Probing type water content analyzer

Abstract

The utility model provides a probing type water content analyzer. The probing type water content analyzer comprises a gauge outfit and a sensor assembly connected with the gauge outfit, the sensor assembly comprises an electrode base, a sensing electrode and an electrode sleeve, one end of the electrode base is connected with the bottom of the meter head, the other end of the electrode base is connected with the sensing electrode, the sensing electrode is sleeved with the electrode sleeve, and the electrode base, the sensing electrode and the electrode sleeve are coaxially arranged; the sensing electrode is coated with an insulating coating, and the insulating coating is used for improving the sensitivity of signals. According to the utility model, the sensing electrode is coated with the insulating coating, and after the sensing electrode is subjected to insulating treatment, the change of a dielectric constant becomes stable, so that the sensitivity of measurement is improved; due to the stable dielectric constant, errors in measurement are reduced, so that the measurement precision of the water content analyzer is improved. In addition, the insulating coating on the sensing electrode can isolate direct contact of crude oil, so that the sensing electrode is prevented from being polluted and corroded, and the service life of the sensing electrode is prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of crude oil water content analysis equipment, specifically a probe-type water content analyzer. Background Technology

[0002] Crude oil is an important energy source, and its moisture content is a crucial indicator that significantly impacts the production and processing of the petroleum industry. Moisture in crude oil can cause a series of problems during transportation and storage. For example, moisture can combine with sulfides and acids in crude oil to form sulfuric acid and sulfates, accelerating the corrosion of pipelines and storage tanks. Furthermore, the presence of moisture in crude oil can affect separation efficiency and product quality during refining processes, reducing the efficiency and lifespan of refining equipment. Therefore, accurately measuring the moisture content of crude oil is of paramount importance for the production and processing of the petroleum industry.

[0003] Existing online instruments commonly used to detect the water content in crude oil are mostly water content analyzers, employing methods such as capacitance-conductivity methods, radio frequency methods, and electromagnetic wave methods. Their principle involves emitting electromagnetic waves of different frequencies into the crude oil medium through a sensor probe. The water content is measured by observing the varying energy absorbed by the medium based on the different water contents. However, these water content analyzers generally suffer from several common problems: the design and manufacturing process of the sensing electrodes lead to low measurement accuracy and are prone to measurement errors; the sealing structure of the sensor components is not ideal, making liquid leakage likely under high-pressure conditions, posing a safety hazard; and the sensor probe, being in prolonged contact with crude oil, is susceptible to corrosion, affecting its service life. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a probe-type water content analyzer that can improve measurement accuracy.

[0005] The technical solution of this utility model is to provide a probe-type water content analyzer with the following structure: including a meter head and a sensor assembly connected to the meter head; the sensor assembly includes an electrode base, a sensing electrode, and an electrode sleeve, one end of the electrode base is connected to the bottom of the meter head, and the other end is connected to the sensing electrode, the electrode sleeve is sleeved on the sensing electrode, and the electrode base, the sensing electrode, and the electrode sleeve are arranged coaxially; the sensing electrode is coated with an insulating coating to improve the sensitivity of the signal.

[0006] With the above structure, the probe-type water content analyzer of this invention has the following advantages compared with the prior art:

[0007] This invention involves coating the sensing electrode with an insulating coating. After insulation, the dielectric constant of the sensing electrode becomes stable, thereby improving measurement sensitivity. The stable dielectric constant reduces measurement errors, thus improving the measurement accuracy of the water content analyzer. Furthermore, the insulating coating on the sensing electrode also prevents direct contact with crude oil, avoiding contamination and corrosion, and extending its service life.

[0008] Preferably, the sensor assembly further includes an O-ring, a sealing insulating gasket, and a clamping nut sequentially fitted onto the sensing electrode. The clamping nut is threadedly connected to the electrode base to fix the sensing electrode onto the electrode base. The O-ring improves the sealing performance between the sensing electrode and the electrode base. The cooperation of the O-ring, sealing insulating gasket, and clamping nut enhances the sealing performance at the connection between the sensing electrode and the electrode base, preventing crude oil leakage.

[0009] Preferably, a retaining ring is connected to the clamping nut, and the retaining ring is engaged inside the electrode sleeve; when the retaining ring is opened, it will engage with the inner wall of the electrode sleeve, which can prevent the electrode sleeve from automatically falling off the sensing electrode.

[0010] Preferably, a support connecting pipe is provided between the meter head and the electrode base, and the two ends of the support connecting pipe are respectively connected to the meter head and the electrode base.

[0011] Preferably, the supporting connecting pipe is hollow and filled with insulating and heat-insulating components. The pressure and temperature inside crude oil pipelines are typically high. Installing a hollow supporting connecting pipe between the meter head and the crude oil pipeline, and filling the supporting connecting pipe with insulating and heat-insulating components, can reduce the heat transferred from the crude oil pipeline to the meter head, preventing the electrical components inside the meter head from being affected by high temperatures and reducing the incidence of failure.

[0012] Preferably, the end of the support connecting pipe near the electrode base is connected to a flange cover, which is used to connect to the interface of the oil pipe, thus facilitating the assembly of the probe-type water content analyzer.

[0013] Preferably, the meter head includes a housing, a main circuit control board, and a display screen. The main circuit control board is disposed inside the housing, and the display screen is disposed on the housing. The main circuit control board is connected to the display screen and the sensing electrodes respectively via wires.

[0014] Preferably, the outer peripheral wall of the electrode sleeve is provided with a number of through grooves evenly spaced along its circumference, for allowing crude oil to enter the electrode sleeve and come into contact with the sensing electrode. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a cross-sectional view of the present invention.

[0017] Figure 3 This is an exploded view of the present invention.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Meter head; 11. Housing; 12. Circuit main control board; 13. Display screen; 14. Wire; 2. Sensor assembly; 21. Electrode base; 22. Sensing electrode; 23. Electrode sleeve; 231. Through groove; 24. O-ring seal; 25. Sealing and insulating gasket; 26. Compression nut; 27. Snap ring; 3. Support connecting pipe; 31. Insulating and heat-insulating component; 32. Flange cover. Detailed Implementation

[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. At the same time, the terms "first", "second", etc. are only used to distinguish the names of each component and do not have a primary or secondary relationship. Therefore, they should not be construed as limitations on this utility model.

[0022] like Figure 1 , Figure 2 and Figure 3 As shown;

[0023] This utility model discloses a probe-type water content analyzer, which includes a meter head 1 and a sensor assembly 2 connected to the meter head 1.

[0024] The sensor assembly 2 includes an electrode base 21, a sensing electrode 22, and an electrode sleeve 23. One end of the electrode base 21 is connected to the bottom of the meter head 1, and the other end is connected to the sensing electrode 22. The electrode sleeve 23 is sleeved on the sensing electrode 22, and the electrode base 21, the sensing electrode 22, and the electrode sleeve 23 are arranged coaxially. The sensing electrode 22 is coated with an insulating coating to improve the sensitivity of the signal.

[0025] This invention coats the sensing electrode 22 with an insulating coating. After the sensing electrode 22 is insulated, the change in dielectric constant becomes stable. This is because the insulation treatment can reduce charge accumulation and dielectric loss on the electrode surface, thereby reducing fluctuations in the dielectric constant. In microwave measurement, even a small change in the dielectric constant can lead to a significant change in the microwave signal. Therefore, a stable dielectric constant means that the change in the microwave signal is more sensitive, thereby improving the measurement sensitivity. At the same time, a stable dielectric constant reduces measurement errors, thereby improving the measurement accuracy of the water content analyzer.

[0026] In addition, the insulating coating on the sensing electrode 22 can also isolate the sensing electrode 22 from direct contact with crude oil, prevent the sensing electrode 22 from being contaminated and corroded, and improve its service life.

[0027] The sensor assembly 2 also includes an O-ring 24, a sealing insulating gasket 25, and a clamping nut 26 sequentially fitted onto the sensing electrode 22. The clamping nut 26 is threadedly connected to the electrode base 21 to fix the sensing electrode 22 onto the electrode base 21. The O-ring 24 is used to improve the sealing between the sensing electrode 22 and the electrode base 21. Through the cooperation of the O-ring 24, the sealing insulating gasket 25, and the clamping nut 26, the sealing at the connection between the sensing electrode 22 and the electrode base 21 can be improved, preventing crude oil leakage.

[0028] A retaining ring 27 is connected to the clamping nut 26. The retaining ring 27 is engaged inside the electrode sleeve 23. When the retaining ring 27 is opened, it will engage with the inner wall of the electrode sleeve 23, which can prevent the electrode sleeve 23 from automatically falling off the sensing electrode 22.

