CN220982659U - Thermostat fault testing device - Google Patents
Thermostat fault testing device Download PDFInfo
- Publication number
- CN220982659U CN220982659U CN202322758491.3U CN202322758491U CN220982659U CN 220982659 U CN220982659 U CN 220982659U CN 202322758491 U CN202322758491 U CN 202322758491U CN 220982659 U CN220982659 U CN 220982659U
- Authority
- CN
- China
- Prior art keywords
- water
- thermostat
- flow
- water inlet
- testing device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 43
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 321
- 238000010438 heat treatment Methods 0.000 claims abstract description 47
- 230000001105 regulatory effect Effects 0.000 claims abstract description 22
- 230000001276 controlling effect Effects 0.000 claims abstract description 9
- 238000004891 communication Methods 0.000 claims description 18
- 238000011056 performance test Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 10
- 238000007599 discharging Methods 0.000 description 7
- 238000012423 maintenance Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
Landscapes
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The utility model relates to the technical field of engine thermostats and discloses a thermostat fault testing device which comprises a water flowmeter, a heating unit, a thermostat water temperature sensor, a water pressure sensor, a flow regulating assembly and a control unit, wherein the water flowmeter is arranged at a water outlet of the thermostat. The water temperature sensor of the thermostat is used for detecting the water inlet temperature of the thermostat, the water pressure sensor is used for detecting the water inlet pressure of the thermostat, the flow adjusting component is communicated with the water inlet of the thermostat, the flow adjusting component is used for adjusting the water inlet flow of the thermostat, and the heating unit is used for heating the water inlet of the thermostat. The control unit is used for controlling the flow regulating assembly to regulate the water inflow of the thermostat according to the water inflow pressure of the thermostat, and is also used for controlling the heating unit to heat or stop heating according to the water inflow temperature of the thermostat. The thermostat fault testing device is used for quickly and accurately judging whether the thermostat is normal or not, and improving the reliability of performance tests of the engine.
Description
Technical Field
The utility model relates to the technical field of engine thermostats, in particular to a thermostat fault testing device.
Background
In the process of carrying out an engine bench test and a whole vehicle test, the abnormal water temperature condition is frequently encountered, and whether the engine thermostat is normally opened or closed cannot be accurately judged. The existing thermostat fault judgment is to judge whether the thermostat is in a normal working state by observing whether the thermostat is opened or closed after the thermostat is poured with hot water, and the thermostat can act, so that the thermostat is fault-free, the thermostat does not act, and the surface thermostat is fault-free. However, the failure judgment accuracy of the thermostat is not high, whether the thermostat fails or not cannot be accurately judged, and the maintenance of the failed thermostat cannot be guided, so that the reliability of the performance test of the engine cannot be ensured.
Disclosure of utility model
The utility model provides a thermostat fault testing device which is used for quickly and accurately judging whether a thermostat is normal or not and improving the reliability of performance tests of an engine.
The utility model provides a thermostat fault testing device, which comprises a water flowmeter, a heating unit, a thermostat water temperature sensor, a water pressure sensor, a flow regulating assembly and a control unit, wherein the water flowmeter is connected with the heating unit;
the water flow meter is arranged at the water outlet of the thermostat and is used for detecting the water flow flowing through the thermostat;
the water pressure sensor is used for detecting the water inlet pressure of the thermostat;
the flow regulating assembly is communicated with the water inlet of the thermostat and is used for regulating the water inlet flow of the thermostat;
The heating unit is arranged at the water inlet of the thermostat and is used for heating the water inlet of the thermostat;
The control unit is used for controlling the flow regulating assembly to regulate the water inflow of the thermostat according to the water inflow pressure of the thermostat so as to enable the pressure at the water inlet of the thermostat to be constant, and is also used for controlling the heating unit to heat or stop heating according to the water inflow temperature of the thermostat.
According to the thermostat fault testing device, the water flowmeter, the heating unit, the thermostat water temperature sensor, the water pressure sensor, the flow adjusting component and the control unit are arranged to realize the thermostat test, when the thermostat fault testing device is specifically tested, a set temperature can be preset, when the water inlet temperature of the thermostat is smaller than the set temperature, the control unit controls the heating unit to work so as to enable the water inlet temperature of the thermostat to rise, when the water inlet temperature of the thermostat is larger than the set temperature, the control unit controls the heating unit to stop heating, and cold water can be supplemented to the thermostat so as to enable the water inlet temperature of the thermostat to be consistent with the set temperature. In the process, the water flow of the thermostat at the water inlet temperature is obtained through the water flow meter. Then, different set temperatures are preset, and the process is repeated, so that the water flow of the thermostat at the water inlet temperature of the thermostat at the different set temperatures is obtained through the water flow meter. According to the thermostat fault testing device, the opening degree of the thermostat can be judged by measuring the water flow flowing through the thermostat, the quality of the thermostat is judged according to the water flow through the calibration relation of the water inlet temperature and the water flow, and the thermostat fault testing device provides guidance for maintenance of the faulty thermostat. Through the analysis of the test data, whether the thermostat is normal or not can be rapidly and accurately judged, so that the reliability of the performance test of the engine can be improved, and the test cost is reduced.
In some possible embodiments, the flow regulating assembly comprises a water pump and a control valve comprising a water inlet end and a first water outlet end, the first water outlet end being in communication with the water inlet of the thermostat, the water inlet end being in communication with the water pump.
In some possible embodiments, the water pump further comprises a first water tank, and the water pump is in communication with the first water tank.
In some possible embodiments, the control valve is an electronically controlled three-way proportional valve, the control valve further comprising a second outlet end in communication with the first tank.
In some possible embodiments, the water flow meter is in communication with the first water tank.
In some possible embodiments, a second water tank is further included, the water flow meter being in communication with the second water tank.
In some possible embodiments, the first tank further comprises a water filling port and a water discharging port, which are provided with a first flow valve and a second flow valve, respectively.
In some possible embodiments, a water tank water temperature sensor is provided in the first water tank, the water tank water temperature sensor is used for detecting the water temperature in the first water tank, and the control unit is further used for controlling the opening and closing of the first flow valve and the second flow valve according to the water temperature in the first water tank.
In some possible embodiments, the water pump is a variable frequency water pump.
In some possible embodiments, the heating unit is a heating wire or a heating tube.
Drawings
FIG. 1 is a schematic diagram of a failure testing apparatus for a thermostat according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a thermostat fault testing device according to an embodiment of the present utility model.
In the figure:
1-a water flowmeter; 2-a thermostat water temperature sensor; 3-a water pressure sensor; 4-a heating unit; 5-a control unit; 6-a control valve; 7-a water pump; 8-a water tank water temperature sensor; 9-a water filling port; 10-water outlet; 11-a first water tank; 12-a second water tank; 100-thermostat.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1, the thermostat fault testing device in the embodiment of the present utility model includes a water flow meter 1, a thermostat water temperature sensor 2, a water pressure sensor 3, a heating unit 4, a control unit 5, a flow rate adjusting component (at reference numerals 6 and 7 in fig. 1) and a first water tank 11, wherein the water flow meter 1 is disposed at a water outlet of the thermostat 100 and is in communication with the thermostat 100, and the thermostat water temperature sensor 2, the water pressure sensor 3, the heating unit 4 and the flow rate adjusting component are disposed at a water inlet of the thermostat 100.
Specifically, the water flowmeter 1 is used for detecting water flow flowing through the thermostat 100, the thermostat water temperature sensor 2 is used for detecting water inlet temperature of the thermostat 100, the water pressure sensor 3 is used for detecting water inlet pressure of the thermostat 100, the heating unit 4 is used for heating a water inlet of the thermostat 100, and the flow regulating assembly is used for regulating water inlet flow of the thermostat 100. In addition, the first water tank 11, the flow regulating assembly and the thermostat 100 are sequentially communicated such that water in the first water tank 11 passes through the flow regulating assembly and then enters the thermostat 100.
The control unit 5 is respectively connected with the water flow meter 1, the thermostat water temperature sensor 2, the water pressure sensor 3, the heating unit 4 and the flow regulating component in a signal manner, specifically, the control unit 5 is used for controlling the flow regulating component to regulate the inflow water flow of the thermostat 100 according to the inflow water pressure of the thermostat 100, so that the pressure at the water inlet of the thermostat 100 is constant. And, the control unit 5 is also used for controlling the heating unit 4 to heat or stop heating according to the temperature of the incoming water of the thermostat 100.
In some embodiments, the flow regulating assembly may include a control valve 6 and a water pump 7, the water pump 7 being located between the first water tank 11 and the control valve 6, the control valve 6 including a water inlet end and a first water outlet end, the control valve 6 being in communication with the first water tank 11 through the water inlet end and in communication with the water inlet of the thermostat 100 through the first water outlet end. The water pump 7 can be a variable-frequency water pump, and the opening of the control valve 6 can be adjusted to control the flow rate during testing, so that the water inlet pressure of the thermostat 100 can be adjusted, and the operation is simple and easy.
Further, the control valve 6 may be an electronically controlled three-way proportional valve, in which case the control valve 6 further includes a second water outlet, which may be in communication with the first water tank 11. The control unit 5 can control the opening degrees of the water inlet end, the first water outlet end and the second water outlet end of the control valve 6 respectively, so that the flow rate is regulated accurately.
In addition, the first water tank 11 is provided with a water filling port 9 and a water discharging port 10, an external water source can fill the first water tank 11 through the water filling port 9, and the first water tank 11 can also discharge water through the water discharging port 10. The water filling port 9 and the water discharging port 10 are provided with a first flow valve and a second flow valve, respectively, and the control unit 5 is connected to the first flow valve and the second flow valve by signals to control opening and closing of the first flow valve and the second flow valve, respectively. The second water outlet end of the electric control three-way proportional valve is communicated with the first water tank 11, and when the water inlet pressure of the thermostat 100 is high, the second water outlet end can be opened to discharge a part of water into the first water tank 11. The water flow meter 1 is also in communication with the first water tank 11, thereby recycling the water passing through the thermostat 100.
Further, a water tank water temperature sensor 8 is further provided in the first water tank 11, the water tank water temperature sensor 8 is operable to detect the water temperature in the first water tank 11, and the control unit 5 is further operable to control the opening of the first flow valve and the second flow valve in accordance with the water temperature in the first water tank 11.
In some embodiments, the heating unit 4 may be a heating wire or a heating tube, which may be disposed between the control valve 6 and the thermostat 100, and heat a pipe between the control valve 6 and the thermostat 100, so that the temperature of the intake water of the thermostat 100 increases.
In practical application, the thermostat fault testing device in this embodiment selects a thermostat 100 that works normally without fault, and in combination with fig. 1, first, a set temperature T1 of the water inlet temperature of the thermostat 100 is preset. When the water inlet temperature of the thermostat 100 is less than the set temperature T1, the control unit 5 controls the heating unit 4 to operate so that the water inlet temperature of the thermostat 100 is increased, and when the water inlet temperature of the thermostat 100 is greater than the set temperature T1, the control unit 5 controls the heating unit 4 to stop heating, and simultaneously controls the first flow valve to be opened so as to supplement cold water to the first water tank 11, and simultaneously controls the second flow valve to be opened so as to discharge hot water in the first water tank 11. When the water temperature in the first water tank 11 is lower than the set temperature T1, the control unit 5 controls the first flow valve to close, and water injection into the water tank is stopped. In this process, the water flow meter 1 obtains the water flow L1 of the thermostat 100 at the water inlet temperature of the set temperature T1, and the water flow L1 can be regarded as a standard value of the thermostat 100 at the water inlet temperature of T1.
Then, a set temperature T2 of the water inlet temperature of the thermostat 100 is preset, and the above process is repeated, so that the water flow L2 of the thermostat 100 at the water inlet temperature of the set temperature T2 is obtained through the water flowmeter 1, where the water flow L2 can be regarded as a standard value of the thermostat 100 at the water inlet temperature of T2. Then, the set temperatures T3, T4, T5, etc. of the water inlet temperature of the thermostat 100 are preset, and the above process is repeated, in which the control unit 5 can be used to control the flow regulating assembly to regulate the water inlet pressure at the water inlet of the thermostat 100 to be constant, so as to obtain the standard values L3, L4, L5, etc. of the water flow at different temperatures of the thermostat 100 under the condition of constant water inlet pressure. That is, the thermostat fault testing device in this embodiment performs testing by using the thermostat 100 that normally works to obtain the standard values of water flows at different temperatures when the water inlet pressure of the thermostat 100 is constant in the normal working state, and determines the opening of the thermostat 100 by the water flows flowing through the thermostat 100. Thus, when the temperature is controlled from 20 ℃ to 100 ℃, the change of 0% to 100% of the opening of the thermostat 100 can be judged by the water flow flowing through the thermostat 100, so that the water flow flowing through the thermostat 100 at any control temperature is measured, the linearity of the thermostat 100 can be completely reflected by the water flow, and the state of the thermostat 100 is analyzed in detail.
When judging whether a certain thermostat 100 fails, the thermostat 100 may be preset with a water inlet temperature T1, so that the water inlet pressure of the thermostat 100 is constant, then the water flow meter 1 is used to detect the water flow L 'flowing through the thermostat 100, compare L' with a standard value L1 at the same water inlet pressure and the same water inlet temperature T1, if L '=l1, the thermostat 100 fails, and if L' is not equal to L1, it is indicated that the thermostat 100 fails. In the process of judging whether the thermostat 100 fails, different water inlet temperatures can be preset, the water flow at each water inlet temperature is compared with a standard value, and when one or more data are different from the standard value, the thermostat fails.
It should be appreciated that the testing device in this embodiment can determine the opening degree by measuring the water flow flowing through the thermostat 100, determine the quality of the thermostat 100 according to the water flow through the calibration relationship between the water inlet temperature and the water flow, and provide guidance for the maintenance of the failed thermostat 100. Through analysis of the test data, whether the thermostat 100 is normal or not can be rapidly and accurately judged, so that the reliability of performance tests of the engine can be improved, and the test cost is reduced.
In addition, it should be noted that the water intake pressure of the thermostat 100 remains constant during one test of the same thermostat 100. When the next test is performed or the next thermostat 100 is tested, the water intake pressure of the thermostat 100 may be adjusted according to different test requirements.
Referring to fig. 2, the thermostat fault testing device in the present embodiment includes a water flow meter 1, a thermostat water temperature sensor 2, a water pressure sensor 3, a heating unit 4, a control unit 5, a flow adjusting component, a first water tank 11 and a second water tank 12, wherein the water flow meter 1 is disposed at a water outlet of the thermostat 100 and is communicated with the thermostat 100, and the thermostat water temperature sensor 2, the water pressure sensor 3, the heating unit 4 and the flow adjusting component are disposed at a water inlet of the thermostat 100.
In the testing device of the present embodiment, the water flow meter 1, the thermostat water temperature sensor 2, the water pressure sensor 3, the heating unit 4, the control unit 5 and the flow rate adjusting assembly can refer to the design of fig. 1, and the present embodiment will not be described. The difference from the test device in fig. 1 is that in this embodiment, a first water tank 11 and a second water tank 12 are provided independently of each other, the first water tank 11 being in communication with the water pump 7 and the second water outlet end of the control valve 6, the second water tank 12 being in communication with the water flow meter 1 for separate use in recovering water flowing through the thermostat 100.
The first water tank 11 is provided with a water filling port 9 and a water discharging port 10, the water filling port 9 and the water discharging port 10 are respectively provided with a first flow valve and a second flow valve, and the control unit 5 is respectively connected with the first flow valve and the second flow valve through signals so as to control the opening and closing of the first flow valve and the second flow valve to realize water filling and water discharging. The first water tank 11 is further provided with a water tank water temperature sensor 8, which water tank water temperature sensor 8 is operable to detect the water temperature in the first water tank 11, and the control unit 5 is further operable to control the opening of the first flow valve and the second flow valve in accordance with the water tank in the first water tank 11.
In practical application, referring to fig. 2, the testing device of the present embodiment first presets a set temperature T1 of the water inlet temperature of the thermostat 100. When the water inlet temperature of the thermostat 100 is less than the set temperature T1, the control unit 5 controls the heating unit 4 to operate so that the water inlet temperature of the thermostat 100 is increased, and when the water inlet temperature of the thermostat 100 is greater than the set temperature T1, the control unit 5 controls the heating unit 4 to stop heating and simultaneously controls the first flow valve to be opened so as to supplement cold water to the first water tank 11. When the water temperature in the first water tank 11 is lower than the set temperature T1, the control unit 5 controls the first flow valve to close, and water injection into the water tank is stopped. In this process, the water flow meter 1 obtains the water flow L1 of the thermostat 100 at the water inlet temperature of the set temperature T1, and the water flow L1 can be regarded as a standard value of the thermostat 100 at the water inlet temperature of T1.
Then, a set temperature T2 of the water inlet temperature of the thermostat 100 is preset, and the above process is repeated, so that the water flow L2 of the thermostat 100 at the water inlet temperature of the set temperature T2 is obtained through the water flowmeter 1, where the water flow L2 can be regarded as a standard value of the thermostat 100 at the water inlet temperature of T2. Then, the set temperatures T3, T4, T5, etc. of the water inlet temperature of the thermostat 100 are preset, and the above process is repeated, in which the control unit 5 can be used to control the flow regulating assembly to regulate the water inlet pressure at the water inlet of the thermostat 100 to be constant, so as to obtain the standard values L3, L4, L5, etc. of the water flow at different temperatures of the thermostat 100 under the condition of constant water inlet pressure. Thus, when the temperature is controlled from 20 ℃ to 100 ℃, the change of 0% to 100% of the opening of the thermostat 100 can be judged by the water flow flowing through the thermostat 100, so that the water flow flowing through the thermostat 100 at any control temperature is measured, the linearity of the thermostat 100 can be completely reflected by the water flow, and the state of the thermostat 100 is analyzed in detail.
It will be apparent to those skilled in the art that various modifications and variations can be made to the embodiments of the present utility model without departing from the spirit and scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (10)
1. The thermostat fault testing device is characterized by comprising a water flowmeter (1), a heating unit (4), a thermostat water temperature sensor (2), a water pressure sensor (3), a flow regulating assembly and a control unit (5);
The water flow meter (1) is arranged at the water outlet of the thermostat (100) and is used for detecting the water flow flowing through the thermostat (100);
The water pressure sensor (3) is used for detecting the water inlet pressure of the thermostat (100);
The flow regulating assembly is communicated with the water inlet of the thermostat (100) and is used for regulating the water inlet flow of the thermostat (100);
The heating unit (4) is arranged at the water inlet of the thermostat (100), and the heating unit (4) is used for heating the water inlet of the thermostat (100);
The control unit (5) is used for controlling the flow regulating assembly to regulate the inflow flow of the thermostat (100) according to the inflow pressure of the thermostat (100) so as to enable the pressure at the water inlet of the thermostat (100) to be constant, and the control unit (5) is also used for controlling the heating unit (4) to heat or stop heating according to the inflow temperature of the thermostat (100).
2. Thermostat fault testing device according to claim 1, characterized in that the flow regulating assembly comprises a water pump (7) and a control valve (6), the control valve (6) comprising a water inlet end and a first water outlet end, the first water outlet end being in communication with the water inlet of the thermostat (100), the water inlet end being in communication with the water pump (7).
3. Thermostat fault testing device according to claim 2, characterized in that it further comprises a first water tank (11), the water pump (7) being in communication with the first water tank (11).
4. A thermostat fault testing device according to claim 3, characterized in that the control valve (6) is an electrically controlled three-way proportional valve, the control valve (6) further comprising a second water outlet end, which communicates with the first water tank (11).
5. A thermostat fault testing device according to claim 3, characterized in that the water flow meter (1) is in communication with the first water tank (11).
6. A thermostat fault testing device according to claim 3, further comprising a second water tank (12), the water flow meter (1) being in communication with the second water tank (12).
7. A thermostat fault testing device according to claim 3, characterized in that the first water tank (11) further comprises a water filling port (9) and a water discharge port (10), the water filling port (9) and the water discharge port (10) being provided with a first flow valve and a second flow valve, respectively.
8. Thermostat fault testing device according to claim 7, characterized in that a tank water temperature sensor (8) is arranged in the first tank (11), the tank water temperature sensor (8) being arranged to detect the water temperature in the first tank (11), the control unit (5) being further arranged to control the opening and closing of the first flow valve and the second flow valve in dependence of the water temperature in the first tank (11).
9. Thermostat fault testing device according to claim 2, characterized in that the water pump (7) is a variable frequency water pump.
10. Thermostat fault testing device according to claim 1, characterized in that the heating unit (4) is a heating wire or a heating tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322758491.3U CN220982659U (en) | 2023-10-13 | 2023-10-13 | Thermostat fault testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322758491.3U CN220982659U (en) | 2023-10-13 | 2023-10-13 | Thermostat fault testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220982659U true CN220982659U (en) | 2024-05-17 |
Family
ID=91059358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322758491.3U Active CN220982659U (en) | 2023-10-13 | 2023-10-13 | Thermostat fault testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220982659U (en) |
-
2023
- 2023-10-13 CN CN202322758491.3U patent/CN220982659U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111024327B (en) | Device and method for air leakage self-checking and air leakage detection of object to be detected | |
| CN106872155A (en) | A kind of performance of exhaust valve test system and method for testing | |
| CN200986521Y (en) | SF6 gas density relay check meter | |
| CN104481971A (en) | Torque-type hydraulic pump and hydraulic motor power recovery test platform | |
| CN106153161B (en) | Instrument detection device | |
| CN105547670B (en) | A kind of balanced valve incoming test device | |
| CN108072100A (en) | Floor heating pipeline leak detecting device and detection method | |
| CN105758599A (en) | Automatic leakage detecting device of water heater or wall-hung stove and operating method thereof | |
| CN220982659U (en) | Thermostat fault testing device | |
| CN209372401U (en) | Safety valve relieving characteristics test macro | |
| CN109029943B (en) | Two-loop check valve test device | |
| CN103837215B (en) | Commutation valve type p.V.T.t method gas flow meter | |
| CN209673198U (en) | A kind of online method of standard table flowmeter calibrating installation | |
| CN110411676B (en) | Valve leakage detection device | |
| CN102305676A (en) | Automatic calibrating apparatus on flow of heat energy meter | |
| CN113720424B (en) | Series-parallel coupling type multi-station water meter calibrating device and method | |
| CN212296825U (en) | Water pump test bed capable of testing pressure value adjustment | |
| CN209910953U (en) | Water heater check valve performance detection device | |
| CN204882050U (en) | Valve capability test system is mediated to fuel filter pressure | |
| CN210601070U (en) | Command performance test platform | |
| CN104990646A (en) | Heat energy meter pressure loss measurement device | |
| CN105043600A (en) | Intelligent large caliber calorimeter detection device and method | |
| CN111811798A (en) | Waterway detection system and waterway detection method | |
| CN205981396U (en) | Instrument detector | |
| CN204855044U (en) | Measuring device is decreased to heat energy gauge pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |