CA1168552A - Pressure transmitter - Google Patents
Pressure transmitterInfo
- Publication number
- CA1168552A CA1168552A CA000394858A CA394858A CA1168552A CA 1168552 A CA1168552 A CA 1168552A CA 000394858 A CA000394858 A CA 000394858A CA 394858 A CA394858 A CA 394858A CA 1168552 A CA1168552 A CA 1168552A
- Authority
- CA
- Canada
- Prior art keywords
- housing
- bodies
- portions
- bellows
- recesses
- 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
Links
- 239000012530 fluid Substances 0.000 claims abstract description 12
- 238000005192 partition Methods 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims 1
- 208000009989 Posterior Leukoencephalopathy Syndrome Diseases 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B3/00—Intensifiers or fluid-pressure converters, e.g. pressure exchangers; Conveying pressure from one fluid system to another, without contact between the fluids
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
V. N. Lawford - 13 PRESSURE TRANSMITTER
ABSTRACT OF THE DISCLOSURE
An isolator or the like for nuclear power stations employed to separate two fluids or two pressures or other sensing instruments from the containment or elsewhere.
ABSTRACT OF THE DISCLOSURE
An isolator or the like for nuclear power stations employed to separate two fluids or two pressures or other sensing instruments from the containment or elsewhere.
Description
V. N. Lawford - 13 ~i85~Z
PRES~URE TRANSMITTER
BACKGROUND OF THE INVENTION
.
This invention relates to means for transmitting pressures through two or more separated fluids, and more particularly to an instrument akin to a differential pressure unit (DPU).
PRIOR ART STATEMENT
A typical DPU of the prior art is shown in U.S.
Patent No. 2,6~4,749 issued January 5, 1954.
Devices to isolate, for reasons of temperature, radioactivity or for other reasons, relative to the operation of a nuclear power station are known from U.S.
Patent No. 3,696,659 issued October 10, 1972, and U.S.
Patent No. 3,956,937 issued May 18, 1976.
In the prior art, excessive liquids expand excessively when heated in such devices. This causes excessive elongation of the sensor bellows.
SUMMARY OF THE INVENTION
:
In accordance with the device of the present invention, the above-described and other disadvantages of the prior art are overcome by providing a sensitive fluid responsive device, said device comprising: a housing having a central transverse partition and first and second enclosing side walls, said housing having an opening thereinto on each side of said partition; first and second bellows each having a fixed end sealed around respective ~168SS~ v. N. Law~ord - 13 opposite sides of said partition, said first and second bellows having first and second closed movable ends witn first and second respective recesses, said recesses extending inwardly toward said partition; first and second bodies; first means; second means, said first means and said second means fixing said first and second bodies relative to said housing, said bodies being fixed relative to said housing in positions and having ~irst and second respective portions nesting in said fiest an~ second recesses, respectively, said first and second bodies' first and second portions filling major portions of the volumes of the respective first and second recesses; and incompressible fluid portions inside each of said bellows filling the same and being in communication with each other.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings which illustrate an exemplary embodiment of the present invention:
Fig. 1 is a longitudinal sectional view of an isolator constructed in accordance with the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In Fig. 1, an isolator 10 similar to a differential pressure unit (DPU) is shown. Isolator 10 has a housing 11 including members 12 and 13 having cylindrical external and internal surfaces 14, 15 and 16, 17, respectively.
Surfaces 15 and 17 partially enclose essentially fluid tight chambers 18 and 19, respectively.
Inlet and/or outlet openings into and/or out of chamber 18 are provided at 20 and 21.
- la -~6~
Openings into and/or out of chamber 19 are provided at 22 and 23.
Everything outside the mathemetical surface passing through surfaces 15 and 17 may be conventional.
Everything inside the same said mathematical surface may be conventional except end walls 24 and 25 of housing castings 26 and 27, respectively, plugs 28 and 29, threaded pins 30 and 31, and welds 32 and 33 connecting pins 30 and 31 to end walls 24 and 25, respectively.
Parts 34, 35, 36 and 37 form a partition with chambers 18 and 19 having fluid tight seals.
Bellows 38 and 39 each are provided with an incompressible fluid filling the same, wherein the fluid in one is in communication with-that in the other.
Conventional overrange valves are provided at 40 and 41 having O-rings at 42 and 43, respectively. FOJ: example, see O-rings 3i and 32 in U.S. Patent No. 2,632,474 issued March 24, 1953, and overrange valve seats 29 and 30, respectively.
Recessed ends 44 and 45 of bellows 38 and 39, respectively, are fixed relative to each other by stem 46 as is conventional.
Bores 47 and 4~ are large enough- ta permi~-the incompressible fluid to flow from inside one bellows to inside the other or vice versa. For the remaining structures see the last mentioned patent.
OPERATION
When the pressure in chamber 18 is higher than that in chamber 19, bellows 38 tends to collapse and bellows 39 tends to expand. The contrary is likewise tr~le.
If the maximum differential pressure is very low, the bellows spring force constants may be negligible. If not, the spring forces may or may not stop bellows movements before an overrange valve closes.
3~16~5~
Although the differential pressure may be indicated, it need not be indicated.
A switch for an alarm may also be provided, but may be unnecessary.
S One important purpose of the present invention is to cause the pressure in chamber 18 to operate something in communication with chamber 19 or vice versa without the fluids in chambers 18 or l9 mixing.
See the first two patents cited herein for further utility.
PRES~URE TRANSMITTER
BACKGROUND OF THE INVENTION
.
This invention relates to means for transmitting pressures through two or more separated fluids, and more particularly to an instrument akin to a differential pressure unit (DPU).
PRIOR ART STATEMENT
A typical DPU of the prior art is shown in U.S.
Patent No. 2,6~4,749 issued January 5, 1954.
Devices to isolate, for reasons of temperature, radioactivity or for other reasons, relative to the operation of a nuclear power station are known from U.S.
Patent No. 3,696,659 issued October 10, 1972, and U.S.
Patent No. 3,956,937 issued May 18, 1976.
In the prior art, excessive liquids expand excessively when heated in such devices. This causes excessive elongation of the sensor bellows.
SUMMARY OF THE INVENTION
:
In accordance with the device of the present invention, the above-described and other disadvantages of the prior art are overcome by providing a sensitive fluid responsive device, said device comprising: a housing having a central transverse partition and first and second enclosing side walls, said housing having an opening thereinto on each side of said partition; first and second bellows each having a fixed end sealed around respective ~168SS~ v. N. Law~ord - 13 opposite sides of said partition, said first and second bellows having first and second closed movable ends witn first and second respective recesses, said recesses extending inwardly toward said partition; first and second bodies; first means; second means, said first means and said second means fixing said first and second bodies relative to said housing, said bodies being fixed relative to said housing in positions and having ~irst and second respective portions nesting in said fiest an~ second recesses, respectively, said first and second bodies' first and second portions filling major portions of the volumes of the respective first and second recesses; and incompressible fluid portions inside each of said bellows filling the same and being in communication with each other.
BRIEF DESCRIPTION OF THE DRAWINGS
In the accompanying drawings which illustrate an exemplary embodiment of the present invention:
Fig. 1 is a longitudinal sectional view of an isolator constructed in accordance with the present invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
In Fig. 1, an isolator 10 similar to a differential pressure unit (DPU) is shown. Isolator 10 has a housing 11 including members 12 and 13 having cylindrical external and internal surfaces 14, 15 and 16, 17, respectively.
Surfaces 15 and 17 partially enclose essentially fluid tight chambers 18 and 19, respectively.
Inlet and/or outlet openings into and/or out of chamber 18 are provided at 20 and 21.
- la -~6~
Openings into and/or out of chamber 19 are provided at 22 and 23.
Everything outside the mathemetical surface passing through surfaces 15 and 17 may be conventional.
Everything inside the same said mathematical surface may be conventional except end walls 24 and 25 of housing castings 26 and 27, respectively, plugs 28 and 29, threaded pins 30 and 31, and welds 32 and 33 connecting pins 30 and 31 to end walls 24 and 25, respectively.
Parts 34, 35, 36 and 37 form a partition with chambers 18 and 19 having fluid tight seals.
Bellows 38 and 39 each are provided with an incompressible fluid filling the same, wherein the fluid in one is in communication with-that in the other.
Conventional overrange valves are provided at 40 and 41 having O-rings at 42 and 43, respectively. FOJ: example, see O-rings 3i and 32 in U.S. Patent No. 2,632,474 issued March 24, 1953, and overrange valve seats 29 and 30, respectively.
Recessed ends 44 and 45 of bellows 38 and 39, respectively, are fixed relative to each other by stem 46 as is conventional.
Bores 47 and 4~ are large enough- ta permi~-the incompressible fluid to flow from inside one bellows to inside the other or vice versa. For the remaining structures see the last mentioned patent.
OPERATION
When the pressure in chamber 18 is higher than that in chamber 19, bellows 38 tends to collapse and bellows 39 tends to expand. The contrary is likewise tr~le.
