A water quality detection device for oil and gas fields

Abstract

This utility model belongs to the field of water testing, and specifically relates to a water quality testing device for oil and gas fields. To save labor, this utility model proposes a water quality testing device for oil and gas fields. The device includes a water quality analyzer, a container, an inlet pipe connector, and an outlet pipe connector. The container includes a cover, an outer cylinder, and an inner cylinder. The outer cylinder is flanged to the cover, and has a first flange at its upper end. The cover has a corresponding second flange. The inner cylinder has an outwardly folded edge at its upper end, which is clamped between the first and second flanges. The inlet and outlet pipe connectors communicate only with the inner cylinder. The probe of the water quality analyzer is mounted on the cover, with its lower end located inside the inner cylinder. Because the water flows only inside the inner cylinder and not in the outer cylinder fixed to the ground, cleaning only requires removing and washing the inner cylinder, making cleaning convenient and effectively reducing the labor intensity of workers.

Description

Technical Field

[0001] This utility model belongs to the field of water testing, and in particular relates to a water quality testing device for oil and gas fields. Background Technology

[0002] When treating wastewater from oil and gas fields, the water in the wastewater treatment plant needs to be treated to meet the standards for oil reservoir reinjection. After the wastewater from the oil and gas fields is treated at the wastewater treatment plant, the treated water needs to be tested using water quality testing equipment to determine whether the water quality is up to standard. However, the treated water exhibits severe salt exudation and scaling, which easily clogs the water quality testing equipment. Furthermore, the valves are easily blocked by salt and scale, making it impossible to install valves in the water quality testing equipment.

[0003] Currently, because the water quality testing equipment is installed in the field, it consists of a steel testing container and a water quality analyzer. The steel testing container can withstand harsh conditions such as wind, sun, and rain. The testing container includes a steel pipe with a diameter of 330 mm and a height of 400 mm. The upper end of the pipe is sealed with a 3 mm thick upper steel plate, and the lower end is sealed with a 3 mm thick annular lower steel plate. The upper steel plate has a 21 mm diameter opening and a water quality probe hole. The inlet pipe is inserted into the testing container through the opening, and the probe of the water quality analyzer extends into the container through the probe hole. A 350 mm high, 50 mm diameter outlet pipe is connected to the middle of the annular lower steel plate. Water flows over the outlet pipe and out of the testing container; the water quality analyzer is used to test the water quality.

[0004] On the one hand, the container is fixed to the ground on site. After the water outlet pipe is blocked, the upper steel plate must be opened for cleaning. Due to the limitations of the on-site environmental factors, it is difficult to clean the internal space of the testing container. At the same time, after the water outlet pipe is blocked, water will overflow from the opening and pollute the environment. On the other hand, the water flow will corrode the steel testing container.

[0005] To facilitate understanding by those skilled in the art, a patent document is provided below for reference.

[0006] Chinese utility model patent with authorization announcement number CN206258444U and authorization announcement date of June 16, 2017 discloses an online water quality detection device, including a liquid collection cylinder, an inlet pipe, an outlet pipe, and a water quality detector. The inlet pipe is connected to the lower part of the liquid collection cylinder, and the outlet pipe is connected to the upper part of the liquid collection cylinder. A detection hole is opened on the liquid collection cylinder, and the probe of the water quality detector extends into the liquid collection cylinder through the detection hole. A sealing ring is provided between the detection hole and the water quality detector. The rest of the liquid collection cylinder is a sealed structure.

[0007] When using the aforementioned online water quality monitoring device, external gases cannot enter the collection cylinder, thus ensuring that the sample inside the cylinder is not contaminated by ambient gases. Furthermore, the liquid inside the collection cylinder will not overflow into the environment, thereby preventing liquid pollution.

[0008] However, when the above-mentioned online water quality monitoring device is used to monitor treated oil and gas field wastewater, a large amount of salt and scale will accumulate in the liquid collection cylinder due to severe salt exudation and scaling, making it difficult to clean. Utility Model Content

[0009] The purpose of this invention is to provide a water quality testing device for oil and gas fields to solve the technical problem that existing containers are not easy to clean.

[0010] To achieve the above objectives, the technical solution of the oil and gas field water quality testing device provided by this utility model is as follows:

[0011] A water quality testing device for oil and gas fields includes a water quality analyzer and a container, as well as an inlet pipe connector and an outlet pipe connector. The container includes a cover, an outer cylinder, and an inner cylinder. The outer cylinder is connected to the cover with a flange, and the upper end of the outer cylinder has a first flange. The cover has a corresponding second flange. The upper end of the inner cylinder has an outward folded edge, which is clamped between the first flange and the second flange. The inlet pipe connector and the outlet pipe connector communicate only with the inner cylinder. The probe of the water quality analyzer is mounted on the cover, and the lower end of the probe is located inside the inner cylinder.

[0012] Furthermore, the cover has a first perforation, through which the water inlet pipe connector passes and is fixedly and sealed to the cover.

[0013] Furthermore, a first annular protrusion is provided on the outer surface of the water inlet pipe connector, and a thread is provided on the outer surface of one section of the water inlet pipe connector to form a first threaded section. The first threaded section is located above the first annular protrusion, the first annular protrusion is located below the cover, and a sealing ring is provided between the first annular protrusion and the cover. A first nut located above the cover is connected to the first threaded section. The first nut and the first annular protrusion together clamp the cover to achieve a fixed and sealed connection between the water inlet pipe connector and the cover.

[0014] Furthermore, a second perforation is provided on the outer circumferential surface of the outer cylinder, and a third perforation corresponding to the second perforation is provided on the outer circumferential surface of the inner cylinder. The water outlet pipe connector passes through the second and third perforations, and the water outlet pipe connector is fixedly and sealed to the third perforation.

[0015] Furthermore, a second annular protrusion is provided on the outer surface of the water outlet pipe connector, and a thread is provided on the outer surface of one section of the water outlet pipe connector to form a second threaded section. A sealing ring is provided between the second annular protrusion and the inner wall of the inner cylinder, and a second nut located outside the outer cylinder is connected to the second threaded section to achieve a fixed and sealed connection between the water outlet pipe connector and the third perforation through the second annular protrusion and the second nut.

[0016] Furthermore, the outlet of the inlet pipe connector is located at the bottom of the inner cylinder, the inlet of the outlet pipe connector is located at the top of the inner cylinder, and the bottom of the probe is arranged close to the inlet of the outlet pipe connector.

[0017] Furthermore, the outlet of the inlet pipe connector and the inlet of the outlet pipe connector are located at two opposite corners of the inner cylinder, and the bottom of the probe is located on the line connecting the outlet of the inlet pipe connector and the inlet of the outlet pipe connector.

[0018] Furthermore, both the inlet and outlet pipe connectors are straight pipe connectors.

[0019] Furthermore, the water quality testing device for oil and gas fields also includes a fastening nut, a mounting groove on the cover, an internal thread on the inner wall of the mounting groove, an external thread on the fastening nut, and the fastening nut being threaded onto the mounting groove. A self-sealing gasket is provided between the bottom surface of the fastening nut and the bottom wall of the mounting groove, and a self-sealing hole is provided on the self-sealing gasket. Both the fastening nut and the mounting groove have through holes, and the probe passes through the self-sealing hole, the through hole on the fastening nut, and the through hole on the mounting groove simultaneously. The self-sealing gasket is used to clamp and fix the probe.

[0020] Furthermore, the outer cylinder is made of stainless steel, while the inner cylinder is made of corrosion-resistant and easily degradable plastic.

[0021] The beneficial effects of the oil and gas field water quality testing device provided by this utility model are as follows: This utility model is an improved invention. The main difference between this utility model and the prior art is that in this utility model, the container includes an inner cylinder and an outer cylinder, and the water flows only inside the inner cylinder. Therefore, salt and scale only exist inside the inner cylinder. When cleaning the inner cylinder, it can be directly removed for cleaning, making cleaning convenient.

[0022] In actual use, the outer cylinder is fixed to the ground on site, and the outer cylinder protects the inner cylinder and forms a protective cylinder, thereby preventing the inner cylinder from being affected by harsh conditions such as wind, sun, and rain; the water inlet pipe is connected to the water inlet pipe connector, and the water outlet pipe is connected to the water outlet pipe connector, and the water quality tester tests the water quality in the inner cylinder; since there is a sealing ring between the second flange and the outward folded edge of the inner cylinder, water overflow can be prevented, so there is no need to clean the ground around the container every day.

[0023] When the inner cylinder needs to be cleaned, the cover can be removed first, and then the inner cylinder can be taken out for easy cleaning. At the same time, the scale and salt inside the inner cylinder can be poured out to remove impurities. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of the water quality testing device for oil and gas fields according to this utility model (only the probe is shown in the water quality tester).

[0025] Figure 2 for Figure 1 Enlarged view of the structure at the flange connection.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Outer cylinder; 1-1. First flange; 2. Inner cylinder; 2-1. Outward folded edge; 3. Cover; 3-1. Second flange; 4. Outlet pipe connector; 5. Sealing ring; 6. First nut; 7. Inlet pipe connector; 8. Second nut; 9. Fastening nut; 10. Self-sealing gasket; 11. Probe. Detailed Implementation

[0028] To address the problems in the background technology, the core inventive concept of this utility model is as follows: an inner cylinder and an outer cylinder are provided, the outer cylinder is fixed on the ground and protects the inner cylinder, and water flows only into the inner cylinder. During cleaning, only the inner cylinder needs to be removed and cleaned, making cleaning convenient and saving labor.

[0029] The present invention will be further described in detail below with reference to embodiments of the water quality testing device for oil and gas fields.

[0030] like Figures 1-2 As shown, in a basic implementation, the water quality testing device for oil and gas fields includes a water quality analyzer, a container, an inlet pipe connector 7, and an outlet pipe connector 4. The container includes a cover 3, an outer cylinder 1, and an inner cylinder 2. The outer cylinder 1 is flanged to the cover 3, and the upper end of the outer cylinder 1 has a first flange 1-1. The cover 3 has a corresponding second flange 3-1. Bolts pass through both the first flange 1-1 and the second flange 3-1 and are connected to nuts. The upper end of the inner cylinder 2 has an outwardly folded edge 2-1, which is clamped between the first flange 1-1 and the second flange 3-1 to fix the inner cylinder 2. The inlet pipe connector 7 and the outlet pipe connector 4 communicate only with the inner cylinder 2. The probe 11 of the water quality analyzer is mounted on the cover 3, and the lower end of the probe 11 is located inside the inner cylinder 2.

[0031] Preferably, in one embodiment, the outer cylinder 1 is made of stainless steel, and the inner cylinder 2 is made of corrosion-resistant and easily degradable plastic, such as polylactic acid plastic, polyhydroxyalkanoate plastic or polyadipate plastic, which is environmentally friendly.

[0032] In other embodiments, the inner cylinder 2 may also be made of non-degradable plastics such as polytetrafluoroethylene, or the inner cylinder 2 may be made of thin-film corrosion-resistant stainless steel.

[0033] It should be noted that the outer cylinder 1 is a protective cylinder installed outdoors, and it needs to be able to withstand harsh conditions such as wind, sun and rain; the lighter the weight of the inner cylinder 2, the easier it is for staff to remove the inner cylinder 2 and clean it, which is more conducive to reducing the labor intensity of staff.

[0034] In actual use, the outer cylinder 1 is fixed to the ground on site, and the outer cylinder 1 protects the inner cylinder 2, thereby preventing the inner cylinder 2 from being affected by harsh conditions such as wind, sun and rain; the water inlet pipe is connected to the water inlet pipe connector 7, and the water outlet pipe is connected to the water outlet pipe connector 4. The water quality tester tests the water quality in the inner cylinder 2; since a sealing ring 5 is provided between the second flange 3-1 and the outward folded edge 2-1 of the inner cylinder 2, water overflow can be prevented, so there is no need to clean the ground around the container every day.

[0035] When it is necessary to clean the inner cylinder 2, the cover 3 can be removed first, and then the inner cylinder 2 can be taken out, so that the inner cylinder 2 can be cleaned conveniently. At the same time, the scale and salt in the inner cylinder 2 can be poured out to remove the impurities in the inner cylinder 2.

[0036] The following are Figure 1 The installation method of the water inlet pipe connector 7 is described in detail.

[0037] like Figure 1 As shown, in one embodiment, the cover 3 is provided with a first perforation, and the water inlet pipe connector 7 passes through the first perforation and is fixedly and sealed to the cover 3.

[0038] exist Figure 1 In the embodiment shown, a first annular protrusion is provided on the outer surface of the water inlet pipe connector 7, and a thread is provided on the outer surface of one section of the water inlet pipe connector 7 to form a first threaded section. The first threaded section is located above the first annular protrusion, and the first annular protrusion is located below the cover 3. A sealing ring 5 is provided between the first annular protrusion and the cover 3. A first nut 6 located above the cover 3 is connected to the first threaded section. The first nut 6 and the first annular protrusion together clamp the cover 3 to achieve a fixed and sealed connection between the water inlet pipe connector 7 and the cover 3. The structure is simple, and the water inlet pipe connector 7 can be removed for cleaning when it is blocked.

[0039] In other embodiments, the water inlet pipe connector 7 can also be welded to the cover 3 to achieve a fixed and sealed connection between the water inlet pipe connector 7 and the cover 3.

[0040] In this type of embodiment, after the cover 3 is removed, the water inlet pipe connector 7 will not interfere with the inner cylinder 2, making it easy to disassemble the inner cylinder 2.

[0041] The following are Figure 1 The installation method of water outlet pipe connector 4 is described in detail.

[0042] like Figure 1 As shown, in one embodiment, the outer cylinder 1 has a second perforation on its outer circumferential surface, and the inner cylinder 2 has a third perforation corresponding to the second perforation on its outer circumferential surface. The water outlet pipe connector 4 passes through the second perforation and the third perforation, and the water outlet pipe connector 4 is fixedly and sealed to the third perforation.

[0043] exist Figure 1 In the embodiment shown, a second annular protrusion is provided on the outer surface of the water outlet pipe connector 4, and a thread is provided on the outer surface of one section of the water outlet pipe connector 4 to form a second threaded section. A sealing ring 5 is provided between the second annular protrusion and the inner wall of the inner cylinder 2. A second nut 8 located outside the outer cylinder 1 is connected to the second threaded section, and the second nut 8 and the second annular protrusion clamp and fix the inner cylinder 2 and the outer cylinder 1 as a whole, so as to achieve a fixed and sealed connection between the water outlet pipe connector 4 and the third perforation through the second annular protrusion and the second nut 8. The structure is simple and the water outlet pipe connector 4 can be removed for cleaning when it is blocked.

[0044] In other embodiments, the outlet of the water pipe connector 4 can be located between the inner cylinder 2 and the outer cylinder 1, or the second nut 8 can be located between the inner cylinder 2 and the outer cylinder 1, and the second nut 8 and the second annular protrusion can clamp the inner cylinder 2.

[0045] In other embodiments, refer to Figure 1 The inlet pipe connector 7 and the outlet pipe connector 4 are also installed on the cover 3; similarly, refer to Figure 1 The water outlet pipe connector 4 and the water inlet pipe connector 7 can also be installed on the outer circumferential surfaces of the inner cylinder 2 and the outer cylinder 1.

[0046] The following is a detailed description of the placement of probe 11.

[0047] In one embodiment, the probe 11 is located at the bottom of the inner cylinder 2. Because the water at the bottom of the inner cylinder 2 is stagnant and has poor flow, scale easily forms on the probe 11, requiring frequent acid washing and resulting in a short service life. Furthermore, because the stagnant water does not circulate for extended periods, the data measured by the probe 11 is inaccurate. To overcome these problems, in a preferred embodiment, the outlet of the inlet pipe connector 7 is located at the bottom of the inner cylinder 2, the inlet of the outlet pipe connector 4 is located at the top of the inner cylinder 2, and the bottom of the probe 11 is positioned close to the inlet of the outlet pipe connector 4.

[0048] exist Figure 1In the embodiment shown, the distance between the outlet of the water inlet connector 7 and the bottom of the inner cylinder 2 is 50 mm, and the inlet of the water outlet connector 4 is 60 mm higher than the bottom of the probe 11.

[0049] In this embodiment, the water flows from bottom to top, and the bottom of the probe 11 is located near the inlet of the water outlet connector 4. Therefore, the water flow velocity at the probe 11 is relatively fast, which can effectively prevent scale buildup on the probe 11, thereby extending the service life of the probe 11 and ensuring the authenticity of the data measured by the probe 11.

[0050] Furthermore, in a preferred embodiment, the outlet of the inlet pipe connector 7 and the inlet of the outlet pipe connector 4 are located at two opposite corners of the inner cylinder 2, and the bottom of the probe 11 is located on the line connecting the outlet of the inlet pipe connector 7 and the inlet of the outlet pipe connector 4 (i.e., on the diagonal line connecting the outlet of the inlet pipe connector 7 and the inlet of the outlet pipe connector 4). At this time, the water flow velocity at the probe 11 is the maximum, which can extend the service life of the probe 11 to the greatest extent.

[0051] In other embodiments, the bottom of the probe 11 may also be located above or below the line connecting the outlet of the inlet pipe connector 7 and the inlet of the outlet pipe connector 4.

[0052] In a preferred embodiment, both the inlet pipe connector 7 and the outlet pipe connector 4 are straight pipe connectors, which facilitates cleaning.

[0053] In other embodiments, the inlet pipe connector 7 and / or the outlet pipe connector 4 may also be elbow connectors, which will not affect the normal connection of the pipes.

[0054] To facilitate the installation and cleaning of the probe 11, in a preferred embodiment, the water quality testing device for oil and gas fields further includes a fastening nut 9. The cover 3 has an installation groove with an internal thread on the inner wall of the installation groove. The fastening nut 9 has an external thread and is threaded onto the installation groove. A self-sealing gasket 10 is provided between the bottom surface of the fastening nut 9 and the bottom wall of the installation groove. The self-sealing gasket 10 has a self-sealing hole. Both the fastening nut 9 and the installation groove have through holes. The probe 11 passes through the self-sealing hole, the through hole on the fastening nut 9, and the through hole on the installation groove. The self-sealing gasket 10 is used to clamp and fix the probe 11.

[0055] When the probe 11 needs cleaning, it can be pulled upwards directly. At this time, the self-sealing hole automatically seals, preventing water from flowing from the inner cylinder 2 onto the ground. After cleaning the probe 11, it can be inserted downwards into the self-sealing hole, where the self-sealing gasket 10 secures it through friction. The self-sealing gasket 10 is made of materials commonly used in manufacturing sealing rings 5, such as rubber. The self-sealing gasket 10 is existing technology and can be purchased as a whole.

[0056] The essence of a self-sealing hole is that the self-sealing gasket 10 has an opening that is naturally closed without the action of external force. When an object passes through the opening, the corresponding part of the self-sealing gasket 10 is compressed, thereby achieving a seal between the object and the self-sealing gasket 10.

[0057] Self-sealing gaskets 10 are commonly used in the wiring of cables (wires) that require dust and water protection. When self-sealing gaskets 10 are installed on the cabinet, the cables (wires) pass through the self-sealing holes, thereby achieving isolation between the inside and outside of the cabinet and preventing external dust and rainwater from entering the cabinet.

[0058] Finally, it should be noted that the above are merely preferred embodiments of this utility model and are not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments without creative effort, or make equivalent substitutions for some technical features, or organically combine different specific implementation methods to create the specific implementation methods shown in the accompanying drawings. Of course, those skilled in the art can also create other specific implementation methods not shown in the accompanying drawings. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A water quality testing device for oil and gas fields, comprising a water quality analyzer and a container, characterized in that, It also includes an inlet pipe connector and an outlet pipe connector. The container includes a cover, an outer cylinder and an inner cylinder. The outer cylinder is connected to the cover with a flange. The upper end of the outer cylinder has a first flange. The cover has a corresponding second flange. The upper end of the inner cylinder has an outward folded edge, which is clamped between the first flange and the second flange. The inlet pipe connector and the outlet pipe connector are only connected to the inner cylinder. The probe of the water quality tester is installed on the cover, and the lower end of the probe is located inside the inner cylinder.

2. The water quality detecting apparatus for oil and gas fields according to claim 1, wherein The cover has a first perforation, through which the water inlet pipe connector passes and is fixedly and sealed to the cover.

3. The water quality testing apparatus for oil and gas fields according to claim 2, wherein The outer surface of the water inlet pipe connector is provided with a first annular protrusion. One section of the outer surface of the water inlet pipe connector is provided with threads to form a first threaded section. The first threaded section is located above the first annular protrusion. The first annular protrusion is located below the cover body. A sealing ring is provided between the first annular protrusion and the cover body. A first nut located above the cover body is connected to the first threaded section. The first nut and the first annular protrusion together clamp the cover body to achieve a fixed and sealed connection between the water inlet pipe connector and the cover body.

4. The water quality measuring device for oil and gas fields according to any one of claims 1 to 3, characterized by The outer cylinder has a second perforation on its outer circumferential surface, and the inner cylinder has a third perforation on its outer circumferential surface corresponding to the second perforation. The water outlet pipe connector passes through the second perforation and the third perforation, and the water outlet pipe connector is fixedly and sealed to the third perforation.

5. The water quality testing apparatus for oil and gas fields according to claim 4, wherein The outer surface of the water outlet pipe joint is provided with a second annular protrusion, and the outer surface of one section of the water outlet pipe joint is provided with threads to form a second threaded section. A sealing ring is provided between the second annular protrusion and the inner wall of the inner cylinder. A second nut located outside the outer cylinder is connected to the second threaded section to achieve a fixed and sealed connection between the water outlet pipe joint and the third perforation through the second annular protrusion and the second nut.

6. The water quality measuring device for oil and gas fields according to any one of claims 1 to 3, wherein The outlet of the inlet pipe connector is located at the bottom of the inner cylinder, the inlet of the outlet pipe connector is located at the top of the inner cylinder, and the bottom of the probe is arranged close to the inlet of the outlet pipe connector.

7. The water quality testing apparatus for oil and gas fields according to claim 6, wherein The water outlet of the inlet pipe connector and the water inlet of the outlet pipe connector are located at two opposite corners of the inner cylinder, and the bottom of the probe is located on the line connecting the water outlet of the inlet pipe connector and the water inlet of the outlet pipe connector.

8. The water quality measuring device for oil and gas fields according to any one of claims 1 to 3, wherein Both the inlet and outlet pipe joints are straight pipe joints.

9. The water quality testing device for oil and gas fields as described in any one of claims 1 to 3, characterized in that, The water quality testing device for oil and gas fields also includes a fastening nut, a mounting groove on the cover, an internal thread on the inner wall of the mounting groove, an external thread on the fastening nut, and the fastening nut being threaded onto the mounting groove. A self-sealing gasket is provided between the bottom surface of the fastening nut and the bottom wall of the mounting groove, and a self-sealing hole is provided on the self-sealing gasket. Both the fastening nut and the mounting groove have through holes, and the probe passes through the self-sealing hole, the through hole on the fastening nut, and the through hole on the mounting groove. The self-sealing gasket is used to clamp and fix the probe.

10. The water quality measuring device for oil and gas fields according to any one of claims 1 to 3, wherein The outer cylinder is made of stainless steel, and the inner cylinder is made of corrosion-resistant and biodegradable plastic.

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