Pipeline type water content analyzer

Abstract

The utility model provides a pipeline type water content analyzer which comprises a gauge outfit, a sensor assembly and a metal pipeline, the gauge outfit is connected to the peripheral wall of the metal pipeline, and the sensor assembly is arranged in the metal pipeline and electrically connected with the gauge outfit; the sensor assembly comprises an electrode base and two sensing electrodes, the two sensing electrodes are symmetrically connected to the two ends of the electrode base, and the two sensing electrodes and the metal pipeline are coaxially arranged; and the sensing electrode is coated with an insulating coating. The sensing electrode is coated with the insulating coating, and after the sensing electrode is subjected to insulating treatment, the dielectric constant change becomes stable because the insulating treatment can reduce charge accumulation and dielectric loss on the surface of the electrode, so that the fluctuation of the dielectric constant is reduced, and the sensitivity of signal measurement is improved; meanwhile, errors in measurement are reduced due to the stable dielectric constant, and the measurement precision of the water content analyzer is improved. 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] The utility model relates to crude oil water content analysis equipment technical field, specifically speaking is a pipeline type water content analyzer. BACKGROUND

[0002] Crude oil is one of the most important energy resources on earth, and it plays a crucial role in the global economy. Among them, the water content of crude oil is an important indicator, which has an important influence on the production and processing of the oil industry. The water content in crude oil is a very important parameter for the oil industry, and the presence of water will cause a series of problems in the process of oil transportation and storage, for example, water will combine with sulfide and acid in crude oil to generate sulfuric acid and sulfate, accelerating the corrosion of pipelines and storage tanks. In addition, the presence of water in crude oil also affects the separation effect and product quality in the refining process, reducing the efficiency and service life of the refining equipment. Therefore, accurate measurement of the water content in crude oil is of great significance to the production and processing of the oil industry.

[0003] The existing online instrument commonly used to detect the water content of crude oil is a water content analyzer, and its detection method includes capacitance conductivity method, radio frequency method, electromagnetic wave method and electromagnetic wave method. Its principle is to emit electromagnetic waves of different frequencies to the crude oil medium through the sensor probe, and according to the phenomenon that the medium absorbs different electromagnetic wave energy when the water content in the crude oil is different, the water content of the crude oil is measured. However, these water content analyzers have some common problems: due to the design process of the sensing electrode, the measurement accuracy is not high, which is easy to cause measurement error; the sealing structure of the sensor assembly is not ideal, and liquid leakage is easy to occur under high pressure working condition, which has safety hidden danger; the sensor probe is also easy to be corroded by long-term contact with crude oil, affecting the service life. UTILITY MODEL CONTENT

[0004] The technical problem to be solved by the utility model is to overcome the defects of the above existing technology, and to provide a pipeline type water content analyzer which can improve the measurement accuracy.

[0005] The technical solution of the utility model is to provide a pipeline type water content analyzer with the following structure: a meter head, a sensor assembly and a metal pipeline, the meter head is connected to the outer peripheral wall of the metal pipeline, the sensor assembly is arranged in the metal pipeline and electrically connected with the meter head; the sensor assembly includes an electrode base and a sensing electrode, the sensing electrode is two, symmetrically connected to both ends of the electrode base, and coaxially arranged with the metal pipeline; an insulating coating is coated on the sensing electrode to improve the sensitivity of the signal.

[0006] After adopting the above structure, compared with the prior art, the pipeline type water content analyzer of the utility model has the following advantages:

[0007] The utility model discloses a sensor electrode is coated with insulating coating on, and the signal change of sensor will become more sensitive and stable after the insulation treatment of sensor electrode, this is because the insulation treatment can reduce the charge accumulation and dielectric loss of electrode surface, thereby reducing the fluctuation of dielectric constant, in electromagnetic wave measurement, the slight change of dielectric constant can all lead to the remarkable change of electromagnetic wave signal, and therefore the stability of dielectric constant means that the change of electromagnetic wave signal is more sensitive, thereby improving the sensitivity of measurement, and simultaneously, the stable dielectric constant reduces the error in measurement, thereby improving the measurement precision of water content analyzer.

[0008] In addition, the insulating coating on the sensing electrode can also isolate direct contact with crude oil, preventing the sensing electrode from being contaminated and corroded, and improving its service life.

[0009] As preferred, the sensor assembly further comprises an O-shaped sealing ring, a sealing insulating gasket and a compression nut, which are sequentially sleeved on the sensing electrode, the compression nut is threadedly connected with the electrode base for fixing the sensing electrode on the electrode base, and the O-shaped sealing ring is used to improve the sealing performance between the sensing electrode and the electrode base. Through cooperation of the O-shaped sealing ring, the sealing insulating gasket and the compression nut, the sealing performance of the connection between the sensing electrode and the electrode base can be improved, and the leakage of crude oil can be avoided.

[0010] As preferred, a hollow support connecting pipe is further arranged between the meter head and the metal pipeline, a through hole is arranged on the outer circumferential wall of the metal pipeline and is in communication with the inside of the metal pipeline, a mounting seat is connected to the through hole, and the two ends of the support connecting pipe are detachably connected with the meter head and the mounting seat.

[0011] As preferred, the support connecting pipe is filled with an insulating and heat-insulating member. The pressure of the crude oil pipeline is high, and the temperature is also relatively high. Arranging the hollow support connecting pipe between the meter head and the metal pipeline and filling the support connecting pipe with the insulating and heat-insulating member can reduce the heat transferred from the metal pipeline to the meter head, avoid the influence of high temperature on the electrical components in the meter head, and reduce the failure rate.

[0012] As preferred, the meter head comprises a shell, a circuit main control board and a display screen, the circuit main control board is arranged in the shell, and the display screen is arranged on the shell; and the circuit main control board is connected with the display screen and the sensing electrode through wires.

[0013] As preferred, flanges are connected to the two ends of the metal pipeline for connecting with the pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model.

[0015] Figure 2 It is a sectional view of the utility model.

[0016] Figure 3 The utility model discloses an assembly drawing.

[0017] Mark explanation:

[0018] 1, table head, 11, shell, 12, circuit main control board, 13, display screen, 14, wire, 2, sensor assembly, 21, electrode base, 22, sensing electrode, 23, O-shaped sealing ring, 24, sealed insulating gasket, 25, compression nut, 3, metal pipeline, 31, through -hole, 32, mounting seat, 33, flange, 4, support connecting pipe, 41, insulating heat insulating piece. DETAILED DESCRIPTION

[0019] The utility model will be described in further detail below in combination with the drawings and specific embodiment.

[0020] In the description of the utility model, it is understood that the orientation or position relation indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is the orientation or position relation shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore can not be understood as a limitation on the utility model, and the terms "first", "second" and the like are only for distinguishing the names of various components, and do not have primary and secondary relations, and therefore can not be understood as a limitation on the utility model.

[0021] As shown in Figure 1 , Figure 2 and Figure 3 ;

[0022] The utility model discloses a pipeline formula water content analyzer: including table head 1, sensor assembly 2 and metal pipeline 3, table head 1 is connected on the outer circumferential wall of metal pipeline 3, and sensor assembly 2 sets up in metal pipeline 3, and is electrically connected with table head 1.

[0023] Sensor assembly 2 includes electrode base 21 and sensing electrode 22, and sensing electrode 22 is two, and is symmetrically connected at the both ends of electrode base 21, and is coaxially arranged with metal pipeline 3, and sensing electrode 22 is coated with insulating coating, and is used to improve the sensitivity of signal.

[0024] The utility model discloses a sensor electrode 22 is coated with insulating coating, and the dielectric constant change will become stable after the insulation treatment of sensor electrode 22, this is because the insulation treatment can reduce the charge accumulation and dielectric loss of electrode surface, thereby reducing the fluctuation of dielectric constant, in electromagnetic wave measurement, the slight change of dielectric constant will cause the significant change of electromagnetic wave signal, and therefore the stability of dielectric constant means that the change of electromagnetic wave signal is more sensitive, thereby improving the sensitivity of measurement, at the same time, the stable dielectric constant reduces the error in measurement, thereby improving the measurement precision of water content analyzer.

[0025] In addition, the insulating coating on the sensor electrode 22 can also isolate direct contact with crude oil, preventing the sensor electrode 22 from being contaminated and corroded, and improving its service life.

[0026] The sensor assembly 2 further includes an O-ring 23, a sealing insulating gasket 24 and a compression nut 25, which are sequentially sleeved on the sensor electrode 22. The compression nut 25 is threadedly connected with the electrode base 21 and is used to fix the sensor electrode 22 on the electrode base 21. The O-ring 23 is used to improve the sealing performance between the sensor electrode 22 and the electrode base 21. Through the cooperation of the O-ring 23, the sealing insulating gasket 24 and the compression nut 25, the sealing performance of the connection between the sensor electrode 22 and the electrode base 21 can be improved, and the leakage of crude oil can be avoided.

[0027] A hollow support connecting pipe 4 is further arranged between the gauge head 1 and the metal pipeline 3. A through hole 31 is arranged on the outer peripheral wall of the metal pipeline 3 and is connected with the inside of the metal pipeline 3. An installation seat 32 is connected at the through hole 31. The two ends of the support connecting pipe 4 are detachably connected with the gauge head 1 and the installation seat 32, respectively.

[0028] The support connecting pipe 4 is filled with an insulating and heat insulating member 41 made of cylindrical insulating material (such as polyurethane foam). The insulating and heat insulating member 41 has a through hole extending along its axis, which is used for the lead 14 connected with the sensor electrode 22 to pass through. The crude oil pipeline has high pressure and relatively high temperature. By arranging the hollow support connecting pipe 4 between the gauge head 1 and the metal pipeline 3 and filling the support connecting pipe 4 with the insulating and heat insulating member 41, the heat transferred from the metal pipeline 3 to the gauge head 1 can be reduced, the electrical components in the gauge head 1 can be prevented from being affected by high temperature, and the failure rate can be reduced.

[0029] As shown in FIG. Figure 2 The gauge head 1 includes a shell 11, a circuit main control board 12 and a display screen 13. The circuit main control board 12 is arranged in the shell 11, and the display screen 13 is arranged on the shell 11. The circuit main control board 12 is connected with the display screen 13 and the sensor electrode 22 through the lead (signal line) 14, respectively.

[0030] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered in the protection scope of the present application, therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A pipeline water content analyzer, characterized in that: The invention comprises a meter head (1), a sensor assembly (2) and a metal pipe (3), wherein the meter head (1) is connected to the outer peripheral wall of the metal pipe (3), and the sensor assembly (2) is arranged in the metal pipe (3) and electrically connected to the meter head (1); the sensor assembly (2) comprises an electrode base (21) and a sensing electrode (22), and the sensing electrodes (22) are two and symmetrically connected to the two ends of the electrode base (21) and are arranged coaxially with the metal pipe (3); and the sensing electrodes (22) are coated with an insulating coating to improve the sensitivity and stability of the measurement signal.

2. The pipeline water content analyzer according to claim 1, characterized in that: The sensor assembly (2) further comprises an O-ring (23), a sealing insulating gasket (24) and a compression nut (25) which are sequentially sleeved on the sensing electrode (22); the compression nut (25) is threadedly connected to the electrode base (21) and is used to fix the sensing electrode (22) on the electrode base (21); and the O-ring (23) is used to improve the sealing between the sensing electrode (22) and the electrode base (21).

3. The pipeline water content analyzer according to claim 2, characterized in that: A hollow supporting connecting pipe (4) is further provided between the meter head (1) and the metal pipe (3); a through hole (31) communicating with the interior of the metal pipe (3) is provided on the outer peripheral wall of the metal pipe (3); a mounting seat (32) is connected to the through hole (31); and both ends of the supporting connecting pipe (4) are detachably connected to the meter head (1) and the mounting seat (32), respectively.

4. The pipeline water content analyzer according to claim 3, characterized in that: The supporting connecting pipe (4) is filled with an insulating and heat-insulating component (41).

5. The pipeline water content analyzer according to claim 4, characterized in that: The meter head (1) comprises a housing (11), a circuit main control board (12) and a display screen (13); the circuit main control board (12) is arranged in the housing (11), and the display screen (13) is arranged on the housing (11); the circuit main control board (12) is connected to the display screen (13) and the sensing electrode (22) respectively through a wire (14).

6. The pipeline water content analyzer according to claim 1, characterized in that: Both ends of the metal pipe (3) are connected with flanges (33) for connection with the pipe.

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