Anti-misconnection air compressor waste heat recovery connecting device

Abstract

An air compressor waste heat recovery connecting device capable of preventing misconnection comprises an air compressor body, an oil-gas separator, a water-cooling heat exchanger and an air-cooling heat exchanger, the water-cooling heat exchanger is provided with a water-cooling hot oil inlet pipe and a water-cooling hot oil return pipe, the air-cooling heat exchanger is provided with an air-cooling hot oil inlet pipe and an air-cooling hot oil return pipe, the air compressor waste heat recovery connecting device further comprises a four-way valve, and the four-way valve comprises a valve body. The valve body is provided with a first port, a second port, a third port and a fourth port, a valve element is arranged in a cavity of the valve body and can rotate relative to the valve body so that the first port can be communicated with the second port, the third port can be communicated with the fourth port, or the first port can be communicated with the fourth port, the second port can be communicated with the third port, and the first port is connected with a hot oil outlet of the oil-gas separator. The second port is connected with a water-cooling-hot-oil inlet pipe, the third port is connected with a water-cooling-hot-oil return pipe, and the fourth port is connected with an air-cooling-hot-oil inlet pipe. The oil-gas separator, the water-cooling heat exchanger and the air-cooling heat exchanger are connected through the four-way valve, operation is convenient, errors are not prone to occurring, pipelines are simple, occupied space is small, and heat is not wasted.

Description

Technical Field

[0001] The utility model relates to the technical field of air compressors, in particular to an air compressor waste heat recovery connection device which can prevent wrong connection. Background Art

[0002] The existing air compressor waste heat recovery connection device generally includes an air compressor body, an oil-gas separator, a water-cooled heat exchanger and an air-cooled heat exchanger. The air compressor body has a cold oil inlet and an oil-gas outlet. The oil-gas separator has an oil-gas inlet and a hot oil outlet. The oil-gas inlet is connected to the oil-gas outlet. The hot oil outlet is connected to the inlet of the water-cooled heat exchanger through a water-cooled hot oil inlet pipe. The outlet of the water-cooled heat exchanger is connected to the inlet of the air-cooled heat exchanger through a water-cooled hot oil outlet pipe. The outlet of the air-cooled heat exchanger is connected to the cold oil inlet through a cold oil return pipe. A transition pipe is also provided between the water-cooled hot oil inlet pipe and the water-cooled hot oil outlet pipe. Valves are provided on the ends of the water-cooled hot oil inlet pipe and the water-cooled hot oil outlet pipe close to the water-cooled heat exchanger and on the transition pipe. When waste heat recovery is required, the valve on the transition pipe needs to be closed, and the valves on the water-cooled hot oil inlet pipe and the water-cooled hot oil outlet pipe need to be opened at the same time. The hot oil coming out of the hot oil outlet of the oil-gas separator passes through the water-cooled hot oil inlet pipe to enter the water-cooled heat exchanger for heat exchange, realizing waste heat recovery. The oil after heat exchange passes through the water-cooled hot oil outlet pipe, the air-cooled heat exchanger and the cold oil return pipe and enters the air compressor body from the cold oil inlet again. At this time, the air-cooled heat exchanger does not work. When waste heat recovery is not required, the valve on the transition pipe needs to be opened, and the valves on the water-cooled hot oil inlet pipe and the water-cooled hot oil outlet pipe need to be opened at the same time. The hot oil coming out of the hot oil outlet of the oil-gas separator passes through the water-cooled hot oil inlet pipe, the transition pipe, and the water-cooled hot oil outlet pipe and enters the air-cooled heat exchanger. The air-cooled heat exchanger works to cool the hot oil. The cooled oil passes through the cold oil return pipe and enters the air compressor body from the cold oil inlet again. The disadvantages of this type of air compressor waste heat recovery connection device are that it has many pipes and valves, occupies a lot of space, and requires shutdown for operation, which is complicated to operate and prone to misconnection. Summary of the invention

[0003] The purpose of the utility model is to provide an air compressor waste heat recovery connection device that prevents misconnection, which can solve the technical problems mentioned in the background technology.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the utility model is as follows: an air compressor waste heat recovery connection device with anti-misconnection, comprising an air compressor body, an oil-gas separator, a water-cooled heat exchanger and an air-cooled heat exchanger, the air compressor body having a cold oil inlet and an oil-gas outlet, the oil-gas separator having an oil-gas inlet and a hot oil outlet, the oil-gas inlet connected to the oil-gas outlet, the water-cooled heat exchanger having a water-cooled hot oil inlet pipe and a water-cooled hot oil return pipe, the air-cooled heat exchanger having an air-cooled hot oil inlet pipe and an air-cooled hot oil return pipe, the air-cooled hot oil return pipe connected to the cold oil inlet, and also comprising a four-way valve, the four-way valve comprising a valve body, the A cavity is provided in the valve body, and the valve body is provided with a first port, a second port, a third port and a fourth port which are arranged in sequence along the axial direction of the valve body and connected to the cavity. A valve core is provided in the cavity, and the valve core can rotate relative to the valve body to make the first port communicate with the second port, the third port communicate with the fourth port, or make the first port communicate with the fourth port, the second port communicate with the third port. The first port is connected to the hot oil outlet, the second port is connected to the water-cooled hot oil inlet pipe, the third port is connected to the water-cooled hot oil return pipe, and the fourth port is connected to the air-cooled hot oil inlet pipe.

[0005] Preferably, an operating portion is provided on the valve body, an operating groove is recessed on the operating portion, an operating rod connected to the valve core is provided in the operating groove, and an outer wall of the operating rod is polygonal.

[0006] Preferably, the water-cooled heat exchanger comprises a hot oil pipeline and a water-cooling pipeline, and the hot oil pipeline and the water-cooling pipeline are overlapped and spirally arranged in the water-cooled heat exchanger, and the hot oil pipeline and the water-cooling pipeline are made of high thermal conductivity metal, and the two ends of the hot oil pipeline are respectively connected to the water-cooled hot oil inlet pipe and the water-cooled hot oil return pipe, and the two ends of the water-cooling pipeline are respectively connected to a water inlet pipe and a water outlet pipe.

[0007] Preferably, the air-cooled heat exchanger comprises an air-cooling pipeline and a fan. The air-cooling pipeline is spirally arranged in the air-cooled heat exchanger and is made of high thermal conductivity metal. The two ends of the air-cooling pipeline are respectively connected to the air-cooled hot oil inlet pipe and the air-cooled hot oil return pipe.

[0008] Compared with the prior art, the beneficial effect of the utility model is that the utility model connects the oil-gas separator, the water-cooled heat exchanger and the air-cooled heat exchanger through a four-way valve, which is not only easy to operate and not prone to errors, but also has simple pipelines, occupies less space, and does not cause heat waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a stereogram of the utility model.

[0010] Figure 2 It is a three-dimensional diagram of the four-way valve of the utility model.

[0011] Figure 3 It is a cross-sectional view of a state of the four-way valve of the utility model.

[0012] Figure 4 It is a cross-sectional view of another state of the four-way valve of the utility model. Implementation

[0013] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0014] like Figure 1-Figure 4 As shown, the utility model provides an air compressor waste heat recovery connection device with anti-misconnection, including an air compressor body 1, an oil-gas separator 2, a water-cooled heat exchanger 3 and an air-cooled heat exchanger 4, the air compressor body 1 has a cold oil inlet and an oil-gas outlet, the oil-gas separator 2 has an oil-gas inlet and a hot oil outlet, the oil-gas inlet is connected to the oil-gas outlet, the water-cooled heat exchanger 3 has a water-cooled hot oil inlet pipe 5 and a water-cooled hot oil return pipe 6, the air-cooled heat exchanger 4 has an air-cooled hot oil inlet pipe 7 and an air-cooled hot oil return pipe 8, the air-cooled hot oil return pipe 8 is connected to the cold oil inlet, and also includes a four-way valve, the four-way valve includes a valve body 9, the valve body 9 has a cavity, and the valve body 9 is provided with a The valve body 9 is axially provided with a first port 10, a second port 11, a third port 12 and a fourth port 13 connected to the cavity in sequence, and a valve core 14 is provided in the cavity. The valve core 14 can rotate relative to the valve body 9 to make the first port 10 communicate with the second port 11, and the third port 12 communicate with the fourth port 13, or make the first port 10 communicate with the fourth port 13, and the second port 11 communicate with the third port 12. The first port 10 is connected to the hot oil outlet, the second port 11 is connected to the water-cooled hot oil inlet pipe 5, the third port 12 is connected to the water-cooled hot oil return pipe 6, and the fourth port 13 is connected to the air-cooled hot oil inlet pipe 7.

[0015] When the utility model is in use, the oil-gas mixture from the air compressor body 1 enters the oil-gas separator 2 through the oil-gas outlet and the oil-gas inlet, and the oil-gas separator 2 separates the oil-gas mixture into hot oil and hot gas. When the heat of the hot oil needs to be recycled, the valve core 14 of the four-way valve is rotated to connect the first port 10 with the second port 11, and the third port 12 with the fourth port 13. Then the hot oil enters the water-cooled heat exchanger 3 from the hot oil outlet, the first port 10, the second port 11, and the water-cooled hot oil inlet pipe 5 for heat exchange, realizing waste heat recovery. The oil after heat exchange and cooling enters the air-cooled heat exchanger 4 through the water-cooled hot oil return pipe 6, the third port 12, the fourth port 13, and the air-cooled hot oil inlet pipe 7. At this time, the air-cooled heat exchanger 4 generally does not need to work, and then the oil enters the air compressor body 1 again from the air-cooled hot oil return pipe 8 and the cold oil inlet. When the heat of the hot oil does not need to be recycled, the valve core 14 of the four-way valve is rotated again to connect the first port 10 with the fourth port 13, and the second port 11 with the third port 12, and then the hot oil enters the air-cooled heat exchanger 4 from the hot oil outlet, the first port 10, the fourth port 13, and the air-cooled hot oil inlet pipe 7, and the hot oil does not enter the water-cooled heat exchanger 3, and then the air-cooled heat exchanger 4 works to cool the hot oil, and the cooled oil passes through the air-cooled hot oil return pipe 8 and enters the air compressor body 1 again from the cold oil inlet. The utility model connects the oil-gas separator 2, the water-cooled heat exchanger 3 and the air-cooled heat exchanger 4 through the four-way valve, which is not only easy to operate and not prone to error, but also has simple pipelines, occupies less space, and does not cause heat waste.

