CN-224229539-U - Connecting pipe sealing device for pressure test of tube bundle of electric air-cooling condenser

Abstract

The utility model relates to the technical field of pressure test of tube bundles of electric air-cooled condensers and discloses a connecting tube sealing device for pressure test of the tube bundles of the electric air-cooled condensers. The split type pipe hoop is formed by involution of two semicircular hoops and is fixedly connected with the outer wall of the pipe connecting body through a circumferential locking assembly, the gland is detachably connected with the split type pipe hoop through an axial connecting assembly, an elastic sealing gasket is arranged between the gland and the pipe opening end face of the pipe connecting body, and the outer diameter of the elastic sealing gasket is larger than the inner diameter of the pipe connecting body. The utility model solves the problem of difficult sealing when the electric air-cooled condenser is subjected to pressure-proof test without a prefabricated flange connecting pipe, has the advantages of simple structure, convenient installation, reliable sealing, convenient disassembly and assembly and the like, avoids the defects of complicated operation and poor suitability of the traditional temporary welding or complex clamp, obviously improves the pressure test working efficiency, and reduces the field operation difficulty and the labor cost.

Inventors

• Lang Xiaopo
• GUO KUN
• LI RUI
• SHUI RONGWEI
• ZHANG DANDAN
• Jin Wanting
• LIU YAMING

Assignees

• 隆华科技(洛阳)装备有限公司
• 隆华科技集团（洛阳）股份有限公司

Dates

Publication Date

20260512

Application Date

20250513

Claims (3)

1. 1. A pipe connecting sealing device for pressure test of a pipe bundle of an electric air-cooled condenser comprises a pipe connecting body (1) and is characterized in that a split pipe hoop (2) is sleeved on the outer wall of a pipe opening of the pipe connecting body (1), the split pipe hoop (2) is fixedly connected with the outer wall of the pipe connecting body (1) through a circumferential locking assembly, a gland (3) is arranged on the end face of the pipe opening of the pipe connecting body (1), the end face of the pipe opening of the pipe connecting body (1) is covered by the outline of the gland (3), the gland (3) is detachably connected with the split pipe hoop (2) through an axial connecting assembly, an elastic sealing gasket (4) is arranged between the gland (3) and the end face of the pipe opening of the pipe connecting body (1), and the outer diameter of the elastic sealing gasket (4) is larger than the inner diameter of the pipe connecting body (1).
2. 2. The connecting pipe sealing device for pressure test of the tube bundle of the electric air-cooled condenser according to claim 1, wherein the split type tube hoop (2) is formed by combining two semicircular hoops (2-1), the butt joint ends of the two hoops (2-1) are respectively provided with a flange (2-11) extending outwards, and the circumferential locking assembly comprises a first bolt assembly (2-2) penetrating through the adjacent flanges (2-11).
3. 3. The connecting tube sealing device for pressure testing of the tube bundle of the electric air-cooled condenser according to claim 1, wherein a plurality of connecting through holes (3-1) which are uniformly distributed along the circumferential direction of the gland (3) are formed in the edge of the gland, threaded holes (2-12) are formed in corresponding positions of the axial end faces of the split type tube hoops (2), and the axial connecting assembly comprises a second bolt assembly (5) which penetrates through the connecting through holes (3-1) and is screwed with the threaded holes (2-12).

Description

Connecting pipe sealing device for pressure test of tube bundle of electric air-cooling condenser Technical Field The utility model relates to the technical field of electric power tube bundle pressure resistance tests, in particular to a connecting tube sealing device for pressure test of an electric power air-cooling condenser tube bundle. Background In the technical field of industrial heat exchangers, particularly in the field of electric air-cooling condensers, large-diameter single-row elliptical finned tube bundles are widely adopted, and the large-diameter single-row elliptical finned tube bundles must undergo strict pressure-resistant tests (such as a hydraulic test, an airtight test and the like) before leaving a factory so as to test the reliability of manufacturing processes and materials and ensure safe operation of equipment. However, to facilitate flexible connection according to actual piping conditions at the time of field installation, the tube box nipple ends of such tube bundles are typically designed as connection faces without prefabricated flanges. Due to the lack of a standard flange connection surface, the traditional sealing method is difficult to be applied, so that the sealing is difficult and easy to leak in pressure test, the test efficiency is seriously affected, the test data is possibly misaligned due to unreliable sealing, and even potential safety hazards exist. Currently, no mature and standardized solution exists in the industry for pressure test sealing of such prefabricated flange-free connection pipes. The existing temporary measures, such as adopting a welding blind plate or using a specially-made clamp with a complex structure, generally have the problems of complex operation, time and labor consumption, unstable sealing effect, difficult repeated use and the like, cannot meet the requirements of efficient and reliable production test, and increase unnecessary cost. Disclosure of utility model The utility model aims to provide a connecting pipe sealing device for pressure test of a tube bundle of an electric air-cooled condenser, which realizes quick sealing of a connecting pipe body through matching of a split type tube hoop and a gland, and ensures reliability and high efficiency of a pressure test. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The pipe connecting sealing device for the pressure test of the pipe bundle of the electric air-cooled condenser comprises a pipe connecting body, wherein a split pipe hoop is sleeved on the outer wall of the pipe opening of the pipe connecting body, the split pipe hoop is fixedly connected with the outer wall of the pipe connecting body through a circumferential locking assembly, a gland is arranged on the end face of the pipe opening of the pipe connecting body, the profile of the gland covers the end face of the pipe opening of the pipe connecting body, the gland is detachably connected with the split pipe hoop through an axial connecting assembly, an elastic sealing gasket is arranged between the gland and the end face of the pipe opening of the pipe connecting body, and the outer diameter of the elastic sealing gasket is larger than the inner diameter of the pipe connecting body. Further, the split type pipe clamp is formed by two semicircular clamp involutions, the butt joint ends of the two clamp are respectively provided with a flange extending outwards, and the circumferential locking mechanism comprises a first bolt assembly penetrating through the adjacent flanges. Further, a plurality of connecting through holes which are uniformly distributed along the circumferential direction of the gland are formed in the edge of the gland, threaded holes are formed in positions corresponding to the axial end faces of the split type pipe hoops, and the axial connecting mechanism comprises a second bolt assembly which penetrates through the connecting through holes and is screwed with the threaded holes. The beneficial effects of the utility model are as follows: The connecting pipe sealing device for the pressure test of the tube bundle of the electric air-cooled condenser has the advantages of simple structure, reasonable design and convenience in manufacturing and installation. The combination of the split pipe hoop and the gland is adopted to simulate the flange connection mode, so that the sealing problem caused by flange-free connection of the connecting pipe is effectively solved. The design not only ensures the reliability of the sealing process, but also ensures convenient and quick mounting and dismounting operation, and greatly improves the efficiency of pressure test work. In addition, the split type pipe hoop is formed by two semicircular hoops, is locked through a flange and a bolt, combines the elastic deformation of an elastic sealing gasket, realizes good sealing performance, and has stronger suitability and universality. The structure avoids the probl