CN201547240U

CN201547240U - Novel inclined-surface sealing form movable connecting small-sized blind plate

Info

Publication number: CN201547240U
Application number: CN2009202141757U
Authority: CN
Inventors: 郝景杰; 忻佳瑜
Original assignee: SHANGHAI AEROSPACE ENERGY CO Ltd
Priority date: 2009-11-26
Filing date: 2009-11-26
Publication date: 2010-08-11
Anticipated expiration: 2019-11-26

Abstract

The utility model discloses a novel inclined-surface sealing form movable connecting small-sized blind plate which is characterized by comprising a cover plate assembly, a flange assembly and a seal ring, wherein the cover plate assembly is composed of a cover plate and an outer side handle which are tightly fixed, a flute is arranged on the inner side of the cover plate, a plurality of bolt hole grooves are arranged around the cover plate; the flange assembly comprises a flange, at least two pairs of supporting plates are evenly welded around the flange, a ball head bolt is fixed on the flange through a pin shaft and a split pin and can freely rotate; the seal ring is embedded on the flute positioned on the inner side of the cover plate, and the cover plate pushes down the flange through the ball head bolt to guarantee the seal ring to be tightly pressed on the inner inclined surface of the flange. The novel inclined-surface sealing form movable connecting small-sized blind plate has the characteristics of plane surface sealing and axial sealing, the sealing contact area is increased, and the reliability is enhanced.

Description

Living of a kind of novel inclined-plane seal form connects small-sized blind plate

Technical field

The utility model is that living of a kind of novel inclined-plane seal form connects small-sized blind plate, adopts the inclined-plane sealing, and 4 swing bolts are uniform, and it is low to be used for gas industry conventional filtration device end equal pressure, requires to open occasion quickly and easily.

Background technique

Mostly existing conventional filtration device end flange seal form is plane sealing or axial seal, and no matter plane sealing still is axial seal all is forced seals, and required pretightening force is all very big, and all is linear sealing, and area of contact is that sealing area is little, is easy to generate leakage; Its Connecting format is that plain bolt connects, and bolt quantity is many, and the pretightening force of each bolt is variant slightly all can be caused the seal ring unbalance stress and produce leakage.

Summary of the invention

In order to address the above problem, the small-sized blind plate product that the utility model provides improves in the inclined-plane sealing, and has proposed the new mode that swing bolt connects, and has realized that level and axial both direction play seal action simultaneously, have strengthened unfailing performance.

The utility model discloses living of a kind of novel inclined-plane seal form and connect small-sized blind plate, it is characterized in that, comprising: cover plate assembly forms by the handle in the cover plate and the outside is fastening, the inboard of described cover plate has groove, offers some bolt hole slots around the described cover plate; Flange assembly comprises a flange, at least two pairs of uniform being welded on around the described flange of dunnage, and swing bolt is fixed on the described flange by bearing pin, cotter pin, and can freely rotate; Seal ring is embedded in the groove of described cover plate inboard; Wherein, described cover plate is pressed on the described flange by described swing bolt, guarantees that described seal ring is pressed on the interior inclined-plane of described flange.

Reasonablely be, described swing bolt is 4, and described dunnage is 8.

Reasonable is that described swing bolt is chosen according to described flange rating and pressurized container bolt arrangement principle.

Reasonablely be that described swing bolt is determined the distance that span between every pair of dunnage and described dunnage are left described flange periphery according to the thickness of its bulb.

Reasonable is that described cotter pin is according to described bearing pin selection standard spare.

The utility model is taken into account the characteristics of plane sealing and axial seal, and sealing contact surface is long-pending to be increased, and unfailing performance strengthens.

Description of drawings

Below, with reference to accompanying drawing, for those skilled in the art that, to the detailed description of the present utility model, above-mentioned and other purposes of the present utility model, feature and advantage will be apparent.

Fig. 1 is a small-sized blind plate structural representation of the present utility model;

Fig. 2 is the cover plate assembly partial sectional view;

Fig. 3 is three-dimensional ssembly drawing;

Fig. 4 is a decomposing schematic representation of the present utility model.

Embodiment

Please be earlier with reference to shown in Figure 4, small-sized blank flange of the present utility model is by cover plate assembly 1, flange assembly 2, and be arranged on two seal rings 3 between the assembly and form.

Wherein, cover plate assembly 1 is welded by handle 11 and cover plate 12, and Fig. 2 has provided its sectional view.And the inboard of cover plate 12 has groove 121, closely cooperate with seal ring 3, thereby cover plate 12 is pressed on the flange 21 by swing bolt 24 and guarantees that seal ring 3 is pressed on the interior inclined-plane of flange 21, guarantees seal of vessel.

Flange assembly 2 comprises flange 21, cotter pin 27, dunnage 28, bearing pin 26, swing bolt 24 and nut 25, wherein eight (amounting to 4 pairs) dunnage 28 uniform being welded on around the flange 21, swing bolt 24 is passed through bearing pin 26, cotter pin 27 is fixed on the flange 21, and can freely rotate, swing bolt 24 is chosen according to flange 21 pressure ratings and pressurized container bolt arrangement principle, determine the distance that span between every pair of dunnage 28 and dunnage 28 are left flange 21 peripheries according to the thickness of swing bolt 24 bulbs, guarantee that swing bolt 24 can rotate flexibly.

Bearing pin 26 with still follow the principle that guarantees that swing bolt 24 freely rotates cooperating of dunnage 28,

swing bolt

24,27 of cotter pins carry out selection standard spares according to bearing pin 26.

Nut 25 does not need all to screw out swing bolt 24 during unlatching, only needs to screw out 1 circle to 2 circles, can be earlier during swivel nut 25 loosening 1 encloses 2 and encloses to it with the spanner reinforcing, just can manually push swing bolt 24 open, opens cover plate 12.

Flange 21 in the utility model and cover plate 12 usefulness 20 forging materials are made, and material property is with reference to GB150 forging material performance requirement, because working pressure is low, common forging material can satisfy requirement of strength.

Seal ring 3 in the utility model is standard O type circles, chooses with reference to mechanical design handbook.Lock ring makes its difficult drop-off and closely contacts with the flange port inclined-plane on the dome on the cover plate 12, thereby guarantees that internal tank is in closed state.

Swing bolt standard piece in the utility model is chosen with reference to mechanical design handbook, and material can be selected stainless steels such as A2-70 for use, and its open and close operation simultaneously easy makes it all increase resistance to corrosion etc.

The little blind plate of the utility model has been realized simple and practical effective best combination.

The small-sized blind plate product of the utility model said structure has two big prominent features: the first, and the inclined-plane sealing; The second, the swing bolt Connecting format is applied in the small-sized blind plate product of this type.Special design flange internal port is the inclined-plane, play seal action simultaneously in level and axial both direction, take into account the characteristics of plane sealing and axial seal, sealing contact surface is long-pending to be increased, unfailing performance strengthens, even bolt pretightening is not very evenly still can keep seal of vessel, seal ring 3 is selected O type standard seal circle for use, cover plate 12 promptly is the flange end cap, the size dome external diameter that it cooperates with seal ring 3, the value of groove depth should guarantee that seal ring 3 is that lock ring is on the dome of cover plate 12, again in its fatigue strength scope, after seal ring 3 contacts with flange 21 inner chamfer and compresses like this, can keep the inner chamber sealing not have leaks, outside 4 swing bolts 24 are distributed on the cover plate 12, easier maintenance seal ring 3 stressed evenly, sealing is reliable, just swing bolt 24 can be pulled off to 2 circle backs as long as unscrew nut 1 circle when opening, the handle that pulls on the cover plate 12 just can be opened cover plate 12.

Wherein: with standard O type circle φ 180 * 5.3 is example, then on the cover plate with seal ring fit dimension span:

Title	Dome external diameter (mm)	Groove depth (mm)
Title	Dome external diameter (mm)	Groove depth (mm)	Span	φ181-183	3.5-4.5

Flange 21 internal port bevel angles and roughness span:

Title	Bevel angle (°)	Roughness
Title	Bevel angle (°)	Roughness	Span	60-80	0.8-3.2

More than all embodiments only for the explanation the utility model usefulness, but not to restriction of the present utility model, person skilled in the relevant technique, under the situation that does not break away from spirit and scope of the present utility model, can also make various conversion or variation, so all technological schemes that are equal to also should belong to category of the present utility model and should be limited by each claim.

Claims

1. living of a novel inclined-plane seal form connects small-sized blind plate, it is characterized in that, comprising:

Cover plate assembly forms by the handle in the cover plate and the outside is fastening, and the inboard of described cover plate has groove, offers some bolt hole slots around the described cover plate;

Flange assembly comprises a flange, at least two pairs of uniform being welded on around the described flange of dunnage, and swing bolt is fixed on the described flange by bearing pin, cotter pin, and can freely rotate;

Seal ring is embedded in the groove of described cover plate inboard; Wherein,

Described cover plate is pressed on the described flange by described swing bolt, guarantees that described seal ring is pressed on the interior inclined-plane of described flange.

2. living of novel inclined-plane according to claim 1 seal form connects small-sized blind plate, it is characterized in that,

Described swing bolt is 4, and described dunnage is 8.

3. living of novel inclined-plane according to claim 1 and 2 seal form connects small-sized blind plate, it is characterized in that,

Described swing bolt is chosen according to described flange rating and pressurized container bolt arrangement principle.

4. living of novel inclined-plane according to claim 3 seal form connects small-sized blind plate, it is characterized in that,

Described swing bolt is determined the distance that span between every pair of dunnage and described dunnage are left described flange periphery according to the thickness of its bulb.

5. living of novel inclined-plane according to claim 4 seal form connects small-sized blind plate, it is characterized in that,

Described cotter pin is according to described bearing pin selection standard spare.