RU2037122C1 - Vertical case-pipe heat exchanger - Google Patents

Abstract

FIELD: heat exchanging engineering. SUBSTANCE: heat exchanger has at least two sections. The sections are defined by pipe plates. Parts of the heat pipes are secured in the pipe plates. Evaporation and condensation parts of the pipes are combined by common chambers. EFFECT: enhanced efficiency. 2 cl, 1 dwg

Description

 The invention relates to heat exchange equipment and can be used in oil refining, petrochemical industry, industrial energy, for cooling ICE systems, as well as for working in a heat transfer mode between aggressive and reactive environments.

Known radiator for cooling heat transfer media in ICE systems with an intermediate coolant, in which the open ends of the evaporative and condensation parts of the heat pipes are connected by a common collector chamber [1]
The disadvantage of this radiator is the complexity of the design and low-tech manufacturing.

The closest technical solution to the proposed one is a vertical shell-and-tube regenerator for industrial energy, made up of two parts, upper and lower, connected to the sealant, and the evaporation and condensation sections of the heat pipes are strictly combined with open ends [2]
The design of the device of the prototype does not provide a sufficient degree of reliability, since the evaporative and condensation sections of the heat pipes are fixed in the tube sheets only with open ends and when working in vibration, the loose ends of the heat pipes have significant free vibrations. The disadvantage is the complexity of manufacturing and installation with the exact combination of two tube sheets with evaporative and condensation sections of heat pipes and seals.

 The objective of the invention is to increase the reliability and improve the operational characteristics of a vertical shell-and-tube heat exchanger using existing industrial manufacturing technologies. This problem is solved due to the fact that each section of the heat exchanger is assembled on two tube sheets, in which the evaporation and condensation sections of the heat pipes are fixed, and the sections are mounted one above the other vertically and form collector chambers. This arrangement of the sections allows the use of an intermediate coolant. In addition, the evaporation and condensation sections of the heat pipes relative to each other are located arbitrarily.

 The drawing shows a diagram of a heat exchanger.

 The heat exchanger is assembled from identical sections 1 on the sealing gaskets 2 with the ring 3. The heat exchanger is closed by the covers 4 on the ends, forming collector chambers 10 on the gaskets 5. Section 1 consists of two tube sheets 6 with tubes 7 fixed in them and enclosed in a casing 8 with nozzles 9 for the inlet and outlet of the coolant and cooler. (Thus, section 1 is an industrial heat exchanger for heat exchange through the "wall"). The heat exchanger is assembled according to the scheme from sections arranged arbitrarily relative to each other, by known methods for achieving tightness with collector chambers 11 between sections 1. After assembly, the heat exchange tubes 7 in the lower section are the evaporative section of the heat pipe, in the upper condensation section. Since the vertical heat pipe is filled by one third of the intermediate heat transfer medium to make full use of the surface of the evaporation section of the heat pipe formed by the heat exchange tube 7, it is advisable to assemble the heat exchanger from three sections, also with a collector chamber P between the sections. For filling the intermediate coolant, technological operations with it, monitoring its level in the heat exchanger on the covers 4, fittings are provided to which valves, additional pipelines, a level measuring device, etc. can be connected. (not shown).

 The heat exchanger operates as follows.

 To ensure operation, the heat exchanger is filled with an intermediate heat carrier, the boiling point of which corresponds to technological goals, while additional heat control equipment is not needed, since heat transfer begins after boiling the intermediate heat carrier in tubes 7 in the lower section. The medium to be cooled is supplied through the inlet pipe 9 to the lower section 1. Heat exchange between the main and intermediate heat carrier occurs through the wall of the heat exchange tubes 7, which can be equipped with fins from the inside and the outside. The intermediate heat carrier vapor rises into the intermediate manifold chamber P, which equalizes the pressure in all tubes 7 involved in heat transfer in both sections. Steam entering the upper section condenses on the inner walls of the cooled tubes 7 of the upper sections, which are cooled by a medium with a temperature below the condensation temperature of the steam of the intermediate coolant. Condensate from the condensing upper sections flows into the intermediate collector chamber P and, if the heat exchanger deviates from the vertical along one or more tubes 7, into the collector chamber 10, designed to level the level of the intermediate coolant in all tubes 7 of the lower section.

Claims (2)

 1. VERTICAL SHELL-TUBE HEAT EXCHANGER made up of at least two vertical sections containing evaporating and condensing sections of heat pipes having supporting upper and lower ends, respectively, fixed in tube sheets, characterized in that the lower and upper ends of evaporating and condensing sections of thermal pipes, respectively, are also made open and fixed in the tube sheets with the formation in all areas of the fastening of the pipe sections to the tube sheets of the collector chambers.  2. The heat exchanger according to claim 1, characterized in that the evaporative and condensation sections of the heat pipes are installed relative to each other arbitrarily.