CN204479417U - A kind of rock gas station process pipe gas pressure test system - Google Patents
A kind of rock gas station process pipe gas pressure test system Download PDFInfo
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- CN204479417U CN204479417U CN201520159809.9U CN201520159809U CN204479417U CN 204479417 U CN204479417 U CN 204479417U CN 201520159809 U CN201520159809 U CN 201520159809U CN 204479417 U CN204479417 U CN 204479417U
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- pressure
- gas station
- rock gas
- process pipe
- bag filter
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Abstract
The utility model discloses a kind of rock gas station process pipe gas pressure test system, described system comprises air compressor machine (1), bag filter (2) and rock gas station piping system; Air compressor machine (1) connects bag filter (2) by pipeline, and bag filter (2) connects top pressure level system in rock gas station by pipeline again, and rock gas station piping system is divided into two or more Pressure level according to pressure height.Pressure level pipeline each in process system is all cascaded by blow-down pipe and carries out overall pressure testing by rock gas station of the present utility model process pipe gas pressure test system, not only shorten the construction period, save executive cost simultaneously, decrease traditional pressure-measuring method and connect head workload, make system strength and tightness quality higher.
Description
Technical field
The utility model relates to municipal class pipework technical field of construction, particularly relates to a kind of rock gas station process pipe gas pressure test system, is applicable to the gas pressure test construction of various rock gas station.
Background technology
In recent years along with government is to the raising of the enhancing and national life level of administering air environmental pollution working dynamics, the status of this high-grade energy of rock gas in China's energy strategy is constantly promoted, thus impels gas transmission and distribution engineering to obtain fast development.
Gas transmission station is that rock gas carries out filtering, pressure regulation, metering, point defeated place, in station, process pipe is complicated, caliber is large, pipeline is many, as used water pressure testing routinely, then underground remittance tracheal strips water cannot be discharged, add the difficulty of later stage draining and dry process, for avoiding pressure testing water freezing in pipeline during winter construction, also need to increase pipe insulation, the construction period is long, operation is many, executive cost is high and pollution and waste water resource.
Utility model content
For solving existing natural gas transmission station gas pressure test Problems existing, the utility model provides a kind of rock gas station process pipe gas pressure test system.
The utility model adopts following technical scheme:
Rock gas station of the present utility model process pipe gas pressure test system comprises air compressor machine, bag filter and rock gas station piping system; Air compressor machine connects bag filter by pipeline, bag filter connects top pressure level system in the piping system of rock gas station by pipeline again, rock gas station piping system is divided into two or more Pressure level system according to pressure height, the pipeline of all Pressure level systems is connected as a whole by blow-down pipe, between different pressures level system, arrange dividing valve.
Blow-off line is connected to below described bag filter.
Described rock gas station piping system is divided into the two or more Pressure level systems in high pressure A, high pressure B, sub-high pressure A, sub-high pressure B, middle pressure A, middle pressure B and low pressure according to pressure size.
Respectively establish two pieces of tensimeters in each Pressure level system, lay respectively at top and the end of pressure testing system.
Each Pressure level system connects blowdown system.
The principle of rock gas station of the present utility model process pipe gas pressure test system is as follows:
Process system in gas transmission station is all cascaded by the utility model, closing presure dividing valve in advance in each Pressure level system, and only the dividing valve of reserved 1-2 convenient operation remains on opening.Pressure testing admission is selected in one end of top pressure level system main pipeline.When reaching certain Pressure level system strength test pressure during pressure testing, only need close reserved dividing valve, the connection of this system and gas handling system can be cut off, independently start the test voltage stabilizing of this system strength and do not affect other system gas transmission pressurization.
Good effect of the present utility model is as follows:
Pressure level pipeline each in process system is all cascaded and carries out overall pressure testing by rock gas station of the present utility model process pipe gas pressure test system, not only shorten the construction period, save executive cost simultaneously, decrease traditional pressure-measuring method and connect head workload, make system strength and tightness quality higher.Adopt pressurized air to replace clean water as test medium, thus solve winter that the hydraulic testing exists and execute and increase the difficult problems such as heat preservation construction and later stage draining, dry work for the treatment of amount are large, long in time limit.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the rock gas station process pipe gas pressure test system of the utility model embodiment 1;
Nip, 6 low-pressure areas, 7 pressure boundary valves in 1 air compressor machine, 2 bag filters, 3 blow-off lines, 4 higher-pressure regions, 5.
Fig. 2 is the process flow diagram of the pressure-measuring method of the rock gas station process pipe gas pressure test system of the utility model embodiment 1.
Embodiment
The following examples describe in further detail of the present utility model.
Embodiment 1
As shown in Figure 1, rock gas station of the present utility model process pipe gas pressure test system comprises air compressor machine 1, bag filter 2 and rock gas station piping system; Air compressor machine 1 connects bag filter 2 by pipeline, bag filter 2 connects the higher-pressure region of rock gas station piping system again by pipeline, rock gas station piping system is divided into higher-pressure region 4, middle nip 5 and low-pressure area 6 according to pressure height, the placed in series of higher-pressure region 4, middle nip 5 and low-pressure area 6 is as a whole, is provided with 1-2 pressure boundary valve 7 between adjacent two pressure systems.
Blow-off line 3 is connected to below described bag filter 2.
Respectively establish two pieces of tensimeters in higher-pressure region 4, middle nip 5 and low-pressure area 6, lay respectively at top and the end of pressure testing system.
Higher-pressure region 4, middle nip 5 are all connected blowdown system with low-pressure area 6.
As shown in Figure 2, concrete test method is as follows for the pressure testing flow process of rock gas station of the present utility model process pipe gas pressure test system:
(1) gas pressure test accordance safety compute
Process pipe in gas transmission station can adopt air pressure testing when meeting terms and conditions in table 1,
Process pipe air pressure testing condition in table 1 gas transmission station
During 1 pressure testing, maximum of hoop stress computing formula refers to as follows:
In formula:
h---the pipeline circumference stress (MPa) produced by interior pressure
P---interior pressure (MPa) during pipeline pressure test
D---ips (cm)
n---pipe nominal wall thickness (cm)
The yield strength of 2 pipes looks into Materials Handbook;
3 complete penetraction and fusion in welding open joints, 100% Non-Destructive Testing, weld joint factor is 1.0.
Two, system plugging
1 at the ellipse head of end of line welding to the corresponding bearing capacity of design pipeline, closing device and pipe end position valve;
2 pairs of equipment such as metering, pressure regulation, safety valve can not participating in purging, carry out being communicated with or pipeline section blind flange, blind plate etc. carry out shutoff before and after metering, voltage adjusting device at device location flange connections;
First 3 install explosion sheet asbestos at an explosion mouth place.
Three, pressure boundary valve is arranged and tensimeter installation
1 selects the valve of 1-2 convenient operation as pressure boundary valve 7 at each Pressure level system separation place;
Respectively establish two pieces of tensimeters in 2 each Pressure level systems, lay respectively at top and the end of pressure testing system, tensimeter accuracy class meets code requirement, and in the verification term of validity.
Four, air compressor machine is connected with system
1 connects air compressor machine 1 in perforate in pipeline top high-pressure system of entering the station;
2 enter process pipe for preventing air compressor machine machine oil with pressurized air, air filtration bag 2 is set after air compressor machine, just process pipe can be entered after air compressor machine 1 pressurized air out must wrap 2 filtration greasy dirts after filtration, after air compressor machine 1 blow gas enters bag filter 2 at a high speed, greasy dirt in gas is attached on bag filter 2 wall, being deposited on bag filter 2 end is discharged by blowoff valve, thus reaches the effect of wipe oil.
Five, system boosting
For accelerating intake velocity, first selecting huge discharge air compressor machine (V=30m3/min, P=2.4MPa), during close to air compressor air intake pressure limit, changing high pressure air compressor machine
continue be forced into test pressure 50%, then carry out initial survey, as nothing leakage, extremely, should continue to boost step by step by 10% of test pressure, every grade of voltage stabilizing 3min, until test pressure.
Six, strength test
1 when system pressure rises to low-pressure area 6 Strengh testing pressure, closes mesolow district dividing valve, makes a strength test to low-pressure area 6; Pressurization is continued to high, medium voltage network, when system pressure rise to middle nip 5 suppress time, close high pressure district dividing valve, centering nip 5 makes a strength test; Pressurization is continued to high-pressure system, when system pressure rises to higher-pressure region semi-finals pressure, stops pressurization, close gas admittance valve, higher-pressure region 4 is made a strength test;
2 strength test voltage stabilizings 4 hours, pipeline range estimation is without distortion, ne-leakage, and it is qualified to reduce to without pressure.
Seven, leak test
After strength test is qualified, opens blowdown valve in each system respectively and be down to leak test pressure and carry out leak test, voltage stabilizing 24 hours is also strictly hunted leak with leakiness positions such as suds butt welded seam and flanges, and No leakage is qualified.
Eight, pressure release
Control blowdown valve open amount in each Pressure level system well, slowly let out to normal pressure, reduce noise pollution.
Although illustrate and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments when not departing from principle of the present utility model and spirit, scope of the present utility model is by claims and equivalents thereof.
Claims (5)
1. a rock gas station process pipe gas pressure test system, is characterized in that: described system comprises air compressor machine (1), bag filter (2) and rock gas station piping system; Air compressor machine (1) connects bag filter (2) by pipeline, bag filter (2) connects top pressure level system in rock gas station by pipeline again, rock gas station piping system is divided into two or more Pressure level system according to pressure height, the pipeline of all Pressure level systems is connected as a whole by blow-down pipe, arrange dividing valve (7) between different pressures level system.
2. rock gas station as claimed in claim 1 process pipe gas pressure test system, is characterized in that: described bag filter (2) below is connected to blow-off line (3).
3. rock gas station as claimed in claim 1 process pipe gas pressure test system, is characterized in that: described rock gas station piping system is divided into the two or more Pressure level systems in high pressure A, high pressure B, sub-high pressure A, sub-high pressure B, middle pressure A, middle pressure B and low pressure according to pressure size.
4. rock gas station as claimed in claim 1 process pipe gas pressure test system, is characterized in that: respectively establish two pieces of tensimeters in each Pressure level system, lays respectively at top and the end of pressure testing system.
5. rock gas station as claimed in claim 1 process pipe gas pressure test system, is characterized in that: each Pressure level system connects blowdown system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159809.9U CN204479417U (en) | 2015-03-20 | 2015-03-20 | A kind of rock gas station process pipe gas pressure test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520159809.9U CN204479417U (en) | 2015-03-20 | 2015-03-20 | A kind of rock gas station process pipe gas pressure test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204479417U true CN204479417U (en) | 2015-07-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520159809.9U Expired - Fee Related CN204479417U (en) | 2015-03-20 | 2015-03-20 | A kind of rock gas station process pipe gas pressure test system |
Country Status (1)
| Country | Link |
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| CN (1) | CN204479417U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181251A (en) * | 2015-09-22 | 2015-12-23 | 山东康迪泰克工程橡胶有限公司 | Pulse segmented pressure testing device and pressure testing method |
| CN110333142A (en) * | 2019-08-20 | 2019-10-15 | 来安县浦创轨道装备有限公司 | A kind of water tank water pressure testing board |
| CN112729716A (en) * | 2020-12-04 | 2021-04-30 | 上海宝冶集团有限公司 | Integral pressure test method for long-distance pipeline of refrigeration system for snowmobile ski track |
| CN114963017A (en) * | 2022-04-24 | 2022-08-30 | 深圳市燃气集团股份有限公司 | Natural gas line hydrogen-mixing comprehensive experiment system device |
-
2015
- 2015-03-20 CN CN201520159809.9U patent/CN204479417U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181251A (en) * | 2015-09-22 | 2015-12-23 | 山东康迪泰克工程橡胶有限公司 | Pulse segmented pressure testing device and pressure testing method |
| CN110333142A (en) * | 2019-08-20 | 2019-10-15 | 来安县浦创轨道装备有限公司 | A kind of water tank water pressure testing board |
| CN112729716A (en) * | 2020-12-04 | 2021-04-30 | 上海宝冶集团有限公司 | Integral pressure test method for long-distance pipeline of refrigeration system for snowmobile ski track |
| CN114963017A (en) * | 2022-04-24 | 2022-08-30 | 深圳市燃气集团股份有限公司 | Natural gas line hydrogen-mixing comprehensive experiment system device |
| CN114963017B (en) * | 2022-04-24 | 2023-12-12 | 深圳市燃气集团股份有限公司 | Natural gas line hydrogen-adding comprehensive experiment system device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150715 Termination date: 20180320 |