CN214408556U

CN214408556U - Penetration tester

Info

Publication number: CN214408556U
Application number: CN202120233430.3U
Authority: CN
Inventors: 白志辉; 金伟勇; 徐�明; 唐艳华
Original assignee: Shanghai Huipu Engineering Inspection Co ltd
Current assignee: Shanghai Huipu Engineering Inspection Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-10-15
Anticipated expiration: 2031-01-27

Abstract

The application relates to a penetration tester, which comprises a testing platform, a lifting device arranged on the testing platform, and a testing device arranged on the lifting device, wherein a sample cup is arranged on the testing platform, a temperature adjusting component for heating a sample is arranged on the sample cup, the temperature adjusting component comprises a heat conducting cylinder sleeved on the sample cup, a heating element is arranged on the heat conducting cylinder, the penetration tester also comprises a temperature detection module for monitoring the temperature of the sample in the sample cup, and a control module electrically connected with the temperature detection module; the temperature detection module is preset with a temperature threshold, if the temperature detection module monitors that the temperature of the sample is lower than the temperature threshold, the control circuit controls the heating element to work, and if the temperature sensing module monitors that the temperature of the sample is higher than the temperature threshold, the control circuit controls the heating element to stop. The method and the device have the effect of improving the accuracy of the test result of the sample.

Description

Penetration tester

Technical Field

The application relates to the technical field of penetration testing equipment, in particular to a penetration tester.

Background

The penetration tester is an instrument for testing the penetration of materials such as petroleum asphalt, lubricating grease, petroleum grease, paraffin and the like, can test solid fine particles, powder and colloid, and is widely applied to food industry, road traffic and other industrial industries. The penetration tester mainly comprises a test board, a lifting frame, a standard needle and a sample vessel or a sample cup, and the influence of the temperature of the sample on the test result is large during testing.

In order to solve the technical problems, the Chinese patent with the publication number of CN205786193U discloses an asphalt penetrometer, which comprises a working platform, a leveling screw, a bubble device, a constant-temperature water bath vessel, an upright post, a linear motor, a slide block, a displacement sensor, a needle connecting rod, a weight, a standard needle and a controller; the upper surface of the working platform is provided with a constant-temperature water bath vessel, the constant-temperature water bath vessel is provided with a temperature sensor, and the temperature of a sample to be detected is adjusted through the constant-temperature water bath vessel.

In view of the above-mentioned related technologies, the inventors believe that the temperature adjustment performance of the asphalt penetrometer is poor, and the test result is prone to be inaccurate.

SUMMERY OF THE UTILITY MODEL

In order to reduce the influence of the temperature fluctuation of a sample on a test result and improve the accuracy of the test result, the application provides a penetration tester.

The application provides a penetration tester adopts following technical scheme:

a penetration tester comprises a testing platform, a lifting device arranged on the testing platform, and a testing device arranged on the lifting device, wherein a sample cup is arranged on the testing platform, a temperature adjusting component for heating a sample is arranged on the sample cup, the temperature adjusting component comprises a heat conducting cylinder sleeved on the sample cup, a heating element is arranged on the heat conducting cylinder, the penetration tester also comprises a temperature detection module for monitoring the temperature of the sample in the sample cup, and a control module electrically connected with the temperature detection module; the temperature detection module is preset with a temperature threshold, if the temperature detection module monitors that the temperature of the sample is lower than the temperature threshold, the control circuit controls the heating element to work, and if the temperature sensing module monitors that the temperature of the sample is higher than the temperature threshold, the control circuit controls the heating element to stop.

By adopting the technical scheme, when the temperature detection device is used, the temperature threshold value of the temperature detection module is adjusted according to the difference of the types and physical properties of samples and the requirement of parameters required by testing, then the samples are added into the sample cup, the heat conduction cylinder uniformly conducts the heat generated by the heating element to the sample cup under the heating action of the heating element, and then the samples are uniformly heated; then, under the synergistic action of the temperature detection module and the control module, the temperature of the sample in the sample cup is monitored and adjusted in real time, so that the temperature fluctuation of the sample is in a lower range, and then the position of the testing device is adjusted through the lifting device and measured, so that the accuracy of a sample testing result is improved.

Optionally, a plurality of heat-conducting plates are fixedly arranged on the heat-conducting cylinder, the moving direction of each heat-conducting plate is parallel to the axial direction of the heat-conducting cylinder, and the heat-conducting plates are distributed at intervals on the outer side wall of the heat-conducting cylinder.

Through adopting above-mentioned technical scheme, the heat-conducting plate can increase the thermal convection between heat-conducting section of thick bamboo and the sample cup to heat radiation to the heating member production carries out the equilibrium, improves the homogeneity of being heated of sample cup.

Optionally, the heat-conducting plate sets up to the arc, the heat-conducting plate orientation deviates from the direction extension setting of sample cup.

By adopting the technical scheme, the arc-shaped heat conduction plate plays roles of guiding and converging the heat radiation of the heating element, so that each position of the sample cup is uniformly heated, and the homogeneity of the temperature of the sample in the sample cup is improved.

Optionally, the heating member is arranged as an electric heating wire, and the heating member is spirally arranged on the heat conducting cylinder.

Through adopting above-mentioned technical scheme, the heating member that the spiral set up can heat the sample cup in all directions and position, further improves the homogeneity and the stability of being heated of sample cup.

Optionally, a vacuum tube is arranged outside the heat conduction tube, the vacuum tube and the heat conduction tube are arranged in a sealed manner, a cavity is arranged between the vacuum tube and the heat conduction tube, and the cavity is in a vacuum state.

By adopting the technical scheme, the heat conductivity coefficient of the cavity between the vacuum cylinder and the heat-conducting cylinder is greatly reduced after the vacuum cylinder is vacuumized, the heat exchange between the sample cup and the outside can be reduced, and the fluctuation range of the sample temperature is reduced.

Optionally, a protective cylinder is arranged outside the vacuum cylinder, a heat insulation cavity is arranged between the protective cylinder and the heat conduction cylinder, and heat insulation materials are filled in the heat insulation cavity.

Through adopting above-mentioned technical scheme, thermal insulation material has lower coefficient of heat conductivity equally, can further reduce sample cup and external heat exchange, and the protection section of thick bamboo can protect sample cup in addition, reduces the influence of external to sample cup.

Optionally, the control module includes controller, drive circuit, relay and power supply unit, the controller both ends respectively with drive circuit with the temperature detection module electricity is connected, the relay with the heating member electricity is connected, the power supply unit with the heating member electricity is connected.

Through adopting above-mentioned technical scheme, when using, temperature detection module will detect signal transmission and give the controller, and the controller carries out analysis processes to the signal, then gives drive circuit and control opening and shutting of relay with signal transmission, and then controls the work and the shutdown of heating member, and degree of automation is high, has improved the control degree to sample temperature in the sample cup.

Optionally, the temperature detection module includes a detection probe, the detection probe is disposed on the inner sidewall of the sample cup, and an output end of the detection probe is electrically connected to an input end of the controller.

By adopting the technical scheme, the temperature of the sample in the sample cup is monitored by the detection probe in real time, so that the condition that the temperature of the sample fluctuates too much to cause the reduction of the test accuracy is reduced.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the heating element generates heat, the sample cup is uniformly heated under the heat conduction action of the heat conduction cylinder, and the control module and the temperature detection module monitor and control the temperature of the sample in the sample cup in real time, so that the fluctuation of the temperature of the sample is reduced, and the accuracy of a sample test result is improved;

2. the heat exchange between the sample cup and the outside is reduced through the vacuum cavity between the vacuum cylinder and the heat-conducting cylinder, and the temperature stability of the sample is further improved;

3. the heat exchange between the sample cup and the outside is further reduced through the protective cylinder, the sample cup is protected, and the testing efficiency and the testing accuracy are improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a partially enlarged schematic view of a portion a in fig. 1.

FIG. 3 is a block diagram of the module connections of the control module and the temperature sensing module of the present application.

Description of reference numerals: 1. a test platform; 2. a lifting device; 3. a testing device; 4. A sample cup; 5. a temperature regulating component; 51. a heat conducting tube; 52. a heating member; 53. a heat conducting plate; 54. a vacuum cylinder; 55. a cavity; 56. a protective cylinder; 57. a protective cover; 6. a temperature detection module; 61. detecting a probe; 62. a switch; 7. a control module; 71. a controller; 72. a drive circuit; 73. a relay; 74. a power supply unit.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a penetration tester. Referring to fig. 1, the penetration tester comprises a testing platform 1, a lifting device 2 and a testing device 3 installed on the lifting device 2, wherein a standard needle used for measuring a sample is installed on the testing device 3, the lifting device 2 can adjust the height and the position of the standard needle to meet testing parameters, and the testing device 3 tests the sample. Test platform 1 is rectangle box column structure, and test platform 1 is placed on desktop or other planes, and welded fastening has the sample cup 4 that is used for holding the sample on test platform 1, and sample cup 4 is the cylindric cup of one end open-ended, and sample cup 4 is made by corrosion-resistant alloy material in this embodiment. The sample cup 4 is also provided with a temperature adjusting component 5, when in use, a sample to be tested is placed in the sample cup 4, the sample is adjusted to a proper temperature through the temperature adjusting component 5, the temperature fluctuation of the sample is reduced, and the accuracy of a test result is improved.

In order to improve the temperature control of the sample cup 4, referring to fig. 1 and 2, the temperature adjustment assembly 5 includes a heat conduction cylinder 51 and a heating element 52, the heat conduction cylinder 51 is a cylindrical cup body, the heat conduction cylinder 51 is sleeved on the sample cup 4, the axes of the heat conduction cylinder 51 and the sample cup 4 are overlapped, and the opening of the heat conduction cylinder 51 is sealed and fixed with the outer side wall of the sample cup 4. Heating member 52 is fixed on the urceolus wall of a heat-conducting tube 51, heating member 52 is electric heating wire in this embodiment, in order to improve the heating homogeneity of heating member 52, electric heating wire is spiral coil and fixes on a heat-conducting tube 51 lateral wall, can make the heat of heating member 52 distribute evenly from this, make a heat-conducting tube 51 be heated evenly, and then make being heated of sample cup 4 and sample comparatively even, improve the isotropy of sample temperature, improve test data's accuracy.

With continued reference to fig. 1 and 2, in order to further improve the heating uniformity of the sample, a heat conducting plate 53 is integrally fixed on the outer cylindrical wall of the heat conducting cylinder 51, the heat conducting plate 53 is a long plate-shaped structure, and the direction of the heat conducting plate 53 is parallel to the axis of the heat conducting cylinder 51. The section of the heat conducting plate 53 along the direction of the heat conducting plate is arc-shaped, and the center of the arc-shaped circle is arranged at one side of the heat conducting cylinder 51 in the sample cup 4. In this embodiment, the heat conducting plates 53 are provided in plural numbers, and the plural heat conducting plates 53 are uniformly distributed along the outer cylindrical wall of the heat conducting cylinder 51 at intervals in the circumference. When the sample cup is used, the heat conduction plate 53 can enable the heat radiation generated by the heating element 52 to generate convection and convergence, so that the heating degree of each position of the sample cup 4 is consistent, and the temperature uniformity of the sample is further improved.

In order to reduce the fluctuation range of the sample temperature, referring to fig. 2, a vacuum cylinder 54 is sleeved outside the heat-conducting cylinder 51, the vacuum cylinder 54 is also provided with a cylindrical cup-shaped structure, and the opening of the vacuum cylinder 54 is hermetically arranged with the outer cylinder wall of the heat-conducting cylinder 51. A cavity 55 is formed between the inner side wall of the vacuum cylinder 54 and the outer cylinder wall of the heat-conducting cylinder 51, and the cavity 55 is evacuated. The vacuum cavity 55 between the vacuum cylinder 54 and the heat conduction cylinder 51 can greatly reduce the heat exchange between the sample cup 4 and the outside, and improve the stability of the sample temperature.

Referring to fig. 2, a protective cylinder 56 is further sleeved outside the vacuum cylinder 54, the protective cylinder 56 is cylindrical, the protective cylinder 56 is made of a light heat-insulating material, a heat-insulating cavity is formed between the inner side wall of the protective cylinder 56 and the outer cylinder wall of the vacuum cylinder 54, heat-insulating materials are filled in the heat-insulating cavity, and the heat-insulating materials in this embodiment are polystyrene foam particles. The heat exchange of the sample cup 4 with the outside is further reduced by the protective sleeve 56 and the heat insulating material.

Referring to fig. 1, in order to further reduce the influence of external environment to the sample test, the last bonding of testing platform 1 is fixed with protection casing 57, and protection casing 57 is made for transparent organic glass material, and protection casing 57 is the square structure, and protection casing 57 covers and establishes outside sample cup 4, keeps apart the sample with the external world, improves the accuracy of test result. The center of the top of the protective cover 57 is provided with a test hole for the standard needle to pass through, so that the protective cover 57 can protect the sample without influencing the test process, and the test is convenient and fast.

In order to monitor and control the temperature of the sample in the sample cup 4, referring to fig. 3, the penetration tester is further provided with a control module 7 for controlling the operation of the heating element 52, and the control module 7 is electrically connected with a temperature detection module 6 for monitoring the temperature of the sample in the sample cup 4. The temperature detection module 6 includes a detection probe 61 and a switch 62. The control module 7 includes a controller 71, a drive circuit 72, a relay 73, and a power supply unit 74. The input end of the controller 71 is electrically connected with the output end of the detection probe 61, the switch 62 is connected between the controller 71 and the detection probe 61 in series, and the switch 62 is used for controlling the connection or disconnection between the detection probe 61 and the control module 7. Two ends of the driving circuit 72 are respectively electrically connected with the output end of the controller 71 and the controlled end of the relay 73, the control end of the relay 73 is connected in series with the power supply circuit of the heating element 52, and the relay 73 is in a normally open state. The detection probe 61 is a temperature sensor, and the temperature sensor is arranged on the inner side wall in the sample cup 4. The temperature sensor is preset with a temperature threshold, the temperature threshold is set in an adaptive mode according to the type of a sample, when the temperature sensor monitors that the temperature in the sample cup 4 is smaller than or equal to the temperature threshold, the temperature sensor sends a starting instruction to the control circuit, the control circuit controls the heating element 52 to be powered on, the heating element 52 heats the sample in the sample cup 4, when the temperature sensor monitors that the temperature of the sample in the cold sample cup 4 is larger than the temperature threshold, the temperature sensor sends a stopping instruction to the control circuit, and the control circuit controls the heating element 52 to be stopped. When in use, the temperature of the sample in the sample cup 4 can be adjusted in time, and the accuracy of the test result is high.

With continued reference to fig. 3, the power supply unit 74 includes VCC1 and VCC2, VCC1 supplies the controller 71, and VCC1 is set at 1.5-5V. VCC2 powers heating element 52, and VCC2 is set at 220V or 380V. The controller 71 is a single chip microcomputer or a PLC, and the type of the driving circuit 72 is ULN 2003.

The implementation principle of the penetration tester in the embodiment of the application is as follows: when the device is used, the position of a standard needle for testing is well adjusted through the lifting device 2, then a sample is placed into the sample cup 4, the heating element 52 heats the sample and controls the temperature of the sample until the temperature required by testing is reached, the temperature detection module 6 monitors the temperature of the sample in real time, the fluctuation degree of the temperature of the sample is smaller under the control of the control module 7, and the accuracy of a sample testing result is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a penetration tester, includes test platform (1), sets up elevating gear (2) on test platform (1) and installs testing arrangement (3) on elevating gear (2), its characterized in that: the testing platform (1) is provided with a sample cup (4), the sample cup (4) is provided with a temperature adjusting component (5) for heating a sample, the temperature adjusting component (5) comprises a heat conducting cylinder (51) sleeved on the sample cup (4), a heating element (52) is arranged on the heat conducting cylinder (51), the testing platform also comprises a temperature detection module (6) for monitoring the temperature of the sample in the sample cup (4), and a control module (7) electrically connected with the temperature detection module (6); the temperature detection module (6) is preset with a temperature threshold, if the temperature detection module (6) monitors that the temperature of the sample is lower than the temperature threshold, the control circuit controls the heating element (52) to work, and if the temperature sensing module monitors that the temperature of the sample is higher than the temperature threshold, the control circuit controls the heating element (52) to stop.

2. A penetration tester as defined in claim 1, wherein: the heat conduction cylinder (51) is fixedly provided with a plurality of heat conduction plates (53), the moving direction of the heat conduction plates (53) is parallel to the axial direction of the heat conduction cylinder (51), and the heat conduction plates (53) are distributed on the outer side wall of the heat conduction cylinder (51) at intervals.

3. A penetration tester as claimed in claim 2, wherein: the heat-conducting plate (53) is arranged to be an arc-shaped plate, and the heat-conducting plate (53) extends towards the direction deviating from the sample cup (4).

4. A penetration tester as defined in claim 1, wherein: the heating element (52) is arranged as an electric heating wire, and the heating element (52) is spirally arranged on the heat-conducting cylinder (51).

5. A penetration tester as defined in claim 1, wherein: a vacuum cylinder (54) is arranged outside the heat-conducting cylinder (51), the vacuum cylinder (54) and the heat-conducting cylinder (51) are arranged in a sealing mode, a cavity (55) is arranged between the vacuum cylinder (54) and the heat-conducting cylinder (51), and the cavity (55) is in a vacuum state.

6. A penetration tester as claimed in claim 5, wherein: a protective cylinder (56) is arranged outside the vacuum cylinder (54), a heat insulation cavity is arranged between the protective cylinder (56) and the heat conducting cylinder (51), and heat insulation materials are filled in the heat insulation cavity.

7. A penetration tester as defined in claim 1, wherein: the control module (7) comprises a controller (71), a driving circuit (72), a relay (73) and a power supply unit (74), two ends of the controller (71) are respectively connected with the driving circuit (72) and the temperature detection module (6) electrically, the relay (73) is electrically connected with the heating element (52), and the power supply unit (74) is electrically connected with the heating element (52).

8. A penetration tester as defined in claim 7, wherein: the temperature detection module (6) comprises a detection probe (61), the detection probe (61) is arranged on the inner side wall of the sample cup (4), and the output end of the detection probe (61) is electrically connected with the input end of the controller (71).