Speed measurement sensor of intelligent monitoring protection instrument

Abstract

The utility model discloses a speed measurement sensor for a protection instrument, belongs to the technical field of instruments and meters, and particularly relates to an intelligent monitoring speed measurement sensor for the protection instrument, which comprises a measurement screw rod, a wire outlet cap and a three-core shielding cable, the head part of the measuring screw rod is closed, the measuring screw rod is formed by adopting an integrated structure, the wire outlet cap is in threaded connection with the tail part of the measuring screw rod, and the three-core shielding cable is arranged in the measuring screw rod, penetrates through the wire outlet cap, is led out to the outside and is connected with an external circuit; according to the utility model, the design mechanism of the speed measurement sensor is changed, and the integrated measurement screw is adopted, so that the overall sealing effect of the sensor is more excellent, the performance of the sensor is not influenced by the non-magnetic stainless steel metal material through testing, the strength of the speed measurement sensor is increased, and the overall performance of the product is improved.

Description

Technical Field

[0001] The utility model discloses a speed sensor for a protector, belongs to the technical field of instruments and meters, and particularly relates to a speed sensor for an intelligent monitoring protector. Background Art

[0002] The primary function of intelligent monitoring and protection devices is to monitor the vibration and speed of rotating machinery, ensuring its safe and reliable operation. Used in conjunction with eddy current sensors, these devices can monitor the vibration amplitude and speed of rotating machinery in real time, ensuring that the machinery remains within normal operating ranges. If an anomaly is detected, the device immediately issues an alarm and, through a standard current output, interfaces with other systems to initiate appropriate protective measures.12

[0003] The intelligent monitoring and protection instrument has a variety of functions and technical indicators, including vibration amplitude monitoring, alarm delay adjustment, power-off detection, etc. It can monitor the vibration amplitude of rotating machinery with a speed of 600 to 60,000 rpm, has an alarm delay adjustment range of 1 to 60 seconds, and will automatically return to the operating mode after one minute without pressing the operation key. In addition, it also has power-on and power-off detection functions to ensure that timely measures can be taken in the event of power failure or abnormal conditions. The application scenarios of the intelligent monitoring and protection instrument are very wide, mainly used for speed measurement and reversal protection of rotating machinery such as power plant turbines, industrial steam turbines, water pumps, fans, etc. It can be installed in various important equipment and systems to ensure its safety and stability during operation.

[0004] The speed sensor uses SMR sensitive elements and is triggered by a steel magnetic conductor. It has the characteristics of wide frequency response, good stability, and strong anti-interference ability. It has an amplification shaping and protection circuit inside, and outputs a square wave with stable amplitude, which can realize long-distance signal transmission. It is mainly used for measuring speed and angular displacement. In the existing technology, the speed sensor structure of the intelligent monitoring and protection instrument adopts a metal screw (such as Figures 1 to 2 As shown in the figure, the head adopts a PPS protective cap to protect the internal chip circuit. Since the protective cap is relatively fragile, it is easy to deform or break due to improper operation of the gears during on-site use. In the case of a relatively harsh environment, oil, sewage and vapor will invade the shell and cause damage to the internal chip. Utility Model Content

[0005] The purpose of the utility model is to provide an intelligent monitoring and protection instrument speed sensor to solve the above-mentioned problems.

[0006] Technical solution: A speed sensor for an intelligent monitoring and protection device, comprising: a measuring screw, a wire cap, and a three-core shielded cable;

[0007] The head of the measuring screw is closed, and the measuring screw is formed with an integrated structure. The wire outlet cap is screwed to the tail of the measuring screw. The three-core shielded cable is arranged in the measuring screw and passes through the wire outlet cap to be led to the outside and connected to the external circuit.

[0008] In a further embodiment, threaded threads are provided on the outer circumferential surface of the measuring screw, and a mounting nut is threadedly connected to the outer side of the measuring screw.

[0009] In a further embodiment, the measuring screw has an amplification shaping and protection circuit inside.

[0010] In a further embodiment, a wrench flat is provided on the outer surface of the tail of the measuring screw, and the wrench flat is located between the tail end and the thread of the measuring screw.

[0011] In a further embodiment, the measuring screw is made of non-magnetic stainless steel metal material.

[0012] Beneficial effect: The screw of the speed sensor of the utility model is made of non-magnetic stainless steel metal. The screw adopts an integrated design, eliminates the protective cap structural components, changes the design structure of the speed sensor, and adopts an integrated measuring screw to make the overall sealing effect of the sensor better. The non-magnetic stainless steel metal material has no effect on the performance of the sensor after testing, and also increases the strength of the speed sensor and improves the overall performance of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a traditional speed sensor.

[0014] Figure 2 This is a structural diagram of a traditional speed sensor.

[0015] Figure 3 This is a schematic structural diagram of the speed sensor of the present utility model.

[0016] Reference numerals: measuring screw 1, outlet cap 2, three-core shielded cable 3, screw thread 4, mounting nut 5, wrench flat 6. DETAILED DESCRIPTION

[0017] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0018] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating positions or relationships, are based on the positions or relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internal communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0020] An intelligent monitoring and protection instrument speed sensor, comprising: a measuring screw 1, a wire outlet cap 2 and a three-core shielded cable 3;

[0021] In one embodiment, Figure 3 As shown, the head of the measuring screw 1 is closed, the measuring screw 1 is formed with an integrated structure, the wire cap 2 is screwed to the tail of the measuring screw 1, and the three-core shielded cable 3 is arranged in the measuring screw 1 and passes through the wire cap 2 to be led to the outside and connected to the external circuit.

[0022] In one embodiment, Figure 3 As shown, a thread 4 is provided on the outer peripheral surface of the measuring screw 1 , and a mounting nut 5 is screwed to the outer side of the measuring screw 1 .

[0023] In one embodiment, Figure 3 As shown, the measuring screw 1 has an amplification, shaping and protection circuit inside.

[0024] In one embodiment, Figure 3 As shown, a wrench flat 6 is provided on the outer surface of the tail of the measuring screw 1 , and the wrench flat 6 is located between the tail end and the thread 4 of the measuring screw 1 .

[0025] In one embodiment, Figure 3 As shown, the measuring screw 1 is made of non-magnetic stainless steel metal material.

[0026] Working principle: The speed sensor screw is made of non-magnetic stainless steel metal. The screw adopts an integrated design, and the protective cap structural components are eliminated. The design structure of the speed sensor is changed, and the integrated measuring screw is used to make the overall sealing effect of the sensor better. The non-magnetic stainless steel metal material has no effect on the sensor performance after testing. At the same time, it also increases the strength of the speed sensor and improves the overall performance of the product.

[0027] Obviously, the above embodiments are merely examples for clarity of explanation and are not intended to limit the implementation methods. 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 enumerate all implementation methods here. Obvious variations or modifications arising therefrom remain within the scope of protection of the present invention.

Claims

1. An intelligent monitoring and protection instrument speed sensor, characterized in that: The speed sensor comprises: a measuring screw, a wire outlet cap and a three-core shielded cable; The head of the measuring screw is closed, and the measuring screw is formed with an integrated structure. The outlet cap is screwed to the tail of the measuring screw. The three-core shielded cable is arranged in the measuring screw and passes through the outlet cap to be led to the outside and connected to the external circuit.

2. The intelligent monitoring and protection instrument speed sensor according to claim 1, characterized in that: The outer peripheral surface of the measuring screw is provided with screw threads, and the outer side of the measuring screw is screwed with a mounting nut.

3. The intelligent monitoring and protection device speed sensor according to claim 1, characterized in that: The measuring screw rod is provided with an amplifying, shaping and protecting circuit.

4. The intelligent monitoring and protection instrument speed sensor according to claim 2, characterized in that: The outer surface of the tail of the measuring screw is provided with a wrench flat surface, and the wrench flat surface is located between the tail end and the thread of the measuring screw.

5. The intelligent monitoring and protection instrument speed sensor according to claim 1, characterized in that: The measuring screw is made of non-magnetic stainless steel metal material.

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