CN209166707U - Explosion-proof pressure transmitter - Google Patents
Explosion-proof pressure transmitter Download PDFInfo
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- CN209166707U CN209166707U CN201821819342.6U CN201821819342U CN209166707U CN 209166707 U CN209166707 U CN 209166707U CN 201821819342 U CN201821819342 U CN 201821819342U CN 209166707 U CN209166707 U CN 209166707U
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- sensor core
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Abstract
A kind of explosion-proof pressure transmitter, it include: pedestal, middle shell, side cover, sensor core, pressure ring, circuit board and display screen, sensor core is arranged in base interior, object under test is entered in pedestal by fluid inlet, the pressure of sensor core bulk measurement fluid to be measured, pressure ring and base internal wall are by being threadedly engaged and resisting sensor core, it again include amplifying circuit and display circuit on circuit board, magnification circuit plate and display circuit board is respectively set in corresponding amplifying circuit and display circuit, and magnification circuit plate is arranged near sensor core, display circuit is again far from sensor core, on the one hand the distorted signals of amplifying circuit is avoided, reduce the interference between display circuit and amplifying circuit, on the other hand the explosion-proof performance of pressure transmitter itself is also ensured.
Description
Technical field
The utility model relates to the technical field of industrial instrument, specifically a kind of explosion-proof pressure transmitter.
Background technique
Pressure signal measurement is common measuring technique means in industrial automatic control, and pressure transmitter is a kind of normal
The pressure signal measuring device seen, according to factors such as application, measurement range, required precision, application costs, selected biography
Sensor component type is different.
Explosion-proof pressure transmitter in the prior art is usually applied to explosion-proof occasion, and this requires pressure transmitters itself
Explosion-proof performance with higher, explosion-proof pressure transmitter generally comprise: pedestal, middle shell, side cover, sensor core, pressure ring, circuit
Plate and display screen, wherein fluid inlet is arranged in one end of pedestal, and sensor core is arranged in base interior, and fluid to be measured is entered by fluid
Mouth enters in pedestal, the pressure of sensor core bulk measurement fluid to be measured, and pressure ring is with base internal wall by being threadedly engaged and resisting
Sensor core, includes amplifying circuit and display circuit on circuit board again, and amplifying circuit is electrically connected with sensor core, will sense
The pressure signal that device core measures handles amplification, and display circuit is connected with display screen, and the content controlled on display screen is shown,
Signal is electrically connected and transmitted between amplifying circuit and display circuit, and one end of middle shell is connected with pedestal, and the other end of middle shell is set
It sets and accommodates storehouse, the two sides for accommodating storehouse are separately connected setting side cover, and wherein at least side covers setting display screen, is shown by display screen
The pressure values of fluid.
In explosion-proof pressure transmitter in the prior art, the physical structure of amplifying circuit and display circuit is structure as a whole,
The two shares same circuit board, and amplifying circuit and display circuit all have more mature solution in the prior art, and
Circuit board is generally located in the receiving storehouse of middle shell and fixes with middle shell phase, but amplifying circuit range sensor core is easy farther out
Distorted signals occurs, on the other hand, if integrated circuit plate is all disposed within middle shell can lead close to one end of sensor core again
Cause explosion-proof performance decline.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of explosion-proof pressure transmitters.
The utility model is adopted the technical scheme that solve technical problem present in well-known technique:
The explosion-proof pressure transmitter of the utility model, comprising: pedestal, middle shell, side cover, sensor core, pressure ring, circuit board
And display screen, wherein fluid inlet is arranged in one end of pedestal, and sensor core is arranged in base interior, and fluid to be measured is by fluid inlet
It enters in pedestal, the pressure of sensor core bulk measurement fluid to be measured, pressure ring and base internal wall are by being threadedly engaged and resisting biography
Sensor core includes again amplifying circuit and display circuit on circuit board, and amplifying circuit is electrically connected with sensor core, by sensor
The pressure signal that core measures handles amplification, and display circuit is connected with display screen, and the content controlled on display screen is shown, puts
It is electrically connected and transmits signal between big circuit and display circuit, one end of middle shell is connected with pedestal, the other end setting of middle shell
Accommodate storehouse, the two sides for accommodating storehouse are separately connected setting side cover, and wherein at least side covers setting display screen, corresponding amplifying circuit with
Magnification circuit plate and display circuit board is respectively set in display circuit, and magnification circuit plate and display circuit board are separate structure, the two
Between by connection, magnification circuit plate is arranged in middle shell and is fixedly connected with pressure ring, and display circuit board setting is accommodating
It is fixed in storehouse and with middle shell phase.
