CN203454918U - Disassembling-free backwashing device with plate cooler - Google Patents

Abstract

The utility model discloses a disassembling-free backwashing device with a plate cooler. The disassembling-free backwashing device comprises the plate cooler provided with a cooling water discharging pipe and a cooling water feeding pipe, a control valve is installed on the cooling water feeding pipe, a water discharging pipe is installed on a position, between the control valve and the cooler, of the cooling water feeding pipe, and the cooling water discharging pipe is connected with a high-pressure nitrogen washing pipe.

Description

Plate cooler without dismantling backwashing device

technical field

The utility model relates to a dismantling-free backwashing device for a plate cooler.

Background technique

Due to the granular impurities in the cooling water of the plate cooler, a large number of deposits are formed and attached to the heat exchange partition in the plate cooler during the circulation process, which not only reduces the heat exchange area of the plate, reduces the heat transfer efficiency, but also increases the cooling water capacity. The flow resistance and the power loss of the circulating pump lead to poor cooling effect of the cooler, and the temperature of the lubricating oil is as high as 60oC. In order to ensure the cooling effect, the method of regularly dismantling and cleaning the plate cooler is generally adopted, but this method is time-consuming and laborious, and the cost of replacing the heat exchange plates every year is relatively high (as much as 30 yuan per year). The main reason for the poor cooling effect is that the impurities and scale deposited on the heat exchange plate of the cooler have not been cleaned and removed in time. As a result, it not only reduces the heat exchange area of the plate, reduces the heat transfer efficiency, but also increases the flow resistance of the cooling water and the power loss of the circulating pump. In field use, in order to ensure the cooling effect of the cooler, the method of regularly dismantling and cleaning the plate cooler is generally adopted, but this method is time-consuming and laborious.

Contents of the invention

The purpose of the utility model is to provide a backwashing device without dismantling of the plate cooler, which can completely remove the dirt attached to the inner plates of the plate cooler and improve the cooling effect without dismantling the cooler.

The purpose of this utility model is achieved in this way. A plate cooler without dismantling and backwashing device includes a plate cooler with a cooling water outlet pipe and a cooling water inlet pipe. A control valve is installed on the cooling water inlet pipe. The control valve An outlet pipe is installed on the cooling water inlet pipe between the cooler and the cooler, and a high-pressure nitrogen flushing pipe is connected to the cooling water outlet pipe.

The utility model can achieve the purpose of completely removing the dirt attached to the plates inside the plate cooler without dismantling the cooler and improving the cooling effect. Connect the high-pressure nitrogen pipe at the front end of the cooling water outlet valve of the plate cooler (the gas source can be customized according to the user's conditions), and the part of the nitrogen pipe in the cooling outlet pipe is bent in the opposite direction to the refrigerant circulation direction, so that the recoil high-pressure nitrogen gas (pressure 0.7-1MPa ) direction is opposite to the cooling water direction (pressure ≤ 0.4MPa), and the drain pipe is connected to the front end of the water inlet valve of the cooler. When the lubricating oil temperature is high, open the drain valve, close the cooling water inlet valve, open the nitrogen intake valve, and use the high-pressure flow rate air-water mixed flow to flush the plate cooler partition in the opposite direction to remove the dirt attached to the partition, and then recoil Flows out of the cooler through the drainpipe. In this way, quick dismantling and cleaning are not required, the heat transfer efficiency of the plate cooler is improved, and the cooling effect is improved.

Description of drawings

The utility model will be described in further detail below in conjunction with the accompanying drawings.

Fig. 1 is a schematic diagram of the connection structure of the present invention.

Detailed ways

A plate cooler without dismantling backwashing device, as shown in Figure 1, includes a plate cooler 1 with a cooling water outlet pipe and a cooling water inlet pipe, a control valve 5 is installed on the cooling water inlet pipe, and the control valve 5 is connected to the cooling water inlet pipe. A water outlet pipe 4 is installed on the cooling water inlet pipe between the coolers 1, and a high pressure nitrogen flushing pipe 2 is connected on the cooling water outlet pipe 3. In the cooler, the high-pressure water mist formed by the high-pressure gas and the refrigerant flow in the opposite direction to the refrigerant flow is used to continuously impact and clean the impurities and scale deposited on the heat exchange plates, making them change from a fixed state to a free state, and then discharged with the backwash flow for cooling In order to realize the free disassembly and cleaning of the cooler. After the backwash is completed, the gas is discharged through the forward cooling water circulation, and the cooler is put into operation.

Claims (1)

1. a panel cooler exempts to tear open back purge system, comprise the panel cooler with cooling water outlet pipe and cooling water inlet pipe, by-pass valve control is installed on cooling water inlet pipe, it is characterized in that: on the cooling water inlet pipe between this by-pass valve control and cooler, outlet pipe is installed, on cooling water outlet pipe, is connecting high pressure nitrogen cleaning hose.

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