CN205317397U - Formula hart bus measuring instrument can be enlargied in piston response - Google Patents
Formula hart bus measuring instrument can be enlargied in piston response Download PDFInfo
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- CN205317397U CN205317397U CN201520962219.XU CN201520962219U CN205317397U CN 205317397 U CN205317397 U CN 205317397U CN 201520962219 U CN201520962219 U CN 201520962219U CN 205317397 U CN205317397 U CN 205317397U
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Abstract
The utility model relates to a formula hart bus measuring instrument can be enlargied in piston response, including body, adaptor, screw base, circuit board, hou gai, line cord, clamping ring, sensor base, include still that the pressure sensing adjusts the pole and draw the pressure piston, draw and press the piston to install in screw base inner chamber, draw that to press piston, sensor base be medium chamber with the seal chamber that the screw base encloses, its and sensor base's medium runner through connections draws the outside of pressing the piston and is equipped with pressure sensing regulation pole, the cross -sectional area of pressure sensing regulation pole is less than medium chamber's cross -sectional area. The utility model discloses a piston draws the pressure structure, and through the conduction of inside silicon oil, the pressure sensing of high accuracy monocrystalline silicon sensing can effectively prevent the sluggishness, and measurement accuracy is high. Drawing and pressing two -chamber two pass seal structure, interrelated is sealed to twice simultaneously, and each other is the effect. It can enlarge to measure the range in addition, presses the piston reducing realization big pressure function of journey sensor measurements in a small amount through drawing, solves high -voltage field resultant journey and chooses the bottleneck for use.
Description
Technical field
This utility model relates to a kind of oil field development and uses, tunnelling shield machine is used, the big pressurized hydraulic sensor technical field such as deep sea submarine, the operations such as specifically a kind of Oil/gas Well formation testing, exploitation, or shield machine tunnelling, or a kind of piston sensing used when abyssal depth is measured can amplifying type Hart bus measurement instrument.
Background technology
Pressure transducer is a kind of sensor the most commonly used in industrial practice, instrument and meter control. And it is widely used in oil well industry, for measuring the concrete pressure condition of hole condition, it it is requisite measurement device under oil well, owing to subsurface environment is complicated, and every time downhole instrument working time of going into the well is longer, therefore the range of pressure transducer, precision and reliability has significantly high requirement, but current pressure transducer is when carrying out underground survey, no matter precision or reliability, all can not meet requirement. In range, the structure of fixed amount formula especially, namely cannot use if running into pressure overpressure transducer range.
The soil pressure test mode that existing market uses adopts the mode of metal strain plate sensing to realize measuring, and its response speed is slow, and hysteresis phenomenon is serious, and certainty of measurement and consistent performance poor, unstable properties, overload protection is weak. Deep-well, deep hole oil drilling etc. is difficult to manufacture big pressure sensor. Reduce investment outlay and manufacture especially big pressure transducer reliable and stable use, stability and increase its range measurement scope and become current problem demanding prompt solution.
Utility model content
For above-mentioned situation, this utility model provides a kind of piston sensing amplifying type Hart bus can measure instrument, first, piston type impulse structure, by internal silicone oil conduction, high accuracy monocrystal silicon sensing pressure-sensitive, pressure-responsive speed is fast, effectively preventing sluggishness, certainty of measurement is high, meets and uses under the mal-conditions such as sandstone, impurity, mud.Band center diaphragm overload protection simultaneously, the sensor (including 1kPa) within 10MPa can overload protection to 16MPa. Second, impulse two-chamber double-channel sealing structure, two chambeies are full of vacuum silicone oil, and a chamber ensures piston proper lubrication, the efficient conducting pressure in another chamber; Impulse mouth forward end seal can effectively prevent external dust, impurity, the generation of fouling and entrance, it is ensured that piston conduction Effec-tive Function, and rear end seals together and ensures inner vacuum silicone oil zero leakage, and two seals is interrelated simultaneously, acts on each other. 3rd, measure range and can amplify, realize the big pressure functional of small-range sensor measurement by piston reducing, solve high-voltage field resultant journey and select bottleneck.
To achieve these goals, the technical solution of the utility model is as follows:
A kind of piston sensing amplifying type Hart bus can measure instrument, including body, adaptor, screw base, wiring board, bonnet, line cord, pressure ring, sensor base, body one end is provided with screw base, it is connected by adaptor between screw base with body, the body other end is provided with bonnet, line cord it is provided through in bonnet, line cord is connected by pressure ring compression with bonnet, tubular body is provided with sensor base, medium runner it is provided with in sensor base, sensor base is provided with inductor, wiring board is installed on rear side of inductor, wiring board electrically connects with line cord, also include pressure-sensitive adjusting rod and impulse piston, impulse piston is arranged in screw base inner chamber, impulse piston, the defined sealing cavity of sensor base and screw base is dielectric cavity, it is through with the medium runner of sensor base is connected, the outside of impulse piston is provided with pressure-sensitive adjusting rod, the cross-sectional area of described pressure-sensitive adjusting rod is less than the cross-sectional area of dielectric cavity.
Described inductor is high accuracy monocrystal silicon sensing inductor, and pressure-responsive speed is fast, can effectively prevent sluggishness, and certainty of measurement is high, and the collision that impulse piston structure can meet under the mal-conditions such as sandstone, impurity, mud scratches use.
Medium in described dielectric cavity and medium runner is silicone oil.
Further, being additionally provided with connection keeper, center diaphragm, deformation protection chamber inside described screw base, center diaphragm is located at deformation protection intracavity, connects keeper in order to connect screw base outer end and deformation protection chamber. Cell overload protective effect can be played. The sensor (including 10kPa) within 10MPa can overload protection to 16MPa, by amplify can realize larger range of protection.
Described deformation protection intracavity is provided with flow of ambient air runner.
Also including O RunddichtringO, O RunddichtringO is arranged in the groove of impulse piston and on pressure-sensitive adjusting rod, it is ensured that overall sealing property.
Also including lubrication runner, lubrication runner includes the annular channel of impulse piston, sensor base and inductor outer rim and screw base and the formation of adaptor inwall and lubrication through to annular channel and dielectric cavity is connected pipeline.
Being additionally provided with second medium cavity between described inductor and sensor base, second medium cavity is through with the medium runner of sensor base to be connected.
Being provided with two medium pipelines on described inductor, one through is connected to wiring board, and another is connected to lubrication and connects pipeline.
Also include sealing cone blocking, seal cone blocking and be arranged between pressure ring and bonnet.
Preferably, described inductor is welded in sensor base, and sensor base is welded in screw base, adaptor respectively with screw base and pipe welding.
The invention have the advantage that first, piston type impulse structure, piston face spraying Teflon dragon picture layer, by internal silicone oil conduction, high accuracy monocrystal silicon sensing pressure-sensitive, pressure-responsive speed is fast, effectively preventing sluggishness, certainty of measurement is high, meets and uses under the mal-conditions such as sandstone, impurity, mud.Band center diaphragm overload protection simultaneously, the sensor (including 1kPa) within 10MPa can overload protection to 16MPa.
Second, impulse two-chamber double-channel sealing structure, dielectric cavity and second medium chamber are full of vacuum silicone oil, and dielectric cavity ensures impulse piston proper lubrication, the efficient conducting pressure in second medium chamber; Impulse mouth forward end seal can effectively prevent external dust, impurity, the generation of fouling and entrance, it is ensured that impulse piston conduction Effec-tive Function, and rear end seals together and ensures inner vacuum silicone oil zero leakage, and two seals is interrelated simultaneously, acts on each other.
3rd, to measure range and can amplify, realize the big pressure functional of small-range sensor measurement by impulse piston reducing and installation end second time piston seal, reducing piston reducing ratio (amplification ratio) can calculate voluntarily and be convenient for changing. Solve high-voltage field resultant journey and select bottleneck.
4th, the HART bus intellectuality parametric calibration that wiring board adopts 430 low power consumption control devices to be core compensates system with high/low temperature and combines, and man-machine interface is processed especially, it is ensured that carry out low-power consumption global function compensation for calibrating errors by HART bus and ensure high accuracy.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is partial enlarged drawing of the present utility model.
Fig. 3 of the present utility model presses key pressure limiting circuit figure.
Fig. 4 is that this utility model is based on two grades of Anti-surging miniaturized circuit figure.
Fig. 5 is this utility model HART bus circuit figure based on 430 controllers.
In the drawings: 1-O RunddichtringO, 2-impulse piston, 3-screw base, 4-sensor base; 5-second medium chamber, 6-inductor, 7-passes fitting, 8-body; 9-wiring board, 10-pressure ring, 11-seals cone blocking, 12-line cord; 13-lubricates runner, 14-bonnet, 15-pressure-sensitive adjusting rod, 16-O RunddichtringO; 17-dielectric cavity, 18-lubrication connects pipeline, 19-medium runner, 20-medium pipeline; 21-connects keeper, 22-center diaphragm, 23-deformation protection chamber, 24-flow of ambient air runner.
Detailed description of the invention
For the technological means making this utility model realize, creation characteristic, reach purpose and effect and be easy to understand, below in conjunction with being specifically illustrating, the present invention is expanded on further.
Referring to Fig. 1 ~ Fig. 2, a kind of piston sensing amplifying type Hart bus can measure instrument, including body, adaptor, screw base, wiring board, bonnet, line cord, pressure ring, sensor base, body one end is provided with screw base, it is connected by adaptor between screw base with body, the body other end is provided with bonnet, line cord it is provided through in bonnet, line cord is connected by pressure ring compression with bonnet, tubular body is provided with sensor base, medium runner it is provided with in sensor base, sensor base is provided with inductor, wiring board is installed on rear side of inductor, wiring board electrically connects with line cord, also include pressure-sensitive adjusting rod and impulse piston, impulse piston is arranged in screw base inner chamber, impulse piston, the defined sealing cavity of sensor base and screw base is dielectric cavity, it is through with the medium runner of sensor base is connected, the outside of impulse piston is provided with pressure-sensitive adjusting rod, the cross-sectional area of described pressure-sensitive adjusting rod is less than the cross-sectional area of dielectric cavity.
Described inductor is high accuracy monocrystal silicon sensing inductor, and pressure-responsive speed is fast, can effectively prevent sluggishness, and certainty of measurement is high, meets and uses under the mal-conditions such as sandstone, impurity, mud.Be with certain overload protection simultaneously, the sensor (including 1kPa) within 10MPa can overload protection to 16MPa.
Medium in described dielectric cavity and medium runner is silicone oil.
Also including O RunddichtringO, O RunddichtringO is arranged in the groove of impulse piston and on pressure-sensitive adjusting rod, it is ensured that overall sealing property.
Further, being additionally provided with connection keeper, center diaphragm, deformation protection chamber inside described screw base, center diaphragm is located at deformation protection intracavity, connects keeper in order to connect screw base outer end and deformation protection chamber. Center diaphragm overload protective function can be played.
Described deformation protection intracavity is provided with flow of ambient air runner.
Also including lubrication runner, lubrication runner includes the annular channel of impulse piston, sensor base and inductor outer rim and screw base and the formation of adaptor inwall and lubrication through to annular channel and dielectric cavity is connected pipeline.
Being additionally provided with second medium cavity between described inductor and sensor base, second medium cavity is through with the medium runner of sensor base to be connected.
Being provided with two medium pipelines on described inductor, one through is connected to wiring board, and another is connected to lubrication and connects pipeline.
Also include sealing cone blocking, seal cone blocking and be arranged between pressure ring and bonnet.
Preferably, described inductor is welded in sensor base, and sensor base is welded in screw base, adaptor respectively with screw base and pipe welding.
Referring to Fig. 3, further, also including pressure limiting circuit, resistance-capacitance network and stabilivolt combination carry out the pressure limiting of input signal and protection until 48V.
Referring to Fig. 4, further, also including two grades of Anti-surging miniaturized circuits, GDT uses glass discharge vessel, and pressure 1000V is so as to meet the GB requirement to the pressure 500V of shell. Can discharge in surge situation again! Volume is less simultaneously. Power pack adopts the discrete device such as metal-oxide-semiconductor amplifier and benchmark to realize input (up to 58V) on a large scale, and the other power reference IC of reference level produces regulated power supply and reaches the degree of stability of reference power supply.
Referring to Fig. 5, further, HART clock by MCU control synchronize produce, will not communication step-out, HART bus facilitates accurate alignment and remotely adjusts parameter.
The ultimate principle of the present invention, principal character and of the present utility model advantage have more than been shown and described. Skilled person will appreciate that of the industry; this utility model is not restricted to the described embodiments; simply principle of the present utility model described in above-described embodiment and description; under the premise without departing from this utility model spirit and scope, this utility model also has various changes and modifications, and these changes and improvements both fall within claimed the scope of the present invention. The protection domain that this utility model requires is defined by appending claims and equivalent thereof.
Claims (9)
1. a piston sensing amplifying type Hart bus can measure instrument, it is characterized in that, including body, adaptor, screw base, wiring board, bonnet, line cord, pressure ring, sensor base, body one end is provided with screw base, it is connected by adaptor between screw base with body, the body other end is provided with bonnet, line cord it is provided through in bonnet, line cord is connected by pressure ring compression with bonnet, tubular body is provided with sensor base, medium runner it is provided with in sensor base, sensor base is provided with inductor, wiring board is installed on rear side of inductor, wiring board electrically connects with line cord, also include pressure-sensitive adjusting rod and impulse piston, impulse piston is arranged in screw base inner chamber, impulse piston, the defined sealing cavity of sensor base and screw base is dielectric cavity, it is through with the medium runner of sensor base is connected, the outside of impulse piston is provided with pressure-sensitive adjusting rod, the cross-sectional area of described pressure-sensitive adjusting rod is less than the cross-sectional area of dielectric cavity.
2. piston according to claim 1 sensing amplifying type Hart bus can measure instrument, it is characterised in that described inductor is high accuracy monocrystal silicon sensing inductor.
3. piston according to claim 1 sensing amplifying type Hart bus can measure instrument, it is characterised in that the medium in described dielectric cavity and medium runner is silicone oil.
4. piston according to claim 1 sensing amplifying type Hart bus can measure instrument, it is characterised in that also including O RunddichtringO, O RunddichtringO is arranged in the groove of impulse piston and on pressure-sensitive adjusting rod.
5. piston according to claim 1 sensing amplifying type Hart bus can measure instrument, it is characterized in that, also including lubrication runner, lubrication runner includes the annular channel of impulse piston, sensor base and inductor outer rim and screw base and the formation of adaptor inwall and lubrication through to annular channel and dielectric cavity is connected pipeline.
6. piston according to claim 1 sensing amplifying type Hart bus can measure instrument, it is characterised in that being additionally provided with second medium cavity between described inductor and sensor base, second medium cavity is through with the medium runner of sensor base to be connected.
7. piston according to claim 1 sensing amplifying type Hart bus can measure instrument, it is characterised in that being provided with two medium pipelines on described inductor, one through is connected to wiring board, and another is connected to lubrication and connects pipeline.
8. piston according to claim 1 sensing amplifying type Hart bus can measure instrument, it is characterised in that also includes sealing cone blocking, seals cone blocking and be arranged between pressure ring and bonnet.
9. piston according to claim 1 sensing amplifying type Hart bus can measure instrument; it is characterized in that; connection keeper it is additionally provided with inside described screw base; center diaphragm, deformation protection chamber; center diaphragm is located at deformation protection intracavity, connects keeper in order to connect screw base outer end and deformation protection chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962219.XU CN205317397U (en) | 2015-11-27 | 2015-11-27 | Formula hart bus measuring instrument can be enlargied in piston response |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520962219.XU CN205317397U (en) | 2015-11-27 | 2015-11-27 | Formula hart bus measuring instrument can be enlargied in piston response |
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| CN205317397U true CN205317397U (en) | 2016-06-15 |
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| CN201520962219.XU Active CN205317397U (en) | 2015-11-27 | 2015-11-27 | Formula hart bus measuring instrument can be enlargied in piston response |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352650A (en) * | 2015-11-27 | 2016-02-24 | 上海立格仪表有限公司 | Piston induction amplifiable type Hart bus measuring instrument |
| CN112326095A (en) * | 2020-11-03 | 2021-02-05 | 安徽安广电气有限公司 | Monocrystalline silicon pressure transmitter with good waterproof performance |
-
2015
- 2015-11-27 CN CN201520962219.XU patent/CN205317397U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105352650A (en) * | 2015-11-27 | 2016-02-24 | 上海立格仪表有限公司 | Piston induction amplifiable type Hart bus measuring instrument |
| CN112326095A (en) * | 2020-11-03 | 2021-02-05 | 安徽安广电气有限公司 | Monocrystalline silicon pressure transmitter with good waterproof performance |
| CN112326095B (en) * | 2020-11-03 | 2022-05-20 | 安徽安广电气有限公司 | Monocrystalline silicon pressure transmitter with good waterproof performance |
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| GR01 | Patent grant |