Novel oil separator of screw type ultra-high-temperature heat pump

Abstract

The utility model relates to the technical field of oil separation equipment, in particular to an oil separator of a novel screw type ultra-high-temperature heat pump, which comprises a separation shell for oil-gas separation and an oil-gas separation plate, effectively prolongs the contact time of oil gas and the oil-gas separation plate, improves the oil-gas separation efficiency and ensures that the oil gas can be fully separated. And by adopting the stacked wire meshes, the contact area of gas-liquid separation is effectively increased, and the separation efficiency is improved. The air flow resistance is effectively reduced through holes of the metal wire mesh, the efficiency of air flow passing through the separation plate is improved, the metal wire mesh layer is pressed through the limiting pressing ring, deformation or displacement in the operation process is prevented, and the firmness of the whole structure is enhanced. The oil bag is provided with a blind pipe temperature measuring probe so that the temperature of the oil bag can be conveniently monitored, the oil temperature can be monitored and adjusted in real time through a built-in electric heater and an oil temperature adjuster, the oil temperature can be rapidly cooled and heated, the requirements for system starting and efficient operation are met, hydraulic oil flowing back to the heat pump is cooled, and carbonization caused by the too high temperature of the hydraulic oil is prevented.

Description

Technical Field

[0001] This utility model relates to the technical field of oil separation equipment, specifically to a novel oil separator for a screw-type ultra-high temperature heat pump. Background Technology

[0002] Currently, according to Chinese utility model patent CN 202321767130, entitled "Return Oil Device of High-Efficiency Oil Separator," a separator body is disclosed. A partition is fixedly installed on the inner wall of the separator body, and an exhaust pipe is fixedly connected to the inner top wall of the separator body. The top of the exhaust pipe penetrates and extends to the top of the separator body. A one-way valve is installed on the exhaust pipe, and a flow guide is fixedly connected to the exhaust pipe, contacting the inner wall of the separator body. An inlet pipe is fixedly connected to the right side of the separator body, communicating with the interior of the separator body. A filter plate is installed inside the exhaust pipe. This utility model achieves filter plate vibration through the impact of airflow, causing impurities to fall off the filter plate and preventing blockage of the exhaust pipe. Simultaneously, by setting a floating plate, the oil level rises with the return oil flow to seal the oil passage, preventing excessive backflow and blockage caused by excessively high oil levels. Therefore, highly efficient oil-gas separation can be achieved.

[0003] However, the patent does not consider oil cooling. If the high-temperature oil returns to the press and is reheated, it will carbonize and fail, losing its lubricating effect and damaging the press. When the press starts, the mixture of refrigerant and oil flowing into the press can also cause damage. Summary of the Invention

[0004] In view of the shortcomings of the prior art and to solve the problems mentioned in the background art, the technical problem to be solved by this utility model is to provide a new type of screw-type ultra-high temperature heat pump oil separator that is reasonably designed and can smoothly and timely discharge, collect and recycle the medium in the solar collector.

[0005] The technical problem to be solved by this utility model is achieved through the following technical solution: a novel oil separator for a screw-type ultra-high temperature heat pump, comprising a separation shell for oil-gas separation, an oil-gas inlet on one side of the separation shell, and a gas outlet on the other side of the separation shell, wherein a first oil-gas separation plate, a second oil-gas separation plate, and a third oil-gas separation plate are vertically arranged between the oil-gas inlet and the gas outlet, the first oil-gas separation plate and the second oil-gas separation plate being closer to the oil-gas inlet side, and the third oil-gas separation plate being closer to the oil-gas outlet side; the multiple oil-gas separation plates effectively increase the contact time between the oil and gas and the oil-gas separation plates, improve the oil-gas separation efficiency, and ensure that the oil and gas can be fully separated.

[0006] An oil reservoir is located below the separator housing, with a collection port between the oil reservoir and the separator housing, connecting their internal spaces. Three oil-gas separation plates are positioned directly above the oil reservoir's collection port. The oil reservoir is equipped with an internally extending electric heater and a blind-tube temperature probe, while an oil temperature regulator is fitted to the outer wall of the reservoir. The blind-tube temperature probe facilitates monitoring of the oil reservoir temperature, ensuring the equipment operates under optimal conditions. The built-in electric heater and oil temperature regulator monitor and adjust the oil temperature in real time, rapidly cooling and heating the oil to meet the requirements of system startup and efficient operation. The hydraulic oil returning to the heat pump is cooled to prevent carbonization caused by excessively high hydraulic oil temperatures.

[0007] As a further embodiment of this invention, the oil temperature regulator comprises several heat exchangers, each including a heat exchange shell and heat exchange tubes. Each heat exchange tube has a heat exchange inlet pipe and a heat exchange outlet pipe at both ends. An external heat exchange unit is located between the heat exchange inlet pipe and the heat exchange outlet pipe, and the heat exchange tubes are circulatedly connected to the external heat exchange unit. The external heat exchange unit drives the medium inside the heat exchange tubes to exchange heat with the medium inside the heat exchange shell. The heat exchange shell is fitted tightly against the oil reservoir. Through the circulated connection between the heat exchange tubes and the external heat exchange unit, efficient heat exchange between the media can be achieved, rapidly regulating the oil temperature and maintaining a stable working environment. The heat exchange shell's close fit to the oil reservoir ensures high heat transfer efficiency, effectively cooling or heating the hot oil in the oil reservoir.

[0008] As a further embodiment of this invention, the oil temperature regulator is a microchannel heat exchanger or a tubular heat exchanger.

[0009] As a further embodiment of this utility model, the first oil-gas separation plate, the second oil-gas separation plate, and the third oil-gas separation plate are all made of several layers of rigid metal wire mesh stacked together. The stacked metal wire mesh is provided with a limiting pressure ring along the circumference. A connecting ring plate is provided between the limiting pressure ring and the inner wall of the separation shell. The connecting ring plate is fixed to the inner wall of the separation shell by spot welding at equal intervals along the circumference.

[0010] The oil-gas separator plate employs a layered metal wire mesh structure, which effectively increases the contact area for gas-liquid separation, thereby improving separation efficiency. The porous structure of the metal wire mesh effectively reduces gas flow resistance, enhances the efficiency of airflow through the separator plate, and optimizes the overall system performance. A limiting pressure ring is used to press the metal wire mesh layers together to prevent deformation or displacement during operation, enhancing the overall structural robustness.

[0011] As a further embodiment of this utility model, the bottom of the oil tank is provided with an oil outlet, and an oil outlet assembly is provided on the oil outlet. The oil outlet assembly includes an oil outlet pipe and an oil outlet valve is provided on the oil outlet pipe.

[0012] As a further embodiment of this invention, the blind tube temperature probe includes a blind tube extending into the oil reservoir, with the opening of the blind tube located on the outside of the oil reservoir. A temperature sensor is installed inside the blind tube. The blind tube temperature probe measures the temperature of the oil in the oil reservoir but remains separate from the oil, never coming into contact with it.

[0013] As a further embodiment of this invention, the oil and gas inlet is located on the top surface of the separation shell, and an oil and gas inlet pipe is provided at the inlet, extending into the inner cavity of the separation shell. A horizontal bend is provided at the lower end of the oil and gas inlet pipe, with the inlet of the horizontal bend pointing away from the inner wall of the separation shell away from the first oil and gas separation plate. The complete provision of the oil and gas inlet pipe buffers the oil and gas as it enters the separation shell, making backflow difficult and resulting in higher oil and gas separation efficiency.

[0014] As a further embodiment of this invention, the air outlet is located on the top surface of the separation shell, and an air outlet pipe is provided at the air outlet, extending into the inner cavity of the separation shell. A horizontal bend is provided at the lower end of the air outlet pipe, with the bend opening facing away from the inner wall of the separation shell away from the third oil-gas separation plate. Utilizing the natural upward movement of gas, the residence time of gas in the separation chamber is effectively reduced, ensuring that gas can be smoothly discharged from the separation chamber and improving the overall separation efficiency.

[0015] Compared with existing technologies, the beneficial effects of this utility model are as follows: This system includes a separation shell for oil-gas separation. One side of the separation shell has an oil-gas inlet, and the other side has an outlet. Three vertically arranged oil-gas separation plates are positioned between the oil-gas inlet and the outlet. These multiple oil-gas separation plates effectively increase the contact time between the oil and gas and the plates, improving oil-gas separation efficiency and ensuring thorough separation. Furthermore, the oil-gas separation plates employ a layered metal wire mesh structure, which effectively increases the contact area for gas-liquid separation, thereby improving separation efficiency. The porous structure of the metal wire mesh effectively reduces gas flow resistance, enhances the efficiency of airflow through the separation plates, and optimizes the overall system performance. A limiting pressure ring is used to press the metal wire mesh layer, preventing deformation or displacement during operation and strengthening the overall structural integrity.

