CN102996548A - Pressure reduction device for steel pipe injection water pressure test - Google Patents
Pressure reduction device for steel pipe injection water pressure test Download PDFInfo
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- CN102996548A CN102996548A CN2012104272148A CN201210427214A CN102996548A CN 102996548 A CN102996548 A CN 102996548A CN 2012104272148 A CN2012104272148 A CN 2012104272148A CN 201210427214 A CN201210427214 A CN 201210427214A CN 102996548 A CN102996548 A CN 102996548A
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- oil
- spool
- end surface
- valve body
- branch road
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Abstract
The invention discloses a pressure reduction device for steel pipe injection water pressure test. The pressure reduction device comprises a valve body and a valve core, wherein the valve core is arranged in the center in the valve body; an oil inlet cavity is formed in the center of the valve core; a bottom oil discharging opening is formed in a valve body cavity on the outer side of the valve core; a bottom oil outlet cavity is formed in the bottom of the valve body on the same side as the bottom discharging oil and consists of two oil paths, namely an upper end face oil outlet cavity branch and a lower end face oil outlet cavity branch are respectively formed in the valve core upper end face and the valve core lower end face sequentially; and a pressure adjustment branch is connected between the bottom oil outlet cavity and the bottom oil discharging opening. The pressure reduction device has the advantages that the conventional pressure balance of an oil discharging part can be kept; during failure, a pipeline can be immediately replaced or maintained; furthermore, the oil outlet cavity and the oil discharging opening are synchronously arranged at the bottom of the valve, and the pipeline is arranged between the oil outlet cavity and the oil discharging opening; and therefore, the pressure between the oil outlet cavity and the oil discharging opening is convenient to adjust, and bottom detection and oil discharging are facilitated.
Description
Technical field
The present invention relates to the hydraulics field, relate in particular to a kind of decompressor that injects hydraulic pressure test for steel pipe.
Background technique
At the hydraulic equipment of rubber forming machine to the steel pipe water pressure test, must guarantee oil-water balance state in whole hydrostatic test process, must guarantee that in this process Simultaneous Pressure changes, otherwise can occur steel pipe is damaged by pressure compressive strain and do not reach the purpose of pressure testing.General operation is that at oil pressure mouth dress proportional pressure-reducing valve or proportional pressure control valve, pressure transducer gathers the pressure data of water pump mouth at water pump mouth dress pressure transducer, pass to PLC, PLC sends instructions to Proportional valve again, produces an oil pressure that is slightly larger than hydraulic pressure, keeps this oil-water balance.When structure of relief pressure valve is set, usually all be that drain tap and the outer end that goes out oil pocket are opened in respectively on the valve body of spool both sides, detecting or during fuel-displaced process, detection then needs to be positioned at the valve body both sides and tests out respectively oil pocket and drain tap, fuel-displaced then the needs also arranges respectively twice to guarantee fuel-displaced process in both sides, thereby this structure exerts a certain influence to oil extraction efficient and pressure measurement speed; Simultaneously, the relatively poor deficiency of pressure harmony between oil pocket and the drain tap is not easy to comprehensive detection.
Summary of the invention
The purpose of this invention is to provide and a kind ofly have a plurality of draining branch roads and go out the oil pocket branch road, be conducive to keep the oil-water balance requirement, be convenient to adjust the pressure between oil pocket and the drain tap and detect in the same way and fuel-displaced be used for the decompressor that steel pipe injects hydraulic pressure test, to solve many deficiencies of prior art.
