A cold oiler switching system

Abstract

The application discloses a cold oiler switching system, comprising two oil coolers, an oil cooler one and an oil cooler two, wherein the oil cooler one and the oil cooler two are arranged side by side, and the oil cooler one and the oil cooler two are each 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 arranged between the oil cooler one and the oil cooler two; the application has the advantages of simple structure and convenient use, can have a larger adjustment space to ensure that the lubricating oil temperature is within the required range under different water temperatures and different oil temperatures, greatly improves the working efficiency and saves the labor cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of oil cooler switching systems, and specifically relates to an oil cooler switching system. BACKGROUND

[0002] In a power system, the safe and stable operation of a steam turbine has strict requirements for the temperature of lubricating oil, which is usually controlled at 35-45 DEG C. However, the fluctuation of ambient temperature can significantly affect the temperature of lubricating oil.

[0003] The traditional oil cooler is mainly based on the working principle of a surface heat exchanger, and different temperature mediums flow in and out of the copper pipe to achieve heat conduction to cool the lubricating oil. However, in summer, the ambient temperature is high, and a single oil cooler is often difficult to meet the operation requirements of the steam turbine, resulting in high oil temperature and affecting the normal operation of the equipment.

[0004] In winter, the ambient temperature and the cooling water temperature are both low, and improper operation may cause energy waste and cost increase. In addition, the previous equipment often requires more manual operation to control the oil temperature, which increases the labor intensity of personnel, and the complex design of the device also brings problems and high cost in installation and later maintenance. In order to solve the above problems, the present application provides an oil cooler switching system. SUMMARY

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

[0006] The specific scheme of the present application is as follows: an oil cooler switching system, comprising:

[0007] Two oil coolers, oil cooler one and oil cooler two, which are arranged side by side, and each of the oil cooler one and the oil cooler two is provided with an oil inlet, an oil return, a water inlet and a water return; a water circulation pipeline and an oil circulation pipeline are arranged between the oil cooler one and the oil cooler two;

[0008] The water circulation pipeline comprises a water inlet main pipe, a pipe one and a pipe two are connected to the water inlet main pipe, the pipe one is connected to the water inlet of the oil cooler one, and a valve body is arranged on the pipe one; a pipe three is connected to the water return of the oil cooler one, and the other end of the pipe three is connected to a water return main pipe; the pipe two is connected to the water inlet of the oil cooler two; a valve body is arranged on the pipe two, a pipe four is arranged between the pipe two and the pipe three, one end of the pipe four is communicated with the pipe three, and the other end of the pipe four is communicated with the pipe two, and a valve body is arranged on the pipe four; a pipe five is connected to the water return of the oil cooler two, the other end of the pipe five is communicated with the water return main pipe, and a valve body is arranged on the pipe five;

[0009] The oil circulation pipeline comprises: an oil inlet main pipe, a pipe six and a pipe seven are connected to the oil inlet main pipe, the pipe six is connected with an oil inlet of an oil cooler one, and a valve body is arranged on the pipe six; an oil return pipe is connected to an oil return port of the oil cooler one, the other end of the oil return pipe is connected with an oil return main pipe, the pipe seven is connected with an oil inlet of an oil cooler two; and a valve body is arranged on the pipe seven, a pipe nine is arranged between the pipe seven and the pipe eight, one end of the pipe nine is communicated with the pipe seven, the other end of the pipe nine is communicated with the pipe eight, and a valve body is arranged on the pipe nine; a pipe ten is connected to an oil return port of the oil cooler two, the other end of the pipe ten is communicated with the oil return main pipe, and a valve body is arranged on the pipe ten.

[0010] Further, the valve body is an electromagnetic valve, the electromagnetic valve is connected with a PLC controller through a signal line, one end of the PLC controller is connected with a remote control platform, and the remote control platform is used for controlling the corresponding electromagnetic valve to open or close through the PLC controller.

