CN210716929U - Be used to group's sealed unit and fill nitrogen gas system - Google Patents
Be used to group's sealed unit and fill nitrogen gas system Download PDFInfo
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- CN210716929U CN210716929U CN201921485644.9U CN201921485644U CN210716929U CN 210716929 U CN210716929 U CN 210716929U CN 201921485644 U CN201921485644 U CN 201921485644U CN 210716929 U CN210716929 U CN 210716929U
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Abstract
The utility model provides an be used to group's sealed unit and fill nitrogen gas system. The nitrogen filling system of the inertial unit sealing unit comprises a nitrogen cylinder, an electric vacuum pump, a monitoring pipeline, a working pipeline, a multi-pipeline straight-through gas exhaust and a two-position three-way valve; one end of the monitoring pipeline is communicated with the multi-pipeline straight-through gas exhaust, and the other end of the monitoring pipeline is connected with monitoring equipment; one end of the working pipeline is communicated with the multi-pipeline straight-through gas exhaust, and the other end of the working pipeline is connected with an inertial unit sealing unit; the monitoring pipeline is connected with the working pipeline in parallel and communicated with the inside of the multi-pipeline straight-through gas exhaust; and the multi-pipeline straight-through gas exhaust is respectively communicated with a nitrogen cylinder or an electric vacuum pump through the two-position three-way valve. Compared with the prior art, the utility model provides an be used to group's sealed unit and fill nitrogen gas system simple structure, easy to operate, the cost is lower, efficient, convenient to use, can reach higher parameter index, solved effectively and be used to the problem that group's sealed unit fills nitrogen gas protection.
Description
Technical Field
The utility model relates to a be applied to and be used to nitrogen gas system that fills of group's sealed unit belongs to and fills nitrogen gas protection technical field, and especially the part level is used to group's sealed unit and is filled nitrogen gas protection.
Background
After the inertia unit sealing unit structures are integrated, in order to ensure the working stability of the inertia unit sealing unit, the inner cavity of the inertia unit sealing unit needs to be filled with nitrogen for protection, and the technical index requirements of nitrogen concentration and pressure in the cavity of the inertia unit sealing unit are met.
Therefore, it is necessary to provide a nitrogen filling system for an inertial measurement unit to meet the above technical requirements.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an be used to group's sealed unit and filled nitrogen gas system has effectively solved and has been used to the problem that group's sealed unit fills nitrogen gas protection.
The technical scheme of the utility model is that: a nitrogen filling system for an inertial measurement unit sealing unit comprises a nitrogen cylinder, an electric vacuum pump, a monitoring pipeline, a working pipeline, a multi-pipeline straight-through gas exhaust and a two-position three-way valve;
one end of the monitoring pipeline is communicated with the multi-pipeline straight-through gas exhaust, and the other end of the monitoring pipeline is connected with monitoring equipment;
one end of the working pipeline is communicated with the multi-pipeline straight-through gas exhaust, and the other end of the working pipeline is connected with an inertial unit sealing unit;
the monitoring pipeline is connected with the working pipeline in parallel and communicated with the inside of the multi-pipeline straight-through gas exhaust;
and the multi-pipeline straight-through gas exhaust is respectively communicated with a nitrogen cylinder or an electric vacuum pump through the two-position three-way valve.
In the above scheme, the working pipeline is used for filling the nitrogen gas pipeline for the inertial unit sealing unit, the working pipeline is connected with the monitoring pipeline in parallel and communicated, and the monitoring equipment can monitor the nitrogen pressure and concentration in the working pipeline and the inertial unit sealing unit in real time, so that a better nitrogen gas filling protection effect is achieved, and the damage of the inertial unit sealing unit is avoided.
And an electric vacuum pump is adopted to vacuumize the inertial unit sealing unit, so that the gas in the inertial unit sealing unit is high and stable in purification efficiency.
And a two-position three-way valve is adopted for gas path control, so that the operations of vacuumizing and filling nitrogen for multiple times of the inertial unit sealing unit by the nitrogen filling system are realized.
Preferably, the multi-pipeline straight-through air exhaust is provided with an air port and a plurality of interfaces, and the air port and the interfaces are communicated in the multi-pipeline straight-through air exhaust;
the two-position three-way valve is communicated with the air port through an air pipe, and the monitoring pipeline and the working pipeline are respectively communicated with one of the interfaces.
Preferably, the monitoring device comprises a digital vacuum pressure gauge, and the monitoring pipeline is communicated between the multi-pipeline straight-through gas exhaust and the digital vacuum pressure gauge.
Preferably, the monitoring device further comprises a hand vacuum pump in communication with the digital vacuum pressure gauge.
Preferably, the monitoring device further comprises a fine adjustment valve capable of finely adjusting and monitoring the pressure value of the pipeline, the fine adjustment valve is of a three-way structure, two valve ports are respectively communicated with the hand vacuum pump and the digital vacuum pressure gauge, and the other valve port is a thread adjusting end.
Preferably, the monitoring device further comprises a safety valve, and the safety valve is arranged on the monitoring pipeline and close to the digital vacuum pressure gauge.
Preferably, the monitoring device further comprises a detection pipeline, wherein the detection pipeline is connected with the monitoring pipeline in parallel and communicated with the inside of the multi-pipeline straight-through gas exhaust; one end of the detection pipeline is communicated with the multi-pipeline direct air exhaust, and the other end of the detection pipeline is connected with a detector.
Preferably, the detector is a pump-suction type nitrogen concentration detector.
Preferably, the monitoring pipeline, the working pipeline and the detection pipeline are communicated with the multi-pipeline straight-through gas exhaust through quick connectors.
Preferably, the two-position three-way valve is a manual valve and comprises a valve position A and a valve position B, the electric vacuum pump is communicated with the multi-pipeline straight-through gas exhaust when the valve position A is achieved, and the nitrogen cylinder is communicated with the multi-pipeline straight-through gas exhaust when the valve position B is achieved.
Compared with the prior art, the beneficial effects of the utility model are that: the device has the advantages of simple structure, easy operation, low cost, high efficiency and convenient use, can reach higher parameter indexes, and effectively solves the problem of nitrogen filling protection of the inertial unit sealing unit.
Drawings
Fig. 1 is a schematic structural diagram of a nitrogen filling system for a sealing unit of an inertial measurement unit provided by the present invention.
In the attached figure, a nitrogen cylinder 1, a two-position three-way valve 2, a multi-pipeline straight-through gas exhaust 3, a gas port 31, a port 32, a safety valve 4, a digital vacuum pressure gauge 5, a hand-press vacuum pump 6, a detector 7, an inertial unit 8, a quick connector 9, a workbench 10, an electric vacuum pump 11, a fine-adjustment valve 12, a monitoring pipeline 13, a working pipeline 14 and a detection pipeline 15.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. For convenience of description, the words "upper", "lower", "left" and "right" in the following description are used only to indicate the correspondence between the upper, lower, left and right directions of the drawings themselves, and do not limit the structure.
As shown in fig. 1, the nitrogen filling system for the inertial measurement unit sealing unit provided in this embodiment includes a nitrogen cylinder 1, a two-position three-way valve 2, a multi-pipeline straight-through gas exhaust 3, a monitoring device, a C-type quick coupling 9, a workbench 10, an electric vacuum pump 11, a monitoring pipeline 13, a working pipeline 14, and a detection pipeline 15.
The multi-pipeline straight-through gas exhaust 3 is provided with a gas port 31 and five interfaces 32, and the gas port 31 and the five interfaces 32 are communicated inside the multi-pipeline straight-through gas exhaust 3. The two-position three-way valve 2 is communicated with the air port 31 through an air pipe.
The monitoring pipeline 13, the working pipeline 14 and the detection pipeline 15 are connected in parallel; one end of the monitoring pipeline 13 is communicated with one interface 32 of the multi-pipeline straight-through gas exhaust 3 through a C-type quick connector 9, and the other end of the monitoring pipeline is connected with the monitoring equipment.
The monitoring equipment comprises a safety valve 4, a digital vacuum pressure gauge 5, a hand vacuum pump 6 and a fine adjustment valve 12. The monitoring pipeline 13 is connected between the multi-pipeline straight-through gas exhaust 3 and the digital vacuum pressure gauge 5. The safety valve 4 is arranged on the monitoring pipeline 13 and close to the digital vacuum pressure gauge 5, and the safety valve 4 can play a role in safety protection.
The digital vacuum pressure gauge 5 has the following functions: in the air extraction process, measuring the vacuum degree in the unit after air extraction through the appearance; during inflation, from this apparent pressure rise, the gas fill cell is determined and the final pressure of the fill gas is determined.
The hand vacuum pump 6 is communicated with the digital vacuum pressure gauge 5 through the fine adjustment valve 12. The fine adjustment valve 12 is of a three-way structure, two valve ports of the fine adjustment valve are respectively communicated with the hand vacuum pump 6 and the digital vacuum pressure gauge 5, and the other valve port is a threaded adjusting end.
The fine adjustment valve 12 is a vacuum fine adjustment valve, which is also called a vacuum needle valve for short, and the fine adjustment of the vacuum pressure value of the nitrogen filling system is realized through the screw structure of the screw thread adjusting end of the knob according to the digital display of the digital vacuum pressure gauge 5, so that the pressure value of the digital vacuum pressure gauge 5 returns to zero.
The hand vacuum pump is used for detecting the air tightness of the nitrogen filling system in advance, and the detection method comprises the steps of repeatedly pumping the hand vacuum pump, and judging whether the air tightness meets the requirement of the nitrogen filling environment through a numerical value displayed on the digital vacuum pressure gauge 5.
One end of the working pipeline 14 is communicated with the other interface of the multi-pipeline straight-through gas exhaust 3 through a C-type quick connector 9, and the other end of the working pipeline is connected with an inertial unit sealing unit 8.
The detection pipeline 15 is connected with the monitoring pipeline 13 in parallel, one end of the detection pipeline 15 is communicated with the third interface of the multi-pipeline direct air exhaust 3 through a C-type quick connector 9, and the other end of the detection pipeline is connected with a detector 7. The detector 7 is a pump suction type nitrogen concentration detector and can detect the nitrogen concentration of the gas path.
The other two interfaces of the multi-pipeline straight-through gas exhaust 3 are standby interfaces.
Two three-way valves 2 are manual valves, and for current outsourcing spare, it includes valve position A and valve position B: in the valve position a, the electric vacuum pump 11 is communicated with the multi-pipeline straight-through gas exhaust 3 and is communicated with the monitoring pipeline 13, the working pipeline 14 and the detection pipeline 15 through a port 32 communicated with the inside of the multi-pipeline straight-through gas exhaust 3.
And when the valve position B is realized, the nitrogen cylinder 1 is communicated with the multi-pipeline straight-through gas exhaust 3 and is communicated with the monitoring pipeline 13, the working pipeline 14 and the detection pipeline 15 through a connector 32 communicated with the inside of the multi-pipeline straight-through gas exhaust 3.
All the other components except the nitrogen cylinder 1 and the electric vacuum pump 11 are provided on the table 10.
The utility model provides an it fills nitrogen gas system's theory of operation to be used to group's sealed unit does:
connecting all parts in the system, firstly, not installing an inertial unit sealing unit, opening a digital vacuum pressure gauge 5, and enabling the numerical value to return to zero through a fine adjustment valve;
vacuumizing the nitrogen filling system by pressing a vacuum pump 6 by hand, and simultaneously checking the air tightness of the nitrogen filling system by penetrating through the numerical value on a numerical value vacuum pressure gauge 5;
after the requirement is met, the inertial measurement unit sealing unit 8 is connected to a working pipeline 14 of a nitrogen filling system, a switch of an electric vacuum pump 11 is turned on, the two-position three-way valve 2 is shifted to the A position, and air in the inertial measurement unit sealing unit 8 is extracted through the electric vacuum pump 11;
the valve of the nitrogen cylinder 1 is opened, the two-position three-way valve 2 is dialed to the B position, nitrogen is filled into the inertial unit sealing unit 8, nitrogen is also arranged on the monitoring pipeline 13 and the detection pipeline 15, and the real-time monitoring and detection of the nitrogen concentration and the pressure can be realized.
The method specifically comprises the following steps: and the nitrogen concentration in the inertial unit sealing unit 8 is improved through multiple operations of vacuumizing and filling nitrogen. In the process of filling the nitrogen into the inertial unit sealing unit 8, the digital vacuum pressure gauge 5 monitors the pressure of each gas path of the nitrogen filling system in real time, and the detector 7 detects the concentration of the nitrogen filling system in real time.
In the process of filling nitrogen, if overpressure occurs, the safety valve 4 releases the pressure to ensure that the inertial measurement unit sealing unit 8 is not damaged. And after the inertial unit sealing unit 8 finishes the operation of filling nitrogen, the air charging nozzle of the inertial unit sealing unit 8 is cut and sealed by a cutting clamp, and the rubber is coated for sealing.
The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.
Claims (10)
1. An inertial measurement unit sealing unit nitrogen filling system comprises a nitrogen cylinder (1) and an electric vacuum pump (11), and is characterized by further comprising a monitoring pipeline (13), a working pipeline (14), a multi-pipeline straight-through gas exhaust (3) and a two-position three-way valve (2);
one end of the monitoring pipeline (13) is communicated with the multi-pipeline straight-through gas exhaust (3), and the other end of the monitoring pipeline is connected with monitoring equipment;
one end of the working pipeline is communicated with the multi-pipeline straight-through gas exhaust (3), and the other end of the working pipeline is connected with an inertial unit sealing unit;
the monitoring pipeline (13) is connected with the working pipeline (14) in parallel and communicated with the inside of the multi-pipeline straight-through gas exhaust row (3);
the multi-pipeline straight-through gas exhaust (3) is respectively communicated with the nitrogen cylinder (1) or the electric vacuum pump (11) through the two-position three-way valve (2).
2. The inerter-stack sealing unit nitrogen-charging system according to claim 1, wherein the multi-pipeline straight-through gas exhaust (3) is provided with a gas port (31) and a plurality of interfaces (32), and the gas port (31) and the plurality of interfaces (32) are communicated inside the multi-pipeline straight-through gas exhaust (3);
the two-position three-way valve (2) is communicated with the air port (31) through an air pipe, and the monitoring pipeline (13) and the working pipeline (14) are respectively communicated with one interface (32).
3. Inerter-seal-unit nitrogen-charging system according to claim 1, characterized in that the monitoring device comprises a digital vacuum pressure gauge (5), and the monitoring line is connected between the multi-line straight-through gas vent (3) and the digital vacuum pressure gauge (5).
4. Inerter seal unit nitrogen dosing system according to claim 3, characterized in that the monitoring device further comprises a hand vacuum pump (6) in communication with the digital vacuum gauge (5).
5. The inerter-seal unit nitrogen-filling system according to claim 4, wherein the monitoring device further comprises a trim valve (12) capable of trimming the pressure value of the monitoring pipeline (13), the trim valve (12) is of a three-way structure, two valve ports are respectively communicated with the hand vacuum pump (6) and the digital vacuum pressure gauge (5), and the other valve port is a threaded adjusting port.
6. Inerter-seal-unit nitrogen-charging system according to claim 3, characterized in that the monitoring device further comprises a safety valve (4), the safety valve (4) being provided in the monitoring line (13) and adjacent to the digital vacuum pressure gauge (5).
7. Inerter-seal-unit nitrogen-charging system according to claim 1, characterized by further comprising a detection line (15), said detection line (15) being connected in parallel with said monitoring line (13) and communicating inside said multi-line straight-through gas exhaust (3); one end of the detection pipeline (15) is communicated with the multi-pipeline straight ventilation exhaust (3), and the other end of the detection pipeline is connected with a detector (7).
8. Inerter seal unit nitrogen dosing system according to claim 7, characterized in that the detector (7) is a pump-suction nitrogen concentration detector.
9. Inerter-seal-unit nitrogen-charging system according to claim 7, characterized in that the monitoring line (13), the working line (14) and the detection line (15) are all in communication with the multi-line vent line (3) through quick connectors (9).
10. Inerter-seal-unit nitrogen-charging system according to claim 1, characterized by the fact that two-position three-way valve (2) is a manual valve comprising a valve position a, in which the electric vacuum pump (11) communicates with the multi-line straight-through vent (3), and a valve position B, in which the nitrogen cylinder (1) communicates with the multi-line straight-through vent (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921485644.9U CN210716929U (en) | 2019-09-09 | 2019-09-09 | Be used to group's sealed unit and fill nitrogen gas system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921485644.9U CN210716929U (en) | 2019-09-09 | 2019-09-09 | Be used to group's sealed unit and fill nitrogen gas system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440132A (en) * | 2019-09-09 | 2019-11-12 | 湖南航天机电设备与特种材料研究所 | The used group sealing unit inflated with nitrogen system and method for one kind |
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2019
- 2019-09-09 CN CN201921485644.9U patent/CN210716929U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110440132A (en) * | 2019-09-09 | 2019-11-12 | 湖南航天机电设备与特种材料研究所 | The used group sealing unit inflated with nitrogen system and method for one kind |
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