CN209416571U - A kind of high overload differential pressure transmitter - Google Patents
A kind of high overload differential pressure transmitter Download PDFInfo
- Publication number
- CN209416571U CN209416571U CN201822219428.1U CN201822219428U CN209416571U CN 209416571 U CN209416571 U CN 209416571U CN 201822219428 U CN201822219428 U CN 201822219428U CN 209416571 U CN209416571 U CN 209416571U
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- Prior art keywords
- differential pressure
- high overload
- membrane
- connecting member
- swivel nut
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Abstract
The problem of the utility model discloses a kind of high overload differential pressure transmitters, belong to transmitter field, and it is smaller to solve existing differential pressure transmitter overload pressure, and differential pressure transmitter is easily caused to damage.The utility model includes housing unit, conversion line board group part and cable, it further include high overload differential voltage protection unit, high overload differential voltage protection unit includes swivel nut, two adjusting screws, convoluted diaphragm, two connecting member for membrane, differential pressure pick-up and the first resilient, elastomeric, two connecting member for membrane are respectively welded at the two sides of convoluted diaphragm, differential pressure pick-up is connected with connecting member for membrane, the centre bore that swivel nut passes through convoluted diaphragm is connect with convoluted diaphragm, swivel nut is not connected to connecting member for membrane, two adjusting screws are threadedly attached in swivel nut both ends respectively, first resilient, elastomeric, which is located at, to be adjusted between screw and connecting member for membrane, cable and differential pressure pick-up are connected with conversion line board group part respectively.The overload protection range of the utility model can achieve hundreds times of range.
Description
Technical field
The utility model belongs to transmitter field, is related to differential pressure transmitter, and specifically one kind exceeds set differential pressure change
Send device.
Background technique
Differential pressure transmitter is widely used for the measurement of liquid, gas flow, reaches measurement stream by measure differences in pressure
The purpose of amount.The existing most overload pressure of differential pressure transmitter does not exceed 10 times of range, applied to high overload pressure
Industry often results in differential pressure transmitter damage, influences equipment normal use, special messenger need to be sent to repair, replace, cause valuableness
Maintenance cost.Currently used differential pressure transmitter is not able to satisfy the demand of some high overload industry differential pressure measurements.
Utility model content
The purpose of the utility model is to provide a kind of high overload differential pressure transmitters, to solve existing differential pressure transmitter overload
The problem of pressure is smaller, and differential pressure transmitter is easily caused to damage.
The technical solution of the utility model is: a kind of high overload differential pressure transmitter, including housing unit, conversion line board group
Part and cable for output signal, further include high overload differential voltage protection unit, high overload differential voltage protection unit include swivel nut,
Two adjusting screws, convoluted diaphragm, two connecting member for membrane, differential pressure pick-up and the first resilient, elastomeric, two connecting member for membrane
It is respectively welded at the two sides of convoluted diaphragm, differential pressure pick-up is connected with connecting member for membrane, during convoluted diaphragm center is equipped with
Heart hole, the centre bore that swivel nut passes through convoluted diaphragm are connect with convoluted diaphragm, and swivel nut is not connected to connecting member for membrane, two adjusting spiral shells
Nail is threadedly attached in swivel nut both ends respectively, and the first resilient, elastomeric, which is located at, to be adjusted between screw and connecting member for membrane, cable
It is connected respectively with conversion line board group part with differential pressure pick-up, housing unit is located at high overload differential voltage protection unit and conversion line
Plate component external.
It is equipped with screw rod in swivel nut middle position as a further improvement of the utility model, screw rod passes through screw thread and swivel nut
Connection.
As a further improvement of the utility model, housing unit include shell, two threaded connectors, connection ring and after
Lid, connection ring are welded on above shell, and rear cover is located above connection ring and is connect by screw thread with connection ring, two threaded connections
Part is located at shell both ends and is connect with shell by screw thread, the position of two threaded connectors respectively with two adjusting screws
Position it is corresponding.Such housing unit structure is convenient for assembling.
It is located by connecting between shell and connecting member for membrane by positioning screw as a further improvement of the utility model,
To prevent connecting member for membrane from rotating in an assembling process.
It is sealed between shell and connecting member for membrane by the second resilient, elastomeric as a further improvement of the utility model,
Second resilient, elastomeric is located above and below swivel nut there are two setting.
Conversion line board group part includes conversion circuit unit and wiring board shield as a further improvement of the utility model,
Set, wiring board sheath are located at outside conversion circuit unit, and silica gel is filled between conversion circuit unit and wiring board sheath, turn
It changes circuit unit and is connected respectively with cable and differential pressure pick-up by conducting wire.
It is equipped with waterproof socket in the root of cable as a further improvement of the utility model, is used for clamping cables line,
It is bonded it.
Differential pressure pick-up and connecting member for membrane are sealed by attachment screw as a further improvement of the utility model, connects
It connects.
Cable is quad line as a further improvement of the utility model,.
The first resilient, elastomeric and the second resilient, elastomeric are all made of rubber production as a further improvement of the utility model,
It forms.
The beneficial effects of the utility model are:
1. differential pressure is more than that threshold value opens mechanical protection, convoluted diaphragm compressive deformation when the pressure of one end is excessive passes through spiral shell
Set pulls that adjust screw mobile, and it is mobile so that the first resilient, elastomeric compressive deformation to adjust screw, thus hinder gas or liquid after
Continuous to pass through, pressure is more than that certain value is just blocked completely into pressure mouth, so that differential pressure pick-up be protected not to be damaged；
2. the overload protection range of the utility model can achieve hundreds times of range；
3. specified differential pressure can adjust screw by turn and be adjusted, easy to adjust, applied widely；
4. the utility model is stable and firm, structure is simple, manufacturing cost is low, be conducive to produce in batches.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of high overload differential pressure transmitter；
Fig. 2 is the structural schematic diagram of high overload differential voltage protection unit in the utility model；
Fig. 3 is a kind of outside drawing of high overload differential pressure transmitter.
In figure, 1- shell；2- threaded connector；3- soldered；4- connection ring；5- rear cover；6- screw rod；7- swivel nut；8- tune
Save screw；9- convoluted diaphragm；10- connecting member for membrane；11- differential pressure pick-up；12- attachment screw；The first resilient, elastomeric of 13-；
14- conversion circuit unit；15- route protection set；16- silica gel；17- positioning screw；The second resilient, elastomeric of 18-；The anti-water cutting of 19-
Seat；20- cable.
Specific embodiment
The utility model is described in detail below in conjunction with attached drawing.
As shown in Figure 1-Figure 3, a kind of high overload differential pressure transmitter, including housing unit, conversion line board group part and cable
Line 20, further includes high overload differential voltage protection unit, and high overload differential voltage protection unit includes 7, two adjustings screws 8, ripple of swivel nut
9, two connecting member for membrane 10 of diaphragm, differential pressure pick-up 11 and the first resilient, elastomeric 13, two connecting member for membrane 10 are respectively welded
On the two sides of convoluted diaphragm 9, differential pressure pick-up 11 is connected with connecting member for membrane 10, and 9 center of convoluted diaphragm is equipped with center
Hole, the centre bore and convoluted diaphragm 9 that swivel nut 7 passes through convoluted diaphragm 9 are by affixed glue connection, and swivel nut 7 and connecting member for membrane 10 are not
Connection, two adjusting screws 8 are threadedly attached in 7 both ends of swivel nut respectively, and the first resilient, elastomeric 13, which is located at, adjusts 8 He of screw
Between connecting member for membrane 10, the cable 20 and differential pressure pick-up 11 are connected with conversion line board group part respectively, housing unit
Positioned at high overload differential voltage protection unit and conversion line plate component external.
It is equipped with screw rod 6 in 7 middle position of swivel nut, screw rod 6 is connect by screw thread with swivel nut 7.
Housing unit includes that 1, two threaded connector 2 of shell, connection ring 4 and rear cover 5, connection ring 4 are welded on shell 1
Side, shell 1 and the sub- arc welding of connection ring 4 form soldered 3, and rear cover 5 is located at 4 top of connection ring and by screw thread and connection ring 4
Connection, two threaded connectors 2 are located at 1 both ends of shell and are connect with shell 1 by screw thread, two threaded connectors 2
Position is corresponding with two adjusting positions of screw 8 respectively.
It is located by connecting between shell 1 and connecting member for membrane 10 by positioning screw 17.
It is sealed between shell 1 and connecting member for membrane 10 by the second resilient, elastomeric 18, the second resilient, elastomeric 18 is equipped with two
It is a, it is located above and below swivel nut 7.
Conversion line board group part includes conversion circuit unit 14 and wiring board sheath 15, and wiring board sheath 15 is located at conversion electricity
Outside road unit 14, silica gel 16 is filled between conversion circuit unit 14 and wiring board sheath 15, conversion circuit unit 14 is logical
Conducting wire is crossed to be connected with cable 20 and differential pressure pick-up 11 respectively.
Waterproof socket 19 is equipped in the root of cable 20.
Differential pressure pick-up 11 is tightly connected with connecting member for membrane 10 by attachment screw 12.
Cable 20 is quad line.
First resilient, elastomeric 13 and the second resilient, elastomeric 18 are all made of rubber and are made.
In use, firstly, differential pressure pressure is defeated by interface corresponding to the threaded connector 2 on shell 1 with pressing means
Enter differential pressure transmitter both ends, with the pressurization of specified differential pressure value, if discontented foot protection requirement, that is, convoluted diaphragm 9 when reaching specified differential pressure
Deformation occurs, then adjustment adjusts screw 8 after release, until meeting more than specified differential pressure is to open the requirement of protection；Its
It is secondary, power supply and signal output line are correctly connected according to specific requirement, it is ensured that connection is correct, voltage is normal；Again, by differential pressure transporting
The basic parameter of device 11 is configured according to condition and requirement, such as: range, zero point, full scale, signal output, the time of integration and
Other parameters；Finally, the output signal that will be transmitted to host computer is analyzed, then make concrete operations.
The overload protection principle of the utility model is as follows: pressure difference passes through interface corresponding to the threaded connector 2 on shell 1
Input, 9 compressive deformation of convoluted diaphragm when the pressure of one end is excessive are pulled by swivel nut 7 and adjust the movement of screw 8, are adjusted screw 8 and are moved
13 compressive deformation of the first resilient, elastomeric so that the end is moved, so that gas or liquid be hindered to continue through, pressure is more than certain value
It is just blocked completely into pressure mouth, so that differential pressure pick-up 11 be protected not to be damaged；When pressure is reduced to rated value or less, ripple
Diaphragm 9 returns back to normal condition, is pulled by swivel nut 7 and adjusts the playback of screw 8, adjusts screw 8 to the pressure of the first resilient, elastomeric 13
Power contact, the rebound of the first resilient, elastomeric 13 open into pressure mouth, restore test function.
In order to extend the service life of swivel nut 7, swivel nut 7 is made using the stronger material of corrosion resistance, rigidity
It is relatively low, so screw rod 6 is arranged, in swivel nut 7 to enhance the support force to swivel nut 7.
The utility model can be widely applied to the fields such as environmental protection, Heating,Ventilating and Air Conditioning, automobile, reliable to the carry out such as differential pressure, flow
Measurement.
