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CN109630678A - A high temperature dynamic sealing device for combustible and explosive gas - Google Patents

A high temperature dynamic sealing device for combustible and explosive gas Download PDF

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Publication number
CN109630678A
CN109630678A CN201811636337.6A CN201811636337A CN109630678A CN 109630678 A CN109630678 A CN 109630678A CN 201811636337 A CN201811636337 A CN 201811636337A CN 109630678 A CN109630678 A CN 109630678A
Authority
CN
China
Prior art keywords
combustible
explosive gas
dynamic sealing
connector
sealing device
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.)
Pending
Application number
CN201811636337.6A
Other languages
Chinese (zh)
Inventor
陈�峰
刘大宝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Aerospace Innovation Patent Investment Center (limited Partnership)
China Aerospace Academy Of Systems Science And Engineering
Cking Home Key Investment Group Co ltd
Inner Mongolia Dongyuan Scien Tech Co ltd
Qinhuangdao Hongxun Technology Development Co ltd
Aerospace Shenjie Beijing Technology Development Co ltd
China Academy of Aerospace Aerodynamics CAAA
Original Assignee
Beijing Aerospace Innovation Patent Investment Center (limited Partnership)
China Aerospace Academy Of Systems Science And Engineering
Cking Home Key Investment Group Co ltd
Inner Mongolia Dongyuan Scien Tech Co ltd
Qinhuangdao Hongxun Technology Development Co ltd
Aerospace Shenjie Beijing Technology Development Co ltd
China Academy of Aerospace Aerodynamics CAAA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Aerospace Innovation Patent Investment Center (limited Partnership), China Aerospace Academy Of Systems Science And Engineering, Cking Home Key Investment Group Co ltd, Inner Mongolia Dongyuan Scien Tech Co ltd, Qinhuangdao Hongxun Technology Development Co ltd, Aerospace Shenjie Beijing Technology Development Co ltd, China Academy of Aerospace Aerodynamics CAAA filed Critical Beijing Aerospace Innovation Patent Investment Center (limited Partnership)
Priority to CN201811636337.6A priority Critical patent/CN109630678A/en
Publication of CN109630678A publication Critical patent/CN109630678A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/047—Metallic bellows
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
    • F16J15/08—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing
    • F16J15/0806—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with exclusively metal packing characterised by material or surface treatment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J3/00—Diaphragms; Bellows; Bellows pistons
    • F16J3/04—Bellows
    • F16J3/048—Bellows with guiding or supporting means

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mechanical Sealing (AREA)

Abstract

A high-temperature dynamic sealing device for combustible explosive gas belongs to the technical field of mechanical sealing. The invention comprises a front flange, a welding corrugated pipe, a graphite bearing, a spacing ring, a guide rod and a rear flange. The front flange copper gasket seal is arranged for connecting a high-temperature seal of equipment communicated with combustible explosive gas, so that the combustible explosive gas is prevented from leaking; the high-temperature dynamic sealing function is realized by the characteristics of compressible extension, high temperature resistance and the like of the welded corrugated pipe. The high-temperature dynamic sealing device disclosed by the invention has the characteristics of simple and reasonable structure, low leakage rate, high temperature resistance, pressure resistance, corrosion resistance, strong mechanical property and long service life.

Description

A kind of high temperature dynamic sealing device for flammable explosion hazard gases
Technical field
The present invention relates to a kind of high temperature dynamic sealing devices for flammable explosion hazard gases, belong to technical field of mechanical.
Background technique
Flammable explosion hazard gases static seal is easy in actual industrial production operation, for moveable flammable explosion hazard gases Sealing device, need to prevent gas from leaking under the premise of movement, will between each component of device once structure has activity Gap is generated, and then the leakproofness that will cause device is larger, the present apparatus guarantees device mobility from this angle, full Sufficient business demand, while guaranteeing that gas does not leak, and high temperature can be carried.
Existing movable sealing structure, such as piston sealing structure, the pressure for usually sealing liquid are no more than 30MPa, and temperature is not More than 80 DEG C, therefore, ring structure generally uses molded sealing ring, ties in cold isostatic press with the sealing of booster plunger is applied In structure, sealed pressure can reach 200MPa, but sealing medium temperature is no more than 80 DEG C.Meanwhile sealing structure is complex, dimension Shield property is poor, and manufacturing cost is high.
Summary of the invention
Technical problem solved by the present invention is having overcome the deficiencies of the prior art and provide a kind of for flammable explosion hazard gases High temperature dynamic sealing device, dynamic sealing can be realized along sliding connector constriction device free to slide of leading by setting, solving can Fire sealing problem of the explosion hazard gases under moving condition, hot environment.
The technical solution of the invention is as follows: a kind of high temperature dynamic sealing device for flammable explosion hazard gases, including equipment Connector, constriction device, cunning lead connector and Caudal connectors；The both ends of the constriction device are respectively fixedly connected with equipment connection Part and Caudal connectors, the equipment connector are fixedly connected on the gas vent of flammable explosion hazard gases equipment, the tail portion Connector and constriction device are tightly connected；The cunning is led connector one end and is fixedly connected on equipment connector, and the other end is pierced by tail The through-hole being arranged on portion's connector enables Caudal connectors to slide on connector in sliding lead, drives the constriction device reciprocal Movement.
Further, the cunning leads the guide rod that connector is rod-like structure.
Further, the guide rod is vertical with the installation direction of equipment connector or at certain acute angle.
Further, the acute angle is 30 °~60 °.
Further, further include between being fixedly mounted on sliding lead on connector ring and be fixedly mounted on it is described between axis on ring It holds, the cunning leads connector across bearing, leads connector to cunning by bearing and is fixed.
Further, the bearing is graphite bearing.
Further, the quantity of the guide rod is not less than 2, is equidistantly fixedly mounted on equipment connector and connects with tail portion On part.
Further, the constriction device is bellows, material Inconel625.
Further, the equipment connector and flammable explosion hazard gases equipment are tightly connected by copper packing.
Further, the cunning leads connector and is threadedly coupled or welds with equipment connector.
The advantages of the present invention over the prior art are that:
The present invention solves elevated-temperature seal characteristic of the flammable explosion hazard gases under moving condition, by flange, guide rod and Bellows structure can carry out compression elongation so that device can be moved as needed, and be able to bear nearly 800 ° of High Temperature Gas Body, high intensity and 1,000,000 times or more tired service life.The configuration of the present invention is simple, mechanical performance is strong, and the service life is long.
Detailed description of the invention
Fig. 1 is sealing device structure composition schematic diagram of the present invention.
Specific embodiment
A kind of high temperature dynamic sealing device for flammable explosion hazard gases, as shown in Figure 1.
Structure of the invention composition is as follows: including forward flange 1, graphite bearing 2, bellows 3, ring 4, guide rod 5 and rear flange 6；
5 both ends of guide rod are connected with forward flange 10, rear flange 6 respectively, connect wherein being threadably secured with forward flange 1, Rear end passes through the through-hole connection on rear flange 6；
3 both ends of bellows are fixedly connected with forward flange 1, rear flange 6 respectively, can be made on guide rod 5 with rear flange 6 axial Reciprocating action；
Between graphite bearing 2 is fixed on ring 4, guide rod passes through graphite bearing 2；
Forward flange 1 is connected with flammable explosion hazard gases equipment.
Graphite rod will be housed inside high-temperature sealing device of the present invention and be fixed on rear flange 6, it is close by 1 copper packing of forward flange Envelope is attached to the flammable explosion hazard gases equipment of high temperature, and bellows 3 drives graphite rod in the flammable explosion hazard gases of high temperature with rear flange 6 Make axial reciprocating movement along guide rod 5 in cavity, flammable explosion hazard gases is not revealed under moving condition, hot environment.
As alternative embodiment of the present invention, the guide rod is vertical with the installation direction of equipment connector 1 or at 45 degree of angles.
As alternative embodiment of the present invention, forward flange 1 is sealed by copper packing to be connected with flammable explosion hazard gases equipment.
As alternative embodiment of the present invention, bearing uses graphite bearing 2, high temperature resistant.
As alternative embodiment of the present invention, Inconel625 high temperature resistant is selected in 3 material selection combination actual demand of bellows Material is resistant to nearly 800 degrees Celsius, avoids surplus is excessive from resulting in waste of resources, and tired service life 1,000,000 times or more.
As alternative embodiment of the present invention, according to live actual demand, for the rigidity and with one heart for guaranteeing every section of bellows 3 Degree, avoids directly contacting graphite rod inside bellows 3, the length of every section of bellows is 1.5~2 times of 3 bore of bellows.
Ripple is obtained by 3 bore of design runlength and bellows of welding bellows 3 as alternative embodiment of the present invention The number of segment of pipe 3；The total weight for using welding bellows 3 again, acts on guide rod, guarantees the premise of guide rod without flexing deformation, Bellows 3 is avoided Caton occur in axial action, so that it is determined that the diameter of guide rod.
As alternative embodiment of the present invention, for the service life for guaranteeing bellows 3, in conjunction with its own design feature and material The stretching of the characteristics of material, bellows 3 control in 20% elongation, and compression control is in 60% decrement.
As alternative embodiment of the present invention, under the premise of meeting requirement, guide rod quantity is set as 2, supports bellows While, make that it is more stable when making axial reciprocating action, accuracy is higher.
As alternative embodiment of the present invention, high temperature dynamic sealing device disclosed by the invention is simple and reasonable, and leak rate is low, resistance to High temperature, pressure resistance, anticorrosive, mechanical performance is strong, the advantageous effects of service life length.
Installation method and working principle of the invention are as follows:
After forward flange 1, bellows 3, ring 4 and rear flange 6 are welded to connect, it is packed into graphite bearing 2 on ring 4 and leads to Circlip is crossed to fix；Guide rod 5 is each passed through rear flange 6, graphite bearing 2, is finally fixed on forward flange 1.
Graphite rod will be housed inside the high-temperature sealing device assembled and be fixed on rear flange 6,1 copper packing of forward flange is passed through Sealingly connect to the flammable explosion hazard gases equipment of high temperature, rear flange 6, which is fixed on, can act mechanism end, control can actuating mechanism, after making Flange 6 is acted in axial reciprocating, and bellows 3 drives graphite rod in the cavity of the flammable explosion hazard gases of high temperature also with rear flange 6 Make axial reciprocating movement along guide rod 5, flammable explosion hazard gases is not revealed under moving condition, hot environment, realize high temperature move it is close Envelope.
The content that description in the present invention is not described in detail belongs to the well-known technique of those skilled in the art.

Claims (10)

1.一种用于可燃易爆气体的高温动密封装置，其特征在于：包括设备连接件(1)、收缩装置(3)、滑导连接件(5)和尾部连接件(6)；所述收缩装置(3)的两端分别固定连接设备连接件(1)和尾部连接件(6)，所述设备连接件(1)固定连接在可燃易爆气体设备的气体出口上，所述尾部连接件(6)与收缩装置(3)密封连接；所述滑导连接件(5)一端固定连接设备连接件(1)上，另一端穿出尾部连接件(6)上设置的通孔，使尾部连接件(6)能够在滑导连接件(5)上滑动，带动所述收缩装置(3)往复动作。1. A high-temperature dynamic sealing device for combustible and explosive gas, characterized in that: it comprises an equipment connector (1), a shrinking device (3), a sliding guide connector (5) and a tail connector (6); The two ends of the shrinking device (3) are respectively fixedly connected to the equipment connector (1) and the tail connector (6), the device connector (1) is fixedly connected to the gas outlet of the combustible and explosive gas equipment, and the tail The connecting piece (6) is sealedly connected with the shrinking device (3); one end of the sliding guide connecting piece (5) is fixedly connected to the connecting piece of equipment (1), and the other end passes through the through hole provided on the tail connecting piece (6), The tail connecting piece (6) can slide on the sliding guide connecting piece (5) to drive the retracting device (3) to reciprocate. 2.根据权利要求1所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述滑导连接件(5)为杆状结构的导杆。2 . The high-temperature dynamic sealing device for combustible and explosive gas according to claim 1 , wherein the sliding guide connecting piece ( 5 ) is a guide rod with a rod-shaped structure. 3 . 3.根据权利要求2所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述导杆与设备连接件(1)的安装方向垂直或成一定锐角。3. A high-temperature dynamic sealing device for combustible and explosive gas according to claim 2, characterized in that: the guide rod is perpendicular to the installation direction of the equipment connector (1) or forms a certain acute angle. 4.根据权利要求3所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述锐角为30°～60°。4 . The high-temperature dynamic sealing device for combustible and explosive gas according to claim 3 , wherein the acute angle is 30°˜60°. 5 . 5.根据权利要求2所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：还包括固定安装在滑导连接件(5)上的间环(4)和固定安装在所述间环(4)上的轴承(2)，所述滑导连接件(5)穿过轴承(2)，由轴承(2)对滑导连接件(5)进行固定。5. A high-temperature dynamic sealing device for combustible and explosive gas according to claim 2, characterized in that: it also comprises an intermediate ring (4) fixedly installed on the sliding guide connector (5) and a spacer ring (4) fixedly installed on the sliding guide The bearing (2) on the intermediate ring (4), the sliding guide connecting piece (5) passes through the bearing (2), and the sliding guide connecting piece (5) is fixed by the bearing (2). 6.根据权利要求5所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述轴承(2)为石墨轴承。6 . The high-temperature dynamic sealing device for combustible and explosive gas according to claim 5 , wherein the bearing ( 2 ) is a graphite bearing. 7 . 7.根据权利要求2所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述导杆的数量不小于2，等距离地固定安装在设备连接件(1)和尾部连接件(6)上。7. A high-temperature dynamic sealing device for combustible and explosive gas according to claim 2, characterized in that: the number of the guide rods is not less than 2, and is fixedly installed at the equipment connector (1) and equidistantly. on the tail connector (6). 8.根据权利要求1～7任一项所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述收缩装置(3)为波纹管，材料为Inconel625。8 . The high-temperature dynamic sealing device for combustible and explosive gas according to claim 1 , wherein the shrinking device ( 3 ) is a bellows, and the material is Inconel625. 9 . 9.根据权利要求1～7任一项所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述设备连接件(1)与可燃易爆气体设备通过铜垫密封连接。9. A high-temperature dynamic sealing device for combustible and explosive gas according to any one of claims 1 to 7, characterized in that: the equipment connector (1) is sealed with the combustible and explosive gas equipment through a copper gasket connect. 10.根据权利要求1～7任一项所述的一种用于可燃易爆气体的高温动密封装置，其特征在于：所述滑导连接件(5)与设备连接件(1)螺纹连接或者焊接。10. A high-temperature dynamic sealing device for combustible and explosive gas according to any one of claims 1 to 7, characterized in that: the sliding guide connector (5) is threadedly connected to the equipment connector (1) or welding.
CN201811636337.6A 2018-12-29 2018-12-29 A high temperature dynamic sealing device for combustible and explosive gas Pending CN109630678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811636337.6A CN109630678A (en) 2018-12-29 2018-12-29 A high temperature dynamic sealing device for combustible and explosive gas

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Application Number Priority Date Filing Date Title
CN201811636337.6A CN109630678A (en) 2018-12-29 2018-12-29 A high temperature dynamic sealing device for combustible and explosive gas

Publications (1)

Publication Number Publication Date
CN109630678A true CN109630678A (en) 2019-04-16

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Citations (21)

* Cited by examiner, † Cited by third party
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US862867A (en) * 1906-03-28 1907-08-06 Lewis Watson Eggleston Pneumatic pumping apparatus.
US3192865A (en) * 1963-09-10 1965-07-06 Francis J Klempay Hydraulically actuated pump
CN1056127A (en) * 1990-04-27 1991-11-13 保罗·伍尔恩公司 Be used for preheated air is sprayed into the device of shaft furnace
CN101184950A (en) * 2005-05-27 2008-05-21 空中客车德国有限公司 Joints for pipes
CN101561070A (en) * 2009-05-19 2009-10-21 秦皇岛开发区诺实管业有限公司 Expansion ring sealed hot compensator
CN101793339A (en) * 2010-03-24 2010-08-04 辽宁新兴佳波纹管制造有限公司 Corrugated pipe compensator of disc spring sleeve
CN201708463U (en) * 2010-06-10 2011-01-12 河南平高东芝高压开关有限公司 Pressure balanced expansion joint used for high-voltage switch device
CN201764190U (en) * 2010-09-08 2011-03-16 攀钢集团冶金工程技术有限公司 Waterproof and dustproof corrugated pipe compensator
CN201916641U (en) * 2010-12-31 2011-08-03 攀钢集团冶金工程技术有限公司 Split corrugated pipe compensator
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CN204922355U (en) * 2015-08-24 2015-12-30 南京晨光东螺波纹管有限公司 Double containment external pressure axialmode expansion joint
CN205300372U (en) * 2016-01-25 2016-06-08 山东邦华热能工程有限公司 Jet flow type heat exchanger
CN106122584A (en) * 2016-08-26 2016-11-16 中国重型机械研究院股份公司 It is applicable to valve rod and the leak detection tool equipment thereof of the corrugated stainless steel tubing sealing of high temperature pressure corrosion gas
CN205938153U (en) * 2016-08-20 2017-02-08 浙江德卡控制阀仪表有限公司 Bellows double -gate valve
CN106931264A (en) * 2017-04-26 2017-07-07 佛山市高明燃气有限公司 Outer unidirectional adjustable and retractable bellows
CN207111217U (en) * 2017-05-16 2018-03-16 无锡华利达新型材料有限公司 A kind of automobile exhaust flexible pipe
CN108019582A (en) * 2018-01-17 2018-05-11 江苏苏创管业科技有限公司 High temperature resistant enhanced type non-metal expansion joint
CN109027399A (en) * 2018-09-19 2018-12-18 北京航天动力研究所 High pressure air governor gas valve open in usual
CN109838934A (en) * 2017-09-10 2019-06-04 甘肃光热发电有限公司 Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method

Patent Citations (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US862867A (en) * 1906-03-28 1907-08-06 Lewis Watson Eggleston Pneumatic pumping apparatus.
US3192865A (en) * 1963-09-10 1965-07-06 Francis J Klempay Hydraulically actuated pump
CN1056127A (en) * 1990-04-27 1991-11-13 保罗·伍尔恩公司 Be used for preheated air is sprayed into the device of shaft furnace
CN101184950A (en) * 2005-05-27 2008-05-21 空中客车德国有限公司 Joints for pipes
CN101561070A (en) * 2009-05-19 2009-10-21 秦皇岛开发区诺实管业有限公司 Expansion ring sealed hot compensator
CN101793339A (en) * 2010-03-24 2010-08-04 辽宁新兴佳波纹管制造有限公司 Corrugated pipe compensator of disc spring sleeve
CN201708463U (en) * 2010-06-10 2011-01-12 河南平高东芝高压开关有限公司 Pressure balanced expansion joint used for high-voltage switch device
CN201764190U (en) * 2010-09-08 2011-03-16 攀钢集团冶金工程技术有限公司 Waterproof and dustproof corrugated pipe compensator
CN103140680A (en) * 2010-09-29 2013-06-05 达塔特拉亚拉贾拉姆·谢尔克 Device for transferring energy between two fluids
CN201916641U (en) * 2010-12-31 2011-08-03 攀钢集团冶金工程技术有限公司 Split corrugated pipe compensator
CN102588705A (en) * 2011-01-07 2012-07-18 李春光 Pipeline compensator
US20150084328A1 (en) * 2013-09-24 2015-03-26 Witzenmann Gmbh Compensator arrangement
CN204922355U (en) * 2015-08-24 2015-12-30 南京晨光东螺波纹管有限公司 Double containment external pressure axialmode expansion joint
CN205300372U (en) * 2016-01-25 2016-06-08 山东邦华热能工程有限公司 Jet flow type heat exchanger
CN205938153U (en) * 2016-08-20 2017-02-08 浙江德卡控制阀仪表有限公司 Bellows double -gate valve
CN106122584A (en) * 2016-08-26 2016-11-16 中国重型机械研究院股份公司 It is applicable to valve rod and the leak detection tool equipment thereof of the corrugated stainless steel tubing sealing of high temperature pressure corrosion gas
CN106931264A (en) * 2017-04-26 2017-07-07 佛山市高明燃气有限公司 Outer unidirectional adjustable and retractable bellows
CN207111217U (en) * 2017-05-16 2018-03-16 无锡华利达新型材料有限公司 A kind of automobile exhaust flexible pipe
CN109838934A (en) * 2017-09-10 2019-06-04 甘肃光热发电有限公司 Explosion-proof stable type high-temperature molten salt heat collecting field and note salt method
CN108019582A (en) * 2018-01-17 2018-05-11 江苏苏创管业科技有限公司 High temperature resistant enhanced type non-metal expansion joint
CN109027399A (en) * 2018-09-19 2018-12-18 北京航天动力研究所 High pressure air governor gas valve open in usual

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Application publication date: 20190416

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