CN-224216255-U - Airtight inspection and vacuumizing device applied to sectional sealing body

CN224216255UCN 224216255 UCN224216255 UCN 224216255UCN-224216255-U

Abstract

The application relates to an airtight inspection and vacuumizing device applied to a segmented sealing body, which comprises the following components: the device comprises a nitrogen tank, a pressure reducing valve, a flow dividing valve, an inflation electromagnetic valve group, a pressure sensor group, an inflation joint group, a vacuum pump, an air extraction electromagnetic valve, a vacuum sensor, an air extraction joint and a PLC controller. According to the technical scheme, the automatic device replaces the traditional manual operation of the high-pressure nitrogen cylinder and manual pressure regulation, the PLC is utilized to intensively control the inflation electromagnetic valve and the air suction electromagnetic valve, so that one-key inflation/vacuumizing operation can be realized, a large amount of manual cooperation operation is not needed, and the working efficiency is improved while the labor cost is reduced. The pressure/vacuum upper and lower limit threshold values can be set in the technical scheme, the PLC automatically judges the standard state, and the PLC controller, the pressure sensor group and the vacuum sensor are utilized for closed-loop control, so that the PLC controller has higher precision and stability compared with manual staring a watch and manual pressure regulation.

Inventors

YANG JUN
ZHANG SHENG
ZHU YONGYONG
Jiao Dezhuang
SUN GUOPENG
WANG YUPENG
YANG QIXUAN
WU QINGFENG

Assignees

中国人民解放军92763部队

Dates

Publication Date: 20260508
Application Date: 20250716

Claims (9)

1. An airtight inspection and evacuation device applied to a segmented seal body, comprising: the device comprises a nitrogen tank, a pressure reducing valve, a flow dividing valve, an inflation electromagnetic valve group, a pressure sensor group, an inflation joint group, a vacuum pump, an air extraction electromagnetic valve, a vacuum sensor, an air extraction joint and a PLC controller; the inflation electromagnetic valve group comprises a first inflation electromagnetic valve, a second inflation electromagnetic valve and a third inflation electromagnetic valve; the pressure sensor group comprises a first pressure sensor, a second pressure sensor and a third pressure sensor; The inflation joint group comprises a first inflation joint, a second inflation joint and a third inflation joint; The nitrogen tank is connected with the pressure reducing valve through a pipeline; The pressure reducing valve is connected with the flow dividing valve through a pipeline; The shunt valve is connected with the first inflation electromagnetic valve, the second inflation electromagnetic valve and the third inflation electromagnetic valve through pipelines; The first inflation electromagnetic valve, the second inflation electromagnetic valve and the third inflation electromagnetic valve are respectively connected with the first inflation connector, the second inflation connector and the third inflation connector through pipelines; The first inflation connector, the second inflation connector and the third inflation connector are respectively connected with a head section cavity, a middle section cavity and a rear section cavity of the segmented sealing body; The first pressure sensor, the second pressure sensor and the third pressure sensor are respectively arranged at the head section cavity, the middle section cavity and the rear section cavity of the sectional sealing body; the vacuum sensor is arranged at the middle section cavity of the sectional sealing body; the vacuum pump is connected with the air extraction electromagnetic valve through a pipeline; The air extraction electromagnetic valve is connected with the air extraction joint through a pipeline; The air extraction joint is connected with the middle section cavity of the sectional sealing body; The PLC is electrically connected with the inflation electromagnetic valve group, the pressure sensor group and the air exhaust electromagnetic valve; Wherein, prevent gas circulation through inside seal structure between the first section cavity of sectional type seal body, middle section cavity and the back end cavity.
2. The apparatus of claim 1, wherein the PLC controller comprises: A timing circuit; The first pressure sensor, the second pressure sensor and the third pressure sensor are respectively arranged at the outer sides of the head section cavity, the middle section cavity and the rear section cavity of the sectional sealing body; the vacuum sensor is arranged outside the middle section cavity of the sectional sealing body.
3. The apparatus of claim 1, wherein the apparatus further comprises: A nitrogen making machine; the nitrogen making machine is connected with the nitrogen tank through a pipeline.
4. The apparatus of claim 1, wherein the apparatus further comprises: a console; the control console comprises a touch display screen and a power switch; The control console is electrically connected with the PLC.
5. The apparatus of claim 4, wherein the console further comprises: manual opening and closing of each valve and a pressure adjusting knob.
6. The apparatus of claim 4, wherein the apparatus further comprises: A nitrogen tank pressure sensor and a pipeline pressure sensor; The nitrogen tank pressure sensor is arranged in the nitrogen tank; the pipeline pressure sensors are arranged in the pipelines; the PLC is electrically connected with the nitrogen tank pressure sensor and the pipeline pressure sensor; the console further comprises: nitrogen tank manometer and pipeline manometer.
7. The apparatus of claim 6, wherein the console further comprises: The head section cavity pressure gauge, the middle section cavity pressure gauge and the rear section cavity pressure gauge of the sectional type sealing body.
8. The apparatus of claim 1, wherein the apparatus further comprises: A plurality of safety valves; The safety valves are arranged on the pipelines.
9. The apparatus of claim 1, wherein the apparatus further comprises: Sealing the box body; The sealing box body is internally provided with a station for placing the segmented sealing body; the inflation joint group is arranged in the sealing box body.

