CN108896130A - A kind of small-diameter deep well liquidometer and its processing method - Google Patents
A kind of small-diameter deep well liquidometer and its processing method Download PDFInfo
- Publication number
- CN108896130A CN108896130A CN201810632783.3A CN201810632783A CN108896130A CN 108896130 A CN108896130 A CN 108896130A CN 201810632783 A CN201810632783 A CN 201810632783A CN 108896130 A CN108896130 A CN 108896130A
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- Prior art keywords
- conditioning plate
- pressure sensor
- conducting wire
- liquidometer
- plate casing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/14—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measurement of pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A kind of small-diameter deep well liquidometer and its processing method, liquidometer includes pressure sensor, pressure sensor is connected by transducer signal conditioning plate with ventilation cable, conditioning plate casing is welded at the top of pressure sensor, transducer signal conditioning plate is installed in conditioning plate casing, and the conditioning plate casing other end is welded with conducting wire fixing sleeve, and ventilation cable is connected in conducting wire fixing sleeve, pressure sensor bottom is welded with welding back seat, and the welding back seat other end is connected with water supply connector.Conditioning plate casing and welding back seat are welded on pressure sensor both ends, temperature is no more than 150 DEG C, carry out pressure leakage detection, a V-groove is processed, transducer signal conditioning plate and pressure sensor are connected, carries out signal condition, welding lead fixing sleeve, pressure leakage detection is carried out again, and small-diameter deep well liquidometer is made in encapsulation ventilation cable.The deep-well liquidometer is small in size, high reliablity, good seal performance, can bear high static pressure and big overload pressure.
Description
Technical field
The invention belongs to fluid level transmitter manufacturing technology fields, are related to a kind of deep-well fluid level transmitter, and in particular to a kind of
Applied to deep-well level gauging, the medium compatible with 316L stainless steel material can be detected and be believed the pressure measured
Number it is transferred to the small-diameter deep well liquidometer of control system；The invention further relates to a kind of processing methods of deep-well liquidometer.
Background technique
With the continuous development of industrial instrument, the throw-in type liquid transmitter product currently used for measuring liquid level has compared
Maturation, but measurement range is all concentrated mainly on 1m between 100m, and product diameter is all in 27mm or so, using
The assembly method of " O " circle sealing, has as the pressure increases into water hidden danger, is not suitable for deep-well measurement.
Summary of the invention
The object of the present invention is to provide a kind of small-diameter deep well liquid positions to fathom up to 200 meters, maximum gauge 19mm
Meter.
It is a further object to provide a kind of processing methods of above-mentioned deep-well liquidometer.
To achieve the above object, the technical scheme adopted by the invention is that：A kind of small-diameter deep well liquidometer, including pressure
Sensor, pressure sensor top are welded with the conditioning plate casing of tubular, transducer signal conditioning are equipped in conditioning plate casing
Plate, the other end of conditioning plate casing are welded with the conducting wire fixing sleeve of tubular, and the inner hole of conducting wire fixing sleeve is stepped hole, the stepped hole
In the hole that is relatively large in diameter be arranged far from conditioning plate casing, interference is equipped with ventilation in the lesser hole of diameter in conducting wire fixed cover endoporus
Cable, the one end for cable of ventilating and the lesser hole of diameter in conducting wire fixed cover endoporus are affixed, and the other end of cable of ventilating is from conducting wire
Fixing sleeve stretches out outside conducting wire fixing sleeve far from one end of conditioning plate casing, is relatively large in diameter in ventilate cable and conducting wire fixed cover endoporus
Bore dia have gap, in the gap, along the direction far from conditioning plate casing, to be disposed with the first conducting wire sealing ring, conducting wire close
Envelope compression ring, the second conducting wire sealing ring and wire fixing part, wire fixing part are connected with conducting wire fixing sleeve；Transducer signal tune
Reason plate is connected by conducting wire with pressure sensor towards the side of pressure sensor, and transducer signal conditioning plate is electric towards ventilation
The side of cable is connected by route with ventilation cable；The bottom of pressure sensor is welded with the welding back seat of tubular, after welding
The other end of seat is connected with barrel-shaped water supply connector, and water supply connector is connect with welding back seat.
Another technical solution of the present invention is：A kind of processing method of above-mentioned small-diameter deep well liquidometer：It will
The conditioning plate casing of tubular and the welding back seat of tubular are respectively welded in the top and bottom of pressure sensor, welding process,
Temperature is no more than 150 DEG C；It after the completion of welding, hunts leak under 1~2MPa pressure, is placed in the ring that temperature is 80 DEG C~100 DEG C
In border after aging 8~12 hours, transducer signal conditioning plate is connect with pressure sensor, after carrying out signal condition, by pick-up
Device signal regulating panel is fixed in conditioning plate casing, then, in the other end welding lead fixing sleeve of conditioning plate casing, is existed again
It hunts leak under 1~2MPa pressure, completes the processing of deep-well liquidometer main body, later, encapsulate cable according to liquidometer in the prior art
The process of line, encapsulation ventilation cable, is made small-diameter deep well liquidometer in the deep-well liquidometer main body.
Deep-well liquidometer of the present invention uses to be welded at diffusion silicon pressure sensor both ends, in sensor and shell fixation procedure
Screw fixation method is not used, product reliability is increased, internal diameter can be inserted directly into and only have the pipeline of 20mm to go deep into shaft bottom progress liquid
Position measurement.And it is welded on existing sensor, is conducive to produce in enormous quantities, the production cycle is fast, and range is flexible.
Detailed description of the invention
Fig. 1 is the schematic diagram of deep-well liquidometer of the present invention.
Fig. 2 is the schematic diagram that two V-shaped grooves are arranged in deep-well liquidometer of the present invention on pressure sensor.
Fig. 3 is that the schematic diagram that V-shaped groove is arranged on back seat is welded in deep-well liquidometer of the present invention.
Fig. 4 is the schematic diagram that V-shaped groove is arranged in deep-well liquidometer of the present invention on conditioning plate casing.
In figure：1. water supply connector, 2. welding back seats, 3. pressure sensors, 4. conditioning plate casings, the conditioning of 5. transducer signals
Plate, 6. conducting wire fixing sleeves, 7. first conducting wire sealing rings, 8. conducting wires seal compression ring, 9. second conducting wire sealing rings, and 10. conducting wires are consolidated
Determine part, 11. ventilation cables, 12. first V-shaped grooves, 13. second V-shaped grooves, 14. third V-shaped grooves, 15. the 4th V-shaped grooves.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Called putting-into-type liquid level meter in the prior art uses assembling structure, is sealed between shell using " O " type sealing ring, can not
Accomplish volume very little, and has as the pressure increases into water, for a long time using there is the problems such as sealing ring aging.It is above-mentioned in order to overcome
Problems of the prior art, the present invention provides a kind of small-diameter deep well liquidometers as shown in Figure 1.The deep-well liquidometer
Including pressure sensor 3, the top of pressure sensor 3 is welded with the conditioning plate casing 4 of tubular, is equipped in conditioning plate casing 4
Transducer signal conditioning plate 5, the other end of conditioning plate casing 4 are welded with the conducting wire fixing sleeve 6 of tubular, conducting wire fixing sleeve 6 it is interior
Hole is stepped hole, and the hole being relatively large in diameter in the stepped hole is arranged far from conditioning plate casing 4, in 6 inner hole of conducting wire fixing sleeve diameter compared with
Interference is equipped with ventilation cable 11 in small hole, the lesser hole of diameter in the one end for cable 11 of ventilating and 6 inner hole of conducting wire fixing sleeve
Affixed, the other end for cable 11 of ventilating stretches out outside conducting wire fixing sleeve 6 from conducting wire fixing sleeve 6 far from one end of conditioning plate casing 4, leads to
The bore dia being relatively large in diameter in pneumoelectric cable 11 and 6 inner hole of conducting wire fixing sleeve has gap, in the gap, along far from conditioning plate casing 4
Direction be disposed with the first conducting wire sealing ring 7, conducting wire sealing compression ring 8, the second conducting wire sealing ring 9 and wire fixing part
10, the first conducting wire sealing ring 7, conducting wire sealing compression ring 8, the second conducting wire sealing ring 9 and wire fixing part 10 are sleeved on ventilation
On cable 11, and wire fixing part 10 is connected with conducting wire fixing sleeve 6；Transducer signal conditioning plate 5 is towards pressure sensor 3
Side is connected by conducting wire with pressure sensor 3, and the side of transducer signal conditioning plate 5 towards ventilation cable 11 passes through route
It is connected with ventilation cable 11.
