CN208634457U - Staircase remote-controllable pressure relief device and pressure relief system - Google Patents
Staircase remote-controllable pressure relief device and pressure relief system Download PDFInfo
- Publication number
- CN208634457U CN208634457U CN201821133857.0U CN201821133857U CN208634457U CN 208634457 U CN208634457 U CN 208634457U CN 201821133857 U CN201821133857 U CN 201821133857U CN 208634457 U CN208634457 U CN 208634457U
- Authority
- CN
- China
- Prior art keywords
- staircase
- remote
- pressure relief
- driving device
- drop front
- 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
Landscapes
- Respiratory Apparatuses And Protective Means (AREA)
Abstract
The utility model relates to a kind of staircase remote-controllable pressure relief device and pressure relief systems, are related to security against fire field.Staircase remote-controllable pressure relief device includes control host, electronic relief valve and pressure sensor, and control host is electrically connected with pressure sensor.Electronic relief valve includes for being installed on the valve body outline border of wall and the hinged drop front of valve body outline border and driving device, valve body outline border has installation cavity, the opposite two sides of installation cavity have been respectively communicated with air inlet and air outlet, driving device is set to installation cavity, driving device is connect with drop front opens or closes air inlet for controlling drop front, and driving device is electrically connected with control host.Its structure is simple, low manufacture cost, while precisely can effectively carry out pressure release, and including its staircase remote-controllable pressure relief system, precisely effective pressure release can be carried out when fire occurs and controls fire by fire-fighting system.
Description
Technical field
The utility model relates to security against fire field, in particular to a kind of staircase remote-controllable pressure relief device and
Pressure relief system.
Background technique
Skyscraper smoke control system need to ensure to guarantee skyscraper cup and evacu-ation walk overbottom pressure value in 25- in fire
30pa, emergency staircase and cup overbottom pressure value guarantee when fire in forced draft machine operational process, elevator cup in 40-50pa
It can normally be opened with aisle fire resistant doorsets, while smog will not enter cup and emergency staircase by fire resistant doorsets.Practical fire hair
During life, cup and evacu-ation walk overbottom pressure value are greater than 30pa, emergency staircase and cup overbottom pressure value and are greater than 50pa, need to pass through
Relief valve carries out pressure release.
Relief valve also known as safety valve (safetyvalve) are general to install according to the operating pressure energy automatic open close of system
In protection system safety in the equipment of closed system or pipeline.Pressure-relief valve structure mainly has two major classes: spring and lever.Bullet
Spring formula refers to the active force of flap and valve seat sealed by spring.Lever is the active force by lever and weight.It is existing to let out
Valve structure is complex, and cost of manufacture is higher, at the same cannot according to practical service environment, such as when fire by design requirement into
Row precisely effective pressure release.
Utility model content
The purpose of this utility model is to provide a kind of staircase remote-controllable pressure relief devices, and structure is simple, is fabricated to
This is low, while precisely can effectively carry out pressure release.
The another object of the utility model is to provide a kind of staircase remote-controllable pressure relief system, can send out in fire
Precisely effective pressure release is carried out when raw and fire is controlled by fire-fighting system.
The embodiments of the present invention are achieved in that
A kind of staircase remote-controllable pressure relief device comprising control host, at least one is for being embedded in wall
Electronic relief valve and pressure sensor for acquiring wall pressure at both sides, control host are electrically connected use with pressure sensor
In the pressure difference for obtaining wall two sides.
Electronic relief valve includes for being installed on the valve body outline border of wall and the hinged drop front of valve body outline border and drive
Dynamic device, valve body outline border have installation cavity, and the opposite two sides of installation cavity have been respectively communicated with air inlet and air outlet, driving device
It is set to installation cavity, driving device is connect with drop front opens or closes air inlet, driving device for controlling drop front
It is electrically connected with control host.
Further, in the utility model preferred embodiment, above-mentioned driving device is retractable driving device, activity
Panel is hinged with driving device.
Further, in the utility model preferred embodiment, above-mentioned driving device includes box body, is provided in box body
Motor and chain, motor are electrically connected with control host, and chain includes first end and second end, and first end is fixed on box body
Interior, second end is hinged with drop front for stretching out box body or retraction box body, second end through motor driven.
Further, in the utility model preferred embodiment, above-mentioned box body is fixedly arranged on the bottom wall of installation cavity, active face
Plate is hinged with one end of the hinged place of valve body outline border and second end far from it.
Further, in the utility model preferred embodiment, the bottom wall of above-mentioned installation cavity is equipped with limit plate, limit plate
It is set to side of the box body far from air outlet, limit plate and box body interval are arranged, and it is remote that drop front is selectively resisted against limit plate
Side from box body.
Further, in the utility model preferred embodiment, above-mentioned further includes the sealing strip for being set to limit plate, close
Strip of paper used for sealing is located at the junction of limit plate and drop front.
Further, in the utility model preferred embodiment, above-mentioned driving device is push-rod electric machine, and push-rod electric machine is set
There is telescopic push rod, drop front is hinged far from drop front and one end of the hinged place of valve body outline border and push rod, push rod electricity
Machine is electrically connected with control host.
A kind of staircase remote-controllable pressure relief system comprising above-mentioned staircase remote-controllable pressure relief device and fire-fighting system
System, control host are electrically connected with fire-fighting system.
Further, in the utility model preferred embodiment, above-mentioned further includes positive pressure blast system, forced draft system
System includes forced draft machine, and forced draft machine is blown by forced draft mouth to elevator cup and/or staircase, forced draft machine
It is electrically connected with fire-fighting system.
Further, in the utility model preferred embodiment, above-mentioned electronic relief valve includes being installed on staircase
The first electronic relief valve on exterior wall, and the second electronic relief valve being installed on elevator cup exterior wall, the first electronic pressure release
The air outlet of valve is connected to ambient atmosphere, and the air outlet of two electronic relief valves is connected to ambient atmosphere.
The beneficial effect of the utility model embodiment is:
Compared to existing electronic relief valve, structure is simple, low manufacture cost.Pass through driving device and control host electricity
Connection, while cooperating with control host and pressure sensor, pressure release can be effectively carried out with accurate remote, improve the peace of pressure release
Quan Xing.And it controls host to be electrically connected with fire-fighting system, precisely effective pressure release can be carried out when fire occurs and leads to
Cross fire-fighting system control fire.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram for the electronic relief valve that the utility model embodiment 1 provides；
Fig. 2 is the structural schematic diagram that the electronic relief valve of the utility model embodiment is opened；
Fig. 3 is the structural schematic diagram that the electronic relief valve of the utility model embodiment is closed；
Fig. 4 is the structural schematic diagram for the staircase remote-controllable pressure relief system that the utility model embodiment 2 provides.
Icon: 10- staircase remote-controllable pressure relief device；100- controls host；110- pressure sensor；120- is electronic to be let out
Pressure valve；121- valve body outline border；1211- installation cavity；1213- air inlet；1215- air outlet；123- drop front；The gap 1231-；
1233- retention bead；125- driving device；126- box body；127- chain；1271- second end；128- limit plate；20- staircase
Remote-controllable pressure relief system；210- fire-fighting system；220- positive pressure blast system.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, or
The utility model product using when the orientation or positional relationship usually put, be merely for convenience of description the utility model and letter
Change description, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific orientation construct and
Operation, therefore should not be understood as limiting the present invention.In addition, term " first ", " second ", " third " etc. are only used for area
Divide description, is not understood to indicate or imply relative importance.
In addition, the terms such as term "horizontal", "vertical", " pendency " are not offered as requiring component abswolute level or pendency, and
It is that can be slightly tilted.It is not to indicate the structure if "horizontal" only refers to that its direction is more horizontal with respect to for "vertical"
It has to fully horizontally, but can be slightly tilted.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection,
Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through
It is indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, it can be managed with concrete condition
Solve the concrete meaning of above-mentioned term in the present invention.
Embodiment 1
The present embodiment provides a kind of staircase remote-controllable pressure relief devices 10 comprising control host 100, electronic relief valve
120 and pressure sensor 110.
Controlling host 100 is, for example, computer, has the data processor (not shown) for handling data.
Electronic relief valve 120 is for being embedded in wall, for carrying out pressure release to wherein side.Referring to Fig. 1, electronic let out
Pressure valve 120 includes valve body outline border 121, drop front 123 and driving device 125.
Wherein, valve body outline border 121 has installation cavity 1211,1211 phase of installation cavity for being installed on wall, valve body outline border 121
Pair two sides be respectively communicated with air inlet 1213 and air outlet 1215, wherein in actual installation, air inlet 1213 and air-supply
Mouth 1215 is located at the two sides of wall.Optionally, air outlet 1215 is blinds air outlet 1215, can further support valve by blinds
External frame 121, improves stability, while preventing extraneous dust from entering installation cavity 1211.Wherein, optionally, blinds air outlet
1215 is set valvular power-operated shutter air outlet 1215, and wherein the valve is electrically connected with the data processor of control host 100,
For Remote Open or blinds air outlet 1215 is closed, it can also be by opening or closing blinds air outlet manually using the valve
1215, wherein this sets valvular power-operated shutter air outlet 1215 as existing apparatus, does not do specifically repeat herein.
Please refer to Fig. 2 and Fig. 3, one end of drop front 123 and valve body outline border 121 are hinged, for selectivity cover in
Air inlet 1213 is used to open or closes air inlet 1213.In the present embodiment, drop front 123 is embedded at air inlet 1213,
It is after closing air inlet 1213, side of the drop front 123 far from installation cavity 1211 and air inlet 1213 are located at valve body outline border
The side wall of 121 side flushes, and is convenient to clean and prevents to damage.At this point, the bottom wall of drop front 123 and installation cavity 1211 has
There is certain gap 1231, smoothly seals air inlet 1213 for drop front 123.
Optionally, drop front 123 is equipped with the limit convex towards 1211 protrusion of installation cavity close to the side of installation cavity 1211
1233 are played, the outer wall of retention bead 1233 is flushed with the side wall of the drop front 123, and retention bead 1233 is located at drop front
123, which can effectively limit drop front 123 close to the part of itself and the junction of valve body outline border 121, moves in installation cavity 1211
Portion.
Driving device 125 is set to installation cavity 1211, and driving device 125 is connect with drop front 123 for controlling activity
Panel 123 opens or closes air inlet 1213, and specifically, driving device 125 is retractable driving device 125, drop front 123
It is hinged with driving device 125.Since the driving force of driving device 125 is linear drives, pass through drop front 123 and driving device
125 is hinged, so that driving device 125 and the angle of the junction of drop front 123 constantly become larger, so that drop front
123 can open or close air inlet 1213.Driving device 125 is electrically connected with the data processor of control host 100.
In the present embodiment, driving device 125 includes box body 126, is provided with motor (not shown) and chain in box body 126
127。
Specifically, chain 127 includes first end (not shown) and second end 1271, and first end is fixed in box body 126,
For second end 1271 through motor driven for stretching out box body 126 or retraction box body 126, second end 1271 and drop front 123 are hinged.
Motor is electrically connected with the data processor of control host 100, and the motion state of motor is controlled by control host 100, and then is controlled
The size of air inlet 1213 processed, and then control the time of pressure release and the size of pressure release.
In order to further increase the precision that driving device 125 controls drop front 123, and then improve the essence of control pressure release
Accuracy, please continue to refer to Fig. 1, box body 126 is fixedly arranged on the bottom wall of installation cavity 1211, and drop front 123 is far from itself and valve body outline border
One end of 121 hinged place and second end 1271 are hinged.
In actual use process, since the process that chain 127 stretches out box body 126 or is retracted box body 126 can generate centainly
Stress, generate certain loss to it, and then reduce the precision of pressure release, concurrently there are drop front 123 and be directly pulled
To accommodating chamber, the problem of can not effectively sealing air inlet 1213, therefore, the bottom wall of installation cavity 1211, are equipped with limit plate 128, limit
Position plate 128 is set to side of the box body 126 far from air outlet 1215, and it is separate that 123 selectivity of drop front is resisted against limit plate 128
The side of box body 126 effectively prevent drop front 123 to be directly pulled in accommodating chamber by the setting of limit plate 128.Together
When limit plate 128 and the interval of box body 126 be arranged, and then box body 126 is stretched out in the part of second end 1271, can be used when stopping
Property under the action of shock limit plate 128 gently, forming second end 1271 is vibrated, and then discharges stress.And limit plate
128 with 1233 tight abutment of retention bead, effectively improve the accuracy of pressure release.
