Energy-saving equipment preheating system

Abstract

The utility model relates to the field of preheating systems, in particular to an energy-saving equipment preheating system. The preheating system comprises a boiler, a first valve, a second valve, a condensate water recycling tank, a third valve, a first condensate water recycling pump, a second condensate water recycling pump, a pressure sensor and a PLC, the boiler is connected with an inlet of a device A through a first pipeline, the first valve is installed on the first pipeline, an outlet of the device A is connected with the condensate water recycling tank through a second pipeline, the second valve is installed on the second pipeline, and the pressure sensor is installed on the second pipeline. The condensate water recovery tank is connected with the boiler through a third pipeline, a first condensate water recovery pump is installed on the third pipeline, the condensate water recovery tank is connected with an inlet of the device B through a fourth pipeline, a third valve is installed on the fourth pipeline, and an outlet of the device B is connected with the condensate water recovery tank through a fifth pipeline. According to the utility model, the condensate water recovery tank is matched with a plurality of groups of pipelines provided with valves and recovery pumps, so that the consumption of preheating water and natural gas of equipment is reduced, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the field of preheating systems, in particular to an energy-saving equipment preheating system. Background Art

[0002] Some production equipment needs to be preheated during production and processing. The existing preheating method is to use natural gas to heat the water in the boiler, and then send the steam into the equipment for preheating. However, the existing equipment preheating system consumes a lot of water and natural gas. Utility Model Content

[0003] The technical problem to be solved by the utility model is: in order to solve the technical problem described in the background technology, the utility model provides an energy-saving equipment preheating system. Through the cooperation of the condensate recovery tank and the pipelines with valves and recovery pumps installed in the array, the use of equipment preheating water and natural gas is reduced, thereby saving costs.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] An energy-saving equipment preheating system comprises a boiler, a valve 1, a valve 2, a condensate recovery tank, a valve 3, a condensate recovery pump 1, a condensate recovery pump 2, a pressure sensor and a PLC. The boiler is connected to the inlet of equipment A through a pipeline 1, and a valve 1 is installed on the pipeline 1. The outlet of equipment A is connected to the condensate recovery tank through a pipeline 2, and a valve 2 is installed on the pipeline 2. The condensate recovery tank is connected to the boiler through a pipeline 3, and a condensate recovery pump 1 is installed on the pipeline 3. The condensate recovery tank is connected to the inlet of equipment B through a pipeline 4, and a valve 3 is installed on the pipeline 4. The outlet of equipment B is connected to the condensate recovery tank through a pipeline 5, and a condensate recovery pump 2 is installed on the pipeline 5. A pressure sensor is installed in the condensate recovery tank. The pressure sensor, the valve 1, the valve 2, the valve 3, the condensate recovery pump 1 and the condensate recovery pump 2 are all electrically connected to the PLC.

[0006] Specifically, the valve one is a PID proportional control valve.

[0007] Specifically, a liquid level meter 1 is installed in the boiler, and the liquid level meter 1 is electrically connected to the PLC.

[0008] Specifically, a second liquid level gauge is installed in the condensate recovery tank, and the second liquid level gauge is electrically connected to the PLC.

[0009] The beneficial effect of the utility model is that the utility model provides an energy-saving equipment preheating system. Through the cooperation of the condensate recovery tank and the pipelines with valves and recovery pumps installed in the array, the use of equipment preheating water and natural gas is reduced, thereby saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0011] Figure 1 It is a structural schematic diagram of the utility model;

[0012] In the figure, 1. Boiler, 2. Valve 1, 3. Valve 2, 4. Condensate recovery tank, 5. Valve 3, 6.

[0013] Condensate recovery pump 1, 7. Condensate recovery pump 2, 8. Equipment A, 9. Equipment B. DETAILED DESCRIPTION

[0014] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0015] Figure 1 It is a structural schematic diagram of the utility model.

[0016] As attached Figure 1 As shown, an energy-saving equipment preheating system includes a boiler 1, a valve 1 2, a valve 2 3, a condensate recovery tank 4, a valve 3 5, a condensate recovery pump 1 6, a condensate recovery pump 2 7, a pressure sensor, and a PLC. The boiler 1 is connected to the inlet of the equipment A8 through a pipeline 1, and a valve 1 2 is installed on the pipeline 1. The outlet of the equipment A8 is connected to the condensate recovery tank 4 through a pipeline 2, and a valve 2 3 is installed on the pipeline 2. The condensate recovery tank 4 is connected to the boiler 1 through a pipeline 3, and a condensate recovery pump 1 6 is installed on the pipeline 3. The condensate recovery tank 4 is connected to the inlet of the equipment B9 through a pipeline 4, and a valve 3 5 is installed on the pipeline 4. The outlet of the equipment B9 is connected to the condensate recovery tank 4 through a pipeline 5, and a condensate recovery pump 2 7 is installed on the pipeline 5. A pressure sensor is installed in the condensate recovery tank 4, and the pressure sensor, valve 1 2, valve 2 3, valve 3 5, condensate recovery pump 1 6, and condensate recovery pump 2 7 are all electrically connected to the PLC.

[0017] Valve 2 is a PID proportional control valve.

[0018] A liquid level meter 1 is installed in the boiler 1, and the liquid level meter 1 is electrically connected to the PLC.

[0019] A liquid level gauge 2 is installed in the condensate recovery tank 4, and the liquid level gauge 2 is electrically connected to the PLC.

[0020] The working method of the present application is: heating the boiler and the water in the boiler to generate steam. After valve 1 2 is opened, the steam in the boiler is sent to the equipment A8 that needs to be preheated to preheat the equipment A8. The condensed water and some flash steam generated after the water vapor reaches the equipment A8 are sent to the condensed water recovery tank 4 through valve 2 3. The pressure sensor transmits the pressure information in the condensed water recovery tank 4 to the PLC in real time. When the pressure value in the condensed water recovery tank 4 exceeds the preset value of the PLC, the PLC opens valve 3 5, and the steam in the condensed water recovery tank 4 will enter the equipment B9 to preheat the equipment B. The preheated condensed water in the equipment B is pumped into the condensed water recovery tank 4 by the condensed water recovery pump 2 7.

[0021] Liquid level meter 1 transmits the water level information in boiler 1 to PLC in real time, and liquid level meter 2 transmits the water level information in condensate recovery tank 4 to PLC in real time. PLC controls condensate recovery pump 1 6 to replenish condensate recovery tank 4 into boiler 1.

[0022] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without deviating from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. An energy-saving equipment preheating system, characterized in that: The invention comprises a boiler (1), a valve 1 (2), a valve 2 (3), a condensate recovery tank (4), a valve 3 (5), a condensate recovery pump 1 (6), a condensate recovery pump 2 (7), a pressure sensor, and a PLC. The boiler (1) is connected to the inlet of the device A (8) through a pipeline 1, the pipeline 1 is provided with a valve 1 (2), the outlet of the device A (8) is connected to the condensate recovery tank (4) through a pipeline 2, the pipeline 2 is provided with a valve 2 (3), the condensate recovery tank (4) is connected to the boiler (1) through a pipeline 3, and the pipeline A condensate recovery pump 1 (6) is installed on the third pipe, the condensate recovery tank (4) is connected to the inlet of the device B (9) through the fourth pipe, a valve 3 (5) is installed on the fourth pipe, the outlet of the device B (9) is connected to the condensate recovery tank (4) through the fifth pipe, a condensate recovery pump 2 (7) is installed on the fifth pipe, a pressure sensor is installed in the condensate recovery tank (4), and the pressure sensor, valve 1 (2), valve 2 (3), valve 3 (5), condensate recovery pump 1 (6), and condensate recovery pump 2 (7) are all electrically connected to the PLC.

2. The energy-saving equipment preheating system according to claim 1 is characterized in that: The valve one (2) is a PID proportional control valve.

3. The energy-saving equipment preheating system according to claim 1 is characterized in that: A liquid level meter 1 is installed in the boiler (1), and the liquid level meter 1 is electrically connected to the PLC.

4. The energy-saving equipment preheating system according to claim 1 is characterized in that: A second liquid level gauge is installed in the condensed water recovery tank (4), and the second liquid level gauge is electrically connected to the PLC.

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