[0029] The outer peripheral wall of the electrode sleeve 23 is provided with several through grooves 231 evenly spaced along its circumference, for crude oil to enter the electrode sleeve 23 and come into contact with the sensing electrode 22. The electrode sleeve 23 can protect the sensing electrode 22, and the through grooves 231 on the electrode sleeve 23 can ensure that the detection of the sensing electrode 22 is not affected.

[0030] A support connecting pipe 3 is also provided between the meter head 1 and the electrode base 21, with both ends of the support connecting pipe 3 connected to the meter head 1 and the electrode base 21 respectively.

[0031] The support connecting pipe 3 is hollow and filled with an insulating heat insulation component 31. The insulating heat insulation component 41 is made of a cylindrical insulating material (such as polyurethane foam) and has a through hole extending along its axis for the wire 14 connecting the sensing electrode 22 to pass through. The pressure and temperature inside the crude oil pipeline are usually high. By setting a hollow support connecting pipe 3 between the meter head 1 and the crude oil pipeline and filling the support connecting pipe 3 with the insulating heat insulation component 31, the heat transferred from the crude oil pipeline to the meter head 1 can be reduced, preventing the electrical components inside the meter head 1 from being affected by high temperature and reducing the failure rate.

[0032] A flange cover 32 is connected to one end of the support connecting pipe 3 near the electrode base 21. The flange cover 32 is used to connect to the interface of the oil pipe, which facilitates the assembly of the probe-type water content analyzer.

[0033] The meter head 1 includes a housing 11, a main circuit control board 12, and a display screen 13. The main circuit control board 12 is disposed inside the housing 11, and the display screen 13 is disposed on the housing 11. The main circuit control board 12 is connected to the display screen 13 and the sensing electrode 22 respectively via wires (signal lines) 14. Both the electrode base 21 and the insulating heat insulation component 31 have channels for the wires 14 to pass through, facilitating the connection between the main circuit control board 12 and the sensing electrode 22.

[0034] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A probe-type water content analyzer, characterized in that: The device includes a meter head (1) and a sensor assembly (2) connected to the meter head (1); the sensor assembly (2) includes an electrode base (21), a sensing electrode (22) and an electrode sleeve (23). One end of the electrode base (21) is connected to the bottom of the meter head (1) and the other end is connected to the sensing electrode (22). The electrode sleeve (23) is sleeved on the sensing electrode (22), and the electrode base (21), the sensing electrode (22) and the electrode sleeve (23) are arranged coaxially. The sensing electrode (22) is coated with an insulating coating to improve the sensitivity and stability of the signal.

2. The probe-type water content analyzer according to claim 1, characterized in that: The sensor assembly (2) further includes an O-ring (24), a sealing insulating gasket (25), and a clamping nut (26) sequentially fitted onto the sensing electrode (22). The clamping nut (26) is threadedly connected to the electrode base (21) to fix the sensing electrode (22) onto the electrode base (21). The O-ring (24) is used to improve the sealing between the sensing electrode (22) and the electrode base (21).

3. The probe-type water content analyzer according to claim 2, characterized in that: A retaining ring (27) is connected to the clamping nut (26). The retaining ring (27) is engaged inside the electrode sleeve (23) to prevent the electrode sleeve (23) from falling off the sensing electrode (22).

4. The probe-type water content analyzer according to claim 3, characterized in that: A support connecting pipe (3) is also provided between the meter head (1) and the electrode base (21), and the two ends of the support connecting pipe (3) are respectively connected to the meter head (1) and the electrode base (21).

5. The probe-type water content analyzer according to claim 4, characterized in that: The supporting connecting pipe (3) is hollow and its interior is filled with insulating and heat-insulating components (31).

6. The probe-type water content analyzer according to claim 5, characterized in that: The supporting connecting pipe (3) is connected to a flange cover (32) at one end near the electrode base (21), and the flange cover (32) is used to connect to the interface of the pipe.

7. The probe-type water content analyzer according to claim 1, characterized in that: The meter head (1) includes a housing (11), a main circuit control board (12) and a display screen (13). The main circuit control board (12) is located inside the housing (11), and the display screen (13) is located on the housing (11). The main circuit control board (12) is connected to the display screen (13) and the sensing electrode (22) respectively through wires (14).

8. The probe-type water content analyzer according to claim 1, characterized in that: The outer peripheral wall of the electrode sleeve (23) is provided with a number of through grooves (231) evenly spaced along its circumference, for crude oil to enter the electrode sleeve (23) and contact the sensing electrode (22).

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