Purpose of the present invention is come specific implementation by the following technical programs:
A kind of decompressor that injects hydraulic pressure test for steel pipe, comprise valve body and spool, the valve inner center position arranges spool, be positioned at the center spool position and offer an oil suction chamber, the valve chamber that is positioned at the spool outside offers the bottom surface drain tap, offer the bottom surface with the valve body of drain tap the same side, bottom surface bottom and go out oil pocket and this bottom surface and go out oil pocket and formed by two sections oil circuits, namely be positioned at spool upper-end surface, spool lower end surface and offer respectively successively one section upper-end surface and go out oil pocket branch road, lower end surface and go out oil pocket branch road and this two branch roads and all go out oil pocket with the bottom surface and be communicated with; Described bottom surface goes out to be connected one section pressure between oil pocket and the bottom surface drain tap regulates branch road.
Described bottom surface drain tap is comprised of two sections oil circuits, namely is positioned at spool upper-end surface, spool lower end surface and offers respectively successively one section upper-end surface draining branch road, one section lower end surface draining branch road; Be positioned at valve body wherein the inner chamber of an end one control mouthful is set, described pressure is regulated in the branch road a movable plug is set.
The beneficial effect that injects the decompressor of hydraulic pressure test for steel pipe of the present invention is: by two draining branch roads of being drawn by spool upper-end surface, spool lower end surface partly are set in drain tap, simultaneously, arrange two in fuel-displaced cavity segment and go out the oil pocket branch road by what drew spool upper-end surface, spool lower end surface, be conducive to keep the original pressure balance of oil bleeding part, when a pipeline goes wrong, be convenient to change timely or safeguard; Simultaneously, will go out oil pocket and drain tap and be arranged at simultaneously between valve bottom position and the two and be connected with pipeline, and be convenient to adjust the pressure between oil pocket and the drain tap and carry out floor detection and fuel-displaced, in the process that keeps oil-water balance to test, convenient operation.
Description of drawings
The below is described in further detail the present invention with embodiment with reference to the accompanying drawings.
Fig. 1 is the described structural drawing that injects the decompressor of hydraulic pressure test for steel pipe of the embodiment of the invention.
Among the figure: 1, valve body; 2, bottom surface drain tap; 3, the bottom surface goes out oil pocket; 4, oil suction chamber; 5, control mouth; 6, spool; 7, upper-end surface draining branch road; 8, lower end surface draining branch road; 9, the upper-end surface goes out the oil pocket branch road; 10, the lower end surface goes out the oil pocket branch road; 11, movable plug; 12, pressure is regulated branch road.
Embodiment
As shown in Figure 1, the described decompressor that injects hydraulic pressure test for steel pipe of the embodiment of the invention, comprise valve body 1 and spool 6, described valve body 1 inside center position arranges spool 6, be positioned at valve body 1 wherein the inner chamber of an end one section control mouthfuls 5 is set, be positioned at spool 6 center portions and be provided with an oil suction chamber 4, valve body 1 chamber that is positioned at spool 6 outsides is offered bottom surface drain tap 2, offer the bottom surface with valve body 1 bottom of bottom surface drain tap 2 the same sides and go out oil pocket 3 and this bottom surface and go out oil pocket 3 and formed by two sections oil circuits, namely be positioned at spool 6 upper-end surfaces, spool 6 lower end surfaces are offered respectively successively one section upper-end surface and are gone out oil pocket branch road 9, the lower end surface goes out oil pocket branch road 10 and this two branch roads and all goes out oil pocket 3 with the bottom surface and be communicated with; Simultaneously, described bottom surface drain tap 2 is comprised of two sections oil circuits, namely be positioned at spool 6 upper-end surfaces, spool 6 lower end surfaces are offered respectively one section upper-end surface draining branch road 7, one section lower end surface draining branch road 8 successively, in the process that keeps the oil-water balance experiment, can guarantee that oil circuit flows to complete direction according to hydrostatic test control mouth and carries out, be conducive to keep the original pressure balance of fuel-displaced part; In addition, described bottom surface goes out to be connected between oil pocket 3 and the bottom surface drain tap 2 one section pressure to be regulated branch road 12 and this pressure and regulates that branch road 12 is interior to arrange a movable plug 11, and the inspector can detect pressure condition to carry out oil extraction, convenient operation in this section.
Claims (4)
1. one kind is used for the decompressor that steel pipe injects hydraulic pressure test, comprise valve body (1) and spool (6), valve body (1) inside center position arranges spool (6), it is characterized in that: be positioned at spool (6) center portion and offer an oil suction chamber (4), valve body (1) chamber that is positioned at spool (6) outside is offered bottom surface drain tap (2), offer the bottom surface with the valve body (1) of bottom surface drain tap (2) the same side bottom and go out oil pocket (3) and this bottom surface and go out oil pocket (3) and formed by two sections oil circuits, namely be positioned at spool (6) upper-end surface, spool (6) lower end surface is offered respectively successively one section upper-end surface and is gone out oil pocket branch road (9), the lower end surface goes out oil pocket branch road (10) and this two branch roads and all goes out oil pocket (3) with the bottom surface and be communicated with; Described bottom surface goes out to be connected one section pressure between oil pocket (3) and the bottom surface drain tap (2) regulates branch road (12).
2. a kind of decompressor that injects hydraulic pressure test for steel pipe as claimed in claim 1, it is characterized in that: described bottom surface drain tap (2) is comprised of two sections oil circuits, namely is positioned at spool (6) upper-end surface, spool (6) lower end surface is offered respectively one section upper-end surface draining branch road (7), one section lower end surface draining branch road (8) successively.
3. as claimed in claim 1ly a kind ofly inject the decompressor of hydraulic pressure test for steel pipe, it is characterized in that: be positioned at valve body (1) wherein the inner chamber of an end one control mouthful (5) is set.
4. a kind of decompressor for steel pipe injection hydraulic pressure test as claimed in claim 1 is characterized in that: in the described pressure adjusting branch road (12) a movable plug (11) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104272148A CN102996548A (en) | 2012-10-31 | 2012-10-31 | Pressure reduction device for steel pipe injection water pressure test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012104272148A CN102996548A (en) | 2012-10-31 | 2012-10-31 | Pressure reduction device for steel pipe injection water pressure test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102996548A true CN102996548A (en) | 2013-03-27 |
Family
ID=47925527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012104272148A Pending CN102996548A (en) | 2012-10-31 | 2012-10-31 | Pressure reduction device for steel pipe injection water pressure test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102996548A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785849A (en) * | 1985-06-12 | 1988-11-22 | Daikin Industries Ltd. | Pressure reducing valve assembly |
| CN201078364Y (en) * | 2007-08-15 | 2008-06-25 | 新疆石油管理局钻井工艺研究院 | Electromagnetic valve |
| CN201110412Y (en) * | 2007-11-29 | 2008-09-03 | 段会强 | Fluid pressure reducing valve |
| CN202381433U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | External-control differential reducing valve for hydraulic device |
| CN202381435U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | Shunting and pressure reducing valve |
| CN202851497U (en) * | 2012-10-31 | 2013-04-03 | 无锡鸿声铝业有限公司 | Reliever used for pressure test of injected water in steel tube |
-
2012
- 2012-10-31 CN CN2012104272148A patent/CN102996548A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4785849A (en) * | 1985-06-12 | 1988-11-22 | Daikin Industries Ltd. | Pressure reducing valve assembly |
| CN201078364Y (en) * | 2007-08-15 | 2008-06-25 | 新疆石油管理局钻井工艺研究院 | Electromagnetic valve |
| CN201110412Y (en) * | 2007-11-29 | 2008-09-03 | 段会强 | Fluid pressure reducing valve |
| CN202381433U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | External-control differential reducing valve for hydraulic device |
| CN202381435U (en) * | 2011-04-06 | 2012-08-15 | 上海朝田实业有限公司 | Shunting and pressure reducing valve |
| CN202851497U (en) * | 2012-10-31 | 2013-04-03 | 无锡鸿声铝业有限公司 | Reliever used for pressure test of injected water in steel tube |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20130327 |