Energy accumulator pipeline device for lubricating oil of water feeding pump steam turbine

Abstract

The utility model discloses an energy accumulator pipeline device for lubricating oil of a water feed pump turbine, which belongs to the technical field of energy accumulators and comprises an oil supply pipeline, an energy accumulator and an oil inlet component, the oil supply pipeline is connected between a main oil tank and the water feed pump turbine and is connected with the energy accumulator through the oil inlet component, and the energy accumulator is connected with the oil supply pipeline through the oil inlet component. The oil inlet assembly comprises an oil inlet main pipe, an oil inlet branch pipe and an oil inlet pipeline. The lubricating oil supply system has the advantages that the energy accumulator is connected to the oil supply pipeline between the lubricating oil main oil tank and the water feed pump turbine, the oil supply pressure of lubricating oil can be kept stable through the energy accumulator, the oil supply efficiency is improved, meanwhile, the controllable oil inlet main pipe and the controllable oil inlet branch pipe are arranged in front of the oil inlet pipeline of the energy accumulator, and the energy accumulator is convenient to use. The standby oil inlet branch pipe can be started when needed, so that a worker can control oil pressure conveniently, the influence of the oil inlet amount on the oil pressure of the system is reduced when oil is injected into the lubricating oil energy accumulator of the water pump turbine, and the stability and safety of the oil supply system are greatly enhanced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of energy accumulator, specifically, a kind of energy accumulator pipeline device for lubricating oil of feed water pump steam turbine. BACKGROUND

[0002] Energy accumulator is a kind of energy storage device in hydraulic pneumatic system. It transforms the energy in system into compressed energy or potential energy at appropriate time and stores, when system needs, it transforms compressed energy or potential energy into hydraulic pressure or air pressure and releases, to supply system again. When system pressure increases instantaneously, it can absorb this part of energy, to ensure that the pressure of entire system is normal.

[0003] As important auxiliary equipment of lubricating oil system of feed water pump steam turbine, lubricating oil energy accumulator is generally installed on the side of oil tank and connected with pump and system, can absorb high-frequency pulsation component of pump outlet pressure, to maintain oil pressure stable. When lubricating oil energy accumulator acts, it has greater influence on lubricating oil pressure of feed water pump steam turbine, and when serious, it can cause unit to be stopped due to sudden decrease of lubricating oil pressure.

[0004] In prior art, there is lack of safe and stable lubricating oil energy accumulator device, when measuring pressure of lubricating oil energy accumulator of feed water pump steam turbine, it is easy to cause lubricating oil pressure fluctuation, and there is lack of pressure safety monitoring structure and pressure reducing structure for connecting pipeline, and its practicability and durability need to be improved. In addition, the utility model patent with announcement number CN210107014U discloses a kind of lubricating oil energy accumulator, mainly including equipment cylinder, vent line, inert gas line, float valve, liquid level meter line, pressure gauge line, lubricating oil line, its feature is that the float valve is composed of float, float connecting arm, gland, sealing gasket, sealing ring, short circuit, hinge, limit stop lever, it lacks pressure safety monitoring structure and pressure reducing structure for connecting pipeline, and its practicability and durability need to be improved. UTILITY MODEL CONTENTS

[0005] To overcome the problems of lack of safe and stable lubricating oil energy accumulator device, lack of pressure safety monitoring structure and pressure reducing structure for connecting pipeline, and need to improve practicability and durability in prior art, the utility model provides a kind of energy accumulator pipeline device for lubricating oil of feed water pump steam turbine, including oil supply pipeline, energy accumulator and oil inlet component, the oil supply pipeline is connected between main oil tank and feed water pump steam turbine, the oil supply pipeline is connected energy accumulator by oil inlet component, the oil inlet component includes oil inlet main pipe, oil inlet branch pipe and oil inlet pipeline, the bottom of the energy accumulator is connected with oil inlet pipeline, the outer wall of the oil inlet pipeline far from the one end of the energy accumulator is connected with oil inlet main pipe and oil inlet branch pipe respectively, the oil inlet main pipe and oil inlet branch pipe are communicated with the oil supply pipeline by energy storage connecting pipe, needle valve for control is respectively arranged on the oil inlet main pipe and oil inlet branch pipe.

