CN208653788U - A kind of novel hydraulic press oil-water balance system - Google Patents
A kind of novel hydraulic press oil-water balance system Download PDFInfo
- Publication number
- CN208653788U CN208653788U CN201821449504.1U CN201821449504U CN208653788U CN 208653788 U CN208653788 U CN 208653788U CN 201821449504 U CN201821449504 U CN 201821449504U CN 208653788 U CN208653788 U CN 208653788U
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- Prior art keywords
- shoring
- oil
- booster
- port
- valve
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 22
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 32
- 239000010959 steel Substances 0.000 claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 239000002828 fuel tank Substances 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000295 fuel oil Substances 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 54
- 238000002474 experimental method Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000010720 hydraulic oil Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model provides a kind of novel hydraulic press oil-water balance system, water-filling mold and vented mould including being respectively arranged at pressure testing steel pipe both ends, the through-hole being connected to pressure testing steel duct is provided in the water-filling mold, the through-hole is externally connected with booster, hydraulic pressure sensor is connected between the booster and through-hole, exhaust valve is provided in the vented mould, shoring is provided on the outside of the vented mould, the piston rod of the shoring is in contact with the outer end face of vented mould, the shoring is connected separately with fuel tank and oil pressure sensor, check valve is connected between the fuel tank and shoring, the junction of the pressure testing steel pipe and water-filling mold and vented mould is provided with sealing ring.Balance system described in the utility model can preferably keep oil-water balance during steel tube pressure-measuring, protect exhaust end sealing ring, improve loading test effect and efficiency.
Description
Technical field
The utility model belongs to steel pipe's production technical field, more particularly, to a kind of novel hydraulic press oil-water balance system.
Background technique
Hydraulic press is a kind of mechanical equipment of steel pipe hydrostatic test, and by steel pipe transmission equipment, water-filling exhaust system, (sealing is ground
Tool, filling valve, exhaust valve), booster, the components composition such as shoring, by water-filling exhaust system toward filling the water in steel pipe, while handle
Air emits in steel pipe, and then valve is closed, and booster is pressurized, and completes steel pipe hydrostatic testing.
For hydrostatic testing machine during pressure testing, the hydraulic pressure in steel pipe can generate thrust to exhaust end with the raising of pressure,
Exhaust end is balanced thrust by hydraulic oil in shoring, guarantees that exhaust end is not drawn back.But hydraulic oil has included air
With the compressibility of itself, exhaust end can retreat a small distance when suppressing, and will cause the sealing ring and steel pipe of exhaust end in this way
Relative motion is carried out, the damage of sealing ring is caused, influences the service life of sealing ring；Simultaneously because sealing ring and the opposite fortune of steel pipe
It will lead to endless hermetically sealed in dynamic process, generate pressure leakage during pressure testing, influence loading test effect and efficiency.
Summary of the invention
In view of this, the utility model is directed to a kind of novel hydraulic press oil-water balance system, it can be preferably in steel pipe
Oil-water balance is kept during pressure testing, protects exhaust end sealing ring, improves loading test effect and efficiency.
In order to achieve the above objectives, the technical solution of the utility model is achieved in that
A kind of novel hydraulic press oil-water balance system, water-filling mold and exhaust including being respectively arranged at pressure testing steel pipe both ends
Mold is provided with the through-hole being connected to pressure testing steel duct in the water-filling mold, and the through-hole is externally connected with booster, described
Be connected with hydraulic pressure sensor between booster and through-hole, be provided with exhaust valve in the vented mould, the vented mould it is outer
Side is provided with shoring, and the piston rod of the shoring is in contact with the outer end face of vented mould, and the shoring is separately connected
Have fuel tank and oil pressure sensor, be connected with check valve between the fuel tank and shoring, the pressure testing steel pipe and water-filling mold and
The junction of vented mould is provided with sealing ring.
Further, the booster is connected with booster stop valve and booster servo valve in turn, and the booster is cut
Disconnected valve includes port A, port B, port C and port D, and the port A is connected to the rod chamber of booster, the port B with
The rodless cavity of booster is connected to；The booster servo valve includes oil inlet a, oil inlet b, oil return opening c, oil return opening d；The end
Mouth C is connected to oil inlet a, and the port D is connected to oil return opening c；The booster stop valve by booster servo valve into
Hydraulic fluid port a, oil inlet b are connected to inflow pipeline；The booster stop valve is connected by oil return opening c, the oil return opening d of booster servo valve
Logical oil returning tube.
Further, the shoring is connected with shoring stop valve and shoring servo valve in turn, and the shoring is cut
Disconnected valve includes port E, port F, port G, and the port E is connected to shoring, the shoring servo valve include oil inlet e,
Oil inlet f, oil return opening g, oil return opening h；The port F is connected to oil inlet e, and the port G is connected to oil return opening g；The branch
It supports cylinder stop valve and inflow pipeline is connected to by oil inlet e, the oil inlet f of shoring servo valve；The shoring stop valve passes through
Oil return opening g, the oil return opening h of shoring servo valve are connected to oil returning tube.
Further, the pipeline between the oil pressure sensor communications ports E and shoring.
Further, the booster servo valve and shoring servo valve are controlled by HNC servo controller.
Compared with the existing technology, novel hydraulic press oil-water balance system described in the utility model has the advantage that
Novel hydraulic press oil-water balance system described in the utility model is to increase hydraulic circuit control all the way in shoring
System, including shoring servo valve, shoring stop valve, oil pressure sensor, booster side hydraulic circuit be applicable in booster stop valve,
Booster servo valve replace proportional pressure control valve and inserted valve combination, two servo-fluid pressure valves by Rexroth HNC SERVO CONTROL
Device control guarantees hydraulic pressure and oil pressure to the thrust of shoring according to the pressure ratio of variation the amendment hydraulic pressure and oil pressure of pressure testing steel pipe
Balance, keeps the sealing ring of exhaust end and pressure testing steel pipe opposing stationary, reduces the abrasion to sealing ring, and that improves sealing ring uses the longevity
Order and improve the efficiency and success rate of pressurization.
Detailed description of the invention
The attached drawing for constituting a part of the utility model is used to provide a further understanding of the present invention, this is practical new
The illustrative embodiments and their description of type are not constituteed improper limits to the present invention for explaining the utility model.?
In attached drawing:
Fig. 1 is the structural schematic diagram of novel hydraulic press oil-water balance system described in the utility model embodiment.
Description of symbols:
1, water-filling mold；2, pressure testing steel pipe；3, vented mould；4, exhaust valve；5, hydraulic pressure sensor；6, booster；7, increase
Depressor stop valve；8, booster servo valve；9, shoring；10, sealing ring；11, check valve；12, fuel tank；13, oil pressure sensor；
14, shoring stop valve；15, shoring servo valve.
Specific embodiment
It should be noted that in the absence of conflict, the feature in the embodiments of the present invention and embodiment can
To be combined with each other.
In the description of the present invention, it should be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of describing the present invention and simplifying the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitations of the present invention.In addition, term " first ", " second " etc. are used for description purposes only, and should not be understood as indicating
Or it implies relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " etc. are defined as a result,
Feature can explicitly or implicitly include one or more of the features.It is in the description of the present invention, unless another
It is described, the meaning of " plurality " is two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, on being understood by concrete condition
State the concrete meaning of term in the present invention.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
A kind of novel hydraulic press oil-water balance system as shown in Figure 1, including being respectively arranged at 2 both ends of pressure testing steel pipe
Water-filling mold 1 and vented mould 3 are provided with the through-hole being connected to inside pressure testing steel pipe 2 in water-filling mold 1, and through-hole is externally connected with
Booster 6 is connected with hydraulic pressure sensor 5 between booster 6 and through-hole, exhaust valve 4, vented mould 3 are provided in vented mould 3
Outside be provided with shoring 9, the piston rod of shoring 9 is in contact with the outer end face of vented mould 3, and shoring 9 is separately connected
There are fuel tank 12 and oil pressure sensor 13, check valve 11 is connected between fuel tank 12 and shoring 9, oil pressure sensor 13 is connected to end
Pipeline between mouth E and shoring 9.The junction of pressure testing steel pipe 2 and water-filling mold 1 and vented mould 3 is provided with sealing ring
10。
Booster 6 is connected with 6 servo valve of 6 stop valve of booster and booster in turn, and 6 stop valve of booster includes port
A, port B, port C and port D, port A are connected to the rod chamber of booster 6, and port B is connected to the rodless cavity of booster 6；Increase
6 servo valve of depressor includes oil inlet a, oil inlet b, oil return opening c, oil return opening d；Port C is connected to oil inlet a, port D and oil return
Mouth c connection；6 stop valve of booster is connected to inflow pipeline by oil inlet a, the oil inlet b of 6 servo valve of booster；Booster 6 is cut
Disconnected valve is connected to oil returning tube by oil return opening c, the oil return opening d of 6 servo valve of booster.
Shoring 9 is connected with 9 servo valve of 9 stop valve of shoring and shoring in turn, 9 stop valve of shoring include port E,
Port F, port G, port E are connected to shoring 9, and 9 servo valve of shoring includes oil inlet e, oil inlet f, oil return opening g, oil return
Mouth h；Port F is connected to oil inlet e, and the port G is connected to oil return opening g；9 stop valve of shoring passes through 9 servo valve of shoring
Oil inlet e, oil inlet f be connected to inflow pipeline；9 stop valve of shoring passes through oil return opening g, the oil return opening h of 9 servo valve of shoring
It is connected to oil returning tube.
Specifically, for the hydraulic circuit of booster 6 and shoring 9 mainly by stop valve and servo valve control, stop valve is main
It plays a protective role, prevents the leakage of hydraulic circuit；Two servo valves by Rexroth HNC controller (not shown) into
The control of row pressure.
The working process of the utility model is as follows: after filling water inside pressure testing steel pipe 2, booster 6 is by pressurized cylinder servo valve control
System is advanced, and in high pressure water injection pressure testing steel pipe 2, hydraulic pressure can follow raising, and 5 real-time monitoring hydraulic pressure pressure of hydraulic pressure sensor reaches
To after requiring pressure, 6 stop valve of booster cutting, 6 servo valve of booster is closed, and carries out pressure maintaining, and pressure maintaining is completed, and booster 6 is cut
Disconnected valve is opened, and 6 servo valve control booster 6 of booster retreats, and carries out pressure release, completes whole experiment process.During the experiment,
Check valve 11 after shoring 9 is closed, and 9 servo valve of shoring is opened, and adjusts oil pressure in shoring 9, oil according to the variation of hydraulic pressure
Pressure pressure is by 13 real-time monitoring of oil pressure sensor, and after completing experiment, the check valve 11 after shoring 9 is opened, and shoring 9 retreats.
During the experiment, it is ensured that thrust-balancing F1=F2 (the wherein F1=of 9 pairs of exhaust grinding tools of hydraulic pressure and shoring
P1*s1；P1 is steel inner pipe water pressure pressure, and s1 is steel duct area；F2=P2*s2；P2 is oil pressure pressure, and s2 is shoring 9
Area), so that vented mould 3 and pressure testing steel pipe 2 is not generated relative motion, the sealing ring 10 and phase of pressure testing steel pipe 2 and exhaust end
To static, sealing ring 10 will not be damaged, pressure leakage will not be thus generated.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (5)
1. a kind of novel hydraulic press oil-water balance system, it is characterised in that: including being respectively arranged at filling for pressure testing steel pipe (2) both ends
Water mold (1) and vented mould (3), be provided in the water-filling mold (1) and pressure testing steel pipe (2) inside the through-hole that is connected to, institute
It states through-hole to be externally connected with booster (6), be connected with hydraulic pressure sensor (5) between the booster (6) and through-hole, the exhaust mould
It is provided with exhaust valve (4), is provided with shoring (9) on the outside of the vented mould (3), the work of the shoring (9) in tool (3)
Stopper rod is in contact with the outer end face of vented mould (3), and the shoring (9) is connected separately with fuel tank (12) and oil pressure sensor
(13), it is connected with check valve (11) between the fuel tank (12) and shoring (9), the pressure testing steel pipe (2) and water-filling mold (1)
The junction of vented mould (3) is provided with sealing ring (10).
2. novel hydraulic press oil-water balance system according to claim 1, it is characterised in that: the booster (6) is successively
Be connected with booster (6) stop valve and booster (6) servo valve, booster (6) stop valve include port A, port B,
Port C and port D, the port A are connected to the rod chamber of booster (6), and the rodless cavity of the port B and booster (6) connects
It is logical；Booster (6) servo valve includes oil inlet a, oil inlet b, oil return opening c, oil return opening d；The port C and oil inlet a
Connection, the port D are connected to oil return opening c；Booster (6) stop valve by the oil inlet a of booster (6) servo valve,
Oil inlet b is connected to inflow pipeline；Booster (6) stop valve is connected by the oil return opening c, oil return opening d of booster (6) servo valve
Logical oil returning tube.
3. novel hydraulic press oil-water balance system according to claim 2, it is characterised in that: the shoring (9) is successively
It is connected with shoring (9) stop valve and shoring (9) servo valve, shoring (9) stop valve includes port E, port F, end
Mouthful G, the port E are connected to shoring (9), shoring (9) servo valve include oil inlet e, oil inlet f, oil return opening g,
Oil return opening h；The port F is connected to oil inlet e, and the port G is connected to oil return opening g；Shoring (9) stop valve passes through
The oil inlet e, oil inlet f of shoring (9) servo valve are connected to inflow pipeline；Shoring (9) stop valve passes through shoring (9)
Oil return opening g, the oil return opening h of servo valve are connected to oil returning tube.
4. novel hydraulic press oil-water balance system according to claim 3, it is characterised in that: the oil pressure sensor (13)
Pipeline between communications ports E and shoring (9).
5. novel hydraulic press oil-water balance system according to claim 3, it is characterised in that: booster (6) servo
Valve and shoring (9) servo valve are controlled by HNC servo controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821449504.1U CN208653788U (en) | 2018-09-05 | 2018-09-05 | A kind of novel hydraulic press oil-water balance system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821449504.1U CN208653788U (en) | 2018-09-05 | 2018-09-05 | A kind of novel hydraulic press oil-water balance system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208653788U true CN208653788U (en) | 2019-03-26 |
Family
ID=65792689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821449504.1U Expired - Fee Related CN208653788U (en) | 2018-09-05 | 2018-09-05 | A kind of novel hydraulic press oil-water balance system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208653788U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749433A (en) * | 2019-11-12 | 2020-02-04 | 江苏一重数控机床有限公司 | A pressure follow-up device for an expansion joint pressure test platform and its control method |
-
2018
- 2018-09-05 CN CN201821449504.1U patent/CN208653788U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110749433A (en) * | 2019-11-12 | 2020-02-04 | 江苏一重数控机床有限公司 | A pressure follow-up device for an expansion joint pressure test platform and its control method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190326 Termination date: 20200905 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |