CN211011299U

CN211011299U - Boiler scale deposit early warning control system

Info

Publication number: CN211011299U
Application number: CN201921563600.3U
Authority: CN
Inventors: 刘枭; 陆建旻; 李晓忠; 陈卫乾; 顾志强
Original assignee: Jiangsu Shuangliang Boiler Co Ltd
Current assignee: Jiangsu Shuangliang Boiler Co Ltd
Priority date: 2019-09-19
Filing date: 2019-09-19
Publication date: 2020-07-14
Anticipated expiration: 2029-09-19

Abstract

A boiler scaling early warning control system comprises two sleeves which are respectively arranged in mounting holes which are arranged in a boiler barrel body and are close to and away from the same horizontal line; the tail parts of the first sleeve and the second sleeve are butt-jointed by a welding flange with a neck and a flange cover; a heating rod and a first temperature transmitter are installed in the hole of the first sleeve flange cover, and a second temperature transmitter is installed in the hole of the second sleeve flange cover; the first temperature transmitter and the second temperature transmitter are connected with the signal input end of the microprocessor or the programmable controller, and the output end of the microprocessor or the programmable controller is connected with the energy switch of the heating rod. Judging and outputting a boiler scaling early warning signal through internal operation of a microprocessor or a programmable controller; and a human-computer interaction interface can be arranged to communicate with the microprocessor programmable controller. The boiler scale remover can remind a boiler user of removing scale in time, and can prevent a plurality of situations that the heat transfer performance is influenced, fuel is wasted, corrosion under the scale, a heating surface is overheated and damaged, and even a pipe explosion accident occurs due to serious scale formation of the boiler.

Description

Boiler scale deposit early warning control system

Technical Field

The utility model relates to a boiler equipment, boiler scale deposit early warning control system. Belongs to the technical field of thermal equipment.

Background

Boiler equipment is one of special equipment widely used in various fields such as industrial production, agricultural production, life heating and the like, and is mainly used for producing steam or hot water. The boiler equipment mainly adopts water as an energy transfer medium, so that the water quality condition of boiler feed water is closely related to the operation condition of the boiler. Some boiler users do not adopt water treatment equipment or water treatment equipment is unqualified, and qualified water quality online monitoring instruments are not used due to price or other factors, so that the water quality condition of boiler feed water cannot be known in time, and calcium, magnesium ions and other heavy metal ions in the boiler feed water seriously exceed the standard. When water is heated and boiled in the boiler, calcium, magnesium ions and other heavy metal ions are separated out from the water to generate scale and are attached to the heated surface of the boiler, such as the inner wall of the boiler, a smoke tube and the like. When the boiler is seriously scaled, the heat transfer performance of the heating surface of the boiler is influenced, the heat efficiency of the boiler is reduced, fuel is wasted, under-scale corrosion and overheating damage of the heating surface can occur, and even tube explosion and other safety accidents which directly influence the operation of the boiler can occur in serious conditions.

The existing scale early warning method is not an ideal method, for example, CN2011239796 discloses a boiler fire tube scale early warning method based on a decision tree system, which comprises the following steps: step (1), acquiring boiler room environment and boiler operation parameter data A, acquiring boiler fire tube scale critical value B, and establishing a fire tube scale error rate table T; step (2): establishing a decision tree system, establishing a comparison system, and logically matching the decision tree system with the comparison system; and (3): the method comprises the steps that an electronic sensor obtains real-time boiler fire tube data and transmits the data to a decision tree system to obtain the probability P of the scale of the fire tube; and (4): if P is more than 0.8, the scale of the fire tube of the boiler is higher than the critical value of the scale of the fire tube, and the central console gives an alarm prompt.

Therefore, it is necessary to provide a boiler scaling early warning control system to ensure the normal operation of the boiler.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a boiler cylinder wall scaling early warning control system, which can remind a boiler user of descaling in time after the boiler scales, and prevent the boiler from seriously scaling, thereby preventing the conditions of affecting heat transfer performance, wasting fuel, corroding under the scale, being overheated and damaged heating surface and even causing pipe explosion accidents and the like; and a boiler user can be timely reminded to check the water quality condition of boiler feed water according to scaling alarm and boiler operation time.

The purpose of the utility model is realized like this: the device comprises two sleeves which are respectively arranged in mounting holes which are arranged in the same horizontal line of a boiler barrel and are separated from each other in a short distance; the tail parts of the first sleeve and the second sleeve are butt-jointed by a welding flange with a neck and a flange cover so as to ensure the sealing property; a heating rod and a first temperature transmitter are installed in the hole of the first sleeve flange cover, and a second temperature transmitter is installed in the hole of the second sleeve flange cover; the first temperature transmitter and the second temperature transmitter can be connected with the signal input end of a microprocessor or a programmable controller, and the output end of the microprocessor or the programmable controller is connected with an energy switch of the heating rod.

The water in the first sleeve and the second sleeve can be exchanged with the water in the boiler drum.

The microprocessor or the programmable controller connected with the first temperature transmitter and the second temperature transmitter can read the water temperature in the first sleeve and the water temperature in the second sleeve, and output a boiler scaling early warning signal through internal judgment, wherein the judgment mechanism is as follows: at non-measuring time, the microprocessor or the programmable controller controls the heating rod to heat, the water temperature of the first sleeve is higher than that of the second sleeve, but the heating rod is disconnected during measurement; comparing the water temperature changes of the first sleeve and the second sleeve, wherein the longer the convergence time of the water temperatures of the first sleeve and the second sleeve is, the more serious the scaling degree is; and a man-machine interaction interface can be arranged, a user can communicate with the microprocessor or the programmable controller, and graph-text display is carried out on the boiler scaling early warning information to remind the boiler user of descaling.

Compared with the prior art, the beneficial effects of the utility model are that: the simple device is adopted for alarming, the utility model can remind the user of the boiler to remove the scale in time after the boiler of the user is scaled, and prevent the boiler from seriously scaling, thereby preventing the conditions of influencing the heat transfer performance, wasting fuel, corroding under the scale, overheating and damaging the heating surface, even causing pipe explosion accidents and the like; and the system can also alarm and operate the boiler according to the scaling, and remind a boiler user to check the water quality condition of boiler feed water in time.

Drawings

FIG. 1 is a schematic view of the installation position of the present invention;

fig. 2 is a schematic view of the structure of the device of the present invention.

Reference numbers in the figures: a boiler barrel 1; a first mounting hole 2; a second mounting hole 3; a first sleeve 4; a second sleeve 5; a first necked-butt welded flange 6; a second necked-butt flange 7; a first flange cover 8; a second flange cover 9; a heating rod 10; a first temperature transmitter 11; a second temperature transmitter 12.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1-2, fig. 1 is a schematic view of the installation position of the present invention. Fig. 2 is a schematic view of the structure of the device of the present invention. As can be seen from the figures 1-2, the utility model discloses boiler scale deposit early warning control system mainly relates to boiler barrel 1; a first mounting hole 2; a second mounting hole 3; a first sleeve 4; a second sleeve 5; a first necked-butt welded flange 6; a second necked-butt flange 7; a first flange cover 8; a second flange cover 9; a heating rod 10; a first temperature transmitter 11; a second temperature transmitter 12. Referring to fig. 1, it can be seen that the boiler barrel 1 is closely separated from two holes, a first mounting hole 2 and a second mounting hole 3, respectively, which are used for mounting a first sleeve 4 and a second sleeve 5, respectively, on the same horizontal line. Referring to fig. 2, it can be seen that the tail of the first sleeve 4 is butt-sealed by the first neck welding flange 6 and the first flange cover 8, the heating rod 10 and the first temperature transmitter 11 are installed on the opening of the first flange cover 8, the tail of the second sleeve 5 is butt-sealed by the second neck welding flange 7 and the second flange cover 9, and the second temperature transmitter 12 is installed on the opening of the second flange cover 9.

The utility model discloses can adopt microprocessor or programmable controller to read temperature in the first sleeve and the temperature in the second sleeve respectively to can communicate with human-computer interaction interface. Referring to fig. 1 to 2, after the present invention is implemented, since the heating rod 10 is disposed in the first sleeve 4, the water temperature inside the first sleeve is higher, calcium, magnesium ions and other heavy metal ions can be more easily separated out from the water, and scale can be more easily generated and attached to the inner and outer walls of the first sleeve 4; since there is no separate heating device in the second sleeve 5, the scale is generated at a slower rate than the first sleeve 4. The temperature of the water in the first sleeve 4 and the second sleeve 5, measured by the first temperature transmitter 11 and the second temperature transmitter 12 respectively, can be output to a microprocessor or a programmable controller, which performs internal operations. The diameter of the first sleeve and the second sleeve is 15-30mm, the length of the first sleeve and the second sleeve is 50-100mm, and the diameter of the front gap is 5-10 mm; the power of the heater, i.e. the heating rod 10, is 5-100W, especially about 20W. At non-measuring time, the microprocessor or the programmable controller controls the heating rod 10 to heat, the water temperature in the first sleeve is higher than that in the second sleeve, but the heating rod 10 is disconnected from heating during measurement; comparing the water temperature changes of the first sleeve and the second sleeve, wherein the longer the convergence time of the water temperatures of the first sleeve and the second sleeve is, the more serious the scaling degree is; and a man-machine interaction interface can be arranged, a user can communicate with the microprocessor or the programmable controller, and graph-text display is carried out on the boiler scaling early warning information to remind the boiler user of descaling.

Claims

1. A boiler scaling early warning control system is characterized by comprising two sleeves, a first sleeve and a second sleeve, wherein the two sleeves are respectively arranged in mounting holes, which are close to and away from the same horizontal line, of a boiler barrel; a heating rod and a first temperature transmitter are installed in the hole of the first sleeve flange cover, and a second temperature transmitter is installed in the hole of the second sleeve flange cover; the first temperature transmitter and the second temperature transmitter are connected with the signal input end of the microprocessor or the programmable controller, and the output end of the microprocessor or the programmable controller is connected with the energy switch of the heating rod.

2. The boiler scaling early warning control system according to claim 1, wherein two sleeves, namely a first sleeve and a second sleeve, are respectively installed in the first installation hole and the second installation hole; the welding device is provided with a first neck butt welding flange, a second neck butt welding flange, a first flange cover, a second flange cover and a heating rod; a first temperature transmitter; a second temperature transmitter; and the tail ends of the two sleeves are in butt joint sealing by adopting a welding flange with a neck and a flange cover.

3. The boiler scaling early warning control system according to claim 2, wherein the front ends of two sleeves of the first sleeve and the second sleeve are reduced in diameter in a frustum shape; and the tail ends of the two sleeves are in butt joint sealing by adopting a welding flange with a neck and a flange cover.

4. The boiler scaling pre-warning control system according to claim 1, wherein the heating rod and the first temperature transmitter are installed in parallel in the sleeve of the first sleeve.

5. The boiler scale early warning control system according to claim 3, wherein the first sleeve and the second sleeve have a diameter of 15-30mm, a length of 50-100mm, and a diameter of a front gap of 5-10 mm.

6. The boiler fouling early warning control system according to claim 4, wherein the heater has a power of 5-100W.