Oil acid value detection sensor

Abstract

The utility model discloses an oil acid value detection sensor which comprises a shell, a transparent detection tube arranged in the shell and a detection device arranged on the detection tube, an inlet of the detection tube is connected with a filter box, a splitter plate and a filter screen are sequentially arranged in the filter box downwards in the vertical direction, the splitter plate is of a hemispherical structure, and the filter screen is connected with the shell. And a vibrator is arranged on the inner side of the base. When oil passes through the spreader plate, the spreader plate is used for spreading the oil to form thin-layer oil, and then the vibrator is used for driving the spreader plate to vibrate, so that bubbles are broken or separated from the oil; and then impurities in the oil are filtered and removed through a filter screen, so that scattering or interference of particle impurities and bubbles on a spectrum is reduced, and the detection precision of the sensor on the acid value of the oil is improved.

Description

Technical Field

[0001] This utility model belongs to the field of oil detection technology, and in particular relates to an oil acid value detection sensor. Background Technology

[0002] Oil acid value is an important indicator for measuring the content of acidic substances in oil. It is one of the key parameters for judging the degree of deterioration of oil performance and assessing the operating status of equipment. It is widely used in the testing and maintenance of various industrial oils such as lubricating oil, hydraulic oil, and insulating oil.

[0003] In the existing technology, the acid value of oil can be detected by infrared spectroscopy. However, after the oil has been used, there will be particulate impurities and bubbles inside. When the oil is detected by infrared spectroscopy, the particulate impurities and bubbles will scatter or interfere with the spectrum, affecting the detection results.

[0004] Therefore, how to reduce the interference of particulate impurities and bubbles on spectral detection is an urgent problem to be solved. Utility Model Content

[0005] The purpose of this invention is to overcome the defects in the existing technology and provide an oil acid value detection sensor to improve the accuracy of oil acid value detection.

[0006] To achieve the above objectives, the specific technical solution of the oil acid value detection sensor of this utility model is as follows:

[0007] An oil acid value detection sensor includes a housing, a transparent detection tube disposed inside the housing, and a detection device disposed on the detection tube. A filter box is connected to the inlet of the detection tube. A flow divider and a filter screen are arranged vertically downward inside the filter box. The flow divider has a hemispherical structure and a vibrator is disposed on its inner side. The oil in the box flows vertically through the flow divider and the filter screen.

[0008] Preferably, the filter box includes a cylindrical box body, the top of the box body is sealed with a top cover, the top cover is provided with a liquid inlet pipe, and the diverter plate is connected to the top cover through a shock absorber.

[0009] Preferably, the top cover is also provided with an air extraction pipe, and a check valve and a vacuum pump are installed on the air extraction pipe.

[0010] Preferably, a conical flow-gathering plate is provided directly below the flow-diverting plate. The outer periphery of the flow-gathering plate is fixedly connected to the inner wall of the housing. The flow-gathering plate has an opening at its center, which is positioned directly opposite the filter screen.

[0011] Preferably, multiple filter screens are arranged vertically, and the pore size of each filter screen gradually decreases as it descends vertically.

[0012] Preferably, the bottom of the housing is sealed with a bottom cover, and a partition cylinder coaxially arranged with the housing is fixedly connected to the bottom cover. The filter screen is detachably disposed inside the partition cylinder. The top of the partition cylinder abuts against the flow-gathering plate to form a seal, and the bottom of the partition cylinder has a liquid outlet.

[0013] Preferably, a liquid outlet pipe is provided on the side of the housing, the liquid outlet pipe is connected to the detection pipe, and the height of the liquid outlet pipe is less than the height of the flow-gathering plate and greater than the height of the liquid outlet.

[0014] Preferably, the flow divider is positioned directly opposite the port of the inlet pipe, and the top surface of the flow divider has a plurality of hemispherical protrusions evenly distributed thereon.

[0015] Preferably, the filter screen is provided with a sealing ring on its outer circumference, and the sealing ring is sealed to the inner circumferential surface of the separator cylinder.

[0016] Preferably, a valve is provided at the outlet of the detection tube.

[0017] The oil acid value detection sensor of this utility model has the following advantages: when the oil passes through the splitter plate, the splitter plate spreads the oil to form a thin layer of oil. Then, the splitter plate is driven to vibrate by the vibrator to cause the bubbles to break or detach from the oil. Afterwards, the impurities in the oil are filtered and removed by the filter screen, thereby reducing the scattering or interference of particulate impurities and bubbles on the spectrum and improving the detection accuracy of the oil acid value by the sensor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the sensor structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the sensor of this utility model;

[0020] Figure 3 This is an exploded view of the filter box of this utility model;

[0021] Figure 4 This is a cross-sectional view of the filter box of this utility model;

[0022] Figure 5 This is a schematic diagram of the top cover of this utility model;

[0023] Figure 6 This is a schematic diagram of the structure of the box body of this utility model;

[0024] Figure 7 This is a schematic diagram of the structure of the bottom cover of this utility model;

[0025] Figure 8This is a schematic diagram of the structure of the filter screen of this utility model;

[0026] The markings in the diagram are as follows: 1. Outer shell; 3. Filter box; 201. Valve; 202. Detection tube; 203. Detection device; 31. Top cover; 32. Box body; 33. Bottom cover; 34. Filter screen; 311. Liquid inlet pipe; 312. Vacuum pump; 313. Air extraction pipe; 314. Check valve; 315. Shock absorber; 316. Vibrator; 317. Diverter plate; 321. Liquid outlet pipe; 322. Flow concentrator plate; 331. Divider cylinder; 332. Liquid outlet. Detailed Implementation

[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings and examples. The following examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0028] The terms "top surface," "bottom surface," and "full surface" are used with reference to the normal operating state of the acid value detection sensor and are only for the convenience of describing this utility model and simplifying the description. They are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] like Figure 1-4 As shown, an oil acid value detection sensor includes a housing 1, a transparent detection tube 202 disposed inside the housing 1, and a detection device 203 disposed on the detection tube 202. A filter box 3 is connected to the inlet of the detection tube 202. A flow divider 317 and a filter screen 34 are arranged vertically downward inside the filter box 3. The flow divider 317 has a hemispherical structure and a vibrator 316 is disposed on its inner side. The oil in the box 32 flows vertically through the flow divider 317 and the filter screen 34.

[0030] The aforementioned sensor is suitable for detecting the acid value of oil, used to determine the degree of oil performance degradation and assess the operating status of equipment. During operation, the oil is first sent into the filter box 3 for filtration to remove impurities and air bubbles. After filtration, the oil flows through the detection tube 202, where the detection device 203 performs infrared spectroscopy detection to obtain the acid value. The detection device 203 is an infrared spectrometer, integrated inside the sensor housing 1, which can perform online acid value detection of the oil, improving detection efficiency. The hemispherical diverter plate 317 reduces oil accumulation on its surface and provides reliable protection for the vibrator 316, preventing oil from dripping onto it and reducing the failure rate of the vibrator 316.

[0031] Specifically, during the defoaming process, the oil is allowed to fall freely onto the top surface of the distributor plate 317. The oil then spreads along the surface of the distributor plate 317, forming a thin layer that lies flat on it. During this process, the distributor plate 317 vibrates using a vibrator 316. This vibration disrupts the stability of the bubbles, causing them to burst and rise to the surface of the oil, thus eliminating the bubbles. After defoaming, the oil flows down from the edges of the distributor plate 317 to the filter screen 34, where particulate impurities are filtered out. By defoaming and removing impurities, the purity of the oil is improved, the scattering or interference of particulate impurities and bubbles on the spectrum is reduced, and the accuracy of the sensor in detecting the acid value of the oil is enhanced.

[0032] Further improvements include, for example Figure 3 and 4 As shown, the filter box 3 includes a cylindrical box body 32, with a top cover 31 sealed to the top of the box body 32. An inlet pipe 311 is provided on the top cover 31, and a flow divider 317 is connected to the top cover 31 via a shock absorber 315. The outlet end of the inlet pipe 311 is connected to the top cover 31 and communicates with the interior of the filter box 3. The outlet end of the inlet pipe 311 is positioned directly opposite the center of the flow divider 317, allowing the outflowing oil to reach the center of the flow divider 317 and disperse outwards, thereby forming a thin layer of oil on the surface of the flow divider 317. The top cover 31 is connected to the box body 32 via threads, enabling the top cover 31 to be opened and closed for convenient maintenance of the internal components of the filter box 3.

[0033] Further improvements include, for example Figure 5 As shown, the top cover 31 is also equipped with an air extraction pipe 313, on which a check valve 314 and a vacuum pump 312 are installed. In this sensor, the vacuum pump 312 provides power to extract air from inside the filter box 3 through the air extraction pipe 313, thereby creating a negative pressure inside the filter box 3. The presence of negative pressure can promote the separation of air bubbles in the oil and improve the degassing effect on the oil.

[0034] Further improvements include, for example Figure 6 As shown, a conical concentrator 322 is disposed directly below the distributor 317. The outer periphery of the concentrator 322 is fixedly connected to the inner wall of the housing 32. The concentrator 322 has an opening at its center, which is positioned directly opposite the filter screen 34. The concentrator 322 is designed to gather the oil dispersed by the distributor 317 and guide it to the filter screen 34, allowing the oil to pass through the filter screen 34 for effective filtration. Furthermore, as the oil flows through the concentrator 322, a thin layer of oil is formed on the surface of the concentrator 322, thereby increasing the surface area of ​​the thin oil layer and improving the defoaming effect of the oil.

[0035] Further improvements include, for example Figure 3 and4 As shown, multiple filter screens 34 are arranged vertically, with the pore size of each filter screen 34 gradually decreasing downwards. The arrangement of multiple filter screens 34 allows for the sequential filtration of impurities of different particle sizes, improving the filtration effect. Furthermore, the accumulation of impurities of different particle sizes on different filter screens 34 slows down the clogging rate, thereby enhancing the filtration effect and efficiency of the filter for oil.

[0036] Further improvements include, for example Figure 6 and 7 As shown, the bottom of the housing 32 is sealed with a bottom cover 33, and a partition cylinder 331 coaxially arranged with the housing 32 is fixedly connected to the bottom cover 33. The filter screen 34 is detachably arranged inside the partition cylinder 331. The top of the partition cylinder 331 abuts against the flow-concentrating plate 322 to form a seal. The bottom of the partition cylinder 331 is provided with a liquid outlet 332. A liquid outlet pipe 321 is provided on the side of the housing 32. The liquid outlet pipe 321 is connected to the detection pipe 202. The height of the liquid outlet pipe 321 is less than the height of the flow-concentrating plate 322 and greater than the height of the liquid outlet 332. In this sensor, the bottom cover 33 and the top cover 31 are installed in the same way, thus enabling the bottom cover 33 to be disassembled and assembled. The partition cylinder 331 is firstly used to install the filter screen 34 to improve the stability of the filter screen 34 installation. Secondly, the oil collected by the flow-gathering plate 322 flows into the inner side of the partition cylinder 331, which can guide the oil flow so that the oil can fully contact the filter screen 34 and ensure the filtration effect. When the oil flows to the bottom of the partition cylinder 331, it overflows to the outside of the partition cylinder through the outlet 332 and is finally discharged through the outlet pipe 321. The oil turns inside and outside the partition cylinder 331, which can slow down the flow rate of the oil and facilitate the sedimentation of residual impurities in the oil to the bottom of the filter box 3, further improving the purification effect of the oil.

[0037] Further improvements include, for example Figure 4 As shown, the flow divider 317 is positioned directly opposite the port of the inlet pipe 311, and multiple hemispherical protrusions are evenly distributed on the top surface of the flow divider 317. The protrusions can intercept impurities in the oil, thus achieving a preliminary filtration effect; furthermore, during vibration, the protrusions can also impact air bubbles in the oil, promoting bubble breakage and enhancing the defoaming effect.

[0038] Further improvements include, for example Figure 8 As shown, a sealing ring is provided on the outer circumference of the filter screen 34, and the sealing ring is sealed to the inner circumferential surface of the separator cylinder 331. The sealing ring is a rubber ring. The sealing ring can first fill the gap between the filter screen 34 and the separator cylinder 331 to prevent oil leakage and ensure the filtration effect. Secondly, the friction between the sealing ring and the separator cylinder 331 can fix the filter screen 34 inside the separator cylinder 331, improving the stability of the filter screen 34 installation.

[0039] Further improvements include, for example Figure 2 As shown, a valve 201 is installed at the outlet of the detection tube 202. The valve 201 can adjust the flow rate at the outlet of the detection tube 202, thereby stabilizing the flow rate of the oil inside the detection tube 202, ensuring the consistency of oil transmission and the uniformity of molecular interaction, and improving the accuracy and sensitivity of the sensor detection results.

[0040] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An oil acid value detection sensor, comprising a housing (1), a transparent detection tube (202) disposed inside the housing (1), and a detection device (203) disposed on the detection tube (202), characterized in that: The inlet of the detection tube (202) is connected to a filter box (3). Inside the filter box (3), a flow divider (317) and a filter screen (34) are arranged vertically downwards. The flow divider (317) is a hemispherical structure and a vibrator (316) is arranged on its inner side. The oil in the box (32) flows vertically through the flow divider (317) and the filter screen (34).

2. The oil acid value detection sensor according to claim 1, characterized in that, The filter box (3) includes a cylindrical box body (32), the top of which is sealed with a top cover (31), and an inlet pipe (311) is provided on the top cover (31). The diverter plate (317) is connected to the top cover (31) through a shock absorber (315).

3. The oil acid value detection sensor according to claim 2, characterized in that, The top cover (31) is also provided with an air extraction pipe (313), and a check valve (314) and a vacuum pump (312) are installed on the air extraction pipe (313).

4. The oil acid value detection sensor according to claim 2, characterized in that, A conical flow-gathering plate (322) is provided directly below the flow-diverting plate (317). The outer periphery of the flow-gathering plate (322) is fixedly connected to the inner wall of the housing (32). The flow-gathering plate (322) has an opening at its center, which is positioned directly opposite the filter screen (34).

5. The oil acid value detection sensor according to claim 1, characterized in that, Multiple filters (34) are arranged vertically, and the aperture of each filter (34) gradually decreases vertically downwards.

6. The oil acid value detection sensor according to claim 4, characterized in that, The bottom of the housing (32) is sealed with a bottom cover (33), and a partition cylinder (331) coaxially arranged with the housing (32) is fixedly connected to the bottom cover (33). The filter screen (34) is detachably arranged inside the partition cylinder (331). The top of the partition cylinder (331) abuts against the flow-gathering plate (322) to form a seal. The bottom of the partition cylinder (331) is provided with a liquid outlet (332).

7. The oil acid value detection sensor according to claim 6, characterized in that, The side of the box (32) is provided with a liquid outlet pipe (321), which is connected to the detection pipe (202). The height of the liquid outlet pipe (321) is less than the height of the flow-gathering plate (322) and greater than the height of the liquid outlet (332).

8. The oil acid value detection sensor according to claim 1, characterized in that, The flow divider (317) is positioned directly opposite the port of the inlet pipe (311), and the top surface of the flow divider (317) is evenly distributed with a plurality of hemispherical protrusions.

9. The oil acid value detection sensor according to claim 6, characterized in that, The filter screen (34) is provided with a sealing ring on its outer circumference, and the sealing ring is sealed to the inner circumferential surface of the separator cylinder (331).

10. The oil acid value detection sensor according to claim 1, characterized in that, A valve (201) is provided at the outlet of the detection tube (202).

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