Thermocouple detection device and temperature measuring device

Abstract

The utility model discloses a thermocouple detection device and a temperature measuring device, and relates to the technical field of circuit detection. The thermocouple comprises a first temperature measuring metal head and a second temperature measuring metal head; the thermocouple detection device comprises a thermocouple socket and an indicating circuit; the thermocouple power strip comprises at least one jack group and electrode groups in one-to-one correspondence with the jack groups. The socket group comprises a first socket and a second socket which are arranged at an interval; the electrode group comprises a first electrode and a second electrode which are insulated from each other; the first jack and the second jack are located on the first surface of the thermocouple socket; the first electrode and the second electrode are positioned in the thermocouple socket; the first temperature measuring metal head is inserted into the first socket and can be in contact with the first electrode; the second temperature measuring metal head is inserted into the second socket and can be in contact with the second electrode; the indicating circuit, the first electrode, the second electrode and the power supply are electrically connected with one another. According to the technical scheme of the utility model, the thermocouple can be effectively protected, and the on-off of the thermocouple can be rapidly detected.

Description

TECHNICAL FIELD

[0001] The embodiment of the utility model relates to the technical field of circuit detection, especially relates to a thermocouple detection device and temperature measuring device. BACKGROUND

[0002] As a commonly used temperature monitoring element, the thermocouple plays an important role in the composite material manufacturing process in the aviation field, especially in the curing forming process of the composite material parts, the thermocouple can monitor the temperature change in real time, and guarantee the product quality and process stability.

[0003] In the curing forming process of the composite material, a proper amount of thermocouples are usually selected for temperature monitoring according to the part configuration and size. In the large-scale production process, the number of thermocouples used every day can be as high as hundreds. In the prior art, a multimeter is mainly used to detect the on-off of the thermocouple to determine whether the thermocouple is normal. However, due to the large number of thermocouples, this detection method is tedious and inefficient. At the same time, in the process of making and transporting the composite material, the thermocouple cannot be effectively protected, and the sharp metal head of the thermocouple is easy to pierce the vacuum bag or be damaged under external force, resulting in temperature measurement failure or affecting the quality of part manufacturing. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of thermocouple detection device and temperature measuring device, to be able to quickly detect thermocouple on-off while effectively protecting thermocouple, improve the reliability and stability of detecting thermocouple.

[0005] The utility model provides a kind of thermocouple detection device in the first aspect, the thermocouple includes thermocouple body, and the first temperature measuring metal head and second temperature measuring metal head of the first surface of the thermocouple body side are set, and the thermocouple detection device includes: thermocouple socket and indicating circuit;

[0006] The thermocouple socket includes opposite first surface and second surface;

[0007] The thermocouple socket includes at least one socket group and at least one electrode group corresponding to at least one socket group;The socket group includes the first socket and the second socket spaced apart, and the electrode group includes the first electrode and the second electrode insulated from each other;The first socket and the second socket are located at the first surface of the thermocouple socket;The first electrode and the second electrode are located in the thermocouple socket;In the direction perpendicular to the first surface, the first socket overlaps with the first electrode, and the second socket overlaps with the second electrode;

[0008] The first socket is used for inserting the first temperature measuring metal head so that the first temperature measuring metal head is in contact with the first electrode; and the second socket is used for inserting the second temperature measuring metal head so that the second temperature measuring metal head is in contact with the second electrode.

[0009] The indicating circuit, the first electrode and the second electrode, and the power supply are electrically connected to each other.

[0010] Optionally, the thermocouple detection device further comprises a housing.

[0011] The housing at least surrounds the side surface of the thermocouple socket; and the side surface of the thermocouple socket intersects with the first surface.

[0012] Optionally, in a direction perpendicular to the first surface, the depth of the housing is greater than the thickness of the thermocouple socket.

[0013] Optionally, the indicating circuit comprises at least one indicating unit corresponding to at least one electrode group.

[0014] The power supply comprises a first power supply end and a second power supply end; and the indicating unit is connected in series with the first electrode and the second electrode between the first power supply end and the second power supply end.

[0015] Optionally, the indicating unit comprises a light emitting element and a protection resistor connected in series.

[0016] Optionally, the thermocouple socket further comprises a battery compartment; an opening of the battery compartment is located on a second surface of the thermocouple socket; and the first surface is opposite to the second surface.

[0017] The battery compartment is used for placing an energy storage battery so that the energy storage battery serves as the power supply to supply power to the indicating circuit.

[0018] Optionally, the thermocouple socket further comprises a mechanical switch.

[0019] The mechanical switch is arranged on the second surface of the thermocouple socket; and the first surface is opposite to the second surface.

[0020] The mechanical switch is electrically connected between the indicating circuit and the power supply, or the mechanical switch is electrically connected between the first electrode or the second electrode and the power supply.

[0021] Optionally, the thermocouple socket further comprises a frame, an upper cover, a lower cover, and a printed circuit board.

[0022] The frame body comprises opposite upper and lower openings; the upper cover covers the upper opening, and the lower cover covers the lower opening, so that the frame body, the upper cover and the lower cover form a closed space; a side surface of the upper cover away from the lower cover is the first surface; a side surface of the lower cover away from the upper cover is a second surface;

[0023] The printed circuit board is located in the closed space and is fixed to a side surface of the lower cover close to the upper cover; the first electrode and the second electrode are both arranged on the printed circuit board; the indication circuit is electrically connected with the first electrode and / or the second electrode through the printed circuit board.

[0024] The utility model discloses a kind of temperature measuring devices, temperature measuring device includes: at least one thermocouple, and thermocouple detection device as described above;

[0025] The thermocouple includes a thermocouple body, and a first temperature measuring metal head and a second temperature measuring metal head disposed on the bottom side surface of the thermocouple body.

[0026] The first temperature measuring metal head and the second temperature measuring metal head of the same thermocouple are inserted into the first socket and the second socket of the same socket group in the thermocouple detection device, respectively, so that the first temperature measuring metal head and the second temperature measuring metal head of the same thermocouple are in contact with the first electrode and the second electrode of the electrode group in the thermocouple detection device, respectively.

[0027] Optionally, the thermocouple further includes a signal output terminal.

[0028] The signal output terminal is disposed on the top surface of the thermocouple body; the bottom side surface is opposite to the top surface.

[0029] The signal output terminal is surrounded by an insulating protective sleeve.

[0030] The technical scheme of the utility model discloses a thermocouple detection device is provided with thermocouple plug row and indicating circuit in it, can judge the on-off state of the thermocouple inserted into the thermocouple plug row through the indicating circuit.

[0031] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the utility model, and is not used to limit the scope of the utility model. Other features of the utility model will become easily understood through the following description. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0033] Figure 1 A structure schematic diagram of a thermocouple provided by the utility model embodiment is shown in the figure.

[0034] Figure 2 A structure schematic diagram of a thermocouple detection device provided by the utility model embodiment is shown in the figure.

[0035] Figure 3 A circuit connection diagram of an indicating circuit provided by the utility model embodiment is shown in the figure.

[0036] Figure 4 Another structure schematic diagram of a thermocouple detection device provided by the utility model embodiment is shown in the figure.

[0037] Figure 5 Another structure schematic diagram of a thermocouple detection device provided by the utility model embodiment is shown in the figure.

[0038] Figure 6 Another circuit connection diagram of the indication circuit provided by the embodiment of the utility model;

[0039] Figure 7 Another circuit connection diagram of the indication circuit provided by the embodiment of the utility model;

[0040] Figure 8 The structure diagram of another thermocouple detection device provided by the embodiment of the utility model;

[0041] Figure 9 The structure diagram of a temperature measuring device provided by the embodiment of the utility model;

[0042] Figure 10 The structure diagram of another thermocouple provided by the embodiment of the utility model. DETAILED DESCRIPTION

[0043] In order to make the person skilled in the art better understand the utility model scheme, the technical scheme in the embodiment of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiment of the utility model, obviously, the described embodiment is only a part of the embodiment of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor should belong to the scope of protection of the utility model.

[0044] It should be noted that the terms "first", "second" and the like in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to the clearly listed steps or units, but can include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0045] Figure 1 The structure diagram of a thermocouple provided by the embodiment of the utility model is shown in the figure. Figure 1 As shown, the thermocouple includes a thermocouple body 00, and a first temperature measuring metal head 01 and a second temperature measuring metal head 02 arranged on one side surface of the thermocouple body 00.

[0046] The first temperature measuring metal head 01 and the second temperature measuring metal head 02 are composed of two different metal materials, for example, the metal materials can be nickel-chromium alloy or nickel-silicon alloy. Specifically, the first temperature measuring metal head 01 and the second temperature measuring metal head 02 in the thermocouple jointly form a hot end, and the first temperature measuring metal head 01 and the second temperature measuring metal head 02 are connected to a measuring circuit arranged in the thermocouple body 00 through lead wires, and the connection points of the measuring circuit and the first temperature measuring metal head 01 and the second temperature measuring metal head 02 form a cold end. When the temperature is detected by the thermocouple, because the metal materials of the first temperature measuring metal head 01 and the second temperature measuring metal head 02 are different, an electric potential difference can be formed between the first temperature measuring metal head 01 and the second temperature measuring metal head 02, which is proportional to the temperature difference between the hot end and the cold end of the thermocouple, and a voltage signal proportional to the electric potential difference between the first temperature measuring metal head 01 and the second temperature measuring metal head 02 is generated in the measuring circuit. The measuring circuit can calculate the actual temperature value of the hot end by reading the voltage signal and combining the known temperature of the cold end, so that the thermocouple can realize rapid and accurate temperature detection, thereby providing reliable temperature data support for temperature monitoring in the composite material manufacturing process.

[0047] Figure 2 A structural schematic view of a thermocouple detection device provided by the embodiment of the utility model, Figure 3 A circuit connection diagram of an indicating circuit provided by the embodiment of the utility model is shown in Figure 2 And Figure 3 As shown in the figure, the thermocouple detection device comprises a thermocouple socket and an indicating circuit; the thermocouple socket comprises opposite first and second surfaces 11 and 12; the thermocouple socket comprises at least one socket group 2 and at least one electrode group 3 corresponding to the at least one socket group 2; the socket group 2 comprises first and second sockets 21 and 22 arranged at intervals, and the electrode group 3 comprises first and second electrodes 31 and 32 insulated from each other; the first and second sockets 21 and 22 are located on the first surface of the thermocouple socket; the first and second electrodes 31 and 32 are located in the thermocouple socket; in the direction perpendicular to the first surface, the first socket 21 overlaps the first electrode 31, and the second socket 22 overlaps the second electrode 32; the first socket 21 is used for inserting the first temperature measuring metal head 01 so that the first temperature measuring metal head 01 contacts the first electrode 31; the second socket 22 is used for inserting the second temperature measuring metal head 02 so that the second temperature measuring metal head 02 contacts the second electrode 32; the indicating circuit, the first and second electrodes 31 and 32, and the power supply 4 are electrically connected to each other.

[0048] The thermocouple socket 1 is provided with Figure 3The indication circuit is shown, so that the thermocouple detection device can judge the on-off state of the thermocouple inserted into the thermocouple socket 1 through the indication circuit. Specifically, the thermocouple socket 1 includes opposite first surface 11 and second surface 12, the first surface 11 can be the top surface of the thermocouple socket 1, and the second surface 12 can be the bottom surface of the thermocouple socket 1, and the first surface 11 of the thermocouple socket 1 includes one or more socket groups 2, and the socket group 2 includes a first socket 21 and a second socket 22 arranged at intervals. The number of socket groups 2 can be specifically set according to actual needs, and the utility model does not make specific limitation on this. The first socket 21 is arranged corresponding to the first temperature measuring metal head 01, and the second socket 22 is arranged corresponding to the second temperature measuring metal head 02, that is, the interval distance between the first socket 21 and the second socket 22 is consistent with the interval distance of the first temperature measuring metal head 01 and the second temperature measuring metal head 02 on the side surface of the thermocouple body 00, so that the first temperature measuring metal head 01 and the second temperature measuring metal head 02 of the thermocouple can be inserted into the first socket 21 and the second socket 22 respectively.

[0049] In addition, one or more electrode groups 3 corresponding to the socket group 2 are also arranged in the thermocouple socket 1, and the electrode group 3 includes a first electrode 31 and a second electrode 32 insulated from each other, that is, the first electrode 31 is arranged corresponding to the first socket 21, and the second electrode 32 is arranged corresponding to the second socket, and in the direction perpendicular to the first surface, the first socket 21 overlaps the first electrode 31, and the second socket 22 overlaps the second electrode 32, so that the first temperature measuring metal head 01 can contact the first electrode 31 after being inserted into the first socket 21, and the second temperature measuring metal head 02 can contact the second electrode 32 after being inserted into the second socket 22. The first electrode 31 and the second electrode 32 are electrically connected with the indication circuit, so that the first temperature measuring metal head 01 and the second temperature measuring metal head 02 can be electrically connected with the indication circuit after being inserted into the first socket 21 and the second socket 22 respectively, so that the on-off state of the thermocouple inserted into the thermocouple socket 1 can be judged according to the on-off state of the indication circuit, and the first electrode 31 and the second electrode 32 are insulated from each other, which can prevent the first electrode 31 and the second electrode 32 from being directly conducted, thereby avoiding the short circuit phenomenon and ensuring the safe operation of the indication circuit.

[0050] It can be understood that, continuing to refer to Figure 2 When the first surface 11 of the thermocouple socket 1 includes a plurality of socket groups 2, that is, the first surface 11 of the thermocouple socket 1 includes a plurality of first sockets 21 and a plurality of second sockets 22, a plurality of thermocouples can be inserted into the thermocouple socket 1 at the same time, so that the thermocouple detection device can detect the on-off state of a plurality of thermocouples at the same time, and the detection efficiency of detecting the thermocouple is improved.

[0051] The indication circuit can be understood as a circuit for directly displaying the on-off state of the thermocouple. For example, the indication circuit can display the on-off state of the thermocouple electrically connected to the indication circuit through sound indication, visual indication or remote feedback. The indication circuit, the first electrode 31 and the second electrode 32 are electrically connected with the power supply 4, so that the power supply 4 can provide power support for the indication circuit, ensuring the continuous and stable operation of the indication circuit. The indication circuit can quickly determine the on-off state of the thermocouple, significantly improving the detection efficiency of the thermocouple. At the same time, when multiple thermocouples are inserted into the thermocouple socket 1 at the same time, the indication circuit can detect the on-off state of multiple thermocouples at the same time, improving the efficiency and reliability of the detection of the thermocouple.

[0052] In addition, the first temperature measuring metal head 01 and the second temperature measuring metal head 02 of the thermocouple are respectively the positive and negative poles of the thermocouple, and their shapes are different. For example, the first temperature measuring metal head 01 can be a round plug, and the second temperature measuring metal head 02 can be a square plug. Correspondingly, the first socket 21 and the second socket 22 are also socket structures matched with the shapes of the temperature measuring metal heads. For example, the first socket 21 is a round socket matched with the first temperature measuring metal head 01, and the second socket 22 is a square socket matched with the second temperature measuring metal head 02, thereby ensuring the stability of the thermocouple 00 during insertion, preventing the positive and negative poles from being connected in reverse or the plug from loosening, and improving the accuracy of the detection of the thermocouple.

[0053] It can also be understood that the thermocouple socket 1 can also effectively physically fix the thermocouple, thereby protecting the thermocouple. Specifically, when the first temperature measuring metal head 01 and the second temperature measuring metal head 02 are respectively inserted into the first socket 21 and the second socket 22, the bottom of the thermocouple will be firmly embedded in the thermocouple socket 1, avoiding the risk of damage to the thermocouple due to external impact or vibration during detection, thereby improving the safety and reliability of the detection of the thermocouple.

[0054] In the embodiment, the thermocouple detection device is provided with a thermocouple socket and an indication circuit, so that the indication circuit can determine the on-off state of the thermocouple inserted into the thermocouple socket. At the same time, at least one socket group is arranged on the first surface of the thermocouple socket, the socket group includes a first socket and a second socket arranged at intervals, and at least one electrode group corresponding to the socket group is arranged in the thermocouple socket, the electrode group includes a first electrode and a second electrode insulated from each other, so that the first temperature measuring metal head of the thermocouple can contact the first electrode after being inserted into the first socket, and the second temperature measuring metal head of the thermocouple can contact the second electrode after being inserted into the second socket, so that the thermocouple socket can effectively physically fix the thermocouple, and the safety and reliability of the thermocouple detection are improved. In addition, the first temperature measuring metal head and the second temperature measuring metal head are electrically connected to the indication circuit after being inserted into the first socket and the second socket respectively by arranging the indication circuit, the first electrode and the second electrode and the power supply, so that the on-off state of the thermocouple inserted into the thermocouple socket can be determined according to the on-off state of the indication circuit, and the detection efficiency of the thermocouple is significantly improved.

[0055] Optionally, as shown in Figure 4 The thermocouple protection device further comprises a shell 5 surrounding at least the side surface of the thermocouple socket 1, and the side surface of the thermocouple socket 1 intersects with the first surface 11.

[0056] Specifically, the shell 5 surrounds at least the side surface of the thermocouple socket 1, and the side surface of the thermocouple socket 1 intersects with the first surface 11, that is, the shell 5 covers the outside of the thermocouple socket 1, and the thermocouple socket 1 is arranged in the nested manner in the inside of the shell 5, so that the shell 5 can provide all-round physical protection for the thermocouple inserted into the thermocouple socket 1. For example, the material of the shell 5 can be silica gel, and the density of the silica gel material is relatively low, so that the shell 5 can provide protection for the thermocouple socket 1 without significantly increasing the overall weight of the thermocouple detection device, facilitating the carrying and arrangement of the thermocouple detection device. At the same time, in the composite material manufacturing process, the thermocouple detection device usually needs to be placed on the surface of the vacuum bag of the part, so that the thermocouple can monitor the temperature change in the curing process of the composite material part in real time. Therefore, the light silica gel material of the shell 5 can prevent the relatively sharp first temperature measuring metal head 01 and the second temperature measuring metal head 02 of the thermocouple from damaging the lower vacuum bag of the part. In addition, the silica gel material has good wear resistance, which can effectively prevent the surface of the thermocouple detection device from being scratched or worn during the movement or vibration of the thermocouple detection device, thereby improving the safety and accuracy of the detection of the thermocouple.

[0057] Optionally, in the direction perpendicular to the first surface 11, the depth of the shell 5 is greater than the thickness of the thermocouple socket 1.

[0058] Specifically, in the direction perpendicular to the first surface 11 of the thermocouple plug-in row 1, the depth of the shell 5 is greater than the thickness of the thermocouple plug-in row 1, so that when the first temperature measuring metal head 01 and the second temperature measuring metal head 02 of the thermocouple are inserted into the first socket 21 and the second socket 22 respectively, the shell 5 can cover at least part of the thermocouple body, thereby effectively preventing the thermocouple body from being damaged due to collision, extrusion or falling during detection of the thermocouple by the thermocouple detection device, providing a strong guarantee for efficient and reliable operation of the thermocouple detection device, and further improving the safety and accuracy of the detection of the thermocouple.

[0059] Optionally, Figure 5 Another structure diagram of a thermocouple detection device provided by the embodiment of the utility model, Figure 6 Another circuit connection diagram of an indication circuit provided by the embodiment of the utility model. As Figure 5 And Figure 6 Indicated, the indication circuit includes at least one indication unit 6 corresponding to at least one electrode group 3; the power supply 4 includes a first power supply end 41 and a second power supply end 42; the indication unit 6 and the first electrode 31 and the second electrode 32 are connected in series between the first power supply end 41 and the second power supply end 42.

[0060] Among them, the indication unit 6 can be understood as an indication device that can intuitively display the on-off state of the thermocouple, for example, the indication unit 6 can be a sound indication unit, when detecting the on-off state of the thermocouple, the indication unit 6 can emit different sound signals; the indication unit 6 can also be a visual indication unit, when detecting the on-off state of the thermocouple, the indication unit 6 can display the on-off state of the thermocouple through a number tube, a light-emitting diode or on a liquid crystal display; the indication unit 6 can also be a remote feedback unit, when detecting the on-off state of the thermocouple, the indication unit 6 can feed back the on-off state of the thermocouple to a remote device to display the on-off state of the thermocouple. The indication circuit includes one or more indication units 6, and the indication unit 6 is set one by one corresponding to the electrode group 3, that is, the number of indication units 6 is consistent with the number of first electrodes 31 and second electrodes 32, and each indication unit 6 can independently display the on-off state of each thermocouple inserted in each first socket 21 and each second socket 22.

[0061] Among them, the first power supply end 41 of the power supply 4 can be a positive power supply end, the second power supply end 42 of the power supply 4 can be a negative power supply end, and the indication unit 6 and the first electrode 31 and the second electrode 32 are connected in series between the first power supply end 41 and the second power supply end 42, so that the power supply 4 can provide power support for the indication circuit.

[0062] Specifically, continue to refer to Figure 6The indicating unit 6 is connected in series between the first electrode 31 and the first power terminal 41, and the second electrode 32 is electrically connected with the second power terminal 42. If the thermocouple in contact with the first electrode 31 and the second electrode 32 is in a conduction state, the indicating circuit is turned on, so that the indicating circuit can supply power to the indicating unit 6, and the indicating unit 6 can display that the thermocouple is in a normal conduction state at this time. If the thermocouple in contact with the first electrode 31 and the second electrode 32 has a fault or is disconnected, no current flows in the indicating circuit, and the indicating unit 6 cannot be powered, so that the indicating unit 6 can display that the thermocouple may have a fault or be disconnected at this time, and the thermocouple needs to be repaired to avoid that the thermocouple that has failed is used in the composite material manufacturing process. The indicating unit 6 can quickly judge the on-off state of the thermocouple, and significantly improves the detection efficiency of the thermocouple. In addition, by one-to-one correspondence between the indicating unit 6 and the electrode group 3, the on-off states of multiple thermocouples can be detected at the same time, and the efficiency and reliability of detecting the thermocouple are improved.

[0063] Optionally, continuing to refer to Figure 6 The indicating unit 6 includes a light-emitting element and a protection resistor connected in series.

[0064] The light-emitting element can be understood as an indicating device that can emit light in the on state of the indicating circuit, and is used to directly display the on-off state of the thermocouple. For example, the light-emitting element can be a light-emitting diode (LED). Specifically, the light-emitting element is connected in series between the first electrode 31 and the first power terminal 41. If the thermocouple in contact with the first electrode 31 and the second electrode 32 is in a conduction state, the indicating circuit is turned on, so that the indicating circuit can supply power to the light-emitting element, the light-emitting element emits light, and indicates that the thermocouple is in a normal conduction state at this time. If the thermocouple in contact with the first electrode 31 and the second electrode 32 has a fault or is disconnected, no current flows in the indicating circuit, and the light-emitting element cannot be powered, and the light-emitting element remains extinguished, indicating that the thermocouple may have a fault or be disconnected at this time. The on-off state of the light-emitting element can be used to quickly judge the on-off state of the thermocouple, and significantly improve the detection efficiency of the thermocouple. In addition, the light-emitting element can be arranged on the second surface 12 of the thermocouple socket 1, so that the first surface 11 of the thermocouple socket 1 is an operation area for plugging and unplugging the thermocouple, and the second surface 12 of the thermocouple socket 1 is an observation area, which is helpful for the operator to observe the on-off state of the light-emitting element more conveniently, so as to quickly and directly understand the on-off state of the thermocouple. The protection resistor is connected in series with the light-emitting element, which is used to effectively limit the current flowing through the light-emitting element, prevent the light-emitting element from being burned out due to too large current flowing through the light-emitting element, and improve the safety and reliability of detecting the thermocouple.

[0065] It can also be understood that a plurality of detection branches can be included in the indicating circuit, and one light-emitting element, one first electrode 31 and one second electrode 32 can be respectively arranged in each detection branch. For example, continuing to refer to Figure 6 , the indicating circuit includes four detection branches, and the light-emitting element includes a first light-emitting diode U1, a second light-emitting diode U2, a third light-emitting diode U3 and a fourth light-emitting diode U4; the first electrode 31 includes a first first electrode 311, a second first electrode 312, a third first electrode 313 and a fourth first electrode 314; and the second electrode 32 includes a first second electrode 321, a second second electrode 322, a third second electrode 323 and a fourth second electrode 324. In the first detection branch, the first light-emitting diode U1 is electrically connected with the first first electrode 311; in the second detection branch, the second light-emitting diode U2 is electrically connected with the second first electrode 312; in the third detection branch, the third light-emitting diode U3 is electrically connected with the third first electrode 313; and in the fourth detection branch, the fourth light-emitting diode U4 is electrically connected with the fourth first electrode 314, so that the on-off state of the thermocouple in contact with the first electrode 31 and the second electrode 32 in each detection branch can be judged according to the bright-dark state of the light-emitting element in the detection branch. In addition, the detection branches are connected in parallel, so that each light-emitting element can independently display the on-off state of the thermocouple in contact with the first electrode 31 and the second electrode 32 in each detection branch, so that the thermocouple detection device can simultaneously detect the on-off state of multiple thermocouples, improving the efficiency and reliability of thermocouple detection.

[0066] At the same time, the protection resistor is connected in series with the light-emitting element one by one, that is, the number of protection resistors is consistent with the number of light-emitting elements. For example, continuing to refer to Figure 6 , the protection resistor includes a first protection resistor R1, a second protection resistor R2, a third protection resistor R3 and a fourth protection resistor R4, and in the first detection branch, the first protection resistor R1 is connected in series with the first light-emitting diode U1; in the second detection branch, the second protection resistor R2 is connected in series with the second light-emitting diode U2; in the third detection branch, the third protection resistor R3 is connected in series with the third light-emitting diode U3; and in the fourth detection branch, the fourth protection resistor R4 is connected in series with the fourth light-emitting diode U4, so that the protection resistor can effectively prevent damage to the light-emitting element caused by excessive current, improve the safety and service life of the indicating circuit, and enable the thermocouple detection device to maintain reliable indication of the on-off state of the thermocouple in different use scenarios.

[0067] Optionally, continuing to refer to Figure 5 and Figure 6The thermocouple socket 1 further comprises a battery compartment 401; the opening of the battery compartment 401 is located on the second surface 12 of the thermocouple socket 1; the first surface 11 is opposite to the second surface 12; the battery compartment 401 is used to place an energy storage battery, so that the energy storage battery serves as the power supply 4 to supply power to the indication circuit.

[0068] The opening of the battery compartment 401 is used to place an energy storage battery to provide power support for the indication circuit. For example, the energy storage battery can be a lithium ion battery, a nickel-hydrogen battery, or a dry battery, etc. The battery compartment 401 can further comprise a battery cover plate and a screw socket. After the energy storage battery is placed in the opening of the battery compartment 401, the battery cover plate can be fixed to the opening of the battery compartment by inserting a fixing screw into the screw socket on the battery cover plate. The screw socket provides a stable mechanical connection, ensuring that the energy storage battery will not loosen or fall off during the detection of the thermocouple by the thermocouple detection device, thereby improving the accuracy and stability of the detection of the thermocouple. In addition, by setting the opening of the battery compartment 401 on the second surface 12 opposite to the first surface 11 of the thermocouple socket 1, the operator does not need to disassemble the entire thermocouple socket 1, but only needs to open the battery cover plate to conveniently replace the battery, thereby improving the operation convenience of the thermocouple detection device.

[0069] Specifically, continuing to refer to Figure 6 The first power supply end 41 of the power supply 4 is electrically connected to the first light-emitting diode U1, the second light-emitting diode U2, the third light-emitting diode U3, and the fourth light-emitting diode U4, and the second power supply end 42 of the power supply 4 is electrically connected to the first second electrode 321, the second second electrode 322, the third second electrode 323, and the fourth second electrode 324, so that the power supply 4 can provide power support for the indication circuit, ensuring the continuous and stable operation of the indication circuit.

[0070] Optionally, continuing to refer to Figure 5 , Figure 6 and Figure 7 The thermocouple socket 1 further comprises a mechanical switch 7; the mechanical switch 7 is arranged on the second surface 12 of the thermocouple socket 1; the first surface 11 is opposite to the second surface 12; the mechanical switch 7 is electrically connected between the indication circuit and the power supply 4, or the mechanical switch 7 is electrically connected between the first electrode 31 or the second electrode 32 and the power supply 4.

[0071] The mechanical switch 7 is used to cut off or connect the current path in the indicating circuit, so as to control whether the indicating circuit is electrically connected with the power supply 4. When the thermocouple detection device is not in use, the mechanical switch 7 is turned off to cut off the power supply, so as to avoid the battery from being exhausted due to long-time power-on, thereby prolonging the standby time and service life of the thermocouple detection device. For example, the mechanical switch 7 can be a toggle switch, which includes a control rod or slider that can be manually toggled to control the on-off of the indicating circuit. In addition, the mechanical switch 7 is arranged on the second surface 12 opposite to the first surface 11 of the thermocouple socket 1, so as to facilitate the operator to directly contact and operate.

[0072] In an exemplary embodiment, the mechanical switch 7 is electrically connected between the indicating circuit and the power supply 4. With reference back to Figure 6 , the first end of the mechanical switch 7 is electrically connected with the first light-emitting diode U1, the second light-emitting diode U2, the third light-emitting diode U3 and the fourth light-emitting diode U4, and the second end of the mechanical switch 7 is electrically connected with the first power supply end 41 of the power supply 4. In another exemplary embodiment, the mechanical switch 7 is electrically connected between the first electrode 31 or the second electrode 32 and the power supply 4. With reference back to Figure 7 , the first end of the mechanical switch 7 is electrically connected with the second power supply end 42 of the power supply 4, and the second end of the mechanical switch 7 is electrically connected with the first second electrode 321, the second second electrode 322, the third second electrode 323 and the fourth second electrode 324. When the mechanical switch 7 is closed, the power supply 4 can supply power to the indicating circuit, so that each light-emitting element can independently display the on-off state of the thermocouple in contact with the first electrode 31 and the second electrode 32 in each detection branch, and the thermocouple detection device can simultaneously detect the on-off states of multiple thermocouples. When the mechanical switch 7 is turned off, the power supply 4 cannot supply power to the indicating circuit, and the thermocouple detection device is in standby state.

[0073] Optionally, as shown in Figure 8 , the thermocouple socket 1 further includes a frame 801, an upper cover 802, a lower cover 803 and a printed circuit board 9. The frame 801 includes opposite upper and lower openings. The upper cover 802 covers the upper opening, and the lower cover 803 covers the lower opening, so that the frame 801, the upper cover 802 and the lower cover 803 form a closed space. The side surface of the upper cover 802 away from the lower cover 803 is the first surface 11. The side surface of the lower cover 803 away from the upper cover 802 is the second surface 12. The printed circuit board 9 is located in the closed space and is fixed to the side surface of the lower cover 803 close to the upper cover 802. The first electrode 31 and the second electrode 32 are arranged on the printed circuit board 9. The indicating circuit is electrically connected with the first electrode 31 and / or the second electrode 32 through the printed circuit board 9.

[0074] The upper cover 802 covers the upper opening of the frame 801, and the lower cover 803 covers the lower opening of the frame 801, so that the thermocouple plug-in row 1 forms a closed space through the frame 801, the upper cover 802 and the lower cover 803, thereby ensuring the structural stability of the thermocouple plug-in row 1. Meanwhile, the side surface of the upper cover 802 away from the lower cover 803 is the first surface 11 of the thermocouple plug-in row 1, and the side surface of the lower cover 803 away from the upper cover 802 is the second surface 12 of the thermocouple plug-in row 1. The first surface 11 of the thermocouple plug-in row 1 can be an operation area for plugging and unplugging the thermocouple, and the second surface 12 of the thermocouple plug-in row 1 can be an observation area for observing the on-off state of the light-emitting elements.

[0075] The printed circuit board 9 can be specifically understood as being arranged in the closed space of the thermocouple plug-in row 1 and being fixed to the side surface of the lower cover 803 close to the upper cover 802, and is used to realize the electrical connection between the electronic components in the indicating circuit. Specifically, the printed circuit board 9 can include at least one connection point group 10, which can be specifically understood as a specific area on the printed circuit board 9 for realizing electrical connection. For example, the connection point group 10 can be a metal pad or a pin hole. For example, the printed circuit board 9 can include one or more connection point groups 10, and the connection point groups 10 are arranged one by one with the electrode groups 3, that is, the number of the connection point groups 10 is consistent with the number of the electrode groups 3. The connection point group 10 can include a first connection point 101 and a second connection point 102. By arranging the first electrode 31 to contact the first connection point 101 and the second electrode 32 to contact the second connection point 102, the first temperature measuring metal head 01 of the thermocouple can contact the first connection point 101 after being inserted into the first socket 21, and the second temperature measuring metal head 02 of the thermocouple can contact the second connection point 102 after being inserted into the second socket 22. The first connection point 101 and the indicating circuit are connected through the lead on the printed circuit board 9, so that the first temperature measuring metal head 01 and the second temperature measuring metal head 02 can be electrically connected to the indicating circuit after being inserted into the first socket 21 and the second socket 22, respectively. In addition, the second connection point 102 and the second end 42 of the power supply 4 are connected through the lead on the printed circuit board 9, so that the power supply 4 can supply power to the indicating circuit. It can also be understood that the connection point group 10 can also include a third connection point and a fourth connection point. The mechanical switch 7 can be electrically connected to the first end 41 of the power supply 4 through the third connection point and electrically connected to the indicating circuit through the fourth connection point, so that each light-emitting element in the indicating circuit can independently display the on-off state of the thermocouple in contact with the first electrode 31 and the second electrode 32 in each detection branch. The thermocouple detection device can simultaneously detect the on-off state of multiple thermocouples, thereby improving the detection efficiency of the thermocouple detection. The electrical connection of the electronic components in the indicating circuit through the printed circuit board helps to improve the stability of the indicating circuit, and helps to simplify the internal wiring of the thermocouple plug-in row, thereby improving the safety and reliability of the thermocouple detection.

[0076] In addition, the upper cover 802 of the thermocouple socket 1 can include a first threaded hole, and the lower cover 803 of the thermocouple socket 1 can include a second threaded hole, so that the upper cover 803 and the lower cover 803 are stably connected to the upper and lower sides of the frame body 801 by passing a fixing screw through the first threaded hole and the second threaded hole, thereby improving the structural stability of the thermocouple detection device.

[0077] Based on the same utility model concept, the utility model embodiment further provides a temperature measuring device, as shown in the drawings, the temperature measuring device comprises at least one thermocouple and the thermocouple detection device of the above embodiment; the thermocouple comprises a thermocouple body 00 and a first temperature measuring metal head 01 and a second temperature measuring metal head 02 arranged on the bottom side surface of the thermocouple body 00; the first temperature measuring metal head 01 and the second temperature measuring metal head 02 of the same thermocouple are inserted into the first socket 21 and the second socket 22 of the same socket group 2 in the thermocouple detection device respectively, so that the first temperature measuring metal head 01 and the second temperature measuring metal head 02 of the same thermocouple are in contact with the first electrode 31 and the second electrode 32 of the electrode group 3 in the thermocouple detection device respectively. Figure 9

[0078] Wherein, the temperature measuring device can include one or more thermocouples, and the specific number of thermocouples can be determined according to actual needs, and the utility model does not make specific limitation. The thermocouple can realize rapid and accurate temperature detection through the first temperature measuring metal head 01 and the second temperature measuring metal head 02 arranged on the bottom side surface of the thermocouple body 00. The first socket 21 and the second socket 22 in the temperature measuring device are correspondingly arranged with the first temperature measuring metal head 01 and the second temperature measuring metal head 02, and the first electrode 31 and the second electrode 32 are correspondingly arranged with the first socket 21 and the second socket, so that the first temperature measuring metal head 01 can be in contact with the first electrode 31 after being inserted into the first socket 21, and the second temperature measuring metal head 02 can be in contact with the second electrode 32 after being inserted into the second socket 22, and the first temperature measuring metal head 01 and the second temperature measuring metal head 02 can be electrically connected with the indicating circuit after being inserted into the first socket 21 and the second socket 22 respectively, so as to judge the on-off state of the thermocouple inserted into the temperature measuring device according to the on-off state of the indicating circuit.

[0079] Optionally, as shown in the drawings, the thermocouple further comprises a signal output terminal 03; the signal output terminal 03 is arranged on the top surface of the thermocouple body 00; the bottom side surface is opposite to the top surface; and the signal output terminal 03 is wrapped with an insulating protective sleeve 031. Figure 10

[0080] ​​The signal output terminal 03 is arranged on the top surface opposite to the bottom surface of the thermocouple body 00, that is, the signal output terminal 03 is located on the opposite side of the thermocouple body 00 with the first temperature measuring metal head 01 and the second temperature measuring metal head 02 respectively. The signal output terminal 03 is used to transmit the temperature information detected by the first temperature measuring metal head 01 and the second temperature measuring metal head 02 to an external data acquisition device, a display device or a control system, so as to realize real-time monitoring and processing of temperature data. The insulating protective sleeve 031 is wrapped outside the signal output terminal 03, so as to effectively prevent the metal object or conductive medium in the external environment from contacting the signal output terminal 03, thereby avoiding short circuit, signal interference or static damage, and providing mechanical protection for the signal output terminal 03, preventing the signal output terminal 03 from being bent and damaged under stress, thereby improving the safety and stability of the thermocouple.

[0081] Therefore, the temperature measuring device provided by the embodiment has the structure and working of the thermocouple detection device of the above embodiment, can achieve the effect of the thermocouple detection device of the above embodiment, and the same parts can refer to the description above, which will not be described here.

[0082] The above specific embodiments do not constitute a limitation on the protection scope of the utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A thermocouple detection device, characterized by, The thermocouple comprises a thermocouple body, a first temperature measuring metal head and a second temperature measuring metal head arranged on one side surface of the thermocouple body, and the thermocouple detection device comprises a thermocouple socket and an indicating circuit; The thermocouple socket comprises opposite first and second surfaces; The thermocouple socket comprises at least one socket group and at least one electrode group corresponding to the at least one socket group; the socket group comprises a first socket and a second socket arranged at intervals; the electrode group comprises a first electrode and a second electrode insulated from each other; the first and second sockets are located on the first surface of the thermocouple socket; the first and second electrodes are located in the thermocouple socket; in a direction perpendicular to the first surface, the first socket overlaps the first electrode, and the second socket overlaps the second electrode; The first socket is used for inserting the first temperature measuring metal head so that the first temperature measuring metal head is in contact with the first electrode; and the second socket is used for inserting the second temperature measuring metal head so that the second temperature measuring metal head is in contact with the second electrode; The indicating circuit, the first and second electrodes, and a power supply are electrically connected to each other.

2. The thermocouple detection apparatus according to claim 1, characterized by Further comprising: a housing; The housing at least surrounds the side surface of the thermocouple socket; the side surface of the thermocouple socket intersects with the first surface.

3. The thermocouple detection apparatus of claim 2, wherein In a direction perpendicular to the first surface, the depth of the housing is greater than the thickness of the thermocouple socket.

4. The thermocouple detection apparatus of claim 1, wherein The indicating circuit comprises at least one indicating unit corresponding to at least one electrode group; The power supply comprises a first power supply end and a second power supply end; the indicating unit is connected in series between the first power supply end and the second power supply end with the first and second electrodes.

5. The thermocouple detection apparatus of claim 4, wherein The indicating unit comprises a light-emitting element and a protection resistor connected in series.

6. The thermocouple detection apparatus of claim 1, wherein The thermocouple socket further comprises a battery compartment; an opening of the battery compartment is located on the second surface of the thermocouple socket; the first surface is opposite to the second surface; The battery compartment is used for placing an energy storage battery so that the energy storage battery serves as the power supply to supply power to the indicating circuit.

7. The thermocouple detection apparatus of claim 1, wherein The thermocouple socket further comprises a mechanical switch; The mechanical switch is arranged on the second surface of the thermocouple socket; the first surface is opposite to the second surface; The mechanical switch is electrically connected between the indicating circuit and the power supply, or the mechanical switch is electrically connected between the first or second electrode and the power supply.

8. The thermocouple detection apparatus of claim 1, wherein The thermocouple socket further comprises a frame, an upper cover, a lower cover, and a printed circuit board; The frame comprises opposite upper and lower openings; the upper cover covers the upper opening, and the lower cover covers the lower opening, so that the frame, the upper cover, and the lower cover form an enclosed space; The side surface of the upper cover away from the lower cover is the first surface; The side surface of the lower cover away from the upper cover is the second surface; The printed circuit board is located in the closed space and fixed to the lower cover near the side surface of the upper cover; the first electrode and the second electrode are arranged on the printed circuit board; the indicating circuit is electrically connected with the first electrode and / or the second electrode through the printed circuit board.

9. A temperature measuring device, characterized by The application further discloses a thermocouple detection device and a thermocouple detection system. The thermocouple detection device comprises at least one thermocouple and the thermocouple detection device as claimed in any one of claims 1 to 8. The thermocouple comprises a thermocouple body, a first temperature measuring metal head and a second temperature measuring metal head arranged on the bottom side surface of the thermocouple body. The first temperature measuring metal head and the second temperature measuring metal head of the same thermocouple are respectively inserted into a first socket and a second socket of the same socket group in the thermocouple detection device, so that the first temperature measuring metal head and the second temperature measuring metal head of the same thermocouple are respectively in contact with a first electrode and a second electrode of an electrode group in the thermocouple detection device.

10. The temperature measuring device according to claim 9, characterized in that The thermocouple further comprises a signal output terminal. The signal output terminal is arranged on the top surface of the thermocouple body; the bottom side surface is opposite to the top surface. An insulating protective sleeve is wrapped around the signal output terminal.

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