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 a gland packing area of the valve, the attaching being performed through friction bonding;
operably attaching an isolation gate to the boss;
operably attaching a drill guide gate to the isolation gate;
operably attaching an injection pump to the drill guide gate;
closing the isolation gate;
closing the drill guide gate;
sealing the isolation gate and the drill guide gate and joints between the isolation gate and the drill guide from leakage by injecting a sealant from the injection pump into the drill guide gate;
opening the isolation gate;
sealing the joint between the isolation gate and the boss and testing the quality of the injection system, including a boss attachment, before drilling into the valve, by injecting the sealant through the isolation gate and into the boss using the injection pump;
inserting a drill bit into the drill guide until the drill bit makes contact with the drill guide gate;
tightening a collet of the drill guide 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 or endangering a repair technician at this stage and during subsequent actions;
injecting sealant with the injection pump;
withdrawing the drill bit to a point just past the drill guide gate;
closing the drill guide gate;
maintaining a sealant pressure in the injection system that is greater than or equal to the pressure in the valve during the withdrawing the drill bit and during the closing the drill guide gate;
injecting sealant into the gland packing area through use of the injection pump;
closing the isolation gate when a sufficient amount of sealant is injected into a valve stem;
leaving the isolation gate in a closed position, connected to the boss, to maintain a seal for a drill hole; and
applying pressure to the gland packing to ensure a seal on the valve stem by retightening gland follower retaining nuts.
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 pump.
3 . The method of claim 1 , further comprising:
creating an expansion region for sealant in the gland packing area by loosening the 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 two sealing actions are performed simultaneously and the opening of the isolation gate is performed before the sealing actions.
8 . 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 gland packing of the valve, the attaching being performed through friction bonding;
maintaining a sealed injection system while a drill bit drills through a wall of the valve;
maintaining the sealed injection system during valve sealing until the drill bit is removed from the valve;
leaving an isolation gate in a closed position, connected to the boss, to maintain a seal for a drill hole; and
applying pressure to the gland packing to ensure a seal on the valve by retightening gland follower retaining nuts.
9 . The method of claim 8 , wherein maintaining the sealed injection system during valve sealing until the drill bit is removed from the valve further comprises:
applying a sealant pressure to the injection system that is equal to or greater than the pressure in the valve;
withdrawing the drill bit to a point just past a drill guide gate;
closing the drill guide gate;
injecting sealant into the gland packing area through use of an injection pump; and
closing the isolation gate when a sufficient amount of sealant is injected into the valve.
10 . The method of claim 8 , wherein maintaining the sealed injection system while the drill bit drills through the wall of the valve further comprises:
operably attaching the isolation gate to the boss;
operably attaching a drill guide gate to the isolation gate;
operably attaching an injection pump to the drill guide gate;
closing the isolation gate;
closing the drill guide gate;
sealing the isolation gate and the drill guide gate and joints between the isolation gate and the drill guide from leakage by injecting a sealant from the injection pump into the drill guide gate;
opening the isolation gate;
sealing the joint between the isolation gate and boss;
testing the quality of the injection system, including a boss attachment by injecting the sealant through the isolation gate and into the boss using the injection pump;
inserting the drill bit into the drill guide until the drill bit makes contact with the drill guide gate;
sealing the drill bit by tightening a collet of the drill guide around the drill bit;
opening the drill guide gate; and
drilling the drill bit through the sealant and through the boss until the drill bit penetrates the wall of the valve, through use of a non-sparking pneumatic drill, preventing any hazardous chemicals from escaping or endangering a repair technician at this stage and during subsequent actions.
11 . The method of claim 10 , wherein operably attaching the isolation gate to the boss further comprises:
operably attaching the drill guide gate to the isolation gate, and operably attaching the injection pump to the drill guide gate further comprises:
operably attaching the injection system to the boss.
12 . An injection system comprising:
a drill guide gate; and
an isolation gate attached to the drill guide gate.
13 . The injection system of claim 12 , wherein a drill guide is attached to the drill guide gate and wherein an end of the drill guide that is not attached to the drill guide gate further comprises:
a collet.
14 . The injection system of claim 12 , wherein drill guide gate further comprises:
a first passageway and a second passageway, the second passageway intersecting the first passageway at an intersection, each of the passageways having a first end and a second end;
the first passageway having a first gate stem, the gate stem being positioned between the second end of the first passageway and the intersection;
the second passageway having a complimentary intersection with the drill guide gate, the complimentary intersection with the drill guide gate being positioned between the second end of the second passageway and the intersection; and
the first end of the first passageway having a complimentary interface to the isolation gate.
15 . The injection system of claim 12 , wherein drill guide gate is attached to the isolation gate through complimentary male-female interfaces.
16 . The injection system of claim 12 , wherein drill guide gate is attached to the isolation gate through threaded interfaces.
17 . The injection system of claim 12 , wherein each of the drill guide gate and the isolation gate further comprise:
a gate stem.
18 . The injection system of claim 12 , wherein the drill guide gate further comprises:
a gate stem.
19 . The injection system of claim 12 , further comprising:
an injection pump operably attached to the drill guide gate.