A fire-resistant oil regeneration system

Abstract

The utility model relates to the technical field of anti -burning oil regeneration, specifically is a kind of anti -burning oil regeneration system, including pipeline and dehydration device and regenerator that are sequentially communicated on pipeline, still include temperature control assembly between dehydration device and regenerator;The temperature control assembly includes self-limiting temperature electric heat tracing band that is wound on the outer wall of pipeline, pipeline radiator and pipeline thermometer that are communicated on pipeline, and pipeline thermometer is located at the pipeline inlet of regenerator.This system sets temperature control assembly on the inlet pipeline of regenerator, utilizes the cooperation temperature control of pipeline radiator and self-limiting temperature electric heat tracing band, ensure that anti -burning oil is in proper temperature zone when entering regenerator, avoid the regeneration effect of the fluctuation of oil temperature from good to bad, guarantee the stability of oil quality after regeneration and the reliability of long-term operation of system.

Description

Technical Field

[0001] This utility model relates to the technical field of fire-resistant oil regeneration, specifically a fire-resistant oil regeneration system. Background Technology

[0002] In modern power, chemical and other industrial sectors, steam turbine generator sets and other equipment widely use fire-resistant oil as the working medium for hydraulic control systems. Fire-resistant oil has advantages such as a high flash point, good lubrication performance and stable chemical properties, which can ensure the safe and reliable operation of equipment under complex conditions such as high temperature and high pressure.

[0003] However, with prolonged operation of equipment, fire-resistant oil inevitably ages and becomes contaminated. On one hand, during long-term use, the fire-resistant oil reacts with oxygen in the air, producing acidic substances and increasing its acid value. This not only corrodes the metal parts of the equipment but also affects the lubrication and electrical insulation properties of the fire-resistant oil. On the other hand, various impurities, such as metal particles, dust, and moisture, are introduced during system operation. These impurities further accelerate the deterioration of the fire-resistant oil, reducing its quality and making it more prone to exceeding standards in volume resistivity, foaming characteristics, and air release values. This necessitates replacement of the fire-resistant oil, but fire-resistant oil is expensive. Therefore, factories install fire-resistant oil regeneration systems to filter and regenerate the oil, extending its service life.

[0004] Existing fire-resistant oil regeneration systems, such as the prior art "A Fire-Resistant Oil Regeneration and Dehydration Device" (Announcement No.: CN207024820U), disclose a fire-resistant oil regeneration system comprising, in sequence, an inlet valve, an oil pump, an oil pump outlet valve, a dehydrator, a regenerator, a pressure gauge before fine filter, a pressure alarm, a fine filter, and a drain valve, as well as a dehydration bypass valve, a regeneration bypass valve, and a drain valve connected in parallel with the dehydrator and regenerator. In operation, the fire-resistant oil enters through the inlet, passes sequentially through the inlet valve, oil pump, oil pump outlet valve, dehydrator, regenerator, and fine filter, and is then discharged. However, the prior art still has the following technical problems: Temperature also affects the regeneration efficiency of fire-resistant oil. Regenerators utilize adsorption regeneration, which employs the surface physical properties or chemical activity of the adsorbent. Through intermolecular forces or chemical reactions, key impurities that cause oil quality degradation (such as organic acids, moisture, and polar degradation products) are captured and fixed inside or on the surface of the adsorbent, thereby improving the purity, reducing the acid value, and restoring the performance of the fire-resistant oil. However, if the temperature is too high, the fire-resistant oil will oxidize more rapidly, generating more acidic substances and reducing the regeneration effect. If the temperature is too low, molecular movement is slow, making it difficult for acidic substances to effectively contact the adsorbent. The regeneration process becomes very slow and inefficient, and may even fail to prevent the acid value from rising, reducing the quality of the regenerated oil. Under long-term system operation, temperature variations in the fire-resistant oil can lead to instability in the quality of the regenerated oil. Utility Model Content

[0005] This invention provides a fire-resistant oil regeneration system that can solve the problem that existing fire-resistant oil regeneration systems cannot adjust the temperature of the fire-resistant oil when it enters the regenerator, which leads to unstable quality of the regenerated fire-resistant oil due to temperature changes during long-term operation.

[0006] This application provides the following technical solution: a fire-resistant oil regeneration system, including a pipeline and a dehydrator and a regenerator connected in sequence on the pipeline, and also including a temperature control component located between the dehydrator and the regenerator; The temperature control assembly includes a self-regulating heating cable wrapped around the outer wall of the pipeline, a pipeline radiator connected to the pipeline, and a pipeline thermometer, with the pipeline thermometer located at the pipeline inlet of the regenerator.

[0007] Beneficial effects: Conveniently control the oil temperature within the pipeline to ensure stable quality of the regenerated fire-resistant oil. In existing systems, the temperature of the fire-resistant oil entering the regenerator cannot be adjusted. If high-temperature oil enters the regenerator directly, it will cause the desorption of organic acids adsorbed by the adsorbent, and may even accelerate the secondary oxidation of the fire-resistant oil, causing the acid value to rebound after regeneration. If low-temperature oil enters, the increased oil viscosity and reduced diffusion rate of impurity molecules will lead to a decrease in the adsorption capacity of the adsorbent for organic acids and polar degradation products, making it difficult to meet the standards for acid value and cleanliness of the regenerated oil. This system monitors the oil temperature before it enters the regenerator in real time using a pipeline thermometer. If the temperature is higher than the optimal regeneration range, the oil can be cooled by a pipeline radiator. If the temperature is close to or below the lower limit, the self-regulating heating cable wrapped around the outer wall of the pipeline can be activated to transfer heat to the oil inside the pipeline. Through the cooperation of the self-regulating heating cable and the pipeline radiator, the pipeline temperature can be controlled more easily, thereby achieving heating and cooling of the fire-resistant oil in the pipeline. This ensures that the fire-resistant oil entering the regenerator is always in the temperature range with the optimal adsorption efficiency, avoiding inconsistent regeneration results due to oil temperature fluctuations, and guaranteeing the stability of the regenerated oil quality and the long-term reliability of the system.

[0008] Furthermore, it also includes a regeneration oil pump, a regeneration solenoid valve, and a first pressure sensor connected in the pipeline. The regeneration oil pump is located near the dehydrator and between the first pressure sensor and the dehydrator. The temperature control component is located between the first pressure sensor and the pipeline thermometer. The regeneration solenoid valve is located at the pipeline outlet of the regenerator.

[0009] Beneficial effects: The regenerated oil pump, located near the dehydrator, provides stable power for the transfer of fire-resistant oil from the dehydrator to the regenerator, preventing delivery delays due to insufficient oil flow power. This ensures a continuous flow of oil through the temperature control component and the regenerator. Combined with the first pressure sensor located before the temperature control component, it can monitor the oil pressure in the pipeline in real time, promptly detecting pressure anomalies. This facilitates quick troubleshooting by maintenance personnel, preventing unstable pressure from affecting the oil flow rate, and thus avoiding temperature control deviations in the temperature control component and uneven adsorption in the regenerator caused by flow rate fluctuations. Furthermore, the regeneration solenoid valve located at the regenerator outlet allows for flexible control of the regenerated oil flow rate. Output on / off: When the pipeline thermometer detects that the oil temperature entering the regenerator is below standard or the first pressure sensor detects abnormal pipeline pressure, the regeneration solenoid valve can be closed to temporarily retain the substandard oil. The output can be reopened after the temperature control component adjusts the oil temperature and pressure to normal, thus preventing substandard oil from flowing back into the main system. At the same time, the coordinated control of the regeneration oil pump and the regeneration solenoid valve can adjust the rate of oil flow through the regenerator according to the regeneration requirements. Combined with the precise temperature control of the temperature control component, this ensures that the adsorption reaction in the regenerator is sufficient and stable, solving the problem of regenerated oil quality fluctuation in the existing system and improving the reliability of system operation.

[0010] Furthermore, it also includes an oil inlet valve, an oil suction filter, an oil pump, and a second pressure sensor connected in sequence on the pipeline, with the second pressure sensor located between the oil pump and the dehydrator. Beneficial effects: By installing a second pressure sensor between the oil pump outlet and the dehydrator, the pressure in the downstream pipeline can be monitored in real time and accurately, thereby effectively determining whether the oil suction filter is clogged, whether the oil pump is working properly, and whether the pipeline is unobstructed. This helps guide personnel to clean or replace the filter element in a timely manner, troubleshoot problems, avoid oil pump cavitation or insufficient regeneration flow due to blockage, ensure the continuous, stable and efficient operation of the regeneration system, and improve equipment safety and maintenance efficiency.

[0011] Furthermore, it also includes a replenishing valve located next to the inlet valve, which is connected in parallel with the inlet valve.

[0012] Beneficial effects: The parallel connection of the replenishing valve next to the inlet valve solves the problem that under the traditional single inlet valve control, the system can only supply oil through a fixed inlet channel, which is prone to oil supply interruption due to inlet valve failure, such as valve core jamming or seal failure. When the inlet valve needs maintenance or malfunctions, the replenishing valve can be quickly opened to replace the oil supply, ensuring the continuous delivery of fire-resistant oil to the dehydrator and regenerator, avoiding system shutdown affecting the regeneration process. It can also flexibly adjust the oil quantity according to the actual oil supply demand of the system to meet the system operation requirements without modifying the original inlet pipeline. At the same time, the parallel design of the replenishing valve also facilitates the maintenance of the inlet valve. The inlet valve can be closed for maintenance without draining the system oil, reducing maintenance interference with the normal operation of the system and ensuring the stability of the fire-resistant oil regeneration process.

[0013] Furthermore, it also includes a third pressure sensor, a primary fine filter, a secondary fine filter, and an oil outlet valve connected in sequence on the pipeline, wherein the third pressure sensor is located between the regeneration solenoid valve and the primary fine filter.

[0014] Beneficial effects: By installing a third pressure sensor between the regeneration solenoid valve and the first-stage fine filter, the outlet pressure of the regeneration circuit can be monitored in real time, and the blockage of components such as the regenerator can be accurately determined. This helps maintenance personnel to replace the adsorbent or filter element in a timely manner, avoids the reduction of regeneration flow or oil circuit obstruction caused by blockage, effectively prevents the reduction of regeneration efficiency, and ensures the quality of oil regeneration and the stable operation of the system.

[0015] Furthermore, one end of the dehydrator is provided with a first branch, which connects the dehydrator to the pipeline between the third pressure sensor and the regeneration solenoid valve.

[0016] Beneficial effects: By setting up a first branch to connect the dehydrator outlet with the pipeline between the third pressure sensor and the regeneration solenoid valve, a flexible multi-circulation purification path is formed. This allows the oil to directly enter the fine filtration stage after dehydration, bypassing the regenerator and achieving independent dehydration function. Alternatively, it can be operated in parallel with the regenerator to improve system processing efficiency. The first branch enhances the system's adaptability to different oil conditions, optimizes the process flow, avoids redundant equipment start-ups and shutdowns, and significantly improves the system's operational flexibility and energy efficiency.

[0017] Furthermore, a second branch is provided on the first branch, one end of which is connected to the first branch, and the other end of which is connected to the pipeline between the second pressure sensor and the oil pump. A bypass valve is connected to the second branch.

[0018] Beneficial effects: Adding a second branch with a bypass valve to the first branch allows for flexible adjustment of the oil flow and pressure in the pipeline. It also facilitates system commissioning and emergency handling. In the initial stage of system startup or when the pressure is abnormal, the bypass valve can be used to adjust the oil flow direction, assist in troubleshooting pipeline blockages or alleviate pressure fluctuations, ensure the continuity of system operation, the controllability of pressure and flow, and the convenience of fault handling, and improve the stability and fault tolerance of the fire-resistant oil regeneration system. Attached Figure Description

[0019] Figure 1 This is the main structural view of the present invention. Detailed Implementation

[0020] The following detailed description illustrates the specific implementation method: The markings in the accompanying drawings include: inlet valve 1, replenishment valve 2, suction filter 3, oil pump 4, second pressure sensor 5, dehydrator 6, regeneration oil pump 7, first pressure sensor 8, regenerator 9, regeneration solenoid valve 10, third pressure sensor 11, bypass valve 12, primary fine filter 13, secondary fine filter 14, outlet valve 15, pipeline radiator 16, pipeline thermometer 17, pipeline 18, self-regulating heating cable 19, first branch 20, and second branch 21.

[0021] Example 1 like Figure 1 As shown, a fire-resistant oil regeneration system includes a pipeline and, in sequence, an inlet valve, an oil suction filter, an oil delivery pump, a second pressure sensor, a dehydrator, a regeneration oil pump, a first pressure sensor, a temperature control component, a regenerator, a regeneration solenoid valve, a third pressure sensor, a primary fine filter, a secondary fine filter, and an outlet valve connected to the pipeline.

[0022] The temperature control component is located between the first pressure sensor and the regenerator; it includes a self-regulating heating cable wrapped around the outer wall of the pipeline, a pipeline radiator connected to the pipeline, and a pipeline thermometer located at the pipeline inlet of the regenerator. Due to the characteristics of the self-regulating heating cable, its conductive polymer material has a high positive temperature coefficient (PTC), allowing it to control the output power of the product according to changes in external environmental conditions, thus maintaining the pipeline temperature stably within the required range. That is, when the pipeline temperature is too low, the temperature will be increased to heat the pipeline; when the set temperature value is reached, the heating will stop. This is a commonly used product in industry and is existing technology; its principle will not be elaborated here. Through the cooperation of the self-regulating heating cable and the pipeline radiator, the pipeline temperature can be more easily controlled, thereby achieving the heating and cooling operations of the fire-resistant oil inside the pipeline.

[0023] A replenishing valve is installed next to the inlet valve, and is connected in parallel with the inlet valve via a bypass. This parallel connection allows the replenishing valve to be quickly opened to replace the inlet valve when it needs maintenance or malfunctions, ensuring a continuous supply of fire-resistant oil to the dehydrator and regenerator, preventing system downtime from affecting the regeneration process. It also allows for flexible adjustment of the oil quantity according to the actual system demand, meeting operational requirements. Furthermore, the parallel design of the replenishing valve facilitates maintenance of the inlet valve; it allows for independent closure of the inlet valve for maintenance without draining the system oil, reducing maintenance interference with normal system operation and ensuring the stability of the fire-resistant oil regeneration process.

[0024] A first branch is provided at one end of the dehydrator, which connects the dehydrator to the pipeline between the third pressure sensor and the regeneration solenoid valve. This allows the pipeline to have a flexible multi-circulation purification path, enabling the oil to directly enter the fine filtration stage after dehydration, bypassing the regenerator and achieving independent dehydration function. Alternatively, it can be operated in parallel with the regenerator to improve the system's processing efficiency. The first branch enhances the system's adaptability to different oil conditions and optimizes the process flow.

[0025] A second branch is connected to the first branch, with one end connected to the first branch and the other end connected to the pipeline between the second pressure sensor and the oil pump. A bypass valve is connected to the second branch. The bypass valve allows for flexible adjustment of the oil flow and pressure within the pipeline. Furthermore, during system startup or in case of abnormal pressure, the bypass valve can adjust the oil flow direction to assist in troubleshooting pipeline blockages or mitigating pressure fluctuations. This ensures continuous system operation, controllable pressure and flow, and ease of troubleshooting, thereby enhancing the stability and fault tolerance of the fire-resistant oil regeneration system.

[0026] It should be mentioned that the temperature control component and regeneration solenoid valve in the system are electrically connected to the system's built-in controller. The connection method is well known to those skilled in the art and will not be described in detail here.

