Casing pipe maintenance device for intubation frequency domain reflection soil moisture sensor

Abstract

The utility model provides an intubation tube frequency domain reflection soil moisture sensor sleeve maintenance device, and relates to the technical field of intubation tube frequency domain reflection soil moisture sensors. The maintenance device comprises an inner clamping sleeve and an outer clamping sleeve, the inner clamping sleeve comprises a connecting rod and a cylindrical clamping body, the cylindrical clamping body is installed at one end of the connecting rod, and the cylindrical clamping body can extend to a preset position in the cannula frequency domain reflection soil moisture sensor sleeve through the connecting rod and is attached to the inner wall of the cannula frequency domain reflection soil moisture sensor sleeve; the outer clamping sleeve can tightly hoop the cannula frequency domain reflection soil moisture sensor sleeve to the cylindrical clamping body, a first pull ring is arranged on the outer clamping sleeve, and the cannula frequency domain reflection soil moisture sensor sleeve can be pulled out through the first pull ring. When the maintenance device is used for pulling out the cannula frequency domain reflection soil moisture sensor sleeve, the cannula frequency domain reflection soil moisture sensor sleeve can be prevented from cracking or cracking, and the influence on operation due to the limitation of the height of a human body can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of inserted tube frequency domain reflectance soil moisture sensors, in particular to a sleeve maintenance device for an inserted tube frequency domain reflectance soil moisture sensor. Background Art

[0002] An inserted tube frequency domain reflectance soil moisture sensor mainly consists of a pair of electrodes (parallel metal rods or circular metal rings) forming a capacitor, with the soil in between acting as a dielectric. The capacitor and an oscillator form a tuning circuit, which is scanned with a 100 MHz sine curve signal. The capacitance of the sensor is directly proportional to the dielectric constant of the measured medium between the two electrodes. Since the dielectric constant of water is much larger than that of general media, when the moisture in the soil increases, its dielectric constant increases accordingly, and the capacitance value given by the sensor during measurement also rises. According to the corresponding relationship between the capacitance of the sensor and the soil moisture, the volumetric water content of the soil can be measured. The frequency domain reflectance soil moisture sensor does not directly contact the underground soil, but instead inversely calculates the water content in the soil through the magnetic field signal in a small area around the sensor. The soil moisture sensor needs to be in high-precision contact with the sleeve. During use, it is necessary to frequently maintain the sleeve of the inserted tube frequency domain reflectance soil moisture sensor.

[0003] There are two existing sleeve maintenance devices for inserted tube frequency domain reflectance soil moisture sensors. For the first sleeve maintenance device, there are certain difficulties in the process of tightening the sleeve of the soil moisture sensor. Especially during initial tightening, it is necessary to adjust the position of the lowermost nut multiple times to ensure that the rubber at the lowermost end expands to have sufficient friction with the inner wall of the sleeve, so that the screw rod does not rotate with the upper handle of the device when the upper handle of the device is rotated; the friction between the device and the inner wall of the sleeve is entirely achieved by the expansion of the rubber ring. In order to obtain a sufficiently large friction force between the inner wall of the sleeve and the rubber ring, the rubber ring needs to be longitudinally compressed to a certain extent. When expanding, the sleeve will also have a tendency to expand outwards, but the expansion of the sleeve is much smaller than that of the rubber ring. With a sufficiently large expansion of the rubber ring in the transverse direction, it may cause cracks or ruptures in the sleeve, thus bringing greater trouble to the work of pulling out the sleeve.

[0004] For the second sleeve maintenance device, when in use, it is necessary to remove the installation top cap base at the top of the sleeve, which is connected to the installation sleeve with waterproof glue, otherwise the device cannot fit tightly with the sensor sleeve; it is not convenient to replace the 2m long sensor installation sleeve. Although the 2m long sleeve connection base can be removed by sawing, and then the second device can be used for replacement, due to the height of the sleeve from the ground being 62 cm, which is relatively high from the ground, when using the second device, due to the limitation of human height, it is necessary to rely on a certain height of support to use the device smoothly.

[0005] Therefore, it is necessary to design a maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor to solve the above - mentioned defects of the existing maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor. Summary of the Utility Model

[0006] In view of the above problems in the prior art, the present application proposes a maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor, which can solve the above - mentioned defects of the existing maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor.

[0007] The present utility model provides a maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor. The maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor includes:

[0008] An inner clamping sleeve, the inner clamping sleeve includes a connecting rod and a cylindrical clamping body. The cylindrical clamping body is installed at one end of the connecting rod, and the cylindrical clamping body can extend to a preset position inside the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor through the connecting rod and fit against the inner wall of the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor; and

[0009] An outer clamping sleeve, the outer clamping sleeve can be tightly fastened to the outside of the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor. The outer clamping sleeve can tightly fasten the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor to the cylindrical clamping body, and a first pull - ring is provided on the outer clamping sleeve. Through the first pull - ring, the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor can be pulled out.

[0010] As a further improvement of the above technical solution:

[0011] For the above - mentioned maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor, further, the outer clamping sleeve includes two cooperating hoop members. The first pull - ring is installed on the hoop member. The two hoop members can surround the outside of the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor, and the two hoop members can be connected to each other through a connecting member.

[0012] For the above - mentioned maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor, further, the contact surfaces where the two hoop members are butt - jointed are respectively provided with a limiting protrusion and a limiting groove that can cooperate with each other.

[0013] For the above - mentioned maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor, further, the outer clamping sleeve further includes a protective clamping sleeve. The protective clamping sleeve is sleeved on the outside of the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor, and the two hoop members can surround the outside of the protective clamping sleeve.

[0014] For the above - mentioned maintenance device for the sleeve of the inserted - type frequency - domain reflectometry soil moisture sensor, further, the inner clamping sleeve further includes a second pull - ring, and the second pull - ring is installed at the end of the connecting rod away from the cylindrical clamping body.

[0015] The above-mentioned maintenance device for the cannula of the frequency-domain reflectometry soil moisture sensor. Further, the outer wall of the cylindrical body is coated with hard rubber.

[0016] The above-mentioned maintenance device for the cannula of the frequency-domain reflectometry soil moisture sensor. Further, the connecting rod and the cylindrical body are connected by threaded assembly.

[0017] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the present invention can be achieved.

[0018] A maintenance device for the cannula of the frequency-domain reflectometry soil moisture sensor provided by the present invention has at least the following beneficial effects compared with the prior art: When it is necessary to pull out the cannula of the frequency-domain reflectometry soil moisture sensor for maintenance, first extend the cylindrical body to a preset position inside the cannula of the frequency-domain reflectometry soil moisture sensor through the connecting rod and fit it to the inner wall of the cannula of the frequency-domain reflectometry soil moisture sensor. Then, tightly fasten the outer sleeve to the outside of the cannula of the frequency-domain reflectometry soil moisture sensor. The outer sleeve tightly fastens the cannula of the frequency-domain reflectometry soil moisture sensor to the cylindrical body. Finally, use auxiliary means such as a rope to connect to the first pull ring and pull out the part of the cannula of the frequency-domain reflectometry soil moisture sensor below the ground. Using this maintenance device to pull out the cannula of the frequency-domain reflectometry soil moisture sensor can not only avoid cracks or ruptures in the cannula of the frequency-domain reflectometry soil moisture sensor, but also avoid affecting the operation due to the limitation of human height.

[0019] To make the above objects, features and advantages of the present invention more obvious and understandable, the following specific preferred embodiments are given below and described in detail in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0021] In the following, the present invention will be described in more detail based on the embodiments and with reference to the accompanying drawings. Among them:

[0022] Figure 1 Shows a schematic diagram of the use of the maintenance device for the cannula of the frequency-domain reflectometry soil moisture sensor provided by the embodiment of the present invention;

[0023] Figure 2Shows the structural schematic diagram of the inner ferrule of the casing maintenance device for the intubation frequency domain reflectometry soil moisture sensor provided by the embodiment of the present utility model;

[0024] Figure 3 Shows the structural schematic diagram of the outer ferrule of the casing maintenance device for the intubation frequency domain reflectometry soil moisture sensor provided by the embodiment of the present utility model;

[0025] Figure 4 Shows the structural schematic of the hoop member of the casing maintenance device for the intubation frequency domain reflectometry soil moisture sensor provided by the embodiment of the present utility model Figure 1 ;

[0026] Figure 5 Shows the structural schematic of the hoop member of the casing maintenance device for the intubation frequency domain reflectometry soil moisture sensor provided by the embodiment of the present utility model Figure 2 ;

[0027] In the drawings, the same components are denoted by the same reference numerals. The drawings are not drawn to actual scale.

[0028] Description of reference numerals:

[0029] 100 - Casing maintenance device for intubation frequency domain reflectometry soil moisture sensor, 110 - Inner ferrule, 111 - Connecting rod, 112 - Cylindrical clamping body, 113 - Second pull ring, 120 - Outer ferrule, 121 - First pull ring, 122 - Hoop member, 123 - Connecting member, 124 - Limiting protrusion, 125 - Limiting groove, 126 - Protection ferrule. Detailed description of the specific implementation

[0030] The following details the embodiments of the present utility model. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals denote the same or similar elements or elements with the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation of the present utility model.

[0031] In the description of the present utility model, it should be understood that the orientation or positional relationships indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation of the present utility model.

[0032] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, "a plurality of" means two or more unless otherwise specifically defined.

[0033] In the present utility model, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0034] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature is at a higher horizontal height than the second feature. The first feature being "under", "beneath" and "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature is at a lower horizontal height than the second feature.

[0035] The present utility model will be further described below with reference to the accompanying drawings.

[0036] An embodiment of the present utility model provides a maintenance device 100 for an insertion tube frequency domain reflectometry soil moisture sensor sleeve, which can solve the defects of the existing maintenance device for an insertion tube frequency domain reflectometry soil moisture sensor sleeve.

[0037] Please refer to Figure 1 , the maintenance device 100 for an insertion tube frequency domain reflectometry soil moisture sensor sleeve provided by the embodiment of the present utility model, the maintenance device 100 for an insertion tube frequency domain reflectometry soil moisture sensor sleeve includes an inner ferrule 110 and an outer ferrule 120.

[0038] Please combine Figure 2 , the inner ferrule 110 includes a connecting rod 111 and a cylindrical body 112, the cylindrical body 112 is installed at one end of the connecting rod 111, and the cylindrical body 112 can extend into the insertion tube frequency domain reflectometry soil moisture sensor sleeve to a preset position through the connecting rod 111 and fit against the inner wall of the insertion tube frequency domain reflectometry soil moisture sensor sleeve; please combine Figure 3, the outer ferrule 120 can tightly fit around the outside of the insertion tube frequency domain reflectance soil moisture sensor sleeve. The outer ferrule 120 can tightly fit the insertion tube frequency domain reflectance soil moisture sensor sleeve onto the cylindrical body 112, and a first pull ring 121 is provided on the outer ferrule 120. Through the first pull ring 121, the insertion tube frequency domain reflectance soil moisture sensor sleeve can be pulled out.

[0039] When it is necessary to pull out the insertion tube frequency domain reflectance soil moisture sensor sleeve for maintenance, first extend the cylindrical body 112 through the connecting rod 111 to a preset position inside the insertion tube frequency domain reflectance soil moisture sensor sleeve and fit it against the inner wall of the insertion tube frequency domain reflectance soil moisture sensor sleeve. Then, tightly fit the outer ferrule 120 around the outside of the insertion tube frequency domain reflectance soil moisture sensor sleeve. The outer ferrule 120 tightly fits the insertion tube frequency domain reflectance soil moisture sensor sleeve onto the cylindrical body 112. Finally, use a rope or the like to assist in connecting to the first pull ring 121 and pull out the part of the insertion tube frequency domain reflectance soil moisture sensor sleeve below the ground.

[0040] Using the maintenance device 100 for the insertion tube frequency domain reflectance soil moisture sensor sleeve provided by the embodiment of the present utility model to pull out the insertion tube frequency domain reflectance soil moisture sensor sleeve can avoid cracks or breakage of the insertion tube frequency domain reflectance soil moisture sensor sleeve and can also avoid affecting the operation due to the limitation of human height.

[0041] For the maintenance device 100 for the insertion tube frequency domain reflectance soil moisture sensor sleeve provided by the embodiment of the present utility model, specifically, please refer to Figure 3 , the outer ferrule 120 includes two cooperating hoop members 122. The first pull ring 121 is installed on the hoop member 122. The two hoop members 122 can surround the outside of the insertion tube frequency domain reflectance soil moisture sensor sleeve, and the two hoop members 122 can be connected to each other through a connecting member 123. In this embodiment, the two hoop members 122 can be connected to each other through bolts.

[0042] Furthermore, please combine Figure 4 and Figure 5 , the contact surfaces where the two hoop members 122 are butt-jointed are respectively provided with a limiting protrusion 124 and a limiting groove 125 that can cooperate with each other. When it is necessary to install the two hoop members 122, first surround the two hoop members 122 around the outside of the insertion tube frequency domain reflectance soil moisture sensor sleeve. The limiting protrusion 124 and the limiting groove 125 on the contact surfaces where the two hoop members 122 are butt-jointed cooperate with each other, and finally use the connecting member 123 to connect to each other. The cooperation between the limiting protrusion 124 and the limiting groove 125 can prevent the outer ferrule 120 from tilting during the process of being tightly clamped with the sensor sleeve.

[0043] The casing maintenance device 100 for the inserted tube frequency domain reflectometry soil moisture sensor provided by the embodiment of the present utility model. Further, please specifically refer to Figure 3 , the outer casing 120 further includes a protective casing 126. The protective casing 126 is sleeved on the outside of the inserted tube frequency domain reflectometry soil moisture sensor casing. The two hoop members 122 can surround the outside of the protective casing 126. The length of the protective casing 126 is greater than the thickness of the hoop member 122, so as to increase the contact area between the outer casing 120 and the outer wall of the sensor casing, thereby avoiding damage to the sensor casing caused by the action of the hoop member 122.

[0044] The casing maintenance device 100 for the inserted tube frequency domain reflectometry soil moisture sensor provided by the embodiment of the present utility model. Further, please specifically refer to Figure 2 , the inner casing 110 further includes a second pull ring 113. The second pull ring 113 is installed at one end of the connecting rod 111 away from the cylindrical clamping body 112. The second pull ring 113 is used to lift the inner casing 110. The outer side wall of the cylindrical clamping body 112 is coated with hard rubber. The hard rubber has a certain degree of slight compressibility. In case of slight differences in the inner diameter of the soil moisture sensor casing due to processing technology limitations, when the inner diameter of the casing is slightly larger, the cylindrical clamping body cannot be in close contact with the inner wall of the casing, resulting in tiny pores. The pressure when the outer casing 120 clamps the soil moisture penetration sensor casing from the outside may cause the casing to break or crack. In this embodiment, the connecting rod 111 and the cylindrical clamping body 112 are connected by threaded assembly.

[0045] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0046] Although the present utility model has been described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present utility model. Therefore, it should be understood that many modifications can be made to the exemplary embodiments, and other arrangements can be designed, as long as they do not depart from the spirit and scope of the present utility model as defined by the appended claims. It should be understood that different dependent claims and the features described herein can be combined in a manner different from that described in the original claims. It should also be understood that the features described in connection with a single embodiment can be used in other described embodiments.

Claims

1. A tube-insertion frequency domain reflection soil moisture sensor casing maintenance device, characterized in that: The intubation frequency domain reflection soil moisture sensor casing maintenance device comprises: An inner ferrule, the inner ferrule comprising a connecting rod and a cylindrical ferrule, the cylindrical ferrule being mounted on one end of the connecting rod, the cylindrical ferrule being able to extend through the connecting rod to a preset position in the casing of the inserting tube frequency domain reflection soil moisture sensor and being attached to the inner wall of the casing of the inserting tube frequency domain reflection soil moisture sensor; and The outer ferrule can be tightly clamped on the outside of the insert tube frequency domain reflection soil moisture sensor sleeve, and the outer ferrule can tightly clamp the insert tube frequency domain reflection soil moisture sensor sleeve on the cylindrical clamp body, and the outer ferrule is provided with a first pull ring, through which the insert tube frequency domain reflection soil moisture sensor sleeve can be pulled out.

2. The intubation frequency domain reflection soil moisture sensor casing maintenance device according to claim 1 is characterized in that: The outer ferrule includes two mutually cooperating clamping parts, the first pull ring is installed on the clamping parts, the two clamping parts can be encircled on the outside of the insert frequency domain reflection soil moisture sensor sleeve, and the two clamping parts can be connected to each other through a connecting piece.

3. The intubation frequency domain reflection soil moisture sensor casing maintenance device according to claim 2 is characterized in that: The contact surfaces where the two clamping members are butted against each other are respectively provided with a limiting protrusion and a limiting groove that can cooperate with each other.

4. The intubation frequency domain reflection soil moisture sensor casing maintenance device according to claim 2 is characterized in that: The outer ferrule also includes a protective ferrule, which is sleeved on the outside of the insert frequency domain reflection soil moisture sensor sleeve, and the two clamping hoops can be encircled on the outside of the protective ferrule.

5. The intubation frequency domain reflection soil moisture sensor casing maintenance device according to claim 1, characterized in that: The inner ferrule also includes a second pull ring, which is installed on an end of the connecting rod away from the cylindrical ferrule body.

6. The intubation frequency domain reflection soil moisture sensor casing maintenance device according to claim 1, characterized in that: The outer side wall of the cylindrical card body is coated with hard rubber.

7. The intubation frequency domain reflection soil moisture sensor casing maintenance device according to claim 1, characterized in that: The connecting rod and the cylindrical card body are connected by threaded assembly.

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