A high-pressure jet penetration test bench

Abstract

The invention discloses a high-pressure jet penetration test bench, comprising a loading mechanism and a jet mechanism, wherein the loading mechanism comprises a liquid suction part, a liquid storage tank and a power part, wherein a liquid inlet and a liquid outlet are respectively arranged on the liquid suction cavity of the liquid suction part, the liquid suction cavity is connected with the liquid storage tank via the liquid inlet, the power part is connected with the liquid suction part to drive the liquid suction cavity to suck liquid from the liquid storage tank, and the liquid suction cavity alternately inhales or discharges liquid; the jet mechanism comprises a jet frame, a jet plate and a jetted part, the jet plate is mounted on the jet frame, a jet hole is opened on the jet plate, and the jet hole is connected with the liquid suction cavity via a conduit and the liquid outlet, and the invention arranges the jetted part movably under the jet plate by arranging a moving device, thereby studying the high-pressure jet penetration test in a moving state, effectively solving the technical problem that the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state, and achieving the beneficial effects of wide research scope and strong practicality.

Description

Technical Field

[0001] The invention relates to the field of jet technology, in particular to a high-pressure jet penetration test bench. Background Art

[0002] Jet refers to the phenomenon of working medium flowing from a nozzle, which is a very common flow pattern in engineering. High-pressure liquid jet uses liquid as a carrier, and converts mechanical energy into pressure energy through a specific nozzle or pressurizing equipment through the principle of liquid supercharging, and forms a jet with high energy through the nozzle hole, converting pressure energy into kinetic energy. As a new technology, high-pressure liquid jet technology has developed rapidly in recent decades and is widely used in coal mining, aerospace, machinery manufacturing, national defense, transportation, construction and medical fields. It is mainly used for liquid jet processing, crushing, cleaning and cutting.

[0003] In some fields, the application and promotion of high-pressure liquid jet technology are greatly limited due to the large investment, immature technology and few product types. Deepening the understanding and research of jet theory and vigorously developing advanced jet technology will help to develop high-end high-pressure jet products, which will produce huge economic and social benefits.

[0004] However, in the process of implementing the technical solutions in the embodiments of the present application, the inventors of the present application found that the above-mentioned prior art has at least the following technical problems: the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state. Summary of the invention

[0005] The embodiment of the present application solves the technical problem that the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state by providing a high-pressure jet penetration test bench.

[0006] In order to solve the above technical problems, the embodiment of the present application provides a high-pressure jet penetration test bench, which includes:

[0007] The loading mechanism comprises a liquid suction part, a liquid storage tank and a power part, wherein the liquid suction part comprises a liquid suction cavity, wherein the liquid suction cavity is provided with a liquid inlet for liquid inlet and a liquid outlet for liquid outlet, and the liquid suction cavity is connected with the liquid storage tank through the liquid inlet, and the power part is connected with the liquid suction part to drive the liquid suction cavity to suck liquid from the liquid storage tank, and the liquid suction cavity alternately inlets or outlets liquid;

[0008] The jet mechanism comprises a jet frame, a jet plate and a jetted component. The jet plate is mounted on the jet frame. A jet hole is provided on the jet plate. The jet hole is connected to the liquid suction cavity through a conduit and the liquid outlet. The jetted component is movably arranged under the jet hole through a moving device.

[0009] Furthermore, the power unit includes:

[0010] A cylinder, comprising a cylinder body, a cylinder piston and a piston rod, wherein the cylinder piston is slidably arranged in the cylinder body along the axial direction, and the cylinder piston airtightly divides the cylinder body into a first cavity and a second cavity along the axial direction; the piston rod is located in the second cavity, and one end of the piston rod is coaxially connected to the cylinder piston, and the other end airtightly passes through the cylinder body;

[0011] Directional valve;

[0012] An air source is connected to the first cavity via the reversing valve and the first connecting pipe, and the air source is connected to the second cavity via the reversing valve and the second connecting pipe, and the first cavity and the second cavity are alternately inlet with air.

[0013] Furthermore, the power unit also includes:

[0014] A throttle valve is arranged between the gas source and the reversing valve.

[0015] Further, the liquid suction part comprises:

[0016] A plunger cylinder is arranged along the axial direction, and the left end of the plunger cylinder is fixedly connected to the cylinder;

[0017] The plunger cylinder piston is slidably disposed in the plunger cylinder along the axial direction, and the left end of the plunger cylinder piston is coaxially fixedly connected to the piston rod, and the right end of the plunger cylinder piston separates the plunger cylinder from the liquid suction cavity;

[0018] The liquid outlet is arranged at the upper part of the outer peripheral wall of the plunger cylinder near the right end, and the liquid inlet is arranged at the lower part of the outer peripheral wall of the plunger cylinder, and the liquid inlet is located on the movement trajectory of the plunger cylinder piston, so that when liquid is discharged from the liquid outlet, the plunger cylinder piston covers and blocks the liquid inlet, thereby realizing alternating liquid inflow or outflow from the liquid suction chamber.

[0019] Furthermore, the plunger cylinder includes a tube body, the right end of which is sealed by an end cover, the end cover has an inner concave cavity, the liquid outlet is opened on the peripheral surface of the end cover, and the liquid outlet is connected to the liquid suction cavity through the inner concave cavity.

[0020] Furthermore, a guide ring is provided between the plunger cylinder piston and the plunger cylinder, and the guide ring is coaxially sleeved on the plunger cylinder piston.

[0021] Furthermore, a piston sealing ring is provided between the plunger cylinder piston and the plunger cylinder, and the distance between the guide ring or piston sealing ring closest to the right end of the plunger cylinder piston and the right end face of the plunger cylinder piston is L1. When the plunger cylinder piston is located at the leftmost end in the plunger cylinder, the axial length of the liquid suction chamber is the largest, which is L2, and L1>L2.

[0022] Furthermore, the plunger cylinder piston is coaxially fixedly connected to the piston rod through a cylinder shaft, a tenon is provided at the left end of the cylinder shaft, the tenon is coaxially inserted into the right end of the piston rod, the right end of the cylinder shaft extends into the plunger cylinder and is coaxially fixedly connected to the left end of the plunger cylinder piston through a connecting piece, and the cylinder shaft can move along the axial direction;

[0023] The connecting piece includes a fixing ring, a circumferential groove is provided on the right end of the cylinder shaft, the fixing ring is fixedly clamped in the circumferential groove, the right end of the cylinder shaft is inserted into the plunger cylinder piston, and the fixing ring is fixed to the end face of the plunger cylinder piston by an axial pin.

[0024] Furthermore, the jet rack includes a support plate and a bottom plate which are arranged in parallel up and down, and the support plate is fixedly connected to the bottom plate through a pillar that supports the support plate;

[0025] The jet plate is detachably fixed on the lower surface of the support plate, and a connecting hole which is in communication with the jet hole is provided on the support plate, and the connecting hole is in communication with the conduit;

[0026] The conduit is provided with a one-way valve, and the one-way valve only allows the liquid to flow from the liquid suction cavity to the ejection hole;

[0027] The jet hole includes a first hole and a second hole coaxially arranged up and down, the inner end of the first hole is connected to the inner end of the second hole, the outer end of the first hole extends to the upper surface of the jet plate and is connected to the connecting hole, the outer end of the second hole extends to the lower surface of the jet plate and is opposite to the jetted member, and the aperture of the first hole is larger than the aperture of the second hole.

[0028] Furthermore, the mobile device comprises:

[0029] Support frame;

[0030] A slide rail, arranged along the axial direction;

[0031] A slider is slidably arranged on the slide rail, and the slider has a plane for placing the jetted component; a through hole is arranged in the slider and passes through along the axial direction, and an internal thread is arranged in the through hole;

[0032] A lead screw is arranged in correspondence with and parallel to the slide rail, passes through the through hole and meshes with the internal thread, both ends of the lead screw are rotatably arranged on the support frame, and one end of the lead screw passes through the support frame and is connected to a motor.

[0033] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0034] (1) In the embodiment of the present application, a loading mechanism is provided to load liquid, and a jet mechanism is provided to generate a jet. The loading mechanism includes a liquid suction part, a liquid storage tank and a power part. The jet mechanism includes a jet frame, a jet plate and a jetted part. The liquid suction part is connected to the jet plate through a conduit; the power part drives the liquid suction part to suck liquid from the liquid storage tank, and the liquid in the liquid storage tank enters the liquid suction cavity of the liquid suction part through the liquid inlet; the liquid in the liquid suction cavity flows into the jet hole through the liquid outlet and the conduit to form a jet. The jetted part is movably arranged under the jet plate through a moving device, so that the high-pressure jet penetration test in a moving state can be studied, which effectively solves the technical problem that the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state, and achieves the beneficial effects of wide research scope and strong practicality.

[0035] (2) The throttle valve described in the embodiment of the present application can control the flow rate of the gas outlet from the gas source, thereby enhancing the reliability of the loading mechanism.

[0036] (3) The guide ring described in the embodiment of the present application can correct the concentricity between the plunger cylinder piston and the plunger cylinder to avoid eccentricity of the plunger cylinder piston and affect the sealing effect of the liquid suction chamber.

[0037] (4) In the embodiment of the present application, the distance between the guide ring at the rightmost end and the right end surface of the plunger cylinder piston is L1. When the plunger cylinder piston is located at the leftmost end in the plunger cylinder, that is, when the plunger cylinder piston is located at the leftmost end of its axial stroke, the maximum length of the liquid suction cavity in the tube body is L2. L1 should be strictly greater than L2 to avoid interference between the guide ring and the piston sealing ring and the liquid inlet when the plunger cylinder piston runs to the bottom of the plunger cylinder, thereby affecting the sealing and guiding effects.

[0038] (5) The catheter described in the embodiment of the present application is provided with a one-way valve, which only allows liquid to flow from the suction chamber to the ejection hole, thereby preventing the liquid from flowing back.

[0039] (6) The jet hole described in the embodiment of the present application includes a first hole and a second hole coaxially arranged in an upper and lower direction. The jet plate can be provided in multiple pieces, wherein the aperture of the first hole of each jet plate is 2 mm, and the aperture of the second hole is 0.5 mm, 0.2 mm, 0.1 mm, and 0.05 mm, respectively, so that the jet velocity can be changed by using the jet plates with different apertures.

[0040] (7) The jet-receiving part described in the embodiment of the present application is movably arranged on the bottom plate through a moving device, and the moving device is a ball screw assembly. The motor drives the screw to rotate, and the screw drives the slider to slide along the axial direction on the slide rail. The jet-receiving part is placed on the slider and moves synchronously with the slider. When the jet-receiving part is fixed, the high-pressure jet penetration test in a fixed state can be studied. When the jet-receiving part moves with the ball screw assembly, the high-pressure jet penetration test in a moving state can be studied.

[0041] (8) The left end surface area of ​​the cylinder piston in the embodiment of the present application is A1, and the right end surface area of ​​the plunger cylinder piston is A2. By changing the piston area and adjusting the area ratio A1:A2 between the two, the liquid supply pressure can be changed to meet specific needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic diagram of the overall structure of a high-pressure jet penetration test bench provided in one embodiment of the present application;

[0043] Figure 2 It is a structural schematic diagram of a loading mechanism of a high-pressure jet penetration test bench provided in one embodiment of the present application;

[0044] Figure 3 It is a structural schematic diagram of a jet mechanism of a high-pressure jet penetration test bench provided in one embodiment of the present application;

[0045] Figure 4 It is a schematic diagram of the matching structure of a cylinder shaft and a plunger cylinder piston of a high-pressure jet penetration test bench provided in one embodiment of the present application;

[0046] Figure 5 It is a structural schematic diagram of the cooperation between a support plate and a jet plate of a high-pressure jet penetration test bench provided in one embodiment of the present application. DETAILED DESCRIPTION

[0047] The embodiment of the present application solves the technical problem that the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state by providing a high-pressure jet penetration test bench.

[0048] In order to solve the above technical problems, the overall idea of ​​the technical solution provided by this application is as follows:

[0049] The loading mechanism is provided to load liquid and the jet mechanism is provided to generate a jet, the loading mechanism includes a liquid suction part, a liquid storage tank and a power part, the jet mechanism includes a jet frame, a jet plate and a jetted part, the liquid suction part is connected with the jet plate through a conduit; the power part drives the liquid suction part to suck liquid from the liquid storage tank, the liquid in the liquid storage tank enters the liquid suction cavity of the liquid suction part through the liquid inlet; the liquid in the liquid suction cavity flows into the jet hole through the liquid outlet and the conduit to form a jet;

[0050] By setting up a moving device, the jetted component can be movably set under the jet plate, so that the high-pressure jet penetration test in a moving state can be studied, which effectively solves the technical problem that the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state, and achieves the beneficial effects of wide research scope and strong practicality.

[0051] The technical solution of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiments of the present application and the specific features in the embodiments are detailed descriptions of the technical solution of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.

[0052] Definition In the embodiment of the present application, the axial direction is the central axis direction of the cylinder body (cylinder piston 22 or piston rod 38) or a direction parallel to the central axis, and along the axial direction, the end where the first cavity a is located is the left end, and the end where the second cavity b is located is the right end, such as Figure 1 shown.

[0053] like Figures 1 to 3 As shown, the test bench includes a loading mechanism and a fluidic mechanism, wherein:

[0054] The loading mechanism includes a liquid suction part, a liquid storage tank 11 and a power part. The liquid suction part includes a liquid suction chamber 24. The liquid suction chamber 24 is respectively provided with a liquid inlet 27 for liquid intake and a liquid outlet 25 for liquid discharge, and the liquid suction chamber 24 is connected with the liquid storage tank 11 through the liquid inlet 27. The power part is connected to the liquid suction part to drive the liquid suction chamber 24 to absorb liquid from the liquid storage tank 11, and the liquid suction chamber 24 alternately takes in or discharges liquid. In one embodiment of the present application, the liquid is water.

[0055] The jet mechanism includes a jet frame, a jet plate 19 and an ejected member 33, wherein the jet plate 19 is mounted on the jet frame, and a jet hole 37 is opened on the jet plate 19, wherein the jet hole 37 is connected to the liquid suction chamber 24 via a conduit 30 and the liquid outlet 25, and the ejected member 33 is movably arranged under the jet hole 37 by a moving device.

[0056] In summary, the embodiment of the present application loads liquid by setting a loading mechanism, and generates a jet by setting a jet mechanism, the loading mechanism includes a liquid suction part, a liquid storage tank 11 and a power part, the jet mechanism includes a jet frame, a jet plate 19 and a jetted part 33, the liquid suction part is connected to the jet plate 19 through a conduit 30; the power part drives the liquid suction part to suck liquid from the liquid storage tank 11, and the liquid in the liquid storage tank 11 enters the liquid suction cavity 24 of the liquid suction part through the liquid inlet 27; the liquid in the liquid suction cavity 24 flows into the jet hole 37 through the liquid outlet 25 and the conduit 30 to form a jet, and the jetted part 33 is movably arranged under the jet plate 19 through a moving device, so that the high-pressure jet penetration test in a moving state can be studied, which effectively solves the technical problem that the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state, and achieves the beneficial effects of wide research scope and strong practicality.

[0057] Further, such as Figure 1 , 2 As shown, the power unit includes a cylinder 1, a reversing valve 14 and an air source 16, wherein:

[0058] The cylinder 1 comprises a cylinder body, a cylinder piston 22 and a piston rod 38. The cylinder piston 22 is slidably arranged in the cylinder body along the axial direction, and the cylinder piston 22 airtightly divides the cylinder body into a first cavity a and a second cavity b along the axial direction; the piston rod 38 is located in the second cavity b, and one end of the piston rod 38 is coaxially connected to the cylinder piston 22, and the other end airtightly passes through the cylinder body;

[0059] The gas source 16 is connected to the first cavity a through the reversing valve 14 and the first connecting pipe A, and the gas source 16 is connected to the second cavity b through the reversing valve 14 and the second connecting pipe B, and the first cavity a and the second cavity b are alternately inlet. The gas source 16 is any one of a portable high-pressure air bottle, a carbon dioxide bottle, an argon bottle or a nitrogen bottle, and the gas source 16 is a high-pressure gas source, and the gas pressure of the gas source is 7 bar.

[0060] Specifically, the air source 16 is connected to the first connecting pipe A and the second connecting pipe B respectively through the reversing valve 15. The reversing valve 15 is used to change the air intake direction, thereby realizing alternate air intake into the first cavity a and the second cavity b to change the movement direction of the piston rod 38 of the cylinder 1: when the air source 16 is connected to the first cavity a, the air pressure pushes the cylinder piston 22 and the piston rod 38 to move toward the second cavity b (right end); when the air source 16 is connected to the second cavity b, the air pressure pushes the cylinder piston 22 and the piston rod 38 to move toward the first cavity a (left end), thereby realizing the reciprocating movement of the piston rod 38 along the axial direction.

[0061] Furthermore, the power unit also includes a throttle valve 15 , and the throttle valve 15 is arranged on a third connecting pipe 43 connecting the gas source 16 and the reversing valve 14 .

[0062] Specifically, the throttle valve 15 can control the flow rate of the gas outlet from the gas source 16, thereby enhancing the reliability of the loading mechanism.

[0063] Furthermore, the liquid suction part includes a plunger cylinder 6 and a plunger cylinder piston 5, wherein:

[0064] The plunger cylinder 6 is arranged along the axial direction, and the left end of the plunger cylinder 6 is coaxially fixedly connected to the cylinder 1;

[0065] The plunger cylinder piston 5 is coaxially arranged in the plunger cylinder 6 so as to slide leftward and rightward along the axial direction, and the left end of the plunger cylinder piston 5 is coaxially fixedly connected to the piston rod 38, and the right end of the plunger cylinder piston 5 surrounds the plunger cylinder 6 to separate the liquid suction chamber 24;

[0066] The liquid outlet 25 is arranged at the upper part of the right end of the outer peripheral wall of the plunger cylinder 6, and the liquid inlet 27 is arranged at the lower part of the outer peripheral wall of the plunger cylinder 6, and the liquid inlet 27 is located on the movement trajectory of the plunger cylinder piston 5, so that when the liquid outlet 25 discharges liquid, the plunger cylinder piston 5 covers and blocks the liquid inlet 27, thereby realizing the alternating liquid inflow or outflow of the liquid suction chamber 24.

[0067] Specifically, the plunger cylinder piston 5 moves axially synchronously driven by the piston rod 38. When the plunger cylinder piston 5 moves to the left along with the piston rod 38, negative pressure is generated in the liquid suction chamber 24, and the liquid suction chamber 24 absorbs water. When the plunger cylinder piston 5 moves to the right along with the piston rod 38, the outer peripheral surface of the plunger cylinder piston 5 covers the liquid inlet 27 and squeezes the water in the liquid suction chamber 24 to flow to the liquid outlet 25.

[0068] Driven by the piston rod 38 , the path along which the plunger cylinder piston 5 moves left and right in the plunger cylinder 6 along the axial direction is the axial stroke of the plunger cylinder piston 5 .

[0069] like Figure 1 As shown, the left end surface area of ​​the cylinder piston 22 is A1, and the right end surface area of ​​the plunger cylinder piston 5 is A2. By changing A1 or A2 and adjusting the area ratio A1:A2 between the two, the liquid supply pressure can be changed.

[0070] Furthermore, the plunger cylinder 6 includes a tube body, the right end of which is sealed by an end cover 8, the end cover 8 has an inner concave cavity 29, the liquid outlet 25 is opened on the peripheral surface of the end cover 8, and the liquid outlet 25 is connected to the liquid suction cavity 24 through the inner concave cavity 29.

[0071] Specifically, the end cover 8 is a first flange, which is fixed to the right end of the tube body by a first bolt 28, and a first sealing O-ring 10 is provided between the first flange and the tube body, and the tube body is a stainless steel tube.

[0072] In addition, the diameter of the inner concave cavity 29 is smaller than that of the plunger cylinder piston 5, and the plunger cylinder piston 5 cannot enter the inner concave cavity 29. The inner concave cavity 29 can store liquid and thus stabilize pressure.

[0073] Furthermore, the liquid storage tank 11 is located below the liquid suction chamber 24 , and the liquid storage tank 11 and the liquid suction chamber 24 are connected in sequence via a liquid inlet channel and the liquid inlet port 27 .

[0074] Furthermore, two guide rings 12 are arranged between the plunger cylinder piston 5 and the plunger cylinder 6 , and the guide rings 12 are coaxially sleeved on the plunger cylinder piston 5 .

[0075] Specifically, the guide ring 12 is a circular ring coaxially sleeved on the plunger cylinder piston 5, which plays a role in correcting the concentricity between the plunger cylinder piston 5 and the plunger cylinder 6 to prevent the plunger cylinder piston 5 from being eccentric and affecting the sealing effect of the liquid suction chamber.

[0076] Furthermore, a piston seal ring 4 is provided between the plunger cylinder piston 5 and the plunger cylinder 6, and the piston seal ring 4 is located between the two guide rings 12. In this embodiment, the piston seal ring 4 is a Gray ring.

[0077] Furthermore, the distance between the rightmost guide ring 12 and the right end face of the plunger cylinder piston 5 is L1. When the plunger cylinder piston 5 is located at the leftmost end in the plunger cylinder 6, that is, when the plunger cylinder piston 5 is located at the leftmost end of its axial stroke, the maximum length of the liquid suction cavity 24 in the tube body is L2. L1 should be strictly greater than L2 to avoid interference between the guide ring 12 and the piston sealing ring 4 and the liquid inlet 27 when the plunger cylinder piston 5 runs to the bottom of the plunger cylinder, thereby affecting the sealing and guiding effects.

[0078] Furthermore, the left end of the plunger cylinder 6 is coaxially fixedly connected to the right end of the cylinder body through the second flange 2 and the second bolt 23, and the right end of the plunger cylinder 6 is supported and fixed by the support bolt 9, so that the plunger cylinder 6 remains horizontal. In this embodiment, the support bolt 9 is fixedly connected to the outer peripheral surface of the first flange.

[0079] Furthermore, the plunger cylinder piston 5 is coaxially fixedly connected to the piston rod 38 through the cylinder shaft 3, the left end of the cylinder shaft 3 is provided with a tenon, the tenon is coaxially inserted into the right end of the piston rod 38, the right end of the cylinder shaft 3 extends into the plunger cylinder 6 and is coaxially fixedly connected to the left end of the plunger cylinder piston 5 through a connecting piece, and the cylinder shaft 3 can move along the axial direction;

[0080] The connecting piece includes a fixing ring 13, a circumferential groove is provided on the right end of the cylinder shaft 3, the fixing ring 13 is fixedly clamped in the circumferential groove, the right end of the cylinder shaft 3 is inserted into the plunger cylinder piston 5, and the fixing ring 13 is fixed to the end face of the plunger cylinder piston 5 by an axial pin 26.

[0081] Specifically, for ease of installation, the fixing ring 13 is composed of two semicircular rings cut in half by wire cutting, and the connecting piece fixedly connects the cylinder shaft 3 with the plunger cylinder piston 5, so that the cylinder 1 drives the plunger cylinder piston 5 to move left and right along the axial direction.

[0082] Furthermore, the jet rack includes a support plate 17 and a bottom plate 22 which are arranged in parallel up and down, and the support plate 17 is fixedly connected to the bottom plate 22 via a support column 20 which supports the support plate 17;

[0083] The jet plate 19 is detachably fixed on the lower surface of the support plate 17, and a connecting hole 31 is formed on the support plate 17, which is aligned with and penetrates the jet hole 37, and the connecting hole 31 is connected to the conduit 30;

[0084] The conduit 30 is provided with a one-way valve 7 , and the one-way valve 7 only allows the liquid to flow from the liquid suction chamber 24 to the ejection hole 37 .

[0085] Specifically, the jet plate 19 is fixed to the support plate 17 by bolts 32. When the plunger cylinder piston 5 moves to the right along with the piston rod 38, the plunger cylinder piston 5 squeezes the water in the suction chamber 24 to flow to the jet hole 37 through the liquid outlet 25, the conduit 30, the one-way valve 7, and the connecting hole 31 in sequence, forming a jet, and the jet strikes the jetted member 33 downward.

[0086] Furthermore, a second sealing O-ring 18 is provided between the jet hole 37 and the connecting hole 31 to prevent liquid from leaking between the jet hole 37 and the connecting hole 31 , and the second O-ring 18 is clamped between the jet plate 19 and the support plate 17 .

[0087] Furthermore, the jet hole 37 includes a first hole 39 and a second hole 40 coaxially arranged in an upper and lower direction, the inner end of the first hole 39 is connected to the inner end of the second hole 40, the outer end of the first hole 39 extends to the upper surface of the jet plate 19 and is connected to the connecting hole 31, the outer end of the second hole 40 extends to the lower surface of the jet plate 19 and is opposite to the jetted member 33, and the aperture of the first hole 39 is larger than the aperture of the second hole 40.

[0088] Specifically, a plurality of jet plates 19 may be provided, wherein the aperture of the first hole 39 of each jet plate 19 is 2 mm, and the apertures of the second holes 40 are 0.5 mm, 0.2 mm, 0.1 mm, and 0.05 mm, respectively, so as to change the jet velocity by using the jet plates 19 with different apertures.

[0089] Further, the jetted member 33 is movably arranged on the bottom plate 22 by a moving device, and the moving device is a ball screw assembly, and the ball screw assembly includes:

[0090] Support frame 34;

[0091] A slide rail 41 is arranged along the axial direction;

[0092] A slider 36 is slidably disposed on the slide rail 41, and the slider 36 has a platform 42 for placing the jetted component 33; a through hole is provided in the slider 36 and penetrates along the axial direction, and an internal thread is provided in the through hole;

[0093] The lead screw 35 corresponds to and is parallel to the slide rail 41 above and below. The lead screw 35 passes through the through hole and engages with the internal thread. Both ends of the lead screw 35 are rotatably arranged on the support frame 34, and one end of the lead screw 35 passes through the support frame 34 and is connected to the motor 21.

[0094] Specifically, the motor 21 drives the lead screw 35 to rotate, and the lead screw 35 drives the slider 36 to slide along the axial direction on the slide rail 41. The jetted component 33 is placed on the slider 36 and moves synchronously with the slider 36. When the jetted component 33 is fixed, the high-pressure jet penetration test in a fixed state can be studied, and when the jetted component 33 moves with the ball screw assembly, the high-pressure jet penetration test in a moving state can be studied.

[0095] Furthermore, the upper surface of the platform 42 is horizontal, and the lower surface is fixed on the upper surface of the slider 36 .

[0096] The method of using a high-pressure jet penetration test bench described in the embodiment of the present application is as follows:

[0097] Initial state, such as Figure 1 As shown, the plunger cylinder piston 5 is located at the leftmost end of the plunger cylinder 6, and the liquid inlet 27 is in a fully open state. The throttle valve 15 is opened, and the high-pressure gas in the gas source 16 enters the rodless chamber (first chamber a) of the cylinder 1 through the throttle valve 15, the reversing valve 14, and the first connecting pipe A, and the low-pressure gas in the liver chamber (second chamber b) of the cylinder 1 is discharged into the air, and the cylinder shaft 3 drives the plunger cylinder piston 5 to move rightward, and the liquid inlet 27 is gradually closed. The high-pressure water in the liquid suction chamber 24 passes through the liquid outlet 25 on the end cover 8, the one-way valve 7, and the connecting hole 31 on the support plate 17 into the jet hole 37 in the jet plate 19 to realize high-pressure liquid jet.

[0098] The moving device can be turned on to drive the ejected component 33 to move along the axial direction to complete the high-pressure jet penetration test in the moving state; the horizontal moving speed of the ejected component 33 can be changed by adjusting the rotation speed of the motor 21, and the jet speed can be changed by replacing the jet plate 19 with jet holes 37 of different apertures, thereby completing high-pressure jet penetration tests with different requirements and meeting various experimental needs.

[0099] Ready state, such as Figure 2 As shown, the plunger cylinder piston 5 is located at the rightmost side of the plunger cylinder 6, and the liquid inlet 27 is in a completely closed state. The throttle valve 15 is opened, and the high-pressure gas in the gas source 16 enters the rod chamber (second chamber b) of the cylinder 1 through the throttle valve 15, the reversing valve 14, and the second connecting pipe B. The cylinder shaft 3 drives the plunger cylinder piston 5 to move to the left, and the liquid inlet 27 is gradually opened. At this time, the liquid suction chamber 24 is almost vacuum, and the liquid in the liquid storage tank 11 is pressed into the liquid suction chamber 24 by atmospheric pressure, ready for the next experiment.

