Gas-hydraulic hybrid power HBW stable injection system
An injection system, stable technology, applied in the direction of engine components, engine sealing, engine lubrication, etc., can solve the problems of inability to synchronize grease injection at each grease injection point, discontinuous HBW grease injection time, etc.
Pending Publication Date: 2018-10-19
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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Problems solved by technology
[0004] Aiming at the technical problems that the HBW grease injection time of the existing HBW grease injection system is discontinuous and each grease injection point cannot be injected synchronously, the present invention proposes a gas-liquid hybrid HBW stable injection system, which combines pneumatic and hydraulic control The method realizes stable and continuous injection of HBW grease in time and uniform injection at each point, ensures the stability of the seal, improves the reliability of the seal, and enables the main drive to work stably and normally for a long time
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[0016] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0017] Such as figure 1 As shown, a gas-liquid hybrid HBW stable injection system includes a proportional cylinder 5, a pneumatic grease pump 13, a grease injection circuit and a hydraulic circuit. The proportional cylinder 5 includes a grease chamber A, an air chamber B, and a hydraulic oil chamber C. The grease chamber A and the hydraulic oil chamber C are respectively located on both sides of the air chamber B, and a piston rod is arranged in the air chambe...
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The invention provides a gas-liquid hybrid power HBW stable injection system. The gas-liquid hybrid power HBW stable injection system is used for solving the problems that HBW grease injection time isdiscontinuous and grease injection points cannot be synchronously injected. The gas-liquid hybrid power HBW stable injection system comprises a proportional oil cylinder, a pneumatic grease pump, a grease injection circuit and a hydraulic circuit, wherein the proportional oil cylinder comprises a grease cavity, an air cavity and a hydraulic oil cavity, the grease cavity and the hydraulic oil cavity are correspondingly positioned on both sides of the air cavity, and a piston rod is arranged in the air cavity; the hydraulic oil cavity is connected with the hydraulic circuit, and a flow controlunit is arranged on the hydraulic circuit; the grease cavity is correspondingly connected with the pneumatic grease pump and the grease injection circuit, wherein the grease injection circuit comprises a first-stage motor distributor and a second-stage motor distributor; and the grease cavity is connected with the first-stage motor distributor, and the first-stage motor distributor is connected with the second-stage motor distributor. According to the gas-liquid hybrid power HBW stable injection system, the synchronization and stability of HBW grease injection at each grease injection point ofa labyrinth seal cavity are realized by combining pneumatic and hydraulic control, and the long-term stable work of main drive seal can be guaranteed.
Description
technical field [0001] The invention relates to the technical field of labyrinth seals driven by shield machines, in particular to a gas-liquid hybrid HBW stable injection system, which realizes HBW stable injection by combining pneumatic control and hydraulic control. Background technique [0002] In shield construction, the main drive directly faces the muddy water pressure in the soil bin. In order to ensure the reliable and stable operation of the main drive, the main drive needs a reliable grease injection system. As the first line of defense of the sealing system, the labyrinth seal chamber is usually injected with HBW grease, which has good adhesion, good sealing performance and good waterproof and scouring performance, and can effectively prevent dregs and muddy water from entering the main drive. [0003] At present, the HBW injection system used in the shield industry is directly injected into the motor distributor through a pneumatic grease pump, and then the moto...
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Login to View More IPC IPC(8): F16J15/447F16N7/38F15B11/00
CPCF15B11/00F16J15/447F16N7/38
Inventor 郭付军黄剑张晶晶刘永亮周小磊张凯张杰
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD