CN218382382U - Portable imidazoline corrosion inhibitor residual concentration detection device - Google Patents

Abstract

The application discloses portable imidazoline corrosion inhibitor residual concentration's detection device belongs to chemical analysis technical field. A portable detection device for the residual concentration of an imidazoline corrosion inhibitor comprises a box body, an absorbance detection module, an iron ion detection module and a filtering module, wherein the top of the box body is provided with a first mounting opening and a second mounting opening; the filtering module is connected in the outside of box, and it includes sample connection, first inlet and first liquid outlet, and first liquid outlet is connected with iron ion detection module, and the liquid that draws from the sample connection is used for pouring into absorbance detection module. The detection device is small in size, light in weight, convenient to carry to a detection site for use, simple and convenient to operate, accurate in detection and free of special skill requirements on operators.

Description

Portable imidazoline corrosion inhibitor residual concentration detection device

Technical Field

The application relates to a portable imidazoline corrosion inhibitor residual concentration detection device, and belongs to the technical field of chemical analysis.

Background

Oil and gas pipes often face severe corrosion problems during oil and gas production. Among many corrosion protection measures, the corrosion inhibitor has the advantages of low cost, simple operation, no influence on the mechanical properties of metal materials, flexible use and the like, and is considered to be one of the most economical and effective methods for inhibiting the corrosion of carbon steel pipes. The use amount of imidazoline corrosion inhibitors is the largest among the corrosion inhibitors used in oil fields at home and abroad. However, as the service life of the corrosion inhibitor in the oil field environment is prolonged, the effective mass concentration of the corrosion inhibitor is reduced, and the corrosion prevention effect of the corrosion inhibitor is further influenced. Therefore, the residual concentration of the corrosion inhibitor in the water produced on the oilfield site needs to be detected so as to establish a more reasonable and effective dosing period and determine the most economical dosing amount, thereby ensuring the protection effect of the corrosion inhibitor.

For the detection of the residual concentration of the imidazoline corrosion inhibitor in the water produced in the oilfield field, the water sample is usually taken back to a laboratory for detection and analysis, so that the detection efficiency is greatly reduced, and the cost of human resources is increased. In addition, the above operation also puts higher requirements on the conditions of laboratory instruments and equipment and the technical ability of detection personnel, and the like, namely, a special laboratory and a professional detection personnel are required to be matched. At present, the market is still blank in the aspect of producing imidazoline corrosion inhibitor residual concentration detection devices for oilfield sites. In order to meet the requirements of rapid, simple and accurate detection of the residual concentration of the corrosion inhibitor in the produced water on the oilfield site, a device for detecting the residual concentration of the imidazoline corrosion inhibitor used on the oilfield site needs to be developed urgently.

SUMMERY OF THE UTILITY MODEL

In order to solve the problems, the application provides a portable imidazoline corrosion inhibitor residual concentration detection device which is small in size, light in weight, convenient to carry to a detection field, simple and convenient to operate, accurate in detection and free of special skill requirements on operators.

The utility model adopts the following technical scheme:

a portable detection device for the residual concentration of an imidazoline corrosion inhibitor comprises a box body, an absorbance detection module, an iron ion detection module and a filtering module, wherein the top of the box body is provided with a first mounting opening and a second mounting opening;

the filter module is connected the outside of box, it includes sample connection, first inlet and first liquid outlet, first liquid outlet with iron ion detection module is connected, follows the liquid that the sample connection drawed is used for pouring into absorbance detection module.

Optionally, a second liquid inlet and a second liquid outlet are arranged on the outer side of the box body, and the second liquid inlet is communicated with the first liquid inlet.

Optionally, the iron ion detection module includes iron ion detection electrode, stock solution storehouse, third liquid inlet and third liquid outlet, the stock solution storehouse cover is established the afterbody of iron ion detection electrode, the third liquid inlet is connected the outside in stock solution storehouse, the third liquid outlet is connected the lower extreme in stock solution storehouse.

Optionally, the third liquid inlet is communicated with the first liquid outlet, and the third liquid outlet is communicated with the second liquid outlet.

Optionally, the absorbance detection module is ultraviolet visible spectrophotometer, ultraviolet visible spectrophotometer is including detecting storehouse, liquid container and apron, liquid container sets up in the detection storehouse, the apron lid is established the top in detection storehouse.

