Pipeline pressure measuring device

Abstract

The invention discloses a pipeline pressure measuring device which comprises a reversing five-way joint (2), an exhaust control valve (5), a water injection control valve (6), a right flow guide control valve (7), a pressure gauge (8), a pressure control valve (11) and a left flow guide control valve (12); the lower side of the reversing five-way joint (2) is respectively connected with the left flow guide control valve (12) and a right flow guide control valve (7); the pressure control valve (11) and the exhaust control valve (5) are respectively mounted at left and right ports of the upper side of the reversing five-way joint (2); the pressure gauge (8) is connected to the pressure control valve (11) on the upper left side of the reversing five-way joint (2), a combined type high-speed air inlet and outlet valve (4) is installed on the n exhaust control valve (5) on the upper right side of the reversing five-way joint (2), and the water injection control valve (6) is installed on a port on the right side of the reversing five-way joint (2). According to the pressure measuring device, a pressure measuring experiment is simpler, the pressure measuring device is directly preassembled or replaced at an original valve well in a pipeline, the cost can be greatly reduced, and energy conservation and environmental protection are achieved.

Description

technical field [0001] The invention relates to a pipeline pressure measurement technology. The equipment is placed at the valve well of the pipeline, and water is injected into the pipeline from a water injection port on the device, and the pressure measurement experiment is carried out by pressurization. Background technique [0002] The steps of the method used in the existing pressure measurement experiment (a pipeline not exceeding 1 kilometer is a pressure test pipe section) are as follows [0003] 1. When installing the pipeline, reserve the position of the pressure measuring steel pipe on the coaxial line. 2. The steel pipe that has been welded in advance is cut and positioned at the construction site, and the flanges are welded at both ends (the flange needs to be welded on the Manholes are opened on both sides for inner wall welding and closed after welding). 3. Open holes on the top of the piezometric steel pipe and weld the flanged steel pipe, and then hoist the...

AI Technical Summary

Problems solved by technology

3. Open holes on the top of the piezometric steel pipe and weld the flanged steel pipe, and then hoist the pipe. 4. Concrete support piers are poured on the middle section of the piezometric steel pipe. ) After connecting the gate valve, connect the water injection equipment. 6. Start water injection and pressurization at the left section of the veneer plate. 8. Start water injection and pressurization at the right section of the veneer. 9. After the pressure test of the right section of the veneer is completed, release the water from the next port. The flanged steel pipe and the inner stuffy plate of the pipeline are cut off, the manhole and the flanged steel pipe are welded and sealed after completion, and backfilling (completed) is carried out after anti-rust treatment. The existing pressure measurement method can only perform single-stage pressure measurement, and the process is complicated and difficult to operate. large and cost prohibitive

Images