Apparatus for filling gauge and sensor protectors with pressure transmitting fluid, diaphragm housing used therefor, and method using such apparatus
First Claim
1. An apparatus for filling gauge and sensor protectors with pressure transmitting fluid, comprising:
- tubing having a small inner diameter, sufficient thickness and strength to prevent the tubing from being affected by pressure, and a predetermined length;
a connector connected to an inner end of a first side of the tubing;
a syringe filled with filling fluid and connected to an outer end of a first branch of a second side of the tubing;
a vacuum pump connected to an outer end of a second branch of the second side of the tubing;
a fluid trap container situated at a position of the tubing 1 between both ends of the second branch of the second side of the tubing; and
first, second, third and fourth solenoid valves disposed on the first branch of the second side of the tubing at a position between both ends of the first branch, on a drain tube connected to a portion of the second branch of the second side of the tubing between the vacuum pump and the fluid trap container, on the second branch of the second side of the tubing at a position inside of the fluid trap container, and on a first side of the tubing at a position between both ends of the first side, respectively.
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Accused Products
Abstract
Disclosed herein is an apparatus for filling gauge and sensor protectors with pressure transmitting fluid, diaphragm housing used therefor and method using such an apparatus. The apparatus includes tubing. A connector is connected to the inner end of the first side of the tubing. A syringe is filled with filling fluid and connected to the outer end of a first branch of the second side of the tubing. A vacuum pump is connected to the outer end of the second branch of the second side of the tubing. A fluid trap container is situated at a position of the tubing between both ends of the second branch of the second side of the tubing. First, second, third and fourth solenoid valves are disposed on the first branch of the second side of the tubing at a position between both ends of the first branch, on a drain tube connected to a portion of the second branch of the second side of the tubing between the vacuum pump and the fluid trap container, on the second branch of the second side of the tubing at a position inside of the fluid trap container, and on the first side of the tubing at a position between both ends of the first side, respectively.
10 Citations
8 Claims
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1. An apparatus for filling gauge and sensor protectors with pressure transmitting fluid, comprising:
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tubing having a small inner diameter, sufficient thickness and strength to prevent the tubing from being affected by pressure, and a predetermined length;
a connector connected to an inner end of a first side of the tubing;
a syringe filled with filling fluid and connected to an outer end of a first branch of a second side of the tubing;
a vacuum pump connected to an outer end of a second branch of the second side of the tubing;
a fluid trap container situated at a position of the tubing 1 between both ends of the second branch of the second side of the tubing; and
first, second, third and fourth solenoid valves disposed on the first branch of the second side of the tubing at a position between both ends of the first branch, on a drain tube connected to a portion of the second branch of the second side of the tubing between the vacuum pump and the fluid trap container, on the second branch of the second side of the tubing at a position inside of the fluid trap container, and on a first side of the tubing at a position between both ends of the first side, respectively. - View Dependent Claims (2, 3, 4)
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5. A method for filling pressure gauges and sensors with pressure transmitting fluid, comprising the steps of:
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vacuuming interior spaces communicating with an upper chamber of a diaphragm housing, which includes an interior of a pressure gauge;
filling the interior spaces with the pressure transmitting fluid by allowing the vacuous interior spaces to communicate with a syringe filled with the pressure transmitting fluid by control means;
upwardly curving a diaphragm of the diaphragm housing downwardly curved in said vacuuming step by pressurizing the pressure transmitting fluid and filling the upper chamber with the pressure transmitting fluid by means of the rotation of a piston of the syringe; and
minutely adjusting the pressure of the pressure transmitting fluid by inversely rotating the piston of the syringe so as to allow the pressure gauge to indicate zero.
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6. A diaphragm housing, comprising:
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a housing;
a diaphragm situated in the center portion of the housing for dividing an interior of the housing into lower and upper chambers; and
a nipple having a check valve function, said nipple being mounted on one side of an upper portion of the housing to communicate with the upper chamber. - View Dependent Claims (7, 8)
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Specification