CN101275685A - Emulsifiable solution medium large flow safety valve - Google Patents
Emulsifiable solution medium large flow safety valve Download PDFInfo
- Publication number
- CN101275685A CN101275685A CNA2008101027167A CN200810102716A CN101275685A CN 101275685 A CN101275685 A CN 101275685A CN A2008101027167 A CNA2008101027167 A CN A2008101027167A CN 200810102716 A CN200810102716 A CN 200810102716A CN 101275685 A CN101275685 A CN 101275685A
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- spool
- liquid entering
- entering hole
- hole
- valve body
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Abstract
The invention discloses an emulsion medium mass flow safety valve, characterized by including a first level opening device, a second level opening device, wherein the first level opening device is provided with a first liquor feed port and a first overflow port, a first valve core is provided between the first liquor feed port and the first overflow port, and the space of the first valve core and the first liquor feed port is the hard sealing; the second level opening device is provided with a second liquor feed port and a second overflow port, and a second valve core is arranged between the second liquor feed port and the second overflow port, while the middle of the second valve core is provided with via holes, and the second liquor feed port is communicated with the first liquor feed port through the via holes. When the pressure raises, the liquid first acts on the first valve core through thevia hole at the middle of the second valve core, the first opening device is opened, due to the hydraulic gradient formed at the two sides of the via holes, the second opening device is opened. The valve has small size, long service life and the sealing member is not easy to damage.
Description
Technical field
The present invention relates to a kind of safety valve, relate in particular to a kind of emulsifiable solution medium large flow safety valve.
Background technique
Existing high-flow safety valve has two kinds of patterns:
One-level opening structure: mainly utilize the through-current capacity of spool to come control flow rate, reduce physical dimension during small flow, increase the spool size during big flow, and increase, increase through flow hole, reach the purpose of augmented flow with this.
The secondary opening structure: secondary is opened and to be equivalent to two safety valves series connection, and spool all be plunger-type structure, and is similar to the primary structure working principle, just the different opening sequence differences that design according to spring.
Above-mentioned one-level opening type and secondary opening type all are to adopt spring to control set pressure.
There is following shortcoming at least in above-mentioned prior art: the long-term overflow of safety valve small flow, cause that the via seal part damages easily, the safety valve life-span is low.
Summary of the invention
The purpose of this invention is to provide the emulsifiable solution medium large flow safety valve that a kind of Sealing is not fragile, the life-span is high.
The objective of the invention is to be achieved through the following technical solutions:
Emulsifiable solution medium large flow safety valve of the present invention, comprise one-level opening device, secondary opening device, it is characterized in that, described one-level opening device comprises first valve body, the axis central part of described first valve body is provided with first liquid entering hole, the sidewall of described first valve body is provided with first flow-off, is provided with first spool between described first liquid entering hole and first flow-off;
One end shutoff of described first spool is at the described first liquid entering hole place, and is hard sealing between described first spool and described first liquid entering hole; Be provided with first spring between the other end and described first valve body.
As seen from the above technical solution provided by the invention, emulsifiable solution medium large flow safety valve of the present invention, the one-level opening device comprises first valve body, the axis central part of first valve body is provided with first liquid entering hole, the sidewall of first valve body is provided with first flow-off, is provided with first spool between described first liquid entering hole and first flow-off; One end shutoff of first spool is at the first liquid entering hole place.When pressure raise, liquid at first acted on first spool by the through hole at second spool middle part, and the one-level opening device is opened, because flow of fluid forms hydraulic gradient in the through hole both sides at second spool middle part, the secondary opening device was opened.Because be hard sealing between first spool of one-level opening device and first liquid entering hole, Sealing is not fragile, the life-span is high.
Description of drawings
Fig. 1 is the structural representation of emulsifiable solution medium large flow safety valve specific embodiment one of the present invention;
Fig. 2 is the end-face structure schematic representation of first spool among the present invention and valve seat;
Fig. 3 is the structural representation of emulsifiable solution medium large flow safety valve specific embodiment two of the present invention;
Fig. 4 is the structural representation of emulsifiable solution medium large flow safety valve specific embodiment three of the present invention;
Fig. 5 is the structural representation of emulsifiable solution medium large flow safety valve specific embodiment four of the present invention.
Embodiment
Emulsifiable solution medium large flow safety valve of the present invention, its preferable embodiment as shown in Figure 1, comprise one-level opening device and secondary opening device, the one-level opening device can be provided with the first liquid entering hole C and the first flow-off D, can be provided with first spool 7 between the first liquid entering hole C and the first flow-off D, can realize opening or closing between the first liquid entering hole C and the first flow-off D by first spool 7.
Concrete one-level opening device can comprise that first valve body, 5, the first liquid entering hole C are located at the axis central part of first valve body 5; The first flow-off D can be located on the sidewall of first valve body 5; One end shutoff of first spool 7 is at the first liquid entering hole C place; Be provided with first spring 9 between the other end and first valve body 5, realize first spool 7 and the pre-tightening seal of the first liquid entering hole C by spring force.
One end of first spring 9 can be against on first spool 7 by spring seat 8; The other end can be provided with controlling device, is used for regulating the pretightening force of first spring 9.Controlling device can comprise screw plug 10, is provided with the screw thread that is meshed between screw plug 10 and first valve body 5, realizes regulating by screw thread.The rear portion of screw plug 10 can also be provided with locking nut 11, when regulate screw plug 10 after can be by locking nut 11 locking.
The end that first valve body 5 is provided with the first liquid entering hole C can be provided with the axis central part that valve seat 6, the first liquid entering hole C are located at valve seat 6, and first valve body 5 can be fixedlyed connected with an end of second valve body 2 with valve seat 6.
As shown in Figure 2, the end that first spool 7 inserts in the valve seat 6 is cylindric, and its outer wall matches with the inwall of valve seat 6, and has logical liquid bath 12 vertically.
The secondary opening device is provided with the second liquid entering hole A and the second flow-off E, is provided with second spool 3 between the second liquid entering hole A and the second flow-off E, can realize opening or closing between the second liquid entering hole A and the second flow-off E by second spool 3.The middle part of second spool 3 can also be provided with through hole B, and the second liquid entering hole A communicates with the first liquid entering hole C by through hole B.
Concrete secondary opening device can comprise that second valve body, 2, the second liquid entering hole A can be located at the axis central part of second valve body 2; The second flow-off E is located on the sidewall of second valve body 2; The sidewall shutoff of second spool 3 is at the second flow-off E place; Second spool 3 away from being provided with second spring 4 between the end of the second liquid entering hole A and second valve body 2.
As shown in Figure 3, guiding device can be guide cup 15, is specially hollow cup-shaped, and its outer wall matches with the inwall of the hollow cylindrical of second spool 3, and the bottom opening of guide cup 15 is used for liquid and passes through.Second spring 4 is arranged between the bottom and second spool 3 of guide cup 15.When second spool 3 moved axially, the outer wall of guide cup 15 just played leading role to it like this.Also play certain damping function simultaneously, can prevent that the spool vibration is excessive.
As shown in Figure 4, guiding device also can be damper 16, and between the through hole B and the first liquid entering hole C of damper 16 on the interlayer of second spool 3, and damper 16 has through hole in the axial direction, is used for liquid and passes through.When second spool 3 moved axially, damper 16 just played leading role to it like this.Also play certain damping function simultaneously, can prevent that the spool vibration is excessive.
As shown in Figure 5, can also be provided with sealing gasket 17 between the end of second spool 3 and the joint 1, sealing gasket 17 is a soft seal, further realizes the sealing between the second liquid entering hole A and the second flow-off E.
Emulsifiable solution medium large flow safety valve of the present invention adopts secondary to open, and wherein one-level is opened and adopted hard sealing structure, and secondary opening uses Sealing to seal.Its working principle is described below:
As shown in Figure 1, liquid medium enters safety valve through the second liquid entering hole A, acts directly on then on first spool 7, and working pressure is regulated by first spring 9, and second spool, 3 places are seal with O rings, provide reposition force by second spring 4.When liquid medium reaches the working pressure that first spring 9 set up, first spool 7 is at first opened and is carried out release, along with the both sides, through hole B place that are flowing in of liquid medium form hydraulic gradient, pressure reduction promotes 3 motions of second spool and compresses second spring 4, along with moving of second spool 3, second spool 3 is opened and is carried out release, because of the logical liquid measure of second spool 3 is bigger, has quickened the pressure relief capability of whole system.When medium pressure liquid is lower than set pressure, first spool 7 resets under the effect of first spring 9 and closes, this moment, through hole B no liquid flowed, the pressure difference at second spool, 3 two ends disappears, under the reposition force and the power acting in conjunction of surging of second spring 4,3 quick closedowns of second spool, safety valve stops off-load.
Safety valve of the present invention, the design of spring mainly is thought of as high-pressure low-flow, opens and effectively utilize the hydraulic gradient of liquid resistance generation by two-stage, realized big flow, make this valve overall structure size little, avoided traditional high-flow safety valve design to be subjected to spring size restrictions, the shortcoming that structure is excessive;
Wherein, one-level is opened and is adopted hard sealing structure, and secondary opening uses Sealing to seal, and has reduced the Sealing probability of damage, thereby has increased working life; Certainly, secondary spool seal form also can adopt structures such as the hard sealing of plunger-type structure, plane soft seal or the conical surface.
Safety valve of the present invention is when carrying out off-load, because the liquid medium that unloads is not all through a liquid outlet, after first spool 7 is opened, mobile second spool 3 that causes of liquid medium moves, release is mainly at second spool, 3 places, and it is small flow that one-level is opened, and secondary is opened and is big flow, the stroke of first spool 7 is very little, only is 1～2mm.So the decrement of first spring 9 does not need too big, improved the open and shut characteristic of safety valve greatly.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.
Claims (10)
1, a kind of emulsifiable solution medium large flow safety valve, comprise one-level opening device, secondary opening device, it is characterized in that, described one-level opening device comprises first valve body, the axis central part of described first valve body is provided with first liquid entering hole, the sidewall of described first valve body is provided with first flow-off, is provided with first spool between described first liquid entering hole and first flow-off;
One end shutoff of described first spool is at the described first liquid entering hole place, and is hard sealing between described first spool and described first liquid entering hole; Be provided with first spring between the other end and described first valve body.
2, emulsifiable solution medium large flow safety valve according to claim 1, it is characterized in that, described secondary opening device is provided with second liquid entering hole and second flow-off, be provided with second spool between described second liquid entering hole and second flow-off, the middle part of described second spool is provided with through hole, and described second liquid entering hole communicates with described first liquid entering hole by described through hole.
3, emulsifiable solution medium large flow safety valve according to claim 2 is characterized in that, described secondary opening device comprises second valve body, and described second liquid entering hole is located at the axis central part of described second valve body; Described second flow-off is located on the sidewall of described second valve body;
The sidewall shutoff of described second spool is at the described second flow-off place; Described second spool away from being provided with second spring between end of described second liquid entering hole and described second valve body.
4, emulsifiable solution medium large flow safety valve according to claim 3, it is characterized in that, one end of described first valve body is provided with valve seat, and described first liquid entering hole is located at the axis central part of described valve seat, and described first valve body is fixedlyed connected with an end of described second valve body with valve seat;
One end of described first spool inserts in the described valve seat, and is provided with the hard sealing surface of the taper that matches between described first spool and the described valve seat.
5, emulsifiable solution medium large flow safety valve according to claim 4 is characterized in that, the end that described first spool inserts in the described valve seat is cylindric, and its outer wall matches with the inwall of described valve seat, and has logical liquid bath vertically.
6, emulsifiable solution medium large flow safety valve according to claim 3 is characterized in that, described second spool is a hollow cylindrical, and its middle part is provided with interlayer, has through hole on the described interlayer.
7, emulsifiable solution medium large flow safety valve according to claim 6 is characterized in that, described second spool is provided with guide cup, and described guide cup is hollow cup-shaped, and the bottom has through hole, and its outer wall matches with the inwall of the hollow cylindrical of described second spool.
8, emulsifiable solution medium large flow safety valve according to claim 6, it is characterized in that, described second spool is provided with damper, described damper run through and described interlayer on through hole and described first liquid entering hole between, and described damper has through hole in the axial direction.
9, emulsifiable solution medium large flow safety valve according to claim 3 is characterized in that, the described second liquid entering hole place is provided with joint, is provided with sealing gasket between the end of described second spool and the described joint, and described sealing gasket is a soft seal.