[0016] Preferably, an operating portion 15 is provided outside the valve body 9, and an operating groove 16 is recessed on the operating portion 15. An operating rod 17 connected to the valve core 14 is provided in the operating groove 16. The outer wall of the operating rod 17 is polygonal. The operating rod 17 is located in the operating groove 16 and needs to be operated with the aid of special tools to avoid misoperation caused by accidental touching.

[0017] Preferably, the water-cooled heat exchanger 3 comprises a hot oil pipeline and a water-cooling pipeline, and the hot oil pipeline and the water-cooling pipeline are overlapped and spirally arranged in the water-cooled heat exchanger 3, and the hot oil pipeline and the water-cooling pipeline are made of high thermal conductivity metal, and the two ends of the hot oil pipeline are respectively connected to the water-cooled hot oil inlet pipe 5 and the water-cooled hot oil return pipe 6, and the two ends of the water-cooling pipeline are respectively connected to the water inlet pipe 18 and the water outlet pipe 19, and the external water enters the water-cooled heat exchanger 3 from the water inlet pipe 18, and heat is exchanged with the hot oil pipeline through the water-cooling pipeline. After the cold water becomes hot water, it is discharged from the water outlet pipe 19 to the external system requiring heat.

[0018] Preferably, the air-cooled heat exchanger 4 has an air-cooling pipeline and a fan. The air-cooling pipeline is spirally arranged in the air-cooled heat exchanger and is made of high thermal conductivity metal. The two ends of the air-cooling pipeline are respectively connected to the air-cooled hot oil inlet pipe 7 and the air-cooled hot oil return pipe 8, and the fan is used to cool the hot oil.

[0019] Although the implementation scheme of the utility model has been disclosed as above, it is not limited to the applications listed in the specification and the implementation scheme. It can be fully applied to various fields suitable for the utility model. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An anti-misconnection air compressor waste heat recovery connection device, comprising an air compressor body, an oil-gas separator, a water-cooled heat exchanger and an air-cooled heat exchanger, the air compressor body having a cold oil inlet and an oil-gas outlet, the oil-gas separator having an oil-gas inlet and a hot oil outlet, the oil-gas inlet connected to the oil-gas outlet, the water-cooled heat exchanger having a water-cooled hot oil inlet pipe and a water-cooled hot oil return pipe, the air-cooled heat exchanger having an air-cooled hot oil inlet pipe and an air-cooled hot oil return pipe, the air-cooled hot oil return pipe connected to the cold oil inlet, characterized in that: It also includes a four-way valve, which includes a valve body, a cavity therein, and a first port, a second port, a third port and a fourth port are arranged in sequence along the axial direction of the valve body and connected to the cavity on the valve body, a valve core is provided in the cavity, and the valve core can rotate relative to the valve body to make the first port communicate with the second port, the third port communicate with the fourth port, or the first port communicate with the fourth port, the second port communicate with the third port, the first port is connected to the hot oil outlet, the second port is connected to the water-cooled hot oil inlet pipe, the third port is connected to the water-cooled hot oil return pipe, and the fourth port is connected to the air-cooled hot oil inlet pipe.

2. The anti-misconnection air compressor waste heat recovery connection device according to claim 1, characterized in that: An operating portion is arranged outside the valve body, an operating groove is recessed on the operating portion, an operating rod connected to the valve core is arranged in the operating groove, and an outer wall of the operating rod is polygonal.

3. The anti-misconnection air compressor waste heat recovery connection device according to claim 1 or 2, characterized in that: The water-cooled heat exchanger comprises a hot oil pipeline and a water-cooling pipeline, which are overlapped and spirally arranged in the water-cooled heat exchanger. The hot oil pipeline and the water-cooling pipeline are made of high thermal conductivity metal. The two ends of the hot oil pipeline are respectively connected to the water-cooled hot oil inlet pipe and the water-cooled hot oil return pipe, and the two ends of the water-cooling pipeline are respectively connected to a water inlet pipe and a water outlet pipe.

4. The anti-misconnection air compressor waste heat recovery connection device according to claim 1 or 2, characterized in that: The air-cooled heat exchanger has an air-cooled pipeline and a fan. The air-cooled pipeline is spirally arranged in the air-cooled heat exchanger and is made of high thermal conductivity metal. Both ends of the air-cooled pipeline are respectively connected to the air-cooled hot oil inlet pipe and the air-cooled hot oil return pipe.

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