CN202770609U - Steel pipe hydrostatic testing machine - Google Patents
Steel pipe hydrostatic testing machine Download PDFInfo
- Publication number
- CN202770609U CN202770609U CN 201220370222 CN201220370222U CN202770609U CN 202770609 U CN202770609 U CN 202770609U CN 201220370222 CN201220370222 CN 201220370222 CN 201220370222 U CN201220370222 U CN 201220370222U CN 202770609 U CN202770609 U CN 202770609U
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- China
- Prior art keywords
- piston
- steel pipe
- cylinder body
- diameter end
- screw mandrel
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- Expired - Fee Related
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Abstract
The utility model provides a steel pipe hydrostatic testing machine, comprising a mounting base and a mobile dolly. The mounting base and the mobile dolly are respectively provided with a sealing device; each sealing device comprises a support; the support is fixedly arranged on the mounting base or the mobile dolly; the support is provided with a screw; the screw is threadingly connected with the support; the inner side terminal of the screw is connected with a cylinder body; a piston is arranged in the cylinder body; the piston comprises a large diameter terminal and a small diameter terminal; the piston is sealingly matched with the cylinder body; the piston can slide in the cylinder body; the piston is provided with a water inlet aperture; the cylinder body is respectively provided with a water-filling aperture and a booster pump connection aperture; the water-filling aperture and the booster pump connection aperture are communicated with the water inlet aperture; and the small diameter terminal of the piston arranged on the mounting base is opposite to the small diameter terminal of the piston arranged on the mobile dolly. According to the steel pipe hydrostatic testing machine, the sealing of the end portions of the steel pipe are effectively guaranteed.
Description
Technical field
The utility model relates to a kind of testing equipment, particularly relates to a kind of hydrostatic testing machine that steel pipe is carried out the hydraulic testing.
Background technology
Extraordinary gapless stainless steel tube product is mainly used on the war products such as satellite, aircraft, submarine, therefore tube quality is had very strict requirement.The gapless stainless steel tube product must detect through eddy current test and ultrasonic inspection before dispatching from the factory, and need provide survey report after qualified, can obtain customer's approval.But the user of some war products not only requires by above-mentioned two detections, and also requirement must detect by the hydraulic testing, requires the steel pipe of different tube diameters and wall thickness must reach user-defined hydraulic testing index, can obtain user's approval.Gapless stainless steel tube is carried out the hydraulic testing generally adopts pipeline hydrostatic test machine to carry out, when carrying out the hydraulic testing, the steel pipe that needs at first will detect is fixed, then water-filling in the steel pipe, steel pipe is full of behind the water steel pipe sealing, then be pressurized to the pressure of testing requirements by supercharge pump to the water in the steel pipe, observe steel pipe and whether leak, illustrate then that as not leaking steel pipe meets hydraulic testing test request.
Existing pipeline hydrostatic test machine mainly comprises two steel tube end part packoffs, two steel tube end part packoffs are installed in respectively on a holder and the dolly, the steel tube end part packoff comprises a screw mandrel, one end of screw mandrel is provided with handle, the other end of screw mandrel is provided with sealing block, screw mandrel is supported on the bearing, and bearing is fixed on holder or the dolly, screw mandrel and bearing threaded engagement.When carrying out the hydraulic testing, by rotating two steel tube end part packoff upper screw rods, the two ends that the sealing block of two steel tube end part packoffs is inwardly pushed steel pipe respectively seal, so just can water-filling pressurization in steel pipe, carry out pressure test.
The hydrostatic testing machine of existing this structure is that the end that the mode by artificial rotary screw promotes the sealing block steel pipe seals, when the hydraulic pressure pressure in the steel pipe is higher, the pressure that sealing block bears can be very large, just the artificial rotary screw of simple dependence comes to provide pressure to be difficult to satisfy the seal request of steel pipe to sealing block, therefore the situation that steel tube end part leaks often occurs in process of the test, the steel pipe hydrostatic testing that makes can't normally carry out.
The utility model content
It is a kind of simple in structure and can guarantee the steel pipe hydrostatic tester of the sealed at both ends effect of steel pipe that the shortcoming of prior art in view of the above, the purpose of this utility model are to provide.
Reach for achieving the above object other relevant purposes, the utility model provides a kind of steel pipe hydrostatic tester, comprise a holder and a travelling car, described holder, be equipped with a packoff on the travelling car, described packoff comprises a support, described support is fixed on described holder or the travelling car, described support is provided with a screw mandrel, described screw mandrel is threaded with described support, the medial extremity of described screw mandrel is connected with a cylinder body, be provided with piston in the described cylinder body, described piston comprises a bigger diameter end and a miner diameter end, described piston cooperates with described cylinder body seal, described piston can slide in described cylinder body, and described piston is provided with an inlet opening, is respectively equipped with a filling port and a supercharge pump connecting hole on the described cylinder body, described filling port, the supercharge pump connecting hole is communicated with described inlet opening, and the miner diameter end that is positioned at the piston on the described holder is relative with the miner diameter end position of piston on being positioned at described travelling car.
Preferably, described miner diameter end is provided with sealing gasket, and described sealing gasket is provided with the axially extending bore that is communicated with described inlet opening.
Preferably, also be provided with clamping clip on the described packoff, described clamping clip is fixed on described holder or the travelling car.
Preferably, the outboard end of described screw mandrel is provided with handle.
Preferably, described filling port is connected with a charging pipe, and described charging pipe is provided with the low pressure water valve.
Preferably, described cylinder body is provided with a connecting seat, and described screw mandrel is connected with described cylinder body by described Connection Block.
As mentioned above, steel pipe hydrostatic tester of the present utility model has following beneficial effect: this steel pipe hydrostatic tester in use, the steel pipe that will test is arranged between two pistons, rotary screw makes the piston miner diameter end of two packoffs inwardly stretch out respectively the two ends of blocking steel pipe, then by filling port water-filling in the steel pipe, after being full of water in the steel pipe, be forced into again the pressure of testing requirements to the water in the steel pipe by supercharge pump, because the two ends of piston are communicated with by the inlet opening, so the pressure at piston two ends is identical, again since the sectional area of piston bigger diameter end greater than the sectional area of miner diameter end, therefore the inside pressure of piston bigger diameter end is greater than the outside pressure of piston miner diameter end, piston integral body will be subject to inside pressure and compress the end of steel pipe like this, thereby can effectively guarantee the sealing of steel tube end part.
Description of drawings
Fig. 1 is the one-piece construction synoptic diagram of the utility model embodiment.
Fig. 2 is the cut-open view of packoff among the utility model embodiment.
Fig. 3 is the cut-open view that piston cooperates with steel pipe sealing among the utility model embodiment.
The element numbers explanation
1 ground
2 holders
3 travelling cars
4 packoffs
5 steel pipes
41 supports
42 screw mandrels
43 handles
44 cylinder bodies
45 Connection Blocks
46 pistons
47 sealing gaskets
48 inlet openings
49 clamping clips
50 filling ports
Embodiment
Below by particular specific embodiment embodiment of the present utility model is described, person skilled in the art scholar can understand other advantages of the present utility model and effect easily by the disclosed content of this instructions.
See also Fig. 1 to Fig. 3.Notice, the appended graphic structure that illustrates of this instructions, ratio, size etc., equal contents in order to cooperate instructions to disclose only, understand and reading for person skilled in the art scholar, be not to limit the enforceable qualifications of the utility model, so technical essential meaning of tool not, the adjustment of the modification of any structure, the change of proportionate relationship or size, do not affecting under the effect that the utility model can produce and the purpose that can reach, all should still drop on the technology contents that the utility model discloses and get in the scope that can contain.Simultaneously, quote in this instructions as " on ", D score, " left side ", " right side ", " centre " reach the term of " " etc., also only for ease of understanding of narrating, but not in order to limit the enforceable scope of the utility model, the change of its relativeness or adjustment, under without essence change technology contents, when also being considered as the enforceable category of the utility model.
As shown in Figure 1, the utility model provides a kind of steel pipe hydrostatic tester, and this steel pipe hydrostatic tester comprises a holder 2 and a travelling car 3, and holder 2 is fixed on the ground 1, and travelling car 3 can move around at ground 1.Be equipped with a packoff 4 on holder 2, the travelling car 3, packoff 4 is used for the two ends of the steel pipe 5 that carries out the hydraulic pressure test test are sealed.The position of travelling car 3 can be regulated according to the length of steel pipe 5.
As shown in Figure 2, packoff 4 comprises a support 41, and support 41 is fixed on holder 2 or the travelling car 3.Support 41 is provided with a screw mandrel 42, and screw mandrel 42 is threaded with support 41.The outboard end of screw mandrel 42 is connected with one handle 43, and the medial extremity of screw mandrel 42 is provided with a cylinder body 44, and cylinder body 44 is provided with a connecting seat 45, and screw mandrel 42 is connected with cylinder body 44 by Connection Block 45, by rotary screw 42 cylinder body 44 is moved around in the horizontal direction.Be provided with a piston 46 in the cylinder body 44, piston 46 comprises a bigger diameter end and a miner diameter end, and piston 46 is joined sealing with cylinder body 44 and closed, and piston 46 can be in cylinder body 44 interior slips.
Piston 46 is provided with an inlet opening 48, and inlet opening 48 is respectively equipped with a filling port 50 and a supercharge pump connecting hole (not shown) axially running through piston 46 cylinder bodies 44, and filling port 50, supercharge pump connecting hole are communicated with inlet opening 48.Filling port 50 is connected with a charging pipe, and charging pipe is provided with the low pressure water valve, opens the low pressure water valve and can pass through filling port 50, inlet opening 48 to steel pipe 5 interior water-fillings.The supercharge pump connecting hole is connected with a supercharge pump, can increase hydraulic pressure in the steel pipe by supercharge pump.The miner diameter end of piston 46 is provided with sealing gasket 47, and sealing gasket 47 is provided with the axis through bore that is communicated with inlet opening 48.The miner diameter end that is positioned at the piston on the holder 2 is relative with the miner diameter end position of piston on being positioned at travelling car 3.Also be provided with clamping clip 49 on the packoff 4, clamping clip 49 is fixed on holder 2 or the travelling car 3, and clamping clip 49 is used for clamping steel pipe 5 at the trial, and steel pipe 5 is supported.
This steel pipe hydrostatic tester in use, at first steel pipe is fixed on steel pipe 5 between two pistons 46 by clamping clip 49, and make the piston miner diameter end of two packoffs 4 inwardly stretch out respectively the two ends of blocking steel pipe by handle 43 rotary screws 42, then open the low pressure water valve and pass through filling port 50, inlet opening 48 to steel pipe 5 interior water-fillings, after in steel pipe 5, being full of water, be forced into the pressure of testing requirements by supercharge pump to the water in the steel pipe again, so just can carry out the hydraulic testing to steel pipe.
In the process of carrying out the hydraulic testing, because the two ends of piston 46 are communicated with by inlet opening 48, so the pressure at piston two ends is identical, again since the sectional area of piston bigger diameter end greater than the sectional area of miner diameter end, therefore the inside pressure of piston bigger diameter end is greater than the outside pressure of piston miner diameter end, as shown in Figure 3: establish supercharge pump top hole pressure P, piston rod large head external diameter D
1, interstitial hole d
1, pressure testing pipe diameter d
2, then:
∵ pressure P equates everywhere
The stressed F in ∴ piston rod left side
1=P * 1/4 π (D
1 2-d
1 2) ┈ ┈ ┈ ┈ ┈ ┈ ┈ ┈ ┈-1.
Piston rod right atrial pressure F
2=P * 1/4 π (d
2 2-d
1 2) ┈ ┈ ┈ ┈ ┈ ┈ ┈ ┈ ┈-2.
By 1. and 2. getting: F
1/ F
2=(D
1 2-d
1 2)/(d
2 2-d
1 2)
∵D
1＞d
2
∴ F
1/ F
2＞1 namely: F
1＞F
2
∴ can seal up steel tube end part
By above-mentioned inference as can be known, piston 46 integral body can be subject to inside pressure, therefore the mode by artificial rotary screw of need not again provides pressure just can make piston with the end compression of steel pipe to piston and makes its sealing, thereby can effectively guarantee the sealing of steel tube end part, in this steel pipe hydrostatic tester, the fundamental purpose of rotary screw is in order to position for steel pipe 5, and operating personnel need not to come rotary screw with larger power, so operating personnel's labour intensity is less.The utility model has effectively overcome various shortcoming of the prior art and the tool high industrial utilization in sum.
Above-described embodiment is illustrative principle of the present utility model and effect thereof only, but not is used for restriction the utility model.Any person skilled in the art scholar all can be under spirit of the present utility model and category, and above-described embodiment is modified or changed.Therefore, have in the technical field under such as and know that usually the knowledgeable modifies or changes not breaking away from all equivalences of finishing under spirit that the utility model discloses and the technological thought, must be contained by claim of the present utility model.
Claims (6)
1. steel pipe hydrostatic tester, comprise a holder and a travelling car, described holder, be equipped with a packoff on the travelling car, described packoff comprises a support, described support is fixed on described holder or the travelling car, described support is provided with a screw mandrel, described screw mandrel is threaded with described support, it is characterized in that, the medial extremity of described screw mandrel is connected with a cylinder body, be provided with piston in the described cylinder body, described piston comprises a bigger diameter end and a miner diameter end, and described piston cooperates with described cylinder body seal, and described piston can slide in described cylinder body, described piston is provided with an inlet opening, is respectively equipped with on the described cylinder body
One filling port and a supercharge pump connecting hole, described filling port, supercharge pump connecting hole are communicated with described inlet opening, and the miner diameter end that is positioned at the piston on the described holder is relative with the miner diameter end position of piston on being positioned at described travelling car.
2. steel pipe hydrostatic tester according to claim 1, it is characterized in that: described miner diameter end is provided with sealing gasket, and described sealing gasket is provided with the axially extending bore that is communicated with described inlet opening.
3. steel pipe hydrostatic tester according to claim 1, it is characterized in that: also be provided with clamping clip on the described packoff, described clamping clip is fixed on described holder or the travelling car.
4. steel pipe hydrostatic tester according to claim 1, it is characterized in that: the outboard end of described screw mandrel is provided with handle.
5. steel pipe hydrostatic tester according to claim 1, it is characterized in that: described filling port is connected with a charging pipe, and described charging pipe is provided with the low pressure water valve.
6. steel pipe hydrostatic tester according to claim 1, it is characterized in that: described cylinder body is provided with a connecting seat, and described screw mandrel is connected with described cylinder body by described Connection Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370222 CN202770609U (en) | 2012-07-27 | 2012-07-27 | Steel pipe hydrostatic testing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220370222 CN202770609U (en) | 2012-07-27 | 2012-07-27 | Steel pipe hydrostatic testing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202770609U true CN202770609U (en) | 2013-03-06 |
Family
ID=47777173
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220370222 Expired - Fee Related CN202770609U (en) | 2012-07-27 | 2012-07-27 | Steel pipe hydrostatic testing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202770609U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760033A (en) * | 2014-01-27 | 2014-04-30 | 欧阳杰 | Testing device for water pressure of pipe material and application method thereof |
| CN104181045A (en) * | 2014-08-11 | 2014-12-03 | 常熟市无缝钢管有限公司 | Steel pipe water pressure detection device with automatic steel pipe clamping function |
| CN104344952A (en) * | 2014-11-18 | 2015-02-11 | 武汉船用机械有限责任公司 | Horizontal pressure testing method for shafting copper bush of controllable-pitch propeller |
| CN105115670A (en) * | 2015-09-22 | 2015-12-02 | 浙江众立不锈钢管股份有限公司 | Steel pipe hydraulic pressure test system |
| CN106442156A (en) * | 2016-12-05 | 2017-02-22 | 无锡市创恒机械有限公司 | Water pressure testing device |
| CN107144473A (en) * | 2017-07-03 | 2017-09-08 | 宁波友宁钢管有限公司 | Pipe hydraulic pressure detection device |
| CN109211561A (en) * | 2018-11-21 | 2019-01-15 | 霍山嘉远智能制造有限公司 | A kind of thin-walled lid panel hydraulic pressure test fixture |
| CN110873629A (en) * | 2020-01-16 | 2020-03-10 | 潍坊东方钢管有限公司 | Pipeline external pressure detection device |
| CN114235311A (en) * | 2021-12-20 | 2022-03-25 | 中车大连机车车辆有限公司 | Pipeline hydrostatic test method suitable for groove on one side and flange on the other side |
-
2012
- 2012-07-27 CN CN 201220370222 patent/CN202770609U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103760033A (en) * | 2014-01-27 | 2014-04-30 | 欧阳杰 | Testing device for water pressure of pipe material and application method thereof |
| CN104181045A (en) * | 2014-08-11 | 2014-12-03 | 常熟市无缝钢管有限公司 | Steel pipe water pressure detection device with automatic steel pipe clamping function |
| CN104344952A (en) * | 2014-11-18 | 2015-02-11 | 武汉船用机械有限责任公司 | Horizontal pressure testing method for shafting copper bush of controllable-pitch propeller |
| CN105115670A (en) * | 2015-09-22 | 2015-12-02 | 浙江众立不锈钢管股份有限公司 | Steel pipe hydraulic pressure test system |
| CN106442156A (en) * | 2016-12-05 | 2017-02-22 | 无锡市创恒机械有限公司 | Water pressure testing device |
| CN107144473A (en) * | 2017-07-03 | 2017-09-08 | 宁波友宁钢管有限公司 | Pipe hydraulic pressure detection device |
| CN109211561A (en) * | 2018-11-21 | 2019-01-15 | 霍山嘉远智能制造有限公司 | A kind of thin-walled lid panel hydraulic pressure test fixture |
| CN109211561B (en) * | 2018-11-21 | 2024-02-23 | 霍山嘉远智能制造有限公司 | Thin-wall cover plate hydrostatic test tool |
| CN110873629A (en) * | 2020-01-16 | 2020-03-10 | 潍坊东方钢管有限公司 | Pipeline external pressure detection device |
| CN110873629B (en) * | 2020-01-16 | 2020-05-22 | 潍坊东方钢管有限公司 | Pipeline external pressure detection device |
| CN114235311A (en) * | 2021-12-20 | 2022-03-25 | 中车大连机车车辆有限公司 | Pipeline hydrostatic test method suitable for groove on one side and flange on the other side |
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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 |
Granted publication date: 20130306 Termination date: 20180727 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |