CN101592208A - Built-in hydraulic damper - Google Patents
Built-in hydraulic damper Download PDFInfo
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- CN101592208A CN101592208A CNA2009100326645A CN200910032664A CN101592208A CN 101592208 A CN101592208 A CN 101592208A CN A2009100326645 A CNA2009100326645 A CN A2009100326645A CN 200910032664 A CN200910032664 A CN 200910032664A CN 101592208 A CN101592208 A CN 101592208A
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Abstract
The present invention relates to a kind of built-in hydraulic damper, comprise oil cylinder, fuel reserve tank and piston rod, be provided with piston in the oil cylinder, piston rod one end and piston are fixed, and an other end is provided with the head that is connected with pipe fitting, and oil cylinder one end is provided with load-bearing member and is connected afterbody, described oil cylinder is communicated with fuel reserve tank, it is characterized in that: be provided with poppet valve between described oil cylinder and the fuel reserve tank.Advantage of the present invention is as follows: adopt the present invention to increase the carrying scope, structure of the present invention is dwindled with mechanical physical dimension relatively, and is not easy to take place stuck phenomenon; Center of gravity of the present invention overlaps with being subjected to the line of force, and piston is provided with two guidance tapes, and steering capability is good, and Sealing is protected, and oil cylinder is protected, long service life.
Description
Technical field
The present invention relates to a kind of damping device, especially a kind of built-in hydraulic damper.
Background technique
Generally set up a large amount of pipelines in nuclear power plant, thermal power plant, production scene, chemical plant.Because there are cold conditions, hot, full power and non-full power state of operation in nuclear power plant, thermal power plant, chemical plant, so the pipe temperature of equipment and connection device changes, and variation of temperature will inevitably cause that pipeline expands with heat and contract with cold.When pipeline be subjected to happening suddenly load (as: water hammer, steam hammer, safety valve steam discharge, broken pipe knockout press, the bursting of boilers, earthquake, wind carries, the external thing etc. that flies) do the time spent, pipeline can produce violent vibration because of the impulsive load that is happened suddenly, might cause pipeline impaired, cause serious consequence.Existing mechanical damper a kind of protective gear that comes to this, when pipeline or the thermal expansion of equipment low speed, damper produces very little damping force to pipeline or equipment; When pipeline or equipment were subjected to impacting, damper will produce very big resistance, stoped pipeline or equipment moving, limited its displacement, absorbed vibration simultaneously, and the restriction amplitude plays the purpose of protection pipeline or equipment.And the damper that the using time tool is makes the line of force that is subjected to of centre-of gravity shift damper easily,, no guidance tape in the oil cylinder, guidance quality is poor, thereby causes the oil cylinder inner seal liner to damage easily, and in addition, oil cylinder inside is also damaged easily, reduction in working life (as Fig. 1).
Summary of the invention
In order to overcome above defective, the technical problem to be solved in the present invention is: the built-in hydraulic damper that proposes a kind of vibration damping, anti-vibration.
The technical solution adopted in the present invention is: a kind of built-in hydraulic damper, comprise oil cylinder, fuel reserve tank and piston rod, be provided with piston in the oil cylinder, piston rod one end and piston are fixed, and an other end is provided with the head that is connected with pipe fitting, and oil cylinder one end is provided with load-bearing member and is connected afterbody, described oil cylinder is communicated with fuel reserve tank, is provided with poppet valve between described oil cylinder and the fuel reserve tank.
According to another preferred embodiment, built-in hydraulic damper comprises that further described poppet valve has spool and spring, and described spool is connected by spring with the oil cylinder housing, and described spool sidewall is provided with the lifting valve opening.
According to another preferred embodiment, built-in hydraulic damper comprises that further described spool top is provided with throttle bore.
According to another preferred embodiment, built-in hydraulic damper comprises that further described oil cylinder two ends are provided with poppet valve.
According to another preferred embodiment, built-in hydraulic damper comprises that further described poppet valve is positioned at oil cylinder.
According to another preferred embodiment, built-in hydraulic damper comprises that further described piston is provided with two guidance tapes.
According to another preferred embodiment, built-in hydraulic damper comprises that further described oil cylinder, piston and piston rod adopt Austenitic Stainless Steel to make.
The invention has the beneficial effects as follows: adopt the present invention to increase the carrying scope, structure of the present invention is dwindled with mechanical physical dimension relatively, and is not easy to take place stuck phenomenon; Center of gravity of the present invention overlaps with being subjected to the line of force, and piston is provided with two guidance tapes, and steering capability is good, and Sealing is protected, and oil cylinder is protected, long service life.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a mechanical structural representation in the prior art;
Fig. 2 is the structural representation of the preferred embodiments of the present invention;
Fig. 3 is the fundamental diagram of the preferred embodiment of the present invention;
Among the figure: 1, oil cylinder, 2, fuel reserve tank, 3, piston rod, 4, piston, 41, guidance tape, 5, head, 6, afterbody, 7, poppet valve, 71, spool, 72, spring, 8, promote valve opening, 9, throttle bore, 10, pipe fitting, 11, load-bearing member.
Embodiment
The present invention is further detailed explanation with preferred embodiment in conjunction with the accompanying drawings now.These accompanying drawings are the schematic representation of simplification, basic structure of the present invention only is described in a schematic way, so it only show the formation relevant with the present invention.
Shown in Fig. 2-3, a kind of built-in hydraulic damper, comprise oil cylinder 1, fuel reserve tank 2 and piston rod 3 are provided with piston 4 in the oil cylinder 1, piston rod 3 one ends and piston 4 are fixing, an other end is provided with the head 5 that is connected with pipe fitting 10, oil cylinder 1 one ends are provided with load-bearing member 11 and are connected afterbody 6, and described oil cylinder 1 is communicated with fuel reserve tank 2, are provided with poppet valve 7 between described oil cylinder 1 and the fuel reserve tank 2.And poppet valve 7 has spool 71 and spring 72, and described spool 71 is connected by spring 72 with oil cylinder 1 housing, and described spool 71 sidewalls are provided with and promote valve opening 8, and described spool 71 tops are provided with throttle bore 9.And described poppet valve 7 is preferably placed in the oil cylinder 1.In addition, described piston 4 is provided with two guidance tapes 41, and according to built-in hydraulic damper use occasion requirement, oil cylinder, 1 piston 4 and piston rod 3 adopt Austenitic Stainless Steel to make.
The built-in hydraulic damper working principle of anti-vibration is as follows:
1, under nominal situation be, pipeline rise or descend speed very little, be not enough to make spool 71 to overcome the active force of spring 72 and make spool 71 close, thereby can make hydraulic oil pass from promoting in the valve opening 8.
2, when the pipeline temporary impact is very big, the speed that pipeline rises or descends is very big, make spool 71 overcome the active force of spring 72 and make spool 71 close, hydraulic oil is merely able to flow through from throttle bore 9, because throttle bore 9 is very little, thereby in oil hydraulic cylinder, form hydraulic damping power, reach the purpose of buffering, antivibration.
As Fig. 3 and the built-in hydraulic damper working principle of anti-safety valve steam discharge counter-force is as follows:
1, under nominal situation be, pipeline rise or descend speed very little, the power of doing that is not enough to make spool 71 overcome spring 72 with and make spool 71 close, thereby can make hydraulic oil in lifting valve opening 8, pass.
2, during the safety valve steam discharge, the speed that pipeline rises or descends is very big, makes spool 71 overcome the active force of spring 72 and makes spool 71 close, because spool 71 is not established throttle bore 9, hydraulic medium can't flow, thereby realizes lasting pulling force or the pressure of damper to pipeline.
With above-mentioned foundation desirable embodiment of the present invention is enlightenment, and by above-mentioned description, the related work personnel can carry out various change and modification fully in the scope that does not depart from this invention technological thought.The technical scope of this invention is not limited to the content on the specification, must determine its technical scope according to the claim scope.
Claims (7)
1, a kind of built-in hydraulic damper, comprise oil cylinder, fuel reserve tank and piston rod, be provided with piston in the oil cylinder, piston rod one end and piston are fixed, and an other end is provided with the head that is connected with pipe fitting, and oil cylinder one end is provided with load-bearing member and is connected afterbody, described oil cylinder is communicated with fuel reserve tank, it is characterized in that: be provided with poppet valve between described oil cylinder and the fuel reserve tank.
2, built-in hydraulic damper as claimed in claim 1 is characterized in that: described poppet valve has spool and spring, and described spool is connected by spring with the oil cylinder housing, and described spool sidewall is provided with the lifting valve opening.
3, built-in hydraulic damper as claimed in claim 2 is characterized in that: described spool top is provided with throttle bore.
4, as any described built-in hydraulic damper of claim 1-3, it is characterized in that: described oil cylinder two ends are provided with poppet valve.
5, as any described built-in hydraulic damper of claim 1-3, it is characterized in that: described poppet valve is positioned at oil cylinder.
6, built-in hydraulic damper as claimed in claim 1 is characterized in that: described piston is provided with two guidance tapes.
7, built-in hydraulic damper as claimed in claim 1 is characterized in that: described oil cylinder, piston and piston rod adopt Austenitic Stainless Steel to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100326645A CN101592208A (en) | 2009-06-30 | 2009-06-30 | Built-in hydraulic damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100326645A CN101592208A (en) | 2009-06-30 | 2009-06-30 | Built-in hydraulic damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101592208A true CN101592208A (en) | 2009-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100326645A Pending CN101592208A (en) | 2009-06-30 | 2009-06-30 | Built-in hydraulic damper |
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| CN (1) | CN101592208A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345700A (en) * | 2011-09-15 | 2012-02-08 | 常州格林电力机械制造有限公司 | Nuclear-grade large equipment damper |
| CN104385089A (en) * | 2014-10-10 | 2015-03-04 | 西安理工大学 | Aviation engine blade grinding-wheel grinding machine tailstock |
| CN106762944A (en) * | 2016-12-28 | 2017-05-31 | 哈尔滨通用液压机械制造有限公司 | A kind of damping oil cylinder |
| CN108533873A (en) * | 2018-07-07 | 2018-09-14 | 扬州东方吊架有限公司 | A kind of temperature control damping stabilising arrangement |
| CN112283280A (en) * | 2020-09-29 | 2021-01-29 | 中国原子能科学研究院 | Hydraulic damper applied to fast reactor sodium piping system |
| CN114810910A (en) * | 2022-04-26 | 2022-07-29 | 江苏友恒机械有限公司 | Automatic reset hydraulic damper |
-
2009
- 2009-06-30 CN CNA2009100326645A patent/CN101592208A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102345700A (en) * | 2011-09-15 | 2012-02-08 | 常州格林电力机械制造有限公司 | Nuclear-grade large equipment damper |
| CN104385089A (en) * | 2014-10-10 | 2015-03-04 | 西安理工大学 | Aviation engine blade grinding-wheel grinding machine tailstock |
| CN104385089B (en) * | 2014-10-10 | 2016-08-24 | 西安理工大学 | Blade of aviation engine emery wheel tail seat of grinding machine |
| CN106762944A (en) * | 2016-12-28 | 2017-05-31 | 哈尔滨通用液压机械制造有限公司 | A kind of damping oil cylinder |
| CN108533873A (en) * | 2018-07-07 | 2018-09-14 | 扬州东方吊架有限公司 | A kind of temperature control damping stabilising arrangement |
| CN112283280A (en) * | 2020-09-29 | 2021-01-29 | 中国原子能科学研究院 | Hydraulic damper applied to fast reactor sodium piping system |
| CN114810910A (en) * | 2022-04-26 | 2022-07-29 | 江苏友恒机械有限公司 | Automatic reset hydraulic damper |
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Application publication date: 20091202 |