Intelligent processing device for volume resistivity of fire-resistant oil

Abstract

The utility model belongs to the technical field of fire-resistant oil purification and regeneration, and relates to an intelligent fire-resistant oil volume resistivity processing device, which comprises a magnetic filter, an oil pump motor, a heater, a purification regenerator and an electronic flowmeter which are sequentially arranged along the flow direction of fire-resistant oil, and can monitor the change of the fire-resistant oil volume resistivity in real time. And the fire-resistant oil can be automatically purified and regenerated when the volume resistivity of the fire-resistant oil exceeds the standard.

Description

Technical Field

[0001] The utility model belongs to the technical field of fire-resistant oil purification and regeneration, and in particular relates to an intelligent processing device for the volume resistivity of fire-resistant oil. Background Art

[0002] Phosphate fire-resistant oil is mainly used in the turbine speed control system of the power system generator set. Its main function is to provide power oil and protective oil for the high and medium pressure valve oil motor, which is used to adjust and control the steam intake of the high and medium pressure cylinders of the turbine and operate the actuator of the main steam valve. With the rapid development of the power industry, there are more and more large-capacity and high-parameter steam turbine units, which puts forward higher requirements for the speed control system. This makes the fire-resistant oil operate at high temperature for a long time, and it is easy to have the problem of acid value, volume resistivity, moisture and other indicators deteriorating during operation. In order to ensure the safe operation of the speed control system, the power industry standard DL\T 571 "Guidelines for the Operation and Maintenance Management of Phosphate Fire-resistant Oil" has strict requirements on various indicators of the operating oil.

[0003] Volume resistivity is the impedance of a material to electric current per unit volume, and is used to characterize the electrical properties of a material. Volume resistivity analysis of fire-resistant fuel is a recognized effective means to ensure the safe operation of a steam turbine speed control system. At present, in order to ensure that the volume resistivity index of phosphate fire-resistant fuel meets the requirements, power plants generally adopt regular testing methods to take samples and analyze them every month or every three months. When the volume resistivity index test results are unqualified, an oil filter is used for purification and regeneration to ensure the stability of the oil quality. This method requires manual sampling and testing, and the entire process is cumbersome, inefficient, and time-consuming. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the above-mentioned prior art and provide an intelligent processing device for the volume resistivity of fire-resistant fuel oil, so as to overcome the problem that the existing technology for purification and regeneration of the volume resistivity of fire-resistant fuel oil has poor timeliness and cannot take immediate action.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] An intelligent processing device for volume resistivity of fire-resistant oil comprises a main pipe, one end of the main pipe is connected to the outlet of the fire-resistant oil tank, and the other end is connected to the inlet of the fire-resistant oil tank;

[0007] The main pipe leads to two parallel branches, namely a measurement branch and a purification branch;

[0008] The measuring branch is provided with a monitoring oil pump and a fire-resistant oil volume resistivity sensor;

[0009] Along the direction of the fire-resistant oil flow, the purification branch is provided with an oil inlet valve, a magnetic filter and a purification regenerator in sequence;

[0010] The monitoring oil pump, the fire-resistant oil volume resistivity sensor, the oil inlet valve, the magnetic filter and the purification regenerator are connected to a controller for communication.

[0011] The further improvement of the utility model is:

[0012] Preferably, the magnetic filter is composed of neodymium iron boron magnetic bars.

[0013] Preferably, the purification regenerator comprises a regeneration filter element and a fine filter which are connected to each other.

[0014] Preferably, the regeneration filter element is filled with an adsorbent.

[0015] Preferably, the regeneration filter element is placed before the fine filter.

[0016] Preferably, the regeneration filter element and the fine filter are connected to respective exhaust valves.

[0017] Preferably, an oil pump motor is provided between the magnetic filter and the purification regenerator, and the oil pump motor is communicatively connected to a controller.

[0018] Preferably, a heater is provided between the oil pump motor and the purification regenerator, and the heater is communicatively connected to the controller.

[0019] Preferably, an electronic flow meter is arranged after the purification regenerator, and the electronic flow meter is communicatively connected with the controller.

[0020] An oil outlet valve is arranged behind the electronic flow meter, and the oil outlet valve is communicatively connected with the controller.

[0021] Compared with the prior art, the utility model has the following beneficial effects:

[0022] The utility model provides an intelligent processing device for the volume resistivity of fire-resistant oil. A main pipeline is drawn out from the fire-resistant oil tank. The main pipeline is divided into a measuring branch and a purification branch. The measuring branch is provided with a fire-resistant oil volume resistivity sensor for monitoring the volume resistivity of fire-resistant oil. The fire-resistant oil flows into the fire-resistant oil volume resistivity sensor through the monitoring oil pump on the branch for constant measurement. The purification branch is provided with a filter and a purifier to purify impurities in the fire-resistant oil. The utility model overcomes many shortcomings of manual sampling and detection, and can monitor the changes in the volume resistivity of fire-resistant oil in real time, quickly and accurately and transmit the data to the computer terminal, so as to timely discover oil quality problems and solve oil quality problems in a timely manner: when the volume resistivity of the fire-resistant oil is monitored to be lower than the limit value specified in the standard, the oil purification and regeneration device is automatically turned on; when the volume resistivity of the fire-resistant oil is monitored to reach the ideal value, the oil purification and regeneration device is automatically emptied and turned off, so as to realize the intelligent processing of the volume resistivity of the fire-resistant oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of the structure of the intelligent processing device for the volume resistivity of fire-resistant oil provided by the utility model;

[0024] Among them: 1-anti-fuel volume resistivity sensor; 2-oil inlet valve; 3-magnetic filter; 4-oil pump motor; 5-heater; 6-purification regenerator; 7-exhaust valve; 8-electronic flow meter; 9-oil outlet valve; 10-monitoring oil pump; 11-main line; 111-measurement branch; 112-purification branch. DETAILED DESCRIPTION

[0025] The utility model is further described in detail below with reference to the accompanying drawings:

[0026] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Referring to the figure, the utility model provides an intelligent processing device for the volume resistivity of fire-resistant oil, which can determine in real time whether the fire-resistant oil needs to be purified according to the volume resistivity of the fire-resistant oil.

[0028] The device is provided with two parallel branches on the main pipe 11 for the flow of fire-resistant oil, namely a measuring branch 11 and a purification branch 112 .

[0029] A monitoring oil pump 10 and a fire-resistant oil volume resistivity sensor 1 are sequentially arranged on the measurement branch 11 along the flow direction of the fire-resistant oil.

[0030] A magnetic filter 3, an oil pump motor 4, a heater 5, a purification regenerator 6 and an electronic flow meter 8 are sequentially arranged on the purification branch 112 along the flow direction of the fire-resistant oil.

[0031] Among them, the monitoring oil pump 10, the anti-fuel volume resistivity sensor 1, the magnetic filter 3, the oil pump motor 4, the heater 5, the purification regenerator 6 and the electronic flow meter 8 are all connected to the control module; the controller can display the data measured by the anti-fuel volume resistivity sensor 1 and the flow data monitored by the electronic flow meter 8, and can also control the start and stop of the monitoring oil pump 10, the magnetic filter 3, the oil pump motor 4, the heater 5 and the purification regenerator 6.

[0032] The magnetic filter 3 is used to filter solid matter in the liquid, including mud, rust and impurities, and is an array structure composed of neodymium iron boron magnetic bars.

[0033] Among them, the purification regenerator 6 includes a connected regeneration filter element and a fine filter, the regeneration filter element is in front of the fine filter, the oil inlet of the regeneration filter element is connected to the oil outlet of the heater 5, the oil outlet of the regeneration filter element is connected to the oil inlet of the fine filter, and the oil outlet of the fine filter is connected to the electronic flowmeter 8.

[0034] The working principle of the regeneration filter element mainly depends on its adsorption performance, and the interior is filled with adsorbent. The regeneration filter element is made of materials with strong polar adsorbents, which can effectively adsorb and remove polar molecular compounds in the running oil, such as acidic and non-acidic compounds. This adsorption can reduce the acid value of the oil, increase the resistivity, remove color, remove sludge and gel, improve foam properties, etc. The specific regeneration filter element can be a diatomaceous earth regeneration filter element, an activated / modified alumina regeneration filter element, or a wet ion exchange resin regeneration filter element.

[0035] Fine filters are used to filter tiny particles, separate liquid or gas mixtures, and can also filter out fine impurities in fire-resistant oils, removing impurities and moisture.

[0036] As a preferred solution, the upper ends of the regeneration filter element and the fine filter are connected to an exhaust pipe, and an exhaust valve 7 is provided on the exhaust pipe. The oil contains a small amount of gas, which will accumulate in the filter after long-term operation and form a cavity at the top of the filter. After the air in the top cavity is discharged, the filter can operate efficiently.

[0037] The heater 5 has a temperature control function, so that the temperature of the oil before purification and filtration can meet the purification requirements.

[0038] As a preferred solution, a temperature sensor and a system pressure gauge are provided between the heater 5 and the purification regenerator 6 .

[0039] As a preferred solution, the intelligent processing device for the volume resistivity of fire-resistant fuel also includes an oil inlet valve 2 and an oil outlet valve 9. The oil inlet valve 2 is connected to the oil outlet valve 9 through a magnetic filter 3, an oil pump motor 4, a heater 5, a purification regenerator 6 and an electronic flowmeter 8.

[0040] The oil inlet valve 2, the exhaust valve 7 and the oil outlet valve 9 are all solenoid valves, and are connected to the controller at the same time, and can be started and stopped at the same time under the action of the controller.

[0041] When the utility model is in specific operation, the fire-resistant oil volume resistivity sensor 1, the monitoring oil pump 10 and the fire-resistant oil system bypass are connected through the oil pipe, and the start and stop of the oil pump motor 4 can be controlled by the controller, the oil inlet valve 2 is connected to the outlet of the fire-resistant oil tank through the main line 11, the magnetic filter 3 is connected to the oil inlet valve 2, the oil pump motor 4 is connected to the magnetic filter 3, the heater 5 is connected to the oil pump motor 4, the purification regenerator 6 is connected to the heater 5, the exhaust valve 7 is arranged on the top of the purification regenerator 6, the electronic flow meter 8 is connected to the purification regenerator 6, the oil outlet valve 9 is connected to the electronic flow meter 8, and the oil outlet of the oil outlet valve 9 is connected to the inlet of the fire-resistant oil tank through the main line 11. The fire-resistant oil volume resistivity sensor 1 is connected to the controller to realize real-time data transmission.

[0042] When working, the monitoring oil pump 10 starts, and the anti-fuel oil volume resistivity sensor 1 continuously monitors the data of the anti-fuel oil volume resistivity and saves the monitoring records. When the volume resistivity is monitored to be lower than the set limit value such as .×Ω·cm, the anti-fuel oil volume resistivity sensor 1 sends the oil pump motor 4 start instruction sheet to the device to start the purification process. At this time, the oil inlet valve 2, the oil pump motor 4, the heater 5, and the oil outlet valve 9 are opened in sequence, and the phosphate anti-fuel oil flows out from the oil outlet of the anti-fuel oil tank, passes through the oil inlet valve 2, the magnetic filter 3, the oil pump motor 4, the heater 5, the purification regenerator 6, the electronic flow meter 8, and the oil outlet valve 9 in sequence, and returns to the anti-fuel oil tank. When the volume resistivity is monitored to be greater than .×Ω·cm, the anti-fuel oil volume resistivity sensor 1 sends the device a stop purification process instruction. At this time, the device enters the emptying state, the oil inlet valve 2 is closed, the heater 5 is closed, and the exhaust valve 7 is opened. When the flow rate of the electronic flow meter 8 is, the device automatically turns off the oil pump motor 4, but the monitoring oil pump 10 continues to run, and the anti-fuel oil volume resistivity sensor 1 continues to monitor the oil volume resistivity.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An intelligent processing device for volume resistivity of fire-resistant fuel, It is characterized in that It comprises a main pipeline (11), one end of which is connected to the outlet of the fire-resistant oil tank, and the other end of which is connected to the inlet of the fire-resistant oil tank; The main pipe (11) has two parallel branches, namely a measurement branch (111) and a purification branch (112); The measuring branch (111) is provided with a monitoring oil pump (10) and a fire-resistant oil volume resistivity sensor (1); Along the direction of the fire-resistant oil flow, the purification branch (112) is provided with an oil inlet valve (2), a magnetic filter (3) and a purification regenerator (6) in sequence; The monitoring oil pump (10), the fire-resistant fuel volume resistivity sensor (1), the oil inlet valve (2), the magnetic filter (3) and the purification regenerator (6) are connected to a controller for communication.

2. According to claim 1, a fire-resistant fuel volume resistivity intelligent processing device, It is characterized in that The magnetic filter (3) is composed of neodymium iron boron magnetic bars.

3. According to claim 1, a fire-resistant fuel volume resistivity intelligent processing device, It is characterized in that The purification regenerator (6) comprises a regeneration filter element and a fine filter which are connected to each other.

4. According to claim 3, a fire-resistant fuel volume resistivity intelligent processing device, It is characterized in that The regeneration filter element is filled with an adsorbent.

5. The intelligent processing device for volume resistivity of fire-resistant fuel according to claim 3, It is characterized in that The regeneration filter element is located before the fine filter.

6. The intelligent processing device for volume resistivity of fire-resistant fuel according to claim 3, It is characterized in that The regeneration filter element and the fine filter are connected with respective exhaust valves (7).

7. The intelligent processing device for volume resistivity of fire-resistant fuel according to claim 1, It is characterized in that An oil pump motor (4) is provided between the magnetic filter (3) and the purification regenerator (6), and the oil pump motor (4) is communicatively connected to a controller.

8. The intelligent processing device for volume resistivity of fire-resistant fuel according to claim 7, It is characterized in that A heater (5) is provided between the oil pump motor (4) and the purification regenerator (6), and the heater (5) is communicatively connected to the controller.

9. The intelligent processing device for volume resistivity of fire-resistant fuel according to claim 1, It is characterized in that An electronic flow meter (8) is arranged behind the purification regenerator (6), and the electronic flow meter (8) is communicatively connected to the controller.

10. The intelligent processing device for volume resistivity of fire-resistant fuel according to claim 9, It is characterized in that An oil outlet valve (9) is arranged behind the electronic flow meter (8), and the oil outlet valve (9) is communicatively connected to the controller.

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