The utility model can also use following technical measures:
Damping block is set inside the fluid inlet, and damping block is matched with fluid inlet inner wall, and setting is led on damping block
Chute and deflector hole, the setting direction of diversion trench and the setting direction of fluid inlet are consistent, and the bottom of diversion trench is arranged in deflector hole
Portion, and the shaft core position of diversion trench is deviateed in the setting position of deflector hole.
Baffle is arranged in the base interior, multiple through-holes is arranged on baffle, baffle is located at fluid inlet and sensor core
Between body, and each through-hole deviates projected position of the fluid inlet on baffle.
It is sealed between the sensor core and base internal wall by sealing ring.
The utility model has the advantages and positive effects of:
In the explosion-proof pressure transmitter of the utility model, the circuit board being integrated in the prior art is divided into amplifying circuit
Plate and display circuit board, and magnification circuit plate is fixed on pressure ring and is approached as far as possible with sensor core, and display circuit board is then
Far from sensor core, on the one hand avoids the distorted signals of amplifying circuit, reduces between display circuit and amplifying circuit
Interference, on the other hand also ensures the explosion-proof performance of pressure transmitter itself.In addition, damping block is set inside fluid inlet,
The impact force of high-velocity fluid can be effectively reduced by the damping block that diversion trench and deflector hole are connected with base interior, to protect
The stability for having demonstrate,proved sensor core working environment avoids sensor core that work fluctuation occurs because of fluid impact.In pedestal
The baffle for being inside provided with through-hole then further makes the fluid into pressure transmitter be maintained at stable state, improves measurement
Accuracy.
Detailed description of the invention
Fig. 1 is the external structure schematic diagram of the explosion-proof pressure transmitter of the utility model；
Fig. 2 is the cross-sectional view of the explosion-proof pressure transmitter of the utility model；
Fig. 3 is the axial sectional diagrammatical view illustration of damping block in the explosion-proof pressure transmitter of the utility model；
Fig. 4 is the radial cross section of damping block in the explosion-proof pressure transmitter of the utility model；
Fig. 5 is the schematic diagram of baffle in the explosion-proof pressure transmitter of the utility model.
Specific embodiment
The technical solution of the utility model is described in detail below by way of the drawings and specific embodiments.
As shown in Figures 1 to 5, the explosion-proof pressure transmitter of the utility model, comprising: pedestal 1, middle shell 2, side cover 3, sensing
Device core 4, pressure ring 5, circuit board and display screen, wherein fluid inlet 6 is arranged in one end of pedestal, and sensor core is arranged in base interior
Body, fluid to be measured are entered in pedestal by fluid inlet, the pressure of sensor core bulk measurement fluid to be measured, pressure ring and base internal wall
It again include amplifying circuit and display circuit on circuit board by being threadedly engaged and resisting sensor core, amplifying circuit and sensing
The electrical connection of device core, the pressure signal processing amplification that sensor core is measured, display circuit are connected with display screen, control
Content on display screen is shown, signal, one end and the pedestal phase of middle shell are electrically connected and transmitted between amplifying circuit and display circuit
The other end setting of connection, middle shell accommodates storehouse, and the two sides for accommodating storehouse are separately connected setting side cover, and two side covers will accommodate storehouse in middle shell
It is sealed with external environment, wherein at least side covers setting display screen, and amplification is respectively set in corresponding amplifying circuit and display circuit
Circuit board and display circuit board, magnification circuit plate and display circuit board are separate structure, pass through connection, amplification between the two
Circuit board is arranged in middle shell and is fixedly connected by screw with pressure ring, and display circuit board setting is accommodating in storehouse and passing through screw
It is fixed with middle shell phase.The utility model compared with the existing technology in the circuit diagram of explosion-proof pressure transmitter there is no any
It improves, but carrier, that is, circuit board of circuit in the prior art is split as magnification circuit plate and display by the circuit function of carrying
Then two parts circuit board is separately positioned on different location by circuit board two parts, make magnification circuit plate close to sensor core,
And display circuit board principle sensor core.
