CN204154434U - For the pressure transducer of subsurface equipment - Google Patents
For the pressure transducer of subsurface equipment Download PDFInfo
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- CN204154434U CN204154434U CN201420478143.9U CN201420478143U CN204154434U CN 204154434 U CN204154434 U CN 204154434U CN 201420478143 U CN201420478143 U CN 201420478143U CN 204154434 U CN204154434 U CN 204154434U
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- sensor
- ring seal
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- pressure transducer
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Abstract
The disclosed pressure transducer for subsurface equipment of the utility model embodiment, relates to pressure measurement technology, can adapt to precision and the reliability requirement of underground survey.Sensor connector excircle is provided with O-ring seal, makes to seal between sensor connector and tested instrument; Sensor core is fixed in sensor housing, the O-ring seal of sensor core periphery seals between sensor core and sensor housing, one end is provided with sensitive pressure diaphragm, the other end is provided with signal output device, the joining distal ends of sensitive pressure diaphragm and the cylindric endoporus of sensor connector, signal output device is connected with the circuit board being fixed on sensor housing inside.Be mainly used in the pressure test of subsurface equipment.
Description
Technical field
The utility model relates to pressure measurement technology, particularly relates to a kind of pressure transducer for subsurface equipment.
Background technology
Pressure transducer is a kind of sensor the most conventional in industrial practice, instrument and meter control.And be widely used in oil well industry, for measuring the concrete pressure condition of hole condition, it is requisite measuring equipment under oil well, because subsurface environment is complicated, and each subsurface equipment is gone into the well, the working time is longer, therefore have very high requirement to the temperature of pressure transducer, precision and reliability, but current pressure transducer is when carrying out underground survey, no matter precision or reliability, all can not meet the demands.
Utility model content
For solving the problems of the technologies described above, the utility model embodiment provides a kind of pressure transducer for subsurface equipment, can adapt to precision and the reliability requirement of underground survey.
Concrete solution is as follows:
For a pressure transducer for subsurface equipment, comprising: sensor connector, sensor core, sensor housing, the first O-ring seal and the second O-ring seal;
Wherein, roughly cylindrically, one end is connected by screw thread and tested instrument sensor connector, and the other end is welded on sensor housing, and sensor connector excircle is provided with at least one O-ring seal, and O-ring seal makes to seal between sensor connector and tested instrument; Sensor core is fixed in sensor housing, the O-ring seal being arranged on sensor core periphery seals between sensor core and sensor housing, sensor core one end is provided with sensitive pressure diaphragm, sensitive pressure diaphragm is stainless steel material, the other end is provided with signal output device, the joining distal ends of sensitive pressure diaphragm and the cylindric endoporus of sensor connector, signal output device is connected with the circuit board being fixed on sensor housing inside.
The pressure transducer for subsurface equipment that the utility model embodiment provides, sensor connector connects together by welding with sensor outer housing, and is fixedly packaged within joint and shell by the periphery of sensor core, effectively improves the reliability of pressure transducer.Seal between sensor connector and tested instrument, down-hole fluid enters sensor internal along the cylindric endoporus of sensor connector, seal between sensor core and sensor housing, sensitive pressure diaphragm on sensor core is subject to the extruding of fluid, inner bridge circuit is occurred uneven, sensor circuit 3 sensitivity is to uneven, and output voltage, effectively improves the precision of pressure transducer.
Accompanying drawing explanation
Included accompanying drawing is used to provide the further understanding to the utility model embodiment, which constituting a part for instructions, for illustrating embodiment of the present utility model, and coming together to explain principle of the present utility model with text description.Apparently, the accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
The pressure sensor structure schematic diagram for subsurface equipment that Fig. 1 provides for the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is described in detail.In the following description, the nonrestrictive object for explanation, has set forth detail, to help to understand the utility model all sidedly.But, it will be apparent to those skilled in the art that and also can put into practice the utility model in other embodiment having departed from these details.
It should be noted that at this, in order to avoid the utility model fuzzy because of unnecessary details, illustrate only in the accompanying drawings with according to the closely-related device structure of scheme of the present utility model and/or treatment step, and eliminate other details little with the utility model relation.
The utility model embodiment provides a kind of pressure transducer for subsurface equipment, as shown in Figure 1, comprising: sensor connector 1, sensor core 2, sensor housing 3, first O-ring seal 4 and the second O-ring seal 5:
Wherein, roughly cylindrically, one end is connected by screw thread and tested instrument sensor connector 1, and the other end is welded on sensor housing, and sensor connector excircle is provided with at least one O-ring seal 5, and O-ring seal 5 makes to seal between sensor connector and tested instrument; Sensor core is fixed in sensor housing, and sensor housing 3 is connected with sensor connector and jointly protects sensor core, effectively improves the reliability of pressure transducer, also plays the effect of fixation of sensor internal circuit board simultaneously.The O-ring seal 4 being arranged on sensor core periphery seals between sensor core and sensor housing, and such fluid can only enter on the diaphragm of sensor core front end by sensor connector endoporus, and sensor core front end diaphragm direct feeling is by measuring pressure.Sensor core 2 one end is provided with sensitive pressure diaphragm, and sensitive pressure diaphragm is stainless steel material, can the corrosion of oil resistant.The other end is provided with signal output device, and the joining distal ends of sensitive pressure diaphragm and the cylindric endoporus of sensor connector, signal output device is connected with the circuit board being fixed on sensor housing 3 inside.Pressure transducer is directly by diaphragm impression by measuring pressure.O-ring seal 4 on sensor core stops oil to enter sensor housing night.
The pressure transducer for subsurface equipment that the utility model embodiment provides, sensor connector connects together by welding with sensor outer housing, and is fixedly packaged within joint and shell by the periphery of sensor core, effectively improves the reliability of pressure transducer.Seal between sensor connector and tested instrument, down-hole fluid enters sensor internal along the cylindric endoporus of sensor connector, seal between sensor core and sensor housing, sensitive pressure diaphragm on sensor core is subject to the extruding of fluid, inner bridge circuit is occurred uneven, sensor circuit 3 sensitivity is to uneven, and output voltage, effectively improves the precision of pressure transducer.
As above the feature described for a kind of embodiment and/or illustrate can use in one or more other embodiment in same or similar mode, and/or combines with the feature in other embodiment or the feature substituted in other embodiment uses.
Should emphasize, term " comprises/comprises " existence referring to feature, one integral piece, step or assembly when using herein, but does not get rid of one or more further feature, one integral piece, step, assembly or its existence of combining or additional.
Many feature and advantage of these embodiments are clearly according to this detailed description, and therefore claims are intended to all these feature and advantage fallen in its true spirit and scope covering these embodiments.In addition, owing to those skilled in the art will find apparent that a lot of amendment and changing, therefore not embodiment of the present utility model to be limited to precision architecture that is illustrated and that describe and operation, but can contain and fall into all suitable modifications within the scope of it and equivalent.
The unspecified part of the utility model is known to the skilled person technology.
Claims (1)
1. for a pressure transducer for subsurface equipment, it is characterized in that, comprising: sensor connector, sensor core, sensor housing, the first O-ring seal and the second O-ring seal;
Wherein, roughly cylindrically, sensor one end is connected by screw thread and tested instrument sensor connector, and the sensor other end is welded on sensor housing, sensor connector excircle is provided with at least one O-ring seal, and O-ring seal makes to seal between sensor connector and tested instrument; Sensor core is fixed in sensor housing, the O-ring seal being arranged on sensor core periphery seals between sensor core and sensor housing, sensor core one end is provided with sensitive pressure diaphragm, sensitive pressure diaphragm is stainless steel material, the other end is provided with signal output device, the joining distal ends of sensitive pressure diaphragm and the cylindric endoporus of sensor connector, signal output device is connected with the circuit board being fixed on sensor housing inside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478143.9U CN204154434U (en) | 2014-08-21 | 2014-08-21 | For the pressure transducer of subsurface equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420478143.9U CN204154434U (en) | 2014-08-21 | 2014-08-21 | For the pressure transducer of subsurface equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204154434U true CN204154434U (en) | 2015-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420478143.9U Active CN204154434U (en) | 2014-08-21 | 2014-08-21 | For the pressure transducer of subsurface equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN204154434U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203255A (en) * | 2015-09-18 | 2015-12-30 | 华北水利水电大学 | Pressure sensor for underground measurement |
| CN109025971A (en) * | 2018-04-28 | 2018-12-18 | 中国石油天然气股份有限公司 | Drilling pressure detection device and its diaphragm applied force mechanism |
-
2014
- 2014-08-21 CN CN201420478143.9U patent/CN204154434U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105203255A (en) * | 2015-09-18 | 2015-12-30 | 华北水利水电大学 | Pressure sensor for underground measurement |
| CN109025971A (en) * | 2018-04-28 | 2018-12-18 | 中国石油天然气股份有限公司 | Drilling pressure detection device and its diaphragm applied force mechanism |
| CN109025971B (en) * | 2018-04-28 | 2022-02-01 | 中国石油天然气股份有限公司 | Drilling pressure detection device and diaphragm stress mechanism thereof |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |