CN220568314U - Pressure sensor with guide channel - Google Patents
Pressure sensor with guide channel Download PDFInfo
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- CN220568314U CN220568314U CN202322273018.6U CN202322273018U CN220568314U CN 220568314 U CN220568314 U CN 220568314U CN 202322273018 U CN202322273018 U CN 202322273018U CN 220568314 U CN220568314 U CN 220568314U
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- sealing
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- monocrystalline silicon
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- 238000007789 sealing Methods 0.000 claims abstract description 64
- 229910021421 monocrystalline silicon Inorganic materials 0.000 claims abstract description 40
- 230000002457 bidirectional effect Effects 0.000 claims abstract description 27
- 239000007788 liquid Substances 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 239000012530 fluid Substances 0.000 abstract description 28
- 238000005259 measurement Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 description 4
- 239000003990 capacitor Substances 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a pressure sensor with a flow guide channel, which comprises a main shell, wherein an upper internal thread joint and a lower internal thread joint are respectively arranged at the top end and the bottom end of the main shell, an external thread sealing column is arranged in an internal thread of the lower internal thread joint, an output end wire is arranged in the external thread sealing column, the bottom end of the output end wire penetrates through the outside of the external thread sealing column, and a monocrystalline silicon piece is arranged at one end of the inside of the main shell through an annular supporting structure. The bidirectional funnel type flow guiding channel plays a role in expanding the flow guiding caliber of the fluid, and the flow guiding channel supporting structure plays a role in stably supporting the bidirectional funnel type flow guiding channel, so that the fluid can be more quickly contacted with the surface of a monocrystalline silicon piece of the sensor, the resistance of the fluid when the fluid passes through the sensor is reduced, the pressure loss is reduced, the real-time and accurate measurement of the pressure change is facilitated, the response time is reduced, and the measurement result of the sensor is ensured to be more accurate and stable.
Description
Technical Field
The utility model relates to the technical field of pressure sensors, in particular to a pressure sensor with a flow guiding channel.
Background
A pressure sensor is a device for measuring pressure, which is used for converting externally applied pressure into corresponding electric signals for output, and its structure is generally composed of a pressure sensing element and a converter, wherein the pressure sensing element can be made of elastic material or piezoresistive material, and when the pressure is externally applied, the sensing element deforms or changes in resistance, and the converter converts the changes into electric signals. The electric signals can be used for monitoring, controlling and recording pressure changes and are widely applied to the fields of industry, automobiles, medical equipment and the like;
the structure of the pressure sensor at the present stage mainly comprises a supporting structure, a protective shell, a pressure sensing element, a converter, a signal processing circuit, an output interface and the like. The pressure sensing element is responsible for sensing externally applied pressure and generating corresponding deformation or displacement. The transducer converts the change of the sensing element into an electrical signal output, and components such as a resistor, a capacitor or an inductor can be used. The signal processing circuit receives and processes the electrical signal output by the converter, and may include an amplifier, a filter, an analog-to-digital converter, and the like. Finally, the output interface outputs the electrical signal generated by the signal processing circuit in a suitable form, and the protective housing structure of the pressure sensor is generally provided with a channel for detecting the entry of fluid, and the channel is smaller than the protective housing structure of the pressure sensor, and the channel is smaller, so that the fluid entry speed is limited, the surface of the sensing element of the pressure sensor cannot be reached in time, which may result in delay and inaccurate pressure measurement, and the channel is smaller, so that the speed of the fluid entry and exit is limited, thereby increasing the response time of the sensor, which means that when the fluid pressure changes, the sensor needs longer time to sense and react, and the delayed measurement result may be caused.
Disclosure of Invention
The present utility model is directed to a pressure sensor with a flow guiding channel, which increases the caliber of a fluid inlet channel of a housing structure of the pressure sensor, so as to solve the problems set forth in the background art.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a pressure sensor with a flow leader, comprising:
the device comprises a main shell, wherein an upper internal thread joint and a lower internal thread joint are respectively arranged at the top end and the bottom end of the main shell, an external thread sealing column is arranged at the internal thread of the lower internal thread joint, an output end lead is arranged in the external thread sealing column, the bottom end of the output end lead penetrates through the outside of the external thread sealing column, a monocrystalline silicon piece is arranged at one end inside the main shell through an annular supporting structure, a cross sealing piece is arranged in the lower internal thread joint below the monocrystalline silicon piece, a converter electrically connected with the output end of the monocrystalline silicon piece is arranged at the bottom end of the cross sealing piece, and the output end of the converter is electrically connected with the input end of the output end lead;
the bidirectional funnel type flow guiding channel is arranged in the main shell, the top end of the bidirectional funnel type flow guiding channel extends to the inner part of the upper internal threaded joint, and a flow guiding channel supporting structure for stably supporting the bidirectional funnel type flow guiding channel is arranged in the upper internal threaded joint.
Preferably, the annular supporting structure is a supporting ring fixed at one end inside the main shell, an annular groove with the same thickness as the monocrystalline silicon piece is arranged on the inner wall of the supporting ring, and the diameter of the annular groove is equal to the outer diameter of the monocrystalline silicon piece.
Preferably, the cross sealing piece comprises an annular step part arranged at one end inside the lower internal threaded joint and a first sealing ring arranged at the top end of the annular step part, a cross sealing sleeve is fixed inside the first sealing ring, the top end of the cross sealing sleeve penetrates through the outer part of the first sealing ring, and the converter is arranged at the bottom end of the cross sealing sleeve.
Preferably, the sealing ring II is installed to the one end that the cross seal cover is close to the converter, the cross seal cover comprises the solid post in center and the solid post periphery integrated into one piece's annular chimb in center, the top of annular chimb and the bottom mutual butt of sealing ring I, the bottom of annular chimb and the top mutual butt of sealing ring II.
Preferably, the bidirectional funnel type flow guide channel comprises a middle-arranged flow guide pipe fixed at the inner central position of the flow guide channel supporting structure, and an upper funnel flow collecting cover and a lower funnel flow guide cover which are arranged at the top end and the bottom end of the middle-arranged flow guide pipe, wherein the outer diameter of the upper funnel flow collecting cover is equal to the inner diameter of an upper internal threaded joint, the outer diameter of the upper funnel flow collecting cover gradually increases from one end of the middle-arranged flow guide pipe to one end of the upper internal threaded joint, and the outer diameter of the lower funnel flow guide cover gradually increases from one end of the middle-arranged flow guide pipe to one end of a monocrystalline silicon piece.
Preferably, a liquid storage cavity is arranged in the lower internal thread joint between the lower funnel air guide sleeve and the monocrystalline silicon piece, a lower lip ring is fixed at the bottom end of the lower funnel air guide sleeve, an annular bulge is arranged at one end of the inner part of the lower internal thread joint, and the top end of the annular bulge is fixedly connected with the bottom end of the lower lip ring.
Preferably, the guide channel supporting structure comprises a ring sleeve fixed on the outer peripheral surface of the middle guide pipe and straight rods arranged on the outer walls of the two sides of the ring sleeve.
Preferably, one end of the straight rod, which is far away from the loop, is fixedly connected with the inner wall of the upper internal threaded joint, and an upper sealing ring is arranged at the top end of the lower internal threaded joint below the loop.
Compared with the prior art, the utility model has the beneficial effects that: according to the pressure sensor with the flow guide channel, through the structure of mutual matching of the bidirectional funnel type flow guide channel, the monocrystalline silicon piece and the like, fluid in the pipeline to be measured enters the liquid storage cavity through the bidirectional funnel type flow guide channel and contacts the monocrystalline silicon piece, the bidirectional funnel type flow guide channel plays a role in expanding the flow guide caliber of the fluid, the flow guide channel supporting structure plays a role in stably supporting the bidirectional funnel type flow guide channel, so that the fluid can be contacted with the surface of the monocrystalline silicon piece of the sensor more quickly, and at the moment, the fluid is complete and dense to uniformly press the upper surface of the monocrystalline silicon piece, so that the resistance of the fluid when the fluid passes through the sensor can be reduced, the pressure loss is reduced, the pressure change can be measured accurately in real time, the response time is reduced, and the measuring result of the sensor is ensured to be more accurate and stable.
Drawings
FIG. 1 is a schematic diagram of a front view of the present utility model;
FIG. 2 is a schematic view of a front cross-sectional structure of the present utility model;
FIG. 3 is a schematic perspective view of the present utility model;
FIG. 4 is a schematic perspective sectional view of the main housing of the present utility model;
FIG. 5 is a schematic perspective sectional view of the main housing of the present utility model;
in the figure: 1. a main housing; 2. an upper internal thread joint; 3. a lower female threaded joint; 301. an upper seal ring; 4. an external thread sealing column; 5. an output end wire; 6. a flow guide channel supporting structure; 601. a straight rod; 602. a ring sleeve; 7. a bidirectional funnel-type flow guide channel; 701. a flow guiding pipe is arranged in the middle; 702. an upper funnel collecting cover; 703. a lower funnel flow guide sleeve; 704. a lower lip ring; 8. an annular protrusion; 9. a support ring; 901. an annular groove; 10. a liquid storage cavity; 11. monocrystalline silicon piece; 12. a cross-shaped sealing sleeve; 1201. a first sealing ring; 13. a second sealing ring; 14. a converter.
Detailed Description
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, an embodiment of the present utility model is provided: the pressure sensor with the flow guide channel comprises a main shell 1, wherein an upper internal thread joint 2 and a lower internal thread joint 3 are respectively arranged at the top end and the bottom end of the main shell 1, the pressure sensor is arranged at a pressure detection point of a pipeline to be detected, namely the main shell 1 is in threaded connection with the end part of the pipeline to be detected through the upper internal thread joint 2, an external thread sealing column 4 is arranged in the internal thread of the lower internal thread joint 3, an output end lead 5 is arranged in the external thread sealing column 4, the bottom end of the output end lead 5 penetrates through the external thread sealing column 4, a monocrystalline silicon piece 11 is arranged at one end in the main shell 1 through an annular supporting structure, a cross sealing piece is arranged in the lower internal thread joint 3 below the monocrystalline silicon piece 11, a converter 14 electrically connected with the output end of the monocrystalline silicon piece 11 is arranged at the bottom end of the cross sealing piece, and the output end of the converter 14 is electrically connected with the input end of the output end lead 5;
a bidirectional funnel type flow guiding channel 7, wherein the bidirectional funnel type flow guiding channel 7 is arranged in the main shell 1, the top end of the bidirectional funnel type flow guiding channel 7 extends to the inner part of the upper internal thread joint 2, and a flow guiding channel supporting structure 6 for stably supporting the bidirectional funnel type flow guiding channel 7 is arranged in the upper internal thread joint 2;
the fluid in the pipeline to be tested enters the liquid storage cavity 10 through the bidirectional funnel-shaped guide channel 7 and is contacted with the monocrystalline silicon piece 11, the monocrystalline silicon piece 11 senses the pressure exerted by the external fluid and generates corresponding deformation or displacement, the converter 14 converts the deformation change of the monocrystalline silicon piece 11 into an electric signal to be output, the converter 14 can use components such as a resistor, a capacitor or an inductor, the electric signal generated by the converter 14 is output in a proper form through the output end lead 5, and the electric signal can be an analog voltage signal, a digital signal or data transmitted through a communication interface, and the parts work together to convert the externally exerted pressure into the corresponding electric signal to be output, so that the pressure detection work is completed;
the bidirectional funnel type flow guiding channel 7 comprises a middle-arranged flow guiding pipe 701 fixed at the central position inside a flow guiding channel supporting structure 6, an upper funnel flow collecting cover 702 and a lower funnel flow guiding cover 703 which are arranged at the top end and the bottom end of the middle-arranged flow guiding pipe 701, the flow guiding channel supporting structure 6 comprises a ring sleeve 602 fixed on the outer peripheral surface of the middle-arranged flow guiding pipe 701, and straight rods 601 arranged on the outer walls of the two sides of the ring sleeve 602, one end of each straight rod 601 far away from the ring sleeve 602 is fixedly connected with the inner wall of an upper internal threaded joint 2, and an upper sealing ring 301 is arranged at the top end of a lower internal threaded joint 3 below the ring sleeve 602;
in the process of fluid passing through the bidirectional funnel-type flow guide channel 7, the middle flow guide pipe 701 is transversely supported through the straight rod 601 and the annular sleeve 602, so that the overall working stability of the bidirectional funnel-type flow guide channel 7 is ensured;
the outer diameter of the upper funnel flow collecting cover 702 is equal to the inner diameter of the upper internal threaded joint 2, the outer diameter of the upper funnel flow collecting cover 702 is gradually increased from one end of the middle-arranged flow guiding pipe 701 to one end of the upper internal threaded joint 2, and the outer diameter of the lower funnel flow guiding cover 703 is gradually increased from one end of the middle-arranged flow guiding pipe 701 to one end of the monocrystalline silicon piece 11;
a liquid storage cavity 10 is arranged in the lower internal thread joint 3 between the lower funnel diversion cover 703 and the monocrystalline silicon piece 11, a lower lip ring 704 is fixed at the bottom end of the lower funnel diversion cover 703, an annular bulge 8 is arranged at one end in the lower internal thread joint 3, and the top end of the annular bulge 8 is fixedly connected with the bottom end of the lower lip ring 704;
the external fluid firstly enters the upper internal threaded joint 2 and the upper funnel flow collecting cover 702, so that the fluid enters the liquid storage cavity 10 through the middle guide pipe 701, the lower funnel flow guiding cover 703 and the lower lip ring 704, the caliber of a fluid inlet and outlet channel is increased, the fluid inlet and outlet speed can be increased, the pressure loss is reduced, and the measuring result of the sensor is ensured to be more accurate and stable;
the annular supporting structure is a supporting ring 9 fixed at one end inside the main shell 1, an annular groove 901 with the same thickness as the monocrystalline silicon piece 11 is formed in the inner wall of the supporting ring 9, the diameter of the annular groove 901 is equal to the outer diameter of the monocrystalline silicon piece 11, and the supporting ring 9 has the purpose of supporting the monocrystalline silicon piece 11, so that the monocrystalline silicon piece 11 is stably installed, errors and data offset caused by installation looseness and vibration can be reduced, the monocrystalline silicon piece 11 can be stably installed to be in good contact with fluid, external interference is reduced, and the stability and reliability of the sensor are improved;
the cross sealing piece comprises an annular stepped part arranged at one end of the inner part of the lower internal threaded joint 3 and a first sealing ring 1201 arranged at the top end of the annular stepped part, a cross sealing sleeve 12 is fixed in the first sealing ring 1201, the top end of the cross sealing sleeve 12 penetrates through the outer part of the first sealing ring 1201, a converter 14 is arranged at the bottom end of the cross sealing sleeve 12, a second sealing ring 13 is arranged at one end of the cross sealing sleeve 12, which is close to the converter 14, the cross sealing sleeve 12 consists of a central solid column and an annular convex edge which is formed by integrally forming the outer peripheral surface of the central solid column, the top end of the annular convex edge is mutually abutted with the bottom end of the first sealing ring 1201, and the bottom end of the annular convex edge is mutually abutted with the top end of the second sealing ring 13;
the cross sealing sleeve 12 and the second sealing ring 13 ensure the sealing reliability of the pressure sensor, the sealing reliability can prevent the leakage and damage of the fluid in the sensor, the normal operation of the pressure sensor is ensured, and an accurate and reliable pressure measurement result is provided.
When the pressure sensor is used, firstly, a worker loads the pressure sensor into a pressure detection point position of a pipeline to be detected, namely, the main shell 1 is in threaded connection with the end part of the pipeline to be detected through the upper internal threaded connector 2, fluid in the pipeline to be detected enters the liquid storage cavity 10 through the bidirectional funnel-shaped flow guide channel 7 and is in contact with the monocrystalline silicon piece 11, the monocrystalline silicon piece 11 senses the pressure exerted by external fluid and generates corresponding deformation or displacement, the converter 14 converts deformation change of the monocrystalline silicon piece 11 into electric signals to be output, the converter 14 can use components such as a resistor, a capacitor or an inductor, the electric signals generated by the converter 14 are output in a proper form through the output end lead 5, the electric signals can be analog voltage signals, digital signals or data transmitted through a communication interface, the parts work together, the externally applied pressure is converted into corresponding electric signals to be output, so that the pressure detection work is completed, the bidirectional funnel-shaped flow guide channel 7 in the process plays a role of expanding the flow guide caliber of the fluid, the flow guide channel support structure 6 stably supports the bidirectional funnel-shaped flow guide channel 7, the fluid can be quickly contacted with the sensor to be output, and the pressure loss of the monocrystalline silicon piece 11 can be accurately measured, and the pressure loss of the monocrystalline silicon piece 11 can be reduced when the pressure sensor is completely and the pressure sensor is completely measured, and the pressure loss of the surface of the monocrystalline silicon piece is reduced, and the pressure sensor is accurately measured, and the pressure loss of the surface is reduced.
Claims (8)
1. A pressure sensor with a flow leader, comprising:
the device comprises a main shell body (1), wherein an upper internal thread joint (2) and a lower internal thread joint (3) are respectively arranged at the top end and the bottom end of the main shell body (1), an external thread sealing column (4) is arranged at the internal thread of the lower internal thread joint (3), an output end lead (5) is arranged in the external thread sealing column (4), the bottom end of the output end lead (5) penetrates through the outside of the external thread sealing column (4), a monocrystalline silicon piece (11) is arranged at one end in the main shell body (1) through an annular supporting structure, a cross sealing piece is arranged in the lower internal thread joint (3) below the monocrystalline silicon piece (11), a converter (14) electrically connected with the output end of the monocrystalline silicon piece (11) is arranged at the bottom end of the cross sealing piece, and the output end of the converter (14) is electrically connected with the input end of the output end lead (5);
the bidirectional funnel type flow guiding channel (7), the bidirectional funnel type flow guiding channel (7) is arranged in the main shell (1), the top end of the bidirectional funnel type flow guiding channel (7) extends to the inside of the upper internal threaded joint (2), and a flow guiding channel supporting structure (6) for stably supporting the bidirectional funnel type flow guiding channel (7) is arranged in the upper internal threaded joint (2).
2. A pressure sensor with a flow leader according to claim 1, wherein: the annular supporting structure is a supporting ring (9) fixed at one end inside the main shell (1), an annular groove (901) with the same thickness as that of the monocrystalline silicon piece (11) is formed in the inner wall of the supporting ring (9), and the diameter of the annular groove (901) is equal to the outer diameter of the monocrystalline silicon piece (11).
3. A pressure sensor with a flow leader according to claim 1, wherein: the cross sealing piece comprises an annular step part arranged at one end inside the lower internal threaded joint (3) and a first sealing ring (1201) arranged at the top end of the annular step part, a cross sealing sleeve (12) is fixed inside the first sealing ring (1201), the top end of the cross sealing sleeve (12) penetrates through the outer part of the first sealing ring (1201), and the converter (14) is arranged at the bottom end of the cross sealing sleeve (12).
4. A pressure sensor with a flow leader according to claim 3, wherein: the sealing device is characterized in that a second sealing ring (13) is arranged at one end, close to the converter (14), of the cross sealing sleeve (12), the cross sealing sleeve (12) is composed of a central solid column and an annular convex edge integrally formed on the outer peripheral surface of the central solid column, the top end of the annular convex edge is mutually abutted with the bottom end of the first sealing ring (1201), and the bottom end of the annular convex edge is mutually abutted with the top end of the second sealing ring (13).
5. A pressure sensor with a flow leader according to claim 1, wherein: the bidirectional funnel type flow guide channel (7) comprises a middle-arranged flow guide pipe (701) fixed at the inner central position of a flow guide channel supporting structure (6), an upper funnel flow collecting cover (702) and a lower funnel flow guide cover (703) which are arranged at the top end and the bottom end of the middle-arranged flow guide pipe (701), the outer diameter of the upper funnel flow collecting cover (702) is equal to the inner diameter of an upper internal threaded joint (2), the outer diameter of the upper funnel flow collecting cover (702) is gradually increased from one end of the middle-arranged flow guide pipe (701) to one end of the upper internal threaded joint (2), and the outer diameter of the lower funnel flow guide cover (703) is gradually increased from one end of the middle-arranged flow guide pipe (701) to one end of a monocrystalline silicon piece (11).
6. A pressure sensor with a flow leader according to claim 5 wherein: the liquid storage cavity (10) is arranged in the lower internal thread joint (3) between the lower funnel air guide sleeve (703) and the monocrystalline silicon piece (11), a lower lip ring (704) is fixed at the bottom end of the lower funnel air guide sleeve (703), an annular bulge (8) is arranged at one end of the inner part of the lower internal thread joint (3), and the top end of the annular bulge (8) is fixedly connected with the bottom end of the lower lip ring (704).
7. A pressure sensor with a flow leader according to claim 1, wherein: the guide channel supporting structure (6) comprises a ring sleeve (602) fixed on the peripheral surface of the middle guide pipe (701), and straight rods (601) arranged on the outer walls of two sides of the ring sleeve (602).
8. A pressure sensor with a flow leader according to claim 7 wherein: one end of the straight rod (601) far away from the ring sleeve (602) is fixedly connected with the inner wall of the upper internal threaded joint (2), and an upper sealing ring (301) is arranged at the top end of the lower internal threaded joint (3) below the ring sleeve (602).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273018.6U CN220568314U (en) | 2023-08-23 | 2023-08-23 | Pressure sensor with guide channel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322273018.6U CN220568314U (en) | 2023-08-23 | 2023-08-23 | Pressure sensor with guide channel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220568314U true CN220568314U (en) | 2024-03-08 |
Family
ID=90088324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322273018.6U Active CN220568314U (en) | 2023-08-23 | 2023-08-23 | Pressure sensor with guide channel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220568314U (en) |
-
2023
- 2023-08-23 CN CN202322273018.6U patent/CN220568314U/en active Active
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