CN217930658U

CN217930658U - Modular high-precision pressure sensor

Info

Publication number: CN217930658U
Application number: CN202222249538.9U
Authority: CN
Inventors: 武羿廷
Original assignee: Suzhou Xuansheng Instrument Technology Co ltd
Current assignee: Suzhou Xuansheng Instrument Technology Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-11-29
Anticipated expiration: 2032-08-25

Abstract

The application discloses modularization high accuracy pressure sensor, include the screw thread tube of stainless steel texture and set up respectively in the pressure measurement module at screw thread tube both ends and advance the pressure head, wherein, pressure measurement module is including encapsulating in the sensor of base, the screw thread tube is close to the concave first mounting groove that corresponds the setting with the base that is equipped with in a side end face center of pressure measurement module, the sealed first mounting groove of inlaying of one end of base is located, the screw thread tube is close to one side end face center concave that advances the pressure head and is equipped with the second mounting groove that is used for installing into the pressure head, the second mounting groove communicates in first mounting groove through the induced pressure hole, it has the connecting rod to advance the protruding the stretching of one end that the pressure head is close to the screw thread, the connecting rod is sealed to be inlayed and is located the second mounting groove, advance to be provided with the induced pressure passageway that runs through into the pressure head in the pressure head, advance the pressure head and deviate from the one end of screw thread tube is provided with connection structure. This application simple structure is applicable to various operating modes, makes things convenient for the on-the-spot installation.

Description

Modular high-precision pressure sensor

Technical Field

The application relates to the field of high-performance and intelligent instruments and meters, in particular to a modularized high-precision pressure sensor.

Background

A pressure transmitter/sensor is a sensor-based device that converts a pressure signal into an electrical signal, and is widely used in various fields such as industry, construction, military, medical treatment, etc. since it converts pressure into visual data. The transmitter comprises a diffused silicon pressure sensor taking monocrystalline silicon as a base body, an all-welded structure adopted by the existing all-welded monocrystalline silicon pressure sensor is used for welding a monocrystalline silicon sensor part and a stainless steel pressure inlet head together, the welded sensor has poor universality, and in actual use, the situation that field inconvenient connection is caused and a crossover sub needs to be added due to the problems of installing an interface and the like exists. Accordingly, improvements are needed.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a modularization high accuracy pressure sensor to overcome not enough among the prior art.

In order to achieve the above object, the utility model provides a following technical scheme:

the embodiment of the application discloses modularization high accuracy pressure sensor, include stainless steel texture's screw thread tube and set up respectively in the pressure measurement module at screw thread tube both ends and advance the pressure head, wherein, pressure measurement module is including encapsulating in the sensor of base, the screw thread tube is close to the concave first mounting groove that corresponds the setting with the base that is equipped with in a side end face center of pressure measurement module, the sealed embedding of one end of base is located first mounting groove, the screw thread tube is close to one side end face center concave that advances the pressure head and is equipped with the second mounting groove that is used for installing into the pressure head, the second mounting groove communicates in first mounting groove through leading the pressure port, it is protruding to stretch the connecting rod to advance the one end that the pressure head is close to the screw thread tube, the connecting rod is sealed to be inlayed and is located the second mounting groove, it is provided with the induced pressure passageway that runs through into the pressure head to advance the pressure head, advance the pressure head and deviate from the one end of screw thread tube is provided with connection structure.

Furthermore, in the above modular high-precision pressure sensor, an annular boss protrudes from an opening end of the first mounting groove, and a welding step corresponding to the annular boss protrudes from an outer wall of one end of the base, which is away from the threaded pipe shell.

Further, in the above modular high precision pressure sensor, a first sealing ring is arranged between the outer wall of the base and the inner wall of the first mounting groove.

Further, in the above modular high-precision pressure sensor, an external thread is provided on the outer wall of one end of the threaded pipe shell close to the pressure measuring module.

Further, in the above modularized high-precision pressure sensor, the outer wall of the second mounting groove is provided with a jackscrew, the tail end of which abuts against the connecting rod.

Further, in the above modular high-precision pressure sensor, a second sealing ring is arranged between the outer wall of the connecting rod and the inner wall of the second mounting groove.

Further, in the above modular high-precision pressure sensor, the second sealing ring comprises at least two fluororubber sealing rings arranged in parallel.

Further, in the above modular high-precision pressure sensor, the connection structure is a threaded structure, a hoop structure or a flange structure.

Compared with the prior art, the utility model has the advantages of: this modularization high accuracy pressure sensor simple structure advances and to tear open wantonly between pressure head and the screw thread tube shell and trade, and connection structure can be for helicitic texture or staple bolt structure or flange structure etc. and applicable in multiple operating mode makes things convenient for the scene to install.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic structural diagram of a modular high-precision pressure sensor according to an embodiment of the present invention.

Fig. 2 is an exploded schematic view of a modular high-precision pressure sensor according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood as a specific case by those skilled in the art.

Exemplarily, referring to fig. 1 and 2, a modularized high-precision pressure sensor includes a threaded tube shell 1 made of stainless steel, and a pressure measuring module 2 and a pressure inlet head 3 respectively disposed at two ends of the threaded tube shell 1, wherein the pressure measuring module 2 includes a sensor (not shown) packaged on a base, a first mounting groove 11 corresponding to the base is concavely disposed in a center of a side end surface of the threaded tube shell 1 close to the pressure measuring module 2, one end of the base is hermetically embedded in the first mounting groove 11, a second mounting groove 12 for mounting the pressure inlet head 3 is concavely disposed in a center of a side end surface of the threaded tube shell 1 close to the pressure inlet head 3, the second mounting groove 12 is communicated with the first mounting groove 11 through a pressure guiding hole 13, a connecting rod 31 is convexly extended at one end of the pressure inlet head 3 close to the threaded tube shell 1, the connecting rod 31 is hermetically embedded in the second mounting groove 12, a pressure guiding passage 32 penetrating through the pressure inlet head 3 is disposed in the pressure inlet head 3, a connecting structure 33 is disposed at one end of the pressure inlet head 3 far away from the threaded tube shell 1, and the connecting structure 33 is a threaded structure, or a hoop structure or a flange structure.

In the technical scheme, the structure and the process of packaging the sensor on the base belong to the prior art, which are not repeated one by one, the pressure inlet head is fixed on a medium container or a pipeline through a connecting structure, a medium with pressure sequentially passes through a pressure guide channel, a second mounting groove, a pressure guide hole and a first mounting groove and then acts on a pressure measuring module to complete pressure test or monitoring, wherein the pressure guide channel belongs to a conventional structure, the medium with pressure can be guided into the pressure guide channel, the connecting structure can be selected according to corresponding interfaces of the medium container or the pipeline, meanwhile, various connecting structures such as a thread structure, a hoop structure, a flange structure and the like are configured, the field actual working condition is changed, the pressure guide channel can be realized by protruding connecting rods on the outer wall of the medium container or the pipeline, the modularized high-precision pressure sensor is simple in structure, the pressure inlet head and the thread tube shell can be freely disassembled and changed, the connecting structures can be thread structures, hoop structures, flange structures and the like, and can be suitable for various working conditions and convenient for field installation.

Illustratively, referring to fig. 2, an annular boss 111 protrudes from an opening end of the first mounting groove 11, and a welding step corresponding to the annular boss protrudes from an outer wall of an end of the base facing away from the threaded housing 1.

Among this technical scheme, after the base embedding first mounting groove that is packaged with the sensor, through the restriction depth of insertion of welding step, the base inserts to the welding step laminating in cyclic annular boss promptly, and the external diameter of welding step is the same with the external diameter of cyclic annular boss, then welds in succession through the laser and is fixed in the pressure measurement module in the screw thread tube, and processing technology is simple, improves production efficiency.

Illustratively, a first sealing ring 4 is arranged between the outer wall of the base and the inner wall of the first mounting groove 11.

Among this technical scheme, first sealing washer improves the leakproofness between base outer wall and the first mounting groove, avoids the medium to reveal etc. improves measurement accuracy.

Illustratively, referring to fig. 1 and 2, the outer wall of the threaded housing 1 at one end near the pressure measuring module 2 is provided with external threads 14.

Among this technical scheme, the external screw thread is used for lug connection appearance head or hesmann joint etc. convenient equipment, and the screw thread tube outer wall is protruding to stretch still conventional structures such as spacing boss for spacing installation and install sealing washer etc. additional, advance conventional structures such as clamping part that the pressure head outer wall set up the cooperation spanner.

Exemplarily, referring to fig. 1 and 2, the outer wall of the second mounting groove 12 is provided with a jackscrew 5 whose end abuts against the connecting rod 31.

Among this technical scheme, the outer wall processing of second mounting groove has the screw thread through-hole to dispose the jackscrew, be used for promoting the screw thread tube and advance the joint strength between the pressure head, prevent that the screw thread tube from with advance to drop or rotate between the pressure head.

Exemplarily, referring to fig. 1 and 2, a second sealing ring 6 is disposed between an outer wall of the connecting rod 31 and an inner wall of the second mounting groove 12.

According to the technical scheme, the annular sealing groove is concavely formed in the outer wall of the connecting rod, the second sealing ring is embedded into and protrudes out of the sealing groove, and after the connecting rod is inserted into the second mounting groove, the second sealing ring is extruded to form sealing, so that the sealing performance of the joint of the pressure inlet head and the threaded pipe shell is improved.

Exemplarily, referring to fig. 1 and 2, the second seal ring 6 includes two fluororubber seal rings disposed in parallel.

Among this technical scheme, the fluororubber seal washer of two parallel arrangement forms double seal, and fluororubber is high temperature resistant can reach 300 ℃, is not afraid of the acid-base, can also bear certain mechanical working pressure, is applicable to the occasion that requires not high to corrosion resistance, especially needs the more occasion of switching, and the jackscrew sets up in one side that two fluororubber sealing washer deviate from the screw thread tube shell, avoids jackscrew department to take place the medium and reveals, improves whole leakproofness to improve measurement accuracy.

In conclusion, the modularized high-precision pressure sensor is simple in structure, the pressure inlet head and the threaded pipe shell can be detached and replaced at will, the connecting structure can be a threaded structure, a hoop structure, a flange structure or the like, the modularized high-precision pressure sensor is applicable to various working conditions, and field installation is facilitated.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a," "8230," "8230," or "comprising" does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The foregoing is illustrative of the present disclosure and it will be appreciated by those skilled in the art that changes may be made in this embodiment without departing from the principles of the disclosure, the scope of which is defined by the appended claims.

Claims

1. The utility model provides a modularization high accuracy pressure sensor, its characterized in that, include the screw thread tube of stainless steel texture and set up respectively in the pressure measurement module at screw thread tube both ends and advance the pressure head, wherein, pressure measurement module is including encapsulating in the sensor of base, the screw thread tube is close to the concave first mounting groove that corresponds the setting with the base that is equipped with in a side terminal surface center that pressure measurement module, the sealed first mounting groove of inlaying of locating of one end of base, the screw thread tube is close to one side terminal surface center that advances the pressure head and is equipped with the second mounting groove that is used for installing into the pressure head, the second mounting groove communicates in first mounting groove through the pressure introduction hole, it has the connecting rod to advance the protruding the stretching of one end that the pressure head is close to the screw thread, the connecting rod is sealed to be inlayed and is located the second mounting groove, it is provided with the pressure introduction passageway that runs through into the pressure head to advance the pressure head, it deviates from the one end of screw thread tube is provided with connection structure.

2. The modular high-precision pressure sensor of claim 1, wherein: the opening end of the first mounting groove is convexly extended with an annular boss, and the outer wall of one end of the base, which is far away from the threaded pipe shell, is convexly extended with a welding step which is correspondingly arranged with the annular boss.

3. The modular high-precision pressure sensor of claim 1, wherein: a first sealing ring is arranged between the outer wall of the base and the inner wall of the first mounting groove.

4. The modular high-precision pressure sensor of claim 1, wherein: and an external thread is arranged on the outer wall of one end of the threaded pipe shell, which is close to the pressure measuring module.

5. The modular high-precision pressure sensor of claim 1, wherein: the outer wall of the second mounting groove is provided with a jackscrew of which the tail end is abutted to the connecting rod.

6. The modular high-precision pressure sensor of claim 1, wherein: and a second sealing ring is arranged between the outer wall of the connecting rod and the inner wall of the second mounting groove.

7. The modular high-precision pressure sensor of claim 6, wherein: the second sealing ring comprises at least two fluororubber sealing rings arranged in parallel.

8. The modular high-precision pressure sensor of claim 1, wherein: the connecting structure is a threaded structure, a hoop structure or a flange structure.