Energy-saving and environment-friendly conduction oil and steam system

Abstract

The utility model discloses an energy-saving and environment-friendly conduction oil and steam system which comprises a conduction oil boiler and a steam generator, the conduction oil boiler is connected with the steam generator through an oil outlet pipe and an oil return pipe, a hot oil circulating pump and a three-way electromagnetic valve are arranged on the oil outlet pipe, and a heat exchanger and an oil storage tank are arranged on the oil return pipe; a water inlet pipe connected with the softened water tank is arranged on a water inlet of the heat exchanger, a water outlet pipe connected with a water inlet of the steam generator is arranged on a water outlet, and a water return pipe communicated with the softened water tank is arranged on the water outlet pipe; a bypass pipe is arranged at one end, close to the steam generator, of the oil return pipe; the other end of the bypass pipe is connected with a second outlet of the three-way electromagnetic valve; the water inlet pipe, the water outlet pipe and the water return pipe are provided with a first valve, a second valve and a third valve respectively, and the water return pipe is further provided with a heat exchange pump. According to the utility model, the heat of the conduction oil is recycled, so that steam can be efficiently prepared in an energy-saving manner during working, and the temperature of the conduction oil can be quickly reduced in an energy-saving manner when the device does not work.

Description

Technical Field

[0001] The utility model relates to the technical field of boilers, in particular to an energy-saving and environmentally friendly heat-conducting oil and steam system. Background Art

[0002] In the existing technology, thermal oil boilers raise the temperature of the heat transfer oil to 250℃-300℃, and then generate steam for use in the workshop through a steam generator. However, due to structural limitations, the following problems exist:

[0003] 1. During operation, tap water is directly processed by the water softener to form soft water for use in the steam generator. Due to the low water temperature, the time it takes for the water to absorb the heat of the thermal oil in the evaporator and heat up is increased, which not only increases the speed of the pump, but also the heat of the thermal oil after heat exchange is not fully utilized and flows back to the boiler, thereby increasing energy consumption.

[0004] 2. When the thermal oil stops running, it must be reduced to below 100°C before it can be shut down safely. Without an external cooling source, it takes 100 hours for the 300°C thermal oil to drop below 100°C, which results in a long time and high energy consumption.

[0005] Therefore, it is necessary to develop an energy-saving and environmentally friendly thermal oil and steam system that can efficiently and energy-savingly prepare steam when working by recycling the heat of the thermal oil, and quickly and energy-savingly reduce the temperature of the thermal oil when not working. Utility Model Content

[0006] In order to solve the above problems, the technical solutions adopted by the present invention are as follows:

[0007] An energy-saving and environmentally friendly thermal oil and steam system, comprising a thermal oil boiler and a steam generator, characterized in that an oil outlet of the thermal oil boiler is provided with an oil outlet pipe connected to the oil inlet of the steam generator, an oil return port is provided with an oil return pipe connected to the oil outlet of the steam generator, a hot oil circulation pump and a three-way solenoid valve are provided on the oil outlet pipe, and a heat exchanger and an oil storage tank are provided on the oil return pipe;

[0008] The water inlet of the heat exchanger is provided with a water inlet pipe connected to the soft water tank, the water outlet is provided with a water outlet pipe connected to the water inlet of the steam generator, and the water outlet pipe is provided with a return pipe connected to the soft water tank;

[0009] The three-way solenoid valve is a valve body with one inlet and two outlets. A bypass pipe is provided at one end of the oil return pipe close to the steam generator, and the other end of the bypass pipe is connected to the second outlet of the three-way solenoid valve;

[0010] The water inlet pipe, the water outlet pipe and the return pipe are respectively provided with a first valve, a second valve and a third valve, and the return pipe is also provided with a heat exchange pump.

[0011] Preferably, a first temperature sensor is provided on the oil outlet pipe between the thermal oil boiler and the three-way solenoid valve.

[0012] Preferably, the oil return pipe is provided with a second temperature sensor between the oil storage tank and the heat exchanger.

[0013] Preferably, the oil storage tank is provided with a first circulation pump.

[0014] Preferably, a second circulation pump is provided on the soft water tank.

[0015] Preferably, it further comprises a water softening device, and the soft water tank is connected to the tap water pipe through the water softening device.

[0016] Preferably, the first valve, the second valve and the third valve are solenoid valves.

[0017] Preferably, the soft water tank is a box with heat preservation function.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. When the system is operating normally, the utility model recovers the heat of the heat-conducting oil discharged from the steam generator to heat the soft water entering the steam generator to form high-temperature soft water, thereby reducing the heating time of the soft water in the steam generator and realizing the hot oil circulation pump to prepare steam with high efficiency and energy saving at a lower speed.

[0020] 2. When the system stops working, under the action of the hot oil circulation pump and the heat exchange pump, the heat of the thermal oil is absorbed by soft water to form high-temperature soft water for storage or use in other processes. This not only realizes the recovery and utilization of the heat of the thermal oil, but also quickly reduces the temperature of the thermal oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural diagram of the utility model;

[0022] Among them: thermal oil boiler 1, steam generator 2, hot oil circulation pump 3, three-way solenoid valve 4, heat exchanger 5, oil storage tank 6, soft water tank 7, heat exchange pump 8, first temperature sensor 9, first circulation pump 11, second circulation pump 12, second temperature sensor 13, softening device 14, oil outlet pipe 10, oil return pipe 20, water inlet pipe 30, water outlet pipe 40, return pipe 50, bypass pipe 60, first valve 100, second valve 200, and third valve 300. DETAILED DESCRIPTION

[0023] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to facilitate a more thorough and comprehensive understanding of the disclosure of the present invention.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," "upper," "lower," "front," "rear," and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended only to describe specific embodiments and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0026] Below, the present invention is further described with reference to the accompanying drawings and specific embodiments:

[0027] like Figure 1 As shown, an energy-saving and environmentally friendly thermal oil and steam system includes a thermal oil boiler 1 and a steam generator 2. The oil outlet of the thermal oil boiler 1 is provided with an oil outlet pipe 10 connected to the oil inlet of the steam generator 2, and the oil return port is provided with an oil return pipe 20 connected to the oil outlet of the steam generator 2. A hot oil circulation pump 3 and a three-way solenoid valve 4 are provided on the oil outlet pipe 10, and a heat exchanger 5 and an oil storage tank 6 are provided on the oil return pipe 20.

[0028] The water inlet of the heat exchanger 5 is provided with a water inlet pipe 30 connected to the soft water tank 7, and the water outlet is provided with a water outlet pipe 40 connected to the water inlet of the steam generator 2, and the water outlet pipe 40 is provided with a return pipe 50 connected to the soft water tank 7;

[0029] The three-way solenoid valve 4 is a valve body with one inlet and two outlets. A bypass pipe 60 is provided at one end of the oil return pipe 20 close to the steam generator 2. The other end of the bypass pipe 60 is connected to the second outlet of the three-way solenoid valve 4.

[0030] The water inlet pipe 30 , the water outlet pipe 40 and the water return pipe 50 are respectively provided with a first valve 100 , a second valve 200 and a third valve 300 . The water return pipe 50 is also provided with a heat exchange pump 8 .

[0031] In this embodiment, when the system is working, the thermal oil boiler 1 and the steam generator 2 are started, the second outlet of the three-way solenoid valve 4 is closed and the first outlet is opened, the first valve 100 and the second valve 200 are opened, the third valve 300 is closed, and the heat exchange pump 8 is not started. The heated thermal oil enters the steam generator 2 and the heat exchanger 5 in sequence under the action of the hot oil circulation pump 3, loses heat, and then flows back to the thermal oil boiler 1 from the oil storage tank 6. During this process, the 300°C thermal oil enters the steam generator 2 and exchanges heat with soft water to form thermal oil at 100°C to 200°C. Then, the 100°C to 200°C thermal oil enters the heat exchanger 5, so that the room temperature soft water passes through the heat exchanger 5 to form high temperature soft water and enters the steam generator 2. Then, the 300°C thermal oil quickly heats the high temperature soft water and evaporates it to form steam.

[0032] When the thermal oil boiler 1 is not working, the thermal oil boiler 1 and the steam generator 2 stop working, the first outlet of the three-way solenoid valve 4 is closed and the second outlet is opened, the first valve 100 and the third valve 300 are opened, the second valve 200 is closed, and the heat exchange pump 8 is started. The 300°C thermal oil circulates through the heat exchanger 5 under the action of the hot oil circulation pump 3. At the same time, room temperature soft water circulates into the heat exchanger 5 under the action of the heat exchange pump 8 to absorb the heat of the thermal oil, and then forms high-temperature soft water and is stored in the soft water tank 7 for use in other processes or in the later production of steam.

[0033] In the above structure, when the system is operating normally, the heat of the thermal oil discharged from the steam generator 2 is recovered to heat the soft water entering the steam generator 2 to form high-temperature soft water, thereby reducing the heating time of the soft water in the steam generator 2, and realizing the hot oil circulation pump 3 to enable the steam generator 2 to prepare steam efficiently and energy-savingly at a lower speed; when the system stops working, under the action of the hot oil circulation pump 3 and the heat exchange pump 8, the soft water absorbs the heat of the thermal oil to form high-temperature soft water for storage or use in other processes, until the thermal oil drops below 100°C, the hot oil circulation pump 3 and the heat exchange pump 8 stop, which not only realizes the recovery and utilization of the heat of the thermal oil, but also quickly reduces the temperature of the thermal oil, thereby making the system highly efficient and energy-saving.

[0034] Further, such as Figure 1As shown, in order to accurately detect the temperature of the thermal oil in the oil outlet pipe 10, a first temperature sensor 9 is provided on the oil outlet pipe 10 between the thermal oil boiler 1 and the three-way solenoid valve 4. When the thermal oil temperature in the oil outlet pipe 10 is detected to be lower than the required temperature value, the first outlet of the three-way solenoid valve 4 is closed and the second outlet is opened, and the thermal oil flows through the bypass pipe 60 and the return oil pipe 20 in turn through the heat exchanger 5 and the oil storage tank 6 and then returns to the boiler; when the detected temperature is higher than the required temperature value, the second outlet of the three-way solenoid valve 4 is closed and the first outlet is opened, and the thermal oil enters the steam generator 2, the heat exchanger 5 and the oil storage tank 6 in turn and then returns to the thermal oil boiler 1, thereby ensuring the normal operation of the temperature of the steam generator 2 and the effective recovery of the heat of the thermal oil.

[0035] Further, such as Figure 1 As shown, in order to monitor the temperature of the thermal oil after heat exchange in real time, the return oil pipe 20 is located between the oil storage tank 6 and the heat exchanger 5 and is provided with a second temperature sensor 13; the rotation speed of the hot oil circulation pump 3 and the heat exchange pump 8 can be accurately controlled according to the temperature to control the flow rate of the soft water and the thermal oil, thereby achieving efficient and energy-saving steam preparation.

[0036] Further, such as Figure 1 As shown, in order to make the temperature of the heat transfer oil in the oil storage tank 6 uniform, a first circulation pump 11 is provided on the oil storage tank 6.

[0037] Further, such as Figure 1 As shown, in order to make the temperature of the soft water in the soft water tank 7 uniform, a second circulation pump 12 is provided on the soft water tank 7.

[0038] Further, if Figure 1 As shown, in order to continuously provide soft water, a water softening device 14 is also included, and the soft water tank 7 is connected to the tap water pipe through the water softening device 14; the structure and working principle of the water softening device 14 are conventional technologies in the field and will not be repeated here.

[0039] Furthermore, the first valve 100 , the second valve 200 and the third valve 300 are solenoid valves.

[0040] In this embodiment, the solenoid valve has the advantages of fast response speed, good stability, and strong controllability, which greatly improves the on-off control stability of the water inlet pipe 30, the water outlet pipe 40, and the return pipe 50.

[0041] Furthermore, in order to improve the thermal insulation effect of soft water and reduce heat loss, the soft water tank 7 is a box with thermal insulation function.

[0042] For those skilled in the art, various other corresponding changes and deformations can be made based on the technical solutions and concepts described above, and all of these changes and deformations should fall within the scope of protection of the claims of this utility model patent.

Claims

1. An energy-saving and environmentally friendly thermal oil and steam system, comprising a thermal oil boiler and a steam generator, characterized in that: The oil outlet of the thermal oil boiler is provided with an oil outlet pipe connected to the oil inlet of the steam generator, the oil return port is provided with an oil return pipe connected to the oil outlet of the steam generator, a hot oil circulation pump and a three-way solenoid valve are provided on the oil outlet pipe, and a heat exchanger and an oil storage tank are provided on the oil return pipe; The water inlet of the heat exchanger is provided with a water inlet pipe connected to the soft water tank, the water outlet is provided with a water outlet pipe connected to the water inlet of the steam generator, and the water outlet pipe is provided with a return pipe connected to the soft water tank; The three-way solenoid valve is a valve body with one inlet and two outlets. A bypass pipe is provided at one end of the oil return pipe close to the steam generator, and the other end of the bypass pipe is connected to the second outlet of the three-way solenoid valve; The water inlet pipe, the water outlet pipe and the return pipe are respectively provided with a first valve, a second valve and a third valve, and the return pipe is also provided with a heat exchange pump.

2. The energy-saving and environmentally friendly thermal oil and steam system according to claim 1, characterized in that: A first temperature sensor is provided on the oil outlet pipe between the thermal oil boiler and the three-way solenoid valve.

3. The energy-saving and environmentally friendly thermal oil and steam system according to claim 1, characterized in that: The oil return pipe is located between the oil storage tank and the heat exchanger and is provided with a second temperature sensor.

4. The energy-saving and environmentally friendly thermal oil and steam system according to claim 1, characterized in that: The oil storage tank is provided with a first circulation pump.

5. The energy-saving and environmentally friendly thermal oil and steam system according to claim 1, characterized in that: The soft water tank is provided with a second circulation pump.

6. The energy-saving and environmentally friendly thermal oil and steam system according to claim 1, characterized in that: It also includes a water softening device, and the soft water tank is connected to the tap water pipe through the water softening device.

7. The energy-saving and environmentally friendly thermal oil and steam system according to claim 1, characterized in that: The first valve, the second valve and the third valve are solenoid valves.

8. The energy-saving and environmentally friendly thermal oil and steam system according to claim 1, characterized in that: The soft water tank is a box with heat preservation function.

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