A protective device for a radiation-resistant high-temperature vibration sensor

Abstract

The utility model relates to a kind of protective devices of radiation-resistant high-temperature vibration sensor, belong to vibration sensor protection technical field.The protective device of the radiation-resistant high-temperature vibration sensor, comprising: threaded mounting seat and sealing mechanism, the surface of the threaded mounting seat is threadedly connected with protective cover, the inside of the protective cover is equipped with ring cavity;The sealing mechanism includes annular air bag adhered to the inside of ring cavity, the surface of the annular air bag is fixedly connected and communicated with the piston cylinder fixedly connected with protective cover;When vibration sensor needs to connect protective device, initial dry ring air bag is attached to the inside of ring cavity, avoid interference line to set, when protective cover is connected with threaded mounting seat, the gas in piston cylinder is compressed by linkage connecting rod, annular air bag is flexibly expanded and sealed line and ring cavity gap, realize sensor and external environment isolation, improve the radiation resistance and high-temperature performance of device.

Description

Technical Field

[0001] This utility model relates to the field of vibration sensor protection technology, and in particular to a protective device for a radiation-resistant and high-temperature-resistant vibration sensor. Background Technology

[0002] A vibration sensor is a measuring device used to monitor the vibration state of mechanical equipment. It converts mechanical vibration into electrical signals and detects parameters such as vibration frequency, amplitude, and acceleration in real time. Currently, a protective shell is commonly used to improve its radiation resistance and high-temperature resistance.

[0003] In existing solutions, a corrosion-resistant elastic sealing ring is typically used to seal the gap between the protective housing and the sensor's external wiring. To ensure a good seal, the inner diameter of the sealing ring needs to be designed to be slightly smaller than the outer diameter of the wiring. However, this interference fit significantly increases friction when the protective housing is installed, making assembly more difficult and hindering rapid installation. Utility Model Content

[0004] Therefore, it is necessary to provide a protective device for radiation-resistant and high-temperature-resistant vibration sensors, addressing the problem of difficult installation of existing protective devices.

[0005] A protective device for a radiation-resistant and high-temperature-resistant vibration sensor includes: a threaded mounting base and a sealing mechanism, wherein a protective cover is threadedly connected to the surface of the threaded mounting base, and an annular cavity is formed on the inner side of the protective cover.

[0006] In one embodiment, the sealing mechanism includes an annular airbag bonded to the inside of the annular cavity, the surface of the annular airbag being fixedly connected to and communicating with a piston cylinder fixedly connected to a protective cover, a piston block being slidably connected inside the piston cylinder, and a connecting rod being fixedly connected to the bottom of the piston block and contacting a threaded mounting seat.

[0007] In one embodiment, the surface of the annular airbag is provided with uniformly distributed spacer holes that are not connected to the interior of the annular airbag, and the spacer holes are staggered with the piston cylinder.

[0008] In one embodiment, the piston cylinder, piston block, and connecting rod are all used in combination and there are four of them. The four piston cylinders are arranged in a ring around the axis of the annular airbag.

[0009] In one embodiment, a spring is provided between the piston cylinder and the piston block, and the spring is in a compressed state.

[0010] In one embodiment, the inner diameter of the spring is larger than the inner diameter of the piston cylinder opening, and the outer diameter of the spring is smaller than the diameter of the piston block.

[0011] In one embodiment, a ball bearing is embedded in the bottom of the connecting rod, and the lower surface of the ball bearing contacts the threaded mounting seat.

[0012] In one embodiment, a shielding layer is provided on the inner side of both the threaded mounting base and the protective cover, and the shielding layer is a barium sulfate material component.

[0013] In one embodiment, a heat insulation layer is embedded on the outer side of both the threaded mounting base and the protective cover, and the heat insulation layer is an aerogel material component.

[0014] Beneficial effects The aforementioned protective device for radiation-resistant and high-temperature-resistant vibration sensors, when the vibration sensor needs to be connected to the protective device, initially deflated annular airbag fits against the inner side of the annular cavity to avoid interference with the wiring. When the protective cover is connected to the threaded mounting base, the gas in the piston cylinder is compressed through the linkage connecting rod, causing the annular airbag to flexibly expand and seal the gap between the wiring and the annular cavity, thereby isolating the sensor from the external environment, improving the radiation resistance and high-temperature performance of the device, and when the wiring bends and compresses the annular airbag, its elastic deformation can compensate for the gap displacement, further enhancing the protective effect. The spring pushes the piston block away from the annular airbag, causing it to contract actively and reducing the difficulty of disassembling the vibration sensor circuit. At the same time, the piston block and connecting rod apply a thrust away from the protective cover to the threaded mounting seat, increasing the thread friction to reduce the risk of loosening, thereby improving the operational stability of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a cross-sectional view of the overall structure of this utility model; Figure 3 This is a schematic diagram of the sealing mechanism in this utility model; Figure 4 This is a partial exploded view of the sealing mechanism in this utility model.

[0017] Figure label: 100. Threaded mounting base; 200. Protective cover; 210. Annular cavity; 300. Sealing mechanism; 310. Annular airbag; 311. Spacing hole; 320. Piston cylinder; 330. Piston block; 340. Connecting rod; 350. Spring; 360. Ball bearing; 400. Shielding layer; 500. Heat insulation layer. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0019] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this specification are for illustrative purposes only and do not represent the only possible implementation.

[0020] 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0021] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0022] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this specification belongs. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0023] The following is combined with Figures 1-4 This invention describes the protective device for a radiation-resistant and high-temperature-resistant vibration sensor.

[0024] In one embodiment, a protective device for a radiation-resistant and high-temperature-resistant vibration sensor includes: a threaded mounting base 100 and a sealing mechanism 300. A protective cover 200 is threadedly connected to the surface of the threaded mounting base 100, and an annular cavity 210 is formed on the inner side of the protective cover 200. A shielding layer 400 is provided on the inner side of both the threaded mounting base 100 and the protective cover 200. The shielding layer 400 is made of barium sulfate material, which can improve the overall anti-shielding performance of the protective device. A heat insulation layer 500 is embedded on the outer side of both the threaded mounting base 100 and the protective cover 200. The heat insulation layer 500 is made of aerogel material. The heat insulation design of aerogel achieves an ultra-low thermal conductivity through a triple mechanism of inhibiting gas convection, extending the solid heat conduction path, and radiation shielding. It also has extreme temperature stability and resistance to thermal stress damage. Combined with mechanical reinforcement design, it improves mechanical strength while maintaining the advantage of lightweight, effectively reducing the system load. The threaded mounting base 100 and the protective cover 200 have mounting holes on their offset surfaces. The installer can pass the bolt through the mounting holes by means including but not limited to bolt connection, and then fix the bolt, along with the protective device and the vibration sensor, to the corresponding position of the object being measured. The vibration sensor is fixedly connected to the inner bottom wall of the threaded mounting base 100 by means including but not limited to bolt connection.

[0025] like Figure 3 and Figure 4As shown, the sealing mechanism 300 includes an annular airbag 310 bonded to the inside of the annular cavity 210. A piston cylinder 320, which is fixedly connected to and communicates with the surface of the annular airbag 310 and is fixedly connected to the protective cover 200, is slidably connected to the inside of the piston cylinder 320. A connecting rod 340, which contacts the threaded mounting seat 100, is fixedly connected to the bottom of the piston block 330. The surface of the annular airbag 310 has evenly distributed spacer holes 311 that do not communicate with the inside of the annular airbag 310. The spacer holes 311 are connected to the piston cylinder 320. The staggered distribution of the piston cylinders 320 and piston block 330 provides space for the expansion of the annular airbag 310, making its operation more stable within the gap between the annular cavity 210 and the vibration sensor wiring. Four piston cylinders 320, four piston blocks 330, and four connecting rods 340 are used in combination, arranged in a ring around the axis of the annular airbag 310, which increases the expansion degree of the annular airbag 310. A spring 350 is installed between the piston cylinders 320 and the piston block 330, and the spring 350 is compressed. In this state, when the protective cover 200 is away from the threaded mounting base 100, the spring 350 can actively deflate and contract the annular airbag 310 by pushing the piston block 330 away from the annular airbag 310. This effectively reduces the difficulty of removing the vibration sensor wiring from the inside of the protective cover 200, making the installation of the protective device easier. Furthermore, the spring 350 can also apply a thrust away from the protective cover 200 to the threaded mounting base 100 via the piston block 330 and the connecting rod 340, which can increase the thread... The threaded friction between the mounting base 100 and the protective cover 200 reduces the probability of the protective cover 200 loosening during operation, thereby improving the overall operational stability of the protective device; the inner diameter of the spring 350 is larger than the inner diameter of the opening of the piston cylinder 320, and the outer diameter of the spring 350 is smaller than the diameter of the piston block 330; a ball bearing 360 is embedded in the bottom of the connecting rod 340, and the lower surface of the ball bearing 360 contacts the threaded mounting base 100, which reduces the resistance of the connecting rod 340 sliding on the top of the threaded mounting base 100.

[0026] Working principle: When the vibration sensor needs to be connected to the protective device, firstly, the vibration sensor's wiring is threaded through the inner side of the protective cover 200. During this process, the annular airbag 310 deflates and fits snugly against the inner side of the annular cavity 210, effectively reducing the difficulty of threading the vibration sensor's wiring. Then, the vibration sensor is installed on the inner bottom wall of the threaded mounting base 100. Next, the protective cover 200 is screwed onto the threaded mounting base 100. As the protective cover 200 moves down along the threads of the threaded mounting base 100, the connecting rod 340 contacts the top of the threaded mounting base 100 in advance. The connecting rod 340 blocks the piston block 330 from moving down. At this time, the piston block 330... As the piston cylinder 320 gradually moves upward, the air inside the piston cylinder 320 is propelled into the annular airbag 310. At this time, the annular airbag 310 gradually expands towards the vibration sensor circuit along the inside of the annular cavity 210, so that the annular airbag 310 flexibly seals the gap between the annular cavity 210 and the vibration sensor circuit. This not only isolates the vibration sensor from the external environment to improve the overall radiation resistance and high temperature resistance of the protective device, but also allows the annular airbag 310 to elastically compensate for and block the gap caused by the movement of the vibration sensor circuit when the vibration sensor circuit bends and compresses it, further improving the protection effect on the vibration sensor.

[0027] It should be noted that the vibration sensors mentioned above are devices with relatively mature existing technology. The specific model can be selected according to actual needs. The vibration sensor can be powered by a built-in power supply or by AC power. The specific power supply method should be selected according to the situation, and will not be elaborated here.

[0028] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0029] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A protective device for a radiation-resistant and high-temperature-resistant vibration sensor, characterized in that, include: A threaded mounting base (100) has a protective cover (200) threadedly connected to its surface, and an annular cavity (210) is formed on the inner side of the protective cover (200). A sealing mechanism (300) includes an annular airbag (310) bonded to the inside of an annular cavity (210). The surface of the annular airbag (310) is fixedly connected to and communicates with a piston cylinder (320) fixedly connected to a protective cover (200). A piston block (330) is slidably connected inside the piston cylinder (320). A connecting rod (340) that contacts a threaded mounting seat (100) is fixedly connected to the bottom of the piston block (330).

2. The protective device for the radiation-resistant and high-temperature-resistant vibration sensor according to claim 1, characterized in that, The surface of the annular airbag (310) is provided with evenly distributed spacer holes (311) that are not connected to the interior of the annular airbag (310), and the spacer holes (311) are staggered with the piston cylinder (320).

3. The protective device for the radiation-resistant and high-temperature-resistant vibration sensor according to claim 1, characterized in that, The piston cylinder (320), piston block (330) and connecting rod (340) are all used together and there are four of them. The four piston cylinders (320) are arranged in a ring around the axis of the annular airbag (310).

4. The protective device for the radiation-resistant and high-temperature-resistant vibration sensor according to claim 1, characterized in that, A spring (350) is provided between the piston cylinder (320) and the piston block (330), and the spring (350) is in a compressed state.

5. The protective device for the radiation-resistant and high-temperature-resistant vibration sensor according to claim 4, characterized in that, The inner diameter of the spring (350) is greater than the inner diameter of the opening of the piston cylinder (320), and the outer diameter of the spring (350) is smaller than the diameter of the piston block (330).

6. The protective device for the radiation-resistant and high-temperature-resistant vibration sensor according to claim 1, characterized in that, A ball bearing (360) is embedded in the bottom of the connecting rod (340), and the lower surface of the ball bearing (360) contacts the threaded mounting seat (100).

7. The protective device for the radiation-resistant and high-temperature-resistant vibration sensor according to claim 1, characterized in that, The inner sides of both the threaded mounting base (100) and the protective cover (200) are provided with a shielding layer (400), which is a barium sulfate material component.

8. The protective device for the radiation-resistant and high-temperature-resistant vibration sensor according to claim 1, characterized in that, The outer sides of both the threaded mounting base (100) and the protective cover (200) are fitted with a heat insulation layer (500), which is an aerogel material component.

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