A locking device for rapid sealing of short-term microgravity fluid experimental models

Abstract

The present invention provides a locking device for rapid sealing of a short-time microgravity fluid experimental model, which includes a sealing mechanism, a ratchet locking mechanism and a trigger mechanism; the sealing mechanism is matched and installed at the top opening of the liquid pool model, and includes a sealing ring, a hoop and a liquid pool upper slide cover assembly; the liquid pool upper slide cover assembly closes the top opening of the liquid pool model while its bottom presses the sealing ring; when the top opening of the liquid pool model is not closed, the trigger mechanism drives the trigger connecting rod to connect with the liquid pool upper slide cover assembly and fix it; when the top opening of the liquid pool model is closed, the trigger mechanism drives the trigger connecting rod to disengage from the liquid pool upper slide cover assembly. The present invention can complete the rapid sealing of the liquid working medium model in a very short time, can quickly seal the liquid working medium, can resist strong impact force, has the advantages of fast response, good sealing, high stability, simple triggering, etc., and can be widely used in a variety of fluid physics models.

Description

Technical Field

[0001] The invention relates to the technical field of space experiment devices, and in particular to a locking device for rapid sealing of a short-time microgravity fluid experiment model. Background Art

[0002] In order to be able to observe the flow of fluid physics models more accurately, liquid working fluids are mostly unsealed open structures. When doing microgravity space experiments such as drop towers, rockets, and satellites, there is a process of rapid descent of the aircraft recovery, and this process is mostly impossible to intervene manually. And under microgravity conditions, surface tension will drive the liquid to climb, aggravating the spillage of liquid working fluids in the model, contaminating cameras, sensors, motors and other instruments that observe the fluid, and may even cause a short circuit in the control board. In order to be waterproof and oil-proof, a common practice is to add external protection design to the instruments and perform layer-by-layer verification, which not only increases the size and weight of the device, but also reduces the heat dissipation performance of the components, greatly increasing the cost of the experiment.

[0003] To sum up, it is necessary to make further innovations on existing technologies. Summary of the invention

[0004] In view of the technical problems existing in the above-mentioned background technology, the present invention proposes a locking device for the rapid sealing of a short-term microgravity fluid experimental model. The structure of the locking device is reasonable and compact, and the rapid sealing of the liquid working fluid model can be completed in a very short time. The liquid working fluid can be quickly sealed and can withstand strong impact force. It has the advantages of fast response, good sealing, high stability, simple triggering, etc., and can be widely used in various fluid physics models.

[0005] In order to solve the above technical problems, the present invention provides a locking device for rapid sealing of a short-term microgravity fluid experimental model, which includes a sealing mechanism, a ratchet locking mechanism and a trigger mechanism;

[0006] The sealing mechanism is matched and installed at the top opening of the liquid pool model, and comprises a sealing ring, a hoop and a liquid pool upper sliding cover assembly; the sealing ring is clamped by the hoop at the top opening of the liquid pool model; the liquid pool upper sliding cover assembly is matched and arranged at the top opening of the liquid pool model;

[0007] The upper part of the liquid pool upper slide cover assembly is matched with the ratchet locking mechanism and is driven by the ratchet locking mechanism to horizontally move along the top of the liquid pool model to close and open the top opening of the liquid pool model in a timely manner; and when the liquid pool upper slide cover assembly closes the top opening of the liquid pool model, its bottom is pressed against the sealing ring;

[0008] The trigger mechanism is matched and arranged on the lower side of one end of the liquid pool upper slide cover assembly, and its power output end is matched and connected with a trigger connecting rod and connected with the liquid pool upper slide cover assembly in a timely manner through the trigger connecting rod; when the top opening of the liquid pool model is not closed, the trigger mechanism drives the trigger connecting rod to connect with the liquid pool upper slide cover assembly and fix it; when the top opening of the liquid pool model is closed, the trigger mechanism drives the trigger connecting rod to disengage from the liquid pool upper slide cover assembly.

[0009] The locking device for rapid sealing of a short-term microgravity fluid experimental model, wherein: the liquid pool upper slide cover assembly includes a liquid pool upper cover slide, a liquid pool upper cover slide pressure plate and a liquid pool upper cover slide plate; one end of the liquid pool upper cover slide is fixedly installed on the top of the liquid pool model, and the trigger mechanism is matched and arranged at the lower part relative to the other end; a slide groove for horizontal displacement of the liquid pool upper cover slide is matched and opened on the inner side of the circumferential edge of the liquid pool upper cover slide; the liquid pool upper cover slide pressure plate is matched and fixedly installed on the upper part of the liquid pool upper cover slide; the circumferential edge of the liquid pool upper cover slide plate is slidably connected with the slide groove; a positioning hole is matched and opened in the middle part of one end of the liquid pool upper cover slide along the vertical direction.

[0010] The locking device for rapid sealing of a short-term microgravity fluid experimental model, wherein: the ratchet locking mechanism is matched and installed on the upper part of the liquid pool upper cover slide, and comprises a ratchet connecting rod shaft, a ratchet body and a crescent-shaped connecting rod;

[0011] The two ends of the ratchet connecting rod shaft are hinged to the upper part of the slideway pressure plate of the liquid pool upper cover through the bearing seat;

[0012] The ratchet body is fixed to the middle section of the ratchet connecting rod shaft, and a connecting rod hinge arm is provided on one side thereof, and a top block is provided on the other side thereof; when the liquid pool upper cover slide plate covers the top opening of the liquid pool model, the top is pressed tightly by the top block, and the bottom is pressed tightly against the sealing ring;

[0013] One end of the crescent-shaped connecting rod is hinged to one end of the slideway pressure plate of the upper cover of the liquid pool through a connecting rod short shaft, and the other end is matched and hinged to the connecting rod hinge arm;

[0014] Both ends of the connecting rod short shaft are matched with spring positioning pieces and are matched and connected with both ends of the ratchet connecting rod shaft through springs;

[0015] The spring is in a stretched state when the liquid pool cover slide does not cover the upper opening of the liquid pool model, and the spring retracts when the liquid pool cover slide covers the upper opening of the liquid pool model.

[0016] The locking device for rapid sealing of a short-term microgravity fluid experimental model, wherein: the trigger mechanism includes a fixing seat, a trigger device and a trigger connecting rod; the fixing seat is fixed to the lower part of the other end of the liquid pool upper cover slide; the trigger device adopts a motor and is invertedly installed at the lower part of the fixing seat, and its power output shaft extends upward and is vertically connected to the trigger connecting rod; the trigger connecting rod matches the positioning hole and can move up and down in the positioning hole under the drive of the trigger device.

[0017] The locking device for rapid sealing of a short-time microgravity fluid experimental model, wherein: the connecting rod hinged arm and the top block are vertically arranged in space.

[0018] The locking device for rapid sealing of a short-time microgravity fluid experimental model, wherein: the bearing seat is matched and fixed to the upper part of the slideway pressure plate of the liquid pool upper cover.

[0019] The locking device for rapid sealing of a short-term microgravity fluid experimental model, wherein: one end of the liquid pool cover slide is semicircular and the front edge is chamfered to facilitate faster sealing, and the upper part of the other end is matched with a connecting rod mounting seat for hingedly connecting the connecting rod short shaft.

[0020] By adopting the above technical solution, the present invention has the following beneficial effects:

[0021] The locking device for rapid sealing of a short-term microgravity fluid experimental model of the present invention has a reasonable and compact structural design, can complete rapid sealing of a liquid working medium model in a very short time, and can rapidly seal a liquid working medium such as silicone oil with a very small contact angle in a fluid physical model by designing a sealing mechanism and a ratchet locking mechanism, can resist strong impact forces, has the advantages of rapid response, good sealing, and simple structure, can realize the recycling and reuse of precision instruments, has high stability, is simple to trigger, does not require unnecessary changes to the model, and can be widely applied to a variety of fluid physical models.

[0022] The present invention can be used for sealing liquid working fluids in short-term microgravity fluid experiments, including liquids such as silicone oil with extremely small contact angles, to protect instruments and meters from contamination and achieve the effect of recycling and reuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1It is a structural schematic diagram of a locking device for rapid sealing of a short-time microgravity fluid experimental model according to the present invention;

[0025] Figure 2 It is a schematic structural diagram of the locking device for rapid sealing of a short-time microgravity fluid experimental model of the present invention in an unclosed state;

[0026] Figure 3 It is a cross-sectional view of the locking device for rapid sealing of a short-time microgravity fluid experimental model of the present invention in an unclosed state;

[0027] Figure 4 The invention is a locking device for rapid sealing of a short-time microgravity fluid experimental model. Figure 3 Schematic diagram of the enlarged structure of the middle B area;

[0028] Figure 5 It is a front view of the locking device used for rapid sealing of a short-time microgravity fluid experimental model of the present invention;

[0029] Figure 6 A top view of a locking device for rapid sealing of a short-time microgravity fluid experimental model according to the present invention;

[0030] Figure 7 The invention is a locking device for rapid sealing of a short-time microgravity fluid experimental model. Figure 6 AA section view.

[0031] Notes:

[0032] 1-sealing mechanism, 11-sealing ring, 12-hoop, 13-liquid pool upper slide assembly, 131-liquid pool upper cover slide, 132-liquid pool upper cover slide pressure plate, 1321-bearing seat, 133-liquid pool upper cover slide, 1331-positioning hole, 134-connecting rod mounting seat;

[0033] Ratchet locking mechanism 2, 21-ratchet connecting rod shaft, 22-ratchet body, 221-ratchet base, 222-connecting rod hinge arm, 223 top block, 23-crescent-shaped connecting rod, 2311-spring positioning member, 24-spring;

[0034] Trigger mechanism 3, 31-fixed seat, 32-trigger device, 33-trigger connecting rod;

[0035] 4-Liquid pool model. DETAILED DESCRIPTION

[0036] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0037] The present invention is further explained below in conjunction with specific implementation modes.

[0038] like Figure 1-7 As shown, the locking device provided in this embodiment for rapid sealing of a short-time microgravity fluid experimental model includes a sealing mechanism 1, a ratchet locking mechanism 2 and a trigger mechanism 3.

[0039] The sealing mechanism 1 is matched and installed at the top opening of a liquid pool model 4 for containing liquid experimental working medium, and comprises a sealing ring 11, a hoop 12 and a liquid pool upper sliding cover assembly 13.

[0040] The sealing ring 11 is matched and arranged at the upper opening of the liquid pool model 4 and a hoop 12 is matched and fitted on the outer circumference thereof; the sealing ring 11 is clamped on the upper part of the liquid pool model 4 by the hoop 12 .

[0041] The liquid pool upper slide cover assembly 13 is matched and installed on the upper part of the liquid pool model 4, and includes a liquid pool upper cover slide 131, a liquid pool upper cover slide pressure plate 132 and a liquid pool upper cover slide plate 133; one end of the liquid pool upper cover slide 131 is fixedly installed on the top of the liquid pool model 4 by fasteners, and a trigger mechanism 3 is matched and arranged at the lower part relative to the other end; a slide groove for sliding displacement of the liquid pool upper cover slide plate 133 is matched and arranged on the inner side of the circumferential edge of the liquid pool upper cover slide 131; the liquid pool upper cover slide pressure plate 132 is matched and fixedly installed on the upper part of the liquid pool upper cover slide 131 by fasteners, and a pair of bearing seats 1321 are matched and fixedly arranged on the opposite sides of the upper part of the middle section. The circumferential edge of the liquid pool cover slide 133 is slidably connected with the slide groove of the circumferential edge of the liquid pool cover slide 131; one end of the liquid pool cover slide 133 is semicircular and the front edge is chamfered to facilitate faster sealing, and a connecting rod mounting seat 134 is matched at the upper part of the other end; at the same time, the liquid pool cover slide 133 is also matched with a positioning hole 1331 in the middle of one end close to the connecting rod mounting seat 134 along the vertical direction.

[0042] The ratchet locking mechanism 2 is matched and installed on the upper part of the liquid pool upper cover slide 133 of the liquid pool upper slide cover assembly 13, and includes a ratchet connecting rod shaft 21, a ratchet body 22, a crescent-shaped connecting rod 23 and a spring 24. The two ends of the ratchet connecting rod shaft 21 are respectively matched and hinged with a pair of bearing seats 1321 fixed on the liquid pool upper cover slideway pressure plate 132. The ratchet body 22 is an integrated structure, which consists of a ratchet base 221 fixedly sleeved on the middle section of the ratchet connecting rod shaft 21, a connecting rod hinge arm 222 connected to one side of the ratchet base 221, and a top block 223 connected to the other side of the ratchet base 221; the connecting rod hinge arm 222 and the top block 223 are arranged vertically in space relative to the ratchet base 221. One end of the crescent-shaped connecting rod 23 is hinged to the connecting rod mounting seat 134 through a connecting rod short shaft 231, and the other end is hinged to the connecting rod hinge arm 222 through a pin shaft; both ends of the connecting rod short shaft 231 extend horizontally to the outside of the connecting rod mounting seat 134, and one side of the extended end is matched with a spring positioning piece 2311. The spring positioning pieces 2311 at both ends of the connecting rod short shaft 231 are matched and connected with both ends of the ratchet connecting rod shaft 21 through springs 24.

[0043] When the liquid pool upper cover slide 133 of the liquid pool upper slide cover assembly 13 is closed at the open opening on the upper part of the liquid pool model 4, the ratchet body 22 and the crescent-shaped connecting rod 23 are in the minimum retracted state, and the bottom of the liquid pool upper cover slide 133 is pressed against the sealing ring 11 to ensure that the liquid in the liquid pool model 4 no longer flows out; when the liquid pool upper cover slide 133 of the liquid pool upper slide cover assembly 13 is opened, the ratchet body 22 and the crescent-shaped connecting rod 23 are in a stretched state.

[0044] The trigger mechanism 3 is used to trigger the movement of the liquid pool upper slide assembly 13 of the sealing mechanism 1, and includes a fixed seat 31, a trigger device 32 and a trigger connecting rod 33. Among them, the fixed seat 31 is matched and fixed to the lower part of the other end of the liquid pool upper cover slideway 131 of the liquid pool upper slide assembly 13; the trigger device 32 adopts a motor and is invertedly installed at the lower part of the fixed seat 31, and its power output shaft extends upward and is vertically connected with a trigger connecting rod 33, and the trigger connecting rod 33 matches the positioning hole 1331 opened on the liquid pool upper cover slide plate 133 of the sealing mechanism 1 and can move and shuttle in the positioning hole 1331; provide a switch signal to the motor, and the trigger connecting rod 33 can realize up and down displacement under the drive of the motor; when the liquid pool upper cover slide plate 133 is not closed at the open position of the upper part of the liquid pool model 4, the trigger connecting rod 33 moves through the positioning hole 1331 on the liquid pool upper cover slide plate 133 under the drive of the motor. After the trigger device 32 is powered off, the trigger link 33 returns to the top and passes through the positioning hole 1331 to fix the liquid pool upper cover slide plate 133 again to prevent it from loosening.

[0045] The working principle of the locking device for rapid sealing of a short-term microgravity fluid experimental model of the present invention is as follows:

[0046] (1) During the experiment, when the liquid pool cover slide plate 133 is not closed at the open portion of the upper portion of the liquid pool model 4, Figure 2 As shown, the ratchet body 22 and the crescent-shaped connecting rod 23 of the ratchet locking mechanism 2 are in the maximum extension state, the liquid pool cover slide plate 133 does not cover the upper opening of the liquid pool model 4, the spring 24 is in the extension state, the trigger device 32 is in the power-off state at this time, the trigger connecting rod 33 is at the top and passes through the locking hole 1331 to lock the liquid pool cover slide plate 133;

[0047] (2) After the experiment, when the liquid pool cover slide plate 133 is closed at the open portion of the upper portion of the liquid pool model 4, Figure 1 As shown, a voltage pulse signal is applied to the trigger device 32, so that the trigger device 32 is energized and drives the trigger link 33 to retract, and the spring 24 recovers its elasticity and shrinks, driving the ratchet locking mechanism 2 to return to the retracted state, and the liquid pool cover slide plate 133 slides along the slide groove of the liquid pool cover slide 131 to under the hoop 12 and is compressed; the ratchet body 22 rotates, so that the front end of the top block 223 abuts against the upper part of the liquid pool cover slide plate 133, which plays a thrust role, and the spring 24 is tightened at this time.

[0048] The structural design of the present invention is reasonable and compact, and can complete the rapid sealing of the liquid working fluid model in a very short time, can quickly seal the liquid working fluid, can resist strong impact force, has the advantages of fast response, good sealing, high stability, simple triggering, etc., and can be widely used in various fluid physical models.

[0049] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A locking device for rapid sealing of a short-term microgravity fluid experimental model, characterized in that : The locking device comprises a sealing mechanism (1), a ratchet locking mechanism (2) and a trigger mechanism (3); The sealing mechanism (1) is matched and installed at the top opening of the liquid pool model (4), and comprises a sealing ring (11), a hoop (12) and a liquid pool upper sliding cover assembly (13); the sealing ring (11) is clamped at the top opening of the liquid pool model (4) by the hoop (12); the liquid pool upper sliding cover assembly (13) is matched and installed at the top opening of the liquid pool model (4); The upper portion of the liquid pool upper slide cover assembly (13) is matched with the ratchet locking mechanism (2) and is driven by the ratchet locking mechanism (2) to horizontally move along the top of the liquid pool model (4) so ​​as to close and open the top opening of the liquid pool model (4) in a timely manner; and while the liquid pool upper slide cover assembly (13) closes the top opening of the liquid pool model (4), its bottom is pressed against the sealing ring (11); The trigger mechanism (3) is matched and arranged on the lower side of one end of the liquid pool upper slide cover assembly (13), and its power output end is matched and connected with a trigger connecting rod (33) and is timely connected to the liquid pool upper slide cover assembly (13) through the trigger connecting rod (33); when the top opening of the liquid pool model (4) is not closed, the trigger mechanism (3) drives the trigger connecting rod (33) to connect with the liquid pool upper slide cover assembly (13) and fix it; when the top opening of the liquid pool model (4) is closed, the trigger mechanism (3) drives the trigger connecting rod (33) to separate from the liquid pool upper slide cover assembly (13).

2. The locking device for rapid sealing of a short-term microgravity fluid experimental model according to claim 1, characterized in that : The liquid pool upper slide cover assembly (13) comprises a liquid pool upper cover slideway (131), a liquid pool upper cover slideway pressure plate (132) and a liquid pool upper cover slide plate (133); One end of the liquid pool cover slideway (131) is fixedly mounted on the top of the liquid pool model (4), and the trigger mechanism (3) is matched and arranged at the lower part of the other end; a slide groove for horizontal displacement of the liquid pool cover slide plate (133) is matched and arranged on the inner side of the circumferential edge of the liquid pool cover slideway (131); The liquid pool upper cover slideway pressure plate (132) is matched and fixedly installed on the upper part of the liquid pool upper cover slideway (131); The circumferential edge of the liquid pool cover slide plate (133) is slidably connected with the slide groove; a locking hole (1331) is provided in the middle of one end of the liquid pool cover slide plate (133) in a matching and penetrating manner along the vertical direction.

3. The locking device for rapid sealing of a short-term microgravity fluid experimental model according to claim 2, characterized in that: The ratchet locking mechanism (2) is matched and mounted on the upper part of the liquid pool upper cover slide plate (133), and comprises a ratchet connecting rod shaft (21), a ratchet body (22) and a crescent-shaped connecting rod (23); Both ends of the ratchet connecting rod shaft (21) are hinged to the upper part of the liquid pool upper cover slideway pressure plate (132) through a bearing seat (1321); The ratchet body (22) is fixed to the middle section of the ratchet connecting rod shaft (21), and is provided with a connecting rod hinge arm (222) on one side and a top block (223) on the other side; when the liquid pool upper cover slide plate (133) covers the top opening of the liquid pool model (4), the top is pressed tightly by the top block (223) and the bottom is pressed tightly against the sealing ring (11); One end of the crescent-shaped connecting rod (23) is hinged to one end of the liquid pool upper cover slideway pressure plate (132) through a connecting rod short shaft (231), and the other end is matched and hinged to the connecting rod hinge arm (222); Both ends of the connecting rod short shaft (231) are matched with spring positioning pieces (2311) and are matched and connected with both ends of the ratchet connecting rod shaft (21) through springs (24); The spring (24) is in a stretched state when the liquid pool cover slide plate (133) does not cover the upper opening of the liquid pool model (4), and the spring (24) is retracted when the liquid pool cover slide plate (133) covers the upper opening of the liquid pool model (4).

4. The locking device for rapid sealing of a short-term microgravity fluid experimental model according to claim 3, characterized in that: The trigger mechanism (3) comprises a fixing seat (31), a trigger device (32) and a trigger connecting rod (33); The fixing seat (31) is fixed to the lower part of the other end of the liquid pool upper cover slideway (131); The trigger device (32) adopts a motor and is invertedly installed at the lower part of the fixing seat (31), and its power output shaft extends upward and is vertically connected to the trigger connecting rod (33); The trigger connecting rod (33) matches the locking hole (1331) and can move up and down in the locking hole (1331) under the drive of the trigger device (32).

5. The locking device for rapid sealing of a short-term microgravity fluid experimental model according to claim 3, characterized in that: The connecting rod hinge arm (222) and the top block (223) are vertically arranged in space.

6. The locking device for rapid sealing of a short-term microgravity fluid experimental model according to claim 3, characterized in that: The bearing seat (1321) is matched and fixed to the upper part of the slideway pressure plate (132) of the liquid pool upper cover.

7. The locking device for rapid sealing of a short-term microgravity fluid experimental model according to claim 3, characterized in that: One end of the liquid pool cover slide plate (133) is semicircular and has a chamfered front edge for faster sealing, and a connecting rod mounting seat (134) for hingedly connecting the connecting rod short shaft (231) is matched with the upper portion of the other end.

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