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US 2011/0253702 A1Published application
Apparatus and Method for Post Heat Treating Pipe or Weld Joints
OwnerColin Reganinventor
Life of this patent
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Abstract
An apparatus and method for heating a pipe prior to performing a welding operation, an interpass welding operation, a hydrogen bake-out operation of a weld joint or for post heat-treating of a weld joint is provided. The heating apparatus can include at least one heating collar placed around a pipe or weld joint, and a controller unit for controlling the thermal heat energy transferred from the heating collar to the pipe or weld joint.
Claims27
A heating apparatus for heating a pipe or weld joint, comprising:
- a) at least one heating collar configured for being disposed around the pipe or weld joint;
- b) a controller unit configured for connecting to a source of electrical power, the controller unit operatively coupled to the at least one heating collar and further configured for controlling the supply of electrical power to at least one heating collar;
- c) a contactor disposed in the controller unit for controlling the supply of electrical power to the at least one heating collar;
- and
- d) a digital controller disposed in the controller unit configured for turning the contactor on and off, the digital controller further comprising a program for turning the contactor on and off at predetermined times wherein the at least one heating collar can heat the pipe or weld joint at the predetermined times.
2 more elements
A method for heating a pipe or weld joint, the method comprising the steps of:
- a) providing a heating apparatus, comprising:
- i) at least one heating collar configured for being disposed around the pipe or weld joint,
- ii) a controller unit configured for connecting to a source of electrical power, the controller unit operatively coupled to the at least one heating collar and further configured for controlling the supply of electrical power to at least one heating collar,
- iii) a contactor disposed in the controller unit for controlling the supply of electrical power to the at least one heating collar, and
- iv) a digital controller disposed in the controller unit configured for turning the contactor on and off, the digital controller further comprising a program for turning the contactor on and off at predetermined times wherein the at least one heating collar can heat the pipe or weld joint at the predetermined times;
- b) placing the heating apparatus around the pipe or weld joint;
- c) connecting the heating apparatus to the source of electrical power;
- and
- d) turning on the heating apparatus wherein the pipe or weld joint is heated.
6 more elements
Dependencies are inferred from the claim text.