CN106762917B - A kind of big flow explosion-proof valve and working method - Google Patents
A kind of big flow explosion-proof valve and working method Download PDFInfo
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- CN106762917B CN106762917B CN201710140097.XA CN201710140097A CN106762917B CN 106762917 B CN106762917 B CN 106762917B CN 201710140097 A CN201710140097 A CN 201710140097A CN 106762917 B CN106762917 B CN 106762917B
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- valve
- spool
- oil duct
- fluid port
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/023—Excess flow valves, e.g. for locking cylinders in case of hose burst
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Safety Valves (AREA)
Abstract
A kind of big flow explosion-proof valve, including spool, valve pocket, valve body, valve seat；Valve chamber is set in the valve body, and the valve seat is sleeved on valve chamber, and valve pocket is arranged in the valve chamber, and the spool is placed in valve pocket；The valve body is provided with hydraulic fluid port A, hydraulic fluid port B；It is characterized in that：The spool is set as inverse-T-shaped, and the inverse-T-shaped vertical section is cylinder, and cylindrical sides are communicated with hydraulic fluid port B；The inverse-T-shaped lateral part is butterfly, and butterfly end is oppositely arranged with hydraulic fluid port A；Lateral part described in this programme is butterfly, and butterfly end is oppositely arranged with hydraulic fluid port A.The weight for reducing spool in this programme increases valve port area of passage, reduces the valve port pressure loss.
Description
Technical field
The present invention relates to a kind of explosion-proof valve, especially a kind of big flow explosion-proof valve.
Background technology
When carrying out deep-sea drilling operation, semisubmersible drilling platform or floating barge need to be used.They under the wave action,
In addition to being all around swung left and right, periodical heave movement is also will produce, and drill string is made to pump, if do not adopted
Indemnifying measure is taken, Bottom Hole Bit Weight In A will be caused to change, influences to creep into, or even drill bit is made to be detached from shaft bottom, can not be crept into, so must be right
The heave movement of drill string takes indemnifying measure.
Drill string compensation is broadly divided into telescopic drill rod heave compensation, hook block heave compensation, overhead traveling crane heave compensation, winch liter
Heavy compensation, marine riser heave compensation etc., wherein telescopic drill rod heave compensation is due to can not meet modern construction technique, gradually
It is eliminated.Other several heave compensators are carried out final heave compensation using hydraulic cylinder and moved, big with tensile force,
Feature simple in structure, easy to maintain, reliability is high is widely used in the 5th newly-built generation, the 6th generation semi-submerged platform.
Above-mentioned several heave compensation systems using hydraulic cylinder, the pipeline of connection liquid cylinder pressure is due to the punching that is frequently under pressure
Hit, the factors such as mechanical oscillation influence, there are the risks of booster, once occurring, gently then damage drill bit, drilling rod, it will cause peaces for weight
Full production accident.Therefore, it is necessary to take measures to be prevented, current way is that installation is explosion-proof at oil cylinder oil inlet mouth at present
Valve.And the explosion-proof valve applied in domestic heave compensator at present, as shown in figure 3, there is following aspect to need to be improved：
1, it is completely dependent on import, not only purchase cost is high, and under one's control everywhere；
2, use cost is high, once it breaks down, it is necessary to integral replacing；
3, performance parameter cannot be adjusted, and system design is limited by valve, is unfavorable for performance system optimum performance；
4, excessively heavy, it is not easy to installation, safeguards.
Invention content
Technical problem solved by the invention is to provide a kind of big flow explosion-proof valve, by the modularization of autonomous innovation,
Densification, human oriented design solve disadvantage present in background technology.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention is as follows：
A kind of big flow explosion-proof valve, including spool, valve pocket, valve body, valve seat；Valve chamber, the valve seat are set in the valve body
It is sleeved on valve chamber, valve pocket is set in the valve chamber, the spool is placed in valve pocket；The valve body is provided with hydraulic fluid port A, hydraulic fluid port B；
It is characterized in that：The spool is set as inverse-T-shaped, and the inverse-T-shaped vertical section is cylinder, cylindrical sides and hydraulic fluid port B
It is oppositely arranged；The inverse-T-shaped lateral part is butterfly, and butterfly end is oppositely arranged with hydraulic fluid port A；Lateral part described in this programme is
Butterfly, butterfly end are oppositely arranged with hydraulic fluid port A.Compared to whole cylindrical spool, reduces the weight of spool, increase valve port mistake
Flow area reduces the valve port pressure loss.
Further：The valve seat is equipped with the first aperture a1, set on the valve body second orifice a2, the first aperture a1 with
Second orifice a2 connections；The valve body is equipped with pressure tap MA, pressure tap MB, and the pressure tap MA is connected to second orifice a2,
Pressure tap MB is connected to third aperture b1.Pressure transmitter can be connected at pressure tap MA and pressure tap MB, realize remote monitoring.
Further：The inverse-T-shaped vertical section of spool opens up the 4th aperture c, lateral part opens up the 5th aperture c1,
The spring base is provided with the 6th aperture c2, and the 4th aperture c, the 5th aperture c1, the 6th aperture c2 are interconnected.
Further：The valve body top setting adjusting screw rod, cover board, the adjusting screw rod withstand spring base；The valve
Intracavitary sequence setting spring base, spring, adjusting gasket, the valve pocket is nested in valve chamber, and withstands one end of spring, spring
The other end is withstood by spring base.The adjusting screw rod is threadedly attached in cover board, and is locked by locking nut.Pass through tune
Pre-set springs power and port size can be changed in whole adjusting screw rod, to adapt to the demand of different heave compensators.
Further：Adjusting gasket is set between the spool and spring base.By the quantity or thickness that change adjusting gasket
Degree, thus it is possible to vary the total length after spool and spring base assembly.
Further：The spool outer circle sets multiple annular grooves.It is changeable pre- by adjusting adjusting gasket quantity or thickness
If spring force and port size, to adapt to the demand of different heave compensators.
Further：The spring base top is provided with cross-like groove, by pressure communication at oil duct b to valve chamber d, acts on
Spool upper end.
Further：The valve pocket top is provided with cross-like groove.
A kind of working method of big flow explosion-proof valve is：When heave compensation system works normally, spool is located at just
Beginning position, the hydraulic oil inputted from hydraulic fluid port A flow to oil duct b through oil duct a and flow to oil cylinder with hydraulic fluid port B connections, meanwhile, hydraulic oil is through oil
Road b, the 5th aperture, the 4th aperture, the 6th aperture flow to valve chamber d, and pressure and spring-force driven dual are in spool lower end, oil at oil duct a
Pressure acts on spool upper end at road b and at valve chamber d, from hydraulic fluid port A input hydraulic pressure oil when, influenced by flow resistance, pressure is high at oil duct a
Pressure at oil duct b and at valve chamber d, spring-force driven dual, spool 6 remain static in addition；The hydraulic oil warp inputted from hydraulic fluid port B
Oil duct b flows to oil duct a and connects and flow out with hydraulic fluid port A, meanwhile, hydraulic oil is through oil duct b, the 5th aperture, the 4th aperture, the 6th aperture
Flow to valve chamber d, pressure acts on spool at spool lower end, oil duct b and at valve chamber d for pressure and spring-force driven dual at oil duct a
End, is influenced by flow resistance, and pressure is higher than pressure at oil duct a at oil duct b and at valve chamber d, but under normal operating conditions, the two difference
It is not enough to overcome preset spring force, spool is still in stationary state；When the pipeline for connecting hydraulic fluid port A bursts suddenly, in oil cylinder
Hydraulic oil flow to the flow of hydraulic fluid port A by hydraulic fluid port B and increase suddenly, influenced by flow resistance, at this time pressure at oil duct b and at valve chamber d
Increase with pressure difference value at oil duct a, makes spool 6 that spring-force driven dual generation be overcome to move downward, until spool is closed with valve seat, this
When oil duct b and oil duct a be cut off, hydraulic oil cannot flow to hydraulic fluid port A by hydraulic fluid port B again in oil cylinder, oil cylinder stop motion, realize anti-
Quick-fried function.
A kind of big flow explosion-proof valve is to the advantages of working method of heave compensator：
1, when oil cylinder oil inlet rostrum so bursts, oil cylinder is conducted oneself with dignity and load effect uncontrolled quickly can downwards be transported
Dynamic, spool overcomes spring force rapid closing at this time, and oil cylinder is prevented to continue to move downward；
2 can be changed pre-set springs power and port size by adjusting adjusting screw rod, adjustment adjusting gasket quantity or thickness, with
Adapt to the demand of different heave compensators；
Real-time working at the detection of pressure measurement instrument or monitoring hydraulic fluid port A, hydraulic fluid port B can be installed as needed at 3 hydraulic fluid port MA, hydraulic fluid port MB
Pressure, supervisory control system running state.
