Multi-part oil groove and hydraulic system comprehensive oil discharge system of water-turbine generator set
By installing the oil drain main pipe and oil drain pump in the oil drain system of the water turbine generator set, and setting up automatic monitoring equipment, the problems of oil leakage, time and effort during the oil drainage process in the prior art are solved, and an efficient and safe oil drainage process is achieved.
Patent Information
- Application Number
- CN202422051296.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-23
- Publication Date
- 2025-05-27
- Estimated Expiration
- 2034-08-23
AI Technical Summary
During the oil discharge process, existing water turbine generator sets have problems such as oil leakage, time-consuming and labor-intensive arrangement of temporary pipelines, easy damage to the pipeline, difficulty in automatic monitoring of oil discharge status, and difficulty in real-time monitoring of outlet pressure.
A comprehensive oil drainage system for multi-part oil tanks and hydraulic system of the hydraulic system of the water turbine generator set is designed. By installing an oil drain main pipe and an oil drain pump on the basis of the existing oil drain pipe, an oil drain pump inlet valve, an oil drain pump oil drain valve, a visual pipeline, a pressure sensor and a flowmeter, automatic monitoring and control is achieved.
No temporary oil drain pipes and pumps are required, saving manpower and time, avoiding oil spillage, improving oil drainage efficiency and safety, realizing automatic pump shutdown and pressure monitoring, and ensuring the safety and reliability of the oil drainage process.
Smart Images
Figure CN222910402U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of oil discharge of a water turbine generator set, in particular to an integrated oil discharge system of oil tanks at multiple locations and a hydraulic system of a water turbine generator set. Background Art
[0002] The main parts of the turbine generator set that use turbine oil include the upper guide bearing, the derivation bearing, the water guide bearing, the governor hydraulic system, and the cylinder valve hydraulic system. Each part is equipped with an oil drain pipe, which is arranged to the door of the waterwheel room through a DN65 steel pipe. A ball valve is installed at the outlet of the oil drain pipe of each part. The end of the pipe is not connected to the oil drain main pipe of the plant, and there is no oil drain pump on the oil drain pipe. When the above oil-using parts need to be drained during maintenance, the oil is drained through the existing upper guide oil tank drain pipe, derivation oil tank drain pipe, water guide oil tank drain pipe, governor return oil tank drain pipe, and cylinder valve return oil tank drain pipe, but a temporary oil drain pump and temporary oil drain pipe are required to drain the oil to the plant oil drain main pipe.
[0003] However, the prior art has the following disadvantages:
[0004] 1. The oil drain pipes of various parts are only arranged outside the waterwheel room, and the ends of the oil drain pipes are not connected to the oil drain main pipes of the plant. Temporary pipelines and temporary oil drain pumps need to be arranged for oil drainage. During the disassembly and assembly of temporary pipelines, oil leakage is likely to pollute the environment.
[0005] 2. There are no oil drain pumps in the oil tanks of various parts of the turbine generator set, the hydraulic system of the speed governor, and the hydraulic system of the cylinder valve. If oil drainage is required, a temporary oil drain pump must be arranged, and then a temporary oil drain pipe must be used to connect the oil drain pipes at the required oil drain parts to the factory oil drain main pipe. The oil drain pump is heavy, and the arrangement of temporary oil drain pipelines is time-consuming and labor-intensive, resulting in low work efficiency.
[0006] 3. Temporary oil drainage pipelines are mostly made of transparent plastic hoses and braided metal hoses, which are frequently disassembled, assembled, stored and sorted, which can easily cause pipeline damage, loose joints, aging of seals and other faults, greatly increasing the risk of pipeline bursts.
[0007] 4. The oil discharge status depends solely on the staff's visual observation, and it is difficult to achieve the low-flow automatic pump stop function. This often results in the oil being drained but the pump not stopping, which damages the oil discharge pump.