[0011] Further, the PLC controller is further connected with a temperature sensor and a pressure sensor, the temperature sensor is arranged on the oil inlet main pipe, the oil return main pipe, the water inlet main pipe and the water return main pipe respectively, and is used for monitoring the temperature of the oil and the water in real time; the pressure sensor is arranged on the oil inlet main pipe, the oil return main pipe, the water inlet main pipe and the water return main pipe respectively, and is used for monitoring the pressure of the oil and the water in real time; the PLC controller automatically controls the corresponding electromagnetic valve to open or close according to the data fed back by the temperature sensor and the pressure sensor, so as to realize intelligent switching of the oil cooler.

[0012] Further, the remote control platform is an intelligent terminal with a display screen, the display screen is used for displaying the data collected by the temperature sensor and the pressure sensor in real time, and the opening and closing states of each electromagnetic valve; the remote control platform is further provided with a manual control button, and a user can directly send an instruction to the PLC controller through the manual control button to control the corresponding electromagnetic valve to open or close.

[0013] Further, the PLC controller is built-in with a fault diagnosis program, when the data collected by the temperature sensor or the pressure sensor exceeds a preset normal range, the fault diagnosis program is automatically started, the fault reason is analyzed, an alarm is sent out through an audible and light alarm device, and the fault information is sent to the remote control platform.

[0014] Further, the pipe one, the pipe two, the pipe three, the pipe four, the pipe five, the pipe six, the pipe seven, the pipe eight, the pipe nine and the pipe ten all adopt seamless steel pipes, and the inner walls of the pipes are coated with anticorrosive coating to prevent the pipes from rusting and corroding.

[0015] Further, the valve body adopts an electric ball valve; and a position sensor is arranged on each valve body, the position sensor is connected with the PLC controller through a signal line, and is used for feeding back the opening and closing states of the valve body in real time.

[0016] Further, the water inlet main pipe, the oil return main pipe, the oil inlet main pipe and the water return main pipe are all provided with flow regulating valves, the flow regulating valves are connected with the PLC controller through signal lines, and the PLC controller automatically adjusts the opening degree of the flow regulating valves according to the data collected by the temperature sensor and the pressure sensor, so as to control the flow of oil and water.

[0017] Further, the oil cooler one and the oil cooler two are both plate type oil coolers, the plate type oil coolers have the characteristics of high heat exchange efficiency and compact structure; and the oil inlet and the water inlet of the oil cooler one and the oil cooler two are both provided with filters for filtering impurities in oil and water.

[0018] Further, the shell of the oil cooler one and the oil cooler two is made of stainless steel, has good corrosion resistance and strength; and the shell is provided with an inspection door, so that the inside of the oil cooler can be conveniently inspected and maintained.

[0019] The present application has the following beneficial effects:

[0020] 1. The device has greater adjustment space to ensure that the lubricating oil temperature is within the required range under different water temperatures and different oil temperatures.

[0021] 2. The device can fully utilize old equipment and different equipment conditions to meet the process requirements.

[0022] Labor cost is reduced: the device is controlled by a program to switch the valve body, without the need for manual on-site operation, greatly reducing the labor cost investment.

[0023] 3. The device has simple structure design, low installation difficulty, low maintenance cost, high strength and corrosion resistance, long service life and low maintenance cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 The figure is a structural principle schematic diagram of the present application;

[0025] 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 outlet; 23, oil outlet. DETAILED DESCRIPTION

[0026] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative work are within the scope of protection of the present application.

[0027] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0028] In addition, if the embodiments of the present application involve descriptions of “first”, “second”, etc., the descriptions of “first”, “second”, etc. are only for description purposes, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by “first” and “second” can explicitly or implicitly include at least one of the features. In addition, the meaning of “and / or” appearing throughout the text includes three parallel solutions. Taking “A and / or B” as an example, it includes A solution, or B solution, or A and B solutions. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of a person of ordinary skill in the art. When the combination of technical solutions contradicts each other or cannot be realized, it should be considered that the combination of technical solutions does not exist, and is not within the scope of protection claimed by the present application.

[0029] Please refer to Figure 1 A cold oiler switching system, comprising:

[0030] Two oil coolers, an oil cooler one 1 and an oil cooler two 2, the oil cooler one 1 and the oil cooler two 2 are arranged side by side, the oil cooler one 1 and the oil cooler two 2 are both provided with an oil inlet 21, an oil return port 23, a water inlet 20 and a water return port 22; the oil cooler one 1 and the oil cooler two 2 are provided with a water circulation pipeline and an oil circulation pipeline;

[0031] The water circulation pipeline comprises: a water inlet main pipe 3, a pipe one 4 and a pipe two 5 are connected to the water inlet main pipe 3, the pipe one 4 is connected to a water inlet 20 of an oil cooler one 1, and a valve body 19 is arranged on the pipe one 4; a pipe three 6 is connected to a water outlet 22 of the oil cooler one 1, and a water outlet main pipe 7 is connected to the other end of the pipe three 6; the pipe two 5 is connected to a water inlet 20 of an oil cooler two 2; and a valve body 19 is arranged on the pipe two 5, a pipe four 8 is arranged between the pipe two 5 and the pipe three 6, one end of the pipe four 8 is communicated with the pipe three 6, the other end of the pipe four 8 is communicated with the pipe two 5, and a valve body 19 is arranged on the pipe four 8; a pipe five 9 is connected to a water outlet 22 of the oil cooler two 2, the other end of the pipe five 9 is communicated with the water outlet main pipe 7, and a valve body 19 is arranged on the pipe five 9.

[0032] The oil circulation pipeline comprises: an oil inlet main pipe 10, a pipe six 11 and a pipe seven 12 are connected to the oil inlet main pipe 10, the pipe six 11 is connected to an oil inlet 21 of the oil cooler one 1, and a valve body 19 is arranged on the pipe six 11; a pipe eight 13 is connected to an oil outlet 23 of the oil cooler one 1, and an oil outlet main pipe 14 is connected to the other end of the pipe eight 13; the pipe seven 12 is connected to an oil inlet 21 of the oil cooler two 2; and a valve body 19 is arranged on the pipe seven 12, a pipe nine 15 is arranged between the pipe seven 12 and the pipe eight 13, one end of the pipe nine 15 is communicated with the pipe seven 12, the other end of the pipe nine 15 is communicated with the pipe eight 13, and a valve body 19 is arranged on the pipe nine 15; a pipe ten 16 is connected to an oil outlet 23 of the oil cooler two 2, the other end of the pipe ten 16 is communicated with the oil outlet main pipe 14, and a valve body 19 is arranged on the pipe ten 16.

[0033] In the embodiment, the valve body 19 is an electromagnetic valve, the electromagnetic valve is connected to a PLC controller 17 through a signal line, one end of the PLC controller 17 is connected to a remote control platform 18, and the remote control platform 18 is used for controlling the corresponding electromagnetic valve to open or close through the PLC controller 17.

[0034] In the embodiment, the PLC controller is also connected to a temperature sensor and a pressure sensor, the temperature sensor is arranged on the oil inlet main pipe 10, the oil outlet main pipe 14, the water inlet main pipe 3 and the water outlet main pipe 7 respectively, and is used for monitoring the temperature of the oil and the water in real time; the pressure sensor is arranged on the oil inlet main pipe 10, the oil outlet main pipe 14, the water inlet main pipe 3 and the water outlet main pipe 7 respectively, and is used for monitoring the pressure of the oil and the water in real time; the PLC controller automatically controls the corresponding electromagnetic 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.

[0035] In the embodiment, the remote control platform 18 is a smart terminal with a display screen, which is used for displaying the data collected by the temperature sensor and the pressure sensor in real time, and the opening and closing states of each electromagnetic valve; the remote control platform 18 is also provided with a manual control button, and the user can directly send instructions to the PLC controller through the manual control button to control the corresponding electromagnetic valve to open or close.

[0036] In the embodiment, the PLC controller is built-in with a fault diagnosis program, when the data collected by the temperature sensor or the pressure sensor exceeds the preset normal range, the fault diagnosis program is automatically started, the fault reason is analyzed, and an alarm is sent through the sound and light alarm device, and the fault information is sent to the remote control platform 18.

