Oil cooler switching system

Abstract

The invention discloses an oil cooler switching system which comprises two oil coolers, a first oil cooler and a second oil cooler, the first oil cooler and the second oil cooler are arranged side by side, and the first oil cooler and the second oil cooler are each provided with an oil inlet, an oil return opening, a water inlet and a water return opening. A water circulation pipeline and an oil circulation pipeline are arranged between the oil cooler I and the oil cooler II; the device is simple in structure and convenient to use, and has a larger adjusting space to ensure that the temperature of lubricating oil is within a required range under the conditions of different water temperatures and different oil temperatures, so that the working efficiency is greatly improved, and the labor cost is saved.

Description

Technical Field

[0001] The invention relates to the technical field of oil cooler switching systems, in particular to an oil cooler switching system. Background Art

[0002] In the power system, the safe and stable operation of the steam turbine has strict requirements on the temperature of the lubricating oil, which usually needs to be controlled at 35-45°C. However, fluctuations in ambient temperature can have a significant impact on the temperature of the lubricating oil.

[0003] When operating, traditional oil coolers are mainly based on the working principle of surface heat exchangers, allowing media of different temperatures to flow inside and outside the copper tube to achieve heat conduction to cool the lubricating oil. However, in summer, when the ambient temperature is high, a single oil cooler often cannot meet the operating requirements of the steam turbine, resulting in high oil temperature, which affects the normal operation of the equipment.

[0004] In winter, the ambient temperature and cooling water temperature are both low. If the operation mode is improper, it may cause energy waste and cost increase. In addition, the previous equipment often requires more manual operation when controlling the oil temperature, which increases the labor intensity of the personnel. At the same time, the complex design of the device also brings difficulties and high costs for installation and subsequent maintenance. In order to solve the above problems, an oil cooler switching system is proposed. Summary of the invention

[0005] The purpose of the present invention is to solve the above problems and provide an oil cooler switching system.

[0006] The specific scheme of the present invention is: an oil cooler switching system, comprising: Two oil coolers, oil cooler 1 and oil cooler 2, the oil cooler 1 and oil cooler 2 are arranged side by side, the oil cooler 1 and oil cooler 2 are both provided with an oil inlet, an oil return port, a water inlet, and a water return port; a water circulation pipeline and an oil circulation pipeline are provided between the oil cooler 1 and the oil cooler 2; The water circulation pipeline includes: a water inlet main pipe, the water inlet main pipe is connected to a pipe 1 and a pipe 2, the pipe 1 is connected to the water inlet of the oil cooler 1, and a valve body is provided on the pipe 1; the return port of the oil cooler 1 is connected to a pipe 3, and the other end of the pipe 3 is connected to the return water main pipe; the pipe 2 is connected to the water inlet of the oil cooler 2; and a valve body is provided on the pipe 2, a pipe 4 is provided between the pipes 2 and 3, one end of the pipe 4 is connected to the pipe 3, and the other end is connected to the pipe 2, and a valve body is provided on the pipe 4; the return port of the oil cooler 2 is connected to a pipe 5, the other end of the pipe 5 is connected to the return water main pipe, and a valve body is provided on the pipe 5; The oil circulation pipeline includes: an oil inlet main pipe, to which pipe six and pipe seven are connected, the pipe six is ​​connected to the oil inlet of the oil cooler one, and a valve body is provided on the pipe six; the oil return port of the oil cooler one is connected to pipe eight, the other end of the pipe eight is connected to the oil return main pipe, the pipe seven is connected to the oil inlet of the oil cooler two; and a valve body is provided on the pipe seven, a pipe nine is provided between the pipes seven and eight, one end of the pipe nine is connected to the pipe seven, and the other end is connected to the pipe eight, and a valve body is provided on the pipe nine; the oil return port of the oil cooler two is connected to pipe ten, the other end of the pipe ten is connected to the oil return main pipe, and a valve body is provided on the pipe ten.

[0007] Furthermore, the valve body is a solenoid valve, which is connected to a PLC controller via a signal line. One end of the PLC controller is connected to a remote control platform, which is used to control the corresponding solenoid valve to open or close via the PLC controller.

[0008] Furthermore, the PLC controller is also connected to a temperature sensor and a pressure sensor. The temperature sensors are respectively arranged on the oil inlet main pipe, oil return main pipe, water inlet main pipe and water return main pipe for real-time monitoring of the temperature of the oil and water; the pressure sensors are respectively arranged on the oil inlet main pipe, oil return main pipe, water inlet main pipe and water return main pipe for real-time monitoring of the pressure of the oil and water; the PLC controller automatically controls the corresponding solenoid valve to open or close according to the data fed back by the temperature sensor and the pressure sensor to realize the intelligent switching of the oil cooler.