If the maximum differential pressure is very low, the bellows spring force constants may be negligible. If not, the spring forces may or may not stop bellows movements before an overrange valve closes.
3~16~5~
Although the differential pressure may be indicated, it need not be indicated.
A switch for an alarm may also be provided, but may be unnecessary.
S One important purpose of the present invention is to cause the pressure in chamber 18 to operate something in communication with chamber 19 or vice versa without the fluids in chambers 18 or l9 mixing.
See the first two patents cited herein for further utility.
Claims (4)
1. A sensitive fluid responsive device, said device comprising: a housing having a central transverse partition and first and second enclosing side walls, said housing having an opening thereinto on each side of said partition; first and second bellows each having a fixed end sealed around respective opposite sides of said partition, said first and second bellows having first and second closed movable ends with first and second respective recesses, said recesses extending inwardly toward said partition; first and second bodies; first means; second means, said first means and said second means fixing said first and second bodies relative to said housing, said bodies being fixed relative to said housing in positions and having first and second respective portions nesting in said first and second recesses, respectively, said first and second bodies' first and second portions filling major portions of the volumes of the respective first and second recesses; and incompressible fluid portions inside each of said bellows filling the same and being in communication with each other.
2. The invention as defined in claim 1, wherein said housing has a construction forming first and second chambers outside said recesses and outside said first and second bellows, respectively, said first and second bodies having third and forth portions, respectively, occupying substantially all of the space within said first and second chambers, respectively.
3. The invention as defined in claim 2, wherein said housing includes first and second end walls partially defining said first and second chambers, respectively, said first and second means fixing said third and forth portions of said first and second bodies, respectively, to said first and second housing end walls, respectively.
4. The invention as defined in claim 1, wherein said housing includes first and second end walls partially defining said first and second chambers, respectively, said first and second means fixing said third and forth portions of said first and second bodies, respectively, to said first and second housing end walls, respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US22824181A | 1981-01-26 | 1981-01-26 | |
| US228,241 | 1981-01-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1168552A true CA1168552A (en) | 1984-06-05 |
Family
ID=22856368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000394858A Expired CA1168552A (en) | 1981-01-26 | 1982-01-25 | Pressure transmitter |
Country Status (9)
| Country | Link |
|---|---|
| JP (1) | JPS57142535A (en) |
| BE (1) | BE891889A (en) |
| CA (1) | CA1168552A (en) |
| DE (1) | DE3201231A1 (en) |
| ES (1) | ES8702991A1 (en) |
| FR (1) | FR2498697B1 (en) |
| GB (1) | GB2093920B (en) |
| IT (1) | IT1195909B (en) |
| SE (1) | SE449509B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2728632A1 (en) * | 1994-07-15 | 1996-06-28 | Le Moal Pierre | Process for propulsion of fluid by external fluid source |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2664749A (en) * | 1948-01-10 | 1954-01-05 | Jones Barton | Fluid pressure responsive equipment |
| US2945510A (en) * | 1957-09-10 | 1960-07-19 | Jones Barton | Valve release for differential pressure responsive devices |
| US3756126A (en) * | 1972-01-20 | 1973-09-04 | Itt | Sealing ring |
-
1982
- 1982-01-16 DE DE19823201231 patent/DE3201231A1/en not_active Withdrawn
- 1982-01-19 GB GB8201492A patent/GB2093920B/en not_active Expired
- 1982-01-21 SE SE8200319A patent/SE449509B/en not_active IP Right Cessation
- 1982-01-22 IT IT19249/82A patent/IT1195909B/en active
- 1982-01-25 CA CA000394858A patent/CA1168552A/en not_active Expired
- 1982-01-25 ES ES509034A patent/ES8702991A1/en not_active Expired
- 1982-01-25 JP JP57009039A patent/JPS57142535A/en active Pending
- 1982-01-26 FR FR8201155A patent/FR2498697B1/en not_active Expired
- 1982-01-26 BE BE2/59554A patent/BE891889A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| IT8219249A0 (en) | 1982-01-22 |
| BE891889A (en) | 1982-07-26 |
| GB2093920B (en) | 1984-06-06 |
| ES509034A0 (en) | 1987-01-16 |
| JPS57142535A (en) | 1982-09-03 |
| FR2498697A1 (en) | 1982-07-30 |
| GB2093920A (en) | 1982-09-08 |
| SE449509B (en) | 1987-05-04 |
| IT1195909B (en) | 1988-11-03 |
| SE8200319L (en) | 1982-07-27 |
| DE3201231A1 (en) | 1982-09-16 |
| FR2498697B1 (en) | 1987-10-09 |
| ES8702991A1 (en) | 1987-01-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |