CN110554212B - Low-temperature sealing and closing device and method for ring of sensitive component of angular accelerometer - Google Patents
Low-temperature sealing and closing device and method for ring of sensitive component of angular accelerometer Download PDFInfo
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- CN110554212B CN110554212B CN201910796562.4A CN201910796562A CN110554212B CN 110554212 B CN110554212 B CN 110554212B CN 201910796562 A CN201910796562 A CN 201910796562A CN 110554212 B CN110554212 B CN 110554212B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/0802—Details
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Abstract
The invention provides a low-temperature sealing closing device and a low-temperature sealing closing method for a ring of a sensitive component of an angular accelerometer, and the device comprises a hollow cavity body, a ring mounting plate, a crimping cover plate and a low-temperature cooling unit, wherein the hollow cavity body is provided with a containing cavity, the ring mounting plate is fixedly arranged on one side of the hollow cavity body, when the ring of the sensitive component is arranged in a mounting groove of the ring mounting plate, the liquid level in a working liquid compensator is kept in a horizontal state, the crimping cover plate is provided with a slotted hole and is used for fixedly arranging the ring of the sensitive component on the ring mounting plate, when the crimping cover plate is fixedly arranged on the ring mounting plate, a working liquid injection pipe extends out of the crimping cover plate through the slotted hole, the low-temperature cooling unit is arranged in the containing cavity, and the low. By applying the technical scheme of the invention, the technical problems of easy cracking and poor safety in sealing the liquid inlet of the ring of the sensitive component in the prior art are solved.
Description
Technical Field
The invention relates to the technical field of angular accelerometers, in particular to a device and a method for sealing and closing a ring of a sensitive component of an angular accelerometer at a low temperature.
Background
The molecular electronic type angular accelerometer is used for measuring angular acceleration signals of a carrier relative to a corresponding axis, the working principle of the molecular electronic type angular accelerometer is that charges at an interface between an electrokinetic transducer and liquid are transferred to form potential difference by utilizing the flowing of working liquid in a sensitive assembly of the molecular electronic type angular accelerometer, and the potential difference at two ends of the electrokinetic transducer is measured through electrodes, so that electric signals corresponding to external angular acceleration signals are directly obtained.
The ring of the sensitive component is fixedly connected with a structure body to be measured through the shell, and meanwhile, the ring of the sensitive component is internally loaded with working liquid and is one of key components of the molecular electronic type angular accelerometer. The molecular electronic type angular accelerometer is used for ensuring stable and reliable work in the actual engineering environment. After the working liquid is filled into the sensitive component ring, the high-temperature flame is needed to seal the working liquid filling opening of the sensitive component ring, so that the working liquid in the sensitive component ring is ensured to be in a closed system. However, in the prior art, since the working liquid inside the ring of the sensitive component is flammable, when the ring working liquid inlet is sealed and connected at normal temperature, the liquid inlet is heated by using a special light gun, and at the moment, the ring of the sensitive component is easily cracked due to high temperature, so that the safety is poor.
Disclosure of Invention
The invention provides a low-temperature sealing and closing device and method for a ring of a sensitive component of an angular accelerometer, which can solve the technical problems of easy cracking and poor safety in sealing of a liquid inlet of the ring of the sensitive component in the prior art.
According to an aspect of the present invention, there is provided a low-temperature sealing and necking device for a ring of a sensing assembly of an angular accelerometer, the ring of the sensing assembly of the angular accelerometer includes a ring body, a working liquid compensator and a working liquid injection tube, the low-temperature sealing and necking device includes: the hollow cavity body is provided with an accommodating cavity and is placed on the horizontal table top; the ring mounting plate is fixedly arranged on one side of the hollow cavity body and is provided with a mounting groove matched with the structures of the ring body and the working liquid compensator, and when the accelerometer sensitive assembly ring is arranged in the mounting groove of the ring mounting plate, the liquid level in the working liquid compensator is kept in a horizontal state; the pressure welding cover plate is detachably arranged on the ring mounting plate and is provided with a slotted hole, the pressure welding cover plate is used for fixedly arranging the accelerometer sensitive assembly ring on the ring mounting plate, and when the pressure welding cover plate is fixedly arranged on the ring mounting plate, the working liquid injection pipe extends out of the pressure welding cover plate through the slotted hole; the low-temperature cooling unit is arranged in the accommodating cavity and used for cooling the environment temperature where the ring of the accelerometer sensitive assembly is located.
Further, the crimping cover plate comprises a first crimping cover plate and a second crimping cover plate, the slotted hole is formed in the first crimping cover plate, and the first crimping cover plate and the second crimping cover plate act together to fixedly arrange the crimping cover plate on the ring installation plate.
Furthermore, the low-temperature sealing closing-in device further comprises a sensing unit, the sensing unit is arranged in the hollow cavity body, and the sensing unit is used for detecting the environmental temperature of the ring of the accelerometer sensitive component in real time.
Furthermore, the low-temperature sealing-in closing-in device also comprises a control unit, the control unit is respectively connected with the sensing unit and the low-temperature cooling unit, and the control unit is used for controlling the low-temperature cooling unit according to the environmental temperature fed back by the sensing unit so as to keep the environmental temperature of the ring of the sensitive component of the accelerometer within a set temperature range.
Furthermore, the low-temperature sealing closing-in device further comprises a sealing cover plate, the sealing cover plate is arranged on the other side of the hollow cavity body, and the sealing cover plate is used for sealing the hollow cavity body so as to improve the cooling performance of the low-temperature cooling unit.
Further, the hollow cavity body, the ring mounting plate, the crimping cover plate and the sealing cover plate are all made of aluminum alloy.
Further, the hollow cavity body and the ring mounting plate are integrally manufactured.
Furthermore, the ring low-temperature sealing closing-in device further comprises a first sealing element and a second sealing element, the first sealing element is arranged between the hollow cavity body and the closed cover plate, and the second sealing element is arranged between the ring mounting plate and the crimping cover plate.
According to the invention, the method for sealing and closing the sensitive assembly ring of the angular accelerometer at the low temperature is provided.
Further, the method for sealing and closing the ring of the sensitive component of the angular accelerometer at low temperature comprises the following steps: placing the hollow cavity body on a horizontal table surface, and placing a ring of the angular accelerometer sensitive component to be sealed in a mounting groove of a ring mounting plate at one side of the hollow cavity body; fixedly arranging a crimping cover plate on the ring mounting plate, and extending a working liquid injection pipe of the ring of the sensitive assembly of the angular accelerometer out of the crimping cover plate through a slotted hole in the crimping cover plate; placing the low-temperature cooling unit in an accommodating cavity of the hollow cavity body, and reducing the working temperature of the ring of the sensitive component of the angular accelerometer to a set temperature range; and (4) carrying out high-temperature sealing closing on the working liquid injection pipe of the angular accelerometer sensitive assembly ring by using a sealing tool.
By applying the technical scheme of the invention, the low-temperature sealing-in closing device for the ring of the sensitive component of the angular accelerometer is provided, the low-temperature sealing-in closing device realizes the installation of the ring of the sensitive component of the accelerometer through the ring installation plate, and meanwhile, the installation groove on the ring installation plate ensures that the liquid level in the working liquid compensator is kept in a horizontal state, so that the liquid level close to the flame sealing position caused by the inclination of the liquid level can be avoided, and the operation safety is provided; in addition, through setting up the low temperature cooling unit in the intracavity that holds of cavity body, the low temperature cooling unit effect is in low temperature environment in order to make the sensitive subassembly ring of accelerometer be in, under this kind of low temperature environment, utilize expend with heat and contract with cold effect, liquid in the working liquid compensator is by the cold shrink, thereby make the liquid level descend, guarantee that the working liquid level keeps away from flame and seal the department, moreover, under low temperature environment, working liquid is difficult for burning, thereby liquid burning possibility has been reduced, sensitive subassembly ring has been avoided exploding, the security of low temperature sealing-in binding off has been improved. In the present invention, the ambient temperature at which the accelerometer sensing assembly loops are located typically needs to be reduced to below 10 ℃.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic structural diagram illustrating a ring low-temperature sealing and necking device of a sensitive component of an angular accelerometer according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram illustrating a ring low-temperature sealing-in and necking-out device of a sensing assembly of an angular accelerometer, which is not provided with a sealing cover plate, according to an embodiment of the invention;
figure 3 illustrates a top view of a ring of sensitive components of an angular accelerometer, provided in accordance with a specific embodiment of the present invention;
figure 4 shows a side view of the annular ring of the angular accelerometer sensitive assembly provided in figure 3.
Wherein the figures include the following reference numerals:
10. a hollow cavity body; 10a, an accommodating cavity; 20. crimping the cover plate; 20a, a slot; 21. a first crimp cover plate; 22. a second crimp cover plate; 30. locking the screw; 100. an angular accelerometer sensitive component loop; 110. a ring body; 120. a working fluid compensator; 130. and a working liquid injection pipe.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. 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.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 and 2, according to an embodiment of the present invention, there is provided a low-temperature sealing-in closing device for a sensing component ring of an angular accelerometer, the sensing component ring 100 of an angular accelerometer includes a ring body 110, a working fluid compensator 120 and a working fluid injection tube 130, the low-temperature sealing-in closing device includes a hollow cavity body 10, a ring mounting plate, a crimping cover plate 20 and a low-temperature cooling unit, the hollow cavity body 10 has a receiving cavity 10a, the hollow cavity body 10 is placed on a horizontal table, the ring mounting plate is fixedly disposed at one side of the hollow cavity body 10, the ring mounting plate has a mounting groove adapted to the structures of the ring body and the working fluid compensator, when the sensing component ring of the accelerometer is disposed in the mounting groove of the ring mounting plate, the fluid level in the working fluid compensator is kept horizontal, the crimping cover plate 20 is detachably disposed on the ring mounting plate, the crimping cover plate 20 is provided with a slotted hole 20a, the crimping cover plate 20 is used for fixedly arranging the accelerometer sensitive assembly ring on the ring mounting plate, when the crimping cover plate 20 is fixedly arranged on the ring mounting plate, the working liquid injection pipe extends out of the crimping cover plate 20 through the slotted hole 20a, the low-temperature cooling unit is arranged in the accommodating cavity 10a, and the low-temperature cooling unit is used for cooling the ambient temperature of the accelerometer sensitive assembly ring.
By applying the configuration mode, the low-temperature sealing-in closing device for the ring of the sensitive component of the angular accelerometer is provided, the mounting of the ring of the sensitive component of the accelerometer is realized through the ring mounting plate, and meanwhile, the mounting groove on the ring mounting plate ensures that the liquid level in the working liquid compensator is kept in a horizontal state; in addition, through setting up the low temperature cooling unit in the intracavity that holds of cavity body, the low temperature cooling unit effect is in low temperature environment in order to make the sensitive subassembly ring of accelerometer be in, under this kind of low temperature environment, utilize expend with heat and contract with cold effect, liquid in the working liquid compensator is by the cold shrink, thereby make the liquid level descend, guarantee that the working liquid level keeps away from flame and seal the department, moreover, under low temperature environment, working liquid is difficult for burning, thereby liquid burning possibility has been reduced, sensitive subassembly ring has been avoided exploding, the security of low temperature sealing-in binding off has been improved. In the present invention, the ambient temperature at which the accelerometer sensing assembly loops are located typically needs to be reduced to below 10 ℃.
Further, in the present invention, in order to facilitate the installation of the crimp cover, the crimp cover 20 may be configured to include a first crimp cover 21 and a second crimp cover 22, the slot 20a being provided on the first crimp cover 21, the first crimp cover 21 and the second crimp cover 22 cooperating to fixedly arrange the crimp cover 20 on the loop mounting plate.
In this configuration, the special structure of the accelerometer sensitive component ring is considered, and the processing error of the crimping cover plate is considered, the crimping cover plate is divided into a first crimping cover plate and a second crimping cover plate which are arranged up and down, when the device is installed, the second crimping cover plate is installed firstly, the second crimping cover plate only fixes the ring body 110 and the working fluid compensator 120, the slot is formed in the first crimping cover plate, after the accelerometer sensitive component ring is partially fixed, the first crimping cover plate can be installed, because the working fluid injection pipe 130 needs to extend out of the slot, the first crimping cover plate needs to be operated slowly, so that after the working fluid injection pipe extends out of the slot, the first crimping cover plate is fixedly arranged on the ring installation plate.
Further, in the present invention, in consideration of the actual processing technology and cost, the ring mounting plate and the hollow cavity body 10 may be integrally formed, so that the complexity of the low-temperature sealing closing device can be reduced, and the processing precision can be improved. Alternatively, the ring mounting plate and the hollow cavity body may be separately manufactured, and after the manufacturing, the ring mounting plate may be fixedly disposed at one side of the hollow cavity body 10 by mounting screws or the like.
As an embodiment of the present invention, as shown in fig. 3 and 4, according to the specific structure of the accelerometer sensing assembly ring, an included angle is formed between the working fluid compensator 120 and the ring body 110, when the accelerometer sensing assembly ring is installed on the ring installation plate, if the installation groove on the ring installation plate is parallel to the ring body 110, the ring installation plate needs to be arranged at an included angle with the horizontal plane to ensure that the fluid level of the working fluid compensator 120 is in a horizontal state. The setting of the angle between the ring mounting plate and the horizontal plane ensures that the liquid level of the working liquid compensator 120 is always in a horizontal state.
Further, in the present invention, in order to obtain the working temperature of the ring of the sensitive component of the angular accelerometer in real time, the low-temperature sealing and closing device may be configured to further include a sensing unit, the sensing unit is disposed in the hollow cavity body 10, and the sensing unit is used for monitoring the ambient temperature of the ring of the sensitive component of the accelerometer in real time.
In addition, after the environmental temperature of the ring of the sensitive assembly of the accelerometer is acquired in real time, in order to ensure that the ring of the sensitive assembly of the accelerometer is always in the set temperature range, the low-temperature sealing and closing device can be configured to further comprise a control unit, the control unit is respectively connected with the sensing unit and the low-temperature cooling unit, and the control unit is used for controlling the low-temperature cooling unit according to the environmental temperature fed back by the sensing unit so as to keep the environmental temperature of the ring of the sensitive assembly of the accelerometer in the set temperature range. In the present invention, the set temperature range means 10 ℃ or less.
Under the configuration mode, the control unit is arranged and is respectively connected with the sensing unit and the low-temperature cooling unit, the sensing unit acquires the ambient temperature of the accelerometer sensitive assembly ring in real time and transmits the acquired ambient temperature to the control unit, and when the control unit detects that the ambient temperature of the accelerometer sensitive assembly ring is higher than a set threshold value, the working efficiency of the low-temperature cooling device can be improved, so that the ambient temperature of the accelerometer sensitive assembly ring is always kept in a set temperature range. As a specific embodiment of the invention, the low-temperature cooling device comprises a tubular cooler, a plate cooler or an air-cooled cooler, and as other embodiments of the invention, ice blocks can also be used as the low-temperature cooling unit in consideration of the simplicity of operation, and when the sensing unit detects that the ambient temperature of the accelerometer sensitive assembly ring is higher than the set threshold value, the ambient temperature of the accelerometer sensitive assembly ring is always kept in the set temperature range by increasing the number of the ice blocks.
Further, in the present invention, in order to prevent the external hot air from reducing the working efficiency of the low-temperature cooling unit in the accommodating cavity 10a, the low-temperature sealing closing-in device may be configured to further include a sealing cover plate, the sealing cover plate is disposed on the other side of the hollow cavity body 10, and the sealing cover plate is used for sealing the hollow cavity body to improve the cooling performance of the low-temperature cooling unit. As another embodiment of the present invention, if the cooling power of the low-temperature cooling unit is high, the closing cover plate may not be provided.
Further, in the present invention, in order to improve the temperature conductivity, the hollow cavity body 10, the collar mounting plate, the crimp cover plate 20, and the closure cover plate may be configured to be made of an aluminum alloy. By applying the configuration mode, the low-temperature cooling unit is arranged in the accommodating cavity 10a of the hollow cavity body 10, and the low temperature in the accommodating cavity 10a can be transferred to the mounting groove on the ring mounting plate through the temperature conduction performance of the metal material, so that the low temperature performance of the ring working environment of the sensitive component of the angular accelerometer is realized.
Further, in the present invention, in order to further improve the low temperature property of the operating temperature of the ring of the sensitive component of the angular accelerometer, and prevent external high temperature gas from entering the low temperature sealing and closing device, the ring low temperature sealing and closing device may be configured to further include a first sealing member and a second sealing member, the first sealing member is disposed between the hollow cavity body and the closing cover plate, and the second sealing member is disposed between the ring mounting plate and the crimping cover plate 20. As a specific embodiment of the present invention, the first sealing member and the second sealing member each include a sealing rubber ring.
According to another aspect of the invention, a low-temperature sealing and closing-in method for a sensing assembly ring of a angular accelerometer is provided, and the low-temperature sealing and closing-in method for the sensing assembly ring of the angular accelerometer uses the low-temperature sealing and closing-in device for the sensing assembly ring of the angular accelerometer. Specifically, the low-temperature sealing and closing method for the ring of the sensitive component of the angular accelerometer comprises the following steps: placing the hollow cavity body 10 on a horizontal table surface, and placing a ring of the angular accelerometer sensitive component to be sealed in a mounting groove of a ring mounting plate at one side of the hollow cavity body 10; fixedly arranging a crimping cover plate 20 on the ring mounting plate, wherein a working liquid injection pipe of the angular accelerometer sensitive assembly ring extends out of the crimping cover plate 20 through a slotted hole 20a on the crimping cover plate 20; placing a low-temperature cooling unit in the accommodating cavity 10a of the hollow cavity body 10, and reducing the working temperature of the ring of the angular accelerometer sensitive component to a set temperature range; and (4) carrying out high-temperature sealing closing on the working liquid injection pipe of the angular accelerometer sensitive assembly ring by using a sealing tool.
By applying the configuration mode, the low-temperature sealing and closing method for the ring of the sensitive component of the angular accelerometer is provided, the installation of the ring of the sensitive component of the accelerometer is realized through the ring installation plate, and meanwhile, the installation groove on the ring installation plate ensures that the liquid level in the working liquid compensator is kept in a horizontal state; in addition, through setting up the low temperature cooling unit in the intracavity that holds of cavity body, the low temperature cooling unit effect is in low temperature environment in order to make the sensitive subassembly ring of accelerometer be in, under this kind of low temperature environment, utilize expend with heat and contract with cold effect, liquid in the working liquid compensator is by the cold shrink, thereby make the liquid level descend, guarantee that the working liquid level keeps away from flame and seal the department, moreover, under low temperature environment, working liquid is difficult for burning, thereby liquid burning possibility has been reduced, sensitive subassembly ring has been avoided exploding, the security of low temperature sealing-in binding off has been improved. As a specific embodiment of the present invention, the sealing tool includes a special light gun.
For further understanding of the present invention, the ring low temperature sealing and necking device and method for sensitive module of angular accelerometer of the present invention will be described in detail with reference to fig. 1 and 2.
As shown in fig. 1 and fig. 2, according to an embodiment of the present invention, a low-temperature sealing and closing device for a ring of a sensitive component of a molecular electronic type angular accelerometer is provided, the low-temperature sealing and closing device is made of an aluminum alloy metal material, and adopts a split structure, so that the ring of the sensitive component, which needs to be sealed and closed, can be pressed on the device through a pressing plate. An ice bag is placed in a hollow cavity inside the low-temperature sealing and closing device, and the ring of the sensitive component mounted on the ice bag is cooled through the temperature conduction characteristic of the metal device, so that the low-temperature sealing of the ring of the sensitive component of the molecular electronic type angular accelerometer is realized.
In this embodiment, the low temperature sealing-in closing device includes cavity body 10, the ring mounting panel, first crimping apron 21, second crimping apron 22, cryogenic cooling unit and locking screw 30, and the material of cavity body 10, the ring mounting panel, first crimping apron 21 and second crimping apron 22 is the aluminum alloy metal, and the cryogenic cooling unit is cooling ice bag, and cavity body 10 makes with the ring mounting panel is integrative, and cavity body 10 has the chamber 10a that holds that is used for placing cooling ice bag. The hollow cavity body 10 of the low-temperature sealing closing-in device is placed on a flat table surface, and a second crimping cover plate 22 and a first crimping cover plate 21 of a sensitive assembly ring are respectively installed on a ring installation plate on the slope side end face of the hollow cavity body 10 of the low-temperature sealing closing-in device through locking screws 30 to form a complete low-temperature sealing closing-in device.
Specifically, the method for sealing and closing the ring of the sensitive component by using the device for sealing and closing the ring of the sensitive component of the molecular electronic type angular accelerometer at the low temperature is as follows.
Firstly, placing a hollow cavity body 10 of a low-temperature sealing and closing device on a flat table surface, placing a sensitive component ring 100 to be sealed in a mounting groove of a ring mounting plate on the slope side end surface of the hollow cavity body 10 of the low-temperature sealing and closing device, firstly, mounting a second crimping cover plate 22, fixing only the part of the ring body 110 and a working liquid compensator 120 by the second crimping cover plate 22, opening a slotted hole 20a on a first crimping cover plate 21, after partial fixing of the accelerometer sensitive assembly ring, the mounting of the first crimp cover 21 may be performed, since the operation fluid injection tube 130 is required to protrude from the slot, it is required to slowly operate the first crimp cover, so that the working liquid injection pipe extends out of the slot hole, and after the working liquid injection hole needing high-temperature flame closing and sealing is exposed, the first crimping cover plate 21 is fixedly arranged on the ring mounting plate.
And step two, placing the prepared ice blocks into an ice block bag and placing the ice blocks into an accommodating cavity 10a of a cavity body 10 in the low-temperature sealing closing device. After standing for 15 minutes, the temperature of the cavity body 10 in the low-temperature sealing closing-in device made of the aluminum alloy material is reduced to below 10 ℃ from room temperature through measurement of a thermometer, and due to the conduction performance of the metal material, the environment temperature of the ring 100 of the sensitive component can be considered to be below 10 ℃.
And step three, after the ring of the sensitive assembly is stood and cooled, performing high-temperature sealing closing on a working liquid injection port of the ring of the sensitive assembly by using a special lamp gun. The flame temperature is kept at 1000 +/-50 ℃, and the sealing and closing operation time is not more than 10s, so that the working temperature of the ring of the sensitive assembly is prevented from being influenced by overlong sealing and closing operation time. Therefore, sealing of the ring of the angular accelerometer sensitive assembly by the working liquid injection port is completed. At the moment, the crimping cover plate can be detached from the ring mounting plate, the next sensitive assembly ring to be sealed and closed is placed in the mounting groove of the ring mounting plate, and the steps are repeated until the sealing and closing of the sensitive assembly ring is completed.
In conclusion, the invention provides a low-temperature sealing closing device and method for a ring of a sensitive component of an angular accelerometer, wherein the device realizes the installation of the ring of the sensitive component of the accelerometer through a ring installation plate, and meanwhile, a liquid level in a working liquid compensator is ensured to be kept in a horizontal state by an installation groove on the ring installation plate, so that the liquid level is prevented from approaching a flame sealing position due to the inclination of the liquid level, and the operation safety is improved; in addition, through setting up the low temperature cooling unit in the intracavity that holds of cavity body, the low temperature cooling unit effect is in low temperature environment in order to make the sensitive subassembly ring of accelerometer be in, under this kind of low temperature environment, utilize expend with heat and contract with cold effect, liquid in the working liquid compensator is by the cold shrink, thereby make the liquid level descend, guarantee that the working liquid level keeps away from flame and seal the department, moreover, under low temperature environment, working liquid is difficult for burning, thereby liquid burning possibility has been reduced, sensitive subassembly ring has been avoided exploding, the security of low temperature sealing-in binding off has been improved. Tests prove that the yield of the key process of sealing and closing the ring of the sensitive component can be improved from 30% to 80% by adopting the low-temperature sealing and closing device provided by the invention, and practical conditions show that the device is adopted to finish the ring of the sensitive component with low-temperature sealing and closing, the operation is stable and reliable, and the requirement of an angular accelerometer on the performance of the ring of the sensitive component is met.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a sensitive subassembly ring low temperature sealing-in binding off device of angular accelerometer, the sensitive subassembly ring of angular accelerometer includes ring body, working liquid compensator and working liquid filling tube, its characterized in that, low temperature sealing-in binding off device includes:
the horizontal table comprises a hollow cavity body (10), wherein the hollow cavity body (10) is provided with an accommodating cavity (10a), and the hollow cavity body (10) is placed on a horizontal table top;
the ring mounting plate is fixedly arranged on one side of the hollow cavity body (10), the ring mounting plate is provided with a mounting groove matched with the structures of the ring body and the working liquid compensator, and when the angular accelerometer sensitive component ring is arranged in the mounting groove of the ring mounting plate, the liquid level in the working liquid compensator is kept in a horizontal state;
the crimping cover plate (20) is detachably arranged on the ring mounting plate, the crimping cover plate (20) is provided with a slotted hole (20a), the crimping cover plate (20) is used for fixedly arranging the angular accelerometer sensitive component ring on the ring mounting plate, and when the crimping cover plate (20) is fixedly arranged on the ring mounting plate, the working liquid injection pipe extends out of the crimping cover plate (20) through the slotted hole (20 a);
the low-temperature cooling unit is arranged in the accommodating cavity (10a) and is used for cooling the ambient temperature of the annular ring of the angular accelerometer sensitive assembly.
2. A looped cryosealing closure arrangement for a sensitive component of an angular accelerometer according to claim 1, wherein the crimp cover (20) comprises a first crimp cover (21) and a second crimp cover (22), the slot (20a) being provided in the first crimp cover (21), the first crimp cover (21) and the second crimp cover (22) cooperating to fixedly locate the crimp cover (20) on the looped mounting plate.
3. The device for sealing and necking a sensing component ring of an angular accelerometer according to claim 1, further comprising a sensing unit disposed in the hollow cavity body (10), wherein the sensing unit is used for detecting the ambient temperature of the sensing component ring of the angular accelerometer in real time.
4. The device for sealing and necking a sensing assembly ring at low temperature of claim 3, further comprising a control unit, wherein the control unit is respectively connected with the sensing unit and the low-temperature cooling unit, and the control unit is used for controlling the low-temperature cooling unit according to the environmental temperature fed back by the sensing unit so as to keep the environmental temperature of the sensing assembly ring at a set temperature range.
5. The device for sealing and necking angular accelerometer sensitive component ring at low temperature according to any one of claims 1 to 4, further comprising a sealing cover plate disposed at the other side of the hollow cavity body (10), wherein the sealing cover plate is used for sealing the hollow cavity to improve the cooling performance of the low-temperature cooling unit.
6. A ring low-temperature sealing-in and necking device for a sensitive component of an angular accelerometer according to claim 5, wherein the hollow cavity body (10), the ring mounting plate, the crimp cover plate (20) and the closing cover plate are all made of aluminum alloy.
7. A ring low-temperature sealing and necking device of a sensitive component of an angular accelerometer according to claim 6, wherein the hollow cavity body (10) is integrally formed with the ring mounting plate.
8. The ring low-temperature sealing and necking device of a sensitive component of an angular accelerometer according to claim 7, further comprising a first sealing member and a second sealing member, wherein the first sealing member is arranged between the hollow cavity body and the closing cover plate, and the second sealing member is arranged between the ring mounting plate and the crimping cover plate (20).
9. A low-temperature sealing and closing method for a ring of a sensitive component of an angular accelerometer, which is characterized in that the low-temperature sealing and closing method for the ring of the sensitive component of the angular accelerometer uses the low-temperature sealing and closing device for the ring of the sensitive component of the angular accelerometer according to any one of claims 1 to 8.
10. The method for sealing and necking a sensing assembly ring of a corner accelerometer according to claim 9, wherein the method for sealing and necking a sensing assembly ring of a corner accelerometer at a low temperature comprises the following steps:
placing a hollow cavity body (10) on a horizontal table surface, and placing a ring of an angular accelerometer sensitive component to be sealed in a mounting groove of a ring mounting plate at one side of the hollow cavity body (10);
fixedly arranging a crimping cover plate (20) on the ring mounting plate, wherein a working liquid injection pipe of a sensitive assembly ring of the angular accelerometer extends out of the crimping cover plate (20) through a slotted hole (20a) in the crimping cover plate (20);
placing a low-temperature cooling unit in an accommodating cavity (10a) of the hollow cavity body (10), and reducing the working temperature of the ring of the angular accelerometer sensitive component to a set temperature range;
and carrying out high-temperature sealing and closing on the working liquid injection pipe of the ring of the angular accelerometer sensitive assembly by using a sealing tool.
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| CN201910796562.4A CN110554212B (en) | 2019-08-27 | 2019-08-27 | Low-temperature sealing and closing device and method for ring of sensitive component of angular accelerometer |
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| CN1156677C (en) * | 2002-04-03 | 2004-07-07 | 中国航天科工集团第三研究院第三十三研究所 | Molecule-type liquid-ring angular accelerometer |
| US7516660B2 (en) * | 2004-05-21 | 2009-04-14 | Met Tech, Inc. | Convective accelerometer |
| US7424826B2 (en) * | 2005-11-10 | 2008-09-16 | Memsic, Inc. | Single chip tri-axis accelerometer |
| CN106033089A (en) * | 2015-03-17 | 2016-10-19 | 北京自动化控制设备研究所 | Small-volume digital molecular electronic angle accelerometer |
| CN105954540A (en) * | 2016-06-15 | 2016-09-21 | 吉林大学 | Electrochemical inertia sensor based on planar interdigital electrode structure |
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