CN212455735U - Wedge-shaped pad combined self-sealing device of high-temperature and high-pressure valve - Google Patents
Wedge-shaped pad combined self-sealing device of high-temperature and high-pressure valve Download PDFInfo
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- CN212455735U CN212455735U CN202020856130.6U CN202020856130U CN212455735U CN 212455735 U CN212455735 U CN 212455735U CN 202020856130 U CN202020856130 U CN 202020856130U CN 212455735 U CN212455735 U CN 212455735U
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Abstract
The utility model discloses a high temperature high pressure valve wedge fills up combination from inseparable sealing device, a serial communication port, including valve body and gland box, be equipped with the sealed pad of carving shape in the space lower part that valve body and gland box formed, the sealed upper portion of carving shape is equipped with the sealed clamping ring that fills up that can play the guard action, is equipped with four on the upper portion of the sealed clamping ring that fills up and closes the ring, is equipped with the clamp plate in the department of being higher than the valve body horizontal plane, and the clamp plate passes through bolt assembly and is connected with the gland box. The utility model discloses an extension pretension bolt assembly's length size for the nut is a little higher than a valve body's plane among the bolt assembly, and corresponding horizontal plane has also been done to the clamp plate simultaneously and has raised, and it is limited that pretightning force in-process operating space has been applyed at the scene to this structural improvement solution current structure, and the problem of difficulty is changed in the dismouting, has improved self-sealing performance.
Description
Technical Field
The utility model relates to a high temperature high pressure valve wedge pad combination is from closely sealing device belongs to valve seal technical field.
Background
Along with the improvement of the integral technology of a pressure container and a pressure pipeline, the high-temperature and high-pressure self-sealing valve is more and more applied to the field, due to the wide application of the high-pressure technology, the performance of the valve in a high-pressure system directly influences the working reliability, safety, working efficiency and service life of the whole system, the requirements of frequent pressurization and pressure relief and different working conditions on the valve in the use process are further improved, the currently used wedge-shaped gasket combination self-sealing mode is shown in figure 1, the wedge-shaped gasket 2 is placed in a space formed by the valve body 1 and the stuffing box 8, the four-closing ring 4 is fixed with the valve body 1, the gasket compression ring 3 is placed between the wedge-shaped gasket 2 and the four-closing ring 4 to play a role of protecting the wedge-shaped gasket 2, the stuffing box 8 floats upwards or downwards along with the increase or decrease of the cavity internal pressure in the valve body 1, so that the sealing, the larger the pressure in the cavity in the valve body 1 is, the larger the specific sealing pressure applied to the wedge-shaped sealing gasket 2 is, and the better the sealing performance is. To maintain a seal, this configuration must satisfy: the method comprises the following steps that (1) pre-tightening bolts 6 are tightened to generate pre-tightening force required by pressing the wedge-shaped sealing gasket 2, so that initial specific pressure required by sealing is achieved; (2) at high pressure, the sealing surface is not crushed by the high pressure. In summary, the existing wedge-shaped gasket sealing structure has the following disadvantages: (1) the assembly requirement is high, as shown in the structure of fig. 1, the upper operating space of the bolt assembly is small, and the operation is difficult when pretightening force is applied; (2) the structure is complex, and the field assembly and disassembly are difficult; (3) the low-pressure sealing performance needs to be improved. Therefore, the wedge-shaped gasket combined self-tightening sealing structure of the high-temperature and high-pressure valve shown in fig. 1 needs to be improved, so that the wedge-shaped gasket combined self-tightening sealing structure can meet the assembly requirement and is convenient to operate and apply pre-tightening force.
Disclosure of Invention
The to-be-solved technical problem of the utility model is: how to enable the simple structure of sealing valve, improve the reliability of low pressure leakproofness simultaneously, the convenient maintenance of dismantling.
In order to solve the technical problem, the technical scheme of the utility model a high temperature high pressure valve wedge fills up combination from inseparable sealing device is provided, a serial communication port, including valve body and gland box, be equipped with the sealed pad of carving shape in the space lower part that valve body and gland box formed, the sealed upper portion that fills up of carving shape is equipped with the sealed clamping ring that fills up that can play the guard action, is equipped with four rings on the upper portion of the sealed clamping ring that fills up, is equipped with the clamp plate in the department of being higher than the valve body horizontal plane, and the clamp plate passes through bolt assembly and is connected with the.
Preferably, the four-ring is arranged at the top of the sealing gasket compression ring and fixed in the space between the valve body and the stuffing box.
Preferably, the sealing gasket pressing ring is arranged in a space formed by the valve body and the stuffing box and is connected with the wedge-shaped sealing gasket.
Preferably, the top of the valve body is connected with the bracket.
Preferably, the nut in the bolt assembly is slightly higher than the plane of the valve body.
The utility model discloses an extension pretension bolt assembly's length dimension for the nut is a little higher than a valve body's plane among the bolt assembly, and corresponding horizontal plane has also been done to the clamp plate simultaneously and has raised, and it is limited that pretightning force in-process operating space has been applyed at the scene to this structural improvement solution current structure, and the problem of difficulty is changed in the dismouting. The clamp plate improves on the valve body lumen plane, from this through dismantling bolt assembly, can open the wedge pad combination completely sealed, operating space improves greatly simultaneously, the stuffing box rises along with the rising of valve body lumen internal pressure and floats, thereby the sealed specific pressure increase of wedge sealed pad, valve body lumen internal pressure is big more, apply the sealed specific pressure on the wedge sealed pad big more, then the better effect of sealing performance, even the inside pressure of valve body is lower, the stuffing box floats along with the decline of valve body lumen internal pressure down, because the pretension effect that is connected of bolt assembly and valve body, also can realize reliable sealing, thereby overcome and not improved the relatively poor inherent defect of self sealss performance under the wedge pad combination seal structure low pressure operating mode.
Drawings
FIG. 1 is a prior art wedge-shaped gasket combination self-sealing device for a high-temperature and high-pressure valve;
fig. 2 is the wedge-shaped pad combined self-sealing device of the high-temperature high-pressure valve of the present invention.
Detailed Description
In order to make the present invention more comprehensible, preferred embodiments are described in detail below with reference to the accompanying drawings.
As shown in fig. 2, the high-temperature and high-pressure valve wedge-shaped gasket combination self-sealing device is characterized by comprising a valve body 1 and a stuffing box 8, wherein a wedge-shaped gasket 2 is arranged in a space formed by the valve body 1 and the stuffing box 8, a gasket pressing ring 3 capable of playing a role of protection is arranged at the upper part of the wedge-shaped gasket 2, a four-closing ring 4 is arranged at the upper part of the gasket pressing ring 3 and is fixed in the valve body 1, the four-closing ring 4 is used for generating a large shearing force to act on the upper part of an inner cavity for placing the four-closing ring 4 in the valve body 1, a pressing plate 5 is arranged at a position higher than the horizontal plane of the valve body 1, and the pressing plate 5; the sealing gasket compression ring 3 is arranged in a space formed by the valve body 1 and the stuffing box 8 and is connected with the wedge-shaped sealing gasket 2 and the four-way ring 4, and the top of the valve body 1 is connected with the bracket 7.
As shown in figure 2, the combined self-sealing device of the wedge-shaped pad of the high-temperature and high-pressure valve is characterized in that the length of the bolt assembly 6 is increased, so that a nut in the bolt assembly 6 is slightly higher than the plane of the valve body 1, and meanwhile, the pressing plate 5 is lifted up correspondingly to the horizontal plane.
Specifically place wedge sealed pad 2 in the space that valve body 1 and stuffing box 8 formed, it is fixed between four ring 4 and the valve body 1 to close, and sealed packing clamping ring 3 is placed between wedge sealed pad 2 and four ring 4, plays the effect of protection wedge sealed pad 2. The stuffing box 8 floats upwards or downwards along with the increase or decrease of the internal pressure of the cavity in the valve body 1, so that the specific sealing pressure of the wedge-shaped sealing gasket 2 is increased or decreased, the larger the internal pressure of the cavity in the valve body 1 is, the larger the specific sealing pressure applied to the wedge-shaped sealing gasket 2 is, and the better the sealing performance is.
Further, when the medium pressure further rises, the stuffing box 8 floats upwards along with the rise of the internal pressure of the cavity in the valve body 1, so that the sealing specific pressure of the wedge-shaped sealing gasket 2 is increased, the larger the internal pressure of the cavity in the valve body 1 is, the larger the sealing specific pressure applied to the wedge-shaped sealing gasket 2 is, and the better the sealing performance is.
Meanwhile, even if the pressure in the valve body 1 is low, the stuffing box 8 floats downwards along with the reduction of the internal pressure of the cavity in the valve body 1, and reliable sealing can be realized due to the connected pre-tightening action of the bolt assembly 6 and the valve body 1, so that the inherent defect of poor self-sealing performance under the low-pressure working condition of the wedge-shaped gasket combined sealing structure which is not improved is overcome.
The valve body 1 is correspondingly provided with a step surface structure so as to ensure that the pressure plate 5 is in contact with and supported by the step surface of the valve body 1, and the pressure plate 5 is in contact with the step surface of the valve body 1 to form a bolt-valve body-stuffing box so as to further ensure the sealing performance under the low-pressure working condition.
Claims (5)
1. The utility model provides a high temperature high pressure valve wedge pad combination is from inseparable sealing device, a serial communication port, including valve body (1) and gland box (8), the space lower part that forms at valve body (1) and gland box (8) is equipped with wedges sealed (2), the upper portion of carving sealed pad (2) is equipped with sealed clamping ring (3) that can play the guard action, the upper portion of sealing up clamping ring (3) is equipped with four and closes ring (4), be equipped with clamp plate (5) higher than valve body (1) horizontal plane department, clamp plate (5) are connected with gland box (8) through bolt assembly (6).
2. The combined self-sealing device for the wedge-shaped gasket of the high-temperature and high-pressure valve as claimed in claim 1, wherein the four-ring (4) is arranged on the top of the sealing gasket pressing ring (3) and fixed in the valve body (1).
3. The combined self-sealing device for the wedge-shaped gasket of the high-temperature and high-pressure valve as claimed in claim 1, wherein the gasket pressing ring (3) is arranged in a space formed by the valve body (1) and the stuffing box (8) and is connected with the wedge-shaped gasket (2) and the four-ring (4).
4. A wedge-shaped gasket combined self-sealing device for a high-temperature and high-pressure valve according to claim 1, characterized in that the top of the valve body (1) is connected with a bracket (7).
5. A wedge-shaped gasket combined self-sealing device for high-temperature and high-pressure valves as claimed in claim 1, characterized in that the nut of the bolt assembly (6) is slightly higher than the plane of the valve body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020856130.6U CN212455735U (en) | 2020-05-20 | 2020-05-20 | Wedge-shaped pad combined self-sealing device of high-temperature and high-pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020856130.6U CN212455735U (en) | 2020-05-20 | 2020-05-20 | Wedge-shaped pad combined self-sealing device of high-temperature and high-pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212455735U true CN212455735U (en) | 2021-02-02 |
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ID=74482581
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020856130.6U Active CN212455735U (en) | 2020-05-20 | 2020-05-20 | Wedge-shaped pad combined self-sealing device of high-temperature and high-pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212455735U (en) |
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2020
- 2020-05-20 CN CN202020856130.6U patent/CN212455735U/en active Active
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