Portable temperature signal acquisition equipment for temperature field of marine engine heated part

Abstract

The utility model belongs to the marine engine temperature acquisition technology, and particularly relates to a portable marine engine heated part temperature field temperature signal acquisition device, which is characterized in that cables of eight thermocouples are integrated on a plug female terminal, the plug female terminal is electrically connected with a plug male terminal, the plug male terminal is electrically connected with one end of an extension line, and the other end of the extension line is connected with a temperature sensor. The other end of the extension line is electrically connected with the input end of an eight-channel acquisition module; the output ends of the plurality of eight-channel acquisition modules are connected in series with each other, and the terminal joint of the connecting line connected in series is electrically connected with the 9-pin DSUB joint with the power supply; and the 9-pin DSUB joint is electrically connected with the PLC module. According to the utility model, signal acquisition of a plurality of temperature test points of a temperature field is completed, and a compensation cable does not need to be prolonged; eight channels on the acquisition module are utilized to the greatest extent; the usage amount of serial bus interfaces of a computer and CAN cards of an acquisition module is reduced; through the plug, rewiring is not needed when the thermocouple is replaced.

Description

Technical Field

[0001] The utility model relates to a temperature acquisition technology for a marine engine, in particular to a portable temperature signal acquisition device for a temperature field of a heated part of a marine engine. Background Art

[0002] During the test of marine engines, it is necessary to collect temperature data of the temperature field of the engine's heated parts, which is of great significance for the accurate prediction and reasonable control of the heat transfer state of the engine cooling system. At the same time, the analysis and research results of the temperature field distribution of the heated parts can provide a basis for the optimal design of the cooling cavity of the heated parts, improve the external thermal environment of the heated parts, and thus increase the service life of the engine.

[0003] Limited by the working environment of the marine engine, the installation position of the heated parts of the marine engine, and the length of the thermocouple compensation cable, and other tests are performed simultaneously during the temperature field test of the heated parts of the engine, if the traditional thermocouple temperature acquisition module is used to directly connect the wires on the acquisition module, the length of the thermocouple compensation cable may not be long enough, and some acquisition channels may be idle. If the length of the compensation cable is extended, the resistance value in the acquisition circuit will increase, affecting the acquisition accuracy. At the same time, the environment on the marine host is complex, and the overlong compensation cable will increase the risk of cable damage. After the temperature signal is collected by the module to the acquisition software, it will occupy a serial bus interface on the computer, and replacing the thermocouple of the heated part of the test host requires rewiring, which is time-consuming and laborious. In addition, the acquisition module needs power supply, and sometimes it is difficult to power supply due to the distance problem of the socket during on-site testing. Utility Model Content

[0004] The utility model aims to solve the technical problems existing in the background technology, and for this purpose, provides a portable temperature signal acquisition device for the temperature field of a heated part of a marine engine.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0006] A portable temperature signal acquisition device for the temperature field of a heated part of a marine engine comprises a thermocouple, a plug, an extension cord, an 8-channel acquisition module and a PLC module; the cable of the 8-way thermocouple is integrated into the female terminal of the plug, the female terminal of the plug is electrically connected to the male terminal of the plug, the male terminal of the plug is electrically connected to one end of the extension cord, and the other end of the extension cord is electrically connected to the input end of an 8-channel acquisition module; the output ends of multiple 8-channel acquisition modules are connected in series and the terminal connector of the connecting wires connected in series is electrically connected to a 9-pin DSUB connector with a power supply, and the 9-pin DSUB connector is electrically connected to the PLC module.

[0007] The following is a technical solution further defined by the present utility model, wherein the PLC module is electrically connected to the computer via a CAN card.

[0008] The following is a technical solution further defined by the present utility model: the power interface of the 8-channel acquisition module is electrically connected to a 24V power module.

[0009] Compared with the prior art, the utility model has the following technical effects:

[0010] The utility model integrates 8-way thermocouple signal into a plug, connects to an 8-channel acquisition module via a common extension line, connects the output ends of the acquisition module for collecting 8-way thermocouple signals in series, connects the serially connected signals together with other test equipment signals to a PLC module, and finally converts the temperature signal together with other signals into CAN communication and enters a computer data acquisition module to complete the collection of the temperature field data of the heated part.

[0011] By improving the connection relationship between thermocouples, plugs, extension cords, 8-channel acquisition modules and their output series connection, and PLC modules, signal acquisition of multiple temperature test points in the temperature field is completed without extending the compensation cable; the 8 channels on the acquisition module are utilized to the maximum extent; the output ends of multiple acquisition modules are connected in series to avoid multiple acquisition modules being connected to the computer separately and occupying one serial bus interface on the computer, thereby reducing the usage of the computer serial bus interface and the acquisition module CAN card; through the plug, there is no need to rewire when replacing the thermocouple.

[0012] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 It is a connection relationship diagram of specific components of the utility model;

[0015] Figure 2 It is a simplified diagram of the connection relationship of the components of the utility model.

[0016] Figure numerals: 1. Thermocouple; 2. Plug; 3. Extension cord; 4. 8-channel acquisition module; 5. PLC module; 6. CAN card; 7. Computer; 8. Other test equipment; 9. Power module. DETAILED DESCRIPTION

[0017] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation methods of the utility model are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific embodiments disclosed below.

[0018] like Figure 1 and 2 As shown, a portable temperature signal acquisition device for the temperature field of a heated part of a marine engine is provided. The working principle of the device includes:

[0019] First, an extension cable 3 is made using a plug 2 that matches the 8-channel acquisition module 4 .

[0020] Integrate the 8-way thermocouple 1 cable into the female terminal of plug 2.

[0021] One end of the extension line 3 is made into a male terminal of the plug 2, thereby connecting to the female terminal of the plug 2, and the other end is connected to the input end of the 8-channel acquisition module 4.

[0022] If the number of 8-channel acquisition modules 4 is large, a dedicated connecting line can be used to connect the output ends of the 8-channel acquisition modules 4 in series, and the terminal connector of the connecting line in series is connected to the connecting line of the 9-pin DSUB connector with power supply, and the terminal connector of the connecting line is converted into a 9-pin DSUB connector, thereby realizing connection with the PLC module 5.

[0023] Multiple temperature signals of the temperature field and other test equipment 8 signals are converted into CAN communication through the PLC module 5 and enter the computer 7 acquisition module through the CAN card 6.

[0024] The 8-channel acquisition module 4 is powered by a 24V power supply module 9 .

[0025] Finally, the 8-channel acquisition module 4, power module 9, PLC module 5, and thermocouple 1 extension cable are integrated into an electrical box, which enables the acquisition device to be portable and quickly assembled. It can be used in combination with other test equipment 8 or alone.

[0026] It should be noted that, in the above process, the process algorithms and programs involved in the working process between the thermocouple 1, the 8-channel acquisition module 4, the PLC module 5 and the computer 7 are not within the protection scope of the present utility model, and the technical effect of the present utility model is not achieved by a computer program, but by integrating each 8-way thermocouple 1 signal into the plug 2, connecting the 8-channel acquisition module 4 through a common extension line 3, connecting the output ends of the acquisition module that collects the 8-way thermocouple 1 signals in series, and connecting the series-connected signals to the PLC module 5 to achieve the technical effect of the present utility model, that is, by improving the connection relationship between the thermocouple 1, the plug 2, the extension line 3, the 8-channel acquisition module 4 and its output series connection, and the PLC module 5, the signal acquisition of multiple temperature test points in the temperature field is completed without extending the compensation cable; the 8 channels on the acquisition module are utilized to the maximum extent; the output ends of multiple acquisition modules are connected in series to avoid multiple acquisition modules being connected to the computer 7 separately, resulting in occupation of one serial bus interface on the computer 7, that is, reducing the use of the serial bus interface of the computer 7 and the acquisition module CAN card 6; through the plug 2, when the thermocouple 1 is replaced, there is no need to rewire.

[0027] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any technician familiar with the field can make many possible changes and modifications to the technical solution of the utility model by using the above disclosed methods and technical contents without departing from the scope of the technical solution of the utility model, or modify it into an equivalent embodiment of equivalent changes. Therefore, all equivalent changes made according to the shape, structure and principle of the utility model without departing from the content of the technical solution of the utility model should be included in the protection scope of the utility model.

Claims

1. A portable temperature signal acquisition device for the temperature field of a heated part of a marine engine, characterized in that: Includes thermocouple, plug, extension cord, 8-channel acquisition module and PLC module; The cable of the 8-way thermocouple is integrated into the female plug terminal, the female plug terminal is electrically connected to the male plug terminal, the male plug terminal is electrically connected to one end of the extension line, and the other end of the extension line is electrically connected to the input end of an 8-channel acquisition module; The output ends of the multiple 8-channel acquisition modules are connected in series, and the terminal connector of the connecting line output in series is electrically connected to a 9-pin DSUB connector with a power supply, and the 9-pin DSUB connector is electrically connected to the PLC module.

2. A portable temperature signal acquisition device for the temperature field of a heated part of a marine engine as claimed in claim 1, characterized in that: The PLC module is electrically connected to the computer via a CAN card.

3. A portable temperature signal acquisition device for the temperature field of a heated part of a marine engine as claimed in claim 1, characterized in that: The power interface of the 8-channel acquisition module is electrically connected to the 24V power module.

Images