CN201004001Y - Pressure transformer of liquid dynamic impact load detection and protection structure - Google Patents
Pressure transformer of liquid dynamic impact load detection and protection structure Download PDFInfo
- Publication number
- CN201004001Y CN201004001Y CNU2006201648972U CN200620164897U CN201004001Y CN 201004001 Y CN201004001 Y CN 201004001Y CN U2006201648972 U CNU2006201648972 U CN U2006201648972U CN 200620164897 U CN200620164897 U CN 200620164897U CN 201004001 Y CN201004001 Y CN 201004001Y
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- pressure
- unit
- inlet passage
- damper rod
- pressure transducer
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Abstract
The utility model relates to a liquid dynamic impacting load detecting protecting structure pressure transmitter which comprises a pressure transmitter, a damp device which is used for altering the magnitude and direction of the liquid pressure which enters the access is arranged on the liquid pressure entering access of the pressure transmitter, and a cavity which is used for preventing the damp device contacting with the pressure sensor is arranged between the damp device and the pressure sensor of the pressure transmitter. The utility model is able to restrain the impacting peak value when the high over loading alternation impacts the loads, slow down the impacting damage to the sensor, effectively protect the pressure sensor not be damaged in a short time and the utility model has simple structure and practicality.
Description
Technical field
The utility model relates to a kind of pressure unit, and particularly a kind of have the protection sensor and be not damaged the pressure unit of structure.
Background technology
The effect of alternate load at present, domesticly when test fluid dynamic impulsion load, runs into pressure transducer after installation, owing to can make sensor damage, even scrap in 1-2 month through regular meeting.All the time, during the dynamic impulsion pressure detection of fluid, run into one very stubborn problem be exactly that pressure unit under the situation that does not have the specified range of overpressure sensor, often is damaged when detecting dynamic impulsion load in a short time.For example: when constant pressure water supply, because the frequent starting of water pump, when starting mode of pump, water is gone out from water pump, acts directly on the pressure transducer, water hammer occurred, cause pressure transducer under the effect of water hammer, damage rapidly, its essence be pressure transducer under the alterante stress effect, fatigue breakdown.
The method that generally addresses this is that is: 1, select for use the pressure transducer of wide range to replace, be not damaged in use with assurance.2, at pressure connector place reload buffer pipe, the high overload pressure during with the elimination temporary impact, the protection sensor is not damaged.
When adopting the 1st kind of method, because after having selected the pressure transducer of wide range for use, pressure transducer is less in the signal output of a small amount of journey section, sensitivity is relatively poor, and subsequent conditioning circuit is handled very inconvenient, moreover can reduce the accuracy of measurement, can't satisfy customer requirement.Because separator tube is bigger, customer requirements is installed in the down-hole, can't use when volume is too big when adopting second method.
The utility model content
Technical problem to be solved in the utility model is at the deficiencies in the prior art; a kind of pressure unit of protecting structure that has is provided; can be good at the impact and the instantaneous high pressure overload of the dynamic alternating shock load of eliminate fluid, protect pressure transducer not to be damaged at short notice effectively.
For this reason; a kind of liquid dynamic impulsion load that provides the utility model detects protection structural type pressure unit; comprise pressure unit; the hydrodynamic pressure inlet passage of described pressure unit is provided with the damping unit of the hydrodynamic pressure size and Orientation that is used to change described inlet passage, and is provided with between the pressure transducer of described damping unit and described pressure unit and prevents described damping unit and described pressure transducer cavity in contact.
The utility model is on the basis of original pressure unit; increased damping unit; in order to the protection pressure transducer; can reduce the peak change of the alternating pressure that pressure transducer is subjected to; change the variable quantity of pressure effectively; reduce the instantaneous impact to sensor, the protection pressure transducer is not damaged, and can also satisfy the needs of impact pressure survey and small size etc.The utility model enters sensor internal to pressure, carries out repeatedly damping, and comprising the spring buffer damping, damper rod damping etc. can reach the purpose of slowing down impact.The utility model can suppress impact peak value effectively when the high overload alternating shock load, slow down the impact damage to sensor, protects pressure transducer not to be damaged in a short time effectively, and is simple and practical.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Description of drawings
Fig. 1 is a fundamental diagram of the present utility model;
Fig. 2 is a structural representation of the present utility model.
