CN204604217U - A kind of stopping transportation pressure changes the device of high compression diameter ball valve - Google Patents
A kind of stopping transportation pressure changes the device of high compression diameter ball valve Download PDFInfo
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- CN204604217U CN204604217U CN201520123737.2U CN201520123737U CN204604217U CN 204604217 U CN204604217 U CN 204604217U CN 201520123737 U CN201520123737 U CN 201520123737U CN 204604217 U CN204604217 U CN 204604217U
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Abstract
Stopping transportation pressure changes a device for high compression diameter ball valve, comprises block head (1), action bars (8), high pressure sealing storehouse (4), split-type crossbeam (7), connecting screw rod (11), ring-shaped clip (2) etc.High pressure sealing storehouse (4) is connected with ball valve (3) by flange, connecting screw rod (11) one end is fastenedly connected by ring-shaped clip (2) and the pipeline (12) before valve, one end is connected with split-type crossbeam (7), promotes split-type crossbeam (7), action bars (8) and block head (1) move together by the nut (6) on twisting connecting screw rod.Split-type crossbeam (7) has two, and another root mainly, after valve dismounting, is placed between valve and underwater flange, plays the effect of secondary fixing operation bar (8).The stopping transportation pressure that the utility model device can realize high compression diameter ball valve safely, is quickly changed, and device adopts theory of mechanics, have safe and reliable, seal point is few, the feature such as simple to operate.
Description
Technical field
The utility model device belongs to long oil and gas pipeline valve dimension damage repair technology field, mainly provides the device needed for the online replacing high compression diameter ball valve with pressure of a kind of on-line production.
Background technology
Long oil and gas pipeline often uses all kinds of high compression diameter ball valve in bypass flow process and arm, in long-play process these valves often occur valve body leakage, valves leakage, sand holes, flange leakage, cannot a series of potential safety hazard such as greasing maintenance, on-the-spot except taking interim measures except these potential safety hazards of respite, in order to thoroughly solve the potential safety hazard at this kind of valve place, just need the valve more renewed.Because general all long with the oil gas defeated backbone of this kind of valve is directly connected, pressure is high, belong to again inflammable, explosive medium, in order to ensure job safety, traditional method changes new valve after stopping transportation main line, emptying, displacement, does the normal operation not only having a strong impact on pipeline like this, and certainly will cause a large amount of wastings of resources, particularly high pressure gas pipeline, once such operation at least needs the natural gas of emptying tens side.Although also have a kind of press and open holes, blocking technology at present, stopping transportation pressure can be realized and change valve, but for this kind of bypath valve, often have that pressure is high, tube wall is thin, valve undergauge, working space are narrow, flow development length is little, do not have the problems such as plugging holes position, press and open holes, shutoff cannot be realized.But this type of valve also has a feature, is exactly that one end is connected with pressure all the time with oil gas main line, and the other end generally can pressure release emptying, have developed this cover to carry out axial shutoff from valve one end, change the device of valve according to this feature.
Summary of the invention
The utility model device can without stopping transportation, emptying main line, also need not weld when getting angry, ball valve on the bypass that online replacing with pressure is connected with main line and arm, device all adopts theory of mechanics, there is the features such as safe and reliable, seal point is few, easy for installation, simple to operate, efficiency is high, duty cycle is short, and the normal operation of main line can not be affected, the more important thing is that the block head taked the mode of indirectly fixing block head in outside to solve by device the little and undergauge of valve internal diameter causes cannot in the firm blocking problem of pipe interior.The special novel plugging structure for changing reducing ball valve development, can attenuate under squeezing action, thus the smooth undergauge valve thinner by internal diameter, again can extrusion expansion be thicker blocks the thicker pipeline of internal diameter, solve the how smooth undergauge valve thinner by internal diameter of plugging structure simultaneously, but also the problem of thicker these two the relative contradictions of pipe interior high pressure of internal diameter will be blocked.
Whole device mainly comprises block head (1), action bars (8), high pressure sealing storehouse (4), split-type crossbeam (7), connecting screw rod (11), ring-shaped clip (2) etc., the high pressure sealing storehouse of described device is coupled together with needing the reducing ball valve (3) changed by high pressure flange, one end of connecting screw rod (11) pass through earflap on ring-shaped clip (2) all the time with valve to be replaced before pipeline (12) be fastenedly connected.
Block head (1) is a kind of special novel plugging structure for changing reducing ball valve development, shutoff principle is under the promotion of action bars (8), block head (1) is shifted into be needed to change the pipeline place before valve, then rotating operation bar (8), block head extrusion expansion just can be realized line pressure shutoff, this block head can attenuate under squeezing action, thus smoothly by the undergauge valve that internal diameter is thinner, again can extrusion expansion be thicker blocks the thicker manifold pressure of internal diameter.
The shape of action bars (8) is the stepped ramp type progressively attenuated, lower end has one section to be hollow, and linked together by internal thread and block head (1), mid portion is through high pressure sealing storehouse (4), upper end is connected by thrust bearing with split-type crossbeam (7), and there is one section of outer silk upper part, can install nut, have one section of cross sectional shape to be regular hexagon topmost, the instruments such as convenient wrench block rotating operation bar.
There are upper and lower two cavitys in high pressure sealing storehouse (4), lower cavity is used for holding block head (1), upper chamber is used for installation high-voltage mechanical sealing assembly (9), be provided with sealing gland (5) topmost, upper chamber is provided with the greasing mouth (13) that is used for noting stop-leak compound, lower cavity is provided with the drain (10) of a band valve, high-pressure mechanical seal assembly (9) is made up of two High-pressure oil sealings and a spring, relies on the stop-leak compound of injection to strengthen sealing property.
Split-type crossbeam (7) has two, every root is provided with three macropores, interstitial hole dress operation bar (8), connecting screw rod (11) is worn in two holes on both sides, three Kong Jun take matched in clearance, crossbeam side is provided with the aperture being used for for a pair assembling, and two split-type crossbeams all cut dimidiation open along centre, and wearing with bolt during use is assembled into together again.The middle circular hole of another root split-type crossbeam and the mid portion diameter of action bars (8) supporting, its main application is after valve dismounting, be placed between valve and underwater flange, secondary fixes action bars (8), plays safety protection function.
Connecting screw rod (11) has two, its one end is fastenedly connected by the earflap on ring-shaped clip (2) and the pipeline (12) before valve to be replaced, the other end is connected with split-type crossbeam (7) by nut (6), thrust bearing is provided with between nut and split-type crossbeam (7), promote split-type crossbeam (7) by twisting nut mobile, thus drive action bars (8) and block head (1) to move up and down.
Ring-shaped clip (2) is arranged according to the outer diameter tube before valve, and subdivision is two semi-rings, there is a connection earflap being with radial bolts hole on the both sides of each semi-ring, encircled on pipeline two and half during use, tighten fixing with bolt, in the middle of each semi-ring, be also provided with the earflap of an axial circular hole of band in addition, connecting screw rod (11) through this axial circular hole, and is firmly connected with earflap by two ends nut.
The utility model device has following characteristics:
1. device all adopts frame for movement, and reliability is high, and security risk is low.
2. seal point is few, and the risk of operation process dielectric leakage is little.
3. whole device is fixed on before valve to be replaced, and under the stop of pipe flange, operation process is comparatively safe.
4. block head alternately supports fixing by two split-type crossbeams all the time, can ensure that block head can not skid off from pipeline.
5. utilize this device replacing valve with pressure, do not need a large amount of emptying petroleum resources of stopping transportation, economic and social benefit is considerable.
6. apparatus structure compact size, uses when being highly suitable for small-bore, operation field narrow space.
7. adopt axial blocking technology, avoid press and open holes get angry welding security risk.
8. take the mode of external stability block head solve block head that valve undergauge causes cannot in inside firm blocking problem.
Accompanying drawing explanation
Fig. 1 is the overall structure schematic diagram of device.
Fig. 2 is the structural representation in high pressure sealing storehouse.
Fig. 3 is the structural representation of split-type crossbeam.
Fig. 4 is the structural representation of ring-shaped clip.
Fig. 5 is the structural representation of action bars.
Marginal data, in figure: 1. block head, 2. ring-shaped clip, 3. ball valve to be replaced, 4. high pressure sealing storehouse, 5. sealing gland, 6. nut, 7. split-type crossbeam, 8. action bars, 9. high-pressure mechanical seal assembly, 10. drain, 11. connecting screw rods, 12. pipelines, 13. greasing mouths.
Detailed description of the invention
After this device produces material object according to the size design of DN50 reducing ball valve, simulated field actual conditions have set up test platform, to boost after successively carrying out on probation, device strength test not with pressure, shutoff successively static test, the step by step test with pressure etc. of inspection, finally reach success replacing valve with pressure under 8.2MPa pressure.From test situation, operation process is simple to operate, safe and reliable, and does not need stopping transportation, emptying, also need not get angry, and duty cycle can complete within 1 hour.Wherein the pressure difference of blocking of this device can reach more than 10MPa under test conditions, and pressure difference of blocking is when 8MPa, observes through the voltage stabilizings of 24 hours, and plugging effect is good, without any leakage and obvious displacement deformation.The detailed description of the invention of device is as follows:
First under the prerequisite of emptying, pressure release, disassemble valve to be replaced not to be connected with main line the flange of side and pipeline, shown in Fig. 1, the device assembled is in place, high pressure sealing storehouse (4) is connected with valve flanges, ring-shaped clip (2) is stuck on the pipeline (12) before valve to be replaced securely, and block head (1) is in the lower cavity of high pressure sealing storehouse.
Close the valve on drain (10), slowly open old valve to be replaced, until valve is in opening completely, the nut (6) on connecting screw rod (11) is twisted with ratchet spanner, promote split-type crossbeam (7) to move forward, thus drive action bars (8) and block head (1) also to move forward, need to change the pipeline place before valve, action bars (8) the lower surface nut (6) that namely stop twist connecting screw rod on concordant with the flange face on pipeline when block head (1) is shifted into.Generally can be judged by the Distance geometry valve site actual size measuring action bars movement whether the two is concordant.
With spanner rotating operation bar (8), block head (1) extrusion expansion is made to carry out shutoff to line pressure.After pressure is blocked, the by-pass valve control opened on drain carries out emptying, pressure release, observe 5 minutes, after confirming thoroughly to have blocked not leakage, take the Flange joint of valve to be replaced and pipeline apart, flange gasket is removed from pipe flange together with valve, install an other split-type crossbeam in this gap simultaneously, guarantee that this split-type crossbeam blocks the boss of action bars (8) lower end, and fasten this split-type crossbeam with the nut for subsequent use on connecting screw rod (11), thus guarantee that action bars and block head are by this split-type cross beam support fixation.
Lay down the split-type crossbeam (7) of device upper end, old flange gasket, old valve and high pressure sealing storehouse (4) are extracted out from action bars together, and then successively new pad, new valve and high pressure sealing storehouse again through on action bars, again split-type crossbeam (7) is installed, support and fix action bars.
Disassemble the split-type crossbeam of device lower end, the Flange joint in fastening good new valve two ends and pipe flange and high pressure sealing storehouse, close the valve on drain (10), with spanner counter-rotation action bars (8), make block head no longer extrusion expansion, thorough releasing is to after the shutoff of pipeline, again with the nut (6) on ratchet spanner in the other direction twisting connecting screw rod, under the effect of in-line pressure, block head, action bars, split-type crossbeam can be drawn back together, after block head enters high pressure sealing storehouse lower cavity completely, close the new ball valve changed.
The by-pass valve control opened on drain (10) carries out emptying, pressure release, removes whole whole device, and be not connected with the main line flange of side and pipeline of new valve is reinstalled reinstatement.
Claims (6)
1. the device of a stopping transportation pressure replacing high compression diameter ball valve, comprise block head (1), action bars (8), high pressure sealing storehouse (4), split-type crossbeam (7), connecting screw rod (11), ring-shaped clip (2), the high pressure sealing storehouse of described device is coupled together with needing the reducing ball valve (3) changed by high pressure flange.
2. change the device of high compression diameter ball valve according to stopping transportation pressure described in claim 1, it is characterized in that:
The shape of described action bars (8) is the stepped ramp type progressively attenuated, lower end has one section to be hollow, and linked together by internal thread and block head (1), mid portion is through high pressure sealing storehouse (4), upper end is connected by thrust bearing with split-type crossbeam (7), and there is one section of outer silk upper part, can install nut, have one section of cross sectional shape to be regular hexagon topmost, the instruments such as convenient wrench block rotating operation bar.
3. change the device of high compression diameter ball valve according to stopping transportation pressure described in claim 1, it is characterized in that:
Described high pressure sealing storehouse (4) has upper and lower two cavitys, lower cavity is used for holding block head (1), upper chamber is used for installation high-voltage mechanical sealing assembly (9), be provided with sealing gland (5) topmost, upper chamber is provided with the greasing mouth (13) that is used for noting stop-leak compound, lower cavity is provided with the drain (10) of a band valve, high-pressure mechanical seal assembly (9) is made up of two High-pressure oil sealings and a spring, relies on the stop-leak compound of injection to strengthen sealing property further.
4. change the device of high compression diameter ball valve according to stopping transportation pressure described in claim 1, it is characterized in that:
Described split-type crossbeam (7) has two, every root is provided with three macropores, interstitial hole dress operation bar (8), connecting screw rod (11) is worn in two holes on both sides, three Kong Jun take matched in clearance, crossbeam side is provided with the aperture being used for for a pair assembling, two split-type crossbeams all cut dimidiation open along centre, wearing with bolt during use is assembled into together again, the middle circular hole of another root split-type crossbeam and the mid portion diameter of action bars (8) supporting, its main application is after valve dismounting, be placed between valve and underwater flange, secondary fixes action bars (8), play safety protection function.
5. change the device of high compression diameter ball valve according to stopping transportation pressure described in claim 1, it is characterized in that:
Described connecting screw rod (11) has two, its one end is fastenedly connected by the earflap on ring-shaped clip (2) and the pipeline (12) before valve to be replaced, the other end is connected with split-type crossbeam (7) by nut (6), thrust bearing is provided with between nut (6) and split-type crossbeam (7), promote split-type crossbeam (7) by twisting nut (6) mobile, thus drive action bars (8) and block head (1) to move up and down.
6. change the device of high compression diameter ball valve according to stopping transportation pressure described in claim 1, it is characterized in that:
Described ring-shaped clip (2) is arranged according to the outer diameter tube before valve, and subdivision is two semi-rings, there is a connection earflap being with radial bolts hole on the both sides of each semi-ring, encircled on pipeline two and half during use, tighten fixing with bolt, in the middle of each semi-ring, be also provided with the earflap of an axial circular hole of band in addition, connecting screw rod (11) through this axial circular hole, and is firmly connected with earflap by two ends nut.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520123737.2U CN204604217U (en) | 2015-03-03 | 2015-03-03 | A kind of stopping transportation pressure changes the device of high compression diameter ball valve |
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| CN201520123737.2U CN204604217U (en) | 2015-03-03 | 2015-03-03 | A kind of stopping transportation pressure changes the device of high compression diameter ball valve |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110529140A (en) * | 2019-08-27 | 2019-12-03 | 中铁工程装备集团有限公司 | One kind can replacement mud ball-cock device with pressure and application method |
| CN112304579A (en) * | 2019-07-25 | 2021-02-02 | 中国石油天然气集团有限公司 | Equipment and method for open hole plugging verification test |
| CN114909543A (en) * | 2021-02-07 | 2022-08-16 | 中国石油天然气股份有限公司 | Pipe thread plugging device |
-
2015
- 2015-03-03 CN CN201520123737.2U patent/CN204604217U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112304579A (en) * | 2019-07-25 | 2021-02-02 | 中国石油天然气集团有限公司 | Equipment and method for open hole plugging verification test |
| CN110529140A (en) * | 2019-08-27 | 2019-12-03 | 中铁工程装备集团有限公司 | One kind can replacement mud ball-cock device with pressure and application method |
| CN110529140B (en) * | 2019-08-27 | 2021-04-23 | 中铁工程装备集团有限公司 | Device capable of replacing mud ball valve under pressure and using method |
| CN114909543A (en) * | 2021-02-07 | 2022-08-16 | 中国石油天然气股份有限公司 | Pipe thread plugging device |
| CN114909543B (en) * | 2021-02-07 | 2024-01-30 | 中国石油天然气股份有限公司 | Pipe thread plugging device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170721 Address after: 430074 Wuhan East Gas Pipeline Project No. 126, Optics Valley Road, East Lake New Technology Development Zone, Hubei, Wuhan Province, 1-5 layers Patentee after: Sinopec East Sichuan Gas Pipeline Co., Ltd. Address before: Jiaxing City, Zhejiang province 314000 Nanhu District Jing Yi Road Huijin Plaza Building 1 (Sichuan East gas) Patentee before: JIAXING EMERGENCY MAINTENANCE CENTER OF SINOPEC GAS SICHUAN TO EAST CHINA GAS TRANSMISSION PIPELINE COMPANY |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200917 Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC CHUANQI DONGSONG NATURAL GAS PIPELINE Co.,Ltd. Address before: 430074 Hubei Optics Valley Wuhan new East Lake Technology Development Zone 126 Optics Valley East Gas Pipeline Project Wuhan regulation center 1-5 layer Patentee before: SINOPEC CHUANQI DONGSONG NATURAL GAS PIPELINE Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: Sichuan East Natural Gas Pipeline Co.,Ltd. Address before: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: SINOPEC CHUANQI DONGSONG NATURAL GAS PIPELINE Co.,Ltd. |