CN211629651U - Improve factor of safety's explosion-proof block terminal - Google Patents
Improve factor of safety's explosion-proof block terminal Download PDFInfo
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- CN211629651U CN211629651U CN202020540497.7U CN202020540497U CN211629651U CN 211629651 U CN211629651 U CN 211629651U CN 202020540497 U CN202020540497 U CN 202020540497U CN 211629651 U CN211629651 U CN 211629651U
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Abstract
The utility model discloses an improve factor of safety's explosion-proof block terminal relates to block terminal technical field, aims at solving explosion-proof block terminal and uses under the inflammable gas environment and when reaching certain concentration, can produce the electric spark when opening and shutting because the inside switch of explosion-proof block terminal, leads to inflammable gas detonation's technical problem easily, and its technical scheme main points are including the box, box internally mounted has the concentration detection device who is used for detecting inflammable gas concentration, the concentration detection device electricity is connected with controlling means, the controlling means electricity is connected with the scavenging pump, the scavenging pump is connected with the intake pipe, the intake pipe sets up in outdoor clean department of air. The air is replaced, and therefore the detonation probability of the explosion-proof distribution box is greatly reduced.
Description
Technical Field
The utility model belongs to the technical field of the technique of block terminal and specifically relates to an improve explosion-proof block terminal of factor of safety.
Background
The explosion-proof distribution box has explosion-proof performance.
The current chinese patent that authorizes bulletin number is CN203967560U discloses an explosion-proof distribution box, including the box, the anterior opening of this box has left door frame and right door frame, and this left door frame has right-hand member open-ended slide chamber, and this slide intracavity slides and is provided with the door plant, the right side limit of door plant and the left side limit of this right door frame are the inclined plane form that inclination is the same, and simultaneously, this box internal fixation has the motor, is fixed with the worm on the power output shaft of this motor, and this worm is furnished with the turbine, and this turbine meshing has the rack, thereby this rack is located this door plant and makes door plant and door frame be difficult for not hard up by oneself.
The above prior art solutions have the following drawbacks: when the explosion-proof distribution box is applied to an inflammable gas environment and reaches a certain concentration, electric sparks are generated when a switch in the explosion-proof distribution box is opened and closed, inflammable gas deflagration is easily caused, and therefore improvement is needed.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide an improve factor of safety's explosion-proof block terminal, it has and replaces the air to reduce the advantage that explosion-proof block terminal takes place the detonation probability greatly.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
the utility model provides an improve factor of safety's explosion-proof block terminal, includes the box, box internally mounted has the concentration detection device who is used for detecting combustible gas concentration, concentration detection device electricity is connected with controlling means, the controlling means electricity is connected with the scavenging pump, the scavenging pump is connected with the intake pipe, the intake pipe sets up in outdoor clean department of air.
By adopting the technical scheme, the concentration detection device detects the concentration of the combustible gas in the box body and feeds back the detected data to the control device, the control device sends a signal to the scavenging pump when the concentration of the combustible gas is higher than a preset value, and the scavenging pump pumps clean air into the box body from an outdoor air clean position through the air inlet pipe; because the box is not inclosed, under the effect of pumping, the inside atmospheric pressure of box rises, so combustible gas can be replaced the box by clean gas, has reduced the inside combustible gas's of box concentration, and then has reduced the inside electric arc because of the switch closure produces of box and has leaded to the probability of detonation, has improved explosion-proof distribution box's factor of safety.
The utility model discloses further set up to: the gas storage tank is characterized in that an installation lattice is arranged at the bottom of the tank body, a gas storage bottle is installed in the installation lattice, flame-retardant gas is stored in the gas storage bottle, a flame-retardant pipeline is connected to the gas storage bottle, the flame-retardant pipeline is communicated with the interior of the tank body, an electromagnetic valve is arranged on the flame-retardant pipeline, and the electromagnetic valve is connected to the control device.
Through adopting above-mentioned technical scheme, the fire-retardant gas of storage in the gas bomb that sets up in the installation check can play fire-retardant effect, and controlling means sends a signal for the solenoid valve when the flammable gas concentration is higher than the default, and the solenoid valve is opened for inside fire-retardant gas of gas bomb inside can follow inside fire-retardant pipeline conveying feed box, thereby has played fire-retardant effect, has further reduced the inside electric arc that produces because of the switch closure of box and has leaded to the probability of deflagration, has improved the factor of safety of explosion-proof distribution box.
The utility model discloses further set up to: the gas cylinder comprises a gas cylinder body, and is characterized in that a switch valve is arranged at the mouth of the gas cylinder body, an air pressure detection device is arranged on one side, close to an electromagnetic valve, of the switch valve of the gas cylinder body, the air pressure detection device is connected to a control device, and the control device is connected with an alarm device.
By adopting the technical scheme, the air pressure detection device is convenient to detect the air pressure in the air storage bottle, so that the residual air quantity in the air storage bottle can be judged; when the air pressure is lower than the preset value, the control device sends a signal to the alarm device to control the alarm device to alarm, and an operator is reminded of replacing the gas storage cylinder in time.
The utility model discloses further set up to: the mounting grid is internally provided with a supporting semi-ring for supporting the gas storage bottle, and the top of the supporting semi-ring is provided with a clamping reed for clamping the gas storage bottle.
Through adopting above-mentioned technical scheme, support the semi-ring and can support the gas bomb, and the setting of joint reed is convenient for carry out the joint to the gas bomb, because the joint reed atress is easy to be deformed to can carry out the joint to the gas bomb when needs are fixed with the gas bomb, and deformation when the gas bomb need be changed takes out the gas bomb and changes, the gas bomb of being convenient for is fixed and changes.
The utility model discloses further set up to: the clamping reed is provided with an arc-shaped binding surface which is attached to the gas storage bottle.
Through adopting above-mentioned technical scheme, the setting of arc binding face is convenient for the joint reed to laminate with the gas bomb better mutually to be convenient for more fixed to the gas bomb.
The utility model discloses further set up to: and an anti-slip rubber layer is arranged on the arc-shaped binding surface.
Through adopting above-mentioned technical scheme, the non-slip rubber layer is made by rubber, and its coefficient of friction is great, therefore the non-slip rubber layer has increased the friction with the gas bomb laminating department, further fixes the gas bomb between support semi-ring and joint reed.
The utility model discloses further set up to: the top of the box body is provided with an air pressure balancing hole communicated with the inside of the box body.
Through adopting above-mentioned technical scheme, the setting in atmospheric pressure balance hole is convenient for balance the atmospheric pressure of box inside to be convenient for combustible gas and spill over from atmospheric pressure balance hole when scavenging pump constantly inputs clean air.
The utility model discloses further set up to: and a smoke check valve is arranged in the air pressure balance hole.
Through adopting above-mentioned technical scheme, the setting of flue gas check valve is convenient for seal the atmospheric pressure balancing hole to make atmospheric pressure balancing hole one-way switch on, thereby it gets into inside the box to have reduced combustible gas from atmospheric pressure balancing hole.
To sum up, the beneficial effects of the utility model are that:
1. the concentration detection device, the control device, the air inlet pipe, the gas storage cylinder, the flame-retardant pipeline and the electromagnetic valve are matched, so that the combustible gas is conveniently replaced out of the box body when the concentration of the combustible gas exceeds a threshold value, the probability of deflagration caused by electric sparks in the box body is reduced, and the safety coefficient of the explosion-proof distribution box is greatly improved;
2. the technology that the installation grids, the support semi-rings, the clamping spring pieces, the arc-shaped binding surfaces and the anti-slip rubber layers are matched is adopted, so that the effect of conveniently and quickly fixing the gas storage bottle and conveniently and quickly replacing the gas storage bottle in the later period is achieved;
3. the technology that the air pressure balance hole is matched with the flue gas check valve is adopted, so that the effect that the combustible gas is discharged from the air pressure balance hole and cannot enter the box body along the air pressure balance hole is achieved.
Drawings
FIG. 1 is a schematic diagram of an explosion-proof distribution box with an improved safety factor in the embodiment;
fig. 2 is a schematic diagram for showing a structure at a mounting grid in the embodiment.
In the figure: 1. a box body; 11. an air pressure balancing hole; 12. a flue gas check valve; 13. installing grids; 131. a protective door; 2. a concentration detection device; 21. a control device; 211. a scavenging pump; 2111. an air inlet pipe; 212. an electromagnetic valve; 213. an air pressure detecting device; 214. an alarm device; 3. a gas cylinder; 31. a support half ring; 32. clamping the reed; 321. an arc-shaped binding surface; 3211. an anti-slip rubber layer; 33. a flame retardant pipe; 34. and (4) switching on and off the valve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example (b):
the utility model provides an improve factor of safety's explosion-proof block terminal, refers to figure 1, and it includes box 1, and box 1 top is seted up one with the inside communicating atmospheric pressure balancing hole 11 of box 1, atmospheric pressure balancing hole 11 is round through-hole. The gas check valve 12 is adhered to the gas check valve 12 through the sealing glue in the gas pressure balance hole 11, and the gas check valve 12 is a one-way valve, so that the air inside the box body 1 can be discharged out of the box body 1, and the air outside the box body 1 is blocked by the gas check valve 12 and cannot enter the box body 1 from the gas pressure balance hole 11.
Referring to fig. 1, a concentration detection device 2 for detecting the concentration of a combustible gas is installed in a housing 1 by bolts, and the concentration detection device 2 is an infrared combustible gas detector. The concentration detection device 2 is electrically connected with a control device 21 through an RS485 bus, and the control device 21 is an STM32 type single chip microcomputer. The control device 21 is electrically connected with a scavenging pump 211, the scavenging pump 211 is a direct current air pump and is controlled by the control device 21, and the control device 21 and the scavenging pump 211 are both arranged on the bottom wall in the box body 1. The scavenging pump 211 is connected with an air inlet pipe 2111, the air inlet pipe 2111 is arranged at an outdoor air cleaning place, and when the concentration of combustible gas in the box body 1 exceeds a threshold value and does not reach a burning point, the control device 21 controls the scavenging pump 211 to extract air from the air cleaning place to scavenge air in the box body 1.
Referring to fig. 1 and 2, the bottom of the box body 1 is provided with a mounting grid 13, and the side wall of the top of the mounting grid 13 is rotatably connected with a protective door 131 through a hinge. Install gas bomb 3 in the installation check 13, installation check 13 internal weld has the support semi-ring 31 that is used for supporting gas bomb 3, and the radian of supporting semi-ring 31 is the same with gas bomb 3's radian. The top of the support semi-ring 31 is fixedly welded with a clamping reed 32 for clamping the gas storage bottle 3, and the clamping reed 32 is a metal sheet and is easy to deform under stress; the joint reed 32 integrated into one piece has the arc binding surface 321 inconsistent with gas bomb 3, and arc binding surface 321 can laminate with gas bomb 3 mutually, and it has non-slip rubber layer 3211 to bond on the arc binding surface 321, and non-slip rubber layer 3211 laminates with 3 outside walls of gas bomb mutually, because the joint reed 32 takes place deformation easily, so can be with 3 joints of gas bomb in supporting semi-ring 31 to fix gas bomb 3.
Referring to fig. 2, a flame retardant gas, which may be nitrogen, carbon dioxide, or the like, is stored in the gas cylinder 3, and in this embodiment, liquid nitrogen is preferred. Be connected with fire-retardant pipeline 33 on the gas bomb 3, fire-retardant pipeline 33 communicates inside box 1 to release the inside liquid nitrogen gas of gas bomb 3 inside to box 1 is inside, thereby further reduces the inside combustible gas's of box 1 concentration. The flame-retardant pipeline 33 is connected with the electromagnetic valve 212 in a threaded manner, the electromagnetic valve 212 is connected to the control device 21, and the control device 21 controls the electromagnetic valve 212 to be opened when the concentration of the combustible gas in the box body 1 exceeds a threshold value and does not reach a burning point, so that nitrogen can enter the box body 1 conveniently.
Referring to fig. 2, a switch valve 34 for controlling the opening and closing of the gas cylinder 3 is installed at the mouth of the gas cylinder 3, an air pressure detecting device 213 is installed at one side of the switch valve 34 close to the electromagnetic valve 212 of the gas cylinder 3, the air pressure detecting device 213 is a digital air pressure meter, the air pressure detecting device 213 is connected to the control device 21, and the air pressure detecting device 213 detects the air pressure inside the gas cylinder 3 to detect the residual air amount inside the gas cylinder 3; the control device 21 is connected with an alarm device 214, the alarm device 214 is a piezoelectric buzzer, and the alarm device 214 is installed on the bottom wall inside the box body 1.
The working principle is as follows:
after the explosion-proof distribution box is installed, the concentration detection device 2 detects the concentration of the flammable gas inside the box body 1 and transmits the parameter to the control device 21. When the concentration of the combustible gas in the tank 1 exceeds a threshold value, the controller 21 controls the scavenging pump 211 to be activated, and the scavenging pump 211 pumps clean air from outside into the tank 1 to replace the combustible gas in the tank 1 with the combustible gas in the tank 1.
At the same time, the control device 21 controls the electromagnetic valve 212 on the flame retardant pipeline 33 to open, and the liquid nitrogen in the gas storage cylinder 3 connected with the flame retardant pipeline 33 is released to enter the box body 1 from the flame retardant pipeline 33, because the nitrogen is lighter than air and can rise under the disturbance action of the scavenging pump 211 to replace the gas in the box body 1 out of the box body 1. As the air pressure inside the box body 1 is increased, the flue gas check valve 12 is conducted in a single direction, and the combustible gas can be discharged out of the box body 1. When the scavenging pump 211 and the electromagnetic valve 212 are closed, the flue gas check valve 12 is automatically closed after the air pressure in the box body 1 is balanced, and the combustible gas in the surrounding environment of the explosion-proof distribution box is reduced from entering the box body 1 from the air pressure balancing hole 11.
The air pressure detection device 213 on the flame-retardant pipeline 33 detects the air pressure inside the gas bomb 3 and transmits an air pressure signal to the control device 21, the control device 21 sends a signal to the alarm device 214 when the air pressure is lower than a preset value, and the alarm device 214 reminds an operator to replace the gas bomb 3 in time.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides an improve factor of safety's explosion-proof block terminal, includes box (1), its characterized in that: the device is characterized in that a concentration detection device (2) for detecting the concentration of the combustible gas is installed inside the box body (1), the concentration detection device (2) is electrically connected with a control device (21), the control device (21) is electrically connected with a scavenging pump (211), the scavenging pump (211) is connected with an air inlet pipe (2111), and the air inlet pipe (2111) is arranged at an outdoor air cleaning position.
2. The explosion-proof distribution box with the improved safety factor of claim 1, which is characterized in that: the gas storage tank is characterized in that an installation grid (13) is arranged at the bottom of the tank body (1), a gas storage bottle (3) is installed in the installation grid (13), flame-retardant gas is stored in the gas storage bottle (3), a flame-retardant pipeline (33) is connected to the gas storage bottle (3), the flame-retardant pipeline (33) is communicated with the interior of the tank body (1), an electromagnetic valve (212) is arranged on the flame-retardant pipeline (33), and the electromagnetic valve (212) is connected to the control device (21).
3. The explosion-proof distribution box with the improved safety factor of claim 2, characterized in that: the gas bomb is characterized in that a switch valve (34) is arranged at the mouth of the gas bomb (3), an air pressure detection device (213) is arranged on one side, close to the electromagnetic valve (212), of the switch valve (34) of the gas bomb (3), the air pressure detection device (213) is connected to the control device (21), and the control device (21) is connected with an alarm device (214).
4. The explosion-proof distribution box with the improved safety factor of claim 2, characterized in that: the gas storage bottle fixing device is characterized in that a supporting half ring (31) used for supporting a gas storage bottle (3) is arranged inside the mounting grid (13), and a clamping spring (32) used for clamping the gas storage bottle (3) is arranged at the top of the supporting half ring (31).
5. The explosion-proof distribution box with the improved safety factor of claim 4, wherein: the clamping reed (32) is provided with an arc-shaped binding surface (321) which is attached to the gas storage bottle (3).
6. The explosion-proof distribution box with the improved safety factor of claim 5, wherein: the arc-shaped binding surface (321) is provided with an anti-slip rubber layer (3211).
7. The explosion-proof distribution box with the improved safety factor of claim 1, which is characterized in that: the top of the box body (1) is provided with an air pressure balancing hole (11) communicated with the inside of the box body (1).
8. The explosion-proof distribution box with the improved safety factor of claim 7, wherein: and a flue gas check valve (12) is arranged in the air pressure balance hole (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020540497.7U CN211629651U (en) | 2020-04-13 | 2020-04-13 | Improve factor of safety's explosion-proof block terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020540497.7U CN211629651U (en) | 2020-04-13 | 2020-04-13 | Improve factor of safety's explosion-proof block terminal |
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| Publication Number | Publication Date |
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| CN211629651U true CN211629651U (en) | 2020-10-02 |
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| CN202020540497.7U Active CN211629651U (en) | 2020-04-13 | 2020-04-13 | Improve factor of safety's explosion-proof block terminal |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410769A (en) * | 2021-06-21 | 2021-09-17 | 陕西惠齐电力科技开发有限公司 | Intelligent ring main unit with explosion-proof function and use method thereof |
| CN114447836A (en) * | 2022-02-09 | 2022-05-06 | 嘉兴南湖学院 | Full-power medium-voltage converter with inertia protection function for wind power |
| CN114562801A (en) * | 2022-01-20 | 2022-05-31 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner indoor unit and program product |
-
2020
- 2020-04-13 CN CN202020540497.7U patent/CN211629651U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410769A (en) * | 2021-06-21 | 2021-09-17 | 陕西惠齐电力科技开发有限公司 | Intelligent ring main unit with explosion-proof function and use method thereof |
| CN114562801A (en) * | 2022-01-20 | 2022-05-31 | 青岛海尔空调器有限总公司 | Control method and control device for air conditioner indoor unit and program product |
| CN114447836A (en) * | 2022-02-09 | 2022-05-06 | 嘉兴南湖学院 | Full-power medium-voltage converter with inertia protection function for wind power |
| CN114447836B (en) * | 2022-02-09 | 2024-03-08 | 嘉兴南湖学院 | Full-power medium-voltage converter with inertia protection for wind power |
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