Embodiment
Fig. 1 is a fundamental diagram of the present utility model.Be installed in the damping unit S1 on pressure transducer 5 pressure port, to the signal processing module 6 that the signal of pressure transducer 5 is handled, signal processing module 6 is with 4～20 milliamperes of signal output S2.
Fig. 2 is a structural representation of the present utility model.The utility model comprises pressure unit, the hydrodynamic pressure inlet passage of described pressure unit is provided with the damping unit S1 of the hydrodynamic pressure size and Orientation that is used to change described inlet passage, and is provided with between the pressure transducer 5 of damping unit S1 and described pressure unit and prevents damping unit S1 and pressure transducer 5 cavity in contact.
Above-mentioned cavity is the necking part 9 of terminal that be provided with, the radius of hydrodynamic pressure inlet passage less than the described hydrodynamic pressure inlet passage radius that cooperates with damper rod 2.
As shown in Figure 1, described pressure unit comprises the pedestal 4 that has the hydrodynamic pressure inlet passage, described pressure inlet passage end is set with the pressure transducer 5 that induction enters pressure, and the induced signal of pressure transducer 5 is exported by cable 8 after signal processing module 6 amplifies.Pressure transducer 5 and signal processing module 6 are arranged in the pressure unit cap 7, and pressure unit cap 7 thread bushs are connected on the end that pressure transducer 5 is installed of pedestal 4, and the periphery of pedestal 4 is provided with the hexahedron that is used to act on clamping force.
Described damping unit comprises damper rod 2, spring 3; The pressure inlet passage of damper rod 2, pedestal 4 and pressure transducer 5 constitute the damper tube of described damping unit, the pressure inlet passage peripheral hardware of pedestal 4 is useful on places and makes the spring passageway of spring 3 along the compression of damper rod 2 direction of motion, one end of spring 3 links to each other with damper rod 2, and follows or promote damper rod 2 motions in described spring passageway; After the end face that damper rod 2 is positioned at described pressure inlet passage inflow point was experienced hydrodynamic pressure, damper rod 2 was to motion of pressure transducer 5 directions and compression spring 3, and baffle plate 1 is in order to the ejected position of the damper rod 2 of blocking.
The course of work of the present utility model is as follows: when extraneous fluid pressure affacts on the damper rod 2, at first, pressure affacts on the spring 3 by damper rod 2, stop pressure directly to affact on the pressure transducer 5, release the pressure to the direct effect of sensor 5, the effect of damper rod is exactly to stop fluid pressure directly to affact on the pressure transducer, its objective is the size of the pressure that enters pressure transducer being carried out repeatedly power, the change of direction, the pressure that enters in the sensor tube chamber is slowly risen, reach balance at last, the assurance pressure transducer is not impacted fast and is damaged.After fluid pressure balance in the tube chamber, damper rod is in suspended state, and under the effect of spring, damper rod can return to original state.When the second time, pressure entered, because the pressure differential on intraluminal pressure and the damper rod is bigger, damper rod can enter tube chamber under pressure, the liquid of tube chamber inside is pushed out, at this moment, if the inner material that greasy filth and so on is arranged of tube chamber can be pushed together, play the effect of self-cleaning, in order to avoid blocked and can't test.Pressure equilibrium subsequently as mentioned above, constantly repeats.
It should be noted last that, above embodiment is only unrestricted in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not break away from the spirit and scope of technical solutions of the utility model.
Claims (6)
1. a liquid dynamic impulsion load detects protection structural type pressure unit; comprise pressure unit; it is characterized in that; the hydrodynamic pressure inlet passage of described pressure unit is provided with the damping unit of the hydrodynamic pressure size and Orientation that is used to change described inlet passage, and is provided with between the pressure transducer of described damping unit and described pressure unit and prevents described damping unit and described pressure transducer cavity in contact.
2. liquid dynamic impulsion load according to claim 1 detects protection structural type pressure unit; it is characterized in that; described pressure unit comprises the pedestal (4) that has the hydrodynamic pressure inlet passage; described pressure inlet passage end is set with the pressure transducer (5) that induction enters pressure, and the induced signal of pressure transducer (5) is output after signal processing module (6) is handled amplification.
