CN220435558U - High-pressure valve packing gland - Google Patents
High-pressure valve packing gland Download PDFInfo
- Publication number
- CN220435558U CN220435558U CN202322137731.8U CN202322137731U CN220435558U CN 220435558 U CN220435558 U CN 220435558U CN 202322137731 U CN202322137731 U CN 202322137731U CN 220435558 U CN220435558 U CN 220435558U
- Authority
- CN
- China
- Prior art keywords
- cover body
- upper cover
- lower cover
- hollow structure
- packing gland
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012856 packing Methods 0.000 title claims abstract description 24
- 210000004907 gland Anatomy 0.000 title claims abstract description 23
- 229910000906 Bronze Inorganic materials 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 6
- 239000010974 bronze Substances 0.000 claims description 6
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 claims description 6
- 230000007704 transition Effects 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 1
- 230000007774 longterm Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model provides a high-pressure valve packing gland. The utility model comprises an upper cover body and a lower cover body, wherein the upper cover body comprises an upper cover body and a positioning part arranged above the upper cover body, the inside of the upper cover body is of a hollow structure and is used for connecting a valve rod, the bottom of the upper cover body is provided with a connecting groove for accommodating the lower cover body, the upper cover body is in interference fit with the outer wall of the lower cover body through the connecting groove, the inside of the lower cover body is of a hollow structure, and the diameter of the hollow structure of the upper cover body is larger than that of the hollow structure in the lower cover body. According to the utility model, the existing integrated structure is replaced by a split structure with the upper cover body and the lower cover body in interference fit, and the gaps between the upper cover body and the lower cover body are different, so that the inclination compensation is carried out on the valve rod when the fastening packing is uneven in force, the alignment capability of the valve rod is improved, and the valve is not blocked; through the interference between the upper cover body and the lower cover body, the medium is prevented from leaking, and the safety of the valve rod in the high-pressure operation state is ensured.
Description
Technical Field
The utility model relates to the technical field of high-pressure valves of thermal power plants, in particular to a high-pressure valve packing gland.
Background
As shown in fig. 3, the existing valve packing gland is of an integrated structure, and comprises a main body part and a pressing part below, after packing is installed, packing is directly contacted by pressing force, the main body part is pressed down, the packing is kept at a certain position, the existing high-pressure valve packing gland is easy to generate oxide skin between a valve rod and a packing gland in the long-term switch operation process of equipment, so that the valve is blocked, the operation is difficult, the packing gland is easy to wear after long-term operation, the gap is overlarge, and the medium can leak outwards.
Disclosure of Invention
According to the technical problem set forth above, a high pressure valve packing gland is provided. The utility model adopts the following technical means:
the utility model provides a high-pressure valve packing gland, includes upper cover body and lower lid, the upper cover body includes the upper cover body and sets up in the location portion of upper cover body top, the inside hollow structure that is of upper cover body for connect the valve pole, the spread groove that holds the lower lid has been seted up to upper cover body bottom, the upper cover body passes through spread groove and lower cover body's outer wall interference fit, the inside hollow structure that is of lower cover body, the diameter of the hollow structure of upper cover body is greater than the inside hollow structure's of lower cover diameter.
Further, the depth of the connecting groove is the same as the height of the lower cover body.
Further, the upper surface of the positioning part is an inclined downward surface, the lower surface of the positioning part is an inclined upward surface, the upper surface and the lower surface are connected through a middle transition section, the end part of the upper surface is arranged at the hollow structure inside the upper cover body, and a certain distance exists between the vertical surface of the end part of the lower surface and the vertical surface of the outer circumferential surface of the connecting groove.
Further, the interference of the upper cover body and the lower cover body is 0.065+/-0.02 mm.
Further, the diameter of the hollow structure of the upper cover body is 0.3-0.5 mm larger than that of the hollow structure inside the lower cover body.
Further, the lower cover body is made of tin bronze.
The utility model has the following advantages: according to the utility model, the existing integrated structure is replaced by a split structure with the upper cover body and the lower cover body in interference fit, and the gaps between the upper cover body and the lower cover body are different, so that the inclination compensation is carried out on the valve rod when the fastening packing is uneven in force, the alignment capability of the valve rod is improved, and the valve is not blocked; through the interference between the upper cover body and the lower cover body, the medium is prevented from leaking, and the safety of the valve rod in the high-pressure operation state is ensured.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
FIG. 1 is a schematic view of the structure of the upper cover of the present utility model.
Fig. 2 is a schematic view of the structure of the lower cover of the present utility model.
Fig. 3 is a schematic diagram of a prior art packing gland.
In the figure: 1. a positioning part; 2. an upper cover body; 3. a hollow structure of the upper cover body; 4. a connecting groove; 5. a lower cover; 6. the lower cover body is of a hollow structure.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in fig. 1 and fig. 2, the embodiment of the utility model discloses a high-pressure valve packing gland, which comprises an upper cover body and a lower cover body, wherein the upper cover body comprises an upper cover body 2 and a positioning part 1 arranged above the upper cover body, the interior of the upper cover body is a hollow structure 3 for connecting a valve rod, a connecting groove 4 for accommodating the lower cover body is formed in the bottom of the upper cover body, the upper cover body is in interference fit with the outer wall of the lower cover body 5 through the connecting groove, a hollow structure 6 is arranged in the lower cover body, and the diameter of the hollow structure of the upper cover body is larger than that of the hollow structure in the lower cover body. Through interference fit's mode, prevent that the structure from taking place the skew in the operation.
Further, the depth of the connecting groove is the same as the height of the lower cover body.
Further, the upper surface of the positioning part is an inclined downward surface, the lower surface of the positioning part is an inclined upward surface, the upper surface and the lower surface are connected through a middle transition section, the end part of the upper surface is arranged at the hollow structure inside the upper cover body, and a certain distance exists between the vertical surface of the end part of the lower surface and the vertical surface of the outer circumferential surface of the connecting groove.
Further, the interference of the upper cover body and the lower cover body is 0.065+/-0.02 mm, the gap between the inner holes of the lower cover is small, and the tightness of the cover is ensured.
Further, the diameter of the hollow structure of the upper cover body is 0.3-0.5 mm larger than that of the hollow structure in the lower cover body, and the gap between the inner holes of the upper gland is large, so that the inclination compensation amount is ensured.
Further, the lower cover body is made of tin bronze, and the lower gland made of tin bronze is matched with the upper gland, so that the packing gland has a self-lubricating and wear-resisting effect. The tin bronze has high price, and the upper cover body without the gland can be manufactured without the tin bronze, so that the expected effect can be achieved, and the cost is saved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and not for limiting the same; although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the utility model.
Claims (6)
1. The utility model provides a high-pressure valve packing gland, its characterized in that, includes upper cover body and lower cover body, the upper cover body includes the upper cover body and sets up in the location portion of upper cover body top, the inside hollow structure that is of upper cover body for connect the valve pole, the spread groove that holds the lower cover body has been seted up to upper cover body bottom, the upper cover body passes through spread groove and the outer wall interference fit of lower cover body, the inside hollow structure that is of lower cover body, the diameter of the hollow structure of upper cover body is greater than the diameter of the inside hollow structure of lower cover body.
2. The high pressure valve packing gland of claim 1, wherein the depth of the connecting groove is the same as the height of the lower cover.
3. The high-pressure valve packing gland according to claim 1, wherein the upper surface of the positioning part is an inclined downward surface, the lower surface of the positioning part is an inclined upward surface, the upper surface and the lower surface are connected through an intermediate transition section, the end part of the upper surface is arranged at the hollow structure inside the upper cover body, and a certain distance exists between a vertical plane where the end part of the lower surface is located and a vertical plane where the outer circumferential surface of the opened connecting groove is located.
4. The high pressure valve packing gland of claim 1, wherein the upper and lower cover bodies have an interference of 0.065 ± 0.02mm.
5. The high pressure valve packing gland of claim 1, wherein the diameter of the hollow structure of the upper cover body is 0.3-0.5 mm greater than the diameter of the hollow structure of the lower cover body.
6. The high pressure valve packing gland of claim 1, wherein the lower cover body is of tin bronze material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322137731.8U CN220435558U (en) | 2023-08-09 | 2023-08-09 | High-pressure valve packing gland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322137731.8U CN220435558U (en) | 2023-08-09 | 2023-08-09 | High-pressure valve packing gland |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220435558U true CN220435558U (en) | 2024-02-02 |
Family
ID=89692808
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322137731.8U Active CN220435558U (en) | 2023-08-09 | 2023-08-09 | High-pressure valve packing gland |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220435558U (en) |
-
2023
- 2023-08-09 CN CN202322137731.8U patent/CN220435558U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |