External oil pump device of hydraulic coupler

Abstract

The utility model discloses an external oil pump device of a hydraulic coupler, and belongs to the technical field of thermal power generation equipment. In order to solve the problems that a single auxiliary oil pump of an existing hydraulic coupler is prone to failing in long-term operation, and the standby safety of a generator set is affected, the redundant design is achieved by connecting a main oil pump and a standby oil pump in parallel, oil inlets of the main oil pump and the standby oil pump are connected into an ingress pipe in parallel, and oil outlets of the main oil pump and the standby oil pump are connected with an oil inlet of the hydraulic coupler through an eduction pipe in parallel; each oil way is provided with a switching valve to support on-line switching. The device is further provided with a one-way valve to prevent backflow, a pressure sensor monitors oil pressure, a flow regulating valve regulates oil quantity, and maintenance convenience is improved through a quick-release flange and a maintenance observation window. The double pumps are standby for each other, so that the hydraulic coupler can still maintain lubricating oil pressure when a single oil pump fails, standby safety of a generator set is guaranteed, online maintenance of the failed oil pump is supported, and system reliability and operation and maintenance efficiency are remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of thermal power generation equipment technology, and in particular to an external oil pump device for a hydraulic coupling. Background Technology

[0002] As a crucial transmission component in thermal power generating units, the safe operation of hydraulic couplings depends on a stable supply of lubricating oil. Currently, the auxiliary oil pumps of hydraulic couplings are generally configured as a single unit, requiring continuous 24-hour operation to maintain a standby state. However, this technology has the following drawbacks:

[0003] A single oil pump is prone to failure during long-term operation. Once it fails, the hydraulic coupling will lose its backup capability, which will directly affect the safe start-up and shutdown of the generator set.

[0004] If the oil pump fails, the system needs to be shut down for repairs. During the repair period, the hydraulic coupling cannot guarantee the safety of the system, posing a significant safety hazard.

[0005] To address the aforementioned issues, this invention proposes an external oil pump device for a hydraulic coupler. By employing a parallel dual-oil pump design, the two pumps can serve as backups for each other, ensuring the reliability of the hydraulic coupler during standby periods. Utility Model Content

[0006] To address the technical problems existing in the background art, this utility model proposes an external oil pump device for a hydraulic coupler.

[0007] This utility model proposes a hydraulic coupler parallel oil pump device, which includes a hydraulic coupler, a main oil pump, a standby oil pump, and pipelines.

[0008] The inlet of the main oil pump and the inlet of the standby oil pump are connected in parallel to the side wall of the inlet pipe.

[0009] The outlet of the main oil pump and the outlet of the standby oil pump are connected in parallel to the side wall of the outlet pipe, and the outlet pipe is connected to the inlet of the hydraulic coupler.

[0010] Switching valves are installed on the inlet and outlet pipelines of both the main oil pump and the standby oil pump.

[0011] Preferably, the switching valve is a shut-off valve or a solenoid valve.

[0012] Preferably, the outlet pipes of the main oil pump and the standby oil pump are equipped with check valves to prevent hydraulic oil backflow.

[0013] Preferably, the housing of the hydraulic coupler is provided with a maintenance observation window, which covers the connection area between the main oil pump and the standby oil pump and the pipeline.

[0014] Preferably, the inlet pipe is a hydraulic oil supply line, and a pressure sensor for monitoring the hydraulic oil pressure is provided on the inlet pipe.

[0015] Preferably, the outlet pipe is equipped with a flow regulating valve for regulating the flow rate of hydraulic oil entering the working chamber of the hydraulic coupler.

[0016] Preferably, both the main oil pump and the standby oil pump are mounted on a base. The base is a frame structure and is equipped with a detachable protective housing. The protective housing can protect the main oil pump and the standby oil pump, and is also provided with heat dissipation holes.

[0017] Preferably, the main oil pump and the standby oil pump are connected to the inlet pipe and the outlet pipe via quick-release flanges with sealing gaskets.

[0018] This invention proposes an external oil pump device for a hydraulic coupler, where the main oil pump and the standby oil pump serve as backups for each other. In the event of a failure in either pump, the other pump can be quickly activated by switching valves, ensuring stable lubricating oil pressure during the standby period of the hydraulic coupler. In the event of a single pump failure, there is no need to shut down the system, and the faulty pump can be repaired without affecting the system operation. The design of the quick-release flange and maintenance observation window simplifies the maintenance process and shortens downtime. The configuration of the check valve, pressure sensor, and flow regulating valve enhances the system's anti-interference capability and stability.

[0019] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a partial structural schematic diagram of the present invention.

