CN114577649A - Box-type load-holding etching test device - Google Patents
Box-type load-holding etching test device Download PDFInfo
- Publication number
- CN114577649A CN114577649A CN202210211660.9A CN202210211660A CN114577649A CN 114577649 A CN114577649 A CN 114577649A CN 202210211660 A CN202210211660 A CN 202210211660A CN 114577649 A CN114577649 A CN 114577649A
- Authority
- CN
- China
- Prior art keywords
- box
- box body
- water
- hydraulic cylinder
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 238000005530 etching Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 95
- 238000007789 sealing Methods 0.000 claims abstract description 70
- 230000003628 erosive effect Effects 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 20
- 239000011150 reinforced concrete Substances 0.000 abstract description 5
- 230000002457 bidirectional effect Effects 0.000 abstract description 3
- 210000000476 body water Anatomy 0.000 abstract description 2
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 239000003513 alkali Substances 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 abstract 1
- 238000004088 simulation Methods 0.000 description 5
- 238000012999 compression bending Methods 0.000 description 2
- 238000012669 compression test Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 150000003841 chloride salts Chemical class 0.000 description 1
- 230000001808 coupling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 230000003204 osmotic effect Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/56—Investigating resistance to wear or abrasion
- G01N3/567—Investigating resistance to wear or abrasion by submitting the specimen to the action of a fluid or of a fluidised material, e.g. cavitation, jet abrasion
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/002—Test chambers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/20—Investigating strength properties of solid materials by application of mechanical stress by applying steady bending forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/024—Corrosive
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental & Geological Engineering (AREA)
- Environmental Sciences (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
A box-type load-holding erosion test device comprises a water tank, a water pressure control system, a water pipe joint, an oil pressure control system and a hydraulic cylinder; the water tank comprises a tank body and a tank cover; the box cover is fixedly connected with a hydraulic cylinder, the hydraulic cylinder is hermetically connected with the box cover through an end cover of the hydraulic cylinder, sealing parts are arranged at the connecting position and the moving position of the end cover, and the end cover is also provided with four drainage holes with horizontal, horizontal and vertical axes; the right transverse wall plate of the box body is also fixedly connected with a hydraulic cylinder to perform a bidirectional stress test on concrete, and the left transverse wall plate of the box body is provided with a box body water inlet hole and is communicated with a water pressure control system through a water pipe joint; a window hole is formed in the middle of a bottom plate of the box body, and a boss and a rubber sealing gasket are arranged on the window hole; the oil pressure control system controls the movement and the pressure of a piston in the hydraulic cylinder; the left end of the piston rod is movably connected with a pressing plate; the test device is used for carrying out durability tests on reinforced concrete members under the effects of saline-alkali corrosion and ballast multi-coupling.
Description
The invention is a divisional application of a patent with the application number of 2018113745843, the application date of 2018, 11 and 19 months, and the invention name of 'a box type load-bearing erosion test device'.
Technical Field
The invention relates to a box type load-bearing erosion test device, in particular to a concrete member load-bearing erosion test device, and belongs to the field of concrete test equipment.
Background
In recent years, China builds a large number of reinforced concrete structure buildings in coastal areas to meet the needs of rapid development of economy, such as tunnel traffic. The tunnel runs through the underground, the mountain body and even the bottom of the river and the sea, does not occupy the land surface, shortens the driving mileage, relieves the traffic pressure and brings great convenience to the life of people. As is well known, the lining of the tunnel is made of reinforced concrete, the stratum pressure of the rock mass of the tunnel is borne by the reinforced concrete, and meanwhile, the underground water also applies larger osmotic water pressure to the outer side of the reinforced concrete lining, so that the tunnel lining is under the combined action of a stress field and a seepage field for a long time; in addition, tunnel linings are subject to erosion from corrosive media such as sulfates, chlorides, etc. contained in the ground water.
In order to know whether the concrete for tunnel lining can meet the corrosion of a stress field, a seepage field and a corrosive medium of a local tunnel and improve the service life of the tunnel to the maximum extent, a simulation test needs to be carried out on a concrete member of the tunnel lining in advance, and the design of the concrete for tunnel lining is determined through the test on the concrete member.
At present, most of test equipment for concrete members is a single-project test device, and the actual working state of a tunnel lining cannot be effectively reflected, namely, a high-simulation test cannot be carried out.
Disclosure of Invention
Aiming at the technical defects of the existing test device, the invention provides a box type load-bearing erosion test device, which not only can artificially control the components, concentration and water pressure of a corrosive medium, but also can carry out a compression test on a concrete member, and the load of the compression test is adjustable, thereby realizing a high-simulation test.
The invention is realized by the following technical scheme:
a box-type load-holding erosion test device comprises a water tank, a water pressure control system, a water pipe joint, an oil pressure control system and a hydraulic cylinder; the method is characterized in that: the water tank comprises a tank body and a tank cover; the box body is in a cuboid groove shape, the groove opening is upward, a flange is arranged on the groove opening, and a sealing gasket and a box cover are sequentially arranged on the flange; the flange is fixedly connected with the box cover; a water inlet hole of the box body is arranged at the middle part close to the upper part of the transverse wall plate at the left end of the box body, and a water pipe joint is arranged outside the water inlet hole of the box body; the water pipe joint is communicated with a water pressure control system; at least one pair of vertical concave grooves are symmetrically and fixedly connected to the longitudinal left side of the box body and the inner parts of the front wall plate and the rear wall plate respectively, and the notches are opposite; a tail plate which is not higher than the height of the inner wall of the box body is inserted between the corresponding notches of the concave grooves; the middle part of the transverse wall plate at the right end of the box body is provided with a mounting hole; the hydraulic cylinder is a single-piston-rod hydraulic cylinder, a piston rod penetrates through the mounting hole from the outside of the right end of the box body to enter the box body, and the hydraulic cylinder is fixed outside the transverse wall plate at the right end of the box body in a sealing manner by utilizing the fixing hole in the end cover; the oil pressure control system controls the movement and the pressure of a piston in the hydraulic cylinder; the left end of the piston rod is movably connected with a pressing plate; the bottom of the box body is also provided with box legs;
a window hole is formed in the middle of a bottom plate of the box body, a boss is arranged on the upper opening edge of the window hole, and a rubber sealing gasket is arranged on the boss;
the middle part of the box cover is also provided with an A mounting hole for mounting a second set of hydraulic cylinder; the second set of hydraulic cylinder has the same structure as the hydraulic cylinder; the box cover is also provided with a valve; the right end face of the box body is provided with an overflow valve, and the bottom face of the box body is provided with a stop valve; the output ends of the overflow valve and the stop valve are connected to the water supply tank;
the end cover of the hydraulic cylinder, a left positioning journal and a right positioning journal are respectively arranged at two ends of the end cover, the middle part of the end cover is step-shaped, the left side of the end cover is circular, the right side of the end cover is square, and the side length of the end cover is less than or equal to that of an inscribed square of the left circular shape, so that a left thrust surface of the end cover is circular, a right thrust surface of the end cover is square, and a sealing groove B and a sealing groove C are correspondingly arranged on the left thrust surface and the right thrust surface; a piston rod guide hole is axially formed in the end cover; an E sealing groove, a liquid collecting groove and an F sealing groove are sequentially arranged in the guide hole from left to right in the axial direction; on the plane around the square in the middle of the end cover, the middle of each plane is provided with a drain hole communicated with the liquid collecting tank;
the water pressure control system comprises a water supply tank, a filter, a water pump, an unloading valve, a one-way valve and an overflow valve, wherein the input end of the water pump is connected with the water supply tank through the filter; the output end of the water pump is divided into two paths, one path of the output end of the water pump is the unloading valve and the water supply tank, the other path of the output end of the water pump is the one-way valve, and the output end of the one-way valve is respectively connected to a water pipe joint at the left end of the box body, the control end (A end) of the unloading valve and a pressure gauge switch to the pressure gauge.
The water tank is made of metal.
The surface of the water tank is provided with a protective layer.
The water pipe joint is of a cylindrical two-end type, one end connected with the box body is provided with a flange, and the other end is provided with pipe threads.
The tail plate is inserted into the concave groove, the tail plate and the concave groove are in clearance fit, and the clearance is not less than 0.5 mm.
The left end of the piston rod is provided with a hinge hole.
The piston rod is movably connected with the pressure plate in a hinge connection mode.
The window hole is square.
The upper plane of the boss is provided with a threaded hole; the threaded hole is a blind hole.
The invention has the advantages and beneficial effects that:
the device has the advantages that the device realizes the aim of simultaneously carrying out load holding and permeation of the concrete member, meets the requirement of a seepage-stress field coupling effect test, can artificially control the components and the concentration of a corrosive medium, and can control the water pressure of the concrete member through a water pressure control system; meanwhile, the double hydraulic cylinders are used for carrying out compression bending test on the concrete member, and the oil pressure system of the hydraulic cylinders is used for adjusting the pressure intensity of the hydraulic cylinders, so that the high-simulation test on the concrete member is realized. The left end cover of the hydraulic cylinder realizes the bidirectional sealing of one end cover by a bidirectional sealing ring and additionally arranging a liquid collecting groove and a drain hole.
In addition, when the system works in an overflow state, the water pressure in the box body is stable and can keep flowing, so that the flowing of the underground water in the nature can be simulated.
Advantages and features of the present invention will be illustrated and explained by the following non-restrictive description of preferred embodiments thereof, given by way of example only with reference to the accompanying drawings.
Drawings
FIG. 1 is a longitudinal cross-sectional view of the device;
FIG. 2 is a top view of FIG. 1 with the cover removed;
FIG. 3 is an axial cross-sectional view of the end cap 25;
FIG. 4 is a sectional view taken along line A-A of FIG. 3;
fig. 5 is a hydraulic control system.
Wherein: 1. the hydraulic pressure sealing device comprises a box cover, a mounting hole A, a sealing gasket 2, a sealing gasket 3, a valve 4, a concave groove 5, a tail plate 6, a screw A, a sealing ring 8, a water pipe joint 9, a screw B, a box body 10a, a box body water inlet hole 10B, a window hole 10C, a mounting hole 11, a box foot 12, a locking nut 13, a support stud 15, a rubber sealing gasket 16, an upper pressing plate 17, a sealing bag 18, a lower pressing plate 19, a shaft sleeve 19a, a shaft sleeve hole 19B, a flange A, a cushion 20, a cushion 21, a pressing plate 211, an upper pressing plate 22, a pin shaft 23, a piston rod 24, a sealing ring B, a sealing ring 25, an end cover 26, a sealing ring E, a sealing ring 27, a sealing ring C, a sealing ring 28, a sealing ring F sealing ring 29, a hydraulic cylinder 30 and a second hydraulic cylinder;
2501. the hydraulic cylinder positioning structure comprises a left thrust surface, a 2502 positioning shaft neck, a 2503 and E sealing groove, a 2504 and piston rod guiding hole, a 2505 and B sealing groove, a 2506 fixing hole, a 2507 and a drain hole, a 2508 and C sealing groove, a 2509 and a liquid collecting groove, a 2510 and F sealing groove, a 2511 and a right positioning shaft neck, a 2512 and a right thrust surface, a 2513 and a mounting surface, a 2514 and a hydraulic cylinder fixing hole.
Detailed Description
In order to make the purpose and technical solution of the present invention clearer, the technical solution of the present invention will be further described with reference to the accompanying drawings.
It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.
The meaning of "left, right, front and back" in the present invention means that when the reader faces the attached drawings, the left side of the reader is left, the right side of the reader is right, the distance from the reader is front, and the distance from the reader is back, and is not a specific limitation to the present invention.
The term "connected" as used herein may mean either a direct connection between the components or an indirect connection between the components via other components.
As shown in fig. 1 and 2, a box-type holding load erosion test device, the main body of which is a water tank formed by welding a metal carbon structural steel plate, the water tank comprises a tank body 10 and a tank cover 1; the box body 10 is in a cuboid groove shape, the groove opening is upward, a flange is arranged outwards from the groove opening, a sealing gasket 2 and a box cover 1 are sequentially arranged on the flange, and the sealing gasket 2 is made of rubber; the box cover 1 is fixedly connected with a flange of the box body 10 through an A screw 6; the horizontal wallboard of left end of box 10 leans on the department placed in the middle to be equipped with a box inlet opening 10a, and in box inlet opening 10 a's outside, is equipped with water pipe head 8 to make water pipe head 8 and inlet opening 10a keep concentric, water pipe head 8's one end is the flange, through B screw 9, A sealing washer 7 and box 10 fixed connection, water pipe head 8's the other end is the pipe, is equipped with the pipe thread, is connected with output (P2) of check valve 67 among the water pressure control system.
The bottom plate of the box body is provided with a window hole 10b, the upper opening edge of the window hole 10b is provided with a boss, the upper plane of the boss is provided with a threaded hole which is a blind hole, the threaded hole is used for fixing a gasket, the height of the boss is increased, and the test requirements of concrete members with different height sizes are met, and the upper plane of the boss is provided with a rubber sealing gasket 15 which is used for placing the concrete member to be tested on the boss in a sealing manner; the window hole 10b is square and positioned corresponding to the upper press plate 211, and the main function of the window hole 10b is to simulate a culvert.
Two pairs of concave grooves 4 are respectively, vertically, symmetrically and fixedly connected to the longitudinal left side of the box body 10 and the inner parts of the front wall plate and the rear wall plate, the notches are opposite, the aim is to conveniently install concrete members with different lengths and sizes, and a tail plate 5 which is lower than the inner wall of the box body 10 by about 15 mm is inserted between the corresponding notches; the tailboard 5 is the cuboid, and thickness 25 millimeters, and the cooperation between tailboard 5 and the concave groove 4 is clearance fit, and the clearance is 1 millimeter.
A mounting hole 10c is formed in the middle of the transverse wall plate at the right end of the box body 10; the hydraulic cylinder 29 is a single-piston-rod hydraulic cylinder, the piston rod 23 penetrates through the mounting hole 10c from the outside of the right end of the box body and enters the box body, the hydraulic cylinder 29 is hermetically fixed on the outer side of a transverse wall plate at the right end of the box body 10 through a B sealing ring 24, namely an O-shaped sealing ring, by utilizing a fixing hole 2506 of an upper end cover 25 of the hydraulic cylinder 29, the hydraulic cylinder 29 is controlled by an oil pressure control system, the load required by the test of a concrete member is ensured, and the load of a compression bending resistance test is adjustable as required; the left end of the piston rod 23 is hinged with the pressing plate 21 by a pin 22, and the lower plane of the pressing plate 21 is provided with a soft cushion 20 for ensuring the pressing force on the pressing plate 21 to be uniformly applied on the concrete member.
The bottom of the box body 10 is also provided with box legs 11, the box legs 11 are angle irons welded on the box body, and the height is 85 mm.
The middle part of the box cover 1 is provided with an A mounting hole 1a for mounting a second set of hydraulic cylinder 30, and the structure of the second set of hydraulic cylinder 30 is completely the same as that of the hydraulic cylinder 29; the concrete bears the pressure in the horizontal direction and the pressure in the vertical direction, so that the stress state of the concrete in the nature can be simulated more accurately; the box cover 1 is also provided with a valve 3 for emptying the air in the box body 10 when the box body is filled with water;
as shown in fig. 3 and 4, the end cover 25, the left positioning journal 2502 and the right positioning journal 2511 of the hydraulic cylinder 29 are respectively disposed at the left end and the right end of the end cover 25, the middle part of the end cover is stepped, the left side of the end cover is circular, the right side of the end cover is circular and inscribed with a square, that is, the left thrust surface 2501 of the end cover 25 is circular, the right thrust surface 2515 is square, and the left thrust surface and the right thrust surface are correspondingly provided with an annular B sealing groove 2505 and a C sealing groove 2508; the inner diameters of the B seal groove 2505 and the C seal groove 2508 are respectively the same as the outer diameters of the left positioning journal 2502 and the right positioning journal 2511, so that the B seal ring 24 and the C seal ring 27 can be conveniently installed, and the B seal ring 24 and the C seal ring 27 are both O-rings; hydraulic cylinder fixing holes 2514 are symmetrically arranged at four corners of the right thrust surface 2512 and are used for fixedly connecting the end cover 25 with the cylinder body of the hydraulic cylinder; four fixing holes 2506 are symmetrically arranged on the symmetry axis of the mounting surface 2513, and the fixing holes 2506 are symmetrically arranged on the vertical and horizontal symmetry lines of the mounting hole 10c at the positions corresponding to the threaded holes on the wall plate at the right end of the box body 10. After the end cap 25 is fixedly connected to the box 10, the fixing holes 2506 are distributed on the wall plate at the right end of the box 10 up, down, left and right.
A piston rod guide hole 2504 is axially formed in the end cover 25; an E sealing groove 2503, a liquid collecting groove 2509 and an F sealing groove 2510 are sequentially arranged in the axial direction of the piston rod guide hole 2504 from left to right, an E sealing ring 26 and an F sealing ring 28 are respectively arranged in the E sealing groove 2503 and the F sealing groove 2510, the E sealing ring 26 and the F sealing ring 28 are hole YX-shaped sealing rings, and the opening direction of the E sealing ring 26 is towards the left to seal the water pressure in the box body 10; the opening direction of the F seal ring 28 is rightward for sealing the oil pressure in the oil cylinder 29; on the square peripheral plane of the right thrust surface 2515 in the middle of the end cover 25, the middle of each surface is provided with a drain hole 2507 communicated with the liquid collecting groove 2509, the axis of the drain hole 2507 is horizontal and vertical, so that after the end cover 25 is installed, one drain hole 2507 is always vertical downwards, and the drain hole 2507 is a kidney-shaped hole.
A liquid collecting tank 2509 for storing water leaking from the tank 10 through the E-packing 26 and oil leaking from the hydraulic cylinder 29 through the F-packing 28; in order to prevent the water in the tank body 10 from communicating with the oil in the hydraulic cylinder 29 after the liquid collecting tank 2509 is full, the end cover 25 is provided with the drain holes 2507, the device is provided with one drain hole 2507 on four square side surfaces of the end cover 25, namely after the end cover 25 is fixed to the tank body 10, an orifice of one drain hole 2507 drains liquid downwards, meanwhile, an upward hole can be used as an air inlet and outlet hole, the left hole and the right hole can drain liquid and can exhaust air, the liquid collecting tank 2509 is communicated with the atmosphere, the air pressure is kept balanced, the drain holes 2507 drain smoothly, and the two-way sealing of one end cover is realized.
As shown in fig. 5, the hydraulic pressure control system includes a water supply tank 61, a filter 62, a water pump 63, an unloading valve 64, a check valve 67, an overflow valve 68, and a stop valve 69, wherein an input end of the water pump 63 is connected to the water supply tank 61 through the filter 62, an output end of the water pump 63 is divided into two paths, one path of the output end of the water pump 63 is the unloading valve 64 and the water supply tank 61, the other path of the output end of the water pump 63 is the check valve 67, and an output end of the check valve 67 is respectively connected to a water pipe joint 8 at the left end of the tank 10, a control end (end a) of the unloading valve 64, a pressure gauge switch 66 and a pressure gauge 65; an overflow valve 68 is arranged on the right end face of the box body 10; an output end of the relief valve 68 is connected to the water supply tank 61; the box body 10 is further provided with a stop valve 69 under the bottom plate thereof, and after the test is finished, the stop valve is used for discharging accumulated water in the box body 10 to the water supply tank 61.
The working process of the hydraulic control system is as follows: passing the saline water in the water supply tank 61 through a filter 62, a water pump 63, a one-way valve 67, a water pipe joint 8 and a tank body 10; when the pressure in the box body 10 reaches the set value of the unloading valve 64, the outlet of the water pump 63 starts unloading work through the unloading valve 64, and the box body 10 maintains pressure through the one-way valve 67; when the pressure in the box body 10 is smaller than the closing value of the unloading valve 64, the unloading valve 64 is automatically closed, and the outlet of the water pump 63 continuously supplies water to the box body 10 through the one-way valve 67 and the water pipe joint 8.
In addition, the overflow valve 68 has a second function, and the first function and the unloading valve 64 are mutually backup and play a role of a safety valve, namely when the unloading valve 64 cannot unload, the overflow valve 68 automatically overflows, and vice versa, so that the safe operation of the system is ensured; the second is system simulation, when the overflow value set by the overflow valve 68 is smaller than the set value of the unloading valve 64, and the water pressure in the water tank 19 reaches the overflow value set by the overflow valve 68, the system will work in an overflow state, so that the pressure water in the tank can simulate the flow of natural groundwater in a pressure maintaining state.
Claims (9)
1. A box-type load-holding erosion test device comprises a water tank, a water pressure control system, a water pipe joint, an oil pressure control system and a hydraulic cylinder; the method is characterized in that: the water tank comprises a tank body and a tank cover; the box body is in a cuboid groove shape, the groove opening is upward, a flange is arranged on the groove opening, and a sealing gasket and a box cover are sequentially arranged on the flange; the flange is fixedly connected with the box cover; a water inlet hole of the box body is arranged at the middle part close to the upper part of the transverse wall plate at the left end of the box body, and a water pipe joint is arranged outside the water inlet hole of the box body; the water pipe joint is communicated with a water pressure control system; at least one pair of vertical concave grooves are symmetrically and fixedly connected to the longitudinal left side of the box body and the inner parts of the front wall plate and the rear wall plate respectively, and the notches are opposite; a tail plate which is not higher than the height of the inner wall of the box body is inserted between the corresponding notches of the concave grooves; the middle part of the transverse wall plate at the right end of the box body is provided with a mounting hole; the hydraulic cylinder is a single-piston-rod hydraulic cylinder, a piston rod penetrates through the mounting hole from the outside of the right end of the box body to enter the box body, and the hydraulic cylinder is fixed outside the transverse wall plate at the right end of the box body in a sealing manner by utilizing the fixing hole in the end cover; the oil pressure control system controls the movement and the pressure of a piston in the hydraulic cylinder; the left end of the piston rod is movably connected with a pressing plate; the bottom of the box body is also provided with box legs;
a window hole is formed in the middle of a bottom plate of the box body, a boss is arranged on the upper opening edge of the window hole, and a rubber sealing gasket is arranged on the boss;
the middle part of the box cover is also provided with an A mounting hole for mounting a second set of hydraulic cylinder; the second set of hydraulic cylinder has the same structure as the hydraulic cylinder; the box cover is also provided with a valve; the right end face of the box body is provided with an overflow valve, and the bottom face of the box body is provided with a stop valve; the output ends of the overflow valve and the stop valve are connected to the water supply tank;
the end cover of the hydraulic cylinder, a left positioning journal and a right positioning journal are respectively arranged at two ends of the end cover, the middle part of the end cover is step-shaped, the left side of the end cover is circular, the right side of the end cover is square, the side length of the end cover is less than or equal to that of an inscribed square of the left circular shape, so that a left thrust surface of the end cover is circular, a right thrust surface of the end cover is square, a sealing groove B and a sealing groove C are correspondingly arranged on the left thrust surface and the right thrust surface, and the inner diameters of the sealing groove B and the sealing groove C are respectively the same as the outer diameters of the left positioning journal and the right positioning journal; the sealing ring B and the sealing ring C are both O-shaped rings; a piston rod guide hole is axially formed in the end cover; an E sealing groove, a liquid collecting groove and an F sealing groove are sequentially arranged in the guide hole from left to right in the axial direction; an E sealing ring and an F sealing ring are respectively arranged in the E sealing groove and the F sealing groove, the E sealing ring and the F sealing ring are YX-shaped sealing rings for holes, the opening direction of the E sealing ring is towards the left, and the opening direction of the F sealing ring is towards the right; on the square peripheral plane in the middle of the end cover, the middle of each plane is provided with a drain hole communicated with the liquid collecting groove, and the axis of each drain hole is horizontal and vertical;
the water pressure control system comprises a water supply tank, a filter, a water pump, an unloading valve, a one-way valve, an overflow valve and a stop valve, wherein the input end of the water pump is connected with the water supply tank through the filter; the output end of the water pump is divided into two paths, one path of the output end of the water pump is the unloading valve and the water supply tank, the other path of the output end of the water pump is the one-way valve, and the output end of the one-way valve is respectively connected to a water pipe joint at the left end of the box body, the control end (A end) of the unloading valve and a pressure gauge switch to the pressure gauge.
2. The box-type load-bearing etching test device according to claim 1, wherein: the water tank is made of metal.
3. The box-type load-bearing etching test device according to claim 1, wherein: the surface of the water tank is provided with a protective layer.
4. The box-type load-bearing etching test device according to claim 1, wherein: the water pipe joint is of a cylindrical two-end type, one end connected with the box body is a flange, and the other end of the water pipe joint is provided with pipe threads.
5. The box-type load-bearing etching test device according to claim 1, wherein: the tail plate is inserted into the concave groove, the tail plate and the concave groove are in clearance fit, and the clearance is not less than 0.5 mm.
6. The box-type load-bearing etching test device according to claim 1, wherein: the left end of the piston rod is provided with a hinge hole.
7. The box-type load-bearing etching test device according to claim 1, wherein: the piston rod is movably connected with the pressure plate in a hinge connection mode.
8. The box-type load-bearing etching test device according to claim 1, wherein: the window hole is square in shape.
9. The box-type load-bearing etching test device according to claim 1, wherein: the upper plane of the boss is provided with a threaded hole; the threaded hole is a blind hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211660.9A CN114577649A (en) | 2018-11-19 | 2018-11-19 | Box-type load-holding etching test device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210211660.9A CN114577649A (en) | 2018-11-19 | 2018-11-19 | Box-type load-holding etching test device |
| CN201811374584.3A CN109342243B (en) | 2018-11-19 | 2018-11-19 | Box-type load-holding etching test device |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811374584.3A Division CN109342243B (en) | 2018-11-19 | 2018-11-19 | Box-type load-holding etching test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114577649A true CN114577649A (en) | 2022-06-03 |
Family
ID=65315746
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210211660.9A Pending CN114577649A (en) | 2018-11-19 | 2018-11-19 | Box-type load-holding etching test device |
| CN201811374584.3A Active CN109342243B (en) | 2018-11-19 | 2018-11-19 | Box-type load-holding etching test device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811374584.3A Active CN109342243B (en) | 2018-11-19 | 2018-11-19 | Box-type load-holding etching test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN114577649A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484732A (en) * | 1990-07-27 | 1992-03-18 | Tetsuo Ezaki | Simultaneous shearing and permeability testing apparatus for concrete, rock or the like |
| CN103743587A (en) * | 2014-01-03 | 2014-04-23 | 中交四航工程研究院有限公司 | Marine environment and dynamic load coupling test equipment system |
| CN105588751A (en) * | 2016-03-07 | 2016-05-18 | 长沙理工大学 | Reinforced concrete bonding section drawing fatigue and corrosion coupling test device and test method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101988492A (en) * | 2009-08-04 | 2011-03-23 | 江继辉 | Pressure regulating and controlling device of self-operated high-pressure water system and method thereof |
| CN101672261A (en) * | 2009-09-27 | 2010-03-17 | 华中科技大学 | Hydraulic pressure power source used for underwater operation tool |
| CN202251966U (en) * | 2011-09-28 | 2012-05-30 | 上海福伊特水电设备有限公司 | Oil-water separation sealing structure for barrel valve servomotor of water turbine |
| US9121803B2 (en) * | 2012-03-15 | 2015-09-01 | Western Michigan University Research Foundation | Thermal distortion tester |
| CN106840645B (en) * | 2017-04-11 | 2023-06-02 | 兰州理工大学温州泵阀工程研究院 | Static pressure life test system for valve |
| CN107101876B (en) * | 2017-06-21 | 2019-09-24 | 河海大学 | Concrete slab corrosion deterioration test devices and methods therefor under complexing action |
-
2018
- 2018-11-19 CN CN202210211660.9A patent/CN114577649A/en active Pending
- 2018-11-19 CN CN201811374584.3A patent/CN109342243B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0484732A (en) * | 1990-07-27 | 1992-03-18 | Tetsuo Ezaki | Simultaneous shearing and permeability testing apparatus for concrete, rock or the like |
| CN103743587A (en) * | 2014-01-03 | 2014-04-23 | 中交四航工程研究院有限公司 | Marine environment and dynamic load coupling test equipment system |
| CN105588751A (en) * | 2016-03-07 | 2016-05-18 | 长沙理工大学 | Reinforced concrete bonding section drawing fatigue and corrosion coupling test device and test method |
Non-Patent Citations (1)
| Title |
|---|
| 喻骁 等: "混凝土抗硫酸盐浸蚀试验方法分析", 《铁道建筑技术》, 31 December 2013 (2013-12-31), pages 93 - 96 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109342243A (en) | 2019-02-15 |
| CN109342243B (en) | 2022-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106153442A (en) | Sealing device for the test of rock fracture multi-scenarios method effect down cut | |
| CN109507097B (en) | Load-holding erosion test device for concrete bias column | |
| CN109342243B (en) | Box-type load-holding etching test device | |
| CN108361025B (en) | Pressure testing device for pumping well pipe column | |
| CN109406293B (en) | Peepable concrete test device | |
| CN109632197B (en) | Valve sealing performance detection device | |
| CN204028067U (en) | A kind of soil body that pollutes is sheared infiltration experiment device | |
| CN109374500A (en) | A kind of double load etch test devices | |
| CN104155428A (en) | Polluted soil shear penetration test device | |
| CN109507093A (en) | A kind of sealing pressure infiltration experiment device | |
| CN107542457B (en) | Experimental device and method for simulating influence of geological structure on stratum pressure in drainage process | |
| CN109374502B (en) | Water head difference penetration test device under load-holding condition | |
| CN109459316A (en) | A kind of experimental rig based on hydraulic load | |
| CN109507088A (en) | A kind of combined type experimental rig | |
| CN211819283U (en) | Direct and reverse circulation sand washing conversion device | |
| CN109443942A (en) | A kind of experimental rig based on bellows sealing | |
| CN109507092A (en) | A kind of sealed integrated experiment device | |
| CN206504855U (en) | A kind of interior jet-preventing tool test device | |
| CN109374505A (en) | A kind of experimental rig of concrete component | |
| CN2844439Y (en) | Pressure tester of operation well | |
| CN109490167A (en) | A kind of pressure permeation experimental rig | |
| CN211425773U (en) | Oil cylinder barrel leakage detection equipment | |
| CN214007170U (en) | Slip casting system for large-diameter concrete pipe penetrating through continuously-wound glass steel pipe | |
| CN109507087A (en) | A kind of reinforced concrete member experimental rig | |
| CN215563153U (en) | Large-pipe-diameter pressure flow socket pipe water leakage treatment device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |