Magnetostrictive sensor

Abstract

The utility model provides a magnetostrictive sensor, and the sensor comprises an electronic cabin, the side wall of which is provided with a threading hole; the electronic bin comprises a base and an upper cover, a connecting flange is arranged on the base, and the upper cover is connected with the connecting flange to form an accommodating space; the sensor main body is arranged in the accommodating space, the sensor main body comprises a sensitive assembly and a signal plate, and the sensitive assembly is connected with the signal plate; the wiring wire penetrates through the threading hole and is connected with the sensor main body; the measuring rod is arranged below the electronic bin; the position sensing element is arranged in the measuring rod in a penetrating manner, and the position sensing element is connected with the sensitive assembly; the magnetic ring is arranged outside the measuring rod in a penetrating manner, and a magnetic core is arranged in the magnetic ring; wherein the position sensing element is used for sensing the position of the magnetic ring and outputting a sensing signal, the sensitive assembly is used for receiving the sensing signal and converting the sensing signal into a position signal, and the signal plate is used for processing the position signal and outputting the position signal. The magnetostrictive sensor is small in structural size, convenient to install and more suitable for being used in the space-limited environment.

Description

Technical Field

[0001] The present application relates to the technical field of measuring instruments, and in particular to a magnetostrictive sensor. Background Art

[0002] A non-contact sensor is a device that can measure and detect parameters or states of a target object without physical contact. It has reliable performance and a long trouble-free working time. It is widely used in industries such as machinery, mining, and light industry. It is particularly suitable for use in harsh working conditions such as the liquid level of the boiler drum in thermal power plants.

[0003] In related technologies, non-contact sensors can be divided into microwave radar sensors, vibration sensors, ultrasonic sensors, etc. Among them, microwave radar sensors can play a good role in high viscosity or high pollution. They do not need to be recalibrated and regularly maintained. The measurement accuracy and repeatability are also high, but the price is high and the installation is complicated. Vibration sensors and ultrasonic sensors also have the problem of complex installation, and both need to be recalibrated and regularly maintained after installation.

[0004] In view of this, there is an urgent need to design a new non-contact sensor that is simple in structure and easy to install and use. Utility Model Content

[0005] This application aims to solve at least one of the technical problems existing in the related art.

[0006] To this end, the present application proposes a magnetostrictive sensor.

[0007] In view of this, the present application proposes a magnetostrictive sensor, comprising: an electronic compartment, a side wall of which is provided with a wire threading hole; the electronic compartment comprises a base and an upper cover, the base is provided with a connecting flange, the upper cover and the connecting flange are connected to form an accommodating space; a sensor body, arranged in the accommodating space, the sensor body comprises a sensitive component and a signal board, the sensitive component and the signal board are connected; a connecting wire passes through the wire threading hole and is connected to the sensor body; a measuring rod, arranged below the electronic compartment; a position sensing element, passed through the measuring rod, the position sensing element and the sensitive component are connected; a magnetic ring, passed through the outside of the measuring rod, the magnetic ring having a built-in magnetic core; wherein, the position sensing element is used to sense the position of the magnetic ring and output a sensing signal, the sensitive component is used to receive the sensing signal and convert it into a position signal, and the signal board is used to process the position signal and output it.

[0008] In the above technical solution, the electronics compartment includes a base and a top cover, which are fixed together via a connecting flange to form an enclosed housing, thereby enabling the installation, storage, and sealing of the sensor body. This fully enclosed structure makes the sensor more robust and pressure-resistant, achieving a protection level of IP68 or higher, thereby ensuring high stability for the magnetostrictive sensor proposed in this embodiment. Furthermore, wire holes are provided in the side walls of the electronics compartment, extending from the side to avoid overhead obstructions during installation. This flat structure makes the entire sensor more compact, thereby enhancing installation flexibility. These two factors combined make the magnetostrictive sensor proposed in the above embodiment compact, easy to install, and suitable for use in space-constrained environments.

[0009] In some technical solutions, optionally, a connecting flange is provided on the outer edge of the base away from the upper cover and can support the upper cover; a first sealing ring is provided between the upper cover and the base.

