GB2377266A - Fluid pressure reducer with two part detachable housing. - Google Patents
Fluid pressure reducer with two part detachable housing. Download PDFInfo
- Publication number
- GB2377266A GB2377266A GB0205557A GB0205557A GB2377266A GB 2377266 A GB2377266 A GB 2377266A GB 0205557 A GB0205557 A GB 0205557A GB 0205557 A GB0205557 A GB 0205557A GB 2377266 A GB2377266 A GB 2377266A
- Authority
- GB
- United Kingdom
- Prior art keywords
- inlet
- casing
- pressure reducer
- outlet
- valve
- 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.)
- Granted
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims description 22
- 239000012530 fluid Substances 0.000 title abstract 2
- 239000012528 membrane Substances 0.000 claims abstract description 13
- 239000000428 dust Substances 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 229920000544 Gore-Tex Polymers 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000004758 synthetic textile Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/063—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane
- G05D16/0644—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator
- G05D16/0655—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a membrane the membrane acting directly on the obturator using one spring-loaded membrane
Abstract
Two bodies 1, 12 form a device to control fluid pressure in, for example, underground pipes. The first body 1, is split into two parts, a bonnet 3 and an expansion chamber 5 by a membrane 2 held in place by a spring 4. The expansion chamber 5 has two holes leading to inlet 9 and outlet 6 ports of the second body 12. The inlet port 9 of the expansion chamber 5 has a lift valve 7. The second body 12 has an inlet 10 and outlet 11 formed with the body 12 which meet up with the inlet and outlet ports 9,6 of the first body 1 when the two bodies are joined together. The bodies 1,12 may be held together by a clip 13. A ball valve 15 is fitted to the inlet 10 of the second body 12 which automatically opens via a push rod 14 when the two bodies 1,12 are fitted together. The lift valve 7 is attached to a ramp and spring mechanism 21,22 so the valve 7 can be manually closed. A pressure relief valve 25 may also be provided. In another embodiment, the ball valve 15 may be replaced by plug cock (26, fig 2).
Description
- 1 - 2377266
Gas pressure reducer forming a casing The present invention relates to gas pressure reducers to be placed, in particular, on buried pipelines.
A device intended to be buried and which comprises a casing is already known. Attached to this casing are an inlet and an outlet often each equipped with a cock. A gas pressure reducer is mounted separately in the 10 casing. The volume of the assembly is large as is the number of parts. Assembly entails fitting a great many seals, all this having to be done while the assembly is in place and therefore in a trench before being buried.
Dismantling in particular is lengthy and expensive to 15 perform.
The invention is aimed at a gas pressure reducer which can be buried, which is far easier to assemble and to dismantle than gas pressure reducers of the prior art
20 which are intended to be buried, and which has fewer independent parts.
The subject of the invention is a gas pressure reducer comprising a body subdivided by a membrane into a 25 bonnet in which is held a spring pressed against the membrane and into an expansion chamber communicating with an outlet port and, via valve, with an inlet port.
According to the invention, the gas pressure reducer comprises an inlet and an outlet of one piece with a 30 casing surrounding the body and which form the bottom of the casing and the body is mounted removably in the casing so that the inlet port coincides with the inlet and so that the outlet port coincides with the outlet and a means intended to lift off its seat, when the 35 body is mounted in the casing, a first shutter interrupting the communication between the inlet port and the inlet.
- 2 - The expression "of one piece with" does not preclude certain parts of the casing being made of a different material from the remainder of the casing, for example being overmoulded onto them.
The entire gas pressure reducer is assembled at the factory and then placed in the ground. If the actual gas pressure reducing part, that is to say the body, becomes defective, it is easy to remove it from the 10 casing and replace it.
Although the gas pressure reducer places the inlet and the outlet in communication when it is buried and assembled, it may be desirable, in the event of an 15 incident or to deliberately interrupt the supply of gas, to break this communication. This is why there is provided a mechanism intended to place a second shutter in the position in which it interrupts the communication while the body is mounted in the casing.
20 According to another embodiment, the mechanism comprises a yoke coming into abutment against a shoulder of a control rod and moved by a ramp against which it is returned by a return spring. It is also possible to provide a cock mounted in the inlet and 25 controlled by a rotation of the body.
Here again, the ensemble may be assembled at the factory with mounting on site. A pressure tapping ending in a pressure valve and opening into the inlet 30 or into the inlet port is provided so as to allow the pressure in the inlet to be known, and also to be able to rearm a safety device possibly placed upstream.
According to one embodiment that allows the casing to 35 be adapted to suit different depths of burial, the casing is made of two telescopic parts connected vertically and is equipped at the top with a membrane which is permeable to air and impermeable to water and dust.
In the appended drawing which is given merely by way of example:
5 Figure 1 is a schematic view in cross section of a pressure reducer according to the invention, and Figure 2 is a similar view of an alternative form.
10 The gas pressure reducer depicted in Figure 1 comprises a body 1 subdivided by a membrane 2 into a bonnet 3 in which a spring 4 is housed, one of the ends of which spring presses against the membrane 2 and the other end of which spring presses against an interior top face of 15 the body 1, and into an expansion chamber 5. The expansion chamber communicates with an outlet port 6 and, via a valve comprising a second shutter 7 and a seat 8, with an inlet port 9.
20 The pressure reducer comprises an inlet 10 and an outlet 11 of one piece with a casing 12 surrounding the body 1. The inlet 10 and the outlet 11 form part of the bottom of the casing 12. The body 1 is mounted so that it can slide in the casing 12, being held in place at 25 the bottom of the casing 12 by a clip fastening 13.
However, the body 1 could also be screwed into the bottom of the casing 12 with the possibility of unscrewing it in order to remove it. When the body 1 is mounted in the casing 12, the inlet port 9 coincides 30 with the inlet 10 and the outlet port 6 coincides with the outlet 11.
A push-rod 14 is provided at the bottom of the body and it, when the body 1 is placed in the bottom of the 35 casing, pushes back a first shutter 15 against the force of a spring 16, so that the shutter is lifted off its seat 17. When the shutter 15 is applied against the seat 17, it interrupts the communication between the
- 4 inlet 10 and the inlet port 9. When it is lifted off the seat 17, the communication is established.
The shutter 7 is secured by a rod 18 to the membrane 2 5 and is extended on the other side from the membrane and ends in a shoulder 19 to which is attached a yoke 20 applied via a return spring 21 to a ramp 22 which can be turned by hand with respect to an axis 23 so that the shoulder 19 is moved away from the membrane 2 when 10 there is turning about the axis 23 and which, via the rod 18, applies the shutter 7 against the seat 8.
An awaiting plug is also provided, which is not depicted and which has the same shape as the body 1.
15 When the body 1 is removed to replace it or to carry out repairs, the awaiting plug is fitted in the casing in the meantime.
A pressure tapping 24 ending in a pressure valve 25 20 opens into the inlet port 9.
The casing 12 comprises two parts 12a, 12b mounted telescopically and in a sealed manner so that their height can be adjusted.
The embodiment of Figure 2 differs from that depicted in Figure 1 in that the inlet 10 and outlet 11 are horizontal, whereas they were vertical in Figure 1, and in that the mechanism intended to place the shutter in 30 the position in which it interrupts the communication while the body is mounted in the casing comprises a cock 26 mounted in the inlet 10 and also controlled by rotating the body 1 about the vertical axis 23. The cock for this purpose comprises a square drive 28 35 collaborating through complementary shapes with a tail end 29 of the body 1.
The pressure reducers of Figure 1 and Figure 2 can be placed under a bell C. The top part of the upper
telescopic part 12b is equipped with a membrane 27 that is impermeable to water and dust and permeable to air, for example made of synthetic textile, such as gortex (trade name).
The pressure reducer mechanism may comprise a cam 20 coming into abutment with a shoulder 19 of a control rod 18 secured to the second shutter 7 and moved by a ramp 22 against which it is returned by a return spring 10 21. -
Claims (7)
1. Gas pressure reducer comprising a body (1) subdivided by a membrane (2) into a bonnet (3) in which 5 is held a spring (4) pressed against the membrane (2) and into an expansion chamber (5) communicating with an outlet port (6) and, via a valve (7, 8), with an inlet port (9), characterized in that it comprises an inlet (10) and an outlet (11) of one piece with a casing (12) 10 surrounding the body (1) and which form part of the bottom of the casing and the body (1) is mounted removably in the casing (12) so that the inlet port (9) coincides with the inlet (10) and so that the outlet port (6) coincides with the outlet (11).and a means 15 (14) intended to lift off its seat (17), when the body (1) is mounted in the casing (12), a first shutter (15) interrupting the communication between the inlet port (9) and the inlet (10).
20
2. Pressure reducer according to Claim 1, characterized by a mechanism intended to place a second shutter (7) in the position in which it interrupts the communication while the body (1) is mounted in the casing (12).
3. Pressure reducer according to Claim 2, characterized in that the mechanism comprises a cam (20) coming into abutment against a shoulder (19) of a control rod (18) secured to the second shutter (7) and 30 moved by a ramp (22) against which it is returned by a return spring (21).
4. Pressure reducer according to Claim 1, characterized in that it comprises a cock (26) mounted 35 in the inlet (10) and controlled by a rotation of the body (1).
5. Pressure reducer according to one of the preceding claims, characterized by a pressure tapping (24) ending
- 7 in a pressure valve (25) and opening into the inlet (10) or into the inlet port (9).
6. Pressure reducer according to one of the preceding 5 claims, characterized in that the casing is made of two telescopic parts connected vertically.
7. Pressure reducer according to one of the preceding claims, characterized in that the top of the casing has 10 a membrane (27) which is permeable to air and impermeable to water and dust.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0103231A FR2821939B1 (en) | 2001-03-09 | 2001-03-09 | GAS REGULATOR FORMING BOX |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB0205557D0 GB0205557D0 (en) | 2002-04-24 |
| GB2377266A true GB2377266A (en) | 2003-01-08 |
| GB2377266B GB2377266B (en) | 2004-06-23 |
Family
ID=8860929
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB0205557A Expired - Fee Related GB2377266B (en) | 2001-03-09 | 2002-03-08 | Gas pressure reducer forming a casing |
Country Status (4)
| Country | Link |
|---|---|
| DE (1) | DE10210089A1 (en) |
| FR (1) | FR2821939B1 (en) |
| GB (1) | GB2377266B (en) |
| IT (1) | ITGE20020021A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1076581A (en) * | 1965-01-01 | 1967-07-19 | Westinghouse Brake & Signal | Fluid control valve |
| GB1130930A (en) * | 1965-01-18 | 1968-10-16 | Grove Valve & Regulator Compan | Fluid control valve construction |
| GB1223122A (en) * | 1967-07-27 | 1971-02-24 | United Gas Industries Ltd | Fluid pressure governors |
| GB1319583A (en) * | 1969-09-11 | 1973-06-06 | Wigley A F | Underground stop valves |
| FR2727773A1 (en) * | 1994-12-02 | 1996-06-07 | Briffault Sa | Underground gas pressure regulator protected against flooding |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2447573B1 (en) * | 1979-01-24 | 1985-08-16 | Briffault Sa | GAS REGULATOR |
| IT1302646B1 (en) * | 1998-10-12 | 2000-09-29 | Pagani Algela | DOUBLE STAGE PRESSURE REGULATOR WITH DOUBLE SAFETY, PARTICULARLY FOR LIQUID GAS CYLINDERS. |
| US6158457A (en) * | 1999-05-18 | 2000-12-12 | Western/Scott Fetzer Company | Gas pressure control apparatus |
-
2001
- 2001-03-09 FR FR0103231A patent/FR2821939B1/en not_active Expired - Fee Related
-
2002
- 2002-03-08 DE DE10210089A patent/DE10210089A1/en not_active Withdrawn
- 2002-03-08 IT IT2002GE000021A patent/ITGE20020021A1/en unknown
- 2002-03-08 GB GB0205557A patent/GB2377266B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1076581A (en) * | 1965-01-01 | 1967-07-19 | Westinghouse Brake & Signal | Fluid control valve |
| GB1130930A (en) * | 1965-01-18 | 1968-10-16 | Grove Valve & Regulator Compan | Fluid control valve construction |
| GB1223122A (en) * | 1967-07-27 | 1971-02-24 | United Gas Industries Ltd | Fluid pressure governors |
| GB1319583A (en) * | 1969-09-11 | 1973-06-06 | Wigley A F | Underground stop valves |
| FR2727773A1 (en) * | 1994-12-02 | 1996-06-07 | Briffault Sa | Underground gas pressure regulator protected against flooding |
Also Published As
| Publication number | Publication date |
|---|---|
| ITGE20020021A1 (en) | 2002-09-09 |
| GB0205557D0 (en) | 2002-04-24 |
| FR2821939A1 (en) | 2002-09-13 |
| ITGE20020021A0 (en) | 2002-03-08 |
| GB2377266B (en) | 2004-06-23 |
| FR2821939B1 (en) | 2003-05-16 |
| DE10210089A1 (en) | 2002-09-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20100308 |