CN110763721B - Intelligent rock-soil thermophysical property testing system - Google Patents
Intelligent rock-soil thermophysical property testing system Download PDFInfo
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- CN110763721B CN110763721B CN201911059218.3A CN201911059218A CN110763721B CN 110763721 B CN110763721 B CN 110763721B CN 201911059218 A CN201911059218 A CN 201911059218A CN 110763721 B CN110763721 B CN 110763721B
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Abstract
The invention relates to an intelligent rock-soil thermophysical property testing system, which comprises a cloud server, a remote terminal and a rock-soil thermophysical property tester, wherein the rock-soil thermophysical property tester collects, stores and feeds back the water supply temperature of an embedded pipe, the water return temperature of the embedded pipe, the circulating flow and the heating power to the cloud server according to the instruction of a field tester or the remote terminal, a user can calculate the thermophysical property parameters of a rock-soil body according to the testing data, the remote terminal can request the testing data from the cloud server and graphically display the testing data, the remote terminal can manage the information of the testing items, the user can conveniently record the testing information or search and compare the results of different testing items, the rock-soil thermophysical property tester can realize all functions of the remote terminal according to the testing data, and the rock-soil thermophysical property tester can monitor whether abnormity occurs in the testing process to judge whether to send a warning or close equipment, so as to prevent dangerous situations such as fire.
Description
Technical Field
The invention relates to the technical field of ground source heat pumps, in particular to an intelligent rock-soil thermophysical property testing system.
Background
At present, development and application of renewable energy resources are concerned, and the ground source heat pump technology is widely applied due to the advantages of energy conservation, high efficiency and the like. In the design of a ground source heat pump system, the thermal physical property parameter of a rock-soil body is one of important design parameters, and before the design of the buried pipe ground source heat pump system, the rock-soil body in an engineering field area is firstly subjected to the test of the thermal physical property of the rock-soil body. However, the existing geotechnical thermophysical property tester has a poor man-machine interaction effect due to low intelligent degree, so how to realize an intelligent geotechnical thermophysical property testing system is a technical problem to be solved urgently in the industry.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides an intelligent rock-soil thermophysical property testing system.
The invention discloses an intelligent rock-soil thermophysical property testing system, which adopts the technical scheme as follows:
the system comprises a cloud server, a remote terminal and a rock-soil thermophysical property tester;
the rock-soil thermophysical property tester is used for collecting, storing and feeding back the water supply temperature of the buried pipe, the water return temperature of the buried pipe, the circulating flow and the heating power to the cloud server according to instructions of field testers or the remote terminal;
the rock-soil thermophysical property tester is also used for monitoring whether abnormity occurs in the test process to judge whether to send out a reminding alarm or close the equipment;
the cloud server is used for receiving and storing the buried pipe water supply temperature, the buried pipe water return temperature, the circulation flow and the heating power, and the remote terminal requests the buried pipe water supply temperature, the buried pipe water return temperature, the circulation flow and the heating power from the cloud server and displays the buried pipe water supply temperature, the buried pipe water return temperature, the circulation flow and the heating power in a graphical mode;
the remote terminal is also used for managing the test item information.
The intelligent rock-soil thermophysical property testing system has the following beneficial effects:
the rock-soil thermophysical property tester collects and stores the water supply temperature of the buried pipe, the return water temperature of the buried pipe, the circulating flow and the heating power according to the instruction of the remote terminal and feeds the collected and stored water supply temperature, the return water temperature of the buried pipe, the circulating flow and the heating power back to the cloud server, a user can calculate the rock-soil thermophysical property parameters according to the test data in the cloud server, the remote terminal can request the test data from the cloud server and graphically display the test data, in addition, the remote terminal can manage the test item information, on one hand, the user can conveniently record the test information, on the other hand, the user can conveniently search, compare and analyze the results of different test items, and the rock-soil thermophysical property tester can also monitor whether the abnormal condition occurs in the test process to judge whether to send a warning alarm or close equipment, timely remind the user of dealing with the emergent condition in the experimental process so as to prevent the occurrence of some dangerous situations such as fire hazard, the damage probability is reduced, and therefore the intelligent rock-soil thermophysical property testing system is realized.
On the basis of the scheme, the intelligent rock-soil thermophysical property testing system can be further improved as follows.
Further, the rock-soil thermophysical property tester comprises an industrial tablet personal computer, an equipment internal circulation pipeline, an electric heating water tank, a main control module, a temperature sensor and an alarm module;
the remote terminal comprises a Web end and an APP end;
the device internal circulation pipeline is divided into an underground side water supply pipe and an underground side water return pipe which are respectively communicated with the electric heating water tank, and the underground side water supply pipe and the underground side water return pipe are respectively provided with the temperature sensor;
the main control module is used for controlling the temperature sensor to respectively acquire the buried pipe water supply temperature of the buried side water supply pipe and the buried pipe water return temperature of the buried side water return pipe according to instructions of the industrial tablet computer, the Web end or the APP end, store the acquired buried pipe water supply temperature and the buried pipe water return temperature in the buried side water supply pipe, and feed the stored buried pipe water supply temperature and the buried pipe water return temperature back to the cloud server;
the alarm module is used for monitoring whether the test data acquired by the main control module is abnormal to judge whether to send out the reminding alarm or close the equipment.
The beneficial effect of adopting the further scheme is that: the main control module of the rock-soil thermophysical property tester controls the temperature sensors to respectively collect the buried water supply temperature of the buried side water supply pipe and the buried water return temperature of the buried side water return pipe according to instructions of an industrial tablet computer, a Web end or an APP end, and feeds back the temperature to the cloud server after storing the temperature to the industrial tablet computer so as to reduce the risk of test data loss. And the rock-soil thermophysical property tester monitors whether the test data acquired by the main control module is abnormal through the alarm module to judge whether to send out a reminding alarm or close the equipment.
Further, the geotechnical thermophysical property tester also comprises a circulating water pump and a power supply module, wherein the circulating water pump is arranged on the internal circulation pipeline of the equipment, under the control of the main control module, the power supply module supplies power to the electric heating water tank in a PWM mode through an MOS (metal oxide semiconductor) tube and controls the electric heating water tank to start and stop, and the power supply module controls the starting and the stopping of the circulating water pump through a relay.
The beneficial effect of adopting the further scheme is that: on one hand, under the control of the main control module, the power supply module realizes the slow start or slow stop of the electric heating water tank in a PWM mode through the MOS tube, so that the safety of the electric heating water tank is enhanced; on the other hand, the power supply module controls the starting and stopping of the circulating water pump through the relay, namely, the relay is used as a 'automatic switch' for controlling the large-current operation by using the small current, so that the starting and stopping of the circulating water pump are controlled.
Further, the heating power of the electric heating water tank is obtained by utilizing a voltage sensor and a current sensor, the main control module is used for comparing the preset heating power of the electric heating water tank with the heating power to obtain power deviation, and if the power deviation exceeds the range of the preset power deviation, the power supply module automatically adjusts the actual heating power to the range of the preset power deviation in a PWM mode.
The beneficial effect of adopting the further scheme is that: the heating power of the electric heating water tank is obtained by utilizing the voltage sensor and the current sensor, the power deviation is obtained after the main control module compares the preset heating power and the heating power of the electric heating water tank, if the power deviation exceeds the range of the preset power deviation, the power supply module automatically adjusts the heating power to the range of the preset power deviation in a PWM mode, and therefore automatic correction of the heating power is achieved, and the test result is more accurate.
Furthermore, the main control module, the power supply module and the alarm module are integrated on a single chip microcomputer.
The beneficial effect of adopting the further scheme is that: the master control module, the power supply module and the alarm module are integrated on the same single chip microcomputer, so that the integration level is further improved.
Further, the main control module is also used for monitoring the circulation flow of a circulation pipeline in the equipment and the actual temperature of the single chip microcomputer, the alarm module is used for comparing whether the circulation flow exceeds a preset flow or not, the alarm module is also used for comparing whether the actual temperature of the single chip microcomputer exceeds a preset temperature or not, judging whether the circulation water pump and the electric heating water tank are closed or not according to the comparison result, and judging whether the reminding alarm is given or not; the circulating flow is displayed on a touch display screen of the industrial tablet computer; the industrial tablet computer is further used for managing the test item information.
The beneficial effect of adopting the further scheme is that: the circulation flow can show on the touch-control display screen of industry panel computer, be convenient for the user observes, and industry panel computer also can be used for managing test item information, further be convenient for the user to take notes test information and be convenient for the user to seek the result of different test items, compare and the analysis, furthermore, bury the actual flow of side delivery pipe and bury the side return pipe with burying by the ground that main control module gathered when alarm module listened, or when the actual temperature of singlechip takes place unusually, automatic shutdown circulating water pump and electrical heating water tank and automatic alarm warning of sending out, guarantee that ground thermophysical properties tester is not damaged.
The rock-soil thermal physical property tester further comprises an outer box body and an inner box body, wherein the inner box body is arranged in the outer box body, a first box door is arranged on one side wall of the inner box body, the inner box body divides the inner space of the outer box body into a detection cavity and a control cavity, and the control cavity is positioned in the inner box body; two opposite side walls of the outer box body are respectively provided with a second box door for opening the detection cavity and exposing the inner box body, and the industrial tablet personal computer and the single chip microcomputer are arranged in the control cavity; the buried side water supply pipe, the buried side water return pipe and the electric heating water tank are respectively arranged in the detection cavity.
The beneficial effect of adopting the above further scheme is: the rock-soil thermophysical property tester comprises two cavities, a detection system and a control system of the thermophysical property tester can be integrated in one box, the degree of integration is high, the internal structure is compact, the equipment volume is small, the carrying is convenient, and the disassembly and the installation of the tester are also convenient.
Further, the buried side water supply pipe and the buried side water return pipe are respectively horizontally arranged and penetrate through the side wall of the outer box body, and the buried side water return pipe is located above the buried side water supply pipe.
The beneficial effect of adopting the further scheme is that: the buried side water supply pipe and the buried side water return pipe are respectively horizontally arranged, and the buried side water return pipe is arranged above the buried side water supply pipe, so that the mounting space in the vertical direction can be effectively utilized, and the water flow conveying is facilitated.
Drawings
FIG. 1 is a schematic diagram I of an internal structure of a rock-soil thermal physical property tester of an intelligent rock-soil thermal physical property testing system;
fig. 2 is a schematic diagram of an internal structure of a rock-soil thermophysical property tester of the intelligent rock-soil thermophysical property testing system of the invention;
fig. 3 is a schematic diagram of an internal structure of an electric heating water tank of a rock-soil thermal physical property tester of the intelligent rock-soil thermal physical property testing system.
In the drawings, the components represented by the respective reference numerals are listed below:
1. an outer case; 11. a pipe clamp; 12. an inner box body; 21. a buried side water supply pipe; 22. a buried side water return pipe; 3. an electrically heated water tank; 31. heating a tube; 32. heating the main drum; 33. a water inlet interface; 34. a water outlet interface; 35. an expansion interface; 36. a housing; 4. a water circulating pump; 5. a temperature sensor; 6. an expansion tank; 61. a diffused silicon pressure sensor; 62. a flow sensor; 63. connecting a pipeline; 7. an industrial tablet computer; 8. and (4) a bracket.
Detailed Description
The intelligent rock-soil thermophysical property testing system comprises a cloud server, a remote terminal and a rock-soil thermophysical property tester;
the rock-soil thermophysical property tester is used for collecting, storing and feeding back the water supply temperature of the buried pipe, the water return temperature of the buried pipe, the circulating flow and the heating power to the cloud server according to instructions of field testers or remote terminals;
the rock-soil thermophysical property tester is also used for monitoring whether abnormity occurs in the test process to judge whether to send out a reminding alarm or close the equipment;
the remote terminal requests the cloud server for the buried pipe water supply temperature, the buried pipe backwater temperature, the circulation flow and the heating power and displays the buried pipe water supply temperature, the buried pipe backwater temperature, the circulation flow and the heating power in a graphical mode;
the remote terminal is also used for managing the test item information.
The rock-soil thermophysical property tester collects and stores the water supply temperature of the buried pipe, the return water temperature of the buried pipe, the circulation flow and the heating power according to the instruction of a field tester or a remote terminal, and feeds the collected and stored data back to the cloud server, a user can calculate the rock-soil thermophysical property parameters according to the test data in the cloud server, the remote terminal can request the test data from the cloud server and graphically display the test data, in addition, the remote terminal can manage the test item information, on one hand, the user can conveniently record the test information, on the other hand, the user can conveniently search, compare and analyze the results of different test items, and the rock-soil thermophysical property tester can also monitor whether the abnormal condition occurs in the test process to judge whether to send a reminding alarm or close equipment, timely remind the user of dealing with the emergent condition in the test process, so as to prevent the occurrence of some dangerous situations such as fire disasters, the damage probability is reduced, and therefore the intelligent rock-soil thermophysical property testing system is realized.
The field tester can input instructions on the remote terminal and then send the instructions to the rock-soil thermophysical property tester through the remote terminal.
A user can establish a mathematical model according to test data such as the buried pipe water supply temperature, the buried pipe water return temperature, the circulating flow and the like to solve thermal physical parameters such as the thermal conductivity coefficient, the thermal diffusivity, the initial earth temperature and the like of the rock-soil body.
The instructions of the remote terminal can be transmitted to the rock-soil thermophysical property tester through a wireless network, the buried pipe water supply temperature, the buried pipe water return temperature, the circulation flow and the heating power are transmitted to the cloud server through the wireless network for transmission, and the remote terminal also requests the cloud server through the wireless network for transmission of the data.
Preferably, as shown in fig. 1 and 2, in the above technical solution, the rock-soil thermophysical property tester includes an industrial tablet computer 7, an equipment internal circulation pipeline, an electric heating water tank 3, a main control module, a temperature sensor 5 and an alarm module;
the remote terminal comprises a Web end and an APP end;
the internal circulation pipeline of the equipment is divided into a buried side water supply pipe 21 and a buried side water return pipe 22 which are respectively communicated with the electric heating water tank 3, and the buried side water supply pipe 21 and the buried side water return pipe 22 are respectively provided with a temperature sensor 5;
the main control module is used for controlling the temperature sensor 5 to respectively acquire the buried pipe water supply temperature of the buried side water supply pipe 21 and the buried pipe water return temperature of the buried side water return pipe 22 according to instructions of the industrial tablet computer 7 and the Web end or APP end, storing the temperatures into the industrial tablet computer 7 and feeding the temperatures back to the cloud server;
the alarm module is used for monitoring whether the test data acquired by the main control module is abnormal to judge whether to send out a reminding alarm or close the equipment.
The main control module of the rock-soil thermophysical property tester controls the temperature sensor 5 to respectively acquire the buried pipe water supply temperature of the buried side water supply pipe 21 and the buried pipe water return temperature of the buried side water return pipe 22 according to the instruction of the industrial tablet computer 7, the Web end or the APP end, stores the temperature values in the industrial tablet computer 7 and then feeds back the temperature values to the cloud server, so that the risk of test data loss is reduced. And the rock-soil thermophysical property tester monitors whether the test data acquired by the main control module is abnormal through the alarm module to judge whether to send out a reminding alarm or close the equipment.
The temperature sensor 5 can be calibrated, the measurement error is calculated, and the water supply temperature and the water return temperature of the buried pipe are corrected on the industrial tablet computer 7, the Web end or the APP end according to the measurement error, so that the test result is more accurate. The remote terminal can be a computer, and at this time, the corresponding terminal is a Web terminal, or the remote terminal can be a mobile phone, and at this time, the corresponding terminal is an APP terminal.
The buried side water supply pipe 21 and the buried side water return pipe 22 are respectively formed by connecting a plurality of pipelines, and the pipelines are respectively arranged on the bracket 8 through pipe clamps 11. The underground side water supply pipe 21 and the underground side water return pipe 22 are conveniently detached and installed. In addition, other auxiliary components, such as a pressure gauge, a valve, a filter valve, etc., may be installed on the underground water supply pipe 21 and the underground water return pipe 22 through quick release flanges, and in order to reduce the size of the apparatus, the auxiliary components may be installed and used on site through quick release components.
Preferably, in the above technical scheme, the rock-soil thermal property tester further comprises a circulating water pump 4 and a power supply module, the circulating water pump 4 is arranged on the circulating pipeline in the equipment, the power supply module supplies power to the electric heating water tank 3 in a PWM manner through a MOS tube and controls the start and stop of the electric heating water tank under the control of the main control module, and the power supply module controls the start and stop of the circulating water pump 4 through a relay.
On one hand, under the control of the main control module, the power supply module realizes the slow start or slow stop of the electric heating water tank 3 in a PWM mode through an MOS tube; on the other hand, the power supply module controls the starting and stopping of the circulating water pump 4 through a relay, namely, the relay is used as a small current to control an automatic switch operated by a large current, so that the starting and stopping of the circulating water pump 4 are controlled.
Wherein, power module has realized through the MOS pipe that the process that electrical heating water tank 3 slowly started or slowly stopped with the PWM mode specifically does:
1) when the electric heating water tank 3 is started, the main control module controls the duty ratio of the MOS tube to rise slowly, so that the heating power of the electric heating water tank 33 rises slowly, and slow start is realized;
2) after the electric heating water tank 3 is closed, the main control module controls the duty ratio of the MOS tube to slowly decrease, so that the heating power of the electric heating water tank 3 is slowly reduced, and slow stop is realized;
preferably, in the above technical solution, the voltage sensor and the current sensor are used to obtain the heating power of the electric heating water tank 3, the main control module is used to compare the preset heating power and the heating power of the electric heating water tank 3 to obtain a power deviation, and if the power deviation exceeds the range of the preset power deviation, the power supply module automatically adjusts the actual heating power to the range of the preset power deviation in a PWM manner.
Utilize voltage sensor and current sensor to obtain the heating power of electrical heating water tank 3, obtain the power deviation behind the preset heating power of main control module comparison electrical heating water tank 3 and the heating power, if the power deviation surpasss the scope of presetting the power deviation, then power module with PWM mode automatically regulated heating power to the within range of presetting the power deviation, realized heating power's automatic correction promptly, make the test result more accurate, its concrete process is:
firstly, a voltage sensor and a current sensor are utilized to obtain the heating power of the electric heating water tank 3;
secondly, the main control module is used for comparing the preset heating power and the heating power of the electric heating water tank 3, when the heating power is smaller than the preset heating power, the duty ratio of the MOS tube is increased, otherwise, the duty ratio of the MOS tube is decreased, and the automatic correction of the heating power of the electric heating water tank 3 is realized;
wherein, the related calculation formula is:
P＝U ON *I are all made of Formula four
Wherein P represents heating power; t represents a unit period; u represents a voltage value collected by a voltage sensor; i represents the current value acquired by the current sensor; t is t on Representing the effective opening time of the MOS tube; u shape on Representing the time voltage value of the MOS tube opening; i is Are all made of Represents the average value of the AD conversion current; the first formula is an integral expression of the heating power of the electric heating water tank 3, and the second formula, the third formula and the fourth formula are states of the MOS tube deduced according to the heating power.
In the adjusting process, a preset power deviation threshold value is set on the industrial tablet computer 7, the Web end or the APP end, and when the power deviation between the preset heating power and the heating power exceeds the range of the preset deviation threshold value, coarse adjustment is carried out, namely the duty ratio of the MOS tube is quickly adjusted; and when the power deviation between the heating power and the heating power is lower than a preset power deviation threshold value, fine adjustment is carried out, namely the duty ratio of the MOS tube is adjusted slowly. Meanwhile, the acquisition frequency of the voltage sensor and the current sensor and the adjustment frequency of the duty ratio of the MOS tube can be set. And finally, automatically adjusting the power deviation between the preset heating power and the heating power to be within the range of the preset power deviation threshold value.
For example: the collection frequency of the preset voltage sensor and the collection frequency of the current sensor are collected once every 100ms, the adjustment frequency of the duty ratio of the MOS tube is adjusted once every 3s, the deviation of the preset power is 10W, the threshold value of the deviation of the preset power is 150W, when the deviation of the power between the heating power and the preset heating power exceeds 150W, coarse adjustment is carried out, when the deviation of the power between the heating power and the preset heating power is lower than 150W, fine adjustment is carried out, when the heating power is close to the preset heating power, the adjustment amplitude of the MOS tube can be gradually reduced until the MOS tube is stabilized within the deviation of the preset power, namely fluctuation within 10W, namely the power deviation is automatically adjusted to the range of the deviation of the preset power, so that the time consumption for adjusting the heating power is short, and the efficiency is high.
Wherein, if directly use the commercial power to the power supply of electrical heating water tank 3, can have voltage fluctuation because of the commercial power receives the influence of electric wire netting load, can lead to the heating power of electrical heating water tank 3 can change along with voltage fluctuation, in order to guarantee the stability of the heating power of electrical heating water tank 33, power module adopts the alternating current to change into the direct current and supplies power:
firstly, the commercial power is rectified through a rectifier bridge, after the commercial power with the voltage effective value of 220V is rectified through the rectifier bridge, the output voltage is the voltage effective value of the commercial power
And (4) doubling. The direct current under the condition is unstable, the waveform curve of the direct current continuously changes from zero to the maximum value along with the time, and the direct addition of the direct current to the electric heating water tank 33 still causes the instability of the heating power;
secondly, through increasing the stable direct current power supply of electric capacity maintenance, parallel connection electric capacity can also filter the clutter when can storing the voltage of constantly changing effectively behind the rectifier bridge, and electric capacity can output steady voltage.
For example: if the rated heating power of the electric heating water tank 3 is 9KW, firstly, a rectifier bridge is selected: the current of the circuit is 30A by an electric power formula, so a rectifier bridge with a larger specification, such as a rectifier bridge with a specification of 190A/1600V, is selected; and secondly, selecting a capacitor: the dc voltage 300V and the corresponding current 30A on the capacitor after the capacitor filtering can obtain a load resistance 300/30 ═ 10 Ω, and the filter capacitor should filter the ac ripple component, so its capacitive reactance should be much smaller than the load resistance, generally at least 10 times, therefore, for the commercial power with 50Hz frequency, its capacitive reactance Xc ═ 1/2 π fC should be smaller than 10 Ω, and C should be larger than 3184 μ F. Therefore, the parallel connection of 4 capacitors of 1000 muF/450V can meet the design requirement.
Preferably, in the above technical solution, the main control module, the power supply module and the alarm module are integrated on one single chip. The master control module, the power supply module and the alarm module are integrated on the same single chip microcomputer, so that the integration level is further improved.
Preferably, in the above technical solution, the main control module is further configured to monitor a circulation flow rate of a circulation pipeline in the device and an actual temperature of the single chip microcomputer, the alarm module is configured to compare whether the circulation flow rate exceeds a preset flow rate, the alarm module is further configured to compare whether the actual temperature of the single chip microcomputer exceeds a preset temperature, and determine whether to turn off the circulation water pump 4 and the electric heating water tank 3 according to a comparison result thereof, and determine whether to issue a warning alarm; the circulating flow is displayed on a touch display screen of the industrial tablet computer 7; the industrial tablet computer 7 is also used for managing test item information.
The buried side water return pipe 22 is bent downward, then horizontally bent and penetrates out of the side wall of the outer box 1, and a section of horizontally bent pipe below the buried side water return pipe 22 is connected with a flow sensor 62. The main control module monitors the circulation flow of the internal circulation pipeline of the equipment through the flow sensor 62, the length of the upstream pipeline of the flow sensor 62 is 5 pipe diameters, and the length of the downstream pipeline is 2 pipe diameters. And a temperature sensor with the model number of DS18B20 can be arranged on the singlechip, and the main control module monitors the actual temperature of the singlechip through the temperature sensor with the model number of DS18B20 arranged on the singlechip.
The circulation flow can show on the touch-control display screen of industry panel computer 7, the user of being convenient for observes, and industry panel computer 7 also can be used for managing test item information, further be convenient for the user to take notes test information and be convenient for the user to seek the result of different test items, compare and the analysis, moreover, bury the actual flow that side delivery pipe 21 and bury side wet return 22 with burying by what host system gathered when alarm module listened, or when the actual temperature of singlechip takes place unusually, automatic shutdown circulating water pump 4 and electric heating water tank 3 and automatic alarm warning of sending out, guarantee that the hot rerum natura tester of ground is not damaged.
The electric heating water tank 3 comprises a heating pipe 31 and a heating main cylinder 32, the heating pipe 31 is embedded in the heating main cylinder 32, one end of the heating main cylinder 32 is provided with a threaded joint connected with the heating pipe 31, the side wall of the heating main cylinder 32 is provided with a water inlet port 33 and a water outlet port 34, the buried side water supply pipe 21 is connected and communicated with the water inlet port 33, and the buried side water return pipe 22 is connected and communicated with the water outlet port 34. The rock-soil thermophysical property tester also comprises an expansion water tank 6, the other end of the heating main cylinder 32 is provided with an expansion interface 35 communicated with the inside of the heating main cylinder, and the expansion water tank 6 penetrates into the outer box body 1 through a connecting pipeline 63 and is communicated with the expansion interface 35 of the electric heating water tank 3; the top of the heating main cylinder 32 is connected with a connecting pipeline 63 and a diffused silicon pressure sensor 61 through a tee joint respectively. The main control module monitors the actual water level of the expansion water tank 6 through the diffused silicon pressure sensor 61, and the alarm module is used for comparing whether the actual water level exceeds the preset water level so as to determine whether to send out alarm reminding, specifically:
1) the alarm module judges whether the actual temperature of the singlechip is lower than the preset temperature, if the actual temperature of the singlechip is lower than or equal to the preset temperature, the circulating water pump 4 and the electric heating water tank 3 are automatically closed, and an alarm prompt is sent;
2) the alarm module judges whether the actual flow is lower than the preset flow, and if the actual flow is lower than the preset flow, the circulating water pump 4 and the electric heating water tank 3 are automatically closed, and an alarm prompt is sent;
3) the alarm module judges whether the actual water level exceeds a preset water level, if the actual water level does not exceed the preset water level, the circulating water pump 4 and the electric heating water tank 3 are automatically closed, and an alarm prompt is sent out;
and above-mentioned three kinds of modes can use alone also can combine the use, also can sort according to actual conditions, when the actual temperature that satisfies the singlechip simultaneously is no longer than preset temperature, actual flow is greater than preset flow, when actual water level is greater than preset water level, can not self-closing circulating water pump 4 and electric heating water tank 3, also can not send out the alarm and remind.
Wherein, the alarm is reminded including sound is reminded and light is reminded, specifically: an acoustic alarm is arranged in the rock-soil thermophysical property tester, and when the alarm module detects abnormality, the main control module controls the acoustic alarm to make sound to prompt the occurrence of the abnormality; install the alarm lamp in the hot rerum natura tester of ground, when alarm module detected unusual, master control module control alarm lamp lighted, and the suggestion produces unusually, simultaneously, also can pop out the alarm at industry panel computer 7's touch-control display screen, remote terminal's Web end or APP end and remind the window to the suggestion unusual reason.
As shown in fig. 1 to 3, the heating main cylinder 32 is vertically arranged, the threaded joint is located at the bottom of the heating main cylinder 32, the expansion joint 35 is located at the top of the heating main cylinder 32, the expansion water tank 6 is located at one side of the top of the outer box 1, and the bottom of the expansion water tank 6 penetrates through the side wall of the outer box 1 through a connecting pipe 63 and is communicated with the expansion joint 35. The outer side wall of the heating main cylinder 32 is coated with a layer of outer shell 36, an annular gap is formed between the outer shell 36 and the heating main cylinder 32, and the gap is filled with heat insulation materials.
Preferably, in the above technical solution, the rock-soil thermal property tester further comprises an outer box 1 and an inner box 12, wherein the inner box 12 is arranged in the outer box 1, a first box door is arranged on a side wall of the inner box 12, the inner box 12 divides the inner space of the outer box 1 into a detection cavity and a control cavity, and the control cavity is located in the inner box 12; two opposite side walls of the outer box body 1 are respectively provided with a second box door for opening the detection cavity and exposing the inner box body 12, and the industrial tablet personal computer 7 and the single chip microcomputer are arranged in the control cavity; the buried side water supply pipe 21, the buried side water return pipe 22, and the electric heating water tank 3 are installed in the detection chamber, respectively. The rock soil thermophysical property tester has the advantages of high integration degree, compact internal structure, small equipment volume, convenient carrying and convenient disassembly and assembly of the instrument.
Preferably, in the above-described embodiment, the buried water supply pipe 21 and the buried water return pipe 22 are horizontally disposed and extend through the side wall of the outer case 1, and the buried water return pipe 22 is located above the buried water supply pipe 21. The buried side water supply pipe 21 and the buried side water return pipe 22 are horizontally disposed, and the buried side water return pipe 22 is disposed above the buried side water supply pipe 21, so that the installation space in the vertical direction can be effectively utilized, and the water flow can be conveniently conveyed.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood according to specific situations by those of ordinary skill in the art.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (7)
1. An intelligent rock-soil thermophysical property test system is characterized by comprising a cloud server, a remote terminal and a rock-soil thermophysical property tester;
the rock-soil thermophysical property tester is used for collecting, storing and feeding back the water supply temperature of the buried pipe, the water return temperature of the buried pipe, the circulating flow and the heating power to the cloud server according to instructions of field testers or the remote terminal;
the rock-soil thermophysical property tester is also used for monitoring whether abnormity occurs in the test process to judge whether to send out a reminding alarm or close the equipment;
the cloud server is used for receiving and storing the buried pipe water supply temperature, the buried pipe water return temperature, the circulation flow and the heating power, and the remote terminal requests the buried pipe water supply temperature, the buried pipe water return temperature, the circulation flow and the heating power from the cloud server and displays the buried pipe water supply temperature, the buried pipe water return temperature, the circulation flow and the heating power in a graphical mode;
the remote terminal is also used for managing the test item information;
the rock-soil thermophysical property tester comprises an industrial tablet personal computer, an equipment internal circulation pipeline, an electric heating water tank, a main control module, a temperature sensor and an alarm module;
the remote terminal comprises a Web end and an APP end;
the device internal circulation pipeline is divided into an underground side water supply pipe and an underground side water return pipe which are respectively communicated with the electric heating water tank, and the temperature sensors are respectively arranged on the underground side water supply pipe and the underground side water return pipe;
the main control module is used for controlling the temperature sensor to respectively acquire the buried pipe water supply temperature of the buried side water supply pipe and the buried pipe water return temperature of the buried side water return pipe according to the instructions of the industrial tablet computer, the Web end or the APP end, storing the acquired temperature values in the industrial tablet computer and feeding the stored temperature values back to the cloud server;
the alarm module is used for monitoring whether the test data acquired by the main control module is abnormal to judge whether to send out the reminding alarm or close the equipment.
2. The intelligent geotechnical thermal property test system according to claim 1, wherein the geotechnical thermal property tester further comprises a circulating water pump and a power supply module, the circulating water pump is arranged on the circulating pipeline in the equipment, under the control of the main control module, the power supply module supplies power to the electric heating water tank in a PWM mode through an MOS (metal oxide semiconductor) tube and controls the electric heating water tank to start and stop, and the power supply module controls the electric heating water tank to start and stop through a relay.
3. The intelligent geotechnical thermophysical property testing system according to claim 2, wherein the heating power of the electric heating water tank is obtained by using a voltage sensor and a current sensor, the main control module is used for comparing preset heating power of the electric heating water tank with the heating power to obtain power deviation, and if the power deviation exceeds the range of the preset power deviation, the power supply module automatically adjusts actual heating power to be within the range of the preset power deviation in a PWM (pulse width modulation) mode.
4. The intelligent geotechnical thermophysical property testing system according to claim 3, wherein the main control module, the power supply module and the alarm module are integrated on a single chip microcomputer.
5. The intelligent geotechnical thermophysical property testing system according to claim 4, wherein the main control module is further used for monitoring the circulation flow of a circulation pipeline in the equipment and the actual temperature of the single chip microcomputer, the alarm module is used for comparing whether the circulation flow exceeds a preset flow, the alarm module is further used for comparing whether the actual temperature of the single chip microcomputer exceeds a preset temperature, judging whether the circulation water pump and the electric heating water tank are closed according to the comparison result, and judging whether the reminding alarm is given; the circulating flow is displayed on a touch display screen of the industrial tablet computer; the industrial tablet computer is further used for managing the test item information.
6. The intelligent geotechnical thermophysical property test system according to claim 5, wherein the geotechnical thermophysical property tester further comprises an outer box body and an inner box body, the inner box body is arranged in the outer box body, a first box door is arranged on one side wall of the inner box body, the inner box body divides the inner space of the outer box body into a detection cavity and a control cavity, and the control cavity is positioned in the inner box body; two opposite side walls of the outer box body are respectively provided with a second box door for opening the detection cavity and exposing the inner box body, and the industrial tablet personal computer and the single chip microcomputer are arranged in the control cavity; the buried side water supply pipe, the buried side water return pipe and the electric heating water tank are respectively arranged in the detection cavity.
7. The intelligent geotechnical thermal property testing system according to claim 6, wherein the buried side water supply pipe and the buried side water return pipe are horizontally arranged and penetrate through the side wall of the outer box respectively, and the buried side water return pipe is located above the buried side water supply pipe.
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| CN110763721A (en) | 2020-02-07 |
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