CN207215363U - One kind is able to bear strong corrosion fluid level transmitter - Google Patents
One kind is able to bear strong corrosion fluid level transmitter Download PDFInfo
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- CN207215363U CN207215363U CN201721163821.2U CN201721163821U CN207215363U CN 207215363 U CN207215363 U CN 207215363U CN 201721163821 U CN201721163821 U CN 201721163821U CN 207215363 U CN207215363 U CN 207215363U
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- encapsulating housing
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Abstract
It is able to bear strong corrosion fluid level transmitter the utility model discloses one kind, belongs to test and measuring technical field.Including the adaptable integral type encapsulating housing of cavity body structure and its internal each part dimension, the ceramic capacitive sensor connected by wire, conversion circuit module and ventilation cable are provided with the encapsulating housing, ventilate cable part is stretched out outside encapsulating housing, and ecto-entad is arranged rubber ring successively on the ventilation cable in encapsulating housing and rigid cable is fixed and clamped part；Ceramic capacitive sensor is provided with L-type sealing ring away from the ventilation side bottom of cable one, and L-type sealing ring opposite side is compressed by the screw thread hold-down ring for the plasticity that is spirally connected, and screw thread hold-down ring opposite side is spirally connected into pressure protection cap, enters to press protection cap to be provided with into pressure hole.Its encapsulating structure plasticity is combined with rigid phase, and encapsulating housing is integral type structure, and the sealing of ceramic capacitive sensor, from compressing structure, can either meet the job requirement of strong corrosive environment, and sealing reliability is high using the ambient pressure of upside-down mounting.
Description
Technical field
It the utility model is related to test and measuring technical field, specifically one kind is able to bear strong corrosion fluid level transmitter.
Background technology
Transmitter is that pressure medium is acted on the pressure-sensitive diaphragm of sensor, produces diaphragm directly proportional to pressure medium
Micro-displacement, the resistance or electric capacity for making sensor are changed, and this change is detected with electronic circuit, and it is right to change output one
Should be in the standard signal of this pressure, to meet setting for the requirements such as the transmission of information, processing, storage, display, record and control
It is standby.It is made up of pressure element, conversion element and process connector three parts.Current fluid level transmitter of being able to bear strong corrosion is adopted mostly
By the use of ceramic capacitive sensor as pressure element, supporting zero point and full scale compensation, temperature-compensation circuit and change-over circuit will
The pressure conversion of medium is measured into the standard electric signal such as 4-20mA, 0.5-4.5V.Its housing and part use poly- four
Fluoride material, such as：Sealing ring is fluorubber material, and cable is polytetrafluoroethylene (PTFE) ventilation cable.But this corrosion-resistant liquid level becomes
Device encapsulating structure is sent generally to be assembled by multiple polytetrafluoroethylene (PTFE) parts, due to the not easy-adhesion of polytetrafluoroethylplastic plastic, heat
Plasticity, mechanical strength is low, causes its package reliability not high, and media leaks phenomenon easily occurs, transmitter is failed.
Utility model content
The purpose of this utility model is to be directed to above-mentioned technical problem, there is provided one kind is simple and compact for structure, encapsulation is reliable resistance to
Deep-etching fluid level transmitter.
To reach above-mentioned purpose, the utility model uses following technical scheme：One kind is able to bear strong corrosion fluid level transmitter, including
The cavity body structure integral type encapsulating housing adaptable with its internal each part dimension, interior be provided with of the encapsulating housing are connected by wire
Ceramic capacitive sensor and conversion circuit module, conversion circuit module pass through wire connection ventilation cable, ventilate cable
Part is stretched out outside encapsulating housing, and ecto-entad is arranged rubber ring and rigid cable successively on the ventilation cable in encapsulating housing
Be fixed and clamped part；Ceramic capacitive sensor is provided with L-type sealing ring away from the ventilation side bottom of cable one, and L-type sealing ring opposite side leads to
The screw thread hold-down ring for crossing the plasticity that is spirally connected compresses, and screw thread hold-down ring opposite side is spirally connected into pressure protection cap, enter to press protection cap be provided with into
Press hole.
Wherein, above-mentioned rubber ring is two, and being provided with cable between two rubber rings fixes gasket ring, can play and further add
The effect of strong ventilation cable sealing effectiveness.
Conversion circuit module is using the assembling of wiring board protective case, the modular structure of silicon rubber embedding, and wire is silica gel line, energy
Enough avoid condensing via the air of breather pipe into the cavity of ventilation cable and cause properties of product to decline.
Cable is fixed and clamped, and to fix gasket ring be Stainless steel 316 L materials for part and cable, and its rigidity is good, overcomes working of plastics
The drawbacks of fastening is not easy to compress, is fastened with specific purpose tool from inside, rubber ring is compressed, so as to reach the mesh of sealing ventilation cable
's.Wherein, the cable part that is fixed and clamped is in inside encapsulating housing, does not contact severe corrosive measurement medium, it is whole not influence transmitter
The antiseptic property of body.
Screw thread hold-down ring material is polytetrafluoroethylene (PTFE), and plasticity is good, and extraneous medium pressure is bigger, and it presses to L-type sealing ring
Pressure is bigger, and the pressure that ceramic capacitive sensor is subject to is bigger, and sealing is more reliable.
The beneficial effects of the utility model are：
1st, in fluid level transmitter of the present utility model, encapsulating housing, enter to press protection cap, screw thread hold-down ring and ventilation cable
It is polytetrafluoroethylene (PTFE) material, ceramic condenser diaphragm is high-purity alpha-alumina ceramic material, and L-type sealing ring, rubber ring are fluorine rubber
Glue material matter；Cable is fixed and clamped, and to fix gasket ring be Stainless steel 316 L materials for part and cable, and plasticity is combined with rigid phase, can either
Meet the job requirement of strong corrosive environment, and can reaches the purpose of hermetically-sealed cable line and ceramic capacitive sensor, and packaging effect is good
It is good.
2nd, encapsulating housing is the integral structure of single injection-molded, compared with the conventional products of market, cable of only ventilating
Sealing, ceramic capacitive sensor seal two openings, and sealing using the outer of upside-down mounting for ceramic capacitive sensor big opening
Boundary's pressure is from compressing structure, and compact-sized, sealing reliability is high.
3rd, conversion circuit module draws input and output lead using silica gel line, and change-over panel loads plastic casing and uses silicon rubber
Embedding, conversion circuit module is formed, avoid cavity air inlet condensation, the problem of causing properties of product to decline.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Reference：1st, encapsulating housing；2nd, ventilation cable；3rd, rubber ring；4th, cable fixes gasket ring；5th, cable fixes pressure
Tight part；6th, conversion circuit module；7th, ceramic capacitive sensor；8th, L-type sealing ring；9th, screw thread hold-down ring；10th, enter to press protection cap；
11st, enter to press hole.
Embodiment
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
The fluid level transmitter as shown in figure 1, one kind is able to bear strong corrosion, its material contacted with measured medium are with resistance to strong rotten
The polytetrafluoroethylene (PTFE) of corrosion, including the encapsulating housing that single injection-molded, cavity body structure are adaptable with its internal each part dimension
1, the encapsulating housing 1 is interior to be provided with the ceramic capacitive sensor 7 connected by wire and conversion circuit module 6, conversion circuit module 6
Using the modular structure of the assembling of wiring board protective case, silicon rubber embedding, conversion circuit module 6 connects ventilation cable by silica gel line
Line 2, ventilation cable 2 part are stretched out outside encapsulating housing 1, and ecto-entad is arranged successively on the ventilation cable 2 in encapsulating housing 1
Two rubber rings 3 and the cable of Stainless steel 316 L materials are fixed and clamped part 5, and Stainless steel 316 L materials are provided between two rubber rings 3
The cable of matter fixes gasket ring 4；Ceramic capacitive sensor 7 is provided with L-type sealing ring 8 away from the ventilation side bottom of cable 2 one, and L-type is close
The opposite side of seal 8 is compressed by the screw thread hold-down ring 9 for the polytetrafluoroethylene (PTFE) material that is spirally connected, and the opposite side of screw thread hold-down ring 9 is spirally connected into pressure
Protection cap 10, enter to press protection cap 10 to be provided with into pressure hole 11.
