A kind of ram preventer and its side door seal assembly
Technical field
The utility model is related to preventer technical field, more particularly to a kind of ram preventer and its side door sealing group
Part.
Background technology
At present, the side door sealing of the ram preventer of 70MPa pressure above rank is using floating skeleton structure, such as Fig. 1
It is shown, there are three seals circle, i.e. side door sealing ring 02, external sealing ring 03 and original rear sealing ring 04 on skeleton 01.
In real work, there are following drawbacks for side sealing shown in FIG. 1:Since skeleton 01 is used to install original rear
The ring recess of sealing ring 04 is shallower, and storage glue amount is few, causes the sealing effect between skeleton 01 and side door poor, under high pressure operating mode,
The trend expanded outward easily occurs for side door, and eventually leads to deformation.
Therefore, the side door sealing structure of ram preventer how is improved, to improve leakproofness, becomes this field and urgently solves
Certainly the technical issues of.
Utility model content
In view of this, the utility model provides a kind of ram preventer and its side door seal assembly, the side door sealing group
Part can effectively improve the leakproofness of side door sealing.
In order to achieve the above object, the utility model provides following technical solution:
The side door seal assembly of a kind of ram preventer, including floating skeleton, external sealing ring, side door sealing ring and initial
Back seal circle offers to install on the end face of the housing of the skeleton body of the floating skeleton close to the ram preventer
First ring recess of the side door sealing ring;
The skeleton body symmetrically offers described initial for installing on the end face of side door with first ring recess
Second ring recess of back seal circle, the center vertical section pair of first ring recess and second ring recess about the skeleton body
Claim;
The third ring recess for installing the external sealing ring is offered on the peripheral surface of the skeleton body;
The inside of the skeleton body offers the communicating passage of connection peripheral surface and inner peripheral surface, and the communicating passage is from described
The centre of second ring recess and the third ring recess passes through.
Preferably, in above-mentioned side door seal assembly, the depth of first ring recess is 20mm~40mm, width 30mm
~45mm.
Preferably, in above-mentioned side door seal assembly, the communicating passage is along linear extension, and the communicating passage is opened
The port for being located at the inner peripheral surface is located on the central cross-section face.
Preferably, in above-mentioned side door seal assembly, the external sealing ring, the side door sealing ring and the initial back of the body
At least one of portion's sealing ring is rectangular seal.
Preferably, in above-mentioned side door seal assembly, the material of the skeleton body is steel.
Preferably, in above-mentioned side door seal assembly, the surface of the skeleton body is coated with nickel phosphorous layer.
Preferably, in above-mentioned side door seal assembly, the skeleton body is rectangular box.
Preferably, in above-mentioned side door seal assembly, the quadrangle of the skeleton body has arc transition.
Preferably, in above-mentioned side door seal assembly, the peripheral surface of the skeleton body and the flatness of inner peripheral surface are not more than
0.05。
A kind of ram preventer, including side door seal assembly, the side door seal assembly by such as above-mentioned any one public affairs
The side door seal assembly opened.
According to above-mentioned technical proposal it is found that in the side door seal assembly provided by the utility model for ram preventer,
The skeleton body of floating skeleton is offered on the end face of the housing of ram preventer for the first lap of installation side door sealing circle
Slot offers the second ring recess for installing original rear sealing ring on the end face of side door, and the first ring recess and second encloses
Slot is symmetrical about the center vertical section of skeleton body;The third circle for installing external sealing ring is offered on the peripheral surface of skeleton body
Slot;Communicating passage inside skeleton body is passed through from the centre of the second ring recess and third ring recess, connects the peripheral surface of skeleton body and interior
Circumferential surface, under high-pressure situations, if gap occurs in side door, high-pressure fluid will be entered external close by the communicating passage on skeleton body
Seal back simultaneously provides pressure, since the first ring recess and the second ring recess are symmetrical arranged, so skeleton body bottom compression area is more than
Section compression face, then under hydraulic action, housing seal face is close in the end face of skeleton body, and pressure is bigger, and fitting is tighter.Pass through
Boosting skeleton body is moved to housing, can be pressed further by side door sealing ring, is improved fluid and is helped envelope effect;Meanwhile fluid is direct
Generation is contacted with external sealing ring and helps envelope effect, and pressure is higher, side door sealing ring and external sealing ring help envelope effect more apparent,
It can be seen that side door seal assembly provided by the utility model can effectively improve the leakproofness of side door sealing.
Description of the drawings
It in order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiment of the utility model, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the schematic diagram of the side door sealing of ram preventer in the prior art;
Fig. 2 is a kind of cross section signal of the side door seal assembly for ram preventer that the utility model embodiment one provides
Figure;
Fig. 3 is the stereoscopic schematic diagram of part 3 in Fig. 2.
In figure label for:
01st, skeleton;02nd, side door sealing ring;03rd, external sealing ring;04th, original rear sealing ring;1st, housing;2nd, side door 3,
Skeleton body;31st, communicating passage;32nd, the first ring recess;33rd, third ring recess;4th, side door sealing ring;5th, external sealing ring;6th, the initial back of the body
Portion's sealing ring;A, housing seal face;B, side door sealing surface.
Specific embodiment
In order to make it easy to understand, the utility model will be further described below in conjunction with the accompanying drawings.
Embodiment one
Referring to Fig. 2 and Fig. 3, Fig. 2 is a kind of side door sealing group for ram preventer that the utility model embodiment one provides
The cross-sectional view of part, Fig. 3 are the stereoscopic schematic diagrams of part 3 in Fig. 2.
The side door seal assembly for ram preventer that the utility model embodiment one provides includes floating skeleton, outside
Sealing ring 5, side door sealing ring 4 and original rear sealing ring 6, wherein, the skeleton body 3 of floating skeleton is close to the shell of ram preventer
The first ring recess 32 for installation side door sealing circle 4 is offered on the end face (i.e. the end face opposite with housing seal face A) of body 1;
Skeleton body 3 is symmetrically opened on the end face of side door 2 (i.e. back to the end face of housing seal face A) with the first ring recess 32
Equipped with for installing the second ring recess of original rear sealing ring 6 (in figure unmarked), the first ring recess 32 and the second ring recess are about bone
The center vertical section of frame body 3 is symmetrical;
The third ring recess 33 for installing external sealing ring 5 is offered on the peripheral surface of skeleton body 3;
The inside of skeleton body 3 offers the communicating passage 31 of connection peripheral surface and inner peripheral surface, and communicating passage 31 is enclosed from second
The centre of slot and third ring recess 33 passes through.
As shown in Fig. 2, original rear sealing ring 6 provides pretightning force for skeleton body 3, that is, play the role of rubber spring.
As shown in figure 3, " center vertical section " refer to it is parallel with the end face of skeleton body 3, and to the distance phase of two end faces
Deng plane.First ring recess 32 and the second ring recess are symmetrically opened in the both sides of center vertical section, so, the first ring recess 32 and
Two ring recess shapes are identical, equal sized.In specific practical application, the depth of the first ring recess 32 can be 20mm~40mm, width
Can be 30mm~45mm.
Referring to Fig. 2, during using side door seal assembly provided by the utility model, under high-pressure situations, if side door 2 occurs
Gap, the high-pressure fluid between housing seal face A and side door sealing surface B will be entered outer by the communicating passage 31 on skeleton body 3
Sealing ring 5 back in portion's simultaneously provides pressure, since the first ring recess 32 is symmetrical arranged with the second ring recess, so 3 bottom of skeleton body is pressurized
Area is more than section compression face, and then under hydraulic action, housing seal face A is close in the end face of skeleton body 3, and pressure is bigger, patch
It closes tighter.It is moved by boosting skeleton body 3 to housing 1, side door sealing ring 4 can be pressed further by, improved fluid and help envelope effect;
Meanwhile fluid directly contacts generation with external sealing ring 5 and helps envelope effect, and pressure is higher, side door sealing ring 4 and external sealing ring
5 help envelope effect more apparent, it can be seen that, side door seal assembly provided by the utility model can effectively improve side door sealing
Leakproofness.
In order to improve sealing effect, external sealing ring 5, side door sealing ring 4 and original rear sealing ring 6 can select rectangle
Sealing ring.
Communicating passage 31 is flowed through for the ease of processing and smoothly convenient for fluid, in embodiment one, communicating passage 31 is along straight
Line extends, and the port for being opened in inner peripheral surface of communicating passage 31 is located on central cross-section face, as shown in Figure 2.
In embodiment one, skeleton body 3 is rectangular box, as shown in figure 3, the quadrangle of skeleton body 3 has arc transition, in this way
Sealing ring can be bonded even closer with skeleton body 3, avoid gap occur at turning.
Embodiment two
Embodiment two is differed only in embodiment one, and the shape of skeleton body 3 is different, in embodiment two, skeleton body 3
For waist round hole shape.
In the above various embodiments, the material of skeleton body 3 can select steel, moreover, in specific practical application, Ke Yi
The surface of skeleton body 3 is coated with nickel phosphorous layer.The peripheral surface of skeleton body 3 and the generally requirement of the flatness of inner peripheral surface are no more than 0.05.
The utility model also provides a kind of ram preventer, and it is close which includes side door disclosed in above-described embodiment
Sealing assembly.Since side door seal assembly disclosed in above-described embodiment has above-mentioned technique effect, there is the side door sealing group
The ram preventer of part equally has above-mentioned technique effect, repeats no more herein.
The foregoing description of the disclosed embodiments enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications of embodiment will be apparent for those skilled in the art, it is as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present utility model.Therefore, originally
Utility model is not intended to be limited to embodiment illustrated herein, and is to fit to and the principles and novel features disclosed herein
Consistent most wide range.