WO2007026602A1 - 圧力計および圧力計組立体 - Google Patents
圧力計および圧力計組立体 Download PDFInfo
- Publication number
- WO2007026602A1 WO2007026602A1 PCT/JP2006/316668 JP2006316668W WO2007026602A1 WO 2007026602 A1 WO2007026602 A1 WO 2007026602A1 JP 2006316668 W JP2006316668 W JP 2006316668W WO 2007026602 A1 WO2007026602 A1 WO 2007026602A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- orifice
- pressure gauge
- joint
- detection passage
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/06—Means for preventing overload or deleterious influence of the measured medium on the measuring device or vice versa
- G01L19/0609—Pressure pulsation damping arrangements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
Definitions
- the present invention comprises a pressure gauge provided in the middle of a pipe for measuring the pressure of a fluid flowing in the pipe, and a joint connected to such a pressure gauge and the pressure gauge.
- a pressure gauge provided in the middle of a pipe for measuring the pressure of a fluid flowing in the pipe, and a joint connected to such a pressure gauge and the pressure gauge.
- pressure gauge assembly Rice field
- FIG. 7a is a view showing a pressure gauge according to the prior art as disclosed in Japanese Patent Laid-Open No. 2 0 0 2-3 1 0 8 2 3.
- a pressure gauge 10 2 is provided in the middle of the pipe 10 1.
- the pressure gauge 10 0 2 is mounted by screwing into the mounting hole 1 0 5 of the joint 1 0 4 to which the pipe 1 0 1 is connected.
- the pipe 1 0 4 is formed on the joint 1 0 4. 1 detects the pressure of the fluid flowing in the flow path 10 6 connected to 1, and displays the pressure of the fluid on the display unit 10 8 having the display needle 10 7.
- FIG. 7 b is a partially enlarged view of the pressure gauge shown in FIG. 7 a.
- the pressure gauge 1 0 2 is fixed to the mounting part 1 1 1 and the mounting part 1 1 1 formed with male threads to be screwed into the mounting holes 1 0 5 of the joint 1 0 4 And measuring unit 1 1 2.
- a pressure detection passage 1 1 1 a is formed in the mounting portion 1 1 1, and the pressure of the fluid from the pressure detection passage 1 1 1 a acts on the flam 1 1 3.
- the flam 1 13 is formed in a bottomed cylindrical shape, and its peripheral surface is an accordion-shaped bellows portion 1 1 4 formed in a bellows shape.
- the operating rod 1 1 5 of the measuring unit 1 1 2 is inserted into the frame 1 1 3 from above.
- an extendable frame 1 1 3 is provided so that the fluid does not directly touch the operating rod 1.15 of the measuring unit 1 1 2.
- the pressure of the fluid is transmitted to the operating rod 1 1 5 via the.
- a protective cap 1 1 9 is provided to cover the periphery of the end of the operating rod 1 1 5. ing.
- the protective cap 1 1 9 is made of a corrosion-resistant material and prevents the internal mechanism of the pressure gauge 10 0 2 from being corroded by the chemical solution when measuring the pressure in the conduit 10 0 1 through which the chemical solution flows.
- the pressure of the fluid flowing in the pipe line 10 1 is transmitted from the pressure detection passage 1 1 1 1 a of the mounting portion 1 1 1 to the fram 1 1 3, so that the flam 1 1 3
- the operating rod 1 1 5 inserted in the flam, 1 1. 3 is lifted by the pressure, and the operating rod 1 1 5 moves along with the movement of the operating rod 1 1 5.
- the indicator hand 1 0 7 is rotated so that the pressure is indicated.
- the pressure gauge disclosed in Japanese Patent Laid-Open No. 2 0 2-3 1 0 8 2 3 avoids the influence of chemicals by using a material having excellent chemical resistance as described above.
- the impact of water hammer cannot be prevented, and damage to the pressure gauge is a concern as well.
- the present invention has been made in view of such circumstances, and a pressure gauge capable of suppressing breakage of an internal mechanism based on a pressure fluctuation phenomenon in a pipe line such as a water hammer effect, and such a pressure gauge.
- An object of the present invention is to provide a three-dimensional pressure gauge assembly. Disclosure of the invention
- a pressure measurement display unit that measures pressure and displays it with a display hand, and an attachment in which a pressure detection passage is formed extending from the pressure measurement display unit.
- a pressure gauge comprising a portion and an orifice member disposed in the pressure detection passage and having an orifice formed therein.
- the pressure of the pipe connected to the pressure gauge is transmitted to the pressure measurement display unit through the orifice.
- the impact based on the pressure fluctuation phenomenon in the pipe line such as a water hammer effect is weakened, and damage to the internal mechanism of the pressure gauge can be suppressed.
- an orifice member requiring relatively high accuracy can be separately prepared and then assembled to the pressure gauge.
- by attaching an orifice member to an existing pressure gauge it is possible to easily protect the existing pressure gauge from pressure fluctuation phenomena.
- the pressure measurement display unit that measures the pressure and displays the pressure using a display needle, and the mounting portion that extends from the pressure measurement display unit and has a pressure detection passage formed therein, the pressure is provided.
- a pressure gauge is provided in which an orifice is formed in the “detection passage”.
- the pressure of the pipe connected to the pressure gauge is transmitted to the pressure measurement display unit through the orifice.
- the impact based on the pressure fluctuation phenomenon in the pipe line such as water hammer effect is weakened and the internal mechanism of the pressure gauge can be prevented from being damaged.
- the orifice can be easily formed.
- the length of the orifice parallel to the pressure detection passage is about 10 to 30 times the inner diameter of the orifice.
- the responsiveness of the pressure gauge can be maintained while weakening the impact due to pressure fluctuation.
- the orifice is disposed adjacent to the pressure measurement display portion in the pressure detection passage.
- a pressure gauge including a mounting portion in which a pressure detection passage is formed, a joint connecting the mounting portion of the pressure gauge and a pipe line, and an internal passage of the joint And an orifice member having an orifice formed therein.
- the pressure in the pipeline is transmitted to the pressure gauge through the joint orifice. For this reason, the impact based on the pressure fluctuation phenomenon in the pipe line such as a water hammer effect is weakened, and the internal mechanism of the pressure gauge can be prevented from being damaged. Furthermore, in the fifth aspect
- Orifice members that require relatively high accuracy are prepared separately and then assembled to the joint.
- a pressure gauge including an attachment portion in which a pressure detection passage is formed; and a joint that connects the attachment portion of the pressure gauge and a pipe line.
- a pressure gauge assembly is provided in which an orifice is formed in a portion of the interior and passage of the joint.
- the pressure in the pipeline is transmitted to the pressure measurement display unit through the joint and the U-face. For this reason, impacts due to pressure fluctuation phenomena in pipes such as water hammering can be reduced, and damage to the internal structure of the pressure gauge can be suppressed. It is possible to easily form the process.
- the length of the orifice parallel to the internal passage of the joint is about 10 to 30 times the inside diameter of the orifice. .
- the seventh embodiment when an orifice having such a size is used, it is possible to maintain the responsiveness of the pressure gauge while reducing the impact due to pressure fluctuation.
- the orifice is disposed adjacent to the mounting portion of the pressure gauge in an internal passage of the joint.
- FIG. 1 a is a front view of a pressure gauge according to the first embodiment of the present invention. '
- FIG. 1 b is a side view of the pressure gauge according to the first embodiment of the present invention.
- FIG. 2 is a sectional side view of the orifice member.
- FIG. 3 a is a first view for explaining the insertion of the orifice member into the attachment portion of the pressure gauge.
- FIG. 3 b is a second view for explaining the insertion of the orifice member into the mounting portion of the pressure gauge.
- FIG. 3c is a third view for explaining the insertion of the orifice member into the attachment portion of the pressure gauge.
- FIG. 4a is a front view of one example using the pressure gauge of the present invention.
- FIG. 4b is a side view of one example using the pressure gauge of the present invention.
- FIG. 5a is a front view of a pressure force meter according to the second embodiment of the present invention.
- FIG. 5 b is a front view of another pressure gauge according to the second embodiment of the present invention.
- FIG. 6 a is a front view of a pressure gauge assembly according to the present invention.