The be able to bear strong corrosion making step of fluid level transmitter of the utility model uses the form of upside-down mounting, i.e., the assembling of each part is suitable
Sequence is followed successively by：Encapsulation ventilation cable 2- assembling conversion circuit module 6- assembling ceramic capacitance sensors 7- assembling L-type sealings
Circle 8- assemblings screw thread hold-down ring 9- fits into pressure protection cap 10, ceramic capacitive sensor 7, L-type sealing ring 8, screw thread hold-down ring 9
From compressing structure, ambient pressure is higher, and the sealing property of ceramic capacitive sensor 7 is better with entering to press the composition ambient pressure of protection cap 10.
There is internal thread on the utility model screw thread hold-down ring 9, debugged available for pressurization, pressure is threaded into after the completion of debugging and is protected
Protecting cover 10, the sensor diaphragm on ceramic capacitive sensor 7 is protected, enter to press protection cap 10 to enter to press hole 11 to enter pressure provided with four；
Conversion circuit module 6 uses digital conversion circuit plate, is debugged after the completion of assembling by the rear portion ventilation output end of cable 2.
The utility model is simple and compact for structure, and it is firm to be connected between each part, has extremely strong decay resistance, energy
Enough measurements and control for adapting to the corrosive atmosphere liquid levels such as acid, alkali, salt.
Claims (3)
- The fluid level transmitter 1. one kind is able to bear strong corrosion, including encapsulating housing（1）, the encapsulating housing（1）Interior be provided with is connected by wire The ceramic capacitive sensor connect（7）And conversion circuit module（6）, conversion circuit module（6）Ventilation cable is connected by wire （2）, the ventilation cable（2）Encapsulating housing is stretched out in part（1）Outside, it is characterised in that：The encapsulating housing（1）For integral type Structure, the size of its cavity body structure and internal each part are adapted, encapsulating housing（1）Interior ventilation cable（2）On by extroversion Rubber ring is inside arranged successively（3）It is fixed and clamped part with rigid cable（5）；The ceramic capacitive sensor（7）Away from ventilation electricity Cable（2）One side bottom is provided with L-type sealing ring（8）, L-type sealing ring（8）The screw thread hold-down ring that opposite side passes through the plasticity that is spirally connected（9） Compress, screw thread hold-down ring（9）Opposite side is spirally connected into pressure protection cap（10）, enter to press protection cap（10）It is provided with into pressure hole（11）.
- The fluid level transmitter 2. one kind according to claim 1 is able to bear strong corrosion, it is characterised in that：The rubber ring（3）For two It is individual, and two rubber rings（3）Between be provided with rigid cable fix gasket ring（4）.
- The fluid level transmitter 3. one kind according to claim 1 is able to bear strong corrosion, it is characterised in that：The conversion circuit module （6）Using the modular structure of the assembling of wiring board protective case, silicon rubber embedding, the wire is silica gel line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163821.2U CN207215363U (en) | 2017-09-12 | 2017-09-12 | One kind is able to bear strong corrosion fluid level transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721163821.2U CN207215363U (en) | 2017-09-12 | 2017-09-12 | One kind is able to bear strong corrosion fluid level transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207215363U true CN207215363U (en) | 2018-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721163821.2U Active CN207215363U (en) | 2017-09-12 | 2017-09-12 | One kind is able to bear strong corrosion fluid level transmitter |
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| CN (1) | CN207215363U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760137A (en) * | 2018-07-25 | 2018-11-06 | 浙江洛丁森智能科技有限公司 | A kind of teletransmission component and the teletransmission pressure transmitter including the teletransmission component |
| CN108896130A (en) * | 2018-06-20 | 2018-11-27 | 天水师范学院 | A kind of small-diameter deep well liquidometer and its processing method |
-
2017
- 2017-09-12 CN CN201721163821.2U patent/CN207215363U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108896130A (en) * | 2018-06-20 | 2018-11-27 | 天水师范学院 | A kind of small-diameter deep well liquidometer and its processing method |
| CN108760137A (en) * | 2018-07-25 | 2018-11-06 | 浙江洛丁森智能科技有限公司 | A kind of teletransmission component and the teletransmission pressure transmitter including the teletransmission component |
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