CN217766180U

CN217766180U - Freezing point detector

Info

Publication number: CN217766180U
Application number: CN202221624727.3U
Authority: CN
Inventors: 王强; 陈钢
Original assignee: Keling Electromechanical Technology Shanghai Co ltd
Current assignee: Keling Electromechanical Technology Shanghai Co ltd
Priority date: 2022-06-27
Filing date: 2022-06-27
Publication date: 2022-11-08
Anticipated expiration: 2032-06-27

Abstract

The utility model belongs to the technical field of the detector technique and specifically relates to a freezing point detector is related to, including the differential pressure sensor who is used for placing the collecting vessel of the antifreeze that awaits measuring and measures the antifreeze hydraulic pressure difference, be provided with the bracing piece in the collecting vessel, be provided with the slider on the bracing piece, be provided with on the bracing piece and drive the slider lift and remove in the adjustment mechanism of bracing piece, differential pressure sensor includes first test head and the second test head of test hydraulic pressure and calculates the treater of pressure differential between first test head and the second test head, first test head and second test head are fixed in the not co-altitude position of slider. The freezing point efficiency of the test antifreeze solution is improved.

Description

Freezing point detector

Technical Field

The application relates to the technical field of detectors, in particular to an ice point detector.

Background

The glycol is the main component of the antifreeze, which accounts for about 45 percent of the antifreeze stock solution, and the antifreeze stock solution can be mixed with water according to a certain proportion according to the temperature of each place, so as to control the freezing point within a proper range.

The freezing point of the antifreeze is related to the density of the glycol solution, so that when the freezing point of the antifreeze is tested, only the density of the antifreeze needs to be tested, the obtained density is converted into a corresponding volume fraction, and the freezing point value of the antifreeze can be obtained by comparing the volume fraction of the glycol solution with a comparison table of the glycol solution. In the related art, when the density of the antifreeze is tested, a measuring cylinder and a balance are usually required for testing the mass and the volume of the antifreeze, and in order to ensure the accuracy of data, the average value of volume fractions is obtained through multiple measurements, so that the ice point value of the antifreeze is obtained by comparing a reference table.

In the related art, the applicant thinks that the volume and the mass of the antifreeze solution need to be measured for many times during measurement in the related art, and the test efficiency is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the efficiency of test antifreeze freezing point, this application provides an freezing point detector.

The application provides a freezing point detector adopts following technical scheme:

the utility model provides a freezing point detector, is including the differential pressure sensor who is used for placing the collecting vessel of the antifreeze that awaits measuring and measures the frostproofing hydraulic pressure difference, be provided with the bracing piece in the collecting vessel, be provided with the slider on the bracing piece, be provided with the drive on the bracing piece the slider lift move in the adjustment mechanism of bracing piece, differential pressure sensor includes test hydraulic first test head and second test head and calculates first test head with the treater of pressure differential between the second test head, first test head with the second test head is fixed in the not co-altitude position of slider.

By adopting the technical scheme, when the antifreeze is measured, the antifreeze is placed into the collecting barrel, so that the liquid level of the antifreeze is higher than that of the first testing head and that of the second testing head, and the liquid level heights of the first testing head and that of the second testing head are different, so that the first testing head and the second testing head generate pressure difference, the pressure difference is calculated by the processor, the height of the sliding block is adjusted by the adjusting mechanism, so that the pressure difference can be measured for many times.

Preferably, the adjusting mechanism comprises a fixed block and an adjusting rod, the fixed block is fixed on the supporting rod, the adjusting rod is rotatably connected to the fixed block, the axis of the adjusting rod is parallel to the supporting rod, and the adjusting rod is in threaded connection with the sliding block.

By adopting the technical scheme, during testing, the adjusting rod is rotated, the adjusting rod and the sliding block are connected through threads to realize relative sliding, and the sliding of the sliding block on the supporting rod is realized, so that the measurement work of the differential pressure sensor among different liquid levels of the anti-freezing solution is realized, and the operation is simple.

Preferably, a plurality of guide posts parallel to each other are fixed on the fixing block, the axes of the guide posts are parallel to the support rod, and the guide posts penetrate through the sliding block.

Through adopting above-mentioned technical scheme, the guide post has the direction effect to sliding of slider, reduces the slider and takes place the possibility of skew at the in-process that slides, guarantees that the difference in height of first test head and second test head keeps unchangeable, improves the stability of test result.

Preferably, the adjusting rod is provided with a positioning block, and the positioning block is abutted against the top of the fixing block.

By adopting the technical scheme, the positioning block is convenient for determining the mounting position of the adjusting rod on the fixing block, and meanwhile, the possibility that the adjusting rod moves downwards in the testing process can be reduced, so that the testing stability is improved.

Preferably, the fixed block is provided with an installation groove, a rotating bearing is fixed in the installation groove, and the adjusting rod is coaxially fixed on an inner ring of the rotating bearing.

Through adopting above-mentioned technical scheme, rolling bearing has improved the rotation smoothness degree of adjusting the pole.

Preferably, the top end of the adjusting rod is provided with a rotating hand wheel.

Through adopting above-mentioned technical scheme, rotate the hand wheel and be convenient for the staff to rotate the regulating lever.

Preferably, the slider is provided with at least three adjusting holes, the adjusting holes are uniformly distributed in the vertical direction, and the first testing head and the second testing head are respectively fixed in the adjusting holes with different heights.

Through adopting above-mentioned technical scheme, the relative difference in height of first test head and second test head is convenient for adjust to the regulation hole, has improved the variety of test, and the interval in adjustment hole is the same simultaneously, is convenient for confirm the difference in height of first test head and second test head after the installation.

Preferably, the support rod is provided with a limiting block, and the limiting block is located below the sliding block.

Through adopting above-mentioned technical scheme, stopper slider has spacing effect to the slider for confirm the extreme low position department that the slider was located.

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

1. the pressure difference of the antifreeze to be measured between the first test head and the second test head can be determined through the pressure difference sensor, and the height of the sliding block can be controlled by a worker through rotating the adjusting rod, so that the position of the pressure difference sensor can be adjusted, the pressure difference of the antifreeze can be conveniently measured for multiple times, the density of the antifreeze is converted through calculation and converted into the volume fraction of glycol, the freezing point value of the antifreeze is obtained by referring to a comparison table, the pressure difference of the antifreeze can be rapidly measured for multiple times, and the freezing point test efficiency of the antifreeze is improved;

2. the relative difference in height of first test head and second test head is convenient for adjust to the regulation hole, has improved the variety of test, and the interval in adjustment hole is the same simultaneously, is convenient for confirm the difference in height of first test head and second test head after the installation.

Drawings

FIG. 1 is a schematic view of the present embodiment for showing the overall appearance;

FIG. 2 is a sectional view showing the integral mounting structure of the present embodiment;

fig. 3 is a partial exploded view of a connection structure for a fixing block and an adjusting rod according to the present embodiment.

Reference numerals: 1. a collection barrel; 2. a differential pressure sensor; 21. a first test head; 22. a second test head; 23. a processor; 3. a support bar; 4. a slider; 5. an adjustment mechanism; 51. a fixed block; 52. adjusting a rod; 6. an adjustment hole; 7. a signal line; 8. positioning blocks; 9. mounting grooves; 10. a rotating bearing; 11. a guide post; 12. rotating a hand wheel; 13. and a limiting block.

Detailed Description

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

The embodiment of the application discloses a freezing point detector.

Referring to fig. 1 and 2, the freezing point detector is used for placing a collecting barrel 1 for an antifreeze solution to be detected and a differential pressure sensor 2 for measuring an antifreeze hydraulic pressure difference, the bottom of the collecting barrel 1 is bolted and connected with a support rod 3, and the axis of the support rod 3 is in the vertical direction. The support rod 3 is connected with a sliding block 4 in a sliding manner, and the support rod 3 is fixed with an adjusting mechanism 5 which drives the sliding block 4 to ascend and descend on the support rod 3. At least three adjusting holes 6 are formed in the sliding block 4, and the adjusting holes 6 are uniformly distributed in the vertical direction.

Referring to fig. 2, the differential pressure sensor 2 includes a first test head 21 and a second test head 22 capable of testing hydraulic pressure and a processor 23 for calculating a pressure difference between the second test head 22 and the first test head 21, signal lines 7 are respectively connected between the first test head 21 and the second test head 22 and the processor 23, the pressure of the antifreeze solution measured by the first test head 21 and the second test head 22 is transmitted to the processor 23 through the signal lines 7, and the processor 23 is fixed on the outer side wall of the collection barrel 1 through bolts. First test head 21 and second test head 22 are bolted connection in the different regulation hole 6 on slider 4 respectively, because the interval of adjacent regulation hole 6 is the same, need not to measure just can obtain the difference in height of first test head 21 and second test head 22, and the difference in height of first test head 21 and second test head 22 is convenient for adjust to a plurality of regulation holes 6, is convenient for improve the variety of test.

Referring to fig. 2 and 3, the adjusting mechanism 5 includes a fixing block 51 and an adjusting rod 52, the fixing block 51 is fixed to the supporting rod 3 by bolts, and the height of the fixing block 51 is higher than the top surface of the collecting barrel 1, so as to ensure that the fixing block 51 does not contact with the antifreeze solution during testing; the adjusting rod 52 penetrates through the fixing block 51 along the vertical direction, and the adjusting rod 52 is in threaded connection with the sliding block 4. The adjusting rod 52 is integrally connected with a positioning block 8, and the positioning block 8 is abutted against the top of the fixing block 51, so that the installation position of the adjusting rod 52 on the fixing block 51 can be conveniently determined. One side of the fixed block 51 close to the positioning block 8 is provided with a mounting groove 9, the mounting groove 9 is connected with a rotating bearing 10 in a clamping manner, and the adjusting rod 52 is coaxially fixed on an inner ring of the rotating bearing 10, so that the adjusting rod 52 can conveniently rotate on the fixed block 51.

Referring to fig. 2, two guide posts 11 coaxial with an adjusting rod 52 are welded on a fixing block 51 along the vertical direction, a circular hole with the same outer diameter as the guide posts 11 is formed in the corresponding sliding block 4, the guide posts 11 penetrate through the sliding block 4, and a guide effect is provided for sliding of the sliding block 4 in the vertical direction, so that the possibility of deviation of the sliding block 4 in the sliding process is reduced, the height difference of the first testing head 21 and the second testing head 22 is kept unchanged, and the measurement accuracy of the differential pressure sensor 2 is ensured.

The top end of the adjusting rod 52 is fixedly provided with a rotating hand wheel 12 through threaded connection, so that the adjusting rod 52 can be rotated by a worker conveniently. When measurement is carried out, the antifreeze to be tested is placed in the collecting barrel 1, and the liquid level of the added antifreeze is higher than that of the first testing head 21 and the second testing head 22. The first testing head 21 and the second testing head 22 respectively measure the pressure intensity of different liquid levels, the pressure difference value between the first testing head 21 and the second testing head 22 is obtained after the pressure intensity is processed by the processor 23, a worker rotates the rotating hand wheel 12 to slide the sliding block 4, and the pressure difference value between different liquid levels is obtained through the first testing head 21 and the second testing head 22. Multiple measurements can be obtained through multiple operations.

The scheme mainly includes that according to a formula delta P = rho g delta h, the pressure difference measured by a pressure difference sensor 2 is converted into the density rho of the anti-freezing solution; in the formula, g is a known value, Δ h is the height difference between the first test head 21 and the second test head 22, and the value of Δ h can be determined without measurement by adjusting the distance between the holes 6; in addition, in the sliding process of the slider 4, the value Δ h is also kept unchanged, Δ P is the pressure difference between the first test head 21 and the second test head 22, and is obtained through calculation by the processor 23, so that only the density ρ of the antifreeze solution in the formula is an unknown number and can be obtained through calculation. The accuracy of the test data can be ensured through multiple measurements.

When the first test head 21 and the second test head 22 are located at the middle height of the anti-freezing solution, the measured data are accurate, therefore, the support rod 3 is located below and is in threaded connection with the limiting block 13, the limiting block 13 is located below the slider 4 and is used for determining the lowest position where the slider 4 can slide on the support rod 3, the first test head 21 and the second test head 22 are not located at the position where the anti-freezing solution is too low, and the accuracy of the test data is ensured.

The implementation principle of this application embodiment freezing point detector does: the antifreeze is placed in the collecting barrel 1, so that the liquid level of the antifreeze is higher than that of the first testing head 21 and that of the second testing head 22, the first testing head 21 and the second testing head 22 generate pressure difference due to different liquid level heights, the processor 23 calculates the pressure difference value, the worker rotates the rotating hand wheel 12 to slide the sliding block 4, so that the pressure difference value between the first testing head 21 and the second testing head 22 can be measured for multiple times, the average value of the pressure difference is obtained after the multiple measurements, the density of the antifreeze is obtained through calculation and is converted into the volume fraction of ethylene glycol, the freezing point value of the antifreeze is obtained by referring to the comparison table, and the testing efficiency is high.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, 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. An ice point detector, its characterized in that: including collecting vessel (1) that is used for placing the antifreeze that awaits measuring and differential pressure sensor (2) of measuring the antifreeze hydraulic pressure difference, be provided with bracing piece (3) in collecting vessel (1), be provided with slider (4) on bracing piece (3), be provided with the drive on bracing piece (3) slider (4) lift move in adjustment mechanism (5) of bracing piece (3), differential pressure sensor (2) are including first test head (21) and the second test head (22) of test hydraulic pressure and calculation first test head (21) with treater (23) of differential pressure between second test head (22), first test head (21) with second test head (22) are fixed in the not co-altitude position of slider (4).

2. The freezing point detecting instrument according to claim 1, wherein: the adjusting mechanism (5) comprises a fixing block (51) and an adjusting rod (52), the fixing block (51) is fixed on the supporting rod (3), the adjusting rod (52) is rotatably connected to the fixing block (51), the axis of the adjusting rod (52) is parallel to the supporting rod (3), and the adjusting rod (52) is in threaded connection with the sliding block (4).

3. The freezing point detecting instrument according to claim 2, wherein: a plurality of guide posts (11) which are parallel to each other are fixed on the fixing block (51), the axes of the guide posts (11) are parallel to the supporting rod (3), and the guide posts (11) penetrate through the sliding block (4).

4. The freezing point detecting instrument according to claim 2, wherein: the adjusting rod (52) is provided with a positioning block (8), and the positioning block (8) is abutted against the top of the fixing block (51).

5. The freezing point detecting instrument according to claim 2, wherein: the adjusting mechanism is characterized in that a mounting groove (9) is formed in the fixing block (51), a rotating bearing (10) is fixed in the mounting groove (9), and the adjusting rod (52) is coaxially fixed on an inner ring of the rotating bearing (10).

6. The freezing point detecting instrument according to claim 2, wherein: the top end of the adjusting rod (52) is provided with a rotating hand wheel (12).

7. The freezing point detecting instrument according to claim 1, wherein: at least three adjusting holes (6) are formed in the sliding block (4), the adjusting holes (6) are evenly distributed in the vertical direction, and the first testing head (21) and the second testing head (22) are fixed in the adjusting holes (6) at different heights respectively.

8. The freezing point detecting instrument according to claim 1, wherein: the supporting rod (3) is provided with a limiting block (13), and the limiting block (13) is located at the position below the sliding block (4).