CN113883326B - Supercharging time-delay device - Google Patents
Supercharging time-delay device Download PDFInfo
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- CN113883326B CN113883326B CN202111267016.5A CN202111267016A CN113883326B CN 113883326 B CN113883326 B CN 113883326B CN 202111267016 A CN202111267016 A CN 202111267016A CN 113883326 B CN113883326 B CN 113883326B
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- 238000013016 damping Methods 0.000 claims abstract description 109
- 230000003139 buffering effect Effects 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 230000003116 impacting effect Effects 0.000 claims abstract description 5
- 230000001105 regulatory effect Effects 0.000 claims description 39
- 230000003111 delayed effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 15
- 230000033001 locomotion Effects 0.000 description 6
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 206010044565 Tremor Diseases 0.000 description 2
- 230000009193 crawling Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229920002635 polyurethane Polymers 0.000 description 1
- 239000004814 polyurethane Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
- F16K47/02—Means in valves for absorbing fluid energy for preventing water-hammer or noise
- F16K47/023—Means in valves for absorbing fluid energy for preventing water-hammer or noise for preventing water-hammer, e.g. damping of the valve movement
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a supercharging time-delay device which comprises an air inlet section, an air outlet section, a damping piece and a movable valve core, wherein the damping section is coaxially connected to the right side of the air inlet section, the air outlet section is vertically connected with the air inlet section, the movable valve core is axially and slidably arranged in the air inlet section and/or the damping section in a sealing manner, the movable valve core axially slides to open or close the air outlet section, the air inlet section is used for introducing high-pressure gas and impacting a movable valve core shaft to slide rightwards to open the air outlet section, and the damping piece is arranged in the damping section and is used for buffering kinetic energy of the movable valve core which is impacted to slide rightwards. When the high-pressure air pushes the movable valve core to move rapidly, the movable valve core can be pressurized and delayed through the damping of the damping piece, so that the movable valve core is prevented from being impacted and rigidly collided with other parts, and direct acting force is generated to cause collision damage.
Description
Technical Field
The invention is used for simulating the impact of fuel gas on equipment, and particularly relates to a supercharging delay device.
Background
For the jet propeller, the gas pressure instantaneously jetted by the jet propeller is extremely high, and the size of the gas pressure directly influences the design requirements of the propeller parts and peripheral related parts, so that a device for simulating the impact of gas on equipment is needed, the existing simulation device generally adopts a pressure bearing device to detect the gas pressure in combination with a pressure sensor, and when the gas jet pressure is excessively high, the simulation detection device is extremely easy to damage due to a rigid bearing mode;
Therefore, in order to solve the above problems, a pressurizing time-delay device is needed, which can perform pressurizing time delay on the impact force of gas by matching the movable valve core with a damping structure, and prevent the movable valve core from being damaged by collision caused by rigid impact.
Disclosure of Invention
In view of the above, the invention provides a supercharging delay device, which can carry out supercharging delay on the impact force of gas by matching a movable valve core with a damping structure, and prevent the movable valve core from being damaged by collision caused by rigid impact.
The invention discloses a supercharging time-delay device, which comprises an air inlet section, an air outlet section, a damping piece and a movable valve core, wherein the damping section is coaxially connected to the right side of the air inlet section, the air outlet section is vertically connected with the air inlet section, the movable valve core is axially and slidably arranged in the air inlet section and/or the damping section in a sealing manner, the movable valve core axially slides to open or close the air outlet section, the air inlet section is used for introducing high-pressure gas and impacting the movable valve core shaft to slide rightwards to open the air outlet section, and the damping piece is arranged in the damping section and is used for buffering kinetic energy of the movable valve core which is impacted to slide rightwards.
Further, the damping piece includes the buffering piston and the elastic component that are located movable valve core right side, buffering piston and damping section axial sliding fit, the elastic component is connected in buffering piston axial one end and has the elastic force that prevents buffering piston axle to slide right, movable valve core axle collides with buffering piston when opening the gas outlet section to slide right and forms the buffering.
Further, have the throat section in the damping section, buffer piston axial sliding fit installs in the throat section, the right-hand member of movable case has the attenuator, the attenuator sets up with the throat section is coaxial and the attenuator external diameter is less than throat section internal diameter, when the movable case core axle was opened to the slip right the section of giving vent to anger, the attenuator stretched into in the throat section and forms annular damping clearance between attenuator excircle and the throat section interior circle.
Further, still including connecting in the pressure release section of damping section right-hand member, the pressure release section has airtight cavity, through the pressure release passageway intercommunication between the cavity on damping section position buffering piston right side and the pressure release section cavity, be provided with the pressure release governing valve on the pressure release passageway, the aperture of pressure release governing valve adjustable pressure release passageway.
Further, the movable valve core comprises a hollow left valve body and a right valve body, the right valve body is connected to the right end of the left valve body, the damper is connected to the right end of the right valve body, the right valve body is in axial sealing sliding fit with the damping section, and when the movable valve core slides leftwards to close the air outlet section, the left valve body is used for closing the air inlet section so as to prevent air flow from the air inlet section to the air outlet section.
Further, the pressure release regulating valve comprises a regulating valve body arranged on the pressure release section and a regulating valve rod sleeved in the regulating valve body in a mode of axially sliding along the regulating valve body, one end of the regulating valve body is vertically connected with the pressure release channel, the other end of the regulating valve body penetrates out of the pressure release section, the outer end of the regulating valve rod penetrates out of the pressure release section along the regulating valve body, and the inner end of the regulating valve rod can be driven to extend into the pressure release channel so as to regulate the opening of the pressure release channel.
Further, the left valve body excircle is left little big about big ladder structure, the section inner chamber that admits air is little about big ladder chamber in internal diameter near the left end side, the section of giving vent to anger is radially just right and communicates with the section of big footpath of section inner chamber of admitting air, section of big footpath section internal diameter of admitting air is greater than left valve body big footpath section external diameter, a plurality of exhaust grooves have been seted up along circumference array on the left valve body, when the section of giving vent to anger is closed to the movable valve spindle left slip, the path end of left valve body stretches into in the section of admitting air section inner chamber path section and seals the section of admitting air, the section of big footpath section of left valve body is located section of admitting air inner chamber big footpath section department, and the section inner chamber of admitting air communicates with left valve body inner chamber through the exhaust groove.
Further, the left end face of the pressure release section is provided with a closed connecting disc, the damping piece further comprises a damping tube, the damping tube is connected to the connecting disc and extends leftwards into the necking section, the buffer piston is sleeved on the damping tube and is in sliding fit with the damping tube in a shaft sliding mode, and an inner cavity of the damping tube is communicated with an inner cavity of the pressure release section.
Further, the buffer piston comprises a jacket and a buffer piece arranged in the jacket, the right end face of the jacket is provided with a connecting ring formed by radially inwards delaying, and the buffer piece is fixedly connected to the connecting ring.
Further, the damper is of a hollow structure, and the right end of the damper is provided with an avoidance hole for the left end of the damper pipe to pass through.
Further, the material mixing device further comprises a vertical driver, and the vertical driver can drive the base to lift.
The invention has the beneficial effects that:
When high-pressure gas is introduced into the air inlet section, the movable valve core is subjected to impact load, and moves rapidly in the damping section, so that the impact of the movable valve core is reduced, and in the rightward sliding process of the movable valve core, the movable valve core is provided with a two-stage buffer structure, and the damper and the necking section form a first-stage buffer structure; the clearance between the necking section and the damper is used for controlling the deflation speed of the movable valve core after being opened, so that the movement speed of the movable valve core is reduced; the buffer piston, the elastic piece, the secondary buffer air chamber and the pressure release channel form a secondary buffer structure, and the motion of the movable valve core is slowed down by the cooperation of the secondary buffer air chamber and the elastic piece; the buffer time delay performance of the movable valve core can be controlled by the pressure release regulating valve and the air pressure in the damping section;
The movable valve core can axially reciprocate, in two directions, the movable valve core runs stably in the whole process, no crawling and trembling phenomena occur, the structure can be used for simulating different air inlet pressures, the application range is wide, the reliability of the device is good, and the device can be repeatedly tested and used.
Drawings
The invention is further described below with reference to the drawings and examples.
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of a partial structure 1;
FIG. 3 is a schematic view of a partial structure 2;
FIG. 4 is a schematic diagram of a buffer piston structure;
Detailed Description
The supercharging time-delay device of the embodiment comprises an air inlet section 10, an air outlet section 20, a damping section 30, a damping piece 40 and a movable valve core 50, wherein the damping section 30 is coaxially connected to the right side of the air inlet section 10, the air outlet section 20 is vertically connected with the air inlet section 10, the movable valve core 50 is axially and slidably installed in the air inlet section 10 and/or the damping section 30 in a sealing manner, the movable valve core 50 axially slides to open or close the air outlet section 20, the air inlet section 10 is used for introducing high-pressure gas and impacting the movable valve core 50 to axially slide to the right to open the air outlet section 20, and the damping piece 40 is installed in the damping section 30 and is used for buffering kinetic energy of the movable valve core 50 which is impacted to slide to the right.
The left-right direction in this embodiment is identical to the axial direction of the intake section 10 and the damper section 30; the movable valve core 50 can be independently arranged in the air inlet section 10 or the damping section 30, or can be partially arranged in the air inlet section 10 and the damping section 30;
Referring to fig. 1, a three-way pipe 11 is connected between an air inlet section 10 and a damping section 30, a vertically downward portion of the three-way pipe 11 is used as an air outlet section 20, and a horizontal portion of the three-way pipe 11 is used as a portion of the air inlet section 10; the air inlet section 10 is externally connected with an air inlet one-way valve, 2 pressure sensors are arranged in the middle of the air inlet section 10, the pressure change condition of the air pressure of the air inlet section 10 is monitored through the pressure sensors, a pressure relief bolt is further arranged on the air inlet section 10, and a pressure relief threshold value can be set according to actual use requirements; 2 pressure sensors are arranged in the horizontal section of the three-way pipe 11, and 2 high-voltage compression switches are arranged and used for monitoring the movement condition of a piston, the pressure capability of the high-voltage compression switch Guan Cheng is not lower than 20MPa, and when the movable valve core 50 moves in place, a feedback signal is triggered;
As shown in fig. 1, the movable valve core 50 is in a state of closing the air outlet section 20, the left end of the movable valve core 50 is positioned in the air inlet section 10 and seals the air inlet section 10, the middle part of the movable valve core 50 is positioned right above the air outlet section 20, and the right end of the movable valve core 50 is positioned in the damping section 30; when the movable valve core 50 slides rightward, the left end of the movable valve core 50 slides above the air outlet section 20, so that the air inlet section 10 is communicated with the air outlet section 20, and the air outlet section 20 is opened at the moment;
When high-pressure gas is introduced into the air inlet section 10 to simulate the impact of fuel gas on equipment, the instantaneous high pressure of the high-pressure gas acts on the left end face of the movable valve core 50 to push the movable valve core 50 to slide rightwards, when the air outlet section 20 is opened, the high-pressure gas flows out through the air outlet section 20, and when the high-pressure air rapidly pushes the movable valve core 50 to move, the movable valve core 50 can be pressurized and delayed through the damping of the damping piece 40, so that the movable valve core 50 is prevented from being impacted and rigidly collided with other components, and direct acting force is generated to cause collision damage.
In this embodiment, the damping member 40 includes a damper piston 41 located on the right side of the movable valve element 50, and an elastic member 42, where the damper piston 41 is axially slidably engaged with the damping section 30, and the elastic member is connected to one axial end of the damper piston 41 and has an elastic force for preventing the damper piston 41 from axially sliding rightward, and when the movable valve element 50 axially slides rightward to open the air outlet section 20, the damper piston 41 collides to form a cushion. In connection with fig. 1, the elastic member is a cylindrical coil spring, however, the elastic member may also be a disc spring or other known elastic structures, and is mounted on the right side of the buffer piston 41, and the elastic member is connected to the right end of the buffer piston 41 and the right end of the damping section 30, so that when the buffer piston 41 is impacted to slide rightwards, the elastic member is compressed, and the elastic member absorbs energy to buffer the impact force.
In this embodiment, the damping section 30 has a necking section 30a, the buffer piston 41 is mounted in the necking section 30a in an axially sliding fit manner, the right end of the movable valve element 50 has a damper 51, the damper and the necking section are coaxially arranged, the outer diameter of the damper is smaller than the inner diameter of the necking section, and when the movable valve element 50 axially slides to the right to open the air outlet section 20, the damper extends into the necking section, and an annular damping gap is formed between the outer circle of the damper and the inner circle of the necking section.
The damping section 30 comprises a first-stage damping section 31 and a second-stage damping section 32, wherein the right end of the first-stage damping section 31 and the left end of the second-stage damping section 32 are provided with connecting flanges, the two are coaxially and hermetically connected through the connecting flanges, and the left end of the first-stage damping section 31 is coaxially and hermetically connected with the right port of the three-way pipe 11; 2 pressure sensors are arranged in the second-stage damping section 32 and used for monitoring pressure change in the damping tube, 2 high-voltage contact switches are arranged on the right side of the movable valve core 50 in the first-stage damping section 31 and used for monitoring the movement condition of a piston, the pressure capability of the high-voltage contact switch Guan Cheng is not lower than 20MPa, and a feedback signal is triggered when the movable valve core 50 moves in place;
The necking section 30a is positioned at the left port of the secondary damping section 32, that is, the whole inner cavity of the secondary damping section 32 is a stepped cavity with small left and large right, the elastic piece is arranged in the large-diameter cavity of the secondary damping section 32, the small-diameter section is a necking section, the inner diameter of the necking section is smaller than that of the primary damping section 31, the outer diameter of the damper 51 is slightly smaller than that of the necking section, the outer diameter of the damper is preferably smaller than that of the necking section by 2-6mm, that is, when the damper stretches into the necking section, an annular damping gap is formed between the outer circle of the damper and the inner circle of the necking section by 1-3mm; when the damper stretches into the necking section, air between the damper and the buffer piston 41 is compressed, air between the right end of the corresponding right valve body 53 and the left end of the second-stage damping section 32 is compressed to form a compression damping force, accurate matching of the damper and the necking section is facilitated through the arrangement of the annular gap, self-adaptive circulation of air between the damper and the buffer piston 41 and air between the right end of the right valve body 53 and the left end of the second-stage damping section 32 is facilitated through the arrangement of the damping gap, the air flow rate is regulated, the air pressures on two sides are guaranteed to be approximately equal, and the pressure acting on the damper and the right end of the right valve body 53 are guaranteed to be approximately equal.
In this embodiment, the damping device further includes a pressure release section 60 connected to the right end of the damping section 30, the pressure release section 60 has a closed chamber, the chamber located on the right side of the damping piston 41 in the damping section 30 is communicated with the chamber of the pressure release section 60 through a pressure release channel 61, a pressure release adjusting valve 62 is disposed on the pressure release channel 61, and the opening of the pressure release channel 61 can be adjusted by the pressure release adjusting valve. Referring to fig. 3, a pressure relief pipe 64 is connected to the left end face of the pressure relief section 60, wherein the inner cavity of the pressure relief pipe is used as a pressure relief channel 61, and a solenoid valve 65 can be externally connected to the right end of the pressure relief section 60 to regulate the air pressure in the pressure relief section 60; the chamber at the left side of the buffer piston 41 at the necking segment 30a forms a primary buffer air chamber 33, wherein the damper 51 and the necking segment 30a form a primary buffer structure; the space between the buffer piston 41 and the pressure relief section 60 in the secondary damping section 32 forms a secondary buffer air chamber 34, and the buffer piston 41, the elastic member 42, the secondary buffer air chamber 34 and the pressure relief channel 61 form a secondary buffer structure.
In this embodiment, the movable valve element 50 includes a hollow left valve body 52 and a right valve body 53, the right valve body 53 is connected to the right end of the left valve body 52, the damper 51 is connected to the right end of the right valve body 53, the right valve body 53 is axially slidably matched with the damper section 30 in a sealing manner, and when the movable valve element 50 slides axially leftwards to close the air outlet section 20, the left valve body 52 is used for closing the air inlet section 10 to prevent air flow from the air inlet section 10 to the air outlet section 20.
As shown in fig. 1 and 2, the left valve body is used for closing or opening the air inlet section 10, the right valve body is used for being in sealing fit with the damping section 30, the right valve body also mainly serves as a guiding function, the precision of the whole movable valve core 50 is improved, and further, the left valve body can be accurately matched with the inner cavity of the air inlet section 10 when the air inlet section 10 is opened or closed; wherein the right valve body excircle is provided with two valve body sealing rings 54 and two support rings 55, and wherein two valve body sealing rings are located between two support ring axial to improve sealing performance and sliding performance of right valve body.
In this embodiment, the pressure relief adjusting valve 62 includes an adjusting valve body disposed on the pressure relief section 60 and an adjusting valve rod 62a sleeved in the adjusting valve body in a manner of sliding along the axial direction of the adjusting valve body, one end of the adjusting valve body is vertically connected with the pressure relief channel 61, the other end of the adjusting valve body penetrates out of the pressure relief section 60, the outer end of the adjusting valve rod penetrates out of the pressure relief section 60 along the adjusting valve body, and the inner end of the adjusting valve rod can be driven to extend into the pressure relief channel 61 so as to adjust the opening of the pressure relief channel 61. When the opening degree is zero, the pressure relief channel 61 is closed, and when the opening degree is maximum, the pressure relief channel 61 is completely opened;
The regulating valve body comprises an upper regulating valve body 62b and a lower regulating valve body 62c which are coaxially and oppositely arranged, wherein the upper regulating valve body 62b is connected to the pressure relief section 60 and penetrates out of the pressure relief section 60 in a sealing way, the lower regulating valve body 62c is vertically welded with the pressure relief pipe 64 to form a three-way-like structure, the upper half section of the regulating valve rod is in threaded transmission fit with the upper regulating valve body 62b, the upper end of the regulating valve rod is connected with a rotary hand wheel, the upper half section of the regulating valve rod is provided with scale marks, and the opening and closing degree of the regulating valve port each time can be recorded;
The lower half section of the adjusting valve rod 62a extends into the upper adjusting valve body 62b and the lower adjusting valve body 62c at the same time, the adjusting valve rod 62a can be driven to slide from the outside, when the adjusting valve rod 62a slides to the lowest, the pressure relief channel 61 is completely closed, when the adjusting valve rod 62a is driven to slide upwards into the lower adjusting valve body 62c, the pressure relief channel 61 is completely opened, the opening of the pressure relief channel 61 can be adjusted by adjusting the sliding position of the adjusting valve rod 62a, the adjusting valve rod is firstly assembled into the upper adjusting valve body, and then the pressure relief channel 60 is assembled; the high-pressure air discharge flow in the secondary buffer air chamber 34 is regulated through a regulating valve, and the optimal flow is selected for the pressures of different recent sections, so that the impact on the movable valve core 50 is reduced to the minimum;
In this embodiment, the outer circle of the left valve body 52 is in a stepped structure with a small left and a large right, the inner cavity of the air inlet section 10 is close to the left end side and is a stepped cavity with a small left and a large right inner diameter, the air outlet section 20 is radially opposite to and communicated with the large-diameter section of the inner cavity of the air inlet section 10, the inner diameter of the large-diameter section of the air inlet section 10 is larger than the outer diameter of the large-diameter section of the left valve body 52, a plurality of exhaust grooves 52a are formed in the left valve body 52 along a circumferential array, when the movable valve core 50 axially slides leftwards to close the air outlet section 20, the small-diameter end of the left valve body extends into the small-diameter section of the inner cavity of the air inlet section 10 and seals the air inlet section 10, the large-diameter section of the left valve body is located at the large-diameter section of the inner cavity of the air inlet section 10, and the inner cavity of the air inlet section 10 is communicated with the inner cavity of the left valve body through the exhaust grooves.
With reference to fig. 1, the end face of the small-diameter section at the left end of the left valve body is an arc end face, and the end face can also be a hemispherical end face, so that the left valve body can slide leftwards to be matched with the air inlet section 10, the whole valve body is of a hollow structure, the light weight design of the movable valve core 50 is facilitated, and meanwhile, the auxiliary air exhaust of an air exhaust groove is also facilitated; as shown in fig. 1 and 2, when the movable valve element 50 slides rightward, the opening gap of the air intake section 10 is small, and the air exhaust groove can assist in exhausting air, so as to accelerate air evacuation.
In this embodiment, a closed connection disc 63 is disposed at the left end face of the pressure relief section 60, the damping member 40 further includes a damping tube 43, the damping tube is connected to the connection disc and extends leftwards into the necking section 30a, the buffer piston 41 is sleeved on the damping tube and is in sliding fit with the damping tube in axial direction, and an inner cavity of the damping tube is communicated with an inner cavity of the pressure relief section 60.
As shown in fig. 1 and 3, the damper tube 43 extends into the necking section 30a so that the left port of the damper tube is communicated with the inner cavity of the necking section, the right port of the damper tube is communicated with the inner cavity of the pressure relief section 60, and the damper tube is used as the pressure relief channel 61 of the first-stage buffer air chamber 33; the right end face of the connecting disc 63 is also connected with a piston sleeve 44, the piston sleeve 44 is coaxially sleeved in the secondary damping section 32, the inner diameter of the piston sleeve 44 is equal to or slightly larger than the outer diameter of the buffer piston 41, the right end of the buffer piston 41 stretches out of the necking section rightwards and stretches into the piston sleeve 44 to form a support, an auxiliary pressure relief annular channel 45 is arranged between the outer circle of the piston sleeve 44 and the inner circle of the large-diameter section of the secondary damping section 32, and a through hole communicated with the auxiliary pressure relief annular channel 45 is formed in the connecting disc 63.
In this embodiment, the buffer piston 41 includes a casing 41a and a buffer member 41b mounted in the casing, where the right end surface of the casing has a connection ring 41c formed by delaying radially inward, and the buffer member is fixedly connected to the connection ring 41 c. Referring to fig. 3, the outer sleeve 41a is a metal sleeve, the buffer member is annular polyurethane, the outer circle of the buffer member is in sealing fit with the inner circle of the outer sleeve, the buffer member is fixedly connected with the connecting ring through screws, the buffer member axially seals and slides on the damping tube 43, the outer sleeve 41a is in axial sealing and sliding fit with the inner circle of the necking section 30a, in order to prevent the damper 51 from impacting the outer sleeve 41a, the inner circle of the necking section 30a is a step cavity with left small diameter and right large diameter, the outer sleeve 41a is in axial sliding fit with the large diameter section of the necking section, and the inner diameter of the outer sleeve 41a is equal to or larger than the inner diameter of the small diameter section of the necking section 30a, so that the outer diameter of the damper 51 is smaller than the inner diameter of the outer sleeve, and further, when the damper 51 slides rightwards, the damper 41b can directly impact on the buffer member 41b and cannot rigidly impact with the outer sleeve.
In this embodiment, the damper 51 has a hollow structure, and the right end of the damper is provided with a avoiding hole 51a through which the left end of the damper tube 43 passes. When the movable valve core 50 integrally slides rightwards, the damping tube 43 penetrates to the damper 51 to form an avoidance structure, so that the axial sliding stroke of the movable valve core 50 is increased, and the pressure relief of the primary buffer air chamber is facilitated.
When the high-pressure gas is suddenly introduced into the air inlet section 10, the movable valve core 50 is subjected to impact load, and quickly slides right in the damping section 30, so that the impact of the movable valve core 50 is reduced, and the movable valve core 50 has a two-stage buffer structure in the rightward sliding process; the damper 51 and the necking section 30a form a primary buffer structure; the clearance between the necking section 30a and the damper is utilized to control the deflation speed of the movable valve core 50 after being opened, so that the movement speed of the movable valve core 50 is reduced; the buffer piston 41, the elastic member 42, the secondary buffer air chamber 34 and the pressure release channel 61 form a secondary buffer structure, the motion of the movable valve core 50 is slowed down by the cooperation of the secondary buffer air chamber and the elastic member,
The damping section 30 is provided with a one-way valve at the right side of the movable valve core 50, when the damping section 30 is inflated, the air pressure of each air chamber in the damping section 30 can be adjusted, when the air is deflated through the electromagnetic valve 65, the air pressure of the damping section 30 is reduced, therefore, the buffering time delay performance of the movable valve core 50 can be controlled by the pressure release regulating valve 62 and the air pressure in the damping section 30, the movable valve core 50 can axially reciprocate, in two directions, the movable valve core 50 runs stably in the whole course, no crawling and trembling phenomenon exists, the structure can be used for simulating different air inlet pressures, the application range is wider, the reliability of the device is good, and the repeated test can be used.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a pressure boost time delay device which characterized in that: the damping valve comprises an air inlet section, an air outlet section, a damping piece and a movable valve core, wherein the damping section is coaxially connected to the right side of the air inlet section, the air outlet section is vertically connected with the air inlet section, the movable valve core is axially and slidably arranged in the air inlet section and/or the damping section in a sealing manner, the movable valve core axially slides to open or close the air outlet section, the air inlet section is used for introducing high-pressure gas and impacting the movable valve core shaft to slide rightwards to open the air outlet section, and the damping piece is arranged in the damping section and is used for buffering kinetic energy of the movable valve core which is impacted to slide rightwards;
the damping piece comprises a buffer piston and an elastic piece, wherein the buffer piston is positioned on the right side of the movable valve core, the buffer piston is in axial sliding fit with the damping section, the elastic piece is connected to one axial end of the buffer piston and has elastic force for preventing the buffer piston shaft from sliding rightwards, and the movable valve core collides with the buffer piston to form buffer when sliding rightwards to open the air outlet section;
The damping section is internally provided with a necking section, the buffer piston is axially and slidably arranged in the necking section, the right end of the movable valve core is provided with a damper, the damper and the necking section are coaxially arranged, the outer diameter of the damper is smaller than the inner diameter of the necking section, and when the movable valve core slides rightwards to open the air outlet section, the damper stretches into the necking section, and an annular damping gap is formed between the outer circle of the damper and the inner circle of the necking section;
The damping device comprises a damping section, a pressure release regulating valve and a pressure release control valve, wherein the damping section is connected with the damping section, the pressure release section is provided with a closed cavity, the cavity positioned on the right side of the damping piston in the damping section is communicated with the pressure release section cavity through a pressure release channel, the pressure release channel is provided with the pressure release regulating valve, and the opening of the pressure release channel can be regulated by the pressure release regulating valve;
The movable valve core comprises a hollow left valve body and a right valve body, the right valve body is connected to the right end of the left valve body, the damper is connected to the right end of the right valve body, the right valve body is in axial sealing sliding fit with the damping section, and when the movable valve core slides leftwards to close the air outlet section, the left valve body is used for closing the air inlet section so as to prevent air flow from the air inlet section to the air outlet section.
2. The boost delay apparatus of claim 1, wherein: the pressure relief regulating valve comprises a regulating valve body arranged on the pressure relief section and a regulating valve rod sleeved in the regulating valve body in an axial sliding mode along the regulating valve body, one end of the regulating valve body is vertically connected with the pressure relief channel, the other end of the regulating valve body penetrates out of the pressure relief section, the outer end of the regulating valve rod penetrates out of the pressure relief section along the regulating valve body, and the inner end of the regulating valve rod can be driven to extend into the pressure relief channel so as to regulate the opening of the pressure relief channel.
3. The boost delay apparatus of claim 1, wherein: the outer circle of the left valve body is of a step structure with small left and large right, the inner cavity of the air inlet section is close to the left end side and is of a step cavity with small left and large inner diameter, the air outlet section is radially opposite to and communicated with the large-diameter section of the inner cavity of the air inlet section, the inner diameter of the large-diameter section of the air inlet section is larger than the outer diameter of the large-diameter section of the left valve body, a plurality of exhaust grooves are formed in the left valve body along a circumferential array, when the movable valve shaft slides left to close the air outlet section, the small-diameter end of the left valve body extends into the small-diameter section of the inner cavity of the air inlet section and seals the air inlet section, the large-diameter section of the left valve body is positioned at the large-diameter section of the inner cavity of the air inlet section, and the inner cavity of the air inlet section is communicated with the inner cavity of the left valve body through the exhaust grooves.
4. The boost delay apparatus of claim 2, wherein: the left end face of the pressure release section is provided with a closed connecting disc, the damping piece further comprises a damping tube, the damping tube is connected to the connecting disc and extends leftwards into the necking section, the buffer piston is sleeved on the damping tube and is in sliding fit with the damping tube in a shaft sliding mode, and an inner cavity of the damping tube is communicated with an inner cavity of the pressure release section.
5. The boost delay apparatus of claim 1, wherein: the buffering piston comprises a jacket and a buffering piece arranged in the jacket, wherein the right end face of the jacket is provided with a connecting ring formed by extending radially inwards, and the buffering piece is fixedly connected to the connecting ring.
6. The boost delay apparatus of claim 4, wherein: the damper is of a hollow structure, and an avoidance hole for the left end of the damper pipe to pass through is formed in the right end of the damper.
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| CN113883326B true CN113883326B (en) | 2024-06-04 |
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| CN112555469A (en) * | 2020-11-11 | 2021-03-26 | 北京天地玛珂电液控制***有限公司 | Constant specific pressure large flow safety valve |
| CN216045774U (en) * | 2021-10-28 | 2022-03-15 | 中国船舶重工集团衡远科技有限公司 | Pressurizing delay mechanism |
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2021
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| JPH10122401A (en) * | 1996-10-14 | 1998-05-15 | Kayaba Ind Co Ltd | Pressure rising buffer mechanism for relief valve |
| CN102235393A (en) * | 2011-08-15 | 2011-11-09 | 宁波广天赛克思液压有限公司 | Buffer relief valve for hydraulic motor |
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| CN113883326A (en) | 2022-01-04 |
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