Transmit-receive integrated electromagnetic induction detection coil

Abstract

The utility model discloses a transmit-receive integrated electromagnetic induction detection coil comprising at least two coils arranged in parallel, the coils comprise at least one transmitting coil, each coil comprises a rigid coil support, a coil lead and an insulation protection sleeve, a winding clamping groove is formed around the outer side of the rigid coil support, and the coil lead is arranged in the winding clamping groove. The coil wire is wound in the winding clamping groove, the insulation protection sleeve is sleeved outside the rigid coil support in a matched mode, the insulation protection sleeve is formed by splicing a plurality of insulation pipes, every two adjacent insulation pipes are connected through a pipe joint, and the coil support is formed by splicing a plurality of insulation supporting rods which are sequentially connected. The receiving and transmitting integrated induction coil is made of standard sections, and is simple and convenient to manufacture, stable in structure and easy to assemble and disassemble.

Description

Technical Field

[0001] The utility model belongs to the technical field of electromagnetic induction detection, and in particular relates to a transceiver-integrated electromagnetic induction detection coil. Background Art

[0002] Electromagnetic induction detection technology is widely used in geophysical exploration and nondestructive testing. It often requires multi-turn transmitting or receiving coils as sensors. These fixed coils maintain their size and specifications during field operations, exhibiting uniform electromagnetic response parameters and excellent stability, resulting in a higher signal-to-noise ratio and improved anomaly resolution. However, the fixed formation of multi-turn transmitting or receiving coils is a challenge, especially when the coils are large.

[0003] In addition, in order to improve the resolution of electromagnetic induction methods, the transceiver coils are made into an integrated, symmetrical and stable manner, which can eliminate the interference of primary field induction coupling. For example, invention patents CN201110424903.9 and invention patents CN201410092714.X use the differential measurement and equivalent reverse flux measurement principles respectively, and both require the transceiver integrated coils to have extremely high symmetrical assembly accuracy.

[0004] Existing coil manufacturing methods typically involve first creating a mold, then using non-metallic materials like fiberglass to create a hollow, interlocking ring. Multiple turns of coil are wound around the ring, and then secured using a snap-on packaging method. While this method is robust, it is extremely expensive and requires assembly, especially precise and symmetrical assembly, which can be challenging. Summary of the Invention

[0005] The main purpose of the utility model is to provide an electromagnetic induction detection coil with a transmitter and receiver, aiming to effectively solve one of the technical problems existing in the background technology.

[0006] To this end, the utility model provides an integrated transceiver electromagnetic induction detection coil, comprising at least two coils arranged in parallel, wherein the coils include at least one transmitting coil, and each coil includes a rigid coil bracket, a coil wire and an insulating protective cover. Winding slots are formed around the outer side of the rigid coil bracket, and the coil wire is wound in the winding slots. The insulating protective cover is matched with the outside of the rigid coil bracket, and the insulating protective cover is spliced ​​by multiple insulating pipes. Two adjacent insulating pipes are connected by a pipe joint, and the coil bracket is spliced ​​by multiple insulating support rods connected in sequence.

[0007] Specifically, two adjacent coils are connected via a supporting connecting pipe, and both ends of the supporting connecting pipe are respectively connected to corresponding pipe joints on the insulating protective sleeves of the two coils.

[0008] Specifically, a rigid support rod is fixedly installed in the support connecting tube.

[0009] Specifically, the insulating support rods and the rigid support rods are both made of wood rods, carbon fiber rods or glass fiber rods, and the insulating pipes are made of PVC pipes, glass fiber pipes or UPVC pipes.

[0010] Specifically, a slit is provided on the outer side of the insulating protective cover, which facilitates the coil wire to be inserted into the winding slot and is closed after the coil wire is wound.

[0011] Specifically, the insulating support rods and the corresponding insulating tubes are fixed by gluing, and two adjacent insulating support rods are fixed by gluing.

[0012] Specifically, the coil includes a transmitting coil and a receiving coil.

[0013] Specifically, the coil includes a transmitting coil and two receiving coils, the two receiving coils are symmetrically arranged on both sides of the transmitting coil, and the two receiving coils are connected in reverse series or in parallel to form a pair of signal heads.

[0014] Specifically, the coil includes a receiving coil and two transmitting coils, the two transmitting coils are symmetrically arranged on both sides of the receiving coil, and the two transmitting coils are connected in reverse series or in parallel to form a pair of signal heads.

[0015] Specifically, the coil includes two receiving coils and two transmitting coils. The two receiving coils are connected in reverse series or in parallel to form a pair of signal heads, and the two transmitting coils are connected in reverse series or in parallel to form another pair of signal heads, thereby forming a combined dual-transmitting and dual-receiving operating coil.

[0016] Compared with the prior art, the present invention has at least the following beneficial effects: the coil bracket is made of water supply or chemical national standard pipes, and the pipes are connected by multi-way pipe joints, so that the transmitting coil and receiving coil can be standardized, the coil is light in weight, and the shape and size can be flexibly controlled; the built-in support rod mode of the pipe is used to ensure the overall rigidity of the coil, and at the same time, by slotting the support rod, a winding slot for winding multiple turns of coil wire is formed. This integrated transceiver induction coil uses standard profiles, is simple to manufacture, has a stable structure, and is easy to assemble and disassemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a schematic diagram of a transceiver integrated coil provided by an embodiment of the present utility model;

[0019] Figure 2 This is a schematic transverse cross-sectional view of the transmitting coil involved in the present utility model;

[0020] Figure 3 This is a longitudinal cross-sectional schematic diagram of the transmitting coil involved in the utility model;

[0021] Figure 4 This is a schematic diagram of a single-transmit dual-receive coil according to an embodiment of the present utility model;

[0022] Figure 5 This is a schematic diagram of a double-launch and one-retract loop involved in an embodiment of the present utility model;

[0023] Figure 6 This is a double-transmitting and double-receiving coil involved in an embodiment of the utility model;

[0024] Among them: 1. Rigid coil bracket; 101. Insulating support rod; 2. Coil conductor; 3. Insulating protective cover; 301. Insulating pipe; 302. Pipe joint; 4. Winding slot; 5. Support connecting pipe; 6. Slit. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0027] Furthermore, 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 number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of this utility model, "plurality" means two or more, unless otherwise specifically defined.

[0028] See also Figures 1-6 A transceiver electromagnetic induction detection coil includes at least two coils arranged in parallel, the coils including at least one transmitting coil, each coil including a rigid coil support 1, a coil conductor 2 and an insulating protective cover 3, winding slots 4 are formed around the outer side of the rigid coil support 1, the coil conductor 2 is wound in the winding slots 4, the insulating protective cover 3 is matched and sleeved on the outside of the rigid coil support 1, the insulating protective cover 3 is spliced ​​by multiple insulating tubes 301, and two adjacent insulating tubes 301 are connected by a pipe joint 302, and the coil support is spliced ​​by multiple insulating support rods 101 connected in sequence.

[0029] In this embodiment, the coil bracket is made of water supply or chemical national standard pipes, and the pipes are connected by multi-way pipe joints 302, which can achieve standardization of the transmitting coil and receiving coil. The coil is lightweight and the shape and size can be flexibly controlled. The built-in support rod mode of the pipe is used to ensure the overall rigidity of the coil. At the same time, by slotting the support rod, a winding slot 4 is formed for winding multiple turns of coil wire 2. This integrated transceiver induction coil uses standard profiles, is easy to manufacture, has a stable structure, and is easy to assemble and disassemble.

[0030] See also Figure 1 and Figure 2 Specifically, two adjacent coils are connected through a supporting connecting tube 5, and the two ends of the supporting connecting tube 5 are respectively connected to the corresponding pipe joints 302 on the insulating protective sleeves 3 of the two coils. This connection method makes the connection between coils easier and the coil combination is convenient.

[0031] To ensure the support rigidity of the support connecting pipe 5, a rigid support rod is fixedly installed in the support connecting pipe 5. In actual design, the insulating support rod 101 and the rigid support rod can be made of wooden sticks, and the insulating pipe 301 can be made of PVC, UPVC, fiberglass, etc. The insulating pipe 301 can be formed into a circular, square or other shape.

[0032] See also Figure 3It is understood that, in actual design, to facilitate the winding of the coil conductor 2, a circle of slits 6 is provided on the outer side of the insulating protective sleeve 3 at a position corresponding to the winding slot 4. When winding the coil conductor 2, the corresponding insulating support rod 101 is first inserted into the corresponding insulating tubing 301. Then, the insulating tubings 301 are connected using a multi-way pipe joint 302 to form a coil support. The coil conductor 2 is then inserted into the winding slot 4 through the slits 6 to achieve multiple turns of the coil conductor 2. After the coil is wound, the slits 6 are sealed by gluing or welding. Of course, the coil winding method in the tube can also be a turn-by-turn method.

[0033] The coil conductor 2 utilizes enameled wire. The insulating support rod 101 and the corresponding insulating tubing 301 can be secured by gluing. Adjacent insulating support rods 101 can also be secured by gluing, although screws or other fasteners can also be used. The insulating protective cover 3 can be formed into a triangular or polygonal shape using multiple profiles and connectors. This means each coil can be triangular or polygonal in shape. Furthermore, when adjacent coils are arranged in a staggered, cross-shaped configuration, the transceiver coil is more stable.

[0034] The following will explain in detail several common combinations of coils

[0035] (1) Transceiver coil

[0036] Select 4 UPVC chemical pipes with a length of 100cm and 70cm, Ø40mm and a wall thickness of 2mm, and configure 8 wooden sticks of the same length and 36mm diameter, 30211 four-way pipe joints, one five-way pipe joint, a pair of four-core connectors, and 4 supporting connecting pipe profiles with a length of 10cm and an outer diameter of 40mm and built-in wooden sticks.

[0037] All wooden sticks are slotted 2cm*2cm on one side and fixed inside the pipe. The slotted side of the wooden stick faces the outside of the coil. The wooden sticks are inserted into the profile pipe by gluing. Ensure that the slot of the wooden stick faces the outside of the coil. Assemble all the insulating pipes 301 through the four-way joint. Figure 1 The type shown forms an insulating protective sleeve 3, in which a four-core socket is installed at one of the five-way pipe joint ports; a 3mm slit is opened on the outer pipe of the coil for winding the wire; a 10*10 turn transmitting or receiving coil is wound with a silk-covered enameled wire with an outer diameter of 2mm, and the UPVC pipe seam around the wound coil is sealed by PVC welding. The transmitting and receiving coils are connected and fixed by a supporting connecting pipe 5 through a four-way pipe joint, and the signal ends of the two pairs of transmitting and receiving wires are respectively connected to the four-core male / female sockets, forming a transmitting and receiving electromagnetic detection coil combination.

[0038] This combined transmitter-receiver coil, using a cable with paired female and male signal plugs, can be connected to the signal transmitter and receiver of frequency domain electromagnetic detection instruments. This combination coil enables field detection operations. The size and relative position of the transmitter and receiver coils are stable, resulting in a higher signal-to-noise ratio and anomaly resolution. Similar integrated transmitter-receiver coils can be miniaturized and used in conjunction with electromagnetic nondestructive testing instruments, achieving similarly high signal-to-noise ratio and anomaly resolution.

[0039] (2) One-transmit-two-receive or two-transmit-one-receive coil production

[0040] If electromagnetic differential detection is required, especially when the mutual inductance signal between the transmitting and receiving coils needs to be offset, such as the working principle of invention patent CN201110424903.9 and invention patent CN201410092714.X, a single transmitter and dual receiver mode is the best. Figure 4 and Figure 5 As shown, 4 UPVC chemical pipe profiles with a length of 100 cm, a diameter of Ф40 mm and a wall thickness of 2 mm, and 8 UPVC chemical pipe profiles with a length of 70 cm, a diameter of Ф40 mm and a wall thickness of 2 mm are selected, and 12 wooden sticks of the same length and a diameter of 36 mm, 14 four-way pipe joints, 1 five-way pipe joint, a pair of four-core connectors, and 8 supporting connecting pipe profiles with a length of 50 cm and an outer diameter of 40 mm and built-in wooden sticks are configured.

[0041] Use the transceiver integrated coil production method to make a square transmitting coil with a side length of 100 cm and two square receiving coils of the same specification with a side length of 70 cm. Figure 4 and Figure 5 As shown, eight supporting connecting tubes 5 are used to symmetrically fix two receiving coils on both sides of the transmitting coil through a multi-way pipe joint 302. The two receiving coils are connected in reverse series or in parallel inside the tube to form a pair of signal heads. Together with the pair of signal heads of the transmitting coil and the four-core socket fixed on the five-way connector, a differential electromagnetic induction coil with one transmitter and two receivers is formed.

[0042] The coil can eliminate interference from the primary field and has extremely high resolution. This manufacturing method effectively solves the manufacturing difficulties of this type of coil and realizes the principle of differential or gradient measurement method described in invention patent CN201110424903.9.

[0043] By utilizing the principle of interchangeability in physics, an integrated coil with two transmitters and one receiver can be produced for electromagnetic detection. The two transmitting coil wires are connected in reverse series and parallel inside the pipe, and the receiving coil is located on the symmetrical plane in the center of the two transmitting coils. During the electromagnetic detection operation, the influence of the primary field can also be offset, realizing the equivalent reverse magnetic flux method described in the invention patent CN201410092714.X.

[0044] Transmitter / receiver coils, or dual transmitter / receiver coils with one receiver, can be used in time-domain electromagnetic instruments, such as transient electromagnetic instruments, providing critical support for precision detection. Using a variable-diameter multi-way connector and corresponding pipe sections, transmitter or receiver coils made from pipes of different diameters can be connected to form a single transceiver coil.

[0045] (3) Dual-transmitting and dual-receiving coil production

[0046] like Figure 6 As shown, a single transmitting and receiving coil can form a pair of integrated transmitting and receiving electromagnetic detection coils. Two pairs of identically sized integrated transmitting and receiving coils can be paired to form a combined dual-transmitting, dual-receiving coil. This combined coil can be secured together via a supporting connecting tube 5 during field detection operations, forming a three-dimensional coil structure with specific functions. After use, it can be disassembled into two independent integrated transmitting and receiving coils for easy storage and transportation.

[0047] The two pairs of transceiver coils can also be placed in different spatial positions for electromagnetic detection operations, realizing an electromagnetic excitation response signal mutual induction device, detection device and detection method as described in invention patent CN201910794580.9.

[0048] To sum up, compared with the existing production models and methods, this case solves the production difficulties of transceiver coils in practice of various electromagnetic detection methods. The main production materials use water supply or chemical national standard profiles, which can realize the standardization of the production of transmitting coils and receiving coils; the coils are light in weight and the shape and size can be flexibly controlled; the built-in wood reinforcement model of the pipe is used to ensure the overall rigidity of the coil, the finished product structure is reliable, easy to assemble and disassemble, and convenient for on-site use and indoor storage; the staggered cross structure is adopted, and the transceiver integrated coil is more stable. The national standard or industry standard profiles are used to make the coils, which have regular shapes and are easy to make, greatly reducing production costs, and providing convenience for the application and promotion of related technical methods.

[0049] Unless otherwise stated, for any technical solution disclosed in the present invention, if a numerical range is disclosed, the disclosed numerical range is a preferred numerical range. Those skilled in the art should understand that a preferred numerical range is merely a numerical range that provides a more significant or representative technical effect among a variety of practicable numerical values. Due to the large number of numerical values, it is impossible to enumerate them exhaustively. Therefore, the present invention discloses only some numerical values ​​to illustrate the technical solution of the present invention. Furthermore, the numerical values ​​listed above should not be construed as limiting the scope of protection of the present invention.

[0050] At the same time, if the above-mentioned utility model discloses or involves components or structural parts that are fixedly connected to each other, then, unless otherwise stated, the fixed connection can be understood as: a detachable fixed connection (for example, using bolts or screws to connect), and can also be understood as: a non-detachable fixed connection (for example, riveting, welding). Of course, the mutual fixed connection can also be replaced by an integrated structure (for example, manufactured by a casting process) (except where it is obviously impossible to use an integrated forming process).

[0051] In addition, unless otherwise stated, terms used in any of the technical solutions disclosed in the present invention to express positional relationships or shapes include states or shapes that are similar, analogous, or close thereto. Any component provided by the present invention may be assembled from multiple separate components or may be a single component manufactured using an integral molding process.

[0052] The above embodiments are merely examples to clearly illustrate the present invention and are not intended to limit its implementation. Those skilled in the art will readily appreciate that other variations or modifications based on the above descriptions are possible. It is not necessary and impossible to provide an exhaustive list of all embodiments. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. A transceiver integrated electromagnetic induction detection coil, characterized in that: The invention comprises at least two coils arranged in parallel, wherein the coils include at least one transmitting coil, and each coil includes a rigid coil support (1), a coil conductor (2) and an insulating protective sleeve (3). Winding slots (4) are formed around the outer periphery of the rigid coil support (1), the coil conductor (2) is wound in the winding slots (4), and the insulating protective sleeve (3) is matched and sleeved outside the rigid coil support (1). The insulating protective sleeve (3) is formed by splicing a plurality of insulating pipes (301), and two adjacent insulating pipes (301) are connected by a pipe joint (302). The rigid coil support (1) is spliced ​​by a plurality of insulating support rods (101) connected in sequence.

2. The electromagnetic induction detection coil with integrated transmitter and receiver according to claim 1, characterized in that: Two adjacent coils are connected via a supporting connecting pipe (5), and both ends of the supporting connecting pipe (5) are respectively connected to corresponding pipe joints (302) on the insulating protective sleeves (3) of the two coils.

3. The electromagnetic induction detection coil with a transmitter and receiver according to claim 2, characterized in that: A rigid support rod is fixedly mounted in the support connecting pipe (5).

4. The electromagnetic induction detection coil with integrated transmitter and receiver according to claim 3, characterized in that: The insulating support rod (101) and the rigid support rod are both made of wood, carbon fiber or glass fiber, and the insulating pipe (301) is made of PVC, glass fiber or UPVC.

5. The electromagnetic induction detection coil for transmitting and receiving according to any one of claims 1 to 3, characterized in that: The outer side of the insulating protective sleeve (3) is provided with a slit (6) which facilitates the coil wire (2) to be inserted into the winding slot (4) and is closed after the coil wire (2) is wound.

6. The electromagnetic induction detection coil with a transmitter and receiver according to claim 4, characterized in that: The insulating support rod (101) and the corresponding insulating tube (301) are fixed by gluing, and two adjacent insulating support rods (101) are fixed by gluing.

7. The electromagnetic induction detection coil with a transmitter and receiver according to claim 4, characterized in that: The coils include a transmitting coil and a receiving coil.

8. The electromagnetic induction detection coil with a transmitter and receiver according to claim 4, characterized in that: The coil includes a transmitting coil and two receiving coils, the two receiving coils are symmetrically arranged on both sides of the transmitting coil, and the two receiving coils are connected in reverse series or in parallel to form a pair of signal heads.

9. The electromagnetic induction detection coil with a transmitter and receiver according to claim 4, characterized in that: The coil includes a receiving coil and two transmitting coils, the two transmitting coils are symmetrically arranged on both sides of the receiving coil, and the two transmitting coils are connected in reverse series or in parallel to form a pair of signal heads.

10. The electromagnetic induction detection coil with a transmitter and receiver according to claim 4, characterized in that: The coil includes two receiving coils and two transmitting coils. The two receiving coils are connected in reverse series or in parallel to form a pair of signal heads, and the two transmitting coils are connected in reverse series or in parallel to form another pair of signal heads, thereby forming a combined dual-transmitting and dual-receiving operating coil.

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