Valve, pipe and pipe component repair
In some implementations, an injection system that injects sealant into a pipe, pressure component or valve while containing the pipe, pressure component or valve repair that significantly reduces or eliminates release of hazardous material from inside the pipe, pressure component valve or injection system and thus significantly reduces emission of the hazardous material from inside the pipe, pressure component or valve into the environment and protecting the repair technicians.
1. A method of repairing a valve through use of an injection system, the method comprising:
attaching a boss to the valve near an area of a gland packing in the valve, the attaching being performed through friction bonding;
operably attaching to the injection system, an injection pump through a hose, the boss, an isolation gate, a drill guide gate and an injection gate;
opening the injection gate;
closing the isolation gate;
closing the drill guide gate;
sealing the isolation gate, the injection gate and the drill guide gate and joints between the isolation gate, the injection gate and the drill guide gate from leakage by injecting a sealant from the injection pump into the injection gate;
opening the isolation gate;
testing the quality of the injection system, including a boss attachment, before drilling into the valve, by injecting the sealant from the injection pump through the isolation gate and into the boss;
closing the injection gate;
inserting a drill bit into the drill guide gate;
tightening a collet of the drill guide gate around the drill bit to provide a seal of the drill bit;
opening the drill guide gate;
through use of a non-sparking pneumatic drill, drilling the drill bit through the sealant and through the boss until the drill bit penetrates a wall of the valve, preventing any hazardous chemicals from escaping into the environment or endangering a repair technician at this stage and during subsequent actions;
opening the injection gate;
re-pressurizing the injection system to a pressure equal to or greater than the pressure in the valve;
withdrawing the drill bit to a point just past the drill guide gate;
closing the drill guide gate;
injecting sealant into the area of the gland packing through use of the injection pump; and
closing the isolation gate when a sufficient amount of sealant is injected into a valve stem.
2. The method of claim 1 , further comprising:
changing a rate of flow of sealant into a void left behind in the sealant as the drill bit is withdrawn by manipulation of the injection gate.
3. The method of claim 1 , further comprising:
creating an expansion region for sealant in the area of the gland packing by loosening gland follower retaining nuts.
4. The method of claim 1 , wherein attaching the boss further comprises:
a non-ignition, non-penetrating bonding technique including friction welding, friction bonding, inertia welding, ultrasonic bonding, cold bonding, diffusion welding and applying adhesives.
5. The method of claim 1 , wherein the gland packing further comprises:
a soft and firm, rope-like material that seals the valve from leaking.
6. The method of claim 1 , wherein the valve is in-service.
7. The method of claim 1 , wherein the sealing of the isolation gate and the testing of a quality of the injection system is performed simultaneously and the opening the isolation gate is performed before the sealing the isolation gate and the testing the quality of the injection system.