RU238530U1 - LIQUID CHLORINE EVAPORATOR - Google Patents

Abstract

This utility model relates to water disinfection and, in particular, can be used at large chlorination stations with high gaseous chlorine flow rates for feeding it into the treated water. The liquid chlorine evaporator is a structurally integrated device. The evaporator consists of a tubular heat exchanger and a water heater. The heat exchanger is a coil welded into a water thermostat. The thermostat is a thermally insulated vessel filled with stagnant demineralized water. The water heater, water level, and temperature gauges are screwed into the thermostat via a threaded connection. An expansion chamber is installed on the device's chlorine inlet pipeline via flanged and threaded connections. A circulation pump is installed in the coolant circulation line via a threaded connection. The technical result consists of uniform heating of the coolant, ensuring a stable flow rate of evaporated chlorine. 1 Fig.

Description

Field of technology

The utility model relates to the field of water disinfection, in particular, it can be used at large chlorination stations with a high flow rate of gaseous chlorine for feeding it into the treated water.

State of the art

Chlorination is the most common method of disinfecting drinking water. Liquefied chlorine or substances containing active chlorine (bleach, hypochlorites, etc.) are used as the chlorine source. However, liquefied chlorine has become more widespread as a source of gaseous chlorine, which is highly soluble in water, and thanks to the development of devices powered by liquefied chlorine, later called chlorinators. The performance of such devices is determined by the conditions that ensure the conversion of liquid chlorine to a gaseous state. As the chlorine gas is consumed, the pressure in the liquid chlorine cylinder drops, lowering the chlorine temperature, slowing evaporation and thereby reducing the flow of chlorine gas and the performance of the chlorinator. To generate larger quantities of gaseous chlorine, a series of cylinders is connected, which requires more space and personnel, or temperature conditions are created that ensure a constant and rapid conversion of liquid chlorine to gaseous form. Therefore, at large chlorination stations, large-capacity chlorine containers are used instead of chlorine cylinders. High-capacity chlorinators and liquid chlorine evaporators must, accordingly, provide this capacity of gaseous chlorine.

The closest in technical essence and achieved result is the liquid chlorine evaporator IZHKh M3100 - a device for accelerating the transition of liquid chlorine to a gaseous state, presented in the Russian Federation patent for utility model No. 90784.

The above-mentioned liquid chlorine evaporator consists of a tubular heat exchanger and a water heater. The tubular heat exchanger, shaped like a coil, is located inside a water thermostat (boiler), which is a thermally insulated vessel filled with stagnant demineralized water. Immersed in the water is an electric heater equipped with a water temperature gauge and regulator. The evaporator also contains an expansion chamber at the chlorine inlet.

Using a thermostat with non-flowing water completely eliminates the consumption of hot mains water, which makes the device more economical.

The expansion chamber, which is part of the evaporator, prevents an increase in the pressure of chlorine gas in the pipeline due to its excessive evaporation and signals a danger and malfunction of the device.

The disadvantage of this device is the inability to maintain the evaporation temperature of liquid chlorine due to the uneven heating of the coolant.

Disclosure of the essence of the utility model

The technical result achieved by the essential features of the utility model consists of uniform heating of the coolant, ensuring a stable flow of evaporated chlorine.

The technical result is achieved by means of a liquid chlorine evaporator, which is structurally a single device and consists of a tubular heat exchanger made in the form of a coil welded inside a water thermostat, which is a vessel protected by thermal insulation and filled with stagnant demineralized water, as well as a water heater screwed with a threaded connection inside the thermostat, into which water level and temperature gauges are also screwed with a threaded connection, and an expansion chamber is installed on the inlet chlorine pipeline of the device by means of flanged and threaded connections (the inlet chlorine pipeline of the device is designed with the possibility of installing an expansion chamber by means of flanged and threaded connections), characterized in that a circulation pump is installed on the coolant circulation line by means of a threaded connection to ensure uniform heating of the coolant (the coolant circulation line is designed with the possibility of installing a circulation pump by means of a threaded connection to ensure uniform heating of the coolant).

All the above-mentioned elements of the liquid chlorine evaporator are structurally combined into a single device, connected to each other by assembly operations and are in functional and structural unity with each other.

Brief description of the drawings

The claimed technical solution is illustrated by the following image: Fig. - general view of a liquid chlorine evaporator.

Implementation of a utility model

The evaporator is a type of water thermostat. Liquid chlorine evaporates as it passes through a heat exchanger coil inside the water thermostat. The water is heated by an electric immersion heater, which is controlled by a temperature sensor. Temperature loss is prevented by efficient boiler insulation.

The evaporator consists of a water thermostat (boiler) (1) with effective thermal insulation, a heat exchanger coil welded inside the water thermostat, an electric heater H1 and H2 immersed in the water thermostat, and temperature meters T1 and T2.

The liquid chlorine evaporator contains an expansion chamber (2), which is connected via a flange connection to the liquid chlorine pipeline, and a circulation pump, connected via a threaded connection to the coolant (water) circulation line, ensuring its mixing for uniform heating.

The liquid chlorine evaporator works as follows.

Liquid chlorine from the container with liquid chlorine passes through the heat exchanger coil through the pipeline, is converted into gaseous chlorine and through the gaseous chlorine supply system, to which a pressure gauge, safety valve SV2, filter with heater H3 are connected via a threaded connection, enters the chlorinator.

Before operation, the water thermostat is filled with demineralized water, the electric heater is turned on, and the set temperature is set on the control panel. When the heater is turned on, the circulation pump turns on, ensuring uniform heating of the coolant to the set temperature. Once the thermostat reaches the required temperature, the liquid chlorine shut-off valve opens, initially at 1/3 capacity, and then, if the system is functioning normally, gradually increases to the maximum value. If the pressure in the evaporator exceeds the permissible limit, the emergency membrane on the expansion chamber ruptures, and the pressure drops due to the additional volume in the expansion chamber. The evaporator is then shut off, and a signal is sent to the operator.

Thus, the proposed design of the liquid chlorine evaporator allows for maximum performance of the chlorinator, due to the increased capacity for converting liquid chlorine into gaseous chlorine by increasing the heat exchange area through the use of a tubular heat exchanger in the form of a coil and by using a water thermostat and a circulation pump that effectively maintains the heat exchange temperature.

The claimed design of a liquid chlorine evaporator can also be used in other sectors of the national economy.

Claims (1)

A liquid chlorine evaporator, which is structurally a single device and consists of a tubular heat exchanger, made in the form of a coil, welded inside a water thermostat, which is a vessel protected by thermal insulation, filled with stagnant demineralized water, as well as a water heater, screwed with a threaded connection inside the thermostat, into which water level and temperature gauges are also screwed with a threaded connection, and an expansion chamber is installed on the inlet chlorine pipeline of the device by means of flanged and threaded connections, characterized in that a circulation pump is installed on the coolant circulation line by means of a threaded connection to ensure uniform heating of the coolant.