Pressure-resistant shell of LVDT (Linear Variable Differential Transformer) displacement sensor

Abstract

The utility model discloses a pressure-resistant shell of an LVDT displacement sensor, which comprises a pressure-resistant shell, a mounting piece is mounted at the front end of the pressure-resistant shell, a mounting shell is arranged in the pressure-resistant shell, the displacement sensor is inserted into a fixing sleeve, then the fixing sleeve is inserted into the mounting shell through a threaded structure of the mounting sleeve, the rear end of the fixing sleeve is contracted, and the pressure-resistant shell is formed. Therefore, the displacement sensor is extruded through the rear end of the fixing sleeve, the displacement sensor is fixed, the displacement sensor can be conveniently disassembled and assembled when needed, the connection strength between the pressure-resistant shell and the mounting shell can be remarkably enhanced through the arrangement of the pressure-resistant strip, the whole shell is more stable when bearing external pressure, deformation or damage is not prone to occurring, and the service life of the displacement sensor is prolonged. The pressure-resistant strip can uniformly disperse pressure applied externally to the whole shell, structural damage caused by overlarge local stress is avoided, the design is beneficial to prolonging the service life of the displacement sensor, and the reliability of the displacement sensor in a severe environment is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to displacement sensor pressure -resisting shell technical field, specifically for a kind of LVDT displacement sensor's pressure -resisting shell. BACKGROUND

[0002] LVDT (Linear Variable Differential Transformer) displacement sensor is a kind of high-precision linear position measuring equipment widely used in industrial automation, aerospace, automobile, building and scientific research and other fields. Its working principle is based on electromagnetic induction, the position or displacement of target object is accurately detected by measuring the inductance change between coils, LVDT is composed of a primary coil and two secondary coils, these coils are usually wound on a non-magnetic cylindrical tube. The primary coil is connected to AC power supply, and the alternating magnetic field generated in the secondary coil produces an induced voltage. When the iron core (connected with the measured object) moves inside the coil, the induced voltage in the secondary coil changes, and by measuring the change of this voltage, the position of the iron core can be accurately determined. High precision: LVDT sensor can provide very high measurement accuracy, usually up to sub-micron level. Non-contact measurement: since it uses electromagnetic induction principle, LVDT sensor does not need to directly contact the measured object, so it reduces the possibility of wear and failure. Good repeatability and stability: LVDT sensor has excellent repeatability and long-term stability, suitable for long-term continuous monitoring. Wide range of applications: from small displacement to larger travel, LVDT sensor can adapt to different measurement requirements.

[0003] The utility model discloses a kind of pressure -resisting shells of aviation LVDT displacement sensor, pressure -resisting inner tube is located in the pressure -resisting shell inside, pressure -resisting inner tube is sealed and welded with the pressure -resisting plug in the one end of pressure -resisting shell, between the other end outer wall of pressure -resisting inner tube and pressure -resisting shell is sealed and welded by the pressure -resisting end cover, so that the coil framework of aviation LVDT displacement sensor is located in the cavity between pressure -resisting inner tube and pressure -resisting shell, the iron core connecting rod of aviation LVDT displacement sensor is located in pressure -resisting inner tube inside. The pressure -resisting shell of the aviation LVDT displacement sensor improves the reliability, stability of LVDT displacement sensor used in aviation, and facilitates the mass production purpose. Not only can improve the convenience of product processing and assembly, reduce the weight of the whole shell. And increase the safety of product, while the shell manufacturing cost is very low. Most importantly, the shell can also be placed in the limited aviation actuator, but the above-mentioned device structure is relatively simple, and the pressure resistance effect is poor, and the displacement sensor cannot be effectively and conveniently installed, for this, we propose a kind of LVDT displacement sensor's pressure -resisting shell. SUMMARY

[0004] The utility model discloses a purpose at providing a kind of LVDT displacement sensor's pressure resistance shell, to solve the problem presented in above background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of LVDT displacement sensor's pressure resistance shell, including pressure resistance shell:

[0006] The front end of the pressure resistance shell is provided with a mounting piece, and the inside of the pressure resistance shell is provided with a mounting shell.

[0007] Preferably, the pressure resistance shell is made of polytetrafluoroethylene material, which improves the strength of the pressure resistance shell.

[0008] Preferably, the mounting piece is uniformly provided with multiple groups of threaded holes on the surface, and the front end of the mounting piece is provided with a mounting seat.

[0009] Preferably, six pressure resistance strips are arranged between the pressure resistance shell and the mounting shell to enhance the stability of the device.

[0010] Preferably, the outer surface of the mounting sleeve is provided with a threaded structure, and the rear end of the inside of the mounting shell is provided with a matching threaded structure, which facilitates the installation of the mounting sleeve.

[0011] Preferably, the thickness of the front side of the inside of the fixing sleeve is less than the thickness of the rear side of the inside of the fixing sleeve, and the outer surface of the fixing sleeve is provided with a cross opening, which facilitates the clamping of the displacement sensor.

[0012] Preferably, the inside of the mounting shell is provided with an anti-skid sleeve on the front side, which facilitates the fixation of the displacement sensor.

[0013] The utility model at least has the following beneficial effects:

[0014] By setting the mounting sleeve and the fixing sleeve, the displacement sensor is inserted into the fixing sleeve, and then the fixing sleeve is inserted into the mounting shell through the threaded structure of the mounting sleeve.

[0015] By setting the pressure resistance strips, the connection strength between the pressure resistance shell and the mounting shell can be significantly enhanced, making the entire shell more stable when subjected to external pressure and less likely to deform or be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model;

[0017] Figure 2 It is a disassembling structure schematic view of the utility model;

[0018] Figure 3 It is a top view sectional structure schematic view of the utility model pressure shell;

[0019] Figure 4 It is a front view sectional structure schematic view of the utility model pressure shell;

[0020] Figure 5 It is a partial sectional structure schematic view of the utility model.

[0021] In the drawing: 1, pressure shell; 2, mounting piece; 3, mounting seat; 4, mounting shell; 5, pressure strip; 6, mounting sleeve; 7, fixing sleeve; 8, anti-skid sleeve. DETAILED DESCRIPTION

[0022] The technical scheme in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model.

[0023] Please refer to Figures 1-4 The utility model provides a kind of technical scheme: a pressure shell of LVDT displacement sensor, including pressure shell 1:

[0024] Pressure shell 1 front end is equipped with mounting piece 2, pressure shell 1 inside is provided with mounting shell 4, and mounting shell 4 inside rear end is equipped with mounting sleeve 6, and mounting sleeve 6 rear end is equipped with fixing sleeve 7.

[0025] Pressure shell 1 is made of polytetrafluoroethylene material, polytetrafluoroethylene has very high chemical stability, can resist the erosion of strong acid, strong alkali and solvent, this characteristic makes pressure shell 1 still can maintain stable in harsh chemical environment, the surface of polytetrafluoroethylene is extremely smooth, and friction coefficient is extremely low, which helps to reduce the friction and wear of pressure shell 1 during use, prolongs service life, and the surface of pressure shell 1 is not easy to adhere to any substance, which helps to keep clean and prevent material from sticking under high pressure environment.

[0026] Mounting piece 2 surface is uniformly equipped with multiple groups of threaded holes, and mounting piece 2 front end is equipped with mounting seat 3, and mounting seat 3 outside is provided as threaded structure, by the threaded hole of mounting piece 2 and the threaded structure of mounting seat 3, pressure shell 1 is conveniently installed in suitable position.

[0027] Six groups of pressure-resistant strips 5 are arranged between the pressure-resistant shell 1 and the mounting shell 4, which can significantly enhance the connection strength between the pressure-resistant shell 1 and the mounting shell 4, so that the entire shell is more stable when bearing external pressure and is not easy to deform or damage.

[0028] The outer surface of the mounting sleeve 6 is provided with a threaded structure, and the inner rear end of the mounting shell 4 is provided with a matching threaded structure. The threaded connection allows the mounting sleeve 6 to be easily screwed into or out of the threaded hole inside the mounting shell 4, simplifying the installation and disassembly process and improving work efficiency.

[0029] The inner front side of the fixing sleeve 7 has a smaller thickness than the inner rear side of the fixing sleeve 7, and the outer surface of the fixing sleeve 7 is provided with a cross-shaped opening. Through the installation of the mounting sleeve 6, the fixing sleeve 7 is moved to the inside of the mounting shell 4, and then the rear end of the fixing sleeve 7 is contracted to press the displacement sensor and fix it.

[0030] The inner front side of the mounting shell 4 is provided with an anti-skid sleeve 8, which can increase the friction between the mounting shell 4 and the displacement sensor, preventing displacement or loosening due to vibration or impact. This is crucial for ensuring the accurate measurement and long-term stability of the displacement sensor. The anti-skid sleeve 8 can reduce the direct impact of external forces on the displacement sensor, thereby prolonging the service life of the displacement sensor and maintaining its performance.

[0031] Working principle: by inserting the displacement sensor into the fixing sleeve 7, and then inserting the fixing sleeve 7 into the mounting shell 4 through the threaded structure of the mounting sleeve 6, the rear end of the fixing sleeve 7 is contracted to press the displacement sensor and fix it. Then, through the threaded holes of the mounting sheet 2 and the threaded structure of the mounting seat 3, the pressure-resistant shell 1 can be easily installed in the appropriate position.

[0032] It should be noted that in this article, relational terms such as first and second are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0033] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A pressure resistant housing for an LVDT displacement sensor, characterized in that, The pressure-resistant shell (1) is provided with a mounting piece (2) at the front end, and is internally provided with a mounting shell (4), and the mounting shell (4) is internally provided with a mounting sleeve (6) at the rear end, and the mounting sleeve (6) is provided with a fixing sleeve (7) at the rear end. The pressure-resistant shell (1) is made of polytetrafluoroethylene material.

2. A pressure containment housing for an LVDT displacement sensor according to claim 1, characterised in that: The mounting piece (2) is uniformly provided with a plurality of threaded holes on the surface, and is provided with a mounting seat (3) at the front end, and the outer side of the mounting seat (3) is provided with a threaded structure.

3. A pressure containment housing for an LVDT displacement sensor according to claim 1, wherein: Six pressure-resistant strips (5) are arranged between the pressure-resistant shell (1) and the mounting shell (4).

4. A pressure containment housing for an LVDT displacement sensor according to claim 1, wherein: The outer surface of the mounting sleeve (6) is provided with a threaded structure, and the rear end of the mounting shell (4) is provided with a matching threaded structure.

5. A pressure containment housing for an LVDT displacement sensor according to claim 1, wherein: The front side of the fixing sleeve (7) is provided with a cross-shaped opening.

6. A pressure containment housing for an LVDT displacement sensor according to claim 1, wherein: The front side of the mounting shell (4) is provided with an anti-skid sleeve (8).

7. A pressure containment housing for an LVDT displacement sensor according to claim 1, wherein: ​

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