Crude oil water content detection device

Abstract

Crude oil water content detection device, comprising a lower plate: a linear module being mounted on the lower plate in a vertical direction, and a self-cleaning assembly being mounted on a front face of a lower portion of the linear module via a bracket and configured to clean a water content sensor; a vertically arranged water content sensor being mounted on a sliding table of the linear module via a bracket, and the water content sensor being arranged concentrically with and in a clearance fit relative to an internal hole of the self-cleaning assembly; a water content sensing portion at the lower end of the water content sensor comprising an insulating cover, and a plurality of metal sensing rods being distributed circumferentially on the insulating cover to improve the stability and accuracy of detecting a water presence signal;A tension-compression sensor is disposed at the upper end of the sensor support and connected to a water content sensor housing via a threaded nipple to detect resistance encountered by the sensor during movement. The advantages are as follows: the present utility model offers fast detection speed, high accuracy, and simple and convenient operation, and can meet the user's needs for detecting the water content of crude oil during production, handling, and delivery based on quantity. Abstract figure: Figure 2;

Description

Title of the invention: Crude oil water content detection device. Technical field of the invention

[0001] The present utility model relates to a detection device, and particularly a device for detecting the water content of crude oil. Prior art

[0002] As an important parameter of crude oil, water content is a key factor in oil production by extraction from an oil field, as well as in the transportation and delivery of crude oil. The accuracy of water content detection data has a direct impact on operations in terms of crude oil production, crude oil transportation, and trade settlement, particularly in determining water / oil producing zones in oil wells, calculating crude oil production volumes, predicting the productive life of oil wells, transporting crude oil, and modifying the quantity of crude oil delivered.

[0003] Currently, in the petroleum sector, the water content of crude oil is rapidly detected by sampling, typically using a crude oil water content detection instrument. The detection instrument comprises an electrostatic dehydration crude oil water content detection instrument that separates the oil and water present in the crude oil into different layers by applying a voltage to the sample, and calculates the water content by measuring the thickness of the oil layer and the water layer in a sample cup.The detection instrument also includes a centrifugal instrument for detecting the water content of crude oil, in which a sample fills a centrifuge tube, a centrifuge is used for centrifugal treatment to separate the oil and water present in the crude oil into different layers, and the water content of the sample is calculated by measuring the thickness of the oil layer and the water layer in the centrifuge tube.

[0004] These methods for detecting water content pose the following problems:

[0005] 1. When the water content in the sample is low, the stratification effect in Applying the voltage might not be ideal, and a detection error could be caused.

[0006] 2. When the sample contains many light components, the application of the Voltage could cause damage to lightweight components and lead to a detection error.

[0007] 3. Filling the centrifuge tube with the sample requires mixing and the separation of the sample, which makes it very difficult to maintain consistent operations and causes a detection error.

[0008] 4. When the sample contains an emulsifier, it is necessary to add a demulsifier to demulsify the sample by both the electrostatic dehydration process and the centrifugal process, and the experience and skill of the operator both have an impact on the detection data.

[0009] 5. When the sample contains an emulsifier and the water content is low, The demulsifying effect of the demulsifying agent may not be ideal, resulting in a detection error. Summary of the invention

[0010] The technical problem to be solved by the present utility model consists of providing a crude oil water content detection device with fast detection speed, high accuracy and simple and convenient operation.

[0011] The technical solutions of the present utility model are as follows:

[0012] A crude oil water content detection device, comprising a lower plate:

[0013] a linear module being mounted on the lower plate in a vertical direction, and a self-cleaning assembly being mounted on a front face of a lower part of the linear module by means of a bracket and configured to clean a water content sensor; a vertically arranged water content sensor being mounted on a sliding table of the linear module by means of a bracket, and the water content sensor being arranged concentrically with and in a clearance fit with respect to an internal hole of the self-cleaning assembly, and configured to be inserted into a sensing container in order to detect the water content;

[0014] a measurement principle for the water content sensor comprising but not limited to: an electromagnetic wave, an optical spectrum of an optic, an electrical conductivity, and a dielectric constant;

[0015] an insulating cover being disposed at a lower end of the sensor, and a plurality of metal sensing rods being distributed circumferentially on the insulating cover to improve the stability and accuracy of detection of a water presence signal;

[0016] a tension-compression sensor being disposed at an upper end of the sensor support and linked to a sensor housing by means of a threaded nipple to detect a resistance situation encountered by the sensor during a movement.

[0017] In addition, the lower plate is preferably covered by an enclosure, and the linear module, a control means, a signal acquisition module and a motor control are arranged in the enclosure.

[0018] In addition, signal output ends of the water content sensor and the tension-compression sensor are preferably connected to the control means via the signal acquisition module to acquire a water content signal and a tension-compression signal; the control means is connected to a motor of the linear module via the motor control to control the operation of the linear module.

[0019] In addition, the self-cleaning assembly preferably comprises a self-cleaning seat fixed to a lower surface of a front end of the cleaning console, the self-cleaning seat is arranged concentrically with a through hole made at the front end of the cleaning console, a self-cleaning sleeve is fixed to a lower end of the self-cleaning seat, and an O-ring is disposed in the self-cleaning sleeve.

[0020] In addition, a display module is preferably mounted on the enclosure, and the control means is a programmable control means connected in communication to the display module to set operating parameters of the water content sensor and display the water content.

[0021] In addition, a temperature sensor is preferably disposed in the insulating cover to detect a temperature of the liquid and transmit the temperature to the control means, thus modifying the detected signal of presence of water.

[0022] The present utility model has the following advantageous effects:

[0023] 1. The water content sensor is used to detect the water content of petroleum raw.

[0024] 2. The linear module drives the sensor support with a back-and-forth movement and drives the water content sensor to be inserted into the detection vessel through the inner bore of the self-cleaning assembly, thereby performing water content detection at a sufficient number of point positions of the crude oil in the detection vessel, and transmitting the water content via the control means to the display module for calculation processing and display, and thus exhibiting fast detection speed, high accuracy and simple and convenient operation.

[0025] 3. Via the tension-compression sensor disposed at the end At the top of the sensor support, the resistance encountered by the sensor during movement can be detected and reported to the control unit. When resistance is encountered, the control unit receives the feedback signal and commands the linear module motor to stop moving. in the original direction and returns to the initial position, thus achieving the objective of effectively protecting the sensor.

[0026] 4. The stability and accuracy of water presence signal detection can be improved by means of the plurality of metallic sensing rods distributed circumferentially on the outer edge of the water content sensing part at the lower end of the water content sensor. Brief description of the figures

[0027] Figure 1 is a schematic structural diagram of the present utility model.

[0028] Figure 2 is a perspective view of Figure 1.

[0029] [Fig.3] is a partial sectional view taken along line AA of [Fig.1].

[0030] [Fig.4] is a partially enlarged view of [Fig.3].

[0031] The [Fig.5] is a block diagram of a circuit of the present utility model.

[0032] Figure 6 is a perspective view of the present utility model, a rear panel on one side of an enclosure being removed.

[0033] In the figure: a lower plate 1, an enclosure 2, a right angle 3 for positioning, a display module 4, a self-cleaning assembly 5, a cleaning console 6, a water content sensor 7, a linear module 8, a switch deflector 9, a photoelectric switch 10, a tension-compression sensor 11, a threaded nipple 12, a sensor console 13, a mounting frame 14, a signal acquisition module 15, a control means 16, a power supply module 17, and a motor control 18. Detailed description of the invention

[0034] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the drawings in the embodiments of this utility model. It is understood that the embodiments described are only a part of the embodiments of this utility model and not all of them. Based on the embodiments of this utility model, all other embodiments obtained without any inventive effort fall within the scope of protection of this utility model.

[0035] As shown in [Fig. 1] to 6, a crude oil water content detection device according to the present utility model comprises a rectangular lower plate 1, an enclosure 2 is fixed to the lower plate 1, two compartments are arranged side by side in a left-right direction in the enclosure 2, and a right angle 3 for positioning is formed at one end of the outside of the enclosure 2 near the lower plate to position a detection container placed on the lower plate 1.

[0036] A linear module 8 is fixedly mounted in a vertical direction by means of a mounting frame 14 in the left compartment of the enclosure 2 on the lower plate 1, a motor at the lower end of the linear module 8 is placed in the enclosure, the linear module 8 exits through a rectangular opening on a top surface of the enclosure 2, an L-shaped cleaning console 6 is fixed to a front face of the lower part of the linear module 8 by means of a screw, and a self-cleaning assembly 5 is fixed to a front end of the cleaning console 6 for cleaning a water content sensor.A photoelectric switch 10 is mounted on one side of an upper end of the linear module 8 via a plate frame, and an L-shaped switch deflector 9 is fixed to a sliding table of the linear module 8 to position an initial position of the sliding table of the linear module 8.

[0037] The self-cleaning assembly 5 includes a self-cleaning seat 501 fixed to the lower surface of the front end of the cleaning console 6 by a screw, the self-cleaning seat 501 is arranged concentrically with a through hole made at the front end of the cleaning console 6, a self-cleaning sleeve 503 is fixed to the lower end of the self-cleaning seat 501 by a nut 502, and two O-rings are incorporated in the self-cleaning sleeve 503.

[0038] A vertically arranged water content sensor 7 is mounted on the sliding table of the linear module 8 via a sensor bracket 13, and the water content sensor 7 is arranged concentrically with and in a clearance fit relative to an internal hole of the self-cleaning assembly 5, and is inserted into a sensing container to detect the water content.

[0039] The water content sensor 7 comprises a tubular casing 701, a signal acquisition circuit board 703 is placed inside the casing and sealed, a water content sensing portion is connected to the lower end of the casing 701 via a threaded joint, the water content sensing portion includes an insulating cover 702, and a plurality of metal sensing rods 704 arranged radially are inserted and distributed around a circumference of the insulating cover 702, and the metal sensing rods 704 are preferably copper rods and are electrically connected to the signal acquisition circuit board 703 via wires so as to improve the stability and accuracy of detecting a water presence signal. This embodiment is demonstrated by way of example with 12 metal sensing rods.

[0040] A temperature sensor 705 is also inserted in the insulating cover 702 and used to detect the oil temperature and transmit the temperature by means of control via the 703 signal acquisition circuit board, thus modifying the detected signal of water presence.

[0041] A tensile-compression sensor 11 is fixed to a front end of the sensor bracket 13 by means of a screw, and a compression element of the tensile-compression sensor 11 is screwed to the upper end of the housing of the water content sensor 7 via a threaded nipple 12 and is used to detect a resistance situation encountered when the water content sensor 7 descends. A power and communication cable from the signal acquisition circuit board 703 passes through a central hole in the screw head.

[0042] A power supply module 17, a control means 16, a signal acquisition module 15 and a motor control 18 are fixed in the right compartment of the enclosure 2 on the lower plate 1, an output end of the power supply module 17 is electrically connected to modules such as the control means 16, the signal acquisition module 15 and the motor control 18, respectively, the control means 16 is a programmable control means, the signal acquisition module 15 is an A / D module, and signal output ends of the water content sensor 7 and the tension-compression sensor 11 are connected to the control means 16 via the signal acquisition module 15 to acquire a water content signal and a compression signal;The control means 16 is connected to a motor 801 at the lower end of the linear module 8 via the motor control to control the operation of the linear module 8.

[0043] A rectangular mounting opening is provided on a slope on the right side of the enclosure 2, and a display module 4 is mounted. The control means is connected to the display module 4 to adjust the operating parameters of the water content sensor 7 and to display the water content. A rear panel is detachably mounted on the rear faces of the two compartments of the enclosure 2, respectively, to facilitate mounting. The display module 4 is an all-in-one touchscreen display.

[0044] During use, the detection container containing crude oil is placed on the lower plate 1 and against the right-angle positioning 3; the control means starts the motor of the linear module 8, and the motor drives the sensor support in an intermittent up-and-down motion; when the sensor support descends, the water content sensor 7 is driven down and inserted into the detection container; the water content of the crude oil in the container can be detected by a plurality of metal sensing rods at the lower end of the water content sensor 7, a liquid temperature signal is acquired by the temperature sensor 705, and the The water content signal and the temperature signal are simultaneously transmitted to the control unit for data processing. After a detection operating cycle has been completed, the result of the crude oil water content detection in the detection vessel can be displayed via the display module 4.

[0045] When the water content sensor 7 encounters an obstacle in the up-down movement, a tension-compression anomaly is detected by the tension-compression sensor 11 and sent back to the control means; after receiving the feedback signal, the control means commands the linear module 8 to stop moving and return to the initial position, thus achieving the objective of effectively protecting the water content sensor 7.

[0046] Although embodiments of the present invention have been disclosed as above, they are not limited simply to those set forth in the description and embodiments, and they could be applied to various fields suitable for the present utility model. For those skilled in the art, further modifications could be readily made, and the present utility model is not limited to the particular details and illustrations presented and described herein, without departing from the general concept defined by the claims and their equivalents.

Claims

Demands

1. A crude oil water content detection device, comprising a lower plate, a linear module being mounted on the lower plate in a vertical direction, and a self-cleaning assembly being mounted on a front face of a lower portion of the linear module via a bracket and configured to clean a water content sensor; a vertically arranged water content sensor being mounted on a sliding table of the linear module via a bracket, and the water content sensor being arranged concentrically with and in a clearance fit with respect to an internal hole of the self-cleaning assembly, and configured to be inserted into a detection vessel to detect the water content; a measurement principle of the water content sensor comprising but not limited to: an electromagnetic wave, an optical spectrum of an optic, an electrical conductivity, and a dielectric constant;an insulating cover being disposed at a lower end of the sensor, and a plurality of metallic sensing rods being distributed circumferentially over the insulating cover to improve the stability and accuracy of detecting a signal of presence of water; and a tensile-compression sensor being disposed at an upper end of the sensor support and linked to a sensor housing via a threaded nipple to detect a resistance situation encountered by the sensor during movement.

2. Crude oil water content detection device according to claim 1, the lower plate being covered by an enclosure, and the linear module, a control means, a signal acquisition module and a motor control being disposed in the enclosure.

3. Crude oil water content detection device according to claim 2, the signal output ends of the water content sensor and the tensile-compression sensor being connected to the control means via the signal acquisition module to acquire a water content signal and a tensile-compression signal; and the control means being connected to a linear module motor via motor control to control the operation of the linear module.

4. Crude oil water content detection device according to claim 1, the self-cleaning assembly comprising a self-cleaning seat fixed to a lower surface of a front end of the cleaning console, the self-cleaning seat being arranged concentrically with a through hole made at the front end of the cleaning console, a self-cleaning sleeve being fixed to a lower end of the self-cleaning seat, and an O-ring being disposed in the self-cleaning sleeve.

5. Crude oil water content detection device according to claim 3, a display module being mounted on the enclosure, and the control means being a programmable control means and connected in communication with the display module to set operating parameters of the water content sensor and display a water content value.

6. Crude oil water content detection device according to claim 3, a temperature sensor being disposed in the insulating cover to detect a liquid temperature and transmit the temperature to the control means, thus modifying the detected signal of presence of water.

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