Claims (10)
1. a kind of high overload differential pressure transmitter, including housing unit, conversion line board group part and cable, it is characterised in that: also
Including high overload differential voltage protection unit, the high overload differential voltage protection unit includes swivel nut (7), two adjusting screws (8), ripples
Diaphragm (9), two connecting member for membrane (10), differential pressure pick-up (11) and the first resilient, elastomeric (13), two connecting member for membrane
(10) it is respectively welded at the two sides of convoluted diaphragm (9), differential pressure pick-up (11) is connected with connecting member for membrane (10), convoluted diaphragm
(9) center is equipped with centre bore, and the centre bore that swivel nut (7) passes through convoluted diaphragm (9) is connect with convoluted diaphragm (9), swivel nut (7)
It is not connected to connecting member for membrane (10), two adjusting screws (8) are threadedly attached in swivel nut (7) both ends, the first elasticity O respectively
Type circle (13), which is located at, to be adjusted between screw (8) and connecting member for membrane (10), the cable (20) and differential pressure pick-up (11) point
It is not connected with conversion line board group part, the housing unit is located at outside high overload differential voltage protection unit and conversion line board group part
Portion.
2. a kind of high overload differential pressure transmitter according to claim 1, it is characterised in that: in swivel nut (7), interposition is installed
Have screw rod (6), the screw rod (6) is connect by screw thread with swivel nut (7).
3. a kind of high overload differential pressure transmitter according to claim 1 or 2, it is characterised in that: the housing unit includes
Shell (1), two threaded connectors (2), connection ring (4) and rear cover (5), connection ring (4) are welded on above shell (1), rear cover
(5) it is located above connection ring (4) and is connect by screw thread with connection ring (4), two threaded connectors (2) is located at shell
(1) both ends and connect with shell (1) by screw thread, the position of two threaded connectors (2) respectively with two adjustings screw (8)
Position is corresponding.
4. a kind of high overload differential pressure transmitter according to claim 3, it is characterised in that: the shell (1) and diaphragm connect
It is located by connecting between fitting (10) by positioning screw (17).
5. a kind of high overload differential pressure transmitter according to claim 4, it is characterised in that: the shell (1) and diaphragm connect
It is sealed between fitting (10) by the second resilient, elastomeric (18), the second resilient, elastomeric (18) is located at swivel nut there are two setting
(7) above and below.
6. a kind of high overload differential pressure transmitter according to claim 5, it is characterised in that: the conversion line board group part packet
Conversion circuit unit (14) and wiring board sheath (15) are included, the wiring board sheath (15) is located at conversion circuit unit (14) outside
Portion, is filled with silica gel (16) between conversion circuit unit (14) and wiring board sheath (15), and conversion circuit unit (14) passes through
Conducting wire is connected with cable (20) and differential pressure pick-up (11) respectively.
7. a kind of high overload differential pressure transmitter according to claim 6, it is characterised in that: set in the root of cable (20)
There are waterproof socket (19).
8. a kind of high overload differential pressure transmitter according to claim 7, it is characterised in that: the differential pressure pick-up (11) with
Connecting member for membrane (10) is tightly connected by attachment screw (12).
9. a kind of high overload differential pressure transmitter according to claim 8, it is characterised in that: the cable (20) is four cores
Cable.
10. a kind of high overload differential pressure transmitter according to claim 9, it is characterised in that: first resilient, elastomeric
(13) it is all made of rubber with the second resilient, elastomeric (18) and is made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822219428.1U CN209416571U (en) | 2018-12-27 | 2018-12-27 | A kind of high overload differential pressure transmitter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822219428.1U CN209416571U (en) | 2018-12-27 | 2018-12-27 | A kind of high overload differential pressure transmitter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209416571U true CN209416571U (en) | 2019-09-20 |
Family
ID=67940961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822219428.1U Active CN209416571U (en) | 2018-12-27 | 2018-12-27 | A kind of high overload differential pressure transmitter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209416571U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855700A (en) * | 2019-01-31 | 2019-06-07 | 麦克传感器股份有限公司西安分公司 | A kind of throw-in type liquid transmitter |
-
2018
- 2018-12-27 CN CN201822219428.1U patent/CN209416571U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109855700A (en) * | 2019-01-31 | 2019-06-07 | 麦克传感器股份有限公司西安分公司 | A kind of throw-in type liquid transmitter |
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