CN201136670Y - Self-sealed manhole cover of bulk powder tanker vehicle - Google Patents
Self-sealed manhole cover of bulk powder tanker vehicle Download PDFInfo
- Publication number
- CN201136670Y CN201136670Y CNU2007203000403U CN200720300040U CN201136670Y CN 201136670 Y CN201136670 Y CN 201136670Y CN U2007203000403 U CNU2007203000403 U CN U2007203000403U CN 200720300040 U CN200720300040 U CN 200720300040U CN 201136670 Y CN201136670 Y CN 201136670Y
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- Prior art keywords
- manhole
- sealing
- lower aerofoil
- manhole cover
- tank truck
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Abstract
The utility model discloses a self-sealing manhole cover for bulk powder tanker vehicles, which mainly comprises a manhole cover ring, a top cover, a fixed press plate, a rubber ring, etc. which are welded to an integer. The rubber wing is fixed under the fixed press plate by bolt nuts and press rings and consists of an upper wing surface, a side facade and a lower wing surface having an external stretching edge, wherein, the sections of the upper wing surface and the side facade are rectangular, the section of the lower wing surface is in the same thickness, and the whole section is in a shape of a reverse J; the upper wing surface is connected with the side facade in a right angle, the side facade is connected with the inner side of the lower wing surface in a strengthening round angle or a strengthening chamfer angle, and a sealing flange is arranged under the end part of the inner side of the lower wing surface; the external stretching edge of the lower wing surface is in a shape of an outward and upward replicate right angle and tightly hoops the bottom and the external lower wall surface of the manhole cover ring. The self-sealing manhole cover for bulk powder tanker vehicles has the advantages of strong rigidity and intensity, good sealing effect and high pressure resistance, and is especially suitable for use on railway bulk powder tanker vehicles.
Description
Technical field
The utility model relates to the manhole equipment on the bulk loading powder article tank truck, refers to a kind of bulk loading powder article tank truck self-sealing manhole cover particularly.
Background technology
At present, the manhole great majority on the China railways vehicle bulk loading powder article tank truck still adopt traditional self sealss form, the history in existing more than 30 year.Its structure mainly is made up of manhole collar and manhole cover, and the manhole collar is by the manhole seat ring and hold the decorative cover assembly welding and form, and is welded on the tank body.Manhole cover is made up of manhole decorative cover, top cover, fixation clip, seal ring and pressure ring etc., and seal ring is fixed on the fixation clip with bolt and nut by pressure ring.One end of manhole cover is connected by shipping and reselling on another market on manhole collar's the journal stirrup, the pin that can rotate rotation.After manhole cover was closed, the other end compressed it by twist lock, and seal ring can be fitted in and hold on the decorative cover like this.
Its basic functional principle is: after reaching certain numerical value for the gas filed air pressure of tank body, manhole cover seal ring compresses manhole and holds decorative cover under the effect of pressure, thereby makes manhole realize self sealss.For the railway bulk cement carrier, its pressure that can bear is about 0.35MPa, is higher than the pressure of the about 0.25MPa of general bulk cement carrier.The manhole of this structure is stamped low cost of manufacture, simple to operate, durable in use, advantage such as maintenance workload is little, the original design situation and create conditions constant and situation that customer requirements is not high under, can satisfy operating needs basically.
But still there are some weak points in above-mentioned manhole cover: when the jar internal pressure is lower than certain numerical value, manhole is sealed well.When making or be equipped with difference or problem such as manhole cover distortion in use occurs, manhole also often occurring can not fine leak free phenomenon.In tank body being carried out water test or the actual process of using, when pressure is less than 0.2MPa often, have certain leakage; And after pressure is brought up to more than the 0.6MPa, rubber seal under high-voltage effect through regular meeting from manhole cover with hold and rout up between the decorative cover, cause water test or actual use not to continue.Have the pulvis of strong abrasion action for some, for example alumina powder can strengthen the wearing and tearing of holding decorative cover and seal ring under the situation of often leaking out, and sealing effectiveness is obviously descended, and has a strong impact on drawing off of powder thing.Particularly at concentrated phase alumina powder tank car, require the working pressure of tank body to reach 0.5MPa, traditional manhole cover uses very reluctantly on such tank car.
