Sleeve compensator with leakage detection function

Abstract

A sleeve compensator with a leakage detection function is used for compensating expansion caused by heat and contraction caused by cold of a pipeline. The inner tube is inserted in the outer tube, a sealing filler (5) is arranged between the outer tube and the inner tube, the inner diameter of the left part of the pressing sleeve is larger than the outer diameter of the inner tube, a through hole (12) is formed in the wall of the left part of the pressing sleeve, a columnar electric conductor (15) is inserted in the through hole, an insulating sleeve (16) is arranged between the electric conductor and the through hole, and the electric conductor and the pressing sleeve form an electric conduction electrode (17). The conductivity electrode is connected with the input end of a conductivity measuring instrument (18), and the output end of the conductivity measuring instrument can emit measurement data. The beneficial effects of the utility model are that the conductor and the pressing sleeve form a conductivity electrode, whether leakage exists can be reflected by measuring the conductivity change, the measured data can be transmitted remotely, the detection efficiency can be improved, and the sealing condition of the sleeve compensator can be monitored in real time. The interference of external water spraying on leakage detection can be avoided, and the detection is accurate.

Description

Technical Field

[0001] The utility model relates to a sleeve compensator for compensating the thermal expansion and contraction of pipelines. Background Art

[0002] After the sleeve compensator operates for a period of time, the sealing material will wear and leakage will occur, which requires regular inspection. Usually, it is manual visual inspection. This method cannot detect leakage in time. In addition, due to the installation position of the sleeve compensator, such as being installed underground or at a high altitude, it is inconvenient for visual inspection. Summary of the Utility Model

[0003] In view of the above problems, the utility model provides a sleeve compensator with a leakage detection function, which has a leakage detection function and can timely reflect the leakage situation, overcoming the deficiencies of manual detection.

[0004] The technical solution of the utility model is a sleeve compensator with a leakage detection function, which includes an outer pipe 6, an inner pipe 1, and a compression sleeve 4. The right part of the outer pipe is reduced in diameter and shrunk. The inner pipe is inserted into the outer pipe. A sealing packing 5 is arranged between the outer pipe and the inner pipe. The feature is that a compression sleeve flange 9 is arranged in the middle of the compression sleeve. The right end face of the compression sleeve is in contact with the sealing packing. The compression sleeve flange is connected to the outer pipe flange 10 of the outer pipe through bolts 11. The inner diameter of the left part of the compression sleeve is larger than the outer diameter of the inner pipe. A through hole 12 is arranged on the wall of the left part of the compression sleeve. A columnar conductor 15 is inserted into the through hole. An insulating sleeve 16 is arranged between the conductor and the through hole. The conductor and the compression sleeve form a conductivity electrode 17. The conductivity electrode is connected to the input end of a conductivity measuring instrument 18. The output end of the conductivity measuring instrument can transmit measurement data.

[0005] The beneficial effect of the utility model is that the conductor and the compression sleeve form a conductivity electrode. By measuring the change of its conductivity, it can reflect whether there is leakage. The measured data can be remotely transmitted, which can improve the detection efficiency and real-time monitor the sealing condition of the sleeve compensator. It can avoid the interference of external water spraying on leakage detection and the detection is accurate. Description of the Drawings

[0006] Figure 1 It is a schematic structural diagram of the utility model.

[0007] Figure 2 is Figure 1 an enlarged view of part C of

[0008] Figure 3 It is a block diagram of the detection principle.

[0009] The drawing reference signs are: 1 - inner tube, 2 - water baffle, 3 - water retaining ring, 4 - compression sleeve, 5 - sealing packing, 6 - outer tube, 7 - reduced diameter wall, 8 - reduced diameter pipe, 9 - compression sleeve flange, 10 - outer tube flange, 11 - bolt, 12 - through hole, 13 - drain port, 14 - conductor, 15 - small hole, 16 - insulating sleeve, 17 - conductivity electrode, 18 - conductivity measuring instrument. Detailed implementation manner

[0010] A sleeve compensator with a leakage detection function, which comprises an outer tube 6, an inner tube 1, and a compression sleeve 4. The right part of the outer tube is reduced in diameter and shrunk to form a reduced diameter pipe 8. The inner tube is inserted into the outer tube. A sealing packing 5 is arranged between the outer tube and the inner tube. The right end of the sealing packing is in contact with the reduced diameter wall 7 on the outer tube. A compression sleeve flange 9 is arranged in the middle of the compression sleeve. The right end face of the compression sleeve is in contact with the left end of the sealing packing. The compression sleeve flange is connected to the outer tube flange 10 of the outer tube through bolts 11. Tightening the bolts can compress the sealing packing to seal between the outer tube and the inner tube.

[0011] A through hole 12 is arranged on the wall of the left part of the compression sleeve. A columnar conductor 15 is inserted into the through hole. An insulating sleeve 16 is arranged between the conductor and the through hole. The conductor and the insulating sleeve are in close contact with each other, and the insulating sleeve and the through hole are in close contact with each other. The conductor and the compression sleeve form a conductivity electrode 17. The conductivity electrode is connected to the input end of a conductivity measuring instrument 18, and the output end of the conductivity measuring instrument can transmit measurement data.

[0012] The end of the conductor can be flush with the inner wall of the compression sleeve or sunk in the wall of the compression sleeve. When the end of the conductor is sunk in the wall of the compression sleeve, a concave pit is formed between them, which can increase the storage capacity of the leaked fluid, increase the conductivity between the conductor and the compression sleeve, and improve the detection sensitivity.

[0013] Its working principle is that the conductor and the compression sleeve form a conductivity electrode. When there is no electrolyte solution in the conductivity electrode, the conductivity between them is close to 0. When there is electrolyte solution in the conductivity electrode, the conductivity increases. Whether there is leakage can be judged by detecting the conductivity. When the sealing performance of the sleeve compensator deteriorates, the leakage path of the fluid medium is: along the contact surface between the inner tube and the sealing packing → the inner wall of the left part of the compression sleeve → the left end of the compression sleeve flows out; when the leaked fluid accumulates between the conductor and the compression sleeve, the conductivity increases, and whether there is leakage can be judged by detecting the conductivity.

[0014] The inner diameter of the mouth part 13 at the left end of the compression sleeve is larger than the inner diameter of the left part of the compression sleeve. Drain holes 14 are arranged on the wall of the mouth part. An annular water retaining ring 3 is fixedly sleeved on the inner tube. The water retaining ring is centered with the concave part. An annular water baffle 2 is connected to the left end face of the compression sleeve. Such a structure can prevent external rainwater or splashing water from contacting the conductor and ensure the accuracy of leakage detection. The function of the water baffle 2 is to make the external splashing water only flow rightward along the surface of the inner tube. The function of the water retaining ring 3 is to prevent the splashing water from flowing towards the conductor and guide the splashing water to the drain holes.

[0015] The beneficial effects of the utility model are as follows: the conductor and the compression sleeve form a conductance electrode. By measuring the change in its conductance, it can reflect whether there is leakage. The measured data can be remotely transmitted, which can improve the detection efficiency and monitor the sealing condition of the sleeve compensator in real time. It can avoid the interference of external water spraying on leakage detection and the detection is accurate.

Claims

1. Sleeve compensator with leakage detection function, which comprises an outer pipe (6), an inner pipe (1), and a gland (4). The right part of the outer pipe is reduced in diameter and shrunk. The inner pipe is inserted into the outer pipe, and a sealing packing (5) is arranged between the outer pipe and the inner pipe. It is characterized in that, The middle part of the compression sleeve is provided with a compression sleeve flange (9). The right end face of the compression sleeve is in contact with the sealing packing. The compression sleeve flange is connected to the outer pipe flange (10) of the outer pipe through bolts (11). The inner diameter of the left part of the compression sleeve is larger than the outer diameter of the inner pipe. Through holes (12) are provided on the wall of the left part of the compression sleeve, and columnar conductors (15) are inserted into the through holes. An insulating sleeve (16) is arranged between the conductor and the through hole. The conductor and the compression sleeve form a conductivity electrode (17). The conductivity electrode is connected to the input end of a conductivity measuring instrument (18), and the output end of the conductivity measuring instrument can emit measurement data.

2. The sleeve compensator with a leakage detection function according to claim 1, wherein The inner diameter of the mouth part (13) at the left end of the compression sleeve is larger than the inner diameter of the left part of the compression sleeve. Drainage holes (14) are provided on the wall of the mouth part (13). An annular water retaining ring (3) is fixedly sleeved on the inner pipe. The water retaining ring is centered with the drainage holes. An annular water baffle (2) is connected to the left end face of the compression sleeve.

3. The sleeve compensator with a leakage detection function according to claim 1, characterized in that, The end part of the conductor is sunk in the wall of the compression sleeve.

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