CN201382240Y - Hinged type dual-layer corrugated compensator with detection connectors - Google Patents

Abstract

A hinged type dual-layer corrugated compensator with detection connectors belongs to the field of corrugated compensation devices for pipelines and resolves the problem of monitoring and detecting leakage of dual-layer corrugated pipes. The hinged type dual-layer corrugated compensator is characterized in that straight pipe sections at two ends of an outer-layer corrugated pipe (3) of a dual-layer corrugated pipe (8) are respectively equipped with holes (1), and the detection connectors (2) are in overhung welding on the holes (1), the connectors are simultaneously welded with retainer rings (4) of reinforcing rings (5) on end sides. When in application, the two detection connectors (2) are respectively used as an inlet and an outlet for detecting gas, and a pressure gauge and a pressure alarm are arranged in a pipe connecting line, thereby forming a detection system. The detection system can monitor at any time and discover leakage of the outer-layer corrugated pipes or/ and inner-layer corrugated pipes, especially leakage of inner-layer corrugated pipes in time according to pressure variation of detected gas, thereby bringing convenience for operators to take measures to reduce economic loss. The tension bar dual-layer corrugated compensator is particularly adaptable to pipelines for delivering high-temperature high-pressure fluid media in the petrochemical industry.

Description

Band detects the double-deck FlexbleJoint of hinge type of interface

Technical field

The utility model belongs to the ripple compensation apparatus field that pipeline is used, and relates to a kind of with the double-deck FlexbleJoint of the hinge type that detects interface.

Background technique

In the prior art, in petroleum chemical industry, carry high temperature, high-pressure fluid medium, particularly in the pipeline of liquid medium, extensively adopt the double-ply bellows compensator of the strong ring of hinge type band, hereinafter to be referred as the double-deck FlexbleJoint of hinge type, in order to the angular displacement of compensation pipes, its advantage is, rigidity is little, and flexible big, displacement amount is big, compensation ability is strong, deficiency is, skin or/and the leakage of internal layer bellows be difficult in time being found, in case double-ply bellows leaks, mean that then compensation intensity die-offs, be easy to break, can not in time change, can have a strong impact on production as no spare part, and at present, still do not have effective leakage to double-ply bellows and monitor detection method.

Summary of the invention

The technical problem that solves:

For the double-ply bellows in the compensator installs the detection interface additional, and by taking over circuit formation detection system, feed the level pressure detected gas to detection system, can detect the leakage of double-ply bellows, can overcome the deficiencies in the prior art, can monitor and detect the skin of double-ply bellows at any time or/and whether internal layer leaks, carry out to change and prepare, reduce economic loss.

The technological scheme that adopts:

Band detects the double-deck FlexbleJoint of hinge type of interface, double-ply bellows and linkage with connecting tube, band stiffening ring, it is characterized in that: perforate respectively on the two ends straight section of the outer bellows of double-ply bellows, and the overhanging formula of welding detects interface on the hole, and the detection interface passes the ring washer in order to fixing distolateral stiffening ring on the outer wall that is welded in connecting tube.

Beneficial effect:

Detection interface on the one end straight length of outer bellows is as the detected gas import, detection interface on the other end straight length exports as detected gas, detected gas is the nitrogen of pressure 0.5～0.6MPa, nitrogen is entered by the detected gas import and behind the interlayer gap of outer, internal layer bellows, gas outlet is connected to monitoring chamber after testing, take on the circuit pressure gauge and pressure alarm are housed, constitute detection system; In the supervision, nitrogen feeds detection system, normal condition, the pressure gauge indication is normal, and pressure alarm is failure to actuate, if outer bellows leaks, then pressure descends, and serious the leakage is to making pressure drop to the low alarm setting value of pressure alarm, then pressure alarm is reported to the police at once, if the internal layer bellows leaks, then pressure rises, the serious leakage, to making pressure rise to the high alarm setting value of pressure alarm, then pressure alarm is reported to the police at once; Therefore, can easily monitor at any time and in time find skin or/and internal layer that especially the leakage of internal layer bellows is in time adopted an effective measure, and prepares the compensator spare part, changing early, or regulate and produce, reduce economic loss; Simple in structure, enforcement convenience, effective are particularly useful in the petroleum chemical industry, carry the pipeline of high temperature, high-pressure fluid medium.

Description of drawings

Fig. 1, main assembly structural representation;

Fig. 2, press the amplification I figure shown in Fig. 1;

Fig. 3, press the A shown in Fig. 2 to view;

Fig. 4, detected gas import, exporter's bitmap;

Detection system schematic representation in Fig. 5, the application;

Embodiment

Further explanation in detail in conjunction with the accompanying drawings;

Shown in the figure, double-head arrow is shown the mobile direction of flowing medium, and single arrow is shown the detected gas flow direction; The 9-guide shell, 10-linkage, 14-detected gas inlet valve, 15-detected gas outlet valve;

Shown in Fig. 1～3, perforate 1 respectively on the two ends straight length of the outer bellows 3 of the double-ply bellows 8 of band stiffening ring 6 in the double-deck FlexbleJoint of hinge type, the overhanging formula of welding detects interface 2 on hole 1, detect interface 2 and also weld together in order to the ring washer 4 of fixing distolateral stiffening ring 5 simultaneously with on the outer wall that is welded in connecting tube 7, in order to improving the join strength that detects interface 2.

As shown in Figure 4, respectively there is one to detect interface 2 on the two ends straight length of the outer bellows 3 of double-ply bellows 8, detection interface 2 on one end is as the detected gas import, detection interface 2 on the other end is as the detected gas outlet, and the detected gas import is 180 degree with outlet mutually at the nozzle orientation that double-ply bellows 8 footpaths make progress.

As shown in Figure 5, detection system is as follows in the application, detected gas is the nitrogen of pressure 0.5～0.6MPa, nitrogen is entered by the detected gas import and through skin, behind the interlayer gap of internal layer bellows, gas outlet is connected to monitoring chamber after testing, take on the circuit 11 pressure gauge 12 and pressure alarm 13 are housed, in the supervision, nitrogen feeds detection system, under the normal condition, pressure gauge 12 indications are normal, pressure alarm 13 is failure to actuate, if outer bellows 3 leaks, then pressure descends, seriously leak to the low alarm setting value that makes pressure drop to pressure alarm 13, then pressure alarm 13 is reported to the police at once; In the petroleum chemical industry, the high-pressure fluid medium that pipeline is carried, its pressure is all more than 1.0MPa, if the internal layer bellows leaks, then pressure gauge 12 indicated pressures rise, and seriously leak to the high alarm setting value that makes pressure rise to pressure alarm 13, and then pressure alarm 13 is reported to the police at once.Certainly, when outer and internal layer bellows was revealed simultaneously, pressure alarm 13 also can be reported to the police according to the alarm pressure limit value at any time.

Claims (3)

1, band detects the double-deck FlexbleJoint of hinge type of interface, double-ply bellows and linkage with connecting tube, band stiffening ring, it is characterized in that: perforate respectively on the two ends straight section of the outer bellows of double-ply bellows, and the overhanging formula of welding detects interface on the hole, and the detection interface passes the back-up ring in order to fixing distolateral stiffening ring on the outer wall that is welded in connecting tube.

2, the double-deck FlexbleJoint of hinge type of band detection interface according to claim 1 is characterized in that: detect interface (2) and also weld together in order to the back-up ring (4) of fixing distolateral stiffening ring (5) simultaneously with on the outer wall that is welded in connecting tube (7).

3, band according to claim 1 and 2 detects the double-deck FlexbleJoint of hinge type of interface, it is characterized in that: respectively have one to detect interface (2) on the two ends straight length of double-ply bellows (8), two are detected interfaces (2) respectively as the import and the outlet of detected gas, and the nozzle orientation that makes progress in double-ply bellows (8) footpath is 180 degree mutually.

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