Device for detecting slow release performance of tracing band

Abstract

The invention provides a device for detecting the slow release performance of a tracing band, the device comprises an outer tube, an inner tube arranged in the outer tube and a lower bottom arranged at the bottoms of the outer tube and the inner tube, a gap is formed between the inner tube and the outer tube to form an interlayer, the interlayer is used for accommodating the tracing band, and the tracing band is arranged in the interlayer. The outer pipe or / and the inner pipe is connected or provided with a connecting port for communicating the outer pipe or / and the inner pipe with an external pipeline, and the pipe wall of the inner pipe is provided with a through hole for communicating the interlayer with the interior of the inner pipe.

Description

Technical Field

[0001] The present application belongs to the technical field of detection devices, and specifically relates to a detection device for the sustained-release performance of a tracer band. Background Art

[0002] Fluorescent microspheres, as a new generation of tracers, are widely used in biomarkers, disease diagnostics, tracers, solid-phase microarrays, liquid-phase microarrays, immunochromatography, Raman scattering, and water / oil / gas tracing. They offer a wide range of codes, currently exceeding 100. In water / oil / gas tracing applications, fluorescent microsphere tracers offer significant advantages over traditional oil and gas field tracers in terms of code count. By mixing fluorescent microspheres with sustained-release materials and resins and then curing them, long-lasting sustained-release effects can be achieved.

[0003] Sustained-release fluorescent microsphere tracers can be divided into granular sustained-release tracers and tracer tapes due to their different forms. Granular sustained-release tracers are made by mixing fluorescent microspheres, sustained-release materials, and resins and then directly granulating or coating them on the surface of sand grains such as quartz sand. Tracer tapes are made by mixing fluorescent microspheres, sustained-release materials, and resins and then coating them on a carrier such as a metal mesh to form sheets, blocks, or rolls, and are flexible. In water-finding applications, the tracer tape needs to be fixed to a water-finding nipple. Specifically, the tracer tape is first fixed to a cylindrical pipe, and then a screen is put on it, which has many through holes. Multiple water-finding nipples (with multiple colors, i.e., multiple codes) are installed in the water-finding tool for use. When the tracer tape encounters water / oil / gas, the tracer tape of the corresponding phase (such as water phase / oil phase / gas phase) will slowly release fluorescent microspheres. The fluorescent microspheres in the sample are detected by sampling and decoding and analysis.

[0004] However, there is currently no unified national or industry standard for testing the sustained-release performance of tracer tapes. The sustained-release effect claimed by tracer tape products differs greatly from that in actual applications, which affects the application analysis of tracers and is not conducive to the detection and exploitation of oil and gas fields.

[0005] In view of this, the present application provides a device for detecting the sustained-release performance of a tracer tape to improve the accuracy of the sustained-release performance evaluation of the tracer tape. Summary of the Invention

[0006] The purpose of this application is to provide a device for detecting the sustained-release performance of a tracer tape, so as to improve the accuracy of the evaluation of the sustained-release performance of the tracer tape.

[0007] The present application provides a detection device for the sustained-release performance of a tracer band, the detection device comprising: an outer tube 1, an inner tube 2 arranged inside the outer tube 1, and a lower bottom 3 arranged at the bottom of the outer tube 1 and the inner tube 2, a gap being formed between the inner tube 2 and the outer tube 1 to form an interlayer 4, the interlayer 4 being used to accommodate a tracer band 5, the outer tube 1 and / or the inner tube 2 being connected or provided with a connection port 6 connecting the outer tube 1 and / or the inner tube 2 with an external pipeline, and the tube wall of the inner tube 2 being provided with a through hole 21 connecting the interlayer 4 with the interior of the inner tube 2.

[0008] In some embodiments, the outer tube 1 is sleeved outside the inner tube 2 along the axial direction of the inner tube 2, and the distance between the outer tube 1 and the inner tube 2 is greater than or equal to the thickness of the tracer tape 5. Preferably, the distance between the outer tube 1 and the inner tube 2 is greater than the thickness of the tracer tape 5.

[0009] Furthermore, the tracer tape 5 can be detachably fixed on the outer wall of the inner tube 2 , and one or more tracer tapes 5 can be fixed on the outer wall of the inner tube 2 .

[0010] Furthermore, the detection device also includes: a tracer band fixing part, which is used to fix the tracer band. The tracer band fixing part includes: a gasket and a fixing strip, the tracer band 5 is attached to the outer wall of the inner tube 2, the gasket is attached to the outer surface of the tracer band 5, and the fixing strip is used to fix the tracer band 5 and the gasket to the inner tube 2. The tracer band fixing part includes: two axially sleeved perforated circular tubes, the two perforated circular tubes are arranged in the interlayer 4, and are spaced apart from the outer tube 1 and the inner tube 2, and the interlayer space between the two perforated circular tubes is formed by perfusion to form a tracer band.

[0011] Furthermore, one or more gaskets are provided, and a plurality of through holes are provided on the gaskets.

[0012] In some embodiments, the outer tube 1 is fixedly connected to the lower base 3 , and the inner tube 2 is connected to the lower base 3 .

[0013] Furthermore, the lower end of the outer tube 1 is integrally formed and fixed to the lower base 3 , or the lower end of the outer tube 1 is detachably connected and fixed to the lower base 3 (such as by threads, etc.).

[0014] Furthermore, a circular groove is provided at the position of the lower base 3 relative to the inner tube 2, and the lower end of the inner tube 2 is embedded in the groove.

[0015] Furthermore, a sealing ring is provided in the groove.

[0016] In some embodiments, the lower base 3 further has a support column 31, and the support column 31 allows the lower base 3 to have a certain height with the table top or the ground.

[0017] In some embodiments, the detection device further comprises: an upper cover 7 , the upper end of the outer tube 1 is detachably connected and fixed to the upper cover 7 , and the inner tube 2 is connected to the upper cover 7 .

[0018] Furthermore, a circular groove is provided at the position of the upper cover 7 relative to the inner tube 2, and the upper end of the inner tube 2 is embedded in the groove. A sealing ring is also provided in the groove to play a sealing role.

[0019] In some embodiments, the through holes 21 are used for liquid or gas to flow between the interlayer 5 and the interior of the inner tube 2 through the through holes 21 .

[0020] Furthermore, there are one or more through holes 21. Preferably, there are more than one through holes 21.

[0021] Furthermore, the through hole 21 is an inclined hole, and the through hole 21 is an inclined hole inclined upward or / and downward.

[0022] In some embodiments, the tube wall of the outer tube 1 is provided with a connection port connecting the outer tube 1 with an external pipeline, and the tube wall of the inner tube 2, or / and the middle of the upper cover 7, or / and the middle of the lower bottom 3 are provided with a connection port connecting to the external pipeline, one of the connection ports is used for liquid / gas inlet and the other is used for liquid / gas outlet; or the tube wall of the outer tube 1 is provided with at least two connection ports connecting to the external pipeline; or the tube wall of the inner tube 2, or / and the middle of the upper cover 7, or / and the middle of the lower bottom 3 are provided with at least two connection ports connecting to the external pipeline.

[0023] In some embodiments, the detection device further includes: a valve 8, which is fixedly connected to the connecting port 6, and the valve 8 is used to control whether the liquid or gas flows and the flow rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Combined with the following Figure 1 When read together with the accompanying drawings, the above and other features of the present application will be more fully described. It should be understood that these drawings only depict several embodiments of the present application and should not be considered to limit the scope of the present application. The present application will be more clearly and detailed through the use of the accompanying drawings.

[0025] Figure 1 This is a schematic structural diagram of a device for detecting the sustained-release performance of a tracer band according to the present application.

[0026] Figure 2 For this application Figure 1 Exploded view of the detection device without the tracer tape.

[0027] Figure 3 This is a schematic structural diagram of another device for detecting the sustained-release performance of a tracer band according to the present application.

[0028] Description of main component symbols:

[0029] Outer tube 1, inner tube 2, through hole 21, lower base 3, support column 31, interlayer 4, tracer tape 5, connecting port 6, upper cover 7, valve 8. DETAILED DESCRIPTION

[0030] The following examples are described to assist in understanding the present application, and the examples are not and should not be interpreted in any way as limiting the scope of protection of the present application.

[0031] If not otherwise defined, all terms (including technical and scientific terms) in this specification may be defined as commonly understood by those skilled in the art to which the present disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the present disclosure and the relevant art, and will be interpreted in a non-idealized or overly formal sense unless clearly defined as such herein.

[0032] As used herein, the term "at least one" when preceding or following a list of elements modifies the entire list of elements without modifying the individual elements of the list and will not be interpreted as limiting "one". "Or" means "and / or". The terms "include" and "comprise", when used in this specification, indicate the presence of the stated features, regions, wholes, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, regions, wholes, steps, operations, elements, components, and / or their collections. Therefore, the above wording will be understood to mean including the stated elements, but not excluding any other elements. The term "and / or" includes any and all combinations of one or more of the associated listed items. The term "plurality" refers to two or more. The term "connected" refers to direct or indirect connection. It will be understood that when an element, such as a layer, film, region, or substrate, is referred to as being "on" another element, it may be directly on the other element or there may be intermediate elements. Conversely, when an element is referred to as being "directly on" another element, there are no intermediate elements. To clearly illustrate the embodiments in the figures, some parts that are not actually relevant to the description may be omitted. The terms "first," "second," "third," etc. may be used herein to describe and distinguish various elements, components, regions, layers, and / or parts, but these elements, components, regions, layers, and / or parts should not be limited by these terms.

[0033] The present application provides a device for detecting the sustained-release performance of a tracer tape, the device comprising: an outer tube 1, an inner tube 2 arranged inside the outer tube 1, and a lower bottom 3 arranged at the bottom of the outer tube 1 and the inner tube 2, the inner tube 2 and the outer tube 1 having a spacing therebetween to form an interlayer 4, the interlayer 4 being used to accommodate a tracer tape 5, the outer tube 1 or / and the inner tube 2 being connected or provided with a connection port 6 connecting the outer tube 1 or / and the inner tube 2 with an external pipeline, the tube wall of the inner tube 2 being provided with a through hole 21 connecting the interlayer 4 with the inside of the inner tube 2. The connection port 6 is used for the entry and exit of water / oil / gas fluids, while the through hole 21 enables the circulation of fluids between the inner tube 2 and the interlayer 4, and enables the continuous flow of water / oil / gas on the tracer tape 5, thereby simulating the use state of the tracer tape in application environments such as groundwater, oil fields, and natural gas, and being able to more accurately detect the sustained-release performance of the tracer tape. The water / oil / gas fluids can also be high-temperature, simulating the high-temperature environment underground. At the same time, the sealed detection device can be placed vertically or horizontally. When placed horizontally, it is more conducive to using a constant temperature device such as a water bath to maintain a constant high-temperature detection environment for the fluid.

[0034] In some embodiments, the outer tube 1 is sleeved outside the inner tube 2 along the axial direction of the inner tube 2, and the spacing between the outer tube 1 and the inner tube 2 is greater than or equal to the thickness of the tracer tape 5. Preferably, the outer tube 1 and the inner tube 2 are sleeved in parallel along the axial direction, although slightly non-parallel spacing is also within the scope of protection of this application. Preferably, the spacing between the outer tube 1 and the inner tube 2 is greater than the thickness of the tracer tape 5 to facilitate installation of the tracer tape and improve fluid circulation.

[0035] This device is suitable for testing the sustained-release properties of water-phase tracer tapes, oil-phase tracer tapes, and gas-phase tracer tapes. The water-phase tracer tape slowly releases hydrophilic fluorescent microspheres in water, the oil-phase tracer tape slowly releases lipophilic fluorescent microspheres in petroleum, and the gas-phase tracer tape slowly releases gas-phase fluorescent microspheres in gas. Therefore, the tracer tape 5 needs to be detachably fixed to the outer wall of the inner tube 2. A single device can test the sustained-release properties of water / oil / gas-phase tracer tapes, and the detachable fixation facilitates testing of various different tracer tapes. Depending on demand, one or more tracer tapes 5 can be fixed to the outer wall of the inner tube 2.

[0036] The tracer tape is set in the interlayer 4, and the tracer tape fixing part is used to fix the tracer tape. The tracer tape can be fixed in a detachable manner. As one of the most common detachable fixing methods, for example, the tracer tape fixing part includes: a gasket and a fixing strip. The tracer tape 5 is attached to the outer wall of the inner tube 2, and the gasket is attached to the outer surface of the tracer tape 5. The fixing strip is used to fix the tracer tape 5 and the gasket to the inner tube 2. There are one or more gaskets, and the gasket is provided with multiple through holes, preferably multiple, and the multiple through holes do not hinder the slow release of the tracer tape. In actual application, the tracer tape is fixed in the water-finding short section in a detachable manner. Of course, other detachable fixing methods are also within the scope of protection of this application. The tracer tape can also be fixed in a non-detachable manner. For example, the tracer tape fixing part includes: two axially sleeved perforated circular tubes, the two perforated circular tubes are set in the interlayer 4, and have a spacing with the outer tube 1 and the inner tube 2. The interlayer space between the two perforated circular tubes is formed by perfusion to form the tracer tape. In practical applications, the perforated round tube filled with tracer tape can be directly placed into the water-finding nipple.

[0037] In some embodiments, the outer tube 1 is fixedly connected to the lower base 3 , and the inner tube 2 is connected to the lower base 3 .

[0038] The outer tube 1 must be connected and fixed to the lower base 3, otherwise the fluid will leak. The lower end of the outer tube 1 can be fixed to the lower base 3 as a whole, or the lower end of the outer tube 1 can be detachably connected and fixed to the lower base 3 (such as by threads, etc.).

[0039] The inner tube 2 does not need to be fixed to the lower base 3. The lower base 3 only needs to ensure that the inner tube 2 does not shake during use and maintains a tight seal. For example, the lower base 3 can be provided with an annular groove relative to the inner tube 2, into which the lower end of the inner tube 2 fits. A sealing ring is also provided within the groove to provide a seal. The lower base 3 and the annular groove can also be provided with threads to removably connect the lower base 3 to the inner tube 2, thereby enhancing the tightness.

[0040] The lower base 3 can be a flat plate or a cover, but in order to facilitate the connection of the lower base 3 to the external pipe, the lower base 3 also has a support column 31, and the support column 31 makes the lower base 3 have a certain height with the desktop or the ground.

[0041] When the fluid is water or oil, the upper cover 7 is not necessary. However, when the fluid is gas, maintaining a tight seal is essential, and the upper cover 7 is essential. The detection device also includes an upper cover 7, to which the upper end of the outer tube 1 is detachably fixed, and the inner tube 2 is connected. The upper cover 7 is provided with an annular groove relative to the inner tube 2, into which the upper end of the inner tube 2 fits. A sealing ring is also provided within the groove to provide a seal.

[0042] In some embodiments, the through hole 21 is used for liquid or gas to circulate between the interlayer 5 and the inner tube 2 through the through hole 21. There are one or more through holes 21. Preferably, there are multiple through holes 21. From the perspective of the fluid flow path, the provision of the through hole 21 ensures the flow of fluid between the inner tube 2 and the interlayer 5, that is, it ensures that there is a continuous flow of fluid on the tracer tape. As for whether the connection ports 6 are all connected / connected to the inner tube 2, or whether the connection ports 6 are all connected or connected to the outer tube 1, it can ensure that there is a continuous flow of fluid on the tracer tape; it is just that when one connection port 6 (such as an inlet) is connected / connected to the outer tube 1, and one connection port 6 (such as an outlet) is connected / connected to the inner tube 2, under the condition of the same fluid flow rate, the fluid will flush the tracer tape more violently. In actual detection, both of these fluid flow modes need to be tested. Preferably, the through hole 21 is an inclined hole, and the through hole 21 is an inclined hole inclined upward or / and downward. The through holes 21 are arranged as inclined holes so that fluid can enter or be discharged more smoothly along the hole channel, thereby preventing stagnation and accumulation of water on the horizontal surface. Furthermore, the upward inclined holes and the downward inclined holes are alternately arranged.

[0043] In detail, there are many ways to design the connection ports for the two fluid flow paths mentioned above. The wall of the outer tube 1 is provided with a connection port connecting the outer tube 1 with the external pipeline, and the wall of the inner tube 2, or / and the middle of the upper cover 7, or / and the middle of the lower bottom 3 are provided with a connection port connecting to the external pipeline, one of which is used for liquid / gas inlet and the other for liquid / gas outlet; or the wall of the outer tube 1 is provided with at least two connection ports connecting to the external pipeline; or the wall of the inner tube 2, or / and the middle of the upper cover 7, or / and the middle of the lower bottom 3 are provided with at least two connection ports connecting to the external pipeline. The detection device also includes: a valve 8, which is fixedly connected to the connection port 6, and the valve 8 is used to control whether the liquid or gas flows and the flow rate.

[0044] like Figure 1-Figure 2As shown, a device for detecting the sustained-release performance of a tracer band comprises: an outer tube 1, an inner tube 2 arranged parallel to the axis of the outer tube 1 and inside the outer tube 1, the lower end of the outer tube 1 being fixed to the lower base 3 by a threaded connection, the lower base 3 being provided with a circular groove relative to the position of the inner tube 2, a sealing ring being provided in the groove, and the lower end of the inner tube 2 being embedded in the groove. The lower base 3 also has four support columns 31, and the support columns 31 ensure that the lower base 3 has a certain height relative to the table or the ground. The upper end of the outer tube 1 is fixed to the upper cover 7 by a threaded connection, the upper cover 7 being provided with a circular groove relative to the position of the inner tube 2, a sealing ring being provided in the groove, and the upper end of the inner tube 2 being embedded in the groove. There is a gap between the inner tube 2 and the outer tube 1 to form an interlayer 4, and the interlayer 4 is used to accommodate the tracer tape 5. The gap between the outer tube 1 and the inner tube 2 is greater than the thickness of the tracer tape 5. Two tracer tapes 5 are detachably fixed to the inner tube 2 through tracer tape fixing parts. The tracer tape 5 is attached to the outer wall of the inner tube 2, and a gasket is attached to the outer surface of the tracer tape 5. The gasket is provided with multiple through holes, and the fixing strip fixes the tracer tape 5 and the gasket to the inner tube 2. The tube wall of the inner tube 2 is provided with through holes 21 connecting the interlayer 4 with the interior of the inner tube 2. The through holes 21 are distributed in 4 rows throughout the axial range of the inner tube 2. The through holes 21 are inclined holes, and the through holes 21 inclined upward and the through holes 21 inclined downward are alternately arranged. A connecting port 6 is provided in the middle of the upper cover 7 and the middle of the lower base 3, respectively, and a valve 8 is provided on each connecting port 6.

[0045] The water / oil / gas fluid enters the interior of the inner tube 2 through the connection port in the middle of the upper cover 7, enters the interlayer 4 through the through hole 21, and flows into the interior of the inner tube 2 through the through hole 21, and is then discharged through the connection port set in the middle of the lower bottom 3, thereby realizing the continuous flow of water / oil / gas on the tracer tape 5.

[0046] like Figure 3As shown, a device for detecting the sustained-release performance of a tracer band comprises: an outer tube 1, an inner tube 2 arranged parallel to the axis of the outer tube 1 and inside the outer tube 1, the lower end of the outer tube 1 being fixedly connected to the lower base 3 by a threaded connection, the lower base 3 being provided with a circular groove relative to the position of the inner tube 2, a sealing ring being provided in the groove, and the lower end of the inner tube 2 being embedded in the groove. The lower base 3 also has four support columns 31, and the support columns 31 ensure that the lower base 3 has a certain height relative to the table or the ground. The upper end of the outer tube 1 is fixedly connected to the upper cover 7 by a threaded connection, the upper cover 7 being provided with a circular groove relative to the position of the inner tube 2, a sealing ring being provided in the groove, and the upper end of the inner tube 2 being embedded in the groove. There is a gap between the inner tube 2 and the outer tube 1 to form an interlayer 4, and the interlayer 4 is used to accommodate the tracer band. The gap between the outer tube 1 and the inner tube 2 is greater than the thickness of the tracer band. When fixing the tracer tape, the tracer tape is attached to the outer wall of the inner tube 2, and the gasket is attached to the outer surface of the tracer tape. The gasket is provided with multiple through holes, and the fixing strip fixes the tracer tape and the gasket to the inner tube 2. The tube wall of the inner tube 2 is provided with through holes 21 connecting the interlayer 4 with the interior of the inner tube 2. The through holes 21 are distributed in two rows in the entire axial range of the inner tube 2, and the through holes 21 are inclined holes. A connecting port 6 is provided in the middle of the upper cover 7, the middle of the lower bottom 3, the middle and upper part of the tube wall of the outer tube 1, and the middle and lower part of the tube wall of the outer tube 1, respectively, and a valve 8 is provided on each connecting port 6.

[0047] When the valves provided at the corresponding connection ports in the middle upper portion of the outer tube 1 wall and the middle portion of the lower base 3 are opened, the water / oil / gas fluid enters the interlayer 4 through the connection port in the middle upper portion of the outer tube 1 wall, enters the interior of the inner tube 2 through the through hole 21, and then is discharged through the connection port provided in the middle portion of the lower base 3, thereby achieving continuous flow of the water / oil / gas on the tracer tape 5. When the valves provided at the corresponding connection ports in the middle portion of the upper cover 7 and the middle lower portion of the outer tube 1 wall are opened, the water / oil / gas fluid enters the interior of the inner tube 2 through the connection port in the middle portion of the upper cover 7, enters the interlayer 4 through the through hole 21, and then is discharged through the connection port provided in the middle lower portion of the outer tube 1 wall, thereby achieving continuous flow of the water / oil / gas on the tracer tape 5. Similarly, the valves provided at the corresponding connection ports in the middle portion of the upper cover 7 and the middle portion of the lower base 3 can be opened simultaneously, or the valves provided at the corresponding connection ports in the middle upper portion of the outer tube 1 wall and the middle lower portion of the outer tube 1 wall can be opened simultaneously.

[0048] Although this application has disclosed various aspects and embodiments, other aspects and embodiments will be readily apparent to those skilled in the art. Variations and modifications may be made without departing from the spirit of this application, and all such variations and modifications are within the scope of this application. The various aspects and embodiments disclosed in this application are provided for illustrative purposes only and are not intended to limit this application. The actual scope of this application is determined by the claims.

Claims

1. A device for detecting the sustained-release performance of a tracer band, characterized in that: The detection device comprises: an outer tube (1), an inner tube (2) arranged inside the outer tube (1), and a lower bottom (3) arranged at the bottom of the outer tube (1) and the inner tube (2); a gap is formed between the inner tube (2) and the outer tube (1) to form an interlayer (4); the interlayer (4) is used to accommodate a tracer tape (5); the outer tube (1) or / and the inner tube (2) are connected or provided with a connection port (6) connecting the outer tube (1) or / and the inner tube (2) with an external pipeline; and the tube wall of the inner tube (2) is provided with a through hole (21) connecting the interlayer (4) with the inside of the inner tube (2).

2. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The outer tube (1) is sleeved outside the inner tube (2) along the axial direction of the inner tube (2), and the distance between the outer tube (1) and the inner tube (2) is greater than or equal to the thickness of the tracer band (5).

3. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The tracer band (5) is detachably fixed on the outer wall of the inner tube (2), and one or more tracer bands (5) can be fixed on the outer wall of the inner tube (2).

4. The device for detecting the sustained-release performance of a tracer tape according to claim 3, wherein: The detection device further comprises: a tracer band fixing member, which is used to fix the tracer band.

5. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The outer tube (1) is fixedly connected to the lower bottom (3), and the inner tube (2) is connected to the lower bottom (3); Preferably, the lower end of the outer tube (1) is integrally formed and fixed with the lower base (3), or the lower end of the outer tube (1) is detachably connected and fixed with the lower base (3); the lower base (3) is provided with a circular groove relative to the position of the inner tube (2), and the lower end of the inner tube (2) is embedded in the groove.

6. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The lower base (3) also has a support column (31), and the support column (31) enables the lower base (3) to have a certain height with the desktop or the ground.

7. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The detection device further comprises: an upper cover (7), the upper end of the outer tube (1) is detachably connected and fixed to the upper cover (7), and the inner tube (2) is connected to the upper cover (7); Preferably, the upper cover (7) is provided with a circular groove at a position relative to the inner tube (2), and the upper end of the inner tube (2) is embedded in the groove.

8. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The through hole (21) is used for liquid or gas to flow between the interlayer 5 and the interior of the inner tube (2) through the through hole (21), and the through hole (21) has one or more; Preferably, the through hole (21) is an inclined hole, and the through hole (21) is an inclined hole inclined upward or / and downward.

9. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The outer tube (1) is provided with a connection port for connecting the outer tube (1) with an external pipeline on its wall, and the inner tube (2) is provided with a connection port for connecting with the external pipeline on its wall, or / and the middle of the upper cover (7), or / and the middle of the lower bottom (3), wherein one connection port is used for liquid / gas inlet and the other for liquid / gas outlet; or the outer tube (1) is provided with at least two connection ports for connecting with the external pipeline on its wall; or the inner tube (2) is provided with at least two connection ports for connecting with the external pipeline on its wall, or / and the middle of the upper cover (7), or / and the middle of the lower bottom (3).

10. The device for detecting the sustained-release performance of a tracer tape according to claim 1, wherein: The detection device further comprises a valve (8), the valve (8) being fixedly connected to the connection port (6), and the valve (8) being used to control whether the liquid or gas flows and the flow speed.

Images