A heating and refrigeration dual-purpose oil cooling control system pry body equipment

Abstract

The utility model discloses a kind of heating and refrigeration dual-purpose oil cooling control system pry body equipment, including hot oil side system, desalted water water replenishment side system, desalted water side system, heating and refrigeration side system, cooling tower system and intelligent control cabinet.Hot oil side system exchanges heat by full-welded plate heat exchanger;Desalted water side system is switched by desalted water internal circulation pump and cooling tower circulation pump, and cooperation electric regulating valve realizes winter heating and summer refrigeration mode;Heating and refrigeration side is by multiple sets of coil fan to indoor delivery heat or cold quantity;Intelligent control cabinet integrated control entire system operation.The utility model realizes the integration of all-year heating and refrigeration function, with the advantages of energy-efficient, control accurate, stable and reliable operation, small footprint and easy to install and maintain.

Description

Technical Field

[0001] This utility model relates to the field of heating and cooling technology in oil refineries, specifically a skid-mounted control system for both heating and cooling. Background Technology

[0002] In oil refinery areas, office buildings need to maintain a suitable temperature year-round, requiring heating in winter and cooling in summer. Traditional systems often involve separate heating and cooling equipment, resulting in large footprints, high investment, and complex control. Heat transfer oil, as a heat transfer medium, possesses excellent high-temperature stability and high heat transfer efficiency. Combining it with a demineralized water system to achieve dual-purpose operation would significantly improve system economy and reliability. Currently, there is a lack of highly integrated, intelligently controlled, and seasonally switchable skid-mounted oil-cooled control systems. Utility Model Content

[0003] The purpose of this utility model is to provide a skid-mounted device for a dual-purpose oil-cooled control system for heating and cooling, which integrates the functions of heating in winter and cooling in summer, and achieves unattended operation through intelligent control, thereby solving the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a skid-mounted control system for both heating and cooling, comprising a hot oil side system, a demineralized water makeup side system, a demineralized water side system, a heating and cooling side system, a cooling tower system, and an intelligent control cabinet; the hot oil side system includes a fully welded plate heat exchanger, whose hot oil outlet is sequentially connected to a hot oil outlet shut-off valve and a first pressure sensor PT01 and a first temperature sensor TE01, and whose hot oil inlet is sequentially connected to a hot oil inlet shut-off valve and a second pressure sensor PT02 and a second temperature sensor TE02; the inlet of the hot oil circulation pump CP-101 is connected to the hot oil circulation pump via a manual shut-off valve. The oil source is connected, and the outlet is connected to the first Y-type filter via a manual shut-off valve after the hot oil circulation pump, and then connected to the hot oil inlet pipeline via the first manual shut-off valve; the demineralized water makeup system includes a pressure stabilizing tank, whose inlet is connected to an external water source via a water tank inlet solenoid valve TV001 and two manual shut-off butterfly valves for the demineralized water inlet; the outlet of the pressure stabilizing tank is sequentially connected to the Y-type filter before the demineralized water makeup pump, the manual shut-off butterfly valve before the demineralized water makeup pump, and the demineralized water makeup pump CP-102, and the outlet of the makeup pump is connected to the demineralized water circulation pipeline; the demineralized water side system includes a demineralized water internal circulation pump CP-103, whose outlet is equipped with a demineralization system. A manually shut-off butterfly valve is installed before the water internal circulation pump, and a manually shut-off butterfly valve and a Y-type filter for the demineralized water pipeline are installed at the inlet. A closed-loop cooling tower control circulation pump CP-104 is connected in parallel with the demineralized water internal circulation pump. A fourth pressure sensor PT04 and a fourth temperature sensor TE04 are installed at the inlet of the demineralized water pipeline, and a third pressure sensor PT03 and a third temperature sensor TE03 are installed at the outlet. A third electric regulating valve TCV003 and a fourth electric regulating valve TCV004 are respectively installed on the main outlet pipelines of the two pumps, and an electric drain valve TV005 is installed on the low-level drain pipe of the system. The heating and cooling side system includes a first coil fan 1 to... The sixth coil fan 6 has a fifth pressure sensor PT05, a fifth temperature sensor TE05, and a first electric regulating valve TCV001 on its inlet pipe, and a sixth pressure sensor PT06, a sixth temperature sensor TE06, and a second electric regulating valve TCV002 on its outlet pipe; the cooling tower system includes cooling tower fan 1, cooling tower fan 2, and cooling tower antifreeze electric heater CT01, which are matched with the closed cooling tower control circulation pump CP-104; the intelligent control cabinet integrates a PLC control system and a touch screen display, and is electrically connected to each sensor, valve, pump, and fan for automatic system control and parameter setting.

[0005] Preferably, in the hot oil side system, the hot oil circulation pump CP-101 is connected to the hot oil side of the fully welded plate heat exchanger through a pipeline to form a closed circulation loop.

[0006] Preferably, in the demineralized water replenishment system, the outlet of the pressure stabilizing tank is connected to the demineralized water replenishment pump CP-102, and the outlet of the replenishment pump is connected to the demineralized water internal circulation system to achieve constant pressure water replenishment.

[0007] Preferably, in the demineralized water side system, the demineralized water internal circulation pump CP-103 and the closed cooling tower control circulation pump CP-104 are connected in parallel, and the seasonal mode switching is realized through the third electric regulating valve TCV003 and the fourth electric regulating valve TCV004.

[0008] Preferably, in the heating and cooling side system, the first to sixth coil fans are connected to the demineralized water side system through pipelines to form a closed loop for transporting heat or cold.

[0009] Preferably, the intelligent control cabinet automatically adjusts the start-up, shutdown, and operating frequencies of the hot oil circulation pump, demineralized water replenishment pump, internal circulation pump, cooling tower circulation pump, and fan by detecting data from various sensors.

[0010] The beneficial effects of this utility model are as follows: (1) This utility model utilizes the efficient combination of heat transfer oil circulation system, demineralized water system and cooling tower system to directly utilize process waste heat or external energy. It can provide heating for buildings in winter and cooling in summer, realizing the integrated operation of heating and cooling modes throughout the year. It significantly saves the equipment investment and land area required to set up heating and cooling systems separately, and reduces the initial construction cost and space requirements.

[0011] (2) This utility model integrates control through intelligent control cabinet, which can automatically adjust the operating status of each water pump, fan and electric valve, and realize high-precision control of outlet water temperature, pressure and flow based on real-time feedback from multiple temperature and pressure sensors, ensuring that the system can operate stably and reliably under different seasons and load conditions, achieving a near-unattended automation level, and improving the overall control quality and operational reliability.

[0012] (3) The present invention adopts a modular skid design, which integrates heat exchanger, pump group, valve group, control cabinet, etc., making it convenient for transportation, on-site installation and subsequent maintenance. Its operation strategy makes full use of energy and avoids ineffective energy waste, while achieving the goals of saving electricity and heat. It is a new type of heating and cooling supply solution with high integration, economic operation and environmental benefits. Attached Figure Description

[0013] Figure 1 This is a system schematic diagram of the present invention; The components include: 1. First coil fan; 2. Second coil fan; 3. Third coil fan; 4. Fourth coil fan; 5. Fifth coil fan; 6. Sixth coil fan; 7. Fifth pressure sensor PT05; 8. Fifth temperature sensor TE05; 9. First electric regulating valve TCV001; 10. Second electric regulating valve TCV002; 11. Third electric regulating valve TCV003; 12. Sixth pressure sensor PT06; 13. Sixth temperature sensor TE06; 14. 15. Fourth pressure sensor PT04; 16. Fourth temperature sensor TE04; 17. Fourth electric regulating valve TCV004; 18. Electric drain valve TV005; 19. Cooling tower #1 fan; 20. Cooling tower #2 fan; 21. Cooling tower antifreeze electric heater CT01; 22. Cooling tower reciprocating circulation pump CP104; 23. Manual shut-off butterfly valve before the demineralized water internal circulation pump; 24. Demineralized water internal circulation pump system CP103; 25. Manual shut-off butterfly valve after the demineralized water internal circulation pump; 5. Y-type filter for demineralized water pipeline; 26. Makeup pump CP102 for demineralized water system; 27. Y-type filter before demineralized water makeup pump; 28. Manual shut-off butterfly valve before demineralized water makeup pump; 29. ​​Third pressure sensor PT03; 30. Third temperature sensor TE03; 31. Manual shut-off butterfly valve for demineralized water pipeline; 32. Fully welded plate heat exchanger; 33. First pressure sensor PT01; 34. First temperature sensor TE01; 35. Hot oil outlet shut-off valve; 36. 37. First manual shut-off butterfly valve for brine inlet; 38. Solenoid valve TV001 for water tank inlet; 39. Second manual shut-off butterfly valve for demineralized water inlet; 40. Pressure stabilizing tank; 41. Manual shut-off valve before hot oil circulation pump; 42. Hot oil circulation pump CP101; 43. Manual shut-off valve after hot oil circulation pump; 44. First Y-type filter; 45. First manual shut-off valve; 46. Second pressure sensor PT02; 47. Second temperature sensor TE02; 48. Hot oil inlet shut-off valve; 49. Intelligent control cabinet. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings.

