Power plant fan oil supply system

Abstract

The utility model relates to the technical field of oil supply systems, in particular to a fan oil supply system which comprises an oil tank and an integrated valve block, and a first valve inner pipe and a second valve inner pipe are arranged in the integrated valve block. The first valve inner pipe and the second valve inner pipe are connected with oil outlet pipes; the oil tank is connected with the first valve inner pipe through a first inlet pipe and connected with the second valve inner pipe through a second inlet pipe. Stop valves are mounted on the first valve inner pipe and the second valve inner pipe close to the oil outlet pipe; a first oil pump is mounted on the first inlet pipe, and a second oil pump is mounted on the second inlet pipe; a balance pipe is connected between the first valve inner pipe and the second valve inner pipe; according to the utility model, under the condition that the fan is not shut down, isolated maintenance or part replacement can be realized; the oil pump in the running state and the oil pump in the standby state can establish an oil passage, and the situation that oil pressure cannot be established after the standby oil pump stops running for a long time and vacuum starting is formed in the oil pipe is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of oil supply systems, and particularly to a fan oil supply system. Background Art

[0002] In a thermal power plant, the oil supply system, as an indispensable part of power generation equipment, undertakes the important task of providing stable and reliable lubricating oil for the fan; the oil supply system transports the lubricating oil to each lubrication point of the fan through an oil pump to ensure the lubrication and cooling of the friction parts during the operation of the fan, thereby improving the operation efficiency of the fan and extending its service life.

[0003] The existing oil supply system is provided with an integrated valve block, and the integrated valve block is connected with two interconnected oil pipes. When repairing the oil pipes or replacing the components installed on one of the oil pipes, the fan must be shut down before operation; this affects the normal operation of the fan. Content of the Utility Model

[0004] The main purpose of the utility model is to provide an oil supply system for a power plant fan, so as to solve the problem that the fan must be shut down for operation when the oil supply system for the power plant fan is repaired or components are replaced in the above-mentioned existing technology.

[0005] To achieve the above purpose, the utility model provides an oil supply system for a power plant fan, which includes an oil tank and an integrated valve block. The integrated valve block is provided with a first inner valve pipe and a second inner valve pipe; both the first inner valve pipe and the second inner valve pipe are connected with an oil outlet pipe; the oil tank is connected with the first inner valve pipe through a first inlet pipe and connected with the second inner valve pipe through a second inlet pipe; stop valves are installed at positions on the first inner valve pipe and the second inner valve pipe close to the oil outlet pipe.

[0006] Further, a first oil pump is installed on the first inlet pipe, and a second oil pump is installed on the second inlet pipe; a balance pipe is connected between the first inner valve pipe and the second inner valve pipe.

[0007] Further, a first check valve is installed on the first inner valve pipe, and a second check valve is installed on the second inner valve pipe.

[0008] Further, a first overflow valve and a second overflow valve are installed on the integrated valve block; the first overflow valve is connected with a first overflow pipe, and both ends of the first overflow pipe are respectively connected with the first inner valve pipe and the oil tank; the second overflow valve is connected with a second overflow pipe, and both ends of the second overflow pipe are respectively connected with the second inner valve pipe and the oil tank.

[0009] Further, needle valves are provided at both ends of the balance pipe.

[0010] By providing a stop valve, the utility model can isolate and repair or replace components of one of the first valve inner pipe and the second valve inner pipe, while the other can be used normally, so as to ensure isolation for repair or component replacement without shutting down the fan.

[0011] By providing a balance pipe, the utility model can establish an oil passage between the oil pump in the operating state and the standby oil pump, preventing the internal vacuum from forming in the oil pipe during the long-term shutdown of the standby oil pump and making it impossible to establish oil pressure after startup. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings forming a part of this application are used to provide a further understanding of the utility model. The schematic embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an improper limitation to the utility model.

[0013] Figure 1 It is a schematic structural diagram of an embodiment;

[0014] In the figure: 1, oil tank; 2, integrated valve block; 201, first valve inner pipe; 202, second valve inner pipe; 203, oil outlet pipe; 3, first inlet pipe; 4, second inlet pipe; 5, first oil pump; 6, second oil pump; 7, first check valve; 8, second check valve; 9, stop valve; 10, balance pipe; 11, first relief valve; 12, second relief valve; 13, first relief pipe; 14, second relief pipe; 15, needle valve. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0015] It should be noted that, without conflict, the embodiments in this application and the features in the embodiments can be combined with each other. The following will refer to the drawings and combine with the embodiments to detail the utility model.

[0016] As Figure 1 shown, according to an embodiment of the utility model, a power plant fan oil supply system is provided, including an oil tank 1 and an integrated valve block 2. The integrated valve block 2 is provided with a first valve inner pipe 201 and a second valve inner pipe 202; both the first valve inner pipe 201 and the second valve inner pipe 202 are connected with an oil outlet pipe 203; the oil tank 1 is connected to the first valve inner pipe 201 through a first inlet pipe 3 and to the second valve inner pipe 202 through a second inlet pipe 4; a stop valve 9 is installed at a position close to the oil outlet pipe 203 on both the first valve inner pipe 201 and the second valve inner pipe 202.

[0017] A first oil inlet pipe 3 is equipped with a first oil pump 5, and a second oil inlet pipe 4 is equipped with a second oil pump 6; a balance pipe 10 is connected between a first valve inner pipe 201 and a second valve inner pipe 202; needle valves 15 are provided at both ends of the balance pipe 10; the balance pipe 10 can establish an oil passage between the oil pump in the operating state and the standby oil pump, preventing a vacuum from forming inside the oil pipe during the long-term shutdown of the standby oil pump and making it impossible to establish oil pressure after startup; the needle valves 15 are used to facilitate isolation and replacement of the balance pipe 10.

[0018] A first one-way valve 7 is installed on the first valve inner pipe 201, and a second one-way valve 8 is installed on the second valve inner pipe 202.

[0019] A first overflow valve 11 and a second overflow valve 12 are installed on the integrated valve block 2; the first overflow valve 11 is connected with a first overflow pipe 13, and both ends of the first overflow pipe 13 are respectively connected to the first valve inner pipe 201 and the fuel tank 1; the second overflow valve 12 is connected with a second overflow pipe 14, and both ends of the second overflow pipe 14 are respectively connected to the second valve inner pipe 202 and the fuel tank 1.

[0020] The working principle of the above embodiment is as follows:

[0021] Under normal working conditions, the stop valves 9 on the first valve inner pipe 201 and the second valve inner pipe 202 are both in the open state, and one of the first oil pump 5 and the second oil pump 6 is in the open state, and the components on this side of its pipeline are also in the working state, and the other side is in the standby state.

[0022] When a fault occurs or maintenance is required on the in-use side, close the oil pump and the stop valve 9 on this side to isolate and repair this side; open the oil pump on the other side to continuously supply oil to the fan so that the fan can work normally.

[0023] This embodiment can realize on-line maintenance of components without affecting the operation of the fan.

[0024] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A power plant fan oil supply system, comprising an oil tank (1) and an integrated valve block (2). A first inner valve pipe (201) and a second inner valve pipe (202) are arranged in the integrated valve block (2); both the first inner valve pipe (201) and the second inner valve pipe (202) are connected with an oil outlet pipe (203); the oil tank (1) is connected to the first inner valve pipe (201) through a first inlet pipe (3) and connected to the second inner valve pipe (202) through a second inlet pipe (4); it is characterized in that, A stop valve (9) is installed at a position on the first valve inner pipe (201) and the second valve inner pipe (202) close to the oil outlet pipe (203).

2. The oil supply system for the power plant fan as described in claim 1, wherein A first oil pump (5) is installed on the first inlet pipe (3), and a second oil pump (6) is installed on the second inlet pipe (4); a balance pipe (10) is connected between the first valve inner pipe (201) and the second valve inner pipe (202).

3. The oil supply system for a power plant fan as claimed in claim 1, wherein, A first check valve (7) is installed on the first valve inner pipe (201), and a second check valve (8) is installed on the second valve inner pipe (202).

4. The oil supply system for a power plant fan as claimed in claim 1, wherein A first relief valve (11) and a second relief valve (12) are installed on the integrated valve block (2); the first relief valve (11) is connected with a first relief pipe (13), and two ends of the first relief pipe (13) are respectively connected with the first valve inner pipe (201) and the oil tank (1); the second relief valve (12) is connected with a second relief pipe (14), and two ends of the second relief pipe (14) are respectively connected with the second valve inner pipe (202) and the oil tank (1).

5. The oil supply system for a power plant fan according to claim 2, characterized in that, Needle valves (15) are provided at two ends of the balance pipe (10).

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