Early prediction and detection of slide valve sticking in petrochemical plants or refineries
US-2018275691-A1 · Sep 27, 2018 · US
Valve
US2020200280A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2020200280-A1 |
| Application number | US-201916727257-A |
| Country | US |
| Kind code | A1 |
| Filing date | Dec 26, 2019 |
| Priority date | Dec 25, 2018 |
| Publication date | Jun 25, 2020 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A valve in an embodiment includes: a valve box in which valve box seat portions are provided; and a valve element on which valve element seat portions are provided. One of the valve box seat portion and the valve element seat portion is formed of a build-up material of a Co-based alloy and the other of the valve box seat portion and the valve element seat portion is formed of a build-up material of an Fe-based alloy. Then, a Vickers hardness of the build-up material of the Co-based alloy is larger than a Vickers hardness of the build-up material of the Fe-based alloy and a difference in the Vickers hardness between the build-up material of the Co-based alloy and the build-up material of the Fe-based alloy is HV50 or more.
First claim
Opening claim text (preview).
What is claimed is: 1 . A valve, comprising: a valve box in which valve box seat portion is provided; and a valve element on which valve element seat portion is provided, wherein one of the valve box seat portion and the valve element seat portion is formed of a build-up material of a Co-based alloy, the other of the valve box seat portion and the valve element seat portion is formed of a build-up material of an Fe-based alloy, and a Vickers hardness of the build-up material of the Co-based alloy is larger than a Vickers hardness of the build-up material of the Fe-based alloy and a difference in the Vickers hardness between the build-up material of the Co-based alloy and the build-up material of the Fe-based alloy is HV50 or more. 2 . The valve according to claim 1 , wherein the Vickers hardness of the build-up material of the Fe-based alloy is HV380 or more and HV400 or less. 3 . The valve according to claim 1 to be used in an atomic power plant. 4 . A plant configured using the valve according to claim 1 .
Assignees
Inventors
Classifications
Details · CPC title
Guillotine or blade-type valves, e.g. no passage through the valve member · CPC title
Co as the principal constituent · CPC title
with boron · CPC title
with more than 1.5% by weight of manganese · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2020200280A1 cover?
- A valve in an embodiment includes: a valve box in which valve box seat portions are provided; and a valve element on which valve element seat portions are provided. One of the valve box seat portion and the valve element seat portion is formed of a build-up material of a Co-based alloy and the other of the valve box seat portion and the valve element seat portion is formed of a build-up materia…
- Who is the assignee on this patent?
- Toshiba Kk, Toshiba Energy Systems & Solutions Corp
- What technology area does this patent fall under?
- Primary CPC classification F16K3/0263. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Thu Jun 25 2020 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).