Immersion type over-temperature overtime power-off protection device and control method thereof

Abstract

The invention belongs to the technical field of power distribution equipment, and discloses an immersion type over-temperature overtime power-off protection device and a control method thereof.The device comprises a socket, a temperature sensing element and a control assembly, and the socket is used for being connected with a power source of instrument equipment; the temperature sensing element is used for monitoring the temperature of the to-be-measured liquid; the control assembly is electrically connected with the socket and the temperature sensing element, and the control assembly comprises an overtemperature protection circuit and / or an overtime protection circuit; the overtemperature protection circuit comprises a temperature controller and a main contactor which are electrically connected, and the temperature controller is used for collecting temperature signals of the temperature sensing element and controlling the socket to be powered off through the main contactor; the overtime protection circuit comprises a timing controller and an auxiliary contactor which are electrically connected, the timing controller is further electrically connected with the main contactor, and the timing controller is used for monitoring test time and controlling the socket to be powered on through the auxiliary contactor and the main contactor. According to the invention, the whole test process can be effectively monitored and managed, the test safety is ensured, and the purpose of protecting instruments and equipment is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of power distribution equipment, and in particular to an immersion-type over-temperature timeout power-off protection device and a control method thereof. Background Art

[0002] Safety is one of the top issues in the petrochemical industry. Taking effective safety precautions and effectively monitoring and managing the entire test process have become a must to ensure the property and personal safety of petrochemical companies. In the long-term test process, that is, the test time is more than ten hours, dozens of hours, hundreds of hours or even longer, it is difficult for the operator to stay at the instrument and equipment site all the time, observe the operation of the instrument and equipment and take corresponding countermeasures.

[0003] To this end, instruments with built-in temperature control functions are selected for testing to solve the above problems. However, during the test, the temperature control function of the instrument may fail, that is, when the heater of the instrument continues to work, the temperature inside the instrument continues to rise, and overheating will occur. If the power is not turned off in time, the motor may be burned out, and even the product being tested in the instrument may be burned, leading to a fire accident, posing a major safety hazard.

[0004] In addition, during the test of the instrument, if the test time reaches the preset time limit and the test is not stopped in time within the specified time, not only will the immediate test results not be obtained, affecting the accuracy of the test results, but long-term overtime operation will cause damage to the instrument. Summary of the invention

[0005] The first aspect of the present invention provides an immersion over-temperature timeout power-off protection device to solve the problem in the prior art that instruments and equipment cannot automatically power off in the event of an over-temperature timeout, posing a safety hazard. The device can effectively monitor and manage the entire test process, ensure the safety of the test, and achieve the purpose of protecting instruments and equipment.

[0006] A second aspect of the present invention provides a control method based on an immersion-type over-temperature timeout power-off protection device.

[0007] The first aspect of the present invention provides an immersion type over-temperature timeout power-off protection device, comprising:

[0008] Socket, used to connect to the power supply of instruments and equipment;

[0009] A temperature sensing element, used for being immersed in the liquid to be tested to monitor the temperature of the liquid to be tested;

[0010] A control component is electrically connected to the socket and the temperature sensing element, and the control component includes an over-temperature protection circuit and / or a timeout protection circuit; the over-temperature protection circuit includes an electrically connected temperature controller and a main contactor, and the temperature controller is used to collect the temperature signal of the temperature sensing element and control the socket to be powered off through the main contactor; the timeout protection circuit includes an electrically connected timing controller and an auxiliary contactor, and the timing controller is also electrically connected to the main contactor, and the timing controller is used to monitor the test time and control the socket to be powered off through the auxiliary contactor and the main contactor.

[0011] An immersion over-temperature timeout power-off protection device provided by the present invention also includes:

[0012] Antennas, used to send or receive signals;

[0013] A wireless communication module is electrically connected to the antenna and the socket, and is used to collect a power-on signal or a power-off signal of the socket, and to feed back the power-on signal or the power-off signal to the antenna.

[0014] According to an immersion over-temperature timeout power-off protection device provided by the present invention, the communication module includes a 5G communication module.

[0015] An immersion over-temperature timeout power-off protection device provided by the present invention also includes a monitoring device;

[0016] The monitoring device is connected to the 5G communication module through a network to collect alarm information and monitoring images.

[0017] According to an immersion over-temperature timeout power-off protection device provided by the present invention, the control component also includes:

[0018] An air switch is arranged in the main circuit where the over-temperature protection circuit and / or the timeout protection circuit are located. The air switch is used to control the power on or off of the main circuit so as to perform automatic power-off protection when the main circuit is short-circuited or under negative pressure.

[0019] According to an immersion over-temperature timeout power-off protection device provided by the present invention, the control component also includes:

[0020] A temperature control start knob and a temperature control indicator light, wherein the temperature control start knob and the temperature control indicator light are both arranged in the over-temperature protection circuit, the temperature control start knob is used to connect the main circuit and the over-temperature protection circuit, and the temperature control indicator light is used to prompt the working status of the main circuit and the over-temperature protection circuit.

[0021] According to an immersion over-temperature timeout power-off protection device provided by the present invention, the control component also includes:

[0022] A timing start knob and a timing indicator light, wherein the timing start knob and the timing indicator light are both arranged in the timeout protection circuit, the timing start knob is used to connect the main circuit and the timeout protection circuit, and the timing indicator light is used to prompt the working status of the main circuit and the timeout protection circuit.

[0023] An immersion over-temperature timeout power-off protection device provided by the present invention also includes:

[0024] The shell is provided with a receiving cavity, the control assembly and the socket are arranged in the receiving cavity; the side wall of the shell is provided with a through hole, the temperature sensing element is passed through the through hole and can be placed outside the shell.

[0025] According to an immersion over-temperature timeout power-off protection device provided by the present invention, the housing comprises an upper box body and a lower box body, and the upper box body and the lower box body are stacked to divide the accommodating cavity into a first chamber and a second chamber;

[0026] The control component is disposed in any one of the first chamber and the second chamber, and the temperature sensing element is disposed in the other one of the first chamber and the second chamber.

[0027] A second aspect of the present invention provides a control method for an immersion over-temperature timeout power-off protection device according to any one of the above items, comprising:

[0028] Determine that the socket is connected to the instrument and powered on, and determine that the temperature sensing element is immersed in the liquid to be measured; turn on the main circuit and control circuit of the over-temperature protection circuit and / or the timeout protection circuit;

[0029] The temperature controller collects the temperature signal monitored by the temperature sensing element, and controls the contact action of the main contactor based on the temperature signal to cut off the power supply of the socket;

[0030] The test time is monitored by the timing controller, and the contact actions of the auxiliary contactor and the main contactor are controlled based on the test time to control the power off of the socket.

[0031] A control method based on an immersion-type over-temperature timeout power-off protection device provided by the present invention also includes:

[0032] The power-on or power-off signal of the socket is collected through the wireless communication module, and the power-on or power-off signal is sent through the antenna.

[0033] A control method based on an immersion-type over-temperature timeout power-off protection device provided by the present invention also includes:

[0034] The alarm information and monitoring screen of the immersion over-temperature timeout power-off protection device are obtained through the monitoring equipment, and the alarm information and monitoring screen are collected through the wireless communication module, and the alarm information and monitoring screen are sent through the antenna.

[0035] The immersion over-temperature timeout power-off protection device provided by the present invention can automatically control the power off of external instruments and equipment when the test is over-temperature or timed out by setting a socket, a temperature sensing element and a control component, thereby achieving the purpose of test safety and protection of instruments and equipment. It has a simple structure, low manufacturing cost, and a wide range of applications. It can be used in conjunction with any instrument and equipment that immerses the temperature sensing element in the test liquid.

[0036] Furthermore, the present invention effectively monitors and manages the entire test process by setting up antennas, wireless communication modules and cameras, collects the power gain and loss information of the instrument or the instrument appearance image through the 5G communication module, and sends the power gain and loss information of the instrument or the instrument appearance image to the operator's mobile phone through the antenna, reminding the operator to pay attention to the working status of the instrument, thereby achieving the purpose of test safety and protection of the instrument.

[0037] The present invention provides a control method based on an immersion over-temperature timeout power-off protection device. When the temperature controller detects that the temperature of the liquid to be tested monitored by the temperature sensing element is higher than the set temperature, the temperature controller transmits a digital signal to the control circuit of the main contactor, the electromagnetic attraction disappears, and the armature is released under the action of the release spring, so that the contacts are restored, the normally open contacts are disconnected, the normally closed contacts are closed, the control circuit is powered off, the main circuit is powered off, the power supply of the socket is disconnected, and the power supply of external instruments and equipment is also disconnected, thereby achieving the purpose of test safety and protection of instruments and equipment.

[0038] When the external equipment is working properly, set the time limit value to be controlled on the timing controller, turn on the timing start knob, connect the auxiliary contactor and achieve self-locking, and the timeout protection circuit will start immediately. When the test time reaches the set time limit value, the timing controller outputs a digital signal to the auxiliary contactor and cuts off its control circuit, followed by the main control circuit being powered off, the main circuit being powered off, the power supply of the socket being disconnected, and the power supply of the external equipment being disconnected, achieving the purpose of test safety and protecting the equipment.

[0039] When any of the over-temperature or overtime protection control circuits loses power, the 5G communication module detects the power failure signal and sends the "instrument power failure" information to the WeChat account or mobile phone number of the designated operator through the antenna. The video signal of the instrument and equipment collected by the monitoring equipment can be quantified, collected, and encoded to form a video digital code. The antenna transmits the on-site video recording information to the designated operator's mobile phone in the form of electromagnetic waves. The designated operator can also use the mobile phone to remotely start the monitoring equipment at any time to confirm the working status of the instrument and equipment, thereby achieving the purpose of real-time monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction is given below 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.

[0041] Figure 1 It is a schematic diagram of the overall structure of the immersion type over-temperature timeout power-off protection device provided by an embodiment of the present invention;

[0042] Figure 2 It is a partial structural schematic diagram of an immersion-type over-temperature timeout power-off protection device provided by an embodiment of the present invention;

[0043] Figure 3 It is a PLC ladder diagram of the immersion over-temperature timeout power-off protection device provided in an embodiment of the present invention.

[0044] Reference numerals:

[0045] 100, housing; 110, upper housing; 120, lower housing; 130, first chamber; 140, second chamber; 150, through hole;

[0046] 200, socket;

[0047] 300, temperature sensing element;

[0048] 400. Control component; 410. Temperature controller; 420. Main contactor; 430. Timing controller; 440. Auxiliary contactor; 450. Antenna; 460. 5G communication module; 470. Air switch; 480. Temperature control start knob; 490. Temperature control indicator light; 500. Timing start knob; 510. Timing indicator light; 520. Monitoring equipment. DETAILED DESCRIPTION

[0049] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0050] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0051] In the embodiments of the present application, unless otherwise clearly specified and 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. Moreover, a first feature being "above", "above" and "above" a second feature may mean that the first feature is directly above or obliquely 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" and "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. 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 embodiments of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0053] Figure 1 It is a schematic diagram of the overall structure of the immersion type over-temperature timeout power-off protection device provided by an embodiment of the present invention; Figure 2 It is a partial structural schematic diagram of an immersion-type over-temperature timeout power-off protection device provided by an embodiment of the present invention; Figure 3 It is a PLC ladder diagram of the immersion over-temperature timeout power-off protection device provided in an embodiment of the present invention (in the figure, KH represents a temperature controller, KT represents a timing controller, KM16 represents a main contactor, and KM18 represents an auxiliary contactor).

[0054] See also Figures 1 to 3The first aspect of the embodiment of the present invention provides an immersion type over-temperature timeout power-off protection device. The immersion type over-temperature timeout power-off protection device is an external protection device and can be used in conjunction with any equipment or device that needs to be tested for protection. That is, the immersion type over-temperature timeout power-off protection device is connected between a power supply and an instrument to provide over-temperature and timeout protection for the instrument. The immersion type over-temperature timeout power-off protection device includes a socket 200, a temperature sensing element 300, and a control component 400.

[0055] The immersion over-temperature timeout power-off protection device itself is provided with a plug, which is connected to the power supply, and the socket 200 is used to connect to the power supply of the instrument and equipment to power the instrument and equipment (such as test equipment). The temperature sensing element 300 is immersed in the liquid to be tested to monitor the temperature of the liquid to be tested.

[0056] Wherein, the control component 400 includes an over-temperature protection circuit and / or a timeout protection circuit. On the one hand, the control component 400 may include an over-temperature protection circuit so that the immersion-type over-temperature timeout power-off protection device has an over-temperature protection function. On the other hand, the control component 400 may include an over-temperature protection circuit so that the immersion-type over-temperature timeout power-off protection device has an over-temperature protection function. On the other hand, the control component 400 may include an over-temperature protection circuit and a timeout protection circuit at the same time so that the immersion-type over-temperature timeout power-off protection device has both over-temperature protection and timeout protection functions.

[0057] like Figure 2 and Figure 3 As shown, it can be understood that the over-temperature protection circuit includes a temperature controller 410 and a main contactor 420, the temperature controller 410 is electrically connected to the main contactor 420, and the temperature controller 410 is electrically connected to the temperature sensing element 300, the temperature controller 410 is used to collect the temperature signal of the temperature sensing element 300, and control the socket 200 to be powered on or off through the main contactor 420.

[0058] like Figure 2 and Figure 3 As shown, it can be understood that the timeout protection circuit includes a timing controller 430 and an auxiliary contactor 440, the timing controller 430 is electrically connected to the auxiliary contactor 440, the timing controller 430 is used to monitor the test time, and control the socket 200 to be powered on or off through the auxiliary contactor 440 and the main contactor 420.

[0059] Equivalently, the temperature controller 410 is electrically connected to the temperature sensing element 300 and the main contactor 420 to form an over-temperature protection circuit, and the temperature controller 410 is used to collect the temperature signal of the temperature sensing element 300 and control the power on or off of the socket 200 through the main contactor 420. Among them, the main contactor 420 is also electrically connected to the socket 200, that is, the socket 200 is connected to the over-temperature protection circuit.

[0060] In specific use, the temperature sensing element 300 may be a thermocouple thermometer, which may be inserted into or immersed in a test sample (such as a liquid or a solution) of an external instrument or equipment, so as to monitor the temperature of the test sample.

[0061] When the thermocouple thermometer detects abnormal temperature (for example, the temperature exceeds the set test temperature), the temperature controller 410 can control the main contactor 420 to disconnect, thereby disconnecting the socket 200, so that the external instrument and equipment connected to the socket 200 will also be disconnected to avoid the danger of overheating of the instrument and equipment. That is, when the heater of the instrument and equipment is always working, the power supply of the heater cannot be turned on and off by the normal signal supply, so that the heating tube cannot stop heating rhythmically, and the temperature in the instrument and equipment continues to rise, it is easy to cause fire, etc.

[0062] In other words, the timing controller 430 is electrically connected to the auxiliary contactor 440 to form a timeout protection circuit, and the timing controller 430 is used to control and monitor the test time. In the embodiment of the present invention, the timing controller 430 controls the power on and off of the socket 200 through the auxiliary contactor 440 and the main contactor 420.

[0063] When the test time reaches the preset time, such as the end of the countdown, or in some examples, when the difference between the set time and the timing time is zero, the timing controller 430 controls the auxiliary contactor 440 to disconnect, thereby cutting off the power to the socket 200, so as to ensure the accuracy of the test time of the external instrument and equipment, and to prevent the instrument and equipment from remaining powered on after the test is completed, that is, the power is not cut off after the test is stopped, so as to reduce the service life of the electronic components in the instrument and equipment, or even damage the instrument and equipment.

[0064] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, the immersion over-temperature timeout power-off protection device further includes an antenna 450 and a wireless communication module. The wireless communication module is electrically connected to the socket 200 and the antenna 450, respectively, that is, the wireless communication module has an antenna interface, and a corresponding antenna is selected according to the type of the antenna interface. The wireless communication module is used to collect the power-on signal or power-off signal of the socket 200, and feed the power-on signal or power-off signal back to the antenna 450, and the antenna 450 sends or receives the corresponding information, and the sent information can be used as alarm information.

[0065] In some optional embodiments of the present invention, the wireless communication module includes a 5G communication module 460. Of course, in addition to the 5G communication module 460, the wireless communication module can also be other wireless communication modules, such as a WiFi antenna module.

[0066] The 5G communication module 460 is electrically connected to the socket 200. The 5G communication module 460 is used to collect power gain and loss signals of the socket 200. When the socket 200 is powered off due to over-temperature or timeout, the 5G communication module 460 monitors the power loss signal of the socket 200 and feeds the power loss signal back to the antenna 450. The antenna 450 sends the "instrument power off" information to the operator's WeChat account or mobile phone number.

[0067] Among them, the control component 400 can be a control circuit board, and the 5G communication module can be electrically connected to a printed circuit or an integrated circuit on the control circuit board.

[0068] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, the immersion-type over-temperature timeout power-off protection device also includes a monitoring device 520, which is connected to the 5G communication module 460 through a network for collecting alarm information and monitoring images.

[0069] In this embodiment, by adopting a 5G communication module 460 to be electrically connected to the socket 200, when any one of the over-temperature protection circuit and the timeout protection circuit is powered off, the 5G communication module 460 monitors the power failure signal of the socket 200, and sends the "instrument power failure" information to the operator's WeChat account or mobile phone number through the antenna 450. At the same time, the video signal of the instrument and equipment collected by the monitoring device 520 can be quantized, collected, and encoded to form a video digital code, and the antenna 450 transmits the video recording to the operator's mobile phone in the form of electromagnetic waves. The operator can also use the mobile phone to remotely start the monitoring device 520 at any time to confirm the working status of the instrument and equipment.

[0070] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, the control component 400 also includes an air switch 470, which is arranged in the main circuit of the over-temperature protection circuit and / or the timeout protection circuit. The air switch 470 is used to control the main circuit to be connected or disconnected, so as to automatically cut off the power when the main circuit and the instrument equipment are short-circuited or under negative pressure.

[0071] In this embodiment, the immersion over-temperature timeout power-off protection device is connected to external instruments and equipment through the socket 200 using a 220V AC power supply. The socket 200 is used in conjunction with the temperature controller 410, the timing controller 430, the air switch 470, the main contactor 420, and the auxiliary contactor 440 to achieve over-temperature timeout protection for external instruments and equipment.

[0072] Specifically, in an embodiment of the present invention, the air switch 470 is electrically connected to the power cord. At the same time, the air switch 470 is electrically connected to the main circuit and the control circuit of the over-temperature protection circuit and the timeout protection circuit, and is used to automatically cut off power when the main circuit and instruments and equipment are short-circuited or under negative pressure.

[0073] That is, the main contactor 420 is electrically connected to the temperature controller 410 , the auxiliary contactor 440 , the socket 200 , the air switch 470 , and the temperature sensing element 300 , and is used to control the closing or opening of the main circuit and the over-temperature protection circuit.

[0074] The auxiliary contactor 440 is electrically connected to the main contactor 420 and the timing controller 430, and is used to collect signals in the timeout protection circuit to determine whether to cut off the main circuit.

[0075] It is understandable that in some possible cases, when a short circuit or negative pressure occurs in external test equipment (such as electrical equipment), the air switch 470 can trip in time, thereby promptly cutting off power to the over-temperature protection circuit and the timeout protection circuit to ensure the safety of the test equipment.

[0076] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, the control component 400 also includes a temperature control start knob 480 and a temperature control indicator light 490. The temperature control start knob 480 and the temperature control indicator light 490 are both arranged in the over-temperature protection circuit, that is, the temperature control start knob 480, the temperature controller 410, the main contactor 420 and the temperature control indicator light 490 are all electrically connected. The temperature control start knob 480 is used to connect the power supply of the main contactor 420 and realize self-locking. The temperature control indicator light 490 is used to indicate the on / off state of the over-temperature protection circuit by turning on or off the light.

[0077] In this embodiment, by turning on the temperature control start knob 480, the main contactor 420 is turned on and self-locking is achieved, and at the same time the main circuit is turned on, the immersion-type over-temperature timeout power-off protection device is powered on and operated, the temperature controller 410 is started, and the temperature control indicator light 490 is powered on and remains on.

[0078] It is understandable that the temperature control start knob 480 may be a button or a touch key, etc. The temperature control indicator light 490 may be a light emitting diode. In other possible examples, the temperature control indicator light 490 may also be other types of light emitting parts, which is not limited in the embodiment of the present invention.

[0079] Continue reading Figure 1 and Figure 2In some embodiments of the present invention, the control component 400 also includes a timing start knob 500 and a timing indicator light 510. The timing start knob 500 and the timing indicator light 510 are both arranged in the timeout protection circuit, that is, the timing start knob 500, the timing controller 430, the main contactor 420, the auxiliary contactor 440 and the timing indicator light 510 are all electrically connected. The timing start knob 500 is used to connect the power supply of the main contactor 420 and the auxiliary contactor 440 and realize interlocking. The timing indicator light 510 is used to indicate the on / off state of the timeout protection circuit by turning on or off the light.

[0080] In this embodiment, by turning on the timing start knob 500, the main contactor 420 and the auxiliary contactor 440 are connected and self-locking is achieved, the timeout protection circuit is immediately started, and the timing indicator light 510 is powered on and remains on.

[0081] It is understandable that the timing start knob 500 may be a button or a touch key, etc. In addition, the timing indicator light 510 may also be an LED light.

[0082] Continue reading Figure 1 and Figure 2 In some embodiments of the present invention, the immersion over-temperature timeout power-off protection device further includes a housing 100, the housing 100 is provided with a receiving cavity, the control assembly 400 and the socket 200 are arranged in the receiving cavity, an opening can be opened on the housing 100, and a cover plate is installed at the opening. When the plug of the instrument needs to be connected to the socket 200, the cover plate is opened to expose the socket 200. When the plug of the instrument does not need to be connected, the cover plate is covered at the opening to close the socket 200 to prevent impurities from entering the socket 200 and affecting the use. When the cover plate is made of explosion-proof sealing material, it cooperates with the housing 100 to form an explosion-proof shell. Of course, the socket 200 can also be arranged on the surface of the housing 100 in some cases. The socket 200 can be a three-hole socket with a rated current of 16A. The socket 200 is electrically connected to the main contactor 420, the 5G communication module 460 and the instruments and equipment to control the power on and off of the instruments and equipment. A through hole 150 is provided on the side wall of the shell 100. The temperature sensing element 300 is passed through the through hole 150 and can be placed on the outside of the shell 100 to be immersed in the liquid to be tested to monitor the temperature of the liquid to be tested.

[0083] Equivalently, the housing 100 is integrally provided, and a receiving cavity is provided in the housing 100 , and the temperature sensing element 300 and the control component 400 are both provided in the receiving cavity.

[0084] Continue reading Figure 1 and Figure 2In some embodiments of the present invention, the housing 100 includes an upper box body 110 and a lower box body 120, and the upper box body 110 and the lower box body 120 are stacked to divide the accommodating cavity into a first chamber 130 and a second chamber 140; the control component 400 is disposed in any one of the first chamber 130 and the second chamber 140, and the temperature sensing element 300 is disposed in the other of the first chamber 130 and the second chamber 140.

[0085] It is equivalent to that the shell 100 is divided into two chambers, and two independent chambers are separated in the shell 100. In this way, the control component 400 is arranged in one chamber, and the temperature sensing element 300 is arranged in the other chamber, which is not only convenient for the installation of the control component 400 and the temperature sensing element 300, but also convenient for the maintenance and replacement of the control component 400 and the temperature sensing element 300.

[0086] In the specific setting, the upper box 110 and the lower box 120 can both be standard parts, for example, the size of each layer is 300cm×250cm×150cm; it can be understood here that the upper box 110 and the lower box 120 can also be other sizes, as long as they can be manufactured as a standard part, and the upper inner cavity of the protection box is formed in the upper box 110; wherein, the temperature controller 410, the timing controller 430, the air switch 470, the main contactor 420, the socket 200, the auxiliary contactor 440 and the 5G communication module 460 are all fixedly installed in the upper inner cavity of the protection box. In addition, in the embodiment of the present invention, the lower inner cavity of the protection box is formed in the lower box 120, and the thermocouple thermometer is placed in the lower inner cavity of the protection box.

[0087] Specifically, in the embodiment of the present invention, the upper box 110 and the lower box 120 can be made of the same material. For example, in some examples, the upper box 110 and the lower box 120 can both be made of insulating materials.

[0088] In this embodiment, by setting an upper box body 110, the temperature controller 410, the timing controller 430, the air switch 470, the main contactor 420, the socket 200, the auxiliary contactor 440 and the 5G communication module 460 are fixedly installed in the upper inner cavity of the protection box with screws, bolts or the like, and a lower box body 120 is set, and the thermocouple thermometer is placed in the lower inner cavity of the protection box, which is beneficial to improve the protection capability of the temperature controller 410, the timing controller 430, the air switch 470, the main contactor 420, the socket 200, the auxiliary contactor 440 and the 5G communication module 460 and the thermocouple thermometer, so that each component is not easily damaged and the service life can be effectively extended.

[0089] As a specific example of an embodiment of the present invention, the upper box 110 can be made of explosion-proof sealing material. In other examples, the lower box 120 can also be made of explosion-proof sealing material, which can effectively improve the safety of the immersion over-temperature timeout power-off protection device.

[0090] It can be understood here that the arrangement order of the temperature control indicator light 490, the temperature control start knob 480, the timing indicator light 510 and the timing start knob 500 can also be other orders, and the embodiment of the present invention does not limit the arrangement order of the temperature control indicator light 490, the temperature control start knob 480, the timing indicator light 510 and the timing start knob 500.

[0091] In a specific example of an embodiment of the present invention, the lower box 120 is provided with a through hole, so that a thermocouple thermometer can extend from the through hole and be immersed in the test liquid of an external instrument to monitor and feedback the temperature of the test liquid.

[0092] The immersion over-temperature timeout power-off protection device of the present invention, by being used in conjunction with external instruments and equipment, can automatically control the external instruments and equipment to cut off power when the test is over-temperature or timed out, and automatically send power gain and loss information or instrument appearance images to the operator's mobile phone through the 5G communication module 460 to remind the operator to pay attention to the working status of the instruments and equipment, thereby achieving the purpose of test safety and protection of instruments and equipment.

[0093] In an example of an embodiment of the present invention, the temperature control indicator light 490, the temperature control start knob 480, the timing indicator light 510, and the timing start knob 500 are installed on the side of the upper box body 110 of the protection box in sequence from top to bottom with screws, and the antenna 450 and the monitoring device 520 are placed on the top of the upper box body 110.

[0094] In a specific embodiment, when the immersion over-temperature timeout power-off protection device of the present invention is used in conjunction with external instruments and equipment:

[0095] First, connect the immersion over-temperature timeout power-off protection device between the power supply and the external instrument and equipment, immerse the thermocouple thermometer into the test liquid of the instrument and equipment, set the temperature limit value to be controlled on the temperature controller 410, manually close the air switch 470, the electromagnetic suction in the air switch 470 attracts the armature, the main contact is closed, and the main power is turned on. The control circuit of the temperature controller 410 allows startup, and the temperature control start knob 480 is turned on. The static iron core of the main contactor 420 generates electromagnetic suction, the armature is attracted, and the connecting rod connected to the armature drives the contact to move, the normally closed contact is disconnected, the normally open contact is closed, and the self-locking is maintained, the main circuit and the over-temperature protection circuit are connected, the temperature control indicator light 490 is on, the socket 200 circuit is connected, and the instruments and equipment electrically connected to the socket 200 are also connected and can be used normally, and the power of the temperature controller 410 is turned on. At the same time, the 5G communication module 460 detects the power signal of the socket 200 and sends the "instrument is powered" information to the operator's WeChat account or mobile phone number through the antenna 450.

[0096] Then, the external instruments and equipment are operated correctly, the thermocouple thermometer works, the temperature of the liquid in the instruments and equipment is measured and monitored, and the digital signal is output to the temperature controller 410 for timely monitoring, and maintained when normal. When the temperature controller collects the temperature of the liquid to be measured monitored by the temperature sensing element and is higher than the set temperature, the temperature controller transmits the digital signal to the temperature controller 410, and the temperature controller 410 controls the control circuit (i.e., the over-temperature protection circuit) of the main contactor 420, the electromagnetic attraction of the main contactor 420 disappears, and the armature is released under the action of the release spring, so that the contacts are restored, the normally open contacts are disconnected, the normally closed contacts are closed, the control circuit is powered off, the main circuit is powered off, the socket 200 is powered off, and the external instruments and equipment are also disconnected, so as to achieve the purpose of test safety and protection of instruments and equipment.

[0097] When the external instrument and equipment are working normally, the time limit value to be controlled is set on the timing controller 430, the timing start knob 500 is turned on, the auxiliary contactor 440 is turned on and self-locked, and the timeout protection circuit is immediately started. When the test time reaches the set time limit value, the timing controller outputs a digital signal to the auxiliary contactor 440 and cuts off its control circuit, and then the main control circuit is powered off, the main circuit is powered off, the power supply of the socket 200 is disconnected, and the power supply of the external instrument and equipment is disconnected, thereby achieving the purpose of test safety and protection of the instrument and equipment.

[0098] In addition, it can be understood that when any of the over-temperature or overtime protection control circuits fails to provide power, the 5G communication module 460 collects the power failure signal of the socket 200 and feeds it back to the antenna 450. The "instrument power failure" information is sent to the operator's WeChat account or mobile phone number through the antenna 450. The video signal of the instrument collected by the monitoring device 520 can be quantized, collected, and encoded to form a video digital code. The antenna 450 transmits the on-site video recording information to the designated operator's mobile phone in the form of electromagnetic waves. The designated operator can also use the mobile phone to remotely start the monitoring device 520 at any time to confirm the working status of the instrument and equipment, thereby achieving the purpose of real-time monitoring.

[0099] A second aspect of an embodiment of the present invention provides a control method for an immersion over-temperature timeout power-off protection device based on any one of the above items, comprising:

[0100] Confirm that the socket 200 is connected to the instrument and powered on, and confirm that the temperature sensing element 300 is immersed in the liquid to be tested; turn on the main circuit and control circuit of the over-temperature protection circuit and / or the timeout protection circuit;

[0101] The temperature controller 410 collects the temperature signal monitored by the temperature sensing element 300, and controls the contact action of the main contactor 420 based on the temperature signal to cut off the power supply of the socket 200;

[0102] The test time is monitored by the timing controller 430 , and the contact actions of the auxiliary contactor 440 and the main contactor 420 are controlled based on the test time to control the power off of the socket 200 .

[0103] In some embodiments of the present invention, a control method for an immersive over-temperature timeout power-off protection device based on any of the above items also includes: collecting the power-on or power-off signal of the socket 200 through a wireless communication module, and sending the power-on or power-off signal through an antenna 450.

[0104] In some embodiments of the present invention, a control method for an immersion-type over-temperature timeout power-off protection device based on any of the above items also includes: obtaining alarm information and monitoring screen of the immersion-type over-temperature timeout power-off protection device through a monitoring device 520, and collecting the alarm information and monitoring screen through a wireless communication module, and sending the alarm information and monitoring screen through an antenna 450, so that an operator can monitor the status of the immersion-type over-temperature timeout power-off protection device in real time.

[0105] 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 embodiments of the present invention.

Claims

1. An immersion over-temperature timeout power-off protection device, characterized in that: include: Socket, used to connect to the power supply of instruments and equipment; A temperature sensing element, used for being immersed in the liquid to be tested to monitor the temperature of the liquid to be tested; A control component is electrically connected to the socket and the temperature sensing element, and the control component includes an over-temperature protection circuit and / or a timeout protection circuit; the over-temperature protection circuit includes an electrically connected temperature controller and a main contactor, and the temperature controller is used to collect the temperature signal of the temperature sensing element and control the socket to be powered off through the main contactor; the timeout protection circuit includes an electrically connected timing controller and an auxiliary contactor, and the timing controller is also electrically connected to the main contactor, and the timing controller is used to monitor the test time and control the socket to be powered off through the auxiliary contactor and the main contactor.

2. The immersion over-temperature timeout power-off protection device according to claim 1 is characterized in that: Also includes: Antennas, used to send or receive signals; A wireless communication module is electrically connected to the antenna and the socket, and is used to collect a power-on signal or a power-off signal of the socket, and to feed back the power-on signal or the power-off signal to the antenna.

3. The immersion over-temperature timeout power-off protection device according to claim 2 is characterized in that: The communication module includes a 5G communication module.

4. The immersion over-temperature timeout power-off protection device according to claim 3 is characterized in that: It also includes monitoring equipment; The monitoring device is connected to the 5G communication module through a network to collect alarm information and monitoring images.

5. The immersion over-temperature timeout power-off protection device according to claim 1 is characterized in that: The control component also includes: An air switch is arranged in the main circuit where the over-temperature protection circuit and / or the timeout protection circuit are located. The air switch is used to control the power on or off of the main circuit so as to perform automatic power-off protection when the main circuit is short-circuited or under negative pressure.

6. The immersion type over-temperature timeout power-off protection device according to claim 1 is characterized in that: The control component also includes: A temperature control start knob and a temperature control indicator light, wherein the temperature control start knob and the temperature control indicator light are both arranged in the over-temperature protection circuit, the temperature control start knob is used to connect the main circuit and the over-temperature protection circuit, and the temperature control indicator light is used to prompt the working status of the main circuit and the over-temperature protection circuit.

7. The immersion over-temperature timeout power-off protection device according to claim 1 is characterized in that: The control component also includes: A timing start knob and a timing indicator light, wherein the timing start knob and the timing indicator light are both arranged in the timeout protection circuit, the timing start knob is used to connect the main circuit and the timeout protection circuit, and the timing indicator light is used to prompt the working status of the main circuit and the timeout protection circuit.

8. The immersion type over-temperature timeout power-off protection device according to any one of claims 1 to 7, characterized in that: Also includes: The shell is provided with a receiving cavity, the control assembly and the socket are arranged in the receiving cavity; the side wall of the shell is provided with a through hole, the temperature sensing element is passed through the through hole and can be placed outside the shell.

9. The immersion type over-temperature timeout power-off protection device according to claim 8, characterized in that: The housing comprises an upper box and a lower box, wherein the upper box and the lower box are stacked to divide the accommodating cavity into a first chamber and a second chamber; The control component is disposed in any one of the first chamber and the second chamber, and the temperature sensing element is disposed in the other one of the first chamber and the second chamber.

10. A control method for the immersion over-temperature timeout power-off protection device according to any one of claims 1 to 9, characterized in that: include: Determining that the socket is connected to the instrument and powered on, and determining that the temperature sensing element is immersed in the liquid to be measured; Conducting the main circuit and control circuit of the over-temperature protection circuit and / or the timeout protection circuit; The temperature controller collects the temperature signal monitored by the temperature sensing element, and controls the contact action of the main contactor based on the temperature signal to cut off the power supply of the socket; The test time is monitored by the timing controller, and the contact actions of the auxiliary contactor and the main contactor are controlled based on the test time to control the power off of the socket.

11. The control method of the immersion over-temperature timeout power-off protection device according to claim 10, characterized in that: Also includes: The power-on or power-off signal of the socket is collected through the wireless communication module, and the power-on or power-off signal is sent through the antenna.

12. The control method of the immersion over-temperature timeout power-off protection device according to claim 10, characterized in that: Also includes: The alarm information and monitoring screen of the immersion over-temperature timeout power-off protection device are obtained through the monitoring equipment, and the alarm information and monitoring screen are collected through the wireless communication module, and the alarm information and monitoring screen are sent through the antenna.

Images