CN219432495U - Radial valve seat energy storage sealing ring for gate valve - Google Patents

Abstract

The utility model discloses a radial valve seat energy storage sealing ring for a gate valve, which comprises an annular jacket, a spring piece and a linear compression ring, wherein an annular clamping groove is formed in the upper sealing surface of the annular jacket, the spring piece is clamped in the annular clamping groove, the spring piece comprises a plurality of V-shaped elastic pieces arranged along the circumferential direction, V-shaped openings of the V-shaped elastic pieces face to the notch of the annular clamping groove, and the linear compression ring is fixedly arranged at the V-shaped openings of the V-shaped elastic pieces. The utility model provides a radial valve seat energy storage sealing ring for a gate valve, which is characterized in that a spring piece is arranged in an annular clamping groove on the top surface of an annular clamping sleeve, then a clamping ring is fixed in a V-shaped opening on the spring piece, besides the self elasticity generates sealing, the spring piece and an annular inner groove are extruded by system pressure, so that the spring piece provides larger elasticity, the upper sealing surface and the lower sealing surface of the annular clamping sleeve are tightly attached to the flange surfaces of an upper flange and a lower flange, stronger sealing force is generated, and further better sealing effect is obtained.

Description

Radial valve seat energy storage sealing ring for gate valve

Technical Field

The utility model relates to the technical field of sealing rings, in particular to a radial valve seat energy storage sealing ring for a gate valve.

Background

The valve seat seal of the gate valve can be divided into a valve front seal and a valve rear seal, as shown in fig. 1, most of the valve rear seal is in a valve rear seal structure at present, the sealing under high and low pressure and high and low temperature is realized through two end face energy storage sealing rings, and the two end face sealing rings are formed by combining an opening inwards and another opening outwards. However, no matter the opening is inwards or the opening is outwards, the energy storage sealing ring is required to be changed in processing, the processing time is increased, the efficiency is reduced, a tool is required to be manufactured in the face changing processing, the processing precision of the tool can directly influence the product precision of the face changing post-processing and the parallelism and coaxiality of two faces, in addition, the product is thinner, the cost of the material is higher, the complex processing process is required to be higher, the production efficiency is reduced, and the cost is increased.

Disclosure of Invention

The utility model aims to provide a radial valve seat energy storage sealing ring for a gate valve, which is used for solving the problems.

In order to achieve the above purpose, the present utility model adopts the following technical scheme:

the utility model provides a radial disk seat energy storage sealing washer for gate valve, includes annular clamp sleeve, spring spare and a style of calligraphy clamping ring, annular clamp sleeve's upper seal face has seted up annular draw-in groove, the spring spare card is established in the annular draw-in groove, the spring spare includes a plurality of V type shell fragments that set up along circumference, just the V type opening orientation of V type shell fragment the notch of annular draw-in groove, a style of calligraphy clamping ring is fixed to be set up in the V type opening of V type shell fragment.

Preferably, the outer end of the V-shaped spring is connected to the outer end of the V-shaped spring on the left side thereof, and the inner end thereof is connected to the inner end of the V-shaped spring on the right side thereof.

Preferably, a limit snap ring is arranged on one side in the notch of the annular clamping groove along the circumferential direction and used for fixing the spring piece.

Preferably, the inner wall and the outer wall of the annular jacket are provided with a plurality of layers of annular protruding parts along the circumferential direction.

Preferably, a first bayonet is formed in the inner side of the lower sealing surface of the annular jacket along the circumferential direction, a second bayonet is formed in the outer side of the lower sealing surface of the annular jacket along the circumferential direction, and the first bayonet and the second bayonet are arranged at intervals.

Preferably, the annular jacket is made of polytetrafluoroethylene.

Preferably, the spring member and the linear compression ring are made of metal materials.

After the technical scheme is adopted, compared with the background technology, the utility model has the following advantages:

1. the utility model provides a radial valve seat energy storage sealing ring for a gate valve, which is characterized in that a spring piece is arranged in an annular clamping groove on the top surface of an annular clamping sleeve, then a clamping ring is fixed in a V-shaped opening of a V-shaped elastic sheet on the spring piece, when the radial valve seat energy storage sealing ring is used, the sealing ring is arranged in a lip between a valve seat and a valve body, the inner wall and the outer wall of the annular clamping sleeve are respectively contacted with the valve seat and the valve body, and the upper sealing surface and the lower sealing surface of the annular clamping sleeve of a product are respectively sealed with flange surfaces of an upper flange and a lower flange in the lip through elasticity generated after the spring piece in the annular clamping sleeve is extruded; when the system pressure exists, the system pressure can generate sealing by extruding the spring piece and the annular inner groove, so that the spring piece provides larger elastic force, the inner wall and the outer wall of the annular jacket are respectively tightly attached to the flange surfaces of the upper flange and the lower flange, stronger sealing force is generated, and better sealing effect is obtained. The sealing ring of the scheme is applied to the sealing ring of the gate valve seat, which is used for replacing the end face sealing ring with the outward opening, has small processing difficulty, does not need to carry out tooling surface changing processing, can greatly reduce a series of processing problems caused by tooling precision, can save a lot of cost in material selection, and can improve the efficiency.

2. The utility model provides a radial valve seat energy storage sealing ring for a gate valve, which is characterized in that an annular jacket is made of polytetrafluoroethylene, the performance is stable, and the temperature resistant range is wide.

Drawings

FIG. 1 is a schematic diagram of a structure mentioned in the background of the utility model;

FIG. 2 is a schematic diagram of the structure of the present utility model;

fig. 3 is an enlarged view of a portion of fig. 2 in accordance with the present utility model.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It should be noted that, in the present utility model, terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are all based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element of the present utility model must have a specific orientation, and thus should not be construed as limiting the present utility model.

Examples

Referring to fig. 1 to 3, the utility model discloses a radial valve seat energy storage sealing ring for a gate valve, which comprises an annular jacket 1, a spring piece 2 and a linear compression ring 3, wherein an annular clamping groove 11 is formed in the upper sealing surface of the annular jacket 1, in the embodiment, the sealing ring is vertically arranged in a lip 6 between a valve body 4 and a valve seat 5, so that the upper sealing surface of the annular jacket 1 is positioned on the right side in the drawing, the spring piece 2 is clamped in the annular clamping groove 11, the spring piece 2 comprises a plurality of V-shaped elastic pieces 21 arranged along the circumferential direction, the V-shaped opening of the V-shaped elastic pieces 21 faces towards the notch of the annular clamping groove 11, and the linear compression ring 3 is fixedly arranged in the V-shaped opening of the V-shaped elastic pieces 21 in a welding manner.

The outer ends of the V-shaped spring pieces 21 are connected with the outer ends of the V-shaped spring pieces 21 on the left side thereof, and the inner ends thereof are connected with the inner ends of the V-shaped spring pieces 21 on the right side thereof, so that the V-shaped spring pieces 21 are connected with each other.

The longitudinal section of the straight-line-shaped compression ring 3 is of a straight-line-shaped structure, the straight-line-shaped compression ring 3 is used for protecting the notch of the annular clamping groove 11 and preventing the notch of the annular clamping groove 11 from deforming due to overlarge pressure during reverse pressure, so that the lip 6 between the valve body 4 and the valve seat 5 is damaged. The gate 7 of the gate valve is arranged beside the notch of the annular clamping groove 11.

One side is provided with spacing snap ring 12 along circumference in the notch of annular draw-in groove 11 and is used for fixed spring 2, prevents that spring 2 from popping out from the notch of annular draw-in groove 11, and the notch inboard sets up spacing snap ring and compares two sides setting up spacing snap ring 12 and make things convenient for spring 2 to rebound more.

The inner wall and the outer wall of the annular jacket 1 are provided with a plurality of layers of annular protruding parts 13 along the circumferential direction. The annular jacket 1 is in interference fit with the matching surfaces of the valve body 4 and the valve seat 5, so that a better initial sealing effect is achieved.

The inner side of the lower sealing surface of the annular jacket 1 is provided with a first bayonet 14 along the circumferential direction, the outer side of the lower sealing surface of the annular jacket 1 is provided with a second bayonet 15 along the circumferential direction, and the first bayonet 14 and the second bayonet 15 are arranged at intervals.

The annular jacket 1 is made of polytetrafluoroethylene, more mediums can be adopted by the polytetrafluoroethylene, and the temperature resistant range is from-260 ℃ to +260 ℃. The spring 2 and the linear compression ring are made of metal materials.

The sealing ring of the scheme is applied to the sealing of the valve seat of the gate valve to replace the end face sealing ring 8 with the outward opening in the figure 1, and is matched with the end face sealing ring 9 with the inward opening of the other group and the flat gasket 10 to form the valve seat structure of the gate valve with the combination of the sealing before the valve and the sealing after the valve, so that the structure is relatively simple under the same sealing effect, the processing technology is relatively simple, the auxiliary tool is not needed to be used for changing the surface to process, a series of processing problems caused by the tool precision can be greatly reduced, and the material selection can save a lot of cost and improve the efficiency.

The present utility model is not limited to the above-mentioned embodiments, and any changes or substitutions that can be easily understood by those skilled in the art within the technical scope of the present utility model are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims (5)

1. The utility model provides a radial disk seat energy storage sealing washer for gate valve which characterized in that: including annular clamp sleeve, spring piece and a style of calligraphy clamping ring, annular clamping groove has been seted up to the upper seal face of annular clamp sleeve, the spring piece card is established in the annular clamping groove, the spring piece includes a plurality of V type shell fragments that set up along circumference, just the V type opening orientation of V type shell fragment the notch of annular clamping groove, a style of calligraphy clamping ring is fixed to be set up in the V type opening of V type shell fragment, one side is provided with spacing snap ring along circumference in the notch of annular clamping groove and is used for fixing spring piece, the inner wall and the outer wall lateral wall of annular clamp sleeve all are provided with a plurality of layers of annular bellying along circumference.

2. A radial seat accumulator seal for a gate valve as defined in claim 1 wherein: the outer end of the V-shaped elastic piece is connected with the outer end of the V-shaped elastic piece on the left side of the V-shaped elastic piece, and the inner end of the V-shaped elastic piece is connected with the inner end of the V-shaped elastic piece on the right side of the V-shaped elastic piece.

3. A radial seat accumulator seal for a gate valve as defined in claim 1 wherein: the inner side of the lower sealing surface of the annular jacket is provided with a first bayonet in the circumferential direction, the outer side of the lower sealing surface of the annular jacket is provided with a second bayonet in the circumferential direction, and the first bayonet and the second bayonet are arranged at intervals.

4. A radial seat accumulator seal for a gate valve as defined in claim 1 wherein: the annular jacket is made of polytetrafluoroethylene.

5. A radial seat accumulator seal for a gate valve as defined in claim 1 wherein: the spring piece and the straight-line compression ring are made of metal materials.