CN101430252A - Pressure test device - Google Patents
Pressure test device Download PDFInfo
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- CN101430252A CN101430252A CNA200810220100XA CN200810220100A CN101430252A CN 101430252 A CN101430252 A CN 101430252A CN A200810220100X A CNA200810220100X A CN A200810220100XA CN 200810220100 A CN200810220100 A CN 200810220100A CN 101430252 A CN101430252 A CN 101430252A
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- pressure
- hydraulic pump
- pipeline
- pneumatically powered
- pressure testing
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Abstract
The invention discloses a pressure test device. An electric hydraulic pump and a pneumatic hydraulic pump set formed by serially connected more than one pneumatic hydraulic pump are arranged in parallel between an oil tank of the pressure device and a feed pipeline. When testing pressure, the electric hydraulic pump with larger displacement is firstly started to work and can rapidly press liquid in the oil tank into a pressure test chamber to cause the pressure of the liquid in the pressure test chamber to rise to a certain pressure value at a fast speed; and then the electric hydraulic pump is stopped, and the pneumatic hydraulic pump set is started, the pneumatic hydraulic pump set discharges the liquid at high pressure, can press the liquid with the higher pressure into the pressure test chamber and further pressurizes the liquid in the pressure test chamber so as to further increase the pressure value of the liquid in the pressure test chamber. The pressure test device has the advantage of the large displacement of an electric pressure test bench as well as the characteristic of high pressure of a pneumatic pressure test bench, which enhances the applicability of the device while improving the pressure test efficiency.
Description
Technical field
The present invention relates to a kind of pressure testing device that is used for pressure part is carried out high pressure or UHV (ultra-high voltage) pressure detection.
Technical background
Pressure restraining elements such as the preventer stack in the well control equipment that the petroleum engineering well head uses, throttle manifold, casinghead, pipeline member, valve member need under high pressure be worked, and before it comes into operation, need carry out high-potting, can work under high pressure conditions to guarantee it.Existing pressure testing device mainly contains two kinds.A kind of is pneumatic pressure testing table, it pressurizes to the pressure testing chamber by pneumatically powered hydraulic pump, pressure test pressure can reach very high, but discharge capacity is little, the common maximum of its flow can only reach about 201/min, and the whole process time that boosts is long during its pressure testing, and the well head pressure testing will expend the plenty of time, sometimes even reach more than ten day, it has influenced work efficiency greatly.A kind of is electronic pressure testing table, pumps into highly pressurised liquid by electric hydraulic pump in the pressure testing chamber, carries out pressure testing, and its electric hydaulic pumping rate is big, the rate of rise of pressure chamber is fast, the efficient height.Yet the pressure of its discharged liquid of electric hydraulic pump is less relatively, and the pressure in pressure testing chamber is limited during pressure testing, can't finish for the pressure-bearing pressure testing of some UHV (ultra-high voltage), uses limited.
Summary of the invention
The present invention is intended to provide the pressure testing device that a kind of discharge capacity is big, pressure is high, with efficient that improves pressure testing device and the applicability that strengthens pressure testing device.
Pressure testing device of the present invention, comprise the fuel tank, the electric hydraulic pump that are used to store pressure liquid, the imbibition pipeline connection fuel tank of its electric hydraulic pump, the fluid pipeline of electric hydraulic pump is connected to the pressure testing chamber by the feed flow pipeline, on the feed flow pipeline high-pressure stop valve is installed, pneumatically powered hydraulic pump group with the electric hydaulic parallel connection of pumps is installed between its fuel tank and feed flow pipeline, the pneumatically powered hydraulic pump group is in series by one or more pneumatically powered hydraulic pumps, the imbibition pipeline connection fuel tank of pneumatically powered hydraulic pump group, the fluid pipeline connection feed flow pipeline of pneumatically powered hydraulic pump group.
Pressure testing device of the present invention, between its fuel tank and feed flow pipeline, the electric hydraulic pump and the pneumatically powered hydraulic pump group that are in parallel are arranged, during pressure testing, start the bigger electric hydaulic pump work of discharge capacity earlier, it can be pressed into the liquid in the fuel tank in the pressure testing chamber more quickly, makes the fluid pressure in the pressure testing chamber rise to certain force value rapidly; Then, electric hydraulic pump stops, the Pneumatic hydraulic pump startup, by regulating the pressurized air that drives it, the pressure of pneumatically powered hydraulic pump discharged liquid can be very high, its general more liquid of high pressure is pressed in the pressure testing chamber, to the further pressurization of pressure testing intracavity liquid, pressure testing intracavity liquid force value is further improved.The big advantage of the existing electronic pressure testing table discharge capacity of its pressure testing device has the high characteristics of pneumatic pressure testing table pressure test pressure again, when improving the pressure testing test efficiency, has also strengthened the applicability of device.In addition, the pressure of pneumatically powered hydraulic pump discharged liquid with as the proportional relation of compressed-air actuated pressure of power, by regulating compressed-air actuated pressure, can control the pressure of pneumatically powered hydraulic pump output liquid easily, thereby realize control the pressure in the pressure testing chamber.
Description of drawings
Fig. 1 is a kind of structural representation of pressure testing device;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 is a kind of structural representation of pressure testing device;
Fig. 4 is a kind of structural representation of pressure testing device;
Fig. 5 is the vertical view of Fig. 4.
Embodiment
On the feed flow pipeline behind the high-pressure stop valve 5 the release pipeline 6 that is communicated with fuel tank 1 can be installed, pressure-release valve 7 be installed, on the release pipeline 6 by the break-make of pressure-release valve pilot piping.After pressure testing finishes, open pressure-release valve 7, the highly pressurised liquid in the pressure testing chamber can flow in the fuel tank 1, thereby reduces the hydraulic pressure in the chamber of exerting pressure, and with the liquids recovery that extrudes.
Pressure testing device need carry out pressure testing to well-control equipment in the well head working-yard sometimes, in its pressure testing process, can sneak into impurity such as the grains of sand in the pressure liquid, the pressure liquid after the pressure testing, as be recovered to the normal use that can pollute fuel tank in the fuel tank and influence fuel tank.In order to prevent that above-mentioned situation from taking place, another release branch road 8 to extraneous release can be installed on the feed flow pipeline behind the high-pressure stop valve 5 again, the release branch road is connected drainpipe 9, pressure-release valve 10 is installed on it, as Fig. 4, Fig. 5, the branch road of two releases is arranged on the feed flow pipeline, one is communicated with fuel tank, article one, directly lead to drainpipe, stop valve all is installed on two branch roads as pressure-release valve.In the pressure testing process, whole pipeline is comparatively clean, in the time of can not polluting pressure liquid, pressure liquid after pressure testing finishes, can open with branch road that fuel tank is communicated with on pressure-release valve, make pressure liquid be recycled to fuel tank, repeatedly use.Work as on-site voltage-measuring, examination process pipeline and pressure liquid is easy when contaminated, and pressure testing is opened the pressure-release valve that is communicated with discharging tube after finishing, and pressure liquid is discharged by discharging tube.
At the scene during pressure testing; because pressure liquid pollutes easily; can not reclaim use; usually can use cheap water during pressure testing as pressure liquid; when water is lower than zero degrees celsius in temperature; may take place for fear of this situation because of the water sharp freezing makes conduit failure, on the imbibition pipeline of electric hydraulic pump and pneumatically powered hydraulic pump drainage arrangement is installed all.Cross when low when temperature, the water in electric hydraulic pump and the Pneumatic hydraulic pump line road can be discharged by drainage arrangement, thus the protection pipeline.Described drainage arrangement can be the ajutage that opened and closed by valve control etc.
The drain pipe of electric hydraulic pump 20 is equipped with the bypass line 11 that communicates with fuel tank 1, surplus valve 12 is installed, as Fig. 3, Fig. 4, Fig. 5 on the bypass line 11.When the pressure of electric hydraulic pump discharging tube is excessive; surplus valve can be opened automatically, and it can prevent that electric hydraulic pump from damaging because of hypertonia, plays a protective role to electric hydraulic pump; when the out-of-work controller of control electric hydraulic pump damaged, its protective effect was particularly important especially.
Claims (6)
1, a kind of pressure testing device, comprise the fuel tank (1) that is used to store pressure liquid, electric hydraulic pump (20), the imbibition pipeline (21) of its electric hydraulic pump is communicated with fuel tank (1), the fluid pipeline (22) of electric hydraulic pump is connected to the pressure testing chamber by feed flow pipeline (4), high-pressure stop valve (5) is installed on the feed flow pipeline, it is characterized in that: between fuel tank (1) and feed flow pipeline (4) the pneumatically powered hydraulic pump group in parallel with electric hydraulic pump (20) is installed, the pneumatically powered hydraulic pump group is in series by an above pneumatically powered hydraulic pump, the imbibition pipeline (31) of pneumatically powered hydraulic pump group is communicated with fuel tank (1), and the fluid pipeline (32) of pneumatically powered hydraulic pump group is communicated with feed flow pipeline (4).
2, pressure testing device according to claim 1 is characterized in that: the pneumatically powered hydraulic pump group is in series by elementary pneumatically powered hydraulic pump (30a) and secondary pneumatically powered hydraulic pump (30b), and the ratio of compression of secondary pneumatically powered hydraulic pump is more elementary wants high.
3, pressure testing device according to claim 1, it is characterized in that: the release pipeline (6) that is communicated with fuel tank (1) can be installed on the feed flow pipeline behind the high-pressure stop valve (5), release pipeline (6) is gone up pressure-release valve (7) is installed, by the break-make of pressure-release valve pilot piping.
4, pressure testing device according to claim 1 is characterized in that: the fluid pipeline (22) of electric hydraulic pump (20) is equipped with the bypass line (11) that communicates with fuel tank (1), and surplus valve (12) is installed on the bypass line.
5, according to claim 1 or 3 described pressure testing devices, it is characterized in that: also be provided with a release branch road (8) on the feed flow pipeline (4), the release branch road is connected to drainpipe (9), and the pressure-release valve (10) of controller break-make is installed on it.
6, pressure testing device according to claim 1 is characterized in that: on the imbibition pipeline of electric hydraulic pump and pneumatically powered hydraulic pump drainage arrangement is installed all.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810220100XA CN101430252A (en) | 2008-12-17 | 2008-12-17 | Pressure test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200810220100XA CN101430252A (en) | 2008-12-17 | 2008-12-17 | Pressure test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101430252A true CN101430252A (en) | 2009-05-13 |
Family
ID=40645774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200810220100XA Pending CN101430252A (en) | 2008-12-17 | 2008-12-17 | Pressure test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101430252A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614253A (en) * | 2015-03-05 | 2015-05-13 | 黑龙江省中能控制工程股份有限公司 | Heat exchange unit pressure test equipment and pressure test method |
| CN111120242A (en) * | 2020-02-14 | 2020-05-08 | 德州学院 | Hydraulic control linkage pressurization injection device |
-
2008
- 2008-12-17 CN CNA200810220100XA patent/CN101430252A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104614253A (en) * | 2015-03-05 | 2015-05-13 | 黑龙江省中能控制工程股份有限公司 | Heat exchange unit pressure test equipment and pressure test method |
| CN111120242A (en) * | 2020-02-14 | 2020-05-08 | 德州学院 | Hydraulic control linkage pressurization injection device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20090513 |