CN201788067U - Pressure test head of hydraulic press - Google Patents
Pressure test head of hydraulic press Download PDFInfo
- Publication number
- CN201788067U CN201788067U CN2010205045152U CN201020504515U CN201788067U CN 201788067 U CN201788067 U CN 201788067U CN 2010205045152 U CN2010205045152 U CN 2010205045152U CN 201020504515 U CN201020504515 U CN 201020504515U CN 201788067 U CN201788067 U CN 201788067U
- Authority
- CN
- China
- Prior art keywords
- seal
- pressure
- seal ring
- spheric seating
- ring
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Gasket Seals (AREA)
Abstract
The utility model relates to a pressure test head of a hydraulic press, which comprises an outer sleeve, a guiding inner sleeve, a spheric seating, a radial seal ring and a seal ring pressurizing water inlet, wherein the spheric seating is provided with the seal ring pressurizing water inlet. The pressure test head is characterized in that seal ring positioning rings are arranged on the spheric seating; seal rings for holes are mounted on the inner circles of the seal ring positioning rings; and the outlet of the seal ring pressurizing water inlet is formed among the seal rings for hole and the radial seal ring. The pressure test head has the advantages that the compression ring-shaped area inside the pressure test head is reduced, so that the pressure of the internal fluid between the guiding inner sleeve and the spheric seating is considerably reduced; and the original end surface sealing structure is changed into a radial sealing structure, so that the seal gap is not influenced by the deformation of the guiding inner sleeve and the spheric seating under hydraulic pressure, therefore, the sealing pressure is ensured and the seal rings are enabled not to be easy to damage, which is benefit for considerably decreasing the amount of matintenance and the operation and maintenance costs of equipment, and ensures the machine-hour utilization ratio and the normal production of the equipment at the same time.
Description
Technical field
The utility model belongs to the welded tube technical field of measurement and test, particularly relates to a kind of water pressure engine pressure text head.
Background technology
In the high-frequency straight seam welded pipe production run, the welded tube that the water that is useful on, coal gas are carried all will carry out the low pressure hydraulic testing, and test pressure is 25～80 kg/cm
2Also must carry out the high pressure hydraulic testing for high strength welded tubes such as the employed oil pipe of oil field, sleeve pipe, gas delivering pipes, test pressure is 80～570 kg/cm
2Therefore hydrostatic testing machine is the visual plant of check welded tube weldquality during welded tube is produced, and wherein pressure text head is one of critical piece of hydrostatic testing machine, also by the critical component of the pipe end of pressure testing sealing.
Present pressure text head structure of the prior art is shown in Fig. 1; It mainly is made up of cover, PY type end side O-ring seal, spheric seating, big gap radial direction seal ring etc. in overcoat, the guiding.At high pressure (test pressure 160～320 kg/cm that carry out tubule footpath welded tube
2) PY type end side O-ring seal often damages during the hydraulic testing, especially the welded tube for φ 219～φ 355 not can carry out UHV (ultra-high voltage) (test pressure 320～690 kg/cm
2) hydraulic testing.For example φ 219 welded tubes are carried out 250 kg/cm
2During the hydraulic testing of pressure, whenever carry out the hydraulic testing of 15～20 root bead pipes and just must change a PY type end side O-ring seal, the time of tearing, change, adorn pressure text head open of changing the once sealing circle needs the plenty of time (about 90 minutes), so utilization factor is very low during the platform of equipment.Thereby increased the operating cost of the maintenance capacity and the equipment of equipment greatly, also seriously influenced the ordinary production of production line simultaneously.
Summary of the invention
The utility model provides a kind of water pressure engine pressure text head for solving the technical matters that exists in the known technology, and it can improve the serviceable life of O-ring seal, reduces the replacing frequency of O-ring seal, improves usage ratio of equipment.
The technical scheme that the utility model is taked for the technical matters that exists in the solution known technology is:
A kind of water pressure engine pressure text head, comprise cover in overcoat, the guiding, spheric seating, radial direction seal ring and O-ring seal pressurization water inlet, spheric seating is provided with O-ring seal pressurization water inlet, it is characterized in that: be provided with the hole O-ring seal between the outer ring surface that puts in inner ring surface on the spheric seating and the guiding, the hole is equipped with locating ring with the side of O-ring seal, and the outlet of O-ring seal pressurization water inlet is between the hole is with O-ring seal and radial direction seal ring.
Advantage and the good effect that the utlity model has are:
After the utility model has adopted above technical scheme, at first be the compression ring area that has reduced pressure text head inside, thereby reduced the internal liquid pressure between interior cover of guiding and the spheric seating significantly, with φ 219 pressure text heads, force value is 250 kgf/cm
2Be example, the external diameter of the compression face of spheric seating is 740mm in the known technology, and internal diameter is 219, suffered fluid pressure 979680kgf(979.6 ton on the inner loop area).The external diameter that improves the back compression face is the external diameter 410mm of radial direction seal ring, and internal diameter is 219, and its internal liquid pressure only is 234911 kgf(234.9 tons), less than 1/4 of pressure in former.Secondly, former end face seal structure is made into radial seal structure, be subjected to the influence of hydraulic pressure distortion in seal clearance is not led like this between cover and the spheric seating, therefore not only guaranteed sealing load but also make O-ring seal not fragile.Simultaneously the unit price of radial direction seal ring is below half of PY type end side O-ring seal, helps reducing significantly the maintenance capacity and the operating maintenance expense of equipment, utilization factor and ordinary production when also having guaranteed the platform of equipment simultaneously.
Description of drawings
Fig. 1 is the structural representation of water pressure engine pressure text head of the prior art;
Fig. 2 is a structural representation of the present utility model.
Among the figure: 1, overcoat; 2, cover in the guiding; 3, PY type end side O-ring seal; 4, spheric seating; 5, radial direction seal ring; 6, supercharging water inlet; 7, O-ring seal pressurization water inlet; 8, hole O-ring seal; 9, O-ring seal locating ring;
100, be subjected to the pressure testing steel pipe.
Embodiment
For further understanding summary of the invention of the present utility model, characteristics and effect, exemplify following examples now, and conjunction with figs. is described in detail as follows:
See also Fig. 2, a kind of water pressure engine pressure text head, comprise cover 2 in overcoat 1, the guiding, spheric seating 4, radial direction seal ring 5 and O-ring seal pressurization water inlet 7, spheric seating 4 is provided with O-ring seal pressurization water inlet 7, be provided with the hole O-ring seal between the outer ring surface in inner ring surface on the spheric seating 4 and the guiding on the cover 2, the hole is equipped with locating ring 9 with the side of O-ring seal, and the outlet of O-ring seal pressurization water inlet 7 is between the hole is with O-ring seal 8 and radial direction seal ring 5.
Although in conjunction with the accompanying drawings preferred embodiment of the present utility model is described above; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; be not restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; not breaking away under the scope situation that the utility model aim and claim protect, can also make a lot of forms, these all belong within the protection domain of the present utility model.
Claims (1)
1. water pressure engine pressure text head, comprise cover in overcoat, the guiding, spheric seating, radial direction seal ring and O-ring seal pressurization water inlet, spheric seating is provided with O-ring seal pressurization water inlet, it is characterized in that: spheric seating is provided with the O-ring seal locating ring, the porose O-ring seal of using is installed on the interior circle of O-ring seal locating ring, and the outlet of O-ring seal pressurization water inlet is between the hole is with O-ring seal and radial direction seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205045152U CN201788067U (en) | 2010-08-25 | 2010-08-25 | Pressure test head of hydraulic press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205045152U CN201788067U (en) | 2010-08-25 | 2010-08-25 | Pressure test head of hydraulic press |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201788067U true CN201788067U (en) | 2011-04-06 |
Family
ID=43820026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205045152U Expired - Fee Related CN201788067U (en) | 2010-08-25 | 2010-08-25 | Pressure test head of hydraulic press |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201788067U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067444A (en) * | 2015-08-04 | 2015-11-18 | 新兴铸管股份有限公司 | Supercharging test apparatus and use method thereof |
| CN105675386A (en) * | 2016-03-09 | 2016-06-15 | 南通永大管业股份有限公司 | Sealed pressurizing device for hydraulic press |
-
2010
- 2010-08-25 CN CN2010205045152U patent/CN201788067U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105067444A (en) * | 2015-08-04 | 2015-11-18 | 新兴铸管股份有限公司 | Supercharging test apparatus and use method thereof |
| CN105067444B (en) * | 2015-08-04 | 2017-07-04 | 新兴铸管股份有限公司 | Pressurization test set and its application method |
| CN105675386A (en) * | 2016-03-09 | 2016-06-15 | 南通永大管业股份有限公司 | Sealed pressurizing device for hydraulic press |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101915647B (en) | End face seal pressure test head device of hydraulic pressure testing machine | |
| CN204284788U (en) | Chain pipe plugging fixture | |
| CN201788067U (en) | Pressure test head of hydraulic press | |
| CN205859420U (en) | High Temperature High Pressure flange under a kind of condition of supercritical water seals structure | |
| CN101620046B (en) | Water press pilot-operated vent valve | |
| CN203031251U (en) | Bolt tensioner | |
| CN201795909U (en) | End face sealing pressure testing head device of hydrostatic test press | |
| CN204525352U (en) | The slim bolt tensioning jack of single-stage | |
| CN201884324U (en) | Pressure-bearing horizontally split pump combined type sealing device | |
| CN201434805Y (en) | Liquid-control air vent valve of hydraulic press | |
| CN203052028U (en) | Self-anchorage type connector of cast tube | |
| CN204054743U (en) | The forcing press twin-stage die-cushion of the two guide post of inner band | |
| CN211344368U (en) | Low pressure valves power oil pipeline | |
| CN202971376U (en) | Oil distributing valve for novel ultra-high pressure radial piston pump | |
| CN203068045U (en) | Curved pipe pressure balance compensator | |
| CN207645758U (en) | A kind of haulage gear | |
| CN203068044U (en) | All-external-pressure balance corrugated compensator | |
| CN205470862U (en) | Industrial boiler collection case hand hole device | |
| CN207777333U (en) | The Portable dismantling type bottom structure of hinged shaft mount type thin-walled hydraulic cylinder | |
| CN202531893U (en) | Top-entry ball valve | |
| CN202266773U (en) | Split rotary joint of multi-spring structure | |
| CN212008083U (en) | Water sealing barrel for volute pressing test of water turbine | |
| CN203442241U (en) | Exhaust valve special for steel pipe water pressure testing machine | |
| CN204253356U (en) | New-type mortar pump liner | |
| CN202370783U (en) | Four-stage cylinder guide mechanism of compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110406 Termination date: 20130825 |