[0016] The oil tank is equipped with a blind tube temperature probe to facilitate monitoring of the oil tank temperature, ensuring that the equipment operates under optimal conditions. The built-in electric heater and oil temperature regulator can monitor and adjust the oil temperature in real time, quickly cooling and heating the oil to meet the needs of system startup and efficient operation. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 This is the main view of the oil-gas separator plate structure of this utility model. Figure 1 ;

[0019] Figure 3 This is the main view of the oil-gas separator plate structure of this utility model. Figure 2 ;

[0020] Figure 4 This is a side view of the oil-gas separator plate structure of this utility model.

[0021] In the diagram: 1-Oil tank, 101-Oil outlet pipe, 111-Oil outlet valve, 2-Electric heater, 3-Oil temperature regulator, 4-Separation housing, 405-Oil / gas inlet, 401-Gas outlet, 411-Gas outlet pipe, 402-Third oil / gas separator plate, 403-Second oil / gas separator plate, 404-First oil / gas separator plate, 405-Oil / gas inlet, 451-Oil / gas inlet pipe, 406-Collection port, 5-Blind tube temperature probe, 6-Metal wire mesh, 7-Limiting pressure ring. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0023] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). In the description of this utility model, it should be understood that the terms "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 used only for the convenience of describing this utility model and for 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 utility model.

[0024] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature means that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature means that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0025] Example 1

[0026] As attached Figure 1 As shown, an oil separator for a novel screw-type ultra-high temperature heat pump includes a separation shell 4 for oil-gas separation. An oil-gas inlet 405 is provided on one side of the separation shell. The oil-gas inlet is located on the top surface of the separation shell. An oil-gas inlet pipe 451 is provided at the oil-gas inlet, extending into the inner cavity of the separation shell. A horizontal bend is provided at the lower end of the oil-gas inlet pipe, with the opening of the horizontal bend pipe facing away from the inner wall of the separation shell away from the first oil-gas separation plate.

[0027] The mixture of hydraulic oil and high-temperature gaseous refrigerant enters along the oil-gas inlet pipe and flows into the separator housing through the horizontal bend inlet pipe.

[0028] The other side of the separation shell is provided with an air outlet 401. The air outlet is located on the top surface of the separation shell. An air outlet pipe 411 is provided at the air outlet. The air outlet pipe extends into the inner cavity of the separation shell. A horizontal bend is provided at the lower end of the air outlet pipe. The opening of the horizontal bend pipe is set towards the inner wall of the separation shell away from the third oil-gas separation plate.

[0029] As attached Figure 2 - Appendix Figure 4 As shown, a first oil-gas separation plate 404, a second oil-gas separation plate 403, and a third oil-gas separation plate 402 are vertically arranged between the oil-gas inlet 405 and the gas outlet 401. The first oil-gas separation plate and the second oil-gas separation plate are close to the oil-gas inlet side, and the third oil-gas separation plate is close to the oil-gas outlet side.

[0030] The first oil-gas separator plate 404, the second oil-gas separator plate 403, and the third oil-gas separator plate 402 are all made of several layers of rigid metal wire mesh 6 stacked together, and the metal wire mesh is made of stainless steel. The stacked metal wire mesh is provided with a limiting pressure ring 7 around its circumference. A connecting ring plate is provided between the limiting pressure ring and the inner wall of the separator housing. The connecting ring plate is spot-welded to the inner wall of the separator housing at equal intervals around its circumference. The stacked metal wire mesh forms a separation component that allows gas to pass through and where the gas-liquid mixture condenses into a liquid state when it hits the multi-layered, tightly pressed metal wire mesh. A liquid inlet channel is formed between the first oil-gas separation plate and the collection port. The condensed liquid hydraulic oil falls down along the collection port under the action of gravity. When the gaseous oil and high-temperature gaseous refrigerant pass through the layers of metal wire mesh of the first oil-gas separation plate, the hydraulic oil condenses into a liquid state and slides down along the first oil-gas separation plate 404. The high-temperature gaseous refrigerant and the residual liquid hydraulic oil continue to flow through the first oil-gas separation plate 404 and come into contact with the second oil-gas separation plate 403. The high-temperature gaseous refrigerant continues to flow through the first oil-gas separation plate 404 towards the third oil-gas separation plate 402. The residual hydraulic oil comes into contact with the second oil-gas separation plate and condenses into a liquid state, then slides down along the second oil-gas separation plate. After the second separation, when it flows to the third oil-gas separation plate, gas-liquid separation occurs again.

[0031] When hydraulic oil and gas molecules enter through the inlet and pass through the three oil-gas separation plates at high speed, they rotate and collide at high speed within the three plates, forming countless eddies. This causes an instantaneous physical change in the flow and direction of the oil and gas. Due to the high density and large volume of the oil molecules, they undergo three separations during the change process and are directly thrown onto the oil-gas separation plates. The hot oil condenses into a liquid state at a low temperature after encountering the oil-gas separation plates and flows into the oil tank along the oil-gas separation plates. The pure, high-temperature gaseous refrigerant, after being separated by the third oil-gas separation plate, flows upward and flows to the outlet through the third oil-gas separation plate. It is then transported to the heat pump circulation system for recycling along the outlet pipe.

[0032] Below the separator housing 4 is an oil tank 1, and a collection port 406 is provided between the oil tank and the separator housing. The oil tank and the separator housing are connected through the collection port. The three oil-gas separation plates are all located directly above the oil tank collection port. The separated hydraulic oil falls into the oil tank along the collection port and accumulates continuously.

[0033] The oil reservoir is equipped with an internally extending electric heater 2 and a blind tube temperature probe 5. The blind tube temperature probe includes a blind tube extending into the oil reservoir, with the opening of the blind tube located on the outside of the oil reservoir. A temperature sensor is installed inside the blind tube. The temperature sensor detects the temperature of the hydraulic oil collected in the oil reservoir in real time. The system is equipped with a controller. After receiving the signal from the temperature sensor, the controller selectively adjusts the electric heater 2 and the oil temperature regulator 3 according to the system operation progress.

[0034] An oil temperature regulator 3 is fitted to the outer wall of the oil tank. The oil temperature regulator 3 includes four heat exchangers, which are either microchannel heat exchangers or tubular heat exchangers. The four heat exchangers surround the oil tank. Each heat exchanger includes a heat exchange shell and heat exchange tubes. Heat exchange tubes have heat exchange inlet and outlet pipes at both ends. An external heat exchange unit is located between the heat exchange inlet and outlet pipes. The heat exchange tubes are circulatedly connected to the external heat exchange unit. The external heat exchange unit drives the medium inside the heat exchange tubes to exchange heat with the medium inside the heat exchange shell. The heat exchange shell is fitted to the oil tank. When the external heat exchange unit circulates and supplies a low-temperature medium, it cools the hydraulic oil in the oil tank. When the external heat exchange unit circulates and supplies a high-temperature medium, it heats the hydraulic oil in the oil tank.

[0035] The liquid flow path in the oil temperature regulator 3 cools the oil tank, cools the returning hydraulic oil 1, and prevents the hydraulic oil temperature from being too high and causing carbonization.

[0036] Utilizing the buoyancy principle of hot gas, the hydraulic oil is quickly separated while being cooled and locked in the oil tank, preventing it from flowing away with the high-temperature gaseous refrigerant.

[0037] The oil tank has an oil outlet at the bottom, and an oil outlet assembly is provided on the oil outlet. The oil outlet assembly includes an oil outlet pipe 101 and an oil outlet valve 111 on the oil outlet pipe.

[0038] After the hydraulic oil accumulates in the oil tank, it is cooled down, and the oil outlet valve is opened, allowing the hydraulic oil to circulate in the compressor along the oil outlet pipe.

[0039] Example 2

[0040] When the compressor starts, the oil reservoir contains a mixture of hydraulic oil and refrigerant. If this mixture flows into the compressor, it can cause damage to the compressor.

[0041] When the external heat exchanger unit circulates and supplies high-temperature medium to the oil temperature regulator 3, it heats the hydraulic oil in the oil tank. The refrigerant vaporizes after being heated and separates out of the oil tank. The pure high-temperature gaseous refrigerant, after being separated by the third oil-gas separator 402, flows upward and flows to the outlet through the third oil-gas separator 402. It is then transported to the heat pump circulation system for recycling along the outlet pipe.

[0042] The hydraulic oil flowing into the compressor return port does not contain refrigerant and circulates within the compressor to protect it. When the temperature of the circulating medium in the evaporator is too low, electric heater 2 can be activated to heat the hydraulic oil in the oil tank. The preheated hydraulic oil then circulates within the compressor.

[0043] In the description of this specification, the terms "connection," "installation," "fixing," and "setting," etc., are interpreted broadly. For example, "connection" can mean a fixed connection or an indirect connection via intermediate components without affecting the relationship between components and the technical effect; it can also mean an integral connection or a partial connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model or utility model according to the specific circumstances. The above description is only a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the protection scope of this utility model.

Claims

1. A novel oil separator for a screw-type ultra-high temperature heat pump, characterized by: It includes a separation shell (4) for oil and gas separation, with an oil and gas inlet (405) on one side and an outlet (401) on the other side. A first oil and gas separation plate (404), a second oil and gas separation plate (403), and a third oil and gas separation plate (402) are vertically arranged between the oil and gas inlet and the outlet. The first and second oil and gas separation plates are close to the oil and gas inlet side, and the third oil and gas separation plate is close to the oil and gas outlet side. An oil tank (1) is provided below the separation shell. A collection port (406) is provided between the oil tank and the separation shell. The oil tank and the separation shell are connected through the collection port. The three oil-gas separation plates are located directly above the oil tank collection port. An internal electric heater (2) and a blind tube temperature probe (5) are provided on the oil tank. An oil temperature regulator (3) is attached to the outer wall of the oil tank.

2. A novel oil separator for screw type ultra-high temperature heat pump according to claim 1, characterized in that: The oil temperature regulator (3) consists of several heat exchangers, each including a heat exchange shell and a heat exchange tube. The heat exchange tube has a heat exchange inlet pipe and a heat exchange outlet pipe at both ends. An external heat exchange unit is provided between the heat exchange inlet pipe and the heat exchange outlet pipe. The heat exchange tube is circulatedly connected to the external heat exchange unit. The external heat exchange unit drives the medium in the heat exchange tube to exchange heat with the medium in the heat exchange shell. The heat exchange shell is fitted to the oil tank.

3. A novel oil separator for screw type ultra-high temperature heat pump according to claim 2, characterized in that: The oil temperature regulator (3) is a microchannel heat exchanger or a tubular heat exchanger.

4. A novel oil separator for screw type ultra-high temperature heat pump according to claim 1, characterized in that: The first oil-gas separation plate (404), the second oil-gas separation plate (403) and the third oil-gas separation plate (402) are all made of several layers of rigid metal wire mesh (6) stacked together. The stacked metal wire mesh is provided with a limiting pressure ring (7) along the circumference. A connecting ring plate is provided between the limiting pressure ring and the inner wall of the separation shell. The connecting ring plate is fixed to the inner wall of the separation shell by spot welding at equal intervals along the circumference.

5. A novel oil separator for screw type ultra-high temperature heat pump according to claim 1 characterized in that: The oil tank (1) has an oil outlet at the bottom, and an oil outlet assembly is provided on the oil outlet. The oil outlet assembly includes an oil outlet pipe (101) and an oil outlet valve (111) is provided on the oil outlet pipe.

6. A novel oil separator for screw type ultra-high temperature heat pump according to claim 1, characterized in that: The blind tube temperature probe (5) includes a blind tube extending into the oil tank, with the opening of the blind tube located on the outside of the oil tank, and a temperature sensor installed inside the blind tube.

7. A novel oil separator for screw type ultra-high temperature heat pump according to claim 1 characterized in that: The oil and gas inlet (405) is located on the top surface of the separation shell. An oil and gas inlet pipe (451) is provided at the oil and gas inlet. The oil and gas inlet pipe extends into the inner cavity of the separation shell. A horizontal bend is provided at the lower end of the oil and gas inlet pipe. The opening of the horizontal bend pipe is set towards the inner wall of the separation shell away from the first oil and gas separation plate.

8. A novel oil separator for screw type ultra-high temperature heat pump according to claim 1 characterized in that: The air outlet (401) is located on the top surface of the separation shell. An air outlet pipe (411) is provided at the air outlet. The air outlet pipe extends into the inner cavity of the separation shell. A horizontal bend is provided at the lower end of the air outlet pipe. The opening of the horizontal bend pipe is set towards the inner wall of the separation shell away from the third oil-gas separation plate.

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