CN110763374A - Pressure sensor with overload protection function - Google Patents
Pressure sensor with overload protection function Download PDFInfo
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- CN110763374A CN110763374A CN201911158369.4A CN201911158369A CN110763374A CN 110763374 A CN110763374 A CN 110763374A CN 201911158369 A CN201911158369 A CN 201911158369A CN 110763374 A CN110763374 A CN 110763374A
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- Prior art keywords
- block
- pressure
- pressure sensor
- overload protection
- sensitive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0618—Overload protection
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- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to the technical field of pressure sensor protection, and discloses a pressure sensor with an overload protection function. This pressure sensor with overload protection function, through the cooperation use of resetting means and magnetic means in the protection subassembly, when the pressure value of forced induction piece reaches the setting value of adjusting element among the control element, the second electro-magnet in the stopper is got electric earlier, make the movable block enter into the inside of fixed block, then first electro-magnet is got electric, produce magnetic force and make the elevator move down, and then the sensitive subassembly that drives and the elevator is connected moves down, protect sensitive subassembly, thereby avoid too big sensitive subassembly of pressure can not receive the damage, after the magnetic means loses the electricity, the elasticity of first spring and second spring makes sensitive subassembly and stopper can carry out automatic re-setting, carry out normal use, automatic overload protection's purpose has been realized.
Description
Technical Field
The invention relates to the technical field of pressure sensor protection, in particular to a pressure sensor with an overload protection function.
Background
The pressure sensor is a device or a device which can sense pressure signals and can convert the pressure signals into usable output electric signals according to a certain rule, the pressure sensor generally consists of a pressure sensitive element and a signal processing unit, and the pressure sensor is the most common sensor in industrial practice and is widely applied to various industrial self-control environments, relating to various industries such as water conservancy and hydropower, railway traffic, intelligent building, production self-control, aerospace, war industry, petrifaction, oil wells, electric power, ships, machine tools, pipelines and the like.
Each finished pressure sensor in the prior art has a standard measuring range, and in the process of applying a pressure load, if the load exceeds the measuring range of the pressure sensor, an elastic body in the pressure sensor can be subjected to unrecoverable deformation, so that a test system fails, the accuracy of the work and test of equipment is affected, and in the actual use process, a plurality of operation and force application processes are complicated, and the load applied to the pressure sensor cannot be changed in the standard measuring range at any time, so that the pressure sensor is easily damaged, and therefore the pressure sensor with the overload protection function is provided to solve the problems.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides the pressure sensor with the overload protection function, which has the advantages of automatic overload protection and the like, and solves the problems that the existing pressure sensor is complicated in a plurality of operation and force application processes in the actual use process, and the load applied to the pressure sensor cannot be changed within the standard measuring range constantly, so that the pressure sensor is easy to damage.
(II) technical scheme
In order to achieve the purpose of automatic overload protection, the invention provides the following technical scheme: a pressure sensor with an overload protection function comprises a shell, wherein a protection component and a sensitive component are arranged in the shell, and the sensitive component is in telecommunication connection with the protection component through a lead;
the protection assembly comprises a lifting device or a pressure relief device, the lifting device or the pressure relief device is in telecommunication connection with a control element and is used for controlling the sensitive assembly to move up and down, and the lifting device comprises a resetting device and a magnetic device;
the sensitive assembly comprises a pressure sensing block and a connecting block, and the pressure sensing block is arranged on the connecting block.
Preferably, the pressure relief device comprises a pressure relief valve and a hollow pipe, and the hollow pipe is connected with a pressure lever and an exhaust pipeline.
Preferably, the resetting device comprises a cylinder, a lifting block and a first spring are mounted inside the cylinder, the first spring is connected to the outer side of the lifting block, and one end of the lifting block is connected with the connecting block.
Preferably, the lifting block comprises a round rod, one end of the round rod is connected with a round piece, the round piece is connected with a buffer ring, and one end, far away from the round piece, of the round rod is provided with a thread.
Preferably, the magnetic device comprises a first electromagnet, an electrical connector and a limiting block, the electrical connector is in telecommunication connection with the first electromagnet and the limiting block through a conducting wire, and the first electromagnet is used for generating magnetic force for enabling the sensitive component to move downwards.
Preferably, the limiting block comprises a fixed block, a second electromagnet and a second spring are connected inside the fixed block, the fixed block is connected with a moving block through the second spring, and the second electromagnet is used for generating magnetic force for enabling the moving block to move towards the inside of the fixed block.
Preferably, the control element is internally provided with an adjusting element, the adjusting element is used for setting a rated pressure value, and when the pressure of the sensitive component is greater than the rated value, the magnetic device drives the sensitive component to move downwards for protection.
Preferably, the casing includes the base, be connected with the closing cap on the base, be connected with the pipe on the closing cap, the pressure release passageway has been seted up to the inside of pipe, the internal connection of pressure release passageway has waterproof ventilated membrane.
(III) advantageous effects
Compared with the prior art, the invention provides the pressure sensor with the overload protection function, which has the following beneficial effects:
1. this pressure sensor with overload protection function, use through the cooperation of resetting means and magnetic means among the protection subassembly, when the pressure value of forced induction piece reaches the setting value of the adjusting element among the control element, the second electro-magnet in the stopper is got electric earlier, make the movable block enter into the inside of fixed block, then first electro-magnet is got electric, produce magnetic force and make the elevator move down, and then the sensitive subassembly that drives and the elevator is connected moves down, enter into the inside of pipe, protect sensitive subassembly, thereby avoid too big sensitive subassembly of pressure can not receive the damage, and use through the cooperation of first spring and second spring, after magnetic means loses the electricity, the elasticity of first spring and second spring makes sensitive subassembly and stopper can carry out automatic re-setting, carry out normal use, automatic overload protection's purpose has been realized.
2. This pressure sensor with overload protection function, through the use of stopper, the movable block in the stopper is at the in-process of normal use, locks the position of lifter block, avoids the pressure on the sensitive subassembly to push it down, makes the sensitive subassembly when normal use, can be stable detect, and through the use of buffering ring, buffering ring has absorbing function, avoids the lifter block decline in-process to produce the damage to first electro-magnet, has realized detecting stable purpose.
Drawings
Fig. 1 is a schematic cross-sectional view of a pressure sensor with overload protection function according to the present invention.
Fig. 2 is a schematic perspective view of a pressure sensor with an overload protection function according to the present invention.
Fig. 3 is a schematic diagram of a lifting block in a pressure sensor with an overload protection function according to the present invention.
Fig. 4 is a schematic diagram of a limiting block in the pressure sensor with the overload protection function according to the present invention.
Fig. 5 shows another structure of a protection assembly in a pressure sensor with an overload protection function according to the present invention.
In the figure: the device comprises a base 1, a sealing cover 2, an electrical connector 3, a circular tube 4, a pressure sensing block 5, a cylinder 6, a connecting block 7, a lifting block 8, a circular rod 801, a circular wafer 802, a buffering ring 803, threads 804, a first spring 9, a limiting block 10, a fixing block 1001, a second electromagnet 1002, a moving block 1003, a second spring 1004, a first electromagnet 11, a control element 12, a pressure relief channel 13, a pressure relief valve 14, a hollow tube 15, a pressure lever 16 and an exhaust pipeline 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.
Referring to 1-4, a pressure sensor with an overload protection function comprises a shell, wherein the shell comprises a base 1, a sealing cover 2 is connected onto the base 1, a round pipe 4 is connected onto the sealing cover 2, a pressure relief channel 13 is formed inside the round pipe 4, a waterproof breathable film is connected inside the pressure relief channel 13, a protection assembly and a sensitive assembly are installed inside the shell, the sensitive assembly is in telecommunication connection with the protection assembly through a lead, the sensitive assembly comprises a pressure sensing block 5 and a connecting block 7, and the pressure sensing block 5 is installed on the connecting block 7;
the protection assembly comprises a resetting device, a magnetic device and a control element 12, the control element 12 can be a PLC, the control element 12 is electrically connected with the magnetic device through a lead and used for controlling the opening and closing of the magnetic device, an adjusting element is further arranged inside the control element 12 and can be a single chip microcomputer, the adjusting element is used for setting a rated pressure value, when the pressure of the sensitive assembly is larger than the rated value, the magnetic device firstly enables a limiting block 10 to retract and then drives the sensitive assembly to move downwards for protection, the resetting device comprises a cylinder 6, a lifting block 8 and a first spring 9 are arranged inside the cylinder 6, the first spring 9 is connected to the outer side of the lifting block 8, one end of the lifting block 8 is connected with a connecting block 7, the lifting block 8 comprises a round rod 801, one end of the round rod 801 is connected with a wafer 802, a buffer ring 803 is connected to the wafer 802, and the buffer ring 803 can, a thread 804 is arranged at one end of the round rod 801 far away from the round piece 802, and the magnetic device is used for controlling the resetting device to drive the sensitive component to move up and down;
the magnetic device comprises a first electromagnet 11, an electric connector 3 and a limiting block 10, the limiting block 10 comprises a fixing block 1001, the fixing block 1001 is a cylinder with a hollow inner part and is connected with a circular tube 4, a second electromagnet 1002 and a second spring 1004 are connected inside the fixing block 1001, the fixing block 1001 is connected with a moving block 1003 through the second spring 1004, the second electromagnet 1002 is used for generating magnetic force for enabling the moving block 1003 to move towards the inside of the fixing block 1001, the electric connector 3 is in telecommunication connection with the first electromagnet 11 and the limiting block 10 through a conducting wire, and the first electromagnet 11 is used for generating magnetic force for enabling the sensitive component to move downwards.
Still another embodiment of the protection assembly is provided, please refer to fig. 5, which is different in that a pressure rod 16 is connected to the bottom of the connecting block 7, the pressure rod 16 is connected to the inside of a hollow tube 15, an air release valve 14 is connected to the outside of the hollow tube 15, the air release valve 14 is in telecommunication connection with the control element 12, an exhaust pipeline 17 is further connected to the air release valve 14, when the pressure exceeds a rated value, the control element 12 controls the air release valve 14 to release the pressure, and the pressure rod 16 moves downward under the action of atmospheric pressure to drive the sensing element to retract into the circular tube 4.
When in use:
(1) the control element 12 and the adjusting element inside the control element monitor the detected pressure value of the sensitive component, when the detected pressure value is greater than the rated value of the adjusting element, the control element 12 first enables the second electromagnet 1002 in the limiting block 10 to be powered on, enables the moving block 1003 to retract, then enables the first electromagnet 11 to be powered on, the generated magnetic force drives the lifting block 8 to move downwards, and then the sensitive component connected with the lifting block 8 is driven to move downwards to enter the inside of the circular tube 4, so that the sensitive component is prevented from being damaged.
(2) When the sensitive component does not detect that the pressure value exceeds the rated pressure value, the first electromagnet 11 is firstly de-energized, the lifting block 8 is reset under the action of the first spring 9, then the second electromagnet 1002 is de-energized, and the second spring 1004 enables the moving block 1003 to be reset, so that the lifting block 8 is locked.
The pressure sensor with the overload protection function is characterized in that through the matched use of a resetting device and a magnetic device in a protection assembly, when the pressure value of a pressure sensing block 5 reaches the set value of an adjusting element in a control element 12, a second electromagnet 1002 in a limiting block 10 is electrified to enable a moving block 1003 to enter the inside of a fixed block 1001, then a first electromagnet 11 is electrified to generate magnetic force to enable a lifting block 8 to move downwards so as to drive a sensitive assembly connected with the lifting block 8 to move downwards and enter the inside of a circular tube 4 to protect the sensitive assembly, so that the sensitive assembly with overlarge pressure is prevented from being damaged, and through the matched use of a first spring 9 and a second spring 1004, after the magnetic device is powered off, the elastic forces of the first spring 9 and the second spring 1004 enable the sensitive assembly and the limiting block 10 to automatically reset for normal use, and the purpose of automatic overload protection is realized, the problem of current pressure sensor in the actual use many operations and the application of force process complicated, can't guarantee constantly that the load that exerts on pressure sensor changes in standard range, consequently easily leads to its damage is solved.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The pressure sensor with the overload protection function is characterized by comprising a shell, wherein a protection component and a sensitive component are arranged in the shell, and the sensitive component is in telecommunication connection with the protection component through a wire;
the protection assembly comprises a lifting device or a pressure relief device, the lifting device or the pressure relief device is in telecommunication connection with a control element (12) and is used for controlling the sensitive assembly to move up and down, and the lifting device comprises a resetting device and a magnetic device;
the sensitive assembly comprises a pressure sensing block (5) and a connecting block (7), and the pressure sensing block (5) is installed on the connecting block (7).
2. A pressure sensor with overload protection according to claim 1, wherein: the pressure relief device comprises a pressure relief valve (14) and a hollow pipe (15), and a pressure lever (16) and an exhaust pipeline (17) are connected to the hollow pipe (15).
3. A pressure sensor with overload protection according to claim 1, wherein: the resetting device comprises a cylinder (6), wherein a lifting block (8) and a first spring (9) are arranged inside the cylinder (6), the first spring (9) is connected to the outer side of the lifting block (8), and one end of the lifting block (8) is connected with a connecting block (7).
4. A pressure sensor with overload protection function according to claim 3, characterized in that: the lifting block (8) comprises a round rod (801), one end of the round rod (801) is connected with a wafer (802), the wafer (802) is connected with a buffer ring (803), and one end, far away from the wafer (802), of the round rod (801) is provided with a thread (804).
5. A pressure sensor with overload protection according to claim 1, wherein: the magnetic device comprises a first electromagnet (11), an electric connector (3) and a limiting block (10), the electric connector (3) is in telecommunication connection with the first electromagnet (11) and the limiting block (10) through a lead, and the first electromagnet (11) is used for generating magnetic force for enabling the sensitive component to move downwards.
6. The pressure sensor with overload protection function according to claim 4, wherein: the limiting block (10) comprises a fixing block (1001), a second electromagnet (1002) and a second spring (1004) are connected to the inside of the fixing block (1001), the fixing block (1001) is connected with a moving block (1003) through the second spring (1004), and the second electromagnet (1002) is used for generating magnetic force which enables the moving block (1003) to move towards the inside of the fixing block (1001).
7. A pressure sensor with overload protection according to claim 1, wherein: and an adjusting element is further arranged in the control element (12), the adjusting element is used for setting a rated pressure value, and when the pressure of the sensitive component is greater than the rated value, the magnetic device drives the sensitive component to move downwards for protection.
8. A pressure sensor with overload protection according to claim 1, wherein: the casing includes base (1), be connected with closing cap (2) on base (1), be connected with pipe (4) on closing cap (2), pressure release passageway (13) have been seted up to the inside of pipe (4), the internal connection of pressure release passageway (13) has waterproof ventilated membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911158369.4A CN110763374A (en) | 2019-11-22 | 2019-11-22 | Pressure sensor with overload protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911158369.4A CN110763374A (en) | 2019-11-22 | 2019-11-22 | Pressure sensor with overload protection function |
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| Publication Number | Publication Date |
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| CN110763374A true CN110763374A (en) | 2020-02-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911158369.4A Pending CN110763374A (en) | 2019-11-22 | 2019-11-22 | Pressure sensor with overload protection function |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326102A (en) * | 2020-10-21 | 2021-02-05 | 林荣富 | Dustproof pressure sensor and application method thereof |
| CN112959075A (en) * | 2021-02-04 | 2021-06-15 | 陈增法 | Turning and polishing integrated machine for numerical control machining |
| CN114593864A (en) * | 2022-03-09 | 2022-06-07 | 中国船舶重工集团公司第七0三研究所 | Hydraulic sensor for thermal power plant thermodynamic system |
| CN114777993A (en) * | 2022-04-15 | 2022-07-22 | 苏州森斯缔夫传感科技有限公司 | High-overload monocrystalline silicon differential pressure sensor |
| CN114878036A (en) * | 2022-01-25 | 2022-08-09 | 许先洪 | Intelligent pressure sensor with automatic pressure relief function |
-
2019
- 2019-11-22 CN CN201911158369.4A patent/CN110763374A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112326102A (en) * | 2020-10-21 | 2021-02-05 | 林荣富 | Dustproof pressure sensor and application method thereof |
| CN112959075A (en) * | 2021-02-04 | 2021-06-15 | 陈增法 | Turning and polishing integrated machine for numerical control machining |
| CN114878036A (en) * | 2022-01-25 | 2022-08-09 | 许先洪 | Intelligent pressure sensor with automatic pressure relief function |
| CN114878036B (en) * | 2022-01-25 | 2023-11-17 | 广东可银智能装备科技有限公司 | Intelligent pressure sensor with automatic pressure relief function |
| CN114593864A (en) * | 2022-03-09 | 2022-06-07 | 中国船舶重工集团公司第七0三研究所 | Hydraulic sensor for thermal power plant thermodynamic system |
| CN114593864B (en) * | 2022-03-09 | 2024-05-17 | 中国船舶重工集团公司第七0三研究所 | Hydraulic sensor for thermal power plant thermodynamic system |
| CN114777993A (en) * | 2022-04-15 | 2022-07-22 | 苏州森斯缔夫传感科技有限公司 | High-overload monocrystalline silicon differential pressure sensor |
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