- FIG. 6b is a front view of another pressure gauge assembly according to the present invention.
- Figure 7a shows a prior art pressure gauge. .
- FIG. 7 b is a partially enlarged view of the pressure gauge shown in FIG. 7 a.
- FIG. 1a and FIG. 1b are a front view and a side view of a pressure gauge according to the first embodiment of the present invention, respectively.
- the pressure gauge 10 includes a pressure measurement display unit 1 1 for measuring pressure and displaying it, and a mounting unit 2 1 extending from the pressure measurement display unit 1 1 and having a pressure detection passage 2 2 formed therein. It is out.
- the mounting portion 2 ⁇ formed of a fluorine-based material is directly connected to a conduit (not shown) through which a fluid flows, or is connected to a joint 30 described later.
- a protective cap 29, which is attached at the time of product shipment, is disposed at the tip of the mounting portion 21.
- the pressure measurement display unit 1 1 includes an internal mechanism unit 13 (not shown) disposed in the lower part of the housing 12. Since this internal mechanism part 13 is a well-known 'form, description is abbreviate
- the pressure gauge 10 is attached to a pipe line (not shown)
- the pressure of the fluid in the pipe line is transmitted to the internal mechanism part 13 through the pressure detection passage 2 2 of the attachment part 21.
- the internal mechanism part 13 measures the pressure value, and then the display needle 14 of the display part 15 provided on the front surface of the pressure measurement display part 11 turns according to the pressure value. ing.
- FIG. 1 b in the pressure gauge 10 of the present invention, an orifice member 60 is inserted into the pressure detection passage 22.
- FIG. 2 is a side sectional view of the orifice member 60.
- the orifice member 60 is a substantially cylindrical member having an outer diameter slightly smaller than the inner diameter of the pressure detection passage 2 2.
- the orifice member 60 is formed with an orifice 62 as a through hole extending in the longitudinal direction.
- the inner diameter of the orifice 62 is considerably smaller than the outer diameter of the orifice member 60.
- the length of the orifice 62 can be in the range of about 10 to 30 times the inner diameter of the orifice 62. .
- the orifice member 60 is preferably made of a fluorine-based material. When measuring the pressure of a highly corrosive chemical solution, the orifice member 60 is prevented from being corroded by the chemical solution. Also, as described later, More preferably, the fiss member 60 is made of a fluorine-based material having higher strength than the fluorine-based material forming the attachment portion '2 1.
- Tapered portions 6 3 and 6 4 are formed on the front side and the rear side of the orifice 62 so that the diameter increases outward. These tapered portions 6 3, 6 4 assist fluid in and out of the orifice 62. Further, an annular protrusion 67 is provided on the peripheral surface of the orifice member 60. The outer diameter of the annular protrusion 6 7 is approximately equal to or slightly larger than the inner diameter of the pressure detection passage 22. Further, the annular projecting portion 67 is formed in front of the center of the orifice member 60, that is, on the tapered portion 63 side. Further, as shown in the figure, chamfered portions 65 and 66 for facilitating insertion of the orifice member 60 are formed on the front surface and the rear surface of the orifice member 60, respectively.
- FIG. 3a to 3c are diagrams for explaining the insertion of the orifice member into the mounting portion of the pressure gauge.
- the first jig 50 and the second jig 55 are used for inserting the orifice member 60 into the pressure detection passage 22 of the mounting rod 21.
- the first jig 50 includes a handle 51 and a rod 52 extending from the handle 51, and the outer diameter of the mouth 52 is a pressure detection passage 22. Slightly smaller than the inner diameter of
- recesses 56 and 57 are formed coaxially with each other on both end faces of the second jig 55 that is a substantially cylindrical member.
- the inner diameters of these recesses 5 6 and 5 7 are approximately equal to the inner diameter of the pressure detection passage 22.
- a stopper 58 is provided between the recesses 5 6 and 5 7. ⁇
- the operator holds the handle 5 1 of the first jig 50 and pushes the rod 5 2 into the recess 5 6 of the second jig 5 5 until it presses against the stopper 5 8. insert.
- the orientation of the second jig 5 5 in the recess 5 7 Insert the chair member 6 0 from the rear side.