[0037] In the embodiment, the pipe one 4, the pipe two 5, the pipe three 6, the pipe four 8, the pipe five 9, the pipe six 11, the pipe seven 12, the pipe eight 13, the pipe nine 15 and the pipe ten 16 all adopt seamless steel pipes, and the inner walls of the pipes are coated with anticorrosive coating to prevent the pipes from rusting and corroding.

[0038] In the embodiment, the valve body 19 adopts an electric ball valve; and each valve body 19 is provided with a position sensor connected with the PLC controller through a signal line, which is used for feeding back the opening and closing state of the valve body 19 in real time.

[0039] In the embodiment, the water inlet main pipe 3, the oil return main pipe 14, the oil inlet main pipe 10 and the water return main pipe 7 are all provided with flow regulating valves connected with the PLC controller through signal lines, and the PLC controller automatically adjusts the opening degree 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.

[0040] In the embodiment, the oil cooler one 1 and the oil cooler two 2 are both plate type oil coolers, which have the characteristics of high heat exchange efficiency and compact structure; and the oil inlet 21 and the water inlet 20 of the oil cooler one 1 and the oil cooler two 2 are both provided with filters for filtering impurities in oil and water.

[0041] In the embodiment, the shells of the oil cooler one 1 and the oil cooler two 2 adopt stainless steel materials, which have good corrosion resistance and strength; and the shells are provided with maintenance doors for facilitating the maintenance and maintenance of the inside of the oil coolers.

[0042] The present application has the following beneficial effects:

[0043] 1. The device has greater adjustment space to ensure that the lubricating oil temperature is within the required range under different water temperatures and different oil temperatures.

[0044] 2、The device can fully utilize old equipment and make full use of different equipment conditions to meet process requirements; labor cost is reduced: the device is controlled by a program to switch the state of the valve body 19, without the need for manual on-site operation, greatly reducing the labor cost investment.

[0045] 3、The device has simple structure design, low installation difficulty; maintenance cost is low: the material is stainless steel, which has high strength and corrosion resistance, long service life and low maintenance cost.

Claims

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

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 temperature and pressure sensors. The temperature sensors are respectively installed on the oil inlet main pipe, oil return main pipe, water inlet main pipe, and water return main pipe to monitor the temperature of oil and water in real time. The pressure sensors are respectively installed on the oil inlet main pipe, oil return main pipe, water inlet main pipe, and water return main pipe to monitor the pressure of oil and water in real time. Based on the data fed back by the temperature and pressure sensors, the PLC controller automatically controls the corresponding solenoid valves to open or close, 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. The display screen is used to show the data collected by the temperature sensor and pressure sensor in real time, as well as the on / off status of each solenoid valve. The remote control platform is also equipped with a manual control button, which allows users to send commands directly to the PLC controller to control the corresponding solenoid valves 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 pressure sensor exceeds the preset normal range, the fault diagnosis program will automatically start, analyze the cause of the fault, issue an alarm through the audible and visual alarm device, and send the fault information to the remote control platform.

6. The oil cooler switching system according to claim 1, characterized in that: Pipes 1, 2, 3, 4, 5, 6, 7, 8, 9, and 10 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.

7. The oil cooler switching system according to claim 1, characterized in that: The valve body is an electric ball valve; and each valve body is equipped with a position sensor, which is connected to the PLC controller via a signal line to provide real-time feedback on the valve body's on / off status.

8. The oil cooler switching system according to claim 1, characterized in that: The main water inlet pipe, the main oil return pipe, the main oil inlet pipe, and the main water return pipe are all equipped with flow regulating valves. 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 based on the data collected by the temperature sensor and the pressure sensor to control the flow rate of oil and water.

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

10. The oil cooler switching system according to claim 1, characterized in that: The outer shells of oil coolers one and two are made of stainless steel, which has good corrosion resistance and strength; the outer shells are equipped with inspection doors to facilitate inspection and maintenance of the oil cooler interior.

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