CN220304726U - Pressure sensor sealing structure and pressure sensor with same - Google Patents
Pressure sensor sealing structure and pressure sensor with same Download PDFInfo
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- CN220304726U CN220304726U CN202321755993.4U CN202321755993U CN220304726U CN 220304726 U CN220304726 U CN 220304726U CN 202321755993 U CN202321755993 U CN 202321755993U CN 220304726 U CN220304726 U CN 220304726U
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- 238000007789 sealing Methods 0.000 title claims abstract description 141
- 238000004891 communication Methods 0.000 claims abstract description 4
- 238000001514 detection method Methods 0.000 claims description 7
- 238000009530 blood pressure measurement Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000002542 deteriorative effect Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The application relates to a pressure sensor sealing structure, which comprises a connecting seat and a sealing ring; the two opposite ends of the connecting seat are respectively provided with a threaded hole and a sealing hole which are coaxially arranged and mutually communicated, the aperture of the threaded hole is larger than that of the sealing hole, and the edge of the communication part between the threaded hole and the sealing hole is provided with a chamfer; the sealing washer sets up in chamfer department. The pressure sensor comprises a pressure sensor body and a pressure sensor sealing structure; one end of the pressure sensor body is provided with a first external thread and a pressure sensing diaphragm; the first external thread of the pressure sensor body is matched with the threaded hole of the connecting seat, and the sealing ring is positioned between the pressure sensing diaphragm and the connecting seat. Compare current pressure sensor, threaded connection portion and the medium direct contact that awaits measuring, sealing position are located the screw thread root, and this application can reduce pressure sensor seal structure's the medium of being surveyed and remain, prevents that the residue from going bad and influencing food safety.
Description
Technical Field
The application relates to the technical field of pressure sensors, in particular to a pressure sensor sealing structure and a pressure sensor with the same.
Background
In order to prevent the leakage caused by the inaccurate sealing during detection and verification and unstable pressure, the pressure sensor adopts a sealing structure. However, in the sealing structure of the existing pressure sensor, for example, patent document CN204142421U, the sealing structure is provided with an external thread connected with a sealed container to be tested, and a sealing ring is provided at the root of the external thread. When the pressure sensor is used for food production as a sanitary sensor, as the sealing ring is positioned at the root of the thread, the thread part positioned at the front end of the sealing ring has sanitary dead angles, the measured medium can be remained, the cleaning is difficult, and the remained medium can deteriorate for a long time to influence the food safety.
Therefore, how to reduce the residual medium to be measured in the sealing structure of the pressure sensor is a problem to be solved by those skilled in the art.
Disclosure of Invention
In order to reduce the residual measured medium of the pressure sensor sealing structure, the application provides a pressure sensor sealing structure and a pressure sensor with the same.
The utility model provides a pressure sensor sealing structure for realizing the purpose, which comprises:
a connecting seat and a sealing ring;
the connecting seat is characterized in that threaded holes and sealing holes are respectively formed in the two opposite ends of the connecting seat, the threaded holes and the sealing holes are coaxially arranged, the aperture of each threaded hole is larger than that of each sealing hole, the threaded holes are mutually communicated with the sealing holes, and chamfers are arranged at the edges of the communicated positions of the threaded holes and the sealing holes;
one end of the connecting seat provided with the sealing hole is suitable for being fixed on a sealed container to be tested;
the sealing ring is matched with the sealing hole, and the sealing ring is arranged at the chamfer angle.
In one possible implementation, the sealing ring is an O-ring.
In one possible implementation, the connection socket is cylindrical as a whole.
In order to achieve the object of the present utility model, there is provided a pressure sensor comprising:
a pressure sensor body and a pressure sensor sealing structure;
the pressure sensor comprises a pressure sensor body, a sealing ring and a pressure sensing diaphragm, wherein a first external thread is arranged at one end of the pressure sensor body, the end face of the end of the pressure sensor body, which is provided with the external thread, is provided with the pressure sensing diaphragm, and a groove matched with the sealing ring is formed at one end of the external thread, which is close to the pressure sensing diaphragm;
the first external thread of pressure sensor body with the screw hole phase-match of connecting seat, the pressure sensor body is equipped with the one end of pressure sensing diaphragm certainly the screw hole deviates from the one end screw in of sealing hole, the pressure sensing diaphragm with the one end lateral wall that the connecting seat was equipped with the sealing washer flushes, the sealing washer is located the pressure sensing diaphragm with between the connecting seat.
In one possible implementation, the pressure sensor body is further provided with a signal interface adapted to be electrically connected for communication with a detection system.
In one possible implementation, the end of the pressure sensor body facing away from the connecting seat is provided with a protruding signal interface, which is provided with a second external thread.
In one possible implementation manner, an annular protrusion is fixedly arranged on the outer side wall of the pressure sensor body, the end face of the annular protrusion is polygonal, and the annular protrusion is consistent with the central line direction of the first external thread.
In one possible implementation, the annular protrusion is disposed near the first external thread, and the annular protrusion is located at an end of the first external thread facing away from the pressure sensing diaphragm.
This application is through the connecting portion at connecting seat and sensor pressure measurement end, the chamfer inside wall sets up the sealing washer, the sealing washer is located between the internal screw thread of sealing container and the connecting seat that awaits measuring, and sealing connection is carried out through the sealing washer to connecting seat and sensor pressure measurement end, the medium that awaits measuring can't permeate, pollute and remain in threaded connection portion, compare current pressure sensor, threaded connection portion and medium direct contact that awaits measuring, the sealing position is located the screw thread root, only carry out gas seal, this application can reduce pressure sensor seal structure's the medium that awaits measuring and remain, prevent that the residue from deteriorating the food safety of influence.
Drawings
Fig. 1 shows a schematic structural diagram of a pressure sensor and a pressure sensor sealing structure according to an embodiment of the present application.
Detailed Description
Various exemplary embodiments, features and aspects of the present application will be described in detail below with reference to the accompanying drawings. In the drawings, like reference numbers indicate identical or functionally similar elements. Although various aspects of the embodiments are illustrated in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated.
It should be understood, however, that the terms "length," "width," "height," "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model or simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present utility model.
In addition, numerous specific details are set forth in the following detailed description in order to provide a better understanding of the present application. It will be understood by those skilled in the art that the present application may be practiced without some of these specific details. In some instances, methods, means, elements, and circuits have not been described in detail as not to unnecessarily obscure the present application.
Fig. 1 shows a schematic structural diagram of a pressure sensor and a pressure sensor sealing structure according to an embodiment of the present application.
According to an aspect of the present application, there is provided a pressure sensor sealing structure, comprising: a connection base 100 and a seal ring 200; the connecting seat 100 is of a hollow structure, threaded holes and sealing holes are respectively formed in the two opposite ends of the connecting seat 100, the threaded holes and the sealing holes are coaxially arranged, the aperture of each threaded hole is larger than that of each sealing hole, the threaded holes are mutually communicated with the sealing holes, and chamfers are arranged at the edges of the communicated positions of the threaded holes and the sealing holes; one end of the connecting seat 100 provided with a sealing hole is suitable for being fixed on a sealed container to be tested; the sealing ring 200 is matched with the sealing hole, and the sealing ring 200 is arranged at the chamfer.
The edge of the communicating part of the threaded hole and the sealing hole is provided with a chamfer, and the aperture of the threaded hole is larger than that of the sealing hole. This means that the inner side wall of the connection seat 100 is retracted toward the axis by a chamfer, and a threaded hole with a larger aperture is formed on one side of the chamfer, and a sealing hole with a smaller aperture is formed on the other side of the chamfer. Specifically, one end of the chamfer, which is close to the threaded hole, deviates from the axis common to the threaded hole and the sealing hole, and one end of the chamfer, which is close to the sealing hole, is close to the axis common to the threaded hole and the sealing hole. The pressure measuring end of the pressure sensor is screwed in from one end of the threaded hole, which is away from the sealing hole, until the pressure measuring end of the pressure sensor is flush with the outer side wall of one end, provided with the sealing hole, of the connecting seat 100. According to the method, the radius difference between the spiral hole and the sealing hole is realized by arranging the chamfer, so that on one hand, the screwing operation of the pressure sensor can be facilitated, and the unnecessary contact area between the pressure sensor and a medium to be measured is reduced; on the other hand, the sealing performance of the pressure sensor can be improved.
It should be noted that, since the threaded hole needs to be provided with an internal thread to ensure connection stability and increase pressure resistance, a certain thickness is required, and the sealing hole is only an opening at one end of the hollow structure of the connection seat 100, and the thickness is not required, that is, the chamfer and the sealing ring 200 are close to the opening end of the connection seat 100.
As shown in fig. 1, the pressure measuring end of the sensor is screwed into the threaded hole from the end facing away from the sealing hole until the end surface of the pressure measuring end of the sensor is flush with the outer side wall of the end, where the sealing hole is provided, of the connecting seat 100. At this time, the sealing ring 200 is located between the pressure measuring end of the sensor and the connecting seat 100, the sealing ring 200 is suitable for being matched with the pressure measuring end of the sensor, and the connecting seat 100 is in sealing connection with the pressure measuring end of the sensor through the sealing ring 200.
This application is through the junction at connecting seat 100 and sensor pressure measurement end, the chamfer inside wall sets up sealing washer 200, sealing washer 200 is located between the internal screw thread of sealed container and connecting seat 100 that awaits measuring, and connecting seat 100 and sensor pressure measurement end carry out sealing connection through sealing washer 200, the medium that awaits measuring can't permeate, pollute and remain at threaded connection portion, compare current pressure sensor, threaded connection portion and medium direct contact that awaits measuring, the sealing position is located the screw thread root, only carry out gas seal, this application can reduce pressure sensor seal structure's the medium that awaits measuring and remain, prevent that the residue from deteriorating the food safety of influence.
This application sealing hole is equipped with the chamfer with the intercommunication department of screw hole, and the chamfer carries out the aperture difference in order to realize sealing hole and screw hole with the horizontal slope of certain degree. The sealing ring 200 is obliquely arranged at the chamfer part, and compared with a connecting hole which is arranged in a straight-through way, the pressure measuring end of the pressure sensor is screwed into the connecting seat, an acting force for driving the sealing ring to rotate and an acting force for extruding downwards are given to the sealing ring, the opening end of the connecting hole, which is close to a medium to be measured, is vertical and is not limited, the sealing ring can fall off in the process of installing the pressure sensor and enter a sealed container to be measured, and the production environment of food is polluted, so that the food safety is influenced; the sealing washer slope of this application sets up, and the horizontal slope of chamfer has certain spacing bearing action to the sealing washer, and the perpendicular decurrent effort that sealed sensor applyed, decomposes into the pressing of slope decurrent thrust and perpendicular to slope inside wall, and the decurrent thrust of slope is less than perpendicular decurrent effort, and presses perpendicularly and can increase frictional force, effectively prevents the sealing washer landing. In addition, because the sealing ring is obliquely arranged and has certain elasticity, the sealing ring is gradually compressed and deformed from top to bottom in the continuous screwing process, and a certain buffering effect is realized.
Therefore, the present application can prevent the sealing ring 200 from being forced to displace in the screwing-in installation process, ensure the sealing performance of the connection between the pressure sensor and the connection seat 100, and even can prevent the sealing ring 200 from sliding down, thereby affecting the food safety.
In one possible implementation, the sealing ring 200 is matched with the inner sidewall of the chamfer, the sealing ring 200 is arranged on the inner sidewall of the chamfer, and the sealing ring 200 is positioned at one end of the chamfer close to the sealing hole, so that the sealing ring is as close to the opening end of the connecting seat 100 as possible, and dead angle and mechanism residue to be detected are reduced.
In one possible implementation, the seal ring 200 is an O-ring, and the sealing effect is stable and easy to obtain.
In one possible implementation, the seal ring 200 abuts the seal bore inner sidewall, relying on friction to maintain the relative position.
In one possible implementation, the sealing ring 200 is fixed to the inner sidewall of the connection hole, for example, by bonding, to increase connection stability.
In one possible implementation, the outer side wall of the end of the connection seat 100 provided with the sealing ring 200 is adapted to be welded with the sealed container to be tested.
In one possible implementation, the connecting seat 100 is cylindrical as a whole, the axial direction of the connecting seat 100 is consistent with that of the internal thread, the angle is smooth, the scratch is not easy to occur, and a certain protection effect is provided for an operator.
Further, the end of the cylindrical structure of the connecting seat 100, which is provided with the sealing ring 200, is provided with a round angle, and the edge of the cylindrical end is provided with a smooth curve, so that the angle is smooth and is not easy to scratch.
In one possible implementation, the cylindrical structure of the connection socket 100 is provided with a chamfer at one end of the sealing ring 200.
In one possible implementation manner, the outer side wall of one end of the connecting seat 100 provided with the sealing ring 200 is a smooth plate surface, so that the sanitary dead angle of the contact surface between the sealing structure of the pressure sensor and the medium to be measured is reduced, the medium to be measured is prevented from remaining and deteriorating, the production environment is influenced, and the food safety is further influenced.
In one possible implementation, the connection base 100 is provided with a connection hole in a penetrating manner, the connection hole includes a threaded hole and a sealing hole, the threaded hole and the sealing hole are located at two ends of the connection hole respectively, and the connection hole is integrally in a cylindrical structure with a chamfer at one end.
According to another aspect of the present application, a pressure sensor is provided that includes a pressure sensor body and a pressure sensor sealing structure; the pressure sensor comprises a pressure sensor body, a sealing ring 200, a pressure sensing diaphragm 300, a sealing ring and a sealing ring, wherein a first external thread is arranged at one end of the pressure sensor body; the first external thread of pressure sensor body matches with the internal thread of connecting seat 100, the one end that the pressure sensor body was equipped with pressure sensing diaphragm 300 is equipped with the one end screw in of internal thread from connecting seat 100, and pressure sensing diaphragm 300 flushes with the one end lateral wall that connecting seat 100 was equipped with sealing washer 200, and sealing washer 200 is located between pressure sensing diaphragm 300 and connecting seat 100.
This application adopts flat diaphragm type pressure sensor, and the pressure measurement end is equipped with pressure sensing diaphragm 300, guarantees its one end lateral wall that is equipped with sealing washer 200 with connecting seat 100, and one side that connecting seat 100 and the medium that awaits measuring contacted promptly flushes, does not have the health dead angle, can reduce and is surveyed the medium and remain, prevents that the residue from going bad to influence food safety.
In one possible implementation, the pressure measuring end of the pressure sensor body is integrally columnar, and the pressure measuring end of the pressure sensor body is sequentially provided with a first external thread, a groove matched with the sealing ring 200 and a pressure sensing diaphragm 300. The sealing ring 200 is an O-ring, the groove matched with the sealing ring 200 is an annular groove, the annular groove forms a cylindrical boss at one end of the cylindrical structure of the pressure measuring end of the pressure sensor body, and the pressure sensing diaphragm 300 is positioned on the end face of the cylindrical boss, which is away from the external thread.
In one possible implementation, the pressure sensor body is further provided with a digital display screen for displaying the detection result.
In one possible implementation, the pressure sensor body is further provided with a signal interface 400, the signal interface 400 being adapted to be electrically connected for communication with a detection system.
In one possible implementation, the end of the pressure sensor body facing away from the connection socket 100 is provided with a protruding signal interface 400, and the signal interface 400 is provided with a second external thread, so as to improve connection stability.
Further, the signal interface 400 is an aviation connector, which is cheap and easy to obtain and has stable connection.
In one possible implementation, the aerial connection is an aerial socket.
In one possible implementation, the outer side wall of the pressure sensor body is provided with a nut wall. Namely: the outer side wall of the pressure sensor body is fixedly provided with an annular protrusion 500, the outer side wall of the annular protrusion 500 is integrally formed into a hexagonal nut, and the annular protrusion 500 is consistent with the central line direction of the first external thread. The application is through setting up the annular protrusion 500 of polygon, and the staff of being convenient for applys and exert hard and connect the operation. Through setting up regular hexagon's hexagonal nut dress annular protrusion 500, use tools such as spanner to turn round the pressure sensor body during threaded connection, easy operation.
It should be noted that the annular shape in the annular protrusion means that the protrusion is disposed around the outer sidewall of the pressure sensor body, and should not be construed as limiting the shape of the protrusion.
Further, as shown in fig. 1, the annular protrusion 500 is disposed near the first external thread of the pressure measuring end of the pressure sensor, and the annular protrusion 500 is located at an end of the external thread facing away from the pressure sensing diaphragm 300. The annular protrusion 500, or the protrusion sidewall or shoulder formed by the nut wall, can abut against and limit the front end of the connection seat 100, and can be welded, thereby improving the connection stability.
In one possible implementation, the pressure sensor body is an airtight device, and the pressure sensor body includes a housing and a body located inside the housing, and the housing is a sealing device, and there is a possibility of burst generating danger in a high pressure environment. Therefore, the pressure sensor body further includes an explosion-proof plug 600, the side wall of the housing is provided with a through hole, the explosion-proof plug 600 is matched with the through hole, and the explosion-proof plug 600 is detachably connected with the housing through the through hole. By arranging the explosion-proof plug 600 and the through hole, the explosion-proof plug 600 is arranged during normal detection; the explosion-proof plug 600 is detached when the explosion risk exists, so that the explosion generated in the use process of the pressure transmitter can be effectively prevented, and the service life can be prolonged.
Further, a sealing ring 200 is arranged between the explosion-proof plug 600 and the through hole, so that the accuracy in normal detection is ensured.
In one possible implementation, the explosion-proof plug 600 mates with the through-hole, and the explosion-proof plug 600 mates with the through-hole. Pulling the explosion-proof plug 600 rightward can detach the explosion-proof plug 600 from the housing to release the pressure.
In one possible implementation, the explosion-proof plug 600 is threadably coupled to the through hole.
The embodiments of the present application have been described above, the foregoing description is exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the improvement of technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (8)
1. A pressure sensor sealing structure, comprising:
a connecting seat and a sealing ring;
the connecting seat is characterized in that threaded holes and sealing holes are respectively formed in the two opposite ends of the connecting seat, the threaded holes and the sealing holes are coaxially arranged, the aperture of each threaded hole is larger than that of each sealing hole, the threaded holes are mutually communicated with the sealing holes, and chamfers are arranged at the edges of the communicated positions of the threaded holes and the sealing holes;
one end of the connecting seat provided with the sealing hole is suitable for being fixed on a sealed container to be tested;
the sealing ring is matched with the sealing hole, and the sealing ring is arranged at the chamfer angle.
2. The pressure sensor sealing structure of claim 1, wherein the sealing ring is an O-ring.
3. The pressure sensor sealing structure of claim 1, wherein the connection base is cylindrical as a whole.
4. A pressure sensor, comprising:
a pressure sensor body and the pressure sensor sealing structure of any one of claims 1-3;
the pressure sensor comprises a pressure sensor body, a sealing ring and a pressure sensing diaphragm, wherein a first external thread is arranged at one end of the pressure sensor body, the end face of the end of the pressure sensor body, which is provided with the external thread, is provided with the pressure sensing diaphragm, and a groove matched with the sealing ring is formed at one end of the external thread, which is close to the pressure sensing diaphragm;
the first external thread of pressure sensor body with the screw hole phase-match of connecting seat, the pressure sensor body is equipped with the one end of pressure sensing diaphragm certainly the screw hole deviates from the one end screw in of sealing hole, the pressure sensing diaphragm with the one end lateral wall that the connecting seat was equipped with the sealing washer flushes, the sealing washer is located the pressure sensing diaphragm with between the connecting seat.
5. The pressure sensor of claim 4, wherein the pressure sensor body is further provided with a signal interface adapted to electrically connect with a detection system for communication.
6. The pressure sensor of claim 5, wherein an end of the pressure sensor body facing away from the connection mount is provided with a male signal interface, the signal interface being provided with a second external thread.
7. The pressure sensor of claim 4, wherein an annular protrusion is fixedly arranged on the outer side wall of the pressure sensor body, the end face of the annular protrusion is polygonal, and the annular protrusion is consistent with the central line direction of the first external thread.
8. The pressure sensor of claim 7, wherein the annular protrusion is disposed proximate the first external thread, the annular protrusion being located at an end of the first external thread facing away from the pressure sensing diaphragm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321755993.4U CN220304726U (en) | 2023-07-05 | 2023-07-05 | Pressure sensor sealing structure and pressure sensor with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321755993.4U CN220304726U (en) | 2023-07-05 | 2023-07-05 | Pressure sensor sealing structure and pressure sensor with same |
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| Publication Number | Publication Date |
|---|---|
| CN220304726U true CN220304726U (en) | 2024-01-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321755993.4U Active CN220304726U (en) | 2023-07-05 | 2023-07-05 | Pressure sensor sealing structure and pressure sensor with same |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823620A (en) * | 2024-03-04 | 2024-04-05 | 日照普惠动物营养科技有限公司 | High-precision pressure alarm |
-
2023
- 2023-07-05 CN CN202321755993.4U patent/CN220304726U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117823620A (en) * | 2024-03-04 | 2024-04-05 | 日照普惠动物营养科技有限公司 | High-precision pressure alarm |
| CN117823620B (en) * | 2024-03-04 | 2024-06-11 | 日照普惠动物营养科技有限公司 | High-precision pressure alarm |
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