Wire fixing part 10 can use hollow bolt.
The bottom of pressure sensor 3 is welded with the welding back seat 2 of tubular, and the other end of welding back seat 2 is connected with barrel-shaped
Water supply connector 1, water supply connector 1 are threadedly coupled with welding back seat 2.
The outer diameter of the outer diameter and conditioning plate casing 4 that weld back seat 2 is respectively less than the outer diameter for being equal to pressure sensor 3.
The first V-shaped groove 12 and the second V-shaped groove 13 are machined on the side wall of pressure sensor 3, the first V-shaped groove 12 is located at pressure
Sensor 3 is towards on the side wall of welding 2 one end of back seat, and 12 center line of the first V-shaped groove and pressure sensor 3 are towards welding back seat 2
The distance between one end end face is 1mm, and the second V-shaped groove 13 is located at side wall of the pressure sensor 3 towards 4 one end of conditioning plate casing
On, the second V-shaped groove 13 and pressure sensor 3 towards the distance between 4 one end end face of conditioning plate casing be 1mm, shown in Fig. 2；Weldering
It connects and is machined with third V-shaped groove 14 on the side wall of back seat 2,14 center line of third V-shaped groove and welding back seat 2 are towards pressure sensor 3
The distance between one end end face is 1mm, shown in Fig. 3；The 4th V-shaped groove 15, the 4th V-arrangement are machined on the side wall of conditioning plate casing 4
15 center line of slot and conditioning plate casing 4 towards the distance between 3 one end end face of pressure sensor be 1mm, shown in Fig. 4.
The present invention also provides a kind of processing methods of above-mentioned deep-well liquidometer, specially：
With micro beam plasma welding, the welding back seat 2 of the conditioning plate casing 4 of tubular and tubular is respectively welded in pressure sensor 3
Top and bottom, in welding process, temperature is no more than 150 DEG C, and cannot make to sensor chip and sensor compensation circuit
At damage；It after the completion of welding, hunts leak under 1~2MPa pressure, must not there is phenomena such as gas leakage trachoma；In pressure sensor 3
Working depth is all the first V-shaped groove 12 and the second V-shaped groove 13 of 0.5mm on the side wall at both ends, is added on the side wall of seat 2 after welding
Work depth is the third V-shaped groove 14 of 0.5mm, and working depth is the 4th V-shaped groove 15 of 0.5mm on the side wall of conditioning plate casing 4,
All V-shaped grooves play heat spreading function；Obtain semi-finished product；By the semi-finished product be placed in temperature be aging 8 in 80 DEG C~100 DEG C of environment~
12 hours, to discharge welding stress, after the completion of aging, transducer signal conditioning plate 5 is connect with pressure sensor 3, carries out letter
Number conditioning, improve for system need signal：4 ... 20mA or 0.5 ... 4.5V, after the completion of signal condition, by transducer signal
Conditioning plate 5 is fixed in conditioning plate casing 4, then, in the other end welding lead fixing sleeve 6 of conditioning plate casing 4, again 1
It hunts leak under~2MPa pressure, completes the processing of deep-well liquidometer main body, later, encapsulate cable according to liquidometer in the prior art
Process, in the deep-well liquidometer main body encapsulation ventilation cable 11, be made small-diameter deep well liquidometer.
Main component welding back seat 2, pressure sensor 3, conditioning plate casing 4 and conducting wire in deep-well liquidometer of the present invention is solid
Surely set 6 is fixed together by welding.Its entire outer diameter is big as pressure sensor diameter, maximum gauge 19mm,
Avoid the various hidden danger of quality of assembling structure bring.The deep-well liquidometer is small in size, high reliablity, good seal performance, can bear
High static pressure and big overload pressure fathom up to 200 meters, can be inserted directly into internal diameter and only have the pipeline of 20mm to go deep into well
Bottom, suitable for the deep-well level gauging required to installation.
Deep-well liquidometer of the present invention uses diffused-silicon pressure chip for pressure element, by transmitter special conditioning circuit,
To collected sensor signal carry out non-liner revision, temperature-compensating, signal amplification etc. processing modes, complete signal acquisition with
Handle new paragon.Structure uses full welded seal mode, and the minor diameter that can be applied in complex environment, high-precision type deep-well is made
Liquid level product.
Small-diameter deep well liquidometer deep-well liquidometer of the present invention is small in size, high reliablity, good seal performance, can bear height
2~5MPa of static pressure and big 5~10MPa of overload pressure.
Claims (5)
1. a kind of small-diameter deep well liquidometer, which is characterized in that including pressure sensor（3）, pressure sensor（3）Top welding
There is the conditioning plate casing of tubular（4）, conditioning plate casing（4）Transducer signal conditioning plate is inside installed（5）, conditioning plate casing（4）
The other end be welded with the conducting wire fixing sleeve of tubular（6）, conducting wire fixing sleeve（6）Inner hole be stepped hole, diameter in the stepped hole
Biggish hole is far from conditioning plate casing（4）Setting, conducting wire fixing sleeve（6）Interference is equipped with ventilation in the lesser hole of diameter in inner hole
Cable（11）, cable of ventilating（11）One end and conducting wire fixing sleeve（6）The lesser hole of diameter is affixed in inner hole, cable of ventilating（11）
The other end from conducting wire fixing sleeve（6）Far from conditioning plate casing（4）One end stretch out conducting wire fixing sleeve（6）Outside, ventilation cable
（11）With conducting wire fixing sleeve（6）The bore dia being relatively large in diameter in inner hole has gap, in the gap, along far from conditioning plate casing（4）
Direction be disposed with the first conducting wire sealing ring（7）, conducting wire seal compression ring（8）, the second conducting wire sealing ring（9）It is solid with conducting wire
Determine part（10）, wire fixing part（10）With conducting wire fixing sleeve（6）It is connected；Transducer signal conditioning plate（5）Towards pressure sensing
Device（3）Side pass through conducting wire and pressure sensor（3）It is connected, transducer signal conditioning plate（5）Towards ventilation cable（11）
Side by route and ventilation cable（11）It is connected；Pressure sensor（3）Bottom be welded with the welding back seat of tubular
（2）, weld back seat（2）The other end be connected with barrel-shaped water supply connector（1）, water supply connector（1）With welding back seat（2）Connection.
2. small-diameter deep well liquidometer according to claim 1, which is characterized in that the welding back seat（2）Outer diameter and
Conditioning plate casing（4）Outer diameter be respectively less than and be equal to pressure sensor（3）Outer diameter.
3. small-diameter deep well liquidometer according to claim 1 or 2, which is characterized in that the pressure sensor（3）Side
The first V-shaped groove is machined on wall（12）With the second V-shaped groove（13）, the first V-shaped groove（12）Positioned at pressure sensor（3）Towards welding
Back seat（2）On the side wall of one end, the first V-shaped groove（12）Center line and pressure sensor（3）Towards welding back seat（2）One end end face
The distance between be 1mm, the second V-shaped groove（13）Positioned at pressure sensor（3）Towards conditioning plate casing（4）On the side wall of one end,
Second V-shaped groove（13）With pressure sensor（3）Towards conditioning plate casing（4）The distance between one end end face is 1mm；Weld back seat
（2）Side wall on be machined with third V-shaped groove（14）, third V-shaped groove（14）Center line and welding back seat（2）Towards pressure sensor
（3）The distance between one end end face is 1mm；Conditioning plate casing（4）Side wall on be machined with the 4th V-shaped groove（15）, the 4th V-shaped groove
（15）Center line and conditioning plate casing（4）Towards pressure sensor（3）The distance between one end end face is 1mm.
4. the processing method of small-diameter deep well liquidometer described in a kind of claim 1, which is characterized in that the processing method is：It will
The conditioning plate casing of tubular（4）With the welding back seat of tubular（2）It is respectively welded in pressure sensor（3）Top and bottom, weldering
In termination process, temperature is no more than 150 DEG C；After the completion of welding, hunt leak under 1~2MPa pressure, be placed in temperature be 80 DEG C~
In 100 DEG C of environment after aging 8~12 hours, by transducer signal conditioning plate（5）With pressure sensor（3）Connection, carries out letter
Number conditioning after, by transducer signal conditioning plate（5）It is fixed on conditioning plate casing（4）It is interior, then, in conditioning plate casing（4）It is another
One end welding lead fixing sleeve（6）, it hunts leak under 1~2MPa pressure again, completes the processing of deep-well liquidometer main body, later,
According to the process of the encapsulation cable of liquidometer in the prior art, the encapsulation ventilation cable in the deep-well liquidometer main body（11）, system
Obtain small-diameter deep well liquidometer.
5. the processing method of small-diameter deep well liquidometer according to claim 4, which is characterized in that use microplasma
Weldering, by the conditioning plate casing of tubular（4）With the welding back seat of tubular（2）It is respectively welded in pressure sensor（3）Top and bottom
Portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632783.3A CN108896130A (en) | 2018-06-20 | 2018-06-20 | A kind of small-diameter deep well liquidometer and its processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810632783.3A CN108896130A (en) | 2018-06-20 | 2018-06-20 | A kind of small-diameter deep well liquidometer and its processing method |
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| Publication Number | Publication Date |
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| CN108896130A true CN108896130A (en) | 2018-11-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810632783.3A Pending CN108896130A (en) | 2018-06-20 | 2018-06-20 | A kind of small-diameter deep well liquidometer and its processing method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103031A (en) * | 2020-01-02 | 2020-05-05 | 北京瑞赛长城航空测控技术有限公司 | Intrinsic safety type oil-water interface detection probe |
| CN113124958A (en) * | 2020-11-29 | 2021-07-16 | 华电水务元氏有限公司 | Novel pressure type liquid level meter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203672552U (en) * | 2013-12-06 | 2014-06-25 | 天水华天传感器有限公司 | Pressure transmitter |
| CN207215363U (en) * | 2017-09-12 | 2018-04-10 | 天水华天传感器有限公司 | One kind is able to bear strong corrosion fluid level transmitter |
-
2018
- 2018-06-20 CN CN201810632783.3A patent/CN108896130A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203672552U (en) * | 2013-12-06 | 2014-06-25 | 天水华天传感器有限公司 | Pressure transmitter |
| CN207215363U (en) * | 2017-09-12 | 2018-04-10 | 天水华天传感器有限公司 | One kind is able to bear strong corrosion fluid level transmitter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111103031A (en) * | 2020-01-02 | 2020-05-05 | 北京瑞赛长城航空测控技术有限公司 | Intrinsic safety type oil-water interface detection probe |
| CN113124958A (en) * | 2020-11-29 | 2021-07-16 | 华电水务元氏有限公司 | Novel pressure type liquid level meter |
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Application publication date: 20181127 |