Damping block 9 is set inside fluid inlet, and damping block is matched with fluid inlet inner wall, and diversion trench is arranged on damping block
10 and deflector hole 11, the setting direction of diversion trench and the setting direction of fluid inlet are consistent, and the bottom of diversion trench is arranged in deflector hole
Portion, and the shaft core position of diversion trench is deviateed in the setting position of deflector hole.In pressure transmitter in use, liquid or fluid must be into
Enter diversion trench and can just be entered in pedestal after passing through deflector hole, to reduce the impact force of liquid or fluid, makes sensor
The collected pressure signal of core is more steady.Diversion trench is in regular hexagon, water conservancy diversion on the section perpendicular to damping block axle center
The axle center of slot is the axle center of damping block.The intake chute of regular hexagonal section while obtaining biggish logical liquid level product also just
It screws in and fixes in damping block.
Baffle 12 is arranged in base interior, is arranged multiple through-holes 14 on baffle, baffle be located in the liquid inlet with sensor core it
Between, and each through-hole deviates projected position of the inlet on baffle.Through-hole is four through slots for being evenly distributed on baffle periphery.When
Liquid or fluid can be by baffle deflectings, by flowing to sensor core in four through slots, thus into one after passing through delivery hole
Step reduces impact force
It is sealed between sensor core and base internal wall by sealing ring, groove is set outside core, sealing ring setting exists
In groove, to ensure that the leakproofness of sensor, keep measurement data more accurate.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, it is any however, be not intended to limit the utility model although the utility model has been described by way of example and in terms of the preferred embodiments
Those skilled in the art are not departing within the scope of technical solutions of the utility model, certainly can be using in the technology disclosed
Appearance makes a little change or modification, becomes the equivalent embodiment of equivalent variations, but all without departing from technical solutions of the utility model
Content, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention,
It is all within the scope of the technical scheme of the utility model.
Claims (4)
1. a kind of explosion-proof pressure transmitter, comprising: pedestal, middle shell, side cover, sensor core, pressure ring, circuit board and display screen,
Wherein fluid inlet is arranged in one end of pedestal, and sensor core is arranged in base interior, and fluid to be measured enters base by fluid inlet
In seat, the pressure of sensor core bulk measurement fluid to be measured, pressure ring passes through with base internal wall is threadedly engaged and resists sensor core,
It include again amplifying circuit and display circuit on circuit board, amplifying circuit is electrically connected with sensor core, by sensor core bulk measurement
The pressure signal processing amplification arrived, display circuit is connected with display screen, and the content controlled on display screen is shown, amplifying circuit and
Signal is electrically connected and transmitted between display circuit, and one end of middle shell is connected with pedestal, and the other end setting of middle shell accommodates storehouse, holds
The two sides of Na Cang are separately connected setting side cover, and wherein at least side covers setting display screen, it is characterised in that: corresponding amplifying circuit
Magnification circuit plate and display circuit board are respectively set with display circuit, magnification circuit plate and display circuit board are separate structure, two
By connection between person, magnification circuit plate is arranged in middle shell and is fixedly connected with pressure ring, and display circuit board setting is being held
It receives in storehouse and is fixed with middle shell phase.
2. explosion-proof pressure transmitter according to claim 1, it is characterised in that: damping block, resistance are arranged inside fluid inlet
Buddhist nun's block is matched with fluid inlet inner wall, and diversion trench is arranged on damping block and deflector hole, setting direction and the fluid of diversion trench enter
The setting direction of mouth is consistent, and the bottom of diversion trench is arranged in deflector hole, and the axle center of diversion trench is deviateed in the setting position of deflector hole
Position.
3. explosion-proof pressure transmitter according to claim 2, it is characterised in that: baffle is arranged in base interior, sets on baffle
Multiple through-holes are set, baffle is between fluid inlet and sensor core, and each through-hole deviates throwing of the fluid inlet on baffle
Shadow position.
4. explosion-proof pressure transmitter according to claim 3, it is characterised in that: lead between sensor core and base internal wall
Cross sealing ring sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819342.6U CN209166707U (en) | 2018-11-06 | 2018-11-06 | Explosion-proof pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821819342.6U CN209166707U (en) | 2018-11-06 | 2018-11-06 | Explosion-proof pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209166707U true CN209166707U (en) | 2019-07-26 |
Family
ID=67336840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821819342.6U Active CN209166707U (en) | 2018-11-06 | 2018-11-06 | Explosion-proof pressure transmitter |
Country Status (1)
| Country | Link |
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| CN (1) | CN209166707U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082688A (en) * | 2020-08-26 | 2020-12-15 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
-
2018
- 2018-11-06 CN CN201821819342.6U patent/CN209166707U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112082688A (en) * | 2020-08-26 | 2020-12-15 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
| CN112082688B (en) * | 2020-08-26 | 2022-04-26 | 上海域丰传感仪器有限公司 | Strain type pressure sensor's absolute pressure packaging structure |
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