[0006] The accumulator is connected to the oil supply pipeline between the main oil tank of lubricating oil and the feed water pump turbine, the lubricating oil supply oil pressure can be maintained stable through the accumulator, the oil supply efficiency is improved, meanwhile, the controllable oil inlet main pipe and the oil inlet branch pipe are arranged in front of the oil inlet pipeline of the accumulator, the oil inlet branch pipe can be started as a backup when needed, so as to facilitate the staff to control the oil pressure, reduce the influence of the oil inlet amount on the system oil pressure when the feed water pump turbine lubricating oil accumulator is filled, and the stability and safety of the oil supply system are greatly improved.

[0007] Preferably, an oil pressure gauge is arranged in the middle of the oil inlet pipeline, and a detection end of the oil pressure gauge is arranged on the inner wall of the oil inlet pipeline.

[0008] Preferably, an electromagnetic valve is arranged on the middle of the outer wall of the oil inlet main pipe and the oil inlet branch pipe respectively.

[0009] Preferably, a safety warning assembly is arranged on the oil supply pipeline, the safety warning assembly comprises a control box, an alarm and a pressure detector, the control box is arranged outside the oil supply pipeline, the pressure detector is arranged in the control box, the pressure detector is arranged at the connection between the oil supply pipeline and the accumulator connecting pipeline, and the alarm is arranged on the top of the control box.

[0010] The safety warning assembly arranged between the oil supply pipeline and the accumulator connecting pipeline can monitor the internal pressure of the pipeline through the pressure detector, and the alarm can send an alarm in an abnormal state to remind the staff to handle it in time, thereby further improving the safety of the device and the oil supply system.

[0011] Preferably, a display is arranged on the middle of the front of the control box, the display and the alarm are electrically connected with the pressure detector, and a detection end of the pressure detector is arranged on the inner wall of the connection between the oil supply pipeline and the accumulator connecting pipeline.

[0012] Preferably, a flow meter is arranged on the end of the oil supply pipeline close to the feed water pump turbine.

[0013] Preferably, a reinforcing sleeve is arranged outside the oil supply pipeline, and a thermal insulation layer is arranged between the reinforcing sleeve and the oil supply pipeline.

[0014] The reinforcing sleeve and the thermal insulation layer arranged on the oil supply pipeline can improve the strength of the pipeline, prevent the pipeline from being damaged and broken, improve the thermal insulation performance, maintain the constant temperature of the lubricating oil, prevent the lubricating oil from condensing, and ensure the smooth supply of the lubricating oil.

[0015] Preferably, a corrosion-resistant layer is arranged on the inner wall of the oil supply pipeline.

[0016] Preferably, one end of the energy storage connecting pipe is fixedly communicated with the oil supply pipeline, and the other end of the energy storage connecting pipe is communicated with the oil inlet main pipe and the oil inlet branch pipe.

[0017] Preferably, the inner walls of the oil inlet main pipe, the oil inlet branch pipe and the oil inlet pipeline are provided with corrosion-resistant coatings.

[0018] Through the corrosion-resistant coatings around the pipes, the corrosion resistance of the pipes can be improved, and the service life can be prolonged.

[0019] Beneficial effects:

[0020] The beneficial effects of the technical scheme of the utility model are as follows:

[0021] (1) The energy storage device is connected to the oil supply pipeline between the lubricating oil main tank and the water pump turbine, the lubricating oil supply pressure can be maintained stable by the energy storage device, the oil supply efficiency is improved, and the oil inlet main pipe and the oil inlet branch pipe are arranged in front of the energy storage device, the oil inlet branch pipe can be started as a backup when needed, so that the oil pressure can be controlled by the staff, the influence of the oil inlet amount on the system oil pressure during the lubricating oil energy storage device oil injection of the water pump turbine is reduced, and the stability and safety of the oil supply system are greatly improved.

[0022] (2) The safety warning assembly arranged between the oil supply pipeline and the energy storage connecting pipeline can monitor the internal pressure of the pipeline through the pressure detector, and the alarm can send an alarm in an abnormal state to remind the staff to handle it in time, and the safety of the device and the oil supply system is further improved.

[0023] (3) The reinforcing sleeve and the heat preservation layer arranged on the oil supply pipeline can improve the strength of the pipeline, prevent the pipeline from being damaged and broken, improve the heat preservation performance, maintain the constant temperature of the lubricating oil, prevent the lubricating oil from condensing, and ensure the smooth supply of the lubricating oil. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments, and it should be understood that the following drawings only show some embodiments of the utility model, and should not be regarded as a limitation to the scope, and for those skilled in the art, other related drawings can be obtained without creative labor.

[0025] Fig. 1 It is the overall structure schematic view of the water pump turbine lubricating oil energy storage device of the utility model;

[0026] Fig. 2 It is the internal structure schematic view of the water pump turbine lubricating oil energy storage device of the utility model;

[0027] Fig. 3 is the internal structure schematic view of the oil supply pipeline of the water pump turbine lubricating oil accumulator device.

[0028] In the figure: 1, main oil tank; 2, oil supply pipeline; 3, accumulator; 4, main oil inlet pipe; 5, branch oil inlet pipe; 6, accumulator connecting pipe; 7, control box; 8, alarm; 9, display; 10, oil inlet pipeline; 11, needle valve; 12, electromagnetic valve; 13, pressure detector; 14, thermal insulation layer; 15, corrosion-resistant layer; 16, reinforcing sleeve; 17, oil pressure gauge; 18, flow meter. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of the present application.

[0030] The present embodiment can maintain the lubricating oil supply oil pressure stable by connecting the accumulator to the oil supply pipeline between the lubricating oil main tank and the water pump turbine, improve the oil supply efficiency, and at the same time, the controllable main oil inlet pipe and branch oil inlet pipe are arranged in front of the accumulator oil inlet pipeline, which can start the branch oil inlet pipe as a backup when needed, so as to facilitate the operator to control the oil pressure, reduce the influence of the oil inlet amount on the system oil pressure when the water pump turbine lubricating oil accumulator is filled, and greatly improve the stability and safety of the oil supply system. The specific embodiments are as follows:

[0031] As Figs. 1 to 3As shown, a kind of feed pump turbine lubricating oil accumulator pipeline device, including oil supply pipeline 2, accumulator 3 and oil inlet assembly, oil supply pipeline 2 is connected between main oil tank 1 and feed pump turbine, oil supply pipeline 2 is connected accumulator 3 by oil inlet assembly, and oil inlet assembly includes oil inlet main pipe 4, oil inlet branch pipe 5 and oil inlet pipeline 10, the bottom of accumulator 3 is connected with oil inlet pipeline 10, the outer wall of the end of oil inlet pipeline 10 away from accumulator 3 is connected with oil inlet main pipe 4 and oil inlet branch pipe 5 respectively, and oil inlet main pipe 4 and oil inlet branch pipe 5 are communicated with oil supply pipeline 2 by energy storage connecting pipe 6, and the needle valve 11 for control is respectively arranged on oil inlet main pipe 4 and oil inlet branch pipe 5.Connecting accumulator 3 on the oil supply pipeline 2 between lubricating oil main oil 1 and feed pump turbine, can maintain lubricating oil supply oil pressure stable by accumulator 3, improve oil supply efficiency, and simultaneously, the controllable oil inlet main pipe 4 and oil inlet branch pipe 5 are arranged in front of the oil inlet pipeline 10 of accumulator 3, the oil inlet branch pipe 5 as backup can be started when needed, so as to facilitate staff to control oil pressure, reduce the influence of oil inlet amount on system oil pressure when feed pump turbine lubricating oil accumulator 3 is filled, and the stability and safety of oil supply system are greatly strengthened.

[0032] The middle part of oil inlet pipeline 10 is provided with oil pressure gauge 17, and the detection end of oil pressure gauge 17 is arranged on the inner wall of oil inlet pipeline 10.Through oil pressure gauge 17, the oil pressure in oil inlet pipeline 10 can be displayed, which is convenient for staff to control and manage.

[0033] The middle part of the outer wall of oil inlet main pipe 4 and oil inlet branch pipe 5 is respectively provided with electromagnetic valve 12.Through electromagnetic valve 12, the needle valve 11 arranged on oil inlet main pipe 4 and oil inlet branch pipe 5 can be matched, so that staff can better control the use of oil inlet main pipe 4 and oil inlet branch pipe 5.

[0034] Safety warning assembly is installed on oil supply pipeline 2, and the safety warning assembly includes control box 7, alarm 8 and pressure detector 13, control box 7 is installed on the outside of oil supply pipeline 2, pressure detector 13 is arranged in the inside of control box 7, pressure detector 13 is installed at the connection between oil supply pipeline 2 and energy storage connecting pipe 6, and alarm 8 is installed on the top of control box 7.Through the safety warning assembly arranged between the connecting pipeline of oil supply pipeline 2 and accumulator 3, the internal pressure of pipeline can be monitored by pressure detector 13, and alarm 8 can send alarm in abnormal state, so as to remind staff to handle in time, and the safety of device and oil supply system is further improved.

[0035] The middle part of the front of control box 7 is provided with display 9, and display 9 and alarm 8 are electrically connected with pressure detector 13, and the detection end of pressure detector 13 is arranged on the inner wall at the connection between oil supply pipeline 2 and energy storage connecting pipe 6.Through display 9, the pressure value monitored by pressure detector 13 can be displayed, which is convenient for staff to check and manage.

[0036] The flow meter 18 is arranged on the oil supply pipeline 2 near the water pump turbine. The flow meter 18 can detect the oil supply amount, and improve the pipeline practicability.

[0037] The oil supply pipeline 2 is externally provided with the reinforcing sleeve 16, and the reinforcing sleeve 16 and the oil supply pipeline 2 are provided with the heat preservation layer 14. The reinforcing sleeve 16 and the heat preservation layer 14 arranged on the oil supply pipeline 2 can improve the pipeline strength, prevent the pipeline from being damaged and broken, improve the heat preservation performance, maintain the constant temperature of the lubricating oil, prevent the lubricating oil from being condensed, and ensure the smooth lubricating oil supply. The reinforcing sleeve 16 and the heat preservation layer 14 are also arranged on the outside of the oil inlet pipeline 10, the oil inlet main pipeline 4 and the oil inlet branch pipeline 5.

[0038] The inner wall of the oil supply pipeline 2 is provided with the corrosion-resistant layer 15. The corrosion-resistant layer 15 can improve the corrosion resistance of the inner wall of the pipeline, and prolong the service life of the pipeline.

[0039] One end of the energy storage connecting pipeline 6 is fixedly communicated with the oil supply pipeline 2, and the other end of the energy storage connecting pipeline 6 is communicated with the oil inlet main pipeline 4 and the oil inlet branch pipeline 5. The energy storage connecting pipeline 6 can facilitate the connection between the energy storage device 3 and the oil supply pipeline.

[0040] The inner walls of the oil inlet main pipeline 4, the oil inlet branch pipeline 5 and the oil inlet pipeline 10 are provided with the corrosion-resistant coating. The corrosion-resistant coating can improve the corrosion resistance of the pipeline and prolong the service life of the pipeline.

[0041] Working principle: The energy storage device is connected to the oil supply pipeline between the lubricating oil main tank and the water pump turbine. The energy storage device can maintain the stable lubricating oil supply pressure, improve the oil supply efficiency, and start the oil inlet branch pipeline as a backup when needed. The oil inlet branch pipeline can facilitate the staff to control the oil pressure, reduce the influence of the oil inlet amount on the system oil pressure during the lubricating oil storage of the water pump turbine, greatly improve the stability and safety of the oil supply system. The safety warning assembly arranged between the oil supply pipeline and the energy storage connecting pipeline can detect the internal pressure of the pipeline through the pressure detector, and the alarm can issue an alarm in an abnormal state to remind the staff to handle it in time, further improving the safety of the device and the oil supply system. The reinforcing sleeve and the heat preservation layer arranged on the oil supply pipeline can improve the pipeline strength, prevent the pipeline from being damaged and broken, improve the heat preservation performance, maintain the constant temperature of the lubricating oil, prevent the lubricating oil from being condensed, and ensure the smooth lubricating oil supply.

[0042] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An accumulator pipeline device for lubricating oil in a feedwater pump turbine, characterized in that, The system includes an oil supply pipeline (2), an accumulator (3), and an oil inlet assembly. The oil supply pipeline (2) is connected between the main oil tank (1) and the feedwater pump turbine. The oil supply pipeline (2) is connected to the accumulator (3) through the oil inlet assembly. The oil inlet assembly includes an oil inlet main pipe (4), an oil inlet branch pipe (5), and an oil inlet pipeline (10). The bottom of the accumulator (3) is connected to the oil inlet pipeline (10). The outer wall of the oil inlet pipeline (10) away from the accumulator (3) is connected to the oil inlet main pipe (4) and the oil inlet branch pipe (5), respectively. The oil inlet main pipe (4) and the oil inlet branch pipe (5) are both connected to the oil supply pipeline (2) through an energy storage connecting pipe (6). The oil inlet main pipe (4) and the oil inlet branch pipe (5) are respectively equipped with needle valves (11) for control.

2. The accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, An oil pressure gauge (17) is installed in the middle of the oil inlet pipe (10), and the detection end of the oil pressure gauge (17) is located on the inner wall of the oil inlet pipe (10).

3. The accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, Solenoid valves (12) are respectively installed on the middle part of the outer wall of the main oil inlet pipe (4) and the branch oil inlet pipe (5).

4. The accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, A safety warning component is installed on the oil supply pipeline (2). The safety warning component includes a control box (7), an alarm (8), and a pressure detector (13). The control box (7) is installed outside the oil supply pipeline (2). The pressure detector (13) is installed inside the control box (7). The pressure detector (13) is installed at the connection between the oil supply pipeline (2) and the energy storage connecting pipe (6). An alarm (8) is installed on the top of the control box (7).

5. The accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 4, characterized in that, The control box (7) has a display (9) installed in the middle of the front. The display (9) and the alarm (8) are both electrically connected to the pressure detector (13). The detection end of the pressure detector (13) is located on the inner wall of the connection between the oil supply pipe (2) and the energy storage connection pipe (6).

6. The accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, A flow meter (18) is installed on the oil supply pipeline (2) at one end near the feedwater pump turbine.

7. The accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, The oil supply pipe (2) is provided with a reinforcing sleeve (16) on the outside, and an insulation layer (14) is provided between the reinforcing sleeve (16) and the oil supply pipe (2).

8. The accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, The inner wall of the oil supply pipeline (2) is provided with a corrosion-resistant layer (15).

9. An accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, One end of the energy storage connecting pipe (6) is fixedly connected to the oil supply pipe (2), and the other end of the energy storage connecting pipe (6) is connected to the main oil inlet pipe (4) and the branch oil inlet pipe (5).

10. An accumulator pipeline device for lubricating oil in a feedwater pump turbine according to claim 1, characterized in that, The inner walls of the main oil inlet pipe (4), the branch oil inlet pipe (5), and the oil inlet pipeline (10) are all provided with a corrosion-resistant coating.

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