CN102364168A - Bidirectional internal sealing structure of mechanical vibrator - Google Patents
Bidirectional internal sealing structure of mechanical vibrator Download PDFInfo
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- CN102364168A CN102364168A CN2011103587659A CN201110358765A CN102364168A CN 102364168 A CN102364168 A CN 102364168A CN 2011103587659 A CN2011103587659 A CN 2011103587659A CN 201110358765 A CN201110358765 A CN 201110358765A CN 102364168 A CN102364168 A CN 102364168A
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Abstract
The invention relates to a bidirectional internal sealing structure of a mechanical vibrator. The bidirectional internal sealing structure of the mechanical vibrator comprises a spring, a piston and a Y-shaped sealing ring, wherein the piston is arranged on one side of the spring and is in tight contact connection with the spring; an annular groove and a rectangular groove are formed on the piston; the Y-shaped sealing ring is arranged in the rectangular groove of the piston; the Y-shaped sealing ring is a bidirectional Y-shaped sealing ring consisting of two Y-shaped sealing rings; directions of lips of the two Y-shaped sealing rings are opposite; and the bidirectional Y-shaped sealing ring is sealed at the piston to achieve a bidirectional self-sealing effect, so as to improve a sealing effect of the bidirectional Y-shaped sealing ring between the piston and a piston sleeve. The bidirectional internal sealing structure of the mechanical vibrator has the main advantages that: the bidirectional Y-shaped sealing ring, a piston ring, the spring and other components act together to form a high-efficiency internal sealing system, so that the internal sealing performance of the mechanical vibrator is effectively improved and the service life of the mechanical vibrator is prolonged.
Description
Technical field
The present invention relates to a kind of two-way inner seal structure of mechanical rapping apparatus.
Background technique
The cleaning eighties in 20th century in the world, safety, the low clean gas technology of polluting have obtained development fast.Gasification is a gaseous products with solid fuel conversion exactly, demonstrates fully the value of coal resources, improves the comprehensive utilization ratio of coal resources, reduces with the pollutant emission in the coal process.Coal will be long-term as main primary energy in energy consumption structure in " coal is many, oil is scarce " resource distribution decision of China.Utilize Coal Gasification Technology protection environment to economize on resources to cause and show great attention to, spelling out clean coal technology in country's " eight or five " the ninth five-year plan is the important means that rational energy effectively develops resource, should greatly develop.In the nineties later stage, China also begins engineering practice is put in the utilization of clean coal technology.Through to the key point-----of the nucleus equipment coal gasifier of this production line automatically the rapping-off-ash device applied for patent of invention " mechanical rapping apparatus " in 2005 as the research and development object, number of patent application is CN200510018677.9.During gasification oven work, the high temperature and high pressure gas of generation makes the piston place seal element in the piston waveguide tube bear very big pressure, is unfavorable for sealing.Therefore, feed nitrogen in piston waveguide tube inner spring side, the high 0.5 ~ 0.6MPa of its pressure ratio gasification furnace inner gas pressure, to reduce the pressure that piston place seal element is born, this moment, pressure was the poor of pressure at both sides.Because the existence of pressure difference, a part of nitrogen might enter into gasification oven inside, thereby reduces the purity of available gas in the gasification oven.More serious is that after the low temperature nitrogen of leakage and the internal high temperature process gas mix, easy generation dew point corrosion very easily causes the inefficacy of Sealing and whole mechanical rapping apparatus.
Summary of the invention
Technical problem to be solved by this invention is to propose to above-mentioned existing technology a kind of two-way inner seal structure of mechanical rapping apparatus; Sealing in each the parts acting in conjunction of sealing structure forms has effectively solved problems such as the installation of rapping apparatus, interior sealing and life-saving.
The present invention solves the problems of the technologies described above the technological scheme that is adopted to be: a kind of two-way inner seal structure of mechanical rapping apparatus; Include spring, piston and y-type seal ring; Described piston is installed in spring one side and closely contacts with spring and is connected, and piston is provided with annular groove and rectangle groove; Y-type seal ring is installed in the rectangle groove of piston, it is characterized in that the two-way y-type seal ring of described y-type seal ring for being made up of two y-type seal rings, and its lip is towards opposite direction; Sealing forms the bidirectional self-sealing effect to two-way y-type seal ring at the piston place, to improve the sealing effect of two-way y-type seal ring between piston and piston sleeve.
Press such scheme, also include 4 piston rings, it is installed in the annular groove on the piston.
Press such scheme, described spring is in squeezed state when initial.
Single y-type seal ring of the present invention can only unidirectionally work; During mechanical rapping apparatus work, adopt certain pressure nitrogen (than gasification furnace inner gas pressure high 0.5 ~ 0.6MPa) available gas in the gasification oven to be sealed, in order further to prevent the interior leakage of nitrogen; On piston, arrange another y-type seal ring; Lip constitutes two-way y-type seal ring towards the nitrogen side, realizes the two way sealed of gas.
When the present invention's available gas in preventing gasification oven leaks; It is (generally big by 0.5 ~ 0.6MPa) than gasification oven internal pressure in piston waveguide tube, to feed certain pressure nitrogen; In the process of piston micro-displacement; Rely on the pressure difference of gas, sealing between a side of piston ring excircle face and piston ring and annular groove, forming; Because the high temperature in the gasification oven and the friction of piston and wall, make the temperature of piston than higher, conduct to piston sleeve through the heat of piston ring piston, strengthen heat radiation, promptly play cooling action, protect piston; In addition, piston ring also plays supporting role; Piston ring remains on piston in the piston sleeve, prevents that piston from directly contacting with the piston sleeve tube wall, guarantees the smooth-going motion of piston, reduces surface friction drag, reduces the frictionally damage of structure, and increases energy transfer efficiency.
Major advantage of the present invention is: two-way y-type seal ring efficiently solves the interior sealing problem of mechanical rapping apparatus; Avoided nitrogen dew point corrosion to take place to reveal and produce at piston and piston sleeve sealing part; Effectively protected seal element, the working life of prolonged mechanical rapping apparatus; Piston ring forms sealing at piston with the piston waveguide tube contacting point, further strengthens the interior sealability of structure; Piston ring set can effectively reduce piston and piston waveguide tube friction on piston, reduce frictionally damage, the working life of extending structure; Because spring can compress, when allowing to install certain surplus is arranged, greatly facilitate the installation of guide; In the time of in working order, pretightening force makes the trip rod and the piston rod that produce displacement recover the origin-location again, has kept gasification oven wall, trip rod and piston rod three closely to contact; Increased the transmission efficiency of energy, and because spring compressible can reduce the power on spring and the piston waveguide tube that acts on greatly; Effectively protected rapping apparatus, prolonged the life-span of rapping apparatus, spring is when the compression pretension; Also can make piston internal surface and piston rod end keep closely contacting, form the interior sealing between piston internal surface and piston rod.Therefore, the acting in conjunction of three parts such as two-way y-type seal ring, piston ring and spring has formed interior efficiently sealing system, the interior sealability and the working life of effectively improving mechanical rapping apparatus.
Description of drawings
Fig. 1 is applied in the embodiment's on the mechanical rapping apparatus sectional structure chart for the present invention;
Fig. 2 is among Fig. 1
IPartial enlarged drawing;
Fig. 3 is that sectional view is installed in the part of two-way y-type seal ring;
Among the figure 1, piston rod, 2, spring, 3, piston, 4, piston ring, 5, two-way y-type seal ring, 6, piston sleeve, 7, piston waveguide tube, 8, trip rod, 9, rectangle groove.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
In Fig. 1,2; The two-way inner seal structure of mechanical rapping apparatus mainly includes spring 2, piston 3, piston ring 4, two-way y-type seal ring 5, and spring 2 is installed in the bottom of piston waveguide tube 7, by means of the compressibility of spring; When piston waveguide tube 7 is installed; Allow spring 2 that certain compression zone is arranged, very convenient when mounted, simply be easy to many than fixed installation; Piston is installed in the piston sleeve 6, and it is installed in spring left side and closely contacts with spring and is connected.Because the pretightening force effect lower piston internal surface and piston rod 1 end face of spring 2 closely compress, play the interior seal action of this position in working order down; 4 piston rings 4 are installed in respectively in 4 annular grooves of piston 3 intermediate portions; And two-way y-type seal ring 5 is installed in the rectangle groove of piston; Described two-way y-type seal ring is made up of two y-type seal rings; Its lip is towards opposite direction, and (after high 0.5 ~ 0.6MPa) sealing of its pressure ratio gasification furnace inner gas pressure, the self-tightening of two-way y-type seal ring 5 can effectively prevent the interior leakage of nitrogen the gasification furnace gas being adopted certain pressure nitrogen; Piston 3 outer surfaces also have piston ring 4 with the sealing of 6 of piston sleeves; In the process of piston micro-displacement, rely on the pressure difference of gas, sealing between a side of piston ring face and piston sleeve 6 and piston ring and annular groove, forming; Moreover, piston ring 4 also can play conductive force with piston 3 because the heat that furnace heat transmission and self friction produce is delivered on the piston waveguide tube 7 efficiently.Simultaneously, piston ring 4 is also played a supporting role, and piston 3 is remained in the piston sleeve 6, prevents and piston sleeve 6 wall direct friction, reduces frictional force, the energization transmission efficiency.Mechanical rapping apparatus separates trip rod 8 with piston rod 1, the big displacement in the energy transfer process is become the micro-displacement of piston rod 1.Under the rapping apparatus operating conditions, spring 2 spring of squeezed state when mounted makes that keeping tight between gasification oven wall, trip rod 8 and piston rod 1 three contacts the transmission efficiency of enhanced energy.In working order down, the reciprocal micro-displacement that carries out in 1 cycle of piston rod moves, and compared to fixed installation, spring 2 can reduce the impact force of this to-and-fro motion to rapping apparatus greatly, and spring 2 allows this reciprocating existence.In the whole service process, greatly protect rapping apparatus, prolonged its working life.
In Fig. 3, two-way y-type seal ring 5 is arranged in the rectangle groove 9.Y-type seal ring relies on its open lip limit to be close to sealing surface, and during installation, lip limit and sealing surface form certain contact pressure.During work, because gas pressure increases, the lip limit contacts tightr with sealing surface, so better tightness.And the employing two way sealed, can overcome the shortcoming that single y-type seal ring can only one-way sealing.When single y-type seal ring existed, because nitrogen-sealed pressure reduction, nitrogen can be to the gasification oven internal leakage; Be prone to seal element is caused dew point corrosion; Cause the inefficacy and the structural damage of seal element, and two-way y-type seal ring can effectively prevent the leakage of nitrogen, strengthen protection seal element; Available gas and nitrogen to gasification oven all have excellent sealing, prevent dew point corrosion.
The present invention seals in guaranteeing rapping apparatus and prevents in the seal element corrosion; Being convenient to practice of construction installs; Reduce the friction between each parts, increased the transmission efficiency of energy, strengthen the piston heat transfer; Reduce rapping apparatus suffered spring-back force under high temperature and high pressure condition greatly, prolonged working life.
Claims (3)
1. the two-way inner seal structure of a mechanical rapping apparatus includes spring (2), piston (3) and y-type seal ring (5), and described piston is installed in spring one side and closely contacts with spring and is connected, and piston is provided with annular groove and rectangle groove; Y-type seal ring (5) is installed in the rectangle groove of piston, it is characterized in that the two-way y-type seal ring of described y-type seal ring for being made up of two y-type seal rings, and its lip is towards opposite direction; Sealing forms the bidirectional self-sealing effect to two-way y-type seal ring at the piston place, to improve the sealing effect of two-way y-type seal ring between piston and piston sleeve.
2. by the two-way inner seal structure of the described mechanical rapping apparatus of claim 1, it is characterized in that also including 4 piston rings, it is installed in the annular groove on the piston.
3. by the two-way inner seal structure of claim 1 or 2 described mechanical rapping apparatus, it is characterized in that described spring is in squeezed state when initial.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103587659A CN102364168A (en) | 2011-11-14 | 2011-11-14 | Bidirectional internal sealing structure of mechanical vibrator |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011103587659A CN102364168A (en) | 2011-11-14 | 2011-11-14 | Bidirectional internal sealing structure of mechanical vibrator |
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| CN102364168A true CN102364168A (en) | 2012-02-29 |
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| CN2011103587659A Pending CN102364168A (en) | 2011-11-14 | 2011-11-14 | Bidirectional internal sealing structure of mechanical vibrator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920595A (en) * | 2014-04-11 | 2014-07-16 | 武汉工程大学 | Mechanical vibrator with safety interlocking device |
| CN107597442A (en) * | 2017-09-07 | 2018-01-19 | 南京中高知识产权股份有限公司 | A kind of force-guided stem for ash removal equipment for flapping |
| CN110005816A (en) * | 2019-03-29 | 2019-07-12 | 清华大学 | A kind of high pressure reciprocation sealing structure |
| CN113074250A (en) * | 2021-04-29 | 2021-07-06 | 漳州明建机械设备制造有限公司 | Fluid ultrahigh pressure piston and bidirectional sealing ring |
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| JPH0590043U (en) * | 1992-05-12 | 1993-12-07 | 太陽鉄工株式会社 | Dust seal device for fluid pressure cylinder |
| CN2854048Y (en) * | 2005-11-07 | 2007-01-03 | 江苏金石油气井口科技有限公司 | Y-shape self-fastening sealing device |
| US20070052181A1 (en) * | 2005-09-08 | 2007-03-08 | Nok Corporation | Backup ring |
| CN101502828A (en) * | 2009-02-26 | 2009-08-12 | 武汉工程大学 | Sealing system of mechanical rapping apparatus |
| JP2010054021A (en) * | 2008-08-29 | 2010-03-11 | Nok Corp | Sealing system |
| CN202349198U (en) * | 2011-11-14 | 2012-07-25 | 武汉工程大学 | Bidirectional internal seal structure of mechanical vibrator |
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2011
- 2011-11-14 CN CN2011103587659A patent/CN102364168A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0590043U (en) * | 1992-05-12 | 1993-12-07 | 太陽鉄工株式会社 | Dust seal device for fluid pressure cylinder |
| US20070052181A1 (en) * | 2005-09-08 | 2007-03-08 | Nok Corporation | Backup ring |
| CN2854048Y (en) * | 2005-11-07 | 2007-01-03 | 江苏金石油气井口科技有限公司 | Y-shape self-fastening sealing device |
| JP2010054021A (en) * | 2008-08-29 | 2010-03-11 | Nok Corp | Sealing system |
| CN101502828A (en) * | 2009-02-26 | 2009-08-12 | 武汉工程大学 | Sealing system of mechanical rapping apparatus |
| CN202349198U (en) * | 2011-11-14 | 2012-07-25 | 武汉工程大学 | Bidirectional internal seal structure of mechanical vibrator |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920595A (en) * | 2014-04-11 | 2014-07-16 | 武汉工程大学 | Mechanical vibrator with safety interlocking device |
| CN107597442A (en) * | 2017-09-07 | 2018-01-19 | 南京中高知识产权股份有限公司 | A kind of force-guided stem for ash removal equipment for flapping |
| CN110005816A (en) * | 2019-03-29 | 2019-07-12 | 清华大学 | A kind of high pressure reciprocation sealing structure |
| CN113074250A (en) * | 2021-04-29 | 2021-07-06 | 漳州明建机械设备制造有限公司 | Fluid ultrahigh pressure piston and bidirectional sealing ring |
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Application publication date: 20120229 |