Constant-temperature and constant-pressure lubricating oil supply device for heat pump rectification

Abstract

The utility model discloses a constant-temperature and constant-pressure lubricating oil supply device for heat pump rectification, and relates to the field of heat pump oil supply devices. Comprising an oil mist separator, an auxiliary oil pump, a mechanical oil pump, a motor oil return pipeline, a motor oil supply pipeline, a duplex oil cooler, a temperature control valve, a double-cylinder oil filter, an oil supply pressure transmitter, an oil supply temperature sensor and a local pressure gauge, and further comprises an oil tank body, the auxiliary oil pump and the mechanical oil pump are both fixedly installed on the upper side of the oil tank body, the motor oil return pipeline and the motor oil supply pipeline are both fixedly arranged on the upper side of the oil tank body, and the auxiliary oil pump and the mechanical oil pump are both connected with the motor oil supply pipeline. The duplex oil cooler, the temperature control valve, the double-barrel oil filter, the oil supply pressure transmitter, the oil supply temperature sensor and the local pressure gauge are fixedly arranged on the right side of the upper end of the oil tank body. The constant-temperature and constant-pressure oil supply device has the advantages of being capable of solving the constant-temperature and constant-pressure state when oil is supplied to the gear box, good in reliability and easy to install.

Description

Technical Field

[0001] The utility model relates to the field of heat pump oil supply devices, in particular to a constant temperature and constant pressure lubricating oil supply device for heat pump rectification. Background Technique

[0002] In the rectification industry, the heat pump centrifugal compressor is widely used and belongs to the key core equipment in the process section. The requirements for the reliability, safety and low failure rate of the heat pump compressor are very high.

[0003] The heat pump compressor achieves high speed and high efficiency work by gear speed increase. Most of the bearings in the gearbox are forced lubricated with lubricating oil, and the quality of the oil supply state determines the stability of the high-speed rotor group during operation. Once the rotor group is unstable, mechanical accidents are likely to occur, causing irreparable damage to the core components. Therefore, we propose a constant temperature and constant pressure lubricating oil supply device for heat pump rectification. Content of the Utility Model

[0004] The purpose of the utility model is to provide a constant temperature and constant pressure lubricating oil supply device for heat pump rectification.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A constant temperature and constant pressure lubricating oil supply device for heat pump rectification, including an oil mist separator, an auxiliary oil pump, a mechanical oil pump, a motor oil return pipeline, a motor oil supply pipeline, a double-tube oil cooler, a temperature control valve, a double-barrel oil filter, an oil supply pressure transmitter, an oil supply temperature sensor and a local pressure gauge, and further including an oil tank body. The oil mist separator is fixedly arranged on the left side of the upper end of the oil tank body. The auxiliary oil pump and the mechanical oil pump are both fixedly installed on the upper side of the oil tank body. The motor oil return pipeline and the motor oil supply pipeline are both fixedly arranged on the upper side of the oil tank body. The auxiliary oil pump and the mechanical oil pump are both connected to the motor oil supply pipeline. The double-tube oil cooler, the temperature control valve, the double-barrel oil filter, the oil supply pressure transmitter, the oil supply temperature sensor and the local pressure gauge are all fixedly arranged on the right side of the upper end of the oil tank body. The motor oil supply pipeline is connected to the double-tube oil cooler. The double-tube oil cooler is connected to the double-barrel oil filter through the temperature control valve. The oil supply pressure transmitter, the oil supply temperature sensor and the local pressure gauge are sequentially installed at the output end of the double-barrel oil filter.

[0006] As a further solution of the utility model: A tank temperature measurement is fixedly arranged on the left side of the oil tank body.

[0007] As a further solution of the utility model: A tank level gauge is fixedly arranged on the left side of the oil tank body.

[0008] As a further solution of the utility model: The auxiliary oil pump is connected to the motor oil supply pipeline through a one-way valve.

[0009] As a further solution of the utility model: The mechanical oil pump is connected to the tee position of the motor oil supply pipeline through a safety valve.

