CN217084050U - High vacuum negative pressure transmitter - Google Patents
High vacuum negative pressure transmitter Download PDFInfo
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- CN217084050U CN217084050U CN202220883765.4U CN202220883765U CN217084050U CN 217084050 U CN217084050 U CN 217084050U CN 202220883765 U CN202220883765 U CN 202220883765U CN 217084050 U CN217084050 U CN 217084050U
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- mounting groove
- negative pressure
- vacuum negative
- sealing
- sensor
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Abstract
The application discloses high vacuum negative pressure changer, including advancing the pressure head and being fixed in the sensor of advancing in the pressure head through the locking ring, advance and be provided with the mounting groove and the towards oilhole of intercommunication in the pressure head, the sensor sets up in the mounting groove, the one end that the mounting groove deviates from towards the oilhole is provided with the internal thread that corresponds the setting with the locking ring, be provided with first sealing washer between the lateral wall of sensor and the inner wall of mounting groove, be provided with the second sealing washer between the bottom of sensor and the diapire of mounting groove. This application simple structure improves the holistic leakproofness of changer, reduces and reveals the problem.
Description
Technical Field
The application relates to the field of high-performance and intelligent instruments and meters, in particular to a high-vacuum negative pressure transmitter.
Background
The existing high-vacuum negative pressure transmitter adopts a side sealing mode, namely an O-shaped ring is sleeved on the sensor, but the O-shaped ring is easy to deform due to long-term negative pressure pumping and is not corrosion-resistant, and the measured medium is leaked into the sensor shell due to the problems. Improvements are needed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high vacuum negative pressure changer 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 high vacuum negative pressure changer, including advancing the pressure head and being fixed in the sensor of advancing in the pressure head through the locking ring, advance and be provided with the mounting groove and the towards oilhole of intercommunication in the pressure head, the sensor sets up in the mounting groove, the one end that the mounting groove deviates from towards the towards oilhole is provided with the internal thread that corresponds the setting with the locking ring, be provided with first sealing washer between the lateral wall of sensor and the inner wall of mounting groove, be provided with the second sealing washer between the bottom of sensor and the diapire of mounting groove.
Further, in the high vacuum negative pressure transmitter, the bottom wall of the mounting groove is concavely provided with an annular groove, the outer diameter of the groove is the same as the diameter of the mounting groove, and the bottom of the second sealing ring is embedded in the groove.
Further, in the high vacuum negative pressure transmitter, the second sealing ring is of an annular structure, an annular sealing boss protrudes from the bottom of the second sealing ring, the outer diameter of the sealing boss is the same as that of the second sealing ring, and the inner diameter of the sealing boss is not larger than that of the groove.
Further, in the above high vacuum negative pressure transmitter, the thickness of the sealing boss is larger than the depth of the groove.
Further, in the high vacuum negative pressure transmitter, the second seal ring is a fluorine rubber seal ring.
Further, in the high vacuum negative pressure transmitter, a step corresponding to the second sealing ring is arranged at the bottom of the sensor.
Further, in the high vacuum negative pressure transmitter, an external thread is processed on the outer side of one end of the pressure inlet head close to the mounting groove.
Further, in the high vacuum negative pressure transmitter, a clamping part and a pressure guiding part are sequentially and convexly extended at one end of the pressure inlet head departing from the mounting groove.
Compared with the prior art, the utility model has the advantages of: the high-vacuum negative pressure transmitter is simple in structure, convenient to manufacture and install, corrosion-resistant to the second sealing ring made of the fluororubber material, and capable of enhancing the sealing performance between the sensor and the pressure inlet head by utilizing the negative pressure generated by vacuum.
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 high vacuum negative pressure transmitter according to an embodiment of the present invention.
Fig. 2 is an exploded schematic view of the high vacuum negative pressure transmitter 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 in specific cases to those skilled in the art.
Exemplarily, referring to fig. 1 and 2, a high vacuum negative pressure transmitter includes a pressure inlet head 1 and a sensor 3 fixed in the pressure inlet head 1 through a locking ring 2, wherein a mounting groove 11 and an oil flushing hole 12 are provided in the pressure inlet head 1, the sensor 3 is provided in the mounting groove 11, one end of the mounting groove 11 facing away from the oil flushing hole 12 is provided with an internal thread provided corresponding to the locking ring 2, a first sealing ring 4 is provided between a side wall of the sensor 3 and an inner wall of the mounting groove 11, and a second sealing ring 5 is provided between a bottom of the sensor 3 and a bottom wall of the mounting groove 11.
According to the technical scheme, the second sealing ring is used as a sealing ring which is mainly used when negative pressure is generated in vacuum, the negative pressure is increased along with the increase of the vacuum degree, the pressure between the sensor and the pressure inlet head is increased, the extrusion force on the second sealing ring is increased, the sealing performance is better, the first sealing ring is used for preliminarily positioning the sensor in the assembling process, the situation that the assembly is not in place due to the fact that the locking ring is inclined in the installation groove before being completely locked is avoided, and meanwhile, positive pressure overload can be prevented; the high-vacuum negative pressure transmitter is simple in structure, convenient to manufacture and install and corrosion-resistant second sealing ring, and the negative pressure generated by vacuum is utilized to enhance the sealing property between the sensor and the pressure inlet head.
Exemplarily, referring to fig. 2, the bottom wall of the mounting groove 11 is concavely provided with an annular groove 111, the outer diameter of the groove is the same as the diameter of the mounting groove 11, and the bottom of the second sealing ring 5 is embedded in the groove.
In the technical scheme, the outer diameter of the groove is the same as the diameter of the mounting groove, namely the outer wall of the groove is flush with the wall of the mounting groove, so that the interference with the second sealing ring is avoided, and the second sealing ring is damaged or cannot be mounted in place.
Exemplarily, referring to fig. 2, the second sealing ring 5 is of an annular structure, and an annular sealing boss 51 protrudes from the bottom of the second sealing ring, the outer diameter of the sealing boss 51 is the same as the outer diameter of the second sealing ring 5, and the inner diameter of the sealing boss 51 is not greater than the inner diameter of the groove.
Among this technical scheme, the cross-section department of second sealing washer and sealed boss forms L column structure, and the outer wall flushes to laminate in the cell wall of mounting groove, the inner wall laminating of sealed boss in the inside wall of recess, the inner wall laminating of second sealing washer in the outer wall of sensor, the top laminating of sealed boss in the bottom surface of sensor, form sealedly.
Illustratively, the thickness of the sealing boss 51 is greater than the depth of the groove 111.
In this technical scheme, guarantee that sealed boss and sensor have sufficient contact.
Taking a sensor with the outer diameter of phi 19 as an example, the diameter of the installation groove is also 19mm, the bottom of the installation groove is provided with a groove with the processing depth of 0.5mm, the inner diameter of 15mm and the outer diameter of 19mm, wherein the groove, the installation groove and the oil flushing hole are all coaxially arranged, the thickness corresponding to the sealing boss is 1mm, the thickness of the second sealing ring is three times that of the sealing boss, the inner diameter and the outer diameter of the sealing boss are respectively 15mm and 19mm, and the size of the first sealing ring can refer to the sealing ring parameters of the existing side sealing mode.
The second seal ring 5 is exemplarily a fluoro-rubber seal ring.
In the technical scheme, the fluororubber has excellent corrosion resistance and can be applied to various occasions.
Exemplarily, referring to fig. 1 and 2, the bottom of the sensor 3 is provided with a step 31 disposed corresponding to the second sealing ring 5.
In the technical scheme, the cross sections of the second sealing ring and the sealing boss form an L-shaped structure, the inner part of the L-shaped structure is wrapped on the side surface and the bottom surface of the step to form good sealing, the depth of the step is smaller than the thickness of the second sealing ring, and after the locking ring is locked, the step applies pressure to the second sealing ring to form sealing.
Illustratively, referring to fig. 1 and 2, an external thread is machined on the outer side of one end of the pressure inlet head 1 close to the mounting groove 11.
In the technical scheme, the external threads are used for connecting a gauge head and the like, and the operation is convenient.
Exemplarily, referring to fig. 1 and 2, a clamping portion and a pressure guiding portion are protruded from one end of the pressure inlet head 1 away from the mounting groove 11 in sequence.
Among this technical scheme, the clamping part is conventional structures such as hexagonal prism, and instrument such as cooperation opening plate uses, the equipment of being convenient for, draws the pressure portion to be the double-screw bolt structure, is convenient for be connected with the medium container, easy operation, clamping part and draw pressure portion and advance the pressure head integrated into one piece and form, guarantee bulk strength.
In conclusion, the high-vacuum negative pressure transmitter is simple in structure and convenient to manufacture and install, the second sealing ring made of the fluororubber material is corrosion-resistant, and the negative pressure generated by vacuum is utilized to enhance the sealing property between the sensor and the pressure inlet head.
It is noted that, herein, relational terms such as first and second, and the like may be 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 phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (8)
1. The utility model provides a high vacuum negative pressure changer, its characterized in that, is fixed in the sensor of advancing the pressure head including advancing the pressure head and through the locking ring, advance and be provided with the mounting groove and the towards oilhole of intercommunication in the pressure head, the sensor sets up in the mounting groove, the one end that the mounting groove deviates from towards the towards oilhole is provided with the internal thread that corresponds the setting with the locking ring, be provided with first sealing washer between the lateral wall of sensor and the inner wall of mounting groove, be provided with the second sealing washer between the bottom of sensor and the diapire of mounting groove.
2. The high vacuum negative pressure transmitter of claim 1, wherein: the bottom wall of mounting groove is equipped with annular recess in a concave way, the external diameter of recess with the diameter of mounting groove is the same, the bottom of second sealing washer is inlayed and is located in the recess.
3. The high-vacuum negative pressure transmitter of claim 2, wherein: the second sealing ring is of an annular structure, an annular sealing boss is convexly extended at the bottom of the second sealing ring, the outer diameter of the sealing boss is the same as that of the second sealing ring, and the inner diameter of the sealing boss is not larger than that of the groove.
4. The high vacuum negative pressure transmitter of claim 3, wherein: the thickness of the sealing boss is larger than the depth of the groove.
5. The high vacuum negative pressure transmitter of any one of claims 1 to 4, wherein: the second sealing ring is a fluorine rubber sealing ring.
6. The high vacuum negative pressure transmitter of claim 1, wherein: and a step corresponding to the second sealing ring is arranged at the bottom of the sensor.
7. The high vacuum negative pressure transmitter of claim 1, wherein: and an external thread is processed on the outer side of one end of the pressure inlet head, which is close to the mounting groove.
8. The high vacuum negative pressure transmitter of claim 1, wherein: the one end that advances the pressure head and deviate from the mounting groove is protruding to be stretched in proper order and is had clamping part and draw the splenium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883765.4U CN217084050U (en) | 2022-04-15 | 2022-04-15 | High vacuum negative pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220883765.4U CN217084050U (en) | 2022-04-15 | 2022-04-15 | High vacuum negative pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217084050U true CN217084050U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220883765.4U Active CN217084050U (en) | 2022-04-15 | 2022-04-15 | High vacuum negative pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217084050U (en) |
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2022
- 2022-04-15 CN CN202220883765.4U patent/CN217084050U/en active Active
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