CN218118211U

CN218118211U - Extruder hydraulic oil refrigerating system with post air conditioner

Info

Publication number: CN218118211U
Application number: CN202222625020.0U
Authority: CN
Inventors: 陈光金; 金松青; 陈小玲; 敖剑锋; 杨文蒙; 马瑞兰
Original assignee: Zhejiang Kingfit Environment Co ltd
Current assignee: Zhejiang Kingfit Environment Co ltd
Priority date: 2022-09-30
Filing date: 2022-09-30
Publication date: 2022-12-23
Anticipated expiration: 2032-09-30

Abstract

The utility model relates to a refrigeration plant field especially relates to a take post air conditioner's extruder hydraulic oil refrigerating system. The air conditioner cooling system in the hydraulic oil refrigerating system of the extruder comprises a cooling loop, and a compressor, a condenser, an air conditioner heat exchanger, an air conditioner expansion valve and an oil cooling expansion valve which are connected to the cooling loop. The hydraulic oil refrigerating system of the extruder has the advantages that on one hand, the cooling equipment with small volume and automatic constant temperature of oil temperature is provided, the occupied area of the cooling equipment is reduced, the energy consumption during oil cooling is reduced, and the problems that the temperature of hydraulic oil is uncontrollable due to natural cooling temperature reduction, the oil temperature in summer is too high, and the oil temperature in winter is too low can be solved; on the other hand, cool air can be conveyed to a post, post air conditioning is provided for workshop workers, and the working environment of the workers is improved.

Description

Extruder hydraulic oil refrigerating system with post air conditioner

Technical Field

The utility model relates to a refrigeration plant field especially relates to a take post air conditioner's extruder hydraulic oil refrigerating system.

Background

The hydraulic oil temperature of the hydraulic system of the aluminum profile extruder is not more than 45 ℃. When the temperature of the hydraulic system exceeds 45 ℃, the hydraulic pressure of a hydraulic oil piston is insufficient, the efficiency is reduced, and the temperature of the general hydraulic oil is controlled within 40 ℃. At present, a cooling tower is mainly adopted to cool a hydraulic system of the extruding machine.

One of the solutions is to use an outdoor cooling tower, and refer to the solution described in the prior patent with publication number "CN 204856082U". The cooling water of the cooling tower is pumped into the plate type heat exchanger for oil cooling through the water pump, hydraulic oil is pumped into the plate type heat exchanger by the oil pump on the other side to exchange heat with the cooling water, and therefore the effect of cooling the hydraulic oil is achieved, the water temperature of the cooling tower can rise to 40 ℃ when the cooling tower is at a high temperature in summer, the oil temperature of the hydraulic oil is difficult to control within 45 ℃, and the oil temperature can not be controlled below 40 ℃. In addition, a high-power cooling tower, a high-power water pump and a high-power oil pump are generally adopted for cooling, so that the defect that the cooling tower is difficult to cool naturally is overcome. In addition, the open circulation enables the plate heat exchanger cooled by oil to be easily dirty and blocked and to be frequently cleaned; and long-distance pipeline installation and cooling tower foundation construction are required.

In another scheme, a closed cooling tower is adopted for oil cooling, and reference can be made to the scheme described in the prior patent with the publication number of CN 110404993A. The closed cooling tower needs to be installed in a workshop, hydraulic oil is pumped into the closed cooling tower by the oil pump, and the closed cooling tower is cooled by the aid of the water-feeding fan and water evaporation air suction. In the extrusion workshop, the extruder is heated and then extruded and formed, the workshop is very hot and high in temperature, and the closed cooling tower is used for evaporating large water vapor in the workshop, so that the workshop becomes a high-temperature and high-humidity environment. In order to meet the requirement of cooling as far as possible, a high-power water pump and a high-power fan are needed for actual cooling, and the high-temperature and high-humidity workshop environment caused by the indoor installed closed cooling tower is not friendly to equipment, processes and operators. And also causes difficulty for enterprise operators to attract, reserve and use. And a certain water floating rate can be achieved in both closed cooling towers and open cooling towers. Can cause water to float to workshops and equipment, and causes certain environmental protection risks.

The two modes are that a fan and water are adopted for natural cooling, the influence of the environmental temperature is bound to be received, the oil temperature can not be reduced in summer, the equipment is affected by the scenery sound, and meanwhile, a high-power water pump, an oil pump and the fan are adopted for cooling so as to meet the requirement of cooling as far as possible. According to the actual survey and statistics of the company, the actual equipment installation cost and the actual operation cost after analysis are not low. The actual heat exchange quantity is 30kw, the power consumption of a refrigeration station is 7.5kw, the power consumption of an open cooling tower is about 15kw, and the power consumption of a closed cooling tower is about 11kw, taking a 1000T aluminum profile extruder as an example.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide an extruder hydraulic oil refrigerating system with a post air conditioner, which provides a small-volume cooling device with automatic constant temperature of oil temperature on one hand, reduces the occupied area of the cooling device, reduces the energy consumption during oil cooling, and can solve the problems that the temperature of the hydraulic oil is uncontrollable due to the fact that the oil temperature is lowered by natural cooling, the oil temperature is too high in summer and the oil temperature is too low in winter; on the other hand, cool air can be conveyed to a post, post air conditioning is provided for workshop workers, and the working environment of the workers is improved.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a hydraulic oil refrigerating system of an extruder with a post air conditioner comprises an oil-cooled heat exchanger internally provided with a first heat exchange tube and a second heat exchange tube, and an air conditioner cooling system; a first heat exchange tube of the oil-cooled heat exchanger is connected with a hydraulic system of the extruder, and a second heat exchange tube of the oil-cooled heat exchanger is connected with an air-conditioning cooling system; the air conditioner cooling system comprises a cooling loop which is arranged in a circulating mode, and a compressor, a condenser, an oil-cooled expansion valve and an air conditioner heat exchanger which are sequentially connected to the cooling loop; the second heat exchange tube of the oil-cooled heat exchanger is connected on a cooling loop between the oil-cooled expansion valve and the air-conditioning heat exchanger, and the extruding machine oil in the first heat exchange tube in the oil-cooled heat exchanger exchanges heat with the refrigerant in the second heat exchange tube; the air conditioner heat exchanger also comprises an air supply pipe for conveying cold air after heat exchange with the heat exchange core body on the inner side of the air conditioner heat exchanger to a post.

The above technical scheme is adopted in the utility model, this technical scheme relates to a take extruder hydraulic oil refrigerating system of post air conditioner, and the air conditioner cooling system among this extruder hydraulic oil refrigerating system includes cooling circuit to and connect compressor, condenser, air conditioner heat exchanger, air conditioner expansion valve and the oil cooling expansion valve on cooling circuit.

When the equipment runs, refrigerant gas is compressed by the compressor to form stroke liquid, then enters the condenser and is cooled through air cooling; the cooled refrigerant directly enters an oil-cooled expansion valve and is controlled to 5-10 ℃ to enter an oil-cooled heat exchanger for heat exchange, the temperature of the refrigerant is increased by 5-10 ℃ after the heat exchange of the oil-cooled heat exchanger, the refrigerant enters an air-conditioning heat exchanger in a 10-20 ℃ gaseous state, the heat exchange is carried out through a 1P air-conditioning heat exchanger, the residual heat at 20-25 ℃ flows back to a refrigeration compressor in a gaseous state to become a source for the re-operation of the refrigeration compressor, and the refrigerant enters the next cycle.

Based on the scheme, the invention adopts the air-conditioning cooling system to cool the oil-cooled heat exchanger, and replaces the cooling tower mode in the traditional scheme. The cooling equipment with small volume and automatic constant temperature of oil temperature is provided for the extruder, the occupied area of the cooling equipment is reduced, the energy consumption during oil cooling is reduced, and the problems that the temperature of hydraulic oil is uncontrollable due to the fact that the oil temperature is lowered by means of natural cooling, the oil temperature in summer is too high, and the oil temperature in winter is too low can be solved.

Furthermore, in the scheme, the refrigerant enters the air conditioner heat exchanger in a gaseous state at 10-20 ℃, and at the moment, cold air after heat exchange with the heat exchange core body on the inner side of the refrigerant is conveyed to a post through the blast pipe, the temperature of the air supplied by a general post is 20-25 ℃, so that the post air conditioner is provided for workshop workers, and the working environment of the operation workers is improved.

The scheme subverts the knowledge of adopting compression refrigeration to consume electricity through investigation and analysis.

Preferably, the condenser is a fin condenser, and an axial flow fan is arranged beside the fin condenser. In the scheme, the condenser is cooled in an air cooling mode, the fins are used for increasing the heat dissipation area of the condenser, and the axial flow fan is used for increasing airflow around the fin condenser.

Preferably, the hydraulic system of the extruder at least comprises a hydraulic oil tank, an oil pipeline connected with the hydraulic oil tank, an oil pump and an oil circulation filter arranged on the oil pipeline; and a first heat exchange tube of the oil-cooled heat exchanger is connected in the oil passage.

Preferably, the air conditioner further comprises a shell, and the compressor, the condenser, the air conditioner heat exchanger, the air conditioner expansion valve, the oil cooling expansion valve, the oil pump and the oil cooling heat exchanger are all installed inside the shell to form an oil cooling unit. The scheme integrates the plate heat exchanger cooled by the extruding machine and having large area and high cost into the oil cooling unit, and adopts the plate heat exchanger with small volume, small area and low cost. In addition, a large-flow high-power circulating oil pump of the extruder is integrated in an oil cooling unit, and the original oil pump power is reduced by 50% by utilizing a cooling scheme of actual large temperature difference and small flow of refrigeration.

Preferably, a coil pipe fan is arranged in an air supply pipe of the air-conditioning heat exchanger, and the air supply pipe is used for conveying cold air to the post of the extruder.

Preferably, the oil cooling unit is arranged beside the hydraulic oil tank or integrally arranged on the frame of the extruder, and the hydraulic oil tank is connected with the oil cooling heat exchanger through a pipeline.

Drawings

FIG. 1 is a schematic connection diagram of a hydraulic oil refrigerating system of an extruder with a post air conditioner.

Fig. 2 is a first perspective view of a cooling unit adopting the hydraulic oil refrigerating system of the extruder.

Fig. 3 is a perspective view of a cooling unit of the hydraulic oil refrigerating system using the extruder.

Detailed Description

Reference will now be made in detail to the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate 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 the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.

In the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

As shown in fig. 1 to 3, the present embodiment relates to an extruder hydraulic oil refrigeration system with a post air conditioner, which comprises an oil cooling heat exchanger 7 with a first heat exchange pipe 71 and a second heat exchange pipe 72 arranged therein, and an air conditioner cooling system 100. The first heat exchange pipe 71 of the oil-cooled heat exchanger 7 is connected with the extruder hydraulic system 200, and the second heat exchange pipe 72 is connected with the air-conditioning cooling system 100. The air-conditioning cooling system 100 comprises a cooling loop 100a which is arranged in a circulating manner, and a compressor 5, a condenser 2, an oil-cooling expansion valve 8 and an air-conditioning heat exchanger 6 which are sequentially connected to the cooling loop 100 a. The second heat exchange tube 72 of the oil-cooled heat exchanger 7 is connected to the cooling circuit 100a between the oil-cooled expansion valve 8 and the air-conditioning heat exchanger 6, and the extruding machine oil in the first heat exchange tube 71 in the oil-cooled heat exchanger 7 exchanges heat with the refrigerant in the second heat exchange tube 72. The technical scheme relates to an extruder hydraulic oil refrigerating system with a post air conditioner, wherein an air conditioner cooling system 100 in the extruder hydraulic oil refrigerating system comprises a cooling loop 100a, and a compressor 5, a condenser 2, an air conditioner heat exchanger 6, an air conditioner expansion valve and an oil cooling expansion valve 8 which are connected to the cooling loop 100 a.

When the equipment is operated, the refrigerant gas is compressed into stroke liquid by the compressor 5, enters the condenser 2 and is cooled by air cooling. The cooled refrigerant directly enters an oil-cooled expansion valve 8 and is controlled to 5-10 ℃ to enter an oil-cooled heat exchanger 7 for heat exchange, the temperature of the refrigerant is increased by 5-10 ℃ after the heat exchange of the oil-cooled heat exchanger 7, the refrigerant enters an air-conditioning heat exchanger 6 in a 10-20 ℃ gaseous state, the heat exchange is carried out through a 1P air-conditioning heat exchanger 6, the residual heat at 20-25 ℃ flows back to the refrigeration compressor 5 in a gaseous state to become a source for the re-operation of the refrigeration compressor 5, and the next cycle is started.

Based on the scheme, the invention adopts the air-conditioning cooling system 100 to cool the oil-cooling heat exchanger 7, and replaces the cooling tower mode in the traditional scheme. The cooling equipment with small volume and automatic constant temperature of oil temperature is provided for the extruder, the occupied area of the cooling equipment is reduced, the energy consumption during oil cooling is reduced, and the problems that the temperature of hydraulic oil is uncontrollable due to the fact that the oil temperature is lowered by means of natural cooling, the oil temperature in summer is too high, and the oil temperature in winter is too low can be solved.

Further, the air-conditioning heat exchanger 6 further includes an air supply pipe 61 for conveying cold air after heat exchange with the heat exchange core body on the inner side of the air-conditioning heat exchanger to a post, and in a specific embodiment, a coil fan 62 is arranged in the air supply pipe 61 of the air-conditioning heat exchanger 6. In the scheme, the refrigerant enters the air-conditioning heat exchanger 6 in a gaseous state at 10-20 ℃, at the moment, cold air after heat exchange with the inner side heat exchange core body is conveyed to a post through the blast pipe 61, the temperature of the air supplied by a general post is 20-25 ℃, the post air conditioner is provided for workshop workers, and the working environment of the operation workers is improved.

In the specific scheme shown in fig. 1, the condenser 2 is a finned condenser, and an axial flow fan 1 is further arranged beside the finned condenser. In this scheme, condenser 2 adopts the air-cooled mode cooling, and the fin is used for increasing condenser 2's heat radiating area, and axial fan 1 is used for increasing the peripheral air current of fin condenser. The hydraulic system 200 of the extruder at least comprises a hydraulic oil tank 3, an oil passage 200a connected to the hydraulic oil tank 3, and an oil pump 9 and an oil circulation filter 4 arranged on the oil passage 200 a. The first heat exchange pipe 71 of the oil-cooled heat exchanger 7 is connected to the oil passage 200 a.

As further shown in fig. 2 and 3, the air-conditioning system further comprises a casing 11, and the compressor 5, the condenser 2, the air-conditioning heat exchanger 6, the air-conditioning expansion valve, the oil-cooling expansion valve 8, the oil pump 9 and the oil-cooling heat exchanger 7 are all installed inside the casing 11 to form an oil-cooling unit. The oil cooling unit is arranged beside the hydraulic oil tank or integrally arranged on the frame of the extruder, and the hydraulic oil tank 3 is connected with the oil cooling heat exchanger through a pipeline. The scheme integrates the plate heat exchanger cooled by the extruding machine and having large area and high cost into the oil cooling unit, and adopts the plate heat exchanger with small volume, small area and low cost. In addition, a large-flow high-power circulating oil pump 9 of the extruder is integrated in the oil cooling unit, and the power of the original oil pump 9 is reduced by 50% by utilizing a cooling scheme of refrigeration with actual large temperature difference and small flow.

In conclusion, the technical effects of the hydraulic oil refrigerating system of the extruding machine are as follows:

1, a small-size cooling device with automatic constant temperature and oil temperature is provided for the extruder, and the occupied area of the cooling device is reduced.

And 2, reducing energy consumption during oil cooling.

3, the problems that the temperature of the hydraulic oil is uncontrollable due to the fact that the oil temperature is cooled by means of natural cooling, the oil temperature is too high in summer and too low in winter are solved.

And 4, providing a post air conditioner for workshop workers, and improving the working environment of the operation workers.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention.

Claims

1. A hydraulic oil refrigerating system of an extruder with a post air conditioner comprises an oil cooling heat exchanger (7) internally provided with a first heat exchange pipe (71) and a second heat exchange pipe (72) and an air conditioner cooling system (100); a first heat exchange pipe (71) of the oil-cooled heat exchanger (7) is connected with an extruder hydraulic system (200), and a second heat exchange pipe (72) is connected with an air-conditioning cooling system (100); the air-conditioning cooling system (100) comprises a cooling loop (100 a) which is arranged in a circulating mode, and a compressor (5), a condenser (2), an oil-cooling expansion valve (8) and an air-conditioning heat exchanger (6) which are connected to the cooling loop (100 a) in sequence; a second heat exchange pipe (72) of the oil-cooled heat exchanger (7) is connected to a cooling loop (100 a) between the oil-cooled expansion valve (8) and the air-conditioning heat exchanger (6), and the extruder oil in a first heat exchange pipe (71) in the oil-cooled heat exchanger (7) exchanges heat with the refrigerant in the second heat exchange pipe (72); the air-conditioning heat exchanger (6) also comprises an air supply pipe (61) for conveying cold air after exchanging heat with the heat exchange core body on the inner side of the air-conditioning heat exchanger to a post.

2. The extrusion machine hydraulic oil refrigerating system with the post air conditioner as claimed in claim 1, wherein: the condenser (2) is a fin condenser, and an axial flow fan (1) is arranged beside the fin condenser.

3. The extruder hydraulic oil refrigerating system with the post air conditioner as claimed in claim 1, wherein: the hydraulic system (200) of the extruder at least comprises a hydraulic oil tank (3), an oil passage (200 a) connected with the hydraulic oil tank (3), an oil pump (9) and an oil circulation filter (4) arranged on the oil passage (200 a); the first heat exchange tube (71) of the oil-cooled heat exchanger (7) is connected in the oil passage (200 a).

4. The extrusion machine hydraulic oil refrigerating system with the post air conditioner as claimed in claim 3, wherein: still include casing (11), compressor (5), condenser (2), air conditioner heat exchanger (6), oil cooling expansion valve (8), oil pump (9) and oil cooling heat exchanger (7) all install in casing (11) inside constitution oil cooling unit.

5. The extrusion machine hydraulic oil refrigerating system with the post air conditioner as claimed in claim 1, wherein: a coil pipe fan (62) is arranged in an air supply pipe (61) of the air-conditioning heat exchanger (6), and cold air is conveyed to the post of the extruder by the air supply pipe (61).

6. The extruder hydraulic oil refrigerating system with the post air conditioner as claimed in claim 4, wherein: the oil cooling unit is arranged beside the hydraulic oil tank (3) or integrally arranged on the frame of the extruder, and the hydraulic oil tank (3) is connected with the oil cooling heat exchanger (7) through a pipeline.