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US 8,474,334 B2Granted
Process valve including a force measuring device
AssigneeSamson Aktiengesellschaft
InventorsJoerg Kiesbauer, Stefan Kolbenschlag, Karl-Bernd Schaertner
Life of this patent
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Abstract
The invention relates to a process valve (10) comprising a valve seat (14), a flow restrictor (12), a valve rod (16) and a drive unit (18) acting thereon, with a force measuring device (20, 44) being connected between said drive unit (18) and said flow restrictor (12). The invention is characterized in that said force measuring device (49) includes a spring (30, 46), and said force measuring device (29, 44) comprises a travel measuring device (38, 42, 50, 52) so as to allow the force acting on it to be determined based on the change in the deflection of the spring (30, 46) caused by the force acting on it.
Claims8
A process valve, comprising:
- a valve seat;
- a flow restrictor;
- a valve rod;
- a drive, said drive moves said valve rod;
- a force measuring device connected between said drive and said flow restrictor, said force measuring device determining the force required to move said flow restrictor;
- said force measuring device includes a spring, said spring includes an S-shaped body with recesses therein, and, said S-shaped body of said spring includes a lower leg and a central leg;
- said force measuring device includes a travel measuring device;
- said travel measuring device includes a mechanical travel transmitter, said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring, and, compression or extension of said S-shaped body of said spring deflects said mechanical travel transmitter;
- said travel measuring device includes a measuring point and a reference point;
- said travel measuring device measures change in position of said measuring point with respect to said reference point;
- and,
- said force measuring device determining said force by change in said deflection of said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring.
9 more elements
A process valve, comprising:
- a valve seat;
- a flow restrictor;
- a valve rod;
- a drive, said drive moves said valve rod;
- said valve rod includes a first portion and a second portion;
- a force measuring device resides between said first portion and second portion of said valve rod, said force measuring device determining the force required to move said flow restrictor;
- said force measuring device includes a spring, said spring includes an S-shaped body with recesses therein, and, said S-shaped body of said spring includes a lower leg and a central leg;
- said force measuring device includes a travel measuring device;
- said travel measuring device includes a mechanical travel transmitter, said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring, and, compression or extension of said S-shaped body of said spring deflects said mechanical travel transmitter;
- said travel measuring device includes a measuring point and a reference point;
- said travel measuring device measures change in position of said measuring point with respect to said reference point;
- and,
- said force measuring device determining said force by change in said deflection of said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring.
10 more elements
A process valve, comprising:
- a valve seat;
- a flow restrictor;
- a valve rod;
- a drive, said drive moves said valve rod;
- a force measuring device connected between said drive and said valve rod, said force measuring device determining the force required to move said flow restrictor;
- said force measuring device includes a spring, said spring includes an S-shaped body with recesses therein, and, said S-shaped body of said spring includes a lower leg and a central leg;
- said force measuring device includes a travel measuring device;
- said travel measuring device includes a mechanical travel transmitter, said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring, and, compression or extension of said S-shaped body of said spring deflects said mechanical travel transmitter;
- said travel measuring device includes a measuring point and a reference point;
- said travel measuring device measures change in position of said measuring point with respect to said reference point;
- and,
- said force measuring device determining said force by change in said deflection of said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring.
9 more elements
A process valve, comprising:
- a valve seat;
- a flow restrictor;
- a valve rod;
- a drive, said drive moves said valve rod;
- a force measuring device connected between said flow restrictor and said valve rod, said force measuring device determining the force required to move said flow restrictor;
- said force measuring device includes a spring, said spring includes an S-shaped body with recesses therein, and, said S-shaped body of said spring includes a lower leg and a central leg;
- said force measuring device includes a travel measuring device;
- said travel measuring device includes a mechanical travel transmitter, said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring, and, compression or extension of said S-shaped body of said spring deflects said mechanical travel transmitter;
- said travel measuring device includes a measuring point and a reference point;
- said travel measuring device measures change in position of said measuring point with respect to said reference point;
- and,
- said force measuring device determining said force by change in said deflection of said mechanical travel transmitter braced between said lower leg and said central leg of said S-shaped body of said spring.
9 more elements
Dependencies are inferred from the claim text.