Trace it to its cause: the conventional seals circle is that the cross section is the rubber ring of groove shape, is made up of top airfoil, side elevation and lower aerofoil, and wall thickness is about 5mm.Its top airfoil is fixed on the mounting ring of manhole cover by bolt and angle steel type pressure ring, makes whole rubber ring location.Its side elevation contacts with the inwall of manhole decorative cover, rises outward to prevent rubber ring.Its lower aerofoil be certain leaning angle is arranged and from the root to the end shape of attenuation gradually, design is to wish that lower aerofoil can and hold decorative cover and fits tightlyer like this, can more easily be crushed on when the rubber ring pressurized and hold on the decorative cover, to realize good sealing.And actual conditions are: because the end of lower aerofoil is very thin, when rubber ring is shaped, be easy to wrinkling, so almost not applying power generation.When the side elevation bottom of holding decorative cover and rubber ring contacted, the end of its lower aerofoil usually upwarped, and did not fit, so usually gas leakage easily when the jar internal pressure is low.When the jar internal pressure is increased to certain numerical value, again because lower aerofoil is too thin, is easy to from manhole cover and holds the gap between the decorative cover and extrude, cause tank body gas to discharge in a large number.Simultaneously, be subjected to the restriction of prototectonics, the design rigidity and the intensity of traditional manhole cover are also inadequate, may produce nonvolatil structural distortion in the use, and this also is the reason that rubber ring is extruded easily when causing the manhole water test.In addition, rubber ring is fixed on the fixation clip by the angle steel type pressure ring, and its seal face is the undulate attitude after moulding, its side also is difficult to guarantee vertical, therefore, both increase the sealing difficulty of rubber ring lower aerofoil end, also the side elevation of rubber ring had not been played good supporting role.From calculating, the analog simulation to traditional manhole cover and rubber ring also confirmed the existence of above-mentioned phenomenon.So the design sealing property is better, it is extremely urgent to bear the higher manhole cover of pressure.
Summary of the invention
Aim of the present utility model will overcome above-mentioned existing in prior technology defective exactly, provides that a kind of rigidity and intensity are big, good sealing effect, bearing capacity height and the simple bulk loading powder article tank truck self-sealing manhole cover that is easy to of processing.
For achieving the above object, the bulk loading powder article tank truck self-sealing manhole cover that the utility model is designed, main is manhole decorative cover, top cover and the fixation clip of one by assembly welding, and forms by the parts such as rubber ring that bolt and nut and pressure ring are fixed on below the fixation clip.The lower aerofoil that described rubber ring is the uniform thickness shape by the rectangular top airfoil in cross section and side elevation and cross section and has an outer extension edge is formed, and its global sections is the font of falling J.Link to each other by the right angle between described top airfoil and the side elevation, link to each other by strengthening fillet or reinforcing chamfer between described side elevation and the lower aerofoil inboard, be provided with sealing flange below the described lower aerofoil medial end, the cross sectional shape of described sealing flange can be a kind of in semicircle, quadrntnt shape, triangle, rectangle or the polygon.The outer extension edge of described lower aerofoil is the shape of turning back in the right angle that outwards makes progress, and lock ring is engaged on the bottom and outer lower portion wall of manhole decorative cover.
Further, offer sealed groove on the outer lower portion wall of described manhole decorative cover, the corresponding position of the outer extension edge of described lower aerofoil is provided with the seal boss that can embed in the described sealed groove, can make like this rubber ring better lock ring on the manhole decorative cover, also can make the manhole cover circle better tractive live rubber ring, to guarantee sealing effectiveness.
Further, be provided with knuckle above the end of described lower aerofoil, this knuckle is corresponding with sealing flange, can coordinate the elastic deformation of sealing flange, strengthens the sealing effectiveness of sealing flange.
Further, the ratio of the radical length of described lower aerofoil and top airfoil is 3/5～4/5; Described lower aerofoil upper uplifting angle with respect to the horizontal plane is 0～3 °.The length of design lower aerofoil slightly is shorter than top airfoil, and gives its small upper uplifting angle, and the antagonistic force that is produced in the time of can strengthening its pressurized is guaranteed its sealing effectiveness.
Further, described pressure ring adopts face-flange formula pressure ring, can suitably move down fixation clip like this and it is widened thickening, to improve manhole cover steel structure intensity and rigidity, increases its bearing capacity.
Advantage of the present utility model is: the outer extension edge lock ring of designed rubber ring lower aerofoil is at the bottom and the outer lower portion wall of manhole decorative cover, and the packing interaction by outer extension edge back seal boss and manhole decorative cover back seal groove, make rubber ring when normal working, be close to manhole decorative cover inboard, and bondsman's port lid also keeps its original confined state well when closing, to guarantee good sealing effectiveness.
The designed rigidity that can effectively improve the lower aerofoil root at the reinforcement fillet or the reinforcing chamfer of side elevation and lower aerofoil inboard, the lower aerofoil of designed uniform thickness shape also can effectively improve himself resistance to bending, has so just obviously strengthened lower aerofoil and the applying contact force of holding decorative cover.Designed sealing flange below the lower aerofoil end can guarantee rubber ring all the time the end with hold decorative cover and contact, and because area of contact significantly reduces, can directly improve itself and the contact pressure that holds decorative cover, change into the line contact by the face contact simultaneously, make rubber ring can produce bigger contact pressure under manhole cover deadweight effect, it contacts better effects if.And the lower aerofoil of uniform thickness shape and the sealing flange below the end thereof can effectively increase the stretch-proof area of lower aerofoil, directly improve the ability of pressing in its opposing, thereby make seal ring can bear higher pressure.
In addition, change the pressure ring of original angle steel type into face-flange formula pressure ring, the space of being saved is used for suitably widening thickening and moves down fixation clip, not only simplify the structure and production technology, and the rigidity and the intensity of manhole cover have effectively been strengthened, also can easily rubber ring be pressed on the fixation clip, prevent the generation of leakage phenomenon.
Description of drawings
Fig. 1 is the package assembly scheme drawing of bulk loading powder article tank truck self-sealing manhole cover of the present utility model;
Fig. 2 is the A portion structure for amplifying scheme drawing among Fig. 1.
The specific embodiment
Below in conjunction with the drawings and specific embodiments bulk loading powder article tank truck self-sealing manhole cover of the present utility model is described in further detail:
As shown in Figure 1, the self-sealed manhole of bulk loading powder article tank truck mainly is made up of manhole collar and manhole cover two parts of the present utility model.The manhole collar by manhole seat ring 10, hold decorative cover 9, ship and resell on another market support plate 17 and twist lock support plate 18 assembly weldings form, and are weldingly fixed on the tank body 11.Manhole cover is made up of parts such as manhole decorative cover 2, top cover 5, fixation clip 4, pressure ring 7 and rubber rings 6, pressure ring 7 adopts face-flange formula pressure ring, fixation clip 4 can be widened thickening 1～3mm on the basis of conventional size, its installation site also can move down 8～10mm on the basis of conventional size.Manhole decorative cover 2, top cover 5 and fixation clip 4 assembly weldings are one, by bolt and nut 3 and pressure ring 7 rubber ring 6 are assembled on the fixation clip 4.One end of manhole cover 1 is connected on manhole collar's the support plate 17 of shipping and reselling on another market by shipping and reselling on another market, and the manhole cover pin 1 that can rotate rotates freely like this, to open and close manhole.When manhole is closed, plugs twist lock 8 and can compress manhole cover.At this moment rubber ring 6 with hold decorative cover 9 and fit tightly, can make manhole be in sealing state.
As shown in Figure 2, the lower aerofoil 15 that rubber ring 6 of the present utility model is the uniform thickness shape by the rectangular top airfoil 12 in cross section and side elevation 13 and cross section and has an outer extension edge 23 is formed, and its global sections is the font of falling J.Link to each other by right angle 20 between top airfoil 12 and the side elevation 13, link to each other by strengthening fillet or reinforcing chamfer 14 between side elevation 13 and lower aerofoil 15 inboards.Be provided with sealing flange 16 below lower aerofoil 15 medial ends, the cross sectional shape of sealing flange 16 is a kind of in semicircle, quadrntnt shape, triangle, rectangle or the polygon.Be provided with knuckle 19 above lower aerofoil 15 medial ends.Lower aerofoil 15 inboards are 3/5～4/5 with the ratio of the radical length of top airfoil 12.And lower aerofoil 15 upper uplifting angle with respect to the horizontal plane is designed to 0～3 °.
The outer extension edge 23 of lower aerofoil 15 is the shape of turning back in the right angle that outwards makes progress, and lock ring is engaged on the bottom and outer lower portion wall of manhole decorative cover 2.Wherein: offer sealed groove 21 on the outer lower portion wall of manhole decorative cover 2, sealed groove 21 is circular arc, and its arc radius is 3～5mm, and the circular arc degree of depth is 1～1.5mm.Design has the seal boss 22 that can embed in the sealed groove 21 on the corresponding position of the outer extension edge 23 of lower aerofoil 15, seal boss 22 also is cooresponding circular arc, the home position of its home position and sealed groove 21 is to bias internal 0.3～0.5mm, that is to say that its home position is slightly less than the home position of sealed groove 21 on radial dimension, so that rubber ring 6 lock rings are on manhole decorative cover 2.
This shows that under the situation that manhole cover of the present utility model is pressed, because gas pressure on the medial surface of rubber ring 6, makes the big more rubber ring 6 of pressure also big more with the footprint pressure of its corresponding contact surface, sealing is just tight more like this in bearing.When increased pressure, rubber ring 6 rises outside the meeting under the effect of interior pressure, the distortion that the lower aerofoil 15 of its uniform thickness and sealing flange 16 can provide enough big tension sectional area to cause with renitency.Simultaneously, actually because sectional area increases reduced manhole decorative cover 2 and held the gap of decorative cover 9 in short transverse, also effectively avoided rubber ring 6 from manhole decorative cover 2 with hold the phenomenon of extruding between the decorative cover 9 and take place, thus the integral body that has significantly improved the utility model rubber ring hold in pressure energy power.
In sum, because the lower aerofoil rubber volume of the utility model rubber ring obviously increases, and the outer extension edge of lower aerofoil is waled the manhole decorative cover tightly, so its hoop stretch-proof ability can significantly increase, make it be not easy from the gap, to extrude, also can bear higher interior pressure, thereby make fabulous sealing effectiveness of manhole cover maintenance and the voltage endurance capability of Geng Gao.
Claims (8)
1. bulk loading powder article tank truck self-sealing manhole cover, comprise that assembly welding is manhole decorative cover (2), top cover (5) and the fixation clip (4) of one, and be fixed on rubber ring (6) below the fixation clip (4) by bolt and nut (3) and pressure ring (7), it is characterized in that: the lower aerofoil (15) that described rubber ring (6) is the uniform thickness shape by the rectangular top airfoil in cross section (12) and side elevation (13) and cross section and has outer extension edge (23) is formed, and its global sections is the font of falling J; Link to each other by right angle (20) between described top airfoil (12) and the side elevation (13), link to each other by strengthening fillet or reinforcing chamfer (14) between described side elevation (13) and lower aerofoil (15) inboard, be provided with sealing flange (16) below described lower aerofoil (15) medial end; The outer extension edge (23) of described lower aerofoil (15) is the shape of turning back in the right angle that outwards makes progress, and lock ring is engaged on the bottom and outer lower portion wall of manhole decorative cover (2).
2. bulk loading powder article tank truck self-sealing manhole cover according to claim 1, it is characterized in that: offer sealed groove (21) on the outer lower portion wall of described manhole decorative cover (2), the corresponding position of the outer extension edge (23) of described lower aerofoil (15) is provided with the seal boss (22) that can embed in the sealed groove (21).
3. bulk loading powder article tank truck self-sealing manhole cover according to claim 2 is characterized in that: described sealed groove (21) is circular arc, and its arc radius is 3～5mm, and the circular arc degree of depth is 1～1.5mm; Described seal boss (22) also is cooresponding circular arc, and the home position of its home position and sealed groove (21) is to bias internal 0.3～0.5mm.
4. according to claim 1 or 2 or 3 described bulk loading powder article tank truck self-sealing manhole covers, it is characterized in that: described lower aerofoil (15) is provided with knuckle (19) above the medial end.
5. according to claim 1 or 2 or 3 described bulk loading powder article tank truck self-sealing manhole covers, it is characterized in that: the cross sectional shape of described sealing flange (16) is a kind of in semicircle, quadrntnt shape, triangle, rectangle or the polygon.
6. according to claim 1 or 2 or 3 described bulk loading powder article tank truck self-sealing manhole covers, it is characterized in that: described lower aerofoil (15) inboard is 3/5～4/5 with the ratio of the radical length of top airfoil (12).
7. according to claim 1 or 2 or 3 described bulk loading powder article tank truck self-sealing manhole covers, it is characterized in that: described lower aerofoil (15) upper uplifting angle with respect to the horizontal plane is 0～3 °.
8. according to claim 1 or 2 or 3 described bulk loading powder article tank truck self-sealing manhole covers, it is characterized in that: described pressure ring (7) is a face-flange formula pressure ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203000403U CN201136670Y (en) | 2007-12-20 | 2007-12-20 | Self-sealed manhole cover of bulk powder tanker vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203000403U CN201136670Y (en) | 2007-12-20 | 2007-12-20 | Self-sealed manhole cover of bulk powder tanker vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201136670Y true CN201136670Y (en) | 2008-10-22 |
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ID=40037361
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203000403U Expired - Lifetime CN201136670Y (en) | 2007-12-20 | 2007-12-20 | Self-sealed manhole cover of bulk powder tanker vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201136670Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235498A (en) * | 2010-04-22 | 2011-11-09 | 中国石油化工集团公司 | Hand hole with plug |
| CN103395583A (en) * | 2013-08-09 | 2013-11-20 | 浙江瑞森路政设施有限公司 | Storage tank manhole operation well |
-
2007
- 2007-12-20 CN CNU2007203000403U patent/CN201136670Y/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102235498A (en) * | 2010-04-22 | 2011-11-09 | 中国石油化工集团公司 | Hand hole with plug |
| CN102235498B (en) * | 2010-04-22 | 2013-09-11 | 中国石油化工集团公司 | Hand hole with plug |
| CN103395583A (en) * | 2013-08-09 | 2013-11-20 | 浙江瑞森路政设施有限公司 | Storage tank manhole operation well |
| CN103395583B (en) * | 2013-08-09 | 2015-11-04 | 浙江瑞森路政设施有限公司 | A kind of storage tank manhole operating well |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CSR CHANG JING VEHICLE CO., LTD. Free format text: FORMER OWNER: CSR WUHAN JIANG AN ROLLING STOCK WORKS Effective date: 20080919 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080919 Address after: New District, Jiangxia Economic Development Zone, Hubei, Wuhan Province: 430012 Patentee after: China South Locomotive & Rolling Stock Changjiang Vehicle Company Address before: 1746, Jiefang Avenue, Hankou, Hubei, Wuhan Province, China: 430012 Patentee before: China South Locomotive & Rolling Stock Group Wuhan Jianghan Vehicle Factory |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20071220 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |