CN214390204U - Automatic explosion venting device of low-pressure explosion-proof test box - Google Patents
Automatic explosion venting device of low-pressure explosion-proof test box Download PDFInfo
- Publication number
- CN214390204U CN214390204U CN202023022687.9U CN202023022687U CN214390204U CN 214390204 U CN214390204 U CN 214390204U CN 202023022687 U CN202023022687 U CN 202023022687U CN 214390204 U CN214390204 U CN 214390204U
- Authority
- CN
- China
- Prior art keywords
- test box
- cylinder
- pressure
- explosion
- control module
- 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.)
- Active
Links
Images
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides an automatic explosion venting device of low atmospheric pressure explosion-proof test box, including rotatory cylinder that compresses tightly, the closing plate, fixed hinge, sealing flange, the proof box heat preservation, the cylinder depression bar, pressure monitoring module and control module, the cladding has the proof box stainless steel inner bag in the proof box heat preservation, proof box stainless steel inner bag one end is equipped with sealing flange, the sealing flange outside is equipped with the closing plate, the closing plate downside is equipped with rotatory cylinder that compresses tightly, the rotatory tip that compresses tightly the cylinder is equipped with the cylinder depression bar, the cylinder depression bar sets up with the closing plate terminal surface is perpendicular, the rotatory cylinder that compresses tightly is controlled the action by control module, pressure monitoring module is connected with the control module electricity. The inside and outside pressure differential of box and the dead weight characteristics of closing plate have been realized in time letting out automatically to explode and automatic recovery ingeniously to this device, and simple structure is practical, and whole let out explodes and the recovery process does not have artificial intervention completely, has improved experimental security, and let out explode automatic recovery after accomplishing, need not to change any spare part, repeatedly usable.
Description
Technical Field
The utility model relates to a protector especially relates to an automatic explosion-proof device of letting out of low atmospheric pressure explosion-proof test case.
Background
The low-pressure explosion-proof test box belongs to a test box type with a higher design difficulty coefficient, and has the difficulty that the test box of the type not only meets the test requirement of the conventional low pressure, but also needs to be subjected to explosion-proof and explosion-venting design. The explosion venting design ensures the sealing performance of the box body and also considers the problems of timely automatic explosion venting in the test process, automatic recovery after explosion venting, repeated use of the explosion venting device and structural strength of the explosion venting device. Therefore, the automatic explosion venting device of the low-pressure explosion-proof test box is a difficult point in design. The sealing performance and the structural strength of an explosion venting device of a conventional high-low temperature and humidity explosion-proof test box in the industry at present cannot meet the use requirement of a low-pressure test box, and the related parameters of the low-pressure test box cannot meet the design requirement due to the fact that air leakage is easily generated due to poor sealing performance; when the air pressure in the box with poor structural strength is lower, the explosion venting device is easy to generate structural deformation under the action of the difference of internal and external pressures in the box body, so that sealing failure is caused, and even the explosion venting device is damaged, therefore, the novel explosion venting device designed for the low-air-pressure explosion-proof test box is required to meet the explosion venting requirement of the low-air-pressure explosion-proof test box.
Disclosure of Invention
According to the technical problem, the utility model provides an automatic explosion venting device of a low-pressure explosion-proof test box, which comprises a rotary compression cylinder, a sealing plate, a flexible sealing element, a fixed hinge, a sealing flange, a stainless steel inner container of the test box, a heating wire, a test box heat preservation layer, a cylinder pressure rod, an air source triple piece, a two-position four-way solenoid valve, a pressure monitoring module and a control module, wherein the stainless steel inner container of the test box is covered in the test box heat preservation layer, the heating wire is arranged between the test box heat preservation layer and the stainless steel inner container of the test box, one end of the stainless steel inner container of the test box is provided with the sealing flange, the sealing plate is arranged outside the sealing flange, the top of the sealing plate is hinged with the sealing flange through the fixed hinge, the flexible sealing element is arranged on the end face of the sealing plate, the rotary compression cylinder is arranged on the lower side of the sealing plate, and the cylinder pressure rod is arranged at the end part of the rotary compression cylinder, the air cylinder pressure bar is perpendicular to the end face of the sealing plate and is in close contact with the end face of the sealing plate;
the rotary compaction cylinder is connected with an air source through a two-position four-way electromagnetic valve and an air source triple piece, the rotary compaction cylinder is controlled to act by a control module, and the pressure monitoring module is electrically connected with the control module.
Furthermore, the flexible sealing element is a silica gel plate, and the silica gel plate and the sealing plate are coated with silica gel and fixed along the circumferential surface by M4 screws.
Furthermore, the silica gel plate is provided with N layers from inside to outside, and N is more than or equal to 1.
Furthermore, the stainless steel inner container of the test box is made of 304 stainless steel, and the thickness of the stress surface is not less than 10 mm.
Furthermore, the control module adopts a single chip microcomputer control module or a PLC control module.
The utility model has the advantages that: the utility model relates to an automatic explosion venting device of a low-pressure explosion-proof test box, wherein a rotary compression cylinder is adopted to compress a sealing plate in the earlier stage of the whole explosion venting process, and a high-low temperature resistant flexible sealing element is arranged to ensure the sealing performance; after the internal air pressure of the middle-term test box is lower than a set value, the rotary pressing cylinder does not participate in pressing and sealing, and the sealing effect is ensured by utilizing the difference between the internal pressure and the external pressure of the box body; in the explosion venting process, the sealing plate is opened by using the impact force generated by explosion, so that the timeliness of explosion venting is ensured; and in the later stage, the dead weight of the sealing plate, the pressure monitoring module and the control module are utilized to control the rotary compression cylinder to act so that the explosion venting device is recovered to the initial state. The inside and outside pressure differential of box and the dead weight characteristics of closing plate have been realized in time letting out automatically to explode and automatic recovery ingeniously to this device, and device simple structure is practical, and whole letting out explodes and the recovery process does not have artificial intervention completely, has improved experimental security, and lets out to explode automatic recovery after accomplishing, need not to change any spare part, repeatedly usable.
Drawings
FIG. 1 is a side view of the main structure of the present invention;
FIG. 2 is a right side view of the main structure of the present invention;
fig. 3 is an electrical control schematic diagram of the present invention.
As shown in the figure, the device comprises a rotary compaction cylinder-1, a sealing plate-2, a flexible sealing piece-3, a fixed hinge-4, a sealing flange-5, a stainless steel inner container-6 of a test box, a heating wire-7, a heat preservation layer-8 of the test box, a cylinder pressure rod-9, an air source-10, an air source triple-piece-11 and a two-position four-way electromagnetic valve-12.
Detailed Description
Example 1:
according to the technical problem, the utility model provides an automatic explosion venting device of a low-pressure explosion-proof test box, which comprises a rotary compression cylinder 1, a sealing plate 2, a flexible sealing element 3, a fixed hinge 4, a sealing flange 5, a stainless steel inner container 6 of the test box, a heating wire 7, a heat preservation layer 8 of the test box, a cylinder pressure lever 9, an air source 10, an air source triple piece 11, a two-position four-way electromagnetic valve 12, a pressure monitoring module and a control module, wherein the stainless steel inner container 6 of the test box is covered in the heat preservation layer 8 of the test box, the heating wire 7 is arranged between the heat preservation layer 8 of the test box and the stainless steel inner container 6 of the test box, one end of the stainless steel inner container 6 of the test box is provided with the sealing flange 5, the sealing plate 2 is arranged on the outer side of the sealing flange 5, the top of the sealing plate 2 is hinged with the sealing flange 5 through the fixed hinge 4, the end surface of the sealing plate 2 contacted with the sealing flange 5 is provided with the flexible sealing element 3, a rotary compaction cylinder 1 is arranged on the lower side of the sealing plate 2, a cylinder pressure rod 9 is arranged at the end part of the rotary compaction cylinder 1, the cylinder pressure rod 9 is perpendicular to the end surface of the sealing plate 2, and the cylinder pressure rod 9 is in close contact with the end surface of the sealing plate 2;
the rotary compaction cylinder 1 is connected with an air source 10 through a two-position four-way electromagnetic valve 12 and an air source triple piece 11, the rotary compaction cylinder 1 is controlled by a control module to act, and the pressure monitoring module is electrically connected with the control module.
Further, flexible sealing member 3 adopts the silica gel board, scribble between silica gel board and the closing plate 2 and smear silica gel and adopt M4 screw to avoid sealing flange 5 terminal surface to fix along the periphery.
Furthermore, the silica gel plate is provided with N layers from inside to outside, and N is more than or equal to 1.
Further, the stainless steel inner container 6 of the test box is made of 304 stainless steel, and the thickness of the stress surface is not less than 10 mm.
Furthermore, the control module adopts a single chip microcomputer control module or a PLC control module.
Example 2:
referring to the attached drawing 1, in order to reduce the processing cost, a standard CF200 straight-through vacuum flange made of 304 stainless steel is directly selected as a sealing flange 5, a blind plate of the matched CF200 vacuum flange is adopted as a sealing plate 2, a countersunk head M4 bolt made of 304 and silica gel are adopted at the sealing end of the blind plate to fix a silica gel plate 3 with the thickness of 3mm for sealing, the silica gel plate is prevented from being sucked into a box body when the air pressure in the box is too low, the length of the sealing flange 5 is determined according to the thickness of a heat-insulating layer 8 of a test box and the size of a hinge 4, and the condition that the sealing plate 2 does not interfere with the box body in the opening and closing process is met; fully welding a straight-through end of a sealing flange 5 and a pre-opened round hole on a stainless steel inner container 6 of a test box to prevent air leakage, winding a heating wire 7 on the straight-through part in advance to prevent cold energy transfer, extending the flange end out of the box, fixing a sealing plate 2 and the sealing flange 5, welding and installing a fixed hinge 4, wherein full welding is required to ensure structural strength, and the installation position of the fixed hinge 4 is arranged at the upper side of the sealing flange 5 and ensures that the sealing plate 2 is smoothly opened and closed; the rotary compressing cylinder 1 is arranged below the sealing flange 5, the length and the position of a cylinder pressing rod 9 of the rotary compressing cylinder 1 are adjusted according to actual conditions, and the cylinder pressing rod 9 is guaranteed not to interfere with the sealing plate 2 in the rotating process.
An air source triple piece 11 and a two-position four-way electromagnetic valve 12 are reasonably selected according to the type of the rotary compaction cylinder 1 and are connected to a pressure monitoring module, a control module and an air source 10.
Example 3:
in the test process, the air pressure value in the box body is monitored in real time, the action time of the rotary compressing cylinder 1 in the explosion venting device is reasonably set, and when the air pressure in the box body is higher than a set value, the rotary compressing cylinder 1 is controlled to be in a compressing working state by a control module; when the pressure in the box body is continuously reduced until the pressure is lower than a set value, the rotating pressing cylinder 1 acts to rotate the pressing rod by 90 degrees to be separated from the sealing plate 2, and the sealing plate 2 of the explosion venting device is tightly adsorbed on the sealing end face of the box body under the action of the difference of the pressure inside and outside the box body, so that the sealing performance of the device is ensured; when explosion happens, the air pressure in the box body is increased, and the sealing plate 2 is opened under strong explosion impact to finish explosion venting; the sealing plate 2 is fixed through the fixed hinge 4, and the sealing plate recovers to the original position under the influence of self dead weight after explosion venting is finished, and the pressure difference inside and outside the box body is 0, and the pressure in the box body is higher than a set value, and the sealing plate 2 is compressed tightly by the action of the rotary compression cylinder 1 under the control of the PLC, and is recovered to the initial state. The whole explosion venting and recovering process is completely free of manual intervention, the test safety is improved, only the rotary pressing cylinder 1 and the sealing plate 2 participate in the explosion venting process in the action process of the whole explosion venting device, the explosion venting is automatically recovered after the explosion venting is completed, any part does not need to be replaced, and the explosion venting and recovering device can be repeatedly used.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications can be made without departing from the principle of the present invention, and these modifications should also be regarded as the protection scope of the present invention.
Claims (5)
1. An automatic explosion venting device of a low-pressure explosion-proof test box is characterized by comprising a rotary compression air cylinder, a sealing plate, a flexible sealing element, a fixed hinge, a sealing flange, a stainless steel inner container of the test box, a heating wire, a test box heat-insulating layer, an air cylinder compression bar, an air source triple piece, a two-position four-way electromagnetic valve, a pressure monitoring module and a control module, wherein the stainless steel inner container of the test box is covered in the test box heat-insulating layer, the heating wire is arranged between the test box heat-insulating layer and the stainless steel inner container of the test box, the sealing flange is arranged at one end of the stainless steel inner container of the test box, the sealing plate is arranged on the outer side of the sealing flange, the top of the sealing plate is hinged to the sealing flange through the fixed hinge, the flexible sealing element is arranged on the end face of the sealing plate, the rotary compression air cylinder is arranged on the lower side of the sealing plate, and the air cylinder compression bar is arranged at the end part of the rotary compression air cylinder, the air cylinder pressure bar is perpendicular to the end face of the sealing plate and is in close contact with the end face of the sealing plate;
the rotary compaction cylinder is connected with an air source through a two-position four-way electromagnetic valve and an air source triple piece, the rotary compaction cylinder is controlled to act by a control module, and the pressure monitoring module is electrically connected with the control module.
2. The automatic explosion venting device of the low-pressure explosion-proof test box according to claim 1, wherein the flexible sealing element is a silicone plate, and the silicone plate and the sealing plate are coated with silicone rubber and fixed along the circumferential surface by M4 screws.
3. The automatic explosion venting device of the low-pressure explosion-proof test box according to claim 2, wherein the silica gel plate is provided with N layers from inside to outside, wherein N is more than or equal to 1.
4. The automatic explosion venting device of the low-pressure explosion-proof test chamber as claimed in claim 1, wherein the stainless steel inner container of the test chamber is made of 304 stainless steel, and the thickness of the bearing surface is not less than 10 mm.
5. The automatic explosion venting device of the low-pressure explosion-proof test box according to claim 1, wherein the control module adopts a single chip microcomputer control module or a PLC control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023022687.9U CN214390204U (en) | 2020-12-15 | 2020-12-15 | Automatic explosion venting device of low-pressure explosion-proof test box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023022687.9U CN214390204U (en) | 2020-12-15 | 2020-12-15 | Automatic explosion venting device of low-pressure explosion-proof test box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214390204U true CN214390204U (en) | 2021-10-15 |
Family
ID=78038542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023022687.9U Active CN214390204U (en) | 2020-12-15 | 2020-12-15 | Automatic explosion venting device of low-pressure explosion-proof test box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214390204U (en) |
-
2020
- 2020-12-15 CN CN202023022687.9U patent/CN214390204U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214390204U (en) | Automatic explosion venting device of low-pressure explosion-proof test box | |
| CN201457990U (en) | Vacuum compressed bag | |
| CN112691707A (en) | Automatic explosion venting device of low-pressure explosion-proof test box | |
| CN203308341U (en) | Door body thermal insulation sealing structure | |
| CN210770473U (en) | Safety valve with pneumatic device | |
| CN209340621U (en) | A kind of push type Manual air-release valves | |
| CN205102989U (en) | Gas tightness automatic checkout device for battery | |
| CN209309332U (en) | A kind of vacuum tank Manual air-release valves | |
| CN208400991U (en) | A kind of device for lithium ion battery safety detection | |
| CN108258341B (en) | Leak detecting device for battery and battery leak hunting method | |
| CN104864138B (en) | A kind of breaking piece of natural gas cylinder | |
| CN208996601U (en) | Cold-hot wind completely cuts off door | |
| CN209329011U (en) | A kind of battery pressure relief valve body | |
| CN214466365U (en) | Preset safety device for gate valve generating boiler effect | |
| CN2389362Y (en) | Automatic sealing vacuum gauge pipe apparatus | |
| CN201902565U (en) | Stepless adjustable mechanical servo switch air intake valve | |
| CN220253418U (en) | Battery pack pressure balance humidity control valve | |
| CN207893188U (en) | Explosion venting valve | |
| CN215179536U (en) | Isolation cabin suitable for walk-in low-pressure environment box | |
| CN205937358U (en) | Service machine is shielded to multifunctional mobile phone | |
| CN219588990U (en) | Explosion door of boiler | |
| CN208010992U (en) | A kind of RTO positive and negative pressures explosion venting device component | |
| CN219252169U (en) | Blowing heat adsorption type dryer | |
| CN219613605U (en) | Steaming cabinet with good sealing performance | |
| CN109578411A (en) | A kind of metal cap monaural seal traveling self-locking nut |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |