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CN-122014790-A - Damper capable of simultaneously realizing exhaust resistance and shock resistance of safety valve

CN122014790ACN 122014790 ACN122014790 ACN 122014790ACN-122014790-A

Abstract

The invention relates to a damper capable of simultaneously realizing exhaust of a safety valve and vibration resistance, which belongs to the technical field of dampers and comprises a cylinder body, an oil return piston and an oil storage tank which are sequentially distributed from inside to outside, wherein the rear end of the cylinder body is provided with a rear cylinder cover, the front end of the cylinder body is provided with a front cylinder cover, two ends of the oil storage tank are respectively and fixedly connected with the rear cylinder cover and the front cylinder cover in a sealing manner, the oil return piston is respectively and slidably connected with the oil storage tank and the cylinder body in a sealing manner, the oil return piston is elastically connected with the front cylinder cover, a piston rod is movably arranged on the front cylinder cover in a penetrating manner, a piston block is arranged in the cylinder body, the piston block is fixedly arranged at one end of the piston rod, the rear cylinder cover is provided with a first oil duct, and the cylinder body is provided with a through hole.

Inventors

  • CHEN HAO
  • JIN YUJIE
  • GAO WENMING
  • JIANG TAO
  • Weng Minxue
  • GUO CHENG
  • YOU XINYU
  • WANG LONGJIN
  • HE ZEXIANG
  • XU LIQIANG

Assignees

  • 江苏电力装备有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (10)

  1. 1. The utility model provides an realize anti relief valve exhaust and shock-resistant attenuator simultaneously, includes cylinder body (1), oil return piston (2) and oil storage tank (3) that distribute in proper order from inside to outside, the rear end of cylinder body (1) is provided with back cylinder cap (4), the front end of cylinder body (1) is provided with preceding cylinder cap (5), the both ends of oil storage tank (3) respectively with back cylinder cap (4) and preceding cylinder cap (5) seal and fixed connection, oil return piston (2) respectively with oil storage tank (3) and cylinder body (1) slip and sealing connection, oil return piston (2) and preceding cylinder cap (5) elastic connection, piston rod (7) are worn to be equipped with in the activity on preceding cylinder cap (5), be provided with piston block (8) in cylinder body (1), piston block (8) are fixed to be provided with on back cylinder cap (4) first cylinder cap (9), be provided with through-hole (10) on cylinder body (1), cavity, first oil duct (10) and oil storage tank (3) are the cavity (8) are located in proper order between piston block (8) and the cavity (5) and are located in the cylinder cap (5) cavity (5), the piston block (8) is provided with a second oil duct (11), the piston rod (7) is provided with a third oil duct (12), and the rod cavity and the rodless cavity are communicated through the second oil duct (11) and the third oil duct (12), and the piston block is characterized in that a pressure relief valve exhaust module (13) is arranged in the first oil duct (9), and a pull-direction anti-seismic module (14) is arranged in the third oil duct (12); The pressure-relief valve exhaust module (13) comprises a first valve sleeve (131), a first valve core (132) is arranged at the inner end, close to the piston rod (7), of the first valve sleeve (131), the first valve core (132) is elastically connected with the first valve sleeve (131) through a first spring (133), and a plurality of first damping holes (134) are formed in the first valve core (132); The pull-to-earthquake-resistant module (14) comprises a second valve sleeve (141), two ends in the second valve sleeve (141) are respectively provided with a second valve core (142), the two second valve cores (142) are symmetrically arranged along the distribution direction of the rear cylinder cover (4) and the piston rod (7), a second spring (143) is arranged between the two second valve cores (142), two ends of the second spring (143) are respectively connected with the second valve cores (142), a plurality of second damping holes (144) are respectively formed in the two second valve cores (142), and a third damping hole (145) is formed in the second valve core (142) far away from the rear cylinder cover (4).
  2. 2. A damper for simultaneously realizing the exhaust resistance and the shock resistance of a safety valve according to claim 1, wherein the through hole (10) is positioned on one side of the piston block (8) close to the rear cylinder cover (4), and the oil return piston (2) is positioned on one side of the through hole (10) close to the piston block (8).
  3. 3. A damper for simultaneously achieving anti-relief valve exhaust and anti-shock according to claim 1, characterized in that the oil return piston (2) is connected with the front cylinder cover (5) through an oil return spring (6).
  4. 4. The damper for simultaneously realizing the exhaust resistance and the shock resistance of the safety valve according to claim 1 is characterized in that an oil level indicating sleeve (15) is movably sleeved on the outer wall of the oil storage tank (3) along the front-back direction, and the oil level indicating sleeve (15) is fixedly connected with one end, far away from the piston block (8), of the piston rod (7).
  5. 5. A damper for simultaneously achieving anti-purge and anti-shock of a safety valve according to claim 1, wherein the length and the aperture of the first orifice (134) are equal to those of the second orifice (144), respectively.
  6. 6. A damper for simultaneously achieving anti-exhaust and anti-vibration of a safety valve according to claim 5, wherein the length of the third orifice (145) is longer than the length of the second orifice (144), and the aperture of the third orifice (145) is smaller than the aperture of the second orifice (144).
  7. 7. A damper for simultaneously achieving anti-purge and anti-shock of a safety valve according to claim 1, wherein a plurality of first orifice holes (134) are circumferentially distributed and a plurality of second orifice holes (144) on the same second valve element (142) are circumferentially distributed.
  8. 8. A damper for simultaneously achieving anti-relief valve exhaust and anti-shock according to claim 1, characterized in that said third orifice (145) is arranged opposite to the second valve core (142) close to the front head (5).
  9. 9. A damper for simultaneously achieving anti-relief valve venting and anti-shock according to claim 1, wherein the oil reservoir (3) is provided with an oil filler hole, and the oil filler hole is provided with an oil plug (16).
  10. 10. The damper for simultaneously realizing the exhaust resistance and the shock resistance of the safety valve according to claim 1, wherein a check ring (135) is fixedly arranged on one side of the rear cylinder cover (4) close to the front cylinder cover (5), and the check ring (135) is propped against one side of the first valve core (132) close to the front cylinder cover (5).

Description

Damper capable of simultaneously realizing exhaust resistance and shock resistance of safety valve Technical Field The invention relates to a damper capable of simultaneously realizing anti-safety valve exhaust and anti-vibration, and belongs to the technical field of dampers. Background A hydraulic damper is a device that generates a damping force by the flow of hydraulic oil, thereby achieving suppression of mechanical vibration and impact. The mature hydraulic damper products in the market have three functions of shock-resistant, tensile relief valve exhaust and compression relief valve exhaust type dampers. The anti-safety valve exhaust type damper can only provide pulling or pressing, wherein the safety valve exhaust type damper in one direction has no anti-vibration function; As shown in fig. 1 to 3, the shock-resistant damper has a group of overflow valves and throttle valves in each of the pulling and pressing directions; The locking speed of the shock-resistant damper is 120-360mm/min, and the locking speed is 30-120mm/min; The shock-resistant damper has the characteristics that under the working condition of earthquake or accident, the overflow valve of the damper is triggered to be blocked, hydraulic oil flows through the throttle valve to generate damping force, the damper continues to move at 30-120mm/min, and approximate rigid protection is provided for equipment or pipelines. As shown in the figure, the tensile safety valve is used for exhausting, namely, only one group of overflow valves is used for pulling oil, and no valve group exists in the pressing direction; As shown in fig. 4 to 9, the pressure-resistant safety valve is used for exhausting, namely, only one group of overflow valves is used for pressing oil, and no valve group exists in the other pulling direction; the exhaust locking speed of the tensile (pressure) safety valve is 120-360mm/min, and the locking speed in the pulling (pressure) direction is 0; The tensile (pressure) relief valve has the characteristics that under the relief valve exhaust working condition, the relief valve of the damper is triggered to be blocked, the speed of the damper is reduced to 0, and rigid protection is provided for equipment or pipelines; The overflow valve of the damper is in a normally open state under the normal working condition, the expansion caused by heat and contraction caused by cold of equipment or a pipeline are avoided, the overflow valve of the damper is not triggered to be locked, and the damper moves along with the equipment or the pipeline; Therefore, aiming at the technical pain points that the existing damper is single in function and cannot simultaneously meet the requirements of 'safety valve exhaust rigidity protection' and 'earthquake working condition damping protection', the damper for simultaneously realizing safety valve exhaust resistance and earthquake resistance is required, the realization of the continuous thrust caused by safety valve exhaust in the pressing direction can be borne, and the earthquake resistance function can be realized in the pulling direction. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides the damper which can realize that the pressure direction can bear continuous thrust caused by the exhaust of the safety valve and the pulling direction can have the anti-vibration function and can realize the exhaust of the safety valve and the vibration resistance. The invention solves the problems by adopting the technical scheme that the damper for simultaneously realizing the exhaust and the shock resistance of the safety valve comprises a cylinder body, an oil return piston and an oil storage tank which are sequentially distributed from inside to outside, wherein the rear end of the cylinder body is provided with a rear cylinder cover, the front end of the cylinder body is provided with a front cylinder cover, two ends of the oil storage tank are respectively and fixedly connected with the rear cylinder cover and the front cylinder cover in a sealing manner, the oil return piston is respectively and slidably connected with the oil storage tank and the cylinder body in a sealing manner, the oil return piston is elastically connected with the front cylinder cover, a piston rod is movably penetrated on the front cylinder cover, a piston block is arranged in the cylinder body, the piston block is fixedly arranged at one end of the piston rod, a first oil duct is arranged on the rear cylinder cover, a through hole is formed in the cylinder body, a cavity in the cylinder body, the first oil duct, the through hole and the cavity in the oil storage tank are sequentially communicated, the cavity between the piston block and the front cylinder cover is a rod-free cavity, the cavity between the piston block and the front cylinder cover is provided with a rod cavity, the piston block is provided with a second oil duct, the piston block is fixedly provided with a thir