CN216279491U

CN216279491U - Be applied to reset assembly and dome valve automatic re-setting piston of dome valve

Info

Publication number: CN216279491U
Application number: CN202023005690.XU
Authority: CN
Inventors: 俞爱华; 俞杰
Original assignee: Jiangsu Gen De Power Equipment Co ltd
Current assignee: Jiangsu Gen De Power Equipment Co ltd
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2022-04-12
Anticipated expiration: 2030-12-15

Abstract

The utility model discloses a resetting component applied to a dome valve and an automatic resetting piston of the dome valve, wherein the resetting component comprises a limiting ring which is arranged on a sealing component of the dome valve; the connecting piece is connected with the limiting ring; the elastic piece is arranged between the limiting ring and the connecting piece; the limiting ring moves between the end face of the connecting piece and the sealing gland. The dome valve automatic reset piston comprises a reset assembly and a sealing assembly, wherein the sealing assembly comprises a sealing gland and is connected with the reset assembly; and the piston is arranged on the sealing gland. The dome valve resetting assembly and the dome valve automatic resetting piston are tightly attached to the ball valve, so that the dome valve is good in sealing performance, the resetting assembly solves the problem that the piston ring is inclined due to the fact that the ball valve is tightly attached to the piston ring, repeated maintenance and adjustment are avoided, the use requirement is met, and the dome valve resetting assembly and the dome valve automatic resetting piston are convenient to popularize and use.

Description

Be applied to reset assembly and dome valve automatic re-setting piston of dome valve

Technical Field

The utility model relates to the technical field of valve bodies, in particular to a resetting component applied to a dome valve and an automatic resetting piston of the dome valve.

Background

The common ball valve is sealed mainly by means of the pretightening force or the fluid pressure, the valve seat and the ball body are tightly pressed and the valve seat material is elastically and plastically deformed to achieve sealing, the valve body and the ball body are made of metal materials, the valve seat is made of soft non-metal materials, when the ball valve is applied to cold and hot working environments, the valve seat and the valve body are different in materials, and the expansion with heat and the contraction with cold are inconsistent, so that the ball valve is easy to leak or the valve is out of operation. The prior dome valve utility model adopts the combination of air bag inflation and expansion and spherical surface to realize sealing and block medium circulation; because the air bag is sealed and needs gas to expand to be attached to the spherical surface, the material and the service life of the air bag cannot reach the continuous effect of using industrial and mining due to inherent factors (the air bag is worn, soft materials are easy to fatigue and break under a high-temperature environment), even if the air bag is replaced by the fluororubber materials, the medium in the pipeline is particles, so that the air bag is easy to wash and damage; because the industrial and mining of many occasions of the power plant are very bad, the service life of the air bag type soft sealing dome valve on the market is very short in the using process, and the air bag needs to be replaced in a short period, so that the production and the maintenance are inconvenient.

The inventor has earlier filed in the application file that submits and has described a novel double containment formula dome valve etc, this dome valve realizes the purpose of cutting off the medium through soft, hard seal piston valve seat motion and ball valve contact, it has more reliable performance and life-span than traditional sealing to adopt metal material to seal, very big reduction later maintenance's number of times, nevertheless in this dome valve gassing in-process of filling, during dome valve switch, the too inseparable of probably laminating between ball valve and the piston ring, can drive the piston ring slope when leading to the ball valve activity, in subsequent in-process, the ball valve just can not close well, need adjust the piston ring repeatedly, waste time and energy, seriously influence the use experience.

SUMMERY OF THE UTILITY MODEL

This section is for the purpose of summarizing some aspects of embodiments of the utility model and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the abstract of the specification and the title of the application to avoid obscuring the purpose of this section, the abstract of the specification and the title of the application, and such simplifications or omissions are not intended to limit the scope of the utility model.

The present invention has been made in view of the above and/or other problems associated with prior art dome valve pistons that include a ball valve that fits too tightly against the piston to cause tilting of the piston and affect its use.

Accordingly, it is an object of the present invention to provide a reset assembly for a dome valve and an automatic dome valve reset piston.

In order to solve the technical problems, the utility model provides the following technical scheme: a reset assembly for application to a dome valve comprising,

a stop collar disposed on the seal assembly of the dome valve;

the connecting piece is connected with the limiting ring; and the number of the first and second groups,

the elastic piece is arranged between the limiting ring and the connecting piece;

the limiting ring moves between the end face of the connecting piece and the sealing gland.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the limiting ring comprises a connecting surface and a limiting edge, the connecting surface extends along the radial direction, the limiting edge is located on the inner ring of the limiting ring and extends along the axial direction from one side of the connecting surface, and the outer side wall of the limiting edge is tightly attached to the sealing gland.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the sealing assembly is characterized in that a plurality of first connecting holes are formed in the connecting surface and are distributed in an even circumferential mode, second connecting holes are formed in the sealing gland, the first connecting holes and the second connecting holes are consistent in size and quantity, and the connecting piece is used for connecting the limiting ring and the sealing assembly through the first connecting holes and the second connecting holes.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the limiting ring is of a circular ring structure and is made of stellite alloy materials.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the automatic resetting piston of the dome valve comprises a resetting component and a sealing component, wherein the sealing component comprises a sealing gland and a piston rod, and the sealing gland is connected with the resetting component; the piston is arranged on the sealing gland;

the sealing gland is internally provided with a sealing cavity, the piston moves in the sealing cavity, and the movement range is between the inner end surface of the sealing gland and the limiting ring.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the sealing gland is of a circular flange structure, the sealing cavity is arranged in the inner ring of the sealing gland and is a circular cavity, the outer ring of the sealing cavity is provided with a circular boss, and the second connecting hole is arranged in the circular boss.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: and a sealing edge is arranged in the sealing cavity inner ring, and the height of the sealing edge is not more than that of the piston.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the piston is of a circular ring structure, an air groove is formed in the outer side wall close to one side of the piston, and an O-shaped sealing ring is arranged at the inner ring of the other side of the piston.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the O-shaped sealing ring is made of fluorine rubber materials.

As a preferable aspect of the reset assembly applied to the dome valve and the automatic reset piston of the dome valve according to the present invention, wherein: the sealing gland and the piston are both made of stellite alloy materials.

The utility model has the beneficial effects that: the dome valve resetting assembly and the dome valve automatic resetting piston are tightly attached to the ball valve, so that the dome valve is good in sealing performance, the resetting assembly solves the problem that the piston ring is inclined due to the fact that the ball valve is tightly attached to the piston ring, repeated maintenance and adjustment are avoided, the use requirement is met, and the dome valve resetting assembly and the dome valve automatic resetting piston are convenient to popularize and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise. Wherein:

figure 1 is an overall assembly view of a dome valve auto-reset piston.

FIG. 2 is a block diagram of a gland in a reset assembly for use with a dome valve.

Figure 3 is a cross-sectional view of the dome valve self-resetting piston assembled to the valve body.

Figure 4 is an overall view of the dome valve self-reset piston assembled to the valve body.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.

Furthermore, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one implementation of the utility model. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.

Example 1

Referring to FIG. 1, for a first embodiment of the present invention, there is provided a reset assembly 100 for use with a dome valve that is mounted on a dome valve auto-reset piston, the reset assembly 100 including a stop collar 101 disposed on a dome valve seal assembly 200; a connecting piece 102 connected with the limit ring 101; the elastic piece 103 is arranged between the limiting ring 101 and the connecting piece 102; the stop collar 101 moves between the connector end face 102a and the gland 201.

Specifically, the limiting ring 101 of the present invention includes a connecting surface 101a and a limiting edge 101b, the connecting surface 101a extends along a radial direction, the limiting edge 101b is located at an inner ring of the limiting ring 101 and extends along an axial direction from one side of the connecting surface 101a, and an outer side wall of the limiting edge 101b is tightly attached to the gland 201. In order to ensure that the assembly of the piston and the valve body is not influenced from the outer side and the movement of the ball valve is not influenced from the inner side when the limiting ring 101 is installed, the size and the thickness of the limiting ring 101 are matched with related parts, and the size of the inner diameter of the limiting ring 101 is just attached to the ball valve under the condition that the piston is tightly attached to the ball valve.

Furthermore, the connecting surface 101a is provided with a plurality of first connecting holes 101a-1, the first connecting holes 101a-1 are uniformly distributed circumferentially, the sealing gland 201 is provided with second connecting holes 201a, the first connecting holes 101a-1 and the second connecting holes 201a have the same size and number, and the connecting member 102 connects the limiting ring 101 and the sealing assembly 200 through the first connecting holes 101a-1 and the second connecting holes 201 a. The connecting member 102 in fig. 1 preferably uses a bolt to connect the stop collar 101 and the gland 201, and the elastic member 103 uses a compression spring to be sleeved between the bolt and the stop collar 101. The implementation mode is simple and convenient to understand, the manufacturing process and the connection difficulty are simple, the maintenance cost is low, and other modes which are complex can be adopted.

Wherein, the spacing ring 101 is made of stellite alloy material, and the stainless steel and stellite alloy performance comparison table is as follows:

performance of	Hardness of	Wear resistance	Price
				Stainless steel	In	Is low in	Is low in
Stellite alloy	Height of	Height of	Height of
				Fluorine glue	Is low in	Height of	Is low in

During the use, can unavoidably produce the friction between ball valve and the spacing ring, and long this before, ball valve and spacing ring can produce wearing and tearing, consequently chooses for use the higher stellite alloy of wearability and hardness all.

Example 2

Referring to fig. 2 to 4, a second embodiment of the present invention is based on the previous embodiment, and is different from the first embodiment in that: a dome valve automatic reset piston comprises a reset assembly 100 and a sealing assembly 200, wherein the sealing assembly 200 comprises a sealing gland 201 connected with the reset assembly 100; and, the piston 202, set up on the gland 201; the gland 201 is internally provided with a sealing cavity 201b, and the piston 202 moves in the sealing cavity 201b within a movement range between the inner end surface 201c of the gland 201 and the limiting ring 101.

Specifically, the gland 201 is a circular flange structure, and the flange structure of the outer ring of the gland is matched with the valve body to mount the whole piston 202 on the dome valve. The sealing cavity 201b is arranged on the inner ring of the sealing gland 201, the sealing cavity 201b is a circular cavity, the circular boss 201b-1 is arranged on the outer ring of the sealing cavity 201b, the second connecting hole 201a is arranged on the circular boss 201b-1, and the limiting ring 101 is arranged on the circular boss 201 b-1.

Further, a sealing edge 201b-2 is arranged on the inner ring of the sealing cavity 201b, the height of the sealing edge 201b-2 is not more than the height of the piston 202, the sealing edge 201b-2 is too high to enable the ball valve to be incapable of being attached to the piston 202, and the height of the sealing edge is equivalent to the height of the piston 202, so that when the piston 202 moves in the sealing cavity 201b, a gap cannot be formed between the piston 202 and the sealing edge 201 b-2. The piston 202 is of a circular ring structure, an air groove 202a is formed in the outer side wall of one face, close to the piston 202, of the piston 202, an air flow channel is formed between the air groove 202a and the sealing cavity 201b, air is filled into the air flow channel, and the piston 202 moves to press the limiting ring 101 and then is tightly attached to the ball valve. An O-shaped sealing ring 202b is arranged at the inner ring of the other surface of the piston 202, and the O-shaped sealing ring ensures that the piston 202 is tightly attached to the spherical surface of the ball valve. In addition, O type sealing washer 202b adopts fluorine rubber materials to make, in the middle of current ordinary dome valve, adopts the gasbag inflation and combines to realize sealed and block the medium circulation with the sphere, and gasbag itself is worn and torn easily, even change the gasbag into fluorine rubber materials, because the medium in the pipeline is the particulate matter, erodees the gasbag very easily and damages. Therefore, the sealing effect is achieved by soft and hard matching of the sealing ring 202b and the piston 202. The gland 201 and the piston 202 are also made of stellite alloy material, so that the piston 202 and the gland 201 are prevented from being worn too fast.

Based on the above, the reset piston engages the dome valve, see fig. 4. The ball valve is arranged on the spherical center support, the spherical center support is connected with the front shaft and the rear shaft, the front shaft and the rear shaft are arranged in the valve body shell, the spherical center support is driven to move by rotating the front shaft and the rear shaft, so that the opening or closing of the dome valve is realized, the ball valve is not in contact with the valve body in the rotating process, the ball valve is in contact with the limiting ring 101 and the piston 202 in sequence in the rotating process, when the ball valve is in contact with the limiting ring 101, the ball valve is not in contact with the limiting ring 101 due to the existence of the elastic part 103, the ball valve can be easily in contact with the piston 202 in the dome valve, the piston 202 and the sealing gland 201 are inflated again, so that the ball valve is completely attached to the piston 202, due to the air pressure effect, the ball valve can be attached to the piston 202 too tightly, and the O-shaped sealing ring can play a certain buffering role, and the dome valve is completely closed; when the dome valve is opened, pressure relief is firstly carried out, meanwhile, air bleeding is also carried out in the sealing cavity 201b, the ball valve rotates, the piston resets, namely, the elastic piece 103 rebounds to jack the limiting ring 101 and the piston 202, and scraping and rubbing cannot be formed between the ball valve and the piston.

It is important to note that the construction and arrangement of the present application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperatures, pressures, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter recited in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of this invention. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present inventions. Therefore, the present invention is not limited to a particular embodiment, but extends to various modifications that nevertheless fall within the scope of the appended claims.

Moreover, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those unrelated to the presently contemplated best mode of carrying out the utility model, or those unrelated to enabling the utility model).

It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure, without undue experimentation.

It should be noted that the above-mentioned embodiments are only for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the claims of the present invention.

Claims

1. A reset assembly (100) for application to a dome valve, characterized by: comprises the steps of (a) preparing a mixture of a plurality of raw materials,

a retainer ring (101) disposed on a dome valve seal assembly (200);

the connecting piece (102) is connected with the limiting ring (101); and the number of the first and second groups,

the elastic piece (103) is arranged between the limiting ring (101) and the connecting piece (102);

the limiting ring (101) moves between the end face (102a) of the connecting piece and the sealing gland (201).

2. The reduction assembly (100) of claim 1, wherein: spacing ring (101) are including connecting face (101a) and spacing limit (101b), connect face (101a) along radial extension, spacing limit (101b) are located the inner circle of spacing ring (101), and follow one side of connecting face (101a) is along axial extension, spacing limit (101b) lateral wall with gland (201) closely laminates.

3. The reduction assembly (100) of claim 2, wherein: be equipped with a plurality of first connecting holes (101a-1) on connecting face (101a), first connecting hole (101a-1) are even circumference and distribute, be equipped with second connecting hole (201a) on gland (201), first connecting hole (101a-1) is unanimous with second connecting hole (201a) size quantity, connecting piece (102) will through first connecting hole (101a-1) and second connecting hole (201a) spacing ring (101) are connected with seal assembly (200).

4. The reduction assembly (100) of claim 3, wherein: the limiting ring (101) is of a circular ring structure and is made of stellite alloy materials.

5. A dome valve self-resetting piston characterized by: comprising the reduction assembly (100), the seal assembly (200) of claim 4, the seal assembly (200) comprising,

a sealing gland (201) connected with the reset assembly (100); and the number of the first and second groups,

a piston (202) disposed on the gland (201);

the sealing gland (201) is internally provided with a sealing cavity (201b), the piston (202) moves in the sealing cavity (201b), and the movement range is between the inner end surface (201c) of the sealing gland (201) and the limiting ring (101).

6. A dome valve self-resetting piston as set forth in claim 5 wherein: sealing gland (201) are ring flange structure, the inner circle of sealing gland (201) is located in sealed chamber (201b), sealed chamber (201b) is the ring cavity, and sealed chamber (201b) outer lane is equipped with ring form boss (201b-1), second connecting hole (201a) are located on ring form boss (201 b-1).

7. A dome valve self-resetting piston as set forth in claim 6 wherein: the inner ring of the sealing cavity (201b) is provided with a sealing edge (201b-2), and the height of the sealing edge (201b-2) does not exceed the height of the piston (202).

8. A dome valve self-resetting piston as set forth in claim 7 wherein: the piston (202) is of a circular ring structure, an air groove (202a) is formed in the outer side wall of one side, close to the piston (202), of the piston, and an O-shaped sealing ring (202b) is arranged at the inner ring of the other side of the piston (202).

9. A dome valve self-resetting piston as set forth in claim 8 wherein: the O-shaped sealing ring (202b) is made of fluorine rubber materials.

10. A dome valve self-resetting piston as set forth in claim 9 wherein: the sealing gland (201) and the piston (202) are both made of stellite alloy materials.