[0009] Furthermore, the remote control platform is an intelligent terminal with a display screen, which is used to display in real time the data collected by the temperature sensor and the pressure sensor, as well as the switch status of each solenoid valve; the remote control platform is also provided with a manual control button, through which the user can directly send instructions to the PLC controller to control the corresponding solenoid valve to open or close.

[0010] Furthermore, the PLC controller has a built-in fault diagnosis program. When the data collected by the temperature sensor or pressure sensor exceeds the preset normal range, the fault diagnosis program automatically starts, analyzes the cause of the fault, and sounds an alarm through the sound and light alarm device, and sends the fault information to the remote control platform.

[0011] Furthermore, the pipe one, pipe two, pipe three, pipe four, pipe five, pipe six, pipe seven, pipe eight, pipe nine and pipe ten are all made of seamless steel pipes, and the inner walls of the pipes are coated with an anti-corrosion coating to prevent the pipes from rusting and corroding.

[0012] Furthermore, the valve body adopts an electric ball valve; and each valve body is provided with a position sensor, which is connected to the PLC controller through a signal line for real-time feedback of the switch state of the valve body.

[0013] Furthermore, flow regulating valves are provided on the water inlet main pipe, oil return main pipe, oil inlet main pipe and water return main pipe. The flow regulating valves are connected to the PLC controller via signal lines. The PLC controller automatically adjusts the opening of the flow regulating valves according to the data collected by the temperature sensor and the pressure sensor to control the flow of oil and water.

[0014] Furthermore, the oil cooler 1 and the oil cooler 2 are both plate-type oil coolers, which have the characteristics of high heat exchange efficiency and compact structure; and filters are provided at the oil inlet and water inlet of the oil cooler 1 and the oil cooler 2 to filter impurities in the oil and water.

[0015] Furthermore, the shells of the oil cooler 1 and the oil cooler 2 are made of stainless steel, which has good corrosion resistance and strength; an inspection door is provided on the shell to facilitate inspection and maintenance of the interior of the oil cooler.

[0016] The present invention has the following beneficial effects: 1. The device has greater adjustment space to ensure the lubricating oil temperature is within the required range under different water temperature and oil temperature conditions.

[0017] 2. The device can fully utilize old equipment and different equipment conditions to meet process requirements; Reduced labor costs: The device controls the valve body switch status by program, and does not require manual on-site operation, greatly reducing labor costs.

[0018] 3. The device has a simple structural design and reduced installation difficulty; low maintenance cost: the material is stainless steel, which has high strength and corrosion resistance, long service life and low maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structural principle of the present invention; In the figure: 1. Oil cooler one; 2. Oil cooler two; 3. Water inlet main pipe; 4. Pipe one; 5. Pipe two; 6. Pipe three; 7. Water return main pipe; 8. Pipe four; 9. Pipe five; 10. Oil inlet main pipe; 11. Pipe six; 12. Pipe seven; 13. Pipe eight; 14. Oil return main pipe; 15. Pipe nine; 16. Pipe ten; 17. PLC controller; 18. Remote control platform; 19. Valve body; 20. Water inlet; 21. Oil inlet; 22. Water return; 23. Oil return. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0022] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0023] Please refer to Figure 1 , an oil cooler switching system, comprising: Two oil coolers, oil cooler 1 and oil cooler 2, the oil cooler 1 and oil cooler 2 are arranged side by side, the oil cooler 1 and oil cooler 2 are both provided with an oil inlet 21, an oil return port 23, a water inlet 20, and a water return port 22; a water circulation pipeline and an oil circulation pipeline are provided between the oil cooler 1 and the oil cooler 2; The water circulation pipeline includes: a water inlet main pipe 3, to which a pipe 1 4 and a pipe 2 5 are connected, the pipe 1 4 is connected to the water inlet 20 of the oil cooler 1, and a valve body 19 is provided on the pipe 1 4; a pipe 3 6 is connected to the water return port 22 of the oil cooler 1, and the other end of the pipe 3 6 is connected to the water return main pipe 7; the pipe 2 5 is connected to the water inlet 20 of the oil cooler 2 2; and a valve body 19 is provided on the pipe 2 5, a pipe 4 8 is provided between the pipe 2 5 and the pipe 3 6, one end of the pipe 4 8 is connected to the pipe 3 6, and the other end is connected to the pipe 2 5, and a valve body 19 is provided on the pipe 4 8; a pipe 5 9 is connected to the water return port 22 of the oil cooler 2 2, and the other end of the pipe 5 9 is connected to the water return main pipe 7, and a valve body 19 is provided on the pipe 5 9; The oil circulation pipeline includes: an oil inlet main pipe 10, to which a pipe six 11 and a pipe seven 12 are connected, the pipe six 11 is connected to the oil inlet port 21 of the oil cooler one 1, and a valve body 19 is provided on the pipe six 11; the oil return port 23 of the oil cooler one 1 is connected to a pipe eight 13, the other end of the pipe eight 13 is connected to the oil return main pipe 14, the pipe seven 12 is connected to the oil inlet port 21 of the oil cooler two 2; and a valve body 19 is provided on the pipe seven 12, a pipe nine 15 is provided between the pipe seven 12 and the pipe eight 13, one end of the pipe nine 15 is connected to the pipe seven 12, and the other end is connected to the pipe eight 13, and a valve body 19 is provided on the pipe nine 15; the oil return port 23 of the oil cooler two 2 is connected to a pipe ten 16, the other end of the pipe ten 16 is connected to the oil return main pipe 14, and a valve body 19 is provided on the pipe ten 16.

[0024] In this embodiment, the valve body 19 is a solenoid valve, which is connected to the PLC controller 17 via a signal line. One end of the PLC controller 17 is connected to a remote control platform 18, which is used to control the corresponding solenoid valve to open or close through the PLC controller 17.

[0025] In this embodiment, the PLC controller is also connected to a temperature sensor and a pressure sensor. The temperature sensors are respectively arranged on the oil inlet main pipe 10, the oil return main pipe 14, the water inlet main pipe 3 and the water return main pipe 7, and are used to monitor the temperature of the oil and water in real time; the pressure sensors are respectively arranged on the oil inlet main pipe 10, the oil return main pipe 14, the water inlet main pipe 3 and the water return main pipe 7, and are used to monitor the pressure of the oil and water in real time; the PLC controller automatically controls the corresponding solenoid valve to open or close according to the data fed back by the temperature sensor and the pressure sensor, so as to realize the intelligent switching of the oil cooler.

[0026] In this embodiment, the remote control platform 18 is an intelligent terminal with a display screen, which is used to display the data collected by the temperature sensor and the pressure sensor, as well as the switch status of each solenoid valve in real time; the remote control platform 18 is also provided with a manual control button, through which the user can directly send instructions to the PLC controller to control the corresponding solenoid valve to open or close.

[0027] In this embodiment, the PLC controller has a built-in fault diagnosis program. When the data collected by the temperature sensor or the pressure sensor exceeds the preset normal range, the fault diagnosis program automatically starts, analyzes the cause of the fault, and sounds an alarm through the sound and light alarm device, and sends the fault information to the remote control platform 18.

[0028] In this embodiment, the pipe 1 4, pipe 2 5, pipe 3 6, pipe 4 8, pipe 5 9, pipe 6 11, pipe 7 12, pipe 8 13, pipe 9 15 and pipe 10 16 are all made of seamless steel pipes, and the inner walls of the pipes are coated with an anti-corrosion coating to prevent the pipes from rusting and corroding.

[0029] In this embodiment, the valve body 19 is an electric ball valve; and each valve body 19 is provided with a position sensor, which is connected to the PLC controller via a signal line for real-time feedback of the switch state of the valve body 19 .

[0030] In this embodiment, the water inlet pipe 3, the oil return pipe 14, the oil inlet pipe 10 and the water return pipe 7 are all provided with flow regulating valves, and the flow regulating valves are connected to the PLC controller through signal lines. The PLC controller automatically adjusts the opening of the flow regulating valve according to the data collected by the temperature sensor and the pressure sensor to control the flow of oil and water.

[0031] In this embodiment, the oil cooler 1 and the oil cooler 2 are both plate-type oil coolers, which have the characteristics of high heat exchange efficiency and compact structure; and filters are provided at the oil inlet 21 and the water inlet 20 of the oil cooler 1 and the oil cooler 2 for filtering impurities in the oil and water.

[0032] In this embodiment, the shells of the oil cooler 1 and the oil cooler 2 are made of stainless steel, which has good corrosion resistance and strength; an inspection door is provided on the shell to facilitate inspection and maintenance of the interior of the oil cooler.

[0033] The present invention has the following beneficial effects: 1. The device has greater adjustment space to ensure the lubricating oil temperature is within the required range under different water temperature and oil temperature conditions.

[0034] 2. The device can fully utilize old equipment and different equipment conditions to meet process requirements; Reduced labor costs: The device controls the switch state of the valve body 19 by a program, and does not require manual on-site operation, which greatly reduces the investment in labor costs.

[0035] 3. The device has a simple structural design and reduced installation difficulty; low maintenance cost: the material is stainless steel, which has high strength and corrosion resistance, long service life and low maintenance cost.

Claims

1. An oil cooler switching system, characterized in that: include: Two oil coolers, oil cooler 1 and oil cooler 2, the oil cooler 1 and oil cooler 2 are arranged side by side, the oil cooler 1 and oil cooler 2 are both provided with an oil inlet, an oil return port, a water inlet, and a water return port; a water circulation pipeline and an oil circulation pipeline are provided between the oil cooler 1 and the oil cooler 2; The water circulation pipeline includes: a water inlet main pipe, the water inlet main pipe is connected to a pipe 1 and a pipe 2, the pipe 1 is connected to the water inlet of the oil cooler 1, and a valve body is provided on the pipe 1; the return port of the oil cooler 1 is connected to a pipe 3, and the other end of the pipe 3 is connected to the return water main pipe; the pipe 2 is connected to the water inlet of the oil cooler 2; and a valve body is provided on the pipe 2, a pipe 4 is provided between the pipes 2 and 3, one end of the pipe 4 is connected to the pipe 3, and the other end is connected to the pipe 2, and a valve body is provided on the pipe 4; the return port of the oil cooler 2 is connected to a pipe 5, the other end of the pipe 5 is connected to the return water main pipe, and a valve body is provided on the pipe 5; The oil circulation pipeline includes: an oil inlet main pipe, to which pipe six and pipe seven are connected, the pipe six is ​​connected to the oil inlet of the oil cooler one, and a valve body is provided on the pipe six; the oil return port of the oil cooler one is connected to pipe eight, the other end of the pipe eight is connected to the oil return main pipe, the pipe seven is connected to the oil inlet of the oil cooler two; and a valve body is provided on the pipe seven, a pipe nine is provided between the pipes seven and eight, one end of the pipe nine is connected to the pipe seven, and the other end is connected to the pipe eight, and a valve body is provided on the pipe nine; the oil return port of the oil cooler two is connected to pipe ten, the other end of the pipe ten is connected to the oil return main pipe, and a valve body is provided on the pipe ten.

2. The oil cooler switching system according to claim 1, characterized in that: The valve body is a solenoid valve, which is connected to a PLC controller via a signal line. One end of the PLC controller is connected to a remote control platform, which is used to control the corresponding solenoid valve to open or close via the PLC controller.

3. The oil cooler switching system according to claim 2, characterized in that: The PLC controller is also connected to a temperature sensor and a pressure sensor. The temperature sensors are respectively arranged on the oil inlet main pipe, the oil return main pipe, the water inlet main pipe and the water return main pipe, and are used to monitor the temperature of the oil and water in real time; the pressure sensors are respectively arranged on the oil inlet main pipe, the oil return main pipe, the water inlet main pipe and the water return main pipe, and are used to monitor the pressure of the oil and water in real time; the PLC controller automatically controls the corresponding solenoid valve to open or close according to the data fed back by the temperature sensor and the pressure sensor, so as to realize the intelligent switching of the oil cooler.

4. The oil cooler switching system according to claim 2, characterized in that: The remote control platform is an intelligent terminal with a display screen, which is used to display the data collected by the temperature sensor and the pressure sensor, as well as the switch status of each solenoid valve in real time; the remote control platform is also provided with a manual control button, through which the user can directly send instructions to the PLC controller to control the corresponding solenoid valve to open or close.

5. The oil cooler switching system according to claim 2, characterized in that: The PLC controller has a built-in fault diagnosis program. When the data collected by the temperature sensor or the pressure sensor exceeds the preset normal range, the fault diagnosis program automatically starts, analyzes the cause of the fault, and sounds an alarm through the sound and light alarm device, and sends the fault information to the remote control platform.

6. The oil cooler switching system according to claim 1, characterized in that: The pipe one, pipe two, pipe three, pipe four, pipe five, pipe six, pipe seven, pipe eight, pipe nine and pipe ten are all made of seamless steel pipes, and the inner walls of the pipes are coated with anti-corrosion coating to prevent the pipes from rusting and corroding.

7. The oil cooler switching system according to claim 1, characterized in that: The valve body adopts an electric ball valve; and each valve body is provided with a position sensor, which is connected to the PLC controller through a signal line for real-time feedback of the switch state of the valve body.

8. The oil cooler switching system according to claim 1, characterized in that: The water inlet main pipe, oil return main pipe, oil inlet main pipe and water return main pipe are all provided with flow regulating valves, which are connected to the PLC controller through signal lines. The PLC controller automatically adjusts the opening of the flow regulating valve according to the data collected by the temperature sensor and the pressure sensor to control the flow of oil and water.

9. The oil cooler switching system according to claim 1, characterized in that: The oil cooler 1 and the oil cooler 2 are both plate-type oil coolers, which have the characteristics of high heat exchange efficiency and compact structure; and filters are provided at the oil inlet and water inlet of the oil cooler 1 and the oil cooler 2 to filter impurities in the oil and water.

10. The oil cooler switching system according to claim 1, characterized in that: The shells of the oil cooler 1 and the oil cooler 2 are made of stainless steel, which has good corrosion resistance and strength; an inspection door is provided on the shell to facilitate inspection and maintenance of the inside of the oil cooler.

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