CN111847560A - A device for automatic adjustment of adding and deoxidizing medicinal liquid - Google Patents

Abstract

The invention relates to a device for automatically adjusting and adding deoxygenation liquid medicine, which comprises a dissolved oxygen sensor, a controller, a transmission device and a power supply conversion device, wherein the controller is connected with the dissolved oxygen sensor; the dissolved oxygen sensor is arranged in the deaerating tank and is in electric signal connection with the controller through a lead; the power conversion device is respectively connected with the controller and the transmission device through wires; the controller is in electric signal connection with the transmission device; the transmission device is matched with the dosing pump. The instant dissolved oxygen condition detected by the dissolved oxygen sensor is compared with the standard dissolved oxygen, and then the instant dissolved oxygen condition is increased or decreased according to the actual condition, so that the oxygen content in the water for the boiler is always within the normal range, and the labor intensity of operators is reduced.

Description

A device for automatic adjustment of adding and deoxidizing medicinal liquid

technical field

The invention belongs to the technical field of boiler water treatment, in particular to a device for automatically adjusting and adding deoxidizing medicinal liquid.

Background technique

The boiler water treatment solutions in the prior art include thermal deoxidation or drug deoxidation, among which drug deoxidation has received extensive attention due to its low energy consumption. The specific technology is adding deoxidizing liquid to boiler water. Most of the deoxidation by medicine is to use a manual detector to detect the oxygen content in the boiler water, and according to the data of the oxygen content in the water, the dosage of the medicine is controlled by manually adjusting the pulse frequency of the dosing pump, so that the boiler water is contained in the water. The oxygen content reaches the specified standard.

At present, the method of detecting the oxygen content of boiler feed water in the boiler water treatment of enterprises is mainly adopted. The oxygen content is manually detected by a detector every shift, and the dosing pump is manually adjusted according to the data of the oxygen content in the water to control the dosing amount. However, due to the constant changes in the temperature of the deaerated water and the constant changes in the boiler water flow, the method of timing detection and manual adjustment of the dosing amount will definitely cause an accidental shortage or excess of the dosage, which will affect the water treatment process. It is easy to cause oxygen corrosion of the boiler, so that the safe operation of the boiler cannot be guaranteed, and it will also cause certain economic losses to the enterprise.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a device for automatically adjusting and adding deoxidizing medicinal liquid, so as to solve the problem of accidental shortage or excess of medicinal quantity caused by manual timing detection of boiler water and manual adjustment.

The present invention is achieved through the following technical solutions:

A device for automatically adjusting and adding deoxidizing medicinal liquid, comprising a dissolved oxygen sensor, a controller, a transmission device and a power conversion device;

The dissolved oxygen sensor is arranged in the deaeration tank, and is connected with the electrical signal of the controller through a wire;

The power conversion device is respectively connected with the controller and the transmission device with wires;

the controller is electrically connected to the transmission device;

The transmission device cooperates with the dosing pump.

Preferably, the device for adding and deoxidizing medicinal liquid further comprises a dosing box, a dosing pump, a deoxidizing tank, an output pipeline, an input pipeline and a control valve;

One end of the input pipeline is connected to the outlet of the dosing box, and the other end is connected to the inlet of the dosing pump; the outlet of the dosing pump is connected to the inlet of the control valve, and one end of the output pipeline is connected to the control valve. The outlet of the valve is connected, and the other end is connected to the inlet of the deaerator tank;

The transmission device is connected with the adjustment device of the dosing pump.

Preferably, the transmission device is installed on the manual adjustment button.

Preferably, the number of the dosing pumps is one or more, and the number of the transmission devices is the same as the number of the dosing pumps and corresponds to each other one by one.

Preferably, multiple dosing pumps are arranged in parallel.

Preferably, the dissolved oxygen sensor is arranged at the bottom of the deaeration tank.

Preferably, any one of the above-mentioned control methods for automatically adjusting the device for adding deoxidizing medicinal liquid, comprising the following steps:

S1. Determine the range of standard oxygen content in boiler water;

S2, the dissolved oxygen sensor transmits the detected real-time oxygen content data of the boiler water in the deaerator tank to the controller, and the controller performs separate control according to the difference between the real-time oxygen content and the standard oxygen content;

If the difference value is a positive value, the controller sends a control signal to the transmission device to increase the deoxidizing liquid medicine, and the transmission device acts to increase the dosing amount of the dosing pump;

If the difference is 0, the controller does not send a control signal to the transmission;

If the difference is a negative value, the controller sends a control signal to the transmission device to reduce the deoxidizing chemical solution, and the transmission device acts to reduce the dosing amount of the dosing pump.

Preferably, the standard oxygen content in the boiler water is in the range of 10-30 μg/L.

The beneficial effects of the present invention are:

In this technical solution, the instant dissolved oxygen detected by the dissolved oxygen sensor is compared with the standard dissolved oxygen, and then increased or decreased according to the actual situation, so that the oxygen content in the boiler water is always within the normal range, and Reduce the labor intensity of operators.

Description of drawings

Fig. 1 is the schematic diagram of the device for automatically adjusting and adding deoxidizing medicinal solution according to the present invention.

Description of reference numerals

1 dosing pump, 2 transmission device, 3 control valve, 4 output pipeline, 5 deaerator tank, 6 dissolved oxygen sensor, 7 signal line, 8 controller, 9 control line, 10 input pipeline, 11 dosing tank.

Detailed ways

The technical solutions of the present invention will be described in detail by the following examples. The following examples are only exemplary, and can only be used to explain and illustrate the technical solutions of the present invention, but cannot be construed as limitations on the technical solutions of the present invention.

As shown in FIG. 1, the present application provides a device for automatically adjusting and adding deoxidizing liquid medicine, including a dissolved oxygen sensor 6, which is arranged at the bottom of the deoxidizing tank 5, and is connected to the controller 8 through a signal line 7. In the embodiment, there may be multiple dissolved oxygen sensors. If there are two or more dissolved oxygen sensors, the controller will obtain the average oxygen content according to the weight of each dissolved oxygen sensor, or the data of multiple dissolved oxygen sensors may be The average oxygen content is obtained after averaging.

In this application, the controller 8 is a PLC controller, a transmission device 2 and a power conversion device; the power conversion device is respectively connected with the controller and the transmission device wires; the controller 8 is electrically connected to the transmission device 2 through the control wire 9; The device 2 cooperates with the dosing pump 1 .

As shown in Figure 1, the device for adding and deoxidizing medicinal solution also includes a dosing box 11, a dosing pump 1, a deoxidizing tank 5, an output pipeline 4, an input pipeline 10 and a control valve 3; the medicinal solution is added into the dosing box, In the present application, three dosing pumps are arranged in parallel, and also include three transmission devices and three control valves, corresponding to the three dosing pumps one-to-one.

One end of the input pipeline is connected to the outlet of the dosing box, and the other end is connected to the inlet of the dosing pump; the outlet of the dosing pump is connected to the inlet of the control valve, one end of the output pipeline is connected to the outlet of the control valve, and the other end is connected to the deaerator The inlet of the tank is connected; the transmission device is connected with the adjustment device of the dosing pump. In the technical solution to be applied, the transmission device at least includes a motor, the output shaft of the motor is connected with the manual adjustment button of the flow control valve of the dosing pump or the manual adjustment button of the pulse frequency control valve through the connecting device, and the action of the motor is controlled by the motor. The motor controller is connected with the electrical signal of the controller.

Preferably, the control method of any one of the above-mentioned devices for automatically adjusting and adding deoxidizing medicinal liquid comprises the following steps:

S1. Determine the standard oxygen content in boiler water in the range of 10-30 μg/L.

S2. The dissolved oxygen sensor transmits the detected real-time oxygen content data of the boiler water in the deaerator tank to the controller, and the controller performs separate control according to the difference between the real-time oxygen content and the standard oxygen content;

If the difference is a positive value, the controller sends a control signal to the transmission device to increase the deoxidizing liquid, and the transmission device acts to increase the dosing amount of the dosing pump;

If the difference is 0, the controller does not send a control signal to the transmission;

If the difference is a negative value, the controller sends a control signal to the transmission device to reduce the deoxidizing liquid, and the transmission device acts to reduce the dosing amount of the dosing pump.

The above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited to this. Any changes or replacements that are not conceived of without creative work should be covered within the protection scope of the present invention. Therefore, the present invention The scope of protection shall be subject to the scope of protection defined by the claims.

Claims (8)

1. A device for automatically adjusting and adding oxygen liquid medicine is characterized by comprising a dissolved oxygen sensor, a controller, a transmission device and a power supply conversion device;

the dissolved oxygen sensor is arranged in the deaerating tank and is in electric signal connection with the controller through a lead;

the power supply conversion device is respectively connected with the controller and the transmission device through wires;

the controller is in electric signal connection with the transmission device;

the transmission device is matched with the dosing pump.

2. The device for automatically adjusting the addition of the deoxygenated liquid medicine according to claim 1, wherein the device for adding the deoxygenated liquid medicine further comprises a dosing tank, a dosing pump, a deoxygenating tank, an output pipeline, an input pipeline and a control valve;

One end of the input pipeline is connected with an outlet of the dosing tank, and the other end of the input pipeline is connected with an inlet of the dosing pump; the outlet of the dosing pump is connected with the inlet of the control valve, one end of the output pipeline is connected with the outlet of the control valve, and the other end of the output pipeline is connected with the inlet of the deaerating tank;

the transmission device is connected with the adjusting device of the dosing pump.

3. The device for automatically regulating the addition of an oxygen-scavenging medical fluid according to claim 1, wherein the transmission is mounted on a manual adjustment knob of a dosing pump.

4. The device for automatically adjusting and adding oxygen-removing liquid medicine according to claim 1, wherein the number of the medicine adding pumps is one or more than one, and the number of the transmission devices is the same as that of the medicine adding pumps and corresponds to that of the medicine adding pumps one by one.

5. The apparatus of claim 4 wherein a plurality of dosing pumps are arranged in parallel.

6. The device for automatically adjusting and adding deoxygenated liquid medicine according to claim 1, wherein the dissolved oxygen sensor is arranged at the bottom of the deoxygenating tank.

7. The device for automatically adjusting and adding oxygen-removing liquid medicine according to any one of claims 1 to 6, characterized in that the control method comprises the following steps:

S1, determining the range of the standard oxygen content in the boiler water;

s2, the dissolved oxygen sensor transmits the detected instant oxygen content data of the boiler water in the deaerating tank to the controller, and the controller respectively controls the instant oxygen content data and the standard oxygen content data according to the difference value of the instant oxygen content and the standard oxygen content data;

if the difference value is a positive value, the controller sends a control signal for increasing the deoxygenation liquid medicine to the transmission device, and the transmission device acts to increase the medicine adding amount of the medicine adding pump;

if the difference value is 0, the controller does not send a control signal to the transmission device;

if the difference value is a negative value, the controller sends a control signal for reducing the deoxygenation liquid medicine to the transmission device, and the transmission device acts to reduce the medicine adding amount of the medicine adding pump.

8. The apparatus of claim 7 wherein the standard oxygen content of the boiler water is in the range of 10-30 μ g/L.

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