[0010] In the above technical solution, the upper cover is supported by the connecting flange so that the upper cover can be placed stably on the base, which not only improves the sealing of the electronic compartment, but also improves the structural strength of the electronic compartment; further, a first sealing ring is provided between the base and the upper cover to ensure that external dust, moisture and other debris cannot enter the electronic compartment, thereby protecting the sensor body in the electronic compartment from damage, thereby improving the measurement accuracy and reliability of the magnetostrictive sensor.

[0011] In some technical solutions, optionally, a plurality of threaded holes are provided on the circumferential side of the connecting flange, and the upper cover and the connecting flange are connected by a plurality of screws passing through the threaded holes.

[0012] The connection method of threaded holes and screws makes the structure of the magnetostrictive sensor simpler and clearer, making it easy to manufacture and install. At the same time, this connection method has high reliability and can withstand large vibrations and shocks, ensuring that the sensor can still work stably in harsh environments. And when maintenance or replacement is required, the top cover can be easily opened by loosening the screws, without the need for complicated disassembly.

[0013] In some technical solutions, optionally, a sealing groove is provided on the outer side of the base; and the first sealing ring is embedded in the sealing groove.

[0014] This helps to enhance the sealing performance of the electronic compartment, thereby ensuring the long-term stable operation of the magnetostrictive sensor; at the same time, the design of the sealing groove makes the installation process of the first sealing ring simpler and more intuitive, thereby reducing the difficulty of installation.

[0015] In some technical solutions, optionally, the magnetostrictive sensor also includes: an adapter, which is arranged at the wire threading hole and has a through hole connected to the wire threading hole; a tightening nut, which is connected to the adapter and is located at the end of the through hole away from the electronic compartment to fasten and seal the connecting wires.

[0016] In the above technical solution, a seamless connection is achieved by setting up an adapter, which helps to improve the stability of the structure; at the same time, the clamping nut and the adapter are tightly connected. When the clamping nut is tightened, it can also effectively prevent foreign debris from entering the electronic compartment through the gap between the connecting wires and the wire holes, thereby helping to improve the stability of the magnetostrictive sensor.

[0017] In some technical solutions, the magnetostrictive sensor may optionally further include a second sealing ring disposed in the through hole, thereby further improving the sealing performance.

[0018] In some technical solutions, the magnetostrictive sensor optionally further includes a compression washer located between the compression nut and the second sealing ring. This prevents the compression nut from squeezing the wiring during tightening, thereby reducing the risk of wear and damage.

[0019] In some technical solutions, the second sealing ring is optionally a rubber ring. Rubber materials have excellent elasticity and resilience, and can tightly fit the gap between the connection wire and the through-hole, forming a continuous sealing layer. In this way, when the connection wire passes through the through-hole, the rubber ring is slightly compressed and tightly fits around the connection wire, forming a tight sealing layer. This not only ensures the sealing performance of the electronic compartment, but also prevents the connection wire from loosening or falling off due to vibration or external force.

[0020] In some technical solutions, optionally, the magnetostrictive sensor further includes a mounting frame; the mounting frame is disposed in the accommodating space; and the sensitive component and the signal board are disposed on the mounting frame.

[0021] In the above technical solution, the mounting frame provides a stable mounting platform for the sensitive components and the signal board, thereby ensuring that these components can be kept in the correct position, thereby helping to improve stability.

[0022] In some technical solutions, optionally, the magnetostrictive sensor further includes an end head; the end head is arranged at an end of the measuring rod away from the electronic compartment to close the measuring rod.

[0023] In practical applications, the measuring rod and the end head form a complete, sealed structure, which can prevent external impurities from entering the interior of the measuring rod, thereby helping to improve the reliability and service life of the entire magnetostrictive sensor.

[0024] Additional aspects and advantages of the present application will become apparent in the following description or may be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0026] Figure 1 FIG1 shows one of the structural schematic diagrams of the magnetostrictive sensor in the embodiment of the present application;

[0027] Figure 2 FIG2 shows a second structural diagram of a magnetostrictive sensor in an embodiment of the present application;

[0028] Figure 3 FIG3 shows a third structural diagram of a magnetostrictive sensor in an embodiment of the present application.

[0029] in, Figure 1 、 Figure 2 and Figure 3 The corresponding relationship between the reference numerals and component names is as follows:

[0030] 100-electronic compartment; 110-threading hole; 120-base; 121-connecting flange; 122-threaded hole; 123-screw; 124-sealing groove; 130-upper cover; 140-accommodation space; 150-first sealing ring; 200-sensor body; 210-sensitive component; 220-signal board; 300-connecting wires; 400-measuring rod; 500-position sensing element; 600-magnetic ring; 610-magnetic core; 710-adapter; 711-through hole; 720-tightening nut; 730-second sealing ring; 740-tightening gasket; 800-mounting bracket; 900-end. DETAILED DESCRIPTION

[0031] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present application and the features therein can be combined with each other in the absence of conflict.

[0032] In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present application is not limited to the specific embodiments disclosed below.

[0033] The following combination Figures 1 to 3 , the magnetostrictive sensor provided in the embodiment of the present application is described in detail through specific embodiments and their application scenarios.

[0034] Reference Figure 1 、 Figure 2 and Figure 3 In an embodiment of the present application, a magnetostrictive sensor is provided, the structure of which includes: an electronic compartment 100, a sensor body 200, a connecting wire 300, a measuring rod 400, a position sensing element 500 and a magnetic ring 600.

[0035] Specifically, the electronics compartment 100 has a wire hole 110 on its sidewall. The electronics compartment 100 includes a base 120 and a top cover 130. The base 120 is provided with a connecting flange 121. The top cover 130 and the connecting flange 121 are connected to form a storage space 140. The wire hole 110 communicates with the storage space 140. The sensor body 200 is disposed within the storage space 140 and includes a sensitive component 210 and a signal board 220. The connecting wire 300 is routed through the wire hole 110 and connected to the sensor body 200. The measuring rod 400 is disposed below the electronics compartment 100 (i.e., on the side away from the top cover 130). The position sensing element 500 is disposed within the measuring rod 400 and connected to the sensitive component 210. A magnetic ring 600 is disposed outside the measuring rod 400 and contains a magnetic core 610.

[0036] More specifically, the magnetic core 610 is used to transmit the magnetic signal to the position sensing element 500; the position sensing element 500 is used to sense the position of the magnetic core 610 and output the sensing signal. When the magnetic ring 600 moves on the measuring rod 400, the position sensing element 500 will sense the position change of the magnetic core 610 in the magnetic ring 600, thereby outputting the corresponding sensing signal; the sensitive component 210 is used to receive the sensing signal and convert it into a position signal, and the signal board 220 is used to process the position signal and output it.

[0037] In the above embodiment, the electronic compartment 100 includes a base 120 and a top cover 130. The base 120 and the top cover 130 are fixed together by a connecting flange 121 to form an enclosed accommodating space 140, thereby achieving the installation, storage, and sealing of the sensor body 200. This fully enclosed structure makes the sensor more robust and pressure-resistant, with a protection level of IP68 or above, thereby ensuring that the magnetostrictive sensor proposed in this embodiment has high stability. At the same time, the threading hole 110 is provided on the side wall of the electronic compartment 100, that is, it extends from the side to avoid being affected by overhead obstacles during installation. This flat structure makes the entire sensor structure more compact, thereby improving installation flexibility. The combination of these two makes the magnetostrictive sensor proposed in the above embodiment compact and easy to install, making it more suitable for use in space-constrained environments.

[0038] In practical applications, the measuring rod 400 is welded to the base 120 .

[0039] In the above embodiment, the connecting flange 121 is disposed on the outer edge of the side of the base 120 away from the upper cover 130 and is capable of receiving the upper cover 130. A first sealing ring 150 is provided between the upper cover 130 and the base 120. In this embodiment, the connecting flange 121 receives the upper cover 130, allowing the upper cover to be stably placed on the base 120, thereby improving not only the sealing performance of the electronic compartment 100 but also the structural strength of the electronic compartment 100. Furthermore, a first sealing ring 150 is provided between the base 120 and the upper cover 130 to prevent external debris such as dust and moisture from entering the electronic compartment 100, thereby protecting the sensor body 200 within the electronic compartment 100 from damage and improving the measurement accuracy and reliability of the magnetostrictive sensor.

[0040] Specifically, the connecting flange 121 and the base 120 form a stepped structure, which facilitates receiving the upper cover 130 .

[0041] In some embodiments, a plurality of threaded holes 122 are provided along the circumference of the connecting flange 121. The upper cover 130 and the connecting flange 121 are integrally connected by a plurality of screws 123 inserted into the threaded holes 122. The connection method of threaded holes 122 and screws 123 simplifies the structure of the magnetostrictive sensor, making it easier to manufacture and install. Furthermore, this connection method offers high reliability, can withstand significant vibration and shock, and ensures stable operation of the sensor even in harsh environments. Furthermore, when maintenance or replacement is necessary, the upper cover 130 can be easily opened by simply loosening the screws 123, eliminating the need for complex disassembly.

[0042] It is understood that in actual applications, the number of threaded holes 122 and screws 123 can be determined based on the size of the electronic compartment 100 and the required structural strength, and this embodiment is not limited thereto. For example, to ensure the firmness and uniformity of the connection, the number of threaded holes 122 and screws 123 can be appropriately increased.

[0043] In some embodiments, a sealing groove 124 is provided on the outer side of the base 120, and the first sealing ring 150 is embedded in the sealing groove 124. This helps to enhance the sealing performance of the electronics compartment 100, thereby ensuring the long-term stable operation of the magnetostrictive sensor. At the same time, the design of the sealing groove 124 makes the installation process of the first sealing ring 150 simpler and more intuitive, thereby reducing the installation difficulty.

[0044] Exemplarily, the first sealing ring 150 is an O-ring.

[0045] Reference Figure 1 and Figure 3In some embodiments, the magnetostrictive sensor further includes an adapter 710 and a compression nut 720. Specifically, the adapter 710 is positioned within the wire hole 110 and includes a through-hole 711 communicating with the through-hole 110 to allow the connection wire 300 to pass smoothly through the electronics compartment 100. The compression nut 720 is connected to the adapter 710 and is located at the end of the through-hole 711 away from the electronics compartment 100 to secure and seal the connection wire 300.

[0046] In the above embodiment, by providing the adapter 710, seamless docking is achieved, which helps to improve the stability of the structure; at the same time, the clamping nut 720 and the adapter 710 are tightly connected. When the clamping nut 720 is tightened, it can also effectively prevent foreign debris from entering the interior of the electronic compartment 100 through the gap between the connecting wire 300 and the wire hole 110, thereby helping to improve the stability of the magnetostrictive sensor.

[0047] Exemplarily, the adapter 710 and the electronic compartment 100 are fixed by welding.

[0048] In practical applications, the magnetostrictive sensor further includes a second sealing ring 730. The second sealing ring 730 is disposed in the through hole 711. In this way, the sealing performance can be further improved.

[0049] Exemplarily, the second sealing ring 730 is a rubber ring. Rubber materials have excellent elasticity and resilience, and can tightly fit the gap between the connection cable 300 and the through-hole 711, forming a continuous sealing layer. Thus, when the connection cable 300 passes through the through-hole 711, the rubber ring is slightly compressed and tightly fits around the connection cable 300, forming a tight sealing layer. This not only ensures the sealing performance of the electronic compartment 100, but also prevents the connection cable 300 from loosening or falling off due to vibration or external forces.

[0050] In some embodiments, the magnetostrictive sensor further includes a compression washer 740. The compression washer 740 is disposed between the compression nut 720 and the second sealing ring 730. This prevents the compression nut 720 from squeezing the connection wire 300 during the tightening process, thereby reducing the risk of wear and damage.

[0051] In some embodiments, the magnetostrictive sensor further includes a mounting bracket 800. The mounting bracket 800 is disposed within the accommodating space 140, and the sensitive component 210 and the signal board 220 are both disposed on the mounting bracket 800. The mounting bracket 800 provides a stable mounting platform for the sensitive component 210 and the signal board 220, thereby ensuring that these components remain in the correct position, thereby helping to improve stability.

[0052] In some embodiments, the measuring rod 400 is a cylindrical structure, and the magnetostrictive sensor further includes an end head 900. The end head 900 is disposed at an end of the measuring rod 400 away from the electronic compartment 100 to seal the measuring rod 400.

[0053] In the above embodiment, the measuring rod 400 and the end head 900 form a complete and sealed structure, thereby preventing foreign matter from entering the interior of the measuring rod 400, thereby helping to improve the reliability and service life of the entire magnetostrictive sensor.

[0054] For example, the end cap 900 may be fixed to the measuring rod 400 by welding.

[0055] It should be clarified that in the claims, specification and drawings of this application, the term "plurality" refers to two or more. Unless otherwise clearly defined, the orientation or positional relationship indicated by the terms "upper" and "lower" is based on the orientation or positional relationship shown in the drawings. It is only for the purpose of more conveniently describing this application and making the description process simpler, and is not intended to indicate or imply that the device or element referred to must have the specific orientation described, be constructed and operated in a specific orientation. Therefore, these descriptions cannot be understood as limitations on this application. The terms "connect", "install", "fix" and the like should be understood in a broad sense. For example, "connection" can be a fixed connection between multiple objects, or a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects, or an indirect connection between multiple objects through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood based on the specific circumstances of the above data.

[0056] In the claims, specification, and drawings of this application, the terms "one embodiment," "some embodiments," "a specific embodiment," and the like mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of this application. In the claims, specification, and drawings of this application, 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 may be combined in any suitable manner in any one or more embodiments or examples.

[0057] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A magnetostrictive sensor, characterized in that: include: An electronic compartment, wherein a threading hole is provided on the side wall of the electronic compartment; the electronic compartment comprises a base and an upper cover, the base is provided with a connecting flange, and the upper cover and the connecting flange are connected to form an accommodating space; A sensor body is disposed in the accommodating space, the sensor body comprising a sensitive component and a signal board, the sensitive component and the signal board being connected; A connecting wire is passed through the wire threading hole and connected to the sensor body; A measuring rod is arranged below the electronic compartment; A position sensing element is provided in the measuring rod and is connected to the sensitive component; A magnetic ring is passed through the measuring rod, and a magnetic core is built into the magnetic ring; The position sensing element is used to sense the position of the magnetic ring and output a sensing signal, the sensitive component is used to receive the sensing signal and convert it into a position signal, and the signal board is used to process the position signal and output it.

2. The magnetostrictive sensor according to claim 1, wherein The connecting flange is arranged on the outer edge of the side of the base away from the upper cover and can support the upper cover; a first sealing ring is provided between the upper cover and the base.

3. The magnetostrictive sensor according to claim 2, wherein: A plurality of threaded holes are provided along the circumferential side of the connecting flange, and the upper cover and the connecting flange are connected by a plurality of screws passing through the threaded holes.

4. The magnetostrictive sensor according to claim 2, wherein: A sealing groove is provided on the outer side of the base; the first sealing ring is embedded in the sealing groove.

5. The magnetostrictive sensor according to any one of claims 1 to 4, characterized in that: Also includes: An adapter seat, the adapter seat is arranged at the threading hole and is provided with a through hole communicating with the threading hole; A compression nut is connected to the adapter and is located at an end of the through hole away from the electronic compartment to fasten and seal the connecting wire.

6. The magnetostrictive sensor according to claim 5, characterized in that It also includes a second sealing ring; the second sealing ring is arranged in the through hole.

7. The magnetostrictive sensor according to claim 6, characterized in that It also includes a compression gasket; the compression gasket is located between the compression nut and the second sealing ring.

8. The magnetostrictive sensor according to claim 6 or 7, characterized in that: The second sealing ring is a rubber ring.

9. The magnetostrictive sensor according to any one of claims 1 to 4, characterized in that: It also includes a mounting frame; the mounting frame is arranged in the accommodating space; the sensitive component and the signal board are arranged on the mounting frame.

10. The magnetostrictive sensor according to any one of claims 1 to 4, characterized in that: It also includes an end head; the end head is arranged at one end of the measuring rod away from the electronic compartment to close the measuring rod.

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