CN203233163U - Equipment cabinet air conditioner with power supply lightning protection function - Google Patents
Equipment cabinet air conditioner with power supply lightning protection function Download PDFInfo
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- CN203233163U CN203233163U CN 201320244214 CN201320244214U CN203233163U CN 203233163 U CN203233163 U CN 203233163U CN 201320244214 CN201320244214 CN 201320244214 CN 201320244214 U CN201320244214 U CN 201320244214U CN 203233163 U CN203233163 U CN 203233163U
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- lightning protection
- circuit
- cabinet air
- power
- conditioner
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Abstract
The utility model provides an equipment cabinet air conditioner with a power supply lightning protection function. The equipment cabinet air conditioner comprises a main body and a rear panel arranged on the back part of the main body. The rear panel is provided with a communication interface and power supply interfaces, a lightning protection plate is arranged behind the communication interface, and the lightning protection plate is provided with lightning protection circuits for the power supply. Through the equipment cabinet air conditioner with the power supply lightning protection function, damage to a power supply is prevented during a thunderstorm.
Description
Technical field
The utility model relates to a kind of machine cabinet air-conditioner, relates in particular to a kind of machine cabinet air-conditioner with lightning protection function.
Background technology
In recent years, growth along with mobile communication subscriber quantity, mobile communication rack based on requirement for signal coverage constantly increases, town and country, communication outdoor cabinet construction outside of the city get more and more, and because remote, most outdoor cabinets are in the unattended operation state, safety and the integrity problem of the corollary equipment of communication outdoor cabinet can't ensure, such as when the supporting machine cabinet air-conditioner of outdoor cabinet is delayed the machine fault, being difficult for being found, thereby cause outdoor cabinet internal heat generation element to have serious potential safety hazard.
Simultaneously; because most communication outdoor cabinets are positioned at outside of the city or the mountain top; whenever thunderstorm weather; the surge that thunder and lightning causes causes the damage of power supply, governor circuit etc. easily; mostly existing leakage circuit of air conditioner preventing from lightning stroke and surge is at alternating current, still can not protect it to avoid thunderbolt for the DC circuit element.
Simultaneously, in view of outdoor cabinet and the corollary equipment requirement to reliability of communicating by letter, the power supply that often is equipped with is alternating current-direct current hybrid power supply, be that the cabinet air conditioner power supply port is divided into two kinds of AC and DCs, when AC interruptions or brownout, can carry out direct current supply by the back-up sources such as storage battery at scene, therefore, it is particularly necessary that the lightning protection of power supply power supply port also seems.
The utility model content
The purpose of this utility model is to provide a kind of machine cabinet air-conditioner with power lightning protection function.
Correspondingly, a kind of machine cabinet air-conditioner with power lightning protection function of the present utility model comprises main body and is installed in the rear board of back body that described rear board is provided with communication interface and power interface, the communication interface rear is equipped with the lightning protection plate, and the lightning protection plate is provided with the power lightning protection circuit.
As further improvement of the utility model, described power lightning protection circuit comprises interchange lightning protection circuit and DC lightning prevention circuit,
Described interchange lightning protection circuit is the two-stage lightning protection, and each grade formed by the piezo-resistance of three parallel connections with the discharge tube that described three piezo-resistances are arranged in parallel, and is provided with decoupling component between the two-stage lightning protection;
Described DC lightning prevention circuit is three grades of lightning protection, the one-level lightning protection is made up of three piezo-resistances parallel with one another, the secondary lightning protection also is made up of three piezo-resistances parallel with one another, three grades of lightning protection are made up of three Transient Suppression Diodes parallel with one another, are equipped with decoupling component between one-level lightning protection and secondary lightning protection, secondary lightning protection and three grades of lightning protection.
As further improvement of the utility model, described decoupling component is air core inductor.
As further improvement of the utility model, exchange in the lightning protection circuit, described air core inductor is connected between one-level lightning protection and the secondary lightning protection.
As further improvement of the utility model, in the DC lightning prevention circuit, described air core inductor is connected between the adjacent two-stage lightning protection.
The beneficial effects of the utility model are: the utility model arranges lightning protection circuit at power interface, when having avoided thunderstorm weather to the destruction of power supply.
Description of drawings
Figure 1 shows that the stereogram of the utility model machine cabinet air-conditioner rear board open mode.
Fig. 2 is the enlarged drawing of Fig. 1 encircled.
Fig. 3 is the stereogram of Fig. 1 other direction.
Figure 4 shows that the lightning protection circuit schematic diagram of the utility model machine cabinet air-conditioner communication interface.
Figure 5 shows that the utility model machine cabinet air-conditioner power supply exchanges lightning protection circuit figure.
Figure 6 shows that the utility model machine cabinet air-conditioner power supply DC lightning prevention circuit diagram.
Figure 7 shows that the utility model machine cabinet air-conditioner reverse-connection preventing circuit figure.
Figure 8 shows that the Acquisition Circuit figure of the alternating voltage skew of the utility model machine cabinet air-conditioner.
Embodiment
Below with reference to embodiment shown in the drawings the utility model is described in detail.But these execution modes do not limit the utility model, and the conversion on the structure that those of ordinary skill in the art makes according to these execution modes, method or the function all is included in the protection range of the present utility model.
As shown in Figures 1 to 3, the utility model one execution mode machine cabinet air-conditioner comprises main body 1 and is installed in the rear board 2 at main body 1 rear portion.Described rear board 2 is provided with communication interface 21, power interface 22 and debugging interface 23.Particularly, communication interface 21 adopts two RJ45 interfaces, and this hardware is followed the RS485 standard, and its software protocol is followed international stipulations MODBUS-RTU agreement.It adopts the purpose of two RJ45 to be to make things convenient for the machine cabinet air-conditioner group-net communication.Communication protocol adopts the mode of increasing income, and really makes things convenient for users to realize system-level application.Communication interface 21 rears are equipped with lightning protection plate 24 and are provided with the direct current reverse-connection preventing circuit and the circuit board 25 of alternating voltage offset detection circuit.Described debugging interface 23 can show the machine cabinet air-conditioner operating state in real time, if take place unusually then timely display alarm information.
As shown in Figure 4, lightning protection plate 24 is provided with the communication interface lightning protection circuit, degree of protection differential mode 3KA, common mode 5KA, the whole protection circuit adopts the two-stage protection, and the first order is the discharge tube charge discharging resisting, and the second level is TVS (Transient Suppression Diode) charge discharging resisting, the front and back level realizes that by resistance inductance decoupling circuit hangs down residual voltage and exports and high current drain ability.
Particularly, this lightning protection circuit comprises discharge tube GDT1, the GDT2 of setting parallel with one another, described discharge tube GDT2 also has a grounding leg, and the two ends of described discharge tube GDT1, GDT2 are connected in parallel to power positive cathode A, the B in the circuit, and the grounding leg of GDT2 is connected to the earth terminal PE in the circuit.This discharge tube GDT1 and GDT2 form aforesaid first order discharge tube charge discharging resisting, namely form the one-level protection in the circuit.Discharge tube in the utility model all adopts gas discharge tube.Described discharge tube all adopts 90V/10KA (dc breakdown voltage is 90V, and through-flow electric current is 10KA).
Also comprise the Transient Suppression Diode TVS1 that is arranged in parallel at circuit both positive and negative polarity A, B two ends in the described lightning protection circuit, Transient Suppression Diode TVS2 and TVS3 that mutual series connection arranges, be connected in parallel to the two ends of Transient Suppression Diode TVS1 after described Transient Suppression Diode TVS2 and the TVS3 series connection again, and be connected with an earth connection between Transient Suppression Diode TVS2 and the TVS3, this earth connection is connected to the earth terminal PE of this circuit.Described Transient Suppression Diode TVS1, TVS2, TVS3 form aforesaid second level TVS charge discharging resisting, namely form the secondary protection in the circuit.
Variation owing to size of current between described secondary protection and the one-level protection circuit can form coupling, thereby the operate as normal of network is exerted an influence.Therefore, also be provided with decoupling circuit in this protection circuit.This decoupling circuit comprises inductance L 1 and resistance PPTC1 and mutual inductance L 2 and the resistance PPTC2 that connects that mutual series connection arranges.After described inductance L 1 and resistance PPTC1 connect mutually, be connected serially to again between the positive pole of the positive pole of one-level protection circuit and two stages of circuit, after described inductance L 2 and resistance PPTC2 connect mutually, be connected serially to again between the negative pole of the negative pole of one-level protection circuit and two stages of circuit.The two-stage protection of described front and back realizes the low residual voltage output of circuit and high current drain ability by resistance inductance decoupling.
As shown in Figure 5 and Figure 6, simultaneously lightning protection plate 24 is provided with the power lightning protection circuit, two kinds of 22 fens AC and DCs of the power interface of the utility model machine cabinet air-conditioner, the supply power voltage alternating current 220V, direct current 53V, power lightning protection circuit lightning protection standard 8/20us induction Leibo shape, differential mode 5KA, common mode 5KA.The power lightning protection circuit is multistage lightning protection, and is provided with decoupling component between the described adjacent two-stage lightning protection, and described decoupling component is air core inductor.The power lightning protection circuit corresponding power interface 22 of described machine cabinet air-conditioner is divided into and exchanges two kinds in lightning protection circuit and DC lightning prevention circuit.
Described interchange lightning protection circuit is set to the two-stage lightning protection, and front and back stages all is made up of piezo-resistance and discharge tube.Specifically as shown in Figure 5: wherein said one-level lightning protection comprises piezo-resistance RV7, RV8, the RV9 of three parallel connections and the discharge tube 10,20 that is arranged in parallel with piezo-resistance RV7, RV8, RV9.The secondary lightning protection comprises piezo-resistance RV10, RV11, the RV12 of three parallel connections and the discharge tube 30,40 that is arranged in parallel with piezo-resistance RV10, RV11, RV12.Also be provided with decoupling component between described one-level lightning protection and the secondary lightning protection, this decoupling component is air core inductor L5 and the L6 that is connected between one-level lightning protection and the secondary lightning protection, the two-stage protection of described front and back realizes the low residual voltage output of circuit and high current drain ability by air core inductor L5, L6 decoupling.Described one-level lightning protection piezo-resistance RV7, RV8, RV9, discharge tube 10, discharge tube 20 parallel with one another is connected in the positive and negative two ends of power supply; Described secondary lightning protection piezo-resistance RV10, RV11, RV12, discharge tube 30, discharge tube 40 parallel with one another also is connected in the positive and negative two ends of power supply; Described air core inductor L5 is connected between the positive pole of the positive pole of one-level lightning protection and secondary lightning protection; Air core inductor L6 is connected between the negative pole of the negative pole of one-level lightning protection and secondary lightning protection.
Described DC lightning prevention circuit is set to three grades of lightning protection, and preceding two-stage is by the piezo-resistance leakage current, and back level Transient Suppression Diode TVS amplitude limit is realized low residual voltage output.Specifically as shown in Figure 6: wherein said one-level lightning protection comprises three piezo-resistance RV1 parallel with one another, RV2, RV3, and this piezo-resistance RV1, RV2, RV3 are parallel to the positive and negative polarities of DC power supply.The secondary lightning protection comprises three piezo-resistance RV4 parallel with one another, RV5, RV6, and this piezo-resistance RV4, RV5, RV6 are parallel to the positive and negative polarities of DC power supply.Three grades of lightning protection comprise three Transient Suppression Diode TVS1, TVS2, TVS3 parallel with one another, and this Transient Suppression Diode TVS1, TVS2, TVS3 are parallel to the positive and negative polarities of DC power supply.Between described one-level lightning protection and the secondary lightning protection, be provided with decoupling component between secondary lightning protection and three grades of lightning protection.
Decoupling component between described one-level lightning protection and the secondary lightning protection is air core inductor L1 and the L2 that is connected between one-level lightning protection and the secondary lightning protection, and described air core inductor L1 is connected between the positive pole of the positive pole of one-level lightning protection and secondary lightning protection; Air core inductor L2 is connected between the negative pole of the negative pole of one-level lightning protection and secondary lightning protection, this two-stage protection of described one-level lightning protection and secondary lightning protection realizes the low residual voltage output of circuit and high current drain ability between one-level lightning protection and the secondary lightning protection by air core inductor L1, L2 decoupling.Decoupling component between described secondary lightning protection and the three grades of lightning protection is air core inductor L3 and the L4 that is connected between secondary lightning protection and the three grades of lightning protection, and described air core inductor L3 is connected between the positive pole of anodal and three grades of lightning protection of secondary lightning protection; Air core inductor L4 is connected between the negative pole of the negative pole of secondary lightning protection and three grades of lightning protection, this two-stages protection of described secondary lightning protection and three grades of lightning protection is by air core inductor L3, L4 decoupling, realizes the low residual voltage output of circuit and high current drain ability between secondary lightning protection and the three grades of lightning protection.
