CN108225658A - A kind of gas turbine differential pressure pickup - Google Patents
A kind of gas turbine differential pressure pickup Download PDFInfo
- Publication number
- CN108225658A CN108225658A CN201711298959.8A CN201711298959A CN108225658A CN 108225658 A CN108225658 A CN 108225658A CN 201711298959 A CN201711298959 A CN 201711298959A CN 108225658 A CN108225658 A CN 108225658A
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- CN
- China
- Prior art keywords
- partition
- plunger
- convoluted diaphragm
- housing
- gas turbine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L13/00—Devices or apparatus for measuring differences of two or more fluid pressure values
- G01L13/02—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements
- G01L13/025—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms
- G01L13/026—Devices or apparatus for measuring differences of two or more fluid pressure values using elastically-deformable members or pistons as sensing elements using diaphragms involving double diaphragm
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
A kind of gas turbine differential pressure pickup, including housing, microswitch, contact, upper convoluted diaphragm, lower convoluted diaphragm, plunger, first interface stud, plug and second interface stud；Case inside bottom is provided with first partition, the centrally disposed hole of first partition perpendicular to housing sidewall, and first partition lower section is provided with lower convoluted diaphragm；First partition centre bore is provided with plunger above lower convoluted diaphragm, plunger top is connected with convoluted diaphragm, and upper convoluted diaphragm upper vertical is provided with second partition in housing sidewall；Second partition is provided with the hole symmetrical with first partition center hole, and contact is provided in hole, and the bottom of contact is connect with upper ripple diaphragm upper surface；Microswitch, microswitch connection plug are provided on case inside wall at the top of contact；First interface stud and second interface stud are arranged on the bottom of housing.
Description
Technical field
Sensing and testing field the present invention relates to gas engine pressure difference, more particularly to a kind of gas turbine pressure difference sensing
Device.
Background technology
Pressure difference senses and test is one of monitoring main means of gas turbine performance, and the pressure parameter of gas turbine changes
Need the sense of participation of pressure difference signal device that should and test.Data shows gas turbine in outfield in use, after before oily filter with oily filter
Pressure drop be more than certain value when, sensor actuation to automatic control system send out oily filter pollution signal.Pressure difference Parameters variation
The factor of influence is more, and the situation of pressure difference signal device false alarm is caused to occur often.
Invention content
The purpose of the present invention is to provide a kind of gas turbine differential pressure pickup, to solve the above problems.
To achieve the above object, the present invention uses following technical scheme：
A kind of gas turbine differential pressure pickup, including housing, microswitch, contact, upper convoluted diaphragm, lower ripple film
Piece, plunger, first interface stud, plug and second interface stud；Case inside bottom is provided with first perpendicular to housing sidewall
Partition board, the centrally disposed hole of first partition, first partition lower section are provided with lower convoluted diaphragm；The is passed through above lower convoluted diaphragm
One partition board centre bore is provided with plunger, and plunger top is connected with convoluted diaphragm, and upper convoluted diaphragm upper vertical is in housing sidewall
It is provided with second partition；Second partition is provided with the hole symmetrical with first partition center hole, and contact is provided in hole,
The bottom of contact is connect with upper ripple diaphragm upper surface；Microswitch is provided on case inside wall at the top of contact, fine motion is opened
Correlate plug；First interface stud and second interface stud are arranged on the bottom of housing.
Further, lower that high pressure chest is formed between convoluted diaphragm and housing bottom, high pressure chest is connected with second interface stud.
Further, plunger fixed plate is provided between first partition and second partition, plunger fixed plate is set in plunger
On, plunger can move axially in plunger fixed plate；Form low pressure chamber between plunger fixed plate and first partition, low pressure chamber with
First interface Stud connection.
Further, reference cavity, reference cavity and atmosphere are formed between upper convoluted diaphragm and plunger fixed plate；Plunger
Spring is provided between bottom and lower convoluted diaphragm.
Further, there are gaps between first partition and case inside wall；Pass through electronics between first partition and plunger
Beam welds.
Further, upper convoluted diaphragm and lower convoluted diaphragm are made of constant modulus alloy.
Compared with prior art, the present invention has following technique effect：
The present invention is by setting high pressure chest and low pressure chamber, upper and lower convoluted diaphragm, plunger；When high pressure chest is full of hydraulic oil at present
Convoluted diaphragm drives plunger to move up,, will so as to the connecting and disconnecting of controller plug so as to which contact be driven to trigger microswitch
The pressure change of cavity is reacted directly on microswitch, so as to avoid the generation of false alarm.Gas in 9 oil of low pressure chamber simultaneously
It is discharged in reference pressure chamber 10, and the pressure in 9 body of low pressure chamber is kept not change.
Description of the drawings
Fig. 1 is schematic structural view of the invention；
Wherein：1. microswitch；2. contact；Convoluted diaphragm on 3.；4. plunger；5. lower convoluted diaphragm；6. first interface spiral shell
Column；7. second interface stud；8. high pressure chest；9. low pressure chamber；10. reference cavity；11. plug；13. spring；14th, housing.
Specific embodiment
Below in conjunction with attached drawing, the present invention is further described：
Referring to Fig. 1, a kind of gas turbine differential pressure pickup, including housing 14, microswitch 1, contact 2, upper ripple
Diaphragm 3, lower convoluted diaphragm 5, plunger 4, first interface stud 6, plug 11 and second interface stud 7；14 inside bottom of housing is hung down
14 side wall of housing is directly provided with first partition, the centrally disposed hole of first partition, first partition lower section is provided with lower ripple
Diaphragm 5；Lower 5 top of convoluted diaphragm is provided with plunger 4 across first partition centre bore, and 4 top of plunger is connected with convoluted diaphragm
3, upper 3 upper vertical of convoluted diaphragm is provided with second partition in 14 side wall of housing；Second partition is provided with and first partition center
Hole symmetrical hole is provided with contact 2 in hole, and the bottom of contact 2 is connect with upper 3 upper surface of convoluted diaphragm；Contact 2 pushes up
Microswitch 1,1 connection plug 11 of microswitch are provided on 14 madial wall of housing in portion；First interface stud 6 and second interface
Stud 7 is arranged on the bottom of housing 14.
High pressure chest 8 is formed between 14 bottom of lower convoluted diaphragm 5 and housing, high pressure chest 8 is connected with second interface stud 7.
Plunger fixed plate is provided between first partition and second partition, plunger fixed plate is set on plunger 4, plunger 4
It can be moved axially in plunger fixed plate；Low pressure chamber 9, low pressure chamber 9 and first are formed between plunger fixed plate and first partition
Interface stud 6 connects.
Reference cavity 10, reference cavity 10 and atmosphere are formed between upper convoluted diaphragm 3 and plunger fixed plate；The bottom of plunger 4
Spring 13 is provided between portion and lower convoluted diaphragm 5.
There are gaps between 14 madial wall of first partition and housing；Pass through electron beam welding between first partition and plunger.
Upper convoluted diaphragm 3 and lower convoluted diaphragm 5 are made of constant modulus alloy.
Operation principle：
1) first interface stud 6 and second interface stud 7 are distinguished into connected pipes；
2) when having pressure differential to reach setting value in two groups of oil pipes, the oil in high pressure chest 8 transports lower convoluted diaphragm 5 upwards
It is dynamic, while plunger 4 is driven to move upwards, plunger 4 drives upper convoluted diaphragm 3 to move upwards band moving contact 2 and moves upwards, and triggering is micro-
Dynamic switch 1 makes plug power alarm；
3) when there is pressure differential to be less than setting value in two groups of oil pipes, contact is fallen after rise, and microswitch 1 disconnects.
Claims (6)
1. a kind of gas turbine differential pressure pickup, which is characterized in that including housing (14), microswitch (1), contact (2), on
Convoluted diaphragm (3), lower convoluted diaphragm (5), plunger (4), first interface stud (6), plug (11) and second interface stud (7)；
Housing (14) inside bottom is provided with first partition perpendicular to housing (14) side wall, the centrally disposed hole of first partition, and first
Lower convoluted diaphragm (5) is provided with below partition board；First partition centre bore is provided with plunger (4) above lower convoluted diaphragm (5),
Plunger (4) top is connected with convoluted diaphragm (3), and upper convoluted diaphragm (3) upper vertical is provided with second in housing (14) side wall
Partition board；Second partition is provided with the hole symmetrical with first partition center hole, and contact (2), contact (2) are provided in hole
Bottom connect with upper convoluted diaphragm (3) upper surface；Microswitch is provided on housing (14) madial wall at the top of contact (2)
(1), microswitch (1) connection plug (11)；First interface stud (6) and second interface stud (7) are arranged on housing (14)
Bottom.
2. a kind of gas turbine differential pressure pickup according to claim 1, which is characterized in that lower convoluted diaphragm (5) with
High pressure chest (8) is formed between housing (14) bottom, high pressure chest (8) is connected with second interface stud (7).
3. a kind of gas turbine differential pressure pickup according to claim 1, which is characterized in that first partition and second every
Plunger fixed plate is provided between plate, plunger fixed plate is set on plunger (4), and plunger (4) can be in plunger fixed plate inner shaft
To movement；Low pressure chamber (9) is formed between plunger fixed plate and first partition, low pressure chamber (9) is connect with first interface stud (6).
4. a kind of gas turbine differential pressure pickup according to claim 1, which is characterized in that upper convoluted diaphragm (3) with
Reference cavity (10), reference cavity (10) and atmosphere are formed between plunger fixed plate；The bottom of plunger (4) and lower convoluted diaphragm
(5) spring (13) is provided between.
5. a kind of gas turbine differential pressure pickup according to claim 1, which is characterized in that first partition and housing
(14) there are gaps between madial wall；Pass through electron beam welding between first partition and plunger.
6. a kind of gas turbine differential pressure pickup according to claim 1, which is characterized in that upper convoluted diaphragm (3) and
Lower convoluted diaphragm (5) is made of constant modulus alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298959.8A CN108225658A (en) | 2017-12-08 | 2017-12-08 | A kind of gas turbine differential pressure pickup |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298959.8A CN108225658A (en) | 2017-12-08 | 2017-12-08 | A kind of gas turbine differential pressure pickup |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108225658A true CN108225658A (en) | 2018-06-29 |
Family
ID=62653417
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711298959.8A Pending CN108225658A (en) | 2017-12-08 | 2017-12-08 | A kind of gas turbine differential pressure pickup |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108225658A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345323Y (en) * | 2009-02-13 | 2009-11-11 | 北京光华创世科技有限责任公司 | Micro differential pressure switch |
| CN203024924U (en) * | 2013-01-25 | 2013-06-26 | 中国电子科技集团公司第四十九研究所 | Pressure difference signal sensor with dynamic sealing structure |
-
2017
- 2017-12-08 CN CN201711298959.8A patent/CN108225658A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201345323Y (en) * | 2009-02-13 | 2009-11-11 | 北京光华创世科技有限责任公司 | Micro differential pressure switch |
| CN203024924U (en) * | 2013-01-25 | 2013-06-26 | 中国电子科技集团公司第四十九研究所 | Pressure difference signal sensor with dynamic sealing structure |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180629 |