Liquid specific gravity determination experimental instrument

Abstract

The utility model provides a liquid specific gravity measurement experimental instrument, and belongs to the technical field of experimental equipment. The liquid specific gravity measurement experimental instrument comprises a leveling support structure and an experimental tube structure. The leveling supporting structure comprises two supporting legs and a supporting piece, the supporting piece is installed between the two supporting legs, a sliding measuring piece and a movable piece are installed on the supporting piece in a sliding mode, the experiment pipe structure comprises a connecting pipeline and a water supply container, and the pressure measuring pipe I and the pressure measuring pipe IV are communicated and form a U-shaped part. And one side of the piezometric tube I and one side of the piezometric tube IV are communicated and fixed with a U-shaped piezometric tube II and a U-shaped piezometric tube III. According to the utility model, the water pressure in the experimental instrument can be changed, multiple groups of measured data are used for calculating and designing an open type water supply container, the water temperature can be monitored and corrected in real time, the influence of water temperature change on the experimental result is avoided, multiple groups of pipelines are arranged for measuring the specific gravity of various liquids, the time cost is greatly saved, and the efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of experimental equipment, in particular to a liquid specific gravity measurement experimental instrument. Background Art

[0002] Liquid specific gravity: usually the ratio of the density of a liquid under standard atmospheric pressure to the density of pure water at 4°C. The measurement of specific gravity can help determine the purity of a liquid, which is very important in certain fields including but not limited to chemistry, food, medicine, petroleum, etc.

[0003] Measuring the specific gravity of liquids is usually based on the Archimedean principle and is measured by displacing liquids. Currently, common liquid specific gravity test instruments often fail to correct for changes in water temperature during the experiment, resulting in inaccurate test results. If theoretical calculations are used for conversion, it will be very difficult and take a lot of extra time. Some test instruments also require a large amount of samples and standard pure water for accurate measurement. If you want to choose an advanced test instrument with high precision and intelligent temperature control, the price may be too expensive, which is also a difficult problem for small laboratories or companies. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a liquid specific gravity measurement test instrument, which aims to improve the problem that the experimental results are not accurate enough due to water temperature changes during the experiment. Conversion through theoretical calculation will increase the difficulty, and advanced test instruments will cause excessively high prices, which are unaffordable for small laboratories or enterprises.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a liquid specific gravity measuring experimental instrument, which comprises a leveling support structure and an experimental tube structure.

[0007] The leveling support structure includes two supporting legs and a supporting member, the supporting member is installed between the two supporting legs, a sliding measuring member and a movable member are slidably installed on the supporting member, the experimental tube structure includes a connecting pipe and a water supply container, both ends of the connecting pipe are connected and fixed with telescopic tubes, the water supply container is fixed on the movable member, the telescopic tube is connected to the water supply container, a pressure measuring tube I and a pressure measuring tube IV are connected and fixed on the connecting pipe, the pressure measuring tube I is connected to the pressure measuring tube IV and forms a U-shaped portion, the pressure measuring tube I is connected to one side of the pressure measuring tube IV and a U-shaped pressure measuring tube II and a U-shaped pressure measuring tube III are fixed.

[0008] In an embodiment of the utility model, the support foot includes a support frame and a first fastening bolt, a first slide groove is opened on one side of the support frame, and a first fastening bolt is threadedly penetrated through one side of the first slide groove.

[0009] In one embodiment of the utility model, the support member includes two experimental support columns, a support beam and a fixed plate, a second slide groove is opened on one side of the two experimental support columns, a first slider is fixed on one side of the two experimental support columns, the first slider is slidably connected to the inside of the first slide groove, the support beam is fixed to the upper ends of the two experimental support columns, a fixed plate is fixed on one side of the two experimental support columns and the support beam, and the upper ends of the pressure measuring tube I, the pressure measuring tube IV, the U-shaped pressure measuring tube II and the U-shaped pressure measuring tube III pass through the support beam and extend to the outside.

[0010] In one embodiment of the utility model, the sliding measuring member includes a slide ruler and a second sliding block, the second sliding block is fixed to the slide ruler, a third sliding groove matching the second sliding block is provided on the top surface of the supporting beam, and the second sliding block is slidably connected to the inside of the third sliding groove.

[0011] In one embodiment of the utility model, the movable part includes a sliding sleeve and a second fastening bolt, the sliding sleeve is slidably connected to the experimental support column, the sliding sleeve is located inside the second sliding groove, the second fastening bolt thread passes through the sliding sleeve, and the water supply container is fixed to the sliding sleeve.

[0012] In an embodiment of the utility model, a control valve and a drain valve I are installed on the connecting pipeline, and the drain valve I is located on one side of the control valve.

[0013] In one embodiment of the utility model, a drain valve II is installed at the bottom of the U-shaped portion, and drain valves III are installed at the bottoms of both the U-shaped pressure measuring tube II and the U-shaped pressure measuring tube III.

[0014] In one embodiment of the utility model, a plurality of pipe clamps are installed on the surface of the fixing plate, and the pressure measuring tube I, the pressure measuring tube IV, the U-shaped pressure measuring tube II and the U-shaped pressure measuring tube III are clamped on the plurality of pipe clamps.

[0015] The beneficial effects of the utility model are as follows: the utility model is a liquid specific gravity measurement test instrument obtained by the above design. When in use, the valve is fully closed, the liquid A to be measured is injected into the pressure measuring tube I or the pressure measuring tube IV, and the liquid B to be measured is injected into the U-shaped pressure measuring tube II and the U-shaped pressure measuring tube III, the first fastening bolt on the support frame is loosened, and the height of the support member is adjusted up and down to make the liquid levels of the liquid to be measured in the pressure measuring tube I and the pressure measuring tube IV and the U-shaped pressure measuring tube II and the U-shaped pressure measuring tube III equal, and then the first fastening bolt is tightened to complete the leveling before the experiment. Water is added to the water supply container until the liquid level of the water supply container is close to half of the container height. The height of one of the water supply containers is changed by moving the sliding sleeve and fixed by the second fastening bolt, and the sliding ruler is moved to read the height difference H2, H3, H5 of the liquid level of the liquid to be measured inside the U-shaped pressure measuring tube II, the U-shaped pressure measuring tube III, the pressure measuring tube I and the pressure measuring tube IV, and the water column height H1 and H4 inside the connecting pipeline and the two water supply containers are read at the same time. The specific gravity of the liquid to be tested in U-type pressure gauge tubes II and III is H1 / H2=H4 / H3, and the specific gravity of the liquid to be tested in pressure gauge tubes I and IV is (H1-H2) / H5. After the experiment, open drain valves I, II and III to discharge the liquid in the experimental instrument. In this way, the water pressure in the experimental instrument can be changed during use. Multiple sets of data are measured for calculation, which is simple to operate. The design of an open water supply container can monitor and correct the water temperature in real time to avoid the influence of water temperature changes on the experimental results. While the liquid is densely measured, the size of the entire experimental instrument is greatly improved, which is convenient for transportation and placement. Multiple sets of pipes are set up to measure the specific gravity of multiple liquids, which greatly saves time and cost and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of an experimental process of a liquid specific gravity measurement experimental instrument provided by an embodiment of the utility model;

[0018] Figure 2 A schematic diagram of the second structure of the experimental process of the liquid specific gravity measurement experimental instrument provided by the embodiment of the utility model;

[0019] Figure 3 A schematic diagram of the structure of the liquid specific gravity measurement experimental instrument experimental process provided by the embodiment of the utility model;

[0020] Figure 4A schematic diagram of a leveling support structure of a liquid specific gravity measurement test instrument provided in an embodiment of the utility model;

[0021] Figure 5 For this utility model Figure 4 Enlarged view of point A in the middle;

[0022] Figure 6 For this utility model Figure 4 Enlarged view of point B in the middle;

[0023] Figure 7 A schematic diagram of the structure of a sliding measuring member of a liquid specific gravity measuring experimental instrument provided in an embodiment of the utility model.

[0024] In the figure: 100-leveling support structure; 110-support foot; 111-support frame; 112-first slide slot; 113-first fastening bolt; 120-support member; 121-experimental support column; 122-second slide slot; 123-support beam; 1231-third slide slot; 124-fixed plate; 125-first slider; 130-sliding measuring member; 131-sliding ruler; 132-second slider; 140-movable Part; 141-sleeve; 142-second fastening bolt; 200-experimental pipe structure; 210-connecting pipe; 211-control valve; 212-drain valve I; 220-telescopic pipe; 230-water supply container; 240-pressure measuring tube I; 241-pressure measuring tube IV; 242-U-shaped part; 243-drain valve II; 250-U-shaped pressure measuring tube II; 251-U-shaped pressure measuring tube III; 252-drain valve III; 260-pipe clamp. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Example

[0026] See also Figure 1-Figure 7 The utility model provides a technical solution: a liquid specific gravity measurement test instrument, including a leveling support structure 100 and a test tube structure 200.

[0027] See also Figure 1-Figure 7 The leveling support structure 100 includes two support legs 110 and a support member 120 . The support member 120 is installed between the two support legs 110 . A sliding measuring member 130 and a movable member 140 are slidably installed on the support member 120 .

[0028] The supporting foot 110 includes a supporting frame 111 and a first fastening bolt 113. A first sliding groove 112 is provided on one side of the supporting frame 111. A first fastening bolt 113 is threadedly penetrated on one side of the first sliding groove 112. A threaded hole matching the first fastening bolt 113 is provided inside the first sliding groove 112, which is used for the first fastening bolt 113 to extend and retract back and forth, thereby facilitating the extrusion and fixation of the first slider 125.

[0029] The support member 120 includes two experimental support columns 121, a support beam 123 and a fixed plate 124. A second slide groove 122 is opened on one side of the two experimental support columns 121. A first slider 125 is fixed on one side of the two experimental support columns 121. The first slider 125 is slidably connected to the inside of the first slide groove 112. The support beam 123 is fixed to the upper ends of the two experimental support columns 121. A fixed plate 124 is fixed on one side of the two experimental support columns 121 and the support beam 123. The upper ends of the pressure measuring tube I 240, the pressure measuring tube IV 241, the U-shaped pressure measuring tube II 250 and the U-shaped pressure measuring tube III 251 pass through the support beam 123 and extend to the outside. Here, the support member 120 is used for the installation support of the sliding measuring member 130 and the experimental tube structure 200.

[0030] The sliding measuring member 130 includes a slide ruler 131 and a second slide block 132. The second slide block 132 is fixed to the slide ruler 131. The top surface of the supporting beam 123 is provided with a third slide groove 1231 matching the second slide block 132. The second slide block 132 is slidably connected inside the third slide groove 1231. Here, by sliding the second slide block 132 inside the third slide groove 1231, the slide ruler 131 can be brought close to the pipeline, thereby facilitating the reading of the liquid level scale. The movable part 140 includes a sleeve 141 and a second fastening bolt 142. The sleeve 141 is slidably connected to the experimental support column 121. The sleeve 141 is located inside the second slide groove 122. The second fastening bolt 142 is threaded through the sleeve 141. The water supply container 230 is fixed to the sleeve 141. A threaded hole matching the second fastening bolt 142 is provided inside the sleeve 141. The threaded hole is provided for the second fastening bolt 142 to extend and retract back and forth, and to be squeezed against the surface of the experimental support column 121 to adjust and fix the water supply container 230.

[0031] See also Figure 1-Figure 3The experimental tube structure 200 includes a connecting pipe 210 and a water supply container 230. The two ends of the connecting pipe 210 are connected and fixed with a telescopic tube 220. The water supply container 230 is fixed on the movable part 140. The telescopic tube 220 is connected to the water supply container 230. A pressure measuring tube I 240 and a pressure measuring tube IV 241 are connected and fixed to the connecting pipe 210. The pressure measuring tube I 240 is connected to the pressure measuring tube IV 241 and forms a U-shaped portion 242. The pressure measuring tube I 240 is connected to one side of the pressure measuring tube IV 241 and a U-shaped pressure measuring tube II 250 and a U-shaped pressure measuring tube III 251 are fixed.

[0032] A control valve 211 and a drain valve I 212 are installed on the connecting pipe 210. The drain valve I 212 is located on one side of the control valve 211. The control valve 211 is used for on-off control of the connecting pipe 210, and the drain valve I 212 is used for discharge after the experiment is completed. A drain valve II 243 is installed at the bottom of the U-shaped portion 242, and drain valves III 252 are installed at the bottom of the U-shaped pressure measuring tube II 250 and the U-shaped pressure measuring tube III 251. The drain valve II 243 and the drain valve III 252 are used for discharging the test liquid after the experiment is completed. A plurality of pipe clamps 260 are installed on the surface of the fixing plate 124, and the pressure measuring tube I 240, the pressure measuring tube IV 241, the U-shaped pressure measuring tube II 250 and the U-shaped pressure measuring tube III 251 are clamped on the plurality of pipe clamps 260, where the pipe clamps 260 are used to fix the pressure measuring tube I 240, the pressure measuring tube IV 241, the U-shaped pressure measuring tube II 250 and the U-shaped pressure measuring tube III 251.

[0033] Specifically, the working principle of the liquid specific gravity tester is as follows: when in use, the valve is fully closed, the liquid A to be tested is injected into the pressure measuring tube I 240 or the pressure measuring tube IV 241, and the liquid B to be tested is injected into the U-shaped pressure measuring tube II 250 and the U-shaped pressure measuring tube III 251, the first fastening bolt 113 on the support frame 111 is loosened, and the height of the support member 120 is adjusted up and down to make the liquid levels on both sides of the pressure measuring tube I 240 and the pressure measuring tube IV 241 and the U-shaped pressure measuring tube II 250 and the U-shaped pressure measuring tube III 251 equal, and then the first fastening bolt 113 is tightened to complete the leveling before the experiment. Water is added to the water supply container 230 until the liquid level of the water supply container 230 is close to half of the container height. By moving the sleeve 141 to change the height of one of the water supply containers 230 and fixing it with the second fastening bolt 142, the sliding ruler 131 is moved to read the height differences H2, H3, and H5 of the liquid levels to be measured in the U-shaped pressure measuring tube II 250, the U-shaped pressure measuring tube III 251, the pressure measuring tube I 240, and the pressure measuring tube IV 241, and at the same time read the water column heights H1 and H4 in the connecting pipe 210 and the two water supply containers 230. The specific gravity of the liquid to be measured in the U-shaped pressure measuring tube II 250 and the U-shaped pressure measuring tube III 251 is H1 / H2=H4 / H3, and the specific gravity of the liquid to be measured in the pressure measuring tube I 240 and the pressure measuring tube IV 241 is (H1-H2) / H5. After the experiment, open drain valve I 212, drain valve II 243 and drain valve III 252 to drain the liquid in the experimental instrument. In this way, the water pressure in the experimental instrument can be changed during use, and multiple sets of data are measured for calculation. The operation is simple. The design of the open water supply container 230 can monitor and correct the water temperature in real time to avoid the influence of water temperature changes on the experimental results. While the measured liquid is in a dense state, the size of the entire experimental instrument is greatly improved, which is convenient for transportation and placement. Multiple sets of pipes are set to measure the specific gravity of multiple liquids, which greatly saves time and cost and improves efficiency.

[0034] It should be noted that H1, H2, H3, H4 and H5 are indicated by the markings in the accompanying figure 3.

[0035] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A liquid specific gravity measurement test instrument, comprising a leveling support structure (100) and a test tube structure (200) installed on the leveling support structure (100), characterized in that: The leveling support structure (100) comprises two support legs (110) and a support member (120), wherein the support member (120) is installed between the two support legs (110), and a sliding measuring member (130) and a movable member (140) are slidably mounted on the support member (120); The experimental tube structure (200) comprises a connecting pipe (210) and a water supply container (230). The two ends of the connecting pipe (210) are connected and fixed with telescopic pipes (220). The water supply container (230) is fixed on the movable part (140). The telescopic pipe (220) is connected with the water supply container (230). A pressure measuring tube I (240) and a pressure measuring tube IV (241) are connected and fixed on the connecting pipe (210). The pressure measuring tube I (240) is connected with the pressure measuring tube IV (241) to form a U-shaped portion (242). The pressure measuring tube I (240) is connected with one side of the pressure measuring tube IV (241) to form a U-shaped pressure measuring tube II (250) and a U-shaped pressure measuring tube III (251).

2. A liquid specific gravity measuring test instrument according to claim 1, characterized in that: The support foot (110) comprises a support frame (111) and a first fastening bolt (113); a first slide groove (112) is provided on one side of the support frame (111); and a first fastening bolt (113) is threadedly penetrated on one side of the first slide groove (112).

3. A liquid specific gravity measuring test instrument according to claim 2, characterized in that: The support member (120) comprises two experimental support columns (121), a support beam (123) and a fixed plate (124); a second slide groove (122) is provided on one side of the two experimental support columns (121); a first slider (125) is fixed on one side of the two experimental support columns (121); the first slider (125) is slidably connected inside the first slide groove (112); the support beam (123) is fixed to the upper ends of the two experimental support columns (121); a fixed plate (124) is fixed on one side of the two experimental support columns (121) and the support beam (123); the upper ends of the pressure measuring tube I (240), the pressure measuring tube IV (241), the U-shaped pressure measuring tube II (250) and the U-shaped pressure measuring tube III (251) pass through the support beam (123) and extend to the outside.

4. A liquid specific gravity measuring test instrument according to claim 3, characterized in that: The sliding measuring member (130) comprises a sliding ruler (131) and a second sliding block (132), wherein the second sliding block (132) is fixed to the sliding ruler (131), and a third sliding groove (1231) matching the second sliding block (132) is formed on the top surface of the supporting crossbeam (123), and the second sliding block (132) is slidably connected inside the third sliding groove (1231).

5. The liquid specific gravity measuring test instrument according to claim 3, characterized in that: The movable part (140) comprises a sliding sleeve (141) and a second fastening bolt (142); the sliding sleeve (141) is slidably sleeved on the experimental support column (121); the sliding sleeve (141) is located inside the second sliding groove (122); the second fastening bolt (142) is threadedly penetrated through the sliding sleeve (141); and the water supply container (230) is fixed to the sliding sleeve (141).

6. A liquid specific gravity measuring test instrument according to claim 1, characterized in that: A control valve (211) and a drain valve I (212) are installed on the connecting pipe (210), and the drain valve I (212) is located on one side of the control valve (211).

7. A liquid specific gravity measuring test instrument according to claim 1, characterized in that: A drain valve II (243) is installed at the bottom of the U-shaped portion (242), and a drain valve III (252) is installed at the bottom of both the U-shaped pressure measuring tube II (250) and the U-shaped pressure measuring tube III (251).

8. The liquid specific gravity measuring test instrument according to claim 3, characterized in that: A plurality of pipe clamps (260) are installed on the surface of the fixing plate (124), and the pressure measuring tube I (240), the pressure measuring tube IV (241), the U-shaped pressure measuring tube II (250) and the U-shaped pressure measuring tube III (251) are clamped on the plurality of pipe clamps (260).

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