一种集成式液压维修阀
By designing an integrated hydraulic maintenance valve and adopting stacked installation and threaded cartridge stop valves, the problems of missing A and B type maintenance valves and large size and weight in the hydraulic system are solved. This enables the maintenance of directional valves during normal ship navigation, facilitates installation and replacement, and improves maintenance efficiency and system reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE 704TH RES INST OF CHINA STATE SHIPBUILDING CORP
- Filing Date
- 2025-06-26
- Publication Date
- 2026-07-17
AI Technical Summary
The existing hydraulic system lacks type A and type B maintenance valves. Traditional maintenance valves are large, heavy, and expensive, which affects the working stability and maintenance convenience of the ship's controllable pitch propeller device.
An integrated hydraulic maintenance valve is designed, which adopts a stacked installation method and combines with a threaded cartridge stop valve to realize the on/off control of oil circuits A and B. It adopts the ISO4401 standard interface for easy installation and replacement.
This enables the repair or replacement of directional valves while the ship is in normal navigation, reducing piping workload, lowering equipment size and cost, and improving maintenance convenience and system reliability.
Smart Images
Figure CN224515511U_ABST
Abstract
Claims
1. An integrated hydraulic service valve characterized by, It includes an integrated valve block, a maintenance valve, and a directional valve. The integrated valve block and the directional valve are connected by the maintenance valve. The maintenance valve is equipped with P port, T port, A port, and B port corresponding to the integrated valve block and the directional valve. The maintenance valve is equipped with a threaded cartridge stop valve. The inlet and outlet ports of the threaded cartridge stop valve are connected to the A port and B port on the integrated valve block and the directional valve, respectively, forming a superimposed structure of integrated valve block, maintenance valve, and directional valve from bottom to top.
2. The integrated hydraulic service valve of claim 1, wherein, The bottom of the maintenance valve has a threaded mounting hole for connecting to the integrated valve block, and the maintenance valve is fixed to the integrated valve block by bolts; the top of the maintenance valve also has a threaded mounting hole for connecting to the directional valve.
3. The integrated hydraulic maintenance valve according to claim 1, characterized in that, The relative positions of the P, T, A, and B ports of the maintenance valve correspond one-to-one with the relative positions of the P, T, A, and B ports of the integrated valve block and the directional valve.
4. The integrated hydraulic service valve of claim 1, wherein, The threaded cartridge stop valve includes an A-way stop valve for controlling the on / off state of oil circuit A and a B-way stop valve for controlling the on / off state of oil circuit B. The A-way stop valve is connected to oil port A, and the B-way stop valve is connected to oil port B.
5. The integrated hydraulic service valve of claim 1, wherein, The mounting surface of the integrated hydraulic maintenance valve adopts the ISO4401 standard interface.
6. The integrated hydraulic service valve of claim 1, wherein, The threaded cartridge stop valve is a two-way stop valve, and its valve port flow area is matched with the diameter of port A and port B.
7. The integrated hydraulic service valve of claim 1, wherein, The maintenance valve is equipped with a main inlet oil passage for connecting the P port to the P port of the directional valve, and a main return oil passage for connecting the T port to the T port of the directional valve.