[0022] The following are the labels in the diagram: 1. Hydraulic coupling; 2. Main oil pump; 3. Standby oil pump; 4. Inlet pipe; 5. Outlet pipe; 6. Switching valve; 7. Base. Detailed Implementation

[0023] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0024] like Figures 1-2 The illustrated hydraulic coupling external oil pump device includes a hydraulic coupling 1, a main oil pump 2, a standby oil pump 3, and a piping system.

[0025] The parallel oil circuit design connects the inlets of the main oil pump 2 and the standby oil pump 3 in parallel to the side wall of the inlet pipe 4, sharing the hydraulic oil supply.

[0026] The oil outlets of the main oil pump 2 and the standby oil pump 3 are connected in parallel to the oil inlet of the hydraulic coupling 1 through the outlet pipe 5;

[0027] Switching valves 6 are installed on the inlet and outlet pipelines of both the main oil pump 2 and the standby oil pump 3, supporting online switching.

[0028] Security Structure

[0029] A check valve is installed on the oil outlet pipeline to prevent hydraulic oil from flowing back;

[0030] A pressure sensor is installed on the inlet pipe 4 to monitor the oil supply pressure in real time;

[0031] A flow regulating valve is installed on the outlet pipe 5 to regulate the flow rate of oil entering the working chamber of the hydraulic coupler.

[0032] Ease of maintenance

[0033] The housing of the hydraulic coupling 1 is equipped with a maintenance observation window, covering the connection area between the oil pump and the pipeline;

[0034] The oil pump and pipeline are connected by quick-release flanges with sealing gaskets, which facilitates rapid maintenance.

[0035] Normal operation: Main oil pump 2 is running, standby oil pump 3 is in standby mode, and switching valve 6 controls the oil circuit opening and closing;

[0036] Main oil pump failure: Close the main oil pump circuit by switching valve 6, start the backup oil pump 3, and the pressure sensor monitors the oil supply pressure in real time to ensure stable lubricating oil pressure;

[0037] Maintenance scenario: When a single oil pump fails, switch to another oil pump, open the maintenance observation window and remove the quick-release flange to repair the faulty oil pump.

[0038] This utility model is applicable to the auxiliary oil supply system of hydraulic coupling in thermal power generator sets. The dual-pump parallel design significantly improves the reliability of the backup system and can be widely used in transmission equipment in the power, petrochemical and other fields.

[0039] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An external oil pump device for a hydraulic coupler, comprising a hydraulic coupler (1), a main oil pump (2), a standby oil pump (3), and pipelines, characterized in that: The inlet of the main oil pump (2) and the inlet of the standby oil pump (3) are connected in parallel to the side wall of the inlet pipe (4); The oil outlet of the main oil pump (2) and the oil outlet of the standby oil pump (3) are connected in parallel to the side wall of the outlet pipe (5), and are connected to the oil inlet of the hydraulic coupler (1) through the outlet pipe (5). Switching valves (6) are installed on the inlet and outlet pipelines of the main oil pump (2) and the standby oil pump (3).

2. The external oil pump device for a hydraulic coupler according to claim 1, characterized in that, The switching valve (6) is a shut-off valve or a solenoid valve.

3. The external oil pump device for a hydraulic coupler according to claim 1, characterized in that, The main oil pump (2) and the standby oil pump (3) are equipped with check valves on their outlet pipes to prevent hydraulic oil from flowing back.

4. The external oil pump device for a hydraulic coupler according to claim 1, characterized in that, The hydraulic coupler (1) is provided with a maintenance observation window on its housing, which covers the connection area between the main oil pump (2) and the standby oil pump (3) and the pipeline.

5. An external oil pump device for a hydraulic coupler according to claim 1, characterized in that, The inlet pipe (4) is a hydraulic oil supply line, and a pressure sensor for monitoring the hydraulic oil pressure is installed on the inlet pipe (4).

6. An external oil pump device for a hydraulic coupler according to claim 1, characterized in that, The outlet pipe (5) is equipped with a flow regulating valve to regulate the flow rate of hydraulic oil entering the working chamber of the hydraulic coupler (1).

7. An external oil pump device for a hydraulic coupler according to claim 1, characterized in that, The main oil pump (2) and the standby oil pump (3) are both mounted on the base (7). The base (7) is a frame structure and is equipped with a detachable protective shell. The protective shell can protect the main oil pump (2) and the standby oil pump (3) and is also provided with heat dissipation holes.

8. An external oil pump device for a hydraulic coupler according to claim 1, characterized in that, The main oil pump (2) and the standby oil pump (3) are connected to the inlet pipe (4) and the outlet pipe (5) through quick-release flanges with sealing gaskets.

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