CN214051281U

CN214051281U - Chemical adding device for power plant boiler

Info

Publication number: CN214051281U
Application number: CN202022331134.5U
Authority: CN
Inventors: 柴厚礼; 穆道徐
Original assignee: Lianyungang Huagang Power Equipment Co ltd
Current assignee: Lianyungang Huagang Power Equipment Co ltd
Priority date: 2020-10-20
Filing date: 2020-10-20
Publication date: 2021-08-27
Anticipated expiration: 2030-10-20

Abstract

A chemical adding device for a power plant boiler comprises a chemical box and a chemical adding tank, wherein a chemical adding pipeline communicated with the chemical adding tank is communicated with the chemical box, and a chemical adding valve and a chemical adding flowmeter are installed on the chemical adding pipeline; an external water supply pipeline and a dosing pipeline which is communicated with a power plant boiler are communicated with the dosing tank, and a dosing pump is arranged on the dosing pipeline; the utility model discloses a chemical dosing tank, including (mixing) shaft, add medicine jar, the top of (mixing) shaft extends to the upper portion that adds the medicine jar, and the bottom of (mixing) shaft extends to the outside that adds the medicine jar from the bottom that adds the medicine jar, has the power unit that is used for driving (mixing) shaft pivoted at the bottom fixed mounting that adds the medicine jar, has mechanical seal at the (mixing) shaft and the junction fixed mounting that adds the medicine jar. The device reasonable in design, practical reliable through the setting that adds the medicinal cupping, both can guarantee power boiler's the medicine effect that adds, can effectively improve the speed that takes effect of medicament again, and it is efficient to add the medicine.

Description

Chemical adding device for power plant boiler

Technical Field

The utility model relates to a charge device, especially a power boiler charge device.

Background

The boiler of a power plant is a boiler used for generating power by the power plant in popular terms, generally has larger capacity, the existing main unit is 600MW, the existing advanced boiler is an ultra-supercritical boiler, and the capacity can reach 1000 MW.

At present, after power plant's boiler uses for a long time, must add the medicine to the boiler water and be the in-process to the boiler water, the purpose prevents scale deposit and corruption, but current power plant's boiler is generally bigger, and the medicament adds the back and takes effect slowly, and in the actual operation, often in order to accelerate the drug effect, can excessively add the medicament, can cause the damage to the boiler inner wall on the one hand, has also caused the waste of medicament on the one hand.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that to the not enough of prior art, provide a reasonable in design, convenient to use, become effect fast, add effectual boiler charge device of power plant.

The technical problem to be solved by the utility model is realized through the following technical scheme. The utility model relates to a power plant boiler chemical adding device, which comprises a chemical box and a chemical adding tank, wherein the chemical box is communicated with a chemical adding pipeline communicated with the chemical adding tank, and a chemical adding valve and a chemical adding flowmeter are arranged on the chemical adding pipeline; an external water supply pipeline and a dosing pipeline which is communicated with a power plant boiler are communicated with the dosing tank, and a dosing pump is arranged on the dosing pipeline; the dosing pipeline is also connected with a standby pipeline in parallel, and a standby pump is arranged on the standby pipeline; a heating device is fixedly installed in the dosing tank, a vertically arranged stirring shaft is also installed in the tank body of the dosing tank, the top of the stirring shaft extends to the upper part of the dosing tank, the bottom of the stirring shaft extends to the outer side of the dosing tank from the bottom of the dosing tank, and a plurality of stirring paddles are fixedly installed on the stirring shaft; a power mechanism for driving the stirring shaft to rotate is fixedly arranged at the bottom of the dosing tank, and a mechanical seal is fixedly arranged at the joint of the stirring shaft and the dosing tank.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above power boiler charge device, heating device is provided with 3, 3 heating device along the circumference evenly distributed at the medicine feeding tank middle part.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above power boiler charge device, heating device is stainless steel electric heating pipe.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above power boiler charge device, the stirring rake is provided with 3, and 3 stirring rakes are fixed mounting respectively in the upper portion, middle part and the lower part of (mixing) shaft.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above power boiler charge device, power unit is driving motor, and driving motor fixed mounting is on adding the medicinal cupping, and the (mixing) shaft is connected with driving motor's output transmission.

The utility model discloses the technical problem that solve can also further realize through following technical scheme, to above power boiler charge device, still fixed mounting has the level gauge on the charge tank.

The utility model discloses the technical problem that will solve can also further realize through following technical scheme, to above power boiler charge device, the chemical tank is and leaks hopper-shaped, and the charge jar is cylindricly.

Compared with the prior art, the utility model discloses a set up the chemical tank and still splendid attire the medicament, utilize the medicine adding jar to add the medicament to the boiler, when adding medicine, add the medicament into the medicine adding jar first, then add water and dilute, reuse the (mixing) shaft to stir the medicament in the medicine adding jar, make the medicament diffuse fast, form a large amount of medicament solutions, after adding into the power plant boiler, can diffuse fast, the onset is fast; meanwhile, if the temperature is lower, the heating device can be started to heat the medicament solution in the medicament adding tank, so that the temperature of the medicament reaches the optimal temperature, and the onset speed of the medicament can be further improved; secondly, one medicine adding tank can be provided with a plurality of medicine boxes, so that different medicines can be added conveniently; the dosing tank is provided with the dosing pump and the standby pump, and can be used independently or simultaneously, so that the dosing reliability is ensured. The device reasonable in design, practical reliable through the setting that adds the medicinal cupping, both can guarantee power boiler's the medicine effect that adds, can effectively improve the speed that takes effect of medicament again, and it is efficient to add the medicine.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions in the embodiments of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, a chemical adding device for a power plant boiler comprises a chemical box 1 and a chemical adding tank 2, wherein the chemical adding pipeline 3 communicated with the chemical adding tank 2 is communicated with the chemical box 1, a chemical adding valve 4 and a chemical adding flowmeter 5 are installed on the chemical adding pipeline 3, the chemical adding valve 4 is used for controlling the on-off of the chemical adding pipeline 3, and a manual valve or an electric valve in the prior art can be adopted; the agent adding flowmeter 5 is used for metering the amount of the agent flowing through the agent adding pipeline 3, so that the adding amount of the agent can be conveniently controlled; an external water supply pipeline 6 and a dosing pipeline communicated with a power plant boiler are communicated with the dosing tank 2, a dosing pump 13 is mounted on the dosing pipeline, and the dosing pump 13 is used for inputting the medicament in the dosing tank 2 into the power plant boiler; the drug adding pipeline is also connected with a standby pipeline in parallel, a standby pump 14 is installed on the standby pipeline, the standby pump 14 and the drug adding pump 13 have the same structure and can be used independently or simultaneously, the drug adding amount is convenient to control, and the drug adding reliability is ensured; a heating device 9 is fixedly arranged in the medicine adding tank 2, and the heating device 9 is started when the temperature is low, so that the temperature of the medicine is heated to about 20 ℃, and the medicine property and the acting speed of the medicine are improved; a vertically arranged stirring shaft 7 is further installed in the tank body of the dosing tank 2, the top of the stirring shaft 7 extends to the upper part of the dosing tank 2, the bottom of the stirring shaft 7 extends to the outer side of the dosing tank 2 from the bottom of the dosing tank 2, and a plurality of stirring paddles 8 are fixedly installed on the stirring shaft 7; a power mechanism 12 for driving the stirring shaft 7 to rotate is fixedly installed at the bottom of the dosing tank 2, a mechanical seal 11 is fixedly installed at the joint of the stirring shaft 7 and the dosing tank 2, and the power mechanism 12 is used for driving the stirring shaft 7 to drive the stirring paddle 8 to rotate so as to stir the medicament in the dosing tank 2; the stirring shaft 7 adopts a lower driving type, can stir the bottom of the dosing tank 2, and avoids medicament from depositing at the bottom of the dosing tank 2; the mechanical seal 11 is a mechanical seal 11 in the prior art, which is a device for preventing fluid leakage, and the device is formed by at least one pair of end faces perpendicular to the rotation axis, and the end faces are kept jointed and relatively slide under the action of fluid pressure and the elastic force (or magnetic force) of a compensation mechanism and under the matching of auxiliary sealing, so that the sealing performance of the joint of the stirring shaft 7 and the dosing tank 2 can be ensured, and the rotation of the stirring shaft 7 is not influenced.

The application improves the onset speed of the medicament by arranging the medicament adding tank 2, is particularly suitable for granular medicaments, and can pre-dissolve the medicament; this application sets up one and adds medicinal cupping 2 in the reality, disposes 2-5 medicament casees 1, is convenient for carry out the interpolation of different medicaments simultaneously or in order.

Heating device 9 is provided with 3, and 3 heating device 9 are along the circumference evenly distributed who adds 2 middle parts of medicinal cupping for medicament solution to in adding medicinal cupping 2 carries out comprehensive, even heating, thereby guarantee that medicament solution is heated evenly, the uniformity.

The heating device 9 is a stainless steel electric heating tube, and is firm, reliable, convenient to install and use and long in service life.

Stirring rake 8 is provided with 3, and 3 stirring rake 8 is fixed mounting respectively in the upper portion of (mixing) shaft 7, middle part and lower part, is used for stirring the medicament solution in adding medicinal cupping 2 in upper portion, middle part and the lower part that adds medicinal cupping 2 respectively for dissolving, the mixing of medicament.

The power mechanism 12 is a driving motor which is fixedly arranged on the dosing tank 2, and the stirring shaft 7 is in transmission connection with the output end of the driving motor. A transmission gear is fixedly installed on an output shaft of the driving motor, a fixed gear meshed with the transmission gear is fixedly installed on the stirring shaft 7 outside the medicine adding tank 2, the driving motor acts, and the stirring shaft 7 is driven to rotate through the cooperation of the transmission gear and the fixed gear.

A liquid level meter 10 is also fixedly arranged on the medicine adding tank 2. The liquid level meter 10 is used for detecting the liquid level in the medicine adding tank 2, so that the water inflow added into the medicine adding tank 2 can be conveniently controlled, and the amount of the medicament solution in the medicine adding tank 2 can be conveniently known.

The chemical box 1 is funnel-shaped, and the chemical box 1 is fixedly arranged above the chemical adding tank 2 through a bracket, so that the chemical box is convenient to design and manufacture, is convenient to contain chemicals, and is convenient to input the chemicals into the chemical adding tank 2 from the chemical box 1; add medicinal cupping 2 and be cylindric, be convenient for preparation, installation also make things convenient for the fixed mounting of heating device 9 and (mixing) shaft 7 simultaneously, also be convenient for the medicament mix, export in adding medicinal cupping 2.

Claims

1. The utility model provides a power plant's boiler charge device which characterized in that: the device comprises a medicament box and a medicament feeding tank, wherein a medicament feeding pipeline communicated with the medicament feeding tank is communicated on the medicament box, and a medicament feeding valve and a medicament feeding flowmeter are installed on the medicament feeding pipeline; an external water supply pipeline and a dosing pipeline which is communicated with a power plant boiler are communicated with the dosing tank, and a dosing pump is arranged on the dosing pipeline; the dosing pipeline is also connected with a standby pipeline in parallel, and a standby pump is arranged on the standby pipeline; a heating device is fixedly installed in the dosing tank, a vertically arranged stirring shaft is also installed in the tank body of the dosing tank, the top of the stirring shaft extends to the upper part of the dosing tank, the bottom of the stirring shaft extends to the outer side of the dosing tank from the bottom of the dosing tank, and a plurality of stirring paddles are fixedly installed on the stirring shaft; a power mechanism for driving the stirring shaft to rotate is fixedly arranged at the bottom of the dosing tank, and a mechanical seal is fixedly arranged at the joint of the stirring shaft and the dosing tank;

the number of the heating devices is 3, and the 3 heating devices are uniformly distributed along the circumferential direction of the middle part of the medicine adding tank;

the stirring rake is provided with 3, and 3 stirring rakes are fixed mounting respectively in the upper portion of (mixing) shaft, middle part and lower part.

2. The chemical adding device for the power plant boiler according to claim 1, wherein: the heating device is a stainless steel electric heating pipe.

3. The chemical adding device for the power plant boiler according to claim 1, wherein: the power mechanism is a driving motor which is fixedly arranged on the medicine adding tank, and the stirring shaft is in transmission connection with the output end of the driving motor.

4. The chemical adding device for the power plant boiler according to claim 1, wherein: a liquid level meter is fixedly arranged on the medicine adding tank.

5. The chemical adding device for the power plant boiler according to claim 1, wherein: the medicament case is hourglass hopper-shaped, and the jar that adds the medicine is cylindricly.