CN103573732A - Ultrahigh-pressure large-flow-rate supercharged hydraulically controlled stop valve and application thereof - Google Patents
Ultrahigh-pressure large-flow-rate supercharged hydraulically controlled stop valve and application thereof Download PDFInfo
- Publication number
- CN103573732A CN103573732A CN201310407065.3A CN201310407065A CN103573732A CN 103573732 A CN103573732 A CN 103573732A CN 201310407065 A CN201310407065 A CN 201310407065A CN 103573732 A CN103573732 A CN 103573732A
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- pressure valve
- pressure
- ultrahigh
- 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.)
- Granted
Links
Images
Landscapes
- Lift Valve (AREA)
Abstract
The invention relates to an ultrahigh-pressure large-flow-rate supercharged hydraulically controlled stop valve and the application thereof. The stop valve comprises a valve base, a low-pressure valve body and an ultrahigh pressure valve body; the valve base is hermetically connected with one end of the low-pressure valve body, and the other end of the low-pressure valve body is connected with the ultrahigh pressure valve body; a piston penetrates through the valve base and the low-pressure valve body, and divides a cavity defined by the valve base and the low-pressure valve body into an oil chamber I and an oil chamber II; the ultrahigh pressure valve body is internally provided with a piston rod which is connected with the piston; the valve base is provided with an oil inlet; the low-pressure valve body is provided with an oil return opening; the front end of the ultrahigh pressure valve body is provided with an oil chamber III; the front part of the ultrahigh pressure valve body is provided with a system oil outlet; one side of the oil chamber III is provided with an unloading port. The invention discloses the ultrahigh-pressure large-flow-rate supercharged stop valve which can bear pressure of 125 MPa; a hydraulic system is used for outputting pressure and the flow so as to control the ultrahigh-pressure large-flow-rate supercharged stop valve, so that the opening and closing of the stop valve are realized, the pressure can be maintained, the requirements of large flow rate and ultrahigh pressure can be met.
Description
Technical field
The present invention relates to a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve and application thereof, belong to the technical field of the control unit that blocks liquid stream.
Background technique
Stop valve is in order to block the control unit of liquid stream in hydraulic system, the variation of valve seat port is and flap stroke relation in direct ratio, belong to forced seal formula valve, be applied to industrial technology field, in the hydraulic systems such as water flooding pump station, pressurized gas power system, pipeline-cleaning pressure testing machine, compression test under super high platform.
Existing stop valve type comprises hand stop valve, Electric Actuated Stop Valves and Flange Gate Valves.Hand stop valve mostly adopts the mode of hand thread mechanical adjustment valve port opening, common feature is manpower rotation hand wheel, control closing and opening of stop valve, adjusting pressure is generally below 16MPa, and latus rectum is below 500mm, in long-term use, find, the shortcoming of hand stop valve maximum be open and close moment greatly, effort, opening and closing time is longer, adjusting function is poor, power consumption damages greatly and very easily the parts such as handwheel, bull stick, causes valve malfunctioning.Electric Actuated Stop Valves and Flange Gate Valves are comprised of electric actuator or pneumatic actuator and stop valve two-part, and Electric Actuated Stop Valves is applicable to nominal pressure 6～16MPa, are only permitted medium one-way flow, have directivity during installation, and during long-time running, sealing reliability is not strong.Flange Gate Valves is mainly used to connect or block the medium in pipeline, and latus rectum can reach 600mm, and pressure-bearing reaches 20MPa, but is not suitable for adjusting rate-of flow.External similar products heavy-load type Pneumatic valve working pressure reaches 100MPa, but restriction diameter is all below 7/16 inch (11mm), and pressure more high calibre is less.Liquid is by producing throttling action, and it is a kind of irreversible energy changing process that throttling is controlled, and has larger energy loss, is unfavorable for the efficient utilization of system, simultaneously expensive.
At present domestic the studied high pressure valve mainly for employing manual switch valve modulation switch mode, lacks the design higher than the automatically controlled of 15Mpa and hydraulic control ultra-high pressure high flow stop valve to pressure.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve.
The present invention also provides the method for work of above-mentioned ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve.
Technological scheme of the present invention is as follows:
A formula fluid-controlled cut-off valve, comprises valve seat, low pressure valve body and ultrahigh pressure valve body, and one end of described valve seat and described low pressure valve body is tightly connected, and the other end of described low pressure valve body is connected with described ultrahigh pressure valve body; In described valve seat, low pressure valve body, connect and be provided with piston, described piston is divided into I oil pocket and II oil pocket by the inner chamber of valve seat and low pressure valve body composition, in described ultrahigh pressure valve body, be provided with the piston rod being connected with described piston, on described valve seat, be provided with filler opening, on described low pressure valve body, be provided with return opening, front end at described ultrahigh pressure valve body is provided with III oil pocket, is provided with system oil outlet in the front portion of described ultrahigh pressure valve body; A side at described III oil pocket is provided with unloading port; The advantage of design is herein, as shown in Figure 4, and the impact that off-load causes to reduce ultrahigh pressure through unloading port of ultrahigh pressure fluid;
At described piston, near one end of filler opening, being provided with restriction, is taper type at the front end of described piston rod, at the front end of described piston rod, also by double-screw bolt, the first nut, is fixedly installed conical seal ring.As shown in Figure 3, adopt the mode of variable throttling area to cushion.Stop valve piston is in buffering course, and the flow area of its restriction (gap), changes automatically with stroke, makes the compensator or trimmer pressure in I oil pocket keep evenly or be certain rule changing, and obtains satisfied cushioning effect.
