Composite directly-heated heat exchange device suitable for air compressor oil waste heat recovery

Abstract

The utility model relates to the technical field of waste heat recovery, in particular to a composite directly-heated type heat exchange device suitable for air compressor oil waste heat recovery, which comprises a barrel, an upper sealing cover and a lower sealing cover, and the upper sealing cover and the lower sealing cover are positioned on two sides of the top and the bottom of the barrel. A lower baffle ring is fixedly connected to the top of the lower sealing cover and located in each upper baffle ring, and a heat transfer blocking sleeve is fixedly connected to the position, located between the upper baffle rings and the lower baffle rings, in the barrel; through the upper baffle ring, the heat transfer blocking sleeve and the lower baffle ring which are connected in an assembled mode, the contact flowing time of high-temperature air compressor oil and a heat exchange medium can be prolonged, the waste heat recovery efficiency is improved, and the interior of the device can be conveniently cleaned; and in combination with a flowing path of the high-temperature air compressor oil from inside to outside and the heat exchange medium from outside to inside, the heat exchange medium is subjected to whole-course temperature rise type heat exchange treatment, and efficient heat exchange treatment is further achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of waste heat recovery, especially to the composite direct heating type heat exchange device suitable for air compressor oil waste heat recovery. BACKGROUND

[0002] In the operation process of the air compressor, its oil will inevitably absorb a large amount of compression heat, and then be converted into high-temperature oil. In order to effectively utilize this part of heat energy, the high-temperature oil is usually introduced into the composite direct heating type heat exchange device through the pipeline, and exchanges heat with the circulating water or other heat exchange medium, so as to transfer the heat to the heat exchange medium. The heat exchange medium with increased temperature can be used for heating, hot water supply and other scenes, and the cooled oil returns to the air compressor to continue participating in the compression process.

[0003] For example, the high-efficiency waste heat recovery system of the air compressor disclosed in the prior art with the publication number CN108088281A injects high-temperature air compressor oil into the waste heat recovery tank, and then uses the water pipe connected by multiple spherical pipes to improve the contact effect of the heat exchange medium and the high-temperature air compressor oil. Although this can enhance the heat exchange effect, the high-temperature air compressor oil flows irregularly in the tank, which makes it difficult for part of the air compressor oil to contact and exchange heat with the water pipe for a long time, so that it is discharged from the tank in a short time, thereby making it difficult to further achieve efficient heat exchange effect.

[0004] In view of the above technical defects, a solution is proposed. UTILITY MODEL CONTENT

[0005] The utility model aims at providing the composite direct heating type heat exchange device suitable for air compressor oil waste heat recovery, which solves the above technical defects. The utility model first uses the upper retaining ring, the heat transfer barrier sleeve and the lower retaining ring connected by assembly, which not only prolongs the contact flow time of the high-temperature air compressor oil and the heat exchange medium, improves the waste heat recovery efficiency, but also facilitates the cleaning of the inside of the device. Then, combined with the flow path of the high-temperature air compressor oil from inside to outside and the heat exchange medium from outside to inside, the heat exchange medium is subjected to full-range temperature rising heat exchange treatment, and further efficient heat exchange treatment is achieved.

[0006] The following technical solutions are used:

[0007] A composite direct-heating heat exchange device suitable for waste heat recovery of air compressor oil includes a cylinder, and an upper cover and a lower cover located on the top and bottom sides of the cylinder. The bottom of the upper cover is fixedly connected to multiple coaxially arranged upper retaining rings, and the top of the lower cover is fixedly connected to lower retaining rings inside each upper retaining ring. A heat transfer barrier sleeve is fixedly connected inside the cylinder between the upper and lower retaining rings, and multiple heat transfer blocks are provided on the heat transfer barrier sleeve. A second liquid inlet pipe is installed on the upper cover, and a first liquid inlet pipe and a second liquid outlet pipe are installed on the lower cover. A first liquid outlet pipe is installed on the top of one side of the cylinder.

[0008] Preferably, the top of the lower cover is fixedly installed with multiple connecting posts, and the upper cover is installed with a screw rod that is threadedly connected to the corresponding connecting post. Both the upper cover and the lower cover are provided with mounting grooves that are adapted to the cylinder.

[0009] Preferably, the first liquid inlet pipe is connected to the inner lower baffle ring, and the first liquid outlet pipe is located below the connection between the cylinder and the heat transfer barrier sleeve.

[0010] Preferably, the bottom of the heat transfer barrier sleeve is provided with a through groove through which the second liquid supply pipe passes, and a limiting ring that abuts against the heat transfer barrier sleeve is fixedly connected to the second liquid supply pipe. The top of the heat transfer barrier sleeve is fixedly connected with a plurality of limiting posts that abut against the upper cover, and the second liquid supply pipe is located outside the outer upper retaining ring.

[0011] Preferably, sealing gaskets are installed inside the mounting groove and on the limiting ring.

[0012] Preferably, a docking block is fixedly connected to the connecting column, and a docking seat that engages with the corresponding docking block is fixedly connected to the cylinder.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention firstly, through the combined action of the upper baffle ring, the heat transfer barrier sleeve, and the lower baffle ring, maximizes the flow time of the high-temperature air compressor oil and the heat exchange medium within the cylinder, thereby improving the efficiency of direct-heating waste heat recovery of the high-temperature air compressor oil. Secondly, by combining the flow path of the high-temperature air compressor oil from the inside out with the flow path of the heat exchange medium from the outside in, it achieves full-process heating heat exchange treatment for the heat exchange medium, avoiding the problem of the heat exchange medium cooling down before exiting the cylinder and affecting the heat exchange effect. Furthermore, by disassembling the cylinder and the cover, the upper baffle ring, the heat transfer barrier sleeve, and the lower baffle ring can be separated, facilitating cleaning of the inside of the device and ensuring high heat exchange efficiency. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings;

[0016] Figure 1 This is a schematic diagram of the structure of this utility model.Figure 1 ;

[0017] Figure 2 is the structure diagram of the cylinder of the utility model Figure 2 ;

[0018] Figure 3 is the structure diagram of the cylinder of the utility model Figure 1 ;

[0019] Figure 4 is the structure diagram of the cylinder of the utility model Figure 2 ;

[0020] Figure 5 is the structure diagram of the upper cover of the utility model

[0021] Figure 6 is the structure diagram of the lower cover of the utility model

[0022] Figure 7 is the flow path diagram of the high-temperature air compressor oil and heat exchange medium of the utility model.

[0023] Legend:

[0024] 1, cylinder; 11, heat transfer barrier sleeve; 12, heat transfer block; 13, liquid outlet pipe one;

[0025] 2, upper cover; 21, upper retaining ring; 22, liquid inlet pipe two; 23, screw rod;

[0026] 3, lower cover; 31, lower retaining ring; 32, liquid inlet pipe one; 33, liquid outlet pipe two; 34, connecting column. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Embodiment one: please refer to Figure 1 - Figure 7 As shown in the figure, in order to solve the problem that in the prior art, due to the irregular direction flow of the high-temperature air compressor oil in the box, part of the air compressor oil is difficult to contact the water pipe for a long time, resulting in being discharged from the box in a short time and reducing the heat exchange effect, the following scheme can be used to solve the problem.

[0029] The composite direct heating heat exchange device suitable for air compressor oil waste heat recovery in the embodiment comprises a cylinder body 1, upper and lower covers 2 and 3 located at the top and bottom of the cylinder body 1, the upper and lower covers 2 and 3 are arranged to realize the sealing of the cylinder body 1, the bottom of the upper cover 2 is fixedly connected with a plurality of upper retaining rings 21 arranged on the same axis, the top of the lower cover 3 is fixedly connected with a lower retaining ring 31 inside each upper retaining ring 21, and a heat transfer barrier sleeve 11 is fixedly connected between the upper retaining ring 21 and the lower retaining ring 31 inside the cylinder body 1.

[0030] The plurality of upper retaining rings 21 and lower retaining rings 31 in combination with the heat transfer barrier sleeve 11 are arranged to make the heat exchange medium and the air compressor oil flow in a snake form in the cylinder body 1, thereby prolonging the flow time of the high-temperature air compressor oil and the heat exchange medium in the cylinder body 1 to the greatest extent, so as to improve the direct heating waste heat recovery efficiency of the high-temperature air compressor oil.

[0031] The heat transfer barrier sleeve 11 is provided with a plurality of heat transfer blocks 12 for further accelerating the heat energy transfer effect between the heat exchange medium and the air compressor oil on both sides of the heat transfer barrier sleeve 11, thereby improving the heat exchange effect, the upper cover 2 is provided with a liquid inlet pipe 22, the lower cover 3 is provided with a liquid inlet pipe 32 and a liquid outlet pipe 33, and the top of one side of the cylinder body 1 is provided with a liquid outlet pipe 13.

[0032] A plurality of connecting columns 34 are fixedly installed on the top of the lower cover 3, a screw rod 23 is installed on the upper cover 2 and is screwed with the corresponding connecting column 34, a through hole is formed in the upper cover 2 for the screw rod 23 to pass through, and the connecting column 34 and the screw rod 23 are arranged to realize the detachable installation of the cylinder body 1, the upper cover 2 and the lower cover 3, the upper retaining ring 21, the heat transfer barrier sleeve 11 and the lower retaining ring 31 are separated by detaching the cylinder body 1, the upper cover 2 and the lower cover 3, so as to facilitate the cleaning of the inside of the device, thereby ensuring the efficient heat exchange efficiency.

[0033] The upper cover 2 and the lower cover 3 are both provided with installation grooves matched with the cylinder body 1, which are used to realize the positioning installation of the cylinder body 1 between the upper cover 2 and the lower cover 3, and ensure the smooth flow path between the heat transfer barrier sleeve 11 and the upper retaining ring 21, and between the heat transfer barrier sleeve 11 and the lower retaining ring 31.

[0034] The liquid inlet pipe 32 communicates with the inner lower retaining ring 31, and the liquid outlet pipe 13 is located below the connection between the cylinder body 1 and the heat transfer barrier sleeve 11, and the positions of the liquid inlet pipe 32 and the liquid outlet pipe 13 are arranged to realize the flow effect of the high-temperature air compressor oil from the inside to the outside, thereby prolonging the flow time to improve the heat exchange effect.

[0035] The bottom of the heat transfer barrier sleeve 11 is provided with a through groove for the liquid outlet pipe two 33 to pass through, which is used for discharging the heat exchange medium above the heat transfer barrier sleeve 11, and the liquid outlet pipe two 33 is fixedly connected with a limiting ring which is in contact with the heat transfer barrier sleeve 11, and the top of the heat transfer barrier sleeve 11 is fixedly connected with a plurality of limiting columns which are in contact with the upper cover 2, and the limiting ring and the limiting column are matched, which is used for the stability of the heat transfer barrier sleeve 11 in the cylinder body 1, and is also used for ensuring the connection effect between the heat transfer barrier sleeve 11 and the liquid outlet pipe two 33, and the liquid inlet pipe two 22 is located outside the outer blocking ring 21;

[0036] The liquid inlet pipe two 22 is used for the injection of the heat exchange medium from the outside of the cylinder body 1, and the liquid outlet pipe two 33 is located in the middle of the cylinder body 1, so that the heat exchange medium flows from outside to inside, and the high-temperature air compressor oil flows from inside to outside, so that the initial air compressor oil containing a large amount of heat in the cylinder body 1 re-heats the heat exchange medium to be discharged later, the later air compressor oil containing a small amount of heat pre-heats the initial low-temperature heat exchange medium when being discharged, and the heat exchange medium and the air compressor oil flow to perform whole-process temperature-raising heat exchange treatment, thereby achieving high-efficiency heat exchange effect.

[0037] The sealing pads are arranged in the installation grooves and on the limiting ring, the sealing pads in the installation grooves are used for increasing the connection sealing property between the cylinder body 1 and the upper cover 2 and the lower cover 3, so as to avoid the leakage of the high-temperature air compressor oil and the heat exchange medium, and the sealing pad on the limiting ring is used for increasing the sealing property between the liquid outlet pipe two 33 and the heat transfer barrier sleeve 11, so as to avoid the mixing of the high-temperature air compressor oil and the heat exchange medium.

[0038] The connecting column 34 is fixedly connected with a butt joint block, the cylinder body 1 is fixedly connected with a butt joint seat which is clamped with the corresponding butt joint block, when the upper cover 2 and the lower cover 3 are tightly connected, the butt joint block and the corresponding butt joint seat are clamped, the preliminary connection between the cylinder body 1 and the lower cover 3 is realized, so as to realize the fixed connection between the upper cover 2, the cylinder body 1 and the lower cover 3.

[0039] The working process and principle of the utility model are as follows:

[0040] In use, high-temperature air compressor oil is injected into the cylinder 1 through inlet pipe 32. Combined with multiple concentrically arranged lower baffle rings 31 and heat transfer barrier sleeve 11, the high-temperature air compressor oil flows in a serpentine pattern from the inside to the outside in the cylinder 1 below the heat transfer barrier sleeve 11. Then, it is discharged through outlet pipe 13 and flows back into the air compressor. The heat exchange medium is injected into the cylinder 1 through inlet pipe 22. Combined with multiple concentrically arranged upper baffle rings 21 and heat transfer barrier sleeve 11, the heat exchange medium flows in a serpentine pattern from the outside to the inside in the cylinder 1 above the heat transfer barrier sleeve 11. Then, it is discharged through outlet pipe 33 for waste heat recovery. During the flow of the heat exchange medium and the high-temperature air compressor oil, the heat exchange efficiency between the heat exchange medium and the air compressor oil is accelerated by the combination of several heat transfer blocks 12 on the heat transfer barrier sleeve 11.

[0041] Through the flow of the heat exchange medium from the outside to the inside and the flow of the high-temperature air compressor oil from the inside to the outside, the initial air compressor oil containing a large amount of heat energy in the cylinder 1 heats the heat exchange medium that is about to be discharged later through a second heat exchange process. Meanwhile, the later air compressor oil containing a small amount of heat preheats the initial low-temperature heat exchange medium when it is discharged. Through the flow of the heat exchange medium and the air compressor oil, a full-process heating heat exchange process is carried out, thereby achieving a highly efficient heat exchange effect.

[0042] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A composite direct-heating heat exchange device suitable for waste heat recovery of air compressor oil, comprising a cylinder (1), and an upper cover (2) and a lower cover (3) located on the top and bottom sides of the cylinder (1), characterized in that, The bottom of the upper cover (2) is fixedly connected with multiple coaxially arranged upper baffle rings (21). The top of the lower cover (3) is fixedly connected with lower baffle rings (31) inside each upper baffle ring (21). The inside of the cylinder (1) is fixedly connected between the upper baffle rings (21) and the lower baffle rings (31). Multiple heat transfer blocks (12) are provided on the heat transfer baffle rings (11). The upper cover (2) is equipped with a second liquid inlet pipe (22). The lower cover (3) is equipped with a first liquid inlet pipe (32) and a second liquid outlet pipe (33). The top of one side of the cylinder (1) is equipped with a first liquid outlet pipe (13).

2. The composite direct-heating heat exchange device for waste heat recovery of air compressor oil according to claim 1, characterized in that, The top of the lower cover (3) is fixedly installed with multiple connecting posts (34), and the upper cover (2) is installed with a screw (23) that is threadedly connected to the corresponding connecting post (34). Both the upper cover (2) and the lower cover (3) are provided with mounting grooves that are compatible with the cylinder (1).

3. The composite direct-heating heat exchange device for waste heat recovery of air compressor oil according to claim 1, characterized in that, The inlet pipe (32) is connected to the inner lower baffle ring (31), and the outlet pipe (13) is located below the connection between the cylinder (1) and the heat transfer barrier sleeve (11).

4. The composite direct-heating heat exchange device for waste heat recovery of air compressor oil according to claim 2, characterized in that, The bottom of the heat transfer barrier sleeve (11) is provided with a through groove through which the liquid outlet pipe 2 (33) passes, and a limiting ring that abuts against the heat transfer barrier sleeve (11) is fixedly connected to the liquid outlet pipe 2 (33). The top of the heat transfer barrier sleeve (11) is fixedly connected with multiple limiting posts that abut against the upper cover (2). The liquid inlet pipe 2 (22) is located outside the outer upper retaining ring (21).

5. The composite direct-heating heat exchange device for waste heat recovery of air compressor oil according to claim 4, characterized in that, Both the inside of the mounting groove and the limiting ring are fitted with sealing gaskets.

6. The composite direct-heating heat exchange device for waste heat recovery of air compressor oil according to claim 2, characterized in that, A docking block is fixedly connected to the connecting column (34), and a docking seat that engages with the corresponding docking block is fixedly connected to the cylinder (1).

Images