Hydrogen detonation combustion mold temperature controller

Abstract

The utility model discloses a hydrogen detonation combustion mold temperature controller which comprises a shell, and the interior of the shell is divided into a combustion heat exchange area and a physical heat exchange area through a partition plate. The combustion heat exchange area comprises a hydrogen detonation combustor, a high-temperature heat exchanger and a low-temperature heat exchanger which are sequentially connected through a hot fluid pipeline; the physical heat exchange area comprises a heat conduction oil pump and a separator; a heat-conducting medium pipeline of the high-temperature heat exchanger is connected with external first heat utilization equipment, the heat-conducting oil pump and the separator are arranged on the heat-conducting medium pipeline of the high-temperature heat exchanger, and a heat-conducting medium pipeline of the low-temperature heat exchanger is connected with external second heat utilization equipment. The utility model provides a hydrogen detonation combustion mold temperature controller, which utilizes a mature hydrogen detonation combustor and an integrated heat exchanger group to realize stable combustion of pure hydrogen and stable and efficient output of heat of a heat-conducting medium. Compared with a traditional fuel gas mold temperature controller, carbon emission and NOx emission can be reduced.

Description

Technical Field

[0001] The utility model belongs to the field of chemical equipment, in particular to a hydrogen detonation combustion mold temperature controller. Background Art

[0002] The mold temperature controller, also known as the mold temperature controller, was originally used in injection molds. Later, with the development of the machinery industry, it was used more and more widely. Now the mold temperature controller is generally divided into water temperature controller and oil temperature controller, and the temperature control accuracy is ±0.1 degrees Celsius. The gas mold temperature controller is mainly composed of a burner, a furnace, a waste heat recovery device, a circulating oil pump, an expansion, an oil tank, a chimney and a PLC control system. Traditional mold temperature controllers usually use natural gas or liquid petroleum gas as fuel, spray open flames in the furnace to heat the thermal oil, and the circulating oil pump drives the hot oil to circulate between the thermal oil boiler and the heat-using equipment to achieve the effect of heating and temperature control. However, natural gas or liquid petroleum gas usually produces carbon emissions or NOx during the combustion process, which is not friendly to the environment. Utility Model Content

[0003] The utility model aims to provide a hydrogen detonation combustion mold temperature controller in view of the defects of the prior art.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a hydrogen detonation combustion mold temperature controller, which includes a shell, and the interior is divided into a combustion heat exchange zone and a physical heat exchange zone by a partition plate; the combustion heat exchange zone includes a hydrogen detonation burner, a high-temperature heat exchanger and a low-temperature heat exchanger connected in sequence through a hot fluid pipeline; the physical heat exchange zone includes a heat transfer oil pump and a separator; the heat transfer medium pipeline of the high-temperature heat exchanger is connected to an external first heat-using device, the heat transfer oil pump and the separator are arranged on the heat transfer medium pipeline of the high-temperature heat exchanger, and the heat transfer medium pipeline of the low-temperature heat exchanger is connected to an external second heat-using device.

[0005] Furthermore, the partition plate is made of heat-insulating and explosion-proof material.

[0006] Furthermore, the combustion heat exchange zone is also provided with a fan, which is arranged at the air inlet of the hydrogen detonation burner.

[0007] Furthermore, a hydrogen meter and a hydrogen valve are provided on the hydrogen inlet pipeline of the hydrogen detonation burner.

[0008] Furthermore, the combustion heat exchange area is also provided with an alarm and an exhaust fan.

[0009] Furthermore, a heat exchange medium pump and a heat exchange medium valve are provided on the heat transfer medium pipeline of the low-temperature heat exchanger.

[0010] Furthermore, an expansion oil tank is also provided on the heat transfer medium pipeline of the high-temperature heat exchanger.

[0011] Furthermore, the high temperature heat exchanger adopts a plate-fin heat exchanger.

[0012] Furthermore, the low temperature heat exchanger adopts a fin heat exchanger, a shell and tube heat exchanger or a plate heat exchanger.

[0013] Furthermore, the physical heat exchange area is also provided with a PLC control device.

