CN215573521U - Back pressure type sensor capable of measuring ammonia water and grease medium - Google Patents
Back pressure type sensor capable of measuring ammonia water and grease medium Download PDFInfo
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- CN215573521U CN215573521U CN202121356945.9U CN202121356945U CN215573521U CN 215573521 U CN215573521 U CN 215573521U CN 202121356945 U CN202121356945 U CN 202121356945U CN 215573521 U CN215573521 U CN 215573521U
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Abstract
The utility model provides a backpressure type sensor capable of measuring ammonia water and grease media, which belongs to the technical field of sensors and comprises a pipeline, wherein a hollow cylinder is fixedly connected to the circumferential surface of the pipeline; the circular hole is formed in the circumferential surface of the pipeline; the silicon piezoresistive sensor is positioned on the inner sides of the hollow cylinder and the circular hole; the multiple groups of stabilizing mechanisms are connected with the silicon piezoresistive sensor so as to reduce the influence of the vibration of a medium in the pipeline at a backpressure position on the silicon piezoresistive sensor, so that the operation of the silicon piezoresistive sensor is more stable; compared with the traditional back pressure type sensor, the device can slow down the vibration in all directions caused by the complex stress condition of the silicon piezoresistive sensor at the back pressure due to the higher viscosity of the ammonia water or grease medium, thereby improving the measurement precision of the sensor in the ammonia water and grease medium.
Description
Technical Field
The utility model belongs to the technical field of sensors, and particularly relates to a backpressure type sensor capable of measuring ammonia water and grease media.
Background
The pressure sensor is a detection device, usually composed of a sensing element and a conversion element, and can sense the measured information and convert the sensed information into an electric signal or other information output in a required form according to a certain rule so as to meet the requirements of information transmission, processing, storage, display, recording, control and the like. The method is the first link for realizing automatic detection and automatic control. The pressure sensors can be classified into various types according to the position of the pressure sensors in the measurement system, wherein the back pressure type refers to the pressure which is applied to the moving fluid along the path (such as a pipeline or a wind passage) in the closed container and is opposite to the moving direction due to the obstruction of an obstacle or a sharp bend.
The measurement effect of the back pressure type sensor is different according to the measurement medium, for example, in ammonia water and grease type media, due to high viscosity, the fluid discharged from such systems is subjected to a pressure opposite to the flow direction at the outlet or the secondary side to form a very complicated stress condition, but the existing back pressure type sensor is not optimized and improved, and various vibrations are easy to occur to the sensor, so that the accuracy of the sensor is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a backpressure type sensor capable of measuring ammonia water and grease medium, and aims to solve the problems that in the prior art, due to high viscosity, the pressure opposite to the flowing direction of fluid discharged by a system at an outlet or a secondary side can form a very complicated stress condition, the existing backpressure type sensor is not optimized and improved, and the sensor is easy to generate various vibrations, so that the accuracy of the sensor is reduced.
In order to achieve the purpose, the utility model provides the following technical scheme:
a backpressure sensor for measuring ammonia water and grease media comprises:
the pipeline is characterized in that a hollow cylinder is fixedly connected to the circumferential surface of the pipeline;
the circular hole is formed in the circumferential surface of the pipeline;
a silicon piezoresistive sensor located inside the hollow cylinder and the circular hole;
the connecting mechanism is connected with the silicon piezoresistive sensor so as to fix the silicon piezoresistive sensor in the hollow cylinder; and
the stabilizing mechanisms are connected with the silicon piezoresistive sensors to slow down the influence of the vibration of media in the pipeline at the back pressure on the silicon piezoresistive sensors, so that the silicon piezoresistive sensors are more stable in operation.
As a preferred embodiment of the present invention, the connecting mechanism includes a plurality of rectangular limiting blocks and a plurality of rectangular limiting grooves, the plurality of rectangular limiting grooves are all formed in the inner circumferential wall of the hollow cylinder, the plurality of rectangular limiting blocks are all fixedly connected to the circumferential surface of the silicon piezoresistive sensor, and the plurality of rectangular limiting blocks are respectively slidably connected to the plurality of rectangular limiting grooves.
As a preferred scheme of the present invention, each of the stabilizing mechanisms includes a fixed block, a connecting plate, a movable block, and a spring, the fixed block is fixedly connected to the lower end of the silicon piezoresistive sensor, the movable block is disposed at the lower side of the fixed block, one end of the spring is fixedly connected to the circumferential inner wall of the hollow cylinder, the other end of the spring is fixedly connected to the side end of the movable block, and the upper and lower ends of the connecting plate are respectively and movably hinged to the side ends of the fixed block and the movable block through hinge shafts.
As a preferred embodiment of the present invention, a plurality of extension tubes are disposed in the hollow cylinder, one ends of the extension tubes far away from the silicon piezoresistive sensor are all fixedly connected to the inner circumferential wall of the hollow cylinder, one ends of the extension tubes close to the silicon piezoresistive sensor are respectively and fixedly connected to the side ends of the movable blocks, and the springs are respectively sleeved on the circumferential surfaces of the extension tubes.
As a preferred scheme of the present invention, a plurality of convex limiting grooves are formed on the circumferential surface of the pipeline, the lower ends of the plurality of movable blocks are fixedly connected with convex limiting blocks, and the plurality of convex limiting blocks are respectively slidably connected in the plurality of convex limiting grooves.
In a preferred embodiment of the present invention, a sealing ring is fixedly connected to a circumferential inner wall of the circular hole, and the silicon piezoresistive sensor is slidably connected to the circumferential inner wall of the sealing ring.
As a preferable scheme of the present invention, both side ends of the pipeline are fixedly connected with flanges.
Compared with the prior art, the utility model has the beneficial effects that:
1. in this scheme, when this device was measured in aqueous ammonia or grease class medium, the vibrations of all directions can be produced to silicon piezoresistive sensor because the higher complicated atress condition that causes of viscidity of medium, and the stabilizing mean that is equipped with this moment can in time reset silicon piezoresistive sensor through the resilience force of spring and flexible pipe to the precision of sensor measurement in aqueous ammonia and grease class medium has been improved.
2. In this scheme, stabilizing mean is equipped with four groups altogether, and is "ten" word form evenly distributed around silicon piezoresistive sensor to can all play fine buffering stable effect to silicon piezoresistive sensor in all directions.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a perspective view of the present invention;
FIG. 2 is an exploded view of the present invention;
FIG. 3 is a partial exploded view at A of FIG. 2 in accordance with the present invention;
FIG. 4 is a cross-sectional view of the present invention;
fig. 5 is a partial exploded view at B of fig. 4 according to the present invention.
In the figure: 1. a pipeline; 101. a flange; 102. a hollow cylinder; 103. a circular hole; 2. a silicon piezoresistive sensor; 3. a fixed block; 301. a connecting plate; 302. a movable block; 303. a spring; 304. a telescopic pipe; 305. a convex limiting block; 306. a convex limiting groove; 4. a rectangular limiting block; 401. a rectangular limiting groove; 5. and (5) sealing rings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-5, the present invention provides the following technical solutions:
a backpressure sensor for measuring ammonia water and grease media comprises:
the pipeline 1, the circumferential surface of the pipeline 1 is fixedly connected with a hollow cylinder 102;
a circular hole 103, wherein the circular hole 103 is opened on the circumferential surface of the pipeline 1;
a silicon piezoresistive sensor 2, the silicon piezoresistive sensor 2 being located inside the hollow cylinder 102 and the circular hole 103;
the connecting mechanism is connected with the silicon piezoresistive sensor 2 to realize the fixation of the silicon piezoresistive sensor in the hollow cylinder 102; and
the multiple groups of stabilizing mechanisms are connected with the silicon piezoresistive sensors 2 to slow down the influence of the vibration of media in the pipeline 1 at the back pressure on the silicon piezoresistive sensors 2, so that the operation of the silicon piezoresistive sensors 2 is more stable.
In the embodiment of the utility model, the pipeline 1 is located at the back pressure of the monitoring system, the circular hole 103 is opened at the upper part of the circumferential surface of the pipeline 1, the upper end and the lower end of the hollow cylinder 102 are both opened, the upper part of the cavity of the hollow cylinder 102 is a smaller circular groove, the lower part is a larger circular groove, the hollow cylinder 102 is located at the outer side of the circular hole 103, the silicon piezoresistive sensor 2 is an MEMS (micro electro mechanical system) pressure sensor based on MEMS technology, a display part consisting of a detection part consisting of a metal diaphragm at the lower part, a shell filled with silicon oil, an internal sensing element and a lead wire and a conversion element at the upper part is an OEM pressure measurement core body with high stability and high precision, the external pressure is transmitted to the sensing element through the metal diaphragm and the internal filled silicon oil and can be used for measuring all compatible pressure media, the silicon piezoresistive sensor 2 is connected to the circumferential inner wall of the hollow cylinder 102 through a connecting mechanism, the lower part of silicon piezoresistive sensor 2 passes circular port 103 and extends to pipeline 1 in, when monitoring system begins to operate, through aqueous ammonia or grease class medium in pipeline 1, silicon piezoresistive sensor 2 begins to measure pipeline 1's pressure this moment, and the pressure that medium produced in pipeline 1 causes the vibrations that silicon piezoresistive sensor 2 takes place complicated change to slow down through the stabilizing mean that is equipped with, and then improve silicon piezoresistive sensor 2's measurement accuracy, and stabilizing mean is equipped with four groups altogether, it distributes in silicon piezoresistive sensor 2's downside to be the cross. The silicon piezoresistive sensor 2 is electrically connected to an external power source, and for those skilled in the art, the silicon piezoresistive sensor 2 is the prior art and will not be described in detail.
Referring to fig. 4 and 5, the connecting mechanism includes a plurality of rectangular limiting blocks 4 and a plurality of rectangular limiting grooves 401, the rectangular limiting grooves 401 are all formed on the inner circumferential wall of the hollow cylinder 102, the rectangular limiting blocks 4 are all fixedly connected to the circumferential surface of the silicon piezoresistive sensor 2, and the rectangular limiting blocks 4 are respectively slidably connected to the rectangular limiting grooves 401.
In this embodiment: the silicon piezoresistive sensor 2 can be limited and fixed by the four rectangular limiting blocks 4 respectively sliding up and down along the four rectangular limiting grooves 401, so that the silicon piezoresistive sensor can only move up and down within the range of the rectangular limiting grooves 401.
Referring to fig. 3, each set of stabilizing mechanism includes a fixed block 3, a connecting plate 301, a movable block 302 and a spring 303, the fixed block 3 is fixedly connected to the lower end of the silicon piezoresistive sensor 2, the movable block 302 is disposed at the lower side of the fixed block 3, one end of the spring 303 is fixedly connected to the inner circumferential wall of the hollow cylinder 102, the other end of the spring 303 is fixedly connected to the side end of the movable block 302, and the upper and lower ends of the connecting plate 301 are movably hinged to the side ends of the fixed block 3 and the movable block 302 through hinge shafts, respectively.
In this embodiment: when silicon piezoresistive sensor 2 shakes, it can take place the skew to certain direction, and then drive one or more movable block 302 through the transmission of one or more fixed block 3 and connecting plate 301 of this direction and move to one or more directions of keeping away from silicon piezoresistive sensor 2, and make one or more spring 303 compress, resilience force through one or more spring 303 can pull back one or more movable block 302, and make silicon piezoresistive sensor 2 reset the normal position through the transmission of one or more connecting plate 301 and fixed block 3, thereby play the effect of stabilizing silicon piezoresistive sensor 2, avoid it to receive the influence measurement accuracy of the vibrations of all directions.
Specifically referring to fig. 5, a plurality of telescopic pipes 304 are disposed in the hollow cylinder 102, one ends of the telescopic pipes 304 far away from the silicon piezoresistive sensor 2 are all fixedly connected to the inner circumferential wall of the hollow cylinder 102, one ends of the telescopic pipes 304 near the silicon piezoresistive sensor 2 are respectively fixedly connected to the side ends of the movable blocks 302, and the springs 303 are respectively sleeved on the circumferential surface of the telescopic pipes 304.
In this embodiment: the plurality of extension tubes 304 are provided to be respectively stretched or compressed along with the plurality of springs 303 sleeved thereon, so that the pulling force on the plurality of movable blocks 302 is enhanced, and the effect of stabilizing the buffering of the silicon piezoresistive sensor 2 is further enhanced.
Referring to fig. 5, a plurality of convex limiting grooves 306 are formed in the circumferential surface of the pipeline 1, the lower ends of the plurality of movable blocks 302 are fixedly connected with convex limiting blocks 305, and the plurality of convex limiting blocks 305 are slidably connected in the plurality of convex limiting grooves 306 respectively.
In this embodiment: the four movable blocks 302 can be limited and fixed by the four convex limiting blocks 305 respectively sliding linearly along the four convex limiting grooves 306, so that the four movable blocks can only move linearly within the range of the convex limiting grooves 306.
Specifically referring to fig. 2, a sealing ring 5 is fixedly connected to the inner circumferential wall of the circular hole 103, and the silicon piezoresistive sensor 2 is slidably connected to the inner circumferential wall of the sealing ring 5.
In this embodiment: sealing ring 5 plays sealed effect, and the circumference inner wall of sealing ring 5 closely laminates with silicon piezoresistive sensor 2's circumferential surface, can prevent to cause the interior fluidic of pipeline 1 to reveal when silicon piezoresistive sensor 2 takes place vibrations.
Specifically referring to fig. 1, two side ends of the pipeline 1 are fixedly connected with flanges 101.
In this embodiment: the flanges 101 fixed to the left and right ends of the pipeline 1 can be fixed more stably with other devices of the system, thereby reducing the influence of vibration on the piezoresistive silicon sensor 2 to a certain extent.
The working principle and the using process of the utility model are as follows: when the silicon piezoresistive sensor 2 vibrates and deviates to a certain direction, one or more fixed blocks 3 and the connecting plate 301 in the direction deviate accordingly, so that one or more movable blocks 302 are driven to move towards the direction far away from the silicon piezoresistive sensor 2, one or more springs 303 are compressed, one or more movable blocks 302 can be pulled back by the resilience force of one or more springs 303, and the silicon piezoresistive sensor 2 returns to the original position through the transmission action of one or more connecting plates 301 and the fixed blocks 3, so that the silicon piezoresistive sensor 2 is stabilized, and the measurement accuracy is prevented from being influenced by the vibration in all directions; compared with the traditional back pressure type sensor, the device can slow down the vibration in all directions caused by the complex stress condition of the silicon piezoresistive sensor 2 at the back pressure due to the higher viscosity of the ammonia water or grease medium, thereby improving the measurement precision of the sensor in the ammonia water and grease medium.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A backpressure sensor capable of measuring ammonia water and grease media is characterized by comprising:
the pipeline (1), the circumference surface of the pipeline (1) is fixedly connected with a hollow cylinder (102);
the circular hole (103), the circular hole (103) is opened on the circumferential surface of the pipeline (1);
a silicon piezoresistive sensor (2), the silicon piezoresistive sensor (2) being located inside the hollow cylinder (102) and the circular hole (103);
a connection mechanism connected with the silicon piezoresistive sensor (2) to realize the fixation thereof in the hollow cylinder (102); and
the stabilizing mechanisms are connected with the silicon piezoresistive sensors (2) to slow down the influence of the vibration of media in the pipeline (1) at the back pressure on the silicon piezoresistive sensors (2) so that the operation of the silicon piezoresistive sensors (2) is more stable.
2. The back pressure type measurable ammonia and grease based media sensor of claim 1, wherein: the connecting mechanism comprises a plurality of rectangular limiting blocks (4) and a plurality of rectangular limiting grooves (401), the rectangular limiting grooves (401) are all arranged on the inner wall of the circumference of the hollow cylinder (102), the rectangular limiting blocks (4) are fixedly connected to the circumferential surface of the silicon piezoresistive sensor (2), and the rectangular limiting blocks (4) are respectively connected in the rectangular limiting grooves (401) in a sliding mode.
3. The back pressure type measurable ammonia and grease based media sensor of claim 2, wherein: every group stabilizing mean all includes fixed block (3), connecting plate (301), movable block (302) and spring (303), fixed block (3) fixed connection is in the lower extreme of silicon piezoresistive sensor (2), the downside of fixed block (3) is located in movable block (302), the one end fixed connection of spring (303) is in the circumference inner wall of hollow section of thick bamboo (102), the other end fixed connection of spring (303) is in the side of movable block (302), the upper and lower both ends of connecting plate (301) articulate in the side of fixed block (3) and movable block (302) through the hinge activity respectively.
4. The back pressure type measurable ammonia and grease based media sensor of claim 3, wherein: a plurality of telescopic pipes (304) are arranged in the hollow cylinder (102), one ends of the telescopic pipes (304) far away from the silicon piezoresistive sensors (2) are fixedly connected to the circumferential inner wall of the hollow cylinder (102), one ends of the telescopic pipes (304) close to the silicon piezoresistive sensors (2) are fixedly connected to the side ends of the movable blocks (302) respectively, and the springs (303) are sleeved on the circumferential surfaces of the telescopic pipes (304) respectively.
5. The back pressure type measurable ammonia and grease based media sensor of claim 4, wherein: a plurality of convex spacing grooves (306) have been seted up on the circumferential surface of pipeline (1), and is a plurality of the equal fixedly connected with convex stopper (305) of lower extreme of movable block (302) is a plurality of convex stopper (305) sliding connection is in a plurality of convex spacing grooves (306) respectively.
6. The back pressure type measurable ammonia and grease based media sensor of claim 5, wherein: the circumference inner wall fixedly connected with sealing washer (5) of circular port (103), silicon piezoresistive sensor (2) sliding connection is in the circumference inner wall of sealing washer (5).
7. The back pressure type measurable ammonia and grease based media sensor of claim 6, wherein: both side ends of the pipeline (1) are fixedly connected with flanges (101).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121356945.9U CN215573521U (en) | 2021-06-17 | 2021-06-17 | Back pressure type sensor capable of measuring ammonia water and grease medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121356945.9U CN215573521U (en) | 2021-06-17 | 2021-06-17 | Back pressure type sensor capable of measuring ammonia water and grease medium |
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| Publication Number | Publication Date |
|---|---|
| CN215573521U true CN215573521U (en) | 2022-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121356945.9U Active CN215573521U (en) | 2021-06-17 | 2021-06-17 | Back pressure type sensor capable of measuring ammonia water and grease medium |
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| CN (1) | CN215573521U (en) |
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- 2021-06-17 CN CN202121356945.9U patent/CN215573521U/en active Active
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