- the concave portion 57 is formed deep enough to receive from the annular projecting portion 67 of the orifice member 60 to the rear end surface. Since the annular protrusion 6 7 is provided in front of the center of the orifice member 60, the orifice member 60 is supported when the orifice member 60 is supported by the second jig 55. Does not fall off easily.
- the needle 5 1 is pushed, whereby the orifice member 60 is inserted into the pressure detection passage 22.
- the first jig 50 and the second jig 55 are pulled out to separate the first jig 50 and the second jig 55.
- the rod 52 of the first jig 50 is pushed into the pressure detection passage 22 and the orifice member 60 is inserted to a desired position in the pressure detection passage 22.
- the orifice member 60 is preferably disposed immediately below the pressure measurement display unit 11, in other words, the orifice member 60 is disposed adjacent to the pressure measurement display unit.
- a pressure gauge 10 it is avoided that the chemical solution that has passed through the orifice 62 of the orifice member 60 due to a water hammer or the like accumulates between the pressure measurement display unit 11 and the orifice member 60. Is done.
- the orifice member 60 When the orifice member 60 is inserted to a desired position in the pressure detection passage 22, the pressure is detected from the orifice member 60 by applying heat and pressure from the outside of the mounting portion 21 after the rod 52 is pulled out. Heat seal in passage 2 2. As a result, the pressure detection passage 22 contracts radially inward, and the orifice member 60 is fixed in the pressure detection passage 22 in a sealed state. For this reason, there is no gap between the orifice member 60 and the inner surface of the pressure detection passage 22, and the pressure from the pipe (not shown) passes through only the orifice 62 of the orifice member 60 and the internal mechanism 1. Transmitted to 3. Naturally, the orifice member 60 may be attached to the pressure detection passage 22 by a method different from the method using the jigs 50, 55.
- the orifice member 60 preferably has sufficient strength and heat resistance so as not to be deformed at the time of heat sealing, and particularly preferably has higher strength and heat resistance than the material of the mounting portion 21. As a result, the size of the orifice 62 of the orifice member 60 is prevented from changing during heat fusion.
- a preferred material of such an orifice member 60 is, for example, PCTFE (polychloroethylene trifluoroethylene), and a preferred material of the attachment portion 21 is, for example, PFA (perfluoroalkoxyethylene).
- FIGS. 4a and 4b are a front view and a side view, respectively, in one example using a pressure gauge 10 according to the present invention.
- the mounting portion 2 1 of the pressure gauge 10 is connected to one joint portion 3 1 of the T-shaped joint 30 and is fixed by a screw cap 3 1 a. Therefore, in this case, the pressure of the fluid flowing between the other joints 3 2 and 3 3 aligned in a straight line is measured by the pressure gauge 10.
- the pressure gauge 10 may be directly attached to the pipe (not shown) without using the T-shaped joint 30.
- the length of the orifice 6 2 ranges from about 10 to 30 times the inside diameter of the orifice 6 2 In this case, the decrease in responsiveness hardly becomes a problem. That is, when the dimension 62 of the orifice 62 is set within the above-described range, the responsiveness of the pressure gauge 10 can be maintained while weakening the impact based on the pressure fluctuation phenomenon.
- such an orifice member 60 is separate from the pressure gauge 10 in order to produce an orifice member 60 in which the orifice 62 is formed. Created. For this reason, in this embodiment, the yield of the attachment portion 21 does not decrease.
- the orifice member 60 may be retrofitted into the pressure detection passage of an existing pressure gauge. That is, by assembling the orifice member 60 according to the present invention to an existing pressure gauge, the existing pressure gauge can be easily protected from a pressure fluctuation phenomenon such as water hammer.
- FIG. 5 a is a front view of a pressure gauge according to the second embodiment of the present invention.
- the pressure gauge 10 is connected to the T-shaped joint 30, and the joint tip 3 1 c of the joint 3 1 is engaged with the tip of the mounting portion 21. Further, a threaded cap 31a is screwing the mounting portion 21 to the joint tip 31c.
- the inner surface of the pressure detection passage 2 2 of the mounting portion 21 is partially curved inward, whereby an orifice 69 is formed.