[0008] 5. The outlet pressure of the oil discharge pump is only observed by a mechanical pressure gauge. If the oil discharge pipeline is blocked or the outlet valve is not fully opened, the outlet pressure will increase instantly, which may easily cause the pipeline to burst or damage the oil discharge pump. Utility Model Content
[0009] In view of the problems existing in the prior art, a comprehensive oil drainage system for multiple oil tanks and hydraulic systems of a hydro-turbine generator set is provided. By improving the oil drainage pipeline of the hydro-turbine generator set, there is no need to use temporary oil drainage pipes and temporary oil drainage pumps, which saves a lot of manpower and time. There will be no oil overflow during the entire oil drainage process, which is beneficial to environmental protection.
[0010] The technical scheme adopted by the utility model is as follows: a comprehensive oil drainage system for oil tanks in multiple parts of a hydro-turbine generator set and a hydraulic system, wherein the comprehensive oil drainage system comprises an oil drainage main pipe of the unit, an oil drainage pump, an oil drainage pump oil inlet valve, an oil drainage pump oil outlet valve and a visual pipeline; the upper oil guide tank oil drainage valve, the derived oil tank oil drainage valve, the water oil guide tank oil drainage valve, the governor return oil tank oil drainage valve and the cylindrical valve return oil tank oil drainage valve in the hydro-turbine generator set are respectively connected to the oil drainage main pipe of the unit; the inlet pipeline of the oil drainage pump is connected to the oil drainage main pipe of the unit, and the outlet pipeline of the oil drainage pump is connected to the oil drainage main pipe of the workshop; the oil drainage pump oil inlet valve and the visual pipeline are respectively installed in the steel pipe between the inlet of the oil drainage pump and the oil drainage main pipe of the unit.
[0011] As a preferred solution, the unit oil drain main pipe is also connected to other oil drain pipelines for draining oil from other equipment; other oil drain valves are provided on the other oil drain pipelines. By reserving other oil drain pipelines, it is convenient to drain other oil that needs to be discharged into the oil depot.
[0012] As a preferred solution, an oil discharge pump outlet pressure gauge is installed on the outlet pipeline of the oil discharge pump, and the oil discharge status can be checked on site through the oil discharge pump outlet pressure gauge.
[0013] As a preferred solution, an outlet pressure sensor of the oil discharge pump is installed on the outlet pipeline of the oil discharge pump. The outlet pressure sensor of the oil discharge pump can provide an automatic monitoring function, and an alarm is issued when the sensor detection value exceeds a threshold.
[0014] As a preferred solution, an oil discharge pump check valve is installed on the outlet pipeline of the oil discharge pump, which can effectively prevent oil from flowing back.
[0015] As a preferred solution, an oil discharge valve of the oil discharge pump is installed on the outlet pipeline of the oil discharge pump.
[0016] As a preferred solution, a flow meter is installed on the outlet pipeline of the oil discharge pump, so that the staff can observe the operation of the oil discharge pump and the flow of oil in the pipeline through the flow meter.
[0017] As a preferred solution, the inlet pipeline and the outlet pipeline of the oil discharge pump are both realized by steel pipes, and flange connections are used at the connection points to achieve fixed connection.
[0018] As a preferred solution, the steel pipe is a D65 steel pipe.
[0019] As a preferred solution, the oil drain pump is connected to a start-stop control cabinet for starting and stopping the oil drain pump; the upper oil guide tank oil drain valve, the derived oil tank oil drain valve, the water oil guide tank oil drain valve, the governor return oil tank oil drain valve, and the cylindrical valve return oil tank oil drain valve are implemented by electric valves, and the start-stop control cabinet also includes control buttons for the upper oil guide tank oil drain valve, the derived oil tank oil drain valve, the water oil guide tank oil drain valve, the governor return oil tank oil drain valve, the cylindrical valve return oil tank oil drain valve, and the oil drain pump oil inlet valve, which are used to control the switching of the corresponding control valves.
[0020] Compared with the prior art, the beneficial effects of the utility model are:
[0021] 1. An oil drain main pipe and an oil drain pump are added to the existing oil drain pipe, which has a simple structure and is easy to implement.
[0022] 2. The operation is simple for the staff, saving time and effort, and high efficiency. One staff member can complete the entire oil drainage work.
[0023] 3. There is no need to use temporary oil drain pipes and temporary oil drain pumps, which saves a lot of manpower and time. There will be no oil spillage during the entire oil draining process, which is beneficial to environmental protection.
[0024] 4. A pressure sensor and flow meter are installed at the outlet of the oil discharge pump. The measurement results are connected to the oil discharge pump control cabinet to provide an alarm function. The oil discharge pump can be shut down urgently according to the preset alarm value to ensure the safety and reliability of the oil discharge process. A visual pipeline is installed at the oil inlet pipe of the oil discharge pump, and a mechanical pressure gauge is installed at the outlet, which is conducive to the staff to observe the operation of the oil discharge pump and the flow of oil in the pipeline.
[0025] 5. The oil drain system has other oil drain valves reserved. If the external oil of the unit needs to be discharged into the oil depot, pipes can be installed to other oil drain valves to facilitate the discharge of other oil that needs to be discharged into the oil depot.
[0026] 6. The total amount of oil discharged by the oil discharge pump can be accurately obtained through the flow meter on the system. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 The utility model is a schematic diagram of the multi-position oil tanks and hydraulic system integrated oil discharge system of the hydro-generator set.
[0028] Figure 2 It is an operation flow chart of the integrated oil discharge system of the multi-position oil tanks and hydraulic system of the hydro-generator set in one embodiment.
[0029] Figure markings: upper oil guide tank drain valve-1, derived oil tank drain valve-2, water oil guide tank drain valve-3, governor return oil tank drain valve-4, cylindrical valve return oil tank drain valve-5, other oil drain valves-6, visual pipeline-7, oil drain pump inlet valve-8, oil drain pump-9, oil drain pump outlet pressure gauge-10, oil drain pump outlet pressure sensor-11, oil drain pump outlet check valve-12, oil drain pump oil outlet valve-13, flow meter-14, upper oil guide tank oil outlet valve-15, derived oil tank oil outlet valve-16, water oil guide tank oil outlet valve-17, governor return oil tank oil outlet valve-18, cylindrical valve return oil tank oil outlet valve-19. DETAILED DESCRIPTION
[0030] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar modules or modules with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be construed as limitations on the present application. On the contrary, the embodiments of the present application include all changes, modifications and equivalents that fall within the spirit and connotation of the appended claims.
[0031] Please refer to Figure 1 This embodiment proposes a comprehensive oil drainage system for multiple oil tanks and hydraulic systems of a hydro-turbine generator set, which includes a unit oil drainage main pipe, an oil drainage pump 9, an oil drainage pump oil inlet valve 8, an oil drainage pump oil outlet valve 13 and a visual pipeline 7.
[0032] Specifically, the unit oil drain main pipe is connected with the existing upper oil guide tank oil drain pipe, derivation oil tank oil drain pipe, water oil guide tank oil drain pipe, governor oil return tank oil drain pipe, and cylinder valve oil return tank oil drain pipe arranged outside the water wheel room. Among them, the upper end of the upper oil guide tank oil drain pipe is connected to the upper oil guide tank, and is connected to the unit oil drain main pipe through the upper oil guide tank oil outlet valve 15 and the upper oil guide tank oil drain valve 1 in sequence; the upper end of the derivation oil tank oil drain pipe is connected to the derivation oil tank, and is connected to the unit oil drain main pipe through the derivation oil tank oil outlet valve 16 and the derivation oil tank oil drain valve 2 in sequence; the upper end of the water oil guide tank oil drain pipe is connected to the water oil guide tank, and is connected to the water oil guide tank oil outlet valve 17 and The water oil guide tank drain valve 3 is connected to the unit oil drain main pipe; the upper end of the governor return oil tank drain pipe is connected to the governor return oil tank, and is connected to the unit oil drain main pipe through the governor return oil tank outlet valve 18 and the governor return oil tank drain valve 4 in sequence; the upper end of the cylindrical valve return oil tank drain pipe is connected to the cylindrical valve return oil tank, and is connected to the unit oil drain main pipe through the cylindrical valve return oil tank outlet valve 19 and the cylindrical valve return oil tank drain valve 5 in sequence. At the same time, the inlet pipeline of the drain pump 9 is connected to the unit oil drain main pipe, and the outlet pipeline of the drain pump 9 is connected to the plant oil drain main pipe; the drain pump oil inlet valve 8 and the visualization pipeline 7 are respectively installed in the steel pipe between the inlet of the drain pump 9 and the unit oil drain main pipe. Among them, the drain pump oil inlet valve 8 is used to control the oil discharge of the unit oil drain main pipe, and the visualization pipeline 7 can facilitate the staff to observe the flow of oil in the pipeline. Through this system, only some valves are operated to start the oil discharge pump 9 to discharge oil. In one embodiment, an oil discharge pump oil outlet valve 13 is provided on the outlet pipeline of the oil discharge pump 9.
[0033] In one embodiment, the inlet pipeline and the outlet pipeline of the oil discharge pump 9 are both implemented with DN65 steel pipes, and are fixedly connected at the connection points with flange connections.
[0034] In order to facilitate the expansion of the oil draining use scenarios of the unit oil drain main pipe, in one embodiment, the unit oil drain main pipe is also connected to other oil drain pipelines for draining oil from other equipment. By reserving other oil drain valves 6 and pipelines, if the oil outside the unit needs to be drained into the oil depot, pipelines can be added to other oil drain valves 6 to facilitate draining other oil that needs to be drained into the oil depot.
[0035] In one embodiment, an oil discharge pump outlet pressure gauge 10 is installed on the outlet pipeline of the oil discharge pump 9. The oil discharge pump outlet pressure gauge 10 can be used to monitor the oil discharge status on site.
[0036] In one embodiment, an oil discharge pump outlet pressure sensor 11 is installed on the outlet pipeline of the oil discharge pump 9. The oil discharge pump outlet pressure sensor 11 can provide an automatic monitoring function, and an alarm is issued when the sensor detection value exceeds a threshold.
[0037] In one embodiment, a check valve of the oil discharge pump 9 is installed on the outlet pipeline of the oil discharge pump 9. The check valve of the oil discharge pump 9 can effectively prevent oil from flowing back.
[0038] In one embodiment, a flow meter 14 is installed on the outlet pipeline of the oil discharge pump 9. The flow meter 14 can help the staff to observe the operation of the oil discharge pump 9 and the flow of oil in the pipeline.
[0039] In one embodiment, the oil drain pump 9 is equipped with a start-stop control cabinet, which is provided with a start-stop button and an emergency stop button, and can emergency stop the oil drain pump 9 according to the preset alarm action values of the oil drain pump outlet pressure sensor 11 and the flow meter 14.
[0040] In order to achieve synchronous start and stop of the oil drain pump 9 and each oil drain valve, in one embodiment, the oil drain valves involved in the comprehensive oil drain system can all be implemented by electric valves, and the control of the electric valves is connected to the start and stop control cabinet, and control buttons of the corresponding oil drain valves are formed in the cabinet, so that after a command to drain oil from a certain part is given on the control cabinet, the corresponding electric valve opens to drain the oil. After the oil drain is completed, the electric valves are closed in sequence as the oil drain pump 9 stops operating.
[0041] The following is a specific example to further illustrate the comprehensive oil discharge system proposed by the utility model:
[0042] Install a rated flow of 12m near the existing water tanker outdoor drainage pipe. 3 / h, the maximum outlet pressure is 1.5Mpa gear type oil pump 9, the oil pump 9 comes with a start control cabinet. The inlet and outlet pipelines of the oil pump 9 are DN65, and are connected by flange connection. Add a new unit oil drain main pipe, and connect the outlets of the upper oil guide tank oil drain valve 1, the derivation oil tank oil drain valve 2, the water oil guide tank oil drain valve 3, the governor return oil tank oil drain valve 4, the cylinder valve return oil tank oil drain valve 5, and other oil drain valves 6 to the unit oil drain main pipe. The other end of the unit oil drain main pipe is connected to the inlet of the oil drain pump 9, and the oil drain pump inlet valve 8 and the visual pipeline 7 are installed between the unit oil drain main pipe and the inlet of the oil drain pump 9. The outlet pipeline of the oil drain pump 9 is equipped with an oil drain pump outlet pressure gauge 10, an oil drain pump outlet pressure sensor 11, an oil drain pump outlet check valve 12, an oil drain pump oil outlet valve 13, a flow meter 14 and other equipment, and finally the outlet pipeline of the oil drain pump 9 is connected to the plant oil drain main pipe.
[0043] Please refer to Figure 2 Taking the oil drainage from the oil guide groove as an example, the oil drainage operation process and working principle are introduced.
[0044] (1) Before draining the oil, check that all valves are in the closed position.
[0045] (2) Open the oil discharge pump outlet valve 13, the oil discharge pump inlet valve 8, the upper oil guide tank oil discharge valve 15, and the upper oil guide tank oil discharge valve 1 in sequence.
[0046] (3) Turn on the power of the oil drain pump 9, start the oil drain pump 9 to drain the oil, and observe whether there is oil flowing in the visual pipeline 7, whether the pressure of the oil drain pump outlet pressure gauge 10 is normal, and whether the flow of the flow meter 14 is normal.
[0047] (4) The outlet pressure sensor 11 and flow meter 14 of the oil drain pump are connected to the control cabinet of the oil drain pump 9. During the oil drain process, if the pressure value measured by the outlet pressure sensor 11 of the oil drain pump is greater than 1.0Mpa, it is judged that the outlet pipeline of the oil drain pump 9 is blocked, and the control cabinet of the oil drain pump 9 urgently stops the oil drain pump 9. During the oil drain process, if the measured value of the flow meter 14 is less than 0.2 cubic meters / h, and the pressure alarm of the outlet pressure sensor sounds, it is judged that the outlet pipeline of the oil drain is blocked or not smooth, and the control cabinet of the oil drain pump 9 urgently stops the oil drain pump 9. After the control cabinet of the oil drain pump 9 urgently stops the oil drain pump 9, the pump stop fault must be discharged before the oil drain pump 9 can be started again. During the oil drain process, if the measured value of the flow meter 14 is less than 0.2 cubic meters / h, there is no alarm for the pressure of the outlet pressure sensor, and a large number of bubbles appear in the visual pipeline 7, it is judged that the oil in the oil tank has been drained, and the control cabinet of the oil drain pump 9 urgently stops the oil drain pump 9, and the oil drain work is completed.
[0048] (5) After the oil is drained, close the oil discharge pump oil outlet valve 13, the oil discharge pump oil inlet valve 8, the upper oil guide groove oil outlet valve 15, and the upper oil guide groove oil drain valve 1 in sequence, and disconnect the power supply of the oil discharge pump 9.
[0049] The multi-position oil tank and hydraulic system integrated oil discharge system of the hydro-generator set proposed by the utility model has the following advantages:
[0050] 1. An oil drain main pipe and an oil drain pump are added to the existing oil drain pipe, which has a simple structure and is easy to implement.
[0051] 2. The operation is simple for the staff, saving time and effort, and high efficiency. One staff member can complete the entire oil drainage work.
[0052] 3. There is no need to use temporary oil drain pipes and temporary oil drain pumps, which saves a lot of manpower and time. There will be no oil spillage during the entire oil draining process, which is beneficial to environmental protection.
[0053] 4. A pressure sensor and flow meter are installed at the outlet of the oil discharge pump. The measurement results are connected to the oil discharge pump control cabinet to provide an alarm function. The oil discharge pump can be shut down urgently according to the preset alarm value to ensure the safety and reliability of the oil discharge process. A visual pipeline is installed at the oil inlet pipe of the oil discharge pump, and a mechanical pressure gauge is installed at the outlet, which is conducive to the staff to observe the operation of the oil discharge pump and the flow of oil in the pipeline.
[0054] 5. The oil drain system has reserved other oil drain valves-6. If the external oil of the unit needs to be discharged into the oil depot, a pipeline can be installed to other oil drain valves-6 to facilitate the discharge of other oil that needs to be discharged into the oil depot.
[0055] 6. The total amount of oil discharged by the oil discharge pump can be accurately obtained through the flow meter on the system.
[0056] For those skilled in the art, the specific meanings of the above terms in the present invention can be understood in specific situations; the drawings in the embodiments are used to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.
[0057] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application.
Claims
1. A multi-position oil tank and hydraulic system integrated oil discharge system for a hydro-generator set, characterized in that: The comprehensive oil drainage system includes a unit oil drain main, an oil drain pump, an oil drain pump oil inlet valve, an oil drain pump oil outlet valve and a visualization pipeline; the upper oil guide tank oil drain valve, the derived oil tank oil drain valve, the water oil guide tank oil drain valve, the governor return oil tank oil drain valve and the cylindrical valve return oil tank oil drain valve in the hydro-turbine generator set are respectively connected to the unit oil drain main; the inlet pipeline of the oil drain pump is connected to the unit oil drain main, and the outlet pipeline of the oil drain pump is connected to the plant building oil drain main; the oil drain pump oil inlet valve and the visualization pipeline are respectively installed in the steel pipe between the oil drain pump inlet and the unit oil drain main.
2. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1 is characterized in that: The unit oil drain main pipe is also connected to other oil drain pipelines for draining oil from other equipment; other oil drain valves are arranged on the other oil drain pipelines.
3. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1 is characterized in that: An oil discharge pump outlet pressure gauge is installed on the outlet pipeline of the oil discharge pump.
4. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1 is characterized in that: An oil discharge pump outlet pressure sensor is installed on the outlet pipeline of the oil discharge pump.
5. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1 is characterized in that: An oil discharge pump one-way valve is installed on the outlet pipeline of the oil discharge pump.
6. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1 is characterized in that: An oil discharge valve of the oil discharge pump is installed on the outlet pipeline of the oil discharge pump.
7. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1 is characterized in that: A flow meter is installed on the outlet pipeline of the oil discharge pump.
8. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1 is characterized in that: The inlet pipeline and the outlet pipeline of the oil discharge pump are realized by using steel pipes, and the flange connection is used at the connection point to realize fixed connection.
9. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 8, characterized in that: The steel pipe is a D65 steel pipe.
10. The multi-position oil tank and hydraulic system integrated oil discharge system of a hydro-generator set according to claim 1, characterized in that: The oil drain pump is connected to a start-stop control cabinet for starting and stopping the oil drain pump; the upper oil guide tank oil drain valve, the derived oil tank oil drain valve, the water oil guide tank oil drain valve, the governor return oil tank oil drain valve, and the cylindrical valve return oil tank oil drain valve are implemented by electric valves, and the start-stop control cabinet also includes control buttons for the upper oil guide tank oil drain valve, the derived oil tank oil drain valve, the water oil guide tank oil drain valve, the governor return oil tank oil drain valve, the cylindrical valve return oil tank oil drain valve, and the oil drain pump oil inlet valve, which are used to control the switching of the corresponding control valves.