JP3572177B2 - Pressure detector - Google Patents

Pressure detector Download PDF

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Publication number
JP3572177B2
JP3572177B2 JP25512997A JP25512997A JP3572177B2 JP 3572177 B2 JP3572177 B2 JP 3572177B2 JP 25512997 A JP25512997 A JP 25512997A JP 25512997 A JP25512997 A JP 25512997A JP 3572177 B2 JP3572177 B2 JP 3572177B2
Authority
JP
Japan
Prior art keywords
conduit
pressure
pressure sensor
combustion
boss
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.)
Expired - Lifetime
Application number
JP25512997A
Other languages
Japanese (ja)
Other versions
JPH1194672A (en
Inventor
淳 久保田
正樹 小野
直 梅村
Original Assignee
三菱重工業株式会社
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 三菱重工業株式会社 filed Critical 三菱重工業株式会社
Priority to JP25512997A priority Critical patent/JP3572177B2/en
Publication of JPH1194672A publication Critical patent/JPH1194672A/en
Application granted granted Critical
Publication of JP3572177B2 publication Critical patent/JP3572177B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a pressure detection device applied to pressure measurement of a gas turbine combustion device or the like.
[0002]
[Prior art]
FIG. 6 shows a conventional pressure detection device for measuring pressure fluctuation in a gas turbine combustion device. One end of a conduit 4 is attached to the wall of the combustion device 1 via a boss 2. A pressure sensor 3 is attached to the other end. The wall, boss, and conduit are connected by welding, brazing, screws, or the like.
[0003]
Thus, the internal pressure fluctuation generated in the combustion device 1 is transmitted to the pressure sensor 3 via the conduit 4 and measured.
[0004]
[Problems to be solved by the invention]
In the above-described conventional apparatus, a kind of whistling phenomenon or resonance phenomenon in the conduit occurs due to turbulence in the air flow near the entrance of the boss portion or the conduit portion, and a measurement of a value several tens times the true value of the internal pressure also occurs.
[0005]
An object of the present invention is to provide a pressure detecting device capable of faithfully measuring a true value of an internal pressure.
[0006]
[Means for Solving the Problems]
The present invention takes the following measures to solve the above-mentioned problems.
[0007]
(1) In a pressure detecting device having a pressure sensor attached to a measurement object via a conduit, a rectifying plate having a plurality of holes along an axial direction of the conduit is provided at an end of the conduit on a measurement target side , and A gas-permeable multilayer mesh material is provided on the pressure sensor side of the current plate .
[0008]
In the above, the damping action of the plurality of holes of the current plate at the inlet of the conduit and the plurality of holes reduce turbulence in the airflow in each hole, and greatly reduce whistling and resonance. Therefore, a faithful pressure fluctuation is detected by the pressure sensor.
[0009]
In addition to the rectifying plate, the presence of the air-permeable multi-layered mesh material increases the damping action and more effectively reduces whistling and resonance. Therefore, the pressure sensor can more accurately detect the pressure fluctuation of the measurement target.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
(1) An embodiment of the present invention will be described with reference to FIGS. The parts described in the conventional example are assigned the same reference numerals, and the description thereof will be omitted, and the parts related to the present invention will be mainly described.
[0011]
1 and 2, a disc-shaped current plate 6 having a plurality of holes a is embedded and attached to an end of the boss 2 on the combustion device 1 side. In the current plate 6, the opening ratio of the plurality of holes a is about 5 to 20%, and the length (depth) of the holes a is about 4 to 10 mm. The boss 2 is attached by welding or the like, or the boss is directly processed as a boss with a hole.
[0012]
FIG. 3A shows an example of the case where the pressure fluctuation of the combustion device 1 is measured as described above. In the case of the conventional device, the resonance phenomenon b occurs as shown in FIG. 2B, and it can be seen that the resonance phenomenon is effectively suppressed in FIG. Therefore, the pressure fluctuation of the combustion device 1 can be faithfully measured.
[0013]
(2) Another embodiment of the present invention will be described with reference to FIGS. In the above ( 1 ), a metal lath 7 is provided on the pressure sensor 3 side of the current plate 6. The metal lath 7 is a wire mesh of about 400 mesh and has a thickness of about 2.5 to 5 mm.
[0014]
FIG. 5A shows an example of the case where the pressure fluctuation of the combustion device 1 is measured as described above. In the case of the conventional device, the resonance phenomenon b occurs as shown in FIG. 2B, and it can be seen that the resonance phenomenon b is almost completely suppressed in FIG. Therefore, the pressure fluctuation of the combustion device 1 can be measured more faithfully.
[0015]
【The invention's effect】
As described above, the present invention has the following effects.
[0016]
The invention according to claim 1 is a pressure detecting device having a pressure sensor attached to a measurement target via a conduit, wherein a plurality of the pressure detectors are provided along an axial direction of the conduit at an end of the conduit on a measurement target side. And a gas permeable multi-layered mesh material is provided on the pressure sensor side of the current plate . As a result, whistling and resonance phenomena in the conduit portion are effectively suppressed, and a faithful pressure fluctuation can be measured. In addition, the whistling and resonance phenomenon of the conduit portion can be suppressed more effectively. Therefore, more accurate pressure fluctuation can be measured.
[Brief description of the drawings]
FIG. 1 is a sectional view of an embodiment of the present invention.
FIG. 2 is a plan view of the current plate of the embodiment .
FIG. 3 is an operation explanatory view of the embodiment .
FIG. 4 is a sectional view of another embodiment of the present invention.
FIG. 5 is an operation explanatory view of the other embodiment .
FIG. 6 is a sectional view of a conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Combustion device 2 Boss 3 Pressure sensor 4 Conduit 5 Pressure detection device 6 Rectifier plate 7 Metal lath

Claims (1)

  1. In the pressure detection device including a pressure sensor mounted through the conduit onto the target object, the target object end of the conduit, provided with a rectifying plate having a plurality of holes along the axial direction of said conduit, said rectifier plate A pressure detecting device, comprising a multi-layer air-permeable mesh material provided on a pressure sensor side .
JP25512997A 1997-09-19 1997-09-19 Pressure detector Expired - Lifetime JP3572177B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP25512997A JP3572177B2 (en) 1997-09-19 1997-09-19 Pressure detector

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP25512997A JP3572177B2 (en) 1997-09-19 1997-09-19 Pressure detector

Publications (2)

Publication Number Publication Date
JPH1194672A JPH1194672A (en) 1999-04-09
JP3572177B2 true JP3572177B2 (en) 2004-09-29

Family

ID=17274499

Family Applications (1)

Application Number Title Priority Date Filing Date
JP25512997A Expired - Lifetime JP3572177B2 (en) 1997-09-19 1997-09-19 Pressure detector

Country Status (1)

Country Link
JP (1) JP3572177B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8418475B2 (en) * 2007-06-11 2013-04-16 Mitsubishi Heavy Industries, Ltd. Attachment structure of combustion oscillation detecting device

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008089507A (en) * 2006-10-04 2008-04-17 Toyota Motor Corp Sensor mounting structure
JP5712006B2 (en) * 2011-03-11 2015-05-07 三菱重工業株式会社 Pressure measurement structure

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8418475B2 (en) * 2007-06-11 2013-04-16 Mitsubishi Heavy Industries, Ltd. Attachment structure of combustion oscillation detecting device

Also Published As

Publication number Publication date
JPH1194672A (en) 1999-04-09

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