10, emulsifiable solution medium large flow safety valve according to claim 1 is characterized in that, the stroke of described first spool is 1～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101027167A CN101275685B (en) | 2008-03-25 | 2008-03-25 | Emulsifiable solution medium large flow safety valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101027167A CN101275685B (en) | 2008-03-25 | 2008-03-25 | Emulsifiable solution medium large flow safety valve |
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| CN101275685A true CN101275685A (en) | 2008-10-01 |
| CN101275685B CN101275685B (en) | 2010-06-02 |
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| CN2008101027167A Active CN101275685B (en) | 2008-03-25 | 2008-03-25 | Emulsifiable solution medium large flow safety valve |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101858450A (en) * | 2010-06-13 | 2010-10-13 | 上海乐高压缩机有限公司 | Safety valve |
| WO2011079891A1 (en) * | 2009-12-30 | 2011-07-07 | Robert Bosch Gmbh | Valve assembly with adjustable spring preload and tool kit for adjusting the spring preload |
| CN103363170A (en) * | 2012-04-06 | 2013-10-23 | 重庆博张机电设备有限公司 | Pressure regulating valve |
| CN104235446A (en) * | 2014-08-01 | 2014-12-24 | 北京天地玛珂电液控制系统有限公司 | Safety valve with pressure compensation function |
| CN104500797A (en) * | 2014-12-26 | 2015-04-08 | 纽威石油设备（苏州）有限公司 | Underwater exhaust valve |
| CN104235446B (en) * | 2014-08-01 | 2017-01-04 | 北京天地玛珂电液控制系统有限公司 | A kind of relief valve with pressure compensation |
| CN111336148A (en) * | 2020-03-24 | 2020-06-26 | 北京天地玛珂电液控制系统有限公司 | Valve sleeve, valve core assembly and reversing valve |
| CN113404522A (en) * | 2021-07-26 | 2021-09-17 | 郑州煤机综机设备有限公司 | Anti-expansion valve plug of hydraulic support upright post |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4237769A (en) * | 1978-04-03 | 1980-12-09 | Commercial Shearing, Inc. | Relief valves and mine props incorporating the same |
| CN2032653U (en) * | 1987-12-02 | 1989-02-15 | 煤炭科学研究院太原分院 | Three-purpose high pressure valve |
| GB2274325B (en) * | 1993-01-13 | 1996-04-03 | Meco Mining Equip | A yield valve |
| CN2791254Y (en) * | 2005-01-24 | 2006-06-28 | 洪凌海 | Safety valve for nominal pressure 40MPa |
| CN2898509Y (en) * | 2005-12-31 | 2007-05-09 | 邢鲁辉 | Superpressure stop safety valve |
| CN2903377Y (en) * | 2006-04-16 | 2007-05-23 | 刘其峥 | High flow rate hydraulic safety valve |
-
2008
- 2008-03-25 CN CN2008101027167A patent/CN101275685B/en active Active
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011079891A1 (en) * | 2009-12-30 | 2011-07-07 | Robert Bosch Gmbh | Valve assembly with adjustable spring preload and tool kit for adjusting the spring preload |
| CN102770669A (en) * | 2009-12-30 | 2012-11-07 | 罗伯特·博世有限公司 | Valve assembly with adjustable spring preload and tool kit for adjusting the spring preload |
| CN101858450A (en) * | 2010-06-13 | 2010-10-13 | 上海乐高压缩机有限公司 | Safety valve |
| CN103363170A (en) * | 2012-04-06 | 2013-10-23 | 重庆博张机电设备有限公司 | Pressure regulating valve |
| CN103363170B (en) * | 2012-04-06 | 2015-08-19 | 重庆博张机电设备有限公司 | Pressure regulator valve |
| CN104235446A (en) * | 2014-08-01 | 2014-12-24 | 北京天地玛珂电液控制系统有限公司 | Safety valve with pressure compensation function |
| CN104235446B (en) * | 2014-08-01 | 2017-01-04 | 北京天地玛珂电液控制系统有限公司 | A kind of relief valve with pressure compensation |
| CN104500797A (en) * | 2014-12-26 | 2015-04-08 | 纽威石油设备（苏州）有限公司 | Underwater exhaust valve |
| CN111336148A (en) * | 2020-03-24 | 2020-06-26 | 北京天地玛珂电液控制系统有限公司 | Valve sleeve, valve core assembly and reversing valve |
| CN113404522A (en) * | 2021-07-26 | 2021-09-17 | 郑州煤机综机设备有限公司 | Anti-expansion valve plug of hydraulic support upright post |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101275685B (en) | 2010-06-02 |
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Address after: 100013, room 5, Tiandi building, 102 Youth Road, Chaoyang District, Beijing, Hepingli Patentee after: Beijing Tianma Zhikong Technology Co.,Ltd. Address before: 100013, room 5, Tiandi building, 102 Youth Road, Chaoyang District, Beijing, Hepingli Patentee before: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. |