Safe and fool-proof differential scanning calorimeter

Abstract

The utility model provides a safe fool-proof differential scanning calorimeter, including ice water machine control panel, instrument main body controller, water pump, ice water tank and crucible, ice water control panel is electrically connected with ice water tank and water pump, instrument main body controller is electrically connected with crucible, ice water tank is connected to the crucible through water pump, and the crucible is connected with the crucible through water pump. The device further comprises a relay, a direct-current module and a water flow sensing switch. The water flow sensing switch is arranged between the ice water tank and the crucible; the ice water machine control panel is electrically connected with the direct current module, and the direct current module is electrically connected to the coil control end of the relay through the water flow sensing switch; the normally open end of the relay is respectively connected with a power supply and an instrument main body controller, so that the phenomenon of overburning is avoided, and the safe operation of the differential scanning calorimeter is effectively protected.

Description

Technical Field

[0001] The utility model relates to a differential scanning calorimeter, in particular to a differential scanning calorimeter with safety anti-fooling function. Background Art

[0002] The working principle of the existing differential scanning calorimeter is as follows: put the PCB sample into the crucible inside the instrument, heat it by programmed curve heating, compare the temperature, heat flow and other parameters of the internal thermal change with the reference object, and realize the measurement of TG curing degree through software conversion calculation. The existing differential scanning calorimeter consists of two modules: the instrument main body and the cooling system. There are the following problems:

[0003] 1. When forgetting to turn on the cooling system first during operation or the water pipe falls off, it will cause the crucible to burn out; the crucible is the core unit component of the instrument, and the replacement and maintenance costs are relatively expensive;

[0004] 2. If not discovered in time, it may also cause a fire, posing a safety hazard. Content of the Utility Model

[0005] The technical problem to be solved by the utility model is to provide a differential scanning calorimeter with safety anti-fooling function, which can ensure that the phenomenon of overheating the pot will not occur, and effectively protect the safe operation of the differential scanning calorimeter.

[0006] The utility model is realized as follows: a differential scanning calorimeter with safety anti-fooling function includes an ice water machine control board, an instrument main body controller, a water pump, an ice water tank and a crucible. The ice water control board is electrically connected to the ice water tank and the water pump. The instrument main body controller is electrically connected to the crucible. The ice water tank is connected to the crucible through the water pump. It also includes a relay, a DC module and a water flow induction switch;

[0007] The water flow induction switch is arranged between the ice water tank and the crucible;

[0008] The ice water machine control board is electrically connected to the DC module, and the DC module is electrically connected to the coil control end of the relay through the water flow induction switch; the normally open end of the relay is respectively connected to the power supply and the instrument main body controller.

[0009] Furthermore, it also includes a switch, and the switch is arranged between the power supply and the relay.

[0010] The advantages of the utility model are as follows: the differential scanning calorimeter with safety anti-fooling function of the utility model can ensure that the phenomenon of overheating the pot will not occur, effectively protect the safe operation of the differential scanning calorimeter, and thus save the expensive replacement and maintenance costs of the core component of the crucible for the manufacturer; at the same time, it can effectively avoid the possible high-temperature fire accident. Description of the Drawings

[0011] The present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 It is a schematic diagram of the principle of a differential scanning calorimeter with safety anti-fooling of the present utility model. Specific embodiments

[0013] Please refer to Figure 1 As shown, a differential scanning calorimeter with safety anti-fooling of the present utility model includes an ice water machine control board 1, an instrument main body controller 2, a water pump 3, an ice water tank 4, and a crucible 5. The ice water control board 1 is electrically connected to the ice water tank 4 and the water pump 3. The instrument main body controller 2 is electrically connected to the crucible 5. The ice water tank 4 is connected to the crucible 5 through the water pump 3. It further includes a relay 6, a DC module 7, and a water flow induction switch 8.

[0014] The water flow induction switch 8 is arranged between the ice water tank 4 and the crucible 5.

[0015] The ice water machine control board 1 is electrically connected to the DC module 7. The DC module 7 is electrically connected to the coil control end of the relay 6 through the water flow induction switch 8. The normally open end of the relay 6 is respectively connected to the power supply and the instrument main body controller 2.

[0016] After being powered on, the ice water machine control board 1 is energized. At this time, the ice water tank 4 starts. The ice water machine control board 1 delays to start the water pump 3 to circulate and cool the crucible 5. A control signal is led out from the I / O point of the ice water control board 1. After adding a 220vac => 24vdc DC module 7, a set of DC 24v safety voltage is obtained, which is used to electrically control the instrument main body controller 2. The ice water tank 4 and the crucible 5 are connected through a circulating water pipe. The water flow induction switch 8 is arranged on the circulating water pipe. The water flow induction switch 8 is connected to a 24vdc DC power supply. When the water flow is normal, its normally open point is conducted, causing the relay 6 to be attracted. The relay 6 can be a 16A relay, and a normally open switch is provided thereon.

[0017] When the cooling system runs normally, the relay is attracted. At this time, the instrument main body controller 2 is turned on, and the crucible 5 in the instrument main body controller 2 is allowed to be conducted and powered on for heating.

[0018] When the cooling system is turned off, the DC module 7 loses voltage; or when the cooling water flow is abnormal, the normally open point of the water flow induction switch 8 is disconnected, the relay loses power and is no longer attracted, automatically disconnecting the instrument power supply and turning off the instrument.

[0019] In this embodiment, preferably, the present utility model further includes a switch 9. The switch 9 is arranged between the power supply and the relay 6. Setting the switch 9 between the power supply and the relay 6 enables manual control to disconnect, which is convenient for users to use.

[0020] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present utility model 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 thus should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality of" is two or more than two.

[0021] Although the specific embodiments of the present utility model have been described above, those skilled in the art should understand that the specific embodiments we described are illustrative only and not used to limit the scope of the present utility model. Equivalent modifications and variations made by those skilled in the art in accordance with the spirit of the present utility model should be covered by the scope protected by the claims of the present utility model.

Claims

1. A differential scanning calorimeter with safety anti-fooling function, comprising an ice water machine control board, an instrument main body controller, a water pump, an ice water tank and a crucible. The ice water control board is electrically connected to the ice water tank and the water pump, the instrument main body controller is electrically connected to the crucible, and the ice water tank is connected to the crucible through the water pump. It is characterized in that: It also includes a relay, a DC module, and a water flow induction switch; The water flow induction switch is arranged between the ice water tank and the crucible; The ice water machine control board is electrically connected to the DC module, and the DC module is electrically connected to the coil control end of the relay through the water flow induction switch; the normally open end of the relay is respectively connected to the power supply and the instrument main body controller.

2. A differential scanning calorimeter with foolproof safety according to claim 1, characterized in that: It also includes a switch, and the switch is arranged between the power supply and the relay.

Images