Waste heat utilization and recovery device

Abstract

The invention discloses a waste heat utilization and recovery device which comprises a first heat exchanger and a second heat exchanger, a first heat exchange pipe is connected with the second heat exchanger through a heat exchange connecting pipe, the first heat exchanger is connected with the first heat exchange pipe, and the second heat exchanger is connected with a second heat exchange pipe; a first circulating pump and a first one-way valve are arranged on the first heat exchange pipe, and a safety valve, an exhaust valve, a constant pressure tank, a pressure gauge, a second circulating pump and a second one-way valve are arranged on the heat exchange connecting pipe. The air compressor waste heat recovery system has the advantages of being reasonable in design, convenient to operate and control, high in waste heat utilization and recovery efficiency aiming at the air compressor and good in popularization prospect.

Description

Technical Field

[0001] This invention relates to the field of waste heat recovery technology, specifically to a waste heat utilization and recovery device. Background Technology

[0002] An air compressor is a device that compresses gas. When working, it converts electrical energy into compressed air needed for industrial production. The air compressor itself includes a local control cabinet, oil tank, lubrication system, main motor, three-stage compression device, gearbox, cooling system, and compressed gas outlet. During operation, the air compressor compresses air in three stages through the main motor to produce the compressed air required for industrial production.

[0003] However, during operation, only a small portion of the electrical energy from the air compressor is converted into the compressed air needed for industrial production; more than half is converted into excess heat. This heat is not utilized; some is dissipated into the surrounding air through the machine body, and some is cooled by the cooling system, resulting in a waste of resources. Summary of the Invention

[0004] The purpose of this invention is to solve the problems existing in the background art and to provide a waste heat recovery device.

[0005] To solve the above-mentioned technical problems, the technical solution provided by the present invention is: a waste heat recovery device, including a first heat exchanger and a second heat exchanger, wherein the first heat exchanger tube and the second heat exchanger are connected by a heat exchange connecting pipe, the first heat exchanger is connected to the first heat exchanger tube, and the second heat exchanger tube is connected to the second heat exchanger tube.

[0006] The first heat exchange tube is equipped with a first circulating pump and a first check valve, and the heat exchange connecting pipe is equipped with a safety valve, an exhaust valve, a pressure tank, a pressure gauge, a second circulating pump, and a second check valve.

[0007] The present invention has the following advantages: it is reasonably designed, easy to operate and control, and has high efficiency in the recovery of waste heat from air compressors, and has a good prospect for promotion. Attached Figure Description

[0008] Figure 1 This is a schematic diagram of the structure of a waste heat recovery device according to the present invention. Detailed Implementation

[0009] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0010] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0011] In the description of the embodiments of the present invention, if a feature is referred to as "setting," "fixing," "connecting," or "installing" on another feature, it can be directly set, fixed, or connected to the other feature, or it can be indirectly set, fixed, connected, or installed on the other feature. In the description of the embodiments of the present invention, if "several" is involved, it means one or more; if "multiple" is involved, it means two or more; if "greater than," "less than," or "exceeds," it should be understood as excluding the stated number; if "above," "below," or "within," it should be understood as including the stated number. If "first" or "second" is involved, it should be understood as used to distinguish technical features, and not as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0012] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be given below with reference to the accompanying drawings.

[0013] The accompanying drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0014] Example

[0015] Referring to the accompanying drawings, a waste heat recovery device includes a first heat exchanger 1 and a second heat exchanger 2. The first heat exchanger 1 and the second heat exchanger 2 are connected by a heat exchange connecting pipe 3. A first heat exchanger 4 is connected to the first heat exchanger 1, and a second heat exchanger 5 is connected to the second heat exchanger 2.

[0016] The first heat exchange tube 4 is equipped with a first circulation pump 6 and a first check valve 7, and the heat exchange connecting pipe 3 is equipped with a safety valve 8, an exhaust valve 9, a pressure tank 10, a pressure gauge 11, a second circulation pump 12, and a second check valve 13.

[0017] The working principle of this invention is as follows: The high-temperature oil from the air compressor exchanges water with the heat exchanger in the primary heat exchange stage. This system includes a pressure tank, a safety valve, and a water supply device. The secondary heat exchange involves water exchange with the heat exchanger. The secondary heat exchange stops when the secondary outlet water temperature reaches the set temperature, and starts otherwise.

[0018] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered within the scope of this specification. The above embodiments only illustrate several implementation methods of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A waste heat recovery device, characterized in that: It includes a first heat exchanger and a second heat exchanger. The first heat exchanger tube and the second heat exchanger are connected by a heat exchange connecting pipe. The first heat exchanger is connected to the first heat exchanger tube, and the second heat exchanger tube is connected to the second heat exchanger tube. The first heat exchange tube is equipped with a first circulating pump and a first check valve, and the heat exchange connecting pipe is equipped with a safety valve, an exhaust valve, a pressure tank, a pressure gauge, a second circulating pump, and a second check valve.

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