Waste heat recovery device capable of descaling

Abstract

The utility model provides a descaling waste heat recovery device which comprises a recovery box and a descaling assembly, supporting legs are installed on the lower side surface of the recovery box, the left side surface and the right side surface of the recovery box are respectively provided with a smoke pipe, a heat exchange pipe is installed in the recovery box, and a water inlet pipe and a water outlet pipe are installed on the upper side surface of the recovery box. Compared with the prior art, the recycling device has the advantages that the heat exchange pipe is arranged, the snake-shaped heat exchange pipe is designed, so that the length and the surface area of a pipeline are increased, more heat exchange surfaces are provided, the heat conduction efficiency is improved, and the recycling device is convenient to use; and strong impact force and stripping force can be generated, dirt, incrustation, sediment and the like in the recycling box and on the outer side surface of the heat exchange pipe can be effectively removed, corrosion and oxidation of equipment are reduced, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model belongs to the field of waste heat recovery equipment, and in particular relates to a waste heat recovery device capable of removing scale. Background Art

[0002] The waste heat recovery device is a device used to convert waste heat in flue gas generated in industrial production processes into usable energy. However, the waste heat recovery device of the prior art has the problem of scaling affecting the heat conduction efficiency in actual use. This is because there is a lack of descaling components. The lack of descaling components will not only lead to the above problems, but also the problem that scaling will cause overheating and increased heat load of the equipment. First, scaling will affect the heat conduction efficiency. When a thick layer of scale accumulates on the surface of the flue gas heat exchanger inside the waste heat recovery device, it will hinder the conduction of heat. The existence of this scale layer will form an insulating layer, making it difficult for heat to be effectively transferred to the working medium, thereby reducing the efficiency of heat recovery. Not only will a large amount of energy be lost, but effective energy utilization will also be impossible to achieve, affecting the overall performance of the equipment. Secondly, scaling will cause overheating and increased heat load of the equipment. When a thick layer of scale forms on the surface of the flue gas heat exchanger, the heat cannot be fully absorbed, resulting in an increase in the surface temperature of the device or even overheating. Overheating will shorten the life of the equipment and may cause problems such as abnormal operation of the equipment and increased heat loss. At the same time, the heat load will also increase, and the equipment will need to consume more energy to maintain the same heat exchange effect, increasing the operating cost, so a new structure needs to be proposed to solve the above technical problems. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model aims to provide a waste heat recovery device capable of descaling, so as to solve the problems raised in the above-mentioned background technology.

[0004] The utility model is realized through the following technical scheme: a waste heat recovery device capable of descaling, comprising: a recovery box and a descaling assembly, wherein a support leg is installed on the lower surface of the recovery box, a flue gas pipe is installed on the left surface and the right surface of the recovery box respectively, a heat exchange pipe is installed inside the recovery box, a water inlet pipe and a water outlet pipe are installed on the upper surface of the recovery box, a descaling assembly is installed throughout the interior of the recovery box, the descaling assembly comprises a high-pressure pipe, a high-pressure nozzle, a dosing piece and a fixing piece, a dosing piece is installed on the outer surface of the high-pressure pipe, a plurality of high-pressure nozzles are evenly installed on the outer surface of the high-pressure pipe, a solenoid valve is installed on the outer surface of the high-pressure pipe, the water inlet end of the heat exchange pipe is aligned and connected with the water inlet pipe, and the water outlet end of the heat exchange pipe is aligned and connected with the water outlet pipe.

[0005] As a preferred embodiment, a supporting leg is respectively installed at the four corners of the lower surface of the recycling box, and a universal wheel is installed at the end of the supporting leg away from the recycling box, and the universal wheel is a self-locking universal wheel. The bottom of the interior of the recycling box is a conical structure, and a sewage pipe is installed at the center of the lower surface of the recycling box. The sewage pipe passes through the bottom of the recycling box and is arranged inside the recycling box, and an electromagnetic valve is arranged on the outer surface of the sewage pipe.

[0006] As a preferred embodiment, a flue gas pipe is symmetrically installed on the lower edge of the left surface and the right surface of the recovery box, respectively. The two flue gas pipes have the same structure, are connected to the inside of the recovery box, and are connected to the waste heat supply device through a pipeline.

[0007] As a preferred embodiment, the heat exchange tube is arranged in a serpentine structure inside the recovery box. The material of the heat exchange tube is brass. The water inlet pipe and the water outlet pipe have the same structure. The end of the water inlet pipe away from the recovery box is connected to the water supply equipment, and the end of the water outlet pipe away from the recovery box is connected to the storage equipment. A sealing ring is provided at the connection between the water inlet pipe and the water outlet pipe. The serpentine design of the heat exchange tube increases the length and surface area of ​​the pipeline, provides more heat exchange surfaces, thereby enhancing the heat conduction efficiency and facilitating use.

[0008] As a preferred embodiment, a high-pressure pipe is installed through the right edge of the upper surface of the recovery box, and the high-pressure pipe is a horizontal L-shaped structure. The end of the high-pressure pipe away from the recovery box is connected to the high-pressure water supply equipment, and a plurality of fixings are evenly installed on the outer surface of the high-pressure pipe, and the end of the fixing away from the high-pressure pipe is fixedly connected to the upper surface of the inside of the recovery box. Descaling operation is performed by a high-pressure nozzle, which can remove dirt in the heat exchanger, restore the clean state of the heat exchanger surface, improve the heat conduction efficiency, and thus improve the energy recovery rate of the waste heat recovery device. The high-pressure water jet from the high-pressure nozzle can generate a strong impact force and stripping force, which can effectively remove dirt, scale, sediment, etc. inside the recovery box and on the outer surface of the heat exchange tube, reduce corrosion and oxidation of the equipment, and extend the life of the device.

[0009] As a preferred embodiment, a dosing port is provided on the outer surface of the dosing piece on the outer surface of the high-pressure pipe, and the material of the high-pressure pipe is a high-chromium alloy.

[0010] After adopting the above technical solution, the utility model has the following beneficial effects: by setting the heat exchange tube, the heat exchange tube is installed inside the recovery box, the water inlet end of the heat exchange tube is connected to the water inlet pipe, the water outlet end of the heat exchange tube is connected to the water outlet pipe, the heat exchange tube has a serpentine structure, and the serpentine heat exchange tube design increases the length and surface area of ​​the pipe, provides more heat exchange surface, thereby enhancing the heat conduction efficiency and facilitating use;

[0011] The descaling assembly includes a high-pressure pipe, a high-pressure nozzle, a dosing piece and a fixing piece. The high-pressure pipe is installed through the inside of the recovery box. A plurality of high-pressure nozzles and fixing pieces are evenly installed on the outer surface of the high-pressure pipe. The end of the fixing piece away from the high-pressure pipe is connected to the upper surface of the inside of the recovery box. The outer surface of the high-pressure pipe is installed with a dosing piece and a solenoid valve. The accumulation of scale and dirt will reduce the heat transfer efficiency of the heat exchange tube and cause energy loss. Descaling operation is performed by a high-pressure nozzle, which can remove the dirt in the heat exchanger, restore the clean state of the heat exchanger surface, improve the heat transfer efficiency, and thus improve the energy recovery rate of the waste heat recovery device. The high-pressure water jet from the high-pressure nozzle can generate a strong impact force and stripping force, which can effectively remove the dirt, scale, sediment, etc. inside the recovery box and on the outer surface of the heat exchange tube, reduce corrosion and oxidation of the equipment, and extend the life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 The utility model is a schematic diagram of the overall structure of a waste heat recovery device capable of descaling.

[0014] Figure 2 It is a schematic diagram of a descaling component of a waste heat recovery device capable of descaling according to the utility model.

[0015] In the figure, 100-recovery box, 110-smoke pipe, 120-support leg, 130-drain pipe;

[0016] 200-heat exchange tube, 210-water inlet pipe, 220-water outlet pipe;

[0017] 300- descaling assembly, 310- high-pressure pipe, 320- high-pressure nozzle, 330- fixing parts, 340- dosing parts. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1 to Figure 2 The utility model provides a technical solution: a waste heat recovery device capable of descaling, comprising: a recovery box 100, a descaling assembly 300, a support leg 120 installed on the lower surface of the recovery box 100, a flue gas pipe 110 installed on the left and right surfaces of the recovery box 100, a heat exchange pipe 200 installed inside the recovery box 100, a water inlet pipe 210 and a water outlet pipe 220 installed on the upper surface of the recovery box 100, and a heat exchange pipe 200 installed inside the recovery box 100. A descaling assembly 300 is installed, and the descaling assembly 300 includes a high-pressure pipe 310, a high-pressure nozzle 320, a dosing piece 340 and a fixing piece 330. The dosing piece 340 is installed on the outer surface of the high-pressure pipe 310, and multiple high-pressure nozzles 320 are evenly installed on the outer surface of the high-pressure pipe 310. A solenoid valve is installed on the outer surface of the high-pressure pipe 310. The water inlet end of the heat exchange tube 200 is aligned and connected with the water inlet pipe 210, and the water outlet end of the heat exchange tube 200 is aligned and connected with the water outlet pipe 220.

[0020] See also Figure 1 , Figure 2 As an embodiment of the utility model: a support leg 120 is respectively installed at the four corners of the lower surface of the recycling box 100, and a universal wheel is installed at one end of the support leg 120 away from the recycling box 100, and the universal wheel is a self-locking universal wheel. The bottom of the recycling box 100 is a conical structure, and a sewage pipe 130 is installed at the center of the lower surface of the recycling box 100. The sewage pipe 130 runs through the bottom of the recycling box 100 and is set inside the recycling box 100. The outer surface of the sewage pipe 130 is provided with a solenoid valve;

[0021] A flue gas pipe 110 is symmetrically installed on the lower edge of the left surface and the right surface of the recovery box 100. The two flue gas pipes 110 have the same structure. The flue gas pipes 110 are connected to the inside of the recovery box 100 and are connected to the waste heat supply device through a pipeline.

[0022] The heat exchange tube 200 is arranged in a serpentine structure inside the recovery box 100. The material of the heat exchange tube 200 is brass. The water inlet pipe 210 and the water outlet pipe 220 have the same structure. The end of the water inlet pipe 210 away from the recovery box 100 is connected to the water supply device, and the end of the water outlet pipe 220 away from the recovery box 100 is connected to the storage device. A sealing ring is provided at the connection between the water inlet pipe 210 and the water outlet pipe 220;

[0023] When in use, the user first introduces the flue gas generated by the waste heat supply equipment into the recovery box 100 through the flue pipe 110, and then the user injects the fluid that needs heat exchange into the heat exchange tube 200 through the water inlet pipe 210 on the upper surface of the recovery box 100. Then, the flue gas entering the recovery box 100 will heat the heat exchange tube 200, and then perform heat exchange and heating operations on the fluid inside the heat exchange tube 200. Since the heat exchange tube 200 has a serpentine structure, the serpentine heat exchange tube 200 design increases the length and surface area of ​​the pipeline, provides more heat exchange surfaces, thereby enhancing the heat conduction efficiency and facilitating use.

[0024] See also Figure 1 , Figure 2 As an embodiment of the present utility model: a high-pressure pipe 310 is installed through the right edge of the upper surface of the recycling box 100, and the high-pressure pipe 310 is a horizontal L-shaped structure. The end of the high-pressure pipe 310 away from the recycling box 100 is connected to the high-pressure water supply equipment. A plurality of fixing members 330 are evenly installed on the outer surface of the high-pressure pipe 310. The end of the fixing member 330 away from the high-pressure pipe 310 is fixedly connected to the upper surface of the interior of the recycling box 100;

[0025] The outer surface of the dosing member 340 on the outer surface of the high-pressure pipe 310 is provided with a dosing port, and the material of the high-pressure pipe 310 is a high chromium alloy;

[0026] During use, since the flue gas is introduced into the recovery box 100 through the flue pipe 110, the flue gas will contain solid flue gas particles. After long-term use, the flue gas particles in the flue gas will adhere to the heat exchange tube 200 and the inside of the recovery box 100 to cause scaling. At this time, the user can start the high-pressure water supply equipment to inject a high-pressure water source into the high-pressure pipe 310, and then the high-pressure nozzle 320 on the outer surface of the high-pressure pipe 310 will spray out a high-pressure water flow. The user can add a descaling agent through the dosing port on the outer surface of the dosing part 340 according to actual needs, so that the high-pressure water flow can perform a better descaling operation. The accumulation of scale layers and dirt will reduce the heat transfer efficiency of the heat exchange tube 200 and cause energy loss. Descaling through the high-pressure nozzle 320 can remove the scale inside the heat exchanger. The dirt on the heat exchanger surface can be removed to restore the clean state, improve the heat transfer efficiency, and thus improve the energy recovery rate of the waste heat recovery device. The high-pressure water jet from the high-pressure nozzle 320 can generate a strong impact force and stripping force, which can effectively remove the dirt, scale, sediment, etc. inside the recovery box 100 and the outer surface of the heat exchange tube 200, reduce the corrosion and oxidation of the equipment, and extend the life of the device. When the descaling component 300 impacts the scale, the scaling material will fall into the conical structure inside the recovery box 300, and then the solenoid valve on the outer surface of the drain pipe 130 can be opened to discharge the sewage (the high-pressure water supply equipment can be a high-pressure water pump or other water supply equipment, and its model can be selected from the market product model. Its structure and principle are all existing technologies and will not be repeated here).

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A waste heat recovery device capable of descaling, comprising: A recovery box (100) and a descaling assembly (300), characterized in that a support leg (120) is installed on the lower surface of the recovery box (100), a flue gas pipe (110) is installed on the left and right surfaces of the recovery box (100), and a heat exchange pipe (200) is installed inside the recovery box (100); A water inlet pipe (210) and a water outlet pipe (220) are installed on the upper surface of the recovery box (100), and a descaling assembly (300) is installed through the interior of the recovery box (100), wherein the descaling assembly (300) comprises a high-pressure pipe (310), a high-pressure nozzle (320), a dosing member (340), and a fixing member (330); A dosing member (340) is installed on the outer surface of the high-pressure pipe (310), a plurality of high-pressure nozzles (320) are evenly installed on the outer surface of the high-pressure pipe (310), a solenoid valve is installed on the outer surface of the high-pressure pipe (310), the water inlet end of the heat exchange pipe (200) is aligned and connected to the water inlet pipe (210), and the water outlet end of the heat exchange pipe (200) is aligned and connected to the water outlet pipe (220).

2. A descaling waste heat recovery device according to claim 1, characterized in that: A support leg (120) is respectively installed at the four corners of the lower surface of the recycling box (100); a universal wheel is installed at one end of the support leg (120) away from the recycling box (100); the universal wheel is a self-locking universal wheel; the bottom of the interior of the recycling box (100) is in a conical structure; a sewage pipe (130) is installed at the center of the lower surface of the recycling box (100); the sewage pipe (130) passes through the bottom of the recycling box (100) and is arranged inside the recycling box (100); and a solenoid valve is arranged on the outer surface of the sewage pipe (130).

3. A descaling waste heat recovery device as claimed in claim 2, characterized in that: A flue gas pipe (110) is symmetrically mounted on the lower edge of the left surface and the right surface of the recovery box (100), respectively; the two flue gas pipes (110) have the same structure; the flue gas pipes (110) are interconnected with the interior of the recovery box (100); and the flue gas pipes (110) are connected to a waste heat supply device via a pipeline.

4. A descaling waste heat recovery device as claimed in claim 3, characterized in that: The heat exchange tube (200) is arranged in a serpentine structure inside the recovery box (100); the heat exchange tube (200) is made of brass; the water inlet pipe (210) and the water outlet pipe (220) have the same structure; one end of the water inlet pipe (210) away from the recovery box (100) is connected to a water supply device; one end of the water outlet pipe (220) away from the recovery box (100) is connected to a storage device; and a sealing ring is provided at the connection between the water inlet pipe (210) and the water outlet pipe (220).

5. A descalable waste heat recovery device according to claim 4, characterized in that: A high-pressure pipe (310) is installed through the right edge of the upper surface of the recovery box (100); the high-pressure pipe (310) is in a horizontal L-shaped structure; one end of the high-pressure pipe (310) away from the recovery box (100) is connected to a high-pressure water supply device; a plurality of fixing members (330) are evenly installed on the outer surface of the high-pressure pipe (310); one end of the fixing member (330) away from the high-pressure pipe (310) is fixedly connected to the upper surface of the interior of the recovery box (100).

6. A descalable waste heat recovery device according to claim 5, characterized in that: A drug adding port is provided on the outer surface of the drug adding member (340) on the outer surface of the high-pressure pipe (310), and the material of the high-pressure pipe (310) is a high-chromium alloy.

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