CN210322205U - Airtightness detection workstation for exhaust assembly - Google Patents
Airtightness detection workstation for exhaust assembly Download PDFInfo
- Publication number
- CN210322205U CN210322205U CN201920799212.9U CN201920799212U CN210322205U CN 210322205 U CN210322205 U CN 210322205U CN 201920799212 U CN201920799212 U CN 201920799212U CN 210322205 U CN210322205 U CN 210322205U
- Authority
- CN
- China
- Prior art keywords
- safety
- safety relay
- plc
- air
- test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model provides an air exhaust assembly airtightness detection workstation, which comprises a test cabinet, wherein the test cabinet comprises a test industrial personal computer arranged on one side and an airtightness detection working chamber arranged on the other side; the test industrial personal computer comprises a PLC controller and a display; the input end of the PLC is connected with the collector, and the PLC is connected with the plurality of safety relay modules; the plurality of safety relay modules comprise a grating safety circuit module and a safety valve circuit module; the display interface of the PLC is connected with a display; a plurality of safety relay modules are controlled by a PLC, and each safety relay module can control a plurality of electromagnetic valves simultaneously, so that the circuit structure is simplified. Adopt pressure sensor as pressure acquisition device, drive anchor clamps and test tube way through the cylinder, carry out the gas tightness test, avoid the error that manual operation caused, measuring result is accurate, easy operation.
Description
Technical Field
The utility model relates to an airtight detection technical field of car parts, in particular to airtight detection workstation of exhaust assembly.
Background
The air tightness of the motor vehicle exhaust assembly is a parameter of a motor vehicle, so the air tightness detection of the motor vehicle exhaust assembly is crucial, and the existing air tightness detection device of the motor vehicle exhaust pipeline generally comprises a nitrogen cylinder and an inflation gas circuit, wherein a one-way valve for preventing gas from flowing back to the gas cylinder, an inflation valve for controlling the on/off of the inflation gas circuit, a filter, a safety valve and an air supply pressure gauge are sequentially arranged on the inflation gas circuit along an inflation direction. The air pressure of gas filled into the pipeline to be detected by the pipeline air tightness detection device is determined by the air pressure of the gas bottle, the pipeline air tightness detection device is inconvenient to adjust, a pressure gauge is used for testing, the numerical value is inaccurate, and the operation is inconvenient. In the testing process, when leakage and other conditions occur due to overlarge pressure, the safety protection capability is not provided, and workers are easily damaged; the safety is poor, the reliability is poor, and the detection of air tightness is not facilitated.
SUMMERY OF THE UTILITY MODEL
The purpose of the present invention is to solve at least one of the technical drawbacks.
In order to achieve the above object, an embodiment of an aspect of the present invention provides an air tightness detection workstation of an exhaust assembly, including a test cabinet, where the test cabinet includes a test industrial personal computer disposed on one side and an air tightness detection workstation disposed on the other side; the test industrial personal computer comprises a PLC controller and a display; the input end of the PLC is connected with the collector, and the PLC is connected with the plurality of safety relay modules; the plurality of safety relay modules comprise a grating safety circuit module and a safety valve circuit module; the display interface of the PLC is connected with a display;
a plugging cylinder is arranged in the airtight detection working chamber, and the movable end of the plugging cylinder is fixedly connected with a clamp; the output end of the PLC is connected with the plugging cylinder through a connecting electromagnetic valve to drive the plugging cylinder to act; the clamp is connected with the test pipeline; the clamp is clamped at two ends of the exhaust assembly to be tested, and a plurality of safety valves are arranged in the test pipeline; each safety valve is connected with a safety valve circuit module, and the grating safety circuit module is connected with a safety grating; the safety grating is arranged outside the cabinet body of the test cabinet; the collector is arranged in the test pipeline and used for collecting pressure in the test pipeline.
Preferably, the safety relay modules are all safety relays with the models of SRB-E-201 ST.
In any of the above aspects, preferably, the safety relay module further comprises an emergency stop circuit module; the emergency stop circuit module comprises a first safety relay; the emergency stop button and the reset button are also included; the emergency stop button is connected with a starting pin of the first safety relay; the reset button is connected with a reset pin of the first safety relay; and the output end of the first safety relay is connected with an interrupt pin of the PLC.
In any of the above aspects, preferably, the safety circuit module of the optical grating comprises a second safety relay and a safety optical grating; the input end of the second safety relay is connected with the safety grating, and the output end of the second safety relay is connected with the electromagnetic valve for controlling the plugging cylinder.
In any of the above schemes, preferably, the safety valve circuit module includes a third safety relay, a first air intake solenoid valve, a second air intake solenoid valve, two three-position five-way solenoid valves, and four one-way solenoid valves; the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are respectively connected with the output end of the second safety relay; and each three-position five-way electromagnetic valve is connected with the output end of a third safety relay.
In any of the above schemes, preferably, the gas source is a nitrogen gas bottle.
In any of the above schemes, preferably, an air source triplet is provided between the air source and the air inlet valve.
In any of the above schemes, preferably, the air source triplet includes an air filter, a pressure reducing valve and an oil sprayer which are connected in sequence; the air source triple piece is used for filtering, decompressing and lubricating air released by an air source.
According to the utility model provides a pair of airtight detection workstation of exhaust assembly compares in prior art, has following advantage at least:
1. set up the safety grating in the external side of cabinet, formed the protection light curtain through the safety grating, carry out safety grating and detect time, in case the external portion of cabinet forms the protection zone, in case someone is close to, second safety relay control air inlet solenoid valve releases, has set up emergency stop button and reset button simultaneously, avoids the too big personnel's that cause of pressure to harm.
2. A plurality of safety relay modules are controlled by a PLC, and each safety relay module can control a plurality of electromagnetic valves simultaneously, so that the circuit structure is simplified.
3. Adopt pressure sensor as pressure acquisition device, drive anchor clamps and test tube way through the cylinder, carry out the gas tightness test, avoid the error that manual operation caused, measuring result is accurate, easy operation.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic structural diagram of an air tightness detecting workstation for an exhaust assembly according to an embodiment of the present invention;
FIG. 2 is a schematic circuit diagram of an emergency stop circuit module of an airtight detection workstation of an exhaust assembly according to an embodiment of the present invention
Fig. 3 is a schematic circuit diagram of a grating safety circuit module of an air-tightness detection workstation of an exhaust assembly according to an embodiment of the present invention;
fig. 4 is a schematic circuit diagram of a safety valve circuit module of an air tightness detection workstation of an exhaust assembly according to an embodiment of the present invention;
fig. 5 is a schematic diagram of a gas path of an air-tightness detecting workstation of an exhaust assembly according to an embodiment of the present invention.
Fig. 6 is a schematic circuit diagram of a PLC controller of an air-tightness detection workstation of an exhaust assembly according to an embodiment of the present invention.
In the figure:
1. a test cabinet; 2. testing an industrial personal computer; 3. an air-tightness detection working chamber; 4. a safety grating; 5. a gas source; 6. an air source triplet; 7. a first air intake solenoid valve; 8. a second air intake solenoid valve; 9. a valve plate; 10. a first three-position five-way solenoid valve; 11. a second three-position five-way solenoid valve; 12. a first one-way solenoid valve; 13. a second one-way solenoid valve; 14. a third one-way solenoid valve; 15. a fourth one-way solenoid valve; 16. a shuttle valve; SB, emergency stop button; ST, reset button; u1 and a PLC controller; u2, a first safety relay; u3, a first safety relay; u4, a first safety relay;
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
As shown in fig. 1-6, an air tightness detection workstation for an exhaust assembly according to an embodiment of the present invention includes a test cabinet 1, where the test cabinet 1 includes a test industrial personal computer 2 disposed on one side and an air tightness detection workstation 3 disposed on the other side; the test industrial personal computer 2 comprises a PLC U1 and a display; the input end of the PLC U1 is connected with the collector, and the PLC is connected with a plurality of safety relay modules; the plurality of safety relay modules comprise a grating safety circuit module and a safety valve circuit module; the display interface of the PLC U1 is connected with a display; the collector may employ a line pressure sensor model WH 131.
A plugging cylinder is arranged in the airtight detection working chamber 3, and the movable end of the plugging cylinder is fixedly connected with a clamp; the output end of the PLC is connected with the plugging cylinder through a connecting electromagnetic valve to drive the plugging cylinder to act; the clamp is connected with the test pipeline; the clamp is clamped at two ends of the exhaust assembly to be tested, and a plurality of electromagnetic safety valves are arranged in the test pipeline; each electromagnetic safety valve is connected with a safety valve circuit module, and the grating safety circuit module is connected with a safety grating 4; the safety grating 4 is arranged outside the cabinet body of the test cabinet 1; the collector is arranged in the test pipeline and used for collecting the pressure in the test pipeline.
In an embodiment of the present invention, in specific application, the cabinet door of the airtight detection working chamber 3 is opened, the exhaust assembly to be tested is placed in the airtight detection working chamber 3, the fixture is fixed at both ends of the exhaust assembly, the cabinet door is closed, the test industrial personal computer 2 is opened, the test industrial computer 2 can be connected to the keyboard or the control keys, the set pressure and the test time are input by using the keyboard or the control keys, and the control keys include an up-adjustment key, a down-adjustment key, a start key, an emergency stop key and a reset key; and a power supply pin of the PLC U1 is connected with a start button, the PLC U1 starts to work after the start button is pressed down, and the PLC U1 controls the grating safety circuit module and the safety valve circuit module to start to work.
During testing, the gas source 5 adopts a nitrogen cylinder. And an air source 5 triple piece is arranged between the air source 5 and the air inlet valve. The air source 5 comprises an air filter, a pressure reducing valve and an oil atomizer which are connected in sequence; the gas source 5 triple piece is used for filtering, decompressing and lubricating the gas released by the gas source 5. The test pipeline begins to be filled with nitrogen, the nitrogen enters the exhaust assembly to be tested through the test pipeline and the clamp, the collector collects pressure in the test pipeline and sends the collected pressure signal to the input end of the PLC U1, the PLC U1 compares the pressure signal with the set pressure signal according to the received pressure signal, and if the pressure value in the test pipeline is equal to the set pressure value at the moment, the PLC U1 controls the air inlet valve to be closed and maintains the pressure until the preset time. If the pressure value in the test pipeline is unchanged within the set time, the PLC U1 controls the exhaust valve to open and release the pressure, and the air tightness of the exhaust assembly is proved to be good. If the pressure value of the test pipeline is reduced within the set time, the exhaust assembly is proved to have a leakage point.
It should be noted that the key point of the scheme is not to improve the clamp and the test pipeline, and the test pipeline and the clamp commonly used in the field are adopted.
As shown in fig. 2-4, safety relays of SRB-E-201ST type are used in the safety relay modules.
As shown in fig. 2, the safety relay module further includes an emergency stop circuit module; the emergency stop circuit module comprises a first safety relay U4U3U 2; the emergency stop button SB and the reset button ST are also included; the emergency stop button SB is connected with a starting pin of a first safety relay U4U3U 2; the reset button ST is connected with a reset pin of the first safety relay U4U3U 2; the output end of the first safety relay U4U3U2 is connected with the interrupt pin of the PLC U1. When the scram button SB or the reset button ST is pressed, the starting pin or the reset pin of the SRB-E-201ST is forcibly pulled down to be at a low level, and at the moment, the output end is in a high-resistance state after power failure disconnection, so that the interrupt pin of the PLC U1 is pulled up to be in the high-resistance state, the PLC U1 is interrupted, and the whole system stops running.
As shown in fig. 3, the grating safety circuit module includes a second safety relay and a safety grating 4; the input end of the second safety relay is connected with the safety grating 4, and the output end of the second safety relay is connected with the air inlet electromagnetic valve. It should be noted that, in this embodiment, the output of PLC controller U1 and the output of second safety relay connect the both ends of the solenoid valve that admits air respectively, have realized that no matter when equipment moves, someone is close to the safety barrier or equipment start-up in-process, has pressed scram or reset button ST, and the switching operating condition of solenoid valve that admits air of homoenergetic control stops conveying gas, avoids the too big personnel's damage that causes of pressure.
As shown in fig. 4, the safety valve circuit module includes a third safety relay, a first air intake solenoid valve 7, a second air intake solenoid valve 8, two three-position five-way solenoid valves, and four one-way solenoid valves; the first air inlet electromagnetic valve 7 and the second air inlet electromagnetic valve 8 are respectively connected with the output end of the second safety relay; and each three-position five-way electromagnetic valve is connected with the output end of the third safety relay.
As shown in fig. 5, in an embodiment of the present invention, the gas source 5 and the gas source 5 are sequentially communicated, the end of the oil atomizer of the gas source 5 is provided with two gas ports, one is communicated with the first gas inlet solenoid valve 7, the other is communicated with the second gas inlet solenoid valve 8,
the other end of the first air inlet electromagnetic valve 7 is communicated with a shuttle valve, the outlet of the shuttle valve is connected with a one-way electromagnetic valve, and the output end of the one-way electromagnetic valve is connected with an air inlet hole of a clamp arranged on a plugging cylinder to charge an exhaust assembly; when the clamp is installed, the clamp is fixedly installed at one end of an exhaust assembly, and the other end of the exhaust assembly is provided with another corresponding clamp and a plugging cylinder; it should be noted that the clamp and the plugging cylinder arranged at the other end of the exhaust assembly are connected to a second one-way solenoid valve 13, an outlet of the second one-way solenoid valve 13 is communicated with a three-position five-way solenoid valve, the three-position five-way solenoid valve is connected to a second air intake solenoid valve 8, and the other end of the second air intake solenoid valve 8 is connected to another air port of the triple piece of the air source 5.
In the gas path diagram, when the two gas inlet solenoid valves are subjected to gas charging detection, the first gas inlet solenoid valve 7 is in an open state, the second gas inlet solenoid valve 8 is in a closed state, and gas flows out of the gas source 5, flows to the inlet 1 of the shuttle valve through the first gas inlet solenoid valve 7, flows out of the outlet 2, flows to the first one-way solenoid valve 12, and enters the exhaust assembly to be detected through the first one-way solenoid valve 12 and the clamp; because the second air inlet electromagnetic valve 8 is closed at the moment, the two three-position five-way electromagnetic valves are both in a closed state, and therefore the pressure of the whole test pipeline and the exhaust assembly is ensured; after the test is finished, the two three-position five-way electromagnetic valves are opened, and airflow flows to the first three-position five-way electromagnetic valve 10 and the second three-position five-way electromagnetic valve 11 through the third one-way valve and the fourth one-way valve respectively; after being guided and mixed by a valve plate 9 in the figure, the mixture returns to the air source 5 through a second air inlet electromagnetic valve 8.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described, it is to be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that changes, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the principles and spirit of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. An air-tightness detection workstation of an exhaust assembly comprises a test cabinet, wherein the test cabinet comprises a test industrial personal computer arranged on one side and an air-tightness detection working chamber arranged on the other side; the test industrial personal computer is characterized by comprising a PLC (programmable logic controller) and a display; the input end of the PLC is connected with the collector, and the PLC is connected with the plurality of safety relay modules; the plurality of safety relay modules comprise a grating safety circuit module and a safety valve circuit module; the display interface of the PLC is connected with a display;
a plugging cylinder is arranged in the airtight detection working chamber, and the movable end of the plugging cylinder is fixedly connected with a clamp; the output end of the PLC is connected with the plugging cylinder through a connecting electromagnetic valve to drive the plugging cylinder to act; the clamp is connected with the test pipeline; the clamp is clamped at two ends of the exhaust assembly to be tested, and a plurality of safety valves are arranged in the test pipeline; each safety valve is connected with a safety valve circuit module, and the grating safety circuit module is connected with a safety grating; the safety grating is arranged outside the cabinet body of the test cabinet; the collector is arranged in the test pipeline and used for collecting pressure in the test pipeline.
2. The exhaust assembly airtightness detection workstation according to claim 1, wherein the safety relay modules each employ a safety relay of the type SRB-E-201 ST.
3. The exhaust assembly gas tightness detection station according to claim 2, wherein said safety relay module further comprises an emergency stop circuit module; the emergency stop circuit module comprises a first safety relay; the emergency stop button and the reset button are also included; the emergency stop button is connected with a starting pin of the first safety relay; the reset button is connected with a reset pin of the first safety relay; and the output end of the first safety relay is connected with an interrupt pin of the PLC.
4. The exhaust assembly hermetic seal detection station according to claim 2, wherein the grating safety circuit module includes a second safety relay and a safety grating; and the input end of the second safety relay is connected with the safety grating.
5. The exhaust assembly gas tightness detection station according to claim 2, wherein said safety valve circuit module comprises a third safety relay, a first intake solenoid valve, a second intake solenoid valve, two three-position five-way solenoid valves, and four one-way solenoid valves; the first air inlet electromagnetic valve and the second air inlet electromagnetic valve are respectively connected with the output end of the second safety relay; and each three-position five-way electromagnetic valve is connected with the output end of a third safety relay.
6. The exhaust assembly airtightness detection workstation according to claim 5, further comprising a gas source, and the gas source employs a nitrogen gas cylinder.
7. The exhaust assembly air tightness detection station according to claim 6, wherein an air supply triplet is provided between said air supply and said air intake valve.
8. The exhaust assembly airtightness detection workstation according to claim 7, wherein the air supply triplet comprises an air filter, a pressure reducing valve and an oil sprayer connected in sequence; the air source triple piece is used for filtering, decompressing and lubricating air released by an air source.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799212.9U CN210322205U (en) | 2019-05-30 | 2019-05-30 | Airtightness detection workstation for exhaust assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920799212.9U CN210322205U (en) | 2019-05-30 | 2019-05-30 | Airtightness detection workstation for exhaust assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210322205U true CN210322205U (en) | 2020-04-14 |
Family
ID=70141018
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920799212.9U Expired - Fee Related CN210322205U (en) | 2019-05-30 | 2019-05-30 | Airtightness detection workstation for exhaust assembly |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210322205U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932993A (en) * | 2021-09-16 | 2022-01-14 | 苏州赫斯康通信科技有限公司 | Air pressure waterproof test system |
-
2019
- 2019-05-30 CN CN201920799212.9U patent/CN210322205U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113932993A (en) * | 2021-09-16 | 2022-01-14 | 苏州赫斯康通信科技有限公司 | Air pressure waterproof test system |
| CN113932993B (en) * | 2021-09-16 | 2024-03-22 | 苏州赫斯康通信科技有限公司 | Waterproof test system of atmospheric pressure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109752649A (en) | A kind of density monitor intelligent checking monitoring device and its tonifying Qi method of calibration | |
| CN202814666U (en) | Comprehensive air tightness test bench | |
| CN110005949B (en) | Automatic air-supplementing type airtight door and airtight door control method | |
| CN209910920U (en) | Device for detecting battery leakage | |
| CN107229250A (en) | A kind of malleation robot explosion protection system and its control method | |
| CN210322205U (en) | Airtightness detection workstation for exhaust assembly | |
| CN111189596A (en) | Gas relay sealing performance testing device and testing method | |
| CN102588744B (en) | On-line leakage detecting method of gas cutting-off system | |
| CN101165388A (en) | Leakage-detecting tool for gas supply system and its method | |
| CN112815228B (en) | SF (sulfur hexafluoride) 6 Intelligent air charging device of operating equipment | |
| CN114459704A (en) | Valve pressure test professional equipment | |
| CN212693184U (en) | Intelligent tester for sealing performance of electromagnetic valve | |
| CN104165739B (en) | Method for testing pressure by adoption of vertical and automatic heat collector flow channel pressure test machine | |
| CN111365615B (en) | Valve static pressure life automatic testing device based on gasification pressurization | |
| CN102147316A (en) | Tightness tester | |
| CN201060087Y (en) | Self-checking unit of leakage testing machine | |
| CN207248452U (en) | A kind of ball valve tightness test system | |
| CN114088382A (en) | Gas self-closing valve under-pressure and over-pressure measuring tool and measuring method thereof | |
| CN210400757U (en) | Full-automatic sealing test and nitrogen filling integrated machine | |
| CN204064591U (en) | The vertical automatic pressure test device of heat collector runner | |
| CN108506973B (en) | Commercial kitchen gas ignition safety control system and control method thereof | |
| CN106289676A (en) | A kind of for clutch hydraulic cylinder air-tightness automatic detection device | |
| CN217276880U (en) | Contrast detection device of multipurpose | |
| CN201522412U (en) | Gas density detecting device | |
| CN219257344U (en) | Multi-valve integrated assembly of subway wind source system and subway wind source system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200414 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |