Economizer for waste heat steam boiler

Abstract

The utility model provides an economizer for a waste heat steam boiler, and belongs to the technical field of economizers. The economizer for the waste heat steam boiler comprises an economizer body, a water inlet pipe, a water outlet pipe, a smoke exhaust pipe, a smoke inlet pipe, an ash removal cover and a locking mechanism, when the economizer is used, after accumulated ash is removed, a limiting plate is pulled again to ascend by a certain height, then the ash removal cover is closed, an inserting rod enters a limiting hole, then the limiting plate is loosened, and the locking mechanism is locked. Under the counter-acting force of the spring, the limiting plate is arranged on the inserting rod in a sleeving mode, and then the dust removal cover is fixed; according to the economizer for the waste heat steam boiler, the temperature difference between the second thermometer and the first thermometer or the temperature difference between the fourth thermometer and the third thermometer is used for accurately judging whether accumulated dust on a pipe bundle in the economizer body needs to be cleaned or not, and it is ensured that the accumulated dust on the pipe bundle can be cleaned in time; and better use experience is brought to a user.

Description

Technical Field

[0001] The present application relates to the technical field of economizers, and in particular to an economizer for a waste heat steam boiler. Background Art

[0002] Economizer is a device installed at the bottom of the flue at the tail of the boiler to recover the waste heat of the exhaust gas. It heats the boiler feed water into a saturated water heating surface under the drum pressure. Because it absorbs the heat of the high-temperature flue gas, it reduces the exhaust temperature of the flue gas, saves energy and improves efficiency, so it is called an economizer. The flue gas flows through the tube bundle in the economizer to achieve heat exchange, that is, to achieve the purpose of cooling the flue gas. At present, due to the dust contained in the flue gas, the dust will accumulate on the tube bundle. In order to ensure the heat exchange rate between water and flue gas, it is necessary to clean the tube bundle in the economizer regularly. The cleaning cycle of the tube bundle is often formulated by the staff according to work experience. It is often the case that the dust on the tube bundle is not cleaned in time, which brings a bad user experience. Utility Model Content

[0003] In order to remedy the above deficiencies, the present application provides an economizer for a waste heat steam boiler, which aims to improve the current situation in which dust accumulates on the tube bundle due to dust contained in the flue gas. In order to ensure the heat exchange rate between water and flue gas, it is necessary to clean the tube bundle in the economizer regularly. The cleaning cycle of the tube bundle is often formulated by the staff according to their work experience, and the problem of untimely cleaning of the accumulated dust on the tube bundle often occurs.

[0004] This application is implemented as follows:

[0005] The present application provides an economizer for a waste heat steam boiler, comprising an economizer body, a water inlet pipe, a water outlet pipe, a smoke exhaust pipe, a smoke inlet pipe, a ash cleaning cover and a locking mechanism, wherein the water inlet pipe, the water outlet pipe, the smoke exhaust pipe and the smoke inlet pipe are all arranged on the economizer body, and the ash cleaning cover is fixed to the economizer body through a hinge;

[0006] The locking mechanism is simultaneously arranged on the economizer body and the ash cleaning cover, and the locking mechanism is used to fix the ash cleaning cover on the economizer body. A first thermometer is arranged on the water inlet pipe, a second thermometer is arranged on the water outlet pipe, a third thermometer is arranged on the smoke exhaust pipe, and a fourth thermometer is arranged on the smoke inlet pipe.

[0007] In one embodiment of the present application, the ends of the water inlet pipe, the water outlet pipe, the smoke exhaust pipe and the smoke inlet pipe are all fixedly mounted with connecting plates, and the connecting plates are provided with mounting holes.

[0008] In one embodiment of the present application, the locking mechanism includes an insert rod, a cross block, a spring and a limit plate, the lower end of the insert rod is fixed on the upper surface of the cleaning cover, the cross block is fixed on the outer wall of the economizer body, the insert rod is inserted on the cross block, the spring is fixed between the upper surface of the cross block and the lower surface of the limit plate, and the insert rod slides through the limit plate.

[0009] In one embodiment of the present application, a limiting hole is provided on the transverse block, and the insertion rod is inserted into the limiting hole.

[0010] In one embodiment of the present application, a through hole is formed on the limiting plate, and the insertion rod slides through the through hole.

[0011] In one embodiment of the present application, a plurality of springs are provided, and the plurality of springs are linearly and equidistantly arranged on the cross block.

[0012] The beneficial effects of the present application are as follows: the present application obtains an economizer for a waste heat steam boiler through the above-mentioned design. When in use, while the economizer body is working, the first thermometer monitors the temperature of the inlet water in real time, the second thermometer monitors the temperature of the outlet water in real time, the fourth thermometer monitors the temperature of the inlet smoke in real time, and the third thermometer monitors the temperature of the exhaust smoke in real time. When the control terminal detects that the temperature difference between the second thermometer and the first thermometer is less than the set value or the temperature difference between the fourth thermometer and the third thermometer is less than the set value, the control terminal alarms to remind the staff to clean the tube bundle in the economizer body. When cleaning the tube bundle in the economizer body, pull the limit plate to separate the limit plate from the insertion rod. , open the cleaning cover to ensure that the cleaned dust will not accumulate at the bottom of the economizer body. After the ash accumulation is cleaned, pull the limit plate again to make the limit plate rise to a certain height, and then close the cleaning cover to make the insertion rod enter the limit hole, and then release the limit plate, and make the limit plate sleeve on the insertion rod under the reaction force of the spring, that is, the cleaning cover is fixed. The economizer for the waste heat steam boiler uses the temperature difference between the second thermometer and the first thermometer or the temperature difference between the fourth thermometer and the third thermometer to accurately judge whether it is necessary to clean the ash accumulation on the tube bundle in the economizer body, so as to ensure that the ash accumulation on the tube bundle can be cleaned in time, bringing better user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the drawings required for use in the implementation methods will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of an economizer for a waste heat steam boiler provided in an embodiment of the present application;

[0015] Figure 2 A diagram showing the relationship between the economizer body and the ash cleaning cover provided in the embodiment of the present application;

[0016] Figure 3 A schematic diagram of the three-dimensional structure of the locking mechanism provided in the embodiment of the present application;

[0017] Figure 4 Provided for the implementation of this application Figure 3 Magnified view of area A.

[0018] In the figure: 110- economizer body; 120- water inlet pipe; 130- water outlet pipe; 140- first thermometer; 150- second thermometer; 160- smoke exhaust pipe; 170- third thermometer; 180- smoke inlet pipe; 190- fourth thermometer; 191- connecting plate; 192- ash cleaning cover; 193- locking mechanism; 1931- plug rod; 1932- cross block; 1933- limit hole; 1934- spring; 1935- limit plate; 1936- through hole. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solutions and advantages of the implementation methods of this application clearer, the technical solutions in the implementation methods of this application will be clearly and completely described below in conjunction with the drawings in the implementation methods of this application. Obviously, the described implementation methods are part of the implementation methods of this application, not all of the implementation methods. Based on the implementation methods in this application, all other implementation methods obtained by ordinary technicians in this field without creative work are within the scope of protection of this application. Example

[0020] See also Figure 1-Figure 4 The present application provides a technical solution: an economizer for a waste heat steam boiler, comprising an economizer body 110, a water inlet pipe 120, a water outlet pipe 130, a smoke exhaust pipe 160, a smoke inlet pipe 180, a ash cleaning cover 192 and a locking mechanism 193, wherein the water inlet pipe 120, the water outlet pipe 130, the smoke exhaust pipe 160 and the smoke inlet pipe 180 are all arranged on the economizer body 110, the ash cleaning cover 192 is fixed to the economizer body 110 by a hinge, and the ends of the water inlet pipe 120, the water outlet pipe 130, the smoke exhaust pipe 160 and the smoke inlet pipe 180 are all fixedly installed with a connecting plate 191, and a mounting hole is opened on the connecting plate 191, and the arrangement of the connecting plate 191 facilitates the installation of the water inlet pipe 120, the water outlet pipe 130, the smoke exhaust pipe 160 and the smoke inlet pipe 180;

[0021] The locking mechanism 193 is provided on both the economizer body 110 and the ash cleaning cover 192. The locking mechanism 193 is provided to fix the ash cleaning cover 192 on the economizer body 110. The locking mechanism 193 comprises an insert rod 1931, a cross block 1932, a spring 1934 and a limit plate 1935. The lower end of the insert rod 1931 is fixed on the upper surface of the ash cleaning cover 192. The cross block 1932 is fixed on the outer wall of the economizer body 110. The insert rod 1931 is inserted on the cross block 1932. The spring 1934 is fixed between the upper surface of the cross block 1932 and the lower surface of the limit plate 1935. The insert rod 1931 slides through the limit plate 1935. The provision of the spring 1934 and the limit plate 1935 facilitates the quick opening or closing of the ash cleaning cover 192.

[0022] A limit hole 1933 is provided on the cross block 1932, and the insertion rod 1931 is inserted in the limit hole 1933. The setting of the limit hole 1933 facilitates the movement of the insertion rod 1931 on the cross block 1932. A through hole 1936 is provided on the limit plate 1935, and the insertion rod 1931 slides through the through hole 1936. The setting of the through hole 1936 facilitates the insertion rod 1931 to pass through the limit plate 1935. A plurality of springs 1934 are provided, and the plurality of springs 1934 are linearly equidistantly provided on the cross block 1932. The setting of the plurality of springs 1934 makes the stress of the limit plate 1935 stronger. A first thermometer 140 is provided on the water inlet pipe 120, a second thermometer 150 is provided on the water outlet pipe 130, a third thermometer 170 is provided on the smoke exhaust pipe 160, and a fourth thermometer 190 is provided on the smoke inlet pipe 180.

[0023] Specifically, the working principle of the economizer for the waste heat steam boiler is as follows: when in use, the economizer body 110 is working, the first thermometer 140 monitors the temperature of the incoming water in real time, the second thermometer 150 monitors the temperature of the outgoing water in real time, the fourth thermometer 190 monitors the temperature of the incoming smoke in real time, and the third thermometer 170 monitors the temperature of the exhaust smoke in real time. When the control terminal detects that the temperature difference between the second thermometer 150 and the first thermometer 140 is less than the set value or the temperature difference between the fourth thermometer 190 and the third thermometer 170 is less than the set value, the control terminal alarms to remind the staff to clean the tube bundle in the economizer body 110. When cleaning the tube bundle in the economizer body 110, pull the limit plate 1935 to separate the limit plate 1935 from the insertion rod 1931, so as to open the cleaning cover 192 and ensure that the cleaning cover 192 is opened. The dust under cleaning will not accumulate at the bottom of the economizer body 110. After the dust is cleaned, pull the limit plate 1935 again to make the limit plate 1935 rise to a certain height, and then close the cleaning cover 192 to make the insertion rod 1931 enter the limit hole 1933, and then release the limit plate 1935. Under the reaction force of the spring 1934, the limit plate 1935 is sleeved on the insertion rod 1931, thereby fixing the cleaning cover 192. The economizer for the waste heat steam boiler uses the temperature difference between the second thermometer 150 and the first thermometer 140 or the temperature difference between the fourth thermometer 190 and the third thermometer 170 to accurately judge whether it is necessary to clean the dust on the tube bundle in the economizer body 110, so as to ensure that the dust on the tube bundle can be cleaned in time, bringing better user experience.

[0024] It should be noted that the specific model specifications of the economizer body 110, the first temperature meter 140, the second temperature meter 150, the third temperature meter 170 and the fourth temperature meter 190 need to be selected and determined according to the actual specifications of the device, etc. The specific selection calculation method adopts the existing technology in the field, so it will not be described in detail.

[0025] The power supply and principle of the economizer body 110, the first thermometer 140, the second thermometer 150, the third thermometer 170 and the fourth thermometer 190 are clear to those skilled in the art and will not be described in detail herein.

[0026] The above description is only an embodiment of the present application and is not intended to limit the scope of protection of the present application. For those skilled in the art, the present application may have various changes and variations. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application should be included in the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

Claims

1. A waste heat steam boiler economizer, characterized in that: The economizer comprises an economizer body (110), a water inlet pipe (120), a water outlet pipe (130), a smoke exhaust pipe (160), a smoke inlet pipe (180), a ash cleaning cover (192) and a locking mechanism (193), wherein the water inlet pipe (120), the water outlet pipe (130), the smoke exhaust pipe (160) and the smoke inlet pipe (180) are all arranged on the economizer body (110), and the ash cleaning cover (192) is fixed to the economizer body (110) via a hinge; The locking mechanism (193) is provided on the economizer body (110) and the ash cleaning cover (192) at the same time, and the locking mechanism (193) is provided for fixing the ash cleaning cover (192) on the economizer body (110). The water inlet pipe (120) is provided with a first thermometer (140), the water outlet pipe (130) is provided with a second thermometer (150), the smoke exhaust pipe (160) is provided with a third thermometer (170), and the smoke inlet pipe (180) is provided with a fourth thermometer (190).

2. The economizer for a waste heat steam boiler according to claim 1, characterized in that: The ends of the water inlet pipe (120), the water outlet pipe (130), the smoke exhaust pipe (160) and the smoke inlet pipe (180) are all fixedly mounted with connecting plates (191), and the connecting plates (191) are provided with mounting holes.

3. The economizer for a waste heat steam boiler according to claim 1, characterized in that: The locking mechanism (193) comprises an insert rod (1931), a cross block (1932), a spring (1934) and a limit plate (1935); the lower end of the insert rod (1931) is fixed on the upper surface of the cleaning cover (192); the cross block (1932) is fixed on the outer wall of the economizer body (110); the insert rod (1931) is inserted on the cross block (1932); the spring (1934) is fixed between the upper surface of the cross block (1932) and the lower surface of the limit plate (1935); and the insert rod (1931) slides through the limit plate (1935).

4. The economizer for a waste heat steam boiler according to claim 3, characterized in that: The horizontal block (1932) is provided with a limiting hole (1933), and the insertion rod (1931) is inserted into the limiting hole (1933).

5. The economizer for a waste heat steam boiler according to claim 3, characterized in that: The limiting plate (1935) is provided with a through hole (1936), and the insertion rod (1931) slides through the through hole (1936).

6. The economizer for a waste heat steam boiler according to claim 3, characterized in that: The spring (1934) is provided in plurality, and the plurality of springs (1934) are linearly and equidistantly arranged on the cross block (1932).

Images