[0014] The utility model proposes a hydrogen detonation combustion mold temperature controller, which uses a mature hydrogen detonation burner and an integrated heat exchanger group to achieve stable combustion of pure hydrogen and stable and efficient output of heat from the heat transfer medium. Compared with traditional gas-fired mold temperature controllers, it can reduce carbon emissions and NOx emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of the hydrogen detonation combustion mold temperature controller of the embodiment. DETAILED DESCRIPTION

[0016] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0017] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or apparatuses.

[0018] A hydrogen detonation combustion mold temperature controller, such as Figure 1 As shown, a hydrogen detonation burner is coupled with a heat exchanger group and a heat transfer oil circulation system is configured to form a hydrogen detonation combustion mold temperature controller to achieve pure hydrogen combustion and stable external heat supply.

[0019] The mold temperature controller is divided into two areas by a partition plate: combustion heat exchange area 1 and physical heat exchange area 2. A partition plate 3 is used to physically isolate the two areas.

[0020] Combustion heat exchange zone: set up fan 4, hydrogen detonation burner 5, high temperature heat exchanger 6, low temperature heat exchanger 7, alarm 8, hydrogen flow meter 9, exhaust fan 10, valves and pipelines, etc. Generally, the hydrogen inlet is set in the combustion heat exchange zone.

[0021] Physical heat exchange area: heat transfer oil pump 11, separator 12, expansion oil tank 13, temperature sensor, PLC control 14, valves and pipelines are set. Generally, the interface of heat-using equipment is set in the physical heat exchange area.

[0022] The heat transfer medium pipeline of the high temperature heat exchanger is connected to the first external heat user 15, using the first heat transfer medium. The heat transfer medium pipeline of the low temperature heat exchanger is connected to the second external heat user 16, using the second heat transfer medium.

[0023] The partition plate is generally made of heat-insulating and explosion-proof materials, such as steel + thermal insulation materials. This ensures that the high-temperature areas of the flue gas are on the same side, the combustion and heat exchange areas are highly integrated, and the heat loss is small; the volume of the combustion and heat exchange areas is minimized, and when hydrogen leaks, the replacement speed is faster and safer.

[0024] A shell 17 is arranged outside the hydrogen detonation combustion mold temperature controller.

[0025] In order to achieve efficient use of hot air, two-stage heat exchange is adopted. Plate-fin heat exchangers are generally used on the high-temperature heat exchange side, and finned heat exchange tubes are generally used on the low-temperature heat exchange side. However, other heat exchange types, such as shell and tube and plate heat exchangers, are not excluded. The hot air at the burner outlet first enters one side of the high-temperature heat exchanger, and the other cavity of the high-temperature heat exchanger uses the first heat transfer (heat transfer oil) to take away the heat of the hot air. After heat exchange, the medium and low temperature hot air enters the low-temperature heat exchanger again, and the other cavity of the low-temperature heat exchanger uses the second heat transfer medium (circulating water or other heat exchange medium). Finally, after most of the heat of the hot air is absorbed, it is discharged to the atmosphere through the opening of the mold temperature controller shell.

[0026] In order to achieve low heat loss of the system, the detonation burner is generally directly connected to the high-temperature heat exchanger, and the rear end of the high-temperature heat exchanger is directly connected to the low-temperature heat exchanger. They can be connected by flange, sleeve, or welding. Preferably, the detonation burner and the high-temperature heat exchanger are connected by flange, and the high-temperature heat exchanger and the low-temperature heat exchanger are connected by welding. Generally, the detonation burner, high-temperature heat exchanger and low-temperature heat exchanger are externally insulated.

[0027] During normal operation, open valves 4, 5, 2, and 3, and close valve 6, so that the first and second heat users are connected to the circulating heat transfer oil system. If the second heat user is not in use, close valves 2 and 3. First, turn on the heat transfer oil pump to circulate the heat transfer oil in the system. Then turn on the fan. If there is no fault, open the hydrogen inlet valve 1, and hydrogen enters the detonation burner for detonation combustion. The hot gas passes through the high-temperature and low-temperature heat exchange sides in turn, transfers the heat to the first and second heat transfer media, and then is discharged from the mold temperature controller at near room temperature.

[0028] First, heat transfer temperature and flow control: a temperature sensor T1 is set at the outlet of the heat transfer oil on the high-temperature heat exchange side, and a temperature sensor T2 is set at the outlet of the gas on the low-temperature heat exchange side, which is interlocked with the hydrogen flowmeter F1 of the detonation burner to control the temperature of the heat transfer oil. The instantaneous response characteristics of the detonation burner are used to accurately adjust the temperature. When the required heat transfer oil temperature is high, the hydrogen flow rate is increased, and vice versa. The error range of the heat transfer oil temperature is generally controlled within ±1°C.

[0029] Second heat transfer medium temperature and flow control: If the temperature monitored by T2 is higher than a certain value of normal temperature (generally set to 0-40℃), it indicates that the system hydrogen calorific value cannot fully exchange heat at this time. At this time, the system detects whether low-temperature heat exchange is used (valve 2 and valve 3 are open). If not, ignore this state; if yes, determine again whether the flow meter F2 has a reading. If not, issue a warning: the heat-using equipment on the low-temperature heat exchange side is abnormal; if yes, it indicates that the second heat-using equipment can increase the heat load or reduce the hydrogen flow.

[0030] High / low temperature heat output ratio adjustment: When the hydrogen supply is confirmed, the total calorific value is fixed. At this time, if the two heat-using equipment have a certain proportion of heat output requirements, the flow of the heat transfer oil pump and the heat exchange medium pump can be adjusted.

[0031] The physical heat exchange area is similar to that of a conventional mold temperature controller.

[0032] When shutting down, close valve 4, valve 5, valve 2, valve 3, open valve 6, and close valve 1.

[0033] Rapid cooling function: To quickly cool the system thermal oil, close valves 4, 5, 2, and 3, open valve 6, and close valve 1. Start the thermal oil pump and the fan, and the cold air will take away the heat of the thermal oil through the high-temperature heat exchange side. If the exhaust port temperature is too high, cooling water can be passed through the low-temperature heat exchange side to reduce the air temperature.

[0034] When the hydrogen alarm in the combustion heat exchange area detects hydrogen leakage, the hydrogen inlet valve 1 is closed and the exhaust fan is forced to open to ensure that there is no hydrogen accumulation in the combustion heat exchange area in a short time. The alarm is set at the place where hydrogen is easy to accumulate, and at least one alarm is set.

[0035] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A hydrogen detonation combustion mold temperature controller, characterized in that: The hydrogen detonation combustion mold temperature controller includes an outer shell, the interior of which is divided into a combustion heat exchange zone and a physical heat exchange zone by a partition plate; the combustion heat exchange zone includes a hydrogen detonation burner, a high-temperature heat exchanger and a low-temperature heat exchanger which are connected in sequence through a hot fluid pipeline; the physical heat exchange zone includes a heat transfer oil pump and a separator; the heat transfer medium pipeline of the high-temperature heat exchanger is connected to an external first heat-using device, the heat transfer oil pump and the separator are arranged on the heat transfer medium pipeline of the high-temperature heat exchanger, and the heat transfer medium pipeline of the low-temperature heat exchanger is connected to an external second heat-using device.

2. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: The partition plate is made of heat-insulating and explosion-proof material.

3. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: The combustion heat exchange zone is also provided with a fan, which is arranged at the air inlet of the hydrogen detonation burner.

4. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: A hydrogen meter and a hydrogen valve are arranged on the hydrogen inlet pipeline of the hydrogen detonation burner.

5. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: The combustion heat exchange zone is also provided with an alarm and an exhaust fan.

6. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: A heat exchange medium pump and a heat exchange medium valve are arranged on the heat transfer medium pipeline of the low-temperature heat exchanger.

7. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: An expansion oil tank is also provided on the heat transfer medium pipeline of the high temperature heat exchanger.

8. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: The high temperature heat exchanger is a plate-fin heat exchanger.

9. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: The low-temperature heat exchanger is a fin heat exchanger, a shell and tube heat exchanger or a plate heat exchanger.

10. The hydrogen detonation combustion mold temperature controller according to claim 1, characterized in that: The physical heat exchange zone is also provided with a PLC control device.

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