[0100] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:

[0101] (1) In the embodiment of the present application, a loading mechanism is provided to load liquid, and a jet mechanism is provided to generate a jet. The loading mechanism includes a liquid suction part, a liquid storage tank 11 and a power part. The jet mechanism includes a jet frame, a jet plate 19 and a jetted part 33. The liquid suction part is connected to the jet plate 19 through a conduit 30. The power part drives the liquid suction part to suck liquid from the liquid storage tank 11. The liquid in the liquid storage tank 11 enters the liquid suction cavity 24 of the liquid suction part through the liquid inlet 27. The liquid in the liquid suction cavity 24 flows into the jet hole 37 through the liquid outlet 25, the conduit 30, the one-way valve 7 and the connecting hole 31 to form a jet. The jetted part 33 is movably arranged under the jet plate 19 through a moving device, so that the high-pressure jet penetration test in a moving state can be studied, which effectively solves the technical problem that the jet test bench in the prior art cannot study the high-pressure jet penetration test in a moving state, and achieves the beneficial effects of wide research scope and strong practicality.

[0102] (2) The throttle valve 15 described in the embodiment of the present application can control the flow rate of the gas outlet of the gas source 16, thereby enhancing the reliability of the loading mechanism.

[0103] (3) The guide ring 4 described in the embodiment of the present application can correct the concentricity between the plunger cylinder piston 5 and the plunger cylinder 6 to avoid eccentricity of the plunger cylinder piston 5 and affect the sealing effect of the liquid suction chamber.

[0104] (4) In the embodiment of the present application, the distance between the rightmost guide ring 4 and the right end surface of the plunger cylinder piston 5 is L1. When the plunger cylinder piston 5 is located at the leftmost end in the plunger cylinder, that is, when the plunger cylinder piston 5 is located at the leftmost end of its axial stroke, the maximum length of the liquid suction cavity 24 in the tube body is L2. L1 should be strictly greater than L2 to avoid interference between the guide ring 4 and the piston seal 12 and the liquid inlet 27 when the plunger cylinder piston 5 runs to the bottom of the plunger cylinder, thereby affecting the sealing and guiding effects.

[0105] (5) The catheter in the embodiment of the present application is provided with a one-way valve 7, and the one-way valve 7 only allows the liquid to flow from the liquid suction chamber 24 to the injection hole 37, thereby preventing the liquid from flowing back.

[0106] (6) The jet hole described in the embodiment of the present application includes a first hole 39 and a second hole 40 coaxially arranged in an upper and lower direction. The jet plate 19 can be provided in multiple pieces, wherein the aperture of the first hole 39 of each jet plate 19 is 2 mm, and the aperture of the second hole 40 is 0.5 mm, 0.2 mm, 0.1 mm, and 0.05 mm, respectively, so that the jet velocity can be changed by using the jet plates 19 with different apertures.

[0107] (7) The jet-receiving member 33 described in the embodiment of the present application is movably arranged on the bottom plate 22 through a moving device, and the moving device is a ball screw assembly. The motor 21 drives the lead screw 35 to rotate, and the lead screw 35 drives the slider 36 to slide along the axial direction on the slide rail 41. The jet-receiving member 33 is placed on the slider 36 and moves synchronously with the slider 36. When the jet-receiving member 33 is fixed, the high-pressure jet penetration test in a fixed state can be studied. When the jet-receiving member 33 moves with the ball screw assembly, the high-pressure jet penetration test in a moving state can be studied.

[0108] (8) In the embodiment of the present application, the left end surface area of ​​the cylinder piston 22 is A1, and the right end surface area of ​​the plunger cylinder piston 5 is A2. By changing the piston area and adjusting the area ratio A1:A2 of the two, the liquid supply pressure can be changed to meet specific needs.

[0109] It should be understood that although the terms "first", "second", etc. may be used herein to describe various units, these units should not be limited by these terms. These terms are used only to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit without departing from the scope of the exemplary embodiments.

[0110] The directional terms such as outer, middle, inner, etc. mentioned or may be mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different positions and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0111] The above is only a preferred embodiment of the present application, and is not any formal or substantial limitation to the present application. It should be pointed out that ordinary technicians in this technical field can make several improvements and supplements without departing from the method of the present application, and these improvements and supplements should also be regarded as the protection scope of the present invention. Any technician familiar with this profession, without departing from the spirit and scope of the present application, can make some changes, modifications and evolutions of the technical content disclosed above, which are equivalent embodiments of the present application; at the same time, any changes, modifications and evolutions of any equivalent changes made to the above embodiments based on the substantial technology of the present application are still within the scope of the technical solution of the present application.

Claims

1. A high-pressure jet penetration test bench, characterized in that: The test bench comprises: The loading mechanism comprises a liquid suction part, a liquid storage tank and a power part, wherein the liquid suction part comprises a liquid suction cavity, and the liquid suction cavity is provided with a liquid inlet for liquid inlet and a liquid outlet for liquid outlet, and the liquid suction cavity is connected with the liquid storage tank through the liquid inlet, and the power part is connected with the liquid suction part to drive the liquid suction cavity to suck liquid from the liquid storage tank, and the liquid suction cavity alternately inlets or discharges liquid; The jet mechanism comprises a jet frame, a jet plate and a jetted member, wherein the jet plate is mounted on the jet frame, a jet hole is formed on the jet plate, the jet hole is connected to the liquid suction cavity through a conduit and the liquid outlet, and the jetted member is movably arranged under the jet hole through a moving device; The power unit comprises: A cylinder, comprising a cylinder body, a cylinder piston and a piston rod, wherein the cylinder piston is slidably arranged in the cylinder body along the axial direction, and the cylinder piston airtightly divides the cylinder body into a first cavity and a second cavity along the axial direction; the piston rod is located in the second cavity, and one end of the piston rod is coaxially connected to the cylinder piston, and the other end airtightly passes through the cylinder body; Directional valve; An air source, the air source is connected to the first cavity via the reversing valve and the first connecting pipe, the air source is connected to the second cavity via the reversing valve and the second connecting pipe, and the first cavity and the second cavity are alternately fed with air; The liquid suction part comprises: A plunger cylinder is arranged along the axial direction, and the left end of the plunger cylinder is fixedly connected to the cylinder; The plunger cylinder piston is slidably disposed in the plunger cylinder along the axial direction, and the left end of the plunger cylinder piston is coaxially fixedly connected to the piston rod, and the right end of the plunger cylinder piston separates the plunger cylinder from the liquid suction cavity; The liquid outlet is arranged at the upper part of the outer peripheral wall of the plunger cylinder near the right end, and the liquid inlet is arranged at the lower part of the outer peripheral wall of the plunger cylinder, and the liquid inlet is located on the movement trajectory of the plunger cylinder piston, so that when liquid is discharged from the liquid outlet, the plunger cylinder piston covers and blocks the liquid inlet, thereby realizing alternating liquid inflow or outflow from the liquid suction chamber.

2. A high pressure jet penetration test bench as claimed in claim 1, characterized in that: The power unit also includes: A throttle valve is arranged between the gas source and the reversing valve.

3. A high pressure jet penetration test bench as claimed in claim 1, characterized in that: The plunger cylinder comprises a tube body, the right end of which is sealed by an end cover, the end cover has an inner concave cavity, the liquid outlet is opened on the peripheral surface of the end cover, and the liquid outlet is connected with the liquid suction cavity through the inner concave cavity.

4. A high pressure jet penetration test bench as claimed in claim 1, characterized in that: A guide ring is provided between the plunger cylinder piston and the plunger cylinder, and the guide ring is coaxially sleeved on the plunger cylinder piston.

5. A high pressure jet penetration test bench as claimed in claim 4, characterized in that: A piston sealing ring is provided between the plunger cylinder piston and the plunger cylinder. The distance between the guide ring or piston sealing ring closest to the right end of the plunger cylinder piston and the right end face of the plunger cylinder piston is L1. When the plunger cylinder piston is located at the leftmost end in the plunger cylinder, the axial length of the liquid suction chamber is the largest, which is L2, and L1>L2.

6. A high pressure jet penetration test bench as claimed in claim 1, characterized in that: The plunger cylinder piston is coaxially fixedly connected to the piston rod through a cylinder shaft, a tenon is provided at the left end of the cylinder shaft, the tenon is coaxially inserted into the right end of the piston rod, the right end of the cylinder shaft extends into the plunger cylinder and is coaxially fixedly connected to the left end of the plunger cylinder piston through a connecting piece, and the cylinder shaft can move along the axial direction; The connecting piece includes a fixing ring, a circumferential groove is provided on the right end of the cylinder shaft, the fixing ring is fixedly clamped in the circumferential groove, the right end of the cylinder shaft is inserted into the plunger cylinder piston, and the fixing ring is fixed to the end face of the plunger cylinder piston by an axial pin.

7. A high pressure jet penetration test bench as claimed in claim 1, characterized in that: The jet rack comprises a support plate and a bottom plate which are arranged in parallel up and down, and the support plate is fixedly connected to the bottom plate through a pillar which supports the support plate; The jet plate is detachably fixed on the lower surface of the support plate, and a connecting hole which is in communication with the jet hole is provided on the support plate, and the connecting hole is in communication with the conduit; The conduit is provided with a one-way valve, and the one-way valve only allows the liquid to flow from the liquid suction cavity to the ejection hole; The jet hole includes a first hole and a second hole coaxially arranged up and down, the inner end of the first hole is connected to the inner end of the second hole, the outer end of the first hole extends to the upper surface of the jet plate and is connected to the connecting hole, the outer end of the second hole extends to the lower surface of the jet plate and is opposite to the jetted member, and the aperture of the first hole is larger than the aperture of the second hole.

8. A high pressure jet penetration test bench as claimed in claim 1, characterized in that: The mobile device comprises: Support frame; A slide rail, arranged along the axial direction; A slider is slidably arranged on the slide rail, and the slider has a plane for placing the jetted component; a through hole is arranged in the slider and passes through along the axial direction, and an internal thread is arranged in the through hole; A lead screw is arranged in correspondence with and parallel to the slide rail, passes through the through hole and meshes with the internal thread, both ends of the lead screw are rotatably arranged on the support frame, and one end of the lead screw passes through the support frame and is connected to a motor.

Images