Safety system of hydrogen vacuum furnace

Abstract

The utility model relates to the technical field of sintering furnaces, and provides a safety system of a hydrogen vacuum furnace, which comprises a display screen. The first temperature sensor is connected with the vacuum cavity, and the first temperature sensor is used for detecting the temperature in the vacuum cavity; the flame probe is arranged in the combustion chamber and used for detecting spectral signals of hydrogen combustion flames; the hydrogen detection sensor is arranged in the combustion chamber, and the hydrogen detection sensor is used for detecting the hydrogen concentration in the combustion chamber; the cavity pressure sensor is used for detecting the pressure of the vacuum cavity; the vacuum gauge is used for detecting the vacuum value of the vacuum cavity; the computer control center is used for receiving a data signal of the first temperature sensor, comparing the data signal with a low temperature threshold and / or a high temperature threshold, alarming if the data signal is less than the low temperature threshold, and alarming if the data signal is greater than the high temperature threshold; and the computer control center controls the alarm to give an alarm. And the safety of the hydrogen vacuum furnace is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum sintering furnaces, in particular to a safety system for a hydrogen vacuum furnace. Background Art

[0002] In the prior art, vacuum welding equipment is a specialized device designed for welding workpieces. Its structure primarily includes a controller, a sealable cavity, a vacuum pump, a heating device, a heating plate, and a cooling device. The heating plate is located within the sealable cavity, and the workpiece is placed on the heating plate. The heating device and cooling device are located below the heating plate and are connected to the controller, respectively. The controller regulates the heating plate's temperature, increasing or decreasing. The vacuum pump is located outside the sealable cavity and vacuums the sealable cavity to ensure that the welding process is carried out in an oxygen-free state, ensuring welding quality while reducing the void rate within the weld and improving the reliability of the weldment. Exhaust gas emitted during the prior art process contains residual hydrogen, which can be dangerous if discharged directly into the air. Fire or explosion accidents can occur if care is taken. Summary of the Invention

[0003] The utility model provides a safety system for a hydrogen vacuum furnace, which is used to solve the problem in the prior art that direct discharge into the air may cause danger and fire or explosion accidents may occur if care is not taken.

[0004] A safety system for a hydrogen vacuum furnace, comprising:

[0005] A display screen is electrically connected to the computer control center and is used to display the temperature status of the vacuum chamber, the hydrogen status in the combustion chamber, the flame signal and the vacuum value of the vacuum chamber;

[0006] a first temperature sensor connected to the vacuum chamber, wherein the first temperature sensor is used to detect the temperature inside the vacuum chamber;

[0007] A flame probe is arranged in the combustion chamber, and is used to detect the spectrum signal of the hydrogen combustion flame;

[0008] A hydrogen detection sensor is arranged in the combustion chamber, and the hydrogen detection sensor is used to detect the hydrogen concentration in the combustion chamber;

[0009] A cavity pressure sensor is connected to the vacuum cavity and is used to detect the pressure of the vacuum cavity;

[0010] A vacuum gauge is connected to the vacuum chamber and is used to detect the vacuum value of the vacuum chamber;

[0011] The computer control center is configured to receive a data signal from a first temperature sensor and compare it with a low temperature threshold and / or a high temperature threshold, and to trigger an alarm if the temperature is less than the low temperature threshold, and to trigger an alarm if the temperature is greater than the high temperature threshold; receive a data signal from a hydrogen detection sensor and compare it with a hydrogen concentration threshold, and to trigger an alarm and close the switch valve if the temperature is greater than the hydrogen concentration threshold; keep the switch valve open if the flame detector detects a spectral signal; receive a data signal from a cavity pressure sensor and compare it with a cavity pressure threshold, and to trigger an alarm if the temperature is greater than the cavity pressure threshold; receive a data signal from a vacuum gauge and compare it with a vacuum threshold, and to trigger an alarm if the temperature is greater than the vacuum threshold;

[0012] The switch valve is electrically connected to a computer control center, and the computer control center controls the switch valve;

[0013] The alarm is electrically connected to the computer control center, and the computer control center controls the alarm to sound an alarm.

[0014] According to the safety system of the hydrogen vacuum furnace of the present invention, it also includes a formic acid pressure sensor and a nitrogen pressure sensor; the formic acid pressure sensor is connected to the formic acid barrel and is used to detect the pressure of the formic acid barrel; the nitrogen pressure sensor is connected to the nitrogen tank and is used to detect the pressure of the nitrogen tank.

[0015] According to the safety system of the hydrogen vacuum furnace of the present invention, the computer control center is also used to receive the data signal of the formic acid pressure sensor and compare it with the formic acid barrel pressure threshold, and if it is less than the formic acid barrel pressure threshold, an alarm is triggered; and to receive the data signal of the nitrogen pressure sensor and compare it with the nitrogen tank pressure threshold, and if it is less than the nitrogen tank pressure threshold, an alarm is triggered.

[0016] According to the safety system of the hydrogen vacuum furnace of the present invention, the display screen is also used to display the pressure value of the formic acid barrel and the nitrogen pressure value.

[0017] According to the safety system of the hydrogen vacuum furnace of the present invention, a flow meter is further included, which is connected to the cooling water pipe of the vacuum sintering furnace and is used to detect the flow rate of the cooling water.

[0018] According to the safety system of the hydrogen vacuum furnace of the present invention, the computer control center is further used to receive the data signal of the flow meter and compare it with the water flow threshold, and alarm if it is less than the water flow threshold.

[0019] According to the safety system of the hydrogen vacuum furnace of the present invention, the display screen is also used to display the flow value of the cooling water.

[0020] According to the safety system of the hydrogen vacuum furnace of the present invention, it also includes a second temperature sensor, which is used to detect the temperature of the combustion nozzle. The computer control center is also used to receive the data signal of the second temperature sensor and compare it with the hydrogen ignition point threshold. If it is greater than the hydrogen ignition point threshold, the switch valve is kept open.

[0021] According to the safety system of the hydrogen vacuum furnace of the present invention, the display screen is also used to display the temperature value of the combustion nozzle.

[0022] According to the safety system of the hydrogen vacuum furnace of the present invention, it also includes a heating tube current sensor, which is electrically connected to the heating tube one by one and is used to detect the current of the heating tube; the computer control center is also used to receive the data signal of the heating tube current sensor and compare it with the current threshold, and alarm if the current is less than the threshold.

[0023] The flame detector of this utility model detects the spectral signal of the hydrogen flame burning in the combustion chamber. If the spectral signal is detected, the switch valve remains open. If the spectral signal is not detected, the switch valve is closed, reducing the risk of occurrence and improving the safety of the hydrogen vacuum furnace. The cavity pressure sensor detects excessive cavity pressure, alarms, and pressure relief, thus improving the safety of the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the safety system structure of the hydrogen vacuum furnace. DETAILED DESCRIPTION

[0026] The following embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "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 accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0029] In the embodiments of the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is lower in level than the second feature.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction.

[0031] The following combination Figure 1 A safety system for a hydrogen vacuum furnace according to an embodiment of the present invention is described, comprising:

[0032] A display screen is electrically connected to the computer control center and is used to display the temperature status of the vacuum chamber, the hydrogen status in the combustion chamber, the flame signal and the vacuum value of the vacuum chamber;

[0033] A first temperature sensor is connected to the vacuum chamber and is used to detect the temperature inside the vacuum chamber;

[0034] A flame probe is arranged in the combustion chamber and is used to detect the spectrum signal of the hydrogen combustion flame;

[0035] A hydrogen detection sensor is arranged in the combustion chamber and is used to detect the hydrogen concentration in the combustion chamber;

[0036] A cavity pressure sensor is connected to the vacuum cavity and is used to detect the pressure of the vacuum cavity;

[0037] A vacuum gauge is connected to the vacuum chamber and is used to detect the vacuum value of the vacuum chamber;

[0038] The computer control center is configured to receive a data signal from the first temperature sensor and compare it with a low temperature threshold and a high temperature threshold. If the temperature is less than the low temperature threshold, an alarm is triggered; if the temperature is greater than the high temperature threshold, an alarm is triggered; receive a data signal from the hydrogen detection sensor and compare it with a hydrogen concentration threshold. If the temperature is greater than the hydrogen concentration threshold, an alarm is triggered and the switch valve is closed; if the flame probe detects a spectral signal, the switch valve is kept open; receive a data signal from the cavity pressure sensor and compare it with a cavity pressure threshold. If the temperature is greater than the cavity pressure threshold, an alarm is triggered; receive a data signal from the vacuum gauge and compare it with a vacuum threshold. If the temperature is greater than the vacuum threshold, an alarm is triggered;

[0039] The switch valve is electrically connected to the computer control center, and the computer control center controls the switch valve;

[0040] The alarm is electrically connected to the computer control center, and the computer control center controls the alarm to sound an alarm.

[0041] In some embodiments, a formic acid pressure sensor and a nitrogen pressure sensor are also included; the formic acid pressure sensor is connected to the formic acid barrel to detect the pressure of the formic acid barrel; the nitrogen pressure sensor is connected to the nitrogen tank to detect the pressure of the nitrogen tank.

[0042] In some embodiments, the computer control center is further configured to receive data signals from a formic acid pressure sensor and compare the signals with a formic acid barrel pressure threshold, and to trigger an alarm if the pressure is less than the formic acid barrel pressure threshold; and to receive data signals from a nitrogen pressure sensor and compare the signals with a nitrogen tank pressure threshold, and to trigger an alarm if the pressure is less than the nitrogen tank pressure threshold.

[0043] In some embodiments, the display screen is also used to display the formic acid barrel pressure value and the nitrogen pressure value.

[0044] In some embodiments, a flow meter is further included, connected to the cooling water pipe of the vacuum sintering furnace, for detecting the flow rate of the cooling water.

[0045] In some embodiments, the computer control center is further configured to receive a data signal from the flow meter and compare the signal with a water flow threshold, and to generate an alarm if the signal is less than the water flow threshold.

[0046] In some embodiments, the display screen is also used to display the flow value of cooling water.

[0047] In some embodiments, a second temperature sensor is also included, which is used to detect the temperature of the combustion nozzle. The computer control center is also used to receive the data signal of the second temperature sensor and compare it with the hydrogen ignition point threshold. If it is greater than the hydrogen ignition point threshold, the switch valve is kept open.

[0048] In some embodiments, the display screen is also used to display the temperature value of the combustion nozzle.

[0049] In some embodiments, a heating tube current sensor is also included, which is electrically connected to the heating tube and is used to detect the current of the heating tube; the computer control center is also used to receive the data signal of the heating tube current sensor and compare it with the current threshold, and alarm if the current is less than the threshold.

[0050] In some embodiments, a heating tube power sensor is also included. The heating tube power sensors are electrically connected to the heating tubes one by one to detect the power of the heating tubes. The computer control center is also used to receive data signals from the heating tube power sensors and compare them with the power threshold. If the power is less than the power threshold, an alarm is triggered. Specifically, one heating tube is electrically connected to one power sensor. When the power of a certain heating tube is in an ideal state, the display screen shows the status in green. When it is not in the ideal state, the display screen shows the status in red and a power warning is triggered to remind the staff to repair or replace it.

[0051] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A safety system for a hydrogen vacuum furnace, characterized in that: include: A display screen is electrically connected to the computer control center and is used to display the temperature status of the vacuum chamber, the hydrogen status in the combustion chamber, the flame signal and the vacuum value of the vacuum chamber; a first temperature sensor connected to the vacuum chamber, wherein the first temperature sensor is used to detect the temperature inside the vacuum chamber; A flame probe is arranged in the combustion chamber, and is used to detect the spectrum signal of the hydrogen combustion flame; A hydrogen detection sensor is arranged in the combustion chamber, and the hydrogen detection sensor is used to detect the hydrogen concentration in the combustion chamber; A cavity pressure sensor is connected to the vacuum cavity and is used to detect the pressure of the vacuum cavity; A vacuum gauge is connected to the vacuum chamber and is used to detect the vacuum value of the vacuum chamber; The computer control center is configured to receive a data signal from a first temperature sensor and compare it with a low temperature threshold and / or a high temperature threshold, and to trigger an alarm if the temperature is less than the low temperature threshold, and to trigger an alarm if the temperature is greater than the high temperature threshold; receive a data signal from a hydrogen detection sensor and compare it with a hydrogen concentration threshold, and to trigger an alarm and close the switch valve if the temperature is greater than the hydrogen concentration threshold; keep the switch valve open if the flame detector detects a spectral signal; receive a data signal from a cavity pressure sensor and compare it with a cavity pressure threshold, and to trigger an alarm if the temperature is greater than the cavity pressure threshold; receive a data signal from a vacuum gauge and compare it with a vacuum threshold, and to trigger an alarm if the temperature is greater than the vacuum threshold; The switch valve is electrically connected to a computer control center, and the computer control center controls the switch valve; The alarm is electrically connected to the computer control center, and the computer control center controls the alarm to sound an alarm.

2. The safety system of the hydrogen vacuum furnace according to claim 1, characterized in that: It also includes a formic acid pressure sensor and a nitrogen pressure sensor; the formic acid pressure sensor is connected to the formic acid barrel to detect the pressure of the formic acid barrel; the nitrogen pressure sensor is connected to the nitrogen tank to detect the pressure of the nitrogen tank.

3. The safety system of the hydrogen vacuum furnace according to claim 2, characterized in that: The computer control center is further configured to receive data signals from a formic acid pressure sensor and compare the signals with a formic acid barrel pressure threshold, and to trigger an alarm if the pressure is less than the formic acid barrel pressure threshold; and to receive data signals from a nitrogen pressure sensor and compare the signals with a nitrogen tank pressure threshold, and to trigger an alarm if the pressure is less than the nitrogen tank pressure threshold.

4. The safety system of the hydrogen vacuum furnace according to claim 2, characterized in that: The display screen is also used to display the formic acid barrel pressure value and the nitrogen pressure value.

5. The safety system of the hydrogen vacuum furnace according to claim 1, characterized in that: It also includes a flow meter connected to the cooling water pipe of the vacuum sintering furnace and used for detecting the flow of the cooling water.

6. The safety system for a hydrogen vacuum furnace according to claim 5, characterized in that: The computer control center is also used to receive the data signal of the flow meter and compare it with the water flow threshold, and alarm if it is less than the water flow threshold.

7. The safety system for a hydrogen vacuum furnace according to claim 6, characterized in that: The display screen is also used to display the flow value of cooling water.

8. The safety system of the hydrogen vacuum furnace according to claim 1, characterized in that: It also includes a second temperature sensor, which is used to detect the temperature of the combustion nozzle. The computer control center is also used to receive the data signal of the second temperature sensor and compare it with the hydrogen ignition point threshold. If it is greater than the hydrogen ignition point threshold, the switch valve is kept open.

9. The safety system for a hydrogen vacuum furnace according to claim 8, characterized in that: The display screen is also used to display the temperature value of the combustion nozzle.

10. The safety system for a hydrogen vacuum furnace according to claim 1, characterized in that: It also includes a heating tube current sensor, which is electrically connected to the heating tubes one by one and is used to detect the current of the heating tubes; the computer control center is also used to receive the data signal of the heating tube current sensor and compare it with the current threshold, and alarm if the current is less than the threshold.

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