Pressure test clamp for efficient heat exchange tube

Abstract

The invention discloses a pressure test clamp for an efficient heat exchange tube. The pressure test clamp comprises a joint body (1) and a lock nut (2), wherein the joint body is connected with the lock nut by screw threads; the joint body is internally provided with a stepped hole (1a) that is through from left to right; a first inner conical surface (1b) is arranged at the right end of the stepped hole; a second inner conical surface (2c) is arranged between a round hole (2b) and a threaded hole (2a) of the lock nut; an O-shaped sealing ring (3), a conical sealing ferrule (4) and a conical locking ferrule (5) are mounted in sequence between the first inner conical surface and the second inner conical surface; the conical sealing ferrule is matched with the conical locking ferrule by a conical surface; and the conical locking ferrule is matched with the second inner conical surface of the lock nut by an outer conical surface. The pressure test clamp for the efficient heat exchange tube is simple in structure, convenient and quick to install, low in manufacturing cost, capable of performing the pressure test detection on a plurality of tubes simultaneously after serial connection, good in tightness, low in requirement on the end surface of the heat exchange tube, high in applicable pressure, low in labor intensity and efficient in work.

Description

technical field [0001] The invention belongs to the technical field of pressure measurement of heat exchange tubes, and in particular relates to a pressure test jig for heat exchange tubes. Background technique [0002] The heat exchanger is one of the essential components in the production equipment of the petrochemical industry. The number of heat exchange tubes in a heat exchanger ranges from hundreds to tens of thousands. During the manufacturing process of the heat exchanger, All heat exchange tubes should be pressure tested one by one to avoid quality defects of the heat exchange tubes themselves leaking after the manufacturing is completed, resulting in product rework and potential safety hazards. [0003] The traditional pressure test of heat exchange tubes adopts the jack briquetting method. The basic principle is to fix the heat exchange tubes by tightening the bolts, and then use the jack to push the briquetting blocks to compress the heat exchange tube nozzles to...

AI Technical Summary

Problems solved by technology

The main problems of this method are: (1) only 1 to 2 tubes can be tested at a time, and the fixing and sealing operations of the heat exchange tubes are troublesome, time-consuming and low in work efficiency; The heat exchange tube is sealed tightly, and the work intensity is high; (3) the end face of the heat exchange tube is high; (4) the applicable pressure is low

With the continuous construction and operation of large-scale refining and chemical equipment in recent years, the workload of heat exchange tube pressure testing has also increased exponentially. The traditional heat exchange tube pressure testing method is obviously unable to meet the needs of the rapidly developing refining and chemical industry.

Images