[0027] The working process of this system is as follows: When the fire-resistant oil regeneration system is working, the fire-resistant oil usually enters the pipeline through the inlet valve or the replenishment valve. First, the oil suction filter removes large particulate impurities, then the oil is pressurized by the oil delivery pump. The outlet pressure of the oil delivery pump is monitored by the second pressure sensor, and then the oil enters the dehydrator to remove water. The dehydrated oil is pressurized again by the regeneration oil pump. The outlet pressure of the regeneration oil pump is monitored by the first pressure sensor, and then it enters the temperature control component. The pipeline thermometer monitors the oil temperature in real time to ensure that it meets the requirements of the regenerator. If the oil temperature does not meet the standard, the self-regulating electric heating cable or the pipeline radiator heats up the oil to adjust the temperature range of the fire-resistant oil entering the regenerator. Then the oil enters the regenerator to adsorb acidic substances and oxidation products. Then it passes through the regeneration solenoid valve and the pressure of the pipeline outlet section is monitored by the third pressure sensor. Finally, it passes through the first-stage fine filter and the second-stage fine filter for deep filtration and is discharged from the outlet valve, completing the conventional regeneration process. When the inlet valve malfunctions or requires maintenance, the parallel replenishing valve can be opened to ensure oil supply. If only dehydration or efficiency improvement is needed, the regeneration solenoid valve can be closed, allowing the oil to pass through the dehydrator and directly enter the fine filtration stage via the first branch, bypassing the regenerator. Alternatively, the regeneration solenoid valve can be opened, allowing the oil to pass through both the dehydrator and the regenerator simultaneously, meeting the system's operational requirements. During system startup or when pressure is abnormal, the oil flow rate, pressure, and direction can be adjusted via the bypass valve on the second branch to assist in troubleshooting and ensure stable system operation.

[0028] The above are merely embodiments of this utility model, and the utility model is not limited to the field covered by this embodiment. Commonly known structures and characteristics in the solutions are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A fire-resistant oil regeneration system, characterized in that: It includes piping and a dehydrator and a regenerator connected in sequence on the piping, and also includes a temperature control component located between the dehydrator and the regenerator; The temperature control assembly includes a self-regulating heating cable wrapped around the outer wall of the pipeline, a pipeline radiator connected to the pipeline, and a pipeline thermometer, with the pipeline thermometer located at the pipeline inlet of the regenerator.

2. The fire-resistant oil regeneration system according to claim 1, characterized in that: It also includes a regeneration oil pump, a regeneration solenoid valve, and a first pressure sensor connected in the pipeline. The regeneration oil pump is located near the dehydrator and between the first pressure sensor and the dehydrator. The temperature control component is located between the first pressure sensor and the pipeline thermometer. The regeneration solenoid valve is located at the pipeline outlet of the regenerator.

3. The fire-resistant oil regeneration system according to claim 2, characterized in that: It also includes an oil inlet valve, an oil suction filter, an oil pump, and a second pressure sensor connected in sequence on the pipeline. The second pressure sensor is located between the oil pump and the dehydrator.

4. The fire-resistant oil regeneration system according to claim 3, characterized in that: It also includes a replenishing valve located next to the inlet valve, which is connected in parallel with the inlet valve.

5. The fire-resistant oil regeneration system according to claim 4, characterized in that: It also includes a third pressure sensor, a primary fine filter, a secondary fine filter, and an oil outlet valve connected in sequence on the pipeline. The third pressure sensor is located between the regeneration solenoid valve and the primary fine filter.

6. The fire-resistant oil regeneration system according to claim 5, characterized in that: One end of the dehydrator is provided with a first branch, which connects the dehydrator to the pipeline between the third pressure sensor and the regeneration solenoid valve.

7. A fire-resistant oil regeneration system according to claim 6, characterized in that: The first branch is provided with a second branch. One end of the second branch is connected to the first branch, and the other end of the second branch is connected to the pipeline between the second pressure sensor and the oil pump. A bypass valve is connected to the second branch.

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