Preferred according to the present invention, described conical seal ring is beryllium bronze conical seal ring.Described beryllium bronze is a kind of containing beryllium copper base alloy (Be0.2～2.75%wt%), is the widest a kind of of purposes in all beryllium alloys, and its consumption of has surpassed 70% of beryllium total quantity consumed in the world today.Beryllium bronze is precipitation hardenable alloy, and solid solution aging has very high strength, hardness, limit of elasticity and fatigue limit after processing, and elastic hysteresis is little, and has that anti-corrosion (beraloy is anti-corrosion speed in seawater: (1.1-1.4) * 10-2mm/.Corrosion depth: (10.9-13.8) * 10-3mm/.) after corrosion, beraloy intensity, specific elongation are all unchanged, therefore can keep in seawater more than 40 years, beallon is the irreplaceable material of submarine cable repeater tectosome.In sulfuric acid medium: beryllium bronze (room temperature) year corrosion depth in the sulfuric acid that is less than 80% concentration is 0.0012-0.1175mm, and it is fast a little that concentration is greater than 80% corrosion.
Ultrahigh pressure movable sealing structure of the present invention adopts shuttle sealing.The present invention slots and puts into Sealing etc. and reach sealing effect on piston.Sealing material is selected beryllium bronze, adopts the sealing means of cylinder bush structure, rely on the viscous flow of fluid at lining two ends generation pressure reduction, lining to be held tightly on axle, makes sealing effect reach 700MPa.
Preferred according to the present invention, between described valve seat and low pressure valve body, by being set, an O RunddichtringO is connected with an O RunddichtringO retaining ring sealing.In the present invention, adopt the sealability of O RunddichtringO can reach 25Mpa, be used in conjunction with sealability with O RunddichtringO back-up ring and reach 30Mpa.While considering piston rod returning buffering, can make the instantaneous increase of I oil pocket pressure, therefore select O RunddichtringO and O RunddichtringO back-up ring to be used in combination.
Preferred according to the present invention, between described piston rod and ultrahigh pressure valve body, by being set, the 2nd O RunddichtringO is connected with the 2nd O RunddichtringO retaining ring sealing.The present invention is when low pressure valve filler opening stops logical oil, piston rod retreats, the fluid of high-pressure high-flow exports outflow by piston rod 11 and the gap of ultrahigh pressure valve body 8 by system oil, but high-voltage oil liquid can flow into II oil pocket by the gap of piston rod and ultrahigh pressure valve body inwall; Meanwhile, when backward stroke of the piston arrives terminal, III chamber oil liquid pressure is very little, and when low pressure valve return opening continues fuel feeding, fluid may flow back in III oil pocket, so the 2nd O RunddichtringO and the 2nd O RunddichtringO gear need to be set on ultrahigh pressure valve body piston rod.
Preferred according to the present invention, between described piston and piston rod, by being set, the 3rd O RunddichtringO is connected with the 3rd O RunddichtringO retaining ring sealing.
Preferred according to the present invention, between described piston and described low pressure valve body, be provided with guide support ring, on the both sides of described guide support ring, be provided with y-type seal ring, described piston and described low pressure valve body are tightly connected.Because piston size is larger, need guide support ring guide support.Y-type seal ring is widely used in reciprocating dynamic seal device, and its working life is higher than O RunddichtringO.The applicable working pressure of y-type seal ring reaches 40MPa, and sealability is reliable, and surface friction drag is little, and steadily, operating temperature is-30～80 ℃ in motion.I oil pocket and II oil pocket are all mesolows, therefore select y-type seal ring two way sealed.
Preferred according to the present invention, one end of valve seat and described low pressure valve body is tightly connected by hexagon socket cap head screw and the second spring washer.As shown in Figure 1, be to guarantee assembly piston rod and coaxality at the bottom of valve, simple in structure, be convenient to dismounting, adopt flange connection.
Preferred according to the present invention, the other end of described low pressure valve body is sealed and is connected by tapered thread with described ultrahigh pressure valve body.
Preferred according to the present invention, the surface roughness Ra=0.2～0.4 μ m of described low pressure valve body and ultrahigh pressure valve body; Described low pressure valve body and ultrahigh pressure valve body internal diameter roundness tolerance are chosen by 9 class precisions; Described low pressure valve body and ultrahigh pressure valve body end face squareness tolerance are chosen by 7 class precisions; Described tapered thread is tightly connected and adopts the metric thread of 6 class precisions; In the internal surface plating of low pressure valve body and ultrahigh pressure valve body, take the chromium layer of thickness as 30～40 μ m.Honing or polishing after plating, can prevent corrosion and improve the life-span.The internal and external threads of cone seal pipe thread coordinates closely, has the sealability that non-taper thread does not have, and linkage structure is compact simultaneously.Screw-thread fit application sealer guarantees good sealability.
Preferred according to the present invention, to modified to hardness 229～285HB after described piston rod processing.
Preferred according to the present invention, rear modified after hardness 229～285HB to piston rod processing, then pass through high frequency hardening, hardness reaches 45～55HRC; Roundness tolerance value is chosen by 9 class precisions; End face squareness tolerance value is chosen by 7 class precisions; On piston rod, screw thread is processed according to 6 class precisions; Piston rod surface chromium plating, thickness of coating 0.05mm, plates thick polishing.
Preferred according to the present invention, the cross-sectional diameter of described low pressure valve body is 5 times of ultrahigh pressure valve body cross-sectional diameter.This designs a kind of ultra-high pressure high flow supercharging formula stop valve, guarantees that low-pressure cavity diameter is 5 times of hyperbaric chamber, is to make hyperbaric chamber bear 125Mpa pressure, and design Large Diameter Pipeline valve port meets large flow needs.According to stop valve performance simulation: establish low pressure valve body end code name 1, ultrahigh pressure valve body end code name 2.I oil pocket cylinder diameter is D
1, piston lifting surface area is S
1, stressed is F
1, pressure is P
1; III oil pocket cylinder diameter is D
2, piston rod lifting surface area is S
2, stressed is F
2, pressure is P
2.According to force balance principle, piston rod two ends are stressed equates that it is 5 times of ultrahigh pressure valve body diameter that design should meet low pressure valve diameter.
Preferred according to the present invention, the material of described valve seat, low pressure valve body, piston and piston rod is steel No. 45, heat treatment temperature is 740～760 ℃, holding time 4～6h, with the cooling rate of 50～100 ℃/h, with stove, be down to temperature≤600 ℃, the air cooling of coming out of the stove, hardness≤197HBS before processing, hardness≤156HBS after processing.Due to valve seat, low pressure valve body, piston and piston rod, to bear pressure less, but need certain shock resistance.No. 45 steel are conventional middle modified structural steel of carbon, there is higher intensity and good machinability, after suitable heat treatment, can obtain certain toughness, plasticity and wear resistance, material source is convenient, so at the bottom of valve, low pressure valve body, piston and piston rod adopt No. 45 steel.
Preferred according to the present invention, the material of described ultrahigh pressure valve body is 40Cr alloyed steel, quenching with Subsequent tempering, and 850 ℃ ± 10 ℃ of quenching temperatures, oil cooling is modified, and hardness is between HRC32-36.Because ultrahigh pressure valve body need bear the ultrahigh pressure of 125Mpa, therefore very high to the requirement of strength of ultrahigh pressure valve body, very sensitive to material breach, after the quenching with Subsequent tempering of 40Cr alloyed steel, there is good comprehensive mechanical property, good low-temperature impact toughness and low notch sensitivity, therefore, the ultrahigh pressure valve body of stop valve adopts 40Cr alloyed steel.
Preferred according to the present invention, described valve seat end face and axis verticality tolerance value are chosen by 7 class precisions; Pilot hole surface roughness Ra=1.25 μ m in valve seat.
As an application for above-mentioned ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve, comprise the steps:
Starting electrical machinery driven gear pump is to system fuel feeding, three position four-way directional control valve electromagnet 1YA energising, electromagnetic valve core is in left position, enter work, fluid process Pilot operated check valve is to ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve oil inlet P, promotion piston moves, and the beryllium bronze seal ring on piston rod is fitted tightly on the valve body conical surface.Electromagnet 1YA power-off, electromagnetic valve core is in meta, and main valve plug two ends are obstructed pressure oil all, and under spring action, main valve plug is in meta, and ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve filler opening, oil return inlet T are closed.The high pressure oil of welding system oil circuit is blocked by ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve, produces ultrahigh pressure, and hydraulic pipe line is carried out to ultrahigh pressure pressure testing and explosion;
If the super high pressure oil that system produces directly, by the off-load of piston rod gap, causes great impact to check-valve piece, therefore, need by the pre-off-load of unloading port as shown in Figure 4.As shown in Figure 5, heavily loaded normally closed gas control one-way valve 37 can bear the pressure of 160Mpa, controls the switch of unloading port by the normally closed gas control one-way valve 37 of heavy duty, and super high pressure oil pressure energy after the pre-off-load of unloading port drops to 30Mpa;
The electromagnet 2YA energising of three position four-way directional control valve, electromagnetic valve core is in right position, enter work, fluid is through ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve oil return inlet T fuel feeding, Pilot operated check valve is in closed condition, piston rod is had to certain buffer capacity, when the oil liquid pressure entering when oil return inlet T reaches the cracking pressure of Pilot operated check valve, Pilot operated check valve is opened, piston rod retreats, system fluid flows out through the system oil outlet in the large gap of piston rod and ultrahigh pressure valve body inwall, reaches the object of fluid high flux flushing.
The invention has the advantages that:
The present invention, on the basis of the shortcoming of the existing stop valve of labor, has designed a kind of supercharging type fluid-controlled cut-off valve that overcomes above-mentioned shortcoming and can realize ultra-high pressure high flow.Under ultrahigh pressure, by pressure medium, Sealing and valve seat are fitted tightly and realize effective sealing.Existing technical barrier problem comprises that unreasonable material failure, the sealability deficiency of causing of structural design causes that leakage rate is excessive, buffering off-load is impacted excessive.
The ultra-high pressure high flow supercharging formula stop valve that pressure-bearing pressure of the present invention is 125MPa, its key be the structure of design spool, valve seat meeting intensity, the gentle strategically important place of large flow is asked, and suitable sealing configuration and material meet seal request.The design of ultra-high pressure high flow supercharging formula stop valve mainly contains four aspects: supercharging type structural design, design of Sealing Structure, buffer structure design, threshold switch are controlled design.Ultra-high pressure high flow supercharging formula stop valve is mainly comprised of valve body, threshold switch control section, by hydraulic system delivery pressure and flow, ultra-high pressure high flow supercharging formula stop valve is controlled, realize stop valve switch and pressurize, meet large flow and ultrahigh pressure requirement.
Accompanying drawing explanation
Fig. 1 ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve erection drawing;
The structural drawing of Fig. 2 beryllium bronze seal ring;
The structural drawing of Fig. 3 piston rod buffering restriction;
The structural drawing of Fig. 4 unloading port;
The schematic diagram of Fig. 5 ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve on-off control system;
Fig. 6 is the low pressure valve body three-dimensional models figure that utilizes solidworks Software on Drawing;
Fig. 7 is for utilizing ansys finite element software to low pressure valve volume mesh division figure;
Fig. 8 is for utilizing ansys finite element analysis software low pressure valve body stress distribution map;
Fig. 9 is for utilizing ansys finite element analysis software low pressure valve displacement body distribution map;
Figure 10 is the excess high pressure valves body three-dimensional models figure that utilizes solidworks Software on Drawing;
Figure 11 is for utilizing ansys finite element software to divide excess high pressure valves volume mesh;
Figure 12 is for utilizing ansys finite element analysis software excess high pressure valves body stress to distribute;
Figure 13 is for utilizing ansys finite element analysis software excess high pressure valves displacement body to distribute.
In Fig. 1-5,1-valve seat; 2-low pressure valve body; 3-the one O RunddichtringO; 9-the 2nd O RunddichtringO; 16-the 3rd O RunddichtringO; 4-the one O RunddichtringO back-up ring; 10-the 2nd O RunddichtringO back-up ring; 17-the 3rd O RunddichtringO back-up ring; 5-piston; 6-guide support ring; 7-Y RunddichtringO; 8-ultrahigh pressure valve body; 11-piston rod; 12-beryllium bronze seal ring; 13-double-screw bolt; 14-the first nut, 19-the second nut; 20-the 3rd nut; 15-the first spring washer; 18-hexagon socket cap head screw; 19-the second spring washer; 21-the 3rd spring washer; 22-fuel-economizing mouth; 23-filler opening; 24-return opening; 25-tapered thread; 26-system oil outlet 27-unloading port; I is I oil pocket; II is II oil pocket; III is III oil pocket; 31-motor; 32-gear pump; 33-three position four-way directional control valve; 34-Pilot operated check valve; 35-stop valve of the present invention; 36-relief valve; The normally closed gas control one-way valve of 37-heavy duty; 38-welding system oil circuit; 39-takes back oil circuit.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in detail, but is not limited to this.
As Figure 1-5.
A formula fluid-controlled cut-off valve, comprises valve seat 1, low pressure valve body 2 and ultrahigh pressure valve body 8, and described valve seat 1 is tightly connected with one end of described low pressure valve body 2, and the other end of described low pressure valve body 1 is connected with described ultrahigh pressure valve body 8; In described valve seat 1, the interior perforation of low pressure valve body 2, be provided with piston 5, described piston 5 is divided into I oil pocket and II oil pocket by the inner chamber of valve seat 1 and low pressure valve body 2 compositions, in described ultrahigh pressure valve body 8, be provided with the piston rod 11 being connected with described piston 5, on described valve seat 1, be provided with filler opening 23, on described low pressure valve body 2, be provided with return opening 24, front end at described ultrahigh pressure valve body 8 is provided with III oil pocket, is provided with system oil outlet 26 in the front portion of described ultrahigh pressure valve body 8; A side at described III oil pocket is provided with unloading port 27;
At described piston 5, near one end of filler opening 23, being provided with restriction 22, is taper type at the front end of described piston rod 11, at the front end of described piston rod 11, also by double-screw bolt 13, the first nut 14, is fixedly installed conical seal ring.
