CN115077798A - Pressure measuring sealing locking device and locking method for bottom of swing rod type storage box - Google Patents
Pressure measuring sealing locking device and locking method for bottom of swing rod type storage box Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
- F16J15/10—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces with non-metallic packing
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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
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/46—Sealings with packing ring expanded or pressed into place by fluid pressure, e.g. inflatable packings
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- 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
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- 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
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- 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
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- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- 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
- G01N2203/0044—Pneumatic means
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- 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
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- 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
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Abstract
The invention belongs to the technical field of civil aerospace, and relates to a pressure measuring and sealing locking device for the bottom of a swing rod type storage box, which comprises: the invention relates to a pressure measuring sealing locking device, which comprises a sealing bottom plate, a pressure ring and a swing rod type locking device, wherein a wedge-shaped pressing block in the swing rod type locking device is extruded in a taper fit manner, the purpose of sealing and locking the bottom of a storage tank and the bottom plate by up-down extrusion is achieved by changing large displacement and small thrust in the horizontal direction into small displacement and large thrust in the vertical direction, and the bottom of the storage tank is finally sealed for sealing and pressure measuring, so that the problems that the sealing effect is difficult to control when the previous pressure measuring sealing and locking is carried out, the labor intensity of sealing adjustment is high, the workload is high, the working time is very long, the time is required to be repeatedly and continuously adjusted one by one, the time is wasted, the labor is wasted, and the efficiency is low are solved.
Description
Technical Field
The invention belongs to the technical field of civil aerospace, and relates to a pressure measuring sealing locking device and a locking method for the bottom of a swing rod type storage box.
Background
The current civil aerospace field is gradually started and forms a certain scale, and the carrier rocket also meets the leap-type development opportunity just before the air, thereby having wide and deep promotion significance for the experimental research of the carrier rocket. The storage tank is an important component of a carrier rocket, the tightness and the stability and the reliability of a tank bottom structure are critical, so that the airtight hydraulic detection of the tank bottom is an important process, and the tank bottom hydraulic airtight equipment is one of the keys of products in the aerospace field for ensuring the performance of the storage tank to reach a high level.
One of the pressure measuring and sealing locking devices at the bottom of the tank of the existing carrier rocket is to use a group of servo motors to control a pull-down screw, the screw drives a clasp to lock a pressure ring, so that the bottom of the tank is fixed, however, the screw is easy to grind, the adjustment is difficult to be in place, and the fine adjustment amount is difficult to control the sealing effect. The other pressure measuring sealing and locking device adopts the following technical scheme that a plurality of large bolts are screwed down by a circle to lock the compression ring, so that the bottom of the box is fixed, and the device has the following defects: the labor intensity is high, the workload is high, if the sealing leakage exists, the problem that the sealing leakage is difficult to solve immediately is solved, the bolt is very complicated to screw, the working time is very long, and the sealing leakage needs to be repeatedly adjusted continuously one by one, so that the time and the labor are wasted, and the efficiency is low.
Therefore, a pressure measuring and sealing locking device for the bottom of the tank of the carrier rocket, which has the advantages of high speed, high efficiency, good sealing effect, time saving, labor saving and simple operation, is needed to solve the problem.
Disclosure of Invention
The technical scheme adopted by the invention for solving the technical problem is as follows: the utility model provides a pendulum rod type storage tank bottom of the case pressure measurement sealing locking device, includes: the device comprises a sealing bottom plate, a compression ring and a swing rod type locking device;
the sealing bottom plate is in a wafer shape, an upward convex annular boss is arranged at the edge of the upper surface of the sealing bottom plate, the inner diameter of an annular outer side wall of the annular boss is equal to that of a tank opening at the bottom of the storage tank, an annular upper sealing groove which is inwards concave along the radial direction is arranged at the upper part of the annular outer side wall of the annular boss, an annular upper sealing ring is arranged in the upper sealing groove, and the sealing bottom plate, the annular boss, the upper sealing groove and the bottom of the storage tank share a rotating shaft;
the compression ring is annular, the outer diameter of the compression ring is equal to the outer diameter of the sealing bottom plate, the inner diameter of the compression ring is smaller than the outer diameter of the step at the edge of the bottom of the storage tank and larger than the spherical outer diameter of the bottom of the storage tank, and the top surface of the compression ring is provided with a first taper with the thickness gradually reduced along the radial direction;
the swing rod type locking device comprises a wedge-shaped pressing block, a pull rod, a swing rod, a telescopic rod and a seat frame, wherein an inwards concave arc-shaped groove is horizontally arranged on one side of the wedge-shaped pressing block facing the bottom of the storage box, the opening radian of the arc-shaped groove is the same as the outer diameter radian of the steps at the edge, a second taper with the gradually reduced height size of the groove opening is arranged on the top surface of the arc-shaped groove along the direction from the groove opening to the groove bottom, the first taper is matched with the second taper, the height of the groove opening of the arc-shaped groove in the vertical direction is greater than the sum of the edge thickness of the compression ring and the edge thickness of the sealing bottom plate, the height of the groove bottom in the vertical direction is less than the sum of the edge thickness of the compression ring and the edge thickness of the sealing bottom plate, the pull rod is a straight rod, the swing rod is an arc-shaped rod, the upper surface of the seat frame is horizontal, the middle section of the swing rod is hinged and connected with the seat frame through a first hinged support, one end of the swing rod is connected with the telescopic end of the telescopic rod through a second hinged support, one end of the pull rod, which is far away from the second hinge fulcrum, is hinged and connected with the wedge-shaped pressing block through a fourth hinge fulcrum, the fixed end of the telescopic rod is hinged and connected with the lower part of the seat frame through a fifth hinge fulcrum, and the telescopic rod drives the swing rod to swing back and forth around the first hinge fulcrum when being telescopic so as to drive one side of an arc-shaped groove of the pull rod to push and pull the wedge-shaped pressing block to slide back and forth along the radial direction on the upper surface of the seat frame towards the direction of a rotating shaft at the bottom of the storage box; the telescopic rod can be selectively extended and retracted by using a hydraulic cylinder, an air cylinder, an electric cylinder and a screw rod;
after the bottom of the storage box is buckled on the sealing bottom plate, a closed space is formed inside the bottom of the storage box, the compression ring is sleeved and buckled on the step at the edge, a plurality of swing rod-shaped locking devices are arranged, the swing rod-shaped locking devices are uniformly distributed around the outer circumference of the sealing bottom plate, wedge-shaped pressing blocks of the swing rod-shaped locking devices press the compression ring to one side of the sealing bottom plate when sliding towards the direction of a rotating shaft of the bottom of the storage box simultaneously so as to achieve the effect of sealing and pressing the bottom of the storage box, and the upper sealing ring seals a gap between the annular outer edge of the annular boss and the inner diameter of a box opening of the bottom of the storage box; the storage tank bottom and the bottom plate are sealed and locked by up-down extrusion, and the storage tank bottom can be tested after sealing and locking are completed.
Preferably, the bottom of the seat frame is fixedly connected with a sliding block, the sliding block is connected with a sliding rail in a sliding manner, the sliding rail is horizontally and radially laid, the bottom of the seat frame is provided with a lock catch for locking the displacement trend between the seat frame and the sliding rail, and the inward end of the sliding rail faces to a rotating shaft at the bottom of the storage box; the radial position of the swing rod type locking device is adjusted when the sliding rail and the sliding block are used for the bottoms of the storage boxes with different sizes, so that the invention can be suitable for the bottoms of the storage boxes with different sizes to carry out pressure measurement, sealing and locking, and has better universal applicability.
Preferably, 4 to 16 swing rod type locking devices are arranged, the number of the swing rod type locking devices is selected according to different pressure tests and the requirements of the bottoms of the storage boxes with different sizes, and odd number of average stress tests with better dislocation and uniform distribution or even number of symmetrical balance tests with better symmetrical and uniform distribution can be selected.
Preferably, an annular lower sealing groove is formed in the joint of the annular outer side wall of the annular boss and the upper surface of the sealing bottom plate, the radial cross section of the lower sealing groove is L-shaped, the L-shaped horizontal part of the lower sealing groove is located in the upper surface of the sealing bottom plate, the L-shaped vertical part of the lower sealing groove is located in the annular outer side surface of the annular boss, the outer diameter of the L-shaped horizontal part of the lower sealing groove is not smaller than the outer diameter of a box opening of the bottom of the storage box, the lower sealing groove and the bottom of the storage box share a rotating shaft, a lower sealing ring is arranged in the lower sealing groove, and the lower sealing groove and the lower sealing ring can be matched to better seal a gap between the sealing bottom plate and the bottom of the storage box, so that the requirement of higher sealing performance test is met.
Preferably, the cross section of the lower sealing ring along the radial direction is L-shaped, and the L-shaped horizontal part of the lower sealing ring is made of hard rubber; the horizontal part is mainly used for bearing the pressure of the lower edge of the opening of the bottom of the storage box and the horizontal part of the edge of the upper surface of the sealing bottom plate, namely the downward pressing locking force of the pressure ring to the bottom of the storage box through the edge step after being pressed by force, so that the hard rubber can provide better supporting force to the bottom of the storage box.
More excellent, the L shape vertical portion inside of lower seal circle is equipped with annular air bag, vertical portion mainly is used for the gap of the case mouth inner wall at the sealed storage tank bottom of the case and the annular lateral wall of annular boss, provide better leakproofness, in order to adapt to the higher gas tightness test's in the storage tank bottom of the case demand, therefore, air bag aerifys air bag after pendulum rod type locking device locking treats that the inside confined space that forms of storage tank bottom of the case, make the inseparabler laminating of the L shape vertical portion's of lower seal circle outer wall on the case mouth inner wall at the storage tank bottom of the case and the annular lateral wall of annular boss, and provide certain pressure tension, make storage tank bottom of the case inner chamber can bear higher internal pressure and not lose heart, increase sealed effect, guaranteed that the storage tank bottom can bear higher pressure test, improve the pressure measurement standard.
Preferably, one end of the upper surface of the seat frame, which is far away from the wedge-shaped pressing block, is fixedly connected with a bracket, the first hinged point is positioned on the bracket, and the first hinged point and the fourth hinged point are positioned on the same horizontal plane; the first hinged point and the fourth hinged point on the same horizontal plane enable the swing rod to swing to push the pull rod to reach an optimal lever amplification point when the pull rod is in a horizontal position, at the moment, the pull rod is turned from inclination to horizontal, maximum pressure and minimum displacement are provided for the wedge-shaped pressing block, the pressing ring is convenient to press the edge step of the bottom of the storage box, and better locking and sealing are provided for the buckling position of the bottom of the storage box and the sealing bottom plate.
Preferably, the distance of first hinge fulcrum to second hinge fulcrum is less than the distance of first hinge fulcrum to third hinge fulcrum, be the straight line shape between first hinge fulcrum to the second hinge fulcrum, be the arc between first hinge fulcrum to the third hinge fulcrum, the stock has the amplification effect of better power to the quarter butt in the leverage, consequently can provide bigger thrust through the pendulum rod to the pull rod, and the stock part is the arc and can converts the motion of second hinge fulcrum department into horizontal linear motion as far as, and the arc part can play better buffering and the effect of bradyseism to the impact vibration of telescopic link simultaneously.
The invention also discloses a pressure measuring sealing locking method for the bottom of the oscillating bar type storage box, which uses the pressure measuring sealing locking device and comprises the following steps:
the method comprises the following steps: moving a plurality of seat frames which are uniformly distributed around to a compaction position according to the size of the bottom of a storage box which needs to be subjected to pressure measurement, sealing and locking, and driving a telescopic rod to contract so that a wedge-shaped pressing block is in an opening state of moving outwards along the radial direction;
step two: dropping the sealing bottom plate onto the upper surface of the seat frame and pre-positioning;
step three: placing the opening at the bottom of the storage box on the sealing bottom plate downwards, so that the inner diameter of the box opening at the bottom of the storage box is sleeved and buckled on the annular outer side wall of the annular boss from top to bottom;
step four: sleeving a pressure ring on a step at the edge of the bottom of the storage box from top to bottom;
step five: the expansion rod is driven to extend, so that the wedge-shaped pressing block horizontally extends and moves inwards, the pressing ring is extruded along the tapered inclined plane through a first taper and a second taper which are matched with each other, the pressing ring is stressed to vertically move downwards, so that an opening surface of the bottom of the storage box is tightly attached to the upper surface of the sealing bottom plate, and a closed space is formed inside the bottom of the storage box;
step six: after a closed space is formed inside the bottom of the storage box, an inflatable airbag in the L-shaped vertical part of the lower sealing ring is inflated, so that the inner side of the bottom of the storage box is tightly sealed, and the sealing effect is improved;
step seven: then, pressurizing a closed space inside the bottom of the storage box, and then carrying out airtight hydraulic detection;
step eight: carrying out pressure relief after the airtight hydraulic detection is finished;
step nine: deflating the inflatable air bag in the L-shaped vertical part of the lower sealing ring after pressure relief;
step ten: and unlocking the bottom of the storage box after the air of the inflatable air bag is deflated, wherein the unlocking action steps are in reverse order to the steps from the first step to the fifth step.
Preferably, in the step, when the specification and the size of the storage tank bottom are changed for testing, the position of each seat frame is adjusted and locked along the sliding rail according to different storage tank bottoms, and then different sealing bottom plates, different compression rings and different lower sealing rings are changed.
The invention has the beneficial effects that:
1. the invention achieves the purpose of sealing and locking the bottom of the storage tank and the bottom plate by means of up-down extrusion through the horizontal extending and inward movement of the wedge-shaped pressing block in the swing rod type locking device and the taper fit extrusion, changing the large displacement and small thrust in the horizontal direction into the small displacement and large thrust in the vertical direction, and can test the bottom of the storage tank after the sealing and locking are completed, and finally seal the bottom of the storage tank for sealing and pressure measurement, thereby avoiding the problems that the sealing effect is difficult to control when the storage tank is sealed and locked by the previous pressure measurement, the labor intensity of sealing adjustment is high, the workload is large, the working time is very long, the continuous adjustment is needed repeatedly and continuously one by one, the time and the labor are wasted, and the efficiency is low.
2. The invention arranges the lower sealing groove with the L-shaped cross section at the joint of the annular outer side wall of the annular boss and the upper surface of the sealing bottom plate, the lower sealing groove is internally provided with the lower sealing ring with the same shape, the L-shaped horizontal part of the lower sealing ring adopts hard rubber to provide better supporting force for the bottom of the storage box, the annular inflatable air bag is arranged in the L-shaped vertical part of the lower sealing ring, so that the swing rod type locking device can inflate the inflatable air bag after locking the inside of the bottom of the storage box to form a closed space, and the outer wall of the sealing ring at the L-shaped vertical part of the lower sealing ring is more tightly attached to the inner wall of the opening of the bottom of the storage box and the annular outer side wall of the annular boss and provides certain pressure tension, so that the inner cavity at the bottom of the storage box can bear higher internal pressure without air leakage, the sealing effect is increased, and the storage box can bear higher pressure test, the pressure measurement standard is improved, so that the measurement result is more reliable.
Drawings
FIG. 1 is an isometric view of a locking state of a pressure-measuring sealing locking device and a locking method for the bottom of a swing link type storage tank;
FIG. 2 is an isometric view in an open state;
FIG. 3 is a front view of the locked state;
FIG. 4 is a top view of the locked state;
FIG. 5 is a front cross-sectional view of the locked state;
FIG. 6 is a front sectional view of the open state;
FIG. 7 is a partial view;
FIG. 8 is a disassembled view of the inflatable seal;
FIG. 9 is a front cross-sectional view of the latch after it is locked.
In the figure: 1. sealing the bottom plate; 2. pressing a ring; 3. a swing-bar type locking device; 4. the bottom of the storage box; 101. an annular boss; 102. an upper seal groove; 103. an upper sealing ring; 104. a lower seal groove; 105. a lower seal ring; 106. an inflatable air bag; 201. a first taper; 301. a wedge-shaped pressing block; 302. a pull rod; 303. a swing rod; 304. a telescopic rod; 305. a seat frame; 306. an arc-shaped slot; 307. a second taper; 308. a first hinge pivot point; 309. a second hinge pivot; 310. a third hinge pivot; 311. a fourth hinge pivot; 312. a fifth hinge fulcrum; 313. a slider; 314. a slide rail; 315. locking; 316. a support; 401. an edge step.
Detailed Description
The related art in the present invention will be described clearly and completely with reference to the accompanying drawings in the following embodiments, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 8, a pressure measuring sealing locking device and a locking method for the bottom of a swing rod type storage box comprise: the device comprises a sealing bottom plate 1, a pressure ring 2 and a swing rod type locking device 3;
the sealing bottom plate 1 is in a wafer shape, an upward convex annular boss 101 is arranged at the edge of the upper surface of the sealing bottom plate 1, the annular outer side wall of the annular boss 101 is equal to the inner diameter of a tank opening of the tank bottom 4 of the storage tank, an annular upper sealing groove 102 which is inward concave along the radial direction is arranged at the upper part of the annular outer side wall of the annular boss 101, an annular upper sealing ring 103 is arranged in the upper sealing groove 102, the sealing bottom plate 1, the annular boss 101, the upper sealing groove 102 and the tank bottom 4 of the storage tank are in the same rotating shaft, and the upper sealing ring 103 can be used for preventing the tank bottom of the tank bottom 4 from colliding or scratching the inner wall in the process of descending and setting;
the compression ring 2 is annular, the outer diameter of the compression ring 2 is equal to the outer diameter of the sealing bottom plate 1, the inner diameter of the compression ring 2 is smaller than the outer diameter of the edge step 401 of the storage tank bottom 4 and larger than the spherical outer diameter of the storage tank bottom 4, and the top surface of the compression ring 2 is provided with a first taper 201 with gradually reduced thickness along the radial direction;
the swing rod type locking device 3 comprises a wedge-shaped pressing block 301, a pull rod 302, a swing rod 303, a telescopic rod 304 and a seat frame 305, wherein an inwards concave arc-shaped groove 306 is horizontally arranged on one side of the wedge-shaped pressing block 301 facing the bottom 4 of the storage box, the opening radian of the arc-shaped groove 306 is the same as the outer diameter radian of the edge step 401, a second taper 307 with the gradually reduced groove opening height is arranged on the top surface of the arc-shaped groove 306 along the direction from the groove opening to the groove bottom, the first taper 201 is matched with the second taper 307, the height of the groove opening of the arc-shaped groove 306 in the vertical direction is greater than the sum of the edge thickness of the compression ring 2 and the edge thickness of the sealing bottom plate 1, the height of the groove bottom of the arc-shaped groove 306 in the vertical direction is smaller than the sum of the edge thickness of the compression ring 2 and the edge thickness of the sealing bottom plate 1, the pull rod 302 is a straight rod, the swing rod 303 is an arc-shaped rod, the upper surface of the seat frame 305 is horizontal, the middle section of the swing rod 303 is hinged and connected with the seat frame 305 through a first hinge point 308, one end of the swing rod 303 is hinged with the pull rod 302 through a second hinge point 309, the other end of the swing rod 303 is hinged and connected with the telescopic end of the telescopic rod 304 through a third hinge fulcrum 310, one end, away from the second hinge fulcrum 309, of the pull rod 302 is hinged and connected with the wedge-shaped pressing block 301 through a fourth hinge fulcrum 311, the fixed end of the telescopic rod 304 is hinged and connected with the lower part of the seat frame 305 through a fifth hinge fulcrum 312, and when the telescopic rod 304 is telescopic, the swing rod 303 is driven to swing back and forth around the first hinge fulcrum 308 so as to drive the pull rod 302 to push and pull one side of an arc-shaped groove 306 of the wedge-shaped pressing block 301 to slide back and forth along the radial direction on the upper surface of the seat frame 305 towards the rotating shaft direction of the bottom 4 of the storage box; wherein telescopic link 304 can choose to use pneumatic cylinder, electric jar, screw rod to realize flexible, wherein only the design of clamping ring 2 top surface has the ring inclined plane of taking first tapering 201, and sealing bottom plate 1's cooperation bottom surface adopts straight face, the locking force of the wedge briquetting 301 that effectively reduces to reach fine locking effect equally. The inclined wedge of the wedge-shaped pressing block 301 is recommended to adopt an inclined angle below 5 degrees, so that the self-locking effect is achieved;
after the storage box bottom 4 is buckled on the sealing bottom plate 1, a closed space is formed inside the storage box bottom 4, the compression ring 2 is sleeved and buckled on the edge step 401, a plurality of swing rod type locking devices 3 are arranged, the plurality of swing rod type locking devices 3 are uniformly distributed around the outer circumference of the sealing bottom plate 1, the compression ring 2 is pressed to one side of the sealing bottom plate 1 when the wedge-shaped pressing blocks 301 of the plurality of swing rod type locking devices 3 simultaneously slide towards the direction of a rotating shaft of the storage box bottom 4 so as to achieve the effect of sealing and pressing the storage box bottom 4, and the upper sealing ring 103 seals a gap between the annular outer edge of the annular boss 101 and the inner diameter of a box opening of the storage box bottom 4; through a plurality of pendulum rod type locking device 3 that encircle along radial to circular side removal, extrude by taper fit, become the big displacement thrust of horizontal direction and be the big thrust of the little displacement of vertical direction, reach the sealed locking storage tank bottom of the case 4 and the purpose of bottom plate 1 of extrusion from top to bottom, treat to test storage tank bottom of the case 4 after sealed locking is accomplished, fill water or aerify in the sealed space between storage tank bottom of the case 4 and bottom plate 1, carry out the intensity test of suppressing or airtight test.
Further, the bottom of the seat frame 305 is fixedly connected with a sliding block 313, the sliding block 313 is slidably connected with a sliding rail 314, the sliding rail 314 is horizontally and radially laid, the bottom of the seat frame 305 is provided with a lock 315 for locking the displacement trend between the seat frame 305 and the sliding rail 314, and the inward end of the sliding rail 314 faces the rotating shaft of the tank bottom 4; the sliding rail 314 and the sliding block 313 are used for adjusting the radial position of the swing rod type locking device 3 when the storage tank bottoms 4 with different sizes are used, so that the invention can be suitable for pressure measurement, sealing and locking of the storage tank bottoms 4 with different sizes, and has better universal applicability.
Furthermore, 4-16 swing rod type locking devices 3 are arranged, the number of the swing rod type locking devices 3 is selected according to different pressure tests and the requirements of the storage box bottoms 4 of different sizes, and the average stress test with odd number of staggered and uniformly distributed better or the symmetrical balance test with even number of symmetrical and uniformly distributed better can be selected.
Further, an annular lower sealing groove 104 is arranged at the joint of the annular outer side wall of the annular boss 101 and the upper surface of the sealing bottom plate 1, the radial cross section of the lower sealing groove 104 is in an L shape, the L-shaped horizontal part of the lower sealing groove 104 is located in the upper surface of the sealing bottom plate 1, the L-shaped vertical part of the lower sealing groove 104 is located in the annular outer side surface of the annular boss 101, the outer diameter of the L-shaped horizontal part of the lower sealing groove 104 is not smaller than the outer diameter of a tank opening of the tank bottom 4 of the storage tank, the lower sealing groove 104 and the tank bottom 4 of the storage tank share a rotating shaft, a lower sealing ring 105 is arranged in the lower sealing groove 104, and the lower sealing groove 104 and the lower sealing ring 105 can be matched to better seal a gap between the sealing bottom plate 1 and the tank bottom 4, so that the requirement of higher sealing performance test can be met.
Furthermore, the cross section of the lower sealing ring 105 along the radial direction is L-shaped, and the L-shaped horizontal part of the lower sealing ring 105 is made of hard rubber; the horizontal part is mainly used for bearing the pressure of the lower edge of the opening of the storage box bottom 4 and the horizontal part of the edge of the upper surface of the sealing bottom plate 1, namely the downward pressing locking force of the compression ring 2 to the storage box bottom 4 through the edge step 401 after being pressed downwards under force, so that the hard rubber can provide better supporting force to the storage box bottom 4.
Furthermore, the inner part of the L-shaped vertical part of the lower sealing ring 105 is provided with an annular inflatable air bag 106, the vertical part is mainly used for sealing a gap between the inner wall of the tank opening of the tank bottom 4 and the annular outer side wall of the annular boss 101, better sealing performance is provided, the requirement of higher air tightness test in the tank bottom 4 is met, therefore, after the swing rod type locking device 3 locks the inner part of the box bottom 4 of the storage box to form a closed space by the inflating air bag 106, the inflatable air bag 106 is inflated, so that the outer wall of the sealing ring of the L-shaped vertical part of the lower sealing ring 105 is more closely attached to the inner wall of the tank opening of the tank bottom 4 of the storage tank and the annular outer side wall of the annular boss 101, and a certain pressure tension is provided, so that the inner cavity of the storage box bottom 4 can bear higher internal pressure without air leakage, the sealing effect is increased, the storage box bottom 4 can bear higher pressure test, and the pressure measurement standard is improved.
Further, one end of the upper surface of the seat frame 305, which is far away from the wedge-shaped pressing block 301, is fixedly connected with a bracket 316, the first hinge fulcrum 308 is located on the bracket 316, and the first hinge fulcrum 308 and the fourth hinge fulcrum 311 are located on the same horizontal plane; the first hinge point 308 and the fourth hinge point 311 on the same horizontal plane enable the swing rod 303 to swing to push the pull rod 302 to reach an optimal lever amplification point when the pull rod 302 is in a horizontal position, at the moment, the pull rod 302 is turned from inclining to being horizontal, the maximum pressure and the minimum displacement are provided for the wedge-shaped pressing block 301, so that the pressing ring 2 can press the edge step 401 of the storage tank bottom 4 conveniently, and better locking and sealing are provided for the buckling position of the storage tank bottom 4 and the sealing bottom plate 1.
Further, the distance from the first hinge point 308 to the second hinge point 309 is smaller than the distance from the first hinge point 308 to the third hinge point 310, the distance from the first hinge point 308 to the second hinge point 309 is linear, the distance from the first hinge point 308 to the third hinge point 310 is arc-shaped, the long rod has a better force amplification effect on the short rod in the lever action, and therefore, a larger thrust can be provided for the pull rod 302 through the swing rod 303, the long rod part is arc-shaped, the movement at the second hinge point 309 can be converted into horizontal linear movement as much as possible, and meanwhile, the arc-shaped part can play a better buffering and shock-buffering role on the impact vibration of the telescopic rod 304.
The invention also discloses a pressure measuring sealing locking method for the bottom of the oscillating bar type storage box, which uses the pressure measuring sealing locking device and comprises the following steps:
the method comprises the following steps: according to the size of the bottom 4 of the storage box which needs to be subjected to pressure measurement, sealing and locking, a plurality of seat frames 305 which are uniformly distributed around are moved to a pressing position, and a telescopic rod 304 is driven to contract, so that the wedge-shaped pressing block 301 is in an opening state of moving outwards along the radial direction;
step two: dropping the sealing bottom plate 1 into the upper surface of the seat frame 305 and prepositioning;
step three: an opening of the storage box bottom 4 is placed downwards on the sealing bottom plate 1, so that the inner diameter of a box opening of the storage box bottom 4 is sleeved and buckled on the annular outer side wall of the annular boss 101 from top to bottom;
step four: sleeving the compression ring 2 on an edge step 401 of the bottom 4 of the storage box from top to bottom;
step five: the telescopic rod 304 is driven to extend, so that the wedge-shaped pressing block 301 horizontally extends and radially moves inwards, the pressing ring 2 is extruded along the tapered inclined plane through the first taper 201 and the second taper 307 which are matched with each other, the pressing ring 2 is stressed to vertically move downwards, so that the opening surface of the bottom 4 of the storage box is tightly attached to the upper surface of the sealing bottom plate 1, and a closed space is formed inside the bottom 4 of the storage box;
step six: after a closed space is formed inside the storage tank bottom 4, the inflatable airbag 106 in the L-shaped vertical part of the lower sealing ring 105 is inflated, so that the inner side of the storage tank bottom 4 is tightly sealed, and the sealing effect is improved;
step seven: then, pressurizing the closed space inside the bottom 4 of the storage box, and then carrying out airtight hydraulic detection;
step eight: carrying out pressure relief after the airtight hydraulic detection is finished;
step nine: deflating the inflatable air bag 106 in the L-shaped vertical part of the lower sealing ring 105 after the pressure is relieved;
step ten: and unlocking the bottom 4 of the storage box after the air of the inflatable air bag 106 is deflated, wherein the unlocking action steps are in reverse order to the steps from the first step to the fifth step.
Further, in the above step, when the size of the storage tank bottom 4 is changed for testing, the position of each seat frame 305 is adjusted and locked along the slide rail 314 according to the different storage tank bottoms 4, and then the different sealing bottom plate 1, the pressing ring 2 and the lower sealing ring 105 are changed.
Examples
In this embodiment, when the pressure is to be measured on the bottom 4 of the storage tank, firstly, the 16 seat frames 305 uniformly distributed around the storage tank are moved to the compression position according to the size of the bottom 4 of the storage tank which needs to be subjected to pressure measurement, sealing and locking, and the telescopic rod 304 is driven to contract, so that the wedge-shaped pressing block 301 is in an open state moving outwards along the radial direction; then the sealing bottom plate 1 falls down and is placed on the upper surface of the seat frame 305 and is pre-positioned, so that the sealing bottom plate 1 is prevented from displacing on the seat frame 305 when the bottom 4 of the storage box falls down; thirdly, an opening of the bottom 4 of the storage tank is placed downwards on the sealing bottom plate 1, so that the inner diameter of a tank opening of the bottom 4 of the storage tank is sleeved and buckled on the annular outer side wall of the annular boss 101 from top to bottom, and the bottom of the bottom 4 of the storage tank is prevented from colliding or scratching the inner wall in the descending and setting process through the upper sealing ring 103; fourthly, the compression ring 2 is sleeved on the step 401 of the edge of the bottom 4 of the storage box from top to bottom, and the upper edge of the compression ring 2 and the lower edge of the sealing bottom plate 1 are respectively aligned with the upper surface and the lower surface of the notch of the arc-shaped groove 306 of the wedge-shaped pressing block 301; fifthly, the telescopic rod 304 is driven to extend, so that the wedge-shaped pressing block 301 horizontally extends and radially moves inwards, the pressing ring 2 is extruded along the tapered inclined plane through the first taper 201 and the second taper 307 which are matched with each other, the pressing ring 2 is stressed to vertically move downwards, so that the opening surface of the bottom 4 of the storage box is tightly attached to the upper surface of the sealing bottom plate 1, and a closed space is formed inside the bottom 4 of the storage box; sixthly, after a closed space is formed inside the storage tank bottom 4, the inflatable airbag 106 in the L-shaped vertical part of the lower sealing ring 105 is inflated, so that the inner side of the storage tank bottom 4 is tightly sealed, and the sealing effect is improved; seventhly, pressurizing the closed space inside the bottom 4 of the storage tank, then carrying out airtight hydraulic detection, filling water or inflating air in the sealed space between the bottom 4 of the storage tank and the bottom plate 1, and carrying out a pressurizing strength test or an airtight test; eighthly, carrying out pressure relief after the airtight hydraulic detection is finished; ninthly, deflating the inflatable air bag 106 in the L-shaped vertical part of the lower sealing ring 105 after pressure relief; tenth, the tank bottom 4 is unlocked after the deflation of the inflatable bladder 106 is completed, and the sequence of the unlocking steps is opposite to the locking steps.
In conclusion, the invention provides a swing rod type storage tank bottom pressure measurement sealing locking device and a locking method, the purpose of pressing and sealing and locking the storage tank bottom and a bottom plate up and down is achieved by horizontally extending a wedge-shaped pressing block in the swing rod type locking device to move inwards, and by taper fit extrusion, changing large displacement and small thrust in the horizontal direction into small displacement and large thrust in the vertical direction, the storage tank bottom and the bottom plate can be pressed and sealed and locked, after sealing and locking are completed, the storage tank bottom can be tested, and finally the storage tank bottom is sealed to carry out sealing and pressure measurement, thereby avoiding the problems that the sealing effect is difficult to control when the previous pressure measurement is used for sealing and locking, the sealing adjustment labor intensity is large, the workload is large, the working time is long, the time and labor are wasted, and the efficiency is low due to repeated continuous adjustment one by one, the invention has no need of manual adjustment, is simple, convenient and rapid to operate, is stable and reliable, and greatly improves the production efficiency, the maintenance and use cost is reduced, so the invention has wide application prospect.
It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a sealed locking device of pendulum rod type storage tank bottom pressure measurement which characterized in that includes: the device comprises a sealing bottom plate (1), a pressure ring (2) and a swing rod type locking device (3);
the sealing bottom plate (1) is in a wafer shape, an upward convex annular boss (101) is arranged at the edge of the upper surface of the sealing bottom plate (1), the inner diameter of an annular outer side wall of the annular boss (101) is equal to that of a box opening of the storage box bottom (4), an annular upper sealing groove (102) which is concave inwards along the radial direction is arranged at the upper part of the annular outer side wall of the annular boss (101), an annular upper sealing ring (103) is arranged in the upper sealing groove (102), and the sealing bottom plate (1), the annular boss (101), the upper sealing groove (102) and the storage box bottom (4) share a rotating shaft;
the compression ring (2) is in a circular ring shape, the outer diameter of the compression ring (2) is equal to that of the sealing bottom plate (1), the inner diameter of the compression ring (2) is smaller than the outer diameter of an edge step (401) of the bottom (4) of the storage box and larger than the spherical outer diameter of the bottom (4) of the storage box, and a first taper (201) with the thickness gradually reduced is radially and outwards arranged on the top surface of the compression ring (2);
the swing rod type locking device (3) comprises a wedge-shaped pressing block (301), a pull rod (302), a swing rod (303), a telescopic rod (304) and a seat frame (305), wherein the wedge-shaped pressing block (301) is horizontally provided with an inwards concave arc-shaped groove (306) towards one side of the bottom (4) of the storage box, the opening radian of the arc-shaped groove (306) is the same as the outer diameter radian of the edge step (401), the top surface of the arc-shaped groove (306) is provided with a second taper (307) with the height size of the notch gradually reduced along the direction from the notch to the bottom of the groove, the first taper (201) is matched with the second taper (307), the height of the vertical direction of the notch of the arc-shaped groove (306) is greater than the sum of the edge thickness of the pressing ring (2) and the edge thickness of the sealing bottom plate (1), the height of the vertical direction of the bottom of the arc-shaped groove (306) is smaller than the sum of the edge thickness of the pressing ring (2) and the edge thickness of the sealing bottom plate (1), the box body structure is characterized in that the pull rod (302) is a straight rod, the swing rod (303) is an arc-shaped rod, the upper surface of the seat frame (305) is horizontal, the middle section of the swing rod (303) is hinged and connected with the seat frame (305) through a first hinge fulcrum (308), one end of the swing rod (303) is hinged and connected with the pull rod (302) through a second hinge fulcrum (309), the other end of the swing rod (303) is hinged and connected with the telescopic end of the telescopic rod (304) through a third hinge fulcrum (310), one end of the pull rod (302) far away from the second hinge fulcrum (309) is hinged and connected with the wedge-shaped pressing block (301) through a fourth hinge fulcrum (311), the fixed end of the telescopic rod (304) is hinged and connected with the lower part of the seat frame (305) through a fifth hinge fulcrum (312), and when the telescopic rod (304) stretches, the swing rod (303) is driven to swing back and forth around the first hinge fulcrum (308) to drive one side of the arc-shaped storage groove (306) of the pull rod (302) to push and pull the wedge-push the wedge-pull-push the wedge-push-pull pressing block (301) towards the direction of the box bottom rotating shaft (4) in the direction of the box bottom of the box The upper surface of the seat frame (305) slides back and forth along the radial direction;
the utility model discloses a sealing device, including sealing plate (1), clamping ring (2), pendulum rod type locking device (3), sealing plate (3) are gone up the annular outer edge of sealed annular boss (101) and are followed the inside airtight space that forms in the bottom of the case (4) of storage tank after the bottom of the case (4) of lock storage tank, clamping ring (2) cover is established the withhold on border step (401), pendulum rod type locking device (3) are equipped with a plurality ofly, a plurality of pendulum rod type locking device (3) encircle the equipartition in the outer circumference of sealing plate (1), wedge briquetting (301) of a plurality of pendulum rod type locking device (3) press clamping ring (2) to sealing plate (1) one side when sliding to the rotation axis direction of bottom of the case (4) simultaneously in order to reach the sealed effect that compresses tightly bottom of the storage tank (4), go up the gap between the annular outer edge of sealed annular boss (101) of sealing ring (103) and the bottom of the storage tank (4) of the case internal diameter.
2. The swing rod type storage tank bottom pressure measuring sealing locking device is characterized in that a sliding block (313) is fixedly connected to the bottom of the seat frame (305), the sliding block (313) is slidably connected with a sliding rail (314), the sliding rail (314) is horizontally and radially laid, a lock catch (315) is arranged at the bottom of the seat frame (305) and used for locking the displacement trend between the seat frame (305) and the sliding rail (314), and the inward end of the sliding rail (314) faces the rotating shaft of the storage tank bottom (4).
3. The swing link type tank bottom pressure measuring sealing locking device according to claim 1, characterized in that 4 to 16 swing link type locking devices (3) are provided.
4. The swing rod type storage tank bottom pressure measuring sealing and locking device according to claim 1, wherein an annular lower sealing groove (104) is arranged at a joint of an annular outer side wall of the annular boss (101) and an upper surface of the sealing bottom plate (1), the cross section of the lower sealing groove (104) in the radial direction is L-shaped, an L-shaped horizontal part of the lower sealing groove (104) is located in the upper surface of the sealing bottom plate (1), an L-shaped vertical part of the lower sealing groove (104) is located in the annular outer side surface of the annular boss (101), the outer diameter of the L-shaped horizontal part of the lower sealing groove (104) is not smaller than the outer diameter of a tank opening of the storage tank bottom (4), the lower sealing groove (104) and the storage tank bottom (4) share a rotating shaft, and a lower sealing ring (105) is arranged in the lower sealing groove (104).
5. The swing stem type tank bottom pressure measuring sealing and locking device according to claim 4, characterized in that the cross section of the lower sealing ring (105) along the radial direction is L-shaped, and the L-shaped horizontal part of the lower sealing ring (105) is made of hard rubber.
6. The swing stem type tank bottom pressure measurement sealing and locking device according to claim 5, characterized in that an annular inflatable air bag (106) is arranged inside the L-shaped vertical part of the lower sealing ring (105).
7. The swing stem type storage box bottom pressure measuring sealing locking device according to claim 1, characterized in that a bracket (316) is fixedly connected to one end of the upper surface of the seat frame (305) far away from the wedge-shaped pressing block (301), the first hinge point (308) is located on the bracket (316), and the first hinge point (308) and the fourth hinge point (311) are located on the same horizontal plane.
8. The swing rod type storage box bottom pressure measuring sealing locking device according to claim 1, wherein the distance from the first hinge fulcrum (308) to the second hinge fulcrum (309) is smaller than the distance from the first hinge fulcrum (308) to the third hinge fulcrum (310), the distance from the first hinge fulcrum (308) to the second hinge fulcrum (309) is linear, and the distance from the first hinge fulcrum (308) to the third hinge fulcrum (310) is arc-shaped.
9. A pressure sealing and locking method for the bottom of a swing stem type storage tank, which is characterized in that the pressure sealing and locking device of any one of claims 1 to 8 is used in the method, and comprises the following steps:
the method comprises the following steps: according to the size of a storage box bottom (4) needing pressure measurement, sealing and locking, a plurality of seat frames (305) uniformly distributed in a surrounding mode are moved to a pressing position, a telescopic rod (304) is driven to contract, and a wedge-shaped pressing block (301) is in an opening state moving outwards in the radial direction;
step two: dropping the sealing bottom plate (1) into the upper surface of the seat frame (305) and pre-positioning;
step three: an opening of the storage box bottom (4) is placed downwards on the sealing bottom plate (1), so that the inner diameter of a box opening of the storage box bottom (4) is sleeved and buckled on the annular outer side wall of the annular boss (101) from top to bottom;
step four: sleeving a compression ring (2) on an edge step (401) of the bottom (4) of the storage box from top to bottom;
step five: the expansion rod (304) is driven to extend, so that the wedge-shaped pressing block (301) horizontally extends and radially moves inwards, the pressing ring (2) is extruded along the tapered inclined plane through a first taper (201) and a second taper (307) which are matched with each other, the pressing ring (2) is stressed to vertically move downwards, so that the opening surface of the bottom (4) of the storage box is tightly attached to the upper surface of the sealing bottom plate (1), and a closed space is formed inside the bottom (4) of the storage box;
step six: after a closed space is formed inside the storage box bottom (4), an inflatable airbag (106) in the L-shaped vertical part of the lower sealing ring (105) is inflated, so that the inner side of the storage box bottom (4) is tightly attached and sealed, and the sealing effect is improved;
step seven: then, pressurizing the closed space inside the tank bottom (4) of the storage tank, and then carrying out airtight hydraulic detection;
step eight: carrying out pressure relief after the airtight hydraulic detection is finished;
step nine: deflating an inflatable air bag (106) in the L-shaped vertical part of the lower sealing ring (105) after pressure relief;
step ten: and unlocking the bottom (4) of the storage box after the air of the inflatable air bag (106) is deflated, wherein the unlocking action steps are in reverse order to the steps from the first step to the fifth step.
10. The swing stem type pressure measuring, sealing and locking method for the bottom of the tank is characterized in that in the step, when the specification and the size of the tank bottom (4) are changed for testing, the position of each seat frame (305) is adjusted and locked along the sliding rail (314) according to different tank bottoms (4), and then different sealing bottom plates (1), pressing rings (2) and lower sealing rings (105) are changed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210761117.6A CN115077798A (en) | 2022-06-30 | 2022-06-30 | Pressure measuring sealing locking device and locking method for bottom of swing rod type storage box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210761117.6A CN115077798A (en) | 2022-06-30 | 2022-06-30 | Pressure measuring sealing locking device and locking method for bottom of swing rod type storage box |
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| CN115077798A true CN115077798A (en) | 2022-09-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210761117.6A Pending CN115077798A (en) | 2022-06-30 | 2022-06-30 | Pressure measuring sealing locking device and locking method for bottom of swing rod type storage box |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116296088A (en) * | 2023-04-10 | 2023-06-23 | 航成（天津）科技有限公司 | Rocket storage tank bottom sealing test device |
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| CN103603953A (en) * | 2013-11-28 | 2014-02-26 | 上海航天精密机械研究所 | Cabin-penetrating test sealing flange for low-temperature storage tank |
| CN203726060U (en) * | 2014-03-03 | 2014-07-23 | 首都航天机械公司 | Compressing device for tank bottom scalloped segment parts |
| CN214200518U (en) * | 2020-12-04 | 2021-09-14 | 凌云工业股份有限公司汽车零部件制造分公司 | New energy automobile battery case seeks leakage point tool equipment |
| CN217605199U (en) * | 2022-06-30 | 2022-10-18 | 北京九天行歌航天科技有限公司 | Pressure measuring, sealing and locking device for bottom of swing rod type storage box |
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- 2022-06-30 CN CN202210761117.6A patent/CN115077798A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103603953A (en) * | 2013-11-28 | 2014-02-26 | 上海航天精密机械研究所 | Cabin-penetrating test sealing flange for low-temperature storage tank |
| CN203726060U (en) * | 2014-03-03 | 2014-07-23 | 首都航天机械公司 | Compressing device for tank bottom scalloped segment parts |
| CN214200518U (en) * | 2020-12-04 | 2021-09-14 | 凌云工业股份有限公司汽车零部件制造分公司 | New energy automobile battery case seeks leakage point tool equipment |
| CN217605199U (en) * | 2022-06-30 | 2022-10-18 | 北京九天行歌航天科技有限公司 | Pressure measuring, sealing and locking device for bottom of swing rod type storage box |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN116296088A (en) * | 2023-04-10 | 2023-06-23 | 航成（天津）科技有限公司 | Rocket storage tank bottom sealing test device |
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