As shown in Figure 7 and Figure 8, the direct current reverse-connection preventing circuit that arranges on the described circuit board 25 comprises: be parallel to the positive and negative the two poles of the earth of power module input capacitor C 1, be connected in parallel on capacitor C 1 two ends resistance R 1, be connected in parallel on resistance R 1 two ends diode Z1, be parallel to the N-MOS transistor Q1 of diode Z1, be parallel to the diode Z2 of N-MOS transistor Q1, be parallel to the positive and negative two-stage of power module outlet capacitor C 2, be parallel to the capacitor C 3 of capacitor C 2.The utility model reversal connection protective device is selected power N-MOS transistor for use, and this device can be realized the low conduction impedance of protection fast and milliohm level, has greatly reduced the power consumption of reverse-connection preventing circuit.In addition; the AC compressor that the utility model machine cabinet air-conditioner is selected for use long-time running under AC supply voltage great fluctuation situation causes compressor fault easily; influence the useful life of compressor; for this reason; machine cabinet air-conditioner should possess the alternating voltage measuring ability; too high or cross low when surpassing certain hour when alternating voltage; machine cabinet air-conditioner can report alternating voltage to depart from the normal working voltage scope and report to the police; machine cabinet air-conditioner can cut off compressor power protection compressor this moment; when alternating voltage recovered normal range (NR), machine cabinet air-conditioner normally moved control logic according to the temperature operating mode that detects.The ac voltage measurement device is accurate voltage mutual inductor, can realize the isolation of voltage measurement and strong and weak electricity, and ac voltage signal is amplified into the AD collection pin of single-chip microcomputer through I/V conversion and rectifying and wave-filtering.
Be to be understood that, though this specification is described according to execution mode, but be not that each execution mode only comprises an independently technical scheme, this narrating mode of specification only is for clarity sake, those skilled in the art should make specification as a whole, technical scheme in each execution mode also can form other execution modes that it will be appreciated by those skilled in the art that through appropriate combination.
Above listed a series of detailed description only is specifying at feasibility execution mode of the present utility model; they are not in order to limiting protection range of the present utility model, allly do not break away from equivalent execution mode or the change that the utility model skill spirit does and all should be included within the protection range of the present utility model.
Claims (5)
1. machine cabinet air-conditioner with power lightning protection function, comprise main body and be installed in the rear board of back body, it is characterized in that described rear board is provided with communication interface and power interface, the communication interface rear is equipped with the lightning protection plate, and the lightning protection plate is provided with the power lightning protection circuit.
2. the machine cabinet air-conditioner with power lightning protection function according to claim 1 is characterized in that, described power lightning protection circuit comprises interchange lightning protection circuit and DC lightning prevention circuit,
Described interchange lightning protection circuit is the two-stage lightning protection, and each grade formed by the piezo-resistance of three parallel connections with the discharge tube that described three piezo-resistances are arranged in parallel, and is provided with decoupling component between the two-stage lightning protection;
Described DC lightning prevention circuit is three grades of lightning protection, the one-level lightning protection is made up of three piezo-resistances parallel with one another, the secondary lightning protection also is made up of three piezo-resistances parallel with one another, three grades of lightning protection are made up of three Transient Suppression Diodes parallel with one another, are equipped with decoupling component between one-level lightning protection and secondary lightning protection, secondary lightning protection and three grades of lightning protection.
3. the machine cabinet air-conditioner with power lightning protection function according to claim 2 is characterized in that, described decoupling component is air core inductor.
4. the machine cabinet air-conditioner with power lightning protection function according to claim 3 is characterized in that, exchanges in the lightning protection circuit, and described air core inductor is connected between one-level lightning protection and the secondary lightning protection.
5. the machine cabinet air-conditioner with power lightning protection function according to claim 3 is characterized in that, in the DC lightning prevention circuit, described air core inductor is connected between the adjacent two-stage lightning protection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320244214 CN203233163U (en) | 2013-05-08 | 2013-05-08 | Equipment cabinet air conditioner with power supply lightning protection function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320244214 CN203233163U (en) | 2013-05-08 | 2013-05-08 | Equipment cabinet air conditioner with power supply lightning protection function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203233163U true CN203233163U (en) | 2013-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320244214 Expired - Fee Related CN203233163U (en) | 2013-05-08 | 2013-05-08 | Equipment cabinet air conditioner with power supply lightning protection function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203233163U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912387A (en) * | 2019-11-13 | 2020-03-24 | 北京航天易联科技发展有限公司 | Power supply circuit and military equipment system |
-
2013
- 2013-05-08 CN CN 201320244214 patent/CN203233163U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110912387A (en) * | 2019-11-13 | 2020-03-24 | 北京航天易联科技发展有限公司 | Power supply circuit and military equipment system |
| CN110912387B (en) * | 2019-11-13 | 2021-03-05 | 北京航天易联科技发展有限公司 | Power supply circuit and military equipment system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131009 Termination date: 20140508 |