Advantageous effect
1, break external monopolization, it is no longer under one's control and substantially reduce purchase cost；
2, delicate valve seat, valve pocket etc. are designed using seperated, and when failure no longer needs integral replacing, substantially reduce use at
This；
3, General design, it is applied widely, be convenient for mass production；
4, modularized design, it is easy to process, compact-sized, be easily installed, safeguard.
Description of the drawings
Fig. 1 is the A-A diagrammatic cross-sections of Fig. 2；
Fig. 2 is big flow explosion-proof valve schematic diagram；
Fig. 3 is existing import explosion-proof valve schematic diagram；
In figure：
1 adjusting screw rod, 2 cover boards, 3 spring bases, 4 springs, 5 adjusting gaskets, 6 spools, 7, valve pocket, 8 valve bodies, 9 plugs, 10 valves
Seat, 11 valve seat fixing screws, 12 locking nuts, 13 hydraulic fluid port A, 14 hydraulic fluid port B, 15 hydraulic fluid port MA, 16 hydraulic fluid port MB, the first aperture a1,
Two aperture a2, third aperture b1, the 4th aperture c, the 5th aperture c1, the 6th aperture c2.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is further explained.
Embodiment 1：
As shown in Figure 1, 2, a kind of big flow explosion-proof valve, including adjusting screw rod 1, cover board 2, spring base 3, spring 4, spacer
Piece 5, spool 6, valve pocket 7, valve body 8, plug 9, valve seat 10, valve seat fixing screws 11, locking nut 12；Shown valve body 8 is provided with
Hydraulic fluid port A, hydraulic fluid port B, hydraulic fluid port MA and hydraulic fluid port MB；Spring base 3, spring 4, adjusting gasket 5, valve pocket 7, valve are provided in shown valve body 8
Core 6, valve seat 10, valve seat fixing screws 11, and from top to bottom set gradually.Setting valve chamber in shown valve body 8, shown spring base 3,
Spring 4, adjusting gasket 5, valve pocket 7, spool 6, valve seat 10 are set within valve chamber；Shown valve pocket 7 is nested on valve chamber, and is withstood
The other end of one end of spring 4, spring 4 is withstood by spring base 3；Shown spool 6 is sleeved in valve pocket 7, and one end of spool 6 passes through
Screw thread and spring base 3 connect, and plug 9 is arranged in 6 other end of spool, and adjusting gasket 5 is arranged between spool 6 and spring base 3；Shown valve
Seat 10 is sleeved on by valve seat fixing screws 11 on valve chamber；Shown cover board 2 is connected by screw and valve body 8, is placed in except valve chamber,
Shown adjusting screw rod 1 is threadedly attached in cover board 2, and is locked by locking nut 12.
Embodiment 2：
A kind of big flow explosion-proof valve, including spool 6, valve pocket 7, valve body 8, valve seat 10；Valve chamber, institute are set in the valve body 8
It states valve seat 10 to be sleeved on valve chamber, valve pocket is set in the valve chamber, and the valve core housing is loaded in valve pocket；The valve body 8 is provided with
13 hydraulic fluid port A, 14 hydraulic fluid port B；It is characterized in that：The spool 6 is set as inverse-T-shaped, and the vertical section is cylinder, cylindrical side
Face is oppositely arranged with hydraulic fluid port B；The lateral part is butterfly, and butterfly end is oppositely arranged with hydraulic fluid port A.Compared to whole cylindrical valve
Core reduces the weight of spool, increases valve port area of passage, reduces the valve port pressure loss.
Embodiment 3：
A kind of big flow explosion-proof valve working method is：When heave compensation system works normally, spool 6 is located at initial bit
Set, the hydraulic oil inputted from hydraulic fluid port A flows to oil duct b through oil duct a and flows to oil cylinder with hydraulic fluid port B connections, meanwhile, hydraulic oil through oil duct b,
5th aperture c1, the 4th aperture c, the 6th aperture c2 flow to valve chamber d, and pressure and spring-force driven dual are in spool lower end, oil at oil duct a
Pressure acts on spool upper end at road b and at valve chamber d, from hydraulic fluid port A input hydraulic pressure oil when, influenced by flow resistance, pressure is high at oil duct a
Pressure at oil duct b and at valve chamber d, spring-force driven dual, spool 6 remain static in addition；The hydraulic oil warp inputted from hydraulic fluid port B
Oil duct b flows to oil duct a and connects and flow out with hydraulic fluid port A, meanwhile, hydraulic oil is through oil duct b, the 5th aperture c1, the 4th aperture c, the 6th
Aperture c2 flows to valve chamber d, and pressure acts at spool lower end, oil duct b and at valve chamber d for pressure and spring-force driven dual at oil duct a
Spool upper end, is influenced by flow resistance, and pressure is higher than pressure at oil duct a at oil duct b and at valve chamber d, but under normal operating conditions, two
Person's difference is not enough to overcome preset spring force, and spool is still in stationary state；When the pipeline for connecting hydraulic fluid port A bursts suddenly,
The flow that in-oil cylinder hydraulic oil flows to hydraulic fluid port A by hydraulic fluid port B increases suddenly, is influenced by flow resistance, at this time at oil duct b and valve chamber d
Locate pressure difference value at pressure and oil duct a to increase, makes spool 6 that spring-force driven dual generation be overcome to move downward, until spool 6 and valve seat
10 are closed, and oil duct b and oil duct a is cut off at this time, and hydraulic oil cannot flow to hydraulic fluid port A by hydraulic fluid port B again in oil cylinder, and oil cylinder stops fortune
It is dynamic.
The basic principles and main features and advantages of the present invention of the present invention, the technology of the industry has been shown and described above
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention, the claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (6)
1. a kind of big flow explosion-proof valve, including spool（6）, valve pocket（7）, valve body（8）, valve seat（10）；The valve body（8）Interior setting
Valve chamber, the valve seat（10）It is nested in valve chamber bottom, valve pocket is set in the valve chamber（7）, the spool（6）It is placed in valve pocket（7）
It is interior；The valve body（8）It is provided with hydraulic fluid port A（13）, hydraulic fluid port B（14）；It is characterized in that：The spool（6）It is set as inverse-T-shaped, institute
It is cylinder, cylindrical sides and hydraulic fluid port B to state inverse-T-shaped vertical section（14）It is oppositely arranged；The inverse-T-shaped lateral part is
Butterfly, butterfly end and hydraulic fluid port A（13）It is oppositely arranged；
The spool（6）Inverse-T-shaped vertical section opens up the 4th aperture（c）, lateral part open up the 5th aperture（c1）；Further include
Spring base（3）, the spring base（3）Bottom passes through screw thread and spool（6）Top connection, the spring base（3）It is provided with the 6th
Aperture（c2）, and the 5th aperture（c1）, the 4th aperture（c）, the 6th aperture（c2）It is sequentially communicated；
Valve body（8）Top be provided with cover board（2）, cover board（2）Be internally provided with valve chamber d, valve body（8）It is upper to be located at spool transverse part
Part above point is equipped with oil duct b, and oil duct b is connected to hydraulic fluid port B, valve body（8）The upper part below spool lateral part is set
There are oil duct a, oil duct a to be connected to hydraulic fluid port A, the bottom of the inverse-T-shaped vertical section of spool is provided with plug（9）To block the 4th aperture
（c）Bottom end；Sequence setting spring base in valve chamber（3）, spring（4）, valve pocket（7）It is nested in valve chamber, and withstands spring（4）'s
One end, spring（4）The other end by spring base（3）It withstands at top；
The hydraulic oil inputted from hydraulic fluid port B flows to oil duct a through oil duct b, then connects and flow out with hydraulic fluid port A, meanwhile, hydraulic oil is through oil duct
B, the 5th aperture（c1）, the 4th aperture（c）, the 6th aperture（c2）Flow to valve chamber d, pressure and spring force are jointly to valve at oil duct a
Core generates active force straight up, at oil duct b and the places the valve chamber d pressure active force to spool generation straight down jointly；When
When connecting the pipelines from bursting of hydraulic fluid port A, the flow that in-oil cylinder hydraulic oil flows to hydraulic fluid port A by hydraulic fluid port B increases suddenly, by flow resistance shadow
It rings, the sum of pressure increases with pressure difference value at oil duct a at oil duct b and at valve chamber d at this time, makes spool that spring-force driven dual be overcome to generate
It moves downward, until spool and valve seat are closed.
2. a kind of big flow explosion-proof valve as described in claim 1, it is characterised in that：The valve seat（10）It is equipped with the first aperture
（a1）, the valve body（8）On set second orifice（a2）, the first aperture（a1）With second orifice（a2）Connection；The valve body（8）On
Third aperture is set（b1）, it is located above spool lateral part；The valve body（8）On set there are two pressure tap, one of them
Pressure tap and second orifice（a2）Connection, another pressure tap and third aperture（b1）Connection.
3. a kind of big flow explosion-proof valve as described in claim 1, it is characterised in that：The spool（6）And spring base（3）Between
Adjusting gasket is set（5）.
4. a kind of big flow explosion-proof valve as described in claim 1, it is characterised in that：The cover board（2）Top setting adjusts spiral shell
Bar（1）, the adjusting screw rod（1）Withstand spring base（3）；The spring base（3）Top is provided with cross-like groove.
5. a kind of big flow explosion-proof valve as described in claim 1, it is characterised in that：The valve pocket（7）Top is provided with cross
Groove.
6. a kind of big flow explosion-proof valve working method as described in claim 1, it is characterised in that：When normal work, spool position
In initial position, the hydraulic oil inputted from hydraulic fluid port A flows to oil duct b through oil duct a, then connects and flow out with hydraulic fluid port B, meanwhile, hydraulic oil
Valve chamber d is flowed to through oil duct b, the 5th aperture, the 4th aperture, the 6th aperture, and pressure and spring force jointly generate spool at oil duct a
Active force straight up, pressure generates active force straight down to spool jointly at oil duct b and at valve chamber d；It is defeated from hydraulic fluid port A
It when entering hydraulic oil, is influenced by flow resistance, pressure is higher than pressure at oil duct b and at valve chamber d at oil duct a, spring-force driven dual in addition, spool
It remains static；The hydraulic oil inputted from hydraulic fluid port B flows to oil duct a through oil duct b, then connects and flow out with hydraulic fluid port A, meanwhile, liquid
Pressure oil flows to valve chamber d through oil duct b, the 5th aperture, the 4th aperture, the 6th aperture, and pressure and spring force are jointly to spool at oil duct a
It generates active force straight up, at oil duct b and the places the valve chamber d pressure active force to spool generation straight down jointly, is flowed
Resistance influences, and the sum of pressure is higher than pressure at oil duct a at oil duct b and at valve chamber d, but under normal operating conditions, the two difference is not
It is enough to overcome preset spring force, spool is still in stationary state；When connecting the pipelines from bursting of hydraulic fluid port A, in-oil cylinder hydraulic pressure
The flow that oil flows to hydraulic fluid port A by hydraulic fluid port B increases suddenly, is influenced by flow resistance, at this time at oil duct b and at valve chamber d the sum of pressure with
Pressure difference value increases at oil duct a, makes spool that spring-force driven dual generation be overcome to move downward, until spool and valve seat are closed, at this time
Oil duct b and oil duct a is cut off, and hydraulic oil cannot flow to hydraulic fluid port A by hydraulic fluid port B again in oil cylinder, and oil cylinder stop motion is realized explosion-proof
Function.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710140097.XA CN106762917B (en) | 2017-03-10 | 2017-03-10 | A kind of big flow explosion-proof valve and working method |
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|---|---|---|---|
| CN201710140097.XA CN106762917B (en) | 2017-03-10 | 2017-03-10 | A kind of big flow explosion-proof valve and working method |
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| CN106762917A CN106762917A (en) | 2017-05-31 |
| CN106762917B true CN106762917B (en) | 2018-09-18 |
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| CN107060689A (en) * | 2017-06-02 | 2017-08-18 | 成都市卓新实业有限公司 | A kind of drilling rod is from grouting method |
| CN108679027A (en) * | 2018-08-03 | 2018-10-19 | 中船绿洲镇江船舶辅机有限公司 | A kind of overflow type hydraulic explosion-proof valve |
| CN114321530A (en) * | 2020-09-30 | 2022-04-12 | 上海极智机电设备有限公司 | Oil pipe joint with explosion-proof function |
| CN113775599B (en) * | 2021-11-02 | 2022-06-10 | 杭州谦泰五金机械制造有限公司 | Temperature-reduction type explosion-proof early-warning hydraulic oil cylinder |
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| CN106402087A (en) * | 2016-10-08 | 2017-02-15 | 苏州威尔特铝合金升降机械有限公司 | Explosion protection system for mast-type hydraulic cylinder |
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| CN2205882Y (en) * | 1994-12-16 | 1995-08-23 | 胡国清 | Explosion-proof oil-leaking stop valve |
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| CN106762917A (en) | 2017-05-31 |
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