CN215984371U

CN215984371U - Adiabatic magnetostrictive sensor

Info

Publication number: CN215984371U
Application number: CN202122413283.0U
Authority: CN
Inventors: 李海全; 李和深; 林炳柱; 周炜彬; 张华享
Original assignee: Jiangmen Runyu Sensor Technology Co ltd
Current assignee: Guangdong Runyu Sensor Co ltd
Priority date: 2021-10-08
Filing date: 2021-10-08
Publication date: 2022-03-08
Anticipated expiration: 2031-10-08

Abstract

The utility model provides an adiabatic magnetostrictive sensor, wherein a magnetostrictive sensor body is connected with the inner wall of an adiabatic shell through a fixing mechanism in the working process of the adiabatic magnetostrictive sensor. A threading hole is formed in the heat insulation shell, a power connection wire of the magnetostrictive sensor main body penetrates through the threading hole and is in sealing connection with the heat insulation shell through a sealing mechanism, and the sealing mechanism enables the magnetostrictive sensor main body and the heat insulation shell to form a closed space. The vacuum-pumping processing is carried out on the heat insulation shell through the vacuum-pumping air nozzle, so that a vacuum space is formed between the magnetostrictive sensor main body and the heat insulation shell, the magnetostrictive sensor main body works in the vacuum space, the vacuum space effectively isolates the transmission of high temperature or low temperature outside the heat insulation shell, the magnetostrictive sensor main body is prevented from working at high temperature or low temperature, the working stability of the magnetostrictive sensor main body is ensured, and the application range of the magnetostrictive sensor main body is enlarged.

Description

Adiabatic magnetostrictive sensor

Technical Field

The utility model relates to the field of product protection, in particular to a heat-insulating magnetostrictive sensor.

Background

The magnetostrictive transducer is a non-contact absolute value displacement detection device, and the basic principle is that the displacement measurement between the position where the pulse mechanical wave is generated and a magnetostrictive detection module (energy picking mechanism) is realized by measuring the propagation time of the pulse mechanical wave in a magnetostrictive wave guide wire and combining the propagation speed. The magnetostrictive transducer is widely applied to the fields of walking machinery, material forming, metallurgical machinery and the like, but the application of the magnetostrictive measurement principle is often restricted by the size of the transducer output part of the magnetostrictive transducer on mechanical equipment with a narrow installation space, the structure of the transducer output part of the magnetostrictive transducer is directly connected with the structure of an energy picking mechanism, and the energy picking mechanism is a core component of the magnetostrictive principle.

However, the magnetostrictive sensors are affected by severe environmental temperature, resulting in large performance difference of the magnetostrictive sensors, and under special high and low temperature environments, the conventional magnetostrictive sensors are difficult to stably operate for a long time, which causes the effect that the magnetostrictive sensors cannot adapt to high and low temperatures under special environments.

SUMMERY OF THE UTILITY MODEL

Accordingly, it is necessary to provide an adiabatic magnetostrictive sensor, which is not suitable for the influence of high and low temperatures in a special environment, because the conventional magnetostrictive sensor is difficult to operate stably for a long time in the special high and low temperature environment.

An adiabatic magnetostrictive sensor, comprising: the sensor comprises a heat insulation shell, a fixing mechanism, a sealing mechanism and a magnetostrictive sensor main body; the magnetostrictive sensor main body is arranged in the heat insulation shell and is connected with the inner wall of the heat insulation shell through the fixing mechanism; a threading hole is formed in the heat insulation shell, and a power connection wire of the magnetostrictive sensor main body penetrates through the threading hole and is connected with the heat insulation shell in a sealing mode through the sealing mechanism; the heat-insulating shell is provided with a vacuumizing port, and the heat-insulating shell is provided with a vacuumizing air tap at the vacuumizing port.

In one embodiment, the electric wires of the magnetostrictive sensor main body are high-temperature-resistant electric cables.

In one embodiment, the fixing mechanism comprises a measuring rod fixing component and an electronic bin fixing component; the measuring rod of the magnetostrictive sensor main body is connected with the inner wall of the heat insulation shell through the measuring rod fixing assembly, and the electronic bin of the magnetostrictive sensor main body is connected with the inner wall of the heat insulation shell through the electronic bin fixing assembly.

In one embodiment, the measuring rod fixing assembly comprises a first fixing support and a first insulating ring, the first insulating ring is connected with the insulating shell through the first fixing support, the measuring rod of the magnetostrictive sensor body is matched with the first insulating ring, and the first insulating ring is sleeved on the measuring rod of the magnetostrictive sensor body.

In one embodiment, the fixing mechanism comprises at least two measuring rod fixing assemblies, and each measuring rod fixing assembly is arranged on a measuring rod of the magnetostrictive sensor body at intervals.

In one embodiment, the first fixing bracket comprises a fixing clip and a fixing rivet, the middle area of the fixing clip is a fixing cavity, the first insulating ring is accommodated in the fixing cavity, and two sides of the opening end of the fixing clip are connected through the fixing rivet.

In one embodiment, the electronic bin fixing assembly comprises a second fixing support and a second heat insulation ring, the second heat insulation ring is connected with the heat insulation shell through the second fixing support, the electronic bin of the magnetostrictive sensor body is matched with the second heat insulation ring, and the second heat insulation ring is sleeved on the electronic bin of the magnetostrictive sensor body.

In one embodiment, the second fixing bracket comprises a fixed lower flange, a flange hoop, a hoop rivet and a plurality of fixing screws, the fixed lower flange is connected with the inner wall of the heat insulation shell, the second heat insulation ring is accommodated in the flange hoop, and the hoop rivet closes the flange hoop to squeeze and fix the second heat insulation ring; the flange hoop is connected with the fixed lower flange through the fixing screws.

In one embodiment, the sealing mechanism comprises a heat insulation sleeve, a heat insulation sealing gasket, a compression screw and high-temperature-resistant sealing glue; the heat insulation sleeve is matched with the power connection wire of the magnetostrictive sensor main body, and the heat insulation sleeve is sleeved on the power connection wire of the magnetostrictive sensor main body; the heat insulation shell is provided with a connector lug, a thread groove is formed in the connector lug, the threading hole is formed in the bottom of the thread groove, and the heat insulation sealing gasket is accommodated at the bottom of the thread groove; the compression screw is matched with the thread groove, and is inserted into the thread groove and is in threaded connection with the connector lug; the compression screw is inserted into one end of the thread groove and is abutted against the heat insulation sealing gasket; the compression screw is provided with a through hole, the through hole and the heat insulation sealing gasket are matched with the electric wire of the magnetostrictive sensor main body, and the electric wire of the magnetostrictive sensor main body sequentially penetrates through the heat insulation sealing gasket and the through hole and penetrates out of the heat insulation shell; and the high-temperature-resistant sealant is filled between the compression screw and the electric wire of the magnetostrictive sensor main body.

In one embodiment, the first insulating ring, the second insulating ring, and the insulating sleeve are aerogel blankets.

In the working process of the heat-insulating magnetostrictive sensor, the magnetostrictive sensor main body is connected with the inner wall of the heat-insulating shell through the fixing mechanism. A threading hole is formed in the heat insulation shell, a power connection wire of the magnetostrictive sensor main body penetrates through the threading hole and is in sealing connection with the heat insulation shell through a sealing mechanism, and the sealing mechanism enables the magnetostrictive sensor main body and the heat insulation shell to form a closed space. The vacuum-pumping processing is carried out on the heat insulation shell through the vacuum-pumping air nozzle, so that a vacuum space is formed between the magnetostrictive sensor main body and the heat insulation shell, the magnetostrictive sensor main body works in the vacuum space, the vacuum space effectively isolates the transmission of high temperature or low temperature outside the heat insulation shell, the magnetostrictive sensor main body is prevented from working at high temperature or low temperature, the working stability of the magnetostrictive sensor main body is ensured, and the application range of the magnetostrictive sensor main body is enlarged.

Drawings

FIG. 1 is a schematic diagram of an embodiment of an adiabatic magnetostrictive sensor;

FIG. 2 is a cross-sectional view of an insulated magnetostrictive sensor according to an embodiment;

FIG. 3 is a cross-sectional view of another portion of an insulated magnetostrictive sensor according to an embodiment.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the utility model and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the utility model.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

Referring to fig. 1 to 3 together, the present invention provides an adiabatic magnetostrictive sensor 10, where the adiabatic magnetostrictive sensor 10 includes: a thermally insulated housing 100, a securing mechanism 200, a sealing mechanism 300, and a magnetostrictive sensor body 400. A magnetostrictive sensor body 400 is disposed in the heat insulating housing 100, and the magnetostrictive sensor body 400 is attached to the inner wall of the heat insulating housing 100 by a fixing mechanism 200. The heat insulation shell 100 is provided with a threading hole 101, and a wiring 410 of the magnetostrictive sensor body 400 passes through the threading hole 101 and is hermetically connected with the heat insulation shell 100 through a sealing mechanism 300. In the present embodiment, the power connection wire 410 of the magnetostrictive sensor body 400 is a high temperature resistant cable wire. The heat insulating housing 100 is provided with a vacuum opening 102, and the heat insulating housing 100 is provided with a vacuum nozzle 110 at the vacuum opening 102.

In the operation of the above-described adiabatic magnetostrictive sensor 10, the magnetostrictive sensor body 400 is connected to the inner wall of the heat-insulating housing 100 by the fixing mechanism 200. The heat insulation shell 100 is provided with a threading hole 101, a wiring 410 of the magnetostrictive sensor body 400 passes through the threading hole 101 and is hermetically connected with the heat insulation shell 100 through a sealing mechanism 300, and the sealing mechanism 300 forms a closed space between the magnetostrictive sensor body 400 and the heat insulation shell 100. The heat insulation shell 100 is vacuumized through the vacuumizing air tap 110, so that a vacuum space is formed between the magnetostrictive sensor main body 400 and the heat insulation shell 100, the magnetostrictive sensor main body 400 works in the vacuum space, the vacuum space effectively isolates the transmission of high temperature or low temperature outside the heat insulation shell 100, the magnetostrictive sensor main body 400 is prevented from working at high temperature or low temperature, the working stability of the magnetostrictive sensor main body 400 is ensured, and the application range of the magnetostrictive sensor main body 400 is enlarged.

In order to increase the connection stability between the magnetostrictive sensor body 400 and the heat insulation housing 100, please refer to fig. 1 to 3, in which in one embodiment, the fixing mechanism 200 includes a measuring rod fixing component 210 and an electronic bin fixing component 220. The measuring rod of the magnetostrictive sensor main body 400 is connected with the inner wall of the heat insulation shell 100 through the measuring rod fixing assembly 210, and the electronic bin of the magnetostrictive sensor main body 400 is connected with the inner wall of the heat insulation shell 100 through the electronic bin fixing assembly 220. As such, the stability of the connection between the magnetostrictive sensor body 400 and the heat insulating housing 100 is increased.

In order to increase the connection stability between the measuring rod of the magnetostrictive sensor body 400 and the heat insulation housing 100, referring to fig. 1 and fig. 3 together, in one embodiment, the fixing mechanism 200 includes at least two measuring rod fixing components 210, and each measuring rod fixing component 210 is disposed on the measuring rod of the magnetostrictive sensor body 400 at intervals. Further, the interval between two adjacent fixing members 210 is 0.25 m to 0.35 m, and specifically, the interval between two adjacent fixing members 210 is 0.3 m. Further, in this embodiment, the measuring rod fixing assembly 210 includes a first fixing bracket 211 and a first insulating ring 212, the first insulating ring 212 is connected to the insulating housing 100 through the first fixing bracket 211, the measuring rod of the magnetostrictive sensor body 400 is matched with the first insulating ring 212, and the first insulating ring 212 is sleeved on the measuring rod of the magnetostrictive sensor body 400. In this embodiment, the first insulating ring 212 is aerogel felt. The aerogel felt is a flexible heat-preservation felt which is formed by compounding nano silicon dioxide or metal aerogel serving as a main body material with carbon fiber or ceramic glass fiber cotton or pre-oxidized fiber felt through a special process. The aerogel felt is characterized by low heat conductivity coefficient and certain tensile and compressive strength. Specifically, in one embodiment, the first fixing bracket 211 includes a fixing clip 213 and a fixing rivet 214, a middle region of the fixing clip 213 is a fixing cavity 201, the first insulating ring 212 is received in the fixing cavity 201, and two sides of an opening end of the fixing clip 213 are connected by the fixing rivet 214. In this manner, the stability of the connection between the spindle of the magnetostrictive sensor body 400 and the heat insulating case 100 is increased.

In order to increase the connection stability between the electronic bin of the magnetostrictive sensor body 400 and the heat insulation housing 100, please refer to fig. 1 and fig. 2 together, in one embodiment, the electronic bin fixing assembly 220 includes a second fixing bracket 221 and a second heat insulation ring 222, the second heat insulation ring 222 is connected to the heat insulation housing 100 through the second fixing bracket 221, the electronic bin of the magnetostrictive sensor body 400 is matched with the second heat insulation ring 222, and the second heat insulation ring 222 is sleeved on the electronic bin of the magnetostrictive sensor body 400. In this embodiment, the second insulating ring 222 is an aerogel blanket. Specifically, in the present embodiment, the second fixing bracket 221 includes a fixing lower flange 223, a flange hoop 224, a hoop rivet 225, and a plurality of fixing screws 226, the fixing lower flange 223 is connected to the inner wall of the heat insulation housing 100, the second heat insulation ring 222 is received in the flange hoop 224, and the hoop rivet 225 closes the flange hoop 224 to press and fix the second heat insulation ring 222. The flange anchor 224 is connected to a fixed lower flange 223 by respective set screws 226. As such, the stability of the connection between the electronic capsule of the magnetostrictive sensor body 400 and the heat insulating case 100 is increased.

To increase the hermeticity of the connection between the electrical wires 410 of the magnetostrictive sensor body 400 and the insulated housing 100, referring to fig. 1, in one embodiment, the sealing mechanism 300 includes an insulating sleeve 310, an insulating gasket 320, a compression screw 330, and a high temperature-resistant sealant 340. The heat insulation sleeve 310 is matched with the electric wire 410 of the magnetostrictive sensor body 400, and the heat insulation sleeve 310 is sleeved on the electric wire 410 of the magnetostrictive sensor body 400. In this embodiment, the insulation sleeve 310 is an aerogel blanket. The heat insulation housing 100 is provided with a connector lug 120, a thread groove 103 is arranged on the connector lug 120, a threading hole 101 is arranged at the bottom of the thread groove 103, and the heat insulation sealing gasket 320 is accommodated at the bottom of the thread groove 103. The compression screw 330 is fitted into the screw groove 103, and the compression screw 330 is inserted into the screw groove 103 and screwed with the connector lug 120. The pressing screw 330 is inserted into one end of the screw groove 103 and abuts against the heat insulating gasket 320. The hold-down screw 330 is provided with a through hole 301, both the through hole 301 and the heat insulation gasket 320 are matched with an electric wire 410 of the magnetostrictive sensor main body 400, and the electric wire 410 of the magnetostrictive sensor main body 400 sequentially passes through the heat insulation gasket 320 and the through hole 301 and penetrates out of the heat insulation shell 100. The high temperature resistant sealant 340 is filled between the compression screw 330 and the electric wire 410 of the magnetostrictive sensor body 400. In this manner, sealing mechanism 300 increases the hermeticity of the connection between electrical wiring 410 of magnetostrictive sensor body 400 and thermally insulated housing 100.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. An adiabatic magnetostrictive sensor, comprising: the sensor comprises a heat insulation shell, a fixing mechanism, a sealing mechanism and a magnetostrictive sensor main body; the magnetostrictive sensor main body is arranged in the heat insulation shell and is connected with the inner wall of the heat insulation shell through the fixing mechanism; a threading hole is formed in the heat insulation shell, and a power connection wire of the magnetostrictive sensor main body penetrates through the threading hole and is connected with the heat insulation shell in a sealing mode through the sealing mechanism; the heat-insulating shell is provided with a vacuumizing port, and the heat-insulating shell is provided with a vacuumizing air tap at the vacuumizing port.

2. An insulated magnetostrictive sensor according to claim 1, characterized in that the electrical leads of the magnetostrictive sensor body are high temperature resistant electrical leads.

3. The insulated magnetostrictive sensor according to claim 1, wherein the fixing mechanism comprises a measuring rod fixing component and an electronic bin fixing component; the measuring rod of the magnetostrictive sensor main body is connected with the inner wall of the heat insulation shell through the measuring rod fixing assembly, and the electronic bin of the magnetostrictive sensor main body is connected with the inner wall of the heat insulation shell through the electronic bin fixing assembly.

4. The thermally insulated magnetostrictive sensor according to claim 3, wherein the rod holder assembly comprises a first holder and a first insulating ring, the first insulating ring is connected to the insulating housing via the first holder, the rod of the magnetostrictive sensor body fits into the first insulating ring, and the first insulating ring is fitted over the rod of the magnetostrictive sensor body.

5. An insulated magnetostrictive sensor according to claim 4, wherein the mounting means comprises at least two of the rod mounting assemblies, the rod mounting assemblies being spaced apart on the rod of the magnetostrictive sensor body.

6. An insulated magnetostrictive sensor according to claim 5, wherein the first fixing holder comprises a fixing clip and a fixing rivet, the fixing clip has a fixing cavity in the middle region, the first insulating ring is accommodated in the fixing cavity, and the fixing clip has an open end connected at both sides by the fixing rivet.

7. The thermally insulated magnetostrictive sensor according to claim 6, wherein the electronic bin fixing assembly comprises a second fixing support and a second thermal insulation ring, the second thermal insulation ring is connected with the thermal insulation housing through the second fixing support, the electronic bin of the magnetostrictive sensor body is matched with the second thermal insulation ring, and the second thermal insulation ring is sleeved on the electronic bin of the magnetostrictive sensor body.

8. The thermally insulated magnetostrictive sensor according to claim 7, wherein the second fixing bracket comprises a lower fixing flange, a flange hoop, a hoop rivet, and a plurality of fixing screws, the lower fixing flange is connected with the inner wall of the thermal insulation housing, the second thermal insulation ring is received in the flange hoop, and the hoop rivet closes the flange hoop to press and fix the second thermal insulation ring; the flange hoop is connected with the fixed lower flange through the fixing screws.

9. The insulated magnetostrictive sensor according to claim 8, wherein the sealing mechanism comprises a heat insulating sleeve, a heat insulating gasket, a compression screw, and a high temperature resistant sealant; the heat insulation sleeve is matched with the power connection wire of the magnetostrictive sensor main body, and the heat insulation sleeve is sleeved on the power connection wire of the magnetostrictive sensor main body; the heat insulation shell is provided with a connector lug, a thread groove is formed in the connector lug, the threading hole is formed in the bottom of the thread groove, and the heat insulation sealing gasket is accommodated at the bottom of the thread groove; the compression screw is matched with the thread groove, and is inserted into the thread groove and is in threaded connection with the connector lug; the compression screw is inserted into one end of the thread groove and is abutted against the heat insulation sealing gasket; the compression screw is provided with a through hole, the through hole and the heat insulation sealing gasket are matched with the electric wire of the magnetostrictive sensor main body, and the electric wire of the magnetostrictive sensor main body sequentially penetrates through the heat insulation sealing gasket and the through hole and penetrates out of the heat insulation shell; and the high-temperature-resistant sealant is filled between the compression screw and the electric wire of the magnetostrictive sensor main body.

10. The insulated magnetostrictive sensor according to claim 9, wherein the first insulating ring, the second insulating ring, and the insulating sleeve are aerogel blankets.