[0010] Adopting the above technical solution, compared with the prior art, the beneficial effects of the utility model are as follows:

[0011] 1. The utility model provides starting, stopping and protecting lubricating oil for the lubricating oil circuit through an auxiliary oil pump; the mechanical oil pump provides normal oil supply for the lubricating oil circuit, and the mechanical oil pump rotates with the motor; the double-connected oil cooler and the double-barrel oil filter can be switched online with a constant flow rate, which is convenient for replacing spare parts and cleaning; the temperature control valve keeps the lubricating oil at an inlet oil temperature; the safety valve ensures the safety and constant oil pressure of the lubricating oil circuit; the oil supply pressure and temperature sensors feedback the real oil supply state;

[0012] Before starting the compressor, first start the auxiliary oil pump, adjust the oil supply pressure to 0.25 MPa by using the pressure regulating device of the auxiliary oil pump, set the automatic start-stop conditions of the auxiliary oil pump (stop when the oil supply pressure ≥ 0.4 MPa, start when the oil supply pressure ≤ 0.1 MPa), open the circulating water of the oil cooler, start the compressor, and when the oil pressure reaches the condition for stopping the auxiliary oil pump, the auxiliary oil pump stops, and the mechanical oil pump continuously supplies oil to the gearbox. After the oil tank temperature is constant, the oil supply temperature and pressure of the gearbox are stable;

[0013] Therefore, a constant-temperature and constant-pressure lubricating oil supply system for heat pump rectification proposed by the utility model can solve the constant-temperature and constant-pressure state when supplying oil to the gearbox. Therefore, it has good reliability and is simple to install.

[0014] Other advantages, objectives and features of the utility model will be elaborated to some extent in the subsequent specification, and to some extent, will be obvious to those skilled in the art based on the study of the following text, or can be taught from the practice of the utility model. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure in the embodiment of the utility model.

[0016] In the figure: 1. Oil mist separator; 2. Oil tank temperature measurement; 3. Oil tank level gauge; 4. Auxiliary oil pump; 5. Check valve; 6. Mechanical oil pump; 7. Safety valve; 8. Motor oil return pipeline; 9. Motor oil supply pipeline; 10. Double-connected oil cooler; 11. Temperature control valve; 12. Double-barrel oil filter; 13. Oil supply pressure transmitter; 14. Oil supply temperature sensor; 15. Local pressure gauge; 16. Oil tank body. Detailed Description of the Embodiment

[0017] The following further describes the specific embodiments of the present utility model with reference to the accompanying drawings. It should be noted here that the description of these embodiments is used to help understand the present utility model, but does not limit the present utility model.

[0018] In addition, the technical features involved in the various embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0019] Please refer to the attached Figure 1 , a constant temperature and constant pressure lubricating oil supply device for heat pump rectification of the present utility model, includes an oil mist separator 1, an auxiliary oil pump 4, a mechanical oil pump 6, a motor oil return pipeline 8, a motor oil supply pipeline 9, a double - type oil cooler 10, a temperature control valve 11, a double - barrel oil filter 12, an oil supply pressure transmitter 13, an oil supply temperature sensor 14 and a local pressure gauge 15. It also includes an oil tank body 16. The oil mist separator 1 is fixedly arranged on the left side of the upper end of the oil tank body 16. The auxiliary oil pump 4 and the mechanical oil pump 6 are both fixedly installed on the upper side of the oil tank body 16. The motor oil return pipeline 8 and the motor oil supply pipeline 9 are both fixedly arranged on the upper side of the oil tank body 16. The auxiliary oil pump 4 and the mechanical oil pump 6 are both connected to the motor oil supply pipeline 9. The double - type oil cooler 10, the temperature control valve 11, the double - barrel oil filter 12, the oil supply pressure transmitter 13, the oil supply temperature sensor 14 and the local pressure gauge 15 are all fixedly arranged on the right side of the upper end of the oil tank body 16. The motor oil supply pipeline 9 is connected to the double - type oil cooler. The double - type oil cooler is connected to the double - barrel oil filter 12 through the temperature control valve 11. The oil supply pressure transmitter 13, the oil supply temperature sensor 14 and the local pressure gauge 15 are sequentially installed at the output end of the double - barrel oil filter 12.

[0020] In an embodiment of the present utility model: a tank temperature sensor 2 is fixedly arranged on the left side of the oil tank body 16.

[0021] In an embodiment of the present utility model: a tank level gauge 3 is fixedly arranged on the left side of the oil tank body 16.

[0022] In an embodiment of the present utility model: the auxiliary oil pump 4 is connected to the motor oil supply pipeline 9 through a check valve 5.

[0023] In an embodiment of the present utility model: the mechanical oil pump 6 is connected to the tee position of the motor oil supply pipeline 9 through a safety valve 7.

[0024] Working principle:

[0025] The auxiliary oil pump 4 and the one-way valve 5 are the auxiliary oil supply pipe sections, the mechanical oil pump 6 and the safety valve 7 are the main oil pipe sections, and they converge at the tee joint. After convergence, they are connected to the double-tube oil cooler 10 and the temperature control valve 11. The temperature control valve 11 controls the flow rate and flow direction of the lubricating oil. After constant temperature, it enters the double-barrel oil filter 12. The filtered lubricating oil enters the gearbox to lubricate the bearings. A fuel supply pressure transmitter 13, a fuel supply temperature sensor 14, and a local pressure gauge 15 are respectively provided in the gear inlet oil pipe section to monitor the fuel supply status;

[0026] The oil mist separator 1 is used to keep the pressure of the lubricating oil inside the fuel tank at a constant pressure. The fuel tank temperature measurement 2 monitors the change of the fuel tank temperature. The fuel tank level gauge 3 feedbacks the position of the lubricating oil volume, and the highest level, normal oil level, and lowest level are set.

[0027] The above front, back, left, right, up, and down are all based on the Figure 1 in the attached drawings of the specification. Taking the observer's viewing angle as the standard, the side of the device facing the observer is defined as the front, and the left side of the observer is defined as the left, and so on.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the protection scope of the present invention.

[0029] It should be noted that the device structure and drawings of the present invention mainly describe the principle of the present invention. In terms of the technical principle of this design, the settings of the power mechanism, power supply system, and control system of the device are not fully described. Under the premise that those skilled in the art understand the principle of the above-mentioned invention, the specific details of its power mechanism, power supply system, and control system can be clearly obtained. The control method of the application document is automatically controlled by a controller, and the control circuit of the controller can be realized by simple programming by those skilled in the art.

[0030] The standard parts used therein can all be purchased from the market, and can also be customized according to the records of the specification and drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding in the existing technology. The machinery, parts, and equipment all adopt conventional models in the existing technology, and the components known to those skilled in the art, and their structures and principles can all be known by those skilled in the art through technical manuals or through conventional experimental methods.

[0031] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the described embodiments.

[0032] For those skilled in the art, without departing from the principle and spirit of the present utility model, various changes, modifications, substitutions, and variations made to these embodiments still fall within the protection scope of the present utility model.

Claims

1. A constant temperature and constant pressure lubricating oil supply device for heat pump distillation, characterized in that: It includes an oil mist separator (1), an auxiliary oil pump (4), a mechanical oil pump (6), a motor oil return pipeline (8), a motor oil supply pipeline (9), a dual oil cooler (10), a temperature control valve (11), a double-barrel oil filter (12), an oil supply pressure transmitter (13), an oil supply temperature sensor (14) and a local pressure gauge (15), and also includes an oil tank body (16). The oil mist separator (1) is fixedly arranged on the left side of the upper end of the oil tank body (16). The auxiliary oil pump (4) and the mechanical oil pump (6) are both fixedly installed on the upper side of the oil tank body (16). The motor oil return pipeline (8) and the motor oil supply pipeline (9) are both fixedly arranged on the upper side of the oil tank body (16). The auxiliary oil pump (4) and the mechanical oil pump (6) are both connected to the motor oil supply pipeline (9). The dual oil cooler (10), the temperature control valve (11), the double-barrel oil filter (12), the oil supply pressure transmitter (13), the oil supply temperature sensor (14) and the local pressure gauge (15) are all fixedly arranged on the right side of the upper end of the oil tank body (16). The motor oil supply pipeline (9) is connected to the dual oil cooler. The dual oil cooler is connected to the double-barrel oil filter (12) through the temperature control valve (11). The oil supply pressure transmitter (13), the oil supply temperature sensor (14) and the local pressure gauge (15) are sequentially installed at the output end of the double-barrel oil filter (12).

2. The constant temperature and constant pressure lubricating oil supply device for heat pump distillation according to claim 1, wherein: A tank temperature measurement device (2) is fixedly arranged on the left side of the oil tank body (16).

3. The constant temperature and constant pressure lubricating oil supply device for heat pump distillation according to claim 1, wherein: A tank level gauge (3) is fixedly arranged on the left side of the oil tank body (16).

4. The constant temperature and constant pressure lubricating oil supply device for heat pump distillation according to claim 1, wherein: The auxiliary oil pump (4) is connected to the motor oil supply pipeline (9) through a check valve (5).

5. A constant temperature and constant pressure lubricating oil supply device for heat pump distillation according to claim 1, characterized in that: The mechanical oil pump (6) is connected to the tee position of the motor oil supply pipeline (9) through a safety valve (7).

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