Wherein, limit plate 128 can be along the circumferential direction setting of installation cavity 1211, the present embodiment, and limit plate 128 is only arranged at
The bottom wall of installation cavity 1211, structure is more simple, while not influencing specifically to use.
In order to guarantee air inlet 1213 close when leakproofness, further include be set to limit plate 128 sealing strip (figure not
Show), sealing strip is located at the junction of limit plate 128 and drop front 123.Wherein, the length of limit plate 128 is greater than gap 1231
Length, the length of limit plate 128 herein refers to the junction of limit plate 128 and 1211 bottom wall of installation cavity to it far from installation
The distance between one end of 1211 bottom wall of chamber, the length in gap 1231 refer to the gap 1231 along the length direction of limit plate 128
Length.
Optionally, in the utility model other embodiments, driving device 125 is push-rod electric machine, and push-rod electric machine, which is equipped with, to be stretched
The push rod (not shown) of contracting, drop front 123 one end and push rod far from drop front 123 and the hinged place of valve body outline border 121
Hingedly, push-rod electric machine is electrically connected with the data processor of control host 100.
Pressure sensor 110 controls the data processor and pressure sensor of host 100 for acquiring wall pressure at both sides
110 are electrically connected the pressure for receiving wall two sides, and by calculating, obtain the overbottom pressure value between cup and evacu-ation walk, dredge
The overbottom pressure value between staircase and cup is dissipated, is prevented in the case of fire, smog invades the smoke proof staircase of escape route.
To sum up, the setting of staircase remote-controllable pressure relief device 10 acquires wall pressure at both sides, leads to by remotely controlling
It crosses control host 100 and calculates pressure difference, when pressure difference is unsatisfactory for the requirement of skyscraper smoke control system, such as cup is walked with evacuation
Road overbottom pressure value is greater than 30pa, emergency staircase and cup overbottom pressure value and is greater than 50pa, carries out pressure release.Pass through control host 100 simultaneously
The state of motor is adjusted, and then controls opening degree and the folding time of drop front 123, effectively progress pressure release.
It is noted that pressure release is carried out from high pressure to low pressure, therefore, air inlet 1213 is located at the side of high pressure, outlet air
Mouth is located at the side of low pressure, and then effective pressure release, while preventing flue gas from entering high-voltage end from one end of low pressure in pressure leak process.
Embodiment 2
Referring to figure 4., the present embodiment provides a kind of staircase remote-controllable pressure relief systems 20 comprising embodiment 1 provides
Staircase remote-controllable pressure relief device 10, fire-fighting system 210 and positive pressure blast system 220.
Wherein, the data processor for controlling host 100 is electrically connected with fire-fighting system 210, is sent out for receiving fire-fighting system 210
Fire-fighting signal out, specific setting see the prior art.
Positive pressure blast system 220 includes forced draft machine (not shown), and forced draft machine passes through the (figure of forced draft mouth 1215
Do not show) it blows to elevator cup and/or staircase, forced draft machine is electrically connected with fire-fighting system 210.
Electronic relief valve 120 includes the first electronic 120 (not shown) of relief valve being installed on the exterior wall of staircase, and
Electronic 120 (not shown) of relief valve of second be installed on elevator cup exterior wall, the air outlet 1215 of the first electronic relief valve 120
It is connected to ambient atmosphere, the air outlet 1215 of the second electronic relief valve 120 is connected to ambient atmosphere.Under the conditions of the setting, can have
Effect carries out the adjusting of the pressure of elevator cup, staircase, while preventing flue gas from pouring into.Wherein, the number of the first electronic relief valve 120
Amount is at least one, such as 1,3,5 or 10 etc., the quantity of the second electronic relief valve 120 is at least one, such as 1,
3,5 or 10 etc., meanwhile, at least one the first electronic interval of relief valve 120 setting, at least one second electronic relief valve
120 interval settings, those skilled in the art can carry out the selection of specific setting position according to actual needs.
The working principle of staircase remote-controllable pressure relief system 20 is:
When there is fire-fighting signal i.e. fire to occur, the overbottom pressure between cup and evacu-ation walk is obtained by controlling host 100,
By the overbottom pressure value, (the overbottom pressure value of cup and evacu-ation walk that is to say the pressure difference of cup and evacu-ation walk in 25-30pa with setting value
Value is in 25-30pa) it is compared, when cup is greater than 30pa with evacu-ation walk overbottom pressure value, the control control first of host 100 is electronic
Relief valve 120 works, and by cup pressure release into atmosphere, is during which constantly monitored, until cup and evacu-ation walk overbottom pressure value are in 25-
30pa closes the first electronic relief valve 120.
Meanwhile when there is fire-fighting signal i.e. fire to occur, obtained more than emergency staircase and cup by controlling host 100
Pressure, the overbottom pressure value and setting value (emergency staircase is with cup overbottom pressure value in 40-50pa) are compared, when emergency staircase and
When cup overbottom pressure value is greater than 50pa, control host 100 the second electronic relief valve 120 of control works, by cup pressure release into atmosphere,
Period is constantly monitored, until emergency staircase and cup overbottom pressure value close the second electronic relief valve 120 in 40-50pa.Pass through
Aforesaid operations, when the guarantee fire in forced draft machine operational process, elevator cup can be opened normally with aisle fire resistant doorsets, simultaneously
Smog will not enter cup and emergency staircase by fire resistant doorsets.
To sum up, staircase remote-controllable pressure relief device provided by the utility model, structure is simple, low manufacture cost, together
When precisely can effectively carry out pressure release.Staircase remote-controllable pressure release system including above-mentioned staircase remote-controllable pressure relief device
System can carry out precisely effective pressure release when fire occurs and control fire by fire-fighting system.
The above is only the preferred embodiments of the utility model, are not intended to limit the utility model, for this field
Technical staff for, various modifications and changes may be made to the present invention.Within the spirit and principle of the utility model,
Any modification, equivalent replacement, improvement and so on should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of staircase remote-controllable pressure relief device, which is characterized in that including control host, at least one is for being embedded at wall
Electronic relief valve in body and the pressure sensor for acquiring the wall pressure at both sides, the control host with it is described
Pressure sensor is electrically connected the pressure difference for obtaining the wall two sides；
The electronic relief valve includes for being installed on the valve body outline border of the wall and the hinged active face of the valve body outline border
Plate and driving device, the valve body outline border have installation cavity, the opposite two sides of the installation cavity be respectively communicated with air inlet with
And air outlet, the driving device are set to the installation cavity, the driving device is connect with the drop front for controlling
The drop front opens or closes the air inlet, and the driving device is electrically connected with the control host.
2. staircase remote-controllable pressure relief device according to claim 1, which is characterized in that the driving device is flexible
Formula driving device, the drop front and the driving device are hinged.
3. staircase remote-controllable pressure relief device according to claim 2, which is characterized in that the driving device includes box
Body is provided with motor and chain in the box body, and the motor is electrically connected with the control host, and the chain includes first
End and second end, the first end are fixed in the box body, and the second end is described for stretching out through the motor driven
Box body or the retraction box body, the second end and the drop front are hinged.
4. staircase remote-controllable pressure relief device according to claim 3, which is characterized in that the box body is fixedly arranged on described
The bottom wall of installation cavity, the drop front are hinged with one end of the hinged place of the valve body outline border and the second end far from it.
5. staircase remote-controllable pressure relief device according to claim 3, which is characterized in that the bottom wall of the installation cavity is set
There is limit plate, the limit plate is set to side of the box body far from the air outlet, between the limit plate and the box body
Every setting, the drop front is selectively resisted against side of the limit plate far from the box body.
6. staircase remote-controllable pressure relief device according to claim 5, which is characterized in that further include being set to the limit
The sealing strip of position plate, the sealing strip are located at the junction of the limit plate and the drop front.
7. staircase remote-controllable pressure relief device according to claim 3, which is characterized in that the driving device is push rod
Motor, the push-rod electric machine are equipped with telescopic push rod, and the drop front is far from the drop front and the valve body outline border
Hinged place one end and the push rod it is hinged, the push-rod electric machine is electrically connected with the control host.
8. a kind of staircase remote-controllable pressure relief system, which is characterized in that including staircase described in claim 1-7 any one
Remote-controllable pressure relief device and fire-fighting system, the control host are electrically connected with the fire-fighting system.
9. staircase remote-controllable pressure relief system according to claim 8, which is characterized in that further include forced draft system
System, the positive pressure blast system includes forced draft machine, the forced draft machine by forced draft mouth to elevator cup and/or
Staircase air-supply, the forced draft machine are electrically connected with the fire-fighting system.
10. staircase remote-controllable pressure relief system according to claim 9, which is characterized in that the electronic relief valve packet
The electronic relief valve of first be installed on the exterior wall of staircase is included, and the second electronic pressure release being installed on elevator cup exterior wall
The air outlet of valve, the first electronic relief valve is connected to ambient atmosphere, and the air outlet of the two electronic relief valve and the external world are big
Gas connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821133857.0U CN208634457U (en) | 2018-07-17 | 2018-07-17 | Staircase remote-controllable pressure relief device and pressure relief system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821133857.0U CN208634457U (en) | 2018-07-17 | 2018-07-17 | Staircase remote-controllable pressure relief device and pressure relief system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208634457U true CN208634457U (en) | 2019-03-22 |
Family
ID=65739186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821133857.0U Active CN208634457U (en) | 2018-07-17 | 2018-07-17 | Staircase remote-controllable pressure relief device and pressure relief system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208634457U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644435A (en) * | 2018-07-17 | 2018-10-12 | 广州市泰昌实业有限公司 | Staircase remote-controllable pressure relief device and pressure relief system |
-
2018
- 2018-07-17 CN CN201821133857.0U patent/CN208634457U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108644435A (en) * | 2018-07-17 | 2018-10-12 | 广州市泰昌实业有限公司 | Staircase remote-controllable pressure relief device and pressure relief system |
| CN108644435B (en) * | 2018-07-17 | 2024-03-19 | 广州市泰昌实业有限公司 | Remotely controllable pressure relief device and pressure relief system for stairwell |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108644435A (en) | Staircase remote-controllable pressure relief device and pressure relief system | |
| CN208634457U (en) | Staircase remote-controllable pressure relief device and pressure relief system | |
| CN108105929B (en) | Prefabricated cabin | |
| CN104818931B (en) | A kind of operating room air-flow obstruct door | |
| CN103572833B (en) | The pressure relief device of pneumatic membrane building | |
| CN115243494B (en) | Efficient intelligent TSP comprehensive sampler and application method thereof | |
| KR102622389B1 (en) | Ventilation System for Reducing Damage from Explosions in Underground Hydrogen Facilities | |
| CN218761462U (en) | Fireproof valve for tunnel exhaust duct | |
| CN206753344U (en) | One kind is easy to ventilation window | |
| WO2014161506A1 (en) | Method of using translating window capable of venting harmful oil fume in kitchen air | |
| CN215269047U (en) | 5G communication module for realizing moisture prevention by utilizing kinetic energy | |
| CN205496247U (en) | Intelligent fume chamber that can remote control | |
| CN208704689U (en) | A kind of doors and windows sealing device for the detection of door and window resisting wind press capacity | |
| CN206940154U (en) | Anti-fall elevator | |
| CN112610274A (en) | Reserve explosion vent device of colliery inclined shaft | |
| CN209385001U (en) | A kind of high efficiency exhausting duct single layer blinds band valve | |
| CN109723486A (en) | A kind of explosion-proof door of coal miine vertical shaft with auto-reset function | |
| CN209066808U (en) | A kind of multi-blade flue mouth | |
| CN203822718U (en) | Exhaust fan dust cover and dust-proof exhaust fan | |
| CN205063698U (en) | A non -pressure safety explosion vent for negative pressure formula dust remover | |
| CN217681405U (en) | Rubber tube type explosion-proof wave valve capable of resisting negative pressure impact | |
| CN212068084U (en) | Dustproof device for precision instrument | |
| CN219660125U (en) | Protective cover of air release machine controller | |
| CN210344483U (en) | Pneumatic piston type actuator with emergency device | |
| CN206786976U (en) | Intelligence control accident cigarette machine for fire-fighting system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |