CN202086997U - Matcher for automatic monitoring device of fire water supply - Google Patents
Matcher for automatic monitoring device of fire water supply Download PDFInfo
- Publication number
- CN202086997U CN202086997U CN201120167599XU CN201120167599U CN202086997U CN 202086997 U CN202086997 U CN 202086997U CN 201120167599X U CN201120167599X U CN 201120167599XU CN 201120167599 U CN201120167599 U CN 201120167599U CN 202086997 U CN202086997 U CN 202086997U
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- adaptation
- fire water
- inner core
- fire
- water supply
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Abstract
The utility model discloses a matcher for an automatic monitoring device of fire water supply, which comprises an outer shell and an inner core and is characterized in that the inner core of the matcher is a three-phase inductance coil, three terminals at one end are in serial connection with three output ends of a frequency conversion speed regulator in the automatic monitoring device, and three terminals at the other end are connected to motors of fire protection pumps through a group of contactors. The three-phase inductance coil comprises an insulated tube, wires are wound on the insulated tube, and selenium-steel sheet iron cores are installed in the insulated tube. The selenium-steel sheet iron cores are replaced by low frequency magnetic cores. The inner core of the matcher is provided with a metal shell which is insulated with the inner core electrically and beneficial for radiating. The metal shell is provided with a grounding point. The matcher for the automatic monitoring device of fire water supply effectively improves the automatic monitoring technology of fire water supply, perfects control technology of fire water supply, and improves safety and reliability of devices and fire water supply systems.
Description
Technical field
The utility model relates to fire-fighting equipment control technology field, relates in particular to a kind of adaptation that is applied to the automatic inspection device of fire water-supply.
Background technology
The automatic inspection device of fire water-supply has been released for many years, because this installs good performance and is the effect that improves the fire supply system reliability, accepted extensively by market, also more because the enforcement of national relevant specification, and the equipment that makes this device become must to have in the present fire supply system.But, thereby may cause the problem of device security and fire supply system safety when releasing owing to this technology is left in the basket with regard to the problem that its inadequate natural endowment is arranged.
The utility model content
The utility model provides a kind of adaptation that is applied to the automatic inspection device of fire water-supply, patrols and examines technology automatically to improve fire water-supply, improves the control technology of fire water-supply, the security reliability of raising equipment and fire supply system.
Technical problem to be solved in the utility model is achieved through the following technical solutions:
A kind of adaptation that is applied to the automatic inspection device of fire water-supply, comprise shell and inner core, it is characterized in that: the inner core of described adaptation is the three pole reactor coil, three terminals of one end are connected in three outputs of the variable-frequency governor in the automatic inspection device, and three terminals of the other end are connected to each fire pump motor by a winding tentaculum.
Described three pole reactor coil comprises insulation tube, and coiling lead on the insulation tube is equipped with the selenium steel plate iron core in the insulation tube.
Described selenium steel plate iron core is substituted by low frequency core.
The parameter of described adaptation is determined by following formula:
XX
Difference=XX
1-XX
2
R
Difference=R
1-R
2
Wherein, according to the No Load Start operation equivalent circuit diagram of AC three-phase asynchronous motor, obtain and patrol and examine with the total impedance XX in the identical motor equivalent circuit of the power of frequency converter
1And R
1, the total impedance XX in the actual motor equivalent circuit of being patrolled and examined
2And R
2
The inner core of described adaptation is provided with outward and the insulation and be beneficial to the metal shell of heat radiation on electric of the inner core of adaptation.
Described metal shell is provided with earth point.
Adaptation is installed in the switch board of fire pump.
This adaptation has following advantage:
(1) solves the matching problem of frequency converter and fire pump motor, perfect patrolled and examined technology automatically, improved the reliability of fire supply system;
(2) though increased this adaptation, not only do not increase the cost of manufacture of equipment, but also reduced cost.This be because, after having used this adaptation, can reduce the capacity of frequency converter significantly.Such as: drag the 75KW pump motor in the past when patrolling and examining automatically, often will use the frequency converter of 37KW capacity.But, can use the 15KW capacity now.The frequency converter of a 15KW adds an adaptation, and its cost be the more important thing is less than a 37KW frequency converter: the adding of adaptation makes equipment reasonable on physical theory;
(3) adaptation suppresses the effect of radio higher hamonic wave in addition;
(4) because this adaptation is a passive device, and technology is simple, and rational in infrastructure, therefore, the reliability of itself is very high.
Description of drawings
Fig. 1 the utility model structure chart
The equivalent circuit diagram of Fig. 2 AC three-phase asynchronous motor
Fig. 3 patrols and examines when taking place automatically, the simplified electrical circuit diagram of Fig. 2
As shown in the figure, the automatic inspection device of 1-, 2-variable-frequency governor, 3-adaptation, 4-contactor, 5-fire pump motor, 6-controller
The specific embodiment
The utility model is described in further detail below in conjunction with Figure of description.
As shown in fig. 1, a kind of adaptation 3 that is applied to the automatic inspection device 1 of fire water-supply, comprise shell and inner core, it is characterized in that: the inner core of described adaptation 3 is the three pole reactor coil, three terminals of one end are connected in three outputs of the variable-frequency governor 2 in the automatic inspection device 1, and three terminals of the other end are connected to each fire pump motor 5 by a winding tentaculum 4.
Described three pole reactor coil comprises insulation tube, and coiling lead on the insulation tube is equipped with the selenium steel plate iron core in the insulation tube.
Described selenium steel plate iron core is substituted by low frequency core.
The parameter of described adaptation 3 is determined by following formula:
XX
Difference=XX
1-XX
2
R
Difference=R
1-R
2
Wherein, according to the No Load Start operation equivalent circuit diagram of AC three-phase asynchronous motor, obtain and patrol and examine with the total impedance XX in the identical motor equivalent circuit of the power of frequency converter
1And R
1, the total impedance XX in the actual motor equivalent circuit of being patrolled and examined
2And R
2
The inner core of described adaptation is provided with outward and the insulation and be beneficial to the metal shell of heat radiation on electric of the inner core of adaptation.
Described metal shell is provided with earth point.
Adaptation 3 is installed in the switch board of fire pump.
The automatic inspection device 1 of present fire water-supply mainly is made up of variable-frequency governor 2, controller and contactor group 4 usually.The running of this device is: controller makes lower frequency of variable-frequency governor output, for example: 10HZ, drive the fire pump motor, make each fire pump periodically (being not more than 7d usually), rotation 5-10 minute of low speed (approximately 300T/min).Because water pump is low-speed running, do not form vacuum in the pump housing, thus can water outlet, can be to the supercharging of fire fighting supply main pipe.Simultaneously, when this operating mode, power consumption is very low, is not more than about 2 percent of pump motor rated power usually.This excellent function has solved the corrosion and the dead problem of rust of fire pump really well.
In above-mentioned action, the frequency inverter capacity in the inspection device and the power mode of not matching of fire pump motor design automatically.This be because:
P＝Q*H*g*ρ/1000*η
In the formula: P: pump shaft power (KW), Q: flow (m
3/ h), H: lift (m), g: acceleration of gravity, ρ: fluid density, η: transmission efficiency
Because in above-mentioned process of patrolling and examining automatically, water pump is a low-speed running, not water outlet is so have: Q=0; H=0.Like this must: P=0.When patrolling and examining automatically, pump motor does not do work in other words.
In fact, about 2 percent power consumption of the above-mentioned motor rated power of speaking of that is consumed is, because pump motor is when slowly running, in order to overcome the frictional resistance of pump shaft, when needing to produce corresponding torque, be that variable-frequency governor drives pump motor institute work.
Very little just because of power consumption, so just adopted low power variable-frequency governor.So also reduced cost.
People can find, although actual power loss is very little,, be that the variable-frequency governor of 2 percent capacity goes to drag it if really use pump motor rated power, frequency converter immediately can overload protection and shut down.
Method by experiment it is believed that: the capacity of frequency converter be selected in the fire pump motor rated power about 1/2nd for well.
However, also do not solve all problems, in actual applications, the situation of frequency converter overload protection happens occasionally.In case this situation takes place, the manager often adopts the mode that resets to frequency converter to solve after checking side by side the reason except each side.Owing to mostly be unattended situation, if do not go artificially to reset to frequency converter, inspection device is can not automatically reset automatically, also just equals to have deleted automatic inspection function, thereby the reliability of water work just can not get guaranteeing.
Why does frequency converter have aforesaid overload phenomenon?
Its problem is exactly that frequency converter and fire pump power of motor do not match and cause!
The adaptation of our design will make it form coupling exactly.
Design process is as follows: please see the equivalent circuit diagram of AC three-phase asynchronous motor, as shown in Figure 2; Owing to when patrolling and examining generation automatically, can regard the No Load Start operation as, so can make Fig. 2 be reduced to circuit diagram shown in Fig. 3 again.
Now illustrate the design of adaptation:
The pump motor that now uses the 15KW frequency converter to drag 75KW is patrolled and examined automatically, obtains earlier:
Total impedance in the 15KW motor equivalent circuit
XX
15＝X
1+X
2
R
15＝r
1+r
2
Obtain the total impedance in the 75KW motor equivalent circuit again
XX
75＝X
1+X
2
R
75＝r
1+r
2
Obtain both impedance difference: XX
Difference=XX
15-XX
75
R
Difference=R
15-R
75
Make the resistance value of adaptation equal XX
DifferenceAnd R
DifferenceJust the parameter of adaptation can have been drawn.
In the actual design of adaptation, also to consider to make the size of this adaptation wire diameter in conjunction with the power of motor.In the actual design of adaptation, adopt selenium steel plate iron core or low frequency core to reduce the volume of adaptation.Lead is wound on this magnetic core, and handles with the equal good insulation of interlayer between line.The shell of adaptation is manufactured by metal material, and the selection of this metal material should be avoided producing eddy current at itself, and can good heat radiating and good earth.Adaptation is installed in the Firefighting Pump Control cabinet as the part of inspection device.
Claims (6)
1. adaptation that is applied to the automatic inspection device of fire water-supply, comprise shell and inner core, it is characterized in that: the inner core of described adaptation is the three pole reactor coil, three terminals of one end are connected in three outputs of the variable-frequency governor in the automatic inspection device, and three terminals of the other end are connected to each fire pump motor by a winding tentaculum.
2. the adaptation that is applied to the automatic inspection device of fire water-supply according to claim 1 is characterized in that: described three pole reactor coil comprises insulation tube, and coiling lead on the insulation tube is equipped with the selenium steel plate iron core in the insulation tube.
3. the adaptation that is applied to the automatic inspection device of fire water-supply according to claim 2 is characterized in that: described selenium steel plate iron core is substituted by low frequency core.
4. the adaptation that is applied to the automatic inspection device of fire water-supply according to claim 1 is characterized in that: the inner core of described adaptation is provided with outward and the insulation and be beneficial to the metal shell of heat radiation on electric of the inner core of adaptation.
5. the adaptation that is applied to the automatic inspection device of fire water-supply according to claim 4 is characterized in that: described metal shell is provided with earth point.
6. the adaptation that is applied to the automatic inspection device of fire water-supply according to claim 1 is characterized in that: adaptation is installed in the switch board of fire pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120167599XU CN202086997U (en) | 2011-05-24 | 2011-05-24 | Matcher for automatic monitoring device of fire water supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120167599XU CN202086997U (en) | 2011-05-24 | 2011-05-24 | Matcher for automatic monitoring device of fire water supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202086997U true CN202086997U (en) | 2011-12-28 |
Family
ID=45362096
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120167599XU Expired - Fee Related CN202086997U (en) | 2011-05-24 | 2011-05-24 | Matcher for automatic monitoring device of fire water supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202086997U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108629112A (en) * | 2018-05-02 | 2018-10-09 | 苏州爱博斯蒂低碳能源技术有限公司 | A method of pump head is obtained by valve state |
| RU218498U1 (en) * | 2023-03-30 | 2023-05-29 | Алексей Николаевич Паньков | FIRE PROTECTION DEVICE |
-
2011
- 2011-05-24 CN CN201120167599XU patent/CN202086997U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108629112A (en) * | 2018-05-02 | 2018-10-09 | 苏州爱博斯蒂低碳能源技术有限公司 | A method of pump head is obtained by valve state |
| CN108629112B (en) * | 2018-05-02 | 2021-12-24 | 苏州爱博斯蒂低碳能源技术有限公司 | Method for acquiring water pump lift through valve state |
| RU218498U1 (en) * | 2023-03-30 | 2023-05-29 | Алексей Николаевич Паньков | FIRE PROTECTION DEVICE |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20111228 Termination date: 20180524 |