Device for detecting open water in heavy oil

Abstract

The utility model relates to a device for detecting water in heavy oil. The device comprises a microwave probe, a lower end cover, a scraping block, a centralizing ring, a guide block, a sleeve, an electric push rod, an upper end cover, a cable and a control display, the upper end of the sleeve is connected with the upper end cover; the centralizing ring, the scraping block and the lower end cover are sequentially mounted at the lower end of the sleeve; the electric push rod, the guide block and the microwave probe are sequentially connected and mounted in the sleeve; the upper end of the electric push rod is fixed to the upper portion of the sleeve, and the microwave probe penetrates through the centralizing ring, the scraping block and the lower end cover. And the electric push rod and the microwave probe are communicated with the control display through cables. By applying the device for detecting the open water in the heavy oil, the high-viscosity covering on the surface of the microwave probe can be effectively removed, the sensitivity of the microwave probe is improved, and the problem that the open water in the heavy viscous oil is difficult to effectively measure is solved.

Description

Technical Field

[0001] This utility model relates to the field of oil-water interface detection, specifically a device for detecting water in heavy oil. Background Technology

[0002] Crude oil tanker metering and shore tank metering are affected by a variety of factors. In particular, the measurement of free water in heavy oil products with high viscosity is not very effective or even difficult, which often leads to losses for the receiving party.

[0003] There are various portable instruments for measuring oil-water interfaces, each with different measurement principles and application ranges. Currently, capacitive and conductive oil-water interface meters are widely used for oil interface measurement. However, most current oil-water interface meters are not suitable for measuring free water in high-viscosity, easily agglomerated heavy oils. The main reason is that in high-viscosity, heavy oils, the sensor surface is easily adhered and covered by the heavy oil, leading to severe signal distortion. Measuring free water in high-viscosity, heavy oils has always been a challenge in the industry.

[0004] Currently, self-cleaning probes have also emerged. However, the measurement principle of the instrument is based on the conductivity of the medium. In actual use, even after cleaning, a small amount of oil will remain on the surface of the sensing unit, which will still lead to a decrease in the instrument's measurement sensitivity. Utility Model Content

[0005] This invention aims to solve the problem of effective measurement of free water in heavy oil products. It provides a device for detecting free water in heavy oil products based on microwave reflection and enhances the self-cleaning design of the probe. This ensures that oil stains and impurities adhering to the surface of the microwave probe are effectively removed during the detection of free water in high-viscosity heavy oil products, keeping the surface of the microwave probe clean and improving the sensitivity and reliability of free water detection.

[0006] To achieve the above technical objectives, this utility model provides the following technical solution:

[0007] A device for detecting free water in heavy oil, characterized in that it comprises a microwave probe, a lower end cover, a scraper block, a centralizing ring, a guide block, a sleeve, an electric push rod, an upper end cover, a cable, and a control display; the upper end of the sleeve is connected to the upper end cover, and the centralizing ring, scraper block, and lower end cover are sequentially installed on the lower end of the sleeve; the electric push rod, guide block, and microwave probe are sequentially connected and installed inside the sleeve; the upper end of the electric push rod is fixed to the upper part of the sleeve, and the microwave probe passes through the centralizing ring, scraper block, and lower end cover; the electric push rod and the microwave probe are both connected to the control display via a cable.

[0008] The straightening ring is located between the sleeve and the lower end cover, and the scraping block is located inside the lower end cover.

[0009] The lower end cap is ellipsoidal in shape with a through hole at the bottom and a partially countersunk wrench surface on the outer side. This facilitates disassembly and helps the oil at the bottom to float to the surface.

[0010] The scraping block is made of high-density sponge, with a conical shape at the bottom of the central hole to fit with the lower end of the microwave probe. The scraping body is elastic, and when the microwave probe is retracted, the scraping body can completely wrap around the microwave probe to thoroughly remove oil stains from the surface of the microwave probe.

[0011] The guide block is made of insulating material and includes a guide body with a pin hole at the upper end and a threaded hole at the lower part. A sealing ring is installed on the outer side of the guide body, and a wiring hole is provided at the upper part of the guide body. The side of the guide block fits with the inner wall of the sleeve and is equipped with a sealing ring, which can isolate the liquid below and provide good guidance for the microwave probe.

[0012] The upper end of the cover is provided with a sealing head to prevent external media from flowing in.

[0013] The control display has a DC voltage not exceeding 9V and is intrinsically safe and explosion-proof in oil environments, ensuring the safe use of the device.

[0014] When measuring free water in heavy oil, the measuring end is gradually lowered into the oil tank from top to bottom. Simultaneously, the electric actuator and microwave probe are powered. Driven by the electric actuator and guide block, the microwave probe continuously reciprocates, creating friction with the scraper block to constantly remove oil from its surface and keep it clean. When the probe reaches the free water, it intermittently emits and receives microwaves, triggering a free water alarm based on a preset threshold displayed on the control screen.

[0015] This utility model has the following advantages:

[0016] (1) The heavy oil water detection device provided by this utility model can effectively remove the high viscosity covering material on the surface of the microwave probe and improve the sensitivity of the microwave probe during the detection of water in high viscosity heavy oil.

[0017] (2) The voltage of the heavy oil water detection device meets the intrinsically safe explosion-proof requirements, and the device is highly safe.

[0018] (3) The heavy oil water detection device is based on the microwave absorption principle and has higher sensitivity than similar instruments based on the conductivity of the medium. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of the heavy oil water detection device proposed according to this utility model.

[0020] Figure 2 This is a schematic diagram of the structure of the lower end cover described in this utility model.

[0021] Figure 3 yes Figure 2 Sectional view along direction A.

[0022] Figure 4 This is a schematic diagram of the structure of the scraping block described in this utility model.

[0023] Figure 5 This is a schematic diagram of the structure of the guide block described in this utility model.

[0024] Figure 6 This is a schematic diagram of the upper pressure cover described in this utility model.

[0025] like Figures 1-6 As shown, 1 is the microwave probe, 2 is the lower end cover, 2.1 is the wrench plane, 2.2 is the through hole, 3 is the scraper block, 3.1 is the scraper body, 3.2 is the center hole, 4 is the straightening ring, 5 is the guide block, 5.1 is the pin hole, 5.2 is the wire hole, 5.3 is the guide body, 5.4 is the sealing ring, 5.5 is the threaded hole, 6 is the sleeve, 7 is the electric push rod, 8 is the upper end cover, 8.1 is the cover body, 8.2 is the sealing head, 9 is the cable, and 10 is the control display. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and examples:

[0027] like Figure 1 As shown, a device for detecting free water in heavy oil is characterized by comprising a microwave probe 1, a lower end cover 2, a scraper block 3, a straightening ring 4, a guide block 5, a sleeve 6, an electric push rod 7, an upper end cover 8, a cable 9, and a control display 10; the upper end of the sleeve 6 is connected to the upper end cover 8, and the straightening ring 4, the scraper block 3, and the lower end cover 2 are sequentially installed on the lower end of the sleeve 6; the electric push rod 7, the guide block 5, and the microwave probe 1 are sequentially connected and installed inside the sleeve 6; the upper end of the electric push rod 7 is fixed to the upper part of the sleeve 6, and the microwave probe 1 passes through the straightening ring 4, the scraper block 3, and the lower end cover 2; the electric push rod 7 and the microwave probe 1 are both connected to the control display 10 via the cable 9.

[0028] like Figure 2 , Figure 3 As shown, the lower end cap 2 is ellipsoidal in shape, with a through hole 2.2 at the lower end and a wrench plane 2.1 on the outer side. This facilitates disassembly and allows oil to float to the surface at the bottom of the lower end cap 2.

[0029] like Figure 4 As shown, the scraping block 3 is made of high-density sponge, and the lower part of the central hole 3.2 is conical, which fits with the lower end of the microwave probe 1. The scraping body 3.1 is elastic. After the microwave probe 1 is retracted, the scraping body 3.1 can completely wrap the microwave probe 1 and thoroughly remove the oil stains on the surface of the microwave probe 1.

[0030] like Figure 5 As shown, the guide block 5 is made of insulating material, with a pin hole 5.1 at the upper end and a threaded hole 5.5 at the lower part. A sealing ring 5.4 is installed on the outer side of the guide body 5.3, and a wiring hole 5.2 is provided on the upper part of the guide body 5.3. The side of the guide block 5 fits with the inner wall of the sleeve 6 and is equipped with a sealing ring 5.4, which can isolate the liquid below and provide good guidance for the microwave probe 1.

[0031] like Figure 6 As shown, the upper end of the cover body 8.1 of the upper cover 8 is provided with a sealing head 8.2, which can prevent external media from flowing in.

[0032] The control display 10 uses a DC voltage of no more than 9V and has intrinsically safe and explosion-proof characteristics in oil environments, ensuring the safe use of the device.

[0033] When measuring free water in heavy oil, the measuring end of the device is gradually lowered into the oil tank from top to bottom. Simultaneously, the control display 10 supplies power to the electric push rod 7 and the microwave probe 1. Driven by the electric push rod 7 and the guide block 5, the microwave probe 1 continuously reciprocates, creating friction with the scraper block 3 to continuously remove oil stains from its surface, keeping it clean. The microwave probe 1 intermittently emits and receives microwaves. When the microwave probe 1 reaches the free water, a free water alarm is triggered based on a preset threshold in the control display 10.

[0034] In the description of this embodiment, the terms "left," "right," "up," "down," etc., 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. Therefore, they should not be construed as limiting this utility model.

Claims

1. A device for detecting free water in heavy oil, characterized in that: It includes a microwave probe, a lower end cover, a scraping block, a straightening ring, a guide block, a sleeve, an electric push rod, an upper end cover, and a control display. The sleeve has an upper end cover at the top and a lower end cover at the bottom. The upper end of the electric push rod is fixed inside the sleeve, and the bottom is connected to the guide block. The microwave probe is fixed on the guide block and passes through the straightening ring, the scraping block, and the lower end cover in sequence. The electric push rod and the microwave probe are both connected to the control display.

2. The heavy oil water detection device according to claim 1, characterized in that, The straightening ring is located between the sleeve and the lower end cover, and the scraping block is located inside the lower end cover.

3. The heavy oil water detection device according to claim 1, characterized in that: The lower end cover is ellipsoidal in shape, with a through hole at the lower end and a wrench-shaped surface on the outer side.

4. The heavy oil water detection device according to claim 1, characterized in that: The scraping block is made of high-density sponge, and the lower part of the central hole of the scraping block is conical, which fits with the lower end of the microwave probe.

5. The heavy oil water detection device according to claim 1, characterized in that: The guide block is made of insulating material and includes a guide body. The guide body has a pin hole at the upper end and a threaded hole at the lower part. A sealing ring is installed on the outer side of the guide body, and a wiring hole is provided at the upper part of the guide body. The side of the guide block mates with the inner wall of the sleeve.

6. The heavy oil water detection device according to claim 1, characterized in that: The upper end of the cover body is provided with a sealing head.

7. The heavy oil water detection device according to claim 1, characterized in that: The control display uses a DC voltage not exceeding 9V.

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