- the orifice 6 9 has substantially the same dimensions as the orifice 6 2 of the orifice member 60 described above.
- the orifice 69 is preferably formed at the same time as the mounting portion 21 is molded, so that the orifice 69 is easily formed. Can. Even in such a case, the pressure in the pipe (not shown) is transmitted to the internal mechanism 13 (not shown) through the T-shaped joint 30 and the orifice 69, so that it is almost the same as described above. An effect is obtained. '.,
- the orifice 69 is formed by the inner surface of the pressure detection passage 22, the step of inserting the orifice member 60 into the pressure detection passage 22 and heat-sealing them. As a result, manufacturing time can be shortened.
- the orifice member 60 is a pressure detection passage.
- FIG. 5b is a front view of another pressure gauge based on the second embodiment of the present invention.
- An orifice 69 is formed in the pressure detection passage 22 of the pressure gauge 10 in the same manner as in FIG.
- This pressure gauge 10 is a T-shaped joint
- the insertion piece 4 lb in which the through-passage is formed is inserted and held in the inlet of the pressure detection passage 22, and then the pressure detection passage 22 having the insertion piece 4 1 b is connected to the joint tip 4 1. inserted into c.
- the inner flow path of the joint tip 4 1 c and the penetration path of the insertion piece 4 1 b ′ are coaxial and their inner diameters are substantially equal to each other.
- the threaded cap 4 1 a screws the mounting portion 2 1 into the joint tip 4 1 c.
- FIG. 6a is a front view of a pressure gauge assembly according to the present invention.
- the pressure gauge assembly 1 shown in FIG. 6 a mainly includes a pressure gauge 10 including a mounting part 2 1 and a T-shaped joint 30 connected to the mounting part 2 1 of the pressure gauge 10.
- 6A differs from the above-described pressure gauge in that orifices 6 2 and 6 9 are not formed in the pressure detection passage 2 2 of the pressure gauge 10 shown in FIG. 6a.
- the T-joint 30 is assumed to have substantially the same configuration as the T-joint 30 shown in FIG. 5a.
- an orifice 49 is formed at the joint tip 3 1 c in the joint 3 1 of the T-shaped joint 30.
- the orifice 49 has an inner diameter substantially the same as that of the orifice 62 and the like described above, and is formed over the entire joint 31. Since the orifice 49 can be formed at the same time as the T-shaped joint 30 is manufactured, the orifice 49 can be easily formed. Further, as shown in the figure, when the pressure gauge 10 is connected to the T-shaped joint 30, the orifice 4 9 is positioned relatively close to the pressure measurement display section 11. It will be.
- FIG. 6b is a front view of another pressure gauge assembly according to the present invention.
- the pressure gauge assembly 1 shown in FIG. 6 b mainly includes a pressure gauge 1 0 including a mounting part 2 1 and a T-joint 4 0 connected to the mounting part 2 1 of the pressure gauge 1 0.
- the T-joint 40 is assumed to have almost the same configuration as the T-joint 40 shown in Fig. 5b.
- the connection of the T-joint 40 is An orifice 4 9 is formed in the fitting piece 4 1 b at the joint 4 1.
- This orifice 49 can be formed simultaneously with the manufacture of the insert piece 41b.
- the orifice 4.9 is positioned relatively close to the pressure measurement display section 11. . It will be clear that the pressure gauge assembly 1 shown in Fig. 6b can achieve the same effect as described above.
- a pressure gauge assembly as shown in FIGS. 4 a and 4 b including a pressure gauge 10 and a T-joint 30 connected to the pressure gauge 10 is within the scope of the present invention. Do it.
- the pressure gauge assembly accompanying the orifice member 60 having a shape corresponding to the joint tip 3 1 c inserted and fixed to the joint tip 3 1 of the joint 3 1 is also included in the present invention. Included in the range. In this case, it will be apparent to those skilled in the art that the pressure gauge can be similarly protected from the pressure fluctuation phenomenon by inserting the office member 60 into the existing joint connected to the pressure gauge. . .
- the present invention is not limited to the type of pressure gauge, and any type of pressure gauge, for example, a bellows type pressure gauge, is within the scope of the present invention as long as it has the above-described orifice configuration. Shall be included. -Although the present invention has been described using exemplary embodiments, those skilled in the art may make the above-described modifications and various other modifications, omissions, and additions without departing from the scope of the present invention. You can understand what you can do.
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Abstract
Description
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112006002271.7T DE112006002271B4 (de) | 2005-08-31 | 2006-08-18 | Druckmesser und Druckmesseraufbau |
KR1020087003936A KR101274635B1 (ko) | 2005-08-31 | 2006-08-18 | 압력계 및 압력계 조립체 |
US12/065,102 US8037769B2 (en) | 2005-08-31 | 2006-08-18 | Pressure gauge and pressure gauge assembly |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005251561A JP4911933B2 (ja) | 2005-08-31 | 2005-08-31 | 圧力計および圧力計組立体 |
JP2005-251561 | 2005-08-31 |
Publications (1)
Publication Number | Publication Date |
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WO2007026602A1 true WO2007026602A1 (ja) | 2007-03-08 |
Family
ID=37808696
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2006/316668 WO2007026602A1 (ja) | 2005-08-31 | 2006-08-18 | 圧力計および圧力計組立体 |
Country Status (5)
Country | Link |
---|---|
US (1) | US8037769B2 (ja) |
JP (1) | JP4911933B2 (ja) |
KR (1) | KR101274635B1 (ja) |
DE (1) | DE112006002271B4 (ja) |
WO (1) | WO2007026602A1 (ja) |
Cited By (1)
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CN106197832A (zh) * | 2016-08-19 | 2016-12-07 | 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 | 一种防冻防凝测压接头 |
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US20080216491A1 (en) * | 2007-03-08 | 2008-09-11 | Quest William J | Pressure gauges and methods of use |
CN103630290B (zh) * | 2012-08-17 | 2016-06-08 | 上海华虹宏力半导体制造有限公司 | 带旁路保护的铝刻蚀腔压力计管路 |
US10363383B2 (en) * | 2014-02-07 | 2019-07-30 | Trudell Medical International | Pressure indicator for an oscillating positive expiratory pressure device |
JP6556522B2 (ja) * | 2015-06-23 | 2019-08-07 | サーパス工業株式会社 | 圧力検出装置 |
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- 2006-08-18 KR KR1020087003936A patent/KR101274635B1/ko active IP Right Grant
- 2006-08-18 US US12/065,102 patent/US8037769B2/en active Active
- 2006-08-18 DE DE112006002271.7T patent/DE112006002271B4/de active Active
- 2006-08-18 WO PCT/JP2006/316668 patent/WO2007026602A1/ja active Application Filing
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JPS53129384U (ja) * | 1977-03-22 | 1978-10-14 | ||
JPS5697692A (en) * | 1979-12-28 | 1981-08-06 | Toyoda Gosei Kk | Joint for high pressure hose |
JPS61167832A (ja) * | 1985-01-19 | 1986-07-29 | Hiroshi Kasahara | 圧力計測装置 |
JPH06194248A (ja) * | 1992-12-22 | 1994-07-15 | Mitsubishi Electric Corp | 圧力センサ |
JPH08271367A (ja) * | 1995-03-30 | 1996-10-18 | Nok Corp | 圧力センサ |
JP2004012140A (ja) * | 2002-06-03 | 2004-01-15 | Saginomiya Seisakusho Inc | 圧力検知器 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106197832A (zh) * | 2016-08-19 | 2016-12-07 | 中国石油化工股份有限公司江汉油田分公司勘探开发研究院 | 一种防冻防凝测压接头 |
Also Published As
Publication number | Publication date |
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KR20080041208A (ko) | 2008-05-09 |
DE112006002271B4 (de) | 2024-01-25 |
DE112006002271T5 (de) | 2008-08-21 |
JP4911933B2 (ja) | 2012-04-04 |
US8037769B2 (en) | 2011-10-18 |
KR101274635B1 (ko) | 2013-06-13 |
JP2007064805A (ja) | 2007-03-15 |
US20090301207A1 (en) | 2009-12-10 |
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