[0015] like Figure 1 As shown, in the hot oil side system, the hot oil circulation pump CP-101 41 pushes the heat transfer oil through the fully welded plate heat exchanger 32. The hot oil outlet is connected in sequence to the hot oil outlet shut-off valve 35, the first pressure sensor PT01 33 and the first temperature sensor TE01 34. The hot oil inlet is connected in sequence to the hot oil inlet shut-off valve 47, the second pressure sensor PT02 45 and the second temperature sensor TE02 46 to monitor the oil circuit status in real time.

[0016] In the demineralized water makeup system, the inlet of the pressure stabilizing tank 39 is connected to an external water source through the water tank inlet solenoid valve TV001 37, the first manual shut-off butterfly valve 36 of the demineralized water inlet, and the second manual shut-off butterfly valve 38 of the demineralized water inlet; the outlet of the pressure stabilizing tank is connected in sequence to the Y-type filter 27 before the demineralized water makeup pump, the manual shut-off butterfly valve 28 before the demineralized water makeup pump, and the demineralized water makeup pump CP-102 26 to maintain stable system pressure.

[0017] In the demineralized water system, the demineralized water internal circulation pump CP-103 23 and the closed-loop cooling tower control circulation pump CP-104 21 are connected in parallel. Seasonal switching is achieved through the third electric regulating valve TCV003 11 and the fourth electric regulating valve TCV004 16: the internal circulation pump is activated for heating in winter, and the cooling tower is activated for cooling in summer. The demineralized water pipeline inlet is equipped with a fourth pressure sensor PT04 14 and a fourth temperature sensor TE04 15, and the outlet is equipped with a third pressure sensor PT03 29 and a third temperature sensor TE03 30.

[0018] In the heating and cooling system, the inlet pipes of the first coil fan 1 to the sixth coil fan 6 are equipped with a fifth pressure sensor PT05 7, a fifth temperature sensor TE05 8 and a first electric regulating valve TCV001 9, and the outlet pipes are equipped with a sixth pressure sensor PT06 12, a sixth temperature sensor TE06 13 and a second electric regulating valve TCV002 10 to precisely control the air supply temperature.

[0019] The cooling tower system includes cooling tower #1 fan 18, cooling tower #2 fan 19 and cooling tower antifreeze electric heater CT0120, and is equipped with closed cooling tower control circulation pump CP-104 21.

[0020] The intelligent control cabinet 48 integrates all detection and control functions. Parameters can be set via a touch screen to achieve fully automatic system operation and remote monitoring.

[0021] This invention achieves efficient, reliable, and intelligent year-round climate regulation through the above structure, and is particularly suitable for the heating and cooling needs of industrial buildings such as oil refineries.

[0022] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, based on the technical teachings provided by this utility model and as common knowledge in the field of hydraulics, other equivalent modifications and improvements can be made, and these should also be considered within the scope of protection of this utility model.

Claims

1. A skid-mounted device for a dual-purpose heating and cooling oil-cooled control system, characterized in that, It includes a hot oil side system, a demineralized water makeup side system, a demineralized water side system, a heating and cooling side system, a cooling tower system, and an intelligent control cabinet (48). The hot oil side system includes a fully welded plate heat exchanger (32), whose hot oil outlet is connected in sequence to a hot oil outlet shut-off valve (35) and a first pressure sensor PT01 (33) and a first temperature sensor TE01 (34), and whose hot oil inlet is connected in sequence to a hot oil inlet shut-off valve (47) and a second pressure sensor PT02 (45) and a second temperature sensor TE02 (46); the inlet of the hot oil circulation pump CP-101 (41) is connected to the oil source through a manual shut-off valve (40) before the hot oil circulation pump, and the outlet is connected to a first Y-type filter (43) through a manual shut-off valve (42) after the hot oil circulation pump, and is connected to the hot oil inlet pipeline through a first manual shut-off valve (44); The demineralized water supply system includes a pressure stabilizing tank (39), whose inlet is connected to an external water source through a water tank inlet solenoid valve TV001 (37), a first manual shut-off butterfly valve (36) for demineralized water inlet, and a second manual shut-off butterfly valve (38) for demineralized water inlet; the outlet of the pressure stabilizing tank is connected in sequence to a Y-type filter (27) before the demineralized water supply pump, a manual shut-off butterfly valve (28) before the demineralized water supply pump, and a demineralized water supply pump CP-102 (26), and the outlet of the water supply pump is connected to the demineralized water circulation pipeline; The demineralized water side system includes a demineralized water internal circulation pump CP-103 (23), which is equipped with a manual shut-off butterfly valve (22) before the demineralized water internal circulation pump at its outlet, a manual shut-off butterfly valve (24) after the demineralized water internal circulation pump at its inlet, and a demineralized water pipeline Y-type filter (25); a closed cooling tower control circulation pump CP-104 (21) is connected in parallel with the demineralized water internal circulation pump; a fourth pressure sensor PT04 (14) and a fourth temperature sensor TE04 (15) are provided at the inlet of the demineralized water pipeline, and a third pressure sensor PT03 (29) and a third temperature sensor TE03 (30) are provided at the outlet; a third electric regulating valve TCV003 (11) and a fourth electric regulating valve TCV004 (16) are respectively provided on the main pipelines at the outlets of the two pumps, and an electric drain valve TV005 (17) is provided on the low-level drain pipe of the system; The heating and cooling side system includes a first coil fan (1) to a sixth coil fan (6), the inlet pipe of which is equipped with a fifth pressure sensor PT05 (7), a fifth temperature sensor TE05 (8) and a first electric regulating valve TCV001 (9), and the outlet pipe is equipped with a sixth pressure sensor PT06 (12), a sixth temperature sensor TE06 (13) and a second electric regulating valve TCV002 (10). The cooling tower system includes cooling tower No. 1 fan (18), cooling tower No. 2 fan (19) and cooling tower antifreeze electric heater CT01 (20), which are matched with the closed cooling tower control circulation pump CP-104 (21); The intelligent control cabinet (48) integrates a PLC control system and a touch screen, and is electrically connected to various sensors, valves, pumps and fans for automatic system control and parameter setting.

2. The skid-mounted device for a dual-purpose heating and cooling oil-cooled control system according to claim 1, characterized in that: In the hot oil side system, the hot oil circulation pump CP-101 (41) is connected to the hot oil side of the fully welded plate heat exchanger (32) through a pipeline to form a closed circulation loop.

3. A skid-mounted device for a dual-purpose heating and cooling oil-cooled control system according to claim 1 or 2, characterized in that: In the demineralized water replenishment system, the outlet of the pressure stabilizing tank (39) is connected to the demineralized water replenishment pump CP-102 (26), and the outlet of the replenishment pump is connected to the demineralized water internal circulation system to achieve constant pressure water replenishment.

4. The skid-mounted device for a dual-purpose heating and cooling oil-cooled control system according to claim 3, characterized in that: In the demineralized water side system, the demineralized water internal circulation pump CP-103 (23) and the closed cooling tower control circulation pump CP-104 (21) are connected in parallel, and the seasonal mode switching is realized through the third electric regulating valve TCV003 (11) and the fourth electric regulating valve TCV004 (16).

5. The skid-mounted device for a dual-purpose heating and cooling oil-cooled control system according to claim 4, characterized in that: In the heating and cooling side system, the first coil fan (1) to the sixth coil fan (6) are connected to the demineralized water side system through pipelines to form a closed loop for transporting heat or cold.

6. The skid-mounted device for a dual-purpose heating and cooling oil-cooled control system according to claim 5, characterized in that: The intelligent control cabinet (48) automatically adjusts the start-up and shutdown frequency of the hot oil circulation pump, demineralized water replenishment pump, internal circulation pump, cooling tower circulation pump and fan by detecting data from various sensors.

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