranged in the valve body inside and with valve body sliding contact, and return spring arranges in between main valve core and the main valve seat, and return spring's both ends link to each other its characterized in that with main valve core, main valve seat butt respectively: the one end that main valve seat was kept away from to the valve body inner wall is coaxial to have seted up the standing groove, and the joint is provided with the damping circle in the standing groove, and the damping snare is established on main valve element's circumference face and is linked to each other with main valve element butt, and elastic system's damping characteristic is adjusted to the frictional force through the damping circle, realizes keeping apart the vibration frequency of main valve element and the pneumatic frequency of gas circuit system to the response of mistake frequently of pneumatic response frequency, the utility model discloses have the effect of solving check valve in use system coupling resonance problem.
Description
Technical Field
The utility model relates to a technical field of check valve manufacturing, in particular to high-pressure high-reliability anti-flutter check valve.
Background
The check valve is widely applied to the field of aerospace and is used for on-off and isolation of gas circuits. The stability of the opening of the air passage in the ground test and the flying process of the carrier is significant to the flying, the influence of the flutter of the check valve on the stability of the system is avoided as much as possible in use, and the flutter prevention design of the check valve is always an important characteristic of the structural design in the aerospace field.
The check valve structure is mostly a spring oscillator structure, and the main valve core is the fixed mass system, and the motion direction does not have sliding friction. When the check valve is used, the main valve core is opened under the action of gas force, and after the gas is removed, the main valve core is returned and closed under the action of the spring force and the reverse gas force.
After the existing one-way valve is designed, an elastic system and the quality of the one-way valve are fixed, and under the action of gas, when the disturbance frequency of the gas flow is coupled with the natural frequency of the one-way valve, the main valve core of the one-way valve is easily excited, and even the frequency coupling resonance of the whole gas circuit causes the structural damage of the gas circuit system.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a high reliable check valve that prevents shimmys to the not enough that prior art exists, the purpose of the utility model is to reach the effect of solving check valve in use system coupling resonance problem.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a high-pressure high-reliability anti-flutter check valve, includes valve body, main valve core, main valve seat and return spring, and the valve body sets up for the cavity, and the rigid coupling can be dismantled in the one end of valve body to the main valve seat, the main valve core arrange the valve body inside and with valve body sliding contact, return spring arranges in between main valve core and the main valve seat, and return spring's both ends link to each other its characterized in that with main valve core, main valve seat butt respectively: the valve body inner wall is kept away from the coaxial standing groove of seting up of the one end of main valve seat, and the joint is provided with the damping circle in the standing groove, and the damping ring cover is established on the circumference face of main valve core and is continuous with main valve core butt.
By adopting the technical scheme, gas is introduced from the inlet end of the valve body and acts on the main valve core, the main valve core overcomes the acting force of the return spring, the return spring is compressed and moves towards the direction close to the main valve seat, and the inlet and the outlet of the valve body are communicated; after gas stops being introduced, the main valve core slides towards the direction far away from the main valve seat under the action of the return spring and gas at the outlet end of the valve body, the inlet and the outlet of the valve body are isolated, so that the whole valve body is in a closed state, the outer wall of the main valve core and the inner wall of the damping ring are always in a close fit state in the moving process of the main valve core, the damping characteristic of the elastic system is adjusted through the friction force of the damping ring, the cross-frequency response of the pneumatic response frequency is realized, the vibration frequency of the main valve core is isolated from the pneumatic frequency of the gas circuit system, and the effect of solving the system coupling resonance problem of the check valve in use is achieved.
The present invention may be further configured in a preferred embodiment as: the circumferential surface of the main valve core is provided with vent holes, and the vent holes penetrate through the side wall of the main valve core.
By adopting the technical scheme, the main valve core is matched with the valve body for use, when the inlet and the outlet of gas need to be communicated, the gas pushes the main valve core to move towards the direction close to the main valve seat, and the gas passes through the vent hole and the gap between the main valve core and the valve body and then is communicated with the outlet end of the valve body; after the gas stops being input, the thrust of the gas disappears, the restoring force of the return spring and the acting force of the gas at the outlet end of the valve body enable the main valve core to slide towards the direction far away from the main valve seat, the inlet and the outlet of the valve body are isolated, the whole valve body is in a closed state, and the high sealing effect of the one-way valve is improved.
The present invention may be further configured in a preferred embodiment as: the vent hole is waist type poroid setting, and the vent hole is provided with a plurality ofly, and a plurality of vent holes set up around the circumference face interval of main valve core.
Through adopting above-mentioned technical scheme, set up the air vent into waist type hole, increase the aperture of air vent, the inside gaseous outside loss of main valve core of being convenient for and carry to the exit end, improve the result of use of check valve, and the air vent is provided with a plurality ofly around the even interval of the circumference face of main valve core, under the prerequisite of further improvement check valve effect of ventilating, still improve the stability of main valve core when the inside slip of valve body, the result of use of reinforcing check valve.
The present invention may be further configured in a preferred embodiment as: the inner wall of the valve body is provided with a groove, an universal plug ring is clamped in the groove, and the universal plug ring is sleeved on the circumferential surface of the main valve core and is connected with the main valve core in an abutting mode.
By adopting the technical scheme, the universal plug ring is sleeved on the circumferential surface of the main valve core, the inner wall of the universal plug ring is closely attached to the outer wall of the main valve core, the friction force of the universal plug ring is used for adjusting the frequency offset response of the main valve core caused by the pneumatic response frequency in the sliding process, and the vibration frequency of the main valve core is isolated from the pneumatic frequency of the gas circuit system by matching with the damping ring, so that the effect of solving the system coupling resonance problem of the check valve in use is achieved; meanwhile, the universal plug ring has a good sealing effect on a workpiece used in a matched mode, and the high sealing performance of the check valve in use is further improved.
The present invention may be further configured in a preferred embodiment as: the valve body is internally provided with a valve seat, and the valve seat is in threaded connection with the inner wall of the valve body.
Through adopting above-mentioned technical scheme, at the inside disk seat that sets up of valve body, the sealed effect to main valve core is strengthened from the inside of valve body to the disk seat, further improves the stability of main valve core in the use, and the general stopper ring of disk seat cooperation forms the double-pass to the valve body and seals, realizes the high reliable sealed effect under the high-pressure operating mode.
The present invention may be further configured in a preferred embodiment as: the main valve core is arranged in an inclined plane at the position close to the flooding plug ring.
Through adopting above-mentioned technical scheme, the position department that main valve core is close to general stopper ring is the inclined plane setting, and when letting in gas to the valve body in, gas in the main valve core passes the air vent and carries to the exit end along the clearance between main valve core and the valve body, and the inclined plane setting of main valve core makes things convenient for gas to pass through, reduces the effect of blockking to gas, improves main valve core at the inside gliding high efficiency of valve body, further strengthens the effect of check valve's use.
The present invention may be further configured in a preferred embodiment as: a limiting groove is formed in one side, close to the valve seat, of the main valve core, and the return spring is inserted into the limiting groove and clamped with the limiting groove.
Through adopting above-mentioned technical scheme, the spacing inslot of arranging return spring one end near main valve core in, the spacing groove has certain spacing effect to return spring, strengthens being connected between return spring and the main valve core, improves return spring's stability when using, strengthens main valve core's the effect that resets, further strengthens check valve's sealing performance.
The present invention may be further configured in a preferred embodiment as: the main valve seat is inserted in the valve body and is connected with the valve body through threads.
Through adopting above-mentioned technical scheme, main valve seat insert locate in the valve body and with valve body threaded connection, make things convenient for the installation and the dismantlement of main valve seat and valve body, when return spring in the valve body takes place to damage, loosen main valve seat soon and change return spring, ensure the normal use of check valve, improve the convenience of changing return spring simultaneously.
To sum up, the utility model discloses following beneficial effect has:
1. the damping ring is arranged in the valve body, and the friction force of the damping ring adjusts the damping characteristic of the elastic system, so that the problem of system coupling resonance of the check valve in use is solved;
2. by arranging the universal plug ring, the universal plug ring is matched with the damping ring to isolate the vibration frequency of the main valve core from the pneumatic frequency of the gas circuit system, so that the problem of system coupling resonance of the check valve in use is solved; meanwhile, the universal plug ring has a good sealing effect on a workpiece used in a matched mode, and the high sealing performance of the check valve in use is further improved;
3. the valve seat is arranged on the inner side of the valve body and matched with the universal plug ring to form double sealing for the valve body, so that high-reliability sealing under a high-pressure working condition is realized.
Drawings
Fig. 1 is a schematic diagram of the explosion structure of the present invention;
fig. 2 is a schematic sectional structure of the present invention;
fig. 3 is an enlarged schematic view at a in fig. 2.
In the figure, 1, a valve body; 2. a main valve element; 21. a vent hole; 22. a groove; 23. a limiting groove; 3. a main valve seat; 4. a return spring; 5. a placement groove; 6. a damping ring; 7. a stopper ring; 8. a valve seat.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
With reference to fig. 1 and 2, the high-pressure high-reliability flutter-proof check valve disclosed by the present invention comprises a valve body 1, a main valve element 2, a main valve seat 3 and a return spring 4, wherein the valve body 1 is arranged in a cavity, the main valve seat 3 is detachably and fixedly connected to one end of the valve body 1, the main valve element 2 is arranged inside the valve body 1 and is slidably connected with the valve body 1, the return spring 4 is arranged between the main valve element 2 and the main valve seat 3, and two ends of the return spring 4 are respectively connected with the main valve element 2 and the main valve seat 3 in an abutting manner, a placement groove 5 is coaxially arranged at one end of the inner wall of the valve body 1, which is far away from the main valve seat 3, a damping ring 6 is arranged in the placement groove 5 in a clamping manner, the damping ring 6 is sleeved on the circumferential surface of the main valve element 2 and is connected with the main valve element 2 in an abutting manner, the damping characteristic of an elastic system is adjusted by the friction, the effect of solving the problem of system coupling resonance in the use of the check valve is achieved.
Referring to fig. 1, a vent hole 21 is formed in the circumferential surface of a main valve element 2, the vent hole 21 penetrates through the side wall of the main valve element 2, the main valve element 2 is used in cooperation with a valve body 1, when an inlet and an outlet of gas need to be communicated, the gas pushes the main valve element 2 to move towards a direction close to a main valve seat 3, and the gas passes through the vent hole 21 and a gap between the main valve element 2 and the valve body 1 and then is communicated with an outlet end of the valve body 1; after the gas stops being input, the thrust of the gas disappears, the restoring force of the return spring 4 and the acting force of the gas at the outlet end of the valve body 1 enable the main valve element 2 to slide towards the direction far away from the main valve seat 3, the inlet and the outlet of the valve body 1 are isolated, the whole valve body 1 is in a closed state, and the high sealing effect of the one-way valve is improved; air vent 21 is the setting of waist type poroid, increases air vent 21's aperture, and the inside gaseous outside loss of main valve element 2 of being convenient for and carry to the exit end improves the result of use of check valve, and air vent 21 is provided with a plurality ofly around main valve element 2's even interval of circumference face, further improves under the prerequisite of check valve effect of ventilating, still improves the stability of main valve element 2 when 1 inside slip of valve body, strengthens the result of use of check valve.
With reference to fig. 1 and 2, the position of main valve element 2 close to the universal plug ring 7 is arranged in an inclined plane, when gas is introduced into the valve body 1, the gas in the main valve element 2 passes through the vent hole 21 and is conveyed to the outlet end along the gap between the main valve element 2 and the valve body 1, the inclined plane of the main valve element 2 is arranged to facilitate the gas to pass through, the blocking effect on the gas is reduced, the sliding efficiency of the main valve element 2 in the valve body 1 is improved, and the use effect of the check valve is further enhanced.
With reference to fig. 2 and 3, a groove 22 is formed in the inner wall of the valve body 1, an extensive plug ring 7 is arranged in the groove 22 in a clamping manner, the extensive plug ring 7 is sleeved on the circumferential surface of the main valve element 2 and connected with the main valve element 2 in an abutting manner, the inner wall of the extensive plug ring 7 is closely attached to the outer wall of the main valve element 2, the frequency-staggered response of the main valve element 2 caused by the pneumatic response frequency in the sliding process is adjusted through the friction force of the extensive plug ring 7, the vibration frequency of the main valve element 2 is isolated from the pneumatic frequency of the gas circuit system by matching with the damping ring 6, and the effect of solving the problem of system coupling resonance of the check; meanwhile, the universal plug ring 7 has a good sealing effect on a workpiece used in a matched mode, and the high sealing performance of the check valve in use is further improved.
Combine fig. 2 and fig. 3, valve body 1 is inside to be provided with disk seat 8, disk seat 8 and 1 inner wall threaded connection of valve body, disk seat 8 strengthens the sealed effect to main valve element 2 from the inside of valve body 1, further improve the stability of main valve element 2 in the use, disk seat 8 cooperates general cock ring 7 and forms the double-pass to valve body 1 and seal, the variable frequency rate response of case to disturbance aerodynamic force has been realized, the frequency of main valve element 2 is kept apart with the motion frequency of gas circuit system, thereby restrain the coupling vibration, the steady response of gas circuit system has been realized, play the protection to entire system. Meanwhile, the high-pressure and high-reliability sealing of the one-way valve is realized through the double-channel sealing structure.
With reference to fig. 2 and 3, a limiting groove 23 is formed in one side of the main valve element 2 close to the valve seat 8, the return spring 4 is inserted into the limiting groove 23 and clamped with the limiting groove 23, one end of the return spring 4 close to the main valve element 2 is placed in the limiting groove 23, the limiting groove 23 has a certain limiting effect on the return spring 4, connection between the return spring 4 and the main valve element 2 is strengthened, stability of the return spring 4 in use is improved, the resetting effect of the main valve element 2 is enhanced, and sealing performance of the check valve is further enhanced; main valve seat 3 inserts and locates in the valve body 1 and links to each other with 1 screw thread of valve body, makes things convenient for the installation and the dismantlement of main valve seat 3 and valve body 1, and when return spring 4 in the valve body 1 took place to damage, the main valve seat 3 of unscrewing and change return spring 4 ensure the normal use of check valve, improve the convenience of changing return spring 4 simultaneously.
The implementation principle of the embodiment is as follows: sleeving a damping ring 6 on the circumferential surface of a main valve element 2, sleeving a universal plug ring 7 on the main valve element 2, connecting a valve seat 8 in the valve body 1 in a threaded manner, introducing gas from the inlet end of the valve body 1, wherein the gas acts on the main valve element 2, the main valve element 2 overcomes the acting force of a return spring 4, and compresses the return spring 4 and moves towards the direction close to a main valve seat 3, so that a vent hole 21 on the main valve element 2 is communicated with an outlet, the one-way valve is normally used, the damping ring 6, the universal plug ring 7 and the valve seat 8 are matched with each other, the variable frequency response of the main valve element 2 to disturbance aerodynamic force is realized, the frequency of the main valve element 2 is isolated from the motion frequency of a gas path system, the coupling vibration is inhibited, the stable response of the gas path system is realized, and; after stopping letting in gas, under the action of return spring 4 and the gas at the outlet end of valve body 1, main valve element 2 slides towards the direction far away from main valve seat 3, and the inlet and the outlet of valve body 1 are isolated, so that whole valve body 1 is in a closed state.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a high-pressure reliable prevent check valve that shimmys, including valve body (1), main valve core (2), main valve seat (3) and return spring (4), valve body (1) sets up for the cavity, the rigid coupling can be dismantled in the one end of valve body (1) in main valve seat (3), main valve core (2) are arranged in valve body (1) inside and with valve body (1) sliding contact, return spring (4) are arranged in between main valve core (2) and main valve seat (3), and return spring (4) the both ends respectively with main valve core (2), main valve seat (3) butt links to each other, its characterized in that: the valve body (1) inner wall is kept away from the coaxial standing groove (5) of having seted up of one end of main valve seat (3), and the joint is provided with damping circle (6) in standing groove (5), and damping circle (6) cover is established on the circumferential surface of main valve core (2) and is linked to each other with main valve core (2) butt.
2. The high-pressure high-reliability anti-flutter one-way valve according to claim 1, characterized in that: the main valve core (2) is provided with a vent hole (21) on the circumferential surface, and the vent hole (21) penetrates through the side wall of the main valve core (2).
3. The high-pressure high-reliability anti-flutter one-way valve according to claim 2, characterized in that: the vent holes (21) are arranged in a waist-shaped hole shape, the vent holes (21) are arranged in a plurality, and the vent holes (21) are arranged at intervals around the circumferential surface of the main valve core (2).
4. The high-pressure high-reliability anti-flutter one-way valve according to claim 1, characterized in that: the inner wall of the valve body (1) is provided with a groove (22), an universal plug ring (7) is clamped in the groove (22), and the universal plug ring (7) is sleeved on the circumferential surface of the main valve core (2) and connected with the main valve core (2) in an abutting mode.
5. The high-pressure high-reliability anti-flutter one-way valve according to claim 1, characterized in that: the valve body (1) is internally provided with a valve seat (8), and the valve seat (8) is in threaded connection with the inner wall of the valve body (1).
6. The high-pressure high-reliability anti-flutter one-way valve according to claim 4, characterized in that: the main valve core (2) is arranged in an inclined plane at the position close to the flooding plug ring (7).
7. The high-pressure high-reliability anti-flutter one-way valve according to claim 1, characterized in that: a limiting groove (23) is formed in one side, close to the valve seat (8), of the main valve core (2), and the return spring (4) is inserted into the limiting groove (23) and clamped with the limiting groove (23).
8. The high-pressure high-reliability anti-flutter one-way valve according to claim 1, characterized in that: the main valve seat (3) is inserted in the valve body (1) and is connected with the valve body (1) in a threaded manner.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021666134.4U CN212928868U (en) | 2020-08-11 | 2020-08-11 | High-pressure high-reliability anti-flutter one-way valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021666134.4U CN212928868U (en) | 2020-08-11 | 2020-08-11 | High-pressure high-reliability anti-flutter one-way valve |
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| Publication Number | Publication Date |
|---|---|
| CN212928868U true CN212928868U (en) | 2021-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021666134.4U Active CN212928868U (en) | 2020-08-11 | 2020-08-11 | High-pressure high-reliability anti-flutter one-way valve |
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| CN (1) | CN212928868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357409A (en) * | 2021-06-18 | 2021-09-07 | 沈阳航天新光集团有限公司 | Pneumatic check valve structure with adjustable case damping |
-
2020
- 2020-08-11 CN CN202021666134.4U patent/CN212928868U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113357409A (en) * | 2021-06-18 | 2021-09-07 | 沈阳航天新光集团有限公司 | Pneumatic check valve structure with adjustable case damping |
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