JPH02648U

JPH02648U -

Info

Publication number: JPH02648U
Application number: JP7872388U
Authority: JP
Priority date: 1988-06-14
Filing date: 1988-06-14
Publication date: 1990-01-05

Description

[Brief explanation of drawings]

第１図は本考案に係る第１の実施例の要部の側
断面図、第２図は第２の実施例の要部の側断面図
、第３図は第３の実施例の要部の側断面図、第４
図は第３図におけるＡ―Ａ断面図、第５図は第４
の実施例の要部の側断面図、第６図は第５図にお
けるＢ―Ｂ断面図、第７図は従来例の側断面図で
ある。符号説明、１，２，１Ａ，２Ａ，１Ｂ，２Ｂ，
１Ｃ，２Ｃ：本体、３：保護ダイヤフラム、４，
５：シールダイヤフラム、６，７：導圧管、８：
Ｏリング、９：カバー、１１，２１：凹部、１２
，２２，４２，５２：溝、１３，１４，１５，１
６，２３，２４，２５，２６，４５，５５：孔、
２０：検出部。 Fig. 1 is a side sectional view of the main part of the first embodiment of the present invention, Fig. 2 is a side sectional view of the main part of the second embodiment, and Fig. 3 is the main part of the third embodiment. Side sectional view of 4th
The figure is a sectional view taken along line A-A in Figure 3, and Figure 5 is the 4th cross-sectional view.
FIG. 6 is a sectional view taken along line BB in FIG. 5, and FIG. 7 is a side sectional view of a conventional example. Code explanation, 1, 2, 1A, 2A, 1B, 2B,
1C, 2C: Main body, 3: Protection diaphragm, 4,
5: Seal diaphragm, 6, 7: Impulse tube, 8:
O-ring, 9: cover, 11, 21: recess, 12
, 22, 42, 52: Groove, 13, 14, 15, 1
6, 23, 24, 25, 26, 45, 55: hole,
20: Detection section.

Claims

[Claims for Utility Model Registration] (1) A detection unit that outputs a signal according to the differential pressure to be measured, and a protection unit installed externally to the detection unit to protect the detection unit against introduced pressure. In the detection device, the protection part includes a protection diaphragm that receives the introduction pressure from each side; a seal diaphragm that is disposed on each side of the protection diaphragm and receives the introduction pressure and whose displacement is limited; a first space in contact with each surface of the protective diaphragm; a first pressure hole that directly communicates each of the first spaces with a corresponding space in contact with each of the seal diaphragms; a second pressure-pulling hole that directly communicates the hole with each corresponding pressure-pulling space of the detection section; a space that is in contact with each of the first space, the first pressure-pulling hole, the second pressure-pulling hole, and the seal diaphragm; , and a pressure transmitting fluid filled in a corresponding pressure guiding space of a detection section. (2) In a detection device comprising a detection part that outputs a signal according to the differential pressure to be measured, and a protection part installed externally to this detection part to protect the detection part from introduced pressure, the protection part a protective diaphragm to receive the inlet pressure from each side; a seal diaphragm disposed on each side of the protective diaphragm to receive the inlet pressure and limit displacement; and in contact with each surface of the protective diaphragm. a first space; each of the first spaces and the corresponding space in contact with each of the seal diaphragms are in direct communication, and only a portion adjacent to each of the first spaces has a lower fluid resistance than other portions; 1; a portion of each of the first pressure holes adjacent to each of the first spaces is in direct communication with each of the corresponding pressure spaces of the detection unit, and fluid is supplied from each of the adjacent portions of the first pressure hole; a second pressure impulse hole with a large resistance; pressure filled in each of the first space, the first pressure impulse hole, the second pressure impulse hole, the space in contact with the seal diaphragm, and the corresponding pressure impulse space of the detection section; A differential pressure detection device comprising: a transmission fluid; (3) In a detection device comprising a detection part that outputs a signal according to the differential pressure to be measured, and a protection part installed externally to the detection part to protect the detection part against introduced pressure, the protection part a protective diaphragm to receive the inlet pressure from each side; a seal diaphragm disposed on each side of the protective diaphragm to receive the inlet pressure and limit displacement; and in contact with each surface of the protective diaphragm. a first space; a first pressure guiding hole that directly communicates each of the first spaces with a corresponding space in contact with each of the seal diaphragms; each of the first spaces and each of the corresponding conductors of the detection section a second pressure guiding hole that directly communicates with the pressure space; each of the first spaces;
a groove-like space provided so as to directly communicate the first pressure-reducing hole and the second pressure-reducing hole; each of the first space, the first pressure-reducing hole, the second pressure-reducing hole, the groove-like space, and the seal diaphragm; 1. A differential pressure detection device comprising: a space in contact with a pressure transmitting fluid; and a pressure transmitting fluid filled in a corresponding pressure guiding space of a detection section. (4) In a detection device comprising a detection part that outputs a signal according to the differential pressure to be measured, and a protection part installed externally to this detection part to protect the detection part against introduced pressure, the protection part a protective diaphragm to receive the inlet pressure from each side; a seal diaphragm disposed on each side of the protective diaphragm to receive the inlet pressure and limit displacement; and in contact with each surface of the protective diaphragm. a first space; a groove-shaped second space protruding from the boundary surface of each of the first spaces and extending radially from the center of the boundary surface; a center portion of each of the first spaces; a first pressure impulse hole that directly communicates with the space in contact with each of the seal diaphragms, and whose fluid resistance is lower only in a portion adjacent to the center of each of the first spaces than in other portions; a second pressure-capturing hole that directly communicates a portion adjacent to the center of each of the first spaces with each corresponding pressure-pulling space of the detection unit and having a higher fluid resistance than each of the adjacent portions; Each first space, second space,
A differential pressure detection device comprising: a first pressure guiding hole, a second pressure guiding hole, a space in contact with a seal diaphragm, and a pressure transmitting fluid filled in a corresponding pressure guiding space of a detection section.