CN201757073U - Safe & intelligent type explosionproof air blower electric control box - Google Patents

Safe & intelligent type explosionproof air blower electric control box Download PDF

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Publication number
CN201757073U
CN201757073U CN2009200615602U CN200920061560U CN201757073U CN 201757073 U CN201757073 U CN 201757073U CN 2009200615602 U CN2009200615602 U CN 2009200615602U CN 200920061560 U CN200920061560 U CN 200920061560U CN 201757073 U CN201757073 U CN 201757073U
Authority
CN
China
Prior art keywords
button switch
contactor
push
air blower
safe
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 - Lifetime
Application number
CN2009200615602U
Other languages
Chinese (zh)
Inventor
周利新
蒋成龙
伍继军
李永昆
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
The boat in Guangzhou Wenchong Dock Company Limited
Original Assignee
GUANGZHOU ZHONGCHUAN YUANHANG DOCK CO Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by GUANGZHOU ZHONGCHUAN YUANHANG DOCK CO Ltd filed Critical GUANGZHOU ZHONGCHUAN YUANHANG DOCK CO Ltd
Priority to CN2009200615602U priority Critical patent/CN201757073U/en
Application granted granted Critical
Publication of CN201757073U publication Critical patent/CN201757073U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Abstract

The utility model relates to a safe & intelligent type explosionproof air blower electric control box including an air blower power supply control circuit and a box body, the air blower power supply control circuit consists of a leakage protector, an electronic protective relay, a contactor, a thermorelay, a first button switch, a second button switch and a green indicator lamp and a red indicator lamp; the air blower power supply control circuit is arranged in the box body. The safe & intelligent type explosionproof air blower electric control box is capable of monitoring whether the voltage and current of the air blower is normal, when the air blower is in an abnormal condition, the electric control box can automatically cut off the electric of the air blower to ensure the safe running of the air blower.

Description

Safe and intelligent type explosion-proof fan electric control box
Technical field
The utility model relates to a kind of electric control box, particularly a kind of safe and intelligent type explosion-proof fan electric control box.Whether its voltage, current anomaly that can monitor blower fan can cut off fan power automatically when abnormal conditions occurring, guarantee the running safety of blower fan.
Background technique
For many years, the powerful blower fan of a large amount of uses makes it become one of indispensable main production facility in the production in the inherent manufacturing operation of shipbuilding industry.Simultaneously, because powerful device is many on the boats and ships, electricity consumption situation complexity, current/voltage is often undesired, used producibility blower fan is often owing to reasons such as spread of voltage or phase shortage electric current are excessive, and the phenomenon that motor occurs burning, the production ventilation equipment that cause damage, work brings bigger influence to ordinary production, and then has increased the maintenance cost of equipment greatly.Therefore, it is excessive and the problem of the direct impact blower motor that causes has guaranteed to produce the Security that blower fan uses that shipbuilding industry be badly in need of to solve spread of voltage or phase shortage electric current, stopped to burn the phenomenon of motor.
Summary of the invention
For solving the problems of the technologies described above, mainly adopt technological means such as delayed releasing, overload protection, phase shortage outage, light induction design, to be implemented in the essential safety of accomplishing the intelligent protection installations and facilities in the complicated power utilization environment and safe in utilization.
The utility model provides a kind of safe and intelligent type explosion-proof fan electric control box; comprise casing and the fan power control circuit that is installed within the described casing, it is characterized in that: described fan power control circuit comprises: earth leakage protective device, electronic type protective relay, contactor, thermorelay, first push-button switch, second push-button switch and green indicating lamp, red led.
In the technique scheme, described fan power control circuit is connected respectively to the three-phase alternating-current supply of input the main contact of described electronic type protective relay and described contactor by described earth leakage protective device; Main contact by described contactor is connected to blower motor through described thermorelay; The Ta end of described electronic type protective relay is connected to the A phase power input of described electronic type protective relay; the Tc end of described electronic type protective relay described first push-button switch of connecting in proper order; described second push-button switch; the coil of described contactor; be connected to the B phase power input of described electronic type protective relay at last; described contactor often to open the auxiliary contact back of connecting with described green indicating lamp in parallel with described second push-button switch, the normally closed auxiliary contact of the described contactor coils from parallel connection of coils back and described second push-button switch and described contactor of connecting with described red led.
In the technique scheme, described first push-button switch is a normally closed interlock, is blower motor stop button switch; Described second push-button switch is a normally open contact, is blower motor starting button switch.
In the technique scheme, described casing is firm explosion-proof metal cabinet.
The utility model has been obtained following technique effect:
This blower fan electric control box easy to use, quick, reduced the device maintenance cost, the maintenance that alleviates production teams and groups is consuming time, reacts fine.
2. directly guarantee to produce the security and stability of blower fan, reduced the potential safety hazard of employee in construction, guaranteed the continuity of producing, directly reduced total cost of production, strengthened enterprise competitiveness simultaneously.
Description of drawings
Fig. 1 is the fan power control circuit figure of safe and intelligent type explosion-proof fan electric control box.
Mark among the figure: 1-earth leakage protective device; 2-electronic type protective relay; 3-first push-button switch; 4-second push-button switch; The 5-green indicating lamp; The 6-red led; The KM-contactor; The FR-thermorelay; The M-blower motor.
Embodiment
Understand and enforcement the utility model for the ease of those of ordinary skills, the utility model is described in further detail below in conjunction with the drawings and the specific embodiments.
As shown in fig. 1; safe and intelligent type explosion-proof fan electric control box mainly comprises fan power control circuit and casing, and this control circuit mainly comprises: earth leakage protective device 1, electronic type protective relay 2, contactor KM, thermorelay FR, first push-button switch 3, second push-button switch 4 and parts such as green indicating lamp 5, red led 6.
Three-phase alternating-current supply is connected respectively to the main contact of electronic type protective relay 2 and contactor KM by earth leakage protective device 1; Main contact by contactor KM is connected to blower motor through overtemperature relay FR; The Ta end of electronic type protective relay 2 is connected to the A phase power input of electronic type protective relay 2; connect the in proper order coil of first push-button switch 3, second push-button switch 4, contactor KM of the Tc end of electronic type protective relay 2; be connected to the B phase power input of electronic type protective relay 2 at last; contactor KM often to open the auxiliary contact back of connecting with green indicating lamp 5 in parallel with second push-button switch 4, the normally closed auxiliary contact of the contactor KM coils from parallel connection of coils back and second push-button switch 4 and contactor KM of connecting with red led 6.
Earth leakage protective device 1, when circuit or blower motor is short-circuited or during leak current fault, the hydraulic type electrical apparatus release in the earth leakage protective device 1 is finished the action of threading off of time-delay or moment, plays the earth leakage protective effect thereby cut off the electricity supply, thereby avoids the person to get an electric shock.The earth leakage protective device 1 preferred DZ series leakage breaker that adopts positive safe company.
Electronic type protective relay 2 in time detects faults such as voltage overload, undertension, phase shortage, misphase by means of advanced person's electronic circuit, and motor, circuit are carried out reliable protection.Electronic type protective relay 2 preferred XJ II series or the XJ3-D series phase failure and the phase sequence relays that adopt positive safe company.It is implemented in does in the three phase alternating current motor to make phase sequence in overvoltage/undervoltage, open-phase protection and the irreversible transmission device; when there are the phase failure in any one-phase open circuit or power supply line in the three-phase circuit; this protective relay can move immediately; the control contact cuts off main circuit ac contactor coil power supply; thereby reach the action of A.C. contactor main contact, motor is carried out open-phase protection.After the irreversible equipment of three-phase (as blower fan, water pump, air compressor, elevator, motor etc.) is being assert phase sequence; during because of maintenance or change power supply line and former identification phase sequence misconnection; this protective relay can be differentiated the phase sequence reliably working equally; stop the current supply circuit power supply is reached the purpose of protection equipment.
Thermorelay FR utilizes the thermal effect of electric current that motor and control circuit are carried out overload protection.
Contactor KM is the control unit that utilizes electromagnetic force spring reaction power interoperation, plays effects such as connecting power supply and disconnection self-locking.
First push-button switch 3 is a normally closed interlock, is blower motor stop button switch; Second push-button switch 4 is a normally open contact, is blower motor starting button switch.Green indicating lamp 5 is the blower motor run indicator, and red led 6 is the blower motor power supply indicator.5 bright when green indicating lamp, the indication blower motor was in normal operating condition when red led 6 went out; When green indicating lamp 5 goes out, indication blower motor input power supply effectively when red led 6 was bright, blower motor is in halted state; When green indicating lamp 5 goes out, indication blower motor input power supply was invalid when red led 6 went out.Green indicating lamp 5 and the red led 6 preferential ND1-25 series of signals lamps of selecting to adopt positive safe company.
When the switch of the earth leakage protective device 1 that closes; the normally opened contact closure of electronic type protective relay 2; electric current is lighted red led 6 by normally closed auxiliary contact and the red led 6 of first push-button switch 3 (normally closed interlock, blower motor stop button switch), contactor KM.
After pressing second push-button switch 4 (normally open contact, blower motor starting button switch), electric current flows through the coil of contactor KM, and what make contactor KM often opens the auxiliary contact closure, lights green indicating lamp 5, makes contactor KM self-locking simultaneously; Make the normally closed auxiliary contact of contactor KM open, extinguish red led 6; The main contact closure of contactor KM, fan motor M powers, blower motor M entry into service.Because contactor KM self-locking, after second push-button switch 4 is released, still can keep blower motor M is powered.
When blower motor M runs well, if when voltage overload, phase shortage, the normally opened contact of electronic type protective relay 2 disconnects, the coil of contactor KM is disconnected power supply, the main contact of contactor KM disconnects, and fan motor M stops power supply, and blower motor M shuts down; The self-locking of contactor KM is disconnected, and green indicating lamp 5, red led 6 all are de-energized simultaneously, extinguish simultaneously.
When blower motor M runs well, after pressing first push-button switch 3 (normally closed interlock, blower motor stop button switch), the coil of contactor KM is disconnected power supply, the main contact of contactor KM disconnects, and fan motor M stops power supply, and blower motor M shuts down; The self-locking of contactor KM is disconnected, and green indicating lamp 5, red led 6 all are de-energized simultaneously, extinguish simultaneously.After first push-button switch 3 was released, electric current was lighted red led 6 by normally closed auxiliary contact and the red led 6 of first push-button switch 3, contactor KM.Because contactor KM self-locking is disconnected, after first push-button switch 3 is released, blower motor M is still disconnected power supply.
In order to improve the Security of fan power control circuit, realize explosion prevention function, the dynamo-electric source control circuit of whole wind is installed in the firm explosion-proof metal box, preferably adopts the cast iron case.

Claims (3)

1. safe and intelligent type explosion-proof fan electric control box, comprise casing and the fan power control circuit that is installed within the described casing, it is characterized in that: described fan power control circuit comprises: earth leakage protective device (1), electronic type protective relay (2), contactor (KM), thermorelay (FR), first push-button switch (3), second push-button switch (4) and green indicating lamp (5), red led (6);
Described fan power control circuit is connected respectively to the three-phase alternating-current supply of input the main contact of described electronic type protective relay (2) and described contactor (KM) by described earth leakage protective device (1); Main contact by described contactor (KM) is connected to blower motor (M) through described thermorelay (FR); The Ta end of described electronic type protective relay (2) is connected to the A phase power input of described electronic type protective relay (2); the Tc end of described electronic type protective relay (2) described first push-button switch (3) of connecting in proper order; described second push-button switch (4); the coil of described contactor (KM); be connected to the B phase power input of described electronic type protective relay (2) at last; described contactor (KM) often to open the auxiliary contact back of connecting with described green indicating lamp (5) in parallel with described second push-button switch (4), the normally closed auxiliary contact of described contactor (KM) coils from parallel connection of coils back and described second push-button switch (4) and described contactor (KM) of connecting with described red led (6).
2. safe and intelligent type explosion-proof fan electric control box according to claim 1, it is characterized in that: described first push-button switch (3) is a normally closed interlock, is blower motor stop button switch; Described second push-button switch (4) is a normally open contact, is blower motor starting button switch.
3. safe and intelligent type explosion-proof fan electric control box according to claim 1 is characterized in that: described casing is firm explosion-proof metal cabinet.
CN2009200615602U 2009-07-31 2009-07-31 Safe & intelligent type explosionproof air blower electric control box Expired - Lifetime CN201757073U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009200615602U CN201757073U (en) 2009-07-31 2009-07-31 Safe & intelligent type explosionproof air blower electric control box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2009200615602U CN201757073U (en) 2009-07-31 2009-07-31 Safe & intelligent type explosionproof air blower electric control box

Publications (1)

Publication Number Publication Date
CN201757073U true CN201757073U (en) 2011-03-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN2009200615602U Expired - Lifetime CN201757073U (en) 2009-07-31 2009-07-31 Safe & intelligent type explosionproof air blower electric control box

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102299505A (en) * 2011-09-05 2011-12-28 深圳市大族激光科技股份有限公司 Automatic power-off protection method and mechanism for out-of-control motor
CN111384711A (en) * 2018-12-28 2020-07-07 江苏万帮德和新能源科技股份有限公司 Phase-dislocation protection device based on charging pile system and use method thereof

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102299505A (en) * 2011-09-05 2011-12-28 深圳市大族激光科技股份有限公司 Automatic power-off protection method and mechanism for out-of-control motor
CN111384711A (en) * 2018-12-28 2020-07-07 江苏万帮德和新能源科技股份有限公司 Phase-dislocation protection device based on charging pile system and use method thereof

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
C56 Change in the name or address of the patentee

Owner name: CSSC CHENGXI SHIPYARD (GUANGZHOU) CO., LTD.

Free format text: FORMER NAME: GUANGZHOU CSSC SHIPYARD CO., LTD.

CP03 Change of name, title or address

Address after: No. 68, West Zhujiang Road, Pearl River management area, Guangzhou, Nansha District

Patentee after: The ship sailing ship in Chengxi (Guangzhou) Co. Ltd.

Address before: 510727 No. 3 Wen Wen Road, Whampoa District, Guangdong, Guangzhou

Patentee before: Guangzhou Zhongchuan Yuanhang Dock Co., Ltd.

CP03 Change of name, title or address

Address after: 511462 Nansha District, Guangzhou, No. sailing Road, No. 10, self made by the author of the 4 (office building), No. 1

Patentee after: The ship dengxi shipyard (Guangzhou) Co. Ltd.

Address before: 510000, No. 68, West Zhujiang Road, Nansha District Pearl River management area, Guangzhou, Guangdong, China

Patentee before: The ship sailing ship in Chengxi (Guangzhou) Co. Ltd.

CP01 Change in the name or title of a patent holder
CP01 Change in the name or title of a patent holder

Address after: 511462 Nansha District, Guangzhou, No. sailing Road, No. 10, self made by the author of the 4 (office building), No. 1

Patentee after: The boat in Guangzhou Wenchong Dock Company Limited

Address before: 511462 Nansha District, Guangzhou, No. sailing Road, No. 10, self made by the author of the 4 (office building), No. 1

Patentee before: The ship dengxi shipyard (Guangzhou) Co. Ltd.

CX01 Expiry of patent term
CX01 Expiry of patent term

Granted publication date: 20110309