Description

Airtight inspection and vacuumizing device applied to sectional sealing body Technical Field The application relates to the technical field of military equipment, in particular to an airtight inspection and vacuumizing device applied to a segmented sealing body. Background The sectional sealing body in the military equipment needs to carry out airtight inspection on the cavities of the first, middle and rear sections due to engineering technical requirements, and the middle section needs to be vacuumized and filled with nitrogen after the airtight is qualified. At present, the airtight inflation and the vacuumizing nitrogen filling operation of the type equipment are finished by manual or semi-automatic equipment, and the problems are that the working efficiency is low, due to engineering technical requirements, the sectional type sealing body needs to be subjected to airtight inspection and vacuumizing operation before use, and the sealing body is inflated by means of a high-pressure nitrogen bottle (15 MPa) filled in the market at present, 3 persons are required to cooperate with the operation, the pressure reducing valve of the sealing body is slowly regulated, the pressure gauge is tightly stared at 1 person at time, the pressure is regulated to 0.02-0.2MPa, and the inflation of each section of the sealing body is finished. When the middle section is vacuumized, no special vacuumizing equipment is used, and the fault rate of the used old equipment is high and the vacuumizing efficiency is low. Therefore, the whole airtight inspection and vacuumizing operation process has the problems of low pressure control precision and low automation degree, and particularly has the problems of standardization guarantee, equipment restriction during large-batch operation, manpower resource consumption, low working efficiency and the like. Secondly, the operation safety is low. In the whole operation process, an operator needs to frequently adjust the output pressure of the high-pressure nitrogen cylinder (15 MPa) so as to meet the requirement of inflation pressure, and potential high-pressure risks have certain potential safety hazards to the operator or precise sensitive components in the equipment. Disclosure of utility model In order to at least overcome the problems of low efficiency and low operation safety of manually performing airtight inspection and vacuumizing on the sectional type sealing body in the related art to a certain extent, the application provides an airtight inspection and vacuumizing device applied to the sectional type sealing body. The scheme of the application is as follows: an airtight inspection and evacuation device applied to a segmented seal body, comprising: the device comprises a nitrogen tank, a pressure reducing valve, a flow dividing valve, an inflation electromagnetic valve group, a pressure sensor group, an inflation joint group, a vacuum pump, an air extraction electromagnetic valve, a vacuum sensor, an air extraction joint and a PLC controller; the inflation electromagnetic valve group comprises a first inflation electromagnetic valve, a second inflation electromagnetic valve and a third inflation electromagnetic valve; the pressure sensor group comprises a first pressure sensor, a second pressure sensor and a third pressure sensor; The inflation joint group comprises a first inflation joint, a second inflation joint and a third inflation joint; The nitrogen tank is connected with the pressure reducing valve through a pipeline; The pressure reducing valve is connected with the flow dividing valve through a pipeline; The shunt valve is connected with the first inflation electromagnetic valve, the second inflation electromagnetic valve and the third inflation electromagnetic valve through pipelines; The first inflation electromagnetic valve, the second inflation electromagnetic valve and the third inflation electromagnetic valve are respectively connected with the first inflation connector, the second inflation connector and the third inflation connector through pipelines; The first inflation connector, the second inflation connector and the third inflation connector are respectively connected with a head section cavity, a middle section cavity and a rear section cavity of the segmented sealing body; The first pressure sensor, the second pressure sensor and the third pressure sensor are respectively arranged at the head section cavity, the middle section cavity and the rear section cavity of the sectional sealing body; the vacuum sensor is arranged at the middle section cavity of the sectional sealing body; the vacuum pump is connected with the air extraction electromagnetic valve through a pipeline; The air extraction electromagnetic valve is connected with the air extraction joint through a pipeline; The air extraction joint is connected with the middle section cavity of the sectional sealing body; The PLC is electrically connected with the inflation electromagnetic valve group,