Optionally, the filtration module still includes the filtration storehouse, be provided with filtration membrane in the filtration storehouse, first inlet and first liquid outlet set up respectively filter the upper and lower both ends in storehouse.

Optionally, the lower extreme of crossing the filter bin is provided with the three-way valve, the one end of three-way valve with first liquid outlet links to each other, the other end with the sample connection links to each other.

Optionally, the lower end of the box body is provided with a support leg.

Optionally, the box body is provided with carrying holes on two sides.

Optionally, one side of the second liquid inlet is provided with a liquid inlet control valve, one side of the second liquid outlet is provided with a liquid outlet control valve, and one side of the sampling port is provided with a sampling control valve.

Benefits that can be produced by the present application include, but are not limited to:

the portable imidazoline corrosion inhibitor residual concentration detection device is high in integration level, and the absorbance detection module is in an overhead type, so that sample loading and sampling are facilitated; the iron ion detection module is inserted, so that daily cleaning and maintenance of the iron ion detection electrode are facilitated; the filtering module is externally arranged, so that the filtering membrane is convenient to clean and replace; the sampling port is used for extracting the filtered water sample, and is favorable for absorbance detection; through the arrangement of the second liquid inlet and the second liquid outlet, liquid can be conveniently fed into the box body, and liquid in the box body can be discharged conveniently; the first liquid outlet and the third liquid inlet are communicated, so that a filtered sample can enter the liquid storage bin; the box body is protected by arranging the support legs, and meanwhile, the detection accuracy is ensured; the box body is convenient to carry due to the arrangement of the carrying holes; the device satisfies lightweight and portable's user demand, and easy and simple to handle simultaneously, detection is accurate, has solved the inconvenient problem of imidazoline corrosion inhibitor residual concentration detection in the on-the-spot aquatic of extracting of oil field.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural diagram of a portable imidazoline corrosion inhibitor residual concentration detection device according to an embodiment of the present application;

fig. 2 is a schematic structural diagram of a ferric ion detection module according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an absorbance detection module according to an embodiment of the present application;

FIG. 4 is a schematic structural diagram of a filter module according to an embodiment of the present disclosure;

list of parts and reference numerals:

1. the box, 2, absorbance detection module, 3, iron ion detection module, 4, first installing port, 5, the second installing port, 6, the sample connection, 7, first inlet, 8, first liquid outlet, 9, the second inlet, 10, the second liquid outlet, 11, advance the liquid control valve, 12, go out the liquid control valve, 13, the stabilizer blade, 14, the transport hole, 15, iron ion detection electrode, 16, the stock solution storehouse, 17, the third advances the liquid connection, 18, the third liquid outlet, 19, detect the storehouse, 20, the liquid container, 21, the apron, 22, the sample control valve, 23, filter the storehouse, 24, filtration membrane, 25, the three-way valve.

Detailed Description

In order to more clearly explain the overall concept of the present application, the following detailed description is given by way of example in conjunction with the accompanying drawings.

In order that the above objects, features and advantages of the present application can be more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and detailed description. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, however, the present application may be practiced in other ways than those described herein, and therefore the scope of the present application is not limited by the specific embodiments disclosed below.

In addition, in the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on those shown in the drawings, are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; the connection can be mechanical connection, electrical connection or communication; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, a first feature is "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediary. In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The utility model discloses a detection apparatus for portable imidazoline corrosion inhibitor residual concentration, the integrated level is high, portable to the oil field scene to imidazoline corrosion inhibitor residual concentration detects in the extraction water, and easy and simple to handle, detection are accurate, follow and carry out the detailed description to the detection apparatus's of this application portable imidazoline corrosion inhibitor residual concentration's structure and application method with reference to the attached drawing.

Referring to fig. 1-4, an embodiment of the application provides a portable detection device for the residual concentration of an imidazoline corrosion inhibitor, which includes a box body 1, an absorbance detection module 2, an iron ion detection module 3 and a filtering module, wherein the top of the box body 1 is provided with a first mounting port 4 and a second mounting port 5, the absorbance detection module 2 is mounted at the first mounting port 4 for facilitating sample loading and sampling, and the iron ion detection module 3 is mounted at the second mounting port 5 for facilitating daily cleaning and maintenance of an iron ion detection electrode 15; the filtration module is connected in the outside of box 1, is convenient for wash and change filtration membrane 24, and it includes sample connection 6, first inlet 7 and first liquid outlet 8, and first liquid outlet 8 is connected with iron ion detection module 3 for the sample after the filtration can get into stock solution storehouse 16, and the liquid that draws from sample connection 6 is used for pouring into absorbance detection module 2 into, is favorable to detecting the absorbance of sample. So set up for the device is convenient for be carried to the inspection field and uses, satisfies lightweight and portable's user demand.

It can be understood that the second liquid inlet 9 and the second liquid outlet 10 are arranged on the outer side of the box body 1, and the second liquid inlet 9 is communicated with the first liquid inlet 7, which is beneficial to introducing an imidazoline corrosion inhibitor sample collected on site into the filter bin 23.

Specifically, a liquid inlet control valve 11 is arranged on one side of the second liquid inlet 9, and a liquid outlet control valve 12 is arranged on one side of the second liquid outlet 10, so that liquid can be conveniently controlled to enter or leave the box body 1; the specific types of the liquid inlet control valve 11 and the liquid outlet control valve 12 are not limited in the present application, as long as the liquid inlet amount of the second liquid inlet 9 and the liquid outlet amount of the second liquid outlet 10 can be controlled; in order to accurately control the flow rate of the liquid, needle valves are used as the liquid inlet control valve 11 and the liquid outlet control valve 12 in this application.

As an embodiment, the lower end of the box body 1 is provided with a support leg 13, so that the box body 1 is protected, and meanwhile, the detection accuracy is ensured; specifically, 13 evenly distributed of stabilizer blade guarantee that box 1 can stabilize and place in 1 lower extreme four corners department of box.

As an embodiment, the two sides of the box body 1 are provided with carrying holes 14, so that the box body 1 can be conveniently carried; the transfer holes 14 are formed in a square shape to facilitate the application of force during transfer.

As an embodiment, referring to fig. 2, the iron ion detection module 3 includes an iron ion detection electrode 15, a liquid storage bin 16, a third liquid inlet 17 and a third liquid outlet 18, wherein the liquid storage bin 16 is sleeved at the tail of the iron ion detection electrode 15, so as to facilitate detection of the iron ion concentration of a sample in the liquid storage bin 16; the third liquid inlet 17 is connected to the outer side of the liquid storage bin 16 and communicated with the first liquid outlet 8, so that the filtered sample can be conveyed to the liquid storage bin 16; the third liquid outlet 18 is connected to the lower end of the liquid storage bin 16 and communicated with the second liquid outlet 10, which is beneficial to discharging the liquid in the liquid storage bin 16 away from the box body 1.

As an embodiment, referring to fig. 3, the absorbance detection module 2 is an ultraviolet-visible spectrophotometer, which includes a detection chamber 19, a liquid container 20 and a cover plate 21, wherein the liquid container 20 is disposed in the detection chamber 19 for detecting the absorbance of a sample in the liquid container 20; the cover plate 21 covers the top of the detection bin 19, so that dust can be prevented from falling into the detection bin 19, the cleaning difficulty of the detection bin 19 is reduced, the interference of the external environment on the detection process can be avoided, and the detection accuracy is improved.

As can be understood, the liquid extracted from the sampling port 6 is used for injecting into the liquid container 20 so as to detect the absorbance of the filtered imidazoline corrosion inhibitor sample; a sampling control valve 22 is arranged on one side of the sampling port 6 and used for controlling the liquid output amount of the sampling port 6; preferably, the sampling control valve 22 is a needle valve.

As an embodiment, referring to fig. 4, the filtering module further includes a filtering bin 23, and a filtering membrane 24 is disposed in the filtering bin 23, so as to facilitate filtering of the imidazoline corrosion inhibitor sample collected on site, so as to remove interfering substances affecting absorbance measurement therein, and improve detection accuracy; preferably, the pore size of the filtration membrane 24 is in the range of 20 to 100 μm; first inlet 7 and first liquid outlet 8 set up the upper and lower both ends at filtering storehouse 23 respectively, are convenient for to filter the interior feed liquor of storehouse 23 and will filter the interior liquid discharge of storehouse 23.

It can be understood that the lower end of the filtering bin 23 is provided with a three-way valve 25, one end of the three-way valve 25 is connected with the first liquid outlet 8, and the other end is connected with the sampling port 6, so as to respectively convey the filtered sample to the liquid storage bin 16 and the injection liquid container 20.

A portable imidazoline corrosion inhibitor residual concentration detection device is used, firstly, imidazoline corrosion inhibitor samples are led into a filtering bin 23 through a second liquid inlet 9 and a first liquid inlet 7, a part of the filtered imidazoline corrosion inhibitor samples enter a liquid storage bin 16 through a first liquid outlet 8 and a third liquid inlet 17, iron ion concentration is detected through an iron ion detection electrode 15, the other part of the filtered imidazoline corrosion inhibitor samples flow out through a sampling port 6 and are injected into a liquid container 20, a cover plate 21 is covered, absorbance is detected, after detection is completed, liquid in the liquid storage bin 16 is discharged out of a box body 1 through a third liquid outlet 18 and a second liquid outlet 10, and then imidazoline corrosion inhibitor residual concentration can be calculated according to the measured iron ion concentration and the measured absorbance.

The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, as for the system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for relevant points.

The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement or the like made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims (10)

1. The device for detecting the residual concentration of the portable imidazoline corrosion inhibitor is characterized by comprising a box body, an absorbance detection module, an iron ion detection module and a filtering module, wherein the top of the box body is provided with a first mounting opening and a second mounting opening;

the filter module is connected the outside of box, and it includes sample connection, first inlet and first liquid outlet, first liquid outlet with iron ion detection module is connected, follows the liquid that the sample connection drawed is used for pouring into absorbance detection module.

2. The portable imidazoline corrosion inhibitor residual concentration detection device as claimed in claim 1, wherein a second liquid inlet and a second liquid outlet are arranged outside the box body, and the second liquid inlet is communicated with the first liquid inlet.

3. The apparatus for detecting the residual concentration of the portable imidazoline corrosion inhibitor according to claim 2, wherein the iron ion detection module comprises an iron ion detection electrode, a liquid storage bin, a third liquid inlet and a third liquid outlet, the liquid storage bin is sleeved at a tail portion of the iron ion detection electrode, the third liquid inlet is connected to an outer side of the liquid storage bin, and the third liquid outlet is connected to a lower end of the liquid storage bin.

4. The apparatus as claimed in claim 3, wherein the third liquid inlet is in communication with the first liquid outlet, and the third liquid outlet is in communication with the second liquid outlet.

5. The portable imidazoline corrosion inhibitor residual concentration detection device according to claim 1, wherein the absorbance detection module is an ultraviolet-visible spectrophotometer, the ultraviolet-visible spectrophotometer comprises a detection bin, a liquid container and a cover plate, the liquid container is arranged in the detection bin, and the cover plate is covered on the top of the detection bin.

6. The portable imidazoline corrosion inhibitor residual concentration detection device according to claim 1, wherein the filtering module further comprises a filtering bin, a filtering membrane is disposed in the filtering bin, and the first liquid inlet and the first liquid outlet are respectively disposed at upper and lower ends of the filtering bin.

7. The apparatus for detecting the residual concentration of the portable imidazoline corrosion inhibitor according to claim 6, wherein a three-way valve is disposed at a lower end of the filter bin, one end of the three-way valve is connected to the first liquid outlet, and the other end of the three-way valve is connected to the sampling port.

8. The portable imidazoline corrosion inhibitor residual concentration detection device according to claim 1, wherein a support leg is disposed at a lower end of the box body.

9. The portable imidazoline corrosion inhibitor residual concentration detection device according to claim 1, wherein two sides of the box body are provided with carrying holes.

10. The apparatus for detecting the residual concentration of the portable imidazoline corrosion inhibitor according to claim 2, wherein a liquid inlet control valve is disposed at one side of the second liquid inlet, a liquid outlet control valve is disposed at one side of the second liquid outlet, and a sampling control valve is disposed at one side of the sampling port.

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