Precision testing device for permeation container of variable water head pipe

Abstract

The utility model relates to a precision testing device, in particular to a variable water head pipe permeation container precision testing device, which comprises a box body, a support plate, a variable water head pipe, a water tank, a mounting seat, a connecting pipe and a permeation tester, the top of the box body is provided with the support plate, one side of the upper part of the support plate is provided with the water tank, and the top of the water tank is provided with a liquid adding port; two mounting seats are mounted on the supporting plate, and variable water head pipes are mounted on the mounting seats. The sleeves on the two sides are pushed to move outwards, then the penetration tester is placed in place, the sleeves are loosened, the sleeves and the sealing rings slide inwards and are tightly attached to the two ends of the penetration tester, rapid and reliable connection is achieved, and therefore the penetration tester is rapidly connected; the performance of the penetration tester is evaluated through the consistency or repeatability of permeability coefficients obtained through multiple tests and calculation, the two sleeves are pushed towards the two sides after testing is completed, the sleeves are separated from the penetration tester, and therefore the penetration tester can be rapidly disassembled.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of accuracy testing devices, in particular to a kind of variable head pipe penetration container accuracy testing device. BACKGROUND

[0002] Before carrying out the value construction, it is usually necessary to carry out permeability test to soil, and the variable head method refers to the seepage test in which the water head difference between the two ends of the soil sample changes with time during the test. During the test, the glass tube is first filled with water to the required height, and then the initial water head difference between the two ends of the soil sample at the initial moment is recorded. After that, the seepage switch is opened, and the stopwatch is started at the same time. After a period of time Δt, the water head difference between the two ends of the soil sample at the final moment is measured again. According to the test results and Darcy's law, the expression of the permeability coefficient of the soil sample can be derived.

[0003] During the production of the variable head pipe penetration container, in order to ensure that it can provide accurate data when used for permeability test, it is necessary to verify its accuracy. This verification aims to confirm whether the container can support the experimental personnel to correctly calculate the permeability coefficient of the soil. However, during these repeated accuracy tests, the frequent assembly and disassembly of the variable head pipe penetration container become very cumbersome, which hinders the improvement of test efficiency and makes it difficult to quickly complete the accuracy verification.

[0004] Therefore, it is necessary to design a variable head pipe penetration container accuracy testing device that is easy to assemble. SUMMARY

[0005] In order to overcome the shortcomings that during repeated accuracy tests, the frequent assembly and disassembly of the variable head pipe penetration container become very cumbersome, which hinders the improvement of test efficiency and makes it difficult to quickly complete the accuracy verification, the utility model provides a variable head pipe penetration container accuracy testing device that is easy to assemble.

[0006] The technical implementation scheme of the utility model discloses: a variable water head pipe permeation container precision testing device, including box, support plate, variable water head pipe, water tank, mounting seat, connecting pipe and permeation tester, the top of box is equipped with support plate, the upper side of support plate is equipped with water tank, the top of water tank is equipped with liquid adding opening, two mounting seats are installed on the support plate, the variable water head pipe is installed on the mounting seat, the variable water head pipe is connected with water tank through connecting pipe and is communicated, the permeation tester is arranged in the box, still include first thermometer, water delivery pipe, first ball valve, water outlet pipe, second ball valve, second thermometer, third ball valve, fixed seat, connector, elastic piece, sleeve and sealing ring, the first thermometer and third ball valve are installed on the connecting pipe, the variable water head pipe is connected with water delivery pipe and is communicated, the first ball valve is installed on the water delivery pipe, the fixed seat is fixedly connected on both sides in the box, the connector is installed on the fixed seat, the second ball valve is installed on the water outlet pipe, the water outlet pipe is penetrated through one side of the box, the water outlet pipe is connected with one of the connector and is communicated, the second thermometer and second ball valve are installed on the water outlet pipe, the sleeve is slidably arranged on the end of the connector close to the permeation tester, the elastic piece is connected between the sleeve and the connector, two sleeves are connected with the water inlet end and the water outlet end of the permeation tester respectively, the sealing ring is installed on the inner side of the sleeve.

[0007] Further, still include three-way pipe, air pump and gas delivery pipe, the three-way pipe is installed on the water delivery pipe, the air pump is installed on one side of the box, the three-way pipe is connected with the air pump through the gas delivery pipe and is communicated.

[0008] Further, still include electric heating pipe, control panel, hinge and cover plate, the control panel is installed on one side of the box, the electric heating pipe is installed on the bottom in the box, the electric heating pipe is signal connected with the control panel, the hinge is installed on one side of the box, the cover plate is jointly installed between the hinges.

[0009] Further, still include glass plate, the glass plate is embeddedly installed on one side of the box.

[0010] Further, still include rubber gasket, the rubber gasket is slidably arranged in the sleeve, and the rubber gasket is located between the sleeve and the connector.

[0011] Further, the sealing cover is slidably arranged on the liquid adding opening on the top of the water tank.

[0012] When the permeation container needs to be tested, pure water is added to the water tank, and a standard soil sample is loaded into the permeation tester, and the permeation tester is sealed to be water-tight and air-tight, then the sleeves on both sides are pushed outward to move, the sleeves extrude the elastic members to deform, then the permeation tester is placed in the box, the water outlet end and the water inlet end of the permeation tester are aligned with the two sleeves respectively, and then the sleeves and the sealing rings are slid inward and tightly fit the two ends of the permeation tester to achieve quick and reliable connection, so that the permeation tester is quickly connected, then the third ball valve is opened, pure water is injected into the variable head pipe, the first ball valve is opened, and the pure water seeps into the permeation container, the second ball valve is opened, and the air at the bottom of the permeation tester is discharged until there is no bubble in the overflowing water, the first ball valve, the second ball valve and the third ball valve are closed, then the third ball valve is opened again to inject pure water into the variable head pipe, the water level in the variable head pipe is raised to a predetermined height, and the temperature of the pure water entering the variable head pipe is measured by the first thermometer, the water tank is opened to cut off the water source after the water level in the variable head pipe is stable, the first ball valve and the second ball valve are opened, and the water in the variable head pipe seeps through the soil sample, and when water overflows from the outlet pipe, the initial water head height and the initial time in the variable head pipe are recorded, then the water head and the time are recorded at corresponding time intervals, the water temperature at the outlet pipe is measured by the second thermometer and recorded, and the performance of the permeation tester is evaluated by the consistency or repeatability of the permeation coefficients calculated through multiple tests, and after the test is completed, the two sleeves are pushed to the two sides, the sleeves extrude the elastic members to deform, and the sleeves are separated from the permeation tester, so that the permeation tester is quickly disassembled.

[0013] Before testing, the permeation tester is adjusted to a sealed state, then the permeation tester is connected with the device, water is added to the box to cover the permeation tester, and then the air pump is started, the air pump supplies air to the permeation tester through the air pipe, when the permeation tester is not tightly sealed, the air is discharged through the gap of the permeation tester and bubbles are generated in the box, so that the sealing performance of the permeation tester can be quickly tested.

[0014] When the permeation container is tested for accuracy, the electric heating pipe is started by the control panel, the electric heating pipe generates heat to raise the temperature in the box, so that the temperature in the box can be adjusted according to the needs, and the error caused by inconsistent temperature during testing is reduced, and by turning the cover plate upward, the cover plate can cover the box to maintain a relatively stable temperature in the box.

[0015] Beneficial effect: push the sleeve on both sides to move outward, then place the permeameter in place, loosen the sleeve, and the sleeve and sealing ring slide inward and tightly fit the two ends of the permeameter, realizing quick and reliable connection, so that the permeameter is quickly connected, the consistency or repeatability of the permeability coefficient calculated through multiple tests is used to evaluate the performance of the permeameter, and after the test is completed, the two sleeves are pushed to the two sides, so that the sleeve is separated from the permeameter, thereby realizing quick disassembly of the permeameter. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0017] Figure 2 It is a three-dimensional sectional structure schematic diagram of the box body, the supporting plate and the glass plate of the utility model.

[0018] Figure 3 It is a three-dimensional sectional structure schematic diagram of the variable head pipe, the water tank and the connecting pipe of the utility model.

[0019] Figure 4 It is a three-dimensional sectional structure schematic diagram of the box body, the air pump and the gas conveying pipe of the utility model.

[0020] Figure 5 It is a three-dimensional sectional structure schematic diagram of the fixing seat, the permeameter and the sleeve of the utility model.

[0021] Figure 6 It is an explosion view of the permeameter, the connector and the sleeve of the utility model.

[0022] Reference signs: 1 box body, 2 supporting plate, 3 variable head pipe, 4 water tank, 5 mounting seat, 6 connecting pipe, 7 first thermometer, 8 water conveying pipe, 9 first ball valve, 10 permeameter, 11 water outlet pipe, 1101 second ball valve, 1102 second thermometer, 1103 third ball valve, 12 fixing seat, 13 connector, 14 elastic member, 15 sleeve, 16 sealing ring, 17 tee pipe, 18 air pump, 19 gas conveying pipe, 20 electric heating pipe, 21 control panel, 22 hinge, 23 cover plate, 24 glass plate, 25 rubber gasket. DETAILED DESCRIPTION

[0023] The utility model will be further described in combination with the embodiments shown in the drawings.

[0024] Embodiment 1: a variable head pipe permeameter precision testing device, refer to Figures 1-6As shown, including the box 1, support plate 2, variable head tube 3, water tank 4, mounting seat 5, connecting pipe 6 and penetration tester 10, the box 1 top is installed by bolt connection mode support plate 2, support plate 2 upper rear is installed by bolt connection mode water tank 4, water tank 4 top is provided with liquid inlet, the liquid inlet of water tank 4 top is provided with sealing cover, sealing cover is used to seal the pure water in water tank 4, support plate 2 is installed by bolt connection mode two upper and lower distribution mounting seat 5, mounting seat 5 is installed by bolt connection mode variable head tube 3, variable head tube 3 and water tank 4 are connected and communicated through connecting pipe 6, the box 1 is provided with penetration tester 10, the box 1 right side is embedded glass plate 24, the test condition of penetration tester 10 is observed through glass plate 24, still including first thermometer 7, water pipe 8, first ball valve 9, water outlet pipe 11, second ball valve 1101, second thermometer 1102, third ball valve 1103, fixing seat 12, connector 13, elastic element 14, sleeve 15 and sealing ring 16, connecting pipe 6 is installed by bolt connection mode first thermometer 7 and third ball valve 1103, variable head tube 3 bottom is connected and communicated with water pipe 8, water pipe 8 is installed with first ball valve 9, both sides of the box 1 inside are fixedly connected with fixing seat 12, fixing seat 12 is installed by bolt connection mode connector 13, water outlet pipe 11 is installed by bolt connection mode second ball valve 1101, the box 1 side is penetrated with water outlet pipe 11, water outlet pipe 11 is connected and communicated with the connector 13 of the front side of penetration tester 10, water outlet pipe 11 is installed by bolt connection mode second thermometer 1102 and second ball valve 1101, the end of connector 13 close to penetration tester 10 is slidably provided with sleeve 15, sleeve 15 and connector 13 are connected with elastic element 14, two sleeves 15 are connected with the water inlet end and water outlet end of penetration tester 10 respectively, the inside of sleeve 15 is installed with sealing ring 16, the inside of sleeve 15 is slidably provided with rubber gasket 25, rubber gasket 25 is located between sleeve 15 and connector 13, rubber gasket 25 is used to enhance the sealing between sleeve 15 and connector 13.

[0025] When the permeation container needs to be tested, pure water is added to the water tank 4, and a standard soil sample is loaded into the permeation tester 10, and the permeation tester 10 is sealed to be water-tight and air-tight, then the sleeves 15 on both sides are pushed outward to move, the sleeves 15 extrude the elastic members 14 to deform, then the permeation tester 10 is placed in the box 1, the water outlet end and the water inlet end of the permeation tester 10 are aligned with the two sleeves 15 respectively, and then the sleeves 15 and the sealing rings 16 are slid inward and tightly fit the two ends of the permeation tester 10 to achieve quick and reliable connection, so that the permeation tester 10 is quickly connected, then the third ball valve 1103 is opened, pure water is injected into the variable head pipe 3, the first ball valve 9 is opened, and the pure water permeates into the permeation container, the second ball valve 1101 is opened, and the air at the bottom of the permeation tester 10 is discharged until there is no bubble in the overflowing water, the first ball valve 9, the second ball valve 1101 and the third ball valve 1103 are closed, then the third ball valve 1103 is opened again to inject pure water into the variable head pipe 3, so that the water level in the variable head pipe 3 rises to a predetermined height, and the temperature of the pure water entering the variable head pipe 3 is measured by the first thermometer 7, after the water level in the variable head pipe 3 is stable, the water tank 4 is opened to cut off the water source, the first ball valve 9 and the second ball valve 1101 are opened, and the water in the variable head pipe 3 permeates through the soil sample, when the water overflowed from the water outlet pipe 11, the initial water head height and the initial time in the variable head pipe 3 are recorded, then the water head and the time are recorded at corresponding time intervals, the water temperature at the water outlet pipe 11 is measured by the second thermometer 1102 and recorded, and the different initial water head heights in the variable head pipe 3 are repeated for 5-6 times, so that the consistency or repeatability of the permeation coefficient calculated by multiple tests is used to evaluate the performance of the permeation tester 10, and after the test is completed, the two sleeves 15 are pushed to the two sides, the sleeves 15 extrude the elastic members 14 to deform, and the sleeves 15 are separated from the permeation tester 10, so that the permeation tester 10 is quickly disassembled.

[0026] Example 2: Based on example 1, refer to Figure 4 As shown, it also includes a three-way pipe 17, an air pump 18 and a gas conveying pipe 19, the three-way pipe 17 is installed on the water conveying pipe 8 by bolt connection, the air pump 18 is installed on the rear side of the box 1 by bolt connection, and the three-way pipe 17 and the air pump 18 are connected and communicated through the gas conveying pipe 19.

[0027] Before testing, the permeation tester 10 is adjusted to a sealed state, then the permeation tester 10 is connected with the device, water is added to the box 1 to make the water cover the permeation tester 10, and then the air pump 18 is started, the air pump 18 conveys air into the permeation tester 10 through the gas conveying pipe 19, when the permeation tester 10 is not tightly sealed, the air is discharged through the gap of the permeation tester 10 and bubbles are generated in the box 1, so that the sealing performance of the permeation tester 10 is quickly tested.

[0028] Referring to Figure 2 and Figure 4 As shown in the figure, it further comprises an electric heating pipe 20, a control panel 21, a hinge 22 and a cover plate 23, the control panel 21 is installed on one side of the box body 1, the electric heating pipe 20 is installed on the bottom of the box body 1, the electric heating pipe 20 is signal connected with the control panel 21, two hinges 22 are installed on the top front side of the box body 1 through bolt connection, and the cover plate 23 is installed between the two hinges 22.

[0029] When the precision of the permeation tester 10 is tested, the electric heating pipe 20 is started through the control panel 21, the electric heating pipe 20 generates heat to increase the ambient temperature in the box body 1, so that the temperature in the box body 1 can be adjusted according to the demand, the error caused by the inconsistent temperature during the test is reduced, and the box body 1 is covered by the cover plate 23 by turning the cover plate 23 upward, so that the temperature in the box body 1 is maintained relatively stable.

[0030] The above-mentioned embodiments only express the preferred embodiments of the present application, the description is more specific and detailed, but it cannot be understood as the limitation of the patent scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications, improvements and substitutions can be made, which all belong to the protection scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A variable head pipe permeation container precision testing device, comprising a box (1), a support plate (2), a variable head pipe (3), a water tank (4), a mounting seat (5), a connecting pipe (6) and a permeation tester (10), the top of the box (1) is provided with the support plate (2), the upper side of the support plate (2) is provided with the water tank (4), the top of the water tank (4) is provided with a liquid adding opening, two mounting seats (5) are arranged on the support plate (2), the variable head pipe (3) is arranged on the mounting seat (5), the variable head pipe (3) and the water tank (4) are connected and communicated through the connecting pipe (6), and the permeation tester (10) is arranged in the box (1), characterized in that, The first thermometer (7), the water pipe (8), the first ball valve (9), the water outlet pipe (11), the second ball valve (1101), the second thermometer (1102), the third ball valve (1103), the fixed seat (12), the connector (13), the elastic piece (14), the sleeve (15) and the sealing ring (16) are further included.

2. A variable head pipe permeameter accuracy test apparatus as defined in claim 1, wherein, The tee pipe (17), the air pump (18) and the air pipe (19) are further included.

3. A variable head pipe permeameter accuracy test apparatus as defined in claim 2, wherein, The electric heating pipe (20), the control panel (21), the hinge (22) and the cover plate (23) are further included.

4. A variable head pipe permeameter accuracy test apparatus as defined in claim 3, wherein, The glass plate (24) is further included.

5. A variable head pipe permeameter accuracy test apparatus as defined in claim 4, wherein, The rubber gasket (25) is further included.

6. A variable head pipe permeameter accuracy test apparatus as defined in claim 5, wherein, The sealing cover is slidably arranged on the liquid inlet of the water tank (4).

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