Described conical seal ring is beryllium bronze conical seal ring 12.
Between described valve seat 1 and low pressure valve body 2 by an O RunddichtringO 3 being set and an O RunddichtringO back-up ring 4 is tightly connected.
Between described piston rod 11 and ultrahigh pressure valve body 8 by the 2nd O RunddichtringO 9 being set and the 2nd O RunddichtringO back-up ring 10 is tightly connected.
Between described piston 5 and piston rod 11 by the 3rd O RunddichtringO 16 being set and the 3rd O RunddichtringO back-up ring 17 is tightly connected.
Between described piston 5 and described low pressure valve body 2, be provided with guide support ring 6, on the both sides of described guide support ring 6, be provided with y-type seal ring 7, described piston 5 is tightly connected with described low pressure valve body 2.
The other end of described low pressure valve body 2 is sealed and is connected by tapered thread with described ultrahigh pressure valve body 8.
Surface roughness Ra=0.2～0.4 μ the m of described low pressure valve body 2 and ultrahigh pressure valve body 8; Described low pressure valve body 2 and ultrahigh pressure valve body 8 internal diameter roundness tolerances are chosen by 9 class precisions; Described low pressure valve body 2 and ultrahigh pressure valve body 8 end face squareness tolerances are chosen by 7 class precisions; Described tapered thread is tightly connected and adopts the metric thread of 6 class precisions; In the internal surface plating of low pressure valve body 2 and ultrahigh pressure valve body 8, take the chromium layer of thickness as 30～40 μ m.
To modified to hardness 229～285HB after described piston rod 11 processing.
Embodiment 2,
A formula fluid-controlled cut-off valve as described in Example 1, its difference is, modified after hardness 229～285HB after to piston rod 11 processing, then passes through high frequency hardening, hardness reaches 45～55HRC; Roundness tolerance value is chosen by 9 class precisions; End face squareness tolerance value is chosen by 7 class precisions; On piston rod, screw thread is processed according to 6 class precisions; Piston rod surface chromium plating, thickness of coating 0.05mm, plates thick polishing.
Embodiment 3,
A formula fluid-controlled cut-off valve as described in Example 1, its difference is, the cross-sectional diameter of described low pressure valve body is 5 times of ultrahigh pressure valve body cross-sectional diameter.
The material of described valve seat, low pressure valve body, piston and piston rod is steel No. 45, and heat treatment temperature is 740～760 ℃, holding time 4～6h, with the cooling rate of 50～100 ℃/h, with stove, be down to temperature≤600 ℃, the air cooling of coming out of the stove, hardness≤197HBS before processing, hardness≤156HBS after processing.
The material of described ultrahigh pressure valve body is 40Cr alloyed steel, quenching with Subsequent tempering, and 850 ℃ ± 10 ℃ of quenching temperatures, oil cooling is modified, and hardness is between HRC32-36.
Described valve seat end face and axis verticality tolerance value are chosen by 7 class precisions; Pilot hole surface roughness Ra=1.25 μ m in valve seat.
Embodiment 4,
As described in embodiment 1-3, an application for ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve, comprises the steps:
32 pairs of system fuel feeding of starting electrical machinery 31 driven gear pump, three position four-way directional control valve 33 electromagnet 1YA energisings, electromagnetic valve core is in left position, enter work, fluid is through 34 pairs of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve oil inlet P 23 of Pilot operated check valve, promote piston 5 and move, the beryllium bronze seal ring 12 on piston rod 11 is fitted tightly on the valve body conical surface.Electromagnet 1YA power-off, electromagnetic valve core is in meta, and main valve plug two ends are obstructed pressure oil all, and under spring action, main valve plug is in meta, and ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve filler opening 23, oil return inlet T 24 are closed.The high pressure oil of welding system oil circuit is blocked by ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve, produces ultrahigh pressure, and hydraulic pipe line is carried out to ultrahigh pressure pressure testing and explosion;
The electromagnet 2YA energising of three position four-way directional control valve 33, electromagnetic valve core is in right position, enter work, fluid is through ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve oil return inlet T 24 fuel feeding, Pilot operated check valve 34 is in closed condition, piston rod 11 is had to certain buffer capacity, when the oil liquid pressure entering when oil return inlet T 24 reaches the cracking pressure of Pilot operated check valve 34, Pilot operated check valve 34 is opened, piston rod 11 retreats, system fluid flows out through piston rod 11 and the system oil outlet in the large gap of ultrahigh pressure valve body 8 inwalls, reaches the object of fluid high flux flushing.
To stop valve structure finite element analysis of the present invention
Ultra-high pressure stopped valve body of the present invention is carried out to structural analysis can provide foundation for we determine physical dimension, and according to the base dimension of intensive analysis result optimizing stop valve.
Stop valve low pressure valve body material of the present invention is No. 45 steel, and the Young's modulus of this material is 210GPa, and density is
tensile strength 600MPa; Ultrahigh pressure valve body material is 40Cr, and the Young's modulus of this material is 201GPa, and density is
tensile strength 980MPa.
Distortion and the stress of emphasis check stop valve body, so consider separately valve body during modeling.In the situation that not considering that piston changes, valve body is carried out to static structural analysis.
The threedimensional model of valve body is as Fig. 6,10.The effect of the main test load of finite element analysis to model structure.Grid is divided as Fig. 7,11.Grid imposes restriction and simulates Practical Project situation model after dividing, and is its specified boundary and load.
In practical application, valve bottom force and deformation is all less, can apply in valve bottom axial displacement constraint.When adding load, valve inwall only in the part of receiving action of hydraulic force, exerts pressure.After valve body imposed load, as Fig. 8,12, low pressure valve body maximum stress is 39.142MPa, and ultrahigh pressure valve body maximum stress is 390.88MPa.So the design of valve body satisfies condition.
From Fig. 9,13, can find out, it is very little that valve interior wall bears the displacement that the part of ultrahigh pressure produces, and can not have influence on sealing effect.
Claims (10)
1. a ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve, it is characterized in that, this stop valve comprises valve seat, low pressure valve body and ultrahigh pressure valve body, and one end of described valve seat and described low pressure valve body is tightly connected, and the other end of described low pressure valve body is connected with described ultrahigh pressure valve body; In described valve seat, low pressure valve body, connect and be provided with piston, described piston is divided into I oil pocket and II oil pocket by the inner chamber of valve seat and low pressure valve body composition, in described ultrahigh pressure valve body, be provided with the piston rod being connected with described piston, on described valve seat, be provided with filler opening, on described low pressure valve body, be provided with return opening, front end at described ultrahigh pressure valve body is provided with III oil pocket, is provided with system oil outlet in the front portion of described ultrahigh pressure valve body; A side at described III oil pocket is provided with unloading port;
At described piston, near one end of filler opening, being provided with restriction, is taper type at the front end of described piston rod, at the front end of described piston rod, also by double-screw bolt, the first nut, is fixedly installed conical seal ring.
2. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, is characterized in that, described conical seal ring is beryllium bronze conical seal ring.
3. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, is characterized in that, between described valve seat and low pressure valve body, by an O RunddichtringO is set, is connected with an O RunddichtringO retaining ring sealing; Between described piston rod and ultrahigh pressure valve body, by being set, the 2nd O RunddichtringO is connected with the 2nd O RunddichtringO retaining ring sealing; Between described piston and piston rod, by being set, the 3rd O RunddichtringO is connected with the 3rd O RunddichtringO retaining ring sealing.
4. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, it is characterized in that, between described piston and described low pressure valve body, be provided with guide support ring, both sides at described guide support ring are provided with y-type seal ring, and described piston and described low pressure valve body are tightly connected; One end of valve seat and described low pressure valve body is tightly connected by hexagon socket cap head screw and the second spring washer; The other end of described low pressure valve body is sealed and is connected by tapered thread with described ultrahigh pressure valve body.
5. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, is characterized in that, the surface roughness Ra=0.2～0.4 μ m of described low pressure valve body and ultrahigh pressure valve body; Described low pressure valve body and ultrahigh pressure valve body internal diameter roundness tolerance are chosen by 9 class precisions; Described low pressure valve body and ultrahigh pressure valve body end face squareness tolerance are chosen by 7 class precisions; Described tapered thread is tightly connected and adopts the metric thread of 6 class precisions; In the internal surface plating of low pressure valve body and ultrahigh pressure valve body, take the chromium layer of thickness as 30～40 μ m.
6. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, is characterized in that, to modified to hardness 229～285HB after described piston rod processing; Preferably, rear modified after hardness 229～285HB to piston rod processing, then pass through high frequency hardening, hardness reaches 45～55HRC; Roundness tolerance value is chosen by 9 class precisions; End face squareness tolerance value is chosen by 7 class precisions; On piston rod, screw thread is processed according to 6 class precisions; Piston rod surface chromium plating, thickness of coating 0.05mm, plates thick polishing; The material of described valve seat, low pressure valve body, piston and piston rod is steel No. 45, and heat treatment temperature is 740～760 ℃, holding time 4～6h, with the cooling rate of 50～100 ℃/h, with stove, be down to temperature≤600 ℃, the air cooling of coming out of the stove, hardness≤197HBS before processing, hardness≤156HBS after processing.
7. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, is characterized in that, the cross-sectional diameter of described low pressure valve body is 5 times of ultrahigh pressure valve body cross-sectional diameter.
8. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, is characterized in that, the material of described ultrahigh pressure valve body is 40Cr alloyed steel, quenching with Subsequent tempering, and 850 ℃ ± 10 ℃ of quenching temperatures, oil cooling is modified, and hardness is between HRC32-36.
9. a kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve according to claim 1, is characterized in that, described valve seat end face and axis verticality tolerance value are chosen by 7 class precisions; Pilot hole surface roughness Ra=1.25 μ m in valve seat.
10. an application for ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve as described in claim 1-9, comprises the steps:
Starting electrical machinery driven gear pump is to system fuel feeding, three position four-way directional control valve electromagnet 1YA energising, electromagnetic valve core is in left position, enter work, fluid process Pilot operated check valve is to ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve filler opening, promotion piston moves, and the beryllium bronze seal ring on piston rod is fitted tightly on the valve body conical surface.Electromagnet 1YA power-off, electromagnetic valve core is in meta, and main valve plug two ends are obstructed pressure oil all, and under spring action, main valve plug is in meta, and ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve filler opening, return opening are closed.The high pressure oil of welding system oil circuit is blocked by ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve, produces ultrahigh pressure, and hydraulic pipe line is carried out to ultrahigh pressure pressure testing and explosion;
The electromagnet 2YA energising of three position four-way directional control valve, electromagnetic valve core is in right position, enter work, fluid is through ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve return opening fuel feeding, Pilot operated check valve is in closed condition, piston rod is had to certain buffer capacity, when the oil liquid pressure entering when return opening reaches the cracking pressure of Pilot operated check valve, Pilot operated check valve is opened, piston rod retreats, system fluid flows out through the system oil outlet in the large gap of piston rod and ultrahigh pressure valve body inwall, reaches the object of fluid high flux flushing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407065.3A CN103573732B (en) | 2013-09-09 | 2013-09-09 | A kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310407065.3A CN103573732B (en) | 2013-09-09 | 2013-09-09 | A kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103573732A true CN103573732A (en) | 2014-02-12 |
| CN103573732B CN103573732B (en) | 2016-02-17 |
Family
ID=50046250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310407065.3A Active CN103573732B (en) | 2013-09-09 | 2013-09-09 | A kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve and application thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103573732B (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314900A (en) * | 2014-09-01 | 2015-01-28 | 富阳通力机械制造有限公司 | Automatic stop valve |
| CN105864435A (en) * | 2016-05-12 | 2016-08-17 | 湖南航天诚远精密机械有限公司 | Hydraulic control ultrahigh-pressure two-way stop valve for fluid and fluid stopping or communication method |
| CN107847854A (en) * | 2015-04-20 | 2018-03-27 | 纳薄特斯克汽车零部件有限公司 | The check valve of compressed air drying system and compressed air drying system |
| CN108362907A (en) * | 2018-05-04 | 2018-08-03 | 刘冠宏 | A kind of fluid velocity measuring device |
| CN109027357A (en) * | 2018-08-07 | 2018-12-18 | 湖州万士乐建筑工程机械有限公司 | A kind of concrete washing pipeline shut-off valve |
| CN109799139A (en) * | 2019-02-22 | 2019-05-24 | 北京航空航天大学 | A kind of super-pressure tester device for nano-fluid test |
| CN111550600A (en) * | 2020-05-20 | 2020-08-18 | 王善波 | Heat-insulation stop valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3131420A1 (en) * | 1981-08-07 | 1983-02-24 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | "DEVICE IN A FLUID CONTROLLED SYSTEM FOR RAPID ACTUATING A CYLINDER" |
| CN201126045Y (en) * | 2007-12-17 | 2008-10-01 | 天津市华泰森淼生物工程技术有限公司 | Ultra-high pressure stop valve for fluid mixture material having particles |
| CN101368641A (en) * | 2008-09-17 | 2009-02-18 | 天津理工大学 | Unloading type liquid-control hydraulic break valve and its opening method |
| CN101403444A (en) * | 2008-11-17 | 2009-04-08 | 天津理工大学 | Non-discharging type liquid-control hydraulic break valve |
| CN202203462U (en) * | 2011-09-03 | 2012-04-25 | 姚建松 | Conical ultrahigh-pressure self-sealing system |
| CN202674344U (en) * | 2012-06-11 | 2013-01-16 | 巨隆集团芜湖兴隆液压有限公司 | Cone-sealed stop valve |
-
2013
- 2013-09-09 CN CN201310407065.3A patent/CN103573732B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3131420A1 (en) * | 1981-08-07 | 1983-02-24 | Zahnradfabrik Friedrichshafen Ag, 7990 Friedrichshafen | "DEVICE IN A FLUID CONTROLLED SYSTEM FOR RAPID ACTUATING A CYLINDER" |
| CN201126045Y (en) * | 2007-12-17 | 2008-10-01 | 天津市华泰森淼生物工程技术有限公司 | Ultra-high pressure stop valve for fluid mixture material having particles |
| CN101368641A (en) * | 2008-09-17 | 2009-02-18 | 天津理工大学 | Unloading type liquid-control hydraulic break valve and its opening method |
| CN101403444A (en) * | 2008-11-17 | 2009-04-08 | 天津理工大学 | Non-discharging type liquid-control hydraulic break valve |
| CN202203462U (en) * | 2011-09-03 | 2012-04-25 | 姚建松 | Conical ultrahigh-pressure self-sealing system |
| CN202674344U (en) * | 2012-06-11 | 2013-01-16 | 巨隆集团芜湖兴隆液压有限公司 | Cone-sealed stop valve |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104314900A (en) * | 2014-09-01 | 2015-01-28 | 富阳通力机械制造有限公司 | Automatic stop valve |
| CN107847854A (en) * | 2015-04-20 | 2018-03-27 | 纳薄特斯克汽车零部件有限公司 | The check valve of compressed air drying system and compressed air drying system |
| CN105864435A (en) * | 2016-05-12 | 2016-08-17 | 湖南航天诚远精密机械有限公司 | Hydraulic control ultrahigh-pressure two-way stop valve for fluid and fluid stopping or communication method |
| CN105864435B (en) * | 2016-05-12 | 2018-06-29 | 湖南航天诚远精密机械有限公司 | Fluid hydraulic control super-pressure two-way shut-off valve and the method for fluid cut-off or connection |
| CN108362907A (en) * | 2018-05-04 | 2018-08-03 | 刘冠宏 | A kind of fluid velocity measuring device |
| CN108362907B (en) * | 2018-05-04 | 2024-03-22 | 刘冠宏 | Fluid velocity measuring device |
| CN109027357A (en) * | 2018-08-07 | 2018-12-18 | 湖州万士乐建筑工程机械有限公司 | A kind of concrete washing pipeline shut-off valve |
| CN109027357B (en) * | 2018-08-07 | 2022-06-10 | 通圆建筑集团有限公司 | Concrete cleaning pipeline stop valve |
| CN109799139A (en) * | 2019-02-22 | 2019-05-24 | 北京航空航天大学 | A kind of super-pressure tester device for nano-fluid test |
| CN109799139B (en) * | 2019-02-22 | 2024-03-15 | 北京航空航天大学 | Ultrahigh pressure test instrument for nanofluid test |
| CN111550600A (en) * | 2020-05-20 | 2020-08-18 | 王善波 | Heat-insulation stop valve |
| CN111550600B (en) * | 2020-05-20 | 2021-04-20 | 浙江亚核阀门有限公司 | Heat-insulation stop valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103573732B (en) | 2016-02-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103573732B (en) | A kind of ultra-high pressure high flow supercharging formula fluid-controlled cut-off valve and application thereof | |
| CN102650342A (en) | Piston type compound sealing axial flow type check valve | |
| CN203477483U (en) | High-pressure axial flow check valve | |
| CN102563136A (en) | Low-resistance non-return valve | |
| CN103672009A (en) | Forged high-differential-pressure noise-reduction V-shaped regulating ball valve | |
| CN201502761U (en) | Pressure reducing valve with composite valve | |
| CN204459327U (en) | A kind of safety valve | |
| CN105443466B (en) | Pipe straightener hydraulic control system for opening cylinder and upper roller compensating cylinder soon | |
| Liu et al. | Design and experiment-based optimization of high-flow hydraulic one-way valves | |
| CN203627876U (en) | Forging type high pressure difference noise reduction V-shaped adjusting ball valve | |
| CN202360819U (en) | Low-resistance check valve | |
| CN201723746U (en) | High-temperature and high-pressure stop valve of T-type power station | |
| CN207080604U (en) | One kind seals noiseless magnetic valve | |
| CN206338448U (en) | Ammonia check valve special | |
| CN214222104U (en) | Axial flow type check valve with slowly-closed adjustable function | |
| CN203374898U (en) | Knocking-proof type check valve | |
| CN202790558U (en) | Self-tight type seal ultrahigh-pressure pressure relief valve | |
| CN201666394U (en) | Shaft end type hydraulic control one-way valve | |
| CN207247437U (en) | A kind of high-pressure micro mist humidifier for preventing water hammer effect | |
| CN204459328U (en) | Safety valve | |
| CN201731074U (en) | Y-type power station high temperature high voltage stop valve | |
| CN206592362U (en) | A kind of screw thread inserting type Fill valve | |
| CN201412569Y (en) | Dual-eccentric high performance check valve | |
| CN205026125U (en) | Hard seal structure of high temperature cut -off valve | |
| CN203836300U (en) | Lifting type silent check valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |