CN-121993381-A - Liquid-driven gas compression cylinder sealing structure and use method

CN121993381ACN 121993381 ACN121993381 ACN 121993381ACN-121993381-A

Abstract

The invention belongs to the technical field of compression cylinders, and discloses a liquid-driven gas compression cylinder sealing structure and a use method thereof, wherein the liquid-driven gas compression cylinder sealing structure comprises a compression cylinder body, a connecting frame, a cylinder cover, a limiting mechanism and a positioning assembly, the connecting frame is fixedly connected to the outer wall of the compression cylinder body, the cylinder cover covers the opening of the compression cylinder body, the limiting mechanism is arranged between the cylinder cover and the connecting frame, and the positioning assembly is arranged between the connecting frame and the cylinder cover and is used for positioning a cylinder die casting; the limiting mechanism comprises a component cavity, a limiting groove, a moving plate and a driving mechanism, wherein the component cavity is arranged in the cylinder cover, the limiting groove is arranged on the outer surface of the connecting frame, the moving plate is arranged in the component cavity and the limiting groove, and the driving mechanism is used for driving the moving plate to slide along the component cavity and the inner wall of the limiting groove. The hydraulic cylinder is convenient to operate, the cylinder cover and the cylinder body of the compression cylinder can be separated quickly, the sealing gasket can be replaced quickly, the tightness of the hydraulic cylinder is ensured, and the production efficiency is improved.

Inventors

JI XIAOKE
LI MAO
HE SHUNAN
MAO YONG
CHEN XIAOGANG
LIU PENG
YANG JINGCHEN
LI GUOMING

Assignees

中国石油天然气股份有限公司

Dates

Publication Date: 20260508
Application Date: 20241101

Claims (10)

1. The utility model provides a liquid drives gas compression cylinder seal structure, its characterized in that includes compression cylinder body (1), link (2), cylinder cap (3), stop gear (4) and locating component, link (2) fixed connection in the outer wall of compression cylinder body (1), cylinder cap (3) lid in the opening part of compression cylinder body (1), stop gear (4) set up in between cylinder cap (3) and link (2), locating component set up in between link (2) and cylinder cap (3) for fix a position cylinder body die casting; Stop gear (4) are including subassembly chamber (401), spacing groove (402), movable plate (406), actuating mechanism, subassembly chamber (401) set up in cylinder cap (3), spacing groove (402) set up in the surface of link (2), movable plate (406) set up in subassembly chamber (401) with in spacing groove (402), actuating mechanism is used for the drive movable plate (406) are followed subassembly chamber (401) with spacing groove (402) inner wall slides.
2. The liquid-driven gas compression cylinder sealing structure according to claim 1, wherein the driving mechanism comprises a first rotating shaft (403), a threaded portion (404), a blocking ring (405), a first conical gear (407), a second rotating shaft (408), a second conical gear (409) and a rotating handle (410), the first rotating shaft (403) is arranged in the assembly cavity (401), the threaded portion (404) is arranged at two ends of the first rotating shaft (403), the threads of the threaded portions (404) at two ends rotate oppositely, the blocking ring (405) is arranged at the joint of the polished rod portion and the threaded portion (404) of the first rotating shaft (403), one end of the moving plate (406) is in threaded connection with the first rotating shaft (403), the first conical gear (407) is fixedly sleeved on the outer surface of the first rotating shaft (403), the outer surface of the second rotating shaft (408) is rotatably connected to the inner wall of the assembly cavity (401), the second conical gear (409) is fixedly sleeved on the second rotating shaft (408), and the second conical gear (409) is fixedly meshed with the first conical gear (407) and the second rotating shaft (410).
3. The liquid-driven gas compression cylinder sealing structure according to claim 2, wherein the limiting mechanism (4) further comprises a stop component, the stop component comprises a meshing gear (411), a sliding groove (412), a sliding plate (413), a limiting block (414) and a spring (415), the meshing gear (411) is fixedly connected with the second rotating shaft (408), the sliding groove (412) is formed in the outer surface of the cylinder cover (3), the sliding plate (413) is slidingly connected with the inner wall of the sliding groove (412), one end of the sliding plate (413) is fixedly connected with the spring (415), the spring (415) is arranged in the sliding groove (412), the limiting block (414) is fixedly connected onto the sliding plate (413), and the limiting block (414) is in clamping connection with the meshing gear (411).
4. A liquid-driven gas compression cylinder sealing structure according to claim 3, wherein a tooth space is provided at one end of the stopper (414), the meshing gear (411) is a ratchet, and the tooth space of the stopper (414) is meshed with the meshing gear (411).
5. A liquid-repellent gas compression cylinder sealing arrangement according to claim 3, characterized in that the stopper (414) is T-shaped.
6. The liquid-repellent gas compression cylinder sealing structure according to claim 2, wherein the surface of the stem (410) is provided with anti-skid patterns.
7. The liquid-driven gas compression cylinder sealing structure according to claim 1, wherein the limiting mechanism (4) is provided with four, and is uniformly distributed on the outer surface of the cylinder cover (3).
8. The liquid-driven gas compression cylinder sealing structure according to claim 1, wherein the positioning assembly comprises a positioning opening (6) and a positioning rod (7), the positioning opening (6) is formed in the outer surface of the cylinder cover (3), the positioning rod (7) is fixed on the outer surface of the connecting frame (2), the positioning opening (6) corresponds to the positioning rod (7) in position, and the positioning rod (7) is inserted into the positioning opening (6).
9. The liquid-repellent gas compression cylinder sealing structure according to any one of claims 1 to 8, further comprising a sealing annular gasket (8), the sealing annular gasket (8) being disposed between the compression cylinder block (1) and the cylinder head (3).
10. A method of using the liquid-repellent gas compression cylinder seal of claim 9, comprising the steps of: s1, driving a moving plate (406) to slide along the inner walls of the assembly cavity (401) and the limiting groove (402) so that the connecting frame (2) is disconnected with the compression cylinder body (1); S2, replacing the sealing annular gasket (8); S3, under the positioning action of the positioning assembly, the connecting frame (2) is abutted with the compression cylinder body (1), and the moving plate (406) is driven to slide along the inner walls of the assembly cavity (401) and the limiting groove (402), so that the connecting frame (2) is tightly connected with the compression cylinder body (1).

Description

Liquid-driven gas compression cylinder sealing structure and use method Technical Field The invention belongs to the technical field of compression cylinders, and particularly relates to a liquid-driven gas compression cylinder sealing structure and a use method thereof. Background The hydraulic-driven gas compression cylinder is a special type of compression cylinder, and the working principle of the hydraulic-driven gas compression cylinder is different from that of a traditional pneumatic-driven or electric compression cylinder. The hydraulic cylinder mainly uses liquid as driving force, and converts pressure energy of the liquid into mechanical energy through the hydraulic transmission mechanism, so that the piston is driven to reciprocate in the cylinder body, and compression of gas is realized. The liquid-driven gas compression cylinder has unique advantages in some special application scenes, such as environments requiring high thrust, high speed control precision or high explosion-proof requirements. The pads of the liquid-driven gas compression cylinder are key components to ensure the effective and efficient operation of the gas compression process. The primary purpose of such gaskets is to prevent gas leakage and liquid ingress into the compression area, thereby maintaining the continuity and stability of the compression process. At present, the sealing gasket is positioned between the piston and the cylinder body to ensure close fit between the piston and the cylinder body so as to prevent gas leakage from a compression area, however, the sealing gasket has the problems of ageing, abrasion and the like after long-time use, and the cylinder body design of the traditional liquid-driven gas compression cylinder can need a plurality of steps and tools to be completely detached, so that the difficulty of replacing the sealing gasket is increased, the sealing gasket replacing process is troublesome, the equipment downtime is possibly prolonged, the continuity and the efficiency of a production line are affected, and the yield is reduced. Disclosure of Invention The invention aims to provide a liquid-driven gas compression cylinder sealing structure and a use method thereof, which realize quick taking out and replacement of a sealing annular gasket and improve production efficiency. The technical scheme adopted by the invention is that the hydraulic-driven gas compression cylinder sealing structure comprises a compression cylinder body, a connecting frame, a cylinder cover, a limiting mechanism and a positioning assembly, wherein the connecting frame is fixedly connected to the outer wall of the compression cylinder body, the cylinder cover covers the opening of the compression cylinder body, the limiting mechanism is arranged between the cylinder cover and the connecting frame, and the positioning assembly is arranged between the connecting frame and the cylinder cover and is used for positioning a cylinder body die casting; The limiting mechanism comprises a component cavity, a limiting groove, a moving plate and a driving mechanism, wherein the component cavity is formed in the cylinder cover, the limiting groove is formed in the outer surface of the connecting frame, the moving plate is arranged in the component cavity and the limiting groove, and the driving mechanism is used for driving the moving plate to slide along the component cavity and the inner wall of the limiting groove. Preferably, the driving mechanism comprises a first rotating shaft, a threaded part, a blocking ring, a first conical gear, a second rotating shaft, a second conical gear and a rotating handle, wherein the first rotating shaft is arranged in the assembly cavity, the threaded parts are arranged at two ends of the first rotating shaft, threads of the threaded parts at two ends are opposite in rotation direction, the blocking ring is arranged at the joint of the polished rod part and the threaded parts of the first rotating shaft, one end of the moving plate is in threaded connection with the first rotating shaft, the first conical gear is fixedly sleeved on the outer surface of the first rotating shaft, the outer surface of the second rotating shaft is rotatably connected to the inner wall of the assembly cavity, the second conical gear is fixedly sleeved on the second rotating shaft, the second conical gear is in meshed connection with the first conical gear, and the rotating handle is fixedly connected with the second rotating shaft. Preferably, the limiting mechanism further comprises a stop component, the stop component comprises a meshing gear, a sliding groove, a sliding plate, a limiting block and a spring, the meshing gear is fixedly connected with the second rotating shaft, the sliding groove is formed in the outer surface of the cylinder cover, the inner wall of the sliding groove is slidably connected with the sliding plate, one end of the sliding plate is fixedly connected with the spring, the spring is arrang