JPS6048489A - Corrosion resisting coated tube type condenser - Google Patents

Abstract

PURPOSE:To prevent corrosion of a cooling tube without excessively reducing the cooling surface area of the entire part of the condenser by coating cooling tubes with a corrosion-resisting material. CONSTITUTION:The low melting point medium of the low melting point medium condenser (for example, fron or the like) which is decomposed when heated at high temperatures, and chlorine is separated from the medium and is combined with hydrogen in the moisture contained in air leaking into the condenser and converted into hydrochloric acid. The hydrochloric acid adheres to the surfaces of the cooling tubes and corrodes the surface of the cooling tubes. That is, since air containing moisture which is not condensed in the condenser is collected in an air cooling tube nest, and extracted through an air extracting tube 22, a large amount of moisture is contained in air in the vicinity of the cooling tubes in the air cooling tube nest. Hence, hydrochloric acid tends to be produced, and the cooling tube in the air cooling tube nest is liable to be corroded in its entirety. Accordingly, the entire cooling tube 10 in the air cooling tube nest 21 is flattened and is coated with a corrosion resisting coating material (such as Teflon) so as to prevent corrosion.

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a heat exchange system, and is sometimes used in a low boiling point medium condenser in a low boiling point medium to improve corrosion resistance. Regarding Tamiya type heat exchanger.

[Background of Shiroaki]

Conventionally, moisture rich in the air leaking from the outside into a vacuum-type condenser was combined with chlorine generated by decomposition of a low-boiling point medium, resulting in a flat salt bath that was particularly sensitive to air. The disadvantage was that the cooling pipes in the so-called cooling pipe nests corroded along their entire length.

[Purpose of the invention]

An object of the present invention is to provide a condenser that prevents corrosion from forming on the surface of the cooling agent by covering the entire length of the cooling tubes in the portion called the air cooling tube bundle of the condenser. Ru.

[Summary of the invention]

The present invention is a tt which is not subject to corrosion and is called phosphor cooling/vagance.
By applying a corrosion-resistant coating to the entire condenser after 11 hours of cooling, corrosion of the cooling pipes is prevented without necessarily reducing the cooling surface area of the entire condenser.

[Embodiments of the invention]

An embodiment of the present invention will be described below.

Figure '54'J1 shows the entire system of a low boiling point medium cycle power plant that is the object of the present invention.

The low boiling point medium steam 16 generator IR is heated by the exhaust heat 2, and the low boiling point medium steam 3 generates a low boiling point medium turbine generator 4.
Drives the A current.

The low boiling point medium vapor 3 is expanded in the low boiling point medium turbine and condensed and liquefied in the low boiling point medium condenser 5, and the low boiling point medium liquid 7 is supplied to the low boiling point medium steam generator 1 by the low boiling point medium supply pump 6. 7)'y cycle. Since the low θ point medium condenser 5 is vacuumed internally, air leaks from the outside.
Immunity leaked inside? It is better to extract.

Figure 2 shows low boiling point medium #! As shown in the cross-sectional view of the condenser, low boiling point medium vapor 3 enters through the body inlet 8, cooling water 17 flows through the cooling chambers d arranged in the body 9, and is liquefied by cooling the low boiling point medium (3τ).

The cooling pipe IO has a plurality of partition plates 11 arranged in an angle θ1r so that the low boiling point medium vapor 3 enters the cooling chamber IO.

The cooling water 17 is from the water silkworm inlet 14 and the ice room 1 is from the water chamber population 14.
3, it escapes the 'd temporary 15, flows into the cooling fan lO, and is discharged from the water 416.

The reduced boiling point medium 7 is sucked into the first point medium supply pump from the outlet of the body 12.

Funeral 31A (,'l: Shows a cross section perpendicular to the lacrimal condenser cooling system, extracting the air that leaked into the condenser, and cooling it to 2). nesting 21
are arranged, the air extraction tube is 22kmL, and the air is 20kmL.
It shows the structure to extract.

Figure 4 shows an axial cross-section of the air-cooled fruit, and shows the partition plate 1.
1 is provided with an air extraction hole 24 to flow air 20 in the axial direction, and an air extraction hole 24 connected to the axial partition plate 23 is provided.
2 shows a structure in which 20 liters of air is extracted.

FIG. 5 is a partially enlarged cross-section of the air extraction part of a conventional condenser.In order to widen the cooling surface 4*, the cooling surface 4* is surrounded by a fin shape.

The low boiling point medium must be, for example, chlorofluorocarbon, and fluorocarbon (fluorocarbon) is required.
C), a compound of chlorine (Ct), and chlorine (Ct), generally decomposes when heated at high temperatures, and chlorine (CL), which has a weak atomic force, is separated. This hot water CCt) and the air leaking into the condenser are mixed with water -A- (H20)
The hydrogen (H) inside combines to form hydrochloric acid (l(C, ri). This hydrochloric acid resists the next turn of the cooling pipe and becomes a cooling agent.

In other words, the air containing moisture condensed in the condenser is collected in the air cooling pipes and extracted through the air extraction system 22, so that no air cooling is required. d near dvC
There is more water, and the j1 string is also generated? -j-<, Air cooling/U fruit cooling is the primate's way, j^*-qtt
-es-i.

Hanging No. 6 shows the details of 1115 Akira, and the entire length of the cooling chamber r of the air cooling chamber 21 of No. 3 No. 3 was smoothed and crushed with a hardening material 19 (for example, Teflon) to rot. Narrow τ
Use a structure that prevents this.

Cooling'* In one prefecture where purple assembly is inserted,
・A temporary inner diameter 1i: t/l temporary inner diameter reconnaissance message key 7
To prevent this from happening, the smooth part is cooled in advance, and the outer diameter of the spring-resistant recovery material 19 is designed to be no more than VCi.

Fig. 7 f, J1, main brother Akira τ) Air cooling 2!1 after t+L
] It has the structure of Higashi's Cold Rubber 1] and has been used as a means of cooling and coating to resist the coating. Jru [-Original's moving bed] - +5 When the grain decomposes, it becomes a cylindrical type. - +5 Cold foam II due to the fibers generated from VC has an effect other than preventing corrosion due to the temporary duplication of the next l^ anti-γ, III Must.

[Brief explanation of drawings]

Figure 1 is a diagram of the meridian system of Ikuru Kotun Gufunoto, which is the anti-liquid of the present invention. 11, Figure 5 is the conventional nitrogen setsubun reconnaissance, Figure 6 is the structural diagram of the nitrous ``A'' of the small promenade, and Figure 7 is the cooling system that was commonly used in Honmaru ψ. The room is broken. 5... 1 yo na point medium bum benefit, 10... cooling 'Id,
19...11u] Kaya l Hard 3 Senior 2 Roa /2 Jo 3 圀＄4 eyes

Claims (1)

[Claims] 1. In the low boiling point medium condenser with air cooling official Togane,
Corrosion-resistant coating &-iN characterized by air cooling, cooling of U cavity, and covering the entire length of the outer surface of a with corrosion-resistant coating material.
Nisaki contract story.