Outdoor pipeline inflation maintenance device

Abstract

An inflation device for pipeline maintenance comprises an air pump on an inflation (leakage detection) system and a first flange located at a port of an air delivery pipe of the air pump and extending upwards, two tee joints are arranged on a pipeline, valves are arranged on three openings of each tee joint, a second flange matched with the first flange and connected with the first flange in a sealed mode is arranged on one opening of each tee joint, and the second flange is connected with the first flange in a sealed mode. And a pressure sensor is also arranged in the pipeline. During use, the first flange and the second flange are in butt joint, then the three-way opening at the second flange is opened, the air pump is driven to convey air into the pipeline, air pressure change in the pipeline is monitored in real time through the pressure sensor, when air pressure reaches a certain value, the valve of the three-way opening is closed, and after a period of time, the pipeline is closed. The air tightness condition of the pipeline is reflected through the change of the air pressure, the pressure borne by the pipeline relative to normal water flow is large through the arrangement of air, gas is prone to leaking at the weak position of the pipeline, and therefore the detection of the air tightness of the pipeline is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of overhauling of power plant etc especially relates to the field of outdoor passage technology, specifically refers to a kind of outdoor pipeline inflation overhauling device. BACKGROUND

[0002] Various pipelines of power plant are used to transport medium (steam pipeline, wind powder pipeline, heating pipeline, domestic water, industrial water etc.), these pipelines are partially located outdoors under same planning, and are sequentially arranged along radial direction, when leakage exists, or after long period operation, the air tightness of pipeline needs to be detected to ensure air tightness. INVENTION CONTENTS

[0003] The utility model provides a kind of outdoor pipeline inflation overhauling device for the deficiency of prior art, two three-way pipes are arranged in the outdoor part of pipeline, and the air tightness of pipeline is detected by the change of air pressure by the gas into pipeline.

[0004] The utility model is realized by the following technical solutions:

[0005] A kind of outdoor pipeline inflation overhauling device, including overhauling car, gas pump located on overhauling car, and first flange that is upwardly protruding and located in gas pump gas pipe port, pipeline is equipped with two three-way pipes located outdoors, valve is arranged on the three openings of three-way pipe, the second flange that is adapted and sealingly connected with first flange is arranged on one opening of three-way pipe, pressure sensor is further arranged in pipeline.

[0006] The first and the top surface of flange and the bottom surface of second flange are both provided with a plurality of annular first sealing rings.

[0007] The second flange of the outdoor pipeline inflation overhauling device is provided with an inner ring arranged in a ring shape on the inner circumferential surface, the inner ring includes four ring petals arranged in a circumferential direction and sequentially connected at the head and tail, the top surface of the ring petal is hinged to the top surface of the first flange by a hinge, the bottom surface of the second flange with a smaller diameter is provided with a groove corresponding to the hinge, and the head and tail of the ring petal are both provided with an elastic sealing block.

[0008] The top surface of the inner ring of the outdoor pipeline inflation overhauling device is provided with an annular second sealing ring, and the second sealing ring is provided with a break at the connection between the two petals.

[0009] The outdoor pipeline inflation overhauling device is provided with an electric push rod with an upwardly protruding extension end on the overhauling car, and the extension ends of the two electric push rods are fixedly connected to the bottom surface of the first flange.

[0010] The outdoor pipeline inflation overhauling device is provided with a pin plate on the overhauling car, a plurality of pin holes are formed in the ground, and a plurality of second flanges are respectively arranged corresponding to the plurality of pin holes. Advantages

[0011] 1. The utility model discloses a maintenance vehicle is pushed to the outdoor pipeline position, and make the first flange directly opposite the second flange, then close the valve of three -way three openings, then drive the first flange to stretch out upward, make the first flane and the second flane butt joint, then open the three -way opening at the second flane, drive the air pump to transport the air to the pipeline, the pressure sensor real -time monitoring the air pressure change in the pipeline, when the air pressure reaches certain numerical value, close the valve of this three -way opening, after a period of time, the air tightness of pipeline is reacted through the change of air pressure, through the setting of air, the pressure that normal water flow gives pipeline bears is big, gas is easy to leak at the weak place of pipeline, thereby realize the inspection of the air tightness of pipeline, after the inspection is completed, start another three -way opening, make the air from the pipeline exhaust, when discharging, also can take out part of the impurity in the pipeline from the pipeline, also realized the cleaning of pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 It is the schematic diagram of the utility model maintenance vehicle;

[0013] Fig. 2 It is the first flange overhead schematic diagram;

[0014] In the drawing: 1, the first flange, 2, maintenance vehicle, 3, electric push rod, 4, air pump, 5, pin plate, 6, first sealing ring, 7, ring petal, 8, hinge, 9, rubber sealing block, 10, second sealing ring. DETAILED DESCRIPTION

[0015] To clearly illustrate the technical features of the scheme, the following through specific implementation, the scheme is described.

[0016] Referring to the accompanying Figs. 1-2 , the utility model discloses a kind of outdoor pipeline inflation maintenance device, including maintenance vehicle 2, air pump 4 on maintenance vehicle 2, and first flange 1 on the air pump 4 gas pipe port and upward stretch, the electric push rod 3 of stretch end upward on maintenance vehicle 2 is equipped with, the stretch end of two electric push rod 3 is fixedly connected on the bottom surface of first flange 1, the bottom surface of maintenance vehicle 2 is also equipped with universal wheel.

[0017] Maintenance vehicle 2 is equipped with pin plate 5, the ground is opened with a plurality of pin holes, a plurality of pin holes are respectively arranged corresponding with a plurality of second flanges.

[0018] Two three -ways on pipeline are located outdoors, valve is equipped on the three openings of three -way, valve is electronic valve, the second flange of one opening on three -way is equipped with and is sealedly connected with first flange 1, pressure sensor is also equipped in the pipeline.

[0019] The top surface of the first flange and the bottom surface of the second flange are provided with a plurality of annular first sealing rings 6.

[0020] The sealing degree of the first flange and the second flange is ensured by the plurality of sealing rings. The sealing rings mainly located on the first flange are mainly used because the sealing rings are greatly worn due to the long-term outdoor use of the second flange.

[0021] The inner circumferential surface of the second flange is provided with an annular inner ring. The inner ring comprises four annular petals 7 arranged in a circumferential direction and sequentially connected at the head and tail. The top surface of the annular petal 7 is hinged to the top surface of the first flange 1 through a hinge 8. The bottom surface of the small-diameter second flange is provided with a groove corresponding to the hinge 8. The head and tail of the annular petal 7 are provided with elastic sealing blocks 9. The outer circumferential surface of the annular petal 7 is provided with a sealing segment in contact with the inner circumferential surface of the second flange.

[0022] In use, the efficiency of pipeline air intake is different due to the different sizes of pipeline diameters. Therefore, when the pipeline air intake is small, the diameter of the second flange is also small, and part of the second flange is pressed on the top surface of the inner ring, thereby limiting the outward opening of the annular petal. When the second flange has a large diameter, the annular petal is blown open under the driving of air, thereby increasing the air flow opening of the first flange, thereby facilitating the rapid inflation of the pipeline with a large diameter.

[0023] The top surface of the inner ring is provided with an annular second sealing ring 10. The second sealing ring 10 is provided with a break at the connection between the two petals.

[0024] The sealing strength of the second flange with a small diameter and the first flange is further realized by the second sealing ring.

[0025] The maintenance vehicle is provided with electric push rods with the extending ends extending upward. The extending ends of the two electric push rods are fixedly connected to the bottom surface of the first flange.

[0026] The first flange is supported by the electric push rods, so that the first flange is in close contact with the second flange, thereby ensuring the sealing strength of the connection between the two flanges.

[0027] The utility model discloses a first flange 1 is driven to the electric push rod 3 and is driven to the first flange 1 to stretch out upwards, makes the first flange 1 and the butt joint of second flange, then opens the three -way opening at the second flange, drives air pump 4 to deliver air to the pipeline, and the pressure sensor real -time monitoring pressure change in pipeline, when the air pressure reaches certain numerical value, closes the valve of this three -way opening, after a period of time, the air tightness of pipeline is reacted through the change of air pressure, through the setting of air, the pressure that the relative normal water flow gives the pipeline bears is big, and the gas is easy to leak at the weak place of pipeline, thereby realizes the inspection to the air tightness of pipeline, after the inspection is completed, the opening of another three -way is started, and air is arranged from the pipeline, when discharging, also can bring out part of the impurity in the pipeline from the pipeline, also realized the cleaning of pipeline.

Claims

1. An outdoor pipe inflating inspection device, characterized in that: The utility model provides a pipeline maintenance vehicle, a gas pump arranged on the pipeline maintenance vehicle and a first flange arranged on a gas outlet of the gas pump and extending upward, two three-way pipes arranged outside are arranged on the pipeline, valves are arranged on three openings of the three-way pipes, a second flange is arranged on one opening of the three-way pipes and is connected with the first flange, and a pressure sensor is arranged in the pipeline.

2. The outdoor conduit infl ation and maintenance device of claim 1, wherein: A plurality of annular first sealing rings are arranged on top surfaces of the first flange and the second flange.

3. The outdoor conduit infl ation and maintenance device of claim 2, wherein: An inner ring is arranged on an inner circumferential surface of the second flange, the inner ring comprises four ring petals arranged in a circumferential direction and sequentially connected at heads and tails, top surfaces of the ring petals are hingedly connected to the top surface of the first flange, a groove corresponding to the hinge is arranged on a bottom surface of the second flange, and elastic sealing blocks are arranged at the heads and the tails of the ring petals.

4. The outdoor conduit infl ation and maintenance device of claim 3, wherein: A plurality of annular second sealing rings are arranged on top surfaces of the inner ring, and the second sealing rings are provided with breaks at connecting positions of the two ring petals.

5. An outdoor conduit inflating and servicing device according to claim 4, characterized in that: The pipeline maintenance vehicle is provided with electric push rods extending upward, and the electric push rods are fixed to the bottom surface of the first flange.

6. The outdoor conduit infl ation and maintenance device of claim 5, wherein: The pipeline maintenance vehicle is provided with a pin plate, a plurality of pin holes are arranged on the ground, and the plurality of pin holes and the plurality of second flanges are respectively arranged in a corresponding manner.

Images