Turbine oil pump protection system

Abstract

The utility model belongs to the technical field of steam turbines, and provides a steam turbine oil pump protection system which comprises an oil pump body and a pressure stabilizing box, the output end of the oil pump body is communicated with the pressure stabilizing box, and the interior of the pressure stabilizing box is divided into a first cavity and a second cavity through a partition plate. And an oil outlet pipe communicated with the first cavity and the second cavity is fixedly mounted on the partition plate. The technical problems that in the prior art, oil leakage cannot be solved in time, oil supply is stopped, and the working pressure of an oil pump is unstable are solved. Compared with the prior art, the engine oil pump has the advantages that pressure fluctuation of the engine oil pump body is avoided, the stability of engine oil pressure is improved when the engine oil pump body works, the damage probability of the engine oil pump body is reduced, multi-path engine oil leakage detection is achieved, the probability that engine oil leakage is not detected is reduced, and the safety of the device in use is improved; operation of the oil pump body is controlled through the steam turbine interlocking shutdown unit, so that continuous oil supply of the oil pump body after accidents is avoided.

Description

Technical Field

[0001] This utility model belongs to the field of steam turbine technology, and in particular relates to a steam turbine oil pump protection system. Background Technology

[0002] A steam turbine, also known as a steam engine, is a rotary steam power unit. High-temperature, high-pressure steam passes through a fixed nozzle, becomes an accelerated airflow, and is then injected onto blades, causing a rotor equipped with rows of blades to rotate and perform work. Steam turbines are the main equipment in modern thermal power plants and are also used in the metallurgical industry, chemical industry, and ship propulsion systems.

[0003] The supply of oil is crucial during the operation of a steam turbine. Oil is supplied by an oil pump to lubricate various components of the turbine. However, existing oil pumps suffer from unstable operating pressure due to the unstable system pressure, leading to inconsistent pump operation and increasing the probability of pump damage. Furthermore, when external oil supply pipelines are damaged, the interlocking mechanism cannot stop the oil pump, increasing the risk of oil leakage. Oil leakage can cause fires under high temperatures, further increasing the danger of the equipment. Utility Model Content

[0004] The purpose of this utility model is to provide a turbine oil pump protection system, which aims to solve the technical problems in the prior art of not being able to promptly resolve oil leakage and stop oil supply, as well as the unstable working pressure of the oil pump.

[0005] This utility model is implemented as follows: a turbine oil pump protection system includes an oil pump body and a pressure stabilizing box. The output end of the oil pump body is connected to the pressure stabilizing box. The pressure stabilizing box is divided into a first chamber and a second chamber by a partition. An oil outlet pipe connecting the first chamber and the second chamber is fixedly installed on the partition. A pressure stabilizing component for applying pressure to the outlet of the oil outlet pipe is provided in the second chamber. An oil supply pipe connected to the second chamber is fixedly installed on the pressure stabilizing box.

[0006] A further technical solution: An oil unloading pipe communicating with the first cavity is fixedly installed on the voltage regulator box, and a solenoid valve is installed on the oil unloading pipe.

[0007] A further technical solution: A first pressure gauge for detecting the oil pressure in the first chamber is fixedly installed on the voltage regulator box.

[0008] A further technical solution: A flow meter and a second pressure gauge for detecting the oil pressure in the pipeline are fixedly installed on the oil supply pipe.

[0009] A further technical solution: The voltage stabilizing component includes an installation tube, a sliding plate is slidably installed inside the installation tube, a telescopic rod is fixedly installed on the surface of the sliding plate near the partition, a baffle is fixedly installed on the end of the telescopic rod away from the sliding plate, and an elastic element for applying pressure to the baffle is fixedly installed on the sliding plate.

[0010] A further technical solution: The side wall of the voltage regulator box is provided with a through hole communicating with the mounting pipe, and a rubber sealing sleeve that seals the through hole is fixedly installed inside the mounting pipe. A bracket is provided on the side wall of the voltage regulator box, and a threaded rod is threadedly installed on the bracket. The threaded rod drives the limiting cylinder to move. The limiting cylinder extends into the rubber sealing sleeve from the through hole, and the outer wall of the limiting cylinder slides in contact with the inner wall of the through hole. A permanent magnet that attracts the sliding plate is fixedly installed at the end of the limiting cylinder.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0012] 1. By applying stable pressure to the oil outlet pipe through a pressure stabilizing component, the oil outlet pressure is ensured to remain stable. This allows the oil pump body to output oil at a constant pressure, preventing pressure fluctuations and improving the stability of oil pressure during operation, thus reducing the probability of oil pump damage.

[0013] 2. When an external pipeline ruptures, the oil pressure in the oil supply pipe will decrease while the flow rate will increase. Based on feedback from the flow meter and the second pressure gauge, the oil pump body will be shut down to prevent continuous oil leakage. This achieves multi-path detection of oil leaks, reduces the probability of undetected oil leaks, and improves the safety of the device during use.

[0014] 3. By controlling the operation of the oil pump body through the turbine interlock shutdown unit, the oil pump body can be prevented from continuously supplying oil after an accident, thereby reducing oil leakage and preventing accidents caused by oil leakage. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0016] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0017] Figure 3 for Figure 2 A magnified view of region A1 in the middle.

[0018] In the attached diagram: 1. Oil pump body; 2. Pressure stabilizing box; 3. Baffle plate; 4. Oil outlet pipe; 5. First pressure gauge; 6. Oil discharge pipe; 7. Solenoid valve; 8. Oil supply pipe; 9. Flow meter; 10. Second pressure gauge; 11. Mounting pipe; 12. Slide plate; 13. Telescopic rod; 14. Baffle plate; 15. Elastic element; 16. Bracket; 17. Threaded rod; 18. Limiting cylinder; 19. Permanent magnet; 20. Rubber sealing sleeve; 21. First cavity; 22. Second cavity; 23. Pressure stabilizing assembly. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0020] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.

[0021] like Figures 1-3 As shown, this utility model provides a turbine oil pump protection system, including an oil pump body 1 and a pressure stabilizing box 2. The output end of the oil pump body 1 is connected to the pressure stabilizing box 2. The pressure stabilizing box 2 is divided into a first cavity 21 and a second cavity 22 by a partition 3. An oil outlet pipe 4 connecting the first cavity 21 and the second cavity 22 is fixedly installed on the partition 3. A pressure stabilizing component 23 for applying pressure to the outlet of the oil outlet pipe 4 is provided in the second cavity 22. An oil supply pipe 8 connected to the second cavity 22 is fixedly installed on the pressure stabilizing box 2.

[0022] In practical application, this embodiment connects to the external oil pipeline via the oil supply pipe 8. The pressure of the pressure stabilizing component 23 on the outlet of the oil pipe 4 is adjusted according to the working pressure range of the oil pump body 1. The oil pump body 1 draws oil and delivers it to the pressure stabilizing box 2. The oil enters the first chamber 21. Since the outlet of the oil pipe 4 is pressurized, the oil fills the first chamber 21 and pushes open the pressure stabilizing component 23 under pressure. Then the oil fills the second chamber 22 and is delivered to the external oil pipeline via the oil supply pipe 8. The pressure stabilizing component 23 applies stable pressure to the oil pipe 4 to ensure stable oil pressure. This allows the oil pump body 1 to always output under stable pressure, avoids pressure fluctuations in the oil pump body 1, improves the stability of oil pressure during operation, and reduces the probability of damage to the oil pump body 1.

[0023] The oil pump body 1 is interlocked with the steam turbine. The operation of the oil pump body 1 is associated with the following three sets of limiting conditions: when the steam turbine operation signal is lost, when the quick-closing valve is received, and when the control oil pressure is lower than 0.7MPa, the three-choice two-interlock shutdown unit controls the operation of the oil pump body 1, thereby preventing the oil pump body 1 from continuously supplying oil after an accident, reducing oil leakage, and preventing oil leakage from causing an accident.

[0024] like Figure 1 , Figure 2 As shown, this utility model provides a turbine oil pump protection system. An oil unloading pipe 6 connected to the first cavity 21 is fixedly installed on the pressure stabilizing box 2, and a solenoid valve 7 is provided on the oil unloading pipe 6.

[0025] Specifically, a first pressure gauge 5 for detecting the oil pressure inside the first chamber 21 is fixedly installed on the voltage regulator box 2.

[0026] Specifically, a flow meter 9 and a second pressure gauge 10 for detecting the oil pressure in the pipeline are fixedly installed on the oil supply pipe 8.

[0027] In practical application, the engine oil flows through the first chamber 21. The pressure of the engine oil in the first chamber 21 is detected by the first pressure gauge 5. Based on the display result of the first pressure gauge 5, the pressure applied to the oil outlet pipe 4 by the pressure stabilizing component 23 is adjusted. The pressure of the engine oil in the oil supply pipe 8 is detected by the second pressure gauge 10, and the flow rate of the engine oil in the oil supply pipe 8 is detected by the flow meter 9. When the external pipeline is ruptured, the pressure of the engine oil in the oil supply pipe 8 will decrease, and the flow rate will increase. Based on the feedback from the flow meter 9 and the second pressure gauge 10, the oil pump body 1 is shut off to prevent continuous leakage of engine oil.

[0028] like Figures 1-3 As shown, this utility model provides a turbine oil pump protection system. The pressure stabilizing component 23 includes an installation pipe 11, a sliding plate 12 is slidably installed inside the installation pipe 11, a telescopic rod 13 is fixedly installed on the surface of the sliding plate 12 near the partition 3, a baffle 14 is fixedly installed at the end of the telescopic rod 13 away from the sliding plate 12, and an elastic element 15 for applying pressure to the baffle 14 is fixedly installed on the sliding plate 12.

[0029] Specifically, the side wall of the voltage regulator box 2 has a through hole that communicates with the mounting tube 11, and a rubber sealing sleeve 20 that closes the through hole is fixedly installed inside the mounting tube 11. A bracket 16 is provided on the side wall of the voltage regulator box 2, and a threaded rod 17 is threadedly installed on the bracket 16. The threaded rod 17 drives the limiting cylinder 18 to move. The limiting cylinder 18 extends into the rubber sealing sleeve 20 from the through hole, and the outer wall of the limiting cylinder 18 slides in contact with the inner wall of the through hole. A permanent magnet 19 that is attracted to the sliding plate 12 is fixedly installed at the end of the limiting cylinder 18.

[0030] In practical application, rotating the threaded rod 17 drives the limiting cylinder 18 to move. When the limiting cylinder 18 moves into the mounting tube 11, it pushes the sliding plate 12 to move towards the partition 3. As a result, the sliding plate 12 further compresses the elastic element 15. At this time, the pressure of the baffle 14 on the oil outlet pipe 4 increases, and conversely, the pressure of the baffle 14 on the oil outlet pipe 4 decreases. This allows the oil outlet pressure of the oil outlet pipe 4 to be adjusted, thus ensuring that the oil outlet pressure of the oil outlet pipe 4 is within the working pressure range of the oil pump body 1. By applying stable pressure to the oil outlet pipe 4 through the baffle 14, the oil outlet pressure is ensured to be stable. This ensures that the oil pump body 1 always outputs under stable pressure, avoids pressure fluctuations in the oil pump body 1, improves the stability of the oil pressure during operation, and reduces the probability of damage to the oil pump body 1. The permanent magnet 19 attracts the sliding plate 12, increasing the stability of the connection between the limiting cylinder 18 and the sliding plate 12 and ensuring the pressure stabilization effect. The rubber sealing sleeve 20 ensures the sealing of the pressure stabilizing box 2 and prevents oil leakage.

[0031] In one example of this utility model, the elastic element 15 is a spring, but it can also be other elastic components such as a bouncy ball, which applies pressure to the baffle 14 through spring deformation.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A turbine oil pump protection system, comprising an oil pump body (1) and a voltage regulator box (2), wherein the output end of the oil pump body (1) is connected to the voltage regulator box (2), characterized in that, The pressure stabilizing box (2) is divided into a first cavity (21) and a second cavity (22) by a partition (3). An oil outlet pipe (4) connecting the first cavity (21) and the second cavity (22) is fixedly installed on the partition (3). A pressure stabilizing component (23) for applying pressure to the outlet of the oil outlet pipe (4) is provided in the second cavity (22). An oil supply pipe (8) communicating with the second cavity (22) is fixedly installed on the pressure stabilizing box (2).

2. The turbine oil pump protection system according to claim 1, characterized in that, The voltage regulator box (2) is fixedly installed with an oil unloading pipe (6) that communicates with the first cavity (21), and an oil unloading pipe (6) is provided with a solenoid valve (7).

3. The turbine oil pump protection system according to claim 2, characterized in that, A first pressure gauge (5) for detecting the oil pressure in the first cavity (21) is fixedly installed on the pressure regulator box (2).

4. The turbine oil pump protection system according to claim 1, characterized in that, A flow meter (9) and a second pressure gauge (10) for detecting the oil pressure in the pipeline are fixedly installed on the oil supply pipe (8).

5. A turbine oil pump protection system according to claim 1, characterized in that, The voltage stabilizing assembly (23) includes a mounting tube (11), a sliding plate (12) is slidably mounted inside the mounting tube (11), a telescopic rod (13) is fixedly mounted on the surface of the sliding plate (12) near the partition (3), a baffle (14) is fixedly mounted on the end of the telescopic rod (13) away from the sliding plate (12), and an elastic element (15) for applying pressure to the baffle (14) is fixedly mounted on the sliding plate (12).

6. A turbine oil pump protection system according to claim 5, characterized in that, The voltage regulator box (2) has a through hole on its side wall that communicates with the mounting tube (11), and a rubber sealing sleeve (20) that seals the through hole is fixedly installed inside the mounting tube (11). A bracket (16) is provided on the side wall of the voltage regulator box (2), and a threaded rod (17) is threadedly installed on the bracket (16). The threaded rod (17) drives the limiting cylinder (18) to move. The limiting cylinder (18) extends into the rubber sealing sleeve (20) from the through hole, and the outer wall of the limiting cylinder (18) slides in contact with the inner wall of the through hole. A permanent magnet (19) that is attracted to the sliding plate (12) is fixedly installed at the end of the limiting cylinder (18).

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