3. liquid dynamic impulsion load according to claim 2 detects protection structural type pressure unit, it is characterized in that the output signal that signal processing module (6) is handled after amplifying is 4 to 20 milliamperes of signals.
4. liquid dynamic impulsion load according to claim 2 detects protection structural type pressure unit; it is characterized in that; pressure transducer (5) and signal processing module (6) are arranged in the pressure unit cap (7); and pressure unit cap (7) thread bush is connected on the end that pressure transducer (5) is installed of pedestal (4), and the periphery of pedestal (4) is provided with the hexahedron that is used to act on clamping force.
5. liquid dynamic impulsion load according to claim 2 detects protection structural type pressure unit, it is characterized in that described damping unit comprises damper rod (2), spring (3); The pressure inlet passage of damper rod (2), pedestal (4) and pressure transducer (5) constitute the damper tube of described damping unit, the pressure inlet passage peripheral hardware of pedestal (4) is useful on places and makes the spring passageway of spring (3) along the compression of damper rod (2) direction of motion, one end of spring (3) links to each other with damper rod (2), and follows or promote damper rod (2) motion in described spring passageway; After the end face that damper rod (2) is positioned at described pressure inlet passage inflow point was experienced hydrodynamic pressure, damper rod (2) was to motion of pressure transducer (5) direction and compression spring (3).
6. liquid dynamic impulsion load detects protection structural type pressure unit according to claim 1 or 5; it is characterized in that described cavity is the necking part (9) of terminal that be provided with, the radius of described hydrodynamic pressure inlet passage less than the described hydrodynamic pressure inlet passage radius that cooperates with damper rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201648972U CN201004001Y (en) | 2006-12-30 | 2006-12-30 | Pressure transformer of liquid dynamic impact load detection and protection structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201648972U CN201004001Y (en) | 2006-12-30 | 2006-12-30 | Pressure transformer of liquid dynamic impact load detection and protection structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201004001Y true CN201004001Y (en) | 2008-01-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201648972U Expired - Fee Related CN201004001Y (en) | 2006-12-30 | 2006-12-30 | Pressure transformer of liquid dynamic impact load detection and protection structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201004001Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192809A (en) * | 2010-02-16 | 2011-09-21 | 罗伯特·博世有限公司 | Device for reducing pressure pulses in a pressure sensor |
| CN102445302A (en) * | 2010-09-30 | 2012-05-09 | 浙江三花股份有限公司 | Pressure sensor |
| CN104456083A (en) * | 2013-09-22 | 2015-03-25 | 珠海格力电器股份有限公司 | Pressure switch, pipeline system and air conditioning unit |
| CN102192809B (en) * | 2010-02-16 | 2016-12-14 | 罗伯特·博世有限公司 | Device for reducing pressure pulses in a pressure sensor |
| CN111562049A (en) * | 2020-06-03 | 2020-08-21 | 合肥左心科技有限公司 | Pressure transmitter suitable for high-strength impact |
-
2006
- 2006-12-30 CN CNU2006201648972U patent/CN201004001Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102192809A (en) * | 2010-02-16 | 2011-09-21 | 罗伯特·博世有限公司 | Device for reducing pressure pulses in a pressure sensor |
| CN102192809B (en) * | 2010-02-16 | 2016-12-14 | 罗伯特·博世有限公司 | Device for reducing pressure pulses in a pressure sensor |
| CN102445302A (en) * | 2010-09-30 | 2012-05-09 | 浙江三花股份有限公司 | Pressure sensor |
| CN104456083A (en) * | 2013-09-22 | 2015-03-25 | 珠海格力电器股份有限公司 | Pressure switch, pipeline system and air conditioning unit |
| CN111562049A (en) * | 2020-06-03 | 2020-08-21 | 合肥左心科技有限公司 | Pressure transmitter suitable for high-strength impact |
| CN111562049B (en) * | 2020-06-03 | 2021-10-08 | 大庆市豪方石油科技有限公司 | Pressure transmitter suitable for high-strength impact |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20141230 |
|
| EXPY | Termination of patent right or utility model |