VALVE POSITIONER

• US 20180149286A1
• Filed: 05/20/2016
• Published: 05/31/2018
• Est. Priority Date: 05/22/2015
• Status: Active Grant

• Current Assignee: Neles Finland OY (Neles Oyj)
• Original Assignee: Metso Flow Control Oy (Neles Oyj)
• Inventors: IHALAINEN, Tero, YLI-PETYS, Juha
• Granted Patent: US 10,317,718 B2
• Time in Patent Office: Days
• CPC Class Codes: A01G 25/16 Control of watering
• CPC Class Codes: F16K 31/12 actuated by fluid fluid-actuated lift valves F16K1/126 ; fluid-actuated check valves F16K15/00; fluid-actuated safety valves F16K17/00
• CPC Class Codes: F16K 37/0025 Electrical or magnetic means F16K37/0075 takes precedence
• CPC Class Codes: F16K 37/0041 for measuring valve parameters F16K37/0033 takes precedence
• CPC Class Codes: G02F 1/13338 Input devices, e.g. touch panels
• CPC Class Codes: G05B 19/106 for selecting a programme, variable or parameter
• CPC Class Codes: G05B 2219/2625 Sprinkler, irrigation, watering
• CPC Class Codes: G05D 7/06 characterised by the use of electric means G05D7/005 takes precedence
• CPC Class Codes: G05D 7/0623 characterised by the set value given to the control element
• CPC Class Codes: G06F 3/0383 Signal control means within the pointing device
• CPC Class Codes: Y10T 137/6851 With casing, support, protector or static constructional installations
• CPC Class Codes: Y10T 137/7043 Guards and shields
• CPC Class Codes: Y10T 137/7131 Common lock and valve actuator

Abstract

A smart valve positioner is provided with a local user interface with but-tons and a display inside a positioner housing under a housing cover for locally operating the valve positioner. The valve positioner is further provided with a detector detecting whether the housing or the housing cover is open or closed. The operation mode of the local user interface is configured to be different depending on whether the housing or housing cover is open or closed. For example, a larger variety of operations may be available when the housing or housing cover is open.

Claims

1. A smart valve positioner comprising a housing and a housing cover, the housing encompassing control circuitry connectable to a field control line, and a local user interface with one or more buttons and optionally a display for operating the valve positioner, wherein the valve positioner further comprises an open-close detector detecting whether the housing or the housing cover is open or closed, and the operation mode of the local user interface is configured to be different depending on whether the housing or housing cover is open or closed.

2. A smart valve positioner as claimed in claim 1, wherein the open-close detector comprises electrical, optical or mechanical detector means for detecting whether the housing or the housing cover is opened or closed.

3. A smart valve positioner as claimed in claim 1, wherein the open-close detector comprises an optical switch, a mechanical switch, a Hall sensor or a Reed switch.

4. A smart valve positioner as claimed in claim 1, wherein the open-close detector comprises at least one magnetic element and a sensor arranged detect the presence of the magnetic element, the sensor and the magnetic element being arranged to be close to each other when the housing or housing cover is closed, and to move apart when the housing or the housing cover is opened.

5. A smart valve positioner as claimed in claim 1, wherein the valve positioner with the housing or the housing cover closed is configured to assume for the local user interface a first user access mode level as a default to thereby allow use of the buttons of the user interface for a first set of user operations, and wherein the valve positioner with the housing or the housing cover opened is configured to assume for the local user interface a further access user access mode level to thereby allow use of the buttons of the local user interface for one or more further sets of user operations.

6. A smart valve positioner as claimed in claim 1, wherein the valve positioner is configured to assume for the local user inter-face the further user access mode level automatically for a predetermined period of time upon connecting a power to the valve positioner, and wherein the first user access mode level is resumed after expiry of the predetermined period of time from the connection of the power.

7. A smart valve positioner as claimed in claim 1, wherein the valve positioner is configured to maintain a log on openings of the housing or the housing cover, and/or to record actions made with the housing or the housing cover open, and/or to generate an alarm in response to detecting opening of the housing or housing cover.

8. A smart valve positioner as claimed in claim 1, wherein the buttons of the local user interface are user-operable from outside the housing without opening the housing or the housing cover.

9. A smart valve positioner as claimed in claim 1, wherein the local user interface comprises non-mechanical touch buttons enclosed inside the housing, and wherein the touch buttons are user-operable by touching the touch buttons when the housing cover is open, and the housing cover is arranged to make the touch buttons to be user-operable from outside the housing by touching the housing cover, when the housing cover is closed.

10. A smart valve positioner as claimed in claim 1, wherein the touch buttons comprise optical touch buttons or capacitive touch buttons.

11. A smart valve positioner as claimed in claim 8, wherein the valve positioner with the housing cover closed is configured to assume for the local user interface a first user access mode level as a default to thereby allow use of the touch buttons through the housing cover for a first set of user operations, and wherein the valve positioner with the housing cover open is configured to assume for the local user interface a further user access mode level to thereby allow use of the non-touch buttons directly on the local user interface for one or more further sets of user operations.

12. A smart valve positioner as claimed in claim 1, wherein said first set of user operations include reading operations, and said one or more further sets of user operations include reading operations and procedures for locally controlling parameters and operation of the smart valve positioner.

13. A valve assembly comprising

a valve;

an actuator; and

a valve positioner;

the valve positioner further comprising a housing and a housing cover, the housing encompassing control circuitry connectable to a field control line, and a local user interface with one or more buttons and optionally a display for operating the valve positioner, wherein the valve positioner further comprises an open-closed detector detecting whether the housing or the housing cover is open or closed, and the operation mode of the local user interface is configured